WorkCentre® 6655

Color Multifunction Printer

Service Manual

Sample
Fault Code Structure

322-330-00

WorkCentre 6655 ®

Color Multifunction Printer

Service Manual Updated 12/14/15 DAW
Xerox Internal-Use Only
Xerox WorkCentre 6655 Color Multifunction Printer © 2014 Xerox Corporation. All rights reserved. XEROX® and XEROX and design®, PhaserS-
MART®, DocuCard®, DocuSP®, FreeFlow® CentreWare®, infoSMART®, Made For Each
Service Documentation Other®, PagePack™, ProfitAccelertor™, WorkCentre™, and Walk-Up™ are trademarks of
Xerox Corporation in the United States and/or other countries.
WorkCentre 6655 Color Multifunction Printer Service Manual
Other company trademarks are also acknowledged.
705P01356
As an ENERGY STAR® partner, Xerox Corporation has determined that this product meets the
Initial Issue - Xerox Internal Use Only ENERGY STAR guidelines for energy efficiency. The ENERGY STAR name and logo are reg-
istered U.S. marks.
9/2014

Xerox Corporation

Content Development and Language Services

26600 Parkway - Bldg. 60

P.O. Box 1000, M/S 7060-776

Wilsonville, OR 97070-1000

NOTICE: All service documentation is supplied to Xerox external customers for informational
purposes only. Xerox service documentation is intended for use by certified, product trained
service personnel only. Xerox does not warrant or represent that such documentation is com-
plete, nor does Xerox represent or warrant that it will notify or provide to such customer any
future changes to this documentation. Customer performed service of equipment, or modules,
components or parts of such equipment may affect the warranty offered by Xerox with respect
to such equipment. You should consult the applicable warranty for its terms regarding cus-
tomer or third party provided service. If the customer services such equipment, modules, com-
ponents or parts thereof, the customer releases Xerox from any and all liability for the customer
actions, and the customer agrees to indemnify, defend and hold Xerox harmless from any third
party claims which arise directly or indirectly from such service.

Unpublished rights reserved under the copyright laws of the United States. Contents of this
publication may not be reproduced in any form without permission of Xerox Corporation.

Copyright protection claimed includes all forms of matters of copyrightable materials and infor-
mation now allowed by statutory or judicial law or hereinafter granted, including without limita-
tion, material generated from the software programs which are displayed on the screen such
as styles, templates, icons, screen displays, looks, etc.

Xerox technical training materials and service manuals are intended for use by authorized
Xerox service technicians and service partners only and are not for resale. These materials
may not be distributed, copied or otherwise reproduced without prior written consent from
Xerox Corporation.
 Introduction
About This Manual .......................................................................................................... iii
How To Use This Manual................................................................................................ iii
Service Safety Summary................................................................................................. iv
Symbols Used On The Product....................................................................................... v
Voltage Measurement and Specifications....................................................................... vi
Health and Safety Incident Reporting ............................................................................. vii
Regulatory Specifications................................................................................................ viii
Translation of Warnings .................................................................................................. ix
WorkCentre 6655 Overview ............................................................................................ xi
Options Overview ............................................................................................................ xv
Configurations ................................................................................................................. xvi
Consumables and Maintenance...................................................................................... xvii
Product Codes and Serial Number Range ...................................................................... xviii

Initial Issue - Xerox Internal Use Only 9/2014 Introduction

Xerox WorkCentre 6655 Color Multifunction Printer i
Introduction 9/2014 Initial Issue - Xerox Internal Use Only
ii Xerox WorkCentre 6655 Color Multifunction Printer
About This Manual How To Use This Manual
The WorkCentre 6655 Multifunction Printer Service Manual is part of a multinational service Always start with the Service Call Procedures, Section 1. Perform Initial Actions and verify the
documentation system delivered in the standard Xerox EDOC service manual format. This problem, then follow the directions given.
manual is the primary document used for diagnosing, repairing, maintaining, and troubleshoot-
ing these systems. The Service Manual is the controlling publication for a service call. To How to Differentiate Between Machine Variants
ensure product understanding, complete the Xerox Service Training Program for this printer. The machine will be identified in this manual by the model identifier 6655N/DN or 6655SN/DN.

Organization When a procedure, parts list description or other reference is unique amongst different models
Section titles and the information contained in each is presented in the following paragraphs: of machine, the appropriate model designator is indicated. Any artwork is also specific.

Section 1 Service Call Procedures NOTE: This manual services all configurations of the machine. Ignore references to options
This section is used to start and complete a service call. The procedures in this section will not installed on the machine.
either direct you to a Repair Analysis Procedure (RAP), or identify a faulty component or sub-
assembly.
Warnings, Cautions and Notes
WARNING
Section 2 Status Indicator Repair Analysis Procedures A warning is used whenever an operating or maintenance procedure, practice, condi-
This section contains the Repair Analysis Procedures (RAPs) and checkouts necessary to tion or statement, if not strictly observed, could result in personal injury.
diagnose, isolate and repair faults other than image quality faults. A translated version of all warnings is in Translation of Warnings.

Section 3 Image Quality CAUTION

This section contains the Image Quality Repair Analysis Procedures (IQ RAPs), checkouts and A caution is used whenever an operation or maintenance procedure, practice, condition or
setup procedures necessary to diagnose, isolate and repair image quality faults. statement, if not strictly observed, could result in damage to the equipment.

Section 4 Repairs/Adjustments NOTE: A note appears to highlight a procedure, practice, condition or statement.
This section contains the instructions for removal, replacement, and adjustment of parts. Service Acronyms
Section 5 Parts List While using this service documentation, you may encounter acronyms that are unfamiliar.

This section contains the illustrated spare parts list. Any part that is spared or that must be To find definitions for Xerox acronyms, go to the following page in your web browser, then enter
removed to access a spared part is illustrated.
the acronym and click Search:

Section 6 General Procedures / Information https://open.xerox.com/Services/acronym

This section contains all other procedures, product specifications and general information.

Section 7 Wiring Data

This section contains the wiring diagrams.

Section 8 Principles of Operation

This section contains details of printer operation and component locations.

Component Names
Names of parts that appear in the disassembly procedures may not be exactly the same as the
names that appear on the part or listed in the Parts List. For example; a part called the Regis-
tration Chute Assembly may appear on the Parts List as Assembly, Chute REGI.

Initial Issue - Xerox Internal Use Only 9/2014 Introduction

Xerox WorkCentre 6655 Color Multifunction Printer iii About This Manual, How To Use This Manual
Service Safety Summary Safety Labels
General Guidelines Read and obey all posted caution, warning, and danger labels. Throughout the printer, these
safety labels are displayed on potentially dangerous components. As you service the printer,
For qualified service personnel only: Refer also to the preceding Electrical Safety.
check to make certain that all safety labels remain in place.
Avoid servicing alone: Do not perform internal service or adjustment of this product unless
• Caution: An unapparent hazard exists that may cause personal injury or damage to the
another person capable of rendering first aid or resuscitation is present.
equipment. For example, a panel may cover the hazardous area.
Use care when servicing with power applied: Dangerous voltages may exist at several points in • Warning: An unapparent hazard exists that may cause serious personal injury.
this product. To avoid personal injury, do not touch exposed connections and components • Danger: An unapparent hazard exists that may cause serious personal injury or death.
while power is on. Disconnect power before removing the power supply shield or replacing Safety Interlocks
components.
Make sure all covers are in place and all interlock switches are functioning correctly after you
have completed a service call. If you bypass an interlock switch, use extreme caution when
Do not wear jewelry: Remove jewelry prior to servicing. Rings, necklaces and other metallic
working on or around the printer. Figure 1 shows the interlock circuitry.
objects could come into contact with dangerous voltages and currents.

Electrical Safety
• Use the Power Cord supplied with the printer.
• Plug the Power Cord directly into a properly grounded electrical outlet.
• Do not use a ground adapter plug to connect the printer to an electrical outlet that does
not have a ground connection terminal.
• Do not use an extension cord or power strip.
• Do not place the system in an area where people might step on the power cord.
• Do not place objects on the power cord.
• Do not block ventilation openings. These openings prevent printer overheating.
• Do not drop paper clips or staples into the printer.
Operational Safety
The printer and supplies were designed and tested to meet strict safety requirements. These
include safety agency examination, approval, and compliance with established environmental
standards.

Pay attention to these safety guidelines to ensure the continued, safe operation of the printer.
• Use the supplies specifically designed for your system. The use of unsuitable materials
may cause poor performance and a possible safety hazard.
• Follow all warnings and instructions marked on, or supplied with, the system, options and
supplies.

NOTE: The Total Satisfaction Guarantee is available in the United States and Canada. Cover-
age may vary outside these areas; please contact your local representative for details.

Maintenance Safety
• Do not attempt maintenance not specifically described in the printer documentation.
• Do not use aerosol cleaners. The use of supplies that are not approved may cause poor
performance and could create a hazardous condition.
• Do not burn any consumables or routine maintenance items. For information on Xerox
supplies recycling programs, go to www.xerox.com/gwa.

Introduction 9/2014 Initial Issue - Xerox Internal Use Only

Service Safety Summary iv Xerox WorkCentre 6655 Color Multifunction Printer
 Symbols Used On The Product
The following precautionary symbols may appear on the machine.

Figure 1 indicates Danger High Voltage.

Figure 1 High Voltage symbol

Figure 2 is the Protective Ground (Earth) symbol.

Figure 2 Protective Ground (earth) symbol

Figure 3 is the symbol indicating a hot surface. Use caution to avoid personal injury.

Figure 3 Hot Surface symbol

Figure 4 is the symbol indicating that the surface is hot while the printer is running. After turning
off the power, wait 30 minutes.

Figure 4 Wait 30 Minutes symbol

Figure 1 Interlock circuits

Initial Issue - Xerox Internal Use Only 9/2014 Introduction

Xerox WorkCentre 6655 Color Multifunction Printer v Service Safety Summary, Symbols Used On The
Figure 5 is the symbol indicating where avoid pinching fingers in the printer. Use caution to Voltage Measurement and Specifications
avoid personal injury.
Table 1 shows the voltages present in the WorkCentre 6655. Measurements of DC voltage
must be made with reference to the specified DC Common, unless some other point is refer-
enced in a diagnostic procedure. All measurements of AC voltage should be made with respect
to the adjacent return or ACN wire.

Table 1 Voltage Measurement and Specifications

Figure 5 Pinch Injury symbol Voltage Specification
Input Power 220 V 198 VAC TO 254 VAC
Figure 6 is the symbol to use caution (or draws attention to a particular component). Refer to
the manual(s) for information. Input Power 100 V 90 VAC TO 135 VAC
Input Power 120 V 90 VAC TO 135 VAC
+5 VDC +4.75 VDC TO +5.25 VDC
+24 VDC +23.37 VDC TO +27.06 VDC

Logic Voltage Levels

Figure 6 Use Caution symbol Table 2 show the logic levels present in the WorkCentre 6655. Measurements of logic levels
must be made with reference to the specified DC Common, unless some other point is refer-
Figure 7 is the symbol indicating that the item is sensitive and should not be touched. enced in a diagnostic procedure.

Table 2 Logic Levels

Voltage H/L Specification
+5 VDC H = +3.00 V or greater
L = below 0.8 V
+3.3V H = +2 V or greater
Figure 7 Do Not Touch symbol L =below 0.8 V

Figure 8 is the symbol indicating the item is sensitive to sunlight, and exposure to it will reduce
its life span. DC Voltage Measurement in RAPs
The RAPs have been designed so that when it is required to use the DMM to measure a DC
voltage, the first test point listed is the location for the red (+) meter lead and the second test
point is the location for the black meter lead. For example, the following statement may be
found in a RAP.

There is +5 VDC from P/J7 to P/J68.

In this example, the red meter lead would be placed on P/J7 and the black lead on P/J68.
Figure 8 No Sunlight symbol
If a second test point is not given, it is assumed that the black meter lead may be attached to
Figure 9 is the symbol indicating the item is sensitive to any light, and exposure to it will reduce chassis ground.
its life span.

Figure 9 No Light symbol

Introduction 9/2014 Initial Issue - Xerox Internal Use Only

Symbols Used On The Product, Voltage Measure- vi Xerox WorkCentre 6655 Color Multifunction Printer
Health and Safety Incident Reporting Responsibilities for resolution:
1. Business Groups/Product Design Teams responsible for the product involved in the inci-
I. Summary dent shall:
This section defines requirements for notification of health and safety incidents involving Xerox
a. Manage field bulletins, customer correspondence, product recalls, safety retrofits.
products (equipment and materials) at customer locations.
b. Fund all field retrofits.
II. Scope 2. Field Service Operations shall:

Xerox Corporation and subsidiaries worldwide. a. Preserve the Xerox product involved and the scene of the incident inclusive of any
associated equipment located in the vicinity of the incident.
III. Objective b. Return any affected equipment/part(s) to the location designated by Xerox EH&S
and/or the Business Division.
To enable prompt resolution of health and safety incidents involving Xerox products and to
c. Implement all safety retrofits.
ensure Xerox regulatory compliance.
3. Xerox EH&S shall:
IV. Definitions a. Manage and report all incident investigation activities.
Incident: b. Review and approve proposed product corrective actions and retrofits, if necessary.
c. Manage all communications and correspondence with government agencies.
An event or condition occurring in a customer account that has resulted in injury, illness or d. Define actions to correct confirmed incidents.
property damage. Examples of incidents include machine fires, smoke generation, physical
injury to an operator or service representative. Alleged events and product conditions are
included in this definition.

V. Requirements
Initial Report:
1. Xerox organizations shall establish a process for individuals to report product incidents to
Xerox Environment Health & Safety within 24 hours of becoming aware of the event.
2. The information to be provided at the time of reporting is contained in Appendix A (Health
and Safety Incident Report involving a Xerox product).
3. The initial notification may be made by any of the following methods:
• For incidents in North America and Developing Markets West (Brazil, Mexico, Latin
American North and Latin American South):
– Phone* Xerox EH&S at: 1-800-828-6571.
– Electronic mail to Xerox EH&S
– Fax Xerox EH&S at: 1-585-422-6449 [intelnet 8*222 6449].
• For incidents in Europe and Developing Markets East (Middle East, Africa, India,
China and Hong Kong):
– Phone* Xerox EH&S at: +44 (0) 1707 353434.
– Electronic mail Xerox EH&S at: Elaine.Grange@xerox.com.
– Fax Xerox EH&S at: +44 (0) 1707 353914 [intelnet 8*668 3914].
*Initial notification made by phone must be followed within 24 hours by a completed inci-
dent report and sent to the indicated electronic mail address or fax number.

NOTE: If sending a fax, please also send the original via internal mail.

Initial Issue - Xerox Internal Use Only 9/2014 Introduction

Xerox WorkCentre 6655 Color Multifunction Printer vii Health and Safety Incident Reporting
Regulatory Specifications To ensure compliance with European Union regulations, use shielded interface cables.

Xerox has tested this product to electromagnetic emission and immunity standards. These
A signed copy of the Declaration of Conformity for this product can be obtained from Xerox.
standards are designed to mitigate interference caused or received by this product in a typical
office environment.

United States (FCC Regulations)

The WorkCentre 6655 has been tested and found to comply with the limits for a Class A digital
device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a commercial installation. This equipment generates,
uses, and can radiate radio frequency energy. If it is not installed and used in accordance with
these instructions, it may cause harmful interference to radio communications. Operation of
Class A equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his/her own expense. There is no guarantee
that interference will not occur in a particular installation.

If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment Off and On, the user is encouraged to try to correct the
interference by one or more of the following measures:

• Reorient or relocate the receiver.

• Increase the separation between the equipment and receiver.
• Connect the equipment to a different electrical circuit.
• Consult the dealer or an experienced radio/television technician for help.
Any modifications not expressly approved by Xerox could void the user's authority to operate
the equipment. To ensure compliance with Part 15 of the FCC rules, use shielded interface
cables.

Canada (Regulations)
This Class A digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.

European Union

CE Mark

The CE mark (Figure 1) applied to this product symbolizes

Xerox’s declaration of conformity with the following applica-
ble Directives of the European Union as of the dates indi-
Figure 1 CE Symbol cated:

December 12, 2006: Low Voltage Directive 2006/95/EC

December 15, 2004: Electromagnetic Compatibility Directive 2004/108/EC

This product, if used properly in accordance with the user's instructions, is neither dangerous
for the consumer nor for the environment.

Introduction 9/2014 Initial Issue - Xerox Internal Use Only

Regulatory Specifications viii Xerox WorkCentre 6655 Color Multifunction Printer
Translation of Warnings WARNING
WARNING Use extreme care when working in the following area. Some of the components are elec-
trically energized and could cause electrical shock and personal injury if touched.
Switch off the electricity to the machine. Disconnect the power cord from the customer
DANGER: Faire très attention en travaillant dans la zone suivante. Certains éléments
supply while performing tasks that do not need electricity. Electricity can cause death or
portent une charge électrique et présentent un risque d'électrocution et de graves
injury. Moving parts can cause injury.
blessures s'ils sont touchés.
DANGER: Mettez la machine hors tension. Déconnectez le cordon d'alimentation de
AVVERTENZA: Maneggiare la seguente area con la massima precauzione. Alcuni com-
l'alimentation du client lorsque vous réalisez des tâches qui ne nécessitent pas d'élec-
ponenti sono carici di corrente elettrica e se toccati possono provocare scosse
tricité. L'électricité peut être à l'origine de blessures, voire d'un accident mortel. Les
elettriche e lesioni.
pièces amovibles peuvent être à l'origine de blessures.
VORSICHT: Bei Arbeiten in folgenden Bereichen besondere Vorsicht walten lassen. Ein-
AVVERTENZA: Spegnere la macchina. Scollegare il cavo di alimentazione dall'alimenta-
ige der Komponenten sind elektrisch aufgeladen und können bei Berührung einen
tore quando si eseguono attività che non richiedono elettricità. L'elettricità può causare
Stromschlag und körperliche Verletzung verursachen
morte o lesioni personali. Le parti in movimento possono causare lesioni personali.
AVISO: Tenga mucho cuidado al trabajar en el área siguiente. Algunos de los compo-
VORSICHT: Schalten Sie die Stromversorgung der Maschine ab. Ziehen Sie das Stromk-
nentes están cargados eléctricamente y podrían producir descargas y lesiones, si se
abel ab, wenn Sie Aufgaben ausführen, für die keine Stromversorgung benötigt wird.
tocan
Stromschläge können Todesfällen oder Verletzungen verursachen. Bewegliche Teile
können zu Verletzungen führen.
AVISO: Apague la electricidad de la máquina. Desconecte el cable de alimentación eléc-
trica de la toma de pared mientras esté realizando tareas que no necesiten corriente. La WARNING
electricidad puede causar daños o la muerte. Las partes móviles pueden causar daños. Do not work in a confined space. 1 m (39 inches) space is needed for safe working.
DANGER : Ne pas travailler dans un espace restreint. 1 mètre d'espace est nécessaire
pour un dépannage en toute sécurité.
WARNING AVVERTENZA: Non lavorare in uno spazio limitato; è necessario uno spazio di almeno
Perform the steps in the following procedure carefully. Failure to follow this procedure un metro attorno alla macchina per la sicurezza dell'operatore.
carefully could result in electrical shock and personal injury. VORSICHT: Nur mit ausreichendem Bewegungsspielraum (1 m) arbeiten.
DANGER: Faire très attention en effectuant les étapes de la procédure suivante. Si cette AVISO: No trabaje en un espacio reducido. Se necesita 1 metro de espacio para trabajar
procédure n'est pas strictement respectée, il y a des risques d'électrocution et d'autres con seguridad.
blessures.
AVVERTENZA: Si prega eseguire attentamente la seguente procedura. Omettere di
eseguire attentamente la procedura indicata può provocare forti scosse e gravi ferite. WARNING
VORSICHT: Befolgen Sie die Schritte der folgenden Anleitung genau. Die Nichtbefol- Use safe handling procedures when removing the module. Refer to GP 16. The module
gung dieser Anweisungen kann elektrischen Schlag oder andere Körperverletzungen is heavy.
zur Folge haben.
DANGER: Conformez-vous aux procédures de manipulation de sécurité pour le retrait
AVISO: Lleve a cabo los pasos del procedimiento siguiente con mucho cuidado. No du module. Reportez-vous à GP 16. Le module est lourd.
seguir este procedimiento cuidadosamente puede ocasionar una descarga eléctrica y AVVERTENZA: Utilizzare procedure di gestione sicure durante la rimozione del modulo.
lesiones personales
Vedere GP 16. Il modulo è pesante.
VORSICHT: Verwenden Sie sichere Vorgehensweisen zum Entfernen des Moduls. Siehe
auch GP 16. Das Modul ist sehr schwer.
AVISO: Utilice los procedimientos de seguridad cuando elimine el módulo. Consulte el
GP 16. El módulo es pesado.

Initial Issue - Xerox Internal Use Only 9/2014 Introduction

Xerox WorkCentre 6655 Color Multifunction Printer ix Translation of Warnings
 WARNING WARNING
Follow the service procedure exactly as written. Use of controls or adjustments other Use only Xerox materials and components. This product is safety certified using Xerox
than those specified in this manual, may result in an exposure to invisible laser radia- materials and components. The use of non Xerox materials and components may invali-
tion. During servicing, the invisible laser radiation can cause eye damage if looked at date the safety certificate.
directly. DANGER : N'utilisez que des matières premières et des composants Xerox. La sécurité
DANGER : Les procédures de dépannage doivent être suivies à la lettre. Si les réglages du produit est assurée dans le cadre de son utilisation avec des matières premières et
ou vérifications ne sont pas effectués suivant les instructions de ce manuel, il peut y des composants Xerox. L'utilisation de matières premières et de composants autres
avoir un risque d'exposition dangereuse au faisceau laser. Celui-ci peut provoquer des que ceux de Xerox risque d'invalider le certificat de sécurité.
lésions oculaires s'il est observé directement. AVVERTENZA: Utilizzare solo materiali e componenti Xerox per avvalersi della certifi-
AVVERTENZA: Eseguire le procedure di servizio esattamente come descritto. L'utilizzo cazione di protezione. L'utilizzo di materiali e componenti non Xerox può rendere nulla
di dispositivi di controllo o di registrazione diversi da quelli riportati in questo manuale la certificazione di protezione.
potrebbe comportare un'esposizione a radiazioni laser invisibili. Tali radiazioni possono VORSICHT: Verwenden Sie nur Materialien und Komponenten von Xerox. Dieses
danneggiare gli occhi se si guarda direttamente il fascio laser durante gli interventi di Produkt besitzt die Sicherheitszertifizierung bei Verwendung von Xerox-Materialien und
servizio. -Komponenten. Die Verwendung von Materialien und Komponenten anderer Hersteller
VORSICHT: Die Wartungsarbeiten genau den Anweisungen entsprechend durchführen. setzt möglicherweise das Sicherheitszertifikat außer Kraft.
Der Umgang mit Steuer- oder Bedienelementen, deren Verwendung nicht ausdrücklich AVISO: Utilice solo los materiales y componentes Xerox. Este producto dispone de un
in diesem Handbuch angewiesen wurde, kann dazu führen, dass unsichtbare Laser- certificado de seguridad si se utilizan los materiales y componentes Xerox. Este certifi-
strahlung frei gesetzt wird. Direkter Blickkontakt mit dem Laserstrahl kann bleibende cado de seguridad no será válido si se utilizan materiales y componentes que no sean
Augenschäden verursachen. de Xerox.
AVISO: Siga los procedimientos de mantenimiento tal como están descritos. El uso de
controles o ajustes no especificados en este manual puede tener como resultado la
exposición a radiación láser invisible. Durante las operaciones de mantenimiento, la WARNING
radiación de láser invisible puede causar daños en los ojos si se mira directamente a
Do not touch the fuser while it is hot.
ella.
DANGER : Ne pas toucher au four pendant qu'il est encore chaud.
AVVERTENZA: Non toccare il fonditore quando è caldo.
WARNING VORSICHT: Fixierbereich erst berühren, wenn dieser abgekühlt ist.
USA and Canada. Do not install this machine in a hallway or exit route that does not AVISO: No toque el fusor mientras está caliente.
have 1.12 m (44 inches) of space additional to the normal space requirements in front of
the machine. To conform with fire regulations this additional 1.12 m (44 inches) of space
is needed in front of the machine in hallway and exit routes. WARNING
DANGER: États-Unis et Canada. Si cette machine est installée dans un couloir ou une Do not handle the fuser components until they have cooled. Some fuser components
voie de sortie, 1,12 m (44 pouces) d'espace supplémentaire à l'espace normal doit être operate at hot temperatures and can produce serious personal injury if touched.
disponible devant la machine conformément aux normes de sécurité d'incendie.
DANGER: Ne pas manipuler les éléments du four avant de les laisser refroidir. Certains
AVVERTENZA: N/A éléments du four fonctionnent à des températures très élevées et peuvent causer de
VORSICHT: N/A graves blessures s'ils sont touchés.
AVISO: Estados Unidos y Canadá. No instale esta máquina en un corredor o ruta de sal- AVVERTENZA: Non maneggiare i componenti del fusore finché non sono raffreddati.
ida que no tenga 1.12 m (44 pulgadas) de ancho delante de la máquina, sin incluir el Alcuni di questi componenti funzionano ad alte temperature e possono provocare gravi
espacio que ocupe la máquina. Este espacio adicional de 1.12 m (44 pulgadas) delante ferite se vengono toccati.
de la máquina en corredores y rutas de salida es necesario para cumplir los requisitos VORSICHT: Die Fixieranlage sollte erst gehandhabt werden, wenn diese genügend
de las normas sobre incendios. abgekühlt ist. Einige Teile der Fixieranlage erzeugen übermäßige Hitze und führen bei
der Berührung zu schweren Verbrennungen.
AVISO: No manipule los componentes del fusor antes de que se enfríen. Algunos de los
componentes del fusor funcionan a altas temperaturas y pueden ocasionar daños per-
sonales graves si se los toca.

Introduction 9/2014 Initial Issue - Xerox Internal Use Only

Translation of Warnings x Xerox WorkCentre 6655 Color Multifunction Printer
 WARNING WorkCentre 6655 Overview
Do not attempt to remove or lift the following component with less than 2 people. The The WorkCentre 6655 combines a color laser print engine with a scanner and Duplex Auto-
component is very heavy and requires at least 2 people to lift or remove it. Any attempt matic Document Feeder (DADF), Tray 1. The Output Tray holds 250 20lb. sheets facedown.
to remove or lift the component with less than 2 people could result in serious personal WorkCentre 6655 options add media capacity and wireless connectivity. A configuration with
injury. one additional 550-Sheet Feeder is supported. The following subsections identify parts from
DANGER: Ne pas tenter d'enlever ou soulever l'élément suivant tout seul. Cet élément the front, side, rear, and internal views.
est très lourd; au moins 2 personnes doivent être présentes pour le soulèvement ou la
dépose. Toute tentative d'enlever ou soulever cet élément sans la collaboration d'au Technical Support Information
moins 2 personnes peut causer de graves blessures. The Xerox Service Manual is the primary document used for repairing, maintaining, and trou-
AVVERTENZA: Non tentare di togliere o sollevare il componente seguente con meno di bleshooting the printer. To ensure complete understanding of this product, participation in
2 persone. Il componente è molto pesante e richiede almeno 2 persone per sollevarlo o Xerox Service Training is strongly recommended. To service this product, certification for this
rimuoverlo. Tentare di rimuovere o sollevare questo componente con meno di 2 persone product is required.
può provocare gravi ferite.
VORSICHT: Versuchen Sie keinesfalls, die folgende Komponente mit weniger als 2 Per- For updates to the Service Manual, Service Bulletins, knowledge base, etc., go to:
sonen zu entfernen oder zu heben. Die Komponente ist sehr schwer, daher werden • Xerox Global Service Net - https://www.xrxgsn.com/secure/main.p
mindestens 2 Personen benötigt, um sie zu heben oder zu entfernen. Der Versuch, die
For further technical support, contact your assigned Xerox Technical Support for this product.
Komponente mit weniger als 2 Personen zu entfernen oder zu heben, kann schwere
Körperverletzung zur Folge haben.
WorkCentre 6655 Standard Orientation
AVISO: No intente levantar o retirar el componente siguiente usando menos de 2 perso-
Figure 1 shows the standard orientation for the WorkCentre 6655. Directional descriptions
nas. El componente es muy pesado, y se necesitan por lo menos 2 personas para levan-
used in the procedures are defined as follows:
tarlo o retirarlo. Intentar retirar o levantar el componente usando menos de 2 personas
puede resultar en lesionales personales serias. • Front: Direction toward you when facing the front of the printer.
• Rear: Direction opposite to the front when facing the front of the printer.
• Left: Left-hand direction when facing the front of the printer.
• Right: Right-hand direction when facing the front of the printer.

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Xerox WorkCentre 6655 Color Multifunction Printer xi Translation of Warnings, WorkCentre 6655 Over-
 Figure 2 WorkCentre 6655 Main Power Switch
Figure 1 WorkCentre 6655 Standard Orientation
WorkCentre 6655 Front View
Parts of the Printer Figure 3 shows the printer’s front view with parts identified in Table 1.
Main On/Off Power Switch
Figure 2 shows the printer’s On/Off power switch with a detail of the On and Off positions.
When Off, electricity is removed from the printer’s internal components. The figure shows the
switch in the On position.

WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.

Introduction 9/2014 Initial Issue - Xerox Internal Use Only

WorkCentre 6655 Overview xii Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 4 Rear and Left Side Views

Table 2 Rear and Side Views

1. USB Type B Port (slave) 7. Duplex Unit
Figure 3 Front and Right Side Views 2. Ethernet Connector 8. Transfer Roller
3. USB Type A Port (host) 9. Fuser
Table 1 Front View 4. USB Type A Port (host) 10. USB Type A Port (host)
1. Tray 1 6. Duplex Automatic Document Feeder 5. Power Connector 11. Fax Line Connector
2. Bypass Tray 7. Staple Cartridge Door 6. Rear Door
3. Front Door 8. Output Tray
4. Output Tray Paper Stop 9. Front Door Handle WorkCentre 6655 Internal Parts
5. UI Console Panel 10. Tray 2, Optional 550-Sheet Feeder Figure 5 shows the printer’s rear and side views with parts identified in Table 3.

WorkCentre 6655 Rear and Side Views

Figure 4 shows the printer’s rear and side views with parts identified in Table 2.

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Xerox WorkCentre 6655 Color Multifunction Printer xiii WorkCentre 6655 Overview
 Figure 5 Internal Parts

Table 3 Internal Parts

1. Output Tray Paper Stop 6. Document Glass
2. Front Door 7. Staples Refill Cartridge
3. Toner Cartridges 8. Waste Cartridge Lock
4. Duplex Automatic Document Feeder 9. Imaging Unit
5. Document Cover 10. Waste Cartridge
Figure 6 Control Panel
Control Panel Layout
Table 4 Control Panel Features
The WorkCentre 6655 Control Panel (Figure 6) consists of a touchscreen, a keypad, and sev-
eral buttons. These buttons are used to navigate the menu system, perform functions, and Item Description
select operational modes. Table 4 lists the function of each control. 1. Display Touchscreen display of printer settings, status, messages and menus
2. Services Home Services Home displays services, such as copy, scan, and fax
3. Services Returns to the active service from the Job Status or Machine Status
screens, or to a preset service
4. Job Status Displays active, held, and completed jobs
5. Machine Status Displays settings and information
6. Keypad Enter alphanumeric characters
7. Clear Deletes numeric values or the last digit entered
8. Dial Pause Inserts a pause in a telephone number for fax transmission.
9. Interrupt Print Pauses the currently printing job to run a more urgent job.
10. Start Start the selected job
11. Stop Stops the current job. Follow the onscreen instructions to cancel or
resume the job
12. Clear All Clears previous and changed settings for the current service. Press
twice to reset all defaults and clear existing scans

Introduction 9/2014 Initial Issue - Xerox Internal Use Only

WorkCentre 6655 Overview xiv Xerox WorkCentre 6655 Color Multifunction Printer
 Table 4 Control Panel Features Options Overview
13. Power Restart or shuts down the printer
WorkCentre 6655 options include:
14. Language Changes the touch screen language and keyboard settings
• 550-sheet feeder
15. Power Saver Enter a reduced power mode
• USB wireless network adaptor
16. Help Displays additional information about the current selection or service
• Printer stand
17. Log In / Out Access password protected features following login
550-Sheet Feeder
The optional 550-sheet feeder (Figure 1) increases media storage. One additional tray is sup-
ported.

Figure 1 Option 550-Sheet Feeder

Initial Issue - Xerox Internal Use Only 9/2014 Introduction

Xerox WorkCentre 6655 Color Multifunction Printer xv WorkCentre 6655 Overview, Options
Configurations
WorkCentre 6655 configurations are described in this section.

Basic Configuration
The printer has the following basic configurations (Figure 1) depending on the destination.
• Print engine main unit (MSI and 550 feeder unit as the standard paper feeding)
• Consumables (CRU)

Figure 2 Functional Configuration

Figure 1 Basic Configuration

Functional Configuration
The WorkCentre 6655 functional configuration is shown in Figure 2.

Introduction 9/2014 Initial Issue - Xerox Internal Use Only

xvi Xerox WorkCentre 6655 Color Multifunction Printer
Consumables and Maintenance
Consumables consist of C, M, Y, and K Toner Cartridges, C, M, Y, and K Imaging Units, and the
Waste Cartridge as shown in Figure 1.

Each Toner Cartridge (except starter cartridges) has a CRUM (Customer Replaceable Unit
Monitor) to record regional and toner usage information. The CRUM maintains a count of the
amount of toner consumed. When the count reaches set values, warning and error messages
appear to notify the user when near and end of life status is reached.

Like the Toner Cartridges, each Imaging Unit has a CRUM to maintain a page count. When the
count reaches a set value, warning and error messages appear to notify the user that the
Imaging Unit has reached near or end of life status.

NOTE: The specifications shown life ratings are correct at the time of product release. For the
most current values, go to www.xerox.com.

Life ratings are based on ISO/IEC 19798 (Table 1)

Table 1 Consumable Life Expectancy

Consumable Capacity
CMYK Standard Capacity Toner Cartridges sold cartridges 3,000 color
6,000 black
metered cartridges 7,500 color
12,000 black
CMYK High Capacity Toner Cartridges sold cartridges 7,500 color
12,000 black
metered cartridges 11,500 color
12,000 black
CMYK Imaging Unit 60,000
Waste Cartridge 30,000
Figure 1 Routine Maintenance Items
Routine Maintenance Items
The following list shows the life rating for routine maintenance items, which appear in Figure 1
with the consumables:

• Fuser (110V / 220V): 100 kPV or 5 years (B50)

• Transfer Belt unit + Transfer Roller unit + Cassette Retard Roller: 100 kPV (B10)
• DADF Pick roller module and separation pad: 35 kPV

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Xerox WorkCentre 6655 Color Multifunction Printer xvii Consumables and Maintenance
Product Codes and Serial Number Range
Product codes are listed in Table 1. Serial number ranges for each product appear in Table 2.

Table 1 Product Codes

Product Code
6655_XM 110V (Metered; Color Copy/Print/Scan/Fax/Email, Stapler) E1B
6655_X 110V (Sold; Color Copy/Print/Scan/Fax/Email, Stapler) E1B
6655_YXM 110V TAA-compliant (Metered; Color Copy/Print/Scan/Fax/Email, Sta- E1B
pler)
6655V_XM 220V (Metered; Color Copy/Print/Scan/Fax/Email, Stapler) E9A
6655V_X 220V (Sold; Color Copy/Print/Scan/Fax/Email, Stapler) E9A
6655V_XA 220V Argentina (Sold; Color Copy/Print/Scan/Fax/Email, Stapler) E9A
6655V_XC 220V Chile (Sold; Color Copy/Print/Scan/Fax/Email, Stapler) E9A
6655V_XP 220V Peru (Sold; Color Copy/Print/Scan/Fax/Email, Stapler) E9A

Table 2 Serial Number Range

Product Serial Number Range
6655_X, 6655_XM E9A933916 - E9A943815
6655_YXM E9A270501 - E9A280500
6655V_X, 6655V_XA, 6655V_XC, 6655V_XC 315529501 - 315537500
6655V_XM 315943916 - 315958815

Introduction 9/2014 Initial Issue - Xerox Internal Use Only

Product Codes and Serial Number Range xviii Xerox WorkCentre 6655 Color Multifunction Printer
 1 Service Call Procedures
Service Call Procedures.................................................................................................. 1-3
SCP 1 Initial Actions........................................................................................................ 1-4
SCP 2 First Call Actions .................................................................................................. 1-4
SCP 3 Normal Call Actions ............................................................................................. 1-5
SCP 4 Fault Analysis ...................................................................................................... 1-5
SCP 5 Subsystem Maintenance ..................................................................................... 1-6
SCP 6 Final Actions ........................................................................................................ 1-7
SCP 7 Configurations and Options ................................................................................. 1-8

Initial Issue - Xerox Internal Use Only 9/2014 Service Call Procedures
Xerox WorkCentre 6655 Color Multifunction Printer 1-1
Service Call Procedures 9/2014 Initial Issue - Xerox Internal Use Only
1-2 Xerox WorkCentre 6655 Color Multifunction Printer
Service Call Procedures 2. Accessing fault history in Service Diagnostics
a. Enter Service Diagnostics.
This section provides an overview of the steps a service technician should take to service the
printer and attached options. The printer’s diagnostic routines report problems using error mes- b. Touch Service Info.
sages and fault codes displayed on the Control Panel, logged in the Service Usage Profile, or c. Touch dc122 Fault History.
by flashing LEDs. These error indications serve as the entry point into the troubleshooting pro- 3. If the printer is connected to a network and has a TCP/IP address, view the printer’s web
cess. System problems not directly indicated by or associated with an error message or fault page using a web browser.
code are covered in Section 6, General Procedures. Print-quality problems are covered in Sec-
a. Open a web browser.
tion 3, Image Quality
b. Enter the printer’s IP address as the URL.
The steps listed here are a guide for performing any service on this printer. If you choose not to c. Select Support --> Troubleshooting --> Diagnostics Logs and the fault history
use these steps, it is recommended that you start at the appropriate troubleshooting procedure displays.
and proceed from there. When servicing the printer, follow the safety measures detailed in the
[[Service Safety Summary]] section.

1. Identify the problem.

• Verify the reported problem does exist.
• Check for any error codes and write them down.
• Print normal customer prints and service test prints.
• Make note of any print-quality problems in the test prints.
• Make note of any mechanical or electrical abnormalities present.
• Make note of any unusual noise or smell coming from the printer.
• Print a Usage Profile, if the printer is able to print.
• View the Engine Error and Jam Histories under the Tools menu.
• Verify the AC input from the wall outlet is within specifications.
2. Inspect and clean the printer.
• Follow the cleaning instructions.
• Verify that the power cord is in serviceable condition.
• Restart the printer to check if the error reoccurs.
3. Find the cause of the problem.
• Use the troubleshooting procedures to find the root cause of the problem.
• Use Service Diagnostics to check the printer and optional components.
• Use the Wiring Diagrams and Plug/Jack Locator to locate test points.
• Take voltage readings as instructed in the troubleshooting procedure.
4. Correct the problem.
• Use the Parts List to locate a part number.
• Use the Repair procedures to replace the part.
5. Final Checkout
• Test the printer to verify the problem is corrected and no new problems arose.
Accessing Engine Fault History
Listed below are three ways in which you can access fault history. Additional fault history infor-
mation appears in GP 2.

NOTE: Error and fault code definitions appear in Section 2.

1. Read (if possible) fault history from the Machine Status menu on the Control panel. The
error history is listed on screen.

Initial Issue - Xerox Internal Use Only 9/2014 Service Call Procedures
Xerox WorkCentre 6655 Color Multifunction Printer 1-3 Service Call Procedures
SCP 1 Initial Actions SCP 2 First Call Actions
Initial Actions are used to gather information on printer performance First Call Actions are used for the first service call.

Start a service call with SCP 1 and end with SCP 6 Final Actions. Procedure
1. Check the machine configuration with the customer, refer to SCP 7 Configurations and
Also refer to SCP 7.
Options. Check that all required hardware and software is installed and/or enabled.
2. Check that all the relevant machine settings are correctly entered, refer to GP 4 System
Procedure Administration Tools.
WARNING 3. If a fault is present, go to SCP 3 Normal Call Actions. If there is no fault present, go to
Switch off the electricity to the machine. Disconnect the power cord from the customer SCP 6 Final Actions.
supply while performing tasks that do not need electricity. Electricity can cause death or
4. Enter the printer and customer details in the service log.
injury. Moving parts can cause injury.
WARNING
Do not work in a confined space. 1m (39 inches) space is needed for safe working.

NOTE: Ignore references to options not installed on the printer.

1. Take note of symptoms or error messages.

2. Ask the operator to describe or demonstrate the problem.
3. Make sure:
a. The power cord is connected to the wall outlet and to the machine.
b. Paper is loaded correctly and all paper trays and covers are closed
c. If installed, the USB cable or network connection is installed correctly.
4. If available, check the service log book for any previous actions that may be relevant to
the call.
5. If this is the first service call to this printer, perform SCP 2 First Call Actions, otherwise go
to SCP 3 Normal Call Actions.

Service Call Procedures 9/2014 Initial Issue - Xerox Internal Use Only
SCP 1, SCP 2 1-4 Xerox WorkCentre 6655 Color Multifunction Printer
SCP 3 Normal Call Actions SCP 4 Fault Analysis
Normal Call Actions are used to determine the reason for the service call. Fault Analysis is used to identify a fault.

Procedure Procedure
When diagnosing or repairing a fault in a particular subsystem, exercise the machine in all
NOTE: If a fault message appears at any time. Refer directly to the RAP for the fault message
modes until the fault is determined. In the instance of finding more than one fault or failure, cor-
and perform the procedure.
rect one fault before going to the next fault. If no fault is found, go to SCP 5 Subsystem Mainte-
If possible, perform the following: nance.
1. Review any defective print samples.
2. Determine that the user accessible settings are correct. If necessary refer to the user doc- Fault Codes
umentation. If a fault code is displayed, go to the relevant RAP.
3. Check all job queues and verify with the customer any requirement to print the documents
in memory, before switching off the power or clearing memory. Control Panel Faults
4. Print the Customer Assistance Report (Call for Assistance), then record the total print If the power is on but the Control Panel is blank, test the Control Panel with dC330.
count.
5. Go to SCP 4 Fault Analysis. Stapler Faults
If the machine has a stapler fault, test the Stapler with dC330.

Image Quality Defects

If the image quality is defective, go to the IQ1 Image Quality Entry RAP.

Additional Information
If necessary, refer to the following general procedures and information:
• GP 1 Service Diagnostics Entry and Exit
• GP 2 Fault Codes and History Logs
• GP 3 Customer Administration Tools
• GP 4 How to Switch Off or Switch On the Printer
• GP 5 Service Copy (Tools) Mode
• GP 6 Electrostatic Discharge Prevention
• GP 7 Machine Specifications
• GP 8 General Disassembly Precautions
• GP 9 Installing System Software
• GP 10 How to Check a Motor
• GP 11 How to Check a Sensor
• GP 12 How to Check a Solenoid or Clutch
• GP 13 How to Check a Switch
• GP 14 Cloning Network Configurations
• GP 15 - removed -
• GP 16 Separate System Modules
• GP 17 External FAX Line Test
• GP 18 Printing Reports
• GP 19 Intermittent or Noise Problem
• GP 20 How to Safely Lift or Move the Printer
• GP 21 Machine Lubrication

Initial Issue - Xerox Internal Use Only 9/2014 Service Call Procedures
Xerox WorkCentre 6655 Color Multifunction Printer 1-5 SCP 3, SCP 4
• GP 22 Installation Space Requirements SCP 5 Subsystem Maintenance
• GP 23 First Print Output Time
Subsystem Maintenance contains information regarding the component life of the machine.
• GP 24 Restriction of Hazardous Substances (RoHS)
• GP 25 Remote Control Panel Procedure
• GP 26 Media Specifications WARNING
• GP 27 Environmental Data
Switch off the electricity to the machine. Disconnect the power cord from the customer
• GP 28 Toner CRUM Conversion supply while performing tasks that do not need electricity. Electricity can cause death or
• GP 29 How to Check a Dispenser Motor injury. Moving parts can cause injury.
• GP 30 IP (ESS) Specifications 1. Clean the Pick Rollers on every call.
• GP 31 IIT Specifications 2. Use the Control Panel to check maintenance item counters.
• GP 32 Fax Specifications 3. Compare the counter values to those listed in Table 1.
• GP 33 Interior and Exterior Cleaning 4. Advise the customer of any routine maintenance items that are approaching or over the
service limit.
Inspection
Rollers
Replace rollers when you see any of the following defects:

• Flat spots
• Out of roundness
• Cracked rubber
• Loss of traction (tackiness) causing pick or feed failures
Gears
Replace gears that show any signs of wear or damage. Look for these problems:

• Thinned gear teeth

• Bent or missing gear teeth; check especially where a metal gear drives a plastic gear.
• Fractured or cracked gears (oil or incorrect grease on a plastic gear can cause the gear to
crack).
Lubrication
CAUTION
Plastic parts deteriorate when unspecified lubricants or chemicals are used. To avoid damage,
use only approved lubricant.
The printer is lubricated during assembly at the factory and does not require periodic lubrica-
tion. Some parts require lubrication following replacement. These parts are identified in the
replacement procedures. When lubricating during replacement, use approved grease.

Component Life
The design life of the major components are shown in Table 1. Environmental conditions and
actual use will vary these factors. The component life shown in Table 1 is for reference only.

Table 1 Component Life Expectancies

Item Description Print Life
1. Pick and Nudger Rollers 100,000 pages
2. Separator Roller 100,000 pages

Service Call Procedures 9/2014 Initial Issue - Xerox Internal Use Only
SCP 4, SCP 5 1-6 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 1 Component Life Expectancies SCP 6 Final Actions
Item Description Print Life Final Actions are used to evaluate the total operation of the system and to identify the actions
3. Transfer Roller 100,000 images required to complete the service call.
4. Fuser 100,000 images
5. Feed Roller 100,000 pages
Procedure
Complete the following, if a fault is identified, return to SCP 4 Fault Analysis:
HFSI • Perform the end of call subsystem maintenance actions, SCP 5 Subsystem Maintenance.
The High Frequency Service Items are shown in Table 2. • Exercise the machine in all modes, printing from all trays. If a fault message is displayed
or some other problem is evident, go to SCP 4 Fault Analysis.
Table 2 High Frequency Service Items
• Make a print of a customer document.
Item Description Recommended Life Reference
• If any of the customers selections were changed, return them to the customers preferred
Drum Cartridge The total sides of copies and 85k impressions PL 5.1 Item 4 settings. Refer to GP 4 System Administration Tools.
prints after the last HFSI reset. PL 5.1 Item 5 • At the first service and at any subsequent service where changes are made or options are
PL 5.1 Item 6 added, print the configuration report and store it with machine log book. Discard any pre-
PL 5.1 Item 7 vious versions of the configuration report.
Bypass Tray Pick Sheets fed from Tray 1 after last 100k feeds PL 13.2 Item 10 • Remove and destroy any copies of test patterns.
Roller HFSI reset. • Ensure the machine and service area are clean before leaving the customer premises.
Tray 1 Pick Roller Sheets fed from Tray 1 after last 100k feeds PL 9.1 Item 4
HFSI reset. • Provide customer training if required.
Optional Tray Pick Sheets fed from Tray 2 after last 100k feeds PL 10.2 Item 3
Rollers HFSI reset.
Maintenance Kit Total prints after the last HFSI 200k impressions -
reset.

Initial Issue - Xerox Internal Use Only 9/2014 Service Call Procedures
Xerox WorkCentre 6655 Color Multifunction Printer 1-7 SCP 5, SCP 6
SCP 7 Configurations and Options
Configurations and Options
Refer to Table 1 for basic configurations and options. This service manual covers all configura-
tions. Within this manual ignore any references to options that are not installed.

Table 1 WorkCentre 6655 Configurations

Features 6655 DN
Processor Speed 1 GHz - Dual Core
Memory 4 GB
Print Speed Color: 47 ppm, Letter / 45 ppm, A4
Mono: 36 ppm, Letter / 35 ppm, A4
PS3 Fonts (136) Standard
PCL6 Fonts (80 Scalable, 9 Bitmap) Standard
USB 2.0 Standard
Ethernet Interface 10/100/1000 Base-TX
Automatic Document Feeder Standard
Bypass Tray (150 sheet) Standard
Tray 1 (550 sheet) Standard
Tray 2 (550 sheet) Optional
Duplex Standard
Stapler Standard
Hard Disk Drive Standard
FAX Standard
Wireless LAN Optional
Printer Resolution 600 x 600 dpi
2400 x 600 dpi

Service Call Procedures 9/2014 Initial Issue - Xerox Internal Use Only
SCP 7 1-8 Xerox WorkCentre 6655 Color Multifunction Printer
 2 Status Indicator RAPs
Chain 2 - User Interface Chain 10 - Fuser / Exit
02-302-00, 02-306-00, 02-308-00 Flash Failure ............................................................. 2-5 10-311-00 to 10-376-00 Fuser Thermal Error ................................................................. 2-29
02-312-00 Application Checksum Failure ....................................................................... 2-5 10-317-00, 10-902-00 Fuser Failure, or Missing ............................................................ 2-30
02-315-00 Service Registry Bad Data............................................................................. 2-6 10-319-00 Fuser Differential Amp Fail ............................................................................ 2-31
02-316-00, 02-317-00 SRS Error .................................................................................... 2-6 10-329-00 Fuse Cut Error ............................................................................................... 2-32
02-320-00 Data Time Out Error ...................................................................................... 2-7 10-420-00, 10-421-00 Fuser End of Life ......................................................................... 2-32
02-321-00 XEIP Browser Does Not Respond or is Dead................................................ 2-7 10-903-00 Main Error updating data .............................................................................. 2-33
02-380-00, 02-381-00 UI Communication Fault .............................................................. 2-8 12-930-00 Exit Tray Full ................................................................................................. 2-33
02-390-00 Configurable Services Not Stable .................................................................. 2-8
Chain 16 - Network Controller
Chain 3 - Machine Run Control 16A Network Error Entry ................................................................................................. 2-35
03-301-00 Engine Serial Number Failure........................................................................ 2-9 16B FTP or SMB Unable to Connect to Remote Server ................................................. 2-35
03-302-00 Engine XPC Failure ....................................................................................... 2-9 16C Remote Directory Lock Failed ................................................................................. 2-37
03-303-00 Engine Data Error .......................................................................................... 2-10 16-000-00 to 16-000-26 Cannot Create RPC With ENS ................................................. 2-38
03-306-00 Upgrade Request Failed - Downgrade Not Allowed ...................................... 2-10 16-001-09 to 16-001-90 Unable to do Startup Synchronization ...................................... 2-38
03-307-00 Sync Failure. Unable to Enter SW Upgrade .................................................. 2-11 16-002-09 to 16-002-46 Unable to Register as RPC Server........................................... 2-39
03-316-00 Communication Fault ..................................................................................... 2-12 16-003-09 to 16-003-90 Too Many IPC Handles ............................................................ 2-39
03-317-00, 03-318-00, 03-319-00 IOT NVM Error .......................................................... 2-12 16-004-14 to 16-005-92 RPC Failure to Register............................................................ 2-40
03-320-00 Upgrade Failed - Incompatible Product Type ................................................ 2-13 16-006-09, 16-006-19 Cannot Register for Events ......................................................... 2-40
03-324-00 File Transfer Failure During SW Upgrade ..................................................... 2-13 16-007-92 to 16-010-99 Invalid IPC / RPC Data ............................................................. 2-41
03-325-00 Wall Clock Fault............................................................................................. 2-14 16-013-14, 16-014-14 Copier Synchronization Error ...................................................... 2-41
03-326-00 Upgrade Failed - Version Same as Machine ................................................. 2-14 16-015-14, 16-015-19 SESS Data Store Variable Not Set.............................................. 2-42
03-327-00 SW Upgrade Failed ....................................................................................... 2-15 16-016-14, 16-016-19 Data Store Initialization Failed..................................................... 2-42
03-329-00 Upgrade Request Failed due to Active Diagnostics ...................................... 2-15 16-017-19 to 16-021-26 Send Event Failure / Could Not Get Host Name RAP.............. 2-43
03-330-00 Upgrade Failed Security Feature Active ........................................................ 2-16 16-021-46 Unable to Get Host Name.............................................................................. 2-43
03-331-00, 03-332-00 Communication Fault with NC..................................................... 2-16 16-023-09, 16-023-26 RPC Call Failure.......................................................................... 2-44
03-338-00 CCM Reset .................................................................................................... 2-17 16-026-09 to 16-026-92 Memory Allocation Error ........................................................... 2-44
03-346-00, 03-347-00 Communication Fault with UI ...................................................... 2-17 16-027-90 Unable to Obtain Well Known Queue ID........................................................ 2-45
03-355-00 CCM POST Failure........................................................................................ 2-18 16-028-09, 16-028-90 Unable to Complete RPC Call / Invalid Range String.................. 2-45
03-380-00 POST Boot Failure......................................................................................... 2-18 16-030-19 Unable to Obtain Client RPC Handle............................................................. 2-46
03-390-00 Upgrade Automation Failed ........................................................................... 2-19 16-031-09 Invalid Event Notification Received................................................................ 2-46
03-397-00 System Configuration Error ........................................................................... 2-19 16-032-19, 16-039-00 NVM Connection Failure / Pthread Create Error ......................... 2-47
03-398-00 SIM Card Serial Number Mismatch ............................................................... 2-20 16-040-92 Semaphore Fault ........................................................................................... 2-47
03-399-00 SIM Card Data Cannot be Processed ........................................................... 2-20 16-048-09 Unable to Set Binding .................................................................................... 2-48
03-401-00, 03-403-00 FAX Not Detected ....................................................................... 2-21 16-048-14, 16-048-90 Cannot Set NC Client Binding ..................................................... 2-48
03-417-00 Incompatible FAX Software Detected ............................................................ 2-21 16-048-99 Cannot Set NC Client Binding........................................................................ 2-49
03-777-00 Power Loss Detected..................................................................................... 2-22 16-150-09 Cannot Send Registration Event.................................................................... 2-49
03-788-00 Failed to Exit Power Save Mode.................................................................... 2-22 16-150-14 Unable to Obtain RPC Transport ................................................................... 2-50
03-790-00 Time Zone Overridden to GMT: DST Disabled.............................................. 2-23 16-150-19 NC Sync Peer Service Fault .......................................................................... 2-50
16-150-26 Fault Service Failed to Write to Log............................................................... 2-51
Chain 5 - IIT 16-150-90 Invalid IPC Request Destination .................................................................... 2-51
05-110-00 DADF Pickup Jam ......................................................................................... 2-25 16-150-92 Consumer Interface Fault .............................................................................. 2-52
05-112-00 DADF Jam During Rotation of Document ...................................................... 2-25 16-151-09 to 16-151-19 Invalid IPC Command / SNMP Reg Failure.............................. 2-52
05-121-00 CVT-DADF Feed Sensor On Jam ................................................................. 2-26 16-151-26 Fault Service Failed to Get a Log Handle ...................................................... 2-53
05-305-00 DADF Cover Open......................................................................................... 2-26 16-151-90 Put Environment Variable Failure .................................................................. 2-53
05-900-00 ADF Sensor Static Jam ................................................................................. 2-27 16-152-09 Internal IPC Failure ........................................................................................ 2-54
05-940-00 DADF No Original Fail ................................................................................... 2-27 16-152-14 Empty Internal Event Received by ENS ........................................................ 2-54
05-941-00 DADF Not Enough Document........................................................................ 2-28

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-1
16-152-19 Unable to Send Request to SESS ................................................................. 2-55 16-616-35 to 16-616-46 Data Store Initialization Failure................................................. 2-81
16-152-26 Fault Service Could Not Open Fault Log ....................................................... 2-55 16-616-47 IPC Message Failure ..................................................................................... 2-81
16-153-09 Unable to Obtain IPC Queue ......................................................................... 2-56 16-616-67 Submission of Email or IFax Job Failed......................................................... 2-82
16-153-14 Cannot Initialize Internal Event List ............................................................... 2-56 16-617-19 Send Event Failure Unable to send event to NC ........................................... 2-82
16-153-19 NVM Save Failure.......................................................................................... 2-57 16-617-47 Upgrade Request Failed -TAR Extraction Failure.......................................... 2-83
16-154-09 IP Registration Configuration Error ................................................................ 2-57 16-618-47 DLM SPI Extraction Failure RAP ................................................................... 2-83
16-154-14 Cannot Create Internal Event Queue ............................................................ 2-58 16-619-14 to 16-619-93 Unable to Unregister Registration service ................................ 2-84
16-154-19 NVM Read Failure ......................................................................................... 2-58 16-619-47 Upgrade Request Failed - DMPR Failure at Web.......................................... 2-84
16-155-19 NC Failed to Boot from Alternate Partition..................................................... 2-59 16-620-07 to 16-620-99 Registration Service Failed....................................................... 2-85
16-156-19 Service Run Loop Failed ............................................................................... 2-59 16-620-47 Upgrade Request Rejected............................................................................ 2-85
16-160-09 NC Registration Service Process Death ........................................................ 2-60 16-621-00 to 16-621-99 Unable to Get Host Name ........................................................ 2-86
16-161-09 to 16-164-09 Cannot Send Reg Event / List Access Failure ......................... 2-60 16-622-07 to 16-622-46 Corrupt O/S RPC Table............................................................ 2-86
16-429-00, 16-431-00 Unable to Write to Data Store / Get System Time....................... 2-61 16-622-47 FTP "get" Failure............................................................................................ 2-87
16-432-00 Unknown Scheduler Received....................................................................... 2-61 16-622-66 to 16-622-68 Failed to Unregister as RPC Service During Shutdown ........... 2-87
16-433-00 RPC Call Failed ............................................................................................. 2-62 16-623-35, 16-623-47, 16-624-46 RPC Call Failure ....................................................... 2-88
16-434-00 Unable to Change Scheduler in DM .............................................................. 2-62 16-625-35 to 16-625-90 Invalid IPC Type ....................................................................... 2-88
16-600-07 to 16-600-67 Cannot Create RPC Connection .............................................. 2-63 16-626-00 to 16-626-67 Memory Allocation Error ........................................................... 2-89
16-601-26 to 16-601-46 Queue Setup / System Control Failed / Invalid UI Info............. 2-63 16-628-07 to 16-628-67 Range String Variable Error ..................................................... 2-89
16-601-47 Diag Service Failed IPC Queue Setup .......................................................... 2-64 16-629-11 to 16-629-93 No Acknowledgment For RPC.................................................. 2-90
16-601-66, 16-601-67 Unable to do Start up Synchronization........................................ 2-64 16-630-09 to 16-630-99 Unable to Get RPC Client Handle ............................................ 2-90
16-601-68 Unable to Start Up and Sync with SC ............................................................ 2-65 16-631-19 to 16-636-99 XDR Data Error ........................................................................ 2-91
16-601-105 Unable Synchronize At Start Up .................................................................. 2-65 16-637-11 to 16-637-95 File Error................................................................................... 2-91
16-602-07 to 16-602-105 RPC Service Registration Failure........................................... 2-66 16-638-66 to 16-641-46 O/S Failure ............................................................................... 2-92
16-603-11, 16-603-28 Replace Handler Call Failed........................................................ 2-66 16-642-46 to 16-645-67 File I/O Errors ........................................................................... 2-92
16-603-46 to 16-603-67 Too Many IPC Handlers ........................................................... 2-67 16-646-26 to 16-650-99 Invalid Service Attribute............................................................ 2-93
16-603-68 Replace Handler Call Failed .......................................................................... 2-67 16-651-19 to 16-656-38 Registration Failure .................................................................. 2-93
16-603-105, 16-604-14 RPC Call Failure to NC Registration Service ............................ 2-68 16-658-07 Unable to Get Host Name.............................................................................. 2-94
16-604-38,16-604-99 Could Not Register With Reg Service .......................................... 2-68 16-659-07 to 16-667-95 Parser Utility Errors .................................................................. 2-94
16-604-105 SESS Data Store Variable Not Set .............................................................. 2-69 16-668-47 Write NVM Failed........................................................................................... 2-95
16-605-07 Unable to Register with Registration Service ................................................ 2-69 16-668-93, 16-668-95 Unable To Determine Local File Statistics................................... 2-96
16-605-14 to 16-605-105 RPC Registration Failure....................................................... 2-70 16-669-28 to 16-670-00 Unable To Write Job Template................................................. 2-96
16-606-07 to 16-606-99 Cannot Register For Events ..................................................... 2-70 16-670-11 to 16-671-47 Unable To Decode Template File............................................. 2-97
16-606-105 OS Problem ................................................................................................. 2-71 16-671-93 to 16-673-95 File Error................................................................................... 2-97
16-607-19 to 16-608-14 Invalid RPC Data / Unable to Free Resources ......................... 2-71 16-674-00 to 16-709-00 XSA Database Error ................................................................. 2-98
16-608-26 Fault Service Failed to Unbind RAP .............................................................. 2-72 16-710-00 to 16-750-11 Unable To Create Client Handle............................................... 2-98
16-608-28 to 16-608-67 Unable to Free IPC Resources ................................................ 2-72 16-750-14 to 16-750-90 Invalid Request......................................................................... 2-99
16-608-105 Build UI SVC Obtain Client Failed ............................................................... 2-73 16-750-92 to 16-751-26 Database Error ......................................................................... 2-99
16-609-07 Unknown Message Received ........................................................................ 2-73 16-751-28 to 16-751-93 Unknown Attribute .................................................................... 2-100
16-609-19 to 16-609-105 Invalid IPC Data Failure ........................................................ 2-74 16-752-00 to 16-752-47 Invalid File Details .................................................................... 2-100
16-610-00, 16-610-07 IPC Send Failure ......................................................................... 2-74 16-752-66 to 16-753-28 Scan to FAX Registration Error ................................................ 2-101
16-610-09 Cannot send IPC Message to NC Platform ................................................... 2-75 16-753-35 to 16-754-09 Data Store Read Failure........................................................... 2-101
16-610-11 to 16-610-90 Unable to Send IPC Message .................................................. 2-75 16-754-14 to 16-754-68 OS Error ................................................................................... 2-102
16-610-92 Failure to Send Queue Status ....................................................................... 2-76 16-754-90 to 16-755-28 Fault Service Error.................................................................... 2-102
16-610-99 Unable to Send IPC Message RAP ............................................................... 2-76 16-755-35 to 16-756-14 Request Error ........................................................................... 2-103
16-611-07, 16-611-38 Client Removal Failure ................................................................ 2-77 16-756-26 to 16-757-26 NVM Corrupt............................................................................. 2-103
16-611-19 to 16-611-99 Unable to Remove RPC Connection........................................ 2-77 16-757-35 to 16-758-26 Unable to Write NVM................................................................ 2-104
16-612-09 to 16-612-68 Unable to Do Shutdown Sync RAP .......................................... 2-78 16-758-35 to 16-759-26 Service Run Loop Failed .......................................................... 2-104
16-612-47 Upgrade Request Failed - Downgrade Not Allowed ...................................... 2-78 16-759-46 to 16-760-46 Fail to Enable Process.............................................................. 2-105
16-613-09 to 16-614-19 DC Sync / Comms Error........................................................... 2-79 16-760-47 to 16-761-46 File Error................................................................................... 2-105
16-614-47 Invalid Software Upgrade .............................................................................. 2-79 16-761-47 to 16-769-95 Other Network Faults 1............................................................. 2-106
16-615-35 to 16-615-90 SESS Data Store Variable Not Set .......................................... 2-80 16-770-09 to 16-779-95 Other Network Faults 2............................................................. 2-107
16-615-47 Multiple Software Upgrade File...................................................................... 2-80 16-780-00 to 16-789-47 Other Network Faults 3............................................................. 2-108

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
2-2 Xerox WorkCentre 6655 Color Multifunction Printer
16-790-09 to 16-799-47 Other Network Faults 4 ............................................................ 2-109 Chain 22 - System Errors
16-800-09 to 16-809-47 Other Network Faults 5 ............................................................ 2-110 22-300-05 to 22-309-04 Other Network Faults 24........................................................... 2-139
16-810-00 to 16-819-47 Other Network Faults 6 ............................................................ 2-111 22-310-04 to 22-318-04 Other Network Faults 25........................................................... 2-139
16-820-47 to 16-829-47 Other Network Faults 7 ............................................................ 2-112 22-319-04 IOT Integrity Problem While Printing a Job.................................................... 2-140
16-830-47 to 16-839-47 Other Network Faults 8 ............................................................ 2-113 22-320-00, 22-321-00 Scan to File Fault......................................................................... 2-140
16-840-47 to 16-849-47 Other Network Faults 9 ............................................................ 2-113 22-321-04 RS422l ResponseTimeOutError .................................................................... 2-141
16-850-47 to 16-859-47 Other Network Faults 10 .......................................................... 2-114 22-322-00 to 22-327-00 Service Faults........................................................................... 2-141
16-860-47 to 16-869-47 Other Network Faults 11 .......................................................... 2-114 22-328-00 Incomplete System Information ..................................................................... 2-142
16-870-47 to 16-879-47 Other Network Faults 12 .......................................................... 2-115 22-330-00 Supplies Plan Activation Code Entry Locked................................................. 2-142
16-880-47 to 16-890-47 Other Network Faults 13 .......................................................... 2-115 22-330-01 to 22-332-00 Queue Timed Out ..................................................................... 2-143
16-891-00, 16-892-00 Edge Server Error ....................................................................... 2-116 22-335-00 to 22-340-00 Service Faults........................................................................... 2-143
16-900-19 to 16-909-19 Other Network Faults 14 .......................................................... 2-116 22-350-01, 22-350-02 Software Detects Non-Valid Xerox SOK ..................................... 2-144
16-910-19 to 16-919-19 Other Network Faults 15 .......................................................... 2-117 22-351-01 to 22-351-03 SOK Write Failure..................................................................... 2-144
16-920-19 to 16-929-19 Other Network Faults 16 .......................................................... 2-117 22-352-00, 22-352-01 Serial Number Lost/Missing......................................................... 2-145
16-930-19 to 16-939-19 Other Network Faults 17 .......................................................... 2-118 22-360-00 Service Plan Inconsistent............................................................................... 2-145
16-940-19 to 16-949-19 Other Network Faults 18 .......................................................... 2-118 22-370-00 Unable to Communicate with XSA Database ................................................ 2-146
16-950-19 to 16-959-19 Other Network Faults 19 .......................................................... 2-119 22-371-00, 22-372-00 Fax Application Registration Error............................................... 2-146
16-960-19 to 16-969-19 Other Network Faults 20 .......................................................... 2-119 22-407-00 to 22-421-00 Embedded Fax Faults .............................................................. 2-147
16-975-19 to 16-979-35 Other Network Faults 21 .......................................................... 2-120 22-701-04 Module Completion Fault ............................................................................... 2-147
16-980-00 to 16-989-35 Other Network Faults 22 .......................................................... 2-120 22-720-00, 22-721-00 Service Registry Errors................................................................ 2-148
16-990-00 to 16-999-35 Other Network Faults 23 .......................................................... 2-121 22-750-04 to 22-755-17 Configuration Mismatch RAP ................................................... 2-148
24-340-00 IOT Firmware Error ........................................................................................ 2-149
Chain 19 - Image Processing 24-362-00 IOT Start Image Marking Timeout.................................................................. 2-149
19-300-00 to 19-310-00 Image Disk (HDD) Failure ........................................................ 2-123 24-920-00 IOT Standard Stacker Full ............................................................................. 2-150
19-401-00, 19-402-00 Out of Memory............................................................................. 2-123
19-403-00 Out of Memory - Job in EPC.......................................................................... 2-124 Chain 42 - Drive, Cooling, and Laser Unit
19-409-00 Video Integrity Fault ....................................................................................... 2-124 41-340-00 to 41-414-00 IOT NVM Error.......................................................................... 2-151
19-410-00 to 19-410-13 Image Structure Failure RAP ................................................... 2-125 41-388-00 Marking Logic Fail.......................................................................................... 2-151
19-750-00 EPC Memory Size Fault ................................................................................ 2-125 42-313-00 Side Cooling Fan Failure ............................................................................... 2-152
19-752-00 Image Rotation Config Fault .......................................................................... 2-126 42-324-00 Sub (Paper Transport) Motor Failure ............................................................. 2-152
19-754-00 Image Disk Config Fault ................................................................................ 2-126 42-325-00 Motor Failure.................................................................................................. 2-153
19-760-00 Test Patterns are Missing from EPC ............................................................. 2-127 42-338-00 IP Fan Fail...................................................................................................... 2-153
42-700-00 Over Heat Stop .............................................................................................. 2-154
Chain 20 - Fax 45-301-00 to 45-305-00 IOT I/F Error ............................................................................. 2-155
20A Fax Troubleshooting Entry....................................................................................... 2-129 45-310-00 Image Ready NG ........................................................................................... 2-155
20B Unable To Send A Fax ............................................................................................ 2-129 45-311-00 Controller Comm Fail ..................................................................................... 2-156
20C Unable To Send A Fax To Some Machines ............................................................ 2-130
46-310-00 IOT HVPS Error ............................................................................................. 2-156
20D Unable To Receive A Fax........................................................................................ 2-131
20E Fax Will Not Print ..................................................................................................... 2-132 Chain 62 - Scanner
20F Fax Board Checkout ................................................................................................ 2-132 61-020-00 to 61-340-00 ROS Error................................................................................. 2-157
20G Fax Problems on Digital Networks .......................................................................... 2-133 61-320-00 Polygon Motor Fail ......................................................................................... 2-158
20H Fax Tab Not Available RAP ..................................................................................... 2-133 61-370-00 IOT ROS Failure ............................................................................................ 2-158
20-302-00 to 20-305-00 Fax Board Hardware or Software Error.................................... 2-134 62-310-00 to 62-393-00 IIT Scan Error ........................................................................... 2-159
20-320-00 Fax Fault Not Cleared by Card Reset............................................................ 2-134 62-316-00 DADF Motor Fail ............................................................................................ 2-160
20-322-00 NV Device Not Fitted to Basic Fax Card........................................................ 2-135 62-790-00 PreIPS XFail .................................................................................................. 2-160
20-323-00, 20-324-00 Fax System Memory is Low ........................................................ 2-135
20-327-00 Registers Cannot be Accessed on Extended Card ....................................... 2-136 Chain 70 - Media Handling
20-331-00 to 20-341-00 Fax Network Line 1 Fault ......................................................... 2-136 70-099-00 I/F IOTFED Communication.......................................................................... 2-161
20-342-00 Error Accessing File on a NV Device............................................................. 2-137 71-101-00 Tray1 Misfeed Jam ........................................................................................ 2-161
20-345-00 FaxPort1 Modem Failure ............................................................................... 2-137 71-215-00 Tray 1 Feeder Composition Error .................................................................. 2-162
20-701-00 Phonebook Download Failed......................................................................... 2-138 72-098-00 Option Feeder Mode ...................................................................................... 2-162
20-710-00, 20-711-00 Fax Card Overwrite Errors .......................................................... 2-138 72-101-00 Tray2 Misfeed Jam ........................................................................................ 2-163

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-3
72-102-00 Feeder Path 2 Sensor On Jam (RC2) ........................................................... 2-163 OF - Other Faults
72-211-00 IOT Option Feeder2 Failure........................................................................... 2-164 OF 1 Unusual Noises ...................................................................................................... 2-191
72-215-00 Tray 2 Feeder Composition Error .................................................................. 2-164 OF 2 Control Panel Touch Screen Failure ...................................................................... 2-192
72-216-00 Option Feeder Motor2 Error........................................................................... 2-165 OF 3 Status Codes and Messages ................................................................................. 2-193
75-101-00 Bypass Misfeed Jam...................................................................................... 2-165 OF 4 Convenience Stapler Failure .................................................................................. 2-208
75-910-00 Bypass Tray Detached .................................................................................. 2-166 OF 5 Multi-feed Error....................................................................................................... 2-209
77-101-00 Regi Off Jam .................................................................................................. 2-166 OF 6 Power On Self Test (POST) ................................................................................... 2-210
77-102-00 Psync On Jam ............................................................................................... 2-167 OF 7 Registration Sensor................................................................................................ 2-212
77-103-00 to 77-106-00 Exit On/Off Jam ........................................................................ 2-167 OF 8 Feed Clutch ............................................................................................................ 2-212
77-110-00 Feeder Regi Sensor On Jam ......................................................................... 2-168 OF 9 Registration Clutch ................................................................................................. 2-213
77-123-00 Duplex Regi On Jam...................................................................................... 2-168 OF 10 550 Option Main Feed Assembly Path Sensor .................................................... 2-213
77-300-00 Front Door Interlock Open ............................................................................. 2-169 OF 11 550 Option Registration Clutch Assembly............................................................ 2-214
77-301-00 Rear Door Interlock Open.............................................................................. 2-169 OF 12 550 Option Feed Clutch Assembly....................................................................... 2-215
77-302-00 Right Door Interlock Open ............................................................................. 2-170 OF 13 550 Option Drive Assembly.................................................................................. 2-216
77-900-00 IOT Static Jam ............................................................................................... 2-170 OF 14 Bypass Tray Feed Solenoid ................................................................................. 2-217
77-901-00 Optional Feeder Static Jam ........................................................................... 2-171 OF 15 Exit Sensor ........................................................................................................... 2-217
OF 16 Exit Drive Assembly Clutch 1 ............................................................................... 2-218
Chain 90 - Xerographic, Thermal, IOT, SW Upgrade OF 17 Exit Drive Assembly Clutch 2 ............................................................................... 2-218
91-312-00 CC HVPS Comm Fail .................................................................................... 2-173
OF 18 +24 VDC Power ................................................................................................... 2-219
91-400-00, 91-911-00 Waste Toner Bottle Near Full ...................................................... 2-173
OF 19 +5 VDC Power ..................................................................................................... 2-219
91-401-00 to 91-934-00 Drum Cartridge Life Near End.................................................. 2-174
OF 20 +3.3 VDC Power .................................................................................................. 2-220
91-912-00 Drum (K) Not in Position ................................................................................ 2-174
91-913-00 K Drum Cartridge Dead Stop Error ................................................................ 2-175
91-914-00, 91-921-00 K Drum Comm Error.................................................................... 2-175
91-915-00 to 91-923-00 Drum X CRUM Data Broken .................................................... 2-176
91-917-00 Drum Y Comm Fail ........................................................................................ 2-176
91-918-00 Drum M Comm Fail........................................................................................ 2-177
91-919-00 Drum C Comm Fail ........................................................................................ 2-177
91-927-00 to 91-929-00 Drum X CRUM Not Position ..................................................... 2-178
91-936-00 to 91-939-00 Drum X Cartridge ID Error ........................................................ 2-178
92-310-00, 92-311-00 CTD Sensor Fail.......................................................................... 2-179
92-584-00, 92-586-00 Internal - Over Temp Failure ....................................................... 2-179
92-652-00 Dirty CTD Sensor........................................................................................... 2-180
92-653-00 CTD Sensor TC/SAD Patch Fail (V Dark) .................................................... 2-180
92-661-00 Environment Temperature Sensor Fail......................................................... 2-181
92-670-00 to 92-673-00 X Patch Error........................................................................... 2-181
92-805-00 24V Fan Off Detect ........................................................................................ 2-182
93-320-00 Developer Motor Fail .................................................................................... 2-182
93-400-00 to 93-424 Toner Cartridge Near Empty ........................................................ 2-183
93-425-00, 93-912-00 K Toner Cartridge Life Near End ................................................. 2-183
93-921-00 to 93-935-00 Toner CRUM Data/Comm Fail ................................................. 2-184
93-922-00 to 93-924 Toner Cartridge is Empty.............................................................. 2-184
93-925-00 to 93-932-00 Toner Cartridge Error ............................................................... 2-185
93-938-00 CRUM Validation ........................................................................................... 2-185
93-970-00 to 93-973-00 Toner CRUM Not in Position .................................................... 2-186
94-315-00 BTR Illegal Output ......................................................................................... 2-186
94-419-00 to 94-424-00 BTR (IBT) Life End ................................................................... 2-187
94-910-00 BTR (IBT) Unit Not in Position ....................................................................... 2-187
95-000-00 to 95-255-00 Upgrade Failure........................................................................ 2-188
95-300-00 to 95-302-00 Upgrade Failure: Incompatible Product .................................... 2-189
95-303-00, 95-304-00 Upgrade Failure: Downgrade / Sidegrade ................................... 2-190
95-305-00 Upgrade Failure: Platform Sync..................................................................... 2-190

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
2-4 Xerox WorkCentre 6655 Color Multifunction Printer
02-302-00, 02-306-00, 02-308-00 Flash Failure 02-312-00 Application Checksum Failure
02-302-00 Flash rewrite failure 02-312-00 Application checksum failure

02-306-00 Flash erase failure Procedure

02-308-00 Flash download failure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Procedure not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
WARNING Cycle system power. The error persists.
Ensure that the electricity to the machine is switched off while performing tasks that do Y N
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Perform [[SCP 6]] Final Actions.
Moving parts can cause injury.
Cycle system power. The error persists. Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-5 02-302-00, 02-306-00, 02-308-00, 02-312-00
02-315-00 Service Registry Bad Data 02-316-00, 02-317-00 SRS Error
02-315-00 Service registry bad or corrupted data 02-316-00 SRS returns to LUI invalid fields, invalid data or missing data.

NOTE: The status code 16-503 is raised with this fault code. 02-317-00 LUI gets no response from SRS.

Procedure NOTE: The status code 16-503 is raised with these fault codes.
WARNING
Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. WARNING
Moving parts can cause injury. Ensure that the electricity to the machine is switched off while performing tasks that do
Cycle system power. The error persists. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Y N Moving parts can cause injury.
Perform SCP 6 Final Actions. Cycle system power. The error persists.
Y N
Perform GP 9 to reload system software. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
02-315-00, 02-316-00, 02-317-00 2-6 Xerox WorkCentre 6655 Color Multifunction Printer
02-320-00 Data Time Out Error 02-321-00 XEIP Browser Does Not Respond or is Dead
02-320-00 Control Panel does not receive requested data from the CCM within the specified 02-321-00 XEIP browser does not respond or is dead
time limit.
NOTE: Status code 02-521 is raised with this fault code.
NOTE: Status code 02-520 is raised with this fault code.
Procedure
Procedure WARNING
WARNING Ensure that the electricity to the machine is switched off while performing tasks that do
Ensure that the electricity to the machine is switched off while performing tasks that do not need electricity. Disconnect the power cord. Electricity can cause death or injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Moving parts can cause injury.
Moving parts can cause injury. Cycle system power. The error persists.
Cycle system power. The error persists. Y N
Y N Perform SCP 6 Final Actions.
Perform SCP 6 Final Actions.
Perform GP 9 to reload system software.
Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-7 02-320-00, 02-321-00
02-380-00, 02-381-00 UI Communication Fault 02-390-00 Configurable Services Not Stable
02-380-00 Communication via H-H USB net path connection between network controller and 02-390-00 During power up, not all configurable services achieved a stable state after 5 min-
Control Panel is not working. Status code 02-501 is raised with this fault code. utes. Status code 02-590 is raised with this fault code.

02-381-00 Communication via USB connection between CC and Control Panel is not working. Procedure
Status code 02-502 is raised with this fault code.
WARNING
Procedure Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
WARNING Moving parts can cause injury.
Ensure that the electricity to the machine is switched off while performing tasks that do Cycle system power. The error persists.
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Y N
Moving parts can cause injury. Perform SCP 6 Final Actions.
CAUTION
Before a new Control Panel is installed, identify the machine software level. Check the compat- Perform GP 9 to reload system software.
ibility of the software on the new user interface assembly. Install the software to meet the cus-
tomer machine requirements.
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions

Check connections between the IP Board and Control Panel,REP 1.2.1. The connections
are secure.
Y N
Secure the connections.

Install new components as necessary:

• Control Panel, REP 1.2.1
• IP Board, REP 18.2.6

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
02-380-00, 02-381-00, 02-390-00 2-8 Xerox WorkCentre 6655 Color Multifunction Printer
03-301-00 Engine Serial Number Failure 03-302-00 Engine XPC Failure
03-301-00 Engine serial number is found faulty during a check 03-302-00 Engine XPC failure has occurred

Printing is inhibited. Printing is inhibited.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Power Off/On the printer. The error persists. Power Off/On the printer. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Check serial number, GP 1 Replace MCU Board, REP 18.1.11.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-9 03-301-00 , 03-302-00
03-303-00 Engine Data Error 03-306-00 Upgrade Request Failed - Downgrade Not
03-303-00 Engine board has failed Allowed
03-306-00 Downgrade of system software not allowed
Printing is inhibited.
The reload process is aborted and the printer resets. If configured, an email alert is sent and
Procedure upgrade report printed. An entry is made in Upgrade History log.
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Procedure
not need electricity. Disconnect the power cord. Electricity can cause death or injury. WARNING
Moving parts can cause injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Power Off/On the printer. The error persists. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Y N Moving parts can cause injury.
Perform SCP 6 Final Actions.
Obtain a current system software set, then perform GP 9 to reload system software. The error
persists.
Replace MCU Board, REP 18.1.11.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
03-303-00 , 03-306-00 2-10 Xerox WorkCentre 6655 Color Multifunction Printer
03-307-00 Sync Failure. Unable to Enter SW Upgrade
03-307-00 Software upgrade synchronization failure

The reload process does not start and the printer resets. If configured, an email alert is sent
and upgrade report printed. An entry is made in Upgrade History log.

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Obtain a current system software set, then perform GP 9 to reload system software. The error
persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-11 03-307-00
03-316-00 Communication Fault 03-317-00, 03-318-00, 03-319-00 IOT NVM Error
03-316-00 CCM cannot communicate with IOT. Communications have failed. An automatic 03-317-00 Error saving critical IOT NVM
reset is initiated 1 time. Status codes 03-561 and 03-505 are raised with this fault code.
Initial Actions 03-318-00 Error initializing IOT NVM

• If the fault occurs during a software upgrade, wait 15 minutes for the software program- 03-319-00 Error restoring critical IOT NVM
ming operation to complete, before performing the next action.
• Check the fault history file for other 03-xxx fault codes. If the 03-xxx fault codes occur ran- Procedure
domly, the cause may be electrical noise.
WARNING
Procedure Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
WARNING Moving parts can cause injury.
Ensure that the electricity to the machine is switched off while performing tasks that do Obtain a current system software set, then perform GP 9 to reload system software. The error
not need electricity. Disconnect the power cord. Electricity can cause death or injury. persists.
Moving parts can cause injury. Y N
Cycle system power. The error persists. Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions. Perform GP 9 to reload system software. The error persists.
Y N
Check connections between the IIT and IOT at the IP, IIT Control, and MCU Boards. The con- Perform SCP 6 Final Actions.
nections are secure.
Y N Install new components as necessary:
Secure the connections. • IP Board, REP 18.2.6
• MCU Board, REP 18.1.11
Perform GP 9 to reload system software. The error persists.
Y N
Perform SCP 6 Final Actions.

Install new components as necessary:

• IP Board, REP REP 18.2.6
• IIT Control Board, REP 18.2.2
• MCU Board, REP 18.1.11

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
03-316-00, 03-317-00, 03-318-00, 03-319-00 2-12 Xerox WorkCentre 6655 Color Multifunction Printer
03-320-00 Upgrade Failed - Incompatible Product Type 03-324-00 File Transfer Failure During SW Upgrade
03-320-00 Incompatible Product Type 03-324-00 SW Upgrade File Transfer Failure

Software upgrade aborted due to incompatible product type. System software set does not Software upgrade aborted due to file transfer failure. The upgrade process is aborted and the
match the product hardware. printer resets. If configured, an email alert is sent and upgrade report printed. An entry is made
in Upgrade History log.
Procedure
WARNING Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do WARNING
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Ensure that the electricity to the machine is switched off while performing tasks that do
Moving parts can cause injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Check the version number installed and obtain the correct system software set. Perform GP 9 Moving parts can cause injury.
to reload system software. The error persists. Download a new system software set for the product, then perform GP 9 to reload system soft-
Y N ware. The error persists.
Perform SCP 6 Final Actions. Y N
Perform SCP 6 Final Actions.
Retry system software reload. The error persists.
Y N Retry the system software reload from a different USB port. The error persists.
Perform SCP 6 Final Actions. Y N
Perform SCP 6 Final Actions.
Install new components as necessary:
• IP Board, REP 18.2.6 Install new components as necessary:
• IIT Control Board, REP 18.2.2 • IP Board, REP 18.2.6
• MCU Board, REP 18.1.11 • MCU Board, REP 18.1.11

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-13 03-320-00, 03-324-00
03-325-00 Wall Clock Fault 03-326-00 Upgrade Failed - Version Same as Machine
03-325-00 System clock did not increment within the specified time limit. The operating system 03-320-00 Upgrade is not required
detected the system clock failed to increment within 1.5 seconds during power on. Status code
03-505 is raised with this fault code. Software upgrade is not required, identical system software set is already on the printer. The
upgrade process is aborted and the printer resets. If configured, an email alert is sent and
NOTE: The machine may continue to boot with this fault, but printing may be disabled. upgrade report printed. An entry is made in Upgrade History log.

Initial Actions Procedure

WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Moving parts can cause injury.
Check the fault history file for other 03-xxx fault codes. If the 03-xxx fault codes occur ran-
Obtain a different system software set, then perform GP 9 to reload system software. The
domly, the cause may be electrical noise.
error persists.
Y N
Procedure Perform SCP 6 Final Actions.
Cycle system power. The error persists.
Y N Perform GP 9 to reload system software.
Perform SCP 6 Final Actions

Perform GP 9 to reload system software. The error persists.

Y N
Perform SCP 6 Final Actions

Check the battery installation on the IP Board. The error persists.

Y N
Perform SCP 6 Final Actions

Install new components as necessary:

• IP Board, REP 18.2.6

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
03-325-00, 03-326-00 2-14 Xerox WorkCentre 6655 Color Multifunction Printer
03-327-00 SW Upgrade Failed 03-329-00 Upgrade Request Failed due to Active
03-327-00 Upgrade failure Diagnostics
03-329-00 Upgrade failure due to active diagnostics
Software upgrade has failed. The upgrade process is aborted and the printer resets. If config-
ured and possible, an email alert is sent and upgrade report printed. An entry is made in Software upgrade request during active diagnostics. The upgrade process is aborted and the
Upgrade History log. printer resets. If configured, an email alert is sent and upgrade report printed. An entry is made
in Upgrade History log.
Procedure
WARNING Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do WARNING
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Obtain a current system software set, then perform GP 9 to reload system software. The error Moving parts can cause injury.
persists. Perform GP 9 to reload system software. The error persists.
Y N
Y N
Perform SCP 6 Final Actions.
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-15 03-327-00, 03-329-00
03-330-00 Upgrade Failed Security Feature Active 03-331-00, 03-332-00 Communication Fault with NC
03-329-00 Upgrade failure due to active security feature 03-331-00 Main controller board cannot communicate with network controller. Status code 03-
563 is raised with this fault code.
Software upgrade request during while a security feature is active. The upgrade process is
aborted and the printer resets. If configured, an email alert is sent and upgrade report printed. 03-332-00 Unable to reestablish communications with the network controller after 12 minutes.
An entry is made in Upgrade History log. Status code 03-518 is raised with this fault code.

Procedure Initial Actions

WARNING Check fault history for other 03-xxx fault codes. If 03-xxx fault codes occur randomly, the cause
may be electrical noise.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Procedure
Perform GP 9 to reload system software. The error persists. WARNING
Y N
Ensure that the electricity to the machine is switched off while performing tasks that do
Perform SCP 6 Final Actions.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Perform GP 9 to reload system software.
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. The error persists.

Y N
Perform SCP 6 Final Actions.

Install new components as necessary:

• IP Board, REP 18.2.6

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
03-330-00, 03-331-00, 03-332-00 2-16 Xerox WorkCentre 6655 Color Multifunction Printer
03-338-00 CCM Reset 03-346-00, 03-347-00 Communication Fault with UI
03-338-00 The main controller on CCM reset because either the watch dog timer timed out or 03-346-00 Unable to reestablish communication with the Control Panel after 30 seconds. Sta-
because the application SW wrote to an illegal address. tus code 03-520 is raised with the fault code.

Initial Actions 03-347-00 IP Board cannot communicate with the Control Panel. Continue to attempt to estab-
lish communication for 30 seconds. Status code 03-521 is raised with the fault code.
Check fault history for other 03-xxx fault codes. If 03-xxx fault codes occur randomly, the cause
may be electrical noise.
NOTE: Network printing remains operational.

Procedure Initial Actions

WARNING Check fault history for other 03-xxx fault codes. If 03-xxx fault codes occur randomly, the cause
Ensure that the electricity to the machine is switched off while performing tasks that do may be electrical noise.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Procedure
Cycle system power. The error persists. WARNING
Y N
Ensure that the electricity to the machine is switched off while performing tasks that do
Perform SCP 6 Final Actions
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Perform GP 9 to reload system software. The error persists.
Cycle system power. The error persists.
Y N
Y N
Perform SCP 6 Final Actions
Perform SCP 6 Final Actions
Install new components as necessary:
• IP Board, REP 18.2.6. Perform GP 9 to reload system software. The error persists.
Y N
Perform SCP 6 Final Actions

Install new components as necessary:

• IP Board, REP 18.2.6.
• Control Panel, REP 1.2.1.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-17 03-338-00, 03-346-00, 03-347-00
03-355-00 CCM POST Failure 03-380-00 POST Boot Failure
03-338-00 CCM POST failure. NVM battery may be dead. 03-380-00 Distribution PWBA is missing or disconnected. POST boot failure. Prevent run and
all marking functions. Fault assumes no Control Panel communications.
Initial Actions
Check SD Card and IP Board battery installation. NOTE: PWS communication for diagnostic purposes available.

Initial Actions
Procedure Check fault history for other 03-xxx fault codes. If 03-xxx fault codes occur randomly, the cause
WARNING may be electrical noise.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Procedure
Moving parts can cause injury. WARNING
Cycle system power. The error persists.
Ensure that the electricity to the machine is switched off while performing tasks that do
Y N
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Perform SCP 6 Final Actions
Moving parts can cause injury.
Cycle system power. The error persists.
Install new components as necessary:
Y N
• IP Board, REP 18.2.6.
Perform SCP 6 Final Actions

Perform GP 9 to reload system software. The error persists.

Y N
Perform SCP 6 Final Actions

Install new components as necessary:

• IP Board, REP 18.2.6.
• Control Panel, REP 1.2.1.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
03-355-00, 03-380-00 2-18 Xerox WorkCentre 6655 Color Multifunction Printer
03-390-00 Upgrade Automation Failed 03-397-00 System Configuration Error
03-390-00 Automatic upgrade process failure. 03-390-00 System Configuration Error

Initial Actions Initial Actions

Check fault history for other 03-xxx fault codes. If 03-xxx fault codes occur randomly, the cause Check fault history for other 03-xxx fault codes. If 03-xxx fault codes occur randomly, the cause
may be electrical noise. may be electrical noise.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions Perform SCP 6 Final Actions

Perform GP 9 to reload system software. The error persists. Perform GP 9 to reload system software. The error persists.
Y N Y N
Perform SCP 6 Final Actions Perform SCP 6 Final Actions

Install new components as necessary: Install new components as necessary:

• IP Board, REP 18.2.6. • SD Card, REP 18.2.10.
• Control Panel, REP 1.2.1 . • IP Board, REP 18.2.6.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-19 03-390-00, 03-397-00
03-398-00 SIM Card Serial Number Mismatch 03-399-00 SIM Card Data Cannot be Processed
03-398-00 SIM card serial number did not match the serial number contained in system CCS 03-399-00 Unable to establish communications with the SIM Card. Status code 22-560 is
NVM. Status code 22-559 is raised with this fault code. raised with this fault code.

NOTE: Printing is disabled by this fault. NOTE: Printing is disabled by this fault.

Initial Actions Initial Actions

Check fault history for other 03-xxx fault codes. If 03-xxx fault codes occur randomly, the cause Check fault history for other 03-xxx fault codes. If 03-xxx fault codes occur randomly, the cause
may be electrical noise. may be electrical noise.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions Perform SCP 6 Final Actions

Perform GP 9 to reload system software. The error persists. Perform GP 9 to reload system software. The error persists.
Y N Y N
Perform SCP 6 Final Actions Perform SCP 6 Final Actions

Install new components as necessary: Install new components as necessary:

• SD Card, REP 18.2.10 • SD Card, REP 18.2.10
• IP Board, REP 18.2.6. • IP Board, REP 18.2.6.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
03-398-00, 03-399-00 2-20 Xerox WorkCentre 6655 Color Multifunction Printer
03-401-00, 03-403-00 FAX Not Detected 03-417-00 Incompatible FAX Software Detected
03-401-00 Basic FAX not detected/confirmed. Status code 03-547 is raised with this fault code. 03-417-00 FAX software version supplied at power up is not compatible with the CCM. Status
code 03-546 is raised with this fault code.
03-403-00 Extended FAX not detected/confirmed. Status code 03-548 is raised with this fault
code. Initial Actions
Check fault history for other 03-xxx fault codes. If 03-xxx fault codes occur randomly, the cause
Initial Actions may be electrical noise.
Check fault history for other 03-xxx fault codes. If 03-xxx fault codes occur randomly, the cause
may be electrical noise. Procedure
WARNING
Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do
WARNING not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Perform GP 9 to reload system software. The error persists.
Moving parts can cause injury. Y N
Check FAX Board connections. The error persists. Perform SCP 6 Final Actions
Y N
Perform SCP 6 Final Actions Install new components as necessary:
• FAX Board, REP 18.2.11.
Cycle system power. The error persists. • IP Board, REP 18.2.6.
Y N
Perform SCP 6 Final Actions

Perform GP 9 to reload system software. The error persists.

Y N
Perform SCP 6 Final Actions

Install new components as necessary:

• FAX Board, REP 18.2.11.
• IP Board, REP 18.2.6.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-21 03-401-00, 03-403-00, 03-417-00
03-777-00 Power Loss Detected 03-788-00 Failed to Exit Power Save Mode
03-777-00 The printer detected an AC power loss. 03-788-00 Failed to exit power save mode

Initial Actions NOTE: Status code 03-598 is raised with this fault code.
• Connect the printer directly to a dedicated AC outlet. Procedure
• Check fault history for other 03-xxx fault codes. If 03-xxx fault codes occur randomly, the
cause may be electrical noise.
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Procedure Moving parts can cause injury.
WARNING Cycle system power. The error persists.
Ensure that the electricity to the machine is switched off while performing tasks that do Y N
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Perform SCP 6 Final Actions
Moving parts can cause injury.
Check AC Inlet connections. The error persists. Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions

Install new components as necessary:

• AC Inlet Harness, REP 18.3.99.
• IP Board, REP 18.2.6.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
03-777-00, 03-788-00 2-22 Xerox WorkCentre 6655 Color Multifunction Printer
03-790-00 Time Zone Overridden to GMT: DST Disabled
03-790-00 Time Zone overridden to GMT: DST Disabled. Contact the system admin to reset.

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-23 03-790-00
Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
03-790-00 2-24 Xerox WorkCentre 6655 Color Multifunction Printer
05-110-00 DADF Pickup Jam 05-112-00 DADF Jam During Rotation of Document
05-110-00 DADF pick-up jam. DADF registration sensor does not detect the media leading 05-112-00 DADF Jam during rotation of document. DADF registration sensor does not detect
edge in the specified time from feed start. the media leading edge in the specified time from feed start.

Initial Actions Initial Actions

• Remove all documents from the DADF. • Remove all documents from the DADF.
• Make sure that the customer is not using damaged documents. • Make sure that the customer is not using damaged documents.
• Clean the DADF Registration Sensor, Feed Roller, and surrounding area. • Clean the DADF Registration Sensor, Feed Roller, and surrounding area.
• Check that the Pick-up Assembly is installed correctly, refer to REP 51.1.97. • Check that the Pick-up Assembly is installed correctly, refer to REP 51.1.97.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.

NOTE: To access the DADF registration sensor, remove the DADF Top Cover, REP 51.1.98. NOTE: To access the DADF registration sensor, remove the DADF Top Cover, REP 51.1.98.

Open the DADF Top Cover and clean the area surrounding the DADF Pick-up Assembly. The Open the DADF Top Cover and clean the area surrounding the DADF Pick-up Assembly. The
error persists. error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Clean or replace the DADF Pick-up Assembly, REP 51.1.97. The error persists. Clean or replace the DADF Pick-up Assembly, REP 51.1.97. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Install new components as necessary: Install new components as necessary:

• DADF Pick-up Assembly, REP 51.1.97 • DADF Pick-up Assembly, REP 51.1.97
• DADF Assembly, REP 51.1.1 • DADF Assembly, REP 51.1.1
• IIT MCU Board, REP 18.2.2 • IIT MCU Board, REP 18.2.2

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-25 05-110-00, 05-112-00
05-121-00 CVT-DADF Feed Sensor On Jam 05-305-00 DADF Cover Open
05-121-00 The feed sensor is not turned on in the time specified. In Duplex mode, the feed 05-305-00 The Document Feeder Top Cover is open during a scan.
sensor is not turned on after a specified time.
NOTE: The Document Feeder operation is stopped.
Initial Actions
Initial Actions
• Remove all documents from the DADF.
Remove any media in Document Feeder paper path.
• Make sure that the customer is not using damaged documents.
• Clean the DADF Registration Sensor, Feed Roller, and surrounding area.
Procedure
• Check that the Pick-up Assembly is installed correctly, refer to REP 51.1.97.
WARNING
Procedure Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
WARNING Moving parts can cause injury.
Ensure that the electricity to the machine is switched off while performing tasks that do Check the DADF cover. The DADF cover is closed properly.
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Y N
Moving parts can cause injury. Close the DADF cover.
NOTE: To access the DADF registration sensor, remove the DADF Top Cover, REP 51.1.98.
Check the connection between the DADF Assembly and the IP Board (P/J1502). The con-
Open the DADF Top Cover and clean the area surrounding the DADF Pick-up Assembly. The nection is good.
error persists. Y N
Y N Reattach the connection securely.
Perform SCP 6 Final Actions.
Replace the DADF Assembly. The error persists.
Clean or replace the DADF Pick-up Assembly, REP 51.1.97. The error persists. Y N
Y N Perform SCP 6 Final Actions.
Perform SCP 6 Final Actions.
Replace the IP Board, REP 18.2.6.
Install new components as necessary:
• DADF Pick-up Assembly, REP 51.1.97
• DADF Assembly, REP 51.1.1
• IIT MCU Board, REP 18.2.2

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
05-121-00, 05-305-00 2-26 Xerox WorkCentre 6655 Color Multifunction Printer
05-900-00 ADF Sensor Static Jam 05-940-00 DADF No Original Fail
05-900-00 The DADF Top Cover interlock switch is opened during DADF operation. Paper 05-940-00 Original has been removed. Status code 05-525 is raised with this fault code.
remains in paper path after cover is closed.
Initial Actions
Initial Actions • Remove all documents from the DADF.
• Remove all documents from the DADF. • Clean the DADF registration sensor and surrounding area.
• Make sure that the Top Cover closes correctly. • Check that the Pick-up Assembly is installed correctly, REP 51.1.97.
• Check the switch actuator on the DADF Top Cover. If the actuator is damaged, install a
new DADF Top Cover, REP 51.1.98. Procedure
WARNING
Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do
WARNING not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. NOTE: To access the DADF registration sensor, remove the DADF Top Cover, REP 51.1.98.

Check the DADF Top Cover properly actuates the interlock switch. The error persists. Open the DADF Top Cover and clean the area surrounding the DADF Pick-up Assembly. The
Y N error persists.
Perform SCP 6 Final Actions. Y N
Perform SCP 6 Final Actions.
Replace the DADF Assembly, REP 51.1.1.
Clean or replace the DADF Pick-up Assembly, REP 51.1.97. The error persists.
Y N
Perform SCP 6 Final Actions.

Install new components as necessary:

• DADF Pick-up Assembly, REP 51.1.97
• DADF Assembly, REP 51.1.1
• IIT MCU Board, REP 18.2.2

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-27 05-900-00, 05-940-00
05-941-00 DADF Not Enough Document
05-941-00 The number of original sheets fails after all originals are returned. Status code 22-
503-05 is raised with this fault code.

Initial Actions
• Remove all documents from the DADF.
• Clean the DADF registration sensor and surrounding area.
• Check that the Pick-up Assembly is installed correctly, REP 51.1.97.

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.

NOTE: To access the DADF registration sensor, remove the DADF Top Cover, REP 51.1.98.

Open the DADF Top Cover and clean the area surrounding the DADF Pick-up Assembly. The
error persists.
Y N
Perform SCP 6 Final Actions.

Clean or replace the DADF Pick-up Assembly, REP 51.1.97. The error persists.
Y N
Perform SCP 6 Final Actions.

Install new components as necessary:

• DADF Pick-up Assembly, REP 51.1.97
• DADF Assembly, REP 51.1.1
• IIT MCU Board, REP 18.2.2

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
05-941-00 2-28 Xerox WorkCentre 6655 Color Multifunction Printer
10-311-00 to 10-376-00 Fuser Thermal Error NOTE: Status codes 03-561 and 10-527 are raised with this fault code.

10-311-00 Center STS sensor burnout detection Procedure

10-313-00 AD detection output table outside
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
10-314-00 Fuser compensation sensor is disconnected supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
10-315-00 Fuser NC Comp Fail WARNING
Do not touch the Fuser while it is hot.
10-321-00 Hard Relay OFF
NOTE:
10-326-00 Cool Down Timeout
• These errors often are intermittent. Check Fault History for any of the listed fault codes
showing multiple occurrences. Replace the fuser even if a power cycle clears the error.
10-328-00 Warming up - timeout
• A fuser used only for troubleshooting purposes will blow the first-time-use fuse at power-
10-334-00 STS center-side sensor failure on. Though the fuser is still new, it can no longer reset an end-of-life message when
installed a second time.
10-335-00 STS side-center sensor failure Cycle the system power. The error persists.
Y N
10-336-00 Fuser Comp Failure Perform SCP 6 Final Actions.

10-337-00 Heat Roll Paper twine Error Replace the Fuser, REP 7.1.1. The error persists.
Y N
10-338-00 Main lamp ON consecutive errors Perform SCP 6 Final Actions.

10-372-00 Center STS High-temperature anomaly Check the Fuser and drawer connector for proper installation without bent pins, or foreign
objects. The installation is good.
10-373-00 Side STS Disconnection abnormality Y N
Correct installation problems, reassemble and perform SCP 6 Final Actions.
10-374-00 Side STS High-temperature anomaly
Check the connection between the Fuser Assembly and the MCU Board, and the connection
10-375-00 Center STS Low-temperature anomaly between the Fuser Assembly and the LVPS. The connections are good.
Y N
10-376-00 Side STS Low-temperature anomaly Reattach the connections securely.

Check the connections between the LVPS and the MCU Board. The connections are good.
Y N
Reattach the connections securely.

Check the continuity of the cables in the Heater Harness Assembly. The continuity is good.
Y N
Replace the Heater Harness Assembly.

Check the continuity of the cables in the Top Harness Assembly. The continuity is good.
Y N
Replace the Top Harness Assembly.

Verify the Fuser power is about +5 VDC by measuring the voltage between the MCU Board
ground and the P/J28 pin 2. The voltage is correct.
Y N
Refer to OF 19 +5 VDC Power.
A
Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-29 10-311-00 to 10-376-00
A
Replace the LVPS. The error persists. 10-317-00, 10-902-00 Fuser Failure, or Missing
Y N
10-317-00 Fuser detached
Perform SCP 6 Final Actions.

10-902-00 Fuser missing. Status code 09-639 is raised with this fault code
Replace the MCU Board, REP 18.1.11.

Procedure
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
Do not touch the Fuser while it is hot.
Cycle the system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Check the Fuser life count. Fuser life count is good (not at or near end of life).
Y N
Replace the Fuser, REP 7.1.1.

Check the Fuser and drawer connector for proper installation without bent pins, or foreign
objects. The installation is good.
Y N
Correct installation problems, reassemble and perform SCP 6 Final Actions.

Check the connection between the Fuser Assembly and the MCU Board, and the connection
between the Fuser Assembly and the LVPS. The connections are good.
Y N
Reattach the connections securely.

Check the connections between the LVPS and the MCU Board. The connections are good.
Y N
Reattach the connections securely.

Check the continuity of the cables in the Heater Harness Assembly. The continuity is good.
Y N
Replace the Heater Harness Assembly.

Check the continuity of the cables in the Top Harness Assembly. The continuity is good.
Y N
Replace the Top Harness Assembly.

Verify the Fuser power is about +5 VDC by measuring the voltage between the MCU Board
ground and the P/J28 pin 2. The voltage is correct.
Y N
Refer to OF 19 +5 VDC Power.

Replace the Fuser Assembly. The error persists.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
10-311-00 to 10-376-00, 10-317-00, 10-902-00 2-30 Xerox WorkCentre 6655 Color Multifunction Printer
Y N 10-319-00 Fuser Differential Amp Fail
Perform SCP 6 Final Actions.
10-319-00 Differential amplifier circuit failure.
Replace the LVPS. The error persists.
NOTE: Status codes 03-561 and 10-527 are raised with this fault code.
Y N
Perform SCP 6 Final Actions. Procedure
Replace the MCU Board, REP 18.1.11. WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
Do not touch the Fuser while it is hot.
After clearing NVM, and differential amplification error detection history, cycle system power.
Verify the following possible causes: NC sensor amplification circuit of main board is defective
(IC breakage, Short-circuit of I/O line?. The error persists.
Y N
Go to SCP 6 and complete the Final Actions.

Replace the Fuser, REP 7.1.1.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-31 10-317-00, 10-902-00 , 10-319-00
10-329-00 Fuse Cut Error 10-420-00, 10-421-00 Fuser End of Life
10-329-00 Fuser fuse cut failure. 10-420-00 Fuser Assy Near Life. Status code 10-524 is raised with this fault code.

NOTE: Status codes 03-561 and 10-527 are raised with this fault code. 10-421-00 Fuser Assy Life End. Status code 10-523 is raised with this fault code.

Procedure Procedure
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
injury. Moving parts can cause injury.
WARNING WARNING
Do not touch the Fuser while it is hot.
Do not touch the Fuser while it is hot.
Cycle system power. The error persists.
Check the Fuser life count. Fuser life count is at or near end of life.
Y N
Y N
Perform SCP 6 Final Actions.
Cycle system power. The error message is displayed.
Y N
Replace the Fuser, REP 7.1.1.
Reassemble and perform SCP 6 Final Actions.

Reset the Fuser life count in the diagnostic menu.

Replace the Fuser, REP 7.1.1.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
10-329-00, 10-420-00, 10-421-00 2-32 Xerox WorkCentre 6655 Color Multifunction Printer
10-903-00 Main Error updating data 12-930-00 Exit Tray Full
10-903-00 Fusing failure, main error updating data 12-930-00 Exit Tray Full

NOTE: Status codes 03-561 and 10-527 are raised with this fault code. NOTE: Status code 12-730 is raised with this fault code.

Procedure Initial Actions

WARNING • Empty the output tray.
Switch off the electricity to the machine. Disconnect the power cord from the customer • Check the full stack actuator for damage or obstructed movement.
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. Procedure
WARNING WARNING
Do not touch the Fuser while it is hot. Switch off the electricity to the machine. Disconnect the power cord from the customer
Cycle system power. The error persists. supply while performing tasks that do not need electricity. Electricity can cause death or
Y N injury. Moving parts can cause injury.
Go to SCP 6 and complete the Final Actions. WARNING
Do not touch the Fuser while it is hot.
Replace the Fuser, REP 7.1.1.
Cycle system power. The error persists.
Y N
Go to SCP 6 and complete the Final Actions.

Use dC330 code 071-105 to check Full Stack Sensor operation. The sensor signal changes.
Y N
Remove the Exit Chute Assembly to check the condition of the sensor, actuator, and har-
ness. The sensor is connected and the harness undamaged.
Y N
Replace the Full Stack Sensor or repair the harness. If the actuator is damaged,
replace the Exit Assembly.

Replace the MCU Board, REP 18.1.11.

Replace these components in order until the error is corrected.

1. Exit Assembly, REP 17.1.1
2. MCU Board, REP 18.1.11

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-33 10-903-00 , 12-930-00
Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
10-903-00 , 12-930-00 2-34 Xerox WorkCentre 6655 Color Multifunction Printer
16A Network Error Entry 16B FTP or SMB Unable to Connect to Remote Server
Use this RAP when the customer reports network failures. e.g. Cannot connect to the scan The printer cannot connect, find or login to the scan server.
server when using FTP or SMB protocols, or when a folder on the scan server cannot be
opened. Procedure
NOTE: The fault message appears on the confirmation report. The report may take several NOTE: The FTP/SMB protocol is followed by a colon and port number, :21 for FTP and :139
minutes to print after scanning the document. for SMB.

Initial Actions Scan the document using the default template and one other template. The fault is present
on both templates.
Consult your manager before troubleshooting the customer’s network, as the policy varies
Y N
according to region.
The failed template is incorrectly configured. Ask the customer or system administrator to
verify the settings of the web template that failed, including the login password.
Procedure
Ask the customer to open the printer’s CWIS page. The printer’s CWIS page opens.
NOTE: If it is possible to log into CWIS by entering the printer’s IP address, then the network
Y N
controller on the IP Board is good.
Look at the front of the Configuration report. Make sure HTTP is enabled and set to port
Perform the following: 80. The settings are correct.
Y N
1. Check that the printer date and time are correctly set, refer to GP 31.
Enable HTTP and set the port to 80. Restart this RAP from the beginning. If this path
2. Print a configuration report.
has been followed previously, escalate the fault to the system administrator. If the
3. Check that confirmation report printing is enabled. If necessary, ask the customer to customer does not have a system administrator, they should contact the Customer
enable printing of the confirmation report. Support Center or request a Xerox analyst troubleshoot their network which is sub-
4. Ensure that the printer is configured for scan to file: ject to a charge.
a. Check the back of the configuration report under the heading Workflow Scanning.
b. If a IP address or name is not listed next to Alt1 Repository Protocol, ask the cus- Disconnect the network cable from the printer. Make sure the PWS network adaptor set-
tomer to configure the machine before continuing. tings are set to Auto. Use a crossover cable to connect the PWS to the printer. Either
the two LEDs on the IP Board or PWS are lit, indicating a connection.
5. Go to the relevant procedure:
Y N
• 16B FTP or SMB Unable to Connect to Remote Server RAP. Perform the following:
• 16C Remote Directory Lock Failed RAP. 1. Change the network speed setting of the machine.
2. If the LEDs light, use the new network speed setting. Inform the customer that
the network speed has been changed then follow the Yes path from this step.
3. If the LEDs do not light, install a new IP Board, REP 18.2.6.

Correctly configure the PWS IP address to communicate with the printer, refer to
‘Set a Static IP Address on the PWS” (GP 14). Make sure to disable the PWS firewall.
Ping the printer from the PWS.

NOTE: Re-enable the PWS firewall after completion of this procedure.

The printer responds to the ping request.

Y N
Perform an Altboot, GP 9.

The printer software is up to date.

Y N
Upgrade the software, GP 9. The fault persists.
Y N
Perform SCP 6 Final Actions.

A B C
Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-35 16A, 16B
A B C D E
Perform the “Customers Settings Check” (16B). Customer settings were Y N
changed. Escalate the fault to the system administrator. If the customer does not have a
Y N system administrator, they should contact the Customer Support Center or
Escalate the fault to the system administrator. If the customer does not have a request a Xerox analyst troubleshoot their network which will be subject to a
system administrator, they should contact the Customer Support Center or charge.
request a Xerox analyst troubleshoot their network which will be subject to a
charge. Perform SCP 6 Final Actions.

Retry the job. The job was successful. The customer can ping the default gateway IP address.
Y N Y N
Escalate the fault to the system administrator. If the customer does not have a Escalate the fault to the system administrator. If the customer does not have a sys-
system administrator, they should contact the Customer Support Center or tem administrator, they should contact the Customer Support Center or request a
request a Xerox analyst troubleshoot their network which will be subject to a Xerox analyst troubleshoot their network which will be subject to a charge.
charge.
Perform the “Customers Settings Check” (16B). Customer settings were changed.
Perform SCP 6 Final Actions. Y N
Escalate the fault to the system administrator. If the customer does not have a sys-
Perform the “Customers Settings Check” (16B). Customer settings were changed. tem administrator, they should contact the Customer Support Center or request a
Y N Xerox analyst troubleshoot their network which will be subject to a charge.
Escalate the fault to the system administrator. If the customer does not have a sys-
tem administrator, they should contact the Customer Support Center or request a Retry the job. The job was successful.
Xerox analyst troubleshoot their network which will be subject to a charge. Y N
Escalate the fault to the system administrator. If the customer does not have a sys-
Retry the job. The job was successful. tem administrator, they should contact the Customer Support Center or request a
Y N Xerox analyst troubleshoot their network which will be subject to a charge.
Escalate the fault to the system administrator. If the customer does not have a sys-
tem administrator, they should contact the Customer Support Center or request a Perform SCP 6 Final Actions.
Xerox analyst troubleshoot their network which will be subject to a charge.
Perform the “Customers Settings Check” (16B). Customer settings were changed.
Perform SCP 6 Final Actions. Y N
Escalate the fault to the system administrator. If the customer does not have a system
Ask the customer to ping the scan servers IP address or name. administrator, they should contact the Customer Support Center or request a Xerox ana-
lyst troubleshoot their network which will be subject to a charge.
NOTE: The scan server is the computer the job is being sent to. The scan server’s IP address
or name appears on the confirmation report.
Retry the job. The job was successful.
The customer can ping the scan server. Y N
Y N Escalate the fault to the system administrator. If the customer does not have a system
Check the configuration report for default gateway IP address listed under TCP/IPv6 Set- administrator, they should contact the Customer Support Center or request a Xerox ana-
tings. A default gateway IP address is listed. lyst troubleshoot their network which will be subject to a charge.
Y N
Perform the “Customers Settings Check” (16B). Customer settings were Perform SCP 6 Final Actions.
changed.
Y N Customers Settings Check
Escalate the fault to the system administrator. If the customer does not have a
NOTE: Both the configuration and confirmation reports are required to check the customers
system administrator, they should contact the Customer Support Center or
settings. Corrections must be made through the printer’s CWIS page.
request a Xerox analyst troubleshoot their network which will be subject to a
charge. Check the following with the customer, ask the customer to correct any errors:
1. That the scan server is switched on and online.
Retry the job. The job was successful.
NOTE: The scan server is the computer that the job is being sent.

2. That the scan servers IP address or name is correct.

D E
Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16B 2-36 Xerox WorkCentre 6655 Color Multifunction Printer
3. That the path and user name are correct. 16C Remote Directory Lock Failed
4. (SMB protocol only) That the Share name is correct, referred to as the Volume on the
Use this RAP when the customer reports that the machine has logged onto the scan server,
configuration report.
but cannot create a folder inside of the scan directory. The creation of the scan folder is neces-
5. Check with System Administrator that the correct password has been entered on the sary for the machine to successfully complete the can to file job.
machines CWIS page.
NOTE: The scan server is the computer that the job is being sent.
NOTE: The password is not printed on the configuration or confirmation reports.
Procedure
The machines login name that it is using to log onto the scan server, for this file repository,
does not have sufficient rights. Ask the customer to verify the rights for this user at the scan
server, or escalate the problem to their System Administrator. If the customer does not have a
System Administrator, they should contact the Customer Support Centre or request a Xerox
analyst troubleshoot their network which will be subject to a charge.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-37 16B, 16C
16-000-00 to 16-000-26 Cannot Create RPC With ENS 16-001-09 to 16-001-90 Unable to do Startup
16-000-00 Format Service Non Shutdown NC Faults Synchronization
16-001-09 Unable to do startup synchronization
16-000-01 ENS Service Non Shutdown NC Faults
16-001-14 Unable to do startup synchronization
16-000-09 Cannot create RPC connection with ENS
16-001-19 Unable to do startup synchronization
16-000-14 Cannot create RPC connection with ENS
16-001-26 Unable to Start up and synchronize with SC
16-000-19 Cannot create RPC connection with ENS
16-001-47 Unable to do startup synchronization
16-000-26 Cannot create RPC connection with ENS
16-001-90 Unable to do startup synchronization
NOTE: Status codes 03-518 and 16-502 are raised with these fault codes.

Procedure NOTE: Status codes 03-518 and 16-502 are raised with these fault codes.

WARNING Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do WARNING
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
If a single occurrence, the network controller automatically retries. The error persists. Moving parts can cause injury.
Y N
If a single occurrence, the network controller automatically retries. The error persists.
Perform SCP 6 Final Actions. Y N
Perform SCP 6 Final Actions.
Perform GP 9 to reload system software.
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-000-00 to 16-000-26, 16-001-09 to 16-001-90 2-38 Xerox WorkCentre 6655 Color Multifunction Printer
16-002-09 to 16-002-46 Unable to Register as RPC Server 16-003-09 to 16-003-90 Too Many IPC Handles
16-002-09 Unable to Register as RPC server 16-003-09 Too many IPC Handles

16-002-14 Unable to Register as RPC server 16-003-14 Too many IPC Handles

16-002-19 Unable to Register as an RPC server 16-003-19 Too many IPC Handlers

16-002-26 Could not become an RPC Server 16-003-90 Utility Insert Handler Failure

16-002-46 Unable to Register as an RPC server NOTE: Status codes 03-518 and 16-502 are raised with these fault codes.

NOTE: Status codes 03-518 and 16-502 are raised with these fault codes. Procedure
WARNING
Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do
WARNING not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury. If a single occurrence, the network controller automatically retries. The error persists.
Moving parts can cause injury. Y N
If a single occurrence, the network controller automatically retries. The error persists. Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions. Cycle system power. The error persists.
Y N
Cycle system power. The error persists. Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions. Perform GP 9 to reload system software.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-39 16-002-09 to 16-002-46, 16-003-09 to 16-003-90
16-004-14 to 16-005-92 RPC Failure to Register 16-006-09, 16-006-19 Cannot Register for Events
16-004-14 RPC Connect Failure to NC Registration Service 16-006-09 Cannot register for events

16-004-19 RPC Connect Failure to NC Registration Service 16-006-19 Cannot register for events

16-004-26 RPC Connect Failure to NC Registration Service NOTE: Status codes 03-518 and 16-502 are raised with these fault codes.

16-004-46 RPC Failed to Connect to with NC Service Procedure

WARNING
16-005-14 RPC Call Failure to NC Registration Service
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
16-005-19 RPC Call Failure to NC Registration Service
Moving parts can cause injury.
Cycle system power. The error persists.
16-005-26 RPC Call Failure to NC Registration Service
Y N
Perform SCP 6 Final Actions.
16-005-46 RPC Failed to Register with NC Service

Perform GP 9 to reload system software.

16-005-68 RPC Failed to Register with NC Service

16-005-90 RPC call to NC Registration Failed

16-005-92 RPC Failed to Register with NC Service

NOTE: Status codes 03-518 and 16-502 are raised with these fault codes.

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists.
Y N
Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-004-14 to 16-005-92, 16-006-09, 16-006-19 2-40 Xerox WorkCentre 6655 Color Multifunction Printer
16-007-92 to 16-010-99 Invalid IPC / RPC Data 16-013-14, 16-014-14 Copier Synchronization Error
16-007-92 Invalid RPC Data Received 16-013-14 Digital Copier ENS synchronization error

16-009-09 Invalid IPC Data Received 16-014-14 Digital Copier ENS registration error

16-010-14 Unable to send IPC NOTE: Status codes 03-518 and 16-502 are raised with these fault codes.

16-010-99 Unable to send IPC Procedure

WARNING
Procedure Ensure that the electricity to the machine is switched off while performing tasks that do
WARNING not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Cycle system power. The error persists.
Moving parts can cause injury. Y N
Perform SCP 6 Final Actions.
If a single occurrence, the network controller automatically retries. The error persists.
Y N
Perform GP 9 to reload system software.
Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-41 16-007-92 to 16-010-99, 16-013-14, 16-014-14
16-015-14, 16-015-19 SESS Data Store Variable Not Set 16-016-14, 16-016-19 Data Store Initialization Failed
16-015-14 SESS data store environmental variable not set 16-016-14 Data store initialization failed

16-015-19 SESS data store environmental variable not set 16-016-19 Data store initialization failed

NOTE: Status codes 03-518 and 16-502 are raised with these fault codes. NOTE: Status codes 03-518 and 16-502 are raised with these fault codes.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-015-14, 16-015-19, 16-016-14, 16-016-19 2-42 Xerox WorkCentre 6655 Color Multifunction Printer
16-017-19 to 16-021-26 Send Event Failure / Could Not Get 16-021-46 Unable to Get Host Name
Host Name RAP 16-021-46 Unable to get Host Name
16-017-19 Send Event Failure Unable to send event to NC ENS
NOTE: Status codes 03-518 and 16-502 are raised with this fault code.
16-021-19 NC PM Registration Connect Error Procedure
16-021-26 Service could not get Host Name WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
NOTE: Status codes 03-518 and 16-502 are raised with these fault codes. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Procedure If a single instance occurs, cycle system power. The error persists.
WARNING Y N
Ensure that the electricity to the machine is switched off while performing tasks that do Perform SCP 6 Final Actions.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Perform GP 9 to reload system software.
If a single occurrence, the network controller automatically retries. The error persists.
Y N
Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-43 16-017-19 to 16-021-26, 16-021-46
16-023-09, 16-023-26 RPC Call Failure 16-026-09 to 16-026-92 Memory Allocation Error
16-023-09 RPC Call Failure to ENS 16-026-09 Memory Allocation Failure

16-023-26 RPC Call Failure to ENS 16-026-14 Malloc Error

NOTE: Status codes 03-518 and 16-502 are raised with these fault codes. 16-026-46 Memory Allocation Error

Procedure 16-026-90 Malloc Error

WARNING
16-026-92 Memory Allocation Fault
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
NOTE: Status codes 03-518 and 16-502 are raised with these fault codes.
Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists. Procedure
Y N
Perform SCP 6 Final Actions.
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Cycle system power. The error persists. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Y N Moving parts can cause injury.
Perform SCP 6 Final Actions. If a single occurrence, the network controller automatically retries. The error persists.
Y N
Perform GP 9 to reload system software. Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-023-09, 16-023-26, 16-026-09 to 16-026-92 2-44 Xerox WorkCentre 6655 Color Multifunction Printer
16-027-90 Unable to Obtain Well Known Queue ID 16-028-09, 16-028-90 Unable to Complete RPC Call / Invalid
16-027-90 Unable to obtain well known queue ID Range String
16-028-09 Unable to complete RPC call
NOTE: Status codes 03-518 and 16-502 are raised with this fault code.

Procedure 16-028-90 Invalid Range String

WARNING NOTE: Status codes 03-518 and 16-502 are raised with this fault code.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Procedure
Moving parts can cause injury. WARNING
If a single occurrence, the network controller automatically retries. The error persists. Ensure that the electricity to the machine is switched off while performing tasks that do
Y N not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Perform SCP 6 Final Actions. Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists.
Cycle system power. The error persists.
Y N
Y N
Perform SCP 6 Final Actions.
Perform SCP 6 Final Actions.
Cycle system power. The error persists.
Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-45 16-027-90, 16-028-09, 16-028-90
16-030-19 Unable to Obtain Client RPC Handle 16-031-09 Invalid Event Notification Received
16-030-19 Unable to obtain client RPC handle to EJS 16-031-09 Invalid event notification received

NOTE: Status codes 03-518 and 16-502 are raised with this fault code. NOTE: Status codes 03-518 and 16-502 are raised with this fault code.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists. If a single occurrence, the network controller automatically retries. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-030-19, 16-031-09 2-46 Xerox WorkCentre 6655 Color Multifunction Printer
16-032-19, 16-039-00 NVM Connection Failure / Pthread 16-040-92 Semaphore Fault
Create Error 16-040-92 Semaphore fault
16-032-19 NVM Connection Failure
NOTE: Status codes 03-518 and 16-502 are raised with this fault code.
16-039-00 Pthread Create Error Procedure
NOTE: Status codes 03-518 and 16-502 are raised with these fault codes. WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Procedure not need electricity. Disconnect the power cord. Electricity can cause death or injury.
WARNING Moving parts can cause injury.
Ensure that the electricity to the machine is switched off while performing tasks that do Cycle system power. The error persists.
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Y N
Moving parts can cause injury. Perform SCP 6 Final Actions.
If a single occurrence, the network controller automatically retries. The error persists.
Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-47 16-032-19, 16-039-00, 16-040-92
16-048-09 Unable to Set Binding 16-048-14, 16-048-90 Cannot Set NC Client Binding
16-048-09 Unable to set binding 16-048-14 Cannot set NC client binding

NOTE: Status codes 03-518 and 16-502 are raised with this fault code. 16-048-90 Cannot set NC client binding

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists.
Cycle system power. The error persists.
Y N
Y N
Perform SCP 6 Final Actions.
Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-048-09, 16-048-14, 16-048-90 2-48 Xerox WorkCentre 6655 Color Multifunction Printer
16-048-99 Cannot Set NC Client Binding 16-150-09 Cannot Send Registration Event
16-048-99 Unable to set client binding 16-150-09 Cannot send Registration Event

Procedure NOTE: Status codes 03-518 and 16-502 are raised with this fault code.
WARNING Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do WARNING
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
If a single occurrence, the network controller automatically retries. The error persists.
Moving parts can cause injury.
Y N
Cycle system power. The error persists.
Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions.
Cycle system power. The error persists.
Y N
Perform GP 9 to reload system software.
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-49 16-048-99, 16-150-09
16-150-14 Unable to Obtain RPC Transport 16-150-19 NC Sync Peer Service Fault
16-150-14 Unable to obtain RPC transport 16-150-19 Unable to sync peer infrastructure services. Operating system tries 3 times; If fault
continues, the IP is reset.
NOTE: Status codes 03-518 and 16-502 are raised with this fault code.
Procedure
Procedure
WARNING
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Moving parts can cause injury.
Cycle system power. The error persists.
If a single occurrence, the network controller automatically retries. The error persists.
Y N
Y N
Perform SCP 6 Final Actions.
Perform SCP 6 Final Actions.
Perform GP 9 to reload system software.
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-150-14, 16-150-19 2-50 Xerox WorkCentre 6655 Color Multifunction Printer
16-150-26 Fault Service Failed to Write to Log 16-150-90 Invalid IPC Request Destination
16-150-26 Fault Service Failed to write to log 16-150-90 Invalid IPC request destination

Procedure NOTE: Status codes 03-518 and 16-502 are raised with this fault code.
WARNING Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do WARNING
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Cycle system power. The error persists.
Moving parts can cause injury.
Y N
If a single occurrence, the network controller automatically retries. The error persists.
Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions.
Perform GP 9 to reload system software.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-51 16-150-26, 16-150-90
16-150-92 Consumer Interface Fault 16-151-09 to 16-151-19 Invalid IPC Command / SNMP Reg
16-150-92 Consumer interface fault Failure
16-151-09 Invalid IPC command
NOTE: Status codes 03-518 and 16-502 are raised with this fault code.

Procedure 16-151-14 SNMP event registration failed

WARNING 16-151-19 Invalid IPC command

Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. NOTE: Status codes 03-518 and 16-502 are raised with these fault codes.
Moving parts can cause injury.
Cycle system power. The error persists.
Procedure
Y N WARNING
Perform SCP 6 Final Actions. Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Perform GP 9 to reload system software. Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists.
Y N
Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-150-92, 16-151-09 to 16-151-19 2-52 Xerox WorkCentre 6655 Color Multifunction Printer
16-151-26 Fault Service Failed to Get a Log Handle 16-151-90 Put Environment Variable Failure
16-151-26 Fault service failed to get a log handle 16-151-90 Put environment variable failure

Procedure NOTE: Status codes 03-518 and 16-502 are raised with this fault code.
WARNING Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do WARNING
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Cycle system power. The error persists.
Moving parts can cause injury.
Y N
Cycle system power. The error persists.
Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions.
Perform GP 9 to reload system software.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-53 16-151-26, 16-151-90
16-152-09 Internal IPC Failure 16-152-14 Empty Internal Event Received by ENS
16-152-09 Internal IPC failure 16-152-14 Empty internal event received by ENS

NOTE: Status codes 03-518 and 16-502 are raised with this fault code. NOTE: Status codes 03-518 and 16-502 are raised with this fault code.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists. If a single occurrence, the network controller automatically retries. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-152-09, 16-152-14 2-54 Xerox WorkCentre 6655 Color Multifunction Printer
16-152-19 Unable to Send Request to SESS 16-152-26 Fault Service Could Not Open Fault Log
16-152-19 Unable to send request to SESS 16-152-26 Fault Service could not open Fault Log

NOTE: Status codes 03-518 and 16-502 are raised with this fault code. Procedure
Procedure WARNING
WARNING Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
If a single occurrence, perform GP 9 to reload system software. The error persists.
Moving parts can cause injury.
Y N
If a single occurrence, the network controller automatically retries. The error persists.
Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions.
Check the Hard Drive harness connections. The error persists.
Y N
Cycle system power. The error persists.
Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions.
Install a new Hard Drive, REP 18.2.4.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-55 16-152-19, 16-152-26
16-153-09 Unable to Obtain IPC Queue 16-153-14 Cannot Initialize Internal Event List
16-153-09 Unable to obtain IPC queue 16-153-14 Cannot initialize internal event list

NOTE: Status codes 03-518 and 16-502 are raised with this fault code. Procedure
Procedure WARNING
WARNING Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
If a single occurrence, the network controller automatically retries. The error persists.
Moving parts can cause injury.
Y N
If a single occurrence, the network controller automatically retries. The error persists.
Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions.
Cycle system power. The error persists.
Y N
Cycle system power. The error persists.
Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions.
Perform GP 9 to reload system software.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-153-09, 16-153-14 2-56 Xerox WorkCentre 6655 Color Multifunction Printer
16-153-19 NVM Save Failure 16-154-09 IP Registration Configuration Error
16-153-19 NVM Save Failure 16-154-09 IP Registration service configuration error

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. If a single occurrence, perform GP 9 to reload system software. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. The error persists. Verify system software version, download a new version and install.
Y N
Perform SCP 6 Final Actions

Install new components as necessary

• IP Board, REP 18.2.6

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-57 16-153-19, 16-154-09
16-154-14 Cannot Create Internal Event Queue 16-154-19 NVM Read Failure
16-154-14 Cannot create internal event queue 16-154-19 NVM read failure

Procedure NOTE: Status codes 03-518 and 16-502 are raised with this fault code.
WARNING Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do WARNING
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Cycle system power. The error persists.
Moving parts can cause injury.
Y N
Cycle system power. The error persists.
Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions.
Perform GP 9 to reload system software.

Perform GP 9 to reload system software. The error persists.

Y N
Perform SCP 6 Final Actions

Install new components as necessary

• SD Card, REP 18.2.10
• IP Board, REP 18.2.6

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-154-14, 16-154-19 2-58 Xerox WorkCentre 6655 Color Multifunction Printer
16-155-19 NC Failed to Boot from Alternate Partition 16-156-19 Service Run Loop Failed
16-155-19 NC Failed to Boot from Alternate Disk Partition 16-156-19 Service run loop failed

Procedure NOTE: Status code 16-575 is raised with this fault code.
WARNING Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do WARNING
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Cycle system power. The error persists.
Moving parts can cause injury.
Y N
Cycle system power. The error persists.
Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions.
Perform GP 9 to reload system software.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-59 16-155-19, 16-156-19
16-160-09 NC Registration Service Process Death 16-161-09 to 16-164-09 Cannot Send Reg Event / List
16-160-09 IP Registration Service Process Death Access Failure
16-161-09 Cannot send registration event
NOTE: Status code 16-575 is raised with this fault code.

Procedure NOTE: Status code 16-576 is raised with this fault code.

WARNING 16-162-09 NC Platform Manager Service Process Death

Ensure that the electricity to the machine is switched off while performing tasks that do
NOTE: Status code 16-577 is raised with this fault code.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. 16-163-09 NC DM Agent Service Process Death
If a single occurrence, the network controller automatically retries. The error persists.
Y N NOTE: Status code 16-584 is raised with this fault code.
Perform SCP 6 Final Actions.
16-164-09 List access failure (create, add, find, delete)
Cycle system power. The error persists.
Y N Procedure
Perform SCP 6 Final Actions. WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Check fault history log for possible root cause. This error is a symptom of another problem.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists.
Y N
Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Check fault history log for possible root cause. These errors are symptoms of other problems.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-160-09, 16-161-09 to 16-164-09 2-60 Xerox WorkCentre 6655 Color Multifunction Printer
16-429-00, 16-431-00 Unable to Write to Data Store / Get 16-432-00 Unknown Scheduler Received
System Time 16-432-00 Unknown scheduler received
16-429-00 Unable to write to data store
Procedure
16-431-00 Unable to get system time WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Procedure not need electricity. Disconnect the power cord. Electricity can cause death or injury.
WARNING Moving parts can cause injury.
Ensure that the electricity to the machine is switched off while performing tasks that do Cycle system power. The error persists.
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Y N
Moving parts can cause injury. Perform SCP 6 Final Actions.
Cycle system power. The error persists.
Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-61 16-429-00, 16-431-00, 16-432-00
16-433-00 RPC Call Failed 16-434-00 Unable to Change Scheduler in DM
16-433-00 RPC call failed 16-434-00 Unable to change scheduler received

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Cycle system power. The error persists. Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-433-00, 16-434-00 2-62 Xerox WorkCentre 6655 Color Multifunction Printer
16-600-07 to 16-600-67 Cannot Create RPC Connection 16-601-26 to 16-601-46 Queue Setup / System Control
16-600-07 Cannot create RPC connection to ENS Failed / Invalid UI Info
16-601-26 Fault Service Failed IPC Queue Setup
16-600-35 Cannot create RPC connection to ENS
16-601-35 System control initialization Failed
16-600-46 Cannot create RPC connection to ENS
16-601-46 Invalid UI Information (RPC data) Returned
16-600-66 Unable to create RPC connection to ENS

16-600-67 Unable to create RPC connection to ENS

Procedure
WARNING
Procedure Ensure that the electricity to the machine is switched off while performing tasks that do
WARNING not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
If a single occurrence, the network controller automatically retries. The error persists.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Y N
Perform SCP 6 Final Actions.
If a single occurrence, the network controller automatically retries. The error persists.
Y N
Cycle system power. The error persists.
Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions.
Cycle system power. The error persists.
Y N Perform GP 9 to reload system software.
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-63 16-600-07 to 16-600-67, 16-601-26 to 16-601-46
16-601-47 Diag Service Failed IPC Queue Setup 16-601-66, 16-601-67 Unable to do Start up
16-601-47 Diagnostics service failed IPC queue setup Synchronization
16-601-66 Unable to do start up synchronization
Procedure
WARNING 16-601-67 Unable to do start up synchronization
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Procedure
Moving parts can cause injury. WARNING
Cycle system power. The error persists. Ensure that the electricity to the machine is switched off while performing tasks that do
Y N not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Perform SCP 6 Final Actions. Moving parts can cause injury.
Cycle system power. The error persists.
Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-601-47, 16-601-66, 16-601-67 2-64 Xerox WorkCentre 6655 Color Multifunction Printer
16-601-68 Unable to Start Up and Sync with SC 16-601-105 Unable Synchronize At Start Up
16-601-68 Unable to start up & synchronize with SC 16-601-105 Unable to do start up synchronization

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-65 16-601-68, 16-601-105
16-602-07 to 16-602-105 RPC Service Registration Failure 16-603-11, 16-603-28 Replace Handler Call Failed
16-602-07 RPC Service Registration Failure 16-603-11 Replace Handler call failed

16-602-09 Unable to unregister as RPC service 16-603-28 Replace Handler call failed

16-602-11 RPC Server Registration failed Procedure

16-602-28 RPC Server Registration failed
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
16-602-35 RPC Server Registration not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
16-602-38 RPC Server Registration Failed Cycle system power. The error persists.
Y N
16-602-66 Unable to Register as an RPC Server Perform SCP 6 Final Actions.

16-602-67 Unable to Register as an RPC Server Perform GP 9 to reload system software.

16-602-68 Unable to Register as an RPC Server

16-602-105 Unable to Register as an RPC Server

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists.
Y N
Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-602-07 to 16-602-105, 16-603-11, 16-603-28 2-66 Xerox WorkCentre 6655 Color Multifunction Printer
16-603-46 to 16-603-67 Too Many IPC Handlers 16-603-68 Replace Handler Call Failed
16-603-46 Too many IPC handlers 16-603-68 Replace handler call failed

16-603-66 Too many IPC handlers Procedure

16-603-67 Too many IPC handlers
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Procedure not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
WARNING Cycle system power. The error persists.
Ensure that the electricity to the machine is switched off while performing tasks that do Y N
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Perform SCP 6 Final Actions.
Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists. Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-67 16-603-46 to 16-603-67, 16-603-68
16-603-105, 16-604-14 RPC Call Failure to NC Registration 16-604-38,16-604-99 Could Not Register With Reg Service
Service 16-604-38 Could not register with registration service
16-603-105 RPC call failure to network controller registration service.
16-604-99 Could not register with registration service
16-604-14 RPC call failure to network controller registration service
Procedure
Procedure WARNING
WARNING Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Cycle system power. The error persists.
Y N
If a single occurrence, the network controller automatically retries. The error persists.
Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions.
Perform GP 9 to reload system software.
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-603-105, 16-604-14, 16-604-38,16-604-99 2-68 Xerox WorkCentre 6655 Color Multifunction Printer
16-604-105 SESS Data Store Variable Not Set 16-605-07 Unable to Register with Registration Service
16-604-105 SESS data store environmental variable not set 16-605-07 Unable to register with registration service

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-69 16-604-105, 16-605-07
16-605-14 to 16-605-105 RPC Registration Failure 16-606-07 to 16-606-99 Cannot Register For Events
16-605-14 RPC call failure to IP registration service 16-606-07 Cannot register for events

16-605-26 Fault Service timed out 16-606-35 Cannot register for events

16-605-35 RPC Call Failure to NC Registration Service 16-606-46 Cannot register for events

16-605-47 RPC Call Failure to NC Registration Service 16-606-99 Cannot register for events

16-605-66 RPC Call Failure to NC Registration Service Procedure

16-605-67 RPC Call Failure to NC Registration Service
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
16-605-105 Unable to unregister as RPC service during shutdown not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Procedure Cycle system power. The error persists.
Y N
WARNING Perform SCP 6 Final Actions.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Perform GP 9 to reload system software.
Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists.
Y N
Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-605-14 to 16-605-105, 16-606-07 to 16-606-99 2-70 Xerox WorkCentre 6655 Color Multifunction Printer
16-606-105 OS Problem 16-607-19 to 16-608-14 Invalid RPC Data / Unable to Free
16-606-105 OS problem Resources
16-607-19 Invalid RPC data received
Procedure
WARNING 16-607-46 Invalid RPC data received
Ensure that the electricity to the machine is switched off while performing tasks that do
16-607-47 Invalid RPC disk diagnostic data received
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
16-607-92 Invalid RPC data received
Cycle system power. The error persists.
Y N
16-607-105 Service run loop failed
Perform SCP 6 Final Actions.
16-608-09 Unable to free IPC resources
Perform GP 9 to reload system software.
16-608-11 IPC unregister failed

16-608-14 Unable to free IPC resources

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists.
Y N
Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-71 16-606-105, 16-607-19 to 16-608-14
16-608-26 Fault Service Failed to Unbind RAP 16-608-28 to 16-608-67 Unable to Free IPC Resources
16-608-26 Fault service failed to unbind with SC 16-608-28 IPC unregister fail

Procedure 16-608-35 Unable to Free IPC resources

WARNING 16-608-38 Unable to unregister as IPC server
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. 16-608-46 Unable to Free IPC resources
Moving parts can cause injury.
If a single occurrence, perform GP 9 to reload system software. The error persists. 16-608-66 Unable to Free IPC resources
Y N
Perform SCP 6 Final Actions. 16-608-67 Unable to Free IPC resources

Check the Hard Drive harness connections. The error persists. Procedure
Y N
Perform SCP 6 Final Actions.
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Install a new Hard Drive, REP 18.2.4. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists.
Y N
Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-608-26, 16-608-28 to 16-608-67 2-72 Xerox WorkCentre 6655 Color Multifunction Printer
16-608-105 Build UI SVC Obtain Client Failed 16-609-07 Unknown Message Received
16-608-105 Build UI SVC obtain client failed 16-609-07 Unknown message received from DM agent

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists. If a single occurrence, perform GP 9 to reload system software. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Cycle system power. The error persists. Check the Hard Drive harness connections. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. Install a new Hard Drive, REP 18.2.4.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-73 16-608-105, 16-609-07
16-609-19 to 16-609-105 Invalid IPC Data Failure 16-610-00, 16-610-07 IPC Send Failure
16-609-19 Invalid RPC data received 16-610-00 IPC send failure to NC TripleA service

16-609-26 IPC Fault Service 16-610-07 IPC Send Failure to DM Agent

16-609-46 Invalid IPC Data Received Procedure

16-609-47 Invalid IPC Data
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
16-609-92 Invalid IPC Data Received not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
16-609-105 Too many IPC handlers If a single occurrence, the network controller automatically retries. The error persists.
Y N
Procedure Perform SCP 6 Final Actions.
WARNING Cycle system power. The error persists.
Ensure that the electricity to the machine is switched off while performing tasks that do Y N
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Perform SCP 6 Final Actions.
Moving parts can cause injury.
If a single occurrence, perform GP 9 to reload system software. The error persists. Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Check the Hard Drive harness connections. The error persists.

Y N
Perform SCP 6 Final Actions.

Install a new Hard Drive, REP 18.2.4.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-609-19 to 16-609-105, 16-610-00, 16-610-07 2-74 Xerox WorkCentre 6655 Color Multifunction Printer
16-610-09 Cannot send IPC Message to NC Platform 16-610-11 to 16-610-90 Unable to Send IPC Message
16-610-09 Cannot send IPC message to NC Platform Manage 16-610-11 IPC communication failed

Procedure 16-610-19 Unable to send IPC message

WARNING 16-610-26 Unable to send IPC message
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. 16-610-28 IPC communication failed
Moving parts can cause injury.
Cycle system power. The error persists. 16-610-35 Unable to send IPC message
Y N
Perform SCP 6 Final Actions. 16-610-46 Unable to send IPC message

Perform GP 9 to reload system software. 16-610-90 IPC send response error

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists.
Y N
Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-75 16-610-09, 16-610-11 to 16-610-90
16-610-92 Failure to Send Queue Status 16-610-99 Unable to Send IPC Message RAP
16-610-92 Failure to send queue status 16-610-99 Unable to send IPC message

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. If a single occurrence, the network controller automatically retries. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-610-92, 16-610-99 2-76 Xerox WorkCentre 6655 Color Multifunction Printer
16-611-07, 16-611-38 Client Removal Failure 16-611-19 to 16-611-99 Unable to Remove RPC Connection
16-611-07 Client removal failure 16-611-09 Cannot remove RPC connection

16-611-38 Client removal failure 16-611-14 Cannot remove RPC connection

Procedure 16-611-19 Unable to remove RPC connection

WARNING 16-611-26 Cannot remove RPC connection
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. 16-611-46 Cannot remove RPC connection
Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists. 16-611-47 Cannot remove RPC connection
Y N
Perform SCP 6 Final Actions. 16-611-66 Unable to remove RPC connection

Cycle system power. The error persists. 16-611-67 Unable to remove RPC connection
Y N
Perform SCP 6 Final Actions. 16-611-99 Cannot remove RPC connection

Perform GP 9 to reload system software. Procedure

WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists.
Y N
Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-77 16-611-07, 16-611-38, 16-611-19 to 16-611-99
16-612-09 to 16-612-68 Unable to Do Shutdown Sync RAP 16-612-47 Upgrade Request Failed - Downgrade Not
16-612-09 Unable to do shutdown synchronization Allowed
03-306-00 Downgrade of system software not allowed
16-612-14 Unable to do shutdown synchronization
The reload process is aborted and the printer resets. If configured, an email alert is sent and
16-612-35 Unable to do shutdown synchronization
upgrade report printed. An entry is made in Upgrade History log.

16-612-46 Unable to do shutdown synchronization

Procedure
16-612-68 Unable to do shutdown synchronization WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Procedure not need electricity. Disconnect the power cord. Electricity can cause death or injury.
WARNING Moving parts can cause injury.
Obtain the current system software set, then perform GP 9 to reload system software. The
Ensure that the electricity to the machine is switched off while performing tasks that do
error persists.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Y N
Perform SCP 6 Final Actions.
If a single occurrence, the network controller automatically retries. The error persists.
Y N
Perform GP 9 to reload system software.
Perform SCP 6 Final Actions.

Cycle system power. The error persists.

Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-612-09 to 16-612-68, 16-612-47 2-78 Xerox WorkCentre 6655 Color Multifunction Printer
16-613-09 to 16-614-19 DC Sync / Comms Error 16-614-47 Invalid Software Upgrade
16-613-09 DC registration synchronization error 16-614-47 Invalid SW upgrade file

16-613-14 DC ENS synchronization error The reload process is aborted and the printer resets. If configured, an email alert is sent and
upgrade report printed. An entry is made in Upgrade History log.
16-613-19 DC sys mgr sync error
Procedure
16-614-09 DC registration communications error
WARNING
16-614-14 Digital copier ENS registration error Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
16-614-19 DC sys mgr communications error Moving parts can cause injury.
Obtain the current system software set, then perform GP 9 to reload system software. The
Procedure error persists.
Y N
WARNING Perform SCP 6 Final Actions.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Install new components as necessary
Moving parts can cause injury. • SD Card, REP 18.2.10
Cycle system power. The error persists. • IP Board, REP 18.2.6
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-79 16-613-09 to 16-614-19, 16-614-47
16-615-35 to 16-615-90 SESS Data Store Variable Not Set 16-615-47 Multiple Software Upgrade File
16-615-35 SESS data store environmental variable not set 16-615-47 Multiple SW upgrade files in directory

16-615-46 SESS data store environmental variable not set The reload process is aborted and the printer resets. If configured, an email alert is sent and
upgrade report printed. An entry is made in Upgrade History log.
16-615-66 SESS data store environmental variable not set
Procedure
16-615-67 SESS data store environmental variable not set
WARNING
16-615-90 SESS data store environmental variable not set Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Procedure Moving parts can cause injury.
Remove all but the current system software set, then perform GP 9 to reload system software.
WARNING The error persists.
Ensure that the electricity to the machine is switched off while performing tasks that do Y N
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Perform SCP 6 Final Actions.
Moving parts can cause injury.
Cycle system power. The error persists. Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-615-35 to 16-615-90, 16-615-47 2-80 Xerox WorkCentre 6655 Color Multifunction Printer
16-616-35 to 16-616-46 Data Store Initialization Failure 16-616-47 IPC Message Failure
16-616-35 Data Store initialization failure 16-616-47 IPC message failure.

16-616-38 Error - Shared Memory Failure Procedure

16-616-46 Data Store Initialization Failed
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Procedure not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
WARNING If a single occurrence, the network controller automatically retries. The error persists.
Ensure that the electricity to the machine is switched off while performing tasks that do Y N
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Perform SCP 6 Final Actions.
Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Cycle system power. The error persists. Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-81 16-616-35 to 16-616-46, 16-616-47
16-616-67 Submission of Email or IFax Job Failed 16-617-19 Send Event Failure Unable to send event to NC
16-616-67 Submission of Email or IFax Job Failed 16-617-19 Send Event Failure Unable to send event to NC ENS

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
If a single occurrence, the network controller automatically retries. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Cycle system power. The error persists. Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Send a different job. The error persists.

Y N
Perform SCP 6 Final Actions.

Save customer NVM with dC361, then reset and restore NVM. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-616-67, 16-617-19 2-82 Xerox WorkCentre 6655 Color Multifunction Printer
16-617-47 Upgrade Request Failed -TAR Extraction Failure 16-618-47 DLM SPI Extraction Failure RAP
16-617-47 TAR extraction failure 16-618-47 DLM SPI Extraction failure

The reload process is aborted and the printer resets. If configured, an email alert is sent and Procedure
upgrade report printed. An entry is made in Upgrade History log.
WARNING
Procedure Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
WARNING Moving parts can cause injury.
Ensure that the electricity to the machine is switched off while performing tasks that do Cycle system power. The error persists.
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Y N
Moving parts can cause injury. Perform SCP 6 Final Actions.
For a single occurrence, cycle system power. The error persists.
Y N Perform GP 9 to reload system software.
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-83 16-617-47, 16-618-47
16-619-14 to 16-619-93 Unable to Unregister Registration 16-619-47 Upgrade Request Failed - DMPR Failure at Web
service 16-619-47 Upgrade request failed - DMPR failure at web
16-619-14 Unable to unregister Registration service
The reload process is aborted and the printer resets. If configured, an email alert is sent and
upgrade report printed. An entry is made in Upgrade History log.
16-619-19 Unable to unregister Registration service

16-619-26 Could not unregister with Registration Service Procedure

WARNING
16-619-46 Unable to unregister with NC due to RPC timeout
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
16-619-68 Unable to unregister with NC due to RPC timeout
Moving parts can cause injury.
For a single occurrence, cycle system power. The error persists.
16-619-93 Unable to unregister with NC due to RPC timeout
Y N
Perform SCP 6 Final Actions.
Procedure
WARNING Perform GP 9 to reload system software.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-619-14 to 16-619-93, 16-619-47 2-84 Xerox WorkCentre 6655 Color Multifunction Printer
16-620-07 to 16-620-99 Registration Service Failed 16-620-47 Upgrade Request Rejected
16-620-07 Failure to unregister with NC 16-620-47 Upgrade request rejected

16-620-14 Unable to unregister Registration service The reload process is aborted and the printer resets. If configured, an email alert is sent and
upgrade report printed. An entry is made in Upgrade History log.
16-620-19 Unable to unregister Registration service
Procedure
16-620-35 Unable to unregister Registration service
WARNING
16-620-38 Unable to unregister with NC Registration Service Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
16-620-39 Completed job log is unable to Unregister with Registration Service Moving parts can cause injury.
For a single occurrence, cycle system power. The error persists.
16-620-46 Unable to Unregister with Registration Service Y N
Perform SCP 6 Final Actions.
16-620-90 Unable to unregister with NC (Reg Service failure)
Perform GP 9 to reload system software.
16-620-92 Unable to unregister with Registration Service

16-620-93 Unable to unregister with NC (Reg Service failure)

16-620-99 Unable to unregister with NC (Reg Service failure)

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-85 16-620-07 to 16-620-99, 16-620-47
16-621-00 to 16-621-99 Unable to Get Host Name 16-622-07 to 16-622-46 Corrupt O/S RPC Table
16-621-00 Unable to get host name 16-622-07 Corrupt O/S RPC Table

16-621-07 Unable to get host name 16-622-09 Corrupt O/S RPC Table

16-621-11 Unable to get host name 16-622-11 Corrupt O/S RPC Table

16-621-28 Unable to get host name 16-622-14 Corrupt O/S RPC Table

16-621-35 Get Host Name failed 16-622-19 Corrupt O/S RPC Table

16-621-38 Unable to get host name 16-622-26 Corrupt O/S RPC Table

16-621-47 Get Host Name failed 16-622-28 Corrupt O/S RPC Table

16-621-66 Unable to get the host name 16-622-35 Corrupt O/S RPC Table

16-621-67 Unable to get the host name 16-622-38 Corrupt O/S RPC Table

16-621-93 Unable to get host name 16-622-46 Corrupt O/S RPC Table

16-621-99 Get Host Name failed 16-622-47 Software upgrade file failure.

Initial Actions Procedure

Check printer network settings. WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Procedure not need electricity. Disconnect the power cord. Electricity can cause death or injury.
WARNING Moving parts can cause injury.

Ensure that the electricity to the machine is switched off while performing tasks that do Cycle system power. The error persists.
Y N
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Perform SCP 6 Final Actions.

Cycle system power. The error persists. Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-621-00 to 16-621-99, 16-622-07 to 16-622-46 2-86 Xerox WorkCentre 6655 Color Multifunction Printer
16-622-47 FTP "get" Failure 16-622-66 to 16-622-68 Failed to Unregister as RPC Service
16-622-47 FTP "get" failure During Shutdown
16-622-66 Failed to unregister as RPC service during shutdown
The reload process is aborted and the printer resets. If configured, an email alert is sent and
upgrade report printed. An entry is made in Upgrade History log.
16-622-67 Failed to unregister as RPC service during shutdown

Procedure 16-622-68 Cannot unregister from registration service

WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Procedure
not need electricity. Disconnect the power cord. Electricity can cause death or injury. WARNING
Moving parts can cause injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
For a single occurrence, cycle system power. The error persists. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Y N Moving parts can cause injury.
Perform SCP 6 Final Actions.
Cycle system power. The error persists.
Y N
Perform GP 9 to reload system software.
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-87 16-622-47, 16-622-66 to 16-622-68
16-623-35, 16-623-47, 16-624-46 RPC Call Failure 16-625-35 to 16-625-90 Invalid IPC Type
16-623-35 RPC Call Failure to ENS 16-625-35 Invalid IPC Type

16-623-47 RPC Call Failure to ENS 16-625-46 Invalid IPC Message Type

16-624-46 Unable to create RPC connection 16-625-66 Invalid IPC Message Type

Procedure 16-625-67 Invalid IPC Message Type

WARNING 16-625-90 Invalid Queue Service IPC message type
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Procedure
Moving parts can cause injury.
Cycle system power. The error persists.
WARNING
Y N Ensure that the electricity to the machine is switched off while performing tasks that do
Perform SCP 6 Final Actions. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Perform GP 9 to reload system software. Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-623-35, 16-623-47, 16-624-46, 16-625-35 to 16-625- 2-88 Xerox WorkCentre 6655 Color Multifunction Printer
16-626-00 to 16-626-67 Memory Allocation Error 16-628-07 to 16-628-67 Range String Variable Error
16-626-00 Memory Allocation Error 16-628-07 Range String could not be computed

16-626-11 Can't allocate memory to load a template 16-628-09 Unable to complete RPC call

16-626-38 Memory Allocation Error 16-628-35 Unable to complete RPC call

16-626-47 Memory Allocation Error 16-628-46 Range String calculation failed

16-626-67 Memory allocation failed 16-628-66 Object write value out of range

Procedure 16-628-67 Cannot get range environment variable

WARNING
Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. WARNING
Moving parts can cause injury. Ensure that the electricity to the machine is switched off while performing tasks that do
Cycle system power. The error persists. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Y N Moving parts can cause injury.
Perform SCP 6 Final Actions. Cycle system power. The error persists.
Y N
Reseat IP Board RAM. The error persists. Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions. Perform GP 9 to reload system software.

Use dC361 to save customer NVM settings, then reset and restore NVM. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-89 16-626-00 to 16-626-67, 16-628-07 to 16-628-67
16-629-11 to 16-629-93 No Acknowledgment For RPC 16-630-09 to 16-630-99 Unable to Get RPC Client Handle
16-629-11 RPC call failure 16-630-09 Unable to connect to a service using RPC

16-629-26 Fault Service Call to PSW Callback failed 16-630-26 Fault Service Failed to get RPC Client Handle

16-629-46 No Acknowledgment to RPC Message. RPC time-out 16-630-35 Unable to Get RPC Client Handle

16-629-67 No acknowledgment for RPC message. 16-630-38 Client Create Failed

16-629-68 No acknowledgment for RPC message. 16-630-46 Unable to Get RPC Client Handle

16-629-92 No Acknowledgment to RPC Message. RPC timeout. 16-630-47 Unable to Get RPC Client Handle

16-629-93 No Acknowledgment to RPC Message. RPC timeout 16-630-66 Unable to get RPC client handle.

Procedure 16-630-67 Unable to get RPC client handle.

WARNING 16-630-68 Unable to get RPC client handle.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. 16-630-99 Unable to Get RPC Client Handle
Moving parts can cause injury.
Cycle system power. The error persists. Procedure
Y N
Perform SCP 6 Final Actions.
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Perform GP 9 to reload system software. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-629-11 to 16-629-93, 16-630-09 to 16-630-99 2-90 Xerox WorkCentre 6655 Color Multifunction Printer
16-631-19 to 16-636-99 XDR Data Error 16-637-11 to 16-637-95 File Error
16-631-19 Invalid Event Notification Received 16-637-11 Can't open template cache file

16-631-46 Unexpected Event Notification 16-637-26 Unable to open file

16-633-19 NVM Detach Error 16-637-38 Unable to Open File for Write

16-634-46 Unable to specify Shutdown Routine during Initialization 16-637-47 Failed to Open File

16-635-07 Cannot free XDR data 16-637-66 File I/O error.

16-635-35 Cannot free XDR data 16-637-67 File I/O error.

16-635-46 Unable to free XDR data 16-637-93 Unable to open local file

16-635-99 Cannot free XDR data 16-637-95 Unable to open local file

16-636-35 Unable to unmarshall XDR data Procedure

16-636-99 Unable to unmarshall XDR data
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Procedure not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
WARNING Cycle system power. The error persists.
Ensure that the electricity to the machine is switched off while performing tasks that do Y N
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Perform SCP 6 Final Actions.
Moving parts can cause injury.
Cycle system power. The error persists. Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-91 16-631-19 to 16-636-99, 16-637-11 to 16-637-95
16-638-66 to 16-641-46 O/S Failure 16-642-46 to 16-645-67 File I/O Errors
16-638-66 Unable to initialize with queue library 16-642-46 Invalid Internal Parameters

16-638-67 Unable to initialize with queue library 16-642-47 Invalid Internal Parameters

16-639-38 Create Thread Fault 16-643-19 Unable to close file

16-639-46 Pthread create error 16-643-26 Unable to close file

16-640-28 RPC call failure 16-643-47 Failed to close a file

16-640-35 RPC send 16-644-11 Can't read template cache file

16-640-46 Unable to create Semaphore 16-644-26 Unable to read from file

16-641-00 Cannot log fault to NC Fault Log 16-644-47 SWVerify Get_next_proc failed

16-641-26 Cannot log fault to IP fault log 16-644-66 File I/O error

16-641-46 Cannot log fault to NC fault service 16-644-67 File I/O error

Procedure 16-645-11 Can't write updated template cache file

WARNING 16-645-26 Unable to write to file
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. 16-645-46 Failed to Write File
Moving parts can cause injury.
Cycle system power. The error persists. 16-645-47 Failed to Write File
Y N
Perform SCP 6 Final Actions. 16-645-66 File I/O error

Perform GP 9 to reload system software. 16-645-67 File I/O error

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-638-66 to 16-641-46, 16-642-46 to 16-645-67 2-92 Xerox WorkCentre 6655 Color Multifunction Printer
16-646-26 to 16-650-99 Invalid Service Attribute 16-651-19 to 16-656-38 Registration Failure
16-646-26 Failed to delete file 16-651-19 Cannot register for SESS Events

16-647-19 Unable to get Time and Date 16-651-35 Cannot register for SESS Events

16-647-26 Unable to become Client of Diag Service 16-651-99 SPI register failed

16-649-35 Invalid service attribute defaults 16-652-38 Unable to Enroll Spi Callbacks

16-650-35 Invalid service attribute requested 16-652-99 SPI enroll failed

16-650-99 Invalid service attribute requested 16-653-38 Error - Invalid Job Handle Fault

Procedure 16-654-38 Return from spi_register Fault

WARNING 16-654-99 Return from Log_init Fault
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. 16-655-38 Return from spi_register Fault
Moving parts can cause injury.
Cycle system power. The error persists. 16-656-38 RPC processing fault
Y N
Perform SCP 6 Final Actions. Procedure
Perform GP 9 to reload system software.
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-93 16-646-26 to 16-650-99, 16-651-19 to 16-656-38
16-658-07 Unable to Get Host Name 16-659-07 to 16-667-95 Parser Utility Errors
16-658-07 Unable to get host name 16-659-11 Parser utility open failure.

Initial Actions 16-659-28 Parser utility open failure.

Check printer network settings.
16-659-93 Parser utility open failure.

Procedure 16-659-95 Parser utility open failure.

WARNING
16-660-95 Cannot read local directory entries.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
16-660-99 Service initialization failed.
Moving parts can cause injury.
Cycle system power. The error persists.
16-661-95 Cannot create spool directory.
Y N
Perform SCP 6 Final Actions.
16-662-11 Parser utility template failed to parse.

Perform GP 9 to reload system software.

16-662-28 Parser utility template failed to parse.

16-662-93 Parser utility template failed to parse.

16-662-95 Parser utility template failed to parse.

16-663-11 Parser utility destroy template failed

16-663-28 Parser utility destroy template failed

16-663-93 Parser utility destroy template failed

16-663-95 Parser utility destroy template failed

16-664-11 Parser utility parser closing failed

16-664-28 Parser utility parser closing failed

16-664-93 Parser utility parser closing failed

16-664-95 Parser utility parser closing failed

16-665-95 Unable to detach from child thread

16-666-11 Parser utility invocation failed.

16-666-28 Parser utility invocation failed.

16-666-93 Parser utility invocation failed.

16-666-95 Parser utility invocation failed

16-667-11 Parser utility set status failed.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-658-07, 16-659-07 to 16-667-95 2-94 Xerox WorkCentre 6655 Color Multifunction Printer
16-667-28 Parser utility set status failed. 16-668-47 Write NVM Failed
16-668-47 Write NVM Failed
16-667-95 Parser utility set status failed.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Cycle system power. The error persists.
Y N
Y N
Perform SCP 6 Final Actions.
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. The error persists.

Perform GP 9 to reload system software.
Y N
Perform SCP 6

Replace the IP Board, REP 18.2.6

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-95 16-659-07 to 16-667-95, 16-668-47
16-668-93, 16-668-95 Unable To Determine Local File 16-669-28 to 16-670-00 Unable To Write Job Template
Statistics 16-669-28 Unable to write job template to network controller disk.
16-668-93 Unable to determine local file statistics
16-669-93 Unable to write job template to network controller disk.
16-668-95 Unable to determine local file statistics
16-669-95 Unable to write job template to network controller disk.
Procedure 16-670-00 Unable to lock/unlock data store.
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Procedure
not need electricity. Disconnect the power cord. Electricity can cause death or injury. WARNING
Moving parts can cause injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Cycle system power. The error persists.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Y N
Moving parts can cause injury.
Perform SCP 6 Final Actions.
Cycle system power. The error persists.
Y N
Perform GP 9 to reload system software.
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-668-93, 16-668-95, 16-669-28 to 16-670-00 2-96 Xerox WorkCentre 6655 Color Multifunction Printer
16-670-11 to 16-671-47 Unable To Decode Template File 16-671-93 to 16-673-95 File Error
16-670-11 Unable to decode template file 16-671-93 Unable to encode template file

16-670-28 Unable to decode template file 16-671-95 Unable to encode template file

16-670-47 Save NVM Failed 16-672-09 Unable to remove file from system

16-670-93 Unable to decode template file 16-672-95 Unable to remove file from system

16-671-00 Sort jobs failed 16-673-95 Cannot remove local directory

16-671-47 Init NVM failed Procedure

WARNING
Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do
WARNING not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Cycle system power. The error persists.
Moving parts can cause injury. Y N
Cycle system power. The error persists. Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions. Perform GP 9 to reload system software.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-97 16-670-11 to 16-671-47, 16-671-93 to 16-673-95
16-674-00 to 16-709-00 XSA Database Error 16-710-00 to 16-750-11 Unable To Create Client Handle
16-674-00 XSA RPC Server Death 16-710-00 NC Internal Communication Failure

16-674-09 XSA RPC Server Death 16-710-35 IPC send failure

16-675-00 XSA Database Server Death 16-716-00 Data Store init failed

16-700-00 Unknown Attribute Requested 16-718-00 Data Store Full

16-700-35 Unknown attribute requested 16-720-00 Disk Partition Full

16-701-00 Unable to communicate with XSA database 16-728-00 Unable to compute Range String

16-701-68 Unable to communicate with Postgre database. Status code 16-536 is raised with 16-730-00 Unable to create Client Handle
this fault code.
16-730-35 Unable to create Client Handle
16-701-99 Unable to communicate with XSA database
16-730-66 Unable to create Client Handle
16-702-00 Unable to communicate with XSA database
16-740-19 Error - NC Hard Disk IIO Failure
16-702-95 Unable to communicate with XSA database
16-742-19 On Demand Image overwrite failed
16-707-00 Unknown Queue Request received
16-750-07 Message Received from DM not Processed correctly
16-709-00 Unknown Modify request received
16-750-09 Cannot Add existing Service
Procedure
16-750-11 Template cache file is missing
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Procedure
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. WARNING
Cycle system power. The error persists. Ensure that the electricity to the machine is switched off while performing tasks that do
Y N not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Perform SCP 6 Final Actions. Moving parts can cause injury.
Cycle system power. The error persists.
Perform GP 9 to reload system software. Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-674-00 to 16-709-00, 16-710-00 to 16-750-11 2-98 Xerox WorkCentre 6655 Color Multifunction Printer
16-750-14 to 16-750-90 Invalid Request 16-750-92 to 16-751-26 Database Error
16-750-14 Retry SNMP event registration 16-750-92 Bad file descriptor

16-750-19 Invalid Online/ Offline request 16-750-93 IFS error when requesting memory

16-750-26 Invalid number of faults requested 16-750-95 Local Spool area does not exist

16-750-35 Queue Service library Initialization failed 16-751-00 Database Error known by Service Registry or registry not available

16-750-38 Error - SPI Init Fault 16-751-07 Message Received from NC AAA not Processed correctly

16-750-46 Unknown Object (on Read) 16-751-09 Registration receives unrequested ENS notification

16-750-47 SC Diag Startup failed 16-751-11 Initialization procedure fails

16-750-66 Failure to set service state 16-751-14 SESS SC event registration failed

16-750-67 Failure to set service state 16-751-19 Unable to set time / date

16-750-90 Invalid Queue Service IPC Queue ID 16-751-26 Unrecognized Fault Code

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-99 16-750-14 to 16-750-90, 16-750-92 to 16-751-26
16-751-28 to 16-751-93 Unknown Attribute 16-752-00 to 16-752-47 Invalid File Details
16-751-28 Templates attributes are invalid, or syntax error 16-752-00 File Cabinet Application Registration Error. Status code 17-552 is raised with this
fault code.
16-751-35 Failure to initialize with DM Agent
16-752-07 Queue Service Library Initialization Failed
16-751-38 Warning- Unknown Attribute
16-752-09 Attempt to register too many services
16-751-46 Unknown Object (on Write)
16-752-14 Retry SESS Sys Control event registration
16-751-47 SWVerify RepairDir failed
16-752-19 Cannot Acknowledge System Mode Change
16-751-66 Unable to send event to NC ENS
16-752-26 Unrecognized SESS Error Code
16-751-67 Unable to send event to NC ENS
16-752-28 Template cache file is missing
16-751-92 Job State Fault
16-752-35 Failure to initialize with PrintSpi
16-751-93 Invalid template attribute
16-752-46 Invalid table row (on Read)
Procedure
16-752-47 Invalid Test Pattern Source
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Procedure
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. WARNING
Cycle system power. The error persists. Ensure that the electricity to the machine is switched off while performing tasks that do
Y N not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Perform SCP 6 Final Actions. Moving parts can cause injury.
Cycle system power. The error persists.
Perform GP 9 to reload system software. Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-751-28 to 16-751-93, 16-752-00 to 16-752-47 2-100 Xerox WorkCentre 6655 Color Multifunction Printer
16-752-66 to 16-753-28 Scan to FAX Registration Error 16-753-35 to 16-754-09 Data Store Read Failure
16-752-66 Scan to FAX services registration error 16-753-35 Unable to change EJS status to offline

16-752-67 Scan to Distribution services registration error 16-753-46 Invalid table row (on Write)

16-752-92 Printspi can't read frame type from data store 16-753-47 Failed to Close Directory

16-752-93 Error accessing job(s) in job list 16-753-66 Data Store Read Failure

16-752-95 File transfer operation failure 16-753-67 Data Store Read Failure

16-753-00 File Cabinet Application Un-Registration Error. Status code 17-561 is raised with 16-753-90 Null Return Address
this fault code.
16-753-92 Printspi can't read frame type from data store
16-753-09 No. of services attempt to go below zero
16-753-93 Error adding job(s) in job list
16-753-14 Invalid event number error received by ENS
16-753-95 Requested transfer protocol not supported
16-753-19 Unable to send event to NC ENS
16-754-09 Exiting w/NC services still registered
16-753-26 Unable to become Client of PSW
Procedure
16-753-28 Cannot communicate with UI for template list request
WARNING
Procedure Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
WARNING Moving parts can cause injury.
Ensure that the electricity to the machine is switched off while performing tasks that do Cycle system power. The error persists.
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Y N
Moving parts can cause injury. Perform SCP 6 Final Actions.
Cycle system power. The error persists.
Y N Perform GP 9 to reload system software.
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-101 16-752-66 to 16-753-28, 16-753-35 to 16-754-09
16-754-14 to 16-754-68 OS Error 16-754-90 to 16-755-28 Fault Service Error
16-754-14 Event notification via IPC error - no queue 16-754-90 Attempt to Free Null Node

16-754-19 Shutdown Request Reason Unknown 16-754-92 Consumer Interface Fault

16-754-26 Fault Service encountered error reading fault log 16-754-93 Error deleting jobs from job list

16-754-28 Initialization procedure fails 16-754-95 Unable to remove advisory lock on network server

16-754-35 Can not generate SESS event 16-755-00 Service Registry cannot initialize database

16-754-46 Attempted write of read-only object 16-755-09 Unable to register requested service

16-754-47 SWVerify Repair file failed 16-755-14 Event notification via IPC error - full queue

16-754-66 OS problem 16-755-19 Unable to provide new s/w config to SESS

16-754-67 OS problem 16-755-26 Fault Service failed to Clear Fault Log

16-754-68 Initialize procedure fails 16-755-28 Cancel Request Failed

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-754-14 to 16-754-68, 16-754-90 to 16-755-28 2-102 Xerox WorkCentre 6655 Color Multifunction Printer
16-755-35 to 16-756-14 Request Error 16-756-26 to 16-757-26 NVM Corrupt
16-755-35 Unable to update Data Store attribute 16-756-26 Memory Allocation Failure

16-755-46 Object type mismatch 16-756-35 Unable to read NVM value

16-755-47 SWVerify Repair permission failed 16-756-46 ServiceRun loop failed

16-755-67 Cancel Request Failed 16-756-47 SC Run Diagnostic failed

16-755-90 Exceeding Queue Array Size 16-756-66 Unable to read NVM value

16-755-93 Unable to initialize with IFS 16-756-67 Unable to read NVM value

16-755-99 Unable to abort job fault 16-756-93 IPA operation failed

16-756-09 Unable to unregister requesting service 16-757-09 Invalid RPC parameters

16-756-14 RPC creation error: RPC coms to client services error 16-757-14 RPC Control error

Procedure 16-757-19 System Manager callback sm_operation complete failed

WARNING 16-757-26 Fault Service could not close Fault Log
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Procedure
Moving parts can cause injury.
Cycle system power. The error persists.
WARNING
Y N Ensure that the electricity to the machine is switched off while performing tasks that do
Perform SCP 6 Final Actions. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Perform GP 9 to reload system software. Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. The error persists.

Y N
Perform SCP 6 Final Actions.

Replace the IP Board, REP 18.2.6.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-103 16-755-35 to 16-756-14, 16-756-26 to 16-757-26
16-757-35 to 16-758-26 Unable to Write NVM 16-758-35 to 16-759-26 Service Run Loop Failed
16-757-35 Unable to write NVM value 16-758-35 Unable to change EJS state to OFF line

16-757-46 Failed to get a specific IPC queue 16-758-46 Registration Monitor Failure

16-757-47 SWVerify Repair chksum failed 16-758-47 Error Finding Job Id

16-757-66 Unable to write NVM 16-758-66 ServiceRun loop failed

16-757-67 Unable to write NVM 16-758-67 ServiceRun loop failed

16-757-93 Unable to set ICS document state 16-758-93 Unable to obtain data store object handle

16-758-09 Invalid service failure reported 16-759-09 Unable to map process death

16-758-14 RPC communications error to client 16-759-14 Request for wildcard from non-NC

16-758-19 Unable to Unregister Registration Service 16-759-19 NC Failed Cold Reset 3 Times in a Row

16-758-26 Fault Service: Error trying to access queue ID 16-759-26 Unrecognized Service ID requesting Fault Information

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. The error persists. Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Replace the IP Board, REP 18.2.6.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-757-35 to 16-758-26, 16-758-35 to 16-759-26 2-104 Xerox WorkCentre 6655 Color Multifunction Printer
16-759-46 to 16-760-46 Fail to Enable Process 16-760-47 to 16-761-46 File Error
16-759-46 Failed to disable or enable a process 16-760-47 Incorrect Checksum partition 1

16-759-47 Failed to Abort Process 16-760-67 Create List Failed

16-759-66 OA event register failed 16-760-68 SRS returns invalid or missing data

16-759-67 OA event register failed 16-760-93 Job report failure from CCM

16-759-93 Unable to create .DAT file 16-760-99 Request for system policy failed

16-760-09 Scan To File process death 16-761-09 LPD process death

16-760-14 Invalid unregister request. 16-761-14 Invalid RPC data

16-760-19 NC Initializing 16-761-19 NC Shutting Down

16-760-26 Unable to become Client of RDT 16-761-26 Unable to become client of UI

16-760-46 Processes is in an unknown state 16-761-46 Ethernet status file error

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-105 16-759-46 to 16-760-46, 16-760-47 to 16-761-46
16-761-47 to 16-769-95 Other Network Faults 1 16-764-14 Internal Logic error

16-761-47 SWVerify Init File failed

16-764-19 Set Up of the SIGALRM Signal failed

16-761-67 Failed to Retrieve Public List

16-764-46 RARP status file error

16-761-68 Login gets no response from SRS (No IPC Response?)

16-764-47 Incorrect Checksum partition 2

16-761-93 Image conversion to TIFF failed 16-764-67 Create List Failed

16-761-95 Unable to read template pool

16-765-09 Banyan Vines process death

16-762-09 Netware process death

16-765-19 SystemMgr call failed

16-762-14 Invalid internal table type

16-765-46 Failed to clear SM status

16-762-19 DC Platform Mgr Comm Error

16-765-47 Novell Daemon not running

16-762-26 Unable to become client of SCS Diag Service

16-765-67 Failed to Retrieve Recipient List

16-762-46 Token ring status file error

16-765-93 Unable to access data store

16-762-47 Missing File

16-766-09 Adobe process failure

16-762-67 Invalid Index for Recipient List 16-766-19 DM admin error

16-762-68 Service Registry Bad data / Corrupted 16-766-46 Failed to set SM status

16-762-93 IFSImageDoneX call failed

16-766-47 No Servers Responded

16-762-95 Unable to read document repository 16-766-67 Failed to Bind to LDAP Server

16-763-09 NetBios process death 16-766-93 TIFF handle has become null

16-763-14 Reached internal limit for events

16-766-95 Cannot create Image file name

16-763-19 System Manager Comm Error 16-767-09 HP PCL process death

16-763-26 No acknowledgment to RPC message. RPC time-out 16-767-19 Request to cancel spooling job error

16-763-46 DHCP status file error

16-767-46 Failed to send SESS alert/event

16-763-47 Invalid Permission 16-767-47 Server in Config list not up

16-763-67 Failed to retrieve LDAP list 16-767-67 Error performing LDAP search

16-763-93 Document image count not found

16-767-93 Get Document Image Count failed

16-763-95 Internal destination error

16-767-95 Cannot determine filing policy for transfer

16-764-09 AppleTalk process death 16-768-09 Parallel process death

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-761-47 to 16-769-95 2-106 Xerox WorkCentre 6655 Color Multifunction Printer
16-768-19 Hold/release of jobs error 16-770-09 to 16-779-95 Other Network Faults 2
16-770-09 Unexpected process death
16-768-46 Request had invalid parameters

16-770-19 Online/Offline request time out

16-768-47 NC Not Attached to Server

16-770-46 Cannot register for SESS events

16-768-67 Error performing Public search

16-768-93 Increment image count failed 16-770-47 Attached to Queue and Server

16-770-67 Required attribute missing

16-768-95 Cannot get Network advisory lock file name

16-771-09 Print Service EJS process death

16-769-09 HTTP process death

16-771-19 Online/Offline callback failure

16-769-19 Novell Network communications error

16-771-46 Internal error with Synchronizer queue

16-769-46 Config Methods library error

16-771-47 Novell Config Info Failure

16-769-47 NC Not Attached to print queue

16-772-09 NC Print SPI process death

16-769-67 Failed to Cancel Search Request

16-772-19 Failure to set NC Platform Manager service state

16-769-93 IFS deregister call failed

16-769-95 Cannot determine appropriate lock name/address 16-772-46 TCPIP status file error

16-772-47 RPC Failure for communication

Procedure
WARNING 16-772-95 Invalid transfer request
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. 16-773-09 NC Print Service Surrogate process death
Moving parts can cause injury.
Cycle system power. The error persists. 16-773-19 Unknown client requested online/offline
Y N
16-773-46 Failed requesting platform reset
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. 16-774-09 NC Protocol Module process death

16-774-19 Can not obtain RPC connection

16-774-46 BOOTP status file error

16-775-19 Can not obtain Data Store handle for server object

16-775-46 TCPIP missing configuration data

16-775-95 Cannot create temporary file name

16-776-09 NC Fault Service process death

16-776-19 Cannot delete jobs using Job Map library

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-107 16-761-47 to 16-769-95, 16-770-09 to 16-779-95
16-776-46 TCPIP invalid interface 16-780-00 to 16-789-47 Other Network Faults 3
16-780-00 Power Saver request time out
16-776-95 Cannot clean up after job completion

16-780-09 NC Authentication SPI process death

16-777-09 NC Completed Job Log Service/SPI process death

16-780-19 Power Saver request time out

16-777-19 Cannot access Data Store element

16-777-46 TCPIP invalid addressing 16-780-46 TCPIP enable interface

16-780-47 SESS IPX test failed on open for receive

16-777-95 Cannot log requested network server

16-780-95 Cannot determine the remote directory

16-778-09 NC Configuration Utility process death

16-781-09 NC Counters Utility process death

16-778-19 Invalid Enable Demo Job setting

16-781-19 Network Upgrade Checksum Error

16-778-46 TCPIP socket failure

16-781-46 TCPIP NVRAM Failure.

16-778-95 Cannot generate confirmation sheet

16-781-47 SESS IPX test failed on bind for send

16-779-00 Power Save Complete callback failed

16-782-09 NC Configuration Synchronization process failure

16-779-09 NC Diagnostic Service process death

16-779-19 Power Save Complete callback failed 16-782-19 SW Upgrade manifest mismatch

16-779-46 TCPIP interface attach 16-782-46 TCPIP Gateway Failure

16-782-47 SESS IPX test failed on bind for receive

16-779-47 SESS IPX test failed on open for send

16-779-95 Cannot create the template/job log name. 16-783-09 Unable to send sc_proc_disable()

16-783-19 NC Failure to enter upgrade mode.

Procedure
WARNING 16-783-46 TCPIP host file failure
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. 16-783-47 SESS IPX test send failure
Moving parts can cause injury.
Cycle system power. The error persists. 16-784-09 Missing service type
Y N
16-784-19 Upgrade aborted - IOT failed to enter Upgrade Mode
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. 16-784-46 TCPIP Resolve File Failure

16-784-47 SESS IPX test receive failure

16-785-09 NC SNMP Agent process failure

16-785-19 Upgrade aborted - UI failed to enter Upgrade Mode

16-785-46 TCPIP Resolve File Failure

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-770-09 to 16-779-95, 16-780-00 to 16-789-47 2-108 Xerox WorkCentre 6655 Color Multifunction Printer
16-785-47 SESS IPX test bad data in receive 16-790-09 to 16-799-47 Other Network Faults 4
16-790-09 Lan Fax process death
16-786-09 Token Ring process death

16-790-19 NC PM Failed to install Job Based Accounting

16-786-19 NC failure to uncompress upgrade file

16-790-47 SESS Banyan test unknown error

16-786-46 TCPIP ELT File Failure

16-786-47 SESS IPX test unknown error 16-791-09 Accounting process death

16-791-19 Scan to File DLM is not defined

16-787-09 Sub agent process death

16-791-46 DHCP for IPv6 failed. Status code 17-512 is raised for the fault code.
16-787-19 IOT SW Upgrade failed

16-791-47 SESS Banyan test no network

16-787-46 TCPIP IPC failure

16-792-09 Tiff process death

16-787-47 SESS Apple test zip failure - network unreachable

16-792-19 Lan Fax DLM is not defined

16-788-09 Serial process death

16-792-47 SESS Banyan test open failure

16-788-19 NC PM Failed to install Scan to File

16-793-09 Port9100 process death

16-788-46 Dynamic DNS status file error

16-788-47 SESS Apple test no zones found 16-793-19 Job Based Accounting DLM is not defined

16-789-09 Connectivity Configuration Server process death 16-793-47 SESS Banyan test echo failure

16-794-09 Cross platform synchronization error

16-789-19 NC PM Failed to install LAN FAX

16-789-46 Autonet status file error 16-794-19 Install Password mismatch

16-789-47 SESS Apple test unknown error 16-794-47 SESS Banyan test no servers

16-795-09 Slpsa process death

Procedure
WARNING 16-795-19 NC PM Failed to remove LAN FAX
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. 16-795-47 SESS NetBIOS test no lanas found
Moving parts can cause injury.
16-796-09 SSDP process death
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions. 16-796-19 NC PM Failed to remove Scan to File

Perform GP 9 to reload system software. 16-796-47 SESS NetBIOS test invalid command

16-797-09 USB process death

16-797-19 NC PM Failed to remove Job Based Accounting

16-797-47 SESS NetBIOS test interface busy

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-109 16-780-00 to 16-789-47, 16-790-09 to 16-799-47
16-798-09 POP3 process death 16-800-09 to 16-809-47 Other Network Faults 5
16-800-09 List access failure (create, add, find, delete)
16-798-19 Option already enabled

16-800-19 Option not supported

16-798-47 SESS NetBIOS test too many commands

16-800-46 Ethernet Initialization failure

16-799-09 SMTP process death

16-799-19 Option already enabled 16-800-47 SESS NetBIOS test cannot cancel

16-801-09 Invalid SESS event/IPC error

16-799-47 SESS NetBIOS test invalid adapter

16-801-19 Serial Number mismatch

Procedure
WARNING 16-801-46 Token Ring Initialization failure
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. 16-801-47 SESS NetBIOS test oem x (unusual network problem)
Moving parts can cause injury.
16-802-09 Invalid SESS event/IPC error
Cycle system power. The error persists.
Y N
16-802-19 Counters do not match
Perform SCP 6 Final Actions.

16-802-46 DHCP Initialization failure

Perform GP 9 to reload system software.

16-802-47 SESS NetBIOS test adapter malfunction

16-803-09 Invalid SESS event/IPC error

16-803-46 RARP Initialization failure

16-803-47 SESS NetBIOS test cannot init token ring

16-804-09 Invalid SESS event/IPC error

16-804-47 SESS NetBIOS test no cable connected to board

16-805-09 Invalid SESS event/IPC error

16-805-19 Accounting install failed

16-805-47 SESS NetBIOS test could not join ring

16-806-00 CPI service Death Error

16-806-09 CPI service unavailable

16-806-19 Counters did not increment

16-806-47 SESS NetBIOS test cable not connected to MAU

16-807-00 JobLog Service Death Error

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-790-09 to 16-799-47, 16-800-09 to 16-809-47 2-110 Xerox WorkCentre 6655 Color Multifunction Printer
16-807-09 Job log service unavailable 16-810-00 to 16-819-47 Other Network Faults 6
16-810-00 Scan To Distribution Service Death Error
16-807-19 State change failed

16-810-09 Scan service unavailable

16-807-47 SESS NetBIOS test memory allocation error

16-810-19 Failed to remove Accounting

16-808-00 Job Tracker Service Death Error

16-808-09 Job tracker service unavailable 16-810-47 SESS NetBIOS test network is bad

16-811-00 SMB Service Death Error

16-808-47 SESS NetBIOS test no more minor devices available

16-811-09 SMB service unavailable

16-809-00 Kerberos Service Death Error

16-811-19 Failed to change the enable upgrade flag

16-809-09 Kerberos service unavailable

16-811-47 SESS NetBIOS test command timed out

16-809-47 SESS NetBIOS test token ring board was stopped

16-812-00 TCP/IP Service Death Error

Procedure
WARNING 16-812-09 TCPIP service unavailable.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. 16-812-19 Failed to change the enable upgrade flag.
Moving parts can cause injury.
Cycle system power. The error persists. 16-812-47 SESS NetBIOS test message incomplete
Y N
Perform SCP 6 Final Actions. 16-813-00 WS Scan Temp Service Death Error

16-813-09 Scan service unavailable

Perform GP 9 to reload system software.

16-813-47 SESS NetBIOS test no resources on local adapter

16-814-00 Scan Compressor Service Death Error

16-814-09 Scan compressor service unavailable

16-814-47 SESS NetBIOS test duplicate name in local name table

16-815-09 Service Registry process death

16-815-47 SESS NetBIOS test name table is full

16-816-09 EIP Service not responding

16-816-47 SESS NetBIOS test unexpected protocol received

16-817-47 SESS NetBIOS test NetBIOS/ix being reset

16-818-47 SESS NetBIOS test NetBIOS/ix being stopped

16-819-47 SESS NetBIOS test NetBIOS/ix not loaded

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-111 16-800-09 to 16-809-47, 16-810-00 to 16-819-47
Procedure 16-820-47 to 16-829-47 Other Network Faults 7
WARNING 16-820-47 SESS NetBIOS test NetBIOS/ix not running
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. 16-821-47 SESS NetBIOS test MAC driver went offline
Moving parts can cause injury.
16-822-47 SESS NetBIOS test error during reset
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions. 16-823-47 SESS NetBIOS test unknown error

16-824-47 SESS UNIX test unknown error

Perform GP 9 to reload system software.

16-825-47 Echo Test Failure; SESS diag name not found

16-826-47 SESS Apple test zip failure - system error

16-827-47 SESS Apple test zip failure - invalid parameters

16-828-47 SESS Apple test zip failure - no router found

16-829-47 SESS Apple test zip failure - unknown zip error

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-810-00 to 16-819-47, 16-820-47 to 16-829-47 2-112 Xerox WorkCentre 6655 Color Multifunction Printer
16-830-47 to 16-839-47 Other Network Faults 8 16-840-47 to 16-849-47 Other Network Faults 9
16-830-47 GetNetData IP Diagnostic - failed to get default router 16-840-47 System call failed

16-831-47 GetNetData IP Diagnostic - failed to get subnet mask 16-841-47 SWVerify Missing Directory

16-832-47 GetNetData IP Diagnostic - failed to get local devices 16-842-47 SWVerify Process Not Running

16-833-47 GetNetData IP Diagnostic - failed on ARP 16-843-47 SWVerify Repair Timeout

16-834-47 Novell GetNetData - failed getting default file server 16-844-47 Failed to save data to NVM

16-835-47 Novell GetNetData - failed getting frame type 16-845-47 Failed to initialize NVM

16-836-47 Novell GetNetData - failed to init netware 16-846-47 Failed to restore contents of NVM

16-837-47 GetNetData - Diagnostic Name not found 16-847-47 Failed to write value to NVM

16-838-47 SWVerify Setup Alarm Failed 16-848-47 Failed to read faults

16-839-47 SWVerify Repair Filelength Failed 16-849-47 Failed to create command array

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-113 16-830-47 to 16-839-47, 16-840-47 to 16-849-47
16-850-47 to 16-859-47 Other Network Faults 10 16-860-47 to 16-869-47 Other Network Faults 11
16-850-47 Failed to add substitution string 16-860-47 No response for IP Ping Test

16-851-47 Failed calling stream editor 16-861-47 Registration Monitor Failure

16-852-47 Failed to process fault for error report 16-862-47 SESS NETBIOS test invalid cancel command

16-853-47 Failed to get last reset time 16-863-47 SESS NETBIOS test illegal buffer length

16-854-47 Failed on call to fault service 16-864-47 SESS NETBIOS test illegal local session number

16-855-47 Failed on call send event 16-865-47 SESS NETBIOS test session closed

16-856-47 Failed on system command 16-866-47 SESS NETBIOS test command cancelled

16-857-47 Failed to find process 16-867-47 SESS NETBIOS test name deregistered

16-858-47 Failed to dump log 16-868-47 SESS NETBIOS test local session table full

16-859-47 Failed on software verify 16-869-47 SESS NETBIOS test no listen in remote computer

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software. Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-850-47 to 16-859-47, 16-860-47 to 16-869-47 2-114 Xerox WorkCentre 6655 Color Multifunction Printer
16-870-47 to 16-879-47 Other Network Faults 12 16-880-47 to 16-890-47 Other Network Faults 13
16-870-47 SESS NETBIOS test illegal name number 16-880-47 SESS PCI test failed on put msg call

16-871-47 SESS NETBIOS test cannot find name or no answer 16-881-47 SESS PCI test invalid argument

16-872-47 SESS NETBIOS test name in use 16-882-47 SESS PCI test failed on put msg call

16-873-47 SESS NETBIOS test name deleted 16-883-47 SESS PCI test failed on ioctl call

16-874-47 SESS NETBIOS test session abnormal end 16-884-47 SESS PCI test control flag area too small

16-875-47 SESS NETBIOS test name conflict 16-885-47 SESS PCI test driver not initialized

16-876-47 SW verify setup SIGTERM Failed 16-886-47 SESS PCI test info request failed

16-877-47 SESS PCI test unknown error 16-887-47 SESS PCI test driver failed to register

16-878-47 SESS PCI test failed to open driver 16-888-47 SESS PCI test driver failed to unregister

16-879-47 SESS PCI test failed flushing stream buffer 16-889-47 SW verify get data failed

Procedure 16-890-47 SW verify get next proc failed

WARNING
Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. WARNING
Moving parts can cause injury. Ensure that the electricity to the machine is switched off while performing tasks that do
Cycle system power. The error persists. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Y N Moving parts can cause injury.
Perform SCP 6 Final Actions. Cycle system power. The error persists.
Y N
Perform GP 9 to reload system software. Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-115 16-870-47 to 16-879-47, 16-880-47 to 16-890-47
16-891-00, 16-892-00 Edge Server Error 16-900-19 to 16-909-19 Other Network Faults 14
16-891-00 Edge server auto registration failed. Status code 17-562 is raised with this fault 16-900-19 Failed to open on SMC driver
code.
16-901-19 Failed to make ioctl call using SMC driver
16-892-00 Edge server communication failed. Status code 17-563 is raised with this fault code.
16-902-19 Address specified is invalid
Procedure
16-903-19 Result from ioctl does not match FD
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do 16-904-19 Invalid ioctl request
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. 16-905-19 Unknown ioctl failure
Cycle system power. The error persists.
Y N 16-906-19 Malloc failed for net upgrade
Perform SCP 6 Final Actions.
16-908-19 Error opening file
Perform GP 9 to reload system software.
16-909-19 Error transfer data to CCM

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-891-00, 16-892-00, 16-900-19 to 16-909-19 2-116 Xerox WorkCentre 6655 Color Multifunction Printer
16-910-19 to 16-919-19 Other Network Faults 15 16-920-19 to 16-929-19 Other Network Faults 16
16-910-19 Failed to untar File 16-920-19 ELT Daemon start failed

16-911-19 Error changing directory 16-922-19 NVM store failed

16-912-19 Install script did not execute 16-923-19 Failed saving persistent data

16-913-19 Write failure to file 16-924-19 Failed in restoring persistent data

16-914-19 Shared memory was corrupted 16-925-19 Failed saving web config data

16-915-19 Open failed 16-926-19 Failed to save data store values

16-916-19 CRC Failed 16-927-19 Failed to restore web config data

16-917-19 Failed to close on checksum 16-928-19 Failed to install files

16-918-19 CRC comparison failed 16-929-19 Failed to restore data store values

16-919-19 Restart request failed Procedure

WARNING
Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do
WARNING not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Cycle system power. The error persists.
Moving parts can cause injury. Y N
Cycle system power. The error persists. Perform SCP 6 Final Actions.
Y N
Perform SCP 6 Final Actions. Perform GP 9 to reload system software.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-117 16-910-19 to 16-919-19, 16-920-19 to 16-929-19
16-930-19 to 16-939-19 Other Network Faults 17 16-940-19 to 16-949-19 Other Network Faults 18
16-930-19 Failed to remove jobs 16-940-19 Auto-upgrade failed. Machine is in diagnostics mode.

16-931-19 Failed to close on SMC driver 16-941-19 Auto-Upgrade failed. NC to CCS Coms failure

16-932-19 NVM write failure 16-942-19 Auto-Upgrade failed. Upgrade file is invalid

16-933-19 Failed to remove file 16-943-19 Auto-Upgrade failed. File is invalid. Installed software is more recent

16-934-19 Job Based Accounting not enough dc memory 16-944-19 Auto-Upgrade failed. File is invalid. Corruption detected

16-935-19 Auto-upgrade failed. Cannot read/write attributes to machine. 16-945-19 Auto-Upgrade failed - File not valid for machine

16-936-19 Auto-upgrade failed. Cannot connect to remote server. 16-946-19 Failed install Scan to Email

16-937-19 Auto-Upgrade failed Cannot login to remote server 16-947-19 Failed to install internet Fax

16-938-19 Auto-upgrade failed. Cannot access directory on remote server 16-948-19 Remove of Scan to Email option failed

16-939-19 Auto-upgrade failed. Multiple upgrade files found on remote server 16-949-19 Remove of Internet Fax option failed

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Perform SCP 6 Final Actions. Perform SCP 6 Final Actions.

Check the system software set version, then perform GP 9 to reload system software. Check the system software set version, then perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-930-19 to 16-939-19, 16-940-19 to 16-949-19 2-118 Xerox WorkCentre 6655 Color Multifunction Printer
16-950-19 to 16-959-19 Other Network Faults 19 16-960-19 to 16-969-19 Other Network Faults 20
16-950-19 Scan to email image processing hardware not available 16-960-19 Failed to install SMTP

16-951-19 Internet fax image processing hardware not available 16-961-19 Failed to remove Kerberos.

16-952-19 Scan to Email memory size error 16-962-19 Failed to remove SMB.

16-953-19 Internet fax memory size error 16-963-19 Failed to remove SMTP

16-954-19 Internet Fax Application Registration Error. Status code 17-553 is raised with this 16-964-19 Failed to Cancel operation
fault code.
16-965-19 Failed to send Platform Unavailable
16-955-19 Internet Fax Application Registration Error. Status code 17-557 is raised with this
fault code. 16-966-19 Failed to install job tracker

16-956-19 Internet Fax Application Registration Error. Status code 17-554 is raised with this 16-967-19 Failed to remove job tracker
fault code.
16-968-19 Failed to install POP3
16-957-19 Internet Fax Application Registration Error. Status code 17-558 is raised with this
fault code. 16-969-19 Failed to remove POP3

16-958-19 Failed to install Kerberos. Procedure

16-959-19 Failed to install SMB.
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Procedure not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
WARNING Cycle system power. The error persists.
Ensure that the electricity to the machine is switched off while performing tasks that do Y N
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Perform SCP 6 Final Actions.
Moving parts can cause injury.
Cycle system power. The error persists. Perform GP 9 to reload system software.
Y N
Perform SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-119 16-950-19 to 16-959-19, 16-960-19 to 16-969-19
16-975-19 to 16-979-35 Other Network Faults 21 16-980-00 to 16-989-35 Other Network Faults 22
16-975-19 Failed to install Disk Overwrite 16-980-00 DM request Handle NULL

16-976-19 Failed to install Immediate Image Overwrite 16-980-19 NC PM failed to install G4

16-977-00 Queue List Jobs failure 16-980-35 DM request Handle NULL

16-977-19 NC PM failed to remove Disk Overwrite 16-981-00 Unable to Obtain Job Handle

16-977-35 Queue List Jobs failure 16-981-35 Unable to Obtain Job Handle

16-978-00 Unable to get copy jobs 16-982-00 Unknown Finishing Value returned

16-978-19 NC PM failed to remove Job Overwrite 16-982-19 Failed to remove Embedded Fax

16-978-35 Unable to get copy jobs 16-982-35 Unknown Finishing Value returned

16-979-00 Unknown attribute returned 16-983-00 Unknown Offset value returned

16-979-19 NC PM failed to remove Embedded Fax 16-983-19 Failed to remove G4

16-979-35 Unknown attribute returned 16-983-35 Unknown Offset value returned

Procedure 16-984-00 Unknown Job State Reason value returned

WARNING 16-984-35 Unknown Job State Reason value returned
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. 16-985-00 Unknown Medium Type value returned
Moving parts can cause injury.
Cycle system power. The error persists. 16-985-19 Workflow Scanning Application Registration Error. Status code 17-554 is raised with
Y N this fault code.
Perform SCP 6 Final Actions.
16-985-35 Unknown Medium Type value returned
Perform GP 9 to reload system software.
16-986-00 Unknown Collation value returned

16-986-19 Workflow Scanning Application Un-Registration Error. Status code 17-558 is raised
with this fault code.

16-986-35 Unknown Collation value returned

16-987-00 Unknown Tray value returned

16-987-19 Server Fax Application Registration Error. Status code 17-551 is raised with this
fault code.

16-987-35 Unknown Tray value returned

16-988-00 Unknown signature value returned

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-975-19 to 16-979-35, 16-980-00 to 16-989-35 2-120 Xerox WorkCentre 6655 Color Multifunction Printer
16-988-19 Server Fax Application Un-Registration Error. Status code 17-556 is raised with this 16-990-00 to 16-999-35 Other Network Faults 23
fault code.
16-990-00 Promote response from DM received with errors
16-988-35 Unknown signature value returned
16-990-35 Promote response from DM received with errors
16-989-00 Unknown Plex Value returned
16-991-00 Request to DM to promote Job Failed
16-989-19 Disk Encryption operation failed on one or more partitions due to a higher priority
16-991-35 Request to DM to promote Job Failed
operation

16-992-00 Unable to build SESS Job Identifier for promote

16-989-35 Unknown Plex Value returned

16-992-35 Unable to build SESS Job Identifier for promote

Procedure
WARNING 16-993-00 Unable to get admin. name from data store for promote
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. 16-993-35 Unable to get admin. name from data store for promote
Moving parts can cause injury.
16-994-00 Cancel response from DM received with errors
Cycle system power. The error persists.
Y N
16-994-35 Cancel response with errors
Perform SCP 6 Final Actions.

16-995-00 Request to DM to Cancel Job Failed

Perform GP 9 to reload system software.

16-995-35 Request to DM to Cancel Job Failed

16-996-00 Warning- Unable to build SESS Job Identifier

16-996-35 Warning- Unable to build SESS Job Identifier

16-997-00 Unable to get admin. name from data store

16-997-35 Unable to get admin. name from data store

16-998-00 Job not set to Released State

16-998-35 Job not set to Released State

16-999-00 Could Not Obtain Job PIN for Authorization

16-999-35 Could Not Obtain Job PIN for Authorization

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions.

A
Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-121 16-980-00 to 16-989-35, 16-990-00 to 16-999-35
A
Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
16-990-00 to 16-999-35 2-122 Xerox WorkCentre 6655 Color Multifunction Printer
19-300-00 to 19-310-00 Image Disk (HDD) Failure 19-401-00, 19-402-00 Out of Memory
19-300-00 Unable to read from Image Disk 19-401-00 Out of Memory - Stress Document

19-301-00 Unable to write to Image Disk 19-402-00 Out of Memory - Stress Job

19-302-00 Bad Data received from Disk NOTE: Status code 19-502 is raised with these fault codes.

19-303-00 Unable to Format Image Disk Procedure

WARNING
19-310-00 Disk System capacity fault
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Refer to GP 14. Disconnect the power cord. Electricity can cause
NOTE: Status codes 19-511 and 19-512 are raised with these fault codes.
death or injury. Moving parts can cause injury.
Procedure If this fault remains for more than five minutes, cycle system power. The fault has cleared.
Y N
WARNING Perform GP 9 to reload system software.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Go to SCP 6 Final Actions.
Moving parts can cause injury.
Check that the SATA cable from the IP Board to the Hard Drive is connected and not dam-
aged. The cable is good.
Y N
Install a replacement SATA cable.

Check the power harness from the LVPS to the Hard Drive. The wiring is good.
Y N
Repair the harness as necessary.

Install new components as necessary:

• Hard Drive, REP 18.2.4
• IP Board, REP 18.2.6

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-123 19-300-00 to 19-310-00, 19-401-00, 19-402-00
19-403-00 Out of Memory - Job in EPC 19-409-00 Video Integrity Fault
19-403-00 Out of Memory - job in EPC 19-409-00 Video integrity fault

NOTE: Status code 19-515 is raised with this fault code. NOTE: Status code 19-514 is raised with this fault code.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
No service action is required. Re-scan the job. Cycle system power, then re-run the job.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
19-403-00, 19-409-00 2-124 Xerox WorkCentre 6655 Color Multifunction Printer
19-410-00 to 19-410-13 Image Structure Failure RAP 19-750-00 EPC Memory Size Fault
19-410-00 Mark Output Timeout 19-750-00 EPC Memory Size fault

19-410-01 Video Decompressor fault Procedure

19-410-02 Compress Image timeout
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
19-410-03 Decompress Image timeout not need electricity. Refer to GP 14. Disconnect the power cord. Electricity can cause
death or injury. Moving parts can cause injury.
19-410-04 Merge Image timeout No service action required. Re-run the job.

19-410-05 Rotate Image timeout

19-410-06 Network Input Failure

19-410-07 E-Fax Send/Receive Failure

19-410-08 Scan Input Failure

19-410-09 Byte Count Error

19-410-10 Set Up Too Late

19-410-11 DMA Master Abort

19-410-12 Huffman Error

19-410-13 EOR ERROR

NOTE: Status code 19-510 is raised with -00. 19-505 is raised with the other fault codes listed.

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Refer to GP 14. Disconnect the power cord. Electricity can cause
death or injury. Moving parts can cause injury.
If this fault remains for more than five minutes, cycle system power. The error persists.
Y N
Go to SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-125 19-410-00 to 19-410-13, 19-750-00
19-752-00 Image Rotation Config Fault 19-754-00 Image Disk Config Fault
19-752-00 Image Rotation Config fault 19-754-00 Image Disk Config fault

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power, then re-run the job. Cycle system power, then re-run the job. The error persists.
Y N
Go to SCP 6 Final Actions.

Go to 19-300-00 to 19-310-00 Image Disk (HDD) Failure RAP.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
19-752-00, 19-754-00 2-126 Xerox WorkCentre 6655 Color Multifunction Printer
19-760-00 Test Patterns are Missing from EPC
19-754-00 Test Patterns are missing from EPC

NOTE: Status code 09-582 is raised with this fault code.

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Y N
Go to SCP 6 Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-127 19-760-00
Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
19-760-00 2-128 Xerox WorkCentre 6655 Color Multifunction Printer
20A Fax Troubleshooting Entry 20B Unable To Send A Fax
Use this RAP to isolate components which contribute to Fax communications failure. Use this RAP to isolate components which contribute to a send failure.

Initial Actions Initial Actions

• Check that the telephone and Fax line cables are properly connected. • Refer to the 20A Fax Troubleshooting Entry RAP and complete all of the initial actions.
• Use a hand set to dial remote number and listen to dial type, (tone / pulse)
• Check the fault history. Go to the appropriate RAP. Procedure
• Check the Fax setup for active features that would inhibit transmission, such as: Delayed WARNING
start time, Local name and ID are set, Dialing type or junk Fax prevention.
Ensure that the electricity to the machine is switched off while performing tasks that do
Check the following: not need electricity. Refer to GP 14. Disconnect the power cord. Electricity can cause
– Fax country setting death or injury. Moving parts can cause injury.
– Line setup Verify with the customer that PSTN / PABX (Public Switched Telephone Network / Private
– Options Automatic Branch Exchange) line is operational. Connect a telephone handset into line outlet
and listen for a dial tone. Use a known good telephone handset. The dial tone is present.
– Dial type setting, tone / pulse.
Y N
• Print a Fax Activity Report and check for error codes. Use the line test tool to check the telephone line. The green normal indicator light is
on.
Procedure Y N
Ask the customer to request a line check by the telephone company.
WARNING
Use a telephone handset to dial a known good number. The ring back is heard.
Ensure that the electricity to the machine is switched off while performing tasks that do Y N
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Ask the customer to request a line check by the telephone company.
Moving parts can cause injury.
Enable audio line monitor and set to Enable and High volume.
The Fax tab is available Dial the Fax number and listen for a dial tone or dialing and answer tones. A Fax tone is
Y N present.
Go to 20H Fax Tab Not Available. Y N
Enter dC131 NVM Read / Write. Reset the value at the following location:
The printer will send a Fax to all machines. NVM ID 200-415 Line1CurrentDetect = 0
Y N NVM ID 200-416 Line2CurrentDetect = 0 A Fax tone is present.
The printer will send a fax to some machines. Y N
Y N Go to the 20F Fax Board Checkout.
Go to 20B Unable To Send A Fax. Install new components as necessary:
• Fax Board, REP 18.2.11.
Go to 20C Unable To Send A Fax To Some Machines. • Telephone cable.
The Fax is working correctly. Send a three page test Fax to a known good Fax
The printer will receive a fax from the remote machine. machine. Enter Admin / Tools / Service Settings / Embedded Fax Setting / Print Fax
Y N Reports. Print a Protocol Report and check for errors.
Go to 20D Unable To Receive A Fax.
The dial tone - dialling answer tones are present.
Y N
The Fax prints out.
The exchange is receiving the digits too quickly or is not processing the digits cor-
Y N rectly. Ask the customer if the exchange is DTMF (Dual Tone Multiple Frequency) or
Go to 20E Fax Will Not Print. pulse dialing.
Perform the following:
The fault is cleared.
• Ensure that the machine is set for the correct dialing tone.
Y N
Enter dC131 NVM Read / Write. Reset the values at NVM ID 200-201
Go to 20G Fax module Checkout.
FaxLine1DialTypeDef and at NVM ID 200-202 FaxLine2DialTypeDef set to 0 =
Tone or 1 = Pulse.
The Fax is working correctly. Send a three page test Fax to a known good Fax machine. Print a
• Insert a pause ( , ) between the first and second digit of the dial string. In the
Protocol Report and check for errors.
Dialling Options select Dialling Characters / Pause / Add Character / Save.
The Fax only dials once and hangs up or the busy tone has unusual timing, frequency or
level. The busy tones are recognized.
A
Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-129 20A, 20B
A
Y N 20C Unable To Send A Fax To Some Machines
Check the number for a voice or tone answer.
Use this RAP to isolate components which contribute to a failure to send a Fax to some
The Fax is working correctly. Send a three page test Fax to a known good Fax machine. machines.
Enter Admin / Tools / Service Settings / Embedded Fax Setting / Print Fax Reports. Print a
Protocol Report and check for errors. Re-enter the details from the fax options Initial Actions
• Refer to the 20A Fax Troubleshooting Entry RAP and complete all of the initial actions.
Check that the customer is dialing the correct number. The number is correct.
Y N Procedure
Ask the customer to dial the number using the appropriate access codes. WARNING
Enable audio line monitor (Enter Admin / Tools / Service Settings / Embedded Fax Setting / Ensure that the electricity to the machine is switched off while performing tasks that do
Transmission Defaults / Audio Line Monitor) and set to Enable. Select High volume and max not need electricity. Disconnect the power cord. Electricity can cause death or injury.
time. Moving parts can cause injury.
Dial the Fax number and listen for a dial tone or dialing and answer tones. A Fax tone is The correct number is being dialled to make the connection. The connection is made.
present. Y N
Y N The exchange is not processing the digits correctly, the machine needs longer pause
Enter dC131 NVM Read / Write. Reset the value at the following location: between digits.
NVM ID 200-415 Line1CurrentDetect = 0 • Insert a pause ( , ) between the first and second digit of the dial string. In the Dialling
NVM ID 200-416 Line2CurrentDetect = 0 A Fax tone is present. Options select Dialling Characters / Pause / Add Character / Save.
Y N • Enter dC131 NVM Read / Write. Change setting at NVM ID 200-410 FaxDTMFTone-
Go to the 20F Fax Board Checkout. Time to 100.
Install new components as necessary: Call the fax number from a known good telephone and listen for the answer fax tone. The Fax
• Fax module, REP 18.2.11. tone is heard.
• Telephone cable. Y N
Fax on remote end is not picking up or no Fax is connected. Advise customer to check the
The Fax is working correctly. Send a three page test Fax to a known good Fax machine. machine at the remote end.
Enter Admin / Tools / Service Settings / Embedded Fax Setting / Print Fax Reports. Print a
Protocol Report and check for errors. Print a Protocol Report. The Protocol Report shows RNR (Receive Not Ready) is received
from the remote Fax repeatedly until time out and DCN (Disconnect). Check communication
The dial tone - dialling answer tones are present. failure after V34-PH2 / V34-PH3 or DCS / TCF. The remote Fax receives and prints the
Y N Fax.
The exchange is receiving the digits too quickly or is not processing the digits correctly. Y N
Ask the customer if the exchange is DTMF (Dual Tone Multiple Frequency) or pulse dial- Compatibility problem with remote Fax.
ing. • Print a Protocol Report and check for communication errors.
Perform the following: • Line quality too poor for Super G3 to function correctly. Possible mains interference
• Ensure that the machine is set for the correct dialing tone. on line.
Enter dC131 NVM Read / Write. Reset the values at NVM ID 200-201 • Disable V34 (Super G3). Enter dC131 NVM Read / Write. Reset the value at the fol-
FaxLine1DialTypeDef and at NVM ID 200-202 FaxLine2DialTypeDef set to 0 = Tone lowing locations:
or 1 = Pulse. – NVM ID 200-087 T30MaxSpeedL1Tx = 11 (14400).
• Insert a pause ( , ) between the first and second digit of the dial string. In the Dialling – NVM ID 200-088 T30MaxSpeed2Tx = 11 (14400).
Options select Dialling Characters / Pause / Add Character / Save. If mains noise, try installing and using line 2 instead of line 1.
• Enter dC131 NVM Read / Write. Set NVM ID 200-397 FaxTimeBeforeDial to 13. • When sending to a PC fax or fax server that has an ISDN card, there is a need to
customize the CEQ values. Enter dC131 NVM Read / Write. Set the value at NVM ID
The Fax only dials once and hangs up or the busy tone has unusual timing, frequency or level.
203-031 to 0.
Are the busy tones recognized.
The Protocol Report shows MCF (Message Confirmation) is not sent by the remote Fax (last
Y N
page), only DCN (Disconnect). The failure report printed out, but the remote fax prints
• Check the number for a voice or tone answer.
multiple copies of the job or failed page.
• Check that the values at NVM ID 200-237 to 200-241 are set to the correct defaults
Y N
to match the appropriate country setting.
The Fax is working correctly. Send a three page test Fax to a known good Fax machine.
The fax is working correctly. Send a three page test Fax to a known good Fax machine. Print a
Print a Protocol Report and check for errors.
Protocol Report and check for errors. Re-enter the details from the fax options
The machine will resend up to 10 times before printing the failure report. Set number of
resends to 1 or 2.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
20B, 20C 2-130 Xerox WorkCentre 6655 Color Multifunction Printer
 A B
20D Unable To Receive A Fax The Fax is working correctly. Send a three page test Fax to a known good Fax machine.
Print a Protocol Report and check for errors.
Use this RAP to isolate components which contribute to the fax not received from the machine.
Receive a three page test Fax from the original Fax machine. Print a Protocol Report and
Initial Actions check for errors. The Protocol Report shows communication failure after CSI / DIS
• Refer to the 20A Fax Entry RAP and complete all of the initial actions. (Called Subscriber Identified / Digital Identification Signal) or DCS / TCF (Digital Com-
mand Signal / Training Check) or after V34-PH2 / V34-PH3 or EQM (Eye Quality Monitor)
Procedure value greater than 5000.
Y N
WARNING The problem may be intermittent, inform the operator of the remote machine, they should
Ensure that the electricity to the machine is switched off while performing tasks that do report the problem to the telephone company.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Perform the following:
WARNING • Confirm line is standard PSTN / PBX analog line
Use extreme care when working in the following area. Some of the components are elec- • Line quality too poor for Super G3 or G3 to function correctly. Possible mains interference
trically energized and could cause electrical shock and personal injury if touched. on line. Possible DSL line, not properly filtered.
Verify with the customer that analog phone line is operational. Use a known good telephone • Ask customer to request Fax capable service from telephone company.
handset or use the line test tool, to check the telephone line. The dial tone is present. • If mains noise, install a new Fax Board, REP 18.2.11. Use line 1.
Y N • Enter dC131 NVM Read / Write. Set the value at the following locations:
Ask the customer to request a line check by the telephone company.
– NVM ID 200-085 T30 Maximum resolution Line 1 Rx = 7
Ensure Fax service is enabled and supported on that line by a PBX administrator.
– NVM ID 200-086 T30 Maximum resolution Line 2 Rx = 7
Call the handset from another telephone. The phone rings. This sets the receive resolution capabilities for line 1 and line 2 to 400 x 400 max, this will
Y N shorten the DIS.
Ask the customer to request a line check by the telephone company. • The DIS field is too long to enable successful communication.
Ensure Fax service is enabled and supported on that line by a PBX administrator. Enter dC131 NVM Read / Write. Change NVM ID 200-141 USSTOCKSUPPORTRAX to 0
(disable).
Enable audio line monitor and set to Enable and High volume. • Disable V34 (Super G3). Enter dC131 NVM Read / Write and reset the value at the follow-
Dial the Fax number and listen for a dial tone or dialing and answer tones. A Fax tone is
ing locations:
present.
Y N – NVM ID 200-089 T30MaxSpeedL1Rx = 11 (14400)
Go to 20G Embedded Fax Checkout – NVM ID 200-090 T30MaxSpeedL2Rx = 11 (14400)
Install new components as necessary: If the problem still exists try a lower line receive (Rx) speed: 12 = 12000, 13 = 9600, 14 =
• Fax Board, REP 18.2.11. 7200, 15 = 4800, 16 = 2400
• Telephone cable. • Send a three page test Fax from a known good fax machine.

Reconnect the fax and call the fax number from an independent telephone line and listen for a
Fax tone. The machine answers and a fax tone is heard.
Y N
Print an Activity Report. Check for receive calls on the Activity Report. Machine probably
does not bleep to indicate incoming call.
Check that the NVM values at NVM ID 200-203, NVM ID 200-423 and 200-426 are set to
the correct defaults to match the appropriate country setting. The machine answers and
a Fax tone is heard.
Y N
Go to 20G Fax Board Checkout
Install new components as necessary:
• Fax Board, REP 18.2.11.

A B
Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-131 20D
20E Fax Will Not Print 20F Fax Board Checkout
Use this RAP to solve Fax printing problems. Use this RAP to check for problems with the Fax Board.

Initial Actions Initial Actions

• Check the condition of the paper in all trays. • Cycle the system power.
• Check that the paper trays are loaded with the appropriate media for printing the Fax. • Check that the Fax Board is installed and grounded correctly.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
• If the received fax has mixed size documents (example, the first prints are 8.5 x 11 and Check for +5V from the USB port. The voltage is good.
then followed by 8.5 x 14 prints). Check in the ‘All Incomplete Jobs’ queue, the job will Y N
print 8.5 x 11 pages without printing 8.5 x 14 pages and then the job will be deleted. Install a new components as required.
Perform the following: • USB cable
In Tools menu, go to Fax setup and select: • IP Board, REP 18.2.6.
– Receive Defaults.
Install new components as necessary:
– Receive Printing mode and change to Manual.
• Fax Board, REP 18.2.11.
– In paper sizes, select correct page for each size to match the paper in the tray. • IP Board, REP 18.2.6.
– Save and then change back to Auto. Save and Exit. Switch on the machine. The fault is cleared.
• If the User Interface is asking for a size paper that is not loaded in trays. Y N
Perform the following: Return to the original fault code RAP and perform the remaining actions in the procedure.
In Tools menu, go to Fax setup and select:
– Receive Defaults. Go to SCP 6 and perform the final actions.

– Receive Printing mode.

– Select manual, change small paper setting to None and Save.

NOTE: For small, long and large paper sizes select NONE if the corresponding
paper is not loaded in the paper trays.

– Change setting to Auto and Save.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
20E, 20F 2-132 Xerox WorkCentre 6655 Color Multifunction Printer
20G Fax Problems on Digital Networks 20H Fax Tab Not Available RAP
Use this RAP to isolate the problem when using digital networks. Use this RAP to isolate the problem when the Fax service is not available or greyed out.

The Fax option was designed as an analogue Group 3 device. This will have the best perfor- Initial Actions
mance when connected to a dedicated analog phone PSTN (Public Switched Telephone Net- • Cycle system power.
work) line or POTS (Plain Old Telephone system).
• Check Fax Board installation.
• The Fax option will function on the following technologies:
– ADSL - Asymmetric Digital Subscriber Line Procedure
– DSL - Digital Subscriber Line WARNING
– VOIP - Voice Over Internet Protocol Ensure that the electricity to the machine is switched off while performing tasks that do
– FOIP - Fax Over Internet Protocol, (T.38 protocol). not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
– T1 Trunk / E1 Trunk (Europe).
The Fax tab is displayed on the Control Panel.
NOTE: Due to the compression used on the technologies. The level of performance Y N
will be lower than on a PSTN or POTS. The fax installation was not completed.
Go to Fax Setup. Select Enable and Save. Cycle system power. This will initiate the ‘Fax
• The Fax option will not function on the following technology:
Install Wizard’ and follow the prompts on the screen to complete the install of the Fax.
– ISDN - Integrated Services Digital Network
Initial Actions The Fax tab is displayed after installation.
• Cycle the system power. Y N
• Check with the customer or IT person on what network the Fax service is being used and Check that the Fax Board is installed correctly, REP 18.2.11.
Perform the following:
what is the quality of service.
1. Cycle system power.
• Check that an analogue adapter or a connection for analogue terminals are available.
2. Check the connection between the Fax Board and IP Board.
• Ask the customer to check with service provider that an analogue port for Fax service has
3. Switch on the printer.
been provided and enabled.

The super fine tab is displayed.

Procedure Y N
WARNING The Server Fax may be enabled.
Go to Admin / Tools / Service Setting / Embedded Fax Setting / Fax Setup and press Dis-
Ensure that the electricity to the machine is switched off while performing tasks that do
able and Save. This will disable the Server Fax.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
After installing Fax Module. The Fax selection tab is greyed out and requesting a pass
Perform the steps that follow:
code to enable the Fax (Scan to E-mail installed).
• Go to 20A Fax Entry RAP. Y N
• Request the latest SPAR release. The fax is installed correctly. Send a three page test fax to a known good fax machine.
• Disable V34. Enter Admin / Tools / Service Settings / Embedded Fax Setting / Print Fax Reports. Print a
Protocol Report and check for errors.
Enter dC131 NVM Read / Write and reset the value at the following locations:
– NVM ID 200-087 T30MaxSpeedL1Tx = 11 (14400)
Reload system software with the AltBoot procedure, GP 9.
– NVM ID 200-088 T30MaxSpeedL2Tx = 11 (14400)
– NVM ID 200-089 T30MaxSpeedL1Rx = 11 (14400) NOTE: Software should only be loaded on a working machine. Loading or reloading software
onto a machine (or Fax board) that has a fault will not work.
– NVM ID 200-090 T30MaxSpeedL2Rx = 11 (14400)
– NVM ID 203-105 V34toV21FallbackTime = 20
• If problems are still not resolved after these actions, then escalate the problem using the
normal escalation process

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-133 20G, 20H
20-302-00 to 20-305-00 Fax Board Hardware or Software 20-320-00 Fax Fault Not Cleared by Card Reset
Error 20-320-00 5 instances of unrecoverable fax fault not cleared by card reset
The Fax Board will automatically reset.
NOTE: Status code 20-559 is raised with this fault code.
20-302-00 Fax Card Hardware or Software error Initial Actions
• Backup the phone book and customer settings, refer to dC361 Save and Restore.
20-303-00 Fax Card Hardware or Software error

20-305-00 Fax Card Hardware or Software error Procedure

WARNING
Initial Actions Ensure that the electricity to the machine is switched off while performing tasks that do
• Backup the phone book and customer settings, refer to dC361 Save and Restore. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Procedure Cycle system power. The error persists.
WARNING Y N
Go to SCP 6 and complete the Final Actions.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Clear Fax NVM. Go to dC301 NVM Initialization, select Embedded Fax NVM initialization and
Moving parts can cause injury.
perform the routine, All Data. The error persists.
Cycle system power. The error persists. Y N
Y N Go to SCP 6 and complete the Final Actions.
Go to SCP 6 and complete the Final Actions.
Perform GP 9 to reload system software.
Clear Fax NVM. Go to dC301 NVM Initialization, select Embedded Fax NVM initialization and
perform the routine, All Data. The error persists.
Y N
Go to SCP 6 and complete the Final Actions.

Perform GP 9 to reload system software. The error persists.

Y N
Go to SCP 6 and complete the Final Actions.

Go to 20F Fax Board Checkout.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
20-302-00 to 20-305-00, 20-320-00 2-134 Xerox WorkCentre 6655 Color Multifunction Printer
20-322-00 NV Device Not Fitted to Basic Fax Card 20-323-00, 20-324-00 Fax System Memory is Low
20-322-00 NV device not fitted to basic fax card 20-323-00 Fax system memory is low

NOTE: Status code 20-558 is raised with this fault code. NOTE: Status code 20-547 is raised with this fault code.

Initial Actions 20-324-00 Not enough memory to use Fax Service

• Backup the phone book and customer settings, refer to dC361 Save and Restore.
NOTE: Status code 20-546 is raised with this fault code.

Procedure Initial Actions

WARNING • Backup the phone book and customer settings, refer to dC361 Save and Restore.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Procedure
Moving parts can cause injury. WARNING
Cycle system power. The error persists.
Ensure that the electricity to the machine is switched off while performing tasks that do
Y N
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Go to SCP 6 and complete the Final Actions.
Moving parts can cause injury.
Cycle system power. The error persists.
Clear Fax NVM. Go to dC301 NVM Initialization, select Embedded Fax NVM initialization and
Y N
perform the routine, All Data. The error persists.
Go to SCP 6 and complete the Final Actions.
Y N
Go to SCP 6 and complete the Final Actions.
Clear Fax NVM. Go to dC301 NVM Initialization, select Embedded Fax NVM initialization and
perform the routine, All Data. The error persists.
Install new parts as necessary:
Y N
• Fax Board, REP 18.2.11. Go to SCP 6 and complete the Final Actions.

Install new parts as necessary:

• Fax Board, REP 18.2.11.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-135 20-322-00, 20-323-00, 20-324-00
20-327-00 Registers Cannot be Accessed on Extended 20-331-00 to 20-341-00 Fax Network Line 1 Fault
Card 20-331-00 No comms via PSTN1 port. Status code 20-562 is raised with this fault code
20-327-00 Registers cannot be accessed on the Extended card
20-332-00 No comms via PSTN2 port. Status code 20-563 is raised with this fault code
NOTE: Status code 20-570 is raised with this fault code.
20-338-00 Fax communication error at power up or re-boot. Status code 20-549 is raised with
Initial Actions this fault code.
• Backup the phone book and customer settings, refer to dC361 Save and Restore.
20-339-00 Fax Card Internal Fault. Status code 20-571 is raised with this fault code.

Procedure 20-340-00 FaxPort2ModemFailure. Status code 20-572 is raised with this fault code.
WARNING
20-341-00 Miscellaneous Basic Card problems. Status code 20-547 is raised with this fault
Ensure that the electricity to the machine is switched off while performing tasks that do
code
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Initial Actions
Y N • Backup the phone book and customer settings, refer to dC361 Save and Restore.
Go to SCP 6 and complete the Final Actions.
Procedure
Clear Fax NVM. Go to dC301 NVM Initialization, select Embedded Fax NVM initialization and
perform the routine, All Data. The error persists.
WARNING
Y N Ensure that the electricity to the machine is switched off while performing tasks that do
Go to SCP 6 and complete the Final Actions. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Install new parts as necessary: Cycle system power. The error persists.
• Fax Board, REP 18.2.11. Y N
Go to SCP 6 and complete the Final Actions.

Check the connection between the Fax Board and the IP Board. The connections are good.
Y N
Install new parts as necessary:
• Fax harness, REP 18.2.13.
• Fax Board, REP 18.2.11.

Check the phone line. Plug a phone into the line and check for a dial tone. If a phone is not
available then use a line test tool. The phone line connection is good.
Y N
Inform the customer to have the line checked by the telephone company.

Install new parts in the following order:

• Telephone cable.
• Fax Board, REP 18.2.11.
• IP Board, REP 18.2.6.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
20-327-00, 20-331-00 to 20-341-00 2-136 Xerox WorkCentre 6655 Color Multifunction Printer
20-342-00 Error Accessing File on a NV Device 20-345-00 FaxPort1 Modem Failure
20-342-00 Error accessing file on a NV device 20-345-00 FaxPort1ModemFailure

NOTE: Status code 20-570 is raised with this fault code. NOTE: Status code 20-595 is raised with this fault code.

Initial Actions Initial Actions

• Backup the phone book and customer settings, refer to dC361 Save and Restore. • Backup the phone book and customer settings, refer to dC361 Save and Restore.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Go to SCP 6 and complete the Final Actions. Go to SCP 6 and complete the Final Actions.

Clear Fax NVM. Go to dC301 NVM Initialization, select Embedded Fax NVM initialization and Clear Fax NVM. Go to dC301 NVM Initialization, select Embedded Fax NVM initialization and
perform the routine, All Data. The error persists. perform the routine, All Data. The error persists.
Y N Y N
Go to SCP 6 and complete the Final Actions. Go to SCP 6 and complete the Final Actions.

Perform GP 9 to reload system software. Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-137 20-342-00, 20-345-00
20-701-00 Phonebook Download Failed 20-710-00, 20-711-00 Fax Card Overwrite Errors
20-701-00 Phonebook download failed 20-710-00 IIO Error occurred on fax card when overwriting the job

Initial Actions 20-711-00 ODIO Error on fax card when overwriting compact flash memory
WARNING NOTE: Status code 19-506 is raised with these fault codes.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Initial Actions
Moving parts can cause injury. • Check that the Fax Board is correctly grounded.
• Check that the Fax Board is correctly grounded.
Procedure
Procedure WARNING
Perform GP 9 to reload system software. The error persists.
Ensure that the electricity to the machine is switched off while performing tasks that do
Y N
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Go to SCP 6 and complete the Final Actions.
Moving parts can cause injury.
Cycle system power. The error persists.
Reseat USB connections between the Fax and IP Boards. The error persists.
Y N
Y N
Go to SCP 6 and complete the Final Actions.
Go to SCP 6 and complete the Final Actions.

Reseat USB connections between the Fax and IP Boards. The error persists.
Clear Fax NVM. Go to dC301 NVM Initialization, select Embedded Fax NVM initialization and
Y N
perform the routine, All Data. The error persists.
Go to SCP 6 and complete the Final Actions.
Y N
Go to SCP 6 and complete the Final Actions.
Install new parts as necessary:
Install a new IP Board, REP 18.2.6. • Fax Board, REP 18.2.6.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
20-701-00, 20-710-00, 20-711-00 2-138 Xerox WorkCentre 6655 Color Multifunction Printer
22-300-05 to 22-309-04 Other Network Faults 24 22-310-04 to 22-318-04 Other Network Faults 25
22-300-05 Image Complete fault 22-310-04 Extended Job Service fault

22-300-10 DVMA Transfer fault 22-311-04 Sequencer response fault

22-300-16 Clock overflow fault. Status code 03-561 is raised with this fault code 22-314-04 Module Registration Error

22-301-05 Scan resource fault 22-315-04 Module completion fault. Status code 22-503 is raised with this fault code.

22-309-04 No Accepts received fault. Five consecutive 22-309-04 will cause 22-319-04. 22-316-04 Job Paper Tray fault. Status code 22-504 is raised with this fault code.

Procedure 22-317-04 Job Finishing fault

WARNING 22-318-04 Job IOT fault
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Procedure
Moving parts can cause injury.
Cycle system power. The error persists.
WARNING
Y N Ensure that the electricity to the machine is switched off while performing tasks that do
Go to SCP 6 and complete the Final Actions. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Perform GP 9 to reload system software. Cycle system power. The error persists.
Y N
Go to SCP 6 and complete the Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-139 22-300-05 to 22-309-04, 22-310-04 to 22-318-04
22-319-04 IOT Integrity Problem While Printing a Job 22-320-00, 22-321-00 Scan to File Fault
22-319-04 IOT Integrity problem while printing a job 22-320-00 Scan to File install fault

This fault can result in two ways: 22-321-00 Scan to File remove fault
1. IOT cycles down and back up 10 times without printing a page within the same job caus-
ing a 22-319-04. Procedure
2. 5 consecutive 22-309-04 will also cause a 22-319-04. Refer to 22-309-04 for more infor- WARNING
mation.
Ensure that the electricity to the machine is switched off while performing tasks that do
Procedure not need electricity. Disconnect the power cord. Electricity can cause death or injury.
WARNING Moving parts can cause injury.
Cycle system power. The error persists.
Ensure that the electricity to the machine is switched off while performing tasks that do
Y N
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Go to SCP 6 and complete the Final Actions.

Cycle system power. The error persists.

Perform GP 9 to reload system software.
Y N
Go to SCP 6 and complete the Final Actions.

Verify that power is supplied directly from a wall outlet and the outlet provides adequate
power. Power is OK.
Y N
Connect the printer to an adequate power source.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
22-319-04, 22-320-00, 22-321-00 2-140 Xerox WorkCentre 6655 Color Multifunction Printer
22-321-04 RS422l ResponseTimeOutError 22-322-00 to 22-327-00 Service Faults
22-321-04 RS422l ResponseTimeOutError (Config Mismatch) 22-322-00 LAN FAX install fault

NOTE: Status code 22-501 is raised with this fault code. 22-323-00 LAN FAX remove fault

Initial Actions 22-324-00 Scan to Email install fault

• Check machine configuration.
22-325-00 Scan to Email remove fault
Procedure
22-326-00 IFAX install Fault
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do 22-327-00 IFAX remove Fault
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Procedure
Cycle system power. The error persists. WARNING
Y N
Ensure that the electricity to the machine is switched off while performing tasks that do
Go to SCP 6 and complete the Final Actions.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Perform GP 9 to reload system software.
Cycle system power. The error persists.
Y N
Go to SCP 6 and complete the Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-141 22-321-04, 22-322-00
22-328-00 Incomplete System Information 22-330-00 Supplies Plan Activation Code Entry Locked
22-328-00 Incomplete System Information. Accounting Service Data is corrupt 22-330-00 Supplies Plan Activation Code entry locked; too many attempts

NOTE: Status code 22-564 is raised with this fault code. Procedure
Procedure WARNING
WARNING Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Cycle system power. The error persists.
Moving parts can cause injury.
Y N
Cycle system power. The error persists.
Go to SCP 6 and complete the Final Actions.
Y N
Go to SCP 6 and complete the Final Actions.
Obtain a new PIN and try again in 24 hours.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
22-328-00, 22-330-00 2-142 Xerox WorkCentre 6655 Color Multifunction Printer
22-330-01 to 22-332-00 Queue Timed Out 22-335-00 to 22-340-00 Service Faults
22-330-01 List Jobs Request Timed out between UI and CCS 22-335-00 JBA install fault

22-330-02 Queue to NC print Timeout 22-336-00 JBA Remove Fault

22-330-03 Queue to Scan to file Timeout 22-337-00 ODIO install fault

22-330-04 Queue to FaxSend Timeout 22-338-00 ODIO remove fault

22-330-05 Queue to DC JOB service Timeout 22-339-00 IIO install fault

22-330-06 Queue to Scan to distribution Timeout 22-340-00 IIO remove fault

22-332-00 Plan Conversion entry locked; too many attempts Procedure

WARNING
Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do
WARNING not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Cycle system power. The error persists.
Moving parts can cause injury. Y N
Cycle system power. The error persists. Go to SCP 6 and complete the Final Actions.
Y N
Go to SCP 6 and complete the Final Actions. Perform GP 9 to reload system software.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-143 22-330-01 to 22-332-00, 22-335-00
22-350-01, 22-350-02 Software Detects Non-Valid Xerox 22-351-01 to 22-351-03 SOK Write Failure
SOK 22-351-01 Software option key 1 Write Failure
22-350-01 Software detected non-valid Xerox software option key 1
22-351-02 Software option key 2 Write Failure
22-350-02 Software detected non-valid Xerox software option key 2 or 3
22-351-03 Software option key 3 Write Failure
Procedure
Procedure
WARNING
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Cycle system power. The error persists.
Y N
Y N
Go to SCP 6 and complete the Final Actions.
Go to SCP 6 and complete the Final Actions.
Ignore all requested options from the software option key (SOK).
Ignore all requested options from the software option key (SOK).

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
22-350-01, 22-350-02, 22-351-01 to 22-351-03 2-144 Xerox WorkCentre 6655 Color Multifunction Printer
22-352-00, 22-352-01 Serial Number Lost/Missing 22-360-00 Service Plan Inconsistent
22-352-00 Serial number lost/missing. A password routine may be required to write serial num- 22-360-00 Service Plan inconsistent. A Password routine may be required to write Service
ber to machine. Plan/Region to machine.

22-352-01 Password routine required to write serial number to machine. NOTE: Status code 22-581 is raised with these fault codes.

NOTE: Status code 22-557 is raised with these fault codes. Procedure
WARNING
Initial Actions
Ensure that the electricity to the machine is switched off while performing tasks that do
NOTE: The SD Card is also referred to as the product enablement key. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
• Check that the SD Card is present and fully inserted in the IP Board.
Cycle system power. The error persists.
• Check fault history for 03-xxx fault codes. Go to the appropriate RAP.
Y N
Go to SCP 6 and complete the Final Actions.
Procedure
WARNING Install hardware removed before fault was raised. The error persists.
Y N
Ensure that the electricity to the machine is switched off while performing tasks that do
Go to SCP 6 and complete the Final Actions.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Recover using SD Card (PagePack only).
Check the serial number reported on the Control Panel matches the chassis label. The num-
bers are different.
Y N
Go to SCP 6 and complete the Final Actions.

Cycle system power. The error persists.

Y N
Go to SCP 6 and complete the Final Actions.

Use dC132 to restore the serial number.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-145 22-352-00, 22-352-01, 22-360-00
22-370-00 Unable to Communicate with XSA Database 22-371-00, 22-372-00 Fax Application Registration Error
22-370-00 Unable to communicate with XSA database 22-371-00 Fax Application Registration Error. Status code 22-566 is raised with this fault code

NOTE: Status code 22-562 is raised with this fault code. 22-372-00 Fax Application Un-Registration Error. Status code 22-567 is raised with this fault
code
Procedure
WARNING Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do WARNING
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Cycle system power. The error persists. Moving parts can cause injury.
Y N
Cycle system power. The error persists.
Go to SCP 6 and complete the Final Actions.
Y N
Go to SCP 6 and complete the Final Actions.
Perform GP 9 to reload system software.
Reseat USB connections on the Fax and IP boards. The error persists.
Y N
Go to SCP 6 and complete the Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
22-370-00, 22-371-00, 22-372-00 2-146 Xerox WorkCentre 6655 Color Multifunction Printer
22-407-00 to 22-421-00 Embedded Fax Faults 22-701-04 Module Completion Fault
22-407-00 Install Embedded Fax Fault 22-701-04 Module completion fault

22-417-00 Removal Embedded Fax Fault Procedure

22-419-00 Enable Embedded Fax Fault
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
22-421-00 Disable Embedded Fax Fault not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Procedure Cycle system power. The error persists.
Y N
WARNING Go to SCP 6 and complete the Final Actions.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Reseat USB connections on the Fax and IP boards. The error persists.
Moving parts can cause injury. Y N
Cycle system power. The error persists. Go to SCP 6 and complete the Final Actions.
Y N
Go to SCP 6 and complete the Final Actions. Perform GP 9 to reload system software.

Reseat USB connections on the Fax and IP boards. The error persists.
Y N
Go to SCP 6 and complete the Final Actions.

Perform GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-147 22-407-00, 22-701-04
22-720-00, 22-721-00 Service Registry Errors 22-750-04 to 22-755-17 Configuration Mismatch RAP
22-720-00 Service Registry Bad data / Corrupted 22-750-04 Output Device Configuration Mismatch

22-721-00 Triple A gets no response from SRS 22-750-17 Accessory Card Configuration Mismatch

NOTE: Status code 16-503 is raised with these fault codes. 22-751-04 Paper Tray Configuration Mismatch

Procedure 22-754-17 UI Config change fault

WARNING
22-755-17 RDT Configuration Mismatch
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Initial Actions
Cycle system power. The error persists. Check option installation. Reseat all connections between the option and printer.
Y N
Go to SCP 6 and complete the Final Actions. Procedure
Perform GP 9 to reload system software.
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Y N
Go to SCP 6 and complete the Final Actions.

Perform GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
22-720-00, 22-721-00, 22-750-04 to 22-755-17 2-148 Xerox WorkCentre 6655 Color Multifunction Printer
24-340-00 IOT Firmware Error 24-362-00 IOT Start Image Marking Timeout
24-340-00 IOT Firmware Error 24-362-00 IOT Start Image Marking Timeout

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Go to SCP 6 and complete the Final Actions. Go to SCP 6 and complete the Final Actions.

Check the MCU Board firmware version. The firmware version is current. Replace the MCU Board, REP 18.1.11. The error persists.
Y N Y N
Upgrade the MCU Board firmware. Perform GP 9 to reload system software. Go to SCP 6 and complete the Final Actions.

Replace the MCU Board, REP 18.1.11. Replace the IP Board, REP 18.2.6.
Go to SCP 6 and complete the Final Actions.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-149 24-340-00, 24-362-00
24-920-00 IOT Standard Stacker Full
24-920-00 IOT Standard Stacker Full

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Y N
Go to SCP 6 and complete the Final Actions.

Execute dC330 code 071-105, and check the Full Stack Sensor operation. The test fails.
Y N
Replace the MCU Board, REP 18.1.11.

Check the connection between the Full Stack Sensor and the MCU Board (P/J154 and P/J15).
The connections are good.
Y N
Reattach the connections securely.

Check the continuity of the cables between P/J154 and P.J15 that connect the Full Stack Sen-
sor and the MCU Board. The continuity is good.
Y N
Replace the Sensor Harness Assembly.

Verify the power to the Full Stack Sensor is about +5 VDC by measuring the voltage between
the MCU Board ground and P/J15 pin 4. The voltage is good.
Y N
Refer to OF 19 +5 VDC Power.

Replace the Full Stack Sensor, REP 17.1.10.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
24-920-00 2-150 Xerox WorkCentre 6655 Color Multifunction Printer
41-340-00 to 41-414-00 IOT NVM Error 41-388-00 Marking Logic Fail
41-340-00 IOT NVM-Verify Data Read error 41-388-00 Marking Logic Fail

41-342-00 F/W Exception Handling Error NOTE: Status codes 03-561 and 04-561 are raised with this fault code.

41-400-00 IOT NVM-Read NVM failure version Procedure

WARNING
41-402-00 IOT NVM-Read the data write copy failed area at three locations Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
41-404-00 IOT NVM-Ack-time error 1byte Read
Moving parts can cause injury.
CAUTION
41-406-00 IOT NVM-Ack-time error Continuous Read
Do not replace the MCU and IP Boards at the same time. Replace or check the IP Board first,
41-408-00 IOT NVM-Write on the device can not start Busy then cycle system power before replacing the MCU Board.
Cycle system power. The error persists.
41-410-00 IOT NVM-Can not Write (Verify error) Y N
Go to SCP 6 and complete the Final Actions.
41-412-00 IOT NVM-Write process is completed without
Check the wiring and connections between the MCU and IP Boards. The error persists.
41-414-00 IOT NVM-Write retry processing over Y N
Go to SCP 6 and complete the Final Actions.
NOTE: Status codes 03-561 and 04-563 are raised with this fault code.
Perform a Forced AltBoot GP 9 to reload system software. The error persists.
Procedure Y N
WARNING Go to SCP 6 and complete the Final Actions.
Ensure that the electricity to the machine is switched off while performing tasks that do
Install new components as necessary:
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. • MCU Board, REP 18.1.11.
CAUTION • IP Board, REP 18.2.6.
Do not replace the MCU and IP Boards at the same time. Replace or check the IP Board first,
then cycle system power before replacing the MCU Board.
Cycle system power. The error persists.
Y N
Go to SCP 6 and complete the Final Actions.

Check the wiring and connections between the MCU and IP Boards. The error persists.
Y N
Go to SCP 6 and complete the Final Actions.

Install new components as necessary:

• MCU Board, REP 18.1.11.
• IP Board, REP 18.2.6.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-151 41-340-00 to 41-414-00, 41-388-00
42-313-00 Side Cooling Fan Failure 42-324-00 Sub (Paper Transport) Motor Failure
42-313-00 Side Cooling Fan Fail 42-324-00 Sub motor failure

NOTE: Status codes 03-561 and 04-563 are raised with this fault code. NOTE: Status codes 03-561 and 04-563 are raised with this fault code.

Initial Actions Procedure

• Check for accumulations of dust, debris or other obstructions preventing Fan rotation. WARNING
• Check the Fan harness for damage at the Side Cover hinge point. Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Procedure Moving parts can cause injury.
WARNING Cycle system power. The error persists.
Y N
Ensure that the electricity to the machine is switched off while performing tasks that do
Go to SCP 6 and complete the Final Actions.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Execute dC330 code 071-004 to check the Paper Transport Motor rotation. The motor fails
Manually check the Fan rotation. The Fan rotates freely. to rotate properly.
Y N Y N
Repair or replace the Fan. Replace the MCU Board, REP 18.1.11.

Execute dC330 code 042-001 to test Main Fan rotation. The fan rotates. Check the connection between the Paper Transport Motor and the LVPS, and the connection
Y N between the Paper Transport Motor and MCU Board (P/J312, P/J509, P/J172, and P/J17).
Replace the fan, and re-execute dC330 code 042-001. The error persists. The connections are good.
Y N Y N
Go to SCP 6 and complete the Final Actions. Secure the connections for P/J312, P/J509, P/J172, and P/J17.

Continue with the procedure. Check the continuity of the cables connected between the Paper Transport Motor and the
MCU Board (P/J172 and P/J17). The continuity is good.
Check the Fan wiring and connection P/J503 between the Fan and LVPS. The connection is Y N
good. Replace the Drive Harness Assembly, REP 18.4.2.
Y N
Re-seat loose Fan harness connector. Check the continuity of the cables connected between the Paper Transport Motor and the
LVPS (P/J312 and P/J509). The continuity is good.
Check the connections P/J501 and P/J29 between the LVPS and the MCU Board. The con- Y N
nections are good. Replace the Top Harness Assembly, REP 18.4.5.
Y N
Reconnect P/J501 and P/J29. Close the interlock switch(es), and check if the voltage between the LVPS ground and the P/
J509 pin 3 is about +24 VDC. The voltage is correct.
Check the continuity of each cable of P/J501 and P/J29 between the LVPS and the MCU Y N
Board. The continuity is good. Replace the LVPS, REP 18.3.2.
Y N
Replace the Top Harness Assembly. Replace the Drive Assembly, REP 3.1.1.

Replace the MCU Board.

Go to SCP 6 and complete the Final Actions.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
42-313-00, 42-324-00 2-152 Xerox WorkCentre 6655 Color Multifunction Printer
42-325-00 Motor Failure 42-338-00 IP Fan Fail
42-325-00 Main motor failure 42-338-00 IP (controller) fan fails to start during power-up, controller temperature is high

NOTE: Status codes 03-561 and 04-563 are raised with this fault code. NOTE: Status code 03-565 is raised with this fault code.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Go to SCP 6 and complete the Final Actions. Go to SCP 6 and complete the Final Actions.

Execute dC330 code 071-001 to check the Main Motor rotation. The motor fails to rotate Execute dC330 code 042-200 to test IP Fan rotation. The error persists.
properly. Y N
Y N Replace the MCU Board, REP 18.1.11.
Replace the MCU Board, REP 18.1.11.
Manually check the Fan rotation. The Fan rotates freely.
Check the connection between the Main Motor and the LVPS, and the connection between the Y N
Main Motor and MCU Board (P/J311, P/J509, P/J171, and P/J17). The connections are Reinstall the Fan, REP 18.2.16.
good.
Y N Check the Fan wiring and connections P/J4331 and P/J433 between the Fan and IIT MCU.
Secure the connections for P/J311, P/J509, P/J171, and P/J17. The connection is good.
Y N
Check the continuity of the cables connected between the Main Motor and the MCU Board (P/ Re-seat loose Fan harness connector.
J171 and P/J17). The continuity is good.
Y N Check the continuity of each cable of P/J4331 and P/J433 between the Fan and the IIT MCU
Replace the Drive Harness Assembly, REP 18.4.2. Board. The continuity is good.
Y N
Check the continuity of the cables connected between the Main Motor and the LVPS (P/J311 Replace the Top Harness Assembly.
and P/J509). The continuity is good.
Y N Check the connections P/J390 and P/J432 between the IP (ESS) Board and the IIT MCU
Replace the Top Harness Assembly, REP 18.4.5. Board. The connections are good.
Y N
Close the interlock switch(es), and check if the voltage between the LVPS ground and the P/ Reconnect P/J390 and P/J432.
J509 pin 1 is about +24 VDC. The voltage is correct.
Y N Check the continuity of the cable P/J390 pin B16 and P/J432 pin B3 (IP FAN ON signal), and
Replace the LVPS, REP 18.3.2. the cable P/J390 pin B12 and P/J432 pin B7 (IP FAN FAIL signal) between the IP Board and
the IIT MCU Board. The continuity is good.
Replace the Drive Assembly, REP 3.1.1. Y N
Replace the Controller IIT SU Harness Assembly.

Replace the Fan. The error persists.

Y N
Go to SCP 6 and complete the Final Actions.

Install new components as necessary:

• IIT MCU Board, REP 18.2.2.
• IP Board, REP 18.2.6.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-153 42-325-00, 42-338-00
 A
42-700-00 Over Heat Stop Replace the LVPS. The error persists.
Y N
42-700-00 Over heat stop
Perform SCP 6 Final Actions.

NOTE: Status code 03-565 is raised with this fault code.

Replace the MCU Board, REP 18.1.11.
Procedure
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
Do not touch the Fuser while it is hot.
Cycle the system power. The error persists.
Y N
Perform SCP 6 Final Actions.

Check the Fuser life count. Fuser life count is good (not at or near end of life).
Y N
Replace the Fuser, REP 7.1.1.

Check the Fuser and drawer connector for proper installation without bent pins, or foreign
objects. The installation is good.
Y N
Correct installation problems, reassemble and perform SCP 6 Final Actions.

Check the connection between the Fuser Assembly and the MCU Board, and the connection
between the Fuser Assembly and the LVPS. The connections are good.
Y N
Reattach the connections securely.

Check the connections between the LVPS and the MCU Board. The connections are good.
Y N
Reattach the connections securely.

Check the continuity of the cables in the Heater Harness Assembly. The continuity is good.
Y N
Replace the Heater Harness Assembly.

Check the continuity of the cables in the Top Harness Assembly. The continuity is good.
Y N
Replace the Top Harness Assembly.

Verify the Fuser power is about +5 VDC by measuring the voltage between the MCU Board
ground and the P/J28 pin 2. The voltage is correct.
Y N
Refer to OF 19 +5 VDC Power.

Replace the Fuser Assembly. The error persists.

Y N
Perform SCP 6 Final Actions.
A
Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
42-700-00 2-154 Xerox WorkCentre 6655 Color Multifunction Printer
45-301-00 to 45-305-00 IOT I/F Error 45-310-00 Image Ready NG
45-301-00 I/F Ack Unreceived High 45-310-00 Image preparation failure of Controller

45-302-00 I/F Ack Unreceived Low NOTE: Status codes 03-561 and 04-563 are raised with this fault code.

45-303-00 I/F Received Buffer Overflow Procedure

WARNING
45-304-00 I/F Send Buffer High Overflow Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
45-305-00 I/F Send Buffer Low Overflow
Moving parts can cause injury.
Cycle system power. The error persists.
NOTE: Status codes 03-561 and 04-566 are raised with this fault code.
Y N
Procedure Go to SCP 6 and complete the Final Actions.
WARNING Check the connections between the IOT and Controller. The connections are good.
Ensure that the electricity to the machine is switched off while performing tasks that do Y N
not need electricity. Disconnect the power cord. Electricity can cause death or injury. Re-seat loose connectors and check for presence of foreign material in backplane and
Moving parts can cause injury. connectors.
CAUTION
Do not replace the MCU and IP Boards at the same time. Replace or check the IP Board first, Go to SCP 6 and complete the Final Actions.
then cycle system power before replacing the MCU Board. Simultaneous replacement of IP
and MCU Boards will make the printer inoperable.
Cycle system power. The error persists.
Y N
Go to SCP 6 and complete the Final Actions.

Check the wiring and connections between the MCU and IP Boards. The wiring is good.
Y N
Re-seat loose connectors or install new components as necessary:
• MCU Board, REP 18.1.11.
• IP Board, REP 18.2.6.

Go to SCP 6 and complete the Final Actions.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-155 45-301-00 to 45-305-00, 45-310-00
45-311-00 Controller Comm Fail 46-310-00 IOT HVPS Error
45-311-00 Communication failure between IOT and Controller 46-310-00 IOT HVPS error

NOTE: Status codes 03-561 and 04-565 are raised with this fault code. Procedure
Procedure WARNING
WARNING Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Cycle system power. The error persists.
Moving parts can cause injury.
Y N
Cycle system power. The error persists.
Go to SCP 6 and complete the Final Actions.
Y N
Go to SCP 6 and complete the Final Actions.
Check the connection between the Transfer HVPS Board and the Development HVPS Board
(P/J1821 and P/J182). The connections are good.
Check LED CR7 (MCU 3.3V). CR7 is on.
Y N
Y N
Reattach the connections securely.
Measure fuse F1. Fuse measures less than 1 ohm.
Y N
Check the continuity of the cables on the harness connecting the Transfer HVPS Board and
Replace MCU Board.
the Development HVPS Board (P/J1821 and P/J182). The continuity is good.
Y N
Check LVPS fuse.
Replace the HVPS Harness Assembly.

Check LED CR8 (5V). CR8 is on. Check the connection between the Development HVPS Board and the MCU Board (P/J181
Y N
and P/J18). The connections are good.
Check conduction between MCU +5V (Test Point 4) and FG. Resistance between Test
Y N
Point 4 and FG is less than 1 ohm.
Reattach the connections securely.
Y N
Check LVPS fuse.
Replace the MCU-HVPS Flat Flex Cable. The error persists.
Y N
Remove connector one-by-one from MCU board. Resistance from Test Point 4 to FG is Go to SCP 6 and complete the Final Actions.
greater than 1 ohm.
Y N Replace the Transfer HVPS Board. The error persists.
Try another connector. Y N
Go to SCP 6 and complete the Final Actions.
Find and repair any earth ground fault located on the harness causing low resistance
measurement. Replace the Development HVPS Board. The error persists.
Y N
Go to SCP 6 and complete the Final Actions. Go to SCP 6 and complete the Final Actions.

Replace the MCU Board, REP 18.1.11.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
45-311-00, 46-310-00 2-156 Xerox WorkCentre 6655 Color Multifunction Printer
 A
61-020-00 to 61-340-00 ROS Error Perform SCP 6 Final Actions.

61-020-00 ROS Rotation fail

61-323-00 Polygon Motor Ready check fail

61-327-00 ROS Warm up fail

61-340-00 ROS LD fail

NOTE: Status codes 03-561 and 06-515 are raised with this fault code.

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions

Check the connection between the Laser Unit and the MCU Board, and the connection
between the Laser Unit and the PWBA LVPS (P/J36, P/J11, and P/J43). The connections
are good.
Y N
Secure the connections.

Check the continuity of the cables on P/J43 and P/J431 between the LVPS and the Laser Unit.
The cables are continuous.
Y N
Replace the Top Harness Assembly, REP 18.4.5.

Close the interlock switches and check if the voltage between the LVPS ground and the P/J43
pin 2 is about +5 VDC. The voltage is correct.
Y N
Replace the LVPS, REP 18.3.2.

Close the interlock switches and check if the voltage between the MCU Board ground and the
P/J36 pin 1 is about +24 VDC. The voltage is correct.
Y N
Refer to OF 18 +24 VDC Power.

Check if the voltage between the MCU Board ground and the P/J11 pin 1 is about +3.3 VDC.
The voltage is correct.
Y N
Refer to OF 20 +3.3 VDC Power.

Replace the Laser Unit, REP 2.1.1. The error is fixed.

Y N
Replace the MCU Board, REP 18.1.11.

A
Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-157 61-020-00 to 61-340-00
61-320-00 Polygon Motor Fail 61-370-00 IOT ROS Failure
61-320-00 IOT reports Polygon Motor failure 61-370-00 IOT ROS Failure

NOTE: Status codes 03-561 and 06-515 are raised with this fault code. NOTE: Status codes 03-561 and 06-515 are raised with this fault code.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Cycle system power. The error persists. Cycle system power. The error persists.
Y N Y N
Go to SCP 6 and complete the Final Actions. Perform SCP 6 Final Actions

Replace the Polygon Motor. Check the connection between the Laser Unit and the MCU Board, and the connection
between the Laser Unit and the PWBA LVPS (P/J36, P/J11, and P/J43). The connections
are good.
Y N
Secure the connections.

Check the continuity of the cables on P/J43 and P/J431 between the LVPS and the Laser Unit.
The cables are continuous.
Y N
Replace the Top Harness Assembly, REP 18.4.5.

Close the interlock switches and check if the voltage between the LVPS ground and the P/J43
pin 2 is about +5 VDC. The voltage is correct.
Y N
Replace the LVPS, REP 18.3.2.

Close the interlock switches and check if the voltage between the MCU Board ground and the
P/J36 pin 1 is about +24 VDC. The voltage is correct.
Y N
Refer to OF 18 +24 VDC Power.

Check if the voltage between the MCU Board ground and the P/J11 pin 1 is about +3.3 VDC.
The voltage is correct.
Y N
Refer to OF 20 +3.3 VDC Power.

Replace the Laser Unit, REP 2.1.1. The error is fixed.

Y N
Replace the MCU Board, REP 18.1.11.

Perform SCP 6 Final Actions.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
61-320-00, 61-370-00 2-158 Xerox WorkCentre 6655 Color Multifunction Printer
 A
62-310-00 to 62-393-00 IIT Scan Error Replace the IP Board, REP 18.2.6.

62-310 IIT/CCS Communication Failure

62-311-00 IISS LOGIC Fail. Status code 03-557 is raised with this fault code.

62-317-00 IIT Video Over-run

62-318-00 IIT Scanning Timing Error

62-319-00 PLL Lock Time Out Error

62-320-00 Scanning Error

62-321-00 Unexecutable Error

62-322-00 S/W Parameter Error

62-345-00 IISS EEPROM Fail

62-360-00 Carriage Home Position Error

62-362-00 X Hard Fail

62-371-00 IIT Failure Lamp Error

62-380-00 AGC Fail

62-386-00 AOC Fail

62-389-00 Carriage Over Run Fail. Status code 14-517 is raised with these fault codes

62-393-00 CcdAsic Communication Error

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Cycle system power. The error persists.
Y N
Go to SCP 6 and complete the Final Actions.

Check connections and wiring between the IIT Assembly and IP Board (P/J1401 and P/
J1501). The connections and wiring are good.
Y N
Repair the wiring or reattach the connectors so they are secure.

Replace the IIT Assembly. The error persists.

Y N
Perform SCP 6 Final Actions.
A
Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-159 62-310-00 to 62-393-00
62-316-00 DADF Motor Fail 62-790-00 PreIPS XFail
62-316-00 Dadf Motor Fail 62-790-00 PreIPS XFail. Bank note detected.

NOTE: Status code 14-517 is raised with this fault code. Procedure
Procedure WARNING
WARNING Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Ensure that the electricity to the machine is switched off while performing tasks that do
Moving parts can cause injury.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Cycle system power. The error persists.
Moving parts can cause injury.
Y N
Cycle system power. The error persists.
Go to SCP 6 and complete the Final Actions.
Y N
Go to SCP 6 and complete the Final Actions.
Check connections and wiring between the IIT Assembly and IP Board (P/J1401 and P/
J1501). The connections and wiring are good.
Check connections and wiring between the DADF Assembly and IP Board. The wiring is
Y N
good.
Repair the wiring or reattach the connectors so they are secure.
Y N
Repair or reseat wiring as needed.
Replace the IIT Assembly. The error persists.
Y N
Install new components as necessary:
Perform SCP 6 Final Actions.
• DADF Assembly, REP 51.1.1
• IP Board, REP 18.1.11 Replace the IP Board, REP 18.2.6.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
62-316-00, 62-790-00 2-160 Xerox WorkCentre 6655 Color Multifunction Printer
70-099-00 I/F IOTFED Communication 71-101-00 Tray1 Misfeed Jam
70-099-00 I/F IOTFED Communication 71-101-00 Tray1 Misfeed Jam, Status code 07-501 is raised with this fault code

NOTE: Status codes 03-561 and 92-530 are raised with this fault code. Initial Actions
Initial Actions • Check media condition.
• Check for obstructions in the media path.
• Lock the Optional Feeder to the printer.
• Check Tray 1 media guides and lift operation.
• Reseat the IOT on the Optional Feeder.
• Check Feed Roller condition.
• Check for obstructions blocking the option connections.
• Check actuator condition.
Procedure
Procedure
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
WARNING
supply while performing tasks that do not need electricity. Electricity can cause death or Switch off the electricity to the machine. Disconnect the power cord from the customer
injury. Moving parts can cause injury. supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
Check the Nudger, Feed, and Retard Rollers for excessive wear or contamination. The roll-
Use safe handling procedures when removing the module. Refer to GP 20. The module
ers are undamaged and clean.
is heavy.
Y N
Cycle system power. The error persists. Clean or replace the rollers.
Y N
Go to SCP 6 and complete the Final Actions. Use dC330 code 071-103 to test the Registration Sensor. The sensor signal changes.
Y N
Remove the printer from the Optional Feeder. Check feeder option connector continuity. The Check the connection between the HVPS and MCU Board. The connection is secure.
harnesses are undamaged. Y N
Y N Secure the connection.
Replace the damaged option harness.
Replace the HVPS, REP 18.1.12.
lnstall new components as necessary:
1. Feeder Board, REP 10.1.10 Use dC330 code 071-008 to test the Feed Clutch. The clutch activates.
2. MCU Board, REP 18.1.11 Y N
Replace the Feed Clutch, REP 15.2.6.

Use dC330 code 071-001 to test the Main Motor on the Drive Assembly. The motor rotates.
Y N
Replace the Main Motor on the Main Drive Assembly, REP 3.1.1.

Replace the Feed Rollers, REP 9.1.96.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-161 70-099-00 , 71-101-00
71-215-00 Tray 1 Feeder Composition Error 72-098-00 Option Feeder Mode
71-215-00 Tray 1 Feeder Composition Error 72-098-00 Option Feeder2 Mode

NOTE: Status codes 03-561 and 72-215 are raised with this fault code. NOTE: Status codes 03-561 and 77-098 are raised with this fault code.

Procedure Procedure
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
WARNING WARNING
Use safe handling procedures when removing the module. Refer to GP 20. The module Use safe handling procedures when removing the module. Refer to GP 20. The module
is heavy. is heavy.
Verify product and option compatibility, The Tray is supported. Cycle system power. The error persists.
Y N Y N
Install the correct Tray. Go to SCP 6 and complete the Final Actions.

Perform GP 9 to reload system software. Reinstall the Tray and test. The error persists. Remove the Optional Feeder, then obtain the appropriate system software set and perform GP
Y N 9 to reload system software. Reinstall the Optional Feeder and test. The error persists.
Perform SCP 6 Final Actions. Y N
Perform SCP 6 Final Actions.
Perform a Forced AltBoot GP 9 to reload system software.
Replace the Feeder Board, REP 10.1.10 .

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
71-215-00, 72-098-00 2-162 Xerox WorkCentre 6655 Color Multifunction Printer
72-101-00 Tray2 Misfeed Jam 72-102-00 Feeder Path 2 Sensor On Jam (RC2)
72-101-00 Path2 Sensor on Jam. 72-102-00 Feeder Path 2 Sensor On Jam

NOTE: Status code 07-502 is raised with this fault code. NOTE: Status code 07-508 is raised with this fault code.

Initial Actions Initial Actions

• Check media condition. 1. Check for obstructions in the media path.
• Check for obstructions in the media path. 2. Check Optional Feeder Path Sensor actuator condition.
• Check Tray 2 media guides and lift operation.
• Check Feed and Take Away Roller condition. Procedure
• Check actuator condition. WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
Procedure supply while performing tasks that do not need electricity. Electricity can cause death or
WARNING injury. Moving parts can cause injury.
Check the Nudger, Feed, and Separator Rollers for excessive wear or contamination. The
Switch off the electricity to the machine. Disconnect the power cord from the customer
rollers are undamaged and clean.
supply while performing tasks that do not need electricity. Electricity can cause death or
Y N
injury. Moving parts can cause injury.
Clean or replace the rollers.
Check the Nudger, Feed, and Retard Rollers for excessive wear or contamination. The roll-
ers are undamaged and clean.
Use dC330 code 071-103 to test the Registration Sensor. The sensor signal changes.
Y N
Y N
Clean or replace the rollers. Check the connection between the HVPS and MCU Board. The connection is secure.
Y N
Use dC330 code 071-020 to test the Tray 2 Feed Solenoid. The clutch activates.
Secure the connection.
Y N
Replace the Feed Clutch, REP 10.1.8. Replace the HVPS, REP 18.1.12.

Use dC330 code 071-010 to test the Tray 2 Registration. The clutch activates. Use dC330 code 071-119 to test the Tray 2 Path Sensor. The sensor signal changes.
Y N Y N
Replace the Registration Clutch, REP 10.2.2.
Replace the Path Sensor.

Use dC330 code 071-014 to test the Tray 2 Feed Motor. The motor rotates. Use dC330 code 071-020 to test the Tray 2 Feed Solenoid. The clutch activates.
Y N
Y N
Replace the Feed Motor, REP 10.1.9. Replace the Feed Clutch, REP 10.1.8.

Replace the Option Feeder Feed Assembly, REP 10.2.1.

Use dC330 code 071-010 to test the Tray 2 Registration. The clutch activates.
Y N
Replace the Registration Clutch, REP 10.2.2.

Use dC330 code 071-014 to test the Tray 2 Feed Motor. The motor rotates.
Y N
Replace the Feed Motor, REP 10.1.9.

Replace the Option Feeder Feed Assembly, REP 10.2.1.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-163 72-101-00, 72-102-00
72-211-00 IOT Option Feeder2 Failure 72-215-00 Tray 2 Feeder Composition Error
72-211-00 IOT Option Feeder2 Failure 72-215-00 Tray 2 Feeder Composition Error

NOTE: Status codes 03-561 and 77-216 are raised with this fault code. NOTE: Status codes 03-561 and 77-216 are raised with this fault code.

Procedure Initial Actions

WARNING • Check Optional Feeder part number.
Ensure that the electricity to the machine is switched off while performing tasks that do • Check Optional Feeder installation.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Procedure
Cycle system power. The error persists. WARNING
Y N
Switch off the electricity to the machine. Disconnect the power cord from the customer
Perform SCP 6 Final Actions
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
Check the connections P/J27, DP/DF271, and P/J419 between the 550 Option Feeder Board
and MCU Board. The connections are good. Cycle system power. The error persists.
Y N Y N
Secure the connections. Perform SCP 6 Final Actions.

Check the continuity of the cables on P/J419 and DP/DJ271 between the 550 Option Feeder lnstall new components as necessary:
Board and the drawer connector. The cables are continuous. • Option Feeder Board, REP 10.1.10
Y N • Optional Feeder Assembly, REP 10.1.1
Replace the Drawer 1 Feeder Harness Assembly. • MCU Board, REP 18.1.11

Check the continuity of the cables on P/J27 and DP/DJ271 between the MCU Board and the
drawer connector. The cables are continuous.
Y N
Replace the Main Harness Assembly.

Replace the 550 Option Feeder Board. The error is fixed.

Y N
Replace the MCU Board, REP 18.1.11.

Perform SCP 6 Final Actions.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
72-211-00, 72-215-00 2-164 Xerox WorkCentre 6655 Color Multifunction Printer
72-216-00 Option Feeder Motor2 Error 75-101-00 Bypass Misfeed Jam
72-216-00 Option Feeder Motor2 75-101-00 Bypass tray misfeed jam

NOTE: Status codes 03-561 and 77-216 are raised with this fault code. NOTE: Status code 07-505 is raised with this fault code.

Initial Actions Initial Actions

1. Check for obstructions in the media path. 1. Check media condition.
2. Check Optional Feeder installation. 2. Check for obstructions in the media path.

Procedure Procedure
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
Use dC330 code 071-014 to test the Tray 2 Feed Motor. The motor rotates. Check the Nudger, Feed, and Separator Rollers for excessive wear or contamination. The
Y N rollers are undamaged and clean.
Replace the Feed Motor, REP 10.1.9. Y N
Clean or replace the rollers.
Replace the Option Feeder Board, REP 10.1.10.
Use dC330 code 071-103 to test the Registration Sensor. The sensor signal changes.
Y N
Replace the Registration Sensor.

Use dC330 code 071-007 to test the Feed Solenoid. The solenoid activates.
Y N
Replace the MSI Feed Solenoid, REP 13.2.99.

Use dC330 code 071-001 to test the Main Motor. The motor rotates.
Y N
Replace the Main Motor on the Drive Assembly, REP 3.1.1.

Replace the MSI Feed Roller, REP 13.2.10.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-165 72-216-00, 75-101-00
75-910-00 Bypass Tray Detached 77-101-00 Regi Off Jam
75-910-00 Bypass Tray Detached 77-101-00 Regi Off Jam, status code 07-522 is raised with this fault code.

Procedure Initial Actions

WARNING 1. Check media condition.
Switch off the electricity to the machine. Disconnect the power cord from the customer 2. Check for obstructions in the media path.
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. Procedure
Check the Bypass Tray installation. The tray is installed properly. WARNING
Y N
Switch off the electricity to the machine. Disconnect the power cord from the customer
Install the Bypass Tray properly.
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
Check the Bypass Tray Cover Assembly. The cover is not broken and works properly.
Y N Check the Nudger, Feed, and Separator Rollers for proper installation, and for excessive wear
Replace the Bypass Tray Cover Assembly. or contamination. The rollers are installed properly, and are undamaged and clean.
Y N
Use dC330 code 071-100 to test the Bypass Tray No Paper Sensor operation. The sensor Reinstall, clean, or replace the rollers as needed.
operation fails.
Y N Use dC330 code 071-103 to test the Registration Sensor. The sensor operates normally.
Replace the MCU Board, REP 18.1.11. Y N
Refer to OF 7 Registration Sensor.
Check the connections between the Bypass Tray No Paper Sensor and the MCU Board (P/
J211 and P/J21. The connections are good. Use dC330 code 071-010 to test the Registration Clutch. The clutch operates normally.
Y N Y N
Reattach the connections securely. Refer to OF 9 Registration Clutch.

Check the continuity of the cables in the Bypass Tray Harness Assembly (P/J211 and P/J21. Use dC330 code 071-004 to test the Paper Transport Motor. The motor operates normally.
The continuity is good. Y N
Y N Refer to 42-324-00 Paper Motor Failure.
Replace the Bypass Tray Harness Assembly.
Use dC330 code 071-104 to test the Exit Sensor. The sensor operates normally.
Check the power to the Bypass Tray No Paper Sensor by measuring if the voltage between the Y N
MCU Board ground and P/J21 pin1 is about +5 VDC. The voltage is correct. Refer to OF 15 Exit Sensor.
Y N
Refer to OF 19 +5 VDC Power. Use dC330 code 071-001 to test the Main Motor. The motor operates normally.
Y N
Replace the Bypass Tray No Paper Sensor. Refer to 42-325-00 Motor Failure.

Replace the Transport Assembly, REP 15.2.1.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
75-910-00, 77-101-00 2-166 Xerox WorkCentre 6655 Color Multifunction Printer
77-102-00 Psync On Jam 77-103-00 to 77-106-00 Exit On/Off Jam
77-102-00 Psync On Jam 77-103-00 Exit Off Jam

NOTE: Status code 07-5?? is raised with this fault code. 77-104-00 Exit Off Early Jam

Initial Actions 77-106-00 Exit On Jam

1. Check media condition.
2. Check for obstructions in the media path. Initial Actions
1. Check Exit Sensor actuator operation.
Procedure 2. Check for obstructions in the media path.
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Procedure
supply while performing tasks that do not need electricity. Electricity can cause death or WARNING
injury. Moving parts can cause injury.
Switch off the electricity to the machine. Disconnect the power cord from the customer
Check the Nudger, Feed, and Separator Rollers for excessive wear or contamination. The supply while performing tasks that do not need electricity. Electricity can cause death or
rollers are undamaged and clean. injury. Moving parts can cause injury.
Y N
Clean or replace the rollers.
WARNING
Do not touch the Fuser while it is hot.
Use dC330 code 071-103 to test the Registration Sensor. The sensor signal changes. Check the Nudger, Feed, and Separator Rollers for proper installation, and for excessive wear
Y N or contamination. The rollers are installed properly, and are undamaged and clean.
Replace the Registration Sensor. Y N
Reinstall, clean, or replace the rollers as needed.
Use dC330 code 071-010 to test the Registration Clutch. The clutch activates.
Y N Use dC330 code 071-104 to test the Exit Sensor. The sensor operates normally.
Replace the Registration Clutch, REP 15.1.8. Y N
Refer to OF 15 Exit Sensor.
Use dC330 code 071-001 to test the Main Motor. The motor rotates.
Y N Use dC330 code 071-011 to test the Exit Clutch 1. The clutch operates normally.
Replace the Main Drive Assembly, REP 3.1.1. Y N
Refer to OF 16 Exit Clutch 1.
Cycle system power. The error persists.
Y N Use dC330 code 071-012 to test the Exit Clutch 2. The clutch operates normally.
Perform SCP 6 Final Actions. Y N
Refer to OF 17 Exit Clutch 2.
Perform GP 9 to reload system software. The error persists.
Y N Use dC330 code 071-001 to test the Main Motor. The motor operates normally.
Perform SCP 6 Final Actions. Y N
Refer to 42-325-00 Motor Failure.
Replace the Transport Assembly, REP 15.2.1.
Replace the Exit Chute Assembly, REP 17.1.1.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-167 77-102-00, 77-103-00 to 77-106-00
77-110-00 Feeder Regi Sensor On Jam 77-123-00 Duplex Regi On Jam
77-110-00 Feeder Regi sensor On Jam 77-123-00 Duplex Regi On Jam

NOTE: Status code 07-520 is raised with this fault code. NOTE: Status code 07-511 is raised with this fault code.

Initial Actions Initial Actions

1. Check media condition. 1. Check Rear Cover latch and fitment.
2. Check for obstructions in the media path. 2. Check media condition.
3. Check for obstructions in the media path.
Procedure
WARNING Procedure
Switch off the electricity to the machine. Disconnect the power cord from the customer WARNING
supply while performing tasks that do not need electricity. Electricity can cause death or Switch off the electricity to the machine. Disconnect the power cord from the customer
injury. Moving parts can cause injury. supply while performing tasks that do not need electricity. Electricity can cause death or
Check the Nudger, Feed, and Separator Rollers for excessive wear or contamination. The injury. Moving parts can cause injury.
rollers are undamaged and clean. WARNING
Y N
Clean or replace the rollers. Do not touch the Fuser while it is hot.
Check the Duplex, Exit, and Pinch Rollers for excessive wear or contamination. The rollers
Use dC330 code 071-103 to test the Registration Sensor. The sensor signal changes. are undamaged and clean.
Y N Y N
Replace the Registration Sensor. Clean or replace the rollers.

Use dC330 code 071-010 to test the Registration Clutch. The clutch activates. Use dC330 code 071-010 to test the Registration Clutch. The clutch activates.
Y N Y N
Replace the Registration Clutch, REP 15.1.8. Replace the Registration Clutch, REP 15.1.8.

Use dC330 code 071-001 to test the Main Motor. The motor rotates. Use dC330 code 071-001 to test the Main Motor. The motor rotates.
Y N Y N
Replace the Main Drive Assembly, REP 3.1.1. Replace the Main Drive Assembly, REP 3.1.1.

Replace the Transport Assembly, REP 15.2.1. lnstall new components as necessary:
1. Duplex Chute Assembly, REP 14.1.1
2. Exit Drive Assembly, REP 17.1.21
3. Transport Assembly, REP 15.2.1

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
77-110-00, 77-123-00 2-168 Xerox WorkCentre 6655 Color Multifunction Printer
77-300-00 Front Door Interlock Open 77-301-00 Rear Door Interlock Open
77-300-00 Front Door Interlock Open 77-301-00 Side Cover Open

NOTE: Status code 01-510 is raised with this fault code. NOTE: Status code 01-516 is raised with this fault code.

Initial Actions Initial Actions

1. Check Front Cover latch and fitment. 1. Check Rear Cover latch and fitment.
2. Check front interlock actuator. 2. Check rear interlock actuator.
3. Check Front Interlock Switch position and condition. 3. Check Rear Interlock Switch position and condition.

Procedure Procedure
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
Use dC330 code 041-302 to test the Front Cover Sensor. The sensor fails to operate nor- WARNING
mally.
Do not touch the Fuser while it is hot.
Y N
Use dC330 code 041-301 to test the Rear interlock Switch. The switch signal changes.
Replace the MCU Board, REP 18.1.11.
Y N
Check the connection between the Front Cover Sensor and the MCU Board (P/J145 and P/ Replace the Rear Interlock Switch.
J14). The connections are good.
Y N lnstall new components as necessary:
Reattach the connectors securely. 1. Rear Door Assembly, REP 19.2.98
2. LVPS, REP 18.3.2
Check if the voltage between the MCU Board ground and P/J14 pin 9 is about +5 VDC. The
voltage is correct.
Y N
Refer the OF 19 +5 VDC Power.

Replace the Front Cover Sensor, REP 18.1.22

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-169 77-300-00, 77-301-00
77-302-00 Right Door Interlock Open 77-900-00 IOT Static Jam
77-302-00 Right Hand Door Interlock Open 77-900-00 IOT Static Jam

NOTE: Status code 01-502 is raised with this fault code. NOTE: Status code 07-510 is raised with this fault code.

Initial Actions Initial Actions

1. Check Right Cover latch and fitment. 1. Clear any media from the media path.
2. Check right interlock actuator. 2. Check for obstructions at or near the Registration Sensor.
3. Check Right Interlock Switch position and condition. 3. Cycle system power.

Procedure Procedure
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
WARNING Use dC330 code 071-103 to test the Registration Sensor. The sensor signal changes.
Y N
Do not touch the Fuser while it is hot.
Replace the Registration Sensor.
Use dC330 code 041-300 to test the Side Cover Interlock Switch. The switch fails to operate
normally. Replace the Transport Assembly, REP 15.2.1.
Y N
Replace the MCU Board, REP 18.1.11.

Check the connection between the Door Interlock Switch and the LVPS (P/J42). The connec-
tions are good.
Y N
Reattach the connections securely.

Replace the Door Interlock Switch, REP 19.1.98. The error persists.
Y N
Perform SCP 6 Final Actions.

Replace the LVPS, REP 18.3.2

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
77-302-00, 77-900-00 2-170 Xerox WorkCentre 6655 Color Multifunction Printer
77-901-00 Optional Feeder Static Jam
77-901-00 Optional Feeder Static Jam

NOTE: Status code 07-520 is raised with this fault code.

Initial Actions
1. Clear any media from the media path.
2. Check for obstructions at or near the Exit Sensor.
3. Cycle system power.

Procedure
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
Do not touch the Fuser while it is hot.
Use the appropriate dC330 code 071-117 to test the Optional Tray Path Sensor. The sensor
signal changes.
Y N
Replace the affected Path Sensor.

Replace the Feed Assembly, REP 10.2.1.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-171 77-901-00
Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
77-901-00 2-172 Xerox WorkCentre 6655 Color Multifunction Printer
91-312-00 CC HVPS Comm Fail 91-400-00, 91-911-00 Waste Toner Bottle Near Full
91-312-00 CC Wire monitor detects CC HVPS comm failure 91-400-00 Waste Bottle Near Full

NOTE: Status codes 03-561 and 09-548 are raised with this fault code. 91-911-00 Waste Bottle Full

Procedure Procedure
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
injury. Moving parts can cause injury.
Cycle system power. The error persists.
Use dC330 code 094-202 to check the Waste Toner Box Full Sensor. The sensor fails to
Y N
operate normally.
Go to SCP 6 and complete the Final Actions.
Y N
Replace the MCU Board, REP 18.1.11.
Replace HVPS, REP 18.1.12, REP 18.1.16.
Check the connection between the Toner Full Sensor and the MCU Board (P/J203 and P/
J29). The connections are good.
Y N
Reattach the connections securely.

Check if the Toner Full Sensor voltage between the MCU Board ground and P/J29 pin 20 is
about +5 VDC. The voltage is correct.
Y N
Refer to OF 19 +5 VDC Power.

Replace the Toner Full Sensor, REP 4.1.17.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-173 91-312-00, 91-400-00, 91-911-00
91-401-00 to 91-934-00 Drum Cartridge Life Near End 91-912-00 Drum (K) Not in Position
91-401-00 K Drum Cartridge Life Near End 91-912-00 Drum (K) not in position

91-402-00 K Drum Cartridge Life End NOTE: Status code 09-553 is raised with this fault code.

91-411-00 Drum Cartridge Y Near Life Initial Actions

1. Verify Imaging Unit is genuine Xerox.
91-421-00 Drum Cartridge M Near Life 2. Reseat and lock the Imaging Unit.
3. Check the CRUM connector (REP 8.1.1) for bent contacts or other damage.
91-431-00 Drum Cartridge C Near Life
4. Cycle system power.
91-480-00 Drum Cartridge Y Life Over
Procedure
91-481-00 Drum Cartridge M Life Over WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
91-482-00 Drum Cartridge C Life Over
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
91-932-00 Drum Cartridge Y Life End
Check Drum K position. The drum is in the correct position.
91-933-00 Drum Cartridge M Life End Y N
Reseat the drum. The error persists.
91-934-00 Drum Cartridge C Life End Y N
Perform SCP 6 Final Actions.
Initial Actions
Continue with the procedure.
1. Reseat the Drum Cartridge.
2. Verify Drum Cartridge is genuine Xerox. Replace the CRUM connector, REP 8.1.1.
3. Cycle system power.

Procedure
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
Check Drum Cartridge life count. The Drum Cartridge is at or near end of life.
Y N
Reseat the Drum Cartridge and cycle system power. The error persists.
Y N
Perform SCP 6 Final Actions

lnstall new components as necessary:

1. Xerographic Connector, REP 8.1.1
2. MCU Board, REP 18.1.11

Replace the Drum Cartridge, REP 8.1.95

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
91-401-00 to 91-934-00, 91-912-00 2-174 Xerox WorkCentre 6655 Color Multifunction Printer
91-913-00 K Drum Cartridge Dead Stop Error 91-914-00, 91-921-00 K Drum Comm Error
91-913-00 K Drum Cartridge Dead Stop Error 91-914-00 K Drum Comm Error

Initial Actions 91-921-00 K Drum Cartridge Missing. Status code 09-553.

1. Reseat the Drum Cartridge.
NOTE: Status codes 03-561 and 09-548 are raised with these fault codes.
2. Verify Drum Cartridge is genuine Xerox.
3. Cycle system power. Initial Actions
1. Verify Drum Cartridge is genuine Xerox.
Procedure 2. Inspect the Drum Cartridge Xerographic Connector.
WARNING 3. Cycle system power.
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or Procedure
injury. Moving parts can cause injury. WARNING
Cycle system power. The error persists.
Switch off the electricity to the machine. Disconnect the power cord from the customer
Y N
supply while performing tasks that do not need electricity. Electricity can cause death or
Go to SCP 6 and complete the Final Actions.
injury. Moving parts can cause injury.
Check the connection between the CRUM and the CRUM Connector Assembly inside the K
Check Drum Cartridge life count. The Drum Cartridge is at or near end of life.
Imaging Unit. The Imaging Unit connection is clean and installed properly.
Y N
Y N
Reseat the Drum Cartridge and cycle system power. The error persists.
Clean the connector and reinstall the K Imaging Unit.
Y N
Perform SCP 6 Final Actions
Check the connection terminal of the CRUM inside the K Imaging Unit. The connection ter-
minal is good and not broken.
lnstall new components as necessary:
1. Toner Cartridge, REP 5.1.8 Y N
Replace the K Imaging Unit, REP 8.1.95.
2. Xerographic Connector, REP 8.1.1
3. MCU Board, REP 18.1.11 Check the connection terminal of the CRUM Connector Assembly. The connection terminal
is good and not broken.
Replace the Drum Cartridge. Y N
Replace the CRUM Connector Assembly, REP 8.1.1.

Check the connection between the CRUM Connector Assembly and the MCU Board (P/J124
and P/J12). The connections are good.
Y N
Reattach the connectors securely.

Check the continuity of the cables in the harness connecting the CRUM Connector Assembly
and the MCU Board (P/J124 and P/J12). The continuity is good.
Y N
Replace the CRUM Connector Assembly REP 8.1.1.

Replace the MCU Board, REP 18.1.11.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-175 91-913-00, 91-914-00, 91-921-00
91-915-00 to 91-923-00 Drum X CRUM Data Broken 91-917-00 Drum Y Comm Fail
91-915-00 K Drum Cartridge Data Error. Status codes 03-561, 09-548. 91-917-00 Drum Y CRUM communication failure

91-920-00 Drum Y CRUM data broken. Status code 09-506. NOTE: Status codes 03-561 and 09-548 are raised with this fault code.

91-922-00 Drum M CRUM data broken. Status code 09-505. Initial Actions
1. Verify Drum Cartridge is genuine Xerox.
91-923-00 Drum C CRUM data broken. Status code 09-504. 2. Inspect the Drum Cartridge Xerographic Connector.
3. Cycle system power.
Procedure
WARNING Procedure
Switch off the electricity to the machine. Disconnect the power cord from the customer WARNING
supply while performing tasks that do not need electricity. Electricity can cause death or
Switch off the electricity to the machine. Disconnect the power cord from the customer
injury. Moving parts can cause injury.
supply while performing tasks that do not need electricity. Electricity can cause death or
Cycle system power. The error persists.
injury. Moving parts can cause injury.
Y N
Check the connection between the CRUM and the CRUM Connector Assembly inside the Y
Go to SCP 6 and complete the Final Actions.
Imaging Unit. The Imaging Unit connection is clean and installed properly.
Y N
Check if the Imaging Unit is correct for this printer and installed in the correct color location.
Clean the connector and reinstall the Y Imaging Unit.
The imaging unit is the correct part and installed in the correct location.
Y N
Check the connection terminal of the CRUM inside the Y Imaging Unit. The connection ter-
Install the correct Imaging Unit, REP 8.1.95.
minal is good and not broken.
Reinstall the Imaging Unit, REP 8.1.95. Y N
Replace the Y Imaging Unit, REP 8.1.95.

Check the connection terminal of the CRUM Connector Assembly. The connection terminal
is good and not broken.
Y N
Replace the CRUM Connector Assembly, REP 8.1.1.

Check the connection between the CRUM Connector Assembly and the MCU Board (P/J121
and P/J12). The connections are good.
Y N
Reattach the connectors securely.

Check the continuity of the cables in the harness connecting the CRUM Connector Assembly
and the MCU Board (P/J121 and P/J12). The continuity is good.
Y N
Replace the CRUM Connector Assembly, REP 8.1.1.

Replace the MCU Board, REP 18.1.11.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
91-915-00 to 91-923-00, 91-917-00 2-176 Xerox WorkCentre 6655 Color Multifunction Printer
91-918-00 Drum M Comm Fail 91-919-00 Drum C Comm Fail
91-918-00 Drum M CRUM communication failure 91-919-00 Drum C communication failure

NOTE: Status codes 03-561 and 09-548 are raised with this fault code. NOTE: Status codes 03-561 and 09-548 are raised with this fault code.

Initial Actions Initial Actions

1. Verify Drum Cartridge is genuine Xerox. 1. Verify Drum Cartridge is genuine Xerox.
2. Inspect the Drum Cartridge Xerographic Connector. 2. Inspect the Drum Cartridge Xerographic Connector.
3. Cycle system power. 3. Cycle system power.

Procedure Procedure
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
Check the connection between the CRUM and the CRUM Connector Assembly inside the M Check the connection between the CRUM and the CRUM Connector Assembly inside the C
Imaging Unit. The Imaging Unit connection is clean and installed properly. Imaging Unit. The Imaging Unit connection is clean and installed properly.
Y N Y N
Clean the connector and reinstall the M Imaging Unit. Clean the connector and reinstall the C Imaging Unit.

Check the connection terminal of the CRUM inside the M Imaging Unit. The connection ter- Check the connection terminal of the CRUM inside the C Imaging Unit. The connection ter-
minal is good and not broken. minal is good and not broken.
Y N Y N
Replace the M Imaging Unit, REP 8.1.95. Replace the C Imaging Unit, REP 8.1.95.

Check the connection terminal of the CRUM Connector Assembly. The connection terminal Check the connection terminal of the CRUM Connector Assembly. The connection terminal
is good and not broken. is good and not broken.
Y N Y N
Replace the CRUM Connector Assembly, REP 8.1.1. Replace the CRUM Connector Assembly, REP 8.1.1.

Check the connection between the CRUM Connector Assembly and the MCU Board (P/J122 Check the connection between the CRUM Connector Assembly and the MCU Board (P/J123
and P/J12). The connections are good. and P/J12). The connections are good.
Y N Y N
Reattach the connectors securely. Reattach the connectors securely.

Check the continuity of the cables in the harness connecting the CRUM Connector Assembly Check the continuity of the cables in the harness connecting the CRUM Connector Assembly
and the MCU Board (P/J122 and P/J12). The continuity is good. and the MCU Board (P/J123 and P/J12). The continuity is good.
Y N Y N
Replace the CRUM Connector Assembly, REP 8.1.1. Replace the CRUM Connector Assembly, REP 8.1.1.

Replace the MCU Board, REP 18.1.11. Replace the MCU Board, REP 18.1.11.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-177 91-918-00, 91-919-00
91-927-00 to 91-929-00 Drum X CRUM Not Position 91-936-00 to 91-939-00 Drum X Cartridge ID Error
91-927-00 Drum Y CRUM is not in position. Status code 09-556. 91-936-00 Drum Y Cartridge ID Error

91-928-00 Drum M CRUM is not in position. Status code 09-555. 91-937-00 Drum M Cartridge ID Error

91-929-00 Drum C CRUM is not in position. Status code 09-554 91-938-00 Drum C Cartridge ID Error

Initial Actions 91-939-00 Drum K Cartridge ID Error

1. Verify Imaging Unit is genuine Xerox.
NOTE: Status code 09-548 is raised with this fault code.
2. Reseat and lock the Imaging Unit.
3. Check the CRUM connector (REP 8.1.1) for bent contacts or other damage. Initial Actions
4. Cycle system power. 1. Verify Drum Cartridge is genuine Xerox.
2. Inspect the Drum Cartridge Xerographic Connector.
Procedure 3. Cycle system power.
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Procedure
supply while performing tasks that do not need electricity. Electricity can cause death or WARNING
injury. Moving parts can cause injury.
Switch off the electricity to the machine. Disconnect the power cord from the customer
Check Drum K position. The drum is in the correct position. supply while performing tasks that do not need electricity. Electricity can cause death or
Y N injury. Moving parts can cause injury.
Reseat the drum. The error persists.
Check Xerographic Connector condition. The Xerographic Connector is good.
Y N Y N
Perform SCP 6 Final Actions. Replace the Xerographic Connector, REP 8.1.1. The error persists.
Y N
Continue with the procedure. Perform SCP 6 Final Actions

Replace the CRUM connector, REP 8.1.1.

lnstall new components as necessary:
1. Xerographic Connector harness
2. MCU Board, REP 18.1.11

Replace the Drum Cartridge, REP 5.1.8.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
91-927-00 to 91-929-00, 91-936-00 to 91-939-00 2-178 Xerox WorkCentre 6655 Color Multifunction Printer
92-310-00, 92-311-00 CTD Sensor Fail 92-584-00, 92-586-00 Internal - Over Temp Failure
92-310-00 CTD Sensor Very Dark Fail 92-584-00 Internal temperature over temp Broken. Status codes 03-561 and 04-563 are raised
with this fault code.
92-311-00 CTD Sensor V Clean Sensor Fail
92-586-00 Internal - Over temp failure
NOTE: Status codes 03-561 and 09-548 are raised with this fault code.
Initial Actions
Procedure
1. Verify printer installation complies with environmental specifications.
WARNING 2. Clear vents of any dust accumulation.
Switch off the electricity to the machine. Disconnect the power cord from the customer
3. Cycle system power.
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
Cycle system power. The error persists.
Procedure
Y N WARNING
Go to SCP 6 and complete the Final Actions. Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
Check the CTD Sensor surface for any smears or foreign objects. The sensor is clean. injury. Moving parts can cause injury.
Y N
Use dC140 code 091-200 to check environmental sensor operation. The sensor is good.
Clean the CTD Sensor surface by wiping with a dry, soft cloth (without alcohol), or remove
Y N
the foreign objects.
Replace the environmental sensor.

Check the CTD Sensor Assembly installation. The CTD Sensor Assembly is installed prop-
Use dC330 code 042-001 to test the Main Fan. The fan rotates.
erly. Y N
Y N Replace the Main Fan, REP 4.1.13.
Reinstall the CTD Sensor Assembly, REP 6.1.14.
Use dC330 code 042-003 to test the IP Fan The fan rotates.
Check the connection between the CTD Sensor Assembly and the MCU Board (P/J131 and P/ Y N
J13). The connections are good.
Replace the IP Fan, REP 18.2.16.
Y N
Connect P/J131 and P/J13 securely. Check Toner Cartridge life count. The Toner Cartridge is at or near end of life.
Y N
Check the continuity of the cables in the harness between P/J131 and P/J13 connecting the Reseat and lock the Toner Cartridge, then cycle system power. The error persists.
CTD Sensor Assembly and the MCU Board. The continuity is good. Y N
Y N
Perform SCP 6 Final Actions
Replace the Regi Harness Assembly.
lnstall new components as necessary:
Check if the voltage between the MCU Board ground and P/J13 pin 1 is about +5 VDC. The
1. environmental sensor
voltage is about +5 VDC.
Y N 2. LVPS, REP 18.3.2
Refer to OF 19 +5 VDC Power Procedure. 3. MCU Board, REP 18.1.11

Replace CTD Sensor Assembly, REP 6.1.14. The error is fixed. Replace the Toner Cartridge, REP 5.1.8.
Y N
Replace the MCU Board, REP 18.1.11.

Go to SCP 6 and complete the Final Actions.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-179 92-310-00, 92-311-00, 92-584-00, 92-586-00
92-652-00 Dirty CTD Sensor 92-653-00 CTD Sensor TC/SAD Patch Fail (V Dark)
92-652-00 Dirty CTD Sensor 92-653-00 CTD Sensor TC/SAD patch fail (V dark)

NOTE: Status codes 03-561 and 09-548 are raised with this fault code. NOTE: Status codes 03-561 and 09-548 are raised with this fault code.

Procedure Procedure
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
Check the CTD Sensor surface for smears or foreign objects. The sensor is clean. Cycle system power. The error persists.
Y N Y N
Clean the CTD Sensor surface by wiping with a dry, soft cloth (without alcohol), or remove Go to SCP 6 and complete the Final Actions.
the foreign objects.
Replace CTD sensor, REP 6.1.14.
Check the CTD Sensor assembly installation. The CTD Sensor Assembly is installed prop-
erly.
Y N
Reinstall the CTD Sensor Assembly, REP 6.1.14.

Check the connection between the CTD Sensor Assembly and the MCU Board (P/J131 and P/
J13). The connections are good.
Y N
Connect P/J131 and P/J13 securely.

Check the continuity of the cables in the harness between P/J131 and P/J13 connecting the
CTD Sensor assembly and the MCU Board. The continuity is good.
Y N
Replace the Regi Harness Assembly.

Check if the voltage between the MCU Board ground and P/J pin 1 is about +5 VDC. The
voltage is about +5 VDC.
Y N
Refer to OF 19 +5 VDC Power.

Replace the CTD Sensor Assembly, REP 6.1.14.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
92-652-00, 92-653-00 2-180 Xerox WorkCentre 6655 Color Multifunction Printer
92-661-00 Environment Temperature Sensor Fail 92-670-00 to 92-673-00 X Patch Error
92-661-00 Environment Temperature Sensor Fail 92-670-00 Yellow ADC Patch Fail

Procedure 92-671-00 Magenta ADC Patch Fail

WARNING 92-672-00 Cyan ADC Patch Fail
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. 92-673-00 Black ADC Patch Fail
Moving parts can cause injury.
Cycle system power. The error persists. Procedure
Y N
Perform SCP 6 Final Actions
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
Check the connection between the Laser Unit and the MCU Board, and the connection supply while performing tasks that do not need electricity. Electricity can cause death or
between the Laser Unit and the PWBA LVPS (P/J36, P/J11, and P/J43). The connections injury. Moving parts can cause injury.
are good.
NOTE:
Y N
• Apply this procedure to the color corresponding to error code.
Secure the connections.
• This error is caused from an amount of toner in the Imaging Unit’s developer assembly
Check the continuity of the cables on P/J43 and P/J431 between the LVPS and the Laser Unit. that is insufficient to maintain density. The two likely causes are, the Print Cartridge is not
The cables are continuous. fully seated, or the Dispenser Assembly is not functioning correctly.
Y N
Check the Imaging Unit connection part for cleanliness and proper installation. The Imaging
Replace the Top Harness Assembly, REP 18.4.5.
Unit should touch against the guides on the left and right sides. The Imaging Unit is clean
and properly installed.
Close the interlock switches and check if the voltage between the LVPS ground and the P/J43
Y N
pin 2 is about +5 VDC. The voltage is correct.
Clean the connection part, then reinstall the Imaging Unit and run prints until the print den-
Y N sity is normal (about 50).
Replace the LVPS, REP 18.3.2.
Reseat the Imaging Unit and run prints until the print density is normal (about 50). The error
Close the interlock switches and check if the voltage between the MCU Board ground and the
persists.
P/J36 pin 1 is about +24 VDC. The voltage is correct.
Y N
Y N Perform SCP 6 Final Actions.
Refer to OF 18 +24 VDC Power.
Check the Dispenser Motor operation, GP 30, comparing the affected color to an unaffected
Check if the voltage between the MCU Board ground and the P/J11 pin 1 is about +3.3 VDC.
color. The Dispenser is binding or not dispensing toner into the Imaging Unit.
The voltage is correct. Y N
Y N
Perform SCP 6 Final Actions.
Refer to OF 20 +3.3 VDC Power.
Replace the Dispenser Assembly for the affected color, REP 5.1.4, then run prints until the
Replace the Laser Unit, REP 2.1.1. The error is fixed.
density is normal. The error persists.
Y N Y N
Replace the MCU Board, REP 18.1.11. Perform SCP 6 Final Actions.

Perform SCP 6 Final Actions. Replace the Dispenser Motor Assembly, REP 5.1.1.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-181 92-661-00 , 92-670-00 to 92-673-00
92-805-00 24V Fan Off Detect 93-320-00 Developer Motor Fail
92-805-00 24V fan off detect. 93-320-00 Developer motor rotation is not correct

Initial Actions NOTE: Status codes 03-561 and 09-548 are raised with this fault code.
1. Clear vents of any dust accumulation. Procedure
2. Cycle system power.
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
Procedure supply while performing tasks that do not need electricity. Electricity can cause death or
WARNING injury. Moving parts can cause injury.
Switch off the electricity to the machine. Disconnect the power cord from the customer Cycle system power. The error persists.
supply while performing tasks that do not need electricity. Electricity can cause death or Y N
injury. Moving parts can cause injury. Go to SCP 6 and complete the Final Actions.
Use dC330 code 042-001 to test the Main Fan The fan rotates.
Y N Execute dC330 code 093-001, and check the Developer Motor rotation. Motor fails to func-
Replace the Main Fan, REP 4.1.13. tion properly.
Y N
Use dC140 code 091-200 to check environmental sensor operation. The sensor is good. Replace the MCU Board, REP 18.1.11.
Y N
Replace the environmental sensor. Check the connection between the Developer Motor and the MCU Board (P/J331 and P/J33).
The connections are good.
lnstall new components as necessary: Y N
1. Main Fan, REP 4.1.13 Secure the connections.
2. LVPS, REP 18.3.2
Check the continuity of the cables between the connections for the Developer Motor and the
3. MCU Board, REP 18.1.11
MCU Board (P/J331 and P/J33). The continuity is good.
Y N
Replace the Drive Harness Assembly, REP 18.4.2.

Close the interlock switch(es), and check if the voltage between the MCU Board ground and P/
J33 pin 2, and the voltage between the MCU Board ground and P/J33 pin 4 is about +24 VDC.
The voltage is correct.
Y N
Replace the LVPS, REP 18.3.2.

Replace the Developer Motor on the Drive Assembly, REP 3.1.1.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
92-805-00, 93-320-00 2-182 Xerox WorkCentre 6655 Color Multifunction Printer
93-400-00 to 93-424 Toner Cartridge Near Empty 93-425-00, 93-912-00 K Toner Cartridge Life Near End
93-400-00 Yellow toner cartridge near empty; replace soon 93-425-00 K Toner Cartridge Life Near End

93-423-00 Magenta toner cartridge near empty; replace soon 93-912-00 K Toner Cartridge Life End

93-424-00 Cyan toner cartridge near empty; replace soon Initial Actions
1. Verify Toner Cartridge is genuine Xerox.
Initial Actions 2. Reseat and lock the Toner Cartridge.
1. Verify Toner Cartridge is genuine Xerox.
3. Cycle system power.
2. Reseat and lock the Toner Cartridge.
3. Cycle system power. Procedure
WARNING
Procedure
Switch off the electricity to the machine. Disconnect the power cord from the customer
WARNING supply while performing tasks that do not need electricity. Electricity can cause death or
Switch off the electricity to the machine. Disconnect the power cord from the customer injury. Moving parts can cause injury.
supply while performing tasks that do not need electricity. Electricity can cause death or Check Toner Cartridge life count. The Toner Cartridge is at or near end of life.
injury. Moving parts can cause injury. Y N
Cycle system power. The error persists. Reseat and lock the Toner Cartridge, then cycle system power. The error persists.
Y N Y N
Go to SCP 6 and complete the Final Actions. Perform SCP 6 Final Actions

Replace Toner Cartridge, REP 5.1.8. lnstall new components as necessary:

1. Toner Cartridge, REP 5.1.8
2. Toner CRUM Assembly
3. MCU Board, REP 18.1.11

Replace the Toner Cartridge, REP 5.1.8.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-183 93-400-00 to 93-424, 93-425-00, 93-912-00
93-921-00 to 93-935-00 Toner CRUM Data/Comm Fail 93-922-00 to 93-924 Toner Cartridge is Empty
93-921-00 Toner CRUM Comm Fail Magenta. Status codes 03-561 and 09-548. 93-922-00 Cyan toner cartridge is empty

93-927-00 Toner CRUM Comm Fail Yellow. Status codes 03-561 and 09-548. 93-923-00 Yellow toner cartridge is empty

93-929-00 Toner CRUM Comm Fail Cyan. Status codes 03-561 and 09-548. 93-924-00 Magenta toner cartridge is empty

93-933-00 Toner CRUM Data Broken Fail Yellow. Status code 09-558. Initial Actions
1. Verify Toner Cartridge is genuine Xerox.
93-934-00 Toner CRUM Data Broken Fail Magenta. Status code 09-559.
2. Reseat and lock the Toner Cartridge.
93-935-00 Toner CRUM Data Broken Fail Cyan. Status code 09-560. 3. Cycle system power.

Initial Actions Procedure

1. Verify Toner Cartridge is genuine Xerox. WARNING
2. Inspect the Toner Cartridge CRUM connector. Switch off the electricity to the machine. Disconnect the power cord from the customer
3. Cycle system power. supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
Procedure Cycle system power. The error persists.
Y N
WARNING Go to SCP 6 and complete the Final Actions.
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or Check Dispense Motor drive GP 29. The error persists.
injury. Moving parts can cause injury. Y N
Cycle system power. The error persists. Go to SCP 6 and complete the Final Actions.
Y N
Perform SCP 6 Final Actions Check toner supply path. The error persists.
Y N
Replace the Toner Cartridge, REP 5.1.8. Go to SCP 6 and complete the Final Actions.

Replace the Toner Cartridge, REP 5.1.8.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
93-921-00 to 93-935-00, 93-922-00 to 93-924 2-184 Xerox WorkCentre 6655 Color Multifunction Printer
93-925-00 to 93-932-00 Toner Cartridge Error 93-938-00 CRUM Validation
93-925-00 K Toner ID Error 93-938-00 Crum validation

93-926-00 K Toner Cartridge Data Error Initial Actions

1. Inspect the Toner Cartridge CRUM connector.
93-928-00 K Toner Cartridge Comm Failure
2. Reseat and lock the Toner Cartridge.
93-930-00 Yellow Toner ID Error 3. Cycle system power.

93-931-00 Magenta Toner ID Error Procedure

93-932-00 Cyan Toner ID Error
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
NOTE: Status codes 03-561 and 09-548 are raised with these fault codes. supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
Initial Actions Check Toner CRUM Connector condition. The Toner CRUM Assembly is good.
1. Verify Toner Cartridge is genuine Xerox. Y N
2. Inspect the Toner Cartridge CRUM connector. Replace the Toner CRUM Assembly, REP 8.1.1. The error persists.
Y N
3. Cycle system power.
Perform SCP 6 Final Actions

Procedure lnstall new components as necessary:

WARNING 1. Toner Cartridge, REP 5.1.8
Switch off the electricity to the machine. Disconnect the power cord from the customer 2. MCU Board, REP 18.1.11
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. Replace the Toner Cartridge, REP 5.1.8.
Check Toner Cartridge life count. Toner Cartridge life remains.
Y N
Replace the Toner Cartridge, REP 5.1.8.

Check Toner CRUM Connector condition. The Toner CRUM Assembly is good.
Y N
Replace the Toner CRUM Assembly, REP 8.1.1. The error persists.
Y N
Perform SCP 6 Final Actions

lnstall new components as necessary:

1. Toner Cartridge, REP 5.1.8
2. MCU Board, REP 18.1.11

Replace the Toner Cartridge, REP 5.1.8.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-185 93-925-00 to 93-932-00, 93-938-00
93-970-00 to 93-973-00 Toner CRUM Not in Position 94-315-00 BTR Illegal Output
93-970-00 Toner CRUM Y not in position. Status code 09-540. 94-315-00 BTR illegal output

93-971-00 Toner CRUM M not in position. Status code 09-541. NOTE: Status codes 3-561 and 4-563 are raised with this fault code.

93-972-00 Toner CRUM C not in position. Status code 09-542. Procedure

WARNING
93-973-00 Toner CRUM K not in position. Status code 09-543. Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
Initial Actions injury. Moving parts can cause injury.
1. Verify Toner Cartridge is genuine Xerox. WARNING
2. Reseat and lock the Toner Cartridge.
Do not touch the Fuser while it is hot.
3. Cycle system power.
Cycle system power. The error persists.
Y N
Procedure Perform SCP 6 Final Actions
WARNING
Upgrade MCU software to newer version.
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
Check Toner CRUM Connector condition. The Toner CRUM Assembly is good.
Y N
Replace the Toner CRUM Assembly. The error persists.
Y N
Perform SCP 6 Final Actions

lnstall new components as necessary:

1. Toner Cartridge. REP 5.1.8
2. MCU Board, REP 18.1.11

Replace the Toner Cartridge, REP 5.1.8.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
93-970-00 to 93-973-00, 94-315-00 2-186 Xerox WorkCentre 6655 Color Multifunction Printer
94-419-00 to 94-424-00 BTR (IBT) Life End 94-910-00 BTR (IBT) Unit Not in Position
94-419-00 BTR Near Life End 94-910-00 BTR unit not in position

94-422-00 BTR Life End Procedure

94-424-00 BTR Life Over
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
Initial Actions supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Check Transfer Roller life count.
2. Cycle system power.
WARNING
Do not touch the Fuser while it is hot.
Procedure Raise status. The error persists.
Y N
WARNING Perform SCP 6 Final Actions.
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or Re-insert BTR. The error persists.
injury. Moving parts can cause injury. Y N
WARNING Perform SCP 6 Final Actions.
Do not touch the Fuser while it is hot.
lnstall new components as necessary:
Check Transfer Roller life count. The Transfer Roller is at or near end of life. 1. Transfer Roller, REP 6.1.97
Y N
2. MCU Board, REP 18.1.11
lnstall new components as necessary:
1. Transfer Roller, REP 6.1.97
2. MCU Board, REP 18.1.11

Replace the Transfer Roller, REP 6.1.97

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-187 94-419-00 to 94-424-00, 94-910-00
95-000-00 to 95-255-00 Upgrade Failure 95-110-00 Upgrade Failure : HCSS BO Application

One or more system software components has failed to upgrade.

95-140-00 Upgrade Failure : DC NC Application

95-000-00 Upgrade Failure : DC Boot Code

95-141-00 Upgrade Failure : DC NC Operation System

95-001-00 Upgrade Failure : SWUP Code

95-150-00 Upgrade Failure : IIT Application

95-002-00 Upgrade Failure : DC Application 95-151-00 Upgrade Failure : Embedded Fax Application

95-008-00 Upgrade Failure : DC operating System

95-153-00 Upgrade Failure : IIT Kernel

95-009-00 Upgrade Failure : DC CIPS

95-154-00 Upgrade Failure : IIT A4 Scan

95-016-00 Upgrade Failure : SUI Application

95-155-00 Upgrade Failure : IIT CCD Module

95-019-00 Upgrade Failure : SUI H8

95-156-00 Upgrade Failure : IIT FW TES Module

95-020-00 Upgrade Failure : DADH Application

95-157-00 Upgrade Failure : DADH Quiet 100 Sheet Module

95-021-00 Upgrade Failure : External Memeory

95-158-00 Upgrade Failure : DADH 100 Sheet Module

95-022-00 Upgrade Failure : DADH Kernel

95-159-00 Upgrade Failure : DADH Quiet Module

95-030-00 Upgrade Failure : Fax Application 95-170-00 Upgrade Failure : Scanner

95-031-00 Upgrade Failure : Fax FPGA 95-180-00 Upgrade Failure : HCF FW Module

95-035-00 Upgrade Failure : Fax Boot

95-190-00 Upgrade Failure : PFM FW Module

95-038-00 Upgrade Failure : Embedded Fax 95-191-00 Upgrade Failure : PFP FW Module

95-040-00 Upgrade Failure : IOT Bootstrap 95-192-00 Upgrade Failure : HVF Application

95-041-00 Upgrade Failure : IOT Boot Loader

95-193-00 Upgrade Failure : HVF BM Application

95-042-00 Upgrade Failure : IOT Application 95-194-00 Upgrade Failure : HVF BC

95-048-00 Upgrade Failure : IOT Duplex Module 95-195-00 Upgrade Failure : HVF BM BC

95-049-00 Upgrade Failure : IOT LC Module

95-196-00 Upgrade Failure : PFP BL

95-050-00 Upgrade Failure : LCSS 1K Application 95-200-00 Upgrade Failure : C Finisher Application

95-060-00 Upgrade Failure : LCSS 2K Application 95-201-00 Upgrade Failure : D Finisher Application

95-065-00 Upgrade Failure : LCSS 2K Boot

95-202-00 Upgrade Failure : KM Finisher Application

95-070-00 Upgrade Failure : LCSS 3K Application

95-203-00 Upgrade Failure : A Finisher Application

95-100-00 Upgrade Failure : HCSS BO HCSS Application 95-204-00 Upgrade Failure : SB Finisher Application

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
95-000-00 to 95-255-00 2-188 Xerox WorkCentre 6655 Color Multifunction Printer
95-206-00 Upgrade Failure PFM Tray 3 Application 95-300-00 to 95-302-00 Upgrade Failure: Incompatible
95-207-00 Upgrade Failure : PFM Tray 4 Application Product
95-300-00 Upgrade Failure: Incompatible Product
95-208-00 Upgrade Failure : PFM Tray 5 Application
95-301-00 Upgrade Failure: Incompatible HW
95-212-00 Upgrade Failure : DC IOT Proxy
95-302-00 Upgrade Failure: Incompatible FW
95-213-00 Upgrade Failure : DC IIT Proxy
The reload process does not start and the printer resets. If configured, an email alert is sent
95-214-00 Upgrade Failure : DC ACD and upgrade report printed. An entry is made in Upgrade History log.

95-216-00 Upgrade Failure : DC Glue Procedure

95-217-00 Upgrade Failure : DC PWS Proxy
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
95-218-00 Upgrade Failure : SS Boot Code not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
95-219-00 Upgrade Failure : SS Application Verify product model, then obtain the appropriate system software set and perform GP 9 to
reload system software. The error persists.
95-221-00 Upgrade Failure : LVF Boot Y N
Perform SCP 6 Final Actions.
95-222-00 Upgrade Failure : LVF Application
Perform a Forced AltBoot GP 9 to reload system software.
95-223-00 Upgrade Failure : LVF BM Boot

95-224-00 Upgrade Failure : LVF BM Application

95-251-00 Upgrade Failure : DC Nomad Proxy

95-254-00 Upgrade Failure : DC URD

95-255-00 Upgrade Failure : DC SCD

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Obtain a current system software set, then perform GP 9 to reload system software. The error
persists.
Y N
Perform SCP 6 Final Actions.

Perform a Forced AltBoot GP 9 to reload system software.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-189 95-000-00 to 95-255-00, 95-300-00 to 95-302-00
95-303-00, 95-304-00 Upgrade Failure: Downgrade / 95-305-00 Upgrade Failure: Platform Sync
Sidegrade 95-305-00 Upgrade Failure: Platform Sync
95-303-00 Upgrade Failure: Downgrade
The reload process does not start and the printer resets. If configured, an email alert is sent
and upgrade report printed. An entry is made in Upgrade History log.
95-304-00 Upgrade Failure: Sidegrade

The reload process does not start and the printer resets. If configured, an email alert is sent Procedure
and upgrade report printed. An entry is made in Upgrade History log. WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
Procedure not need electricity. Disconnect the power cord. Electricity can cause death or injury.
WARNING Moving parts can cause injury.
Ensure that the electricity to the machine is switched off while performing tasks that do Obtain a current system software set, then perform GP 9 to reload system software. The error
not need electricity. Disconnect the power cord. Electricity can cause death or injury. persists.
Moving parts can cause injury. Y N
Perform SCP 6 Final Actions.
Obtain a current system software set, then perform GP 9 to reload system software. The error
persists.
Y N Perform a Forced AltBoot GP 9 to reload system software.
Perform SCP 6 Final Actions.

Perform a Forced AltBoot GP 9 to reload system software.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
95-303-00, 95-304-00, 95-305-00 2-190 Xerox WorkCentre 6655 Color Multifunction Printer
OF 1 Unusual Noises Solution:
– Remove and clean the shafts and plastic bushes with antistatic fluid.
Use this procedure to isolate unusual noises.
• Knocking noise.
NOTE: Due to the intermittent nature of unusual noises, this RAP can only give guidance on Possible causes are:
how to isolate noises. This RAP will not find all possible causes. When machines become old – The feed motor not tensioned correctly, causing the drive belts to slip.
and worn, unusual noises may arise that are not covered in this RAP.
Solution:
Procedure – Replace the DADF, REP 51.1.1.
WARNING • Gear rattle.
Possible causes are:
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. – A loose meshing of the clutch and motor gears.
Moving parts can cause injury. Solution:
1. Ask the customer to demonstrate the function that generates the unusual noise. – Replace the DADF, REP 51.1.1.
2. Check the fault and error logs. Scanner
3. Cycle system power. Wait while the printer performs a normal initialization and warm-up. Possible causes and potential solutions are:
4. Run the machine in all modes. Also use the diagnostics to run individual components. Go • Grinding.
to the relevant subsection:
Possible causes are:
• DADF
– The scan carriage is moving erratically and the scan motor is generating a grinding
• Scanner sound. The teeth of the scanner drive belt are not engaging with the capstan on the
• Bypass Tray scan motor.
• Tray 1 Solution:
• Optional Feeder Assembly – Replace the Scanner, REP 51.1.14.
• Exit Path Bypass Tray
• Fans Run the following components:
DADF • Combine dC330 code 071.001, Main Drive Assembly, and 071.007, MSI Feed Solenoid to
Possible causes and potential solutions are: test Bypass Tray feed components.
• Grinding noise. Possible causes and potential solutions are:
Possible causes are: • No drive or a knocking noise.
– Feed bearings can stick, preventing the feed roll from free wheeling as the document Possible causes are:
is transported. – Incorrectly aligned or damaged parts.
– Large flat spots, confined to one or two areas on the retard roll, which causes feed – Contamination of the drive shafts and the bearings.
noise and an increase in jams. Solution:
Solution: – Check the Bypass Pick-up Assembly, PL 13.2 Item 1.
– Install a new Pick-up Module, REP 51.1.97. – Adjust or install new components as necessary.
– Replace the DADF, REP 51.1.1. Tray 1
• Noise from the DADH input tray. Remove Tray 1 and run the following components:
Possible causes are: • Enter dC330 code 071.001 to run the Main Drive Assembly.
– Document guides. Possible causes and potential solutions are:
Solution: • Squeaks.
– Clean the DADF input tray in the area below the input guides with antistatic fluid. Possible causes are:
• Squeaks from the DADH. – Contamination of the Transport Assembly shafts and bearings.
Possible causes are:
– Incorrectly aligned or damaged parts.
– DADF exit roll assembly or take away roll assembly.
Solution:
– Clean the Feed Rollers and shafts. Replace if necessary, REP 9.1.96.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-191 OF 1
 – Check Transport Assembly. Install new parts as necessary, PL 15.2. OF 2 Control Panel Touch Screen Failure
– Check the Tray for parts that are damaged or out of position.
Use this procedure to solve Control Panel display problems when the printer has power but
– Adjust or install new components as necessary. either the display is blank, is too dark, or the touch screen responds incorrectly.
Optional Feeder Assembly
Initial Actions
NOTE: Instructions are provided for Tray 2 in the Optional Feeder Assembly.
WARNING
Remove Tray 2 and run the following components: Ensure that the electricity to the machine is switched off while performing tasks that do
• Enter dC330 code 071.009 to operate the Tray 2 Feed Motor, PL 10.1 Item 9. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
• Check tray lift by removing the tray and letting the tray drop, then push the tray back in. Moving parts can cause injury.
Possible causes and potential solutions are: • Refer to GP 1 to access Service Diagnostics.
• No drive or a knocking noise from the Feed Motor. • Press the Machine Status key. Select the Tools tab. Select Device Settings, then Display
Possible causes are: Brightness. Adjust the brightness level.
– Feed Motor, PL 10.1 Item 9. • Refer to REP 1.2.1 to access Control Panel wiring.
– Worn drive gears • Check and re-seat the Control Panel cable at both ends.
– Failed Feed Clutch, PL 10.1 Item 8. • If the operating system fails to boot, observe the progress bar to determine the failure.
Solution: – Yellow progress bar = XUI code booting up.
– Check the Feed Motor and Feed Clutch connections. – Non moving green bar = Code loaded but not communicating.
– Check the Optional Feeder Assembly connection to the printer. – Moving green bar = IP Board is operational and is trying to communicate.
– Check that the tray moves freely inside the feeder assembly.
– Adjust or install new components as necessary. Procedure
Exit Path Check for +3.3V from the IP Board to the Control Panel. +3.3V is measured.
Y N
Run the following components:
Check the wiring between the IP Board and Control Panel. Repair the wiring as neces-
• Combine dC330 code 071.001 Main Drive Assembly and 071.012 exit clutch to run the sary.
exit transport.
• Combine dC330 code 071.001 Main Drive Assembly and 071.013 exit invert clutch to run Reload the system software, GP 9. The fault remains.
the duplex transport. Used for duplex and paper invert. Y N
Possible causes: Perform SCP 6 Final Actions .
• Exit Drive Assembly, PL 3.1 Item 2
Replace the Control Panel, REP 1.2.1.
• Exit Invert Drive Assembly, PL 3.1 Item 3
• Exit Chute Assembly, PL 17.1 Item 1.
Solution:
• If the noise repeats, identify the source and install new parts as necessary.
Fans
Run the following components:

• Enter dC330 code 042.001 to run the Main Fan.

• Enter dC330 code 042.003 to run the IP Fan.
Possible causes:
– Bearings in the cooling fans have worn or failed.
– Incorrectly aligned or damaged parts.
Solution:
– Check for parts that are damaged or out of position.
– Adjust or install new components as necessary.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
OF 1, OF 2 2-192 Xerox WorkCentre 6655 Color Multifunction Printer
OF 3 Status Codes and Messages
The status code format is HCC-LLL-EE where HCC is the chain, LLL is the link and EE is the
Table 1 Chain 01 Status codes
extension number. The hundreds digit H is not shown in this procedure.
Code UI Message Reason for Message Reference / Action
Example: Status code 01-510-00 Front door is open. 01-502-00 Right Side Door open The right side cover Copying and printing are not
interlock is open. available. Perform the RAP 77-
Most recent fault and messages can be displayed on the UI without entering diagnostics, by 302-00 Right Hand Door Inter-
pressing the Machine Status button on the keypad, touching the Fault tab on the UI, then select lock Open
as appropriate:
01-510-00 Front door is open The front door is open. Copying and printing are not
• Current Faults. available. Perform the RAP 77-
• Current Messages. 300-00 Front Door Interlock
• Fault History. Open.
The following tables bring together the status codes, the relevant RAP or procedure refer- 01-512-00 Bypass Tray not Bypass tray missing or Insert Bypass tray. Print and
ences, and UI messages, if generated. detected not fully inserted. Copy services can continue with
other trays.
NOTE: Not all status codes are shown in the active message window. Some status codes have 01-516-00 Rear Door Open. Printer rear door inter- Copying and printing are not
no messages. lock open. available. Perform the 77-301-00
Rear Door Interlock Open
Procedure 01-540-01 Check the settings for Paper removed or Confirm the tray 1 settings
Review fault code history, GP 2 and identify and clear any active faults. Use these tables to tray 1 added to tray 1
identify a status code or message:
01-540-02 Check the settings for Paper removed or Confirm the tray 2 settings
tray 2 added to tray 2
Status Code Tables 01-540-05 Check the settings for Paper removed or Confirm Bypass Tray settings
• Table 1 Chain 01 Status codes Bypass Tray added to Bypass Tray
• Table 2 Chain 02 Status codes 01-541-01 Tray 1 guides are not tray 1 guide setting Paper guide position does not
• Table 3 Chain 03 Status codes set to a standard size. support a standard paper size.
• Table 4 Chain 04 Status codes Adjust paper guides.
• Table 5 Chain 05 Status codes 01-541-02 Tray 2 guides are not tray 2 guide setting Paper guide position does not
set to a standard size. support a standard paper size.
• Table 6 Chain 06 Status codes
Adjust paper guides.
• Table 7 Chain 07 Status codes
01-541-05 Bypass Tray guides tray 4 guide setting Paper guide position does not
• Table 8 Chain 09 Status codes
are not set to a stan- support a standard paper size.
• Table 9 Chain 10 Status codes dard size. Adjust paper guides.
• Table 10 Chain 14 Status codes 01-545-01 Tray 1 guides are not Dedicated tray 1 closed Reload the required paper and
• Table 11 Chain 15 Status codes set properly with media size other correctly adjust the paper guides
• Table 12 Chain 16 Status codes than what was set
• Table 13 Chain 17 Status codes 01-545-02 Tray 2 guides are not Dedicated tray 2 closed Reload the required paper and
set properly with media size other correctly adjust the paper guides
• Table 14 Chain 19 Status codes
than what was set
• Table 15 Chain 20 Status codes
01-550-00 - NC status code - sys- Printing will start when a job is
• Table 16 Chain 22 Status codes tem is in power save received or a user initiates a job
• Table 17 Chain 72 to 77 Status codes mode at the machine
• Table 18 Chain 95 Status codes 01-551-00 - NC status code - sys- Printing will start when a job is
tem is in sleep mode received or a user initiates a job
at the machine

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-193 OF 3
 Table 3 Chain 03 Status codes
Code UI Message Reason for Message Reference / Action
Table 2 Chain 02 Status codes
03-518-00 Network controller The network controller Cycle system power. If the error
Code UI Message Reason for Message Reference / Action
not available. Power is not available. persists, perform 03-331-00, 03-
02-501-00 - Control Panel USB Cycle system power. If the error off then on and notify 332-00 Communication Fault with
communication error. persists, perform 02-380-00, 02- system administrator NC
381-00 UI Communication Fault. 03-520-00 No message CCM to UI communica- Cycle system power. If the error
02-502-00 - Control Panel USB Cycle system power. If the error tion not established in persists, perform 03-346-00, 03-
communication error. persists, perform 02-380-00, 02- 30 sec 347-00 Communication Fault with
381-00 UI Communication Fault. UI.
02-516-00 System Error. Power Incomplete System Cycle system power. 03-521-00 No message CCM to UI communica- Cycle system power. If the error
Off then On and Information. tion are lost persists, perform 03-346-00, 03-
notify system admin- 347-00 Communication Fault with
istrator. UI.
02-517-00 A Supplies Plan Acti- PagePack Grace The printer is in the Supplies Plan 03-535-00 Diagnostics are Machine has entered -
vation Code must be Period Active courtesy period. Enter a valid acti- active. The system is non-intrusive diagnos-
entered soon. vation code. not available. Please tic mode
02-518-00 Courtesy Prints are PagePack Grace Supplies Plan courtesy prints are wait.
depleted. Print ser- Period Expired depleted. Enter a valid activation 03-536-00 Diagnostics are The machine has -
vices are disabled. code. active. The system is entered intrusive diag-
02-520-00 The device is not A software error has Cycle system power. If the error not available. Please nostic mode
available occurred. persists, perform 02-320-00 Data wait.
Time Out Error. 03-536-01 Diagnostics are The machine has -
02-521-00 - The XEIP browser is Cycle system power. If the error active. The system is entered intrusive diag-
dead or not responding persists, perform 02-321-00 XEIP not available. Please nostic mode via the
Browser Does not Respond. wait. PWS
02-590-00 Machine power on Configurable services Cycle system power. If the error 03-546-00 Incompatible Fax Incompatible Fax soft- Perform 03-417-00 Incompatible
failed. Power off then are not stable at power persists, perform 02-390-00 Con- software detected ware detected at power FAX Software Detected.
on and notify system on figurable Services Not Stable. (upgrade required) on
administrator 03-547-00 A Fax service error Basic Fax not detected Cycle system power. If the error
has occurred. Power or confirmed persists, perform 03-401-00, 03-
off then on 403-00 FAX Not Detected.
03-548-00 Fax line 2 is unavail- Extended Fax not Cycle system power. If the error
Table 3 Chain 03 Status codes able. Notify your sys- detected or confirmed persists, perform 03-401-00, 03-
tem administrator. 403-00 FAX Not Detected.
Code UI Message Reason for Message Reference / Action
03-549-00 Fax memory error. Fax POST failure status Cycle system power.
03-504-00 The device is offline NC status code Cycle system power. Power off then on
03-504-01 and notify system
03-505-00 System error. Power The digital copier is not Cycle system power. If the error administrator
off then on and notify available persists, perform 03-316-00, 03- 03-550-00 A Fax service error Fax card is unavailable Cycle system power. If the error
system administrator 325-00, 03-355-00. has occurred. Power persists, perform 20-302-00 to
03-506-00 No message Copy Activity Report is No action needed. Off then On 20-305-00 Fax Board Hardware
Printing or Software error.
03-516-00 Scan and Copy Ser- Scanner Not Available Cycle system power. 03-551-00 A Fax Service error Fax service is unavail- Cycle system power. If the error
vices not available. has occurred. Power able persists, perform 20-331-00 to
Print Service is avail- Off then On 20-341-00 Fax Network Line 1
able. Fault

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
OF 3 2-194 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 3 Chain 03 Status codes Table 3 Chain 03 Status codes
Code UI Message Reason for Message Reference / Action Code UI Message Reason for Message Reference / Action
03-557-00 Please wait... The Power on while the IIT Cycle system power. If the error 03-578-00 System Error. Power Paper Tray error Cycle system power. If the error
Scanner is attempt- is being initialized persists, perform 62-310-00 to Off then On and persists, review fault code history
ing to recover. 62-393-00 IIT Scan Error. Notify System to identify failed component.
03-558-00 Please complete all Not defined - Administrator
steps required by the 03-581-00 System Error. Power Paper Tray error Cycle system power. If the error
external accounting Off then On and persists, review fault code history
device to access this Notify System to identify failed component.
service Administrator
03-558-01 Please insert card Not defined - 03-587-00 Tray 1 is not avail- Paper Tray error Cycle system power. If the error
into the external able. Notify your persists, perform 71-215-00 Tray
accounting device to System Administra- 1 Feeder Composition Error
access this service tor
03-558-02 Please enter access Not defined - 03-588-00 Tray 2 is not avail- Paper Tray error Cycle system power. If the error
code into external able. Notify your persists, perform 71-215-00 Tray
accounting device to System Administra- 2 Feeder Composition Error.
access this service tor
03-558-03 Please insert money Not defined - 03-597-00 Communication The document feeder is Cycle system power. If the error
into the external error. Power off then not available. Use the persists, perform 05-110-00
accounting device to on and notify sys- document glass DADF Pickup Jam
access this service tem administrator
03-558-04 Please insert key Not defined - 03-598-00 System Error. Power Unable to set Ready Cycle system power. If the error
counter into the Off then On and mode persists, perform 03-788-00
external accounting notify system admin- Failed to Exit Power Save Mode
device to access this istrator.
service
03-561-00 Please wait... the The system is recover- Wait until the system recovers. If
system is attempting ing the error persists, perform 10-
to recover 311-00 to 10-376-00 Fuser Ther- Table 4 Chain 04 Status codes
mal Errors Code UI Message Reason for Message Reference / Action
03-562-00 Some jobs may have When some jobs may Removed upon user intervention
04-561-00 System error. Power Software Logic Failure Cycle system power. If the error
been deleted have been deleted
off then on and notify persists, perform 41-388-00
03-563-00 The network control- Network service are Wait until the system recovers. If
system administrator Marking Logic Fail
ler is initializing. being established the error persists, perform, per-
04-563-00 System error. Power Image module system Cycle system power. If the error
Copy and print jobs form the 03-331-00, 03-332-00
off then on and notify fault/ hardware failure persists, review fault code history
may be delayed Communication Fault with NC
system administrator to identify failed component.
03-564-00 Image rotation is not Image rotation is not Cycle system power. If the error
04-565-00 System error. Power IME controller commu- Cycle system power. If the error
available. Power off available persists, review fault code history
off then on and notify nication failure persists, perform 45-301-00 to
then on and notify to identify failed component.
system administrator 45-305-00 IOT I/F Error
system administrator
03-565-00 System error. Power System fault Cycle system power. If the error 04-566-00 System error. Power IME controller commu- Cycle system power. If the error
off then on and notify nication failure persists, perform 45-301-00 to
off them on and persists, review fault code history
notify system admin- to identify failed component. system administrator 45-305-00 IOT I/F Error
istrator 04-567-00 Output tray Offset- OCT offset failure Cycle system power. If the error
ting is not available. occurred persists, review fault code history
Power Off then On to identify failed component.
and Notify System
Administrator.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-195 OF 3
 Table 4 Chain 04 Status codes
Code UI Message Reason for Message Reference / Action
Table 6 Chain 06 Status codes
04-568-00 The output tray is The OCT is full. Empty the tray.
Code UI Message Reason for Message Reference / Action
full. Empty the output
tray 06-515-00 Imaging Error. Power Unclearable Laser Unit Cycle system power. If the error
Off then On and fault persists, perform 62-310-00 to
Notify System 62-393-00 ROS Error
Administrator
Table 5 Chain 05 Status codes
Code UI Message Reason for Message Reference / Action
05-501-00 The document feeder is Document feeder is up. Close the DADH. If the
Table 7 Chain 07 Status codes
open error persists, perform
05-900-00 ADF Sensor Code UI Message Reason for Message Reference / Action
Static Jam 07-501-01 Tray 1 paper jam. Misfeed in Tray 1 Paper jam in Bypass and Tray 1
05-502-00 The document feeder top The DADH top cover is open. Close the DADH top area. User intervention is
cover is open cover. If the error per- required to clear the jam. If error
sists, perform 05-900- persists, perform 71-101-00
00 ADF Sensor Static Tray1 Misfeed Jam
Jam 07-501-02 Tray 1 paper jam. Misfeed in Tray 1 Paper jam in Bypass and Tray 1
05-506-00 Paper Jam in the Docu- Document Feeder Jam. Clear the jam. If the area. User intervention is
ment Feeder. error persists, perform required to clear the jam. If error
RAP 05-121-00, CVT- persists, perform 71-101-00
DADF Feed Sensor On Tray1 Misfeed Jam
Jam. 07-502-02 Tray 2 paper jam. Misfeed in Tray 2 Paper jam in Tray 2. User inter-
05-510-00 DADF paper jam DADF jam while running and Clear the paper jam. If vention needed to clear the jam.
interlock open. the error persists, per- If error persists, perform 72-101-
form RAP 05-121-00, 00 Tray2 Misfeed Jam
CVT-DADF Feed Sen- 07-505-01 Bypass tray paper Misfeed in Bypass/MSI Bypass Tray jam. User interven-
sor On Jam. Copy and jam. tion needed to clear the jam. If
Scan services are dis- error persists, perform 75-101-00
abled; Bypass Misfeed Jam
05-525-00 No message The Document feeder tray is Cycle system power. If 07-505-02 Bypass tray paper Misfeed in Bypass/MSI Bypass Tray jam. User interven-
empty the error persists, per- jam. tion needed to clear the jam. If
form 05-940-00 DADF error persists, perform 75-101-00
No Original Fail Bypass Misfeed Jam
05-535-00 No message Document feeder tray loaded - 07-508-01 Paper jam behind Jam behind Tray 2 rear Paper jam behind Rear Cover.
05-570-00 Reload sheets in Docu- DADF jam clearance. Re-sort and reload the Rear Door. cover User must clear the jam. If error
ment Feeder. document originals. persists, perform 72-102-00
Cycle system power. If Feeder Path 2 Sensor On Jam
the error persists, per- (RC2)
form 05-940-00 DADF 07-508-02 Paper jam behind Jam behind Tray 2 rear Paper jam behind Rear Cover.
No Original Fail Rear Door. cover User must clear the jam. If error
05-575-00 The number of originals Paper jam in the Document Re-sort and reload the persists, perform 72-102-00
was less than the num- Feeder. document originals. Feeder Path 2 Sensor On Jam
ber originally scanned. Cycle system power. If (RC2)
the error persists, per- 07-509-01 Paper jam behind Jam in Fuser area Paper jam behind Rear Cover.
form 05-940-00 DADF Rear Door. User must clear the jam.
No Original Fail

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
OF 3 2-196 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 7 Chain 07 Status codes
Code UI Message Reason for Message Reference / Action
Table 8 Chain 09 Status codes
07-509-02 Paper jam behind Jam in Fuser area Paper jam behind Rear Cover.
Code UI Message Reason for Message Reference / Action
Rear Door. User must clear the jam.
07-510-01 Paper jam behind Jam in registration area Paper jam behind Rear Cover. 09-503-00 The Imaging Unit (K) Imaging Unit (K) is not Cycle system power. If the error
Rear Door. User must clear the jam. If error is not compatible. compatible. persists, perform RAP 91-914-00
persists, perform 77-900-00 IOT to 91-921-00 K Drum Cartridge
Static Jam Error.
07-510-02 Paper jam behind Jam in registration area Paper jam behind Rear Cover. 09-504-00 The Imaging Unit (C) The Imaging Unit (C) is Cycle system power. If the error
Rear Door. User must clear the jam. If error is not compatible. not compatible. persists, perform RAP 91-920-00
persists, perform 77-900-00 IOT to 91-923-00 Drum Y CRUM
Static Jam Data Broken.
07-513-01 Tray 1 is open Dedicated tray 1 is open Cycle system power. If the error 09-505-00 The Imaging Unit (M) The Imaging Unit (M) is Cycle system power. If the error
persists, review fault code history is not compatible. not compatible. persists, perform RAP 91-920-00
to identify failed component. to 91-923-00 Drum Y CRUM
Data Broken.
07-513-02 Tray 2 is open Dedicated tray 2 is open Cycle system power. If the error
persists, review fault code history 09-506-00 The Imaging Unit (Y) The Imaging Unit (Y) is Cycle system power. If the error
to identify failed component. is not compatible. not compatible. persists, perform RAP 91-920-00
to 91-923-00 Drum Y CRUM
07-514-01 Tray 1 is open Adjustable tray 1 is Cycle system power. If the error
Data Broken.
open persists, review fault code history
to identify failed component. 09-508-00 Toner Waste Car- Reorder Toner Waste Reorder Toner Waste cartridge
07-514-02 Tray 2 is open Adjustable tray 2 is Cycle system power. If the error tridge near Full cartridge but DO NOT but DO NOT replace until
replace until prompted. prompted. Perform RAP 91-400-
open persists, review fault code history
00, Waste Bottle near full. Device
to identify failed component.
services are unaffected.
07-520-02 Optional tray static Optional tray - Static Paper jam behind Rear Cover.
09-521-00 Imaging Units Life Imaging Unit Kit is at Imaging Unit Kit has reached end
jam. jam Regi User must clear the jam. If error
Over. end of life (over). Hard of life. Replace the Imaging Unit
persists, perform RAP 77-901-00
stop. Kit, perform RAP 93-922 to 93-
Feeder Static Jam.
924, Toner Cartridge is Empty.
07-535-00 Bypass Tray is Bypass Tray is empty Cycle system power. If the error
Print and Copy services are dis-
empty. Add paper. persists, review fault code history abled.
to identify failed component.
09-533-00 Reorder Imaging Kit. Imaging Unit Kit is at Cycle system power. If the error
07-544-00 Tray 1 is empty. Add Tray 1 is empty Cycle system power. If the error
end of life. persists, perform 91-913-00 K
paper. persists, review fault code history
Drum Cartridge Dead Stop Error
to identify failed component.
09-540-00 Toner (Y) not in posi- Tonor CRUM Y not in Cycle system power. If the error
07-545-00 Tray 2 is empty. Add Tray 2 is empty Cycle system power. If the error tion. Position persists, perform 93-970-00 to
paper. persists, review fault code history
93-973-00 Toner CRUM Not in
to identify failed component.
Position.
07-546-01 Unexpected paper Tray 1 media or type Cycle system power. If the error 09-541-00 Toner (M) not in posi- Tonor CRUM M not in Cycle system power. If the error
size or type detected mismatch detected persists, review fault code history tion. Position persists, perform 93-970-00 to
from Tray 1 to identify failed component.
93-973-00 Toner CRUM Not in
07-546-02 Unexpected paper Tray 2 media or type Cycle system power. If the error Position.
size or type detected mismatch detected persists, review fault code history
09-542-00 Toner (C) not in posi- Tonor CRUM C not in Cycle system power. If the error
from Tray 2 to identify failed component.
tion. Position persists, perform 93-970-00 to
07-546-05 Unexpected paper Bypass Tray media or Cycle system power. If the error 93-973-00 Toner CRUM Not in
size or type detected type mismatch detected persists, review fault code history Position.
from Bypass Tray to identify failed component.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-197 OF 3
 Table 8 Chain 09 Status codes Table 8 Chain 09 Status codes
Code UI Message Reason for Message Reference / Action Code UI Message Reason for Message Reference / Action
09-543-00 Toner (K) not in posi- Tonor CRUM K not in Cycle system power. If the error 09-565-00 Yellow Toner near Reorder Yellow Toner Reorder Yellow Toner; do not
tion. Position. persists, perform 93-970-00 to end of life. Cartridge (Y) but DO replace until prompted. If the
93-973-00 Toner CRUM Not in NOT replace until error persists, perform RAP 93-
Position. prompted. 400-00, 93-424, Toner Cartridge
09-548-00 There is a problem Xerographic system Cycle system power. If the error Near Empty. Device services are
with the Xerographic error. persists, perform 91-914-00, 91- unaffected.
system. Call for 921-00 K Drum Cartridge Error 09-566-00 Magenta Toner near Reorder Magenta Toner Reorder Magenta Toner; do not
assistance. end of life. (M) but DO NOT replace until prompted. If the
09-553-00 Imaging Unit (K) Imaging Unit CRUM (K) Cycle system power. If the error replace until prompted. error persists, perform RAP 93-
missing missing. persists, perform RAP 93-970-00 400-00, 93-424, Toner Cartridge
to 93-973-00 Toner CRUM Not in Near Empty. Device services are
Position. unaffected.
09-554-00 Imaging Unit (C) Imaging Unit CRUM (C) Cycle system power. If the error 09-567-00 Cyan Toner near end Reorder Cyan Toner (C) Reorder Cyan Toner; do not
missing missing persists, perform RAP 93-970-00 of life. but DO NOT replace replace until prompted. If the
to 93-973-00 Toner CRUM Not in until prompted. error persists, perform RAP 93-
Position. 400-00, 93-424, Toner Cartridge
Near Empty. Device services are
09-555-00 Imaging Unit (M) Imaging Unit CRUM (M) Cycle system power. If the error
unaffected.
missing missing persists, perform RAP 93-970-00
to 93-973-00 Toner CRUM Not in 09-568-00 Black Toner near end Reorder Black Toner (K) Reorder Black Toner; do not
Position. of life. but DO NOT replace replace until prompted. If the
until prompted. error persists, perform RAP 93-
09-556-00 Imaging Unit (Y) Imaging Unit CRUM (Y) Cycle system power. If the error
425-00, 93-912-00, K Toner Car-
missing missing persists, perform RAP 93-970-00
tridge Life Near End. Device ser-
to 93-973-00 Toner CRUM Not in
vices are unaffected
Position.
09-575-00 Imaging Unit fail Imaging Unit CRUM Cycle system power. If the prob-
09-558-00 Yellow Toner (Y) is Yellow Toner (Y) is not Cycle system power. If the error
Comm Failure. lem persists, perform RAP 91-
not Compatible Compatible persists, perform RAP 93-925-00
917-00 to 91-919-00 Drum
to 93-932-00 Toner Cartridge
CRUM Comm Fail. Print and
Error. Print and Copy services
Copy services are disabled.
are disabled.
09-559-00 Magenta Toner (M) is Magenta Toner (M) is Cycle system power. If the error 09-578-00 Transfer Unit missing Transfer Belt Unit miss- Cycle system power. If the prob-
ing or not seated cor- lem persists, perform RAP 94-
not Compatible not Compatible persists, perform RAP 93-925-00
rectly. 910-00 BTR Unit Not in Position.
to 93-932-00 Toner Cartridge
Print and Copy services are dis-
Error. Print and Copy services
abled.
are disabled.
09-560-00 Cyan Toner (C) is not Cyan Toner (C) is not Cycle system power. If the error 09-582-00 System Error. Power Software Error has Cycle system power. If the error
Off then On and Occurred persists, use GP 9 to reload sys-
Compatible Compatible persists, perform RAP 93-925-00
to 93-932-00 Toner Cartridge notify system admin- tem software.
istrator.
Error. Print and Copy services
are disabled. 09-584-00 Please wait... Adjust- Xerographic adjust- Wait until the system recovers. If
ments are in ment in progress. the error persists, cycle system
09-561-00 Black Toner (K) is toner crum mismatch Cycle system power. If the error
progress. power. If necessary, review fault
not compatible. (K) persists, perform RAP 93-925-00
code history to identify failed
to 93-932-00 Toner Cartridge
component.
Error

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
OF 3 2-198 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 8 Chain 09 Status codes Table 8 Chain 09 Status codes
Code UI Message Reason for Message Reference / Action Code UI Message Reason for Message Reference / Action
09-586-00 Magenta Toner The Magenta Toner (M) Replace the Magenta Toner (M). 09-639-00 Fuser is missing or Fuser Missing Fuser missing or not installed
empty. is empty. Replace it If the error persists, perform RAP misinstalled. correctly. User intervention
NOW. 93-922-00 to 93-924, Toner Car- needed to install or lock Fuser. If
tridge Empty. Print and Copy ser- the error persists, perform 10-
vices are disabled. 317-00, 10-902-00 Fuser Missing
09-587-00 Cyan Toner empty. The Cyan Toner (C) is Replace the Cyan Toner (C). If 09-661-00 Confirm if Fuser was Fuser cover confirma- Fuser replaced. User intervention
empty. Replace it the error persists, perform RAP replaced. tion status is required at the local user inter-
NOW. 93-922-00 to 93-924, Toner Car- face to confirm the replacement
tridge Empty. Print and Copy ser- of the Fuser.
vices are disabled. 09-663-00 Confirm if Bias Bias Transfer Roll Confirm replacment at the Con-
09-588-00 The Black Toner is The Black Toner (K) is Replace the Toner Cartridge. If Transfer Roll was replacement yes/no sta- trol Panel.
empty. empty. Replace them the error persists, perform 93- replaced. tus
NOW. 425-00, 93-912-00, K Toner Car-
tridge Life Near End.
09-589-00 The Toner Waste The Toner Waste Car- The Toner Waste Cartridge is full.
Cartridge is full. tridge is full. Replace it Replace the Toner Waste Con- Table 9 Chain 10 Status codes
Replace it NOW. NOW. tainer, perform RAP 91-911-00,
Code UI Message Reason for Message Reference / Action
Waste Bottle Full. Printing and
copying services are not aval- 10-505-00 The Fuser is warm- The Fuser is warming Cycle system power. If the error
able. ing up. Printing may up. Printing may be persists, perform 10-311-00 to
be delayed. delayed 10-376-00 Fuser Thermal Error
09-594-00 Imaging Unit NEAR Imaging Unit Kit is near Imaging Unit Kit is near end of
EOL end of life. life. Reorder the Imaging Unit 10-523-00 Transfer Unit EOL. The Transfer Belt Kit Transfer Belt Kit has reached end
Kit; do not replace until prompted. needs replacement. of life. Replace the Transfer Belt
When prompted, perform RAP Replace Soon. (no hard Kit soon. Image Quality may be
93-922-00 to 93-924, Toner Car- stop). degraded. Perform RAP 94-419-
tridge is Empty. 00, 94-422-00 BTR Near Life
End.
09-596-00 Yellow Toner empty. The Yellow Toner (Y) is Replace the Yellow Toner (Y). If
empty. Replace it the error persists, perform RAP 10-524-00 Transfer Unit near Reorder Transfer Belt Transfer Belt Kit has reached end
NOW. 93-922-00 to 93-924, Toner Car- EOL. Kit but DO NOT replace of life. Replace the Transfer Belt
tridge Empty. Print and Copy ser- until prompted. Kit soon. Image Quality may be
vices are disabled. degraded. Perform RAP 94-419-
00, 94-422-00 BTR Near Life
09-602-00 Fuser Dead Stop Fuser Llfe over - dead Replace the Fuser Assembly.
End.
stop Print and Copy services are avail-
able, but Image Quality may be 10-527-00 Fuser System error. Fuser component/sen- Cycle system power. If the error
degraded. Perform RAP 10-420- Call for assistance. sor fault persists, perform 10-311-00 to
00, 10-421-00 Fuser End of Life. 10-376-00 Fuser Thermal Error
09-612-00 Fuser Past EOL Fuser is PAST End of Replace the Fuser Assebly soon.
Life Print and Copy services are avail-
able, but Image Quality may be
degraded. Perform RAP 10-420- Table 10 Chain 14 Status codes
00, 10-421-00 Fuser End of Life.
Code UI Message Reason for Message Reference / Action
09-622-00 Fuser near EOL Fuser Near End of Life Reorder the Fuser; do not
14-517-00 Scanner fault. Power Scanner fault. Cycle system power. If the error
replace until prompted. When
off then on and notify persists, perform 62-310-00 to
prompted, perform RAP 10-420-
system administrator 62-393-00 or review fault code
00, 10-421-00 Fuser End of Life.
history to identify failed compo-
nent.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-199 OF 3
 Table 12 Chain 16 Status codes
Code UI Message Reason for Message Reference / Action
Table 11 Chain 15 Status codes
16-510-00 Network services involving Scan to E-mail process Cycle system power. If the
Code UI Message Reason for Message Reference / Action
scan to E-mail are not failed problem persists check net-
15-571-00 Unauthorized ban- Banknote detection sys- Cycle system power. If the error available. Notify system work connections
knote image reproduc- tem faulted. persists, perform 62-790-00 administrator.
tion not supported. PreIPS XFail 16-511-00 Network services related Internet Fax process Cycle system power. If the
to Internet Fax are not failed problem persists check net-
available. Notify system work connections
administrator.
Table 12 Chain 16 Status codes 16-512-00 Some Network Services USB Process Death Cycle system power. If the
Code UI Message Reason for Message Reference / Action involving USB are not problem persists check USB
available. Notify your Sys- configuration.
16-501-00 Network Services with Job Job based accounting Cycle system power. If the tem Administrator.
Based Accounting not not enough DC mem- error persists, perform 16-
16-513-00 Some network services Simple service discov- Cycle system power.
available. Notify your Sys- ory. 930-19 to 16-939-19 Other
involving SSDP are not ery protocol (SSDP)
tem Administrator. Network Faults 17
available. Notify your sys- failed.
16-502-00 The network controller is Network Controller Cleared when the network tem administrator.
about to be reset. reset is about to occur controller reset is initiated.
16-514-00 Network services involving Post office protocol Cycle system power.
16-503-00 System Error. Power Off Incomplete System Cycle system power. scan to E-mail are not (POP3) (for inbound
then On and notify system Information. available. Notify system IFAX messages) pro-
administrator. administrator cess failed
16-504-00 Some Network Services Generic Fault frame The DDNS address resolu- 16-517-00 Network services involving SMTP process failed Cycle system power.
involving DDNS are not with DDNS disabled tion process has failed. scan to E-mail are not
available. Notify your Sys- Cycle system power. If the available. Notify system
tem Administrator. error persists, check the administrator
DDNS server’s network con-
16-518-00 Network services using Web services edge cli- Cycle system power. If the
nection.
WS edge client are not ent interface does not error persists, check network
16-505-00 Some network services Insufficient memory for Cycle system power. If the available. Notify your sys- work connections.
involving scan to E-mail E-mail error persists, check the net- tem administrator
are not available. Notify work connections
16-519-00 Network services using Web services client Cycle system power. If the
system administrator.
WS edge client are not controller does not error persists, check network
16-506-00 Your administrator is Your administrator is The system administrator is available. Notify your sys- work connections.
reconfiguring the system. reconfiguring the sys- saving the machine configu- tem administrator
Services will not be avail- tem ration to a remote station.
16-520-00 Network services using Web services server Cycle system power. If the
able.
WS edge client are not controller interface error persists, check network
16-507-00 Some network services SLP process stopped. Cycle system power. available. Please notify does not work. connections.
involving SLP are not Some network control- the system administrator
available. Notify your sys- ler services are not
16-521-00 Some network services The network control- Cycle system power. If the
tem administrator. available
involving CPI are not avail- ler’s CPI service pro- error persists, perform 16-
16-508-00 Autonet functions are not Autonet is not available Cycle system power. Printing able. Notify your system cess has stopped 800-09 to 16-809-47 Other
available. Notify your sys- can continue if other network administrator Network Faults 5
tem administrator. protocols are used
16-522-00 Some network services The network control- Cycle system power. If the
16-509-00 Some network services Insufficient memory for Cycle system power. Printing involving job log are not ler’s job log service error persists, perform 16-
involving Internet Fax are internet Fax can continue if other network available. Notify system process has stopped 800-09 to 16-809-47 Other
not available. Notify sys- protocols are used administrator Network Faults 5
tem administrator.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
OF 3 2-200 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 12 Chain 16 Status codes Table 12 Chain 16 Status codes
Code UI Message Reason for Message Reference / Action Code UI Message Reason for Message Reference / Action
16-523-00 Some network services The network control- Cycle system power. If the 16-540-00 Ensure the USB Wireless USB Wireless Net- Ensure cables are properly
with job tracker are not ler’s job tracker service error persists, perform 16- Network Interface is prop- work not connected. connected.
available. Notify your sys- process has stopped 800-09 to 16-809-47 Other erly connected.
tem administrator Network Faults 5 16-544-00 Network cable unplugged An Ethernet cable is Ensure cables are properly
16-524-00 Some network services The network control- Cycle system power. If the unplugged connected
with Kerberos are not ler’s Kerberos service error persists, perform 16- 16-546-00 System Error. Power Off Incomplete System Cycle system power.
available. Notify your sys- process has stopped 800-09 to 16-809-47 Other then On and notify system Information. Logon
tem administrator Network Faults 5 administrator. Service Data is corrupt.
16-525-00 Scan to distribution ser- The network control- Cycle system power. If the 16-547-00 System Error. Power Off Incomplete System Cycle system power.
vices are not available. ler’s scan to distribu- error persists, perform 16- then On and notify system Information.SR
Notify your system admin- tion service process 810-00 to 16-819-47 Other administrator. defaults unable to load.
istrator has stopped Network Faults 6 16-548-00 System Error. Power Off Incomplete System Cycle system power.
16-526-00 Some network services The network control- Cycle system power. If the then On and notify system Information. SR data-
involving SMB are not ler’s SMB service pro- error persists, perform 16- administrator. base error.
available. Notify your sys- cess has stopped. 810-00 to 16-819-47 Other
16-550-00 Device entering SW Device entering SW The Device entered a soft-
tem administrator Network Faults 6
upgrade mode. ALL jobs upgrade mode - all ware upgrade mode (all jobs
16-527-00 Some network services The network control- Cycle system power. If the will be cancelled. jobs will be canceled. will be deleted). No user
involving TCP/IP are not ler’s TCP/IP service error persists, perform 16- intervention is required.
available. Notify your sys- process has stopped. 810-00 to 16-819-47 Other Device services are unavail-
tem administrator Network Faults 6 able until the software
16-528-00 Network services using The network control- Cycle system power. If the upgrade process has com-
WS scan temp are not ler’s WS scan temp error persists, perform 16- pleted.
available. Notify your sys- service process has 810-00 to 16-819-47 Other 16-551-00 Accounting out of memory. Network controller - Accounting administrator
tem administrator stopped. Network Faults 6 Notify your system admin- accounting log is full or needs to retrieve accounting
16-529-00 Network services with The network control- Cycle system power. If the istrator a hard disk full state data log from the system
Scan compressor are not ler’s Scan compressor error persists, perform 16- exists
available. Notify your sys- service process has 810-00 to 16-819-47 Other 16-552-00 Software option codes do Software Option codes Cycle system power.
tem administrator stopped. Network Faults 6 not match. do not match.
16-531-00 System Error. Power Off Incomplete System Cycle system power. 16-553-00 Additional memory is Scan-to File memory Cycle system power. Hard-
then On and Notify Sys- Information required to support scan to shortage ware must be added or
tem Administrator. file. Notify your system replaced.
16-533-00 Service limit exceeded. Controller software Remove some existing ser- administrator
New services will not be service limit exceeded vices to enable new services 16-554-00 Workflow scanning hard- Hardware must be Cycle system power. Hard-
available until some ser- to be added. Machine ser- ware must be added or added or replaced. ware must be added or
vices are removed vices are available but may replaced. Notify your sys- replaced.
be degraded tem administrator.
16-535-00 Immediate job overwrite Immediate job over- Cycle system power. If the 16-555-00 Insufficient memory for LAN Fax memory Additional memory required
failed. Perform an on write failed error persists, perform 16- Fax job. Notify your sys- shortage to support Fax. The Fax ser-
demand overwrite immedi- 710-00 to 16-750-11 tem administrator. vice is not available
ately Unable To Create Client 16-556-00 802.1X authentication Ensure 802.1X settings Check printer settings to see
Handle failed, the device will on the printer match if they match server settings.
16-536-00 Network controller error. The XSA service is Cycle system power. If the remain offline until the 802.1X network Cycle system power. If the
Some network services unavailable. Network error persists, perform 16- resolved. Please contact authentication settings. error persists, perform 16-
not available. Notify sys- controller error 674-00 to 16-709-00 XSA the system administrator. 780-00 to 16-789-47 Other
tem administrator. Database Error Network Faults 3

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-201 OF 3
 Table 12 Chain 16 Status codes Table 12 Chain 16 Status codes
Code UI Message Reason for Message Reference / Action Code UI Message Reason for Message Reference / Action
16-557-00 Network services using DC Platform Recovery Cycle system power. If the 16-569-00 Network services involving Network controller - Cycle system power. If the
DC platform recovery not Failed error persists, review fault a parallel port are not parallel ports are not error persists, perform 16-
available. Notify system code history to identify failed available. Notify system available 761-47 to 16-769-95 Other
administrator component. administrator Network Faults 1
16-558-00 Network services using Network controller DC Cycle system power. If the 16-570-00 Some network services Network controller - an Cycle system power. If the
DC platform recovery not communications failed error persists, review fault involving HTTP are not HTTP interpreter error error persists, perform 16-
available. Notify system code history to identify failed available. Notify your sys- has occurred, causing 761-47 to 16-769-95 Other
administrator component. tem administrator the process to fail Network Faults 1
16-559-00 Network services using Network controller Check the BOOTP Server 16-571-00 Network printing disabled. Network controller - Cycle system power. If the
BOOTP initialization not BOOTP initialization and its network connection. If Notify your system admin- print service has failed error persists, perform 16-
available. Notify system failure error persists, cycle system istrator 770-09 to 16-779-95 Other
administrator power. Network Faults 2
16-560-00 Some network services Some processes on Cycle system power. If the 16-572-00 Network printing disabled. Network controller - Cycle system power. If the
are not available due to a the network controller error persists, perform 16- Notify your system admin- print service has failed error persists, perform 16-
process error. Notify sys- have failed 770-09 to 16-779-95 Other istrator 770-09 to 16-779-95 Other
tem administrator. Network Faults 2 Network Faults 2
16-561-00 Scan to file not available. Network controller - Cycle system power. If the 16-573-00 Network printing disabled. Network controller - IP Cycle system power. If the
Power off then on and scan to file processes error persists, perform 16- Notify your system admin- print service has failed error persists, perform 16-
notify system administra- have failed 759-46 to 16-760-46 Fail to istrator. 770-09 to 16-779-95 Other
tor Enable Process Network Faults 2
16-562-00 Some network services Network controller - the Cycle system power. If the 16-574-00 Job queue error. Power off IP queue utility has Cycle system power. If the
involving LPD are not line printer daemon error persists, perform 16- then on and notify system failed. Only a partial list error persists, perform 16-
available. Notify your sys- (LPD) process has 760-47 to 16-761-46 File administrator is available for display 770-09 to 16-779-95 Other
tem administrator failed Error at this time Network Faults 2
16-563-00 Some network services Network controller - the Cycle system power. If the 16-575-00 The network controller The network controller Cycle system power. If the
involving Novell are not Novell netware con- error persists, perform 16- connection is about to be IP registration service error persists, perform 16-
available. Notify your sys- nectivity process has 761-47 to 16-769-95 Other reset process has stopped 160-09 NC Registration Ser-
tem administrator failed Network Faults 1 vice Process Death
16-564-00 Some network services Network controller - the Cycle system power. If the 16-576-00 Network controller con- The network controller Cycle system power. If the
involving NetBios are not NetBIOS connectivity error persists, perform 16- nection is about to be IP event notification error persists, perform 16-
available. Notify system process has failed 761-47 to 16-769-95 Other reset service process has 161-09 to 16-164-09 Cannot
administrator Network Faults 1 stopped Send Reg Event / List
16-565-00 Network services involving Apple Talk printing Cycle system power. If the Access Failure
Apple Talk are not avail- error. Printing can con- error persists, perform 16- 16-577-00 Network controller con- The network controller Cycle system power. If the
able. Notify your system tinue using other sub- 761-47 to 16-769-95 Other nection is about to be IP platform manager error persists, perform 16-
administrator mission methods Network Faults 1 reset service process has 161-09 to 16-164-09 Cannot
16-567-00 Some network services Network controller - a Cycle system power. If the stopped Send Reg Event / List
involving PostScript are PostScript interpreter error persists, perform 16- Access Failure
not available. Notify your error has occur, caus- 761-47 to 16-769-95 Other 16-578-00 Incomplete system infor- The network controller Cycle system power. If the
system administrator ing the process to fail Network Faults 1 mation. Power off then on IP fault log service pro- error persists, perform 16-
16-568-00 Some network services Network controller - a Cycle system power. If the and notify system adminis- cess has stopped 770-09 to 16-779-95 Other
involving PCL are not PCL interpreter error error persists, perform 16- trator Network Faults 2
available. Notify your sys- has occurred, causing 761-47 to 16-769-95 Other 16-579-00 Job status not available. The network controller Cycle system power. If the
tem administrator the process to fail Network Faults 1 Power off then on and IP completed job log error persists, perform 16-
notify system administra- service has stopped 770-09 to 16-779-95 Other
tor Network Faults 2

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
OF 3 2-202 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 12 Chain 16 Status codes Table 12 Chain 16 Status codes
Code UI Message Reason for Message Reference / Action Code UI Message Reason for Message Reference / Action
16-580-00 Incomplete system infor- The network controller Cycle system power. If the 16-594-00 Some network services Network controller - Cycle system power. If the
mation. Power off then on IP configuration utility error persists, perform 16- involving RARP are not RARP address resolu- error persists, perform 16-
and notify system adminis- process has stopped 770-09 to 16-779-95 Other available. Notify your sys- tion has failed 800-09 to 16-809-47 Other
trator Network Faults 2 tem administrator. Network Faults 5
16-581-00 Some network diagnostic The network controller Cycle system power. If the 16-595-00 LAN Fax service error. The network controller Cycle system power. If the
services are not available. IP diagnostic service error persists, perform 16- Power off then on and LAN Fax service has error persists, perform 16-
Notify your system admin- process has stopped 770-09 to 16-779-95 Other notify system administra- failed 790-09 to 16-799-47 Other
istrator Network Faults 2 tor Network Faults 4
16-582-00 Some network authentica- The network controller Cycle system power. If the 16-596-00 Some network accounting Some network control- Cycle system power. If the
tion services unavailable. IP authentication SPI error persists, perform 16- services are not available. ler services are not error persists, perform 16-
Notify your system admin- process has stopped 780-00 to 16-789-47 Other Notify your system admin- available 790-09 to 16-799-47 Other
istrator Network Faults 3 istrator. Network Faults 4
16-583-00 Incomplete system infor- The network controller Cycle system power. Printing 16-597-00 Some network services The network controller Cycle system power. If the
mation. Power off then on IP counters utility pro- and scanning can continue. involving TIFF are not TIFF interpreter has error persists, perform 16-
and notify system adminis- cess has stopped available. Notify your sys- failed 790-09 to 16-799-47 Other
trator tem administrator. Network Faults 4
16-584-00 Network controller con- The network controller Cycle system power. If the 16-598-00 Some network services Network controller - Cycle system power. If the
nection is about to be document manager error persists, perform 16- involving TCP/IP are not TCP/IP address is error persists, perform 16-
reset agent process has 161-09 to 16-164-09 Cannot available. Notify your sys- already in use on the 770-09 to 16-779-95 Other
stopped Send Reg Event / List tem administrator. network Network Faults 2
Access Failure 16-599-00 Network services with Port Raw TCP/IP printing Cycle system power. If the
16-585-00 Incomplete system infor- The network controller Cycle system power. If the 9100 process are not (port 9100) process error persists, perform 16-
mation. Power off then on IP configuration syn- error persists, perform 16- available. Notify system has failed 790-09 to 16-799-47 Other
and notify system adminis- chronization process 780-00 to 16-789-47 Other administrator Network Faults 4
trator has stopped Network Faults 3 16-600-00 System error. Perfor- Disk partition thresh- Cycle system power.
16-586-00 Incomplete system infor- The network controller Cycle system power. If the mance degraded. Notify old has been
mation. Power off then on agent process has error persists, perform 16- system administrator. exceeded.
and notify system adminis- stopped 780-00 to 16-789-47 Other
trator Network Faults 3
16-589-00 Network services involving The network controller Cycle system power. If the
a serial port are not avail- serial port connectivity error persists, perform 16- Table 13 Chain 17 Status codes
able. Notify system admin- has failed 780-00 to 16-789-47 Other
Code UI Message Reason for Message Reference / Action
istrator. Network Faults 3
16-590-00 Network connectivity con- The network controller Cycle system power. If the 17-510-00 Duplicate IPv6 address Duplicate IPv6 address Reconfigure with a unique
figuration server not avail- CCS process has error persists, perform 16- detected. Reconfigure detected address. Cycle system
with a unique address power. Copy and Fax ser-
able. Notify your system failed 780-00 to 16-789-47 Other
vices (if installed) can con-
administrator Network Faults 3
tinue.
16-591-00 Some network services Network controller Cycle system power. If the
17-512-00 DHCPv6 services are not DHCPv6 Failure status Cycle system power. Printing
involving Ethernet are not Ethernet process has error persists, perform 16-
available. Notify your sys- can continue with other sub-
available. Notify system failed 800-09 to 16-809-47 Other
tem administrator. mission methods.
administrator. Network Faults 5
16-593-00 Some network services Network controller - Cycle system power. If the 17-513-00 Duplicate IPv4 address Duplicate IPv4 address Cycle system power.
involving DHCP are not DHCP address resolu- error persists, perform 16- detected. Reconfigure detected.
with a unique address
available. Notify your sys- tion has failed 800-09 to 16-809-47 Other
tem administrator. Network Faults 5

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-203 OF 3
 Table 13 Chain 17 Status codes Table 13 Chain 17 Status codes
Code UI Message Reason for Message Reference / Action Code UI Message Reason for Message Reference / Action
17-514-00 The machine is not avail- External accounting Administrator intervention 17-562-00 No communications with Registration with edge User intervention is required
able. Accounting commu- device communication required to check the con- Xerox SMart eSolutions server fails to review SMart eSolutions
nication failure failure nection to the external server. Contact system settings. Cycle system
accounting device. administrator power. If the error persists,
17-551-00 Server Fax service can- Server Fax service can- Cycle system power. If the perform 16-891-00, 16-892-
not register. Power off not register error persists, perform 16- 00 Edge Server Error
then on and notify system 980-00 to 16-989-35 Other 17-563-00 No communications with Communication with User intervention is required
administrator Network Faults 22 Xerox SMart eSolutions edge server fails to review SMart eSolutions
17-552-00 Reprint Saved Jobs Ser- Reprint Saved Jobs Cycle system power. If the server. Contact system settings. Cycle system
vice cannot Register. Service cannot Register error persists, perform 16- administrator power. If the error persists,
Power Off then On. Notify 752-00 to 16-752-47 perform 16-891-00, 16-892-
System Administrator. Invalid File Details 00 Edge Server Error
17-553-00 Internet Fax service can- Internet Fax service Cycle system power. If the 17-565-00 Extensible services are EIP service not Cycle system power.
not register. Power off cannot register error persists, perform 16- not responding. Power responding
then on and notify system 950-19 to 16-959-19 Other machine off then on
administrator Network Faults 19 17-570-00 No message Communication with User intervention is required
17-554-00 E-mail service cannot reg- Email Service cannot Cycle system power. If the NNTP server failed to verify network time proto-
ister. Power off then on Register. error persists, perform 16- col server settings, operabil-
and notify system admin- 950-19 to 16-959-19 Other ity and machine time.
istrator Network Faults 19 17-580-00 Please wait. Disk encryp- Disk encryption is in No user intervention is
17-556-00 The server Fax service Server Fax service can- Cycle system power. If the tion operation is in progress required. Machine is unavail-
cannot un-register. Notify not un-register error persists, perform 16- progress. able, please wait.
your system administrator 980-00 to 16-989-35 Other 17-590-00 Image overwrite is in Image overwrite (ODIO) No service action required,
Network Faults 22 progress… the machine is is in progress please wait for the overwrite
17-557-00 The internet Fax service Internet Fax service Cycle system power. If the offline. to finish.
cannot un-register. Notify cannot un-register error persists, perform 16- 17-591-00 On Demand Overwrite HDD or FAX On Cycle system power. If the
your system administrator 950-19 to 16-959-19 Other Failed. Perform an On Demand Overwrite error persists, perform 16-
Network Faults 19 Demand Overwrite imme- Failed. 710-00 to 16-750-11 Unable
17-558-00 The E-mail service can- E-mail service cannot Cycle system power. If the diately. To Create Client Handle or
not un-register. Notify your un-register error persists, perform 16- 20-710-00, 20-711-00 Fax
system administrator 950-19 to 16-959-19 Other Card Overwrite Errors as
Network Faults 19 appropriate.
17-559-00 Workflow scanning ser- Network scanning ser- Cycle system power. If the
vice cannot register. vice cannot register. error persists, perform 16-
Power off then on and 980-00 to 16-989-35 Other
notify system administra- Network Faults 22 Table 14 Chain 19 Status codes
tor Code UI Message Reason for Message Reference / Action
17-560-00 The workflow scanning Network scanning ser- Cycle system power. If the 19-502-00 Please wait, freeing Out of memory No user intervention required,
service cannot un-register. vice cannot un-register. error persists, perform 16-
memory resources. The machine please wait, printing will resume
Notify your system admin- 980-00 to 16-989-35 Other has run out of image after memory is freed. Other
istrator Network Faults 22 processing memory for machine services are unaf-
17-561-00 The reprint saved jobs Reprint saved jobs ser- Cycle system power. If the the current job fected. If the error persists, per-
service cannot un-register. vice cannot un-register. error persists, perform 16- form 19-401-00, 19-402-00 Out
Notify your system admin- 752-66 to 16-753-28 Scan to of Memory
istrator FAX Registration Error

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
OF 3 2-204 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 14 Chain 19 Status codes
Code UI Message Reason for Message Reference / Action
Table 15 Chain 20 Status codes
19-505-00 Some jobs may have Compressor DVMA Confirm the UI message and re-
Codes UI Message Reason for Message Reference / Action
been deleted time-out. Current job scan the job. If the error per-
has been deleted sists, perform the 19-403-00 20-544-00 Please wait... The Fax The Fax service is ini- The Fax service is re-starting.
Out of Memory - Job in EPC service is initializing tializing No user intervention is
19-506-00 Immediate job over- Immediate job over- Administrator intervention is required. Printing and other
write failed. Perform write failed required to perform an on machine services are avail-
an on demand over- demand image overwrite imme- able
write immediately diately. Printing can continue. 20-545-00 Fax job could not be A Fax job could not be Fax job could not be sent, re-
Other machine services are sent at this time, please sent try. Printing and other machine
unaffected. try again services are available
19-507-00 On Demand Overwrite HDD or FAX On Cycle system power. If the error 20-546-00 Fax memory is low. Not enough memory to Cycle system power. If the
Failed. Perform an On Demand Overwrite persists, perform 16-710-00 to Contact your system use Fax service error persists, perform 20-323-
Demand Overwrite Failed. 16-750-11 Unable To Create administrator 00, 20-324-00 Fax System
immediately. Client Handle or 20-710-00, 20- Memory is Low
711-00 Fax Card Overwrite 20-547-00 Fax memory is low. Fax memory is low User intervention is required to
Errors as appropriate. Contact your system delete unnecessary mailbox
19-510-00 Please wait.... the System is attempting to No service action required. administrator files or Fax jobs stored for poll-
system is attempting to recover. Image disk Printing and other machine ser- ing. Cycle system power. If the
recover error vices are unaffected error persists, perform 20-323-
19-511-00 Image disk is offline. Image disk unavailable. Perform the 19-300-00 to 19- 00, 20-324-00 Fax System
Job(s) may take longer Performance is 310-00 Image Disk (HDD) Fail- Memory is Low
than normal. Notify degraded. Service is ure 20-550-00 Fax line 2 is unavail- Extended Fax card fail- Cycle system power. Fax ser-
system administrator required able. Notify your sys- ure detected vice can continue from line 1.
19-512-00 Image disk offline. The image disk must be Perform the 19-300-00 to 19- tem administrator Printing and other machine
Power off then on and serviced. Power off/ 310-00 Image Disk (HDD) Fail- services are available
notify system adminis- power on will tempo- ure. 20-556-00 Fax memory error. Fax service error. Reset Cycle system power. If the
trator rarily alleviate the prob- Power off then on and Fax service error persists, perform 20-331-
lem. notify system adminis- 00 to 20-341-00 Fax Network
19-513-00 Please wait... The The image disk is full Print jobs may be delayed. No trator Line 1 Fault
image disk is full service action required. The 20-558-00 Fax memory error. Fax memory error Cycle system power. If the
system is attempting to recover. Power off then on and error persists, perform 20-322-
Printing and other machine ser- notify system adminis- 00 NV Device Not Fitted to
vices are available trator Basic Fax Card
19-514-00 All incomplete jobs Video job integrity fault If the error persists, perform the 20-559-00 Fax memory error. Fax service error Cycle system power. If the
have been deleted detected 19-409-00 Video Integrity Fault Power off then on and error persists, perform 20-320-
19-550-00 Configuration mis- The controller cannot Cycle system power. Install a notify system adminis- 00 Fax Fault Not Cleared by
match access the EPC mem- new hard disk drive, REP trator Card Reset
ory or the image disk 18.2.4. Install a new IP Board, 20-562-00 Fax line 1 is unavail- No communication on Cycle system power. If the
REP 18.2.6. able. Check line con- Fax line 1 error persists, perform 20-331-
nection or notify your 00 to 20-341-00 Fax Network
system administrator Line 1 Fault
20-563-00 Fax line 2 is unavail- No communication on Cycle system power. If the
able. Check line con- Fax line 2 error persists, perform 20-331-
nection or notify your 00 to 20-341-00 Fax Network
system administrator Line 1 Fault

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-205 OF 3
 Table 15 Chain 20 Status codes Table 16 Chain 22 Status codes
Codes UI Message Reason for Message Reference / Action Codes UI Message Reason for Message Reference / Action
20-565-00 Fax job limit has been All jobs IDs allocated Cycle system power. Fax and 22-504-04 No tray is configured No paper tray is config- Job must be deleted. Paper
reached. Power off then cannot create any more LAN Fax are disabled with the required paper ured to run the stock tray must be configured to
on and notify system size size required for this job match the job. If the problem
administrator persists, perform the 22-310-
20-570-00 Fax memory error. Fax service error Cycle system power. If the 04 to 22-318-04 Other Net-
Power off then on and error persists, perform 20-342- work Faults 25
notify system adminis- 00 Error Accessing File on a 22-504-05 Invalid original size Invalid mixed size origi- Make sure the originals are
trator NV Device detected. It will be nal pair detected not creased or folded
20-571-00 Fax memory error. Fax service error Cycle system power. If the treated as the next larg-
Power off then on and error persists, perform 20-331- est standard size
notify system adminis- 00 to 20-341-00 Fax Network 22-504-16 Machine is in a non cus- Non customer mode. Refer to the embedded pdf
trator Line 1 Fault tomer mode. Auto configuration is on this page for the recovery
20-572-00 Fax line 2 is unavail- Fax service error. Fax Cycle system power. If the disabled. Wait for procedure
able. Call for assistance line 2 is unavailable error persists, perform 20-331- machine to exit Diag-
00 to 20-341-00 Fax Network nostics mode. The
Line 1 Fault machine is unavailable
20-580-00 Fax service is unavail- NVM values supplied by Cycle system power. If the 22-505-00 Remove documents Documents sensed in To scan from the document
able. Turn machine off the Fax are invalid. Fax error persists, perform 20-302- from the document the DADH tray during glass, remove documents in
then on NVM data error 00 to 20-305-00 Fax Card HW feeder input tray or IIT standby and docu- the document feeder input
or SW Error close the document ment handler cover is tray. To use the document
feeder. open. feeder to scan your docu-
20-595-00 Fax line 1 is unavail- Fax service Error. Fax Cycle system power. If the
able. Call for assistance. line 1 is unavailable ments, lower the document
error persists, perform 20-345-
feeder.
00 FaxPort1 Modem Failure
22-505-05 Start accepted. Job will fax and network scan Scanning delayed tempo-
begin when the system rarily. Job begins when the
is ready. system is ready.
Table 16 Chain 22 Status codes 22-505-17 Machine is in a non- Machine is in a non-cus- Refer to the embedded pdf
customer mode tomer mode for the recovery procedure.
Codes UI Message Reason for Message Reference / Action
22-506-17 Auto configuration is Machine is in a non-cus- Refer to the embedded pdf
22-501-04 Please wait... The sys- System is in recovery Wait for the system to recover. disabled tomer mode for the recovery procedure.
tem is attempting to If the error persists, perform 22-508-04 Scanning will be Scan start up delayed Job will begin when system is
recover. 22-310-04 to 22-318-04 Other
delayed whilst awaiting ready. If the error persists,
Network Faults 25 resources perform the 22-330-01 to 22-
22-502-04 No message An active message has Select the Current Messages 332-00 Queue Timed Out
been produced. button in the Machine Status 22-511-04 Paper required for cur- Media required for cur- Load the correct paper to
for more information.
rent job is not available rent marking job is not complete the held job or can-
22-503-04 All incomplete jobs have System Error - Jobs Resubmit job. If the error per- loaded cel the held job. Other
been deleted. have been lost. sists, perform 22-310-04 to machine services are unaf-
22-318-04 Other Network fected.
Faults 25
22-512-04 Auto Paper Select is not All trays have been System administrator inter-
22-503-05 The number of originals Not enough originals Re-sort and reload all origi- available. specified by the SA/KO vention is required to enable
was less than the num- detected in the DADF nals. If the error persists, per- to be direct select trays. at least one tray for auto
ber originally scanned during DADF fault form 05-940-00 No Original selection.
recovery. Fail

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
OF 3 2-206 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 16 Chain 22 Status codes Table 16 Chain 22 Status codes
Codes UI Message Reason for Message Reference / Action Codes UI Message Reason for Message Reference / Action
22-513-04 One or more queued One or more queued Queued job needs resources. 22-562-00 Network Controller Network Controller Error Cycle system power. If the
jobs need resources. jobs in the system is User intervention is required error. Contact System error persists, perform 22-370-
being held. to supply resources required Administrator. 00 Unable to Communicate
for one or more queued jobs; with XSA Database
jobs will be held until 22-563-00 System Error. Power Off Incomplete System Cycle system power.
resources are available. then On and notify sys- Information. SR Dead -
22-515-04 One or more queued One or more queued Queued job needs resources. tem administrator. declared by IP reg ser-
jobs need resources. jobs in the system is User intervention is required vice.
being held. to supply resources required 22-564-00 System Error. Power Off Incomplete System Cycle system power.
for one or more queued jobs; then On and notify sys- Information. Acct Ser-
jobs will be held until tem administrator. vice Data is corrupt.
resources are available. 22-566-00 The Fax Service can- Fax service cannot reg- Cycle system power. If the
22-552-00 Option Install error. Option Install Error. Wait for the system to recover. not Register. Notify your ister error persists, perform 22-371-
Please wait...The sys- If the error persists, perform System Administrator. 00, 22-372-00 Fax Applica-
tem is attempting to 22-350-01, 22-350-02 Soft- tion Registration Error
recover. ware Detects Non-Valid Xerox
22-567-00 The Fax Service can- Fax service cannot un- Cycle system power. If the
SOK
not Un-Register. Notify register error persists, perform 22-371-
22-553-00 Please wait... One or Options are being Wait for the system to recover. your System Adminis- 00, 22-372-00 Fax Applica-
more options are being installed. If the error persists, perform trator. tion Registration Error
installed. 22-351-01 to 22-351-03 SOK
22-568-00 No message Status requiring POPO Status codes requiring a
Write Failure
detected & Auto-Reset POPO are defined in the Auto-
22-554-00 Please wait... One or Options are being Wait for the system to recover. Count less than 2 Restart column. NVM 616-216
more options are being removed. If the error persists, perform counts restart attempts the
removed. 22-351-01 to 22-351-03 SOK system will automatically try
Write Failure before engaging the user.
22-555-00 Option Install error. If Option Install Error. Cycle system power. If the
NOTE: This status should
problem persists call for error persists, perform 22-351-
never be added to the auto-
assistance. 01 to 22-351-03 SOK Write
restart list
Failure
22-556-00 Option Removal error. Option Removal Error. Cycle system power. If the 22-580-00 Register for your Sup- Service Plan registration Supplies Plan registration
plies Plan. alert. required. User intervention is
If problem persists call error persists, perform 22-351-
for assistance. 01 to 22-351-03 SOK Write required to enter Supplies
Failure Plan code.

22-557-00 Configuration parame- Serial number sync fail- Cycle system power. Use 22-581-00 The Supplies Plan is Service Plan is undeter- Supplies Plan registration
unknown. Print ser- mined. required. User intervention is
ter error. ure dC132 to check the serial
number. Use dC131 to check vices are disabled. required to enter Supplies
printer configuration. Plan code. Print and Copy ser-
vices are disabled.
If the error persists, perform
22-352-00, 22-352-01 Serial 22-582-00 The Supplies Plan Service Plan registration Supplies Plan expires soon.
Number Lost/Missing expires soon. Contact warning. Contact your System Adminis-
your System Adminis- trator to enter Activation Code.
22-558-00 Your software is not the Power On Upgrade Accept the upgrade. If the
trator. Print services are unaffected.
latest version. Do you Available error persits, use GP 9 to
want to upgrade now? force the upgrade. 22-583-00 The Supplies Plan Service Plan registration Supplies Plan registration
expires in {%d} days. expiration warning. expiration warning. Contact
22-561-00 Network Controller Raised when printer Cycle system power. If the
System Administrator to enter
error. Contact System speed, Geo Region or error persists, perform 03-399-
activation code. Print services
Administrator. CRU Ordering has 00 SIM Card Data Cannot be
are disabled.
changed via SIM card. Processed

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-207 OF 3
 Table 16 Chain 22 Status codes OF 4 Convenience Stapler Failure
Codes UI Message Reason for Message Reference / Action To identify problems with the convenience stapler.
22-584-00 The Supplies Plan has Service Plan registration Supplies Plan has expired.
expired. Print services expired. Contact your System Adminis- Initial Actions
are disabled. trator to enter Activation Code. WARNING
Print services are disabled.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Check the staples refill box to ensure it contains staples. Refer to Figure 1 for the refill box
Table 17 Chain 72 to 77 Status codes
location.
Code UI Message Reason for Message Reference / Action
72-215-00 Optional Feeder Config- Feeder Composition Cycle system power. If the
uration Failure. Failure error persists, perform 71-
215-00 Tray Feeder Composi-
tion Error
77-098-00 Optional Feeder Failure. Option Feeder Mode Cycle system power. If the
Error error persists, perform 72-
098-00 Option Feeder Mode
77-216-00 Feeder Motor Failure. Option Feeder Motor Cycle system power. If the
Failure error persists, perform 72-
216-00 Option Feeder Motor2
Error

Table 18 Chain 95 Status codes

Code UI Message Reason for Message Reference / Action
95-100-00 Software Upgrade Fail- Software Upgrade Failure An attempted upgrade
ure. did not complete suc-
cessfull. Use GP 9 to
upgrade.

Figure 1 Staples Refill Box Location

Procedure
WARNING
Perform the steps in the following procedure carefully. Failure to follow this procedure
carefully could result in electrical shock and personal injury.

NOTE: There are no serviceable components in the convenience stapler.

Refer to Figure 2 to locate and check that the power lead is correctly connected to the conve-
nience stapler.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
OF 3, OF 4 2-208 Xerox WorkCentre 6655 Color Multifunction Printer
Check the AC mains (line) voltage at the customer power outlet. The voltage measured is OF 5 Multi-feed Error
within the power requirements.
To solve several sheet multi-feeds or extra blank sheet output problems.
Y N
If the voltages are incorrect or the wiring of the main supply is defective, inform your tech-
nical manager and the customer. Do not attempt to repair or adjust the customer supply. Initial Actions
WARNING
Install a new convenience stapler, REP 18.3.9.
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
• Check media condition. Do not use incorrectly cut paper, damp paper, paper with rough
edges, badly drilled paper, paper with wrapper wax or glue contamination.
• Check media specifications, GP 26.

Procedure
When troubleshooting multi-feeds, use a new ream of paper. If a new ream can not be used,
perform the following:

1. Fan the paper.

2. Turn the paper round or turn the paper over.
3. Remove four or five sheets from the top of the stack.
Bypass Tray
Perform the following:
1. Ensure that the customer is not filling the tray above the max fill line.
2. Clean the Pick-up Assembly, PL 13.2 Item 1 with a damp cloth with water.
3. Check that the Retard Roller, PL 13.2 Item 98 is clean, has torque resistance and does
not rotate freely.
Tray 1
Check the following:
1. Check the tray side guides.
2. The bottom plate drops down when the tray is pulled out and elevates when pushed in.
a. Check the Transport Assembly components, PL 15.2.
b. Check the Feed Rolls, PL 9.1 Item 96.
c. Check that the friction clutch, PL 9.1 Item 5 in the Retard Roll Assembly has a torque
resistance and does not rotate freely.
3. Check the tray for worn, broken or missing components. Replace if necessary, PL 9.1
Figure 2 Stapler Assembly Item 1.
Optional Tray
Check the following:
1. The bottom plate drops down when the tray is pulled out and elevates when closed.
a. Check the Optional Feeder Feed Assembly, PL 10.2 Item 1.
b. Check that the friction clutch, PL 10.3 Item 5 in the Retard Roll Assembly has a
torque resistance and does not rotate freely.
2. Check tray for worn, broken or missing components.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-209 OF 4, OF 5
OF 6 Power On Self Test (POST)
POST is the Power-On Self Test that runs during the boot process and prior to loading of the
Table 1 Boot Loader Initialization
operating systems (OS). POST checks basic system functions throughout the printer before
passing control onto the operating system. Error
LED Value Boot Loader Status Component Indication Fault Code
POST Fault LED Codes 00000000 Initial status of power-on IP Board On None
Refer to Figure 1 to locate the row of eight LEDs used to display POST faults. To view the 00000001 CPU CORE initialization done IP Board On None
POST LEDs, remove the Left Side IF Cover, REP 19.2.3. The LEDs may indicate a hardware 00000010 DDR initialization done IP Board On None
problem ahead of the operating system loading and the Control Panel can be used to deter-
00000011 Access window configuration done IP Board On None
mine the problem with the printer when the Control Panel is not functioning.
00000100 DDR pre-access Wait process done IP Board On None
00000101 DDR memory check Write done IP Board On None
00000110 DDR memory check done IP Board On None
00000111 DDR memory zero clear done IP Board On None
00001000 Copy to memory of Panbug (Text) IP Board On None
00001001 Copy to memory of Panbug (Base) IP Board On None
00001010 Stack pointer configuration done IP Board Flashing None
00010000 Start hardware initialization process IP Board On None
00010001 I2C module initialization done IP Board On None
00010010 Interrupt controller initialization done IP Board On None
00010011 GIO configuration done IP Board On None
00010101 MSR register initialization done IP Board On None
00010110 HID0 register initialization done IP Board On None
00010111 Debug serial initialization done IP Board On None
00011001 PCI-Express module initialization done IP Board On None
00100000 Start software initialization processing IP Board On None
00100001 Obtain and store MacAddress done IP Board On None
00100010 Memory domain variable config done IP Board On None
00100011 Command table initialization done IP Board On None
00100100 Debug serial interruption enabling done IP Board On None
00100101 CPU GPIO interruption enabling done IP Board On None
00100110 Timer interruption enabling done IP Board On None
00100111 Other interruption enabling done IP Board On None
00101010 SD Card initialization done IP Board On None
00110001 JUMP to Panbug Main section IP Board On None
Figure 1 POST LED Location 00110010 SeepROM access failure IP Board On 016-351
11111111 Repeat alternate pattern On/Off IP Board Flashing None
POST Fault Codes 00000000 DDR initialization processing failure
The following tables list possible POST fault indications. 11110000 Repeat alternate pattern On/Off RAM Flashing None
00001111 Test error of DDR memory Read/Write
• Table 1 Boot Loader Initialization 11000000 Repeat alternate pattern On/Off IP Board Flashing None
• Table 2 Boot Loader CPU Off Recovery 00000011 Unable to recognize PCI-Express
• Table 3 SD Card Initialization
• Table 4 Switch Off Recovery

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
OF 6 2-210 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 3 SD Card Initialization
Error
Table 2 Boot Loader CPU Off Recovery LED Value Boot Loader Status Component Indication Fault Code
Error 11011011 Start read processing from SD card RAM or SD Flashing 117-319
LED Value Boot Loader Status Component Indication Fault Code
Card
00110011 DDR pre-access Wait process done IP Board On None 11011100 SD module initial check done RAM or SD Flashing 117-319
00110100 Access window configuration done IP Board On None Card
00110101 NVRAM Write Protect unlock done IP Board On None 11011110 Program memory expansion done RAM or SD Flashing None
00110110 Jump to CPU OFF recovery done IP Board On None Card
00110111 Reserved IP Board On None 11110000 Repeat alternate pattern On/Off RAM or SD Flashing 117-319
00001111 Extend processing error of Program data Card
00111000 Reserved IP Board On None
00111001 Clear processing of Data Cache done IP Board On None
00111010 ASIC Cielo initialization done IP Board On None
10000000 Repeat alternate pattern On/Off IP Board or Flashing None Table 4 Switch Off Recovery
00000001 Reserved RAM
Error
11111111 Recovery from CPUOFF Mode IP Board On None
LED Value Boot Loader Status Component Indication Fault Code
00110011 DDR pre-access Wait process done IP Board On None
00110100 Access window configuration done IP Board On None
Table 3 SD Card Initialization 00110101 NVRAM Write Protect unlock done IP Board On None

Error 00110110 Jump to CPU OFF recovery done IP Board On None

LED Value Boot Loader Status Component Indication Fault Code 00110111 Checksum calculation of data done IP Board On None

11010000 Start SD module initialization RAM or SD Flashing 117-329 00111000 Compare checksum values done IP Board On None
Card 00111001 CPU GPIO initialization done IP Board On None
11010001 SD module register initialization done RAM or SD Flashing 117-319 00111010 Debug serial initialization done IP Board On None
Card 00111011 PCI-Express module initialization done IP Board On None
11010010 SD module interrupt configuration done RAM or SD Flashing 117-319 00111100 Software initialization done IP Board On None
Card 11111111 Recovery from Switch OFF Mode IP Board On None
11010011 SD module clock initialization done RAM or SD Flashing 117-319
Card
11010100 SD card initialization command 1 done RAM or SD Flashing 117-321
Card
11010101 SD card clock enabling done RAM or SD Flashing 117-321
Card
11010110 SD card initialization done RAM or SD Flashing 117-321
Card
11010111 SD card unlock done RAM or SD Flashing 117-319
Card
11011000 SD card information obtain done RAM or SD Flashing 117-319
Card
11011001 SD card bus width configuration done RAM or SD Flashing 117-319
Card
11011010 SD module initialization done RAM or SD Flashing 117-319
Card

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-211 OF 6
OF 7 Registration Sensor OF 8 Feed Clutch
Use this procedure when referred by a Repair Analysis Procedure to troubleshoot possible Use this procedure when referred by a Repair Analysis Procedure to troubleshoot possible
problems with the Registration Sensor. problems with the Feed Clutch.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Use dC330 code 071-103 to check the Registration Sensor operation. The sensor opera- Use dC330 code 071-008 to check the Feed Clutch operation. The clutch operation fails.
tion fails. Y N
Y N Replace the MCU Board, REP 18.1.11.
Replace the MCU Board, REP 18.1.11.
Check the connection between the Feed Clutch and MCU Board (P/J392 and P/J39). The
Check the connection between the Registration Sensor and MCU Board (P/J232 and P/J23). connections are good.
The connections are good. Y N
Y N Reattach the connectors securely.
Reattach the connectors securely.
Remove the Feed Clutch, and check the wire-wound resistance between both terminals for a
Check the continuity of the wires in the harness connecting the Registration Sensor and the value of 240 ohm (at 20 degrees C). The resistance measures correctly.
MCU Board. The continuity is good. Y N
Y N Replace the Feed Clutch, REP 15.2.6.
Replace the Registration Harness Assembly.
Close the interlock switch(es), and check if the voltage between the MCU Board ground and
Check for +5 VDC from the MCU Board ground and P/J23 pin 6. The voltage is correct. P/J39 pin 3 is about +24 VDC. The voltage is correct.
Y N Y N
Refer to OF 19 +5 VDC Power. Refer to OF 18 +24 VDC Power.

Replace the Registration Chute Assembly, REP 15.2.1. Replace the Feed Clutch, REP 15.2.6.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
OF 7, OF 8 2-212 Xerox WorkCentre 6655 Color Multifunction Printer
OF 9 Registration Clutch OF 10 550 Option Main Feed Assembly Path Sensor
Use this procedure when referred by a Repair Analysis Procedure to troubleshoot possible Use this procedure when referred by a Repair Analysis Procedure to troubleshoot possible
problems with the Registration Clutch. problems with the 550 Option Main Feed Assembly’s Path Sensor.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Use dC330 code 071-010 to check the Registration Clutch operation. The clutch operation Use dC330 code 071-117 to check the Path Sensor operation. The sensor operation fails.
fails. Y N
Y N Replace the MCU Board, REP 18.1.11.
Replace the MCU Board, REP 18.1.11.
Check the connection between the Path Sensor and 550 Option Feeder Board (P/J4214 and
Check the connection between the Registration Clutch and MCU Board (P/J234 and P/J23). P/J421). The connections are good.
The connections are good. Y N
Y N Reattach the connectors securely.
Reattach the connectors securely.
Check the continuity of the cables in the harness connecting the Path Sensor and the 550
Remove the Registration Clutch, and check the wire-wound resistance between both terminals Option Feeder Board (P/J4214 and P/J421). The continuity is good.
for a value of 240 ohm (at 20 degrees C). The resistance measures correctly. Y N
Y N Replace the C2 Size Harness Assembly.
Replace the Registration Clutch, REP 15.1.8.
Check if the voltage between the 550 Option Feeder Board ground and P/J23 pin 6 is about
Close the interlock switch(es), and check if the voltage between the MCU Board ground and +3.3 VDC. The voltage is incorrect.
P/J23 pin 1 is about +24 VDC. The voltage is correct. Y N
Y N Replace the Path Sensor on the 550 Option Main Feed Assembly.
Refer to OF 18 +24 VDC Power.
Check if the voltage between the 550 Option Feeder Board ground and P/J419 pin 4 is about
Replace the Registration Clutch, REP 15.1.8. +3.3 VDC. The voltage is incorrect.
Y N
Replace the 550 Option Feeder Board, REP 10.1.10.

Check if the voltage between the MCU Board ground and P/J27 pin 7 is about +3.3 VDC. The
voltage is correct.
Y N
Refer to OF 20 +3.3 VDC Power.

Check the connections between the Feeder Board and MCU Board (P/J419, P/J27 and DP/
J271). The connections are good.
Y N
Reattach the connectors securely.

Replace the Drawer 1 Feeder Harness Assembly and the Main Harness Assembly, REP
18.4.3.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-213 OF 9, OF 10
OF 11 550 Option Registration Clutch Assembly Y N
Reattach the connections securely.
Use this procedure when referred by a Repair Analysis Procedure to troubleshoot possible
problems with the 550 Option Registration Clutch Assembly. Replace the Drawer 1 Feeder Harness Assembly and the Main Harness Assembly, REP
18.4.3.
Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Use dC330 code 071-020 to check the 550 Option Registration Clutch operation. The clutch
operation fails.
Y N
Replace the MCU Board, REP 18.1.11.

Check the connection between the 550 Option Registration Clutch and 550 Option Feeder
Board (P/J4213 and P/J421). The connections are good.
Y N
Reattach the connectors securely.

Check the continuity of the cables in the harness connecting the 550 Option Registration
Clutch and the 550 Option Feeder Board (P/J4213 and P/J421). The continuity is good.
Y N
Replace the C2 Size Harness Assembly.

Remove the 550 Option Registration Clutch, and check the wire-wound resistance between
both terminals for a value of 240 ohm (at 20 degrees C). The resistance measures cor-
rectly.
Y N
Replace the 550 Option Registration Clutch Assembly, REP 10.1.1.

Close the interlock switch(es), and check if the voltage between the Feeder Board ground and
P/J421 pin 1 is about +24 VDC. The voltage is incorrect.
Y N
Replace the 550 Option Registration Clutch Assembly, REP 10.2.2.

Close the interlock switch(es), and check if the voltage between the 550 Option Feeder Board
ground and P/J419 pin 6, and the voltage between the 550 Option Feeder Board ground and
P/J419 pin 7 is about +24 VDC. The voltage is incorrect.
Y N
Replace the 550 Option Feeder Board, REP 10.1.10.

Close the interlock switch(es), and check if the voltage between the MCU Board ground and P/
J271 pin 4, and the voltage between the MCU Board ground and P/J27 pin 5 is about +24
VDC. The voltages are correct.
Y N
Refer to OF 18 +24 VDC Power.

Check the connection between the Feeder Board Assembly and the MCU Board (P/J419, DP/
J271, and P/J27). The connections are secure.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
OF 11 2-214 Xerox WorkCentre 6655 Color Multifunction Printer
OF 12 550 Option Feed Clutch Assembly Y N
Reattach the connections securely.
Use this procedure when referred by a Repair Analysis Procedure to troubleshoot possible
problems with the 550 Option Feed Clutch Assembly. Replace the Drawer 1 Feeder Harness Assembly and the Main Harness Assembly, REP
18.4.3.
Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Use dC330 code 071-020 to check the 550 Option Feed Clutch Assembly operation. The
clutch operation fails.
Y N
Replace the MCU Board, REP 18.1.11.

Check the connection between the 550 Option Feed Clutch Assembly and 550 Option Feeder
Board (P/J4201 and P/J420). The connections are good.
Y N
Reattach the connectors securely.

Check the continuity of the cables in the harness connecting the 550 Option Feed Clutch
Assembly and the 550 Option Feeder Board (P/J4201 and P/J420). The continuity is good.
Y N
Replace the C2 Turn Harness Assembly.

Remove the 550 Option Feed Clutch Assembly, and check the wire-wound resistance
between both terminals for a value of 240 ohm (at 20 degrees C). The resistance measures
correctly.
Y N
Replace the 550 Option Feed Clutch Assembly, REP 10.1.8.

Close the interlock switch(es), and check if the voltage between the Feeder Board ground and
P/J421 pin 1 is about +24 VDC. The voltage is incorrect.
Y N
Replace the 550 Option Feed Clutch Assembly, REP 10.1.8.

Close the interlock switch(es), and check if the voltage between the 550 Option Feeder Board
ground and P/J419 pin 6, and the voltage between the 550 Option Feeder Board ground and
P/J419 pin 7 is about +24 VDC. The voltage is incorrect.
Y N
Replace the 550 Option Feeder Board, REP 10.1.10.

Close the interlock switch(es), and check if the voltage between the MCU Board ground and P/
J271 pin 4, and the voltage between the MCU Board ground and P/J27 pin 5 is about +24
VDC. The voltages are correct.
Y N
Refer to OF 18 +24 VDC Power.

Check the connection between the Feeder Board Assembly and the MCU Board (P/J419, DP/
J217, and P/J27). The connections are secure.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-215 OF 12
 A
OF 13 550 Option Drive Assembly Replace the Drawer 1 Feeder Harness Assembly and the Main Harness Assembly, REP
18.4.3.
Use this procedure when referred by a Repair Analysis Procedure to troubleshoot possible
problems with the 550 Option Drive Assembly.

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Use dC330 code 071-014 to check the 550 Option Drive Assembly operation. The drive
assembly operation fails.
Y N
Replace the MCU Board, REP 18.1.11.

Rotate the 550 Option Drive Assembly manually. The drive assembly rotates easily without
an overload.
Y N
Reinstall the 550 Option Drive Assembly correctly, REP 10.1.9.

Check the connection between the 550 Option Drive Assembly and 550 Option Feeder Board
(P/J4221 and P/J422). The connections are good.
Y N
Reattach the connectors securely.

Check the continuity of the cables in the harness connecting the 550 Option Drive Assembly
and the 550 Option Feeder Board (P/J4221 and P/J422). The continuity is good.
Y N
Replace the Feeder Motor Harness Assembly.

Close the interlock switch(es), and check if the voltage between the 550 Option Feeder Board
ground and P/J422 pin 6 is about +24 VDC. The voltage is incorrect.
Y N
Replace the 550 Option Drive Assembly, REP 10.1.9.

Close the interlock switch(es), and check if the voltage between the 550 Option Feeder Board
ground and P/J419 pin 6, and the voltage between the 550 Option Feeder Board ground and
P/J419 pin 7 is about +24 VDC. The voltage is incorrect.
Y N
Replace the 550 Option Feeder Board, REP 10.1.10.

Close the interlock switch(es), and check if the voltage between the MCU Board ground and P/
J271 pin 4, and the voltage between the MCU Board ground and P/J27 pin 5 is about +24
VDC. The voltages are correct.
Y N
Refer to OF 18 +24 VDC Power.

Check the connection between the Feeder Board Assembly and the MCU Board (P/J419, DP/
J271, and P/J27). The connections are secure.
Y N
Reattach the connections securely.
A
Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
OF 13 2-216 Xerox WorkCentre 6655 Color Multifunction Printer
OF 14 Bypass Tray Feed Solenoid OF 15 Exit Sensor
Use this procedure when referred by a Repair Analysis Procedure to troubleshoot possible Use this procedure when referred by a Repair Analysis Procedure to troubleshoot possible
problems with the Bypass Tray Feed Solenoid. problems with the Exit Sensor.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Use dC330 code 071-007 to check the Bypass Tray Feed Solenoid operation. The solenoid Use dC330 code 071-104 to check the Exit Sensor operation. The sensor operation fails.
operation fails. Y N
Y N Replace the MCU Board, REP 18.1.11.
Replace the MCU Board, REP 18.1.11.
Check the connection between the Exit Sensor and MCU Board (P/J155, P/J151, and P/J15).
Check the connection between the Bypass Tray Feed Solenoid and MCU Board (P/J214 and The connections are good.
P/J21). The connections are good. Y N
Y N Reattach the connectors securely.
Reattach the connectors securely.
Check the continuity of the wires in the harness connecting the Exit Sensor and the relay con-
Check the continuity of the wires in the harness connecting the Bypass Tray Feed Solenoid nector (P/J155 and P/J151). The continuity is good.
and the MCU Board (P/J214 and P/J21). The continuity is good. Y N
Y N Replace the Exit Sensor Harness Assembly.
Replace the Bypass Tray Harness Assembly.
Check the continuity of the wires in the harness connecting the relay connector and the MCU
Close the interlock switch(es), and check if the voltage between the MCU Board ground and Board (P/J151 and P/J15). The continuity is good.
P/J21 pin 9 is about +24 VDC. The voltage is correct. Y N
Y N Replace the Sensor Harness Assembly.
Refer to OF 18 +24 VDC Power.
Check if the voltage between the MCU Board ground and P/J15 pin 1 is about +5 VDC. The
Replace the Bypass Tray Feed Solenoid, REP 13.2.99. voltage is correct.
Y N
Refer to OF 19 +5 VDC Power.

Replace the Exit Sensor, REP 17.1.1.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-217 OF 14, OF 15
OF 16 Exit Drive Assembly Clutch 1 OF 17 Exit Drive Assembly Clutch 2
Use this procedure when referred by a Repair Analysis Procedure to troubleshoot possible Use this procedure when referred by a Repair Analysis Procedure to troubleshoot possible
problems with the Exit Drive Assembly Clutch 1. problems with the Exit Drive Assembly Clutch 2.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Use dC330 code 071-011 to check the Exit Clutch 1 operation. The clutch operation fails. Use dC330 code 071-012 to check the Exit Clutch 2 operation. The clutch operation fails.
Y N Y N
Replace the MCU Board, REP 18.1.11. Replace the MCU Board, REP 18.1.11.

Check the connection between the Exit Clutch 1 and MCU Board (P/J40). The connection is Check the connection between the Exit Clutch 2 and MCU Board (P/J38). The connection is
good. good.
Y N Y N
Reattach the connector securely. Reattach the connector securely.

Close the interlock switch(es), and check if the voltage between the MCU Board ground and Close the interlock switch(es), and check if the voltage between the MCU Board ground and
P/J40 pin 1 is about +24 VDC. The voltage is correct. P/J38 pin 1 is about +24 VDC. The voltage is correct.
Y N Y N
Refer to OF 18 +24 VDC Power. Refer to OF 18 +24 VDC Power.

Replace the Exit Clutch 1, REP 17.1.21. Replace the Exit Clutch 2, REP 17.1.21.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
OF 16, OF 17 2-218 Xerox WorkCentre 6655 Color Multifunction Printer
OF 18 +24 VDC Power OF 19 +5 VDC Power
Use this procedure when referred by a Repair Analysis Procedure to troubleshoot possible Use this procedure when referred by a Repair Analysis Procedure to troubleshoot possible
problems with the +24 VDC Power Supply. problems with the +5 VDC Power Supply.

Procedure Procedure
WARNING WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury. not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury. Moving parts can cause injury.
Check the connection between the LVPS and the MCU Board (P/J501 and P/J29). The con- Check the connection between the LVPS and the MCU Board (P/J501 and P/J29). The con-
nections are good. nections are good.
Y N Y N
Reattach the connectors securely. Reattach the connectors securely.

Check the continuity of the wires in the harness connecting the LVPS and the MCU Board (P/ Check the continuity of the wires in the harness connecting the LVPS and the MCU Board (P/
J501 and P/J29). The continuity is good. J501 and P/J29). The continuity is good.
Y N Y N
Replace the Top Harness Assembly, REP 18.4.5. Replace the Top Harness Assembly, REP 18.4.5.

Close the interlock switch(es), and check if the voltage between the LVPS ground and P/J501 Check if the voltage between the LVPS ground and P/J501 pin 3 is about +5 VDC. The volt-
pin 2, and the voltage between the LVPS ground and P/J501 pin 1 is about +24 VDC. The age is incorrect.
voltage is incorrect. Y N
Y N Replace the MCU Board, REP 18.1.11.
Replace the MCU Board, REP 18.1.11.
Turn the power off, wait a while, then turn the power on again. The error persists.
Turn the power off, wait a while, then turn the power on again. The error persists. Y N
Y N Perform SCP 6 Final Actions.
Perform SCP 6 Final Actions.
Check if the voltage between the LVPS connectors P/J48 pin 1 and P/J48 pin 3 is 100 VAC.
Check if the voltage between the LVPS connectors P/J48 pin 1 and P/J48 pin 3 is 100 VAC. The voltage is correct.
The voltage is correct. Y N
Y N Replace the AC Inlet, REP 18.3.99.
Replace the AC Inlet, REP 18.3.99.
Replace the LVPS, REP 18.3.2.
Replace the LVPS, REP 18.3.2.

Initial Issue - Xerox Internal Use Only 9/2014 Status Indicator RAPs
Xerox WorkCentre 6655 Color Multifunction Printer 2-219 OF 18, OF 19
OF 20 +3.3 VDC Power
Use this procedure when referred by a Repair Analysis Procedure to troubleshoot possible
problems with the +3.3 VDC Power Supply.

Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Check the connection between the LVPS and the MCU Board (P/J501 and P/J29). The con-
nections are good.
Y N
Reattach the connectors securely.

Check the continuity of the wires in the harness connecting the LVPS and the MCU Board (P/
J501 and P/J29). The continuity is good.
Y N
Replace the Top Harness Assembly, REP 18.4.5.

Check if the voltage between the LVPS ground and P/J501 pin 5 is about +3.3 VDC. The volt-
age is incorrect.
Y N
Replace the MCU Board, REP 18.1.11.

Turn the power off, wait a while, then turn the power on again. The error persists.
Y N
Perform SCP 6 Final Actions.

Check if the voltage between the LVPS connectors P/J48 pin 1 and P/J48 pin 3 is 100 VAC.
The voltage is correct.
Y N
Replace the AC Inlet, REP 18.3.99.

Replace the LVPS, REP 18.3.2.

Status Indicator RAPs 9/2014 Initial Issue - Xerox Internal Use Only
OF 20 2-220 Xerox WorkCentre 6655 Color Multifunction Printer
 3 Image Quality
IQ1 Image Quality Entry .................................................................................................. 3-3
IQ2 Light or Undertoned Print ......................................................................................... 3-4
IQ3 One Color is Light or Undertoned on the Print ......................................................... 3-5
IQ4 Unfused Image ......................................................................................................... 3-6
IQ5 Random Spots.......................................................................................................... 3-7
IQ6 Blank Print or Missing One Color ............................................................................. 3-8
IQ7 Vertical Process Streaks .......................................................................................... 3-9
IQ8 Pitched Color Dots ................................................................................................... 3-10
IQ9 Vertical Blanks (line, band, spots) ............................................................................ 3-11
IQ10 Ghosting ................................................................................................................. 3-12
IQ11 Light-Induced Fatigue............................................................................................. 3-13
IQ12 Fog, Background Contamination............................................................................ 3-14
IQ13 Bead-Carry-Out (BCO) ........................................................................................... 3-15
IQ14 Jagged Characters ................................................................................................. 3-15
IQ15 Horizontal Bands (voids, streaks)........................................................................... 3-16
IQ16 Auger Mark............................................................................................................. 3-17
IQ17 Wrinkled/Stained Paper.......................................................................................... 3-17
IQ18 Leading Edge Paper Damage ................................................................................ 3-18
IQ19 Incorrect Top and Side Margins ............................................................................. 3-19
IQ20 Color Registration is Out of Alignment ................................................................... 3-20
IQ21 Images are Skewed................................................................................................ 3-21

Initial Issue - Xerox Internal Use Only 9/2014 Image Quality

Xerox WorkCentre 6655 Color Multifunction Printer 3-1
Image Quality 9/2014 Initial Issue - Xerox Internal Use Only
3-2 Xerox WorkCentre 6655 Color Multifunction Printer
IQ1 Image Quality Entry • Vertical white lines
• Vertical black line or band
The purpose of this procedure is to establish the source and type of imaging defect. Print-qual-
ity defects can be attributed to printer components, consumables, media, internal software, • Stains on the page back
external software applications, and environmental conditions. To successfully troubleshoot Fuser image defects:
print-quality problems, eliminate as many variables as possible. First, recreate the perceived • Ghosting
defect using the customer’s job or test print. The test print procedure is located at the end of • Stains on the page back or front
this section. Use approved laser paper from a fresh ream acclimated to room temperature and
• Poor image adhesion
humidity.
Image Unit image defects:
If the print-quality defect is still present after printing on approved media from an unopened • Uneven density
ream of paper, investigate software applications being used and environmental conditions. • Background contamination
Check the temperature and humidity under which the printer is operating. Compare this to the
• Spots, smudges, or smears
“Environmental Specifications”. Extreme temperature and humidity can adversely affect the
• Ghosting
printer’s xerographic and fusing characteristics.
• Vertical white lines
When analyzing a imaging defect, determine if the defect is repeating or random. Continuous • Vertical black line or band
defects in the process direction, such as voids and lines, are the most difficult to diagnose. • Stains on the page front
Check the CRU life counters for end of life conditions. Inspect the visible surfaces of all rollers
• Blank prints or prints missing one color
for obvious defects. If a cursory inspection does not reveal any obvious defects, continue trou-
• Horizontal Black lines or bands
bleshooting the defect, starting with the list of initial actions.
After determining the defect type and possible source, match the defect with those listed in
Initial Actions Table 1. Go to the RAP listed to correct the defect.

Use the following steps to determine which part of the system is at fault.
Image Defect Definitions
1. If possible, discuss the defect with the customer to determine if the perceived defect is
Table 1 lists image defect definitions and the RAP(s) used to correct the problem.
outside the printer’s image specifications.
2. Ensure all connections to the printer are secure.
Table 1 Image Defect Definitions
3. Check the CRU life counts. Replace components at end of life.
Defect Definition Go To
4. Cycle system power.
5. Make sure the printer is positioned to allow adequate airflow at all vents. Refer to GP 22, Light Prints The overall image density is too light. IQ2
Installation Space Requirements. One Color Light The image density for a single color is too light. IQ3
on Print
6. Make sure the printer’s interior is clean.
Unfused Image Part or all of the image is infused. Refer to the specification. IQ4
7. Check the tray guides.
Spots There are random spots of toner on the page. IQ5
8. Use the customer’s print job to check defect reoccurrence. If the defect persists, begin to
isolate the defect by attempting to identify the component responsible. Blank Prints Prints with no visible image, or missing one color entirely. IQ6
9. Check stored tray settings for media size and type. Vertical Process Extraneous dark lines/bands in the process direction. IQ7
Streaks
10. Check image adjustment and print mode settings being used.
Pitched Color Recurring color dots or spots. IQ8
Dots
Defects Associated with Specific Components
Vertical Blanks Areas of image appear as blanks or deletions. IQ9
To aid with defect diagnosis, listed below are defects associated with specific components.
Ghosting The image from a previous print appears on the current print. IQ10
Laser Unit image defects: Light-Induced Light fatigue pattern appearing across image IQ11
Fatigue
• Vertical white lines
Fog Toner contamination on all or part of the page appears as a IQ12
• Curved lines
very light gray dusting or fog.
Transfer Roller image defects:
Bead-Carry-Out Multiple dots appearing across image. IQ13
• Uneven Density
Jagged Charac- Text in image is fuzzy or blurry IQ14
• Background contamination ters
• Ghosting

Initial Issue - Xerox Internal Use Only 9/2014 Image Quality

Xerox WorkCentre 6655 Color Multifunction Printer 3-3 IQ1
 Table 1 Image Defect Definitions IQ2 Light or Undertoned Print
Defect Definition Go To The overall image density is too light (Figure 1).
Horizontal Band- Voids and streaks that appear as areas of horizontal bands. IQ15
ing WARNING
Auger Mark Auger marks appear across output IQ16 Switch off the electricity to the machine. Disconnect the power cord from the customer
Wrinkled Paper The paper comes out either wrinkled, creased, stained, or IQ17 supply while performing tasks that do not need electricity. Electricity can cause death or
torn injury. Moving parts can cause injury.
Leading Edge The page comes out with the leading edge damaged. IQ18 WARNING
Paper Damage Do not touch the Fuser while it is hot.
Incorrect Margins Image prints outside of the page margins. IQ19
Initial Actions
Color Registra- Image colors are not aligned with each other IQ20
• Inspect the paper path for items, such as staples, paper clips, and paper scraps.
tion is out of
Alignment • Check the Imaging Units’ life counters. Replace the Imaging Units that are at end of life.
Skewed Images Images in the output are not parallel to the edge of the IQ21 • Check that the Imaging Units’ electrical contact points are clean.
printed sheet. • Ensure that there are no obstructions in the laser light path.
• Ensure that draft mode is turned Off.
You can print the test print from the Control Panel or by using test pins on the MCU Board.
• To print the test print from the Control Panel:
1. From the Main menu, scroll to Troubleshooting, then press the OK button.
2. Scroll to Test Prints, then press the OK button.
3. Select test print 1. Press OK to print.
• To print the test print by using test pins on the MCU Board:
1. Remove the Left Cover Assembly, REP 19.2.99.
2. Refer to Figure 1 to locate and short the Test Print test pins on the MCU Board.
3. Short the test pins together for a brief period to initiate the test print.

Figure 1 Light or undertone print example

Procedure
Check media condition. Load new, dry recommended paper, and print a test print. The image
is too light.
Y N
Perform SCP 6 Final Actions.
Figure 1 Test Print test pins on the MCU Board
Remove and examine the Transfer Belt Assembly for surface contamination or excessive
wear. The Transfer Belt Assembly is good.
Y N
Replace the Transfer Belt Assembly, REP 6.1.97.

A
Image Quality 9/2014 Initial Issue - Xerox Internal Use Only
IQ1, IQ2 3-4 Xerox WorkCentre 6655 Color Multifunction Printer
A
Print a test print. While the print is printing, turn off system power. Open the Rear Door and IQ3 One Color is Light or Undertoned on the Print
check the image formed on the Transfer Belt. The image is poorly formed, faint and diffi-
The overall image density for one color is too light (Figure 1).
cult to read.
Y N
Replace the Transfer Belt Assembly, REP 6.1.97. WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
Replace the Transfer HVPS, REP 18.1.16, and print a test print. The image is too light. supply while performing tasks that do not need electricity. Electricity can cause death or
Y N injury. Moving parts can cause injury.
Perform SCP 6 Final Actions. WARNING
Replace the MCU Board, REP 18.1.11. The image is too light. Do not touch the Fuser while it is hot.
Y N Initial Actions
Perform SCP 6 Final Actions.
• Inspect the paper path for items, such as staples, paper clips, and paper scraps.
• Check the Imaging Unit life counter of the affected color. If at end of life, replace the Imag-
Replace the IP Board, REP 18.2.6.
ing Unit.
• Check that the Imaging Unit’s electrical contact points are clean.
• Ensure that there are no obstructions in the laser light path.
• Ensure that draft mode is turned Off.

Figure 1 Light or undertone in one color print example

Procedure
Check media condition. Load new, dry recommended paper, and print a test print. The image
is too light.
Y N
Perform SCP 6 Final Actions.

Replace the Imaging Unit of the affected color (REP 8.1.95), and print a test print. The image
is too light.
Y N
Perform SCP 6 Final Actions.

A
Initial Issue - Xerox Internal Use Only 9/2014 Image Quality
Xerox WorkCentre 6655 Color Multifunction Printer 3-5 IQ2, IQ3
A
Remove the Imaging Unit of the affected color, clean the electrical contacts, then print a test IQ4 Unfused Image
print. The image is too light.
The printed image is not fully fused to the paper (Figure 1). The image rubs off easily. A cold
Y N
Perform SCP 6 Final Actions. environment affects the warm-up time, while high humidity has an adverse effect on fusing.
Also, media weight and composition affect fusing performance.
Print a test print. While the print is printing, turn off system power. Remove the Transfer Belt,
and check the image formed on the belt right before the transfer. The image of the affected Initial Actions
color is well formed, clear, and easy to read. • Check the environment. A location that’s too cold or humid reduces fusing performance.
Y N • Inspect the media path for debris, such as staples, paper clips, and paper scraps.
Replace the Transfer Belt Assembly, REP 6.1.97. The problem persists.
• Verify that the media type is set correctly.
Y N
• Set media type setting to the next heavier type.
Perform SCP 6 Final Actions.
• Verify that the toner cartridge(s) of the affected color(s) is genuine Xerox Toner.
Continue with the procedure.

Replace the Transfer HVPS, REP 18.1.16, and print a test print. The image is too light.
Y N
Perform SCP 6 Final Actions.

Replace the MCU Board, REP 18.1.11. The image is too light.
Y N
Perform SCP 6 Final Actions.

Replace the IP Board, REP 18.2.6.

Figure 1 Unfused image

Procedure
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
Do not touch the Fuser while it is hot.
Rub the image with a soft cloth or tissue. The image smears.
Y N
Perform SCP 6 Final Actions.

Replace the media with new, dry media from an unopened ream. The image smears.
Y N
Perform SCP 6 Final Actions.

Check the emerald green Fuser jam release levers. The levers are in the lowered (locked)
position.

Image Quality 9/2014 Initial Issue - Xerox Internal Use Only

IQ3, IQ4 3-6 Xerox WorkCentre 6655 Color Multifunction Printer
Y N IQ5 Random Spots
Push the levers down, cycle system power, and test. The problem persists.
There are spots of toner randomly scattered on the page (Figure 1).
Y N
Perform SCP 6 Final Actions.
WARNING
Continue with the procedure. Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
Remove and inspect the Fuser, REP 7.1.1. The Fuser rollers are good. injury. Moving parts can cause injury.
Y N WARNING
Replace the Fuser, REP 7.1.1.
Do not touch the Fuser while it is hot.
Check the Fuser electrical connection. The connector is good. Initial Actions
Y N
• Check that the paper is clean, dry, and meets specifications.
Repair or replace the harness.
• If using recycled paper, it may have spots.
Replace the Fuser. • Inspect the paper path for items, such as staples, paper clips, and paper scraps.
• Check if the defects repeat at regular intervals. If so, see IQ18.
• Check Drum surface for spots or contamination.
• Check the Fuser for wear or contamination.
• Check that the Drum Cartridge contacts are clean.

Figure 1 Spots example

Procedure
Check the media. The media is clean, of the approved type, and free of defects.
Y N
Replace the media with approved media from a freshly opened package.

Check the media path for dirt, debris, or toner residue. The media path is clean.
Y N
Clean the media path.

Print the 50% YMCKRGB test prints. The image contains spots in all colors.

Initial Issue - Xerox Internal Use Only 9/2014 Image Quality

Xerox WorkCentre 6655 Color Multifunction Printer 3-7 IQ4, IQ5
Y N IQ6 Blank Print or Missing One Color
Replace the Imaging Unit of the affected color (REP 8.1.95), and rerun the test print. The
No visible image anywhere on the output (Figure 1).
problem persists with the affected color.
Y N
Perform SCP 6 Final Actions. Initial Actions
• Inspect the paper path for items, such as staples, paper clips, and paper scraps.
Continue with the procedure. • Check CRU life counters. Replace components at end of life.
• Clear any obstructions in the laser light path.
Remove the Transfer Belt Assembly and check for surface contamination or excessive wear.
• Check for multi-sheet feeds.
The Transfer Belt Assembly is good.
Y N
Replace the Transfer Belt Assembly, REP 6.1.97.

Check if the spots are only on the back of a single-sided print. The back side is clear of
spots.
Y N
Remove the Transfer Roller (REP 14.1.99) and check for surface contamination or exces-
sive wear. The Transfer Roller is good.
Y N
Replace the Transfer Roller, REP 14.1.99.

Continue the procedure.

Remove the Fuser. Check for damage or debris on the rollers. The Fuser rollers are good.
Y N
Replace the Fuser, REP 7.1.1.

Check connections between the IP Board and Laser Unit. The connections are secure. Figure 1 Blank print example
Y N
Secure the connections.
Procedure
Replace the IP Board, REP 18.2.6. WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
Do not touch the Fuser while it is hot.
Print a test print. The test print is blank.
Y N
Check the customer’s print job settings and the printer’s Ethernet or USB connections.
Print job settings and network connections are good.
Y N
Correct the settings or connections.

Replace the IP Board, REP 18.2.6.

Check the test print is missing one or more colors. The print is totally blank (missing all col-
ors).

Image Quality 9/2014 Initial Issue - Xerox Internal Use Only

IQ5, IQ6 3-8 Xerox WorkCentre 6655 Color Multifunction Printer
Y N IQ7 Vertical Process Streaks
Remove the Imaging Unit of the affected color and clean the electrical contacts; then,
Extraneous vertical dark lines or bands (Figure 1).
reinstall the Imaging Unit and rerun the test print. The print is still missing the color.
Y N
Perform SCP 6 Final Actions. WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
Replace the Imaging Unit for the affected color, REP 8.1.95, and rerun the test print. supply while performing tasks that do not need electricity. Electricity can cause death or
The print is still missing the color. injury. Moving parts can cause injury.
Y N WARNING
Perform SCP 6 Final Actions.
Do not touch the Fuser while it is hot.
Continue with the procedure. Initial Actions
• Check that the paper supply is dry and meets specifications.
Remove examine the Transfer Roller for surface contamination or excessive wear. The
• Inspect the paper path for items, such as staples, paper clips, and paper scraps.
Transfer Roller is good.
Y N • Check that the Drum Cartridge contacts are clean.
Replace the Transfer Roller, REP 14.1.99. • Inspect the media path for contamination or obstruction.

Check for obstructions between the Laser Unit and Drum Cartridge. The laser light path is
clear.
Y N
Clear the laser light path of obstructions.

Check connections to the Laser Unit from the IP Board. The connections are secure.
Y N
Secure the connections.

Check Transfer HVPS connections to the bias contacts. The connections are secure.
Y N
Secure the connections.

Replace the HVPS, REP 18.1.16, and print a test print. The image is blank.
Y N
Perform SCP 6 Final Actions.

Replace the Laser Unit and reprint the test print. The image is blank. Figure 1 Vertical process streak example
Y N
Perform SCP 6 Final Actions. Procedure
Check the error mode. The error occurs only when printing, and not when copying or
Replace the MCU Board, REP 18.1.11. The image is blank. scanning.
Y N Y N
Perform SCP 6 Final Actions. Check the original. The original color is clean.
Y N
Replace the IP Board, REP 18.2.6. Change the original.

Clean the DADF glass and the Scanner’s white strip with a clean dry cotton swab. The
error persists when copying or scanning.
Y N
Perform SCP 6 Final Actions.

Continue with the procedure.

A
Initial Issue - Xerox Internal Use Only 9/2014 Image Quality
Xerox WorkCentre 6655 Color Multifunction Printer 3-9 IQ6, IQ7
A
Check the amount of toner remaining in each cartridge; replace Toner Cartridges as needed, IQ8 Pitched Color Dots
REP 5.1.8. The error persists.
Recurring color dots or spots (Figure 1).
Y N
Perform SCP 6 Final Actions.
WARNING
Replace the Imaging Units, REP 8.1.95. The error persists. Switch off the electricity to the machine. Disconnect the power cord from the customer
Y N supply while performing tasks that do not need electricity. Electricity can cause death or
Perform SCP 6 Final Actions. injury. Moving parts can cause injury.
WARNING
Check the Intermediate Transfer Belt for cleanliness, wear, and installation. The Transfer
Belt is clean, not worn, and works correctly. Do not touch the Fuser while it is hot.
Y N Initial Actions
Replace the Transfer Belt, REP 6.1.97.
• Check that the paper is clean, dry, and meets specifications.
• Inspect the paper path for items, such as staples, paper clips, and paper scraps.
Contact Xerox Technical Support.
• Check CRU life counts. Replace components at end of life.

Figure 1 Pitched color dots example

Procedure
Determine the cause of the problem using test prints. Cannot determine defective part.
Y N
Proceed to the action below corresponding to the problem part.

Replace the Imaging Units, REP 8.1.95. The problem persists.

Y N
Task complete. Final actions.

Replace the Fuser Assembly, REP 7.1.1. The problem persists.

Y N
Task complete. Final actions.

Replace the Transfer Belt Assembly, REP 6.1.97; the Transfer Roller, REP 14.1.99; and the
Retard Roller, REP 13.3.98. The problem persists.

Image Quality 9/2014 Initial Issue - Xerox Internal Use Only

IQ7, IQ8 3-10 Xerox WorkCentre 6655 Color Multifunction Printer
Y N IQ9 Vertical Blanks (line, band, spots)
Task is complete. Final actions.
Use this procedure to correct defects that appear as areas of image blanks or deletions (Figure
Check the Development HVPS Board connector connection. The Development HVPS Board 1).
connector is connected correctly.
Y N Initial Actions
Connect the connector. Task complete. Final actions. • Check that the paper supply is dry and meets specifications.
• Inspect the paper path for items, such as staples, paper clips, and paper scraps.
Check the installation of the Transfer Belt Assembly. The Transfer Belt Assembly HV termi-
• Check Drum Cartridge installation.
nal is clean, and it contacts the spring correctly.
• Clean Drum Cartridge contacts.
Y N
Clean the HV terminal. Reinstall the Transfer Belt Assembly. • Check the Transfer Roller for contamination or wear.
• Check that rollers and other media path components are clean and unobstructed.
Check the Transfer Belt Assembly. The Transfer Belt Assembly is clean, undamaged, and • If vertical lines of deletion appear, clean the Laser Unit window.
works correctly.
Y N
Replace the Transfer Belt Assembly, REP 6.1.97.

Check the Transfer HVPS Board connector connection. The Transfer HVPS Board connec-
tor is connected correctly.
Y N
Contact Xerox Technical Support.

Connect the connector.

Perform SCP 6 Final Actions.

Figure 1 Vertical blank, line, or spot deletions example

Procedure
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
Do not touch the Fuser while it is hot.
Print and inspect the 50% YMCKRGB test prints for deletions (missing image). There should
be no deletions with a diameter larger than 0.5 mm visible on the test prints. No deletions
are visible.
Y N
Perform SCP 6 Final Actions.

Check the media. The media is clean, of the approved type, and free of defects.
Y N
Replace the media with approved media from a freshly opened package.
A
Initial Issue - Xerox Internal Use Only 9/2014 Image Quality
Xerox WorkCentre 6655 Color Multifunction Printer 3-11 IQ8, IQ9
A
Check the media path for dirt, debris, or toner residue. The media path is clean. IQ10 Ghosting
Y N
The image from a previous print appears on the current print (Figure 1).
Clean the media path.

If the blank is in only one color, replace the Imaging Unit (REP 8.1.95) and reprint the test WARNING
print. The image contains spots. Switch off the electricity to the machine. Disconnect the power cord from the customer
Y N supply while performing tasks that do not need electricity. Electricity can cause death or
Perform SCP 6 Final Actions. injury. Moving parts can cause injury.
WARNING
Remove and examine the Transfer Belt Assembly for surface contamination or excessive
wear. The Transfer Belt Assembly is good. Do not touch the Fuser while it is hot.
Y N Initial Actions
Replace the Transfer Belt Assembly, REP 6.1.97.
• Check media type settings are correct.
• Inspect the paper path for items, such as staples, paper clips, and paper scraps.
Check for debris on the Laser Unit window or obstructions between the Laser Unit and Imaging
Unit. The laser light path is clear. • Check that the Fuser green nip release levers are released (down).
Y N • Verify the paper is within specifications.
Clear the laser light path of obstructions.

Remove and examine the Fuser for damage or debris on the rollers. The Fuser rollers are
good.
Y N
Replace the Fuser, REP 7.1.1

Check connections between the IP Board and Laser Unit. The connections are secure.
Y N
Secure the connections.

Replace the IP Board, REP 18.2.6.

Figure 1 Residual image (ghosting) example

Procedure
Print 10 test prints. A residual image appears on all copies.
Y N
Set the paper type to one type higher, and print an additional 10 prints to clean residual
toner from the rollers.

Measure the defect frequency on the prints. No defect pattern is visible.

Y N
Refer to IQ13 Repeating Defects to determine the defective component.

Remove the Transfer Belt Assembly and check for surface contamination or excessive wear.
The Transfer Belt Assembly is good.
Y N
Replace the Transfer Belt Assembly, REP 6.1.97.

A
Image Quality 9/2014 Initial Issue - Xerox Internal Use Only
IQ9, IQ10 3-12 Xerox WorkCentre 6655 Color Multifunction Printer
A
Remove and examine the Fuser for damage or debris on the rollers. The Fuser rollers are IQ11 Light-Induced Fatigue
good.
Light fatigue pattern appearing across image (Figure 1).
Y N
Replace the Fuser, REP 7.1.1.
WARNING
Replace the following, in order, until the defective component is found. Switch off the electricity to the machine. Disconnect the power cord from the customer
• Fuser, REP 7.1.1. supply while performing tasks that do not need electricity. Electricity can cause death or
• Transfer Belt Assembly, REP 6.1.97. injury. Moving parts can cause injury.
• Transfer HVPS, REP 18.1.16. WARNING
Do not touch the Fuser while it is hot.
Initial Actions
• Check that the paper is clean, dry, and meets specifications.
• Inspect the paper path for items, such as staples, paper clips, and paper scraps.
• Check CRU life counts. Replace components at end of life.

Figure 1 Light-induced fatigue example

Procedure
Determine the cause of the problem using test prints. Pattern on the output matches that on
the scale.
Y N
Contact Xerox Technical Support.

Replace the Imaging Units, REP 8.1.95. The problem is fixed.

Y N
Contact Xerox Technical Support.

Task complete.
Perform SCP 6 Final Actions.

Initial Issue - Xerox Internal Use Only 9/2014 Image Quality

Xerox WorkCentre 6655 Color Multifunction Printer 3-13 IQ10, IQ11
IQ12 Fog, Background Contamination Y N
Perform SCP 6 Final Actions.
There is toner contamination on all or part of the page (Figure 1). The contamination appears
as a very light single or multi-color dusting or fog. Replace the Imaging Unit of the affected color and reprint the test print. The image includes
background defects.
WARNING Y N
Switch off the electricity to the machine. Disconnect the power cord from the customer Perform SCP 6 Final Actions.
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. Remove and examine the Transfer Belt Assembly for surface contamination or excessive
WARNING wear. The Transfer Belt Assembly is good.
Y N
Do not touch the Fuser while it is hot. Replace the Transfer Belt Assembly, REP 6.1.97.
Initial Actions
Replace the HVPS, REP 18.1.16, and print a test print. The image includes background
• Check media type settings are correct.
defects.
• Some glossy media or photo paper will exhibit high background. If the issue only occurs
Y N
on a particular media, try a different brand.
Perform SCP 6 Final Actions.
• Check that the paper is clean, dry, and meets specifications.
• Verify the Toner Cartridge is a Xerox manufactured part with adequate life remaining. If a Replace the MCU Board, REP 18.1.11. The image includes background defects.
non-Xerox Toner Cartridge is being used, this could be the problem. Y N
• Clean the Drum Cartridge contacts. Perform SCP 6 Final Actions.
• Ensure covers are in place and no outside light enters the printer.
Replace the IP Board, REP 18.2.6.

Figure 1 Background defect example

Procedure
Check the paper condition. Load new, dry recommended paper, and print a test print. The
image includes background defects.
Y N
Perform SCP 6 Final Actions.

If the background is in only one color, remove the Imaging Unit, clean the electrical contacts,
then print a test print. The image includes background defects.

Image Quality 9/2014 Initial Issue - Xerox Internal Use Only

IQ12 3-14 Xerox WorkCentre 6655 Color Multifunction Printer
IQ13 Bead-Carry-Out (BCO) IQ14 Jagged Characters
Multiple dots appearing across image (Figure 1). Text in image is fuzzy or blurry (Figure 1).

WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
WARNING WARNING
Do not touch the Fuser while it is hot. Do not touch the Fuser while it is hot.
Initial Actions Initial Actions
• Check that the paper is clean, dry, and meets specifications. • Check that the paper is clean, dry, and meets specifications.
• Inspect the paper path for items, such as staples, paper clips, and paper scraps. • Inspect the paper path for items, such as staples, paper clips, and paper scraps.
• Check CRU life counts. Replace components at end of life. • Check CRU life counts. Replace components at end of life.

Figure 1 Bead-carry-out example

Figure 1 Jagged characters example

Procedure
Procedure
Check altitude of printer installation location. The printer is within specified altitude limits.
On the Printer Options tab, set Print Quality to Enhanced. The problem persists.
Y N
Y N
Relocate printer to within specified altitude limits.
Task complete.
Perform SCP 6 Final Actions.
Perform SCP 6 Final Actions.
Replace the Imaging Units. The problem persists.
If using a downloaded font, ensure that the font is recommended for the printer, operating sys-
Y N
tem, and the application being used. The problem persists.
Task complete.
Y N
Perform SCP 6 Final Actions.
Task complete.
Perform SCP 6 Final Actions.
Check the Development HVPS Board connector connection. The Development HVPS Board
connector is connected correctly.
Replace the IP Board, REP 18.2.6.
Y N
Connect the connector.

Replace the Development HVPS Board.

Initial Issue - Xerox Internal Use Only 9/2014 Image Quality

Xerox WorkCentre 6655 Color Multifunction Printer 3-15 IQ13, IQ14
 A
IQ15 Horizontal Bands (voids, streaks) Replace the Transfer Belt Assembly, REP 6.1.97; the Transfer Roller, REP 14.1.99; and the
Retard Roller, REP 13.3.98. The problem persists.
Use this procedure to correct defects that appear as areas of horizontal bands (Figure 1).
Y N
The task is complete.
Initial Actions Perform SCP 6 Final Actions.
• Check that the paper is clean, dry, and meets specifications.
• Inspect the paper path for items, such as staples, paper clips, and paper scraps. Contact Xerox Technical Support.
• Check CRU life counts. Replace components at end of life.

Figure 1 Horizontal bands, voids, or streaks example

Procedure
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
Do not touch the Fuser while it is hot.
Determine the cause of the problem using test prints. Cannot determine the part causing
the problem.
Y N
Proceed to the task below corresponding to the problem part.

Replace the Imaging Units, REP 8.1.95. The problem persists.

Y N
The task is complete.
Perform SCP 6 Final Actions.

Replace the Fuser Assembly, REP 7.1.1. The problem persists.

Y N
The task is complete.
Perform SCP 6 Final Actions.

A
Image Quality 9/2014 Initial Issue - Xerox Internal Use Only
IQ15 3-16 Xerox WorkCentre 6655 Color Multifunction Printer
IQ16 Auger Mark IQ17 Wrinkled/Stained Paper
Auger marks appear across output (Figure 1). The page comes out of the Output Tray either wrinkled, creased, stained, or torn (Figure 1).

WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
WARNING WARNING
Do not touch the Fuser while it is hot. Do not touch the Fuser while it is hot.
Initial Actions Initial Actions
• Check that the paper is clean, dry, and meets specifications. • Check that the paper is clean, dry, and meets specifications.
• Inspect the paper path for items, such as staples, paper clips, and paper scraps. • Inspect the paper path for items, such as staples, paper clips, and paper scraps.
• Check CRU life counts. Replace components at end of life. • Check CRU life counts. Replace components at end of life.

Figure 1 Auger marks example Figure 1 Wrinkled, torn, stained paper example

Procedure Procedure
Replace the Imaging Units. The problem persists. Verify that correct print media is being used and replace media if needed. The problem per-
Y N sists.
Task complete. Y N
Perform SCP 6 Final Actions. Task complete.
Perform SCP 6 Final Actions.
Contact Xerox Technical Support.
Check if problem occurs on paper sheets or on envelopes. Problem occurs on paper
sheets.
Y N
Check the location of wrinkles on the envelope. Are wrinkles more than 30 mm from
the four edges of the envelope?
Y N
This type of wrinkle is considered normal. Your printer is not at fault.

Reload the envelopes in the Bypass Tray properly. The problem persists.
A
Initial Issue - Xerox Internal Use Only 9/2014 Image Quality
Xerox WorkCentre 6655 Color Multifunction Printer 3-17 IQ16, IQ17
A
Y N IQ18 Leading Edge Paper Damage
The task is complete.
The page comes out of the Output Tray with the leading edge damaged (Figure 1).
Continue with the procedure.
WARNING
Reload the paper loaded in the paper cassette by removing the cassette, adjusting the paper Switch off the electricity to the machine. Disconnect the power cord from the customer
guides, and reloading the paper properly. Reinstall the cassette and perform a test print. The supply while performing tasks that do not need electricity. Electricity can cause death or
problem persists. injury. Moving parts can cause injury.
Y N WARNING
The task is complete.
Do not touch the Fuser while it is hot.
Check the paper humidity conditioning effect by loading recommended paper from unopened Initial Actions
package or that has been sealed and stored under humidity control. Perform a test print. The • Check that the paper is clean, dry, and meets specifications.
problem persists.
• Inspect the paper path for items, such as staples, paper clips, and paper scraps.
Y N
• Check CRU life counts. Replace components at end of life.
The task is complete.

Check the paper type setting. Does the paper type setting correspond with the paper
printed?
Y N
Set the correct paper type.

Check the paper transfer path. The path is clear of any smears or foreign substances on
the path between the paper entrance and the paper exit.
Y N
Remove the foreign substances.

Check the paper feed path roller. The roller on the paper feed path is not dirty, damaged,
or worn; it works correctly; or the roller is installed correctly.
Y N
Clean or replace the corresponding roller, and reinstall it.

Check the installation status of the Transfer Roller. The Transfer Roller is installed cor-
rectly.
Figure 1 Leading edge paper damage example
Y N
Reinstall Transfer Roller.
Procedure
Check the Fuser Assembly. The Fuser Assembly is installed correctly. Check if damage occurs when using the Bypass Tray or with other trays. The problem does
Y N not occur when using the Bypass Tray.
Reinstall the Fuser Assembly. Y N
Reverse the paper in the Bypass Tray and try again. The problem persists.
Check the Fuser Assembly. Y N
WARNING The task is complete
Do not touch the fuser while it is hot.
Insert a different sheet of paper in the Bypass Tray and try again. The problem persists.
Remove the Fuser Assembly, turn the gear by hand, and examine the Heat Roll section The
Y N
Heat Roll section is not dirty or damaged, and it works correctly.
The task is complete.
Y N
Replace the Fuser Assembly.
Use another tray in place of the Bypass Tray. The problem persists.
Y N
Contact Xerox Technical Support.
The task is complete.

A B
Image Quality 9/2014 Initial Issue - Xerox Internal Use Only
IQ17, IQ18 3-18 Xerox WorkCentre 6655 Color Multifunction Printer
A B
Go to the next action. IQ19 Incorrect Top and Side Margins
Image prints outside of the page margins (Figure 1).
Reload the paper loaded in the paper cassette by removing the cassette, adjusting the paper
guides, and reloading the paper properly. Reinstall the cassette and perform a test print. The
problem persists. WARNING
Y N Switch off the electricity to the machine. Disconnect the power cord from the customer
The task is complete. supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
Check the paper humidity conditioning effect by loading recommended paper from unopened Initial Actions
package or that has been sealed and stored under humidity control. Perform a test print. The
• Check that the paper is clean, dry, and meets specifications.
problem persists.
Y N • Inspect the paper path for items, such as staples, paper clips, and paper scraps.
The task is complete. • Check CRU life counts. Replace components at end of life.

Check the paper type setting. Does the paper type setting correspond with the paper
printed?
Y N
Set the correct paper type.

Check the paper transfer path. The path is clear of any dirt or foreign substances on the
paper transfer path.
Y N
Remove the foreign substances.

Check the paper feed path roller. The roller on the paper feed path is not dirty, damaged,
or worn; it works correctly; and it is installed correctly.
Y N
Clean or replace the corresponding roller, and reinstall it.

Check the installation status of the Transfer Roller. The Transfer Roller is installed cor-
rectly.
Y N
Reinstall Transfer Roller. Figure 1 Incorrect margins example

Check the Fuser Assembly installation. The Fuser Assembly is installed correctly.
Procedure
Y N
Reinstall the Fuser Assembly. Ensure the margins are set correctly on the application being used. The problem persists.
Y N
Check the Fuser Assembly. Task complete.
WARNING Perform SCP 6 Final Actions.

Do not touch the fuser while it is hot. Replace the MCU Board, REP 18.1.11. The problem persists.
Remove the Fuser Assembly, turn the gear by hand, and examine the Heat Roll section The Y N
Heat Roll section is not dirty or damaged, and it works correctly. The task is complete.
Y N
Replace the Fuser Assembly. Replace the IP Board, REP 18.2.6. The problem persists.
Y N
Contact Xerox Technical Support. The task is complete.

Call Xerox Technical Support.

Initial Issue - Xerox Internal Use Only 9/2014 Image Quality

Xerox WorkCentre 6655 Color Multifunction Printer 3-19 IQ18, IQ19
 A
IQ20 Color Registration is Out of Alignment Check the installation status of the drum unit. Remove the Imaging Unit Y/M/C/K. Each imag-
ing unit is installed correctly, and the contacts at each end of the imaging units are clean
Image colors are not aligned with each other (Figure 1).
and free of deformation.
Y N
WARNING Restore and clean the interface. Reinstall the Imaging Unit Y/M/C/K.
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or Replace the Imaging Units. The problem persists.
injury. Moving parts can cause injury. Y N
Initial Actions The task is complete.

• Check that the paper is clean, dry, and meets specifications.

Check for dirt and foreign substances on the CTD Sensor surface. The CTD Sensor Assem-
• Inspect the paper path for items, such as staples, paper clips, and paper scraps. bly sensor surface is clean, or are there no foreign substances on the surface.
• Check CRU life counts. Replace components at end of life. Y N
Clean the CTD sensor surface or remove the foreign substance with a cotton swab. Do
not use alcohol.

Replace the Transfer Belt Assembly. The problem persists.

Y N
The task is complete.

Replace the Laser Unit. The problem persists.

Y N
The task is complete.

Contact Xerox Technical Support.

Figure 1 Color registration misalignment example

Procedure
Adjust the settings of the paper type on the printer driver to those of the tray. The problem
persists.
Y N
Task complete.
Perform SCP 6 Final Actions.

Perform the auto color registration adjustment described in Setting Automatic Color Registra-
tion. The problem persists.
Y N
The task is complete.

Manually correct the color registration using Performing a Manual Color Registration Adjust-
ment. The problem persists.
Y N
The task is complete.

A
Image Quality 9/2014 Initial Issue - Xerox Internal Use Only
IQ20 3-20 Xerox WorkCentre 6655 Color Multifunction Printer
IQ21 Images are Skewed Y N
The task is complete.
Images in the output are not parallel to the edge of the printed sheet (Figure 1).
Check the paper type setting. The paper type setting corresponds with the paper printed.
WARNING Y N
Switch off the electricity to the machine. Disconnect the power cord from the customer Set the correct paper type.
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. Check the paper transfer path. There is no dirt or foreign substances on the paper trans-
WARNING fer path between the paper entrance and the paper exit.
Y N
Do not touch the Fuser while it is hot.
Remove the foreign substance.
Initial Actions
• Check that the paper is clean, dry, and meets specifications. Check the paper feed path roller. The roller on the paper feed path is not dirty, damaged,
or worn; it works correctly; and it is installed correctly.
• Inspect the paper path for items, such as staples, paper clips, and paper scraps.
Y N
• Check CRU life counts. Replace components at end of life.
Clean or replace the corresponding roller, and reinstall it

Check the installation status of the Transfer Roller. The Transfer Roller is installed cor-
rectly.
Y N
Reinstall the Transfer Roller.

Check the installation status of the Fuser Assembly. The Fuser Assembly is installed cor-
rectly.
Y N
Reinstall the Fuser Assembly.

Contact Xerox Technical Support.

Figure 1 Skewed image example

Procedure
Adjust the paper guides properly. The problem persists.
Y N
Task complete.
Perform SCP 6 Final Actions.

Install the Transfer Belt Assembly according to an appropriate procedure. The problem per-
sists.
Y N
Task complete.
Perform SCP 6 Final Actions.

Check the paper humidity conditioning effect by loading recommended paper from unopened
package or that has been sealed and stored under humidity control. Perform a test print. The
problem persists.

Initial Issue - Xerox Internal Use Only 9/2014 Image Quality

Xerox WorkCentre 6655 Color Multifunction Printer 3-21 IQ21
Image Quality 9/2014 Initial Issue - Xerox Internal Use Only
IQ21 3-22 Xerox WorkCentre 6655 Color Multifunction Printer
 4 Repair and Adjustment Procedures
Repair Procedures REP 10.2.1 550 Option Main Feed Assembly................................................................. 4-41
REP 1.1.2 IIT Front Cover............................................................................................... 4-3 REP 10.2.2 550 Option Registration Clutch Assembly ................................................... 4-42
REP 1.1.3 IIT Front Bottom Cover .................................................................................. 4-3 REP 10.2.3 550 Option Feed Roller Assembly ............................................................... 4-43
REP 1.1.4 Right Upper UI Base Cover ........................................................................... 4-4 REP 13.1.98 Bypass TA1 Roller Assembly..................................................................... 4-43
REP 1.1.6 Left UI Base Cover ........................................................................................ 4-4 REP 13.1.99 Bypass TA2 Roller Assembly..................................................................... 4-44
REP 1.2.1 Control Panel Assembly ................................................................................ 4-5 REP 13.2.1 Bypass Tray Frame Assembly ..................................................................... 4-44
REP 1.2.2 Upper Rear UI Cover ..................................................................................... 4-6 REP 13.2.4a Bypass Tray No Paper Sensor .................................................................. 4-45
REP 1.2.3 UI Hinge Cover .............................................................................................. 4-6 REP 13.2.4b Bypass Tray Sensor................................................................................... 4-46
REP 1.2.9 Control Panel UI Cable .................................................................................. 4-7 REP 13.2.10 Bypass Tray Feed Roller Assembly........................................................... 4-46
REP 1.2.98 UI Hinge Assembly ...................................................................................... 4-8 REP 13.2.98 Bypass Tray Feed Roller Assembly Kit...................................................... 4-47
REP 2.1.1 Laser Unit Assembly...................................................................................... 4-9 REP 13.2.99 Bypass Tray Feed Solenoid Assembly ...................................................... 4-48
REP 3.1.1 Main Drive Assembly ..................................................................................... 4-10 REP 13.3.1 Bypass Tray Assembly ................................................................................ 4-48
REP 3.1.2 Waste Drive Assembly................................................................................... 4-12 REP 13.3.2 Bypass Tray Cover Assembly...................................................................... 4-49
REP 3.1.8 Drive Shaft Assembly .................................................................................... 4-13 REP 13.3.4 Bypass Tray Lower Cover............................................................................ 4-50
REP 3.1.9 Waste Bearing Assembly............................................................................... 4-14 REP 13.3.5 Bypass Tray Chute Assembly...................................................................... 4-50
REP 4.1.6 S3 Rear Frame .............................................................................................. 4-15 REP 13.3.98 Bypass Tray Separator Roller Assembly ................................................... 4-51
REP 4.1.13 Main Fan...................................................................................................... 4-15 REP 13.3.99 Bypass Tray Pinch Roller Assembly .......................................................... 4-52
REP 4.1.17 Toner Full Sensor ........................................................................................ 4-16 REP 14.1.1 Duplex Assembly ......................................................................................... 4-53
REP 4.1.97 Left Rear Latch ............................................................................................ 4-16 REP 14.1.4 Rear Hinge Bracket...................................................................................... 4-54
REP 4.1.98 Foot Assembly ............................................................................................. 4-17 REP 14.1.99 CRU Transfer Roller Assembly.................................................................. 4-54
REP 4.1.99 Right Rear Latch.......................................................................................... 4-17 REP 15.1.4 Lower and Opt 550 Registration Chutes...................................................... 4-55
REP 5.1.1 Upper Dispenser Motor Assembly ................................................................. 4-18 REP 15.1.6 Upper Transfer Belt Chute Assembly .......................................................... 4-56
REP 5.1.2 Dispenser Motor ............................................................................................ 4-20 REP 15.1.8 Registration Clutch Assembly ...................................................................... 4-57
REP 5.1.4 Dispenser Assemblies Y, M, C, K .................................................................. 4-22 REP 15.1.10 Cassette Stopper ....................................................................................... 4-58
REP 5.1.8 Toner Cartridges Y, M, C, K .......................................................................... 4-24 REP 15.1.98 Duplex Chute Assembly............................................................................. 4-59
REP 6.1.5 Waste Box Lock............................................................................................. 4-24 REP 15.1.99 Registration Chute Assembly Kit ............................................................... 4-60
REP 6.1.6 Left Transfer Belt Guide Assembly ................................................................ 4-25 REP 15.2.1 Registration Chute Assembly....................................................................... 4-61
REP 6.1.14 Color Toner Density (CTD) Sensor Assembly ............................................. 4-26 REP 15.2.2 Right / Left Registration Bearings ................................................................ 4-63
REP 6.1.97 Transfer Belt Assembly................................................................................ 4-27 REP 15.2.5 Duplex Clutch Assembly .............................................................................. 4-64
REP 6.1.98Transfer Belt Right Latch Kit ......................................................................... 4-28 REP 15.2.6 550 Option Feed Clutch Assembly .............................................................. 4-64
REP 6.1.99 Coupling Kit ................................................................................................. 4-30 REP 15.2.7 Feed Roller Assembly.................................................................................. 4-65
REP 7.1.1 Fuser Assembly ............................................................................................. 4-31 REP 15.2.10 No Paper Actuator ..................................................................................... 4-65
REP 8.1.1 Transfer CRUM Connector Assembly ........................................................... 4-31 REP 17.1.1 Exit Assembly .............................................................................................. 4-66
REP 8.1.6 Cleaner Assembly.......................................................................................... 4-32 REP 17.1.10 Stack Full Actuator..................................................................................... 4-67
REP 8.1.7 Waste Box Assembly ..................................................................................... 4-33 REP 17.1.21 Exit Drive Assembly ................................................................................... 4-68
REP 8.1.95 CRU Xerographic Development Assembly (Imaging Unit) .......................... 4-33 REP 18.1.11 MCU Board ................................................................................................ 4-69
REP 9.1.1 IOT 550 Cassette Assembly .......................................................................... 4-34 REP 18.1.12 Development HVPS Board ........................................................................ 4-70
REP 9.1.96 Feed Roller Assembly.................................................................................. 4-35 REP 18.1.16 Transfer HVPS Board ................................................................................ 4-70
REP 9.1.97 Cassette Retard Holder Assembly............................................................... 4-35 REP 18.1.19 Drawer 1 Feeder ........................................................................................ 4-71
REP 10.1.1 Optional 550-Sheet Feeder ......................................................................... 4-36 REP 18.1.22 Front Door Interlock Photo Sensor ............................................................ 4-71
REP 10.1.2 550 Option Left-Side Cover and Frame....................................................... 4-37 REP 18.1.23 Transfer HVPS Harness ............................................................................ 4-72
REP 10.1.6 550 Option Cassette Stopper ...................................................................... 4-37 REP 18.1.99 Varistor....................................................................................................... 4-73
REP 10.1.8 550 Option Feed Clutch Assembly .............................................................. 4-38 REP 18.2.2 IIT MCU Board Assembly ............................................................................ 4-73
REP 10.1.9 550 Option Drive Assembly ......................................................................... 4-39 REP 18.2.4 Hard Disk Package Kit ................................................................................. 4-75
REP 10.1.10 550 Option Feeder Board .......................................................................... 4-39 REP 18.2.6 IP (ESS) Board ............................................................................................ 4-76
REP 10.1.11 550 Option Size Switch Assembly ............................................................. 4-40 REP 18.2.7 IP (ESS) Plate Assembly ............................................................................. 4-77
REP 10.1.13 550 Option Drawer1 Feeder Harness Assembly ....................................... 4-40 REP 18.2.8 IP (ESS) Box................................................................................................ 4-78

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-1
REP 18.2.9 DDR3 DIMM Module Assembly ................................................................... 4-79
REP 18.2.10 SD Card ..................................................................................................... 4-79
REP 18.2.11 Fax Board .................................................................................................. 4-80
REP 18.2.13 Fax USB Cable .......................................................................................... 4-80
REP 18.2.15 Front USB Cable Assembly ....................................................................... 4-81
REP 18.2.16 IP (ESS) Fan.............................................................................................. 4-81
REP 18.3.2 LVPS............................................................................................................ 4-82
REP 18.3.9 Stapler Assembly ......................................................................................... 4-83
REP 18.3.12 Stapler Sub LVPS...................................................................................... 4-84
REP 18.3.99 AC Inlet Harness Assembly ....................................................................... 4-85
REP 18.4.2 Drive Harness Assembly ............................................................................. 4-85
REP 18.4.3 Main Harness Assembly .............................................................................. 4-86
REP 18.4.5 Top Harness Assembly................................................................................ 4-86
REP 19.1.1 Top Cover Assembly ................................................................................... 4-87
REP 19.1.20 Front Door Assembly ................................................................................. 4-89
REP 19.1.28 Staple Box ................................................................................................. 4-90
REP 19.1.96 Right Side Door Assembly ......................................................................... 4-90
REP 19.1.97 Right Cover Assembly ............................................................................... 4-91
REP 19.1.98 Right Interlock Switch Assembly................................................................ 4-92
REP 19.1.99 Stapler Right Side Cover ........................................................................... 4-93
REP 19.2.3 Left Side IF Cover........................................................................................ 4-94
REP 19.2.4 Top Exit Cover ............................................................................................. 4-94
REP 19.2.98 Rear Cover Assembly................................................................................ 4-95
REP 19.2.99 Left Cover Assembly.................................................................................. 4-96
REP 51.1.1 DADF Assembly .......................................................................................... 4-97
REP 51.1.9 DADF Hinges............................................................................................... 4-98
REP 51.1.11 DADF Input Tray Assembly ....................................................................... 4-99
REP 51.1.14 Scanner (IIT) Assembly ............................................................................. 4-100
REP 51.1.97 DADF Pick-Up Module............................................................................... 4-102
REP 51.1.98 DADF Top Cover Assembly....................................................................... 4-103

Adjustments & Cleaning

ADJ 1.1 Altitude Adjustment ........................................................................................... 4-105
ADJ 2.1 Laser Lens Cleaning ......................................................................................... 4-105
ADJ 5.1 Color Registration Adjustment........................................................................... 4-108
ADJ 6.1 Color Toner Density Sensors Cleaning ............................................................. 4-110
ADJ 6.2 Transfer Belt Offsets Adjustment ...................................................................... 4-114
ADJ 6.3 Transfer Roller Bias Adjustment........................................................................ 4-114
ADJ 7.1 Fuser Adjustment .............................................................................................. 4-115
ADJ 9.1 Paper Type Adjustment ..................................................................................... 4-116

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
4-2 Xerox WorkCentre 6655 Color Multifunction Printer
REP 1.1.2 IIT Front Cover REP 1.1.3 IIT Front Bottom Cover
Parts List on PL 1.1 Item 2 Parts List on PL 1.1 Item 3
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Tilt the Control Panel down and swivel to the front. 1. Remove the IIT Front Cover, REP 1.1.2.
2. Refer to Figure 1 to locate and detach the left ends of both the Front Cover and Front Bot- 2. Referring to Figure 1, detach the left end of the Front Bottom Cover from the Front Cover,
tom Cover from the scanner. then separate the covers.
3. Pull the covers forward, then move to the right to unhook the right side of the cover from
the scanner.

Figure 1 Remove the IIT Front Bottom Cover

Figure 1 Remove the IIT Front Cover

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-3 REP 1.1.2, REP 1.1.3
REP 1.1.4 Right Upper UI Base Cover REP 1.1.6 Left UI Base Cover
Parts List on PL 1.1 Item 4 Parts List on PL 1.1 Item 6
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Open the Front Cover. 1. Open the Front Cover.
2. Remove the Left UI Base Cover, REP 1.1.6. 2. Refer to Figure 1 to locate and remove one screw (silver, 6 mm) to remove the cover.
3. Remove the UI Hinge Cover, REP 1.2.3.
4. Referring to Figure 1, slide the Right UI Base Cover forward while tilting to the right to
remove.

Figure 1 Remove the Left UI Base Cover

Figure 1 Remove the Right UI Base Cover

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 1.1.4, REP 1.1.6 4-4 Xerox WorkCentre 6655 Color Multifunction Printer
REP 1.2.1 Control Panel Assembly 5. Refer to Figure 2 to locate and remove four screws (silver, 6 mm) that secure the Control
Panel to the UI Hinge Assembly.
Parts List on PL 1.2 Item 1
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
CAUTION
The UI Cable connector is easily damaged. Use care when connecting, disconnecting, and
routing the UI Cable through the UI Hinge Assembly.
1. Remove the UI Hinge Cover, REP 1.2.3.
2. Remove the Upper Rear UI Cover, REP 1.2.2.
3. Refer to Figure 1 to locate and remove one screw and one tie that secure the UI cable to
the Control Panel.

Figure 2 Remove the Control Panel from the UI Hinge Assembly

Figure 1 Disconnect the Control Panel Cable

4. Disconnect the UI cable from the Control Panel.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-5 REP 1.2.1
REP 1.2.2 Upper Rear UI Cover REP 1.2.3 UI Hinge Cover
Parts List on PL 1.2 Item 2 Parts List on PL 1.2 Item 3, PL 1.2 Item 4
Removal Removal
WARNING The UI Hinge Cover consists of two parts (left and right) held together on the UI Hinge Assem-
bly by a single screw.
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. WARNING
1. Remove the UI Hinge Cover, REP 1.2.3. Switch off the electricity to the machine. Disconnect the power cord from the customer
2. Refer to Figure 1 to locate and remove one screw (silver, tapping, 8 mm) that secures the supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
cover.
1. Refer to Figure 1 to locate and remove one screw (silver, 6 mm) that secures the covers.
2. Detach the back of the right-side cover while lifting the front edge, then slide forward to
remove.
3. Detach the tab at the back of the left-side cover while lifting the front edge, then slide for-
ward to remove.

Figure 1 Remove the Upper Rear UI Cover

Figure 1 Remove the UI Hinge Cover

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 1.2.2, REP 1.2.3 4-6 Xerox WorkCentre 6655 Color Multifunction Printer
REP 1.2.9 Control Panel UI Cable 10. Remove the Upper Rear UI Cover, REP 1.2.2.
11. Refer to Figure 2 to disconnect the cable from the Control Panel, then locate and remove
Parts List on PL 1.2 Item 9 one screw and one tie that secure the cable to the UI Hinge. While adjusting the Control
Removal Panel position as needed, remove the cable from the UI Hinge Assembly.
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
CAUTION
The UI Cable connector is easily damaged. Use care when connecting, disconnecting, and
routing the UI Cable through the UI Hinge Assembly.
1. Open the Rear Cover.
2. Remove the Left Side IF Cover, REP 19.2.3.
3. Remove the Left UI Base Cover, REP 1.1.6.
4. Remove the Left Cover, REP 19.2.99.
5. Remove the five screws (silver, 6 mm) holding the IIT MCU Plate and remove the plate.
6. Disconnect the harnesses from along the top edge of the IIT MCU Board.
7. Remove the three screws (silver, 6 mm) that hold the IIT MCU Box to the chassis, and pull
the IIT MCU Box away from the chassis for access to the UI Cable.
8. Referring to Figure 1, release the UI Control Panel Cable from the cable guide, one
clamp, and one tie that secure the cable to the chassis.

Figure 2 Remove the Control Panel UI Cable

Figure 1 Release the Control Panel Cable

9. Remove the UI Hinge Cover, REP 1.2.3.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-7 REP 1.2.9
REP 1.2.98 UI Hinge Assembly
Parts List on PL 1.2 Item 98
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
CAUTION
The UI Cable connector is easily damaged. Use care when connecting, disconnecting, and
routing the UI Cable through the UI Hinge Assembly.
1. Remove the UI Hinge Cover, REP 1.2.3.
2. Remove the Left UI Base Cover, REP 1.1.6.
3. Remove the Right UI Base Cover, REP 1.1.4.
4. Remove the Upper Rear UI Cover, REP 1.2.2.
5. Remove the Control Panel, REP 1.2.1.
6. Remove the UI cable from the UI Hinge Assembly.
7. Refer to Figure 1 to locate and remove one screw (silver, 6 mm) that secures the UI
swivel stop.

Figure 2 Remove the UI Hinge Assembly

Figure 1 Remove the UI Swivel Stopper

8. Refer to Figure 2 to locate and remove three screws (silver, 6 mm) that secure the UI
Hinge Assembly to the chassis, then tilt and slide the UI Hinge Assembly to the right to
remove.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 1.2.98 4-8 Xerox WorkCentre 6655 Color Multifunction Printer
REP 2.1.1 Laser Unit Assembly Replacement
Parts List on PL 2.1 Item 1 When replacing the Laser Unit Assembly, be sure to install it along the guides as shown in Fig-
ure 2:
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove all the Dispenser Assemblies Y, M, C, K, REP 5.1.4.
2. Remove the nine screws (silver, 6 mm) securing the IP Plate Assembly.
3. Refer to Figure 1 to locate and remove the two screws (silver, tapping, 8 mm) that attach
the Base Duct to the printer and remove the duct. One screw is at the top, the other at the
front.
4. Release the clamp holding the harness to the Laser Unit Assembly
5. Remove the two screws (silver, 6 mm) that attach the Laser Unit Assembly and remove
the Laser Unit Assembly while pulling the harness out of the hole on the frame.

Figure 2 Replace the Laser Unit Assembly Along the Guides

Figure 1 Remove the Laser Unit Assembly

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-9 REP 2.1.1
REP 3.1.1 Main Drive Assembly
Parts List on PL 3.1 Item 1
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the Development HVPS Board, REP 18.1.12.
2. Remove the IP Box, REP 18.2.8.
3. Refer to Figure 1 to locate and remove the screw (silver, 6 mm) that attaches the HV
Ground Plate to the printer and remove the plate.

Figure 2 Remove the Video Harness Guide

9. Release the harnesses from the clamp at the bottom of the Drive Assembly.
10. Refer to Figure 2 to locate and remove the four screws (silver, 6 mm) that attach the
Video Harness Guide to the printer and remove the guide.
11. Open the Right Side Door, then lift the Top Cover.
12. Remove the Transfer 2 Link from the Transfer Link Holder (shown in Figure 3).
CAUTION
When performing the following step to remove the Drive Assembly, use caution not to drop the
gears
13. Remove the ten screws (silver, 6 mm) that attach the Drive Assembly to the printer and
remove the assembly.

Figure 1 Remove the Left Harness Guide

4. Release the harness from the Left Harness Guide.

5. Release the harness from the Video Harness Guide (shown in Figure 2).
6. Refer to Figure 1 to locate and remove the two screws (silver, 6 mm) that attach the Left
Harness Guide to the printer.
7. Release the pawl holding the Left Harness Guide and remove the guide.
8. Refer to Figure 2 to locate and disconnect plugs P/J171, P/J311, P/J172, P/J312, P/J331,
P/J213 from the three drive motors and the interim connector from the jack inside the
Main Drive Assembly.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 3.1.1 4-10 Xerox WorkCentre 6655 Color Multifunction Printer
 NOTE: When placing the Drive Assembly on the workbench, face the gear side upward to NOTE: Figure 4 shows how the gears are installed to the Drive Assembly.
prevent the gears from falling off.

Figure 4 Installation of Gears on Drive Assembly

Replacement
When the installation hole of the Transfer 2 Link for the Transfer Link Holder is lowered, raise it
by accessing the Transfer Link Coupling from inside the frame as shown in Figure 5.

Figure 3 Remove the Drive Assembly

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-11 REP 3.1.1
 REP 3.1.2 Waste Drive Assembly
Parts List on PL 3.1 Item 2
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned
1. Remove the Right Cover Assembly, REP 19.1.97.
2. Release the harness from the clamp installed on the Waste Drive Assembly.
3. Refer to Figure 1 to locate and remove two screws (silver, tapping, 8 mm) and two screws
(silver, 6 mm) (silver, M4, 6 mm) that attach the Waste Drive Assembly to the printer and
ground wire, then remove the Waste Drive Assembly.

Figure 5 Reconnect the Transfer 2 Link to the Transfer Link Coupling

Figure 1 Remove the Waste Drive Assembly

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 3.1.1, REP 3.1.2 4-12 Xerox WorkCentre 6655 Color Multifunction Printer
REP 3.1.8 Drive Shaft Assembly NOTE: Remove Waste Bearing 2.

Parts List on PL 3.1 Item 8

Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Main Drive Assembly, REP 3.1.1.
2. Remove the Duplex Chute Assembly, REP 15.1.98.
3. Release the harness from the LV AC Harness Guide.
4. Refer to Figure 1 to locate and remove the screw (silver, 6 mm) that attaches the LV AC
Harness Guide to the printer and remove the guide.
5. Release the hook of Waste Gear 3 and remove the gear.
6. Release the hook of Waste Gear 2 and remove the gear.
7. Unlock Waste Bearing 1 and rotate the bearing to remove it.
8. Remove the Waste Idler Shaft by pulling it out of the hole in the frame.

Figure 1 Remove the Drive Shaft Assembly

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-13 REP 3.1.8
REP 3.1.9 Waste Bearing Assembly
Parts List on PL 3.1 Item 9
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Main Drive Assembly, REP 3.1.1.
2. Remove the Duplex Chute Assembly, REP 15.1.98.
3. Release the harness from the LV AC Harness Guide.
4. Refer to Figure 1 to locate and remove the screw (silver, 6 mm) that attaches the LV AC
Harness Guide to the printer and remove the guide.
5. Release the hook of Waste Gear 3 and remove the gear.
6. Release the hook of Waste Gear 2 and remove the gear.
7. Unlock Waste Bearing 1 and rotate the bearing to remove it.
8. Remove the Waste Idler Shaft by pulling it out of the hole on the frame.
9. Remove Waste Bearing 2.

Figure 1 Remove the Waste Bearing

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 3.1.9 4-14 Xerox WorkCentre 6655 Color Multifunction Printer
REP 4.1.6 S3 Rear Frame REP 4.1.13 Main Fan
Parts List on PL 4.1 Item 6 Parts List on PL 4.1 Item 13
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
WARNING 1. Remove the Right Cover Assembly REP 19.1.97.
The Fuser is very hot. Take added care when handling the fuser to avoid being burned. 2. Unplug connector P/J503 from the LVPS, and release the harness from the clamp.
1. Remove the Waste Box, REP 8.1.7. 3. Refer to Figure 1 to locate and remove the two screws (silver, tapping, 30 mm) that attach
the Main Fan to the printer, and remove the fan.
2. Remove the Waste Box Lock, REP 6.1.5.
3. Remove the Front Door Assembly, REP 19.1.20.
4. Remove the Right Cover Assembly, REP 19.1.97.
5. Remove the Left Cover Assembly, REP 19.2.99.
6. Remove the IP Box, REP 18.2.8.
7. Refer to Figure 1 to locate and remove the four screws (silver, 6 mm) that attach the S3
Rear Frame to the printer and remove the frame.

Figure 1 Remove the Main Fan

Figure 1 Remove the S3 Rear Frame Replacement

Orient the Main Fan during installation so that the label side faces inward.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-15 REP 4.1.6, REP 4.1.13
REP 4.1.17 Toner Full Sensor REP 4.1.97 Left Rear Latch
Parts List on PL 4.1 Item 17 Parts List on PL 4.1 Item 97
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove the Waste Box, REP 8.1.7. WARNING
2. Refer to Figure 1 to locate and release the four hooks holding the Waste Sensor Cover The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
and remove the cover.
1. Remove the Fuser, REP 7.1.1.
3. Disengage connector P/J203 of the Toner Full Sensor.
2. Remove the IP Box, REP 18.2.6.
4. Release the hook holding the Toner Full Sensor and remove the sensor.
3. Refer to Figure 1 to locate and remove the two screws (silver, tapping, 8 mm) that attach
the Left Latch Bracket to the printer and remove the Left Latch Bracket.
4. Referring to the inset in Figure 1, remove the Left Rear Latch and the Latch Spring from
the Left Latch Bracket.

Figure 1 Remove the Toner Full Sensor

Figure 1 Remove the Left Rear Latch

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 4.1.17, REP 4.1.97 4-16 Xerox WorkCentre 6655 Color Multifunction Printer
REP 4.1.98 Foot Assembly REP 4.1.99 Right Rear Latch
Parts List on PL 4.1 Item 98 Parts List on PL 4.1 Item 99
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
CAUTION WARNING
When positioning the printer to overhang the edge of the workbench, make the overhang as The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
small as possible to prevent the printer from falling off.
1. Remove the Fuser, REP 7.1.1.
1. Position the front of the printer to overhang the edge of the workbench.
2. Remove the Right Side Cover, REP 19.1.97.
2. Refer to Figure 1 to locate and remove the screws (silver, 6 mm) that attach the Bottom
3. Refer to Figure 1 to locate and remove the Right Latch Spring on the right side of the
Feet on the front, and replace the feet.
printer and remove the Right Rear Latch.
3. Reposition the printer so that the rear of the printer overhangs the edge of the workbench.
4. Refer to Figure 1 to locate and remove the screws (silver, 6 mm) that attach the Bottom
Feet on the rear, and replace the feet.

Figure 1 Replace the Bottom Feet

Figure 1 Remove the Right Rear Latch

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-17 REP 4.1.98, REP 4.1.99
REP 5.1.1 Upper Dispenser Motor Assembly 6. Unplug connector P/J251 from the EEPROM Board.
7. Refer to Figure 2 to locate and remove the screw (silver, 6 mm) that attaches the HV
Parts List on PL 5.1 Item 1 Ground Plate to the printer and remove the plate.
Removal 8. Release the harness from the harness guide of the Outer Developer Charge Housing
WARNING Assembly.
Switch off the electricity to the machine. Disconnect the power cord from the customer NOTE: In the following step, do NOT remove the tapping screw (shown in the circle) that holds
supply while performing tasks that do not need electricity. Electricity can cause death or together the two pieces of the Outer Developer Charge Housing Assembly.
injury. Moving parts can cause injury.
9. Refer to Figure 2 to locate and remove the four screws (silver, 6 mm) that attach the Outer
NOTE: When doing the following step, it is not necessary to remove the board completely for Developer Charge Housing Assembly and remove it.
access to the Upper Dispenser Motor Assembly. It is necessary only to unplug the connector
from the MCU Board to the HVPS Board, and the connector to the Bypass Tray Frame Assem-
bly. Swing the board clockwise out of the way.

1. Remove the MCU Board, REP 18.1.11.

2. Remove the Development HVPS Board, REP 18.1.12.
3. Refer to Figure 1 to locate and unplug connector P/J145 of the Front Door Interlock Photo
Sensor.
4. Release the harness from the clamp installed on the MCU Plate.
5. Refer to Figure 1 to locate and remove three screws (silver, tapping, 8 mm) and two
screws (silver, 6 mm) that attach the MCU Plate to the printer and remove the plate.

Figure 2 Remove the Outer Developer Charge Housing Assembly

10. Release the two clamps of the Upper Dispenser Motor Assembly, and release the har-
ness.
11. Refer to Figure 3 to locate and remove the four screws (silver, 6 mm) that attach the
Upper Dispenser Motor Assembly to the printer and remove the assembly.

Figure 1 Remove the MCU Plate

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 5.1.1 4-18 Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 4 Replacing the Outer Developer Charge Housing Assembly

Figure 3 Remove the Upper Dispenser Motor Assembly

Replacement
When installing the Outer Developer Charge Housing Assembly, make sure that the tips of the
six springs are correctly in place as shown in Figure 4. (The Upper Dispenser Motor Assembly
is not shown in the figure for the sake of clarity.)

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-19 REP 5.1.1
REP 5.1.2 Dispenser Motor 6. Unplug connector P/J251 from the EEPROM Board.
7. Refer to Figure 2 to locate and remove the screw (silver, 6 mm) that attaches the HV
Parts List on PL 5.1 Item 2 Ground Plate to the printer and remove the plate.
Removal 8. Release the harness from the harness guide of the Outer Developer Charge Housing
WARNING Assembly.
Switch off the electricity to the machine. Disconnect the power cord from the customer NOTE: In the following step, do NOT remove the tapping screw (shown in the circle) that holds
supply while performing tasks that do not need electricity. Electricity can cause death or together the two pieces of the Outer Developer Charge Housing Assembly.
injury. Moving parts can cause injury.
9. Refer to Figure 2 to locate and remove the four screws (silver, 6 mm) that attach the Outer
NOTE: To remove only the Y, M Dispenser Motor, perform steps 1, 4, 5, 10, and 11. Developer Charge Housing Assembly and remove it.
1. Remove the MCU Board, REP 18.1.11.
2. Remove the Development HVPS Board, REP 18.1.12.
3. Refer to Figure 1 to locate and unplug connector P/J145 of the Front Door Open Sensor
(Interlock Photo Sensor).
4. Release the harness from the clamp installed on the MCU Plate.
5. Refer to Figure 1 to locate and remove the three screws (silver, tapping, 8 mm) and the
two screws (silver, 6 mm) that attach the MCU Plate to the printer and remove the plate.

Figure 2 Remove the Outer Developer Charge Housing Assembly

10. Unplug connectors P/J141 and P/J144 connected to the two Dispenser Motors.
11. Refer to Figure 3 to locate and remove the screws that attach each Dispenser Motor (sil-
ver, tapping, 8 mm) and remove each Dispenser Motor by rotating them counterclock-
wise.

Figure 1 Remove the MCU Plate

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 5.1.2 4-20 Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 4 Replacing the Outer Developer Charge Housing Assembly
Figure 3 Remove the Dispenser Motors

Replacement
When installing the Outer Developer Charge Housing Assembly, make sure that the tips of the
six springs are correctly in place as shown in Figure 4. (The Upper Dispenser Motor Assembly
is not shown in the figure for the sake of clarity.)

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-21 REP 5.1.2
REP 5.1.4 Dispenser Assemblies Y, M, C, K
Parts List on PL 5.1 Item 4, PL 5.1 Item 5, PL 5.1 Item 6, PL 5.1 Item 7
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.

NOTE: The Dispenser Assemblies must be removed in order from the bottom, K, C, M, Y.

1. Remove the Toner Cartridges Y, M, C, K, REP 5.1.8.

2. Remove the Imaging Units Y, M, C, K, REP 8.1.95.
3. Remove the Upper Dispenser Motor Assembly, REP 5.1.1.
4. Remove the Bypass Tray Frame Assembly, REP 13.2.1.
5. Refer to Figure 1 to locate and disconnect the CRUM Board connector on the bottom of
the Dispenser Assembly K.
6. Refer to Figure 1 to locate and remove the three screws (silver, tapping, 8 mm) that attach
the Dispenser Assembly K and pull the Dispenser Assembly K to the front while pressing
the lug on the left side inward with a screwdriver.

Figure 1 Remove the Dispenser Assembly Kit

7. Refer to Figure 2 to locate and remove the two screws (silver, tapping, 8 mm) that attach
the Frame Duct to the printer and remove the duct.
8. Refer to Figure 2 to locate and disengage the connectors connected to the Dispenser
Assemblies in the order of C, M, and Y. Remove the three screws (silver, tapping, 8 mm)
that attach each Dispenser Assembly, and pull the Dispenser Assemblies to the front in
the order of C, M, and Y while pressing the lug on the left side inward with a screwdriver.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 5.1.4 4-22 Xerox WorkCentre 6655 Color Multifunction Printer
 • Before securing the Dispenser Assemblies, make sure that the lug on the front and the
hook on the rear are correctly in place as shown in Figure 3.

NOTE: The rear hook placement can’t be seen when the Main Drive is not removed. Visu-
ally check that the hook is in the correct position by looking into the area behind where the
Imaging Units are installed. Verify the Dispenser alignment by test fitting each Imaging
Unit before securing the Dispenser in place.

Figure 3 Reinstalling the Dispenser Assemblies Y, M, C, and K

Figure 2 Remove Dispenser Assemblies C, M, and Y

Replacement
• The Dispenser Assemblies must be installed in Y, M, C, K order from top to bottom.
• Reconnect the CRUM connector harness for each Dispenser before fully seating the Dis-
penser in the frame.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-23 REP 5.1.4
REP 5.1.8 Toner Cartridges Y, M, C, K REP 6.1.5 Waste Box Lock
Parts List on PL 5.1 Item 8, PL 5.1 Item 9, PL 5.1 Item 10, PL 5.1 Item 11 Parts List on PL 6.1 Item 5
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Open the Right Side Door.
NOTE: Please observe the following about removing toner cartridges.
2. Referring to Figure 1, rotate the Waste Box Lock counterclockwise.
• Since the removal procedure is the same for all the toner cartridges, this procedure
describes removal of Toner Cartridge Y only. 3. Remove the screw (silver, 6 mm) that holds the Waste Box Lock on the shaft and remove
the handle.
• When removing a Toner Cartridge, be careful not to spill toner.

1. Open the Front Door Assembly.

2. Pull out the Toner Cartridge Y to the front by the handle as shown in Figure 1.

Figure 1 Remove the Waste Box Lock

Figure 1 Remove Toner Cartridge

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 5.1.8, REP 6.1.5 4-24 Xerox WorkCentre 6655 Color Multifunction Printer
REP 6.1.6 Left Transfer Belt Guide Assembly
Parts List on PL 6.1 Item 6
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Upper Transfer Belt Chute Assembly, REP 15.1.6.
2. Remove the Imaging Units Y, M, C, K, REP 8.1.95.
3. Release the CTD Spring from the Left Transfer Belt Guide Assembly.
4. Refer to Figure 1 to locate and remove the four screws (silver, 6 mm) that attach the Left
Transfer Belt Guide Assembly to the printer and remove the assembly.

Figure 1 Remove the Left Transfer Belt Guide Assembly

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-25 REP 6.1.6
REP 6.1.14 Color Toner Density (CTD) Sensor Assembly 5. Release the harness from the harness guide of the CTD Sensor Assembly.
6. Refer to Figure 2 to remove the shaft on the left side of the CTD Sensor Assembly from
Parts List on PL 6.1 Item 13, PL 6.1 Item 14 the CTD Spring.
Removal 7. Remove the springs from their remaining attachments.
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Upper Transfer Belt Chute Assembly, REP 15.1.6.

NOTE: When performing the following steps, use caution not to drop and lose the CTD Spring.

2. Refer to Figure 1 to locate and remove the right CTD Spring from the frame.

Figure 2 Remove the CTD Sensor Assembly

Replacement
Use the following replacement steps to re-install the CTD Sensor Assembly:
1. Insert the harness into the CTD Sensor Assembly harness guide, then plug the connector
Figure 1 Remove the CTD Springs onto the sensor assembly.
2. Referring to Figure 1, attach the left CTD Spring to the Left Transfer Belt Guide.
3. Referring to Figure 2, raise the right side of the CTD Sensor Assembly, pull the shaft on
3. Insert the shaft on the left side of the CTD Sensor Assembly through the spring and into
the left side out of the hole on the guide, and then raise the CTD Sensor Assembly.
the slot in the guide.
4. Unplug the connector from the CTD Sensor Assembly.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 6.1.14 4-26 Xerox WorkCentre 6655 Color Multifunction Printer
4. Referring to Figure 1, attach the right CTD Spring to the CTD Sensor. REP 6.1.97 Transfer Belt Assembly
5. Replace the Upper Transfer Belt Chute, REP 15.1.6.
Parts List on PL 6.1 Item 97
6. Referring to Figure 3, be sure to keep the right CTD Spring pointed up in a vertical posi-
tion when installing the Right CTD Guide. Removal
7. Hook the right CTD Spring onto the frame. WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.

NOTE: Make sure that the belt surface of the Transfer Belt Assembly is never touched.

1. Open the Front Door Assembly.

2. Open the Right Side Door.
3. Open the Rear Door Assembly.
4. Open the Top Cover Assembly.
5. Remove the Waste Box, REP 8.1.7.
6. Refer to Figure 1 to locate and lift the Transfer Belt Assembly by the handles on the left
and right sides, and then pull it out to the front.

Figure 3 Install the Right CTD Guide and Attach the Right CTD Spring

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-27 REP 6.1.14, REP 6.1.97
 NOTE: Keep the Transfer Belt Assembly on a flat workbench free of foreign substances. REP 6.1.98Transfer Belt Right Latch Kit
Parts List on PL 6.1 Item 98
Removal
NOTE: The Transfer Belt Right Latch Kit includes the Transfer Belt Right Latch Housing,
Transfer Belt Latch Spring, Transfer Belt Right Rear Spring, Transfer Belt Latch Plate, and
Transfer Belt Right Latch Arm.

WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Fuser Assembly, REP 7.1.1.
2. Remove the Waste Box, REP 8.1.7.
3. Remove the Transfer Belt Assembly, REP 6.1.97.
CAUTION
When performing the following step, use caution not to drop and lose the Transfer Belt Latch
Spring.
4. Refer to Figure 1 to locate and release the hook on the Transfer Belt Right Latch Arm,
and pull it off of the shaft while removing the Transfer Belt Latch Spring.
5. Remove the Transfer Belt Latch Plate from the shaft along with the Transfer Belt Right
Rear Spring.

Figure 1 Remove the Transfer Belt Assembly

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 6.1.97, REP 6.1.98 4-28 Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 2 Replace the Transfer Belt Right Rear Spring

Figure 1 Remove the Transfer Belt Latch Plate and Transfer Belt Right Rear Spring

Replacement
When installing the Transfer Belt Latch Plate with the Right Rear Spring, make sure that the
straight end of the spring is hooked on the frame as shown in Figure 2.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-29 REP 6.1.98
REP 6.1.99 Coupling Kit
Parts List on PL 6.1 Item 99
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Transfer Belt Assembly, REP 6.1.97.
2. Remove the Right Cover Assembly, REP 19.1.97.

NOTE: When performing the following step, use caution not to drop the Dowel Pin.

3. Refer to Figure 1 to locate and pull out the Dowel Pin.

4. Remove the Coupling Kit.

Figure 1 Remove the Coupling Kit

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 6.1.99 4-30 Xerox WorkCentre 6655 Color Multifunction Printer
REP 7.1.1 Fuser Assembly REP 8.1.1 Transfer CRUM Connector Assembly
Parts List on PL 7.1 Item 1 Parts List on PL 8.1 Item 1
Removal Removal
WARNING NOTE: Since the removal procedure is common among the four Transfer CRUM Connector
Switch off the electricity to the machine. Disconnect the power cord from the customer Assemblies, this section describes only the removal procedure of the Transfer CRUM Connec-
supply while performing tasks that do not need electricity. Electricity can cause death or tor Assembly connected to the Imaging Unit Y.
injury. Moving parts can cause injury.
WARNING
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
supply while performing tasks that do not need electricity. Electricity can cause death or
1. Open the Rear Door Assembly. injury. Moving parts can cause injury.
2. Refer to Figure 1 to locate and press up on the Fuser latch release at the lower-left to WARNING
unlock the Fuser Assembly, and pull it out to the rear by the handles on the left and right
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
sides.
1. Remove the Transfer Belt Assembly, REP 6.1.97.
2. Remove the Imaging Units Y, M, C, K, REP 8.1.95.
3. Open the Top Cover Assembly, REP 19.1.1.
4. Refer to Figure 1 to locate and remove the screw (silver, 6 mm) that attaches the Transfer
CRUM Connector Assembly.
5. Release the harness from the harness guide on the Transfer CRUM Connector Assembly,
unplug the connectors and remove the Transfer CRUM Connector Assembly.

Figure 1 Remove the Fuser Assembly

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-31 REP 7.1.1, REP 8.1.1
 REP 8.1.6 Cleaner Assembly
Parts List on PL 8.1 Item 6, PL 8.1 Item 9, PL 8.1 Item 10
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the Waste Box, REP 8.1.7.
2. Referring to Figure 1, pull out the Cleaner Assembly.
3. Release the hook holding the Cleaner Assembly Base and remove it.

Figure 1 Remove the Transfer CRUM Connector Assembly

Figure 1 Remove the Cleaner Assembly and Cleaner Assembly Base

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 8.1.1, REP 8.1.6 4-32 Xerox WorkCentre 6655 Color Multifunction Printer
REP 8.1.7 Waste Box Assembly REP 8.1.95 CRU Xerographic Development Assembly
Parts List on PL 8.1 Item 7 (Imaging Unit)
Removal Parts List on PL 8.1 Item 95, PL 8.1 Item 96, PL 8.1 Item 97, PL 8.1 Item
WARNING 98
Switch off the electricity to the machine. Disconnect the power cord from the customer Removal
supply while performing tasks that do not need electricity. Electricity can cause death or
NOTE: Since the removal procedure is common among the four Imaging Units, this section
injury. Moving parts can cause injury.
describes the removal procedure only for the Imaging Unit Y.
1. Open the Right Side Door.
2. Refer to Figure 1 to locate and rotate the Waste Box Lock counterclockwise. WARNING
3. Pull out the Waste Box toward you. Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Open the Right Side Door.
2. Remove the Waste Box Assembly, REP 8.1.7.
CAUTION
Imaging Units are sensitive to, and can be damaged by, exposure to light. Be sure to store the
Imaging Units in a dark location.
3. Refer to Figure 1 to remove each Imaging Unit by pressing down on the tab next to the
arrow and pulling straight out.

Figure 1 Remove the Waste Box Assembly

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-33 REP 8.1.7, REP 8.1.95
 REP 9.1.1 IOT 550 Cassette Assembly
Parts List on PL 9.1 Item 1
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Refer to Figure 1 to remove the 550 Cassette Assembly from the printer.

Figure 1 Remove the CRU Xerographic Development Assemblies

Figure 1 Remove the IOT 550 Cassette Assembly

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 8.1.95, REP 9.1.1 4-34 Xerox WorkCentre 6655 Color Multifunction Printer
REP 9.1.96 Feed Roller Assembly REP 9.1.97 Cassette Retard Holder Assembly
Parts List on PL 9.1 Item 96 Parts List on PL 9.1 Item 97
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove the 550 Cassette Assembly from the printer. 1. Remove the 550 Cassette Assembly from the printer.
2. Remove the Cassette Retard Holder Assembly, REP 9.1.97. 2. Refer to Figure 1 to locate and release the hook from the end of the Cassette Retard
3. Refer to Figure 1 to locate and release the hook holding the Cassette Retard Shaft and Holder.
remove the shaft together with the Feed Roller Assembly by pulling it out sideways. 3. Lift the Cassette Retard Holder Assembly, and slide sideways to remove the assembly.
4. Release the hook that holds the Feed Roller Assembly and slide the roller off the shaft.

Figure 1 Remove the Feed Roller Assembly

Figure 1 Remove the Cassette Retard Holder Assembly

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-35 REP 9.1.96, REP 9.1.97
REP 10.1.1 Optional 550-Sheet Feeder
Parts List on PL 10.1 Item 1, PL 10.1 Item 17
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the 550 Cassette Assembly from the printer.
2. Refer to Figure 1 to locate and remove the two Joint Screws that attach the Optional 550-
Sheet Feeder to the printer.
WARNING
Do not attempt to remove or lift the following component with less than 2 people. The
component is very heavy and requires at least 2 people to lift or remove it. Any attempt
to remove or lift the component with less than 2 people could result in serious personal
injury.
3. Raise the printer while holding the recessed areas on both sides, and separate it from the
Optional 550-Sheet Feeder.

Figure 1 Remove the Optional 550-Sheet Feeder

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 10.1.1 4-36 Xerox WorkCentre 6655 Color Multifunction Printer
REP 10.1.2 550 Option Left-Side Cover and Frame REP 10.1.6 550 Option Cassette Stopper
Parts List on PL 10.1 Item 2, PL 10.1 Item 21 Parts List on PL 10.1 Item 6
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove the 550 Cassette Assembly from the Optional 550-Sheet Feeder.
NOTE: When installing or removing this part, you do not need to separate the printer from the
Optional 550-Sheet Feeder. 2. Remove the Optional 550-Sheet Feeder from the printer, REP 10.1.1.
3. Turn the Optional 550-Sheet Feeder over onto its top.
1. Remove the 550 Option Cassette Assembly from the 550 Option Feeder.
4. Refer to Figure 1 to locate and remove the screw (silver, tapping, 8 mm) that attaches the
2. Refer to Figure 1 to locate and remove the screw (silver, tapping, 8 mm) that attaches the
Cassette Stopper to the feeder and remove the stopper.
550 Option Left-Side Cover to the feeder.
3. Remove the 550 Option Left-Side Cover by releasing the two bosses on its rear and then
the two bosses on its front while flexing its rear end outward.
4. Remove the Option 550 Left Side Frame by releasing the hook, and removing the two
screws (silver, tapping, 8 mm) attaching the frame to the printer.

Figure 1 Remove the 550 Option Left-Side Cover and Frame

Figure 1 Remove the Option Cassette Stopper

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-37 REP 10.1.2, REP 10.1.6
REP 10.1.8 550 Option Feed Clutch Assembly Replacement
Parts List on PL 10.1 Item 8 When installing the 550 Option Feed Clutch Assembly, align the recess on the 550 Option
Feed Clutch Assembly with the lug on the frame.
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the 550 Option Drive Assembly, REP 10.1.9.
2. Refer to Figure 1 to locate and unplug connector P/J4213 on the harness coming out of
the 550 Option Feed Clutch Assembly, and then release the harness from the harness
guide.
3. Remove the E-ring holding the 550 Option Feed Clutch Assembly, and then pull the 550
Option Feed Clutch Assembly off of the shaft.

Figure 1 Remove the 550 Option Feed Clutch Assembly

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 10.1.8 4-38 Xerox WorkCentre 6655 Color Multifunction Printer
REP 10.1.9 550 Option Drive Assembly REP 10.1.10 550 Option Feeder Board
Parts List on PL 10.1 Item 9 Parts List on PL 10.1 Item 10
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.

NOTE: When installing or removing this part, you do not need to separate the printer from the NOTE: When installing or removing this part, you do not need to separate the printer from the
Optional 550-Sheet Feeder. Optional 550-Sheet Feeder.

1. Remove the 550 Option Cassette Assembly from the Optional 550-Sheet Feeder. 1. Remove the 550 Option Cassette Assembly from the Optional 550-Sheet Feeder.
2. Remove the 550 Option Left-Side Cover and Frame, REP 10.1.2. 2. Remove the 550 Option Left-Side Cover and Frame, REP 10.1.2.
3. Refer to Figure 1 to locate and unplug connector P/J4221 from the 550 Option Drive 3. Refer to Figure 1 to locate and disengage all connectors on the 550 Option Feeder Board.
Assembly. 4. Remove the clamp secured on the frame by sliding it to the left.
4. Remove the four screws (silver, tapping, 8 mm) that attach the 550 Option Drive Assem- 5. Refer to Figure 1 to locate and remove the three screws (silver, tapping, 8 mm) that attach
bly to the feeder and remove the drive assembly. the 550 Option Feeder Board to the feeder and remove the board.

Figure 1 Remove the 550 Option Drive Assembly

Figure 1 Remove the 550 Option Feeder Board

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-39 REP 10.1.9, REP 10.1.10
REP 10.1.11 550 Option Size Switch Assembly REP 10.1.13 550 Option Drawer1 Feeder Harness
Parts List on PL 10.1 Item 11 Assembly
Removal Parts List on PL 10.1 Item 13
WARNING Removal
Switch off the electricity to the machine. Disconnect the power cord from the customer WARNING
supply while performing tasks that do not need electricity. Electricity can cause death or Switch off the electricity to the machine. Disconnect the power cord from the customer
injury. Moving parts can cause injury.
supply while performing tasks that do not need electricity. Electricity can cause death or
NOTE: When installing or removing this part, you do not need to separate the printer from the injury. Moving parts can cause injury.
Optional 550-Sheet Feeder. 1. Separate the 550 Option Feeder from the printer, REP 10.1.1.
2. Remove the 550 Option Left-Side Cover and Frame, REP 10.1.2.
1. Remove the 550 Option Left-Side Cover and Frame, REP 10.1.2.
3. Refer to Figure 1 to locate and unplug the Feeder Harness connector P/J419 from the
2. Refer to Figure 1 to locate and unplug connector P/J4211 from the 550 Size Switch
Option Feeder Board.
Assembly.
4. Release the harness from the harness guide.
3. Refer to Figure 1 to locate and remove the screw (silver, tapping, 8 mm) that attaches the
550 Size Switch Assembly to the feeder and remove the switch assembly. 5. Refer to Figure 1 to locate and release the two latches attaching the feeder to the printer
frame, and remove the feeder with its harness.

Figure 1 Remove the 550 Size Switch Assembly

Figure 1 Remove the 550 Option Feeder Harness Assembly

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 10.1.11, REP 10.1.13 4-40 Xerox WorkCentre 6655 Color Multifunction Printer
REP 10.2.1 550 Option Main Feed Assembly
Parts List on PL 10.2 Item 1
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the Optional 550-Sheet Feeder from the printer, REP 10.1.1.
2. Remove the 550 Option Feed Clutch Assembly, REP 10.1.8.
3. Refer to Figure 1 to locate and unplug connectors P/J4201, P/J4202, and P/J4214 on the
harness coming from the 550 Option Main Feed Assembly, and then release the harness
from the harness guide.
4. Refer to Figure 1 to locate and remove the two screws (silver, tapping, 8 mm) that attach
the 550 Option Main Feed Assembly and remove the 550 Option Main Feed Assembly
while pulling the harness out of the hole on the frame.

Figure 1 Remove the 550 Option Main Feed Assembly

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-41 REP 10.2.1
REP 10.2.2 550 Option Registration Clutch Assembly Replacement
Parts List on PL 10.2 Item 2 When installing the 550 Option Registration Clutch Assembly, align the recess on the clutch
assembly with the lug on the frame.
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the Optional 550-Sheet Feeder from the printer, REP 10.1.1.
2. Remove the 550 Option Main Feed Assembly, REP 10.2.1.
3. Pull out the 550 Option Feeder Gear together with the shaft.
4. Refer to Figure 1 to locate and remove the screw (silver, tapping, 8 mm) that attaches the
Nudger 2 Spring Bracket to the printer and remove the bracket.
5. Release the harness coming out of the 550 Option Registration Clutch Assembly from the
harness guide.
6. Refer to Figure 1 to locate and remove the E-ring holding the 550 Option Registration
Clutch Assembly, and then pull the clutch assembly off of the shaft.

Figure 1 Remove the 550 Option Registration Clutch Assembly

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 10.2.2 4-42 Xerox WorkCentre 6655 Color Multifunction Printer
REP 10.2.3 550 Option Feed Roller Assembly REP 13.1.98 Bypass TA1 Roller Assembly
Parts List on PL 10.2 Item 3 Parts List on PL 13.1 Item 98
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove the 550 Option Cassette Assembly from the Optional 550-Sheet Feeder. 1. Remove the Bypass Tray Frame Assembly, REP 13.2.1.
2. Remove the Optional 550-Sheet Feeder from the printer, REP 10.1.1. 2. Remove Main Drive Assembly, REP 3.1.1.
3. Refer to Figure 1 to locate and release the hook holding the Feed Roller Assembly, and 3. Release the hook holding the Turn Gear and remove the gear.
slide the assembly off the shaft. 4. Refer to Figure 1 to locate and unlock the TA Bearing and remove it by rotating it.
5. Unlock the Duplex Bearing, rotate it, and then slide it onto the shaft.
6. Slide the TA1 Roller Assembly to the left and remove it from the end of the right shaft.

Figure 1 Remove the 550 Option Feed Roller Assembly

Figure 1 Remove the TA1 Roller Assembly

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-43 REP 10.2.3, REP 13.1.98
REP 13.1.99 Bypass TA2 Roller Assembly REP 13.2.1 Bypass Tray Frame Assembly
Parts List on PL 13.1 Item 99 Parts List on PL 13.2 Item 1
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove the Laser Unit Assembly, REP 2.1.1. 1. Remove the Bypass Tray Assembly, REP 13.3.1.
2. Remove Main Drive Assembly, REP 3.1.1. 2. Refer to Figure 1 to locate and remove the front three screws (silver, 6 mm) from the Main
3. Release the hook holding the Turn Gear and remove the gear. Drive Assembly (REP 3.1.1), so that the front of the assembly can be flexed away from
the frame about ¼ inch.
4. Refer to Figure 1 to locate and unlock the TA Bearing and remove it by rotating it.
5. Unlock the Duplex Bearing, rotate it, and then slide it onto the shaft.
6. Slide the TA2 Roller Assembly to the left and remove it from the end of the right shaft.

Figure 1 Remove the TA2 Roller Assembly

Figure 1 Remove Indicated Screws from the Main Drive Assembly

3. Refer to Figure 2 to locate and unplug connector P/J21 from the MCU Board, and release
the harness from the clamps.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 13.1.99, REP 13.2.1 4-44 Xerox WorkCentre 6655 Color Multifunction Printer
4. Remove the two screws (silver, 6 mm) (silver, tapping, 8 mm) that attach the Bypass Tray REP 13.2.4a Bypass Tray No Paper Sensor
Frame Assembly.
5. Flex the front of Main Drive Assembly away from the frame about ¼ inch, then remove the
Parts List on PL 13.2 Item 4
Bypass Tray Frame Assembly while guiding the harness through the hole in the chassis. Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the Bypass Tray Frame Assembly, REP 13.2.1.
2. Refer to Figure 1 to locate and unplug connector P/J212 of the Bypass Tray No Paper
Sensor (Interlock Photo Sensor).
3. Release the hook holding the Bypass Tray No Paper Bracket and remove the Bypass
Tray No Paper Bracket together with the Bypass Tray No Paper Sensor.
4. Release the hook holding the Bypass Tray No Paper Sensor and remove it.

Figure 2 Remove the Bypass Tray Frame Assembly

Figure 1 Remove the Bypass Tray No Paper Sensor

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-45 REP 13.2.1, REP 13.2.4a
REP 13.2.4b Bypass Tray Sensor REP 13.2.10 Bypass Tray Feed Roller Assembly
Parts List on PL 13.2 Item 4 Parts List on PL 13.2 Item 10
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove the Bypass Tray Frame Assembly, REP 13.2.1. 1. Remove the 550-sheet Paper Tray.
2. Refer to Figure 1 to locate and remove the screw (silver, tapping, 8 mm) that attaches the 2. Remove the Bypass Tray Assembly, REP 13.3.1.
Bypass Tray Harness Guide and remove the Bypass Tray Harness Guide together with 3. Rotate the top of the Feed Roller into position for access to the release tab as shown in
the Bypass Tray Sensor (Interlock Photo Sensor). Figure 1.
3. Unplug connector P/J211 of the Bypass Tray Sensor. 4. Refer to Figure 1 to locate and release the tab holding the Feed Roller Assembly and
4. Release the hook holding the Bypass Tray Sensor and remove the sensor. remove the Feed Roller Assembly by sliding it to the right.

Figure 1 Remove the Bypass Tray Sensor Figure 1 Remove the Feed Roller Assembly

Replacement
Rotate shaft into the position shown in Figure 1 then replace the roller by sliding it on from the
front.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 13.2.4b, REP 13.2.10 4-46 Xerox WorkCentre 6655 Color Multifunction Printer
REP 13.2.98 Bypass Tray Feed Roller Assembly Kit
Parts List on PL 13.2 Item 98
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the Bypass Tray Frame Assembly, REP 13.2.1.
2. Refer to Figure 1 to locate and remove the Feed Spring.
3. Release the hook holding the Bypass Tray Feed Gear and remove the gear from the
Bypass Tray Feed Shaft.
4. Release the hook holding the Left Bypass Tray Cam, and slide the cam to the right.
5. Slide the Roller Assembly to the left to release the shaft’s right end; then, to free the left
end, swing the right end of the shaft toward the front while shifting the shaft to the right.

Figure 2 Align the Solenoid Actuator with the Bypass Feed Shaft

Figure 1 Remove the Bypass Tray Feed Roller Assembly

Replacement
Make sure that the solenoid actuator is aligned with the shaft when reinstalling the Bypass Tray
Feed Roller Assembly as shown in Figure 2.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-47 REP 13.2.98
REP 13.2.99 Bypass Tray Feed Solenoid Assembly REP 13.3.1 Bypass Tray Assembly
Parts List on PL 13.2 Item 99 Parts List on PL 13.3 Item 1
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove the Bypass Tray Frame Assembly, REP 13.2.1. 1. Refer to Figure 1 to remove the 550-sheet Paper Tray from the printer.
2. Refer to Figure 1 to locate and remove the Feed Spring. 2. Pull the Bypass Tray Assembly out toward you.
3. Release the hook holding the Bypass Tray Feed Gear and remove the gear from the
Bypass Tray Feed Shaft.
4. Unplug connector P/J214 on the harness coming from the Bypass Tray Feed Solenoid.
5. Remove the screw (silver, tapping, 8 mm) that attaches the Bypass Tray Harness Guide,
and then move the Bypass Tray Harness Guide sideways together with Bypass Tray Sen-
sor.
6. Remove the screw (silver, tapping, 8 mm) that attaches the Bypass Tray Feed Solenoid to
the printer and remove the solenoid.

Figure 1 Remove the Bypass Tray Assembly

Figure 1 Remove the Bypass Tray Feed Gear and Bypass Tray Feed Solenoid

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 13.2.99, REP 13.3.1 4-48 Xerox WorkCentre 6655 Color Multifunction Printer
REP 13.3.2 Bypass Tray Cover Assembly
Parts List on PL 13.3 Item 2
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the Bypass Tray Assembly, REP 13.3.1.
2. Refer to Figure 1 to open the Bypass Tray Cover Assembly.
3. Remove the paper guide from the cover by flexing the paper guide to release the bosses
from the holes in both the cover and the tray assembly, and by releasing the Damper
Spring.
4. Remove the Bypass Tray Cover Assembly by flexing it to release the bosses from the
holes.

Figure 2 Replace the Damper Spring Correctly

Figure 1 Remove the Bypass Tray Cover Assembly

Replacement
Check that the Damper Spring is correctly in place as shown in Figure 2.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-49 REP 13.3.2
REP 13.3.4 Bypass Tray Lower Cover REP 13.3.5 Bypass Tray Chute Assembly
Parts List on PL 13.3 Item 4 Parts List on PL 13.3 Item 5
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove the 550 Cassette Assembly from the printer, REP 9.1.1. 1. Remove the Bypass Tray Assembly, REP 13.3.1.
2. Refer to Figure 1 to locate and release the two hooks holding the Bypass Tray Lower 2. Remove the Bypass Tray Cover Assembly, REP 13.3.2.
Cover and remove the cover. If the two hooks are difficult to release, remove the Bypass 3. Remove the Bypass Tray Lower Cover, REP 13.3.4.
Tray Assembly first (REP 13.3.1), then remove the lower cover.
NOTE: Figure 1 shows the Bypass Tray Chute Assembly as it appears after the covers
are removed.

Figure 1 The Bypass Tray Chute Assembly Without Covers

Figure 1 Remove the Bypass Tray Lower Cover

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 13.3.4, REP 13.3.5 4-50 Xerox WorkCentre 6655 Color Multifunction Printer
REP 13.3.98 Bypass Tray Separator Roller Assembly
Parts List on PL 13.3 Item 98
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.

NOTE: Refer to Figure 1 to replace only the Bypass Tray Retard Roller. Remove only the roller
from the plate by releasing the roller ends from the holder.

Figure 1 Replacing only the Bypass Tray Retard Roller

1. Remove the Bypass Tray Assembly, REP 13.3.1.

2. Refer to Figure 2 to locate and remove the Bypass Tray Retard Spring through the access
hole on the underside of the tray. Figure 2 Remove the Retard Holder Assembly
3. Release the ends of the Bypass Tray Retard Plate Assembly from the bosses, and move
the plate as far forward as possible.
4. Slide the Retard Holder Assembly to the left and remove it upward by releasing the right
shaft first.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-51 REP 13.3.98
REP 13.3.99 Bypass Tray Pinch Roller Assembly Replacement
Parts List on PL 13.3 Item 99 The TA1 and TA2 Pinch Springs are not the same. Carefully note the difference in the springs
when removing, and use caution not to confuse the springs when reinstalling.
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the Bypass Tray Assembly, REP 13.3.1.
2. Turn over the Bypass Tray Assembly.
3. Refer to Figure 1 to locate and remove the pinch spring from the roller being removed.
4. Remove the Bypass Tray Pinch Roller.

Figure 1 Remove the Bypass Tray Pinch Roller

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 13.3.99 4-52 Xerox WorkCentre 6655 Color Multifunction Printer
REP 14.1.1 Duplex Assembly
Parts List on PL 14.1 Item 1
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.

NOTE: In the following steps, after disconnecting the power supply (pink wire) from the Duplex
Assembly to remove the Rear Door Assembly, reconnect the wire to the Duplex Assembly in
the final step.

1. Remove the Rear Door Assembly, REP 19.2.98.

CAUTION
In the following step, to prevent the door from falling off as you remove the screws, support the
door from underneath
2. Refer to Figure 1 to locate and remove the four screws (silver, tapping, 8 mm) that attach
the Duplex Assembly to the Rear Cover and remove the assembly.

Figure 1 Remove the Duplex Assembly

3. Remove the Rear Frame, REP 4.1.6.

4. Disconnect the power supply harness (pink wire) from the Transfer HVPS Board.
5. Re-attach the power supply harness to the Duplex Assembly.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-53 REP 14.1.1
REP 14.1.4 Rear Hinge Bracket REP 14.1.99 CRU Transfer Roller Assembly
Parts List on PL 14.1 Item 4 Parts List on PL 14.1 Item 99
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
WARNING 1. Open the Rear Door Assembly.
The Fuser is very hot. Take added care when handling the fuser to avoid being burned. 2. Refer to Figure 1 to remove the Transfer Roller upward while squeezing the tabs holding
it.
1. Remove the Rear Cover Assembly, REP 19.2.98.
2. Remove the Left Cover Assembly, REP 19.2.99.
3. Remove the IP Box, REP 18.2.8.
4. Refer to Figure 1 to locate and remove the two screws (silver, tapping, 8 mm) that attach
the Rear Hinge Bracket, and remove the Rear Hinge Bracket.

Figure 1 Remove the Transfer Roller

Figure 1 Remove the Rear Hinge Bracket

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 14.1.4, REP 14.1.99 4-54 Xerox WorkCentre 6655 Color Multifunction Printer
REP 15.1.4 Lower and Opt 550 Registration Chutes
Parts List on PL 15.1 Item 4, PL 15.1 Item 5
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the 550 Cassette Assembly.
2. Refer to Figure 1 to remove the Opt 550 Registration Chute by releasing the two bosses
and by sliding the Opt 550 Registration Chute downward to release the hook.

Figure 1 Remove the Opt 550 Registration Chute

Replacement
When replacing the Opt 550 Registration Chute, move the left end into place first, then swing
the right end into position. Next, align the mounting tabs with the holes in the frame, and snap
into place as shown in Figure 2.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-55 REP 15.1.4
 REP 15.1.6 Upper Transfer Belt Chute Assembly
Parts List on PL 15.1 Item 6
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Fuser Assembly, REP 7.1.1.
2. Remove the Transfer Belt Assembly, REP 6.1.97.
3. Refer to Figure 1 to locate and remove the screw (silver, tapping, 8 mm) that attaches the
Right CTD Guide to the printer and remove the guide.
4. Raise the right end of the Upper Transfer Belt Chute Assembly, release the hook on the
left from the hole and remove the Upper Transfer Belt Chute Assembly.

Figure 2 Replacing the Opt 550 Registration Chute

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 15.1.4, REP 15.1.6 4-56 Xerox WorkCentre 6655 Color Multifunction Printer
 REP 15.1.8 Registration Clutch Assembly
Parts List on PL 15.1 Item 8
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Fuser, REP 7.1.1.
2. Remove the Main Drive Assembly, REP 3.1.1.
3. Remove the Rear Cover Assembly, REP 19.2.98.
4. Remove the S3 Rear Frame, REP 4.1.6.
5. Refer to Figure 1 to locate and unplug connector P/J234 on the harness coming from the
Registration Clutch Assembly, and release the harness from the harness guide.
6. Remove the E-ring holding the Registration Clutch Assembly, and pull the assembly off
the shaft.

Figure 1 Remove the Upper Transfer Belt Chute Assembly

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-57 REP 15.1.6, REP 15.1.8
 REP 15.1.10 Cassette Stopper
Parts List on PL 15.1 Item 10
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Lower and Opt 550 Registration Chutes, REP 15.1.4.
2. Refer to Figure 1 to locate and remove the screw (silver, tapping, 8 mm) that attaches the
Cassette Stopper to the printer and remove the stopper.

Figure 1 Remove the Registration Clutch Assembly

Replacement
CAUTION
When replacing the Registration Clutch onto the shaft, observe the following to avoid damag-
ing the clutch and its harness:
• Position the clutch alignment slot over the tab on the Registration Clutch Assembly.
• Carefully route the harness through the harness guide.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 15.1.8, REP 15.1.10 4-58 Xerox WorkCentre 6655 Color Multifunction Printer
 REP 15.1.98 Duplex Chute Assembly
Parts List on PL 15.1 Item 98
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Fuser Assembly, REP 7.1.1.
2. Remove the Rear Cover Assembly, REP 19.2.98.
3. Remove the S3 Rear Frame, REP 4.1.6.
CAUTION
In the following step, avoid damaging the Mylar edge strip when removing the Duplex Chute
Assembly.
4. Refer to Figure 1 to locate and release the screw (silver, tapping, 8 mm) that attaches the
Duplex Chute Assembly. Release the two hooks and remove the Duplex Chute Assembly.
(Note: the Duplex Chute Assembly comprises the Upper and Lower Duplex Chutes which
are attached together.)

Figure 1 Remove the Cassette Stopper

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-59 REP 15.1.10, REP 15.1.98
 REP 15.1.99 Registration Chute Assembly Kit
Parts List on PL 15.1 Item 99
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the 550 Cassette Assembly from the printer.
2. Remove the Duplex Chute Assembly, REP 15.1.98.
3. Remove the Lower and Opt 550 Registration Chutes, REP 15.1.4.
4. Remove the Registration Chute Assembly, REP 15.2.1.

Figure 1 Remove the Upper Duplex Chute with the Duplex Registration Chute

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 15.1.98, REP 15.1.99 4-60 Xerox WorkCentre 6655 Color Multifunction Printer
REP 15.2.1 Registration Chute Assembly
Parts List on PL 15.2 Item 1
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the 550 Cassette Assembly.
2. Remove the Fuser Assembly, REP 7.1.1.
3. Remove Rear Cover Assembly, REP 19.2.98.
4. Remove Rear Frame, REP 4.1.6.
5. Remove the CTD Sensor Assembly, REP 6.1.14.
6. Remove Registration Clutch Assy (left side) but do not disconnect, REP 15.1.8.
7. Refer to Figure 1 to remove the Inner Transfer Wire Housing Assembly by removing the
screw (silver, 6 mm) near the bottom, and by releasing the two hooks on the sides.
8. Release the harness from the PH Harness Guide.
9. Refer to Figure 1 to locate and remove the PH Harness Guide by removing the screw (sil-
ver, 6 mm) that attaches the PH Harness Guide and by releasing the two hooks.

Figure 1 Remove the PH Harness Guide and the Rear Hinge Bracket

10. Remove the Waste Drive Shaft Bearing and Gear to loosen shaft, REP 3.1.8.
11. Remove the Duplex Chute Assembly, REP 15.1.98.
12. Remove the Lower and Opt 550 Registration Chutes, REP 15.1.4.
13. Refer to Figure 2 to locate and unplug connectors P/J13, P/J23, and P/J39 from the MCU
Board, and release the harness from the clamp.
14. Pull the harness out of the hole on the frame.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-61 REP 15.2.1
 Figure 2 Unplug Connectors from the MCU Board and Remove the Harness

15. Refer to Figure 3 to locate and remove the four screws (silver, tapping, 8 mm) that attach
the Registration Chute Assembly.
Figure 3 Remove the Registration Chute Assembly
16. Remove the Registration Chute Assembly by releasing its right lug from the recess while
moving the shaft end of the Registration Clutch Assembly along the recess on the left
frame of the printer.
Replacement
When installing the Inner Transfer Wire Housing Assembly, check that the ends of the four
springs fit correctly into the holes as shown in Figure 4.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 15.2.1 4-62 Xerox WorkCentre 6655 Color Multifunction Printer
 REP 15.2.2 Right / Left Registration Bearings
Parts List on PL 15.2 Item 2
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Registration Chute Assembly, REP 15.2.1.
2. Refer to Figure 1 to remove the Right and Left Registration Bearings by unlocking and
rotating each one, then removing them.

Figure 4 Replace the Inner Transfer Wire Housing Assembly

Figure 1 Remove the Registration Bearings

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-63 REP 15.2.1, REP 15.2.2
REP 15.2.5 Duplex Clutch Assembly REP 15.2.6 550 Option Feed Clutch Assembly
Parts List on PL 15.2 Item 5 Parts List on PL 15.2 Item 6
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
WARNING WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned. The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Registration Chute Assembly, REP 15.2.1. 1. Remove the Registration Chute Assembly, REP 15.2.1.
2. Remove the Right Registration Bearing, REP 15.2.2. 2. Refer to Figure 1 to locate and unplug connector P/J392 on the harness coming from the
3. Release the harness from the harness guide of the Duplex Gear Cover. Feed Clutch Assembly, and release the harness from the harness guide.
4. Refer to Figure 1 to locate and remove the three screws (silver, tapping, 8 mm) that attach 3. Remove the E-ring holding the Feed Clutch Assembly, and then pull the clutch off of the
the Duplex Gear Cover to the Registration Chute Assembly and remove the cover. shaft.
CAUTION
The gears and shafts of the Duplex Clutch Assembly easily fall off of the assembly. Use care
when removing to avoid losing or damaging any of the parts.
5. Remove the Duplex Clutch Assembly from the shaft.

Figure 1 Remove the Duplex Clutch Assembly Figure 1 Remove the Feed Clutch Assembly

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 15.2.5, REP 15.2.6 4-64 Xerox WorkCentre 6655 Color Multifunction Printer
REP 15.2.7 Feed Roller Assembly REP 15.2.10 No Paper Actuator
Parts List on PL 15.2 Item 7 Parts List on PL 15.2 Item 10
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove the 550 Cassette Assembly from the printer. 1. Remove the Registration Chute Assembly, REP 15.2.1.
2. Remove the Bypass Tray Assembly, REP 13.3.1. 2. Remove the Right / Left Registration Bearings, REP 15.2.2.
3. Refer to Figure 1 to locate and release the latch that holds the Feed Roller Assembly on 3. Refer to Figure 1 to locate and remove the E-ring, and then remove the Rubber Roller
the shaft, and slide the roller to the right off the shaft. Assembly together with the Center Registration Bearing in the direction of the arrow.

Figure 1 Remove the Rubber Roller Assembly

4. Refer to Figure 2 to locate and turn the No Paper Actuator, and remove the actuator
together with the Registration Actuator Spring in the direction of the arrow.

Figure 1 Remove the Feed Roller Assembly

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-65 REP 15.2.7, REP 15.2.10
 REP 17.1.1 Exit Assembly
Parts List on PL 17.1 Item 1
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Fuser, REP 7.1.1.
2. Remove the Scanner Assembly, REP 51.1.14.
3. Remove the Top Exit Cover, REP 19.2.4.
4. Refer to Figure 1 to locate and remove the two screws (silver, 6 mm) that attach the Exit
Assembly to the printer and remove the Exit Assembly. Do not remove the two screws cir-
cled in the detail boxes.
5. Unplug connectors P/J151 and P/J154 of the Exit Assembly.
6. Remove the two screws (silver, tapping, 8 mm) that attach the Exit Tray Cover to the Exit
Figure 2 Remove the No Paper Actuator Assembly and remove the cover.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 15.2.10, REP 17.1.1 4-66 Xerox WorkCentre 6655 Color Multifunction Printer
 REP 17.1.10 Stack Full Actuator
Parts List on PL 17.1 Item 10
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Scanner Assembly, REP 51.1.14.
2. Remove the Top Exit Cover, REP 19.2.4.
3. Refer to Figure 1 to remove the Stack Full Actuator by swinging it 90deg upward and
releasing the left end; then, release the right end from the hole.

Figure 1 Remove the Exit Assembly

Figure 1 Remove the Stack Full Actuator

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-67 REP 17.1.1, REP 17.1.10
REP 17.1.21 Exit Drive Assembly
Parts List on PL 17.1 Item 21
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Main Drive Assembly, REP 3.1.1.
2. Remove the Exit Assembly, REP 17.1.1.
3. Refer to Figure 1 to locate and unplug connectors P/J38 and P/J40 connected to the MCU
Board, and release the harness from the clamp and the harness guide.
4. Unplug the harness from the interim connector on top of the Exit Drive Assembly.
5. Refer to Figure 1 to locate and remove the screw (silver, tapping, 8 mm) that attaches the
Exit Drive Assembly.
6. Release the two latches holding the Exit Drive Assembly and remove the assembly.

Figure 1 Unplug the Exit Drive Assembly Connectors from the MCU Board and Remove
the Exit Drive Assembly

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 17.1.21 4-68 Xerox WorkCentre 6655 Color Multifunction Printer
REP 18.1.11 MCU Board
Parts List on PL 18.1 Item 11
Removal
1. Save NVM parameters; see “NVM Save and Restore” (dC361).
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
2. Remove the Left Cover Assembly, REP 19.2.99.
3. Remove two screws (silver, 6 mm) from the vertical metal strap attached to the chassis
located over the MCU Board and the HVPS Development Board.

NOTE: Before unplugging connectors on the MCU Board, release harnesses from the clamps.

4. Refer to Figure 1 to locate and unplug all connectors from the MCU Board.
5. Remove the four screws (silver, 6 mm) that attach the MCU Board to the printer and
remove the board.
6. After replacing the board, restore previously saved NVM parameters; see “NVM Save and
Restore” (dC361).

Figure 1 Remove the MCU Board

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-69 REP 18.1.11
REP 18.1.12 Development HVPS Board REP 18.1.16 Transfer HVPS Board
Parts List on PL 18.1 Item 12 Parts List on PL 18.1 Item 16
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove the Front Door Assembly, REP 19.1.20. WARNING
2. Remove the Left Cover Assembly, REP 19.2.99. The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
3. Remove two screws (silver, 6 mm) from the vertical metal strap attached to the chassis 1. Remove the Front Door Assembly, REP 19.1.20.
located over the MCU Board and the Development HVPS Board.
2. Remove the Right Cover Assembly, REP 19.1.97.
4. Refer to Figure 1 to locate and remove the five screws (three silver, tapping, 8 mm) (two
3. Remove the Left Cover Assembly, REP 19.2.99.
silver, 6 mm) that attach the Development HVPS Board and remove the Development
4. Remove the IP Box, REP 18.2.6.
HVPS Board after releasing the four hooks.
5. Remove the S3 Rear Frame, REP 4.1.6.
5. Unplug connectors P/J181 and P/J182 from the HVPS Board and remove the board.
6. Refer to Figure 1 to locate and remove the three screws (one silver, tapping, 8 mm; two,
silver, 6 mm) that attach the Transfer HVPS Board.
7. Release the two hooks that attach the Transfer HVPS Board, and move the board away
from the frame enough to access the connectors.
CAUTION
The harnesses connected to the Transfer HVPS Board have little slack. Pull carefully on the
board to avoid damage to the connectors or wires.

NOTE: Release the harness from the guide to allow enough slack to unplug the connector.

8. Refer to Figure 1 to locate and unplug P/J1821 and the Faston connector from the Trans-
fer HVPS Board and remove the board.

Figure 1 Remove the HVPS Board

Replacement
When installing the HVPS Board, check that the six springs correctly connect to the board.
Figure 1 Unplug the Connectors to the Transfer HVPS Board and Remove the Board

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 18.1.12, REP 18.1.16 4-70 Xerox WorkCentre 6655 Color Multifunction Printer
REP 18.1.19 Drawer 1 Feeder REP 18.1.22 Front Door Interlock Photo Sensor
Parts List on PL 18.1 Item 19 Parts List on PL 18.1 Item 22
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove the Left Cover Assembly, REP 19.2.99.
NOTE: When doing the following step, it is not necessary to remove the board completely for
2. Remove the Development HVPS Board, REP 18.1.12. access to the MCU Plate. It is necessary only to unplug the connector from the MCU Board to
3. Refer to Figure 1 to locate and release the two latches on the Drawer 1 Feeder attaching the HVPS Board, and P/J14. Swing the board out of the way to the left.
the feeder to the printer frame, and remove the feeder.
1. Remove MCU Board, REP 18.1.11.
4. Disconnect the harness from the feeder connector DP/DJ271.
2. Refer to Figure 1 to locate and unplug connector P/J145 of the Front Door Interlock Photo
Sensor.

Figure 1 Remove the Front Door Interlock Photo Sensor

Figure 1 Remove the Drawer 1 Feeder
3. Refer to Figure 2 to locate and remove three screws (silver, tapping, 8 mm) and two
screws (silver, 6 mm) that attach the MCU Plate to the printer and swing the front of the
plate out to expose the photo sensor.
4. Release the latches securing the sensor to the MCU Plate, and remove the sensor.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-71 REP 18.1.19, REP 18.1.22
 REP 18.1.23 Transfer HVPS Harness
Parts List on PL 18.1 Item 23
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Open the Rear Cover.
2. Remove the Transfer Roller, REP 14.1.99.

NOTE: In the following step, to gain access to the screw attaching the wire to the Duplexer,
squeeze the Duplexer together and lock in place with a small screwdriver as shown in Figure 1.

3. Refer to Figure 1 to locate and remove the screw (silver, tapping, 8 mm) that attaches the
power supply (pink wire) to the Duplex Assembly, and release the wire from the harness
guide.
4. Remove the S3 Rear Frame, REP 4.1.6.
5. Disconnect the Transfer HVPS Harness from the Transfer HVPS Board and remove the
harness.

Figure 2 Detach the MCU Plate from the Printer and Remove the Sensor

Figure 1 Remove the Transfer HVPS Harness

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 18.1.22, REP 18.1.23 4-72 Xerox WorkCentre 6655 Color Multifunction Printer
REP 18.1.99 Varistor REP 18.2.2 IIT MCU Board Assembly
Parts List on PL 18.1 Item 99 Parts List on PL 18.2 Item 2
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove the Front Door Assembly, REP 19.1.20. 1. Remove the Left Cover Assembly, REP 19.2.99.
2. Remove the Left Cover Assembly, REP 19.2.99. 2. Refer to Figure 1 to locate and remove the five screws (silver, 6 mm) attaching the IIT
3. Remove the Development HVPS Board, REP 18.1.12. MCU Plate, and remove the plate in the direction of the arrow.
4. Remove the IP Box, REP 18.2.6. 3. Disconnect all of the connectors from the IIT MCU Board.
5. Remove the Main Drive Assembly, REP 3.1.1. 4. Remove the six screws (silver, 6 mm) attaching the IIT MCU Board, and remove the
6. Refer to Figure 1 to locate and remove the screw (silver, 6 mm) that attaches the Varistor board.
to the printer and remove the device.

Figure 1 Remove the IIT MCU Board

Figure 1 Remove the Varistor

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-73 REP 18.1.99, REP 18.2.2
Replacement NOTE: When installing IIT MCU Plate, place the bottom edge of the plate inside the top edge
of the IP Plate, then attach with the screw (silver, 6 mm) (Figure 3).
NOTE: When installing the IIT MCU Board, re-connect the Ground Wire using the screw in the
upper-right corner (Figure 2), and move the EEPROM over to the new pwb.

Figure 2 Re-connect the Ground Wire when Installing the IIT MCU Board

Figure 3 Replace the IIT MCU Plate

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 18.2.2 4-74 Xerox WorkCentre 6655 Color Multifunction Printer
REP 18.2.4 Hard Disk Package Kit
Parts List on PL 18.2 Item 4
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the Front Door Assembly, REP 19.1.20.
2. Remove the Left Cover Assembly, REP 19.2.99.
3. Remove the IP Plate, REP 18.2.7.
4. Unplug the Hard Disk Drive connectors P/J302 and P/J310 from the IP Board.
5. Refer to Figure 1 to locate and remove three screws (silver, 6 mm) attaching the Hard
Disk Bracket (with the Hard Disk Drive) to the IP Board.
6. Release the latch on the Hard Disk Drive to separate the drive from the bracket (Figure 2).

Figure 2 Separate the Hard Disk Drive from the Bracket

Figure 1 Remove the Hard Disk Package Kit

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-75 REP 18.2.4
REP 18.2.6 IP (ESS) Board
Parts List on PL 18.2 Item 6
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.

NOTE: Observe the following when removing or replacing the IP Board:

• Never remove the battery from the IP Board.
• Before removing the IP Board, disconnect all cables connected at the rear of the IP Box.
• When replacing the IP Board, be sure to retain the EEPROM, MEMORY CARD, Hard
Disk Drive, and, if installed, Optional Wireless Kit so they can be transferred to the new IP
Board.
• When replacing the IP Board, the Address Book data is lost. If possible, use the Address
Book Editor to save any data before removing the board.

1. Remove the Front Door Assembly, REP 19.1.20.

2. Remove the Left Cover Assembly, REP 19.2.99.
3. Remove the IP Plate, REP 18.2.7.
4. Remove the Hard Disk Package, but do not separate the Hard Disk Drive from its bracket,
REP 18.2.4.
5. Refer to Figure 1 to locate and unplug all connectors from the IP Board.
6. Refer to Figure 1 to locate and remove six screws (silver, 6 mm) from the IP Board, and
three screws (silver, 4 mm) from the rear ports that attach the IP Board to the IP Box, then
remove the board.

Figure 1 Unplug the IP Connectors and Remove the IP Board

Replacement
• When replacing the IP Board with a new board, refer to Figure 2 to transfer the following
items before installing the new IP Board:
– The EEPROM (U7901)
– The Memory Card
– The plug-in SD Card at back edge of board

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 18.2.6 4-76 Xerox WorkCentre 6655 Color Multifunction Printer
• When installing the IP Board, make sure that the harness is connected properly to the REP 18.2.7 IP (ESS) Plate Assembly
power connector P/J300. When the power is on without connecting the harness to the
power connector P/J300, the machine does not work properly. In this case, turn off the Parts List on PL 18.2 Item 7
power, wait five minutes, then turn on the power to restore proper operation. Removal
• Replace the Hard Disk Drive Package before replacing the IP Plate. WARNING
• Replace the Wireless Kit (if this option is installed).
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the Front Door Assembly, REP 19.1.20.
2. Remove the Left Cover Assembly, REP 19.2.99.
3. Disconnect the USB Cables from P/J343 and P/J345 on the IP Board.
4. Refer to Figure 1 to locate and remove the nine screws (silver, 6 mm) that attach the IP
Plate.

Figure 2 Transfer Components to the Replacement IP Board

Figure 1 Remove the IP Plate

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-77 REP 18.2.6, REP 18.2.7
REP 18.2.8 IP (ESS) Box
Parts List on PL 18.2 Item 8
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the Front Door Assembly, REP 19.1.20.
2. Remove the Left Cover Assembly, REP 19.2.99.
3. Remove the IP Plate Assembly, REP 18.2.7.
4. Remove the Hard Disk Package, REP 18.2.4.
5. Referring to Figure 1, unplug all connectors from the IP Board.

NOTE: When removing the IP Box, the IP Board remains attached to the box.

Figure 2 Remove the IP Box

Replacement
When replacing the IP Box, be sure the box’s mounting tab located at the bottom-right corner is
placed behind the bottom-left end of the Left Harness Guide.

Figure 1 Unplug the IP Board Connectors

6. Guide the disconnected harnesses out of the IP Box that feed through the sides.
7. Unplug the connector for the IP Fan.
8. Remove the IIT MCU Plate, four screws (silver, 6 mm)
9. Refer to Figure 2 to locate and remove the nine screws (silver, 6 mm) that attach the IP
Box to the chassis and remove the box. Don’t let the box fall.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 18.2.8 4-78 Xerox WorkCentre 6655 Color Multifunction Printer
REP 18.2.9 DDR3 DIMM Module Assembly REP 18.2.10 SD Card
Parts List on PL 18.2 Item 9 Parts List on PL 18.2 Item 10
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove the Left Cover, REP 19.2.99. 1. Remove the Left Side IF Cover, REP 19.2.3.
2. Remove the IP Plate, REP 18.2.7. 2. Refer to Figure 1 to locate the SD Card.
3. Refer to Figure 1 to locate the DIMM Module and use the ejector tabs to remove the mod- 3. To remove the SD Card, push the edge in to unlock the latch, then slide the card out.
ule.

Figure 1 Remove the DDR3 DIMM Module Assembly

Figure 1 Remove the SD Card

Replacement
To replace the SD Card, slide the card into the slot, pressing the edge until the latch locks.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-79 REP 18.2.9, REP 18.2.10
REP 18.2.11 Fax Board REP 18.2.13 Fax USB Cable
Parts List on PL 18.2 Item 11 Parts List on PL 18.2 Item 13
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
CAUTION 1. Remove the Left Cover Assembly, REP 19.2.99.
Do not remove the FAX Board from the protective bag until ready for installation. Always wear 2. Refer to Figure 1 to locate and unplug the upper end of the Fax USB Cable from the IP
a grounded wrist band while handling circuit boards. Board.
1. Remove the Left Side Cover, REP 19.2.99. 3. Release the cable from the clamps.
2. Refer to Figure 1 to locate and unplug the Fax cable from the end of the Fax Board. 4. Disconnect the lower end of the Fax USB Cable from the Fax Board.
3. Refer to Figure 1 to locate and remove two screws (silver, 6 mm) that secure the FAX
Board to the Fax Board Bracket.
4. Slide the Fax Board out of the Fax Board Bracket.

Figure 1 Remove the Fax USB Cable

Figure 1 Remove the FAX Board

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 18.2.11, REP 18.2.13 4-80 Xerox WorkCentre 6655 Color Multifunction Printer
REP 18.2.15 Front USB Cable Assembly REP 18.2.16 IP (ESS) Fan
Parts List on PL 18.2 Item 15 Parts List on PL 18.2 Item 16
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove the Left Cover Assembly, REP 19.2.99. 1. Remove the Left Cover Assembly, REP 19.2.99.
2. Unplug the lower end of the Front USB Cable. 2. Refer to Figure 1 to locate and disconnect the connector (P/J4331), then release the har-
3. Refer to Figure 1 to locate and release the cable clamp from the IIT MCU Box. ness from the harness guide.
4. Remove one screw (silver, tapping, 8 mm) and one screw (silver, 6 mm) attaching the 3. Remove one screw (silver, 6 mm) attaching the IP Fan Duct, and remove the duct
Front USB Bracket to the printer, and remove the bracket together with the Front USB together with the IP Fan.
Cable. 4. Release the two hooks attaching the IP Fan to the IP Fan Duct, then release the harness
5. Remove two screws (silver, 6 mm) attaching the Front USB Cable Assembly to the Front from the harness guide and remove the IP Fan.
USB Bracket, and remove the cable.

Figure 1 Remove the Front USB Cable Assembly

Figure 1 Remove the IP Fan

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-81 REP 18.2.15, REP 18.2.16
Replacement REP 18.3.2 LVPS
Note the orientation of the IP Fan in Figure 2 and re-install it so the label faces up. Parts List on PL 18.3 Item 2
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the Right Cover Assembly, REP 19.1.97.
2. Referring to Figure 1, disconnect all of the connectors on the LVPS.
3. Refer to Figure 1 to locate and remove the screw (silver, 6 mm) attaching the Upper LVPS
Duct and remove the duct.
4. Refer to Figure 1 to locate and release the two hooks attaching the Bottom LV Cap to the
printer, and pull out the cap.
5. Remove the five screws (silver, 6 mm) that attach the LVPS to the printer and remove the
LVPS.

Figure 2 Insert the Fan into the Duct with the Label Facing Up

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 18.2.16, REP 18.3.2 4-82 Xerox WorkCentre 6655 Color Multifunction Printer
 REP 18.3.9 Stapler Assembly
Parts List on PL 18.3 Item 9
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the Right Cover Assembly, REP 19.1.97.
2. Remove the Stapler Sub LVPS, REP 18.3.12.
3. Release the Stapler Harness from the harness guide.
4. Refer to Figure 1 to locate and remove one screw (silver, 6 mm) attaching the Stapler
Earth Plate to the printer and remove the plate.
5. Refer to Figure 1 to locate and remove three screws (silver, tapping, 8 mm) attaching the
Stapler Assembly to the printer, and remove the Stapler Assembly together with the Sta-
pler Interlock Harness Assembly.
6. To remove the Stapler Interlock Harness Assembly, unplug the harness connector from
the Stapler board.
7. Remove one screw (silver, 8 mm) attaching the Stapler Interlock Harness Assembly, to
the Stapler and remove the harness.

Figure 1 Remove the LVPS

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-83 REP 18.3.2, REP 18.3.9
 REP 18.3.12 Stapler Sub LVPS
Parts List on PL 18.3 Item 12
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove Right Cover Assembly, REP 19.1.97.
2. Disconnect the three connectors from the Stapler Sub LVPS.
3. Refer to Figure 1 to locate and remove the four screws (silver, 6 mm) that attach the Sta-
pler Sub LVPS to the printer, and remove the Stapler Sub LVPS.

Figure 1 Remove the Stapler Assembly

Figure 1 Remove the Stapler Sub LVPS

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 18.3.9, REP 18.3.12 4-84 Xerox WorkCentre 6655 Color Multifunction Printer
REP 18.3.99 AC Inlet Harness Assembly REP 18.4.2 Drive Harness Assembly
Parts List on PL 18.3 Item 99 Parts List on PL 18.4 Item 2
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove the Right Cover Assembly, REP 19.1.97. Refer to Figure 1 to locate the Drive Harness Assembly.
2. Referring to Figure 1, unplug connector P/J48 from the LVPS.
3. Remove the screw (silver, 6 mm) attaching the harness guide located above the Inlet
Assembly and loosen the guide from its location. It’s not necessary to remove it.
4. Unplug connector P/J800 from the Stapler Sub LVPS, and release from the harness
guides.
5. Remove the screw attaching the grounding wire to the printer frame.
6. Remove the two screws (silver, 6 mm) attaching the Inlet Harness Guide to the printer
and remove the guide.
7. Release the two hooks holding the AC Inlet and remove the AC Inlet.

Figure 1 Remove the AC Inlet Harness Assembly

Figure 1 Location of Drive Harness Assembly

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-85 REP 18.3.99, REP 18.4.2
REP 18.4.3 Main Harness Assembly REP 18.4.5 Top Harness Assembly
Parts List on PL 18.4 Item 3 Parts List on PL 18.4 Item 5
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
Refer to Figure 1 to locate the Main Harness Assembly. Refer to Figure 1 to locate the Top Harness Assembly running along the left and front sides of
the printer.

Refer to Figure 2 to locate the Top Harness Assembly running along the right side of printer.

Figure 1 Location of Main Harness Assembly

Figure 1 Location of Top Harness Assembly - Left Side and Front

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 18.4.3, REP 18.4.5 4-86 Xerox WorkCentre 6655 Color Multifunction Printer
 REP 19.1.1 Top Cover Assembly
Parts List on PL 19.1 Item 1
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Fuser, REP 7.1.1.
2. Remove the Transfer Belt Assembly, REP 6.1.97.
3. Remove the Scanner (IIT) Assembly, REP 51.1.14.
4. Remove the Top Exit Cover, REP 19.2.4.
5. Remove the Stapler Assembly, REP 18.3.9.
6. Open the Top Cover Assembly and refer to Figure 1 to locate and disconnect the Top
Cover’s Transfer 2 Link from the Transfer Coupling Link.

Figure 2 Location of Top Harness Assembly - Right Side

Figure 1 Disconnect the Transfer 2 Link from the Transfer Coupling Link

7. Refer to Figure 2 to locate and release the harness clamp from the bottom of the Right
Side Inner Cover, and to remove the three screws (silver, tapping, 8 mm) attaching the
Right Side Inner Cover to the printer; then remove the cover.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-87 REP 18.4.5, REP 19.1.1
 NOTE: The top of the harness guide for the Stapler Sub LVPS harness latches into the
Right Side Inner Cover. The harness guide will be detached when the Right Side Inner
Cover is removed.

Figure 2 Remove the Right Side Inner Cover Figure 3 Remove the Top Cover Assembly

8. Refer to Figure 3 to slide the Top Cover Assembly left hinge pin out of the Left Side Inner Replacement
Cover and remove the Top Cover. When replacing the Top Cover, if the installation hole on the Transfer Link Coupling for the
Transfer 2 Link is retracted, raise it by accessing the Transfer Link Coupling from inside the
frame as shown in Figure 4.

Latch the top of the harness guide for the Stapler Sub LVPS harness into the Right Side Inner
Cover after replacing the cover (Figure 2).

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 19.1.1 4-88 Xerox WorkCentre 6655 Color Multifunction Printer
 REP 19.1.20 Front Door Assembly
Parts List on PL 19.1 Item 20
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the Bypass Tray Assembly, REP 13.3.1.
2. Open the Front Door Assembly.
3. Referring to Figure 1, rotate the ends of the left and right Front Straps 90 degrees to
release them from the slots on printer.
4. Push the hinge on either the left or right side enough to release the hinge from the boss.
Then slide the door in the other direction to free the other hinge boss and remove the
door.

Figure 4 Reconnect the Transfer 2 Link to the Transfer Link Coupling

Figure 1 Remove the Front Door Assembly

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-89 REP 19.1.1, REP 19.1.20
REP 19.1.28 Staple Box REP 19.1.96 Right Side Door Assembly
Parts List on PL 19.1 Item 28 Parts List on PL 19.1 Item 96
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Remove Right Side Cover, REP 19.1.97. 1. Open the Right Side Door Assembly.
2. Refer to Figure 1 to locate the Staple Box and detach the harness clamp from the bottom. 2. Refer to Figure 1 to locate and remove the two screws (silver, tapping, 8 mm) that attach
3. Refer to Figure 1 to locate and remove two screws (silver, tapping, 8 mm) attaching the each of the Right Side Door Straps to the Right Cover Assembly.
Staple Box and remove the Staple Box. 3. Remove the Right Side Door Assembly while flexing it to release the bosses one by one
from the holes.
Tip: When removing the Right Side Door, lift it to the almost-closed position to allow it to
flex easily

Figure 1 Remove the Staple Box Figure 1 Remove the Right Side Door Assembly

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 19.1.28, REP 19.1.96 4-90 Xerox WorkCentre 6655 Color Multifunction Printer
REP 19.1.97 Right Cover Assembly
Parts List on PL 19.1 Item 97
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Waste Box, REP 8.1.7.
2. Remove the Waste Box Lock, REP 6.1.5.
3. Remove the Stapler Cover, REP 19.1.99.
4. Remove the Front Door Assembly, REP 19.1.20.
5. Open the Rear Cover.
6. Refer to Figure 1 to locate and remove the four screws (silver, tapping, 8 mm), and one
screw (silver, 6 mm) that attach the Right Cover to the printer at the front and rear.
7. Release the two bosses on the front, then, while flexing the front end slightly outward,
release the two bosses on the rear and tilt the top of the Right Cover Assembly out. If nec-
essary, use a flatblade screwdriver (or something similar) to release the two hooks below
the recessed grip while flexing the top outward.
8. Remove the Right Cover Assembly.

Figure 1 Remove the Right Cover Assembly

Replacement
When replacing the cover, secure the clip on the bottom of the cover first, then engage the
remaining clips and bosses (Figure 2).

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-91 REP 19.1.97
 REP 19.1.98 Right Interlock Switch Assembly
Parts List on PL 19.1 Item 98
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Right Cover Assembly, REP 19.1.97.
2. Referring to Figure 1, unplug connector P/J42 from the LVPS, and release the harness
from the guides.
3. Open the Top Cover.
4. Refer to Figure 1 to locate and remove the two screws (silver, tapping, 8 mm) that attach
the Right Side Interlock Bracket to the printer and remove the Right Interlock Switch
Assembly.

Figure 2 Secure the Bottom Clip before the Remaining Clips and Bosses

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 19.1.97, REP 19.1.98 4-92 Xerox WorkCentre 6655 Color Multifunction Printer
 REP 19.1.99 Stapler Right Side Cover
Parts List on PL 19.1 Item 99
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Open the Right Side Door.
2. Open the Stapler Door.
3. Refer to Figure 1 to locate and remove one screw (silver, tapping, 8 mm).
4. Close the Stapler Door, then release the tab at the bottom of the Stapler Cover and pull
the Stapler Cover to the front.
5. After removing the Stapler Cover, remove the Stapler Door by opening the door, then lift-
ing it off the Stapler Cover hinges.

Figure 1 Remove the Right Interlock Switch Assembly

Figure 1 Remove the Stapler Cover and Door

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-93 REP 19.1.98, REP 19.1.99
REP 19.2.3 Left Side IF Cover REP 19.2.4 Top Exit Cover
Parts List on PL 19.2 Item 3 Parts List on PL 19.2 Item 4
Removal Removal
WARNING WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury. injury. Moving parts can cause injury.
1. Refer to Figure 1 to locate and remove one screw (silver, tapping, 8 mm). WARNING
2. Remove the IF Cover. The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
1. Remove the Fuser Assembly, REP 7.1.1
2. Remove the Right Cover, REP 19.1.97.
3. Remove the Left Cover Assembly, REP 19.2.99.
4. Remove the Scanner Assembly, REP 51.1.14.
5. Refer to Figure 1 to remove the Top Exit Cover.

Figure 1 Remove the Left Side IF Cover

Figure 1 Remove the Top Exit Cover

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 19.2.3, REP 19.2.4 4-94 Xerox WorkCentre 6655 Color Multifunction Printer
REP 19.2.98 Rear Cover Assembly CAUTION
To prevent the door from falling off as you remove the screws, support the door from under-
Parts List on PL 19.2 Item 98 neath.
Removal
NOTE: The removal procedure for Rear Cover Link is the same on both the right and left sides.
WARNING
4. Referring to Figure 2, remove the Rear Cover Links by raising the Rear Cover slightly so
Switch off the electricity to the machine. Disconnect the power cord from the customer
that the holes on the Rear Cover Links can be released from the keyed bosses on the left
supply while performing tasks that do not need electricity. Electricity can cause death or
and right.
injury. Moving parts can cause injury.
5. Raise the Left Hinge Shaft on the left side and slide the pin to the right to remove it.
WARNING
6. Swing the right side of the assembly out so that the corner is clear of the frame, then
The Fuser is very hot. Take added care when handling the fuser to avoid being burned.
move the assembly to the left to disengage the hinge pin on the right side. When the
1. Open the Rear Door Assembly. grounding spring is clear of the hinge pin, lift the Rear Cover/Duplex Assembly away from
2. Remove the Transfer Roller, REP 14.1.99. the printer.

NOTE: In the following step, to gain access to the screw attaching the wire to the Duplexer,
squeeze the Duplexer together and lock in place with a small screwdriver as shown in Figure 1.

3. Refer to Figure 1 to locate and remove the screw (silver, tapping, 8 mm) that attaches the
power supply (pink wire) to the Duplex Assembly, and release the wire from the harness
guide.

Figure 1 Remove the Transfer HVPS Harness

Figure 2 Remove the Rear Cover/Duplex Assembly

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-95 REP 19.2.98
REP 19.2.99 Left Cover Assembly Replacement
Parts List on PL 19.2 Item 99 When replacing the cover, secure the clip on the bottom of the cover first, then engage the
remaining clips and bosses (Figure 2).
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the Front Door Assembly, REP 19.1.20.
2. Remove the Left Side IF Cover, REP 19.2.3.
3. Remove the Left UI Base Cover, REP 1.1.6.
4. Refer to Figure 1 to locate and remove two screws (silver, tapping, 8 mm) and two screws
(silver, 6 mm) that attach the Left Cover Assembly to the printer.
5. Release the bosses on the front and rear of the Left Cover Assembly, and release the two
hooks below the recessed grip using a flatblade screwdriver while flexing the front end
slightly outward.

Figure 2 Secure the Bottom Clip before the Remaining Clips and Bosses

Figure 1 Remove the Left Cover Assembly

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 19.2.99 4-96 Xerox WorkCentre 6655 Color Multifunction Printer
REP 51.1.1 DADF Assembly 5. On the underside of the left end of the Scanner, remove the two screws (silver, tapping, 8
mm) that attach the two Scanner/DADF cable clamps.
Parts List on PL 51.1 Item 1 6. Note which harnesses are included in the cable clamps, and pull the clamps off.
Removal 7. Tilt the DADF up, and pull the DADF harness out of the hole on the Scanner (IIT) Assem-
WARNING bly (PL51.1.14).
Switch off the electricity to the machine. Disconnect the power cord from the customer 8. Lift the DADF to expose the hinges. Referring to Figure 2, use a small, flat-bladed screw-
supply while performing tasks that do not need electricity. Electricity can cause death or driver to release the hook of the Right Hinge Assembly (shown in Figure 3) and remove
injury. Moving parts can cause injury. the DADF Assembly from the Scanner (IIT) Assembly.
WARNING
Do not touch the Fuser while it is hot.
1. Remove the Left Cover Assembly, REP 19.2.99.
2. Refer to Figure 1 to locate and remove the five screws (silver, 6 mm) attaching the IIT
MCU Plate (PL18.2.1), and remove the plate.
3. Refer to Figure 1 to locate and remove one screw (silver, 6 mm) attaching the ground wire
to the IIT MCU Board, and remove the ground wire
4. Locate in Figure 1 connectors P/J451,P/J452,P/J453 and disconnect from the Board.

Figure 2 Remove the DADF from the Scanner

Figure 1 Remove the IIT MCU Plate and Disconnect the Scanner Connectors Figure 3 Release Hook on Right Hinge Assembly

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-97 REP 51.1.1
Replacement REP 51.1.9 DADF Hinges
When replacing the cable clamps be sure to include the same harnesses that were released Parts List on PL 51.1 Item 9, PL 51.1 Item 10
during removal.
Removal
1. Remove the DADF, REP 51.1.1, and rest upside down on the work surface.
2. Refer to Figure 1 to locate and remove four screws (silver, tapping, 8 mm) to remove the
Right Hinge or five screws (silver, tapping, 8 mm) to remove the Left Hinge.

Figure 1 Remove the DADF Hinges

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 51.1.1, REP 51.1.9 4-98 Xerox WorkCentre 6655 Color Multifunction Printer
REP 51.1.11 DADF Input Tray Assembly
Parts List on PL 51.1 Item 11
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Remove the DADF Assembly, REP 51.1.1.
2. Turn the DADF over, and refer to Figure 1 to locate and remove four screws (silver, tap-
ping, 8 mm) from the bottom of the DADF rear cover.

Figure 2 Remove the DADF Rear Cover

4. Refer to Figure 3 to locate and cut the cable tie on the tray harness, then disconnect the
yellow connector (CON 12) and remove the tray by lifting and moving it towards the har-
nesses.
Figure 1 Remove the DADF Rear Cover Screws

3. Turn the DADF upright and refer to Figure 2 to raise the DADF Top Cover and Input Tray
Assembly to release the rear cover.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-99 REP 51.1.11
 REP 51.1.14 Scanner (IIT) Assembly
Parts List on PL 51.1 Item 14
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
Do not touch the Fuser while it is hot.
1. Remove the Right Cover Assembly, REP 19.1.97.
2. Remove the Stapler Sub LVPS, REP 18.3.12.
3. Refer to Figure 1 to locate and remove the three screws (silver, tapping, 8 mm) and the
one screw (silver, 6 mm) attaching the Stapler Bracket (PL18.3.11) and a ground wire to
the printer, and remove the Stapler Bracket.

Figure 3 Remove the DADF Tray Assembly

Replacement
Route the tray harness through the slot provided in tray’s rear boss, and tie all of the harnesses
together again that were released from the cable tie.

Figure 1 Remove the Stapler Bracket and Scanner Assembly Screws

4. Refer to Figure 2 to locate and remove three screws (silver, tapping, 10 mm) attaching the
right side of the Scanner Assembly.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 51.1.11, REP 51.1.14 4-100 Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 2 Remove the Screws Attaching the Scanner Assembly

5. Remove the Left Cover Assembly, REP 19.2.99.

6. Refer to Figure 3 to locate and remove five screws (silver, 6 mm) attaching the IIT MCU
Plate (PL18.2.1), and remove the plate.
7. Refer to Figure 3 to locate and disconnect the connectors (P/J451, P/J452, P/J453, P/
J454) from the IIT MCU Board. After disconnecting P/J454, feed the harness out of the IIT
MCU Box.
8. Refer to Figure 3 to locate and remove one screw (silver, 6 mm) attaching the ground wire Figure 3 Remove the IIT MCU Plate and Disconnect the Scanner Connectors
to the IIT MCU Board, and remove the ground wire.
9. Refer to Figure 2 to locate and remove one screw (silver, tapping, 8 mm), two screws (sil-
ver, tapping 10 mm) and one screw (silver, 8 mm) attaching the left side of the Scanner
Assembly.
10. Slide the Scanner Assembly left to release the four bosses and remove.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-101 REP 51.1.14
REP 51.1.97 DADF Pick-Up Module
Parts List on PL 51.1 Item 97
Removal
1. Open the DADF Top Cover.
2. Remove the guides from the Pick-up Assembly shaft.
3. Refer to Figure 1 to locate and release the bearing locks at each end of the shaft to
remove the assembly.

Figure 2 Remove the IIT Separation Pad

Figure 1 Remove the DADF Pick-up Assembly

4. Refer to Figure 2 to release two clips and remove the Separation Pad.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 51.1.97 4-102 Xerox WorkCentre 6655 Color Multifunction Printer
REP 51.1.98 DADF Top Cover Assembly
Parts List on PL 51.1 Item 98
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Open the DADF Top Cover.
2. Refer to Figure 1 to locate and release the cover from the hinge bosses to remove.

Figure 2 Install the DADF Top Cover

Figure 1 Remove the DADF Top Cover

3. Remove the Pick-up Assembly, REP 51.1.97, and transfer to the replacement cover.
Replacement
Refer to Figure 2 and raise the Top Cover tabs (black) before installing the Top Cover.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-103 REP 51.1.98
Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
REP 51.1.98 4-104 Xerox WorkCentre 6655 Color Multifunction Printer
ADJ 1.1 Altitude Adjustment ADJ 2.1 Laser Lens Cleaning
Purpose Parts List on PL 2.1
Print quality varies with barometric pressure. Since the barometric pressure decreases as the Purpose
altitude increases, altitude can affect the print quality. To optimize print quality for your location,
This procedure explains how to clean the laser lenses which can help fix problems with prints
select an altitude setting to match the location by entering Service Mode and editing NVM
that have voids or light streaks through one or more color. Refer to GP 33 for general cleaning
using a specific Chain-Link code.
precautions.

Adjustment Adjustment
When editing NVM values, refer to “NVM Save and Restore” (dC361) for detailed instructions.
WARNING
1. Enter Service Mode and navigate to Printer Diag > Engine Diag > NVM Settings > Edit
Ensure that the electricity to the machine is switched off while performing tasks that do
NVM.
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
2. Enter the Chain-Link code 746-515.
Moving parts can cause injury.
3. Referring to Table 1, set the NVM value to 1, 2, 3, 4, 5, 6, or 7, corresponding to which-
CAUTION
ever is closest to your altitude in meters. The default setting is 0. Use only the NVM val-
If you accidentally get toner on your clothes, lightly dust them off as best as you can. If some
ues listed in Table 1.
toner remains on your clothes, use cool water, not hot, to rinse off the toner. If toner gets on
your skin, wash it off with cool water and a mild soap. If you get toner in your eyes, wash it out
Table 1 NVM Values for Altitude
immediately with cool water and consult a doctor
Adjustment
CAUTION
Altitude NVM Value
If the optional Productivity Kit (HD) is not installed, ensure that the Ready LED is off before you
0m 0 (default) turn off the printer. The data in the memory is cleared if the printer is turned off.
500 m 1 1. Open the right side door, Figure 1.
1000 m 2
1500 m 3
2000 m 4
2500 m 5
3000 m 6
3500 m 7

Figure 1 Open the Right Side Door

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-105 ADJ 1.1, ADJ 2.1
2. To unlock the waste cartridge, turn the waste cartridge lever 90-degrees counterclock-
wise, Figure 2.

Figure 4 Keep Waste Cartridge Openings Facing Up

4. Place the removed waste cartridge on a level surface, Figure 5.

Figure 2 Unlock the Waste Cartridge

3. Grasp the handle of the waste cartridge, then pull it out, Figure 3. To prevent toner spills,
keep the openings facing up, Figure 4.

Figure 5 Waste Cartridge Placed on a Level Surface

Figure 3 Remove the Waste Cartridge

NOTE:
• Be careful not to spill toner when handling the waste cartridge.
• After removing the waste cartridge, do not touch the area shown in Figure 4.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
ADJ 2.1 4-106 Xerox WorkCentre 6655 Color Multifunction Printer
 CAUTION
To avoid toner spills or malfunction, do not lay the waste cartridge on its side, Figure 6.

Figure 6 Do Not Lay the Waste Cartridge with Openings Facing Down

5. Remove the cleaning rod from inside the printer, Figure 7.

Figure 8 Use the Cleaning Rod to Clean the Laser Lenses for Each Color

7. Repeat the procedure for the holes in the other three slots.
8. Return the cleaning rod to its original location, Figure 9.

Figure 7 Remove the Cleaning Rod

6. Insert the cleaning rod into one of the four cleaning holes until it clicks, Figure 8, then pull
it out. Repeat this two more times. Repeat this step for the other three colors.

Figure 9 Replace Cleaning Rod

9. Reinsert the waste cartridge, and turn the waste cartridge lock lever 90-degrees clock-
wise, Figure 10.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-107 ADJ 2.1
 ADJ 5.1 Color Registration Adjustment
Purpose
Adjusts the color registration after the printer is moved, or after replacing a toner cartridge, or if
there are printer output problems such as blurry or hazy prints, or prints with color halos.

Adjustment
Adjusting the Color Registration is accomplished in two ways:

• Automatically, by setting Automatic Registration. See Setting Automatic Color Registra-

tion.
• Manually, by printing a Color Registration Chart and adjusting registration based on out-
put results. See Performing a Manual Color Registration Adjustment.
Setting Automatic Color Registration
Once Automatic Color Registration is set, automatic adjustment occurs every time a new toner
cartridge is installed. To run an automatic adjustment at other times, see Performing an Auto-
matic Color Registration Adjustment.

Figure 10 Reinsert and Lock the Waste Cartridge To set Automatic Color Registration:
1. At the control panel, press the Machine Status button.
NOTE: If the waste cartridge does not fit into place properly, ensure that the Transfer Belt
2. Touch Tools, then touch Admin Settings.
is inserted fully (REP 6.1.97).
3. Touch Service Tools.
10. Close the side door, Figure 11. 4. Touch Auto Registration, then touch On.
5. Touch OK.
Performing an Automatic Color Registration Adjustment
Run automatic color registration adjustment as needed.

To run automatic color registration adjustment:

1. At the printer control panel, press the Machine Status button.
2. Touch Tools, then touch Admin Settings.
3. Touch Service Tools.
4. Touch Color Registration > Auto Registration > On.
The printer runs while it performs the Auto Registration routine.
Performing a Manual Color Registration Adjustment
Color Registration adjusts the printer to make corrections to blurry or hazy prints, or prints with
color halos.

To perform a color registration adjustment:

1. Ensure the printer is idle.
Figure 11 Close the Side Door 2. At the control panel, press the Machine Status button.
3. Touch Tools, then touch Admin Settings.
4. Touch Service Tools.
5. Touch Color Registration > Print Registration Chart.
6. Starting with the left side calibration lines, circle the line in each group where the color bar
aligns with the adjacent black bars. An example is shown in Figure 1.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
ADJ 2.1, ADJ 5.1 4-108 Xerox WorkCentre 6655 Color Multifunction Printer
 11. Touch Next.
12. To enter values for each RY, RM, and RC fields, use - and + to adjust the value to what
you circled in step 7.
13. Touch Next.
14. To enter values for each PY, PM, and PC fields, use - and + to adjust the value to what
you circled in step 8.
15. Touch OK.
16. Print another Registration Chart, then repeat the process until you complete the color reg-
istration corrections.
17. Touch the Back arrow to return to the next menu level, or press the Services Home button
Figure 1 Circle the Group with Aligned Color and Black Bars to return to Service Home.

7. Repeat the process for the right side calibration lines, RY, RM, and RC.
8. Align a straight edge through the middle of the white zone in each of the PY, PM, and PC
charts. Circle the number at the end of each chart that represents the middle of the white
zone. An example is shown in Figure 2.

Figure 2 Circle the Number Representing the Middle of the White Zone

9. Touch Enter Registration Value.

10. To enter values for each LY, LM, and LC fields, use - and + to adjust the value to what you
circled in step 6.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-109 ADJ 5.1
ADJ 6.1 Color Toner Density Sensors Cleaning
Parts List on PL 6.1
Purpose
This procedure explains how to clean the color toner density (CTD) sensors which can help fix
problems with prints that have voids or light streaks through one or more color. Refer to GP 33
for general cleaning precautions.

Adjustment
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
WARNING
If you accidentally get toner on your clothes, lightly dust them off as best as you can. If
some toner remains on your clothes, use cool water, not hot, to rinse off the toner. If
toner gets on your skin, wash it off with cool water and a mild soap. If you get toner in
your eyes, wash it out immediately with cool water and consult a doctor.
1. Turn off the printer.
CAUTION
If the optional Productivity Kit (HD) is not installed, ensure that the Ready LED is off before you
turn off the printer. The data in the memory is cleared when the printer is turned off.
Figure 2 Open the Side Door
2. Push down on the rear door release and pull open the door, Figure 1.

4. To unlock the waste cartridge, turn the waste cartridge lever 90-degrees counterclock-
wise, Figure 3.

Figure 1 Open the Rear Door

3. Open the side door, Figure 2. Figure 3 Unlock the Waste Cartridge

5. Grasp the handle of the waste cartridge, then pull it out, Figure 4. To prevent toner spills,
keep the openings facing up, Figure 5.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
ADJ 6.1 4-110 Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 6 Waste Cartridge Placed on a Level Surface
Figure 4 Remove the Waste Cartridge
CAUTION
NOTE: To avoid toner spills or malfunction, do not lay the waste cartridge on its side, Figure 7.
• Be careful not to spill toner when handling the waste cartridge.
• After removing the waste cartridge, do not touch the area shown in Figure 5.

Figure 7 Do Not Lay the Waste Cartridge with Openings Facing Down

7. Open the top cover, Figure 8.

Figure 5 Keep Waste Cartridge Openings Facing Up

6. Place the removed waste cartridge on a level surface, Figure 6.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-111 ADJ 6.1
 Figure 8 Open the Top Cover

8. Pull out the Transfer Belt (REP 6.1.97), Figure 9.

Figure 10 Clean the CTD Sensors with a Cotton Swab

10. Reinsert the Transfer Belt unit into the printer, Figure 11.

Figure 9 Remove the Transfer Belt

9. Use a dry cotton swab to clean the color toner density sensors, Figure 10.

Figure 11 Reinsert the Transfer Belt

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
ADJ 6.1 4-112 Xerox WorkCentre 6655 Color Multifunction Printer
11. Close the top cover, Figure 12.

Figure 14 Close the Side Door

Figure 12 Close the Top Cover 14. Close the rear door, Figure 15.

12. Reinsert the waste cartridge, and turn the waste cartridge lock lever 90-degrees clock-
wise, Figure 13.

Figure 13 Reinsert and Lock the Waste Cartridge

NOTE: If the waste cartridge does not fit into place properly, ensure that the Transfer Belt Figure 15 Close the Rear Door
is inserted fully.

13. Close the side door, Figure 14.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-113 ADJ 6.1
ADJ 6.2 Transfer Belt Offsets Adjustment ADJ 6.3 Transfer Roller Bias Adjustment
Purpose Purpose
The Transfer Belt Offset needs adjustment only in cases where the Transfer Roller Bias adjust- The bias voltage applied to the Transfer Roller (BTR2) controls how the toner transfers from
ment has reached its limit without resolving the problem concerning the transfer of toner from the Transfer Belt to the paper. If the bias voltage is too low, the toner does not transfer properly,
the Transfer Belt to the paper. producing light colors and white spots. If the bias voltage is too high, the image can become
mottled.
Adjustment
Adjusting the Transfer Belt Offset for black (K) or color (YMC) is accomplished in one of two Adjustment
ways: Adjusting the Transfer Roller bias is accomplished in one of two ways:

• Use the Service Tools menu in Admin Settings. See Using Service Tools Menu. • Use the Service Tools menu in Admin Settings. See Using Service Tools Menu.
• Enter Service Mode and edit NVM using a specific Chain-Link code. See Editing NVM • Enter Service Mode and edit NVM using a specific Chain-Link code. See Editing NVM
Values in Service Mode. Values in Service Mode.
Using Service Tools Menu Using Service Tools Menu
To adjust the Transfer Belt offsets using Service Tools menu: Using this method, you can adjust the Transfer Roller Bias for each of the following paper
1. At the control panel, press the Machine Status button. types:
2. Touch Tools, then touch Admin Settings.
• Plain
3. Touch Service Tools.
• Light Card
4. Touch Adjust Transfer Belt Unit.
• Heavy Card
5. Touch K Offset or YMC Offset.
• LW Gloss Card
6. Touch the - or + on the screen to lower or raise the offset value. Set to a value between -5
• HW Gloss Card
and +5.
• Labels
7. Touch OK to apply the setting.
• Envelope
Editing NVM Values in Service Mode
To adjust the Transfer Roller bias using Service Tools menu:
When editing NVM values, refer to “NVM Save and Restore” (dC361) for detailed instructions.
1. At the control panel, press the Machine Status button.
Refer to Table 1 for the Chain-Link codes associated with the K and YMC Offsets.
2. Touch Tools, then touch Admin Settings.
To adjust the Transfer Belt Offset: 3. Touch Service Tools.
1. Enter Service Mode and navigate to Printer Diag > Engine Diag > NVM Settings > Edit 4. Touch Adjust Transfer Roller.
NVM. 5. Touch one of the paper types.
2. Enter the Chain-Link code (see Table 1) for either K or YMC Offset. 6. Touch the - or + on the screen to lower or raise the bias value. Set to a value between -5
and +10.
Table 1 Chain-Link Codes for Offset
7. Touch OK to apply the setting.
Adjustment
Editing NVM Values in Service Mode
Parameter Range Initial Chain-Link
When editing NVM values, refer to “NVM Save and Restore” (dC361) for detailed instructions.
K Offset 1~11 6 746-516 Refer to Table 1 for the Chain-Link codes associated with the various different paper types.
YMC Offset 1~11 6 746-517
To adjust the Transfer Roller bias by editing NVM values:
CAUTION 1. Identify the paper type that is producing symptoms of mis-adjusted bias.
In the following step, do not use values higher than 11. 2. Enter Service Mode and navigate to Printer Diag > Engine Diag > NVM Settings > Edit
NVM.
3. Adjust the value up or down as necessary to a value with the range 1-11. The default set-
ting is 6.

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
ADJ 6.2, ADJ 6.3 4-114 Xerox WorkCentre 6655 Color Multifunction Printer
3. Enter the Chain-Link code for the paper identified in step 1. Refer to Table 1 for the appro- ADJ 7.1 Fuser Adjustment
priate Chain-Link code.
Purpose
Table 1 Chain-Link Codes for Paper Type Adjustment The Fuser uses heat and pressure to bond the toner image to the paper. For optimal print qual-
Parameter Paper Type Range Initial Chain Link ity, the printer automatically adjusts the temperature of the Fuser when you change the paper
type. Because of differences in paper construction and thickness, the adjustment made by the
Plain Paper-L Hole-Punched or Colored 1~16 6 746-500 printer is not enough or is too much for all paper types. If the Fuser temperature is too low, the
Plain Paper-H Plain 1~16 6 746-501 toner will not properly bond to the paper. If the Fuser is too hot, the paper can curl.
Recycled Recycled 1~16 6 746-503
Heavier Paper-L Special or Heavyweight Cardstock 1~16 6 746-504 Adjustment
Heavier Paper-H Special or Heavyweight Cardstock 1~16 6 746-505 Changing the Fuser temperature for a particular paper type is accomplished in one of two
ways:
Coated Paper-M Lightweight Glossy Cardstock 1~16 6 746-512
Coated Paper-H Heavyweight Glossy Cardstock 1~16 6 746-513
• Use the Service Tools menu in Admin Settings. See Using Service Tools Menu.
Envelope Envelope 1~16 6 746-509
• Enter Service Mode and edit NVM using a specific Chain-Link code. See Editing NVM
Label-H Labels 1~16 6 746-507 Values in Service Mode.
Using Service Tools Menu
CAUTION
Using this method, you can adjust the Fuser temperature for each of the following paper types:
In the following step, do not use values higher than 16.
4. Adjust the value up or down as necessary to a value with the range 1-16. The default set- • Plain
ting is 6. • Light Card
• Heavy Card
• LW Gloss Card
• HW Gloss Card
• Labels
• Envelope
To adjust the Fuser temperature using Service Tools menu:
1. At the control panel, press the Machine Status button.
2. Touch Tools, then touch Admin Settings.
3. Touch Service Tools.
4. Touch Adjust Fuser.
5. Touch one of the paper types.
6. Touch the - or + on the screen to lower or raise the temperature change value. Set to a
value between -3 and +3.
Each value of the setting raises (if positive) or lowers (if negative) the Fuser temperature
by three degrees celsius above or below the default temperature for the specified paper
type and printer speed. For example, a value of +2 will raise the temperature by six
degrees celsius.
7. Touch OK to apply the setting.
Editing NVM Values in Service Mode
When editing NVM values, refer to “NVM Save and Restore” (dC361) for detailed instructions.
Refer to Table 1 for the Chain-Link codes associated with the various different paper types.

To adjust the Fuser temperature by editing NVM values:

1. Identify the paper type for which you need to adjust the fuser temperature.

Initial Issue - Xerox Internal Use Only 9/2014 Repairs and Adjustments
Xerox WorkCentre 6655 Color Multifunction Printer 4-115 ADJ 6.3, ADJ 7.1
2. Enter Service Mode and navigate to Printer Diag > Engine Diag > NVM Settings > Edit ADJ 9.1 Paper Type Adjustment
NVM.
3. Enter the Chain-Link code for the paper identified in step 1. Refer to Table 1 for the appro-
Purpose
priate Chain-Link code. Compensates for paper thickness within a paper type.
4. Adjust the value up or down as necessary using one of the following settings:
-9, -6, -3, 0 (default), +3, +6, +9.
Adjustment
The value of the setting raises (if positive) or lowers (if negative) the Fuser temperature If the printed image is too light, use the Heavyweight setting for the paper in use. If the printed
for the specified paper type and printer speed. For example, entering +3 will raise the image is mottled or blotchy-looking, use the Lightweight setting.
temperature by three degrees celsius.
To adjust the paper type:
Table 1 Paper Type Chain-Link Codes for Fuser Temperature Adjustment 1. At the control panel, press the Machine Status button.
2. Touch Tools, then touch Admin Settings.
Media Name Media Mode Chain-Link Default
3. Touch Service Tools.
Plain Plain-H 744-016 0
4. Touch Adjust Paper Type.
Special Heavier-L 744-017 0
5. Select Plain or Label, then touch OK.
Hole Punched Plain-L 744-018 0
6. Select Lightweight or Heavyweight, then touch OK to apply the setting.
Colored Plain-L 744-019 0
Lightweight Cardstock Heavier-L 744-036 0
Heavyweight Cardstock Heavier-H 744-037 0
Labels Label-H 744-039 0
Envelope Envelope 744-041 0
Lightweight Glossy Cardstock Coated-M 744-044 0
Heavyweight Glossy Cardstock Coated-H 744-045 0

Repairs and Adjustments 9/2014 Initial Issue - Xerox Internal Use Only
ADJ 7.1, ADJ 9.1 4-116 Xerox WorkCentre 6655 Color Multifunction Printer
 5 Parts Lists
UI Base PL 18.3 Electrical (3 of 4) ................................................................................................ 5-25
PL 1.1 UI Base ................................................................................................................ 5-3 PL 18.4 Electrical (4 of 4) ................................................................................................ 5-26
PL 1.2 Console UI ........................................................................................................... 5-4
Cover
ROS PL 19.1 Cover (1 of 2) ..................................................................................................... 5-27
PL 2.1 ROS ..................................................................................................................... 5-5 PL 19.2 Cover (1 of 2) ..................................................................................................... 5-28

Drive IIT/DADF
PL 3.1 Drive .................................................................................................................... 5-6 PL 51.1 IIT/DADF ............................................................................................................ 5-29

NOHAD
PL 4.1 NOHAD ................................................................................................................ 5-7

Dispenser
PL 5.1 Dispenser............................................................................................................. 5-8

Transfer
PL 6.1 Transfer ............................................................................................................... 5-9

Fuser
PL 7.1 Fuser.................................................................................................................... 5-10

Xerographics
PL 8.1 Xerographics........................................................................................................ 5-11

Tray
PL 9.1 Tray...................................................................................................................... 5-12

Option Feeder
PL 10.1 Option Feeder (1 of 3) ....................................................................................... 5-13
PL 10.2 Option Feeder (2 of 3) ....................................................................................... 5-14
PL 10.3 Option Feeder (3 of 3) ....................................................................................... 5-15

MSI
PL 13.1 MSI (1 of 3) ........................................................................................................ 5-16
PL 13.2 MSI (2 of 3) ........................................................................................................ 5-17
PL 13.3 MSI (3 of 3) ........................................................................................................ 5-18

Duplex
PL 14.1 Duplex................................................................................................................ 5-19

Registration/Feeder
PL 15.1 Registration/Feeder (1 of 2)............................................................................... 5-20
PL 15.2 Registration/Feeder (2 of 2)............................................................................... 5-21

Exit
PL 17.1 Exit..................................................................................................................... 5-22

Electrical
PL 18.1 Electrical (1 of 4)................................................................................................ 5-23
PL 18.2 Electrical (2 of 4)................................................................................................ 5-24

Initial Issue - Xerox Internal Use Only 9/2014 Parts Lists

Xerox WorkCentre 6655 Color Multifunction Printer 5-1
Parts Lists 9/2014 Initial Issue - Xerox Internal Use Only
5-2 Xerox WorkCentre 6655 Color Multifunction Printer
PL 1.1 UI Base
Item Part Description
1 848K91323 Consol Assy UI AIO 110V
– 848K91334 Consol Assy UI AIO 220V
2 822E07120 Cover IIT Front
3 822E07140 Cover IIT Front Bottom
4 822E07001 Cover UI Base Right Upper
5 – --
6 822E07021 Cover UI Base Left
7 – Frame Assy UI Under (with 8, 9)
8 – Plate UI Under
9 – Plate UI Base

Initial Issue - Xerox Internal Use Only 9/2014 Parts Lists

Xerox WorkCentre 6655 Color Multifunction Printer 5-3 PL 1.1
PL 1.2 Console UI

Parts Lists 9/2014 Initial Issue - Xerox Internal Use Only

PL 1.2 5-4 Xerox WorkCentre 6655 Color Multifunction Printer
PL 2.1 ROS
Item Part Description
1 062K25870 ROS Assy (with 2, 3)
2 – Harness Assy-Video
3 – ROS Sub Assy

Initial Issue - Xerox Internal Use Only 9/2014 Parts Lists

Xerox WorkCentre 6655 Color Multifunction Printer 5-5 PL 2.1
PL 3.1 Drive
Item Part Description
1 007K20811 Drive Assy Main
2 007K17962 Drive Assy Waste
3 – Gear Waste 2
4 – Bearing Waste 1
5 – Shaft Idler Waste
6 – Bearing Waste 2
7 – Gear Waste 3
8 007K17971 Drive Shaft Assy (with 3, 5, 7)
9 604K90780 Kit Bearing Waste (with 4, 6)

Parts Lists 9/2014 Initial Issue - Xerox Internal Use Only

PL 3.1 5-6 Xerox WorkCentre 6655 Color Multifunction Printer
PL 4.1 NOHAD
Item Part Description
1 – Duct Frame SEG3
2 – Duct Base SEG3
3 – Spring Latch
4 – Latch Rear Right
5 – Bracket Latch Left
6 – Frame Rear S3
7 – Actuator-Belt IL RT
8 – Holder-Belt IL
9 – Spring-Belt IL
10 – Actuator-Belt IL LN
11 – Cover-Sensor Waste
12 – Screw Fan (Not Shown)
13 127E86480 Fan Main
14 – Foot Rear
15 – Foot Base Front
16 – Foot
17 930W00511 Sensor Toner Full
18 – Latch Rear Left
97 604K73980 Kit Latch Left (with3, 18)
98 604K76341 Kit Foot Assy (with 14, 15x3, 16x3)
99 604K76350 KitT Latch Right (with3, 4)

Initial Issue - Xerox Internal Use Only 9/2014 Parts Lists

Xerox WorkCentre 6655 Color Multifunction Printer 5-7 PL 4.1
PL 5.1 Dispenser
Item Part Description
1 127K64252 Motor High Assy Dispenser (with 2,
3)
2 127K64260 Motor Assy Dispenser
3 – Motor Assy Gear
4 094K93433 Dispenser Assy - Y
5 094K93423 Dispenser Assy - M
6 094K93413 Dispenser Assy - C
7 094K93403 Dispenser Assy - K
8 – Toner Cartridge Y
9 – Toner Cartridge M
10 – Toner Cartridge C
11 – Toner Cartridge K

Parts Lists 9/2014 Initial Issue - Xerox Internal Use Only

PL 5.1 5-8 Xerox WorkCentre 6655 Color Multifunction Printer
PL 6.1 Transfer
Item Part Description
1 604K77531 Belt Assy - IBT, Unit
2 – Latch - IBT Front
3 – Spring - IBT Front Right
4 – Actuator - Coupling
5 803E15100 Handle - IBT
6 032K07422 Guide Assy - IBT L (with 2, 8, 10,
20-24, 26)
7 – Housing - Latch IBT Right
8 – Spring - Latch IBT
9 – Spring - IBT Rear Right
10 – Plate - Latch IBT
11 – Arm-Latch IBT Right
12 – Guide - CTD Right
13 809E96300 Spring - CTD
14 130K77830 Sensor Assy CTD
15 – Pin - Dowel
16 – Shaft - Coupling
17 – Coupling - Retract IBT
18 – Spring - Coupling
19 – Cover - Harness IBT
20 – Guide - Belt Left
21 – Spring - IBT Front Left
22 – Spring - IBT Rear Left
23 – Housing - Latch IBT Left
24 – Arm - Latch IBT Left
25 – --
26 – Spring - GND ADC

98 604K76280 Kit Latch Right (with7-11)

99 604K76290 Kit Coupling (with15-18)

Initial Issue - Xerox Internal Use Only 9/2014 Parts Lists

Xerox WorkCentre 6655 Color Multifunction Printer 5-9 PL 6.1
PL 7.1 Fuser
Item Part Description
1 115R00088 Fuser Assy 110V
2 –
115R00089 --
Fuser Assy 220V
3 – --
4 – --
5 – Harness Assy HTR 100V
1A – Harness Assy HTR 200V

Parts Lists 9/2014 Initial Issue - Xerox Internal Use Only

PL 7.1 5-10 Xerox WorkCentre 6655 Color Multifunction Printer
PL 8.1 Xerographics
Item Part Description
1 019K12700 Crum Connecter Assy
2 – Xero Deve CRU Assy - Y (initial)
3 – Xero Deve CRU Assy - M (initial)
4 – Xero Deve CRU Assy - C (initial)
5 – Xero Deve CRU Assy - K (initial)
6 042K94440 Cleaner Assy (with 9, 10)
7 – Box Assy - Waste
8 – Harness Assy X-CRUM
9 – Clearer Assy Base
10 – Rod Cleaner
95 604K77584 Kit Xero Deve CRU Assy - Y (Not
Shown)
96 604K77574 Kit Xero Deve CRU Assy - M (Not
Shown)
97 604K77564 Kit Xero Deve CRU Assy - C (Not
Shown)
98 604K77554 Kit Xero Deve CRU Assy - K (Not
Shown)

Initial Issue - Xerox Internal Use Only 9/2014 Parts Lists

Xerox WorkCentre 6655 Color Multifunction Printer 5-11 PL 8.1
PL 9.1 Tray
Item Part Description
1 050K72371 Cassette Assy 550 IOT (with 2-30)
2 – Plate Assy Bottom
3 – Holder Assy Retard CST (with4-7)
4 – Roll Assy Feed
5 – Clutch Friction RTD Z
6 – Shaft Retard CST
7 – Holder Retard CST
8 – Guide Side L 550
9 – Guide Assy Side R 550
10 – Gear Pinion
11 – Cover BTM Lock 550
12 – Rack BTM Lock 550
13 – Gear BTM Lock Pinion
14 – Gear Lever BTM Lock
15 – Lever BTM Lock
16 – Gear 40 BTM Lock
17 – Spring BTM Lock
18 – Spring Lock PB
19 – Actuator Lock PB L
20 – --
21 – Spring BTM UP 550 A4
22 – Holder Spring Retard MSI
23 – Spring Retard CST
24 – Rack Lift Up PB 550
25 – Housing Base 550
26 – Lever Ext End 550
27 – Guide Assy End 550 Opt
28 – Housing End 550
29 – --
30 – Handle CST 550
96 675K47673 Kit Roll Assy Feed (with 4x3P,
instruction) (Not Shown)
97 604K77660 Kit Holder Assy Retard CST (with 3,
instruction) (Not Shown)
99 604K78360 Kit Retard Assy Roll (Not Shown)

Parts Lists 9/2014 Initial Issue - Xerox Internal Use Only

PL 9.1 5-12 Xerox WorkCentre 6655 Color Multifunction Printer
PL 10.1 Option Feeder (1 of 3)
Item Part Description
1 059K87650 Kit Feeder Assy Opt 550 (with 2-16,
18-21, 22)
2 – Cover Side L 550 Opt
3 – --
4 – --
5 – Cover Side R 550 Opt
6 803E10840 Stopper CST
7 – Foot Assy
8 005K83210 Clutch Assy Opt Feed
9 007K18020 Drive Assy Opt 550
10 960K77590 PWBA Feed - SK
11 110K16610 Switch Assy Size 550
12 – --
13 962K91960 Harness Assy FDR Drawer1
14 – Harness Assy C2 Size
15 – Harness Assy C2 Turn
16 – Harness Assy FDR Mot
17 – Screw Joint
18 – Foot Base Front
19 – Foot
20 – Foot Rear
21 – Frame Side L Opt 550
22 059K71760 Feed Assy Opt 550 Main

Initial Issue - Xerox Internal Use Only 9/2014 Parts Lists

Xerox WorkCentre 6655 Color Multifunction Printer 5-13 PL 10.1
PL 10.2 Option Feeder (2 of 3)
Item Part Description
1 059K71760 Feed Assy Opt 550 Main (with 2-6)
2 – Clutch Assy Registration
3 – Roll Asy Feed
4 – Gear Opt Feeder
5 – Bracket Spring Nudger
6 – Feed Sub Assy

Parts Lists 9/2014 Initial Issue - Xerox Internal Use Only

PL 10.2 5-14 Xerox WorkCentre 6655 Color Multifunction Printer
PL 10.3 Option Feeder (3 of 3)
Item Part Description
1 050K66516 Cassette Assy 550 Opt (with 2-30)
2 – Plate Assy Bottom
3 – Holder Assy Retard CST (with 4-7)
4 – Roll Assy Feed
5 – Clutch Friction RTD Z
6 – Shaft Retard CST
7 – Holder Retard CST
8 – Guide Assy Side Left 550
9 – Guide Assy Side Right 550
10 – Gear Pinion
11 – Cover Btm Lock 550
12 – Rack Btm Lock 550
13 – Gear Btm Lock Pinion
14 – Gear Lever Btm Lock
15 – Lever Btm Lock
16 – Gear 40 Btm Lock
17 – Spring Btm Lock
18 – Spring Lock PB
19 – Actuator Lock PB Left
20 – Actuator Size
21 – Spring Btm Up 550 A4
22 – Holder Spring Retard MSI
23 – Spring Retard CST
24 – Rack Lift Up PB 550
25 – Housing Base 550
26 – Lever Ext End 550
27 – Guide Assy End 550 Opt
28 – Housing End 550
29 – Plate Slot Size
30 – Handle CST 550 Opt

Initial Issue - Xerox Internal Use Only 9/2014 Parts Lists

Xerox WorkCentre 6655 Color Multifunction Printer 5-15 PL 10.3
PL 13.1 MSI (1 of 3)
Item Part Description
1 – Bearing Duplex
2 – Roll Assy TA1
3 – Roll Assy TA2
4 – Gear TA1
5 – Spacer TA2
6 – Bearing TA
7 – Gear Turn
8 – Guide MSI Right
9 – Guide MSI Left
10 801K47623 Frame Assembly MSI (P/O PL 13.2
Item 1)
11 050K66574 Tray Assembly MSI Main (P/O PL
13.3 Item 1)
98 604K73890 Kit Roll Assy 1 (with1, 2, 6, 7)
99 604K73900 Kit Roll Assy 2 (with1, 3-7)

Parts Lists 9/2014 Initial Issue - Xerox Internal Use Only

PL 13.1 5-16 Xerox WorkCentre 6655 Color Multifunction Printer
PL 13.2 MSI (2 of 3)
Item Part Description
1 801K47623 Frame Assy MSI (with 2-26)
2 – Frame MSI
3 – Bracket No Paper MSI
4 930W00123 Sensor - Photo Int
5 – Harness Assy MSI
6 – Guide Harness MSI
7 – Spring Feed (ACO)
8 – Gear Feed MSI
9 – Solenoid Feed MSI
10 059K78701 Roll Assy Feed
11 – CAM MSI Left
12 – Roller Core
13 – Holder Feed
14 – Shaft Feed MSI
15 – CAM MSI Right
16 – Guide Support Right
17 – Guide Support Left
18 – Arm Right
19 – Spring NF
20 – ARM Left
21 – Bracket Gear
22 – Follwer Right
23 – Follwer Left
24 – Guide Bottom Right
25 – Side Bottom
26 – Guide Bottom Left
98 604K73910 Kit Roll Assy (with10-15)
99 604K73921 Kit Solenoid Assy (with 7-9)

Initial Issue - Xerox Internal Use Only 9/2014 Parts Lists

Xerox WorkCentre 6655 Color Multifunction Printer 5-17 PL 13.2
PL 13.3 MSI (3 of 3)
Item Part Description
1 050K66574 Tray Assy MSI Main (with 2-19)
2 848K51105 Cover Assy MSI
3 – Spring Damper
4 – Cover MSI Under
5 054K46613 Chute Assy MSI (with 6-19)
6 – Bar MSI Front
7 – Spring No Paper
8 – Actuator No Paper
9 – Roll Pinch MSI
10 – Spring Pinch TA1
11 – Spring Pinch TA2
12 – Chute Retard
13 – Spring Retard MSI
14 – Holder Assy Retard
15 – Plate Assy Bottom
16 – Latch MSI Left
17 – Latch MSI Right
18 – Spring Latch MSI
19 – Chute MSI
20 – Plate Assy Retard MSI
98 604K74441 Kit Roll Assy Separater (with13, 14,
20)
99 604K73940 Kit Roll Pinch (with 9-11)

Parts Lists 9/2014 Initial Issue - Xerox Internal Use Only

PL 13.3 5-18 Xerox WorkCentre 6655 Color Multifunction Printer
PL 14.1 Duplex
Item Part Description
1 054K46665 Chute Assy Duplex
2 604K77540 2nd BTR Assy CRU
3 – Harness Assy Rear SW (I/L SW)
4 868E68951 Bracket Hinge Rear
5 – --
6 – Plate Hinge Right
7 – Shaft Hinge Left

Initial Issue - Xerox Internal Use Only 9/2014 Parts Lists

Xerox WorkCentre 6655 Color Multifunction Printer 5-19 PL 14.1
PL 15.1 Registration/Feeder (1 of 2)
Item Part Description
1 – --
2 – Chute DUP Upper
3 – Chute DUP Lower A
4 – Chute Regi Lower
5 – Chute Regi Opt 550
6 054K46650 Chute Assy Upper IBT
7 – --
8 – Clutch Assy Registration
9 – Guide Tray Left
10 803E10840 Stopper CST
11 – Gear Idle 28
12 – Gear Idle 25
13 – Cover Gear MSI
14 – Guide Tray Right
15 – --
16 110K16610 Switch Assy Size
17 – Bracket SW Size
18 054K47993 Chute Assy Regi
98 054K46641 Chute DUP Assy (with2, 3)
99 604K77750 Kit Chute Regi High Assy DN
(with2-5, 18)

Parts Lists 9/2014 Initial Issue - Xerox Internal Use Only

PL 15.1 5-20 Xerox WorkCentre 6655 Color Multifunction Printer
PL 15.2 Registration/Feeder (2 of 2)
Item Part Description
1 054K47993 Chute Assy Regi (with2-9)
2 – Bearing Regi R
3 – Cover DUP Gear
4 – Bearing
5 121K48680 Clutch Assy DUP
6 005K83210 Clutch Assy Opt Feed
7 – Roll Assy Feed
8 – Harness Assy Regi
9 – Chute Sub Assy Regi
10 120E33761 Actuator No Paper

Initial Issue - Xerox Internal Use Only 9/2014 Parts Lists

Xerox WorkCentre 6655 Color Multifunction Printer 5-21 PL 15.2
PL 17.1 Exit
Item Part Description
1 054K49232 Kit Assy Exit (with2-18, 20, 22)
2 – Plate Earth Exit B
3 – Plate Earth Exit A
4 – Actuator Exit B
5 – Spring Actuator B
6 – Actuator Exit A
7 – Spring Actuator A
8 – Chute Exit Upper S3
9 – Eliminator Exit
10 – Actuator Full Stack
11 930W00123 Sensor - Photo Int
12 – Chute Exit Lower S3
13 – Bearing - Exit
14 – Roll Assy Exit
15 – Gear Exit
16 – Roll Pinch
17 – Spring - Pinch
18 – Harness Assy Exit SNR
19 – --
20 – Cover Exit Tray
21 007K18766 Drive Assy Exit DN
– – Chute Flapper Exit
22 – Chute Flapper Exit
23 – Harness Assy SNR

Parts Lists 9/2014 Initial Issue - Xerox Internal Use Only

PL 17.1 5-22 Xerox WorkCentre 6655 Color Multifunction Printer
PL 18.1 Electrical (1 of 4)
Item Part Description
1 – Guide Harness Top
2 – Guide Harness Exit
3 – Cover Harness Top
4 – Guide Harness Top L
5 – Guide Harness Erase CRM
6 – Housing Assy Charge Deve
7 – Housing Assy Charge Deve Out
8 – Guide Harness Video
9 – Guide Harness L
10 – Plate MCU
11 960K74660 PWBA MCU
12 105K26095 PWBA HVPS XD
13 – Plate Earth HV
14 – Housing Assembly Ground Fusing
15 – Varistor, NVD10UCD1100
16 105K26103 PWBA HVPS Transfer
17 – Guide Harness PH
18 – Housing Assembly Wire Transfer IN
19 913W12104 Feeder Drawer 1
20 – PWBA EEPROM XPRO
21 – Power Cord 110V
22 930W00123 Sensor-photo Int
23 – Harness Assembly BTR
24 – --
99 848K69221 Kit Varistor Assembly (with 14, 15)

Initial Issue - Xerox Internal Use Only 9/2014 Parts Lists

Xerox WorkCentre 6655 Color Multifunction Printer 5-23 PL 18.1
PL 18.2 Electrical (2 of 4)
Item Part Description
1 – Plate Window IIT MCU
2 960K74900 PWBA Assembly IIT MCU
3 – Box IIT MCU
4 604K90931 Hard Disk
5 – Bracket HDD
6 604K91840 PWBA ESS AIO
7 – Plate Assembly ESS FAX
8 – Box ESS
9 133K27570 DDR3 DIMM 4GB (Module
Assembly)
10 604K91860 SD Card SIK 2GB
11 084K42802 PWBA Fax
12 – Bracket Fax XC AN
13 117E38790 Cable Fax USB
14 – Bracket Front USB
15 952K16680 Cable Assembly Front USB
16 127E86620 ESS Fan
17 – Duct Fan ESS
18 – EEPROM (not spared)

18

Parts Lists 9/2014 Initial Issue - Xerox Internal Use Only

PL 18.2 5-24 Xerox WorkCentre 6655 Color Multifunction Printer
PL 18.3 Electrical (3 of 4)
Item Part Description
1 – Cap LV Bottom
2 105K30562 LVPS 110V
105K30572 LVPS 220V
3 – Guide Harness Right
4 – Holder Drawer
5 – Cover Wire Trans
6 – Duct LVPS Upper
7 – Harness Assy AC Inlet (p/o 99)
8 – Guide Harness Inlet (p/o 99)
9 604K90550 Stapler Assembly
10 – Harness Assy Stplv
11 – Bracket - Stapler
12 105K31931 Sub LVPS STP 110V
105K31941 Sub LVPS STP 220V
13 -- Harness Assy STP Intlk
99 604K92020 Harness Assy Inlet (with 7, 8)

Initial Issue - Xerox Internal Use Only 9/2014 Parts Lists

Xerox WorkCentre 6655 Color Multifunction Printer 5-25 PL 18.3
PL 18.4 Electrical (4 of 4)
Item Part Description
1 – --
2 – Harness Assembly Drive
3 – Harness Assembly Main
4 – --
5 – Harness Assembly Top AIO
6 – Harness Assembly HVPS
7 – FFC MCU - HVPS
8 – Harness Assembly Cont IIT
9 – Harness Assembly IIT Video
10 – Harness Assembly Cont IIT

Parts Lists 9/2014 Initial Issue - Xerox Internal Use Only

PL 18.4 5-26 Xerox WorkCentre 6655 Color Multifunction Printer
PL 19.1 Cover (1 of 2)
Item Part Description
1 848K90362 Cover Assembly Top (With 2-9)
2 – Holder Link Trans
3 – Link Trans 1
4 – Link Trans 2
5 – Cover Top
6 – Spring Actuator Interlink
7 – Actuator Turn Interlink
8 – Holder Actuator Interlink
9 – Cover Tray Bottom
10 – Cover Side Left In
11 – Cover Side Right In
12 – Cover Bracket IIT
13 – Bracket Interlock Side Right
14 – Actuator Swing Interlock
15 – Spring WC IL
16 – Harness Assembly Door I/L
17 – Cover Side Right Door
18 – Strap Cover Side Right
19 – Cover Side Right
20 848K90230 Cover Assembly Front (with 21-25)
21 – Strap Front
22 – Cover Front Exit
23 – Cover Front Top
24 – Plate Logo
25 – Cover Front Under
26 – Cover Side Right Door Upper
27 – Cover Side Right Front
28 – Staple Box
29 – Film Stapler
30 – --
31 – Cover Side Right Stapler
32 – Cover Side Right Stapler Door
96 604K92050 Kit Cover Assembly Door (with 17,
18, 26)
97 848K90341 Kit Cover Assembly Right (with 19,
27)
98 110K16891 Kit Switch Assembly Interlock Right
(with 13, 15, 16)
99 604K92070 Kit Cover Assembly Stapler (with
31, 32)

Initial Issue - Xerox Internal Use Only 9/2014 Parts Lists

Xerox WorkCentre 6655 Color Multifunction Printer 5-27 PL 19.1
PL 19.2 Cover (1 of 2)
Item Part Description
1 – Cover Assembly Rear
2 – Link Rear Cover
3 – Cover Side Left IF
4 822E07101 Cover Top Exit
5 – Cover Side Left MCU
6 – Cover Side Left
98 604K92040 Kit Cover Assy Rear (with1, 2)
99 604K92060 Kit Cover Assy Left (with 5, 6)

Parts Lists 9/2014 Initial Issue - Xerox Internal Use Only

PL 19.2 5-28 Xerox WorkCentre 6655 Color Multifunction Printer
PL 51.1 IIT/DADF
Item Part Description
1 059K81533 DADF Assembly (with 2-5, 9-11,
17-20)
2 – Cover Top ADF
3 – Roller Assembly ADF
4 – Separation Pad
5 – ADF Frame Assembly
7 – --
8 – --
9 003K89860 Hinge Assembly-right
10 003K89140 Hinge Assembly-left
11 050K71060 ADF Tray Assembly
12 – --
13 – --
14 062K26470 IIT Assembly
15 – --
16 – --
17 – Stopper Plate L
18 – Stopper Plate R
19 – PF 1 Idle Spring
20 – Idle Roller Assembly
97 604K85850 Kit DADF Pick Up Module (with 3,
4)
98 604K85860 DADF Assembly Top Cover (with 2,
17-20)
99 – Kit DADF Top Cover (with 97, 98)

Initial Issue - Xerox Internal Use Only 9/2014 Parts Lists

Xerox WorkCentre 6655 Color Multifunction Printer 5-29 PL 51.1
Parts Lists 9/2014 Initial Issue - Xerox Internal Use Only
PL 51.1 5-30 Xerox WorkCentre 6655 Color Multifunction Printer
 6 General Procedures and Diagnostics
General Procedures dC312 Network Echo Test .............................................................................................. 6-54
GP 1 Service Diagnostics Entry and Exit ........................................................................ 6-3 dC330 Component Control.............................................................................................. 6-55
GP 2 Fault Codes and History Logs................................................................................ 6-4 dC361 NVM Save and Restore ....................................................................................... 6-59
GP 3 Customer Administration Tools.............................................................................. 6-6 dC612 Print Test Pattern................................................................................................. 6-60
GP 4 How to Switch Off or Switch On the Printer ........................................................... 6-9 dC919 Color Balance Adjustment ................................................................................... 6-60
GP 5 Service Copy (Tools) Mode ................................................................................... 6-10 dC945 IIT Calibration ...................................................................................................... 6-61
GP 6 Electrostatic Discharge Prevention ........................................................................ 6-11 dC1033 Slave Initialization .............................................................................................. 6-61
GP 7 Machine Specifications .......................................................................................... 6-11
GP 8 General Disassembly Precautions ......................................................................... 6-14
Change Tags
GP 9 Installing System Software..................................................................................... 6-15 Change Tags................................................................................................................... 6-63
GP 10 How to Check a Motor ......................................................................................... 6-18
GP 11 How to Check a Sensor ....................................................................................... 6-19
GP 12 How to Check a Solenoid or Clutch ..................................................................... 6-19
GP 13 How to Check a Switch ........................................................................................ 6-20
GP 14 Cloning Network Configurations .......................................................................... 6-20
GP 15 Removed ............................................................................................................. 6-23
GP 16 Separate System Modules ................................................................................... 6-24
GP 17 External Fax Line Test ......................................................................................... 6-25
GP 18 Printing Reports ................................................................................................... 6-25
GP 19 Intermittent or Noise Problem .............................................................................. 6-26
GP 20 How to Safely Lift or Move the Printer ................................................................. 6-27
GP 21 Machine Lubrication............................................................................................. 6-28
GP 22 Installation Space Requirements ......................................................................... 6-29
GP 23 First Print Output Time ......................................................................................... 6-31
GP 24 Restriction of Hazardous Substances (RoHS)..................................................... 6-31
GP 25 Remote Control Panel.......................................................................................... 6-32
GP 26 Media Specifications ............................................................................................ 6-33
GP 27 Environmental Data ............................................................................................. 6-34
GP 28 Toner CRUM Conversion..................................................................................... 6-35
GP 29 How to Check a Dispenser Motor ........................................................................ 6-36
GP 30 IP (ESS) Specifications........................................................................................ 6-37
GP 31 IIT Specifications.................................................................................................. 6-40
GP 32 Fax Specifications................................................................................................ 6-41
GP 33 Interior and Exterior Cleaning .............................................................................. 6-42

Diagnostic Utilities
dC104 Usage Counters................................................................................................... 6-45
dC108 Software Version ................................................................................................. 6-45
dC120 Fault Counters ..................................................................................................... 6-46
dC122 Fault History ........................................................................................................ 6-46
dC131 NVM Read/Write.................................................................................................. 6-47
dC132 Serial Number Restore ........................................................................................ 6-49
dC135 CRU/HFSI Status ................................................................................................ 6-50
dC140 Analog Monitor .................................................................................................... 6-51
dC188 Service Mode Exit................................................................................................ 6-52
dC301 NVM Initialization................................................................................................. 6-52
dC305 UI Test ................................................................................................................. 6-54

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-1
General Procedures 9/2014 Initial Issue - Xerox Internal Use Only
6-2 Xerox WorkCentre 6655 Color Multifunction Printer
GP 1 Service Diagnostics Entry and Exit
Purpose
This procedure describes the following items:
• How to enter Service Diagnostics
• The Service Diagnostics screen.
• How to exit Service Diagnostics.

NOTE: When Service Diagnostic mode is entered, all existing print jobs are suspended. All
scheduled jobs are held in a queue until Service Diagnostics exits.

To enter Service Diagnostics remotely, refer to GP 25

Description
The WorkCentre 6655 has built-in diagnostics that allow access to sensors, clutches, sole-
noids, motors, printer status, and some NVRAM access. Using these tests, service technicians
should be able to diagnose problems quickly and isolate which component or assembly needs
replacement.

The printer’s operating system monitors sensors located throughout the print engine and Figure 1 Service Diagnostics Interface
attached options. Sensors are used to monitor media handling and mechanical activity along
the entire media path. As a sheet travels along the paper path, sensors change state tempo- Service Diagnostics tabs
rarily to indicate the sheet’s presence. If the pattern of sensor state changes differs from the When the Service Diagnostic screen is displayed, these tabs are available: Service Info, Diag-
expected timing for a particular media size and path, the sensor where the timing difference nostics, Adjustments, Maintenance, and Call Closeout. Touch a tab to open that group.
occurs identifies the error to report. However, having the error message information does not Touch a dC routine to launch it.
necessarily pinpoint the problem. Sensor signals locate where, but often cannot identify why.
Motors, belts, gears, solenoids, and numerous other parts are involved in media transport. The • Service Info
Service Diagnostics’ suite of tests and utilities are the best tools available to pinpoint the root This is the default tab for Service Diagnostics. It contains the following:
cause behind the reported error. General information (serial #, product code, image count, s/w version, IP address).
dC104, dC108, dC120, dC122 and dC135
If confronted with an error that requires more than a cursory investigation to clear or when
directed by a troubleshooting procedure, use Service Diagnostics to exercise selected sub- • Diagnostics
assemblies or parts in the vicinity of the reported error. Diagnostic tests are controlled from the This tab contains:
Control Panel. dC140, dC312, dC330 and dC612.
• Adjustments
Procedure This tab contains:
To enter Service Diagnostics: dC131, dC301, dC361, dC919, dC945, and dC1033.
1. Press and hold 0 (zero) for at least 5 seconds. • Maintenance
2. While holding 0 (zero), press and release the Start button. This tab contains:
3. Enter 6789 on the login screen and touch Enter. dC120, dC122, dC132, and dC135.
4. The Service Info tab is displayed upon entering Service Diagnostics (Figure 1). • Call Closeout
This tab allows you to choose whether the printer reboots when you exit diagnostic
mode, and whether fault counters are cleared. Touch Reset Counters? to clear fault
history.
To exit Service Diagnostics:
1. Use Call Closeout to exit diagnostics mode. It is recommended that following diagnostic
testing, you reboot the printer to return it to correct operation.
2. Allow diagnostics to time-out.

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-3 GP 1
GP 2 Fault Codes and History Logs Table 1 Function and Fault Code Prefixes

Purpose Chain Code Function Chain Code Function

To describe access to fault history, explain fault code structure, and define error messages and 305 DADF 370 I/F IOT
codes generated by the printer. 310 Fusing 371 Tray 1
312 Media Tray 372 Tray 2
Description 316 Network Functions 375 Bypass Tray
The printer tracks and reports errors in a number of ways. The two types of error reporting dis- 319 Hard Drive / Image Data 377 IOT Jam
cussed here include:
320 Fax 391 Drum Cartridge
• Error messages and fault codes displayed on the Control Panel (Figure 1).
322 Network Faults 392 ATC / Environmental
• Error and fault code history stored in the printer.
341 IOT NVM 393 Toner Dispense
342 NOHAD / Fan / Drive 394 Transfer Roller
345 Communications 395 Software Upgrade
346 IOT HVPS

Accessing Fault History

Fault History is available in two locations:
• Machine Status Menu
• Service Diagnostics

NOTE: Fault history can be viewed on the Control Panel without logging in as an administrator.

Accessing Fault History from Machine Status Menu

1. Press the Machine Status button.
2. Touch the Active Messages tab shown in Figure 2.
Current fault and status messages are displayed. You can select how to filter the mes-
sages displayed with the Faults and Alerts pull-down. Highlight a status message to view
details.

Figure 1 Home Screen Fault Code Display

Fault history lists the most recent printer fault codes with a time and date stamp. Use the fault
code to determine the appropriate troubleshooting procedure. To access fault history files from
the Control Panel, refer to Accessing Fault History.

NOTE: Fault codes may appear containing different pre-fix (i.e. 089-XXX vs. 389-XXX) on the
Services Home Menu and Fault History.

Function and Fault Codes

Refer to Table 1 for a list of Fault code prefixes.

Table 1 Function and Fault Code Prefixes

Chain Code Function Chain Code Function
302 System Controller/UI 361 Laser Unit Figure 2 Access and Filter Fault Details
303 Machine Run Control 362 Scanning

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 2 6-4 Xerox WorkCentre 6655 Color Multifunction Printer
3. Touch Fault History to view a listing of recorded faults as shown in Figure 3.

Figure 3 Fault History Listing

Figure 5 Access Fault Details

Accessing Fault History in Service Diagnostics
1. Enter Service Diagnostics. Accessing Machine Status/Tools Menu as Administrator
2. Touch Service Info. 1. Press Log In/ Out.
3. Touch dC122 Fault History to display the listing as shown in Figure 4. 2. Enter the default user name admin.
3. Touch Next.
4. Enter the default password 1111.
5. Touch Done.
6. Press the Machine Status button to view the screen shown in Figure 6.
7. Touch Tools to access various printer settings.

Figure 4 Service Diagnostics Fault History Interface

4. Select the desired fault, then select Details as shown in Figure 5 to view the fault detail.

Figure 6 Machine Status Interface

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-5 GP 2
Print Process Traces GP 3 Customer Administration Tools
Printers equipped with a Hard Drive record system activity, To retrieve printer’s activity, use this Purpose
procedure:
To gain access to customer administration tools.
1. Insert a thumbdrive into the front USB port.
2. Press the Menu button. How to Enter Customer Administrator Tools
3. Select Information and press OK.
Perform the following:
4. Select Firmware Versions and press OK.
1. Select login / out on the key pad or select guest on the UI.
5. Wait approximately 30 seconds as the traces are transferred to the thumbdrive.
2. Enter User Name ‘admin’ (case sensitive).
3. Select Next.
4. Enter the Password ‘1111’ (default setting).
5. Select Done.
6. Select Machine Status key, to access the customer administration screen.
When the machine is password protected use Service Copy Mode (GP 5) to access device,
network settings. Perform the following:

NOTE: Not all Admin settings are available while logged in as CSE.

1. Press and hold the # key, * key and the Stop key.
2. Enter the passcode 2732.
3. Select Enter.
4. Select Machine Status key then Tools tab. To access the customer administration screen.

NOTE: After entering customer administration tools, all existing copy jobs are cancelled. The
network controller will stop accepting jobs and a ‘Offline’ screen message is displayed. When
exiting service mode an ‘Online’ screen message is displayed.

The tools menu map is also available in the information pages. Select Machine Status /
Machine Information / Information Pages and select the Tools Menu Map.

The customer administration Tools menu contains the following features:

• Device Setting - Table 1

• Service Setting - Table 2
• Network Setting - Table 3
• Accounting Setting - Table 4
• Security Setting - Table 5
• Troubleshooting - Table 6

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 2, GP 3 6-6 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 1 Device Settings
Feature Feature options Selection
Table 1 Device Settings
Quick Setup Home IP Address / Contact Num- -
Feature Feature options Selection bers / Fax Setup
General Energy Saver Intelligent Ready Display Brightness Brighter / Darker -
Job Activated Configuration / Information Pages - Administrator Only
Scheduled
Open to All Users
Energy Saver Timers
Print Configuration at Power
Date and Time Time Zone (GMT Offset) OnPrint Now
Date
Reset UI to Factory Settings - Cancel / Restart -
Time
Interrupt Printing Enablement - Enable / Disable
Languages / Keyboard Display Languages
Display Device Information Device Parameters Show / Hide
Selection Keyboard Layout
Custom Keyboard Button Enter Button Label
Xerox Customer Support Phone number
Entry Screen Defaults Screen Defaults Table 2 Service Settings
When Originals Detected
Feature Feature options Selection
Measurements Units
Numeric Separator Service Registration Service Home Enable All / Disable All
Paper Size Preference Inches / Metric Device Address Book Manage Create Address Book Records
Import
Audio Tones Fault Tone
Conflict Tone Export
Export Sample
Selection Tone
Copy Service Settings Feature Defaults Reset / Save
Feature installation Enter Feature Installation key
Color Preset Screen On / Off
Revert to Previous Set- Cancel / Restart
tings Edge Erase Presets Undo / Reset / Save
Paper Management Paper Type and Color Plain / Recycled / Colour Image Shift Presets Undo / Reset / Save
Paper Substitution Enable / Disable Reduce/Enlarge Presets Undo / Reset / Save
Paper Size Preference Inches / Metric Reading Order Options Scan Order
Tray Settings Edit settings Print Order

Tray Contents Paper Size / Type Auto Image Rotation When Auto R/E Selected
When Auto Paper Selected
Timers Auto Resume Timer Auto Resume / Wait for User
ID Card Copy Service Enablement Enable / Disable
Delete Held Jobs After Enable / Disable
Side 1 / 2 Shared Defaults Reduction / Supply
System Timeout Enable / Disable
Side 1 Defaults Type / Contrast / Background
Input Auto Color Detection Scan from Document Glass /
Side 2 Defaults Type / Contrast / Background
Scan from Document Feeder
Photo / Text Settings Recognition Reduce / Enlarge Presets Percentage

Output Contention Management Priority / First In, First Out

Within Job Offsetting Enable / Disable
Supplies Enter Supplies Activation Enter Activation Code
Enter Plan Conversion Enter Plan Conversion
Low Supply Warning Set Supply Warning
Clear Low Supply Warning Select Warnings to Hide
Supply Counter Reset Reset CRU Life Count
Device Software Upgrade Allow Upgrade Enable / Disable

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-7 GP 3
 Table 2 Service Settings Table 3 Network Settings
Feature Feature options Selection Feature Feature Options
Embedded Fax Settings Fax Setup Enable / Disable Network Connectivity Wired / Wireless / Non-Networked
Feature Defaults - TCP/IP Settings TCP/IP Enablement
Fax Country Setting - Dynamic Addressing
IP Address / Host Name
Line 1 Setup -
Subnet and Gateway
Incoming Fax Defaults Auto Answer Delay DNS Configuration
Paper Settings
Advanced Settings Ethernet Physical Media
Ring Volume
HTTP Settings
Secure Receive
802.1X
Default Output Options
Advanced Capabilities Network Logs Basic
Enhanced
Transmission Defaults Automatic Redial Setup
Download Basic Log File
Automatic Resend
Audio Line Monitor USB Settings USB Connection Mode (Software Tools or Direct Print)
Send Header Text
Batch Send
Mailbox and Polling Poli- Received Documents
cies Stored Documents Table 4 Accounting Settings
Mailbox Setup - Feature Feature Options
Setup Fax Reports Activity Report Accounting Mode None
Confirmation Report Xerox Standard Accounting
Broadcast and Multipoll Network Accounting
Report Copy Activity Report Enable / Disable
Print Fax Reports Activity Report
Protocol Report
Fax Address Book Report
Options Report
Pending Jobs Report Table 5 Security Settings
Print Now Feature Feature Options Selection
Fax Passcode Length Set Length USB Port Security Rear and Side Ports Enable / Disable
Job Sheets Banner Sheets Print Banner Sheet Yes / No Audit Log - Download Log
Print Driver Override Yes / No Authorization Job Deletion Available using CWIS
Banner Sheet Identification
Image Overwrite Security Job Overwrite Disable / Enable
Output Error Sheets Enable / Disable
Disk Overwrite Never
Paper Type and Color Paper Type
Daily
Paper Color Weekly
Weblet Settings Weblet Install Policy Allow / Do Not Allow Monthly
Weblet Management Add / Remove Disk Overwrite Now Overwrite Mode
Service Plan Current / Change Plan Enter Authorization Code Confirmation Report
Overwrite Now
Change Admin Password - Enter New Password
IPSec - Enable from CWIS
Table 3 Network Settings Valid Recipients Email / Address Book Allow / Limit
Feature Feature Options
Online / Offline Online and Offline

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 3 6-8 Xerox WorkCentre 6655 Color Multifunction Printer
 GP 4 How to Switch Off or Switch On the Printer
Table 6 Troubleshooting Purpose
Provide instruction on how to properly switch printer power On or Off. The printer is equipped
Feature Feature options Selection
with both an on/off switch and a Power button on the Control Panel. Normally the Power button
Support Pages Repeating Defects Page Print is used to power the printer On and Off. However, when service procedures require you to
Total Pages (A4) cycle system power or perform procedures that would expose you to the potential for electrical
Total Pages (Letter) shock, use the shutdown procedure below.
50% Fill Pages
IOT PQ Half Tone Inspection Chart WARNING
(A4)
Switch off the electricity to the machine. Disconnect the power cord from the customer
IOT PQ Half Tone Inspection Chart
supply while performing tasks that do not need electricity. Electricity can cause death or
(Letter)
injury. Moving parts can cause injury.
Pitch Chart (A4)
Pitch Chart (Letter) Power Down Procedure
Color Registration - Close / Start CAUTION
Calibration Print Calibration Cancel / Next Do not disconnect the Power Cord or interrupt the electricity supply before power down is com-
Cancel / Next plete. Data and software can become corrupted.
Cancel / Approve 1. Press Power on the Control Panel. A confirmation window will open.
Reset Print Calibration Cancel / Next
NOTE: If the machine is in power save mode, the machine will exit to Ready To Scan
Xerographic Module Cleaning Clean the Drum Begin
before commencing the switch off procedure. If the machine is in software upgrade mode,
Resets Software Reset All Software a message is displayed to warn against switching off the machine.
Network Software
Copy Software NOTE: If the Control Panel is unavailable, the power down request cannot be confirmed.
Reset The printer powers down automatically after 60 seconds.
Supply Counter Reset Fuser 2. Confirm by selecting Power Down.
Transfer Unit Kit
Reset Counter NOTE: If Power is pressed again before either confirm has been selected or 60 seconds
has elapsed, power off is cancelled. The printer returns to normal operation.
Network Echo Test Protocol
Start Test 3. When a standard power off has been initiated:
Fax Fax Protocol Report Protocol Report • Control Panel screen goes blank (Black screen).
Print Now
• Power Saver LED blinks for approximately 25 seconds.
• Go off line and stop receiving jobs.

NOTE: The printer will attempt to print the current sheet and send all sheets in the
paper path to the output tray.

• Stop processing any remaining jobs in the print queue.

• Send the scan carriage assembly to the home position.
4. When the printer has entered Power Saver mode, switch the on/off switch to the Off posi-
tion and remove the Power Cord.
5. Wait at least 1 minute following removal of the Power Cord to allow the power supplies to
completely discharge before beginning any service procedure.
Switch On Procedure
1. After a power down, wait a minimum of one minute before the printer is switched on.
2. After a service call, ensure that all service tools are removed from the printer.
3. Connect the Power Cord from the AC supply outlet to the printer.
4. Switch the on/off switch to the On position.

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-9 GP 3, GP 4
5. Press the Power button on the Control panel. The following occurs: GP 5 Service Copy (Tools) Mode
• The Interrupt button blinks during POST testing. POST checks that the hardware
The CSE Service Copy (Tools) mode provides enhanced access to printer settings without tak-
resources are available to run the operating system. If a POST fault is detected, the
ing the printer off-line. Service Copy mode allows you to perform a number of checks and run
machine is prevented from booting.
copies without compromising customer security settings. This mode is available if the adminis-
• The Interrupt button stops blinking as the operating system begins to load. A trator account is unavailable.
progress bar and software version information is displayed during loading.
• If enabled, a Configuration Report is printed. Procedure
• The Services home screen is displayed. 1. Press and hold the 0 button for approximately 5 seconds then simultaneously press the
6. The machine is ready to print. Start button on the UI. Release both buttons after a few seconds.
7. If the machine switches on, but the Control Panel is blank, go to the OF 2 Control Panel 2. On the Service Diagnostics Login screen, enter 2732, then select Enter.
Touch Screen Failure RAP. 3. CSE appears in the user name area of the Services home screen.
Service Mode 4. Press Machine Status to access the Tools tab. The Tools available in this mode are a sub-
The machine can be switched on directly into Service Mode, refer to GP 1. set of those available in Administrator mode.

NOTE: CSE Service Copy mode will time-out and return to the Guest account after a cou-
Operational Modes ple minutes of inactivity.
Operational modes are listed in Table 1. Power activity during each operation mode is listed in
Table 2.

Table 1 Printer Operational Modes

Mode State
Running In operation (print, scan, data receiving)
Ready Ready to receive data
Light Sleep Power reduced below Ready mode
Deep Sleep Power reduced below Light Sleep mode
Soft Off Control Panel Power button Off, Power switch On

Table 2 Power Activity by Operational Mode

- Running Ready Light Sleep Deep Sleep Soft Off
Fuser Operating Standby Off Off Off
Development On Off Off Off Off
Exposure On Off Off Off Off
IP Fan On (high) On (low) Off Off Off
Main Fan On (high) On (low) On (low) Off Off
3.3V On On On Off Off
5V On On On On to IP On IIT to IP
24V On On On On MCU to IP Off

NOTE: Refer to Electrical Specifications in GP 7 for further information.

Energy Saver options are set in the Customer Administration Tools menu listed in GP 3.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 4, GP 5 6-10 Xerox WorkCentre 6655 Color Multifunction Printer
GP 6 Electrostatic Discharge Prevention GP 7 Machine Specifications
Some semiconductor components, and the sub-assemblies that contain them, are vulnerable Functional Specifications
to damage by Electrostatic Discharge (ESD). These techniques reduce the occurrence of com- Resolution
ponent damage caused by static electricity.
Line Density in Fast Scan Direction: 600 dots/25.4 mm
Be sure the power is Off and observe all other safety precautions.
Line Density in Slow Scan Direction: 600 dots/25.4 mm (fixed)
• Immediately before handling any semiconductor components, drain the electrostatic
Operation Mode
charge from your body. This can be accomplished by touching an earth ground source or
by wearing a wrist strap device connected to an earth ground source. Wearing a wrist Power-Off State
strap will also prevent accumulation of additional bodily static charges. Be sure to remove
the wrist strap before applying power to the unit under test to avoid potential shock. The power switch is off and no power is supplied. The machine does not operate
• After re a static sensitive assembly from its anti-static bag, replace it on a grounded con-
Ready (Standby) Mode
ductive surface. If the anti-static bag is conductive, you may ground the bag and use it as
a conductive surface.
When the system starts up by power-on, it shifts from the power-off state to the Ready mode.
• Do not use freon-propelled chemicals. These can generate electrical charges sufficient to
damage some devices. After pressing “Power Saver button” on the operator panel, the machine enters the Energy
• Do not remove a replacement component or electrical sub-assembly from its protective Saver Mode to save more power consumption
package until you are ready to install it.
• Immediately before removing the protective material from the leads of a replacement Running Mode
device, touch the protective material to the chassis or circuit assembly into which the There are the Print mode, Scan mode, and FAX communication mode in which the IOT, IIT,
device will be installed. and FAX communication operate respectively.
• Minimize body motions when handling unpacked replacement devices. Motion such as
your clothes brushing together, or lifting a foot from a carpeted floor can generate enough Print Mode
static electricity to damage an electro-statically sensitive device.
• Handle IC’s carefully to avoid bending pins. In this mode, the IOT is operating for printing and report printing.
• Pay attention to the direction of parts when mounting or inserting them on circuit boards.
Scan Mode

In this mode, the IIT is operating for copy scanning, local scanning, network scanning, and FAX
scanning.

FAX Communication Mode

In this mode, FAX sending/receiving is in progress.

Energy Saver (Sleep) Mode

When no jobs are executed for a certain period of time, the machine enters Energy Saver
mode to reduce electricity consumption. The user can set the time that the printer spends idle
in Ready mode before it shifts to Energy Saver mode for a period of 1 to 60 minutes. The fac-
tory default is 5 minutes for the MFP, and 10 minutes for the SFP.

After one minute in Energy Saver mode, the printer automatically enters Deep Sleep mode for
a further reduction in power consumption.

The following conditions trigger the printer to exit Energy Saver or Deep Sleep mode and
return to Ready mode:
• Pressing “Energy Saver button” on the operator panel
• Receiving a print job

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-11 GP 6, GP 7
• Receiving a FAX job FPOT (First Print Output Time) and FCOT (First Copy Output Time)
• Receiving Direct Fax job See Table 3 for the time required for the first sheet of paper to exit the printer after clicking OK
• Report printing directions from CWIS in the driver (FPOT) and time required for paper to exit after pressing Start for copy (FCOT).
• Start sending or polling data at the communication, if start time specified by the operator
Table 3 First Print/Copy Output Time
Machine State
FPOT
See Table 1 for running modes during machine states:
Color FPOT (Power Saver/ FPOT
Mode (Ready) Sleep) (from cold) FCOT
Table 1 Running Modes During Machine States
B/W As fast as 10.5 sec As fast as 23.4 sec 26.0 sec Platen: 14.2 sec
Feature Initializing Running Ready Sleep Deep Sleep
DADF simplex:
Exposure Working dur- Working Rest 15.0 sec
Developer and ing calibration Working Rest Color As fast as 10.8 sec As fast as 23.4 sec 26.0 sec Platen: 15.6 sec
transfer DADF simplex:
Fusing Unit Rest Working Standby Temp Rest 18.9 sec
Cooling fan Rest Working Working (half) Rest
IIT Working Rest Input Capacities
MCU Working Rest See Table 4 for media tray capacities:
Operation Working Power Saver button LED
panel Only Table 4 Input Capacities
Controller Working Input Capacity
Interface Port a Working Cassette Tray 550 sheets or under 59.4 mm of standard paper
a. Interface Port: USB Port (Type B), Ethernet Port Bypass Tray 150 sheets or under 15 mm of standard paper

Warm-Up Time Output Properties

See Table 2 for warm-up times for various events: See Table 5 for output tray capacities:

Table 2 Warm-Up Time Table 5 Output Properties

Event State Transition Warm-up Time Condition Paper delivery system: Face up deliver
Paper delivery capacity: 250 sheets (Letter/A4 standard paper)
Power On Power off to Ready As few a 12 seconds 20degC/60%RH, Rated volt-
age. Power On after season- Delivery paper size / mass: All paper sizes applicable to this printer
ing for 3 hours or more. Full stack detection: There is a sensor to detect a full stack.
Wake up from Sleep to Ready As few as 3 seconds 20degC/60%RH, Rated volt-
Sleep mode age. Plain paper job in Deep Paper
Wake up from Deep sleep to Sleep Mode shift and 1 hour. See the following tables for supported paper types, weights, and sizes:
Deep Sleep mode Ready
• Supported Paper Types and Weights - Table 6
• Supported Standard Paper Sizes - Table 7
• Supported Types and Weights for Automatic 2-Sided Printing - Table 8
• Supported Custom Paper Sizes - Table 9

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 7 6-12 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 8 Supported Paper Types and Weights for Automatic 2-Sided Printing
Paper Types Weights
Table 6 Supported Paper Types and Weights
Plain 75-10s5 g/m2
Tray Paper Types Weights Hole Punched
All Trays Recycled 60-105 g/m2 (16-28 lb) Pre-Printed
Custom Letterhead
Plain Bond
75-105 g/m2 (20-28 lb)
Hole Punched Lightweight Cardstock 106-163 g/m2
Pre-Printed Lightweight Glossy Cardstock
Bond
Letterhead
Lightweight Cardstock 106-163 g/m2 (28-43 lb)
Lightweight Glossy Cardstock Table 9 Supported Custom Paper Sizes
Cardstock 164-220 g/m2 (44-58 lb) Tray Size
Glossy Cardstock
All Trays Width: 148.0-215.9 mm (5.8-8.5")
Bypass Tray Labels
Automatic 2-Sided Printing Length: 210-355.6 mm (8.3-14")
Envelope
Duplex Automatic Document Feeder
Bypass Tray Width: 76.2-215.9 mm (3-8.5")
Length: 127-355.6 mm (5-14")

Table 7 Supported Standard Paper Sizes

Electrical Specifications
Tray European Standard Sizes North American Standard Sizes
Table 10 lists the printer’s electrical requirements.
All A4 (210 x 297 mm, 8.3 x 11.7") Legal (216 x 356 mm, 8.5 x 14")
Trays B5 (176 x 250 mm, 6.9 x 9.8") Folio (216 x 330 mm, 8.5 x 13") Table 10 Electrical Specifications
A5 (148 x 210 mm, 5.8 x 8.3") Letter (216 x 279 mm, 8.5 x 11")
JIS B5 (182 x 257 mm, 7.2 x 10.1") Executive (184 x 267 mm, 7.25 x 10.5") Characteristic Specifications
215 x 315 mm, 8.5 x 12.4") 203 x 254 mm, 8 x 10" Primary Line Voltages • 100-127 VAC ±10% (90 ~ 140V) (10 amps)
Bypass A6 (105 x 148 mm, 4.1 x 5.8") Statement (140 x 216 mm, 5.5 x 8.5") • 220-240 VAC ±10% (198 ~ 264V) (5 amps)
Tray B6 (125 x 176 mm, 4.9 x 6.9") Monarch envelope (98 x 190 mm, 3.9 x Primary Line Voltages Frequency Range 50/60 Hz ± 3%
C5 envelope (162 x 229 mm, 6.4 x 9") 7.5") Power Consumption at Rated Voltage • Power Off: 0 W
C6 envelope (114 x 162 mm, 4.5 x No. 9 envelope (99 x 226 mm, 3.9 x 8.9")
Input • Printing: 550 W
6.38") No. 10 envelope (241 x 105 mm, 4.1 x 9.5")
DL envelope (110 x 220 mm, 4.33 x Envelope 6 x 9 (152 x 228 mm, 6 x 9 in) • Idle: 33 W
8.66") 76 x 127 mm, 3 x 5" • Power Saver: 11 W
JIS B6 (128 x 182 mm, 5.0 x 7.2") Postcard (89 x 140 mm, 3.5 x 5.5") Rush Current When the power switch is turned on, the inrush
127 x 178 mm, 5 x 7" Postcard (102 x 152 mm, 4 x 6") current shall be maximum 50 Amp (Cold start)/
Postcard (100 x 148 mm, 3.9 x 5.8") 135 Amp (Hot start) at first 2.5 msec, and 80 Amp
Postcard (148 x 200 mm, 5.8 x 7.9") (120 V/220 V/240 V) / 85 Amp (100 V) within
10 msec.

Table 8 Supported Paper Types and Weights for Automatic 2-Sided Printing
Paper Types Weights
Recycled 60-105 g/m2
Custom

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-13 GP 7
GP 8 General Disassembly Precautions
Purpose
Use these precautions when disassembling and reassembling components.

Procedure
NOTE: The close proximity of cables to moving parts makes proper routing essential. If com-
ponents are removed, any cables disturbed by the procedure must be restored as close as
possible to their original positions. Before removing any component from the machine, note the
cable routing that will be affected.

Whenever servicing the machine, perform the following:

1. Check the replacement part number.
2. Check to verify that jobs are not stored in memory.
3. Power down the printer, GP 4.
4. Use a flat and clean surface.
5. Only install authorized components.
6. Do not forcibly remove plastic components.
7. Ensure all components are in their correct position.
8. When replacing screws into plastic components, turn the screw counterclockwise to
engage the original thread, then turn the screw clockwise. Do not overtighten. If a new
thread is cut, the plastic component will lose the ability to hold the screw. This also applies
to metal components.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 8 6-14 Xerox WorkCentre 6655 Color Multifunction Printer
 GP 9 Installing System Software Procedure
Purpose Determine the appropriate system software loading method by selecting the device(s) that
require software and type of software loading required (Upgrade, Downgrade or Reload), see
This procedure explains how to upgrade, downgrade or reload system software.
Table 1.

Table 1 Software Loading

Network Copy Scanner
Software Platform Procedure Controller Controller Marking Engine

XUI-Copy
Platform Components Overview Controller-Fax IIT Apps DADF IOT
Normal USB Upgrade - Recom- DLM file placed in Upgrade folder on a USB drive. Insert after printer is fully Upgrade Upgrade Upgrade N/A Upgrade
mended CSE method booted.

NOTE: Printer must be online and the USB port enabled.

Customer Manual Upgrade via DLM file is loaded through CWIS Properties -> General Setup -> Machine Soft- Upgrade Upgrade Upgrade N/A Upgrade
CWIS ware -> Manual Upgrade.

NOTE: Printer must be online.

Customer Automatic FTP DLM file is placed on an FTP server and CWIS is configured to periodically Upgrade Upgrade Upgrade N/A Upgrade
Upgrade check the FTP site for updated software.
Automatic Power On Software At every power on, the system checks the current version of components and N/A Upgrade, Upgrade, N/A Upgrade
Upgrade (POSU) compares with a copy retained on the network controller. Supported platforms Downgrade Downgrade
are upgraded or downgraded if a mismatch exists.

NOTE: Printer must be online.

NOTE: Auto power on upgrade will not occur if install phase (616-14) is set to
manufacturing (0) or customer install (2)
Regular AltBoot DLM file placed in "Altboot" folder on a USB drive and inserted prior to powering Upgrade, Upgrade, After AltBoot N/A After AltBoot
on the printer. Down- Downgrade, POSU may POSU may occur
grade, Reload occur
NOTE: Data loss will occur. Make a clone file before upgrading, then restore it
Reload
afterwards (GP 13).

NOTE: USB ports must be enabled.

Forced AltBoot / Failed Upgrade DLM file placed in Altboot folder on a USB flash drive, along with a file called Upgrade, Upgrade, Upgrade, Upgrade, Upgrade, Down-
FORCED_UPGRADE (case sensitive with no file extension) and inserted before Down- Downgrade, Downgrade, Downgrade, grade, Reload
powering on the printer grade, Reload Reload Reload. May
Reload require man-
NOTE: Data loss will occur. Make a clone file before upgrading, then restore it
ual NVM
afterwards (GP 13).
changes
NOTE: Adding a file called DISABLE_DATA_BACKUP (case sensitive with no
file extension) will prevent the NC from keeping data that is normally retained
through an AltBoot.

NOTE: USB Ports must be enabled.

After Alt Boot
POSU may occur

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-15 GP 9
Select from the following installation options: If the procedure is not successful . . .
• Normal USB Upgrade
• Regular / Forced AltBoot Listed below are possible problems that may stop software loading:
• Incompatible USB flash drive or inactive USB port:
If the activity light on the USB flash drive never lights or flashes, the customer may have
Normal USB Upgrade disabled the USB ports. Log into the printer’s web page, select Properties tab, Security
NOTE: Machine must be online and the USB port must be enabled. The System Administrator heading, and then click on USB Port Security and ensure that the USB ports are checked
should be able to determine which USB ports are enabled. and enabled.

Procedure
• Corrupt .dlm file.
Obtaining Software
• Incorrectly named upgrade directory on USB flash drive.
System software is available in GSN library #11428 or www.Xerox.com. To load SW onto the • HDD corruption or failure.
USB Flash Drive perform the following: • USB port disable/damage
1. Connect the flash drive to a USB port on your PWS. • Control Panel failure
• IP Board failure
NOTE: You should not have an upgrade and altboot folder in the root of the flash drive at the
same time. Regular / Forced AltBoot
2. Create a folder named upgrade at the root level of the flash drive. NOTE: Printer must be online and the USB port enabled. The system administrator should be
3. Navigate to the root directory of the flash drive. able to determine which USB ports are enabled.

NOTE: If you have more than one file with the suffix .dlm inside the upgrade folder, the latest AltBoot should be only be used under the following circumstances:
version is automatically selected. • To attempt to reinstall corrupt software

4. Locate the Machine SW folder. Inside the folder is a file with the name • After replacing a Hard Drive
WorkCentre_6655-system-sw#061120000*****# .dlm, where ***** is the version number • To upgrade software without running multiple software upgrades.
of the software. Copy this file to the upgrade folder on the USB flash drive. • To downgrade software.
5. Remove the flash drive from your PWS. There are two types of AltBoot; Regular and Forced:
Loading Software • A Regular AltBoot is used to recover from problems with the IP Board (e.g. Disk corrup-
tion, general issues). It will upgrade all software on the IP Board. Any other peripheral
1. Switch on the printer and wait for boot up. devices that need an upgrade will be handled by the Power On Upgrade feature after the
2. Perform an NVM Save, dC361. AltBoot is complete and the printer has rebooted.
3. Perform the Network Clone procedure, GP 13. – The IOT cannot be reloaded or downgraded using this feature.
4. If possible, complete or delete all pending print jobs. If the prints jobs cannot be deleted, – A Regular AltBoot takes approximately 5-10 minutes.
warn the customer that all pending jobs will be lost. CAUTION
5. Before software is loaded, ensure that the machine is fully operational. Any active faults The Forced AltBoot feature should be used with extreme caution as it will replace bootcode as
or jams must be resolved before starting this procedure. well as application code. Power failure during a Forced Altboot while programming bootcode
6. Connect the USB flash drive to the Side USB port. may result in certain options not being recoverable.
CAUTION • A Forced Altboot will upgrade or downgrade every printer component regardless of the
currently-installed software version. A Forced Altboot is required for recovering from cor-
It may take several minutes for the upgrade to start. There is NO indication until the Control
rupt application code on devices such as Fax, IOT, and IIT.
Panel displays the Software Upgrade screen. DO NOT remove the flash drive or switch Off
power until the printer reboots. – A Forced Altboot should be used if a downgrade of the IOT or IIT is required.
7. It may take several minutes for the upgrade to start. The Control Panel displays the Soft- – Performing a Forced Altboot may require 25 minutes to complete.
ware Upgrade screen. Progress bars for each of the software modules is displayed.
8. The upgrade process may require 15 minutes to complete. After the upgrade loads, the
printer reboots. When the reboot is complete, remove the flash drive.
9. Print a Configuration Report and verify software version levels.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 9 6-16 Xerox WorkCentre 6655 Color Multifunction Printer
Procedure 10. The AltBoot process should complete after approximately 5 minutes. When finished, the
Obtaining Software Control Panel displays Upgrade Complete. Remove USB Drive and press “0” in UI.
Remove the flash drive before hitting “0” or the printer will restart the upgrade.
System software is available in GSN library #11428 or www.Xerox.com. To load software onto 11. If the AltBoot process fails, the AltBoot failed screen appears. Follow the on screen
a USB flash drive perform the following: instructions. Restart the procedure.
1. Connect the flash drive to a USB port on your PWS.
NOTE: Do not switch off the machine until prompted to do so. During the next few steps,
NOTE: You should not have an upgrade and altboot folder on the flash drive at the same time. the Hard Drive is being encrypted. Switching Off the printer can cause only partial encryp-
tion of the Hard Drive.
2. Create a folder named altboot at the root level of the drive.
12. The Control Panel displays the Data Encryption/Decryption screen after the data
3. Forced AltBoot only: Create a file named FORCED_UPGRADE inside the altboot
encryption is complete. This takes about 5 minutes. If there is a problem during encryp-
folder. This is an empty file and must not have an extension; the AltBoot routine only
tion, a reset printer screen appears. Do not power Off unless the “RESET MACHINE”
checks to see that a file with this name is present. To create the empty file, do the follow-
screen is displayed. In this case, cycle system power and check software version levels. If
ing:
software is not correct, start over.
• Open the altboot folder
13. The printer reboots several times before returning to ready. In some instances a power on
• In a blank area of the screen, right click and select “New”.
failure screen may appear. Cycle system power to clear the fault.
• Select “Text Document”.
14. Perform an NVM Restore, dC361.
• The name “New Text Document.txt” will be highlighted.
15. Perform a Network Clone Restore, GP 14.
• Type “FORCED_UPGRADE” and hit “Enter”.
If the procedure is not successful . . .
• A pop-up with the message “If you change a file name extension, the file might
Listed below are possible problems that may stop AltBoot software loading:
become unusable. Are you sure you want to change it?” will appear.
• Incompatible USB flash drive.
• Click on ”Yes”.
• Corrupt .dlm file.
To eliminate corrupt data carryover, create a file called DISABLE_DATA_BACKUP (case
• Incorrectly named upgrade directory on USB flash drive.
sensitive with no file extension). This prevents the NC from keeping data that is normally
retained through an AltBoot. • HDD corruption or failure.
4. Navigate to the root directory of the flash drive. • USB port disable/damage
• Control Panel failure
NOTE: If you have more than one file with the suffix .dlm inside the altboot folder on the Flash
• IP Board failure
Drive, the latest version will be automatically selected.

5. Locate the Machine SW folder. Inside the folder will be a file with the name
WorkCentre_6655-system-sw#061120000*****# .dlm, where ***** is the version number
of the software. Copy this file to the altboot folder on the USB flash drive
6. Remove the flash drive from your PWS.
Loading Software
1. Switch On printer power and wait for the printer to boot.
2. Perform an NVM Save, dC361.
3. Perform the Network Clone procedure, GP 14.
4. If possible, complete or delete all pending print jobs. If the prints jobs cannot be deleted,
warn the customer that all pending jobs will be lost.
5. Before software is loaded, correct any active faults or jams.
6. Switch Off the printer.
7. Connect the USB flash drive to the Side USB Port.
8. Switch On the printer.
9. The Control Panel displays the Software Upgrade screen. Progress bars for each of the
software modules are displayed.

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-17 GP 9
GP 10 How to Check a Motor 2. Check that the drive voltage at the driver PWB when the component control code for the
motor is entered. If the drive voltage is present, check the wiring and connectors to the
This procedure describes how to check a motor: motor. If the drive voltage is not present, check the power to the driver PWB. If the power
to the PWB is good, install a new driver PWB.
Initial Actions
NOTE: When checking for pulses, use a standard digital multimeter. Using the DC volts range,
WARNING or the AC volts range, expect to obtain a reading greater than 1V and less than 4 volts, while
Switch off the electricity to the machine. Disconnect the power cord from the customer the motor is running. The actual value depends on the meter’s reaction to square waves and to
supply while performing tasks that do not need electricity. Electricity can cause death or the particular frequency of the pulses. It is common to obtain a reading of 2 to 3 volts. If the
injury. Moving parts can cause injury. meter has a minimum and maximum recording facility, expect a maximum value of around +4.9
1. Check that the motor is free to rotate. volts DC, and a minimum value of around +0.2 volts DC
2. Check that all the motors mechanisms are clean, free to move and lubricated correctly.
Check the operation of the encoder as follows:
3. Enter the component control code for the motor, refer to dC330. Run the motor for 30 sec-
onds, if the motor shows signs of or can be heard to slow down, the motor is defective. Check for pulses when the motor is running. If pulses are present, check the driver PWB. If
Replace the motor. pulses are not present at the motor, check the wiring to the motor and repair to install new wir-
4. Perform the appropriate procedure: ing. If pulses are present, install a new driver PWB.
• Two Wire DC Motor
Four Wire Stepper Motor
• DC Motor with Integral Encoder
• Four Wire Stepper Motor
NOTE: A stepper motor with an internal open circuit may appear to be fully functional under
NOTE: The voltages, PJ numbers, pin numbers and PWB names shown are an example only. dC330 component control. However, under normal operation it will run with intermittent failure.
Go to the wiring diagram associated with the RAP for the correct information. Use the multimeter to check stepper motor coil resistance.

Two Wire DC Motor 1. Refer to Figure 1. Disconnect PJ111. Check the +24V supply and the phase pulses to
GND when the component control code for the motor is entered. If the supply and pulses
NOTE: In cases where the motor may be driven forward or backward, the same two feed wires are present, install a new motor.
are used, but the voltages on them are reversed, to reverse the motor direction. Such motors 2. Check the connectors and wiring to the motor. Repair or install new wiring, as necessary.
may have two component control codes, for forward and reverse. A typical application is a tray 3. Disconnect PJ11. Check the +24V. If +24V is not present, check the power to the PWB. If
lift motor with a tray-up and a tray-down direction the power is good, install a new PWB. Check the phase pulses at the PWB. If the phase
pulses are not present at the PWB, install a new PWB.
1. Check the drive voltage when the component control code for the motor is entered. If the
drive voltage is measured, install a new motor. If the drive voltage is not measured, con-
tinue to the next step.
2. Check that the drive voltage can be measured on the PWB when the component control
code for the motor forward is entered. If no drive voltage is measured, check the power to
the PWB. If the power is good install a new PWB. If the drive voltage is measured at the
PWB, check the wiring to the motor. Repair or install new wiring.
DC Motor with integral Encoder

NOTE: This type of motor has the normal drive voltages for a DC motor, plus the +3.3V and 0V
lines for the encoder. The encoder has two outputs, A and B, producing pulses when the motor
is on. When the motor is running in one direction, the encoder A pulses lead the encoder B
pulses. In the other direction, encoder B pulses lead encoder A pulses. In this way the control-
Figure 1 Example Motor Wiring Diagram
ler can detect that the motor is running in the correct direction.

Check the operation of the motor as follows:

1. Check the drive voltage when the component control code for the motor is entered. If the
drive voltage is present at the motor, install a new motor. If the drive voltage is not
present, go to step 2.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 10 6-18 Xerox WorkCentre 6655 Color Multifunction Printer
GP 11 How to Check a Sensor GP 12 How to Check a Solenoid or Clutch
Use this procedure to check the operation of all types of sensor. Use this procedure to check a clutch or solenoid.

NOTE: Some sensors have a resistor within the sensor and other sensors require a resistor on Initial Actions
the PWB. The resistor limits the current through the LED. The voltage to the sensor LED with
an external resistor, is typically 1.2V.
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
NOTE: The voltages, PJ numbers, pin numbers and PWB names shown are examples only. supply while performing tasks that do not need electricity. Electricity can cause death or
Go to the wiring diagram associated with the RAP for the correct information. injury. Moving parts can cause injury.
NOTE: In some cases, two sensors are used to form an interruptible beam of light. In these 1. For a clutch, check that the shafts, gears, rolls etc., associated with the clutch are free to
cases, the LED of one sensor and the sensing element of the other sensor are used. Treat the rotate, clean and lubricated where applicable.
two sensors as if they were housed in the same body for diagnostic purposes, ignoring the 2. For a solenoid, check that the solenoid is free to actuate and that the mechanisms associ-
unused part of each sensor. If the combined sensors do not operate correctly and the beam ated with the solenoid are free to move.
path is clear of obstruction, it may be necessary to install both new sensors. Procedure
Quick Sensor Check NOTE: The voltages, PJ numbers, pin numbers and PWB names shown are an example only.
Enter the component control code for the sensor, refer to dC330. Actuate the sensor. If the dis- Go to the wiring diagram associated with the RAP for the correct information.
play changes, the sensor operates correctly. If the display does not change, perform the proce-
NOTE: When a solenoid is energized in diagnostics, movement is seen. When a clutch is ener-
dure.
gized in diagnostics, the sound of the clutch action is heard. If possible, run the motor con-
nected to the clutch to confirm when the clutch is energized
Procedure
For the sensor in the wiring diagram shown in Figure 1: 1. Enter the dC330 output code for the clutch or solenoid. If the clutch or solenoid does not
energize, continue with step 2.
1. Actuate the sensor and check for a change in voltage at PJ27, pin 3. If the voltage 2. Refer to Figure 1 to disconnect PJ17, check for +24V at pin 1 on the wiring side of the
changes, install a new PWB. If the voltage does not change, continue to the next step. connector, If the voltage is not correct, trace the faulty component.
2. Disconnect PJ271. Check for +3.3V and 0V (GND) on the harness. 3. Reconnect PJ17, enter the dC330 output code for the clutch or solenoid, while measuring
3. Disconnect PJ27 and PJ271. Check the harness and the connectors for continuity. the voltage between pin 1 and ground. If the voltage does not change when the code is
entered, install a new PWB.
4. Check for +3.3V and 0V (GND) at the PWB.
5. If necessary, install new components or repair the wiring. 4. There may be an intermittent fault, perform the actions that follow:
a. Check the wiring. Repair or install new components as necessary.
b. Operate the clutch or solenoid under normal running conditions. If the clutch or sole-
noid operates intermittently or with hesitation, install new parts.
c. Check that the clutch or solenoid has enough drive to operate the mechanism to
which it is attached; if necessary, install a new clutch or solenoid.

Figure 1 Example Sensor Wiring Diagram

Figure 1 Example Clutch Wiring Diagram

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-19 GP 11, GP 12
GP 13 How to Check a Switch GP 14 Cloning Network Configurations
Use this procedure to check the operation of a switch. Purpose
Use this procedure establish a network connection between the PWS and printer to create a
NOTE: Figure 1 shows an interlock switch actuated by the closing of a door.
copy of network configuration settings and distribute these settings to multiple devices on the
Initial Actions network. This cloning process can also be used to backup and restore network settings lost
during an Altboot software load.
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer NOTE: To establish a direct Ethernet connection between the PWS and printer requires the
supply while performing tasks that do not need electricity. Electricity can cause death or printer’s driver installation CD-ROM, a crossover cable, and the PWS.
injury. Moving parts can cause injury. Depending on the printer, a Windows 7 (W7) driver might not be available on the printer’s
Manually check that the switch operates. Ensure that the magnet or other actuator has enough driver installation CD-ROM. If not, download the driver from Xerox.com under the Support and
mechanical movement to operate the switch. Drivers page. W7 has two kernal types, 32 and 64-bit. If you try to install the wrong driver, Win-
dows displays an error to indicate the driver is incorrect. To check the kernal type, click on
NOTE: The voltages, PJ numbers, pin numbers and PWB names shown are an example only. Start, in the right column, right click on Computer and select Properties, you will see the kernal
Go to the wiring diagram associated with the RAP for the correct information. type listed as System Type.

Procedure Establishing a LAN connection

1. Enter diagnostics and check the switch. The switch is operating correctly, check and Use these steps to establish a Local Area Network (LAN) connection between the PWS and
adjust the mechanism that actuates the switch printer using a crossover cable.
2. Refer to Figure 1, then disconnect the switch.
NOTE: Record the original data for every change you make. You may or may not need to reset
3. +5V is available between pin 1 and pin 2 on the wiring side of the connector. the IP address, depending on PWS usage and local network practice.
4. +5V is available at PJ231 between pins 1 and 2 on the PWB.
1. Print a Configuration Report, GP 18. Note the printer’s IP address.
5. Check the supply voltage. If +5V is available, install a new PWB.
2. Connect the crossover cable between the PWS and printer.
6. Check the wiring between PJ231 and the switch. Repair or install new parts as necessary.
3. Open a Command window (CMD) on the PWS.
7. Install a new switch.
• If running XP, click on Start, then select Run. Type CMD in the Run dialog box and
press Enter.
• If running W7, select Start and in the Search box above the Start button, type CMD
and press Enter.

NOTE: If the Windows key is enabled (the key located in the lower left corner with the
Microsoft logo), hold the Windows key down, press R and release both keys to open the
Run dialog box.

4. Type ipconfig at the prompt, then write down the current network settings displayed.
Restore these settings when the LAN connection is no longer needed.

NOTE: Use the IPv4 address for the Local Area Connection, not the address listed under
Figure 1 Example Switch Wiring Diagram Wireless Ethernet Connection (if enabled in your laptop).

5. Check the IP addresses of the PWS and printer. If the PWS has been connected to the
same subnet, the PWS and printer address should share the same values for the first
three and have a different value for the forth number. Refer to Table 1 for an example.

Table 1 Example LAN Settings

Printer PWS / Laptop
IP Address 192.168.0.2 192.168.0.5
Subnet Mask 255.255.255.0 255.255.255.0
Gateway/Router 192.168.0.1 192.168.0.1

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 13, GP 14 6-20 Xerox WorkCentre 6655 Color Multifunction Printer
 If the PWS and printer share similar, but unique IP address, continue. If not, use the Set a
Static IP Address on the PWS to set the PWS IP address.
6. After verifying the IP addresses are correctly configured, PING the printer.
a. In the Command window (where the blinking cursor is) type the word PING. Press
the space bar once and enter the printer’s IP address and press Enter. As an exam-
ple: ping 192.168.0.2.
b. If the printer responds to the PING command, it replies four times. This should not
take more than two or three seconds.
c. If the PING command times out, or responds with “host unreachable”, check the IP
addresses that were entered. If the IP address is correct, see Troubleshooting the
Connection.
7. If the PING command replies, exit the Command window (type “exit” at the prompt and
press Enter). This test verifies the Ethernet connection is good.
8. Install the printer driver and setup the printer as a local printer. Select connect to the
printer using “other” port type. From the dialog drop down select Standard TCP/IP port.
9. For the Printer Name or IP address, enter the printer’s IP address (192.168.0.2 in this
example).
10. When the driver installation finishes, Select Yes at the Print Test Print dialog box.

NOTE: If the test page does not print, the customer could have Accounting enabled (if the
device supports it) requiring that a special code is submitted with the print job before the
printer prints. Test the printer using CentreWare Internet Services

11. After the test print is completed, open a web browser on the PWS.
12. In the Address Bar (in place of a web site address or URL), enter the printer’s IP address
(192.168.0.2 in this example).
13. If the connection is working correctly, the CenterWareIS web page of the printer will be
displayed.

NOTE: If you are unable to open the printer’s webpage, verify that CentreWare Internet
Figure 1 Cloning Interface
Services are enabled on the configuration page. Depending on the printer, this could be
documented as HTTP (under protocols) or CentreWare IS (for example that is). If your
2. Scroll down the page to see critical information about the cloning process. Click the View
web browser is set to use a Proxy address for the internet connection, you will not be able
Feature Details link to get a list of data that is backed up and/or restored using the Clon-
to bring up the printer’s webpage as you will have no connection to that proxy server while
ing Feature.
directly connected to the printer via crossover Ethernet cable. Refer to PWS Browser
Proxy Server Setting for instructions on Internet Explorer proxy configuration. Saving Settings to a Clone File
1. Select the Clone button under the View Feature Details link (Figure 2).
Creating the Clone File
1. When the Centreware® Internet Services window opens, select the Properties Tab. NOTE: If the customer has enabled Administrator Password, you will be asked for a user
Click on the General Setup link, then the Cloning link (Figure 1). name and password. Defaults are admin as the user name, and 1111 for the password.

CAUTION
Do NOT attempt to open the clone file as it may corrupt the file.
2. Right click on Cloning.dlm to save the clone file (Figure 2).

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-21 GP 14
 NOTE: When the file is saved, a .txt extension may automatically be placed at the end of 3. Select Network Sharing Center.
the file name. Before loading this clone file, navigate to the saved file, right-click on the file 4. Select Change Adaptor Settings in the upper left corner of the Control Panel.
and select Rename. The correct format for the file name is xxxxxxxx.dlm.
5. Right-click on Local Area Connection, then select Properties.
6. On the Networking tab (for local area connection), click on Internet Protocol Version 4
(TCP/IPv4), then select Properties.
7. Select Use the following IP address and enter an IP address similar to the printer to
manually set the PWS IP address and subnet mask to match the printer’s IP configuration
settings.
8. Click OK twice and exit Network Connections and return to Creating the Clone File.
For XP:
1. Click Start and select Control Panel.
2. Click Network and Internet Connections and then select Network Connections.
3. Right-click on Local Area Connection and then select Properties.
4. On the General tab (for local area connection), click Internet Protocol (TCP/IP), and then
click on Properties.
5. Click Use the following IP address to manually set the computer's IP address and sub-
net mask to match the printer’s IP configuration.
6. Click OK twice to exit Network Connections and return to Creating the Clone File.
PWS Browser Proxy Server Setting
The following steps ensure the proxy server settings are correct.
Figure 2 Save the Clone File 1. Open Windows Internet Explorer.
2. Select Tools - Internet Options.
Using the Clone File
3. Select the Advanced tab.
NOTE: This procedure can be done from ANY PC connected to the network or the PWS con- 4. Scroll down to HTTP 1.1 Settings.
nected to the machine using an Ethernet crossover cable. The only requirement on the PC is 5. Ensure that the “Use HTTP 1.1 through proxy connections” box is un-checked.
an Internet Browser.
6. Select OK to close the Internet Options window.
1. Open Internet Explorer 7. Close Windows Internet Explorer.
2. Enter the machine’s IP address in the Address line and select Go. Troubleshooting the Connection
3. When the Centreware® Internet Services window opens, select the Properties Tab. 1. Verify the cable being used is a true crossover cable.
Click on the General Settings link, then the Cloning link.
2. Print a new Configuration page and check that the TCP/IP area shows the IP address,
4. Scroll to the bottom of the page. Net Mask, and Gateway numbers entered.
5. Use the Browse button to navigate to the clone file, or type the full path to the file. 3. If an Ethernet type and speed is shown on the Configuration page, the printer recognizes
Click Install. If the printer does not reboot after five minutes, cycle system power. the connection. Example: “100BaseFullDuplex”. This is a feature for some older products.
6. Verify the cloned settings with a new Configuration Report. Some products also display the Ethernet cable or network connection is not available on
the Control Panel status screen.
Set a Static IP Address on the PWS
a. If the Network Speed/Type is Disconnected, the printer is not recognizing the net-
Use this procedure to manually set the PWS IP address. Instructions are given for W7 and XP.
work card, or the printer is not detecting the cable or PWS.
NOTE: If the PWS has a wireless Ethernet card/adapter installed, Windows will not use the b. Perform an NVRAM reset on the printer.
wired Ethernet port by default until either the PWS is rebooted or you temporarily disable the c. Print the Configuration Page and check the Network Speed/Type. If still showing Dis-
wireless Ethernet card. If unsure how to disable/enable your wireless Ethernet card, restart the connected, reseat the IP Board and reprint the Configuration page.
PWS after setting the IP address. d. If it still shows Disconnected, replace the IP Board, REP 18.2.6.
For W7: 4. Check TCP/IP settings and verify that “LPR and Appsocket Port 9100” are both enabled
1. Open the Control Panel. 5. Set TCP/IP configuration settings to match the first (original) configuration page printed.
2. Select Network and Internet.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 14 6-22 Xerox WorkCentre 6655 Color Multifunction Printer
GP 15 - There is no PWS Altboot for the 6655

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-23 GP 15
GP 16 Separate System Modules
Use this procedure to remove the Mailbox or Finisher modules from the printer.

Description
Most service procedures for finishing modules require separation of the module from the
printer. Only 1 person is required to separate the Mailbox or Finisher from the printer.

WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
CAUTION
Always move the printer separately from the optional tray.
1. Refer to Figure 1 to clear the media path and output trays.

Figure 2 Separate Optional Feeder Assembly from the Printer

3. Lift the module to clear the support brackets.

Figure 1 Clear the Media Path and Output Trays 4. Place the module on a suitable work surface to avoid damage.
5. Check the position of the option connector before reassembly.
2. Refer to Figure 2 to locate and remove the Optional Feeder retaining screws before sepa-
rating the printer and optional trays.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 16 6-24 Xerox WorkCentre 6655 Color Multifunction Printer
GP 17 External Fax Line Test GP 18 Printing Reports
When the customer reports a fax issue sometimes it is very difficult to determine if the problem Purpose
is with the customers phone line or the Xerox machine. To list reports available from the printer’s Control Panel, refer to GP 3.

The preferred method of verifying the phone line functionality is to use the Modem saver • Configuration Report
device part number 600T2133 to ensure the fax line is wired correctly and to use the Analog
• Getting Started
hand set part number 600T1937 or customer’s analog phone to place calls on the line. Be sure
that both local and long distance calls can be placed and the line quality is clear, no static. • Troubleshooting Print Quality Page
• Graphics Demo Page
Use Handset: • PCL Font List
• Can it dial externally on the line? • PostScript Font List
• Can it receive a call on the line? Configuration Report
• Evaluate Line quality. Check Line for unwanted beeps, or noise. The Configuration Report lists the current state of system configuration parameters including
Use Breakout Box to measure voltages (Use the machine chassis as ground). Refer to Fax installed options and network settings.
101 training for Breakout Box usage instruction:
• Check ground continuity. Getting Started
• Line Voltage -20 to -50 VDC? The Supplies Usage report includes the current status of printer consumables and routine
maintenance items. Life counts, installation dates and replacement part numbers are listed for
• Loop Current 15 to 95 mA DC?
all items.
• Ring Signal 50 to 90 VAC?
• Check Ring-Ground and Tip-Ground <1VAC Troubleshooting Print Quality Page
If a line quality issue or incorrect voltage is found then the customer will need to resolve these The Usage Profile report lists page counts, coverage, and billing meter totals.
problems.
Graphics Demo Page
This report lists the chain-code, error message, and date of the last 40 errors.

PCL Font List

This report provides a list of the installed PCL fonts.

PostScript Font List

This report provides a list of the installed PostScript fonts.

Procedure
Reports are printed from the Control Panel, CWIS, or if configured, automatically following cer-
tain events. From the Control Panel

NOTE: It is not necessary to enter SA mode (log in) in order to perform this procedure.

• Press the Machine Status button.

• Select Machine Information tab.
• Select Information Pages...
• Select the desired report and press Print button.

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-25 GP 17, GP 18
GP 19 Intermittent or Noise Problem • contamination, such as a feed roller that has a build up of dirt or toner
• wear, such as gear teeth that are rounded or have excessive backlash
Purpose
• HFSI, even if they are not near or have not exceeded the SPEC LIFE or COPY
The purpose of this RAP is to provide guidance for resolving an intermittent or noise problem.
COUNT value
This is not an exact procedure, but a set of recommended actions that use the resources of the
service manual to help locate the cause of an intermittent or noise problem. • wires chafing against components of the machine, especially against moving com-
ponents
Procedure • misaligned, mis-adjusted, or incorrectly installed components
• slow or slipping clutches; slow or binding solenoids
1. Check the service log. Recent service actions may provide information about the prob-
lem. For example, a component that was recently replaced to correct another problem • damaged components
may be the cause of the new intermittent problem. • excessive heat, or symptoms of excessive heat, such as the discoloration of a com-
2. Noise problems may be due to improper installation. Check for packing materials that ponent
have not been removed. Check for loose or missing hardware. • loose cables or wires
3. Run the printer in a mode that vigorously exercises the function that is suspected. The 10. Perform the adjustments for the components that are not in the RAP, but are associated
printer may fail more frequently or may fail completely under these conditions. Look for with the function that is failing. Refer to the BSDs. Check to ensure that the adjustment
signs of failure or abnormal operation. CAN BE MADE and that there is an adequate range of adjustment, and that it can be set
An intermittent problem can usually be associated with a RAP, since when it does fail, it to or near the nominal value. Any abnormality that is observed may be an indication of the
results in a fault code, a jam code, or some other observable symptom. cause of the problem. For example, a component can be adjusted to the nominal value,
4. Using the RAP that is associated with the symptom of the intermittent problem, examine but it is at the limit of the adjustment range. This is not normal and may be an indication of
the cause of the problem
all of the components that are referenced in the RAP. Look for:
11. Operate all of the components that are not in the RAP, but are associated with the func-
• contamination, such as a feed roller that has a build up of dirt or toner
tion that is failing with Component Control. Refer to the BSDs. Observe the components
• wear, such as gear teeth that are rounded or have excessive backlash
for any symptoms of abnormal operation, such as a hesitation, or an unusual sound.
• HFSI, even if they are not near or have not exceeded the SPEC LIFE or COPY 12. Replace any components or consumables that are known to be a frequent cause of the
COUNT value problem. When doing this, consider the cost and time required. If the suspected item is
• wires chafing against components of the machine, especially against moving com- inexpensive, can be installed quickly, and has a high probability of resolving the problem,
ponents then it is reasonable to replace it.
• misaligned, mis-adjusted, or incorrectly installed components 13. Leave an accurate and detailed record of your actions in the service log. Describe what
• slow or slipping clutches; slow or binding solenoids you have observed, what actions you took, and the recommended next steps.
• damaged components
• excessive heat, or symptoms of excessive heat, such as the discoloration of a com-
ponent
• loose cables or wires
5. Using the RAP that is associated with the symptom of the intermittent problem, perform
all of the adjustments for the components or functions that are referenced in the RAP.
Check to ensure that the adjustment can be made and that there is an adequate range of
adjustment, and that it can be set to or near the nominal value. Any abnormality that is
observed may be an indication of the cause of the problem. For example, a component
can be adjusted to the nominal value, but it is at the limit of the adjustment range. This is
not normal and may be an indication of the cause of the problem.
6. Operate all of the components in the appropriate RAP that is associated with the symp-
tom of the intermittent problem with Component Control. Observe the components for any
symptoms of abnormal operation, such as a hesitation, or an unusual sound.
7. Check that the AC and DC power are within specification.
8. Get technical advice or assistance when it is appropriate. This will depend upon the situa-
tion and the established local procedures.
9. Examine the components that are not in the RAP, but are associated with the function that
is failing. Refer to the BSDs. Look for:

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 19 6-26 Xerox WorkCentre 6655 Color Multifunction Printer
GP 20 How to Safely Lift or Move the Printer
Use this procedure when lifting or moving heavy modules.

Description
Most service procedures for the optional feeder module requires separation of the printer and
feeder. Feeder removal requires two people.

WARNING
Do not attempt to remove or lift the following component with less than 2 people. The
component is very heavy and requires at least 2 people to lift or remove it. Any attempt
to remove or lift the component with less than 2 people could result in serious personal
injury.
CAUTION
Always move the printer separately from the optional tray unless the optional stand is installed.
Lift the printer firmly by gripping the recessed areas on both sides of the printer. Never lift the
printer by gripping any other areas.
CAUTION
Failure to properly repackage the printer for shipment can result in damage to the printer. Figure 1 Close the Output Tray Extension
Printer damage caused by improper packaging is not covered by the Xerox warranty, service
agreement, or Total Satisfaction Guarantee. 6. Remove the paper from the paper tray, Figure 2. Keep the paper wrapped and away from
When moving the printer or removing heavy modules, observe the following: humidity and dirt.
1. Locate a suitable stable surface to support the module after removal.
2. The support surface height is between 750 mm and 1000 mm (30" and 39").
3. Check there are no hazards or obstacles between the printer and support surface.
CAUTION
If the optional Productivity Kit (HD) is not installed, ensure that the Ready LED is off before you
turn off the printer. The data in the memory is cleared when the printer is turned off.
4. Turn off the printer and disconnect the power cord and other cables from the back of the
printer.
5. Remove any paper or other media from the output tray. If the output tray extension is
extended, close it, Figure 1.

Figure 2 Remove Paper from the Paper Tray

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-27 GP 20
7. Lift and carry the printer as shown in Figure 3. GP 21 Machine Lubrication
Purpose
To give information on the use of lubricants.

Procedure
CAUTION
Only use lubricants as directed. Incorrect use of lubricants could seriously affect the perfor-
mance of the machine.
Take the following precautions when performing machine lubrication:
• Wear disposable gloves.
• Only use lubricants that are specified in the procedure.
• Only lubricate parts as directed.
• Apply only the smallest amount of lubricant, sufficient to lubricate the parts. To prevent
contamination, remove any surplus lubricant.
• Take great care not to contaminate other parts with the lubricant.

Figure 3 Printer Lifting Technique

NOTE:
• When moving the printer, do not tilt it more than 10 degrees to the front, back, left, or
right. Tilting the printer more than 10 degrees can cause toner spillage.
• When moving the printer over a long distance, remove the imaging units and toner
cartridges to prevent toner from spilling. Pack the printer inside a box. For a repack-
ing kit and instructions, go to www.xerox.com/office/WC6655support.

8. After moving the printer:

a. Reinstall any parts you removed.
b. Reconnect the printer to the cables and power cord.
c. Plug in and turn on the printer.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 20, GP 21 6-28 Xerox WorkCentre 6655 Color Multifunction Printer
GP 22 Installation Space Requirements
WARNING
Do not work in a confined space. 1 m (39 inches) space is needed for safe working.
WARNING
USA and Canada. Do not install this machine in a hallway or exit route that does not
have 1.12 m (44 inches) of space additional to the normal space requirements in front of
the machine. To conform with fire regulations this additional 1.12 m (44 inches) of space
is needed in front of the machine in hallway and exit route
Dimensions/Mass of Printer
Refer to Table 1 for the printer mass. The dimensions shown in Figure 1 and Figure 2 are with
Bypass Tray cover, ejection stacker, and scanner cover closed.

Table 1 Printer Mass

Printer Mass
WorkCentre 6655 37.7 kg (83.1lb)
WorkCentre 6655 w/ 550-sheet feeder 43.9 kg (96.8 lb)

Figure 2 WorkCentre 6655 Dimensions with Option 550-Sheet Feeder

Installation Clearance Requirements

This section shows the required installation space needed to properly operate and service the
machine.

1. In order to function properly, the printer must be placed on a flat surface with the following
minimum clearances shown in Figure 3 (WorkCentre 6655) and Figure 4 (WorkCentre
6655 with option 550-sheet feeder).

Figure 1 WorkCentre 6655 Dimensions

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-29 GP 22
 2. Mounting surface flatness must be within the specified range.
3. The printer must not be tipped or tilted more than 7 mm in any direction (Figure 5).

Figure 3 Minimum Installation Clearance Requirements: WorkCentre 6655

Figure 5 Tilting Specifications

Figure 4 Minimum Installation Clearance Requirements: WorkCentre 6655 with Option

550-Sheet Feeder

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 22 6-30 Xerox WorkCentre 6655 Color Multifunction Printer
GP 23 First Print Output Time GP 24 Restriction of Hazardous Substances (RoHS)
Purpose Purpose
From Ready State To give information on the RoHS Directive.
First Print Output Time (FPOT) is defined as the time from when the engine receives a Start
signal in Ready state, until a single page is printed and delivered to the output tray (Table 1). The RoHS Directive restricts the use of certain hazardous substances in electrical and elec-
tronic equipment. It applies to equipment placed in the European Union (EU) market. The
From Sleep State directive takes effect from 1st July 2006.
First Print Out Time includes the time required to print any maintenance pages (such as the
NOTE: Currently these restrictions are only for the European Union (EU) market and some
configuration page) and a single customer page on A size media from Tray 2 (Table 1).
associated countries. For more information go to www.Xerox.com.
Table 1 First Print/Copy Output Time The hazardous substances are:
FPOT • Lead (Pb)
Color FPOT (Power Saver/ FPOT • Mercury (Hg)
Mode (Ready) Sleep) (from cold) FCOT
• Cadmium (Cd)
B/W As fast as 10.5 sec As fast as 23.4 sec 26.0 sec Platen: 14.2 sec • Hexavalent Chromium (Cr 6+, Cr [VI])
DADF simplex:
• Polybrominated Diphenyl Ethers (PBDE’s)
15.0 sec
• Polybrominated Biphenyls (PBB’s)
Color As fast as 10.8 sec As fast as 23.4 sec 26.0 sec Platen: 15.6 sec
DADF simplex:
18.9 sec Identification of a RoHS Compliant Machine
Xerox maintains a central list of RoHS compliant printers. This general procedure is for infor-
mation only. All current-model WorkCentre printers are RoHS compliant.

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-31 GP 23, GP 24
GP 25 Remote Control Panel Remote session indication – When the remote session is initiated, a temporary popup mes-
sage is displayed on the Local UI alerting any local users that there is a remote user online. A
The Remote Control Panel feature enables users the ability to:
status message is then indicated in the status region and soft login button. The soft login button
region is meant to describe the user roles. Authenticated users, including CSEs, are displayed.
• Remotely view the local UI display graphics
These remain persistent until the session is closed. A local Service Engineer will know whether
• Operate both hard and soft buttons on the control panel the device is being used.
The Remote Control Panel on the remote user PC mimics the device control panel enabling
the remote user to operate the device as though they were standing at the machine. Remote Session Operation - When the Remote Control Panel is opened, the remote user will
see a mimic of the local UI.
Operation
• The soft and hard buttons from the machine control panel are displayed on the Remote
Feature enablement – The feature is defaulted off when delivered to the customer. The Sys-
tem Administrator is required to enable the feature to allow usage. Control Panel. The hard buttons are located in slightly different locations, but are labeled
and function the same as on the local control panel.
1. In the Centreware window, login as admin. • Operation of all the machine features is the same on the Remote Control Panel as at the
local control panel and UI.
2. Select Support, then Remote Control Panel.
3. Under Configuration, select Edit. NOTE: If the browser magnification is set to 75%, then the viewing window will be smaller
4. Select Enable. than the control panel and the touch screen will be truncated. Conversely, if the browser
magnification is set to 125%, the viewing window is larger than the remote control panel.
Feature access permissions – The SA is required to set the permissions of the feature for it
The entire control panel is visible but there will be large grey areas around the panel.
to be usable. When Enable is selected, the permission levels are displayed.
Service Access - The System Administrator has access to the machine within the customer
• SA only – This setting will prevent any user including Service Engineer personal from firewall. The service engineer must be invited inside the firewall.
using the feature.
• SA and Service Engineer – This setting allows only the SA or Service Engineer to use the • The procedure for the customer to invite the service engineer to remotely access the
feature by authenticating their respective user credentials. machine is OPCO dependent. Contact your OPCO for instructions on how to engage the
• All users – This opens the feature to all users without the need to authenticate. customer.
Remote Session – The Remote Control Panel session is initiated under Access. This feature • After the customer has given the service engineer a portal through their firewall, the ser-
allows only the Admin and Diagnostics User to interact with the machine's local Control Panel. vice engineer can connect to the machine.
Before starting the session, the remote user should determine if the session collaborative or Only the service engineer should have the diagnostic User ID and Password. Only the
blocked. Service Engineer can launch a diagnostics session from the remote UI.

• Collaborative - This mode means that both the Remote Control Panel and the Local UI NOTE: If the device is in service mode when a remote session is initiated, the session will
only connect if logged in as diag in CentreWare. This prevents non-service engineers
are active. This mode can be used by System administrator, help desk support, IT sup-
from connecting into the device while it is being serviced.
port, or training when the person at the machine and the remote user need to see how the
other is operating the machine. 1. Connect to the printer via CentreWare IS.
• Local UI blocking – Check the box by Block Local Control Panel (local user can only 2. Login to Centerware
observe). This blocks the local panel when the remote session is initiated. This protects
• User ID - diag
the machine during remote service procedures. When activated, the local user is notified
• Password - 3424
by a message that the local panel hard and soft keys are not functional at this time.
Only one remote connection at a time is allowed. If a user attempts to initiate a session while 3. Select Support, then select Remote Control Panel.
another one is active, they will get a message indicating the system is busy and to try again 4. If required, check Block Local Control Panel (user can only observe).
later. This allows a service engineer to view the device remotely without concern that another 5. Select Open Remote Control Panel.
non-Service Engineer session can also connect.
NOTE: Only one Remote Control session at a time is allowed. If a remote session is
in progress, a message (Remote Control Panel session is already active.) will
NOTE: If a general user has a remote session active and an SA initiates a session, the SA has
appear. If approved by the SA, select Disconnect Current Session to enable access.
a button that will disconnect the general user. This way the SA can take control when desired.
If the message returns, the machine may need to be rebooted.
A secure connection is required to create a remote session. If SSL is not set on the machine, a
6. If the window “The web site’s certificate cannot be verified. Do you want to con-
message will appear stating that it must be set. The window for enabling SSL will be displayed
tinue.” appears, select Yes.
and can be set so that the machine is configured to allow the remote session. After the
machine reboots, the remote session can start.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 25 6-32 Xerox WorkCentre 6655 Color Multifunction Printer
 If the window “There is a problem with this website’s security certificate.” GP 26 Media Specifications
appears, select Continue to this website (not recommended).
The media trays accommodate most sizes and types of paper or other specialty media. Print
7. To start Service Diagnostics, Select the Service Diagnostics button and login (6789).
the Paper Tips page for a list of supported media.
Ending the session - A session can be terminated in several different ways. If in a diagnostic
session, remember to perform Call Closeout before ending the session. Media that May Damage to the Printer
The printer can use a variety of media for print jobs. However, some media can cause poor
NOTE: If the session is terminated before performing Call Closeout, it may not be possible to
output quality, increased jams, or damage. Unacceptable media includes:
reestablish the Remote Control Panel session. If, when you attempt to reconnect to the
machine an error message comes up that indicates a problem with initiating the session for
• Rough, plastic, or porous media
some reason, either Call Closeout will have to be done at the printer, or power will have to be
cycled before the session can be reestablished and/or returned to Customer operating mode. • Transparency
• Paper that has been stapled, folded, photocopied, or wrinkled
• Remote user closes the Remote Control Panel window.
• Envelopes with windows, metal clasps, padding, or adhesives with release strips
• Machine reboots.
• CD labels
• Unplug the internet cable at the machine.
• Media that is less than 60 g/m2 or more than 220 g/m2
• Customer host that invited the service access closes their browser.
• System Timers - The session will be terminated if the system timers time out.
Media Storage Guidelines
If media handling problems are common, review these storage guidelines with the customer.

• Store media in dark, cool, relatively dry locations. Most media is susceptible to damage
from ultraviolet (UV) and visible light. UV radiation, emitted by the sun and fluorescent
bulbs, is particularly damaging to media. The intensity and length of exposure to visible
light should be reduced as much as possible.
• Maintain constant temperatures and relative humidity
• Avoid attics, kitchens, garages, and basements. Inside walls are drier than outside walls
where moisture can collect.
• Store flat. Media should be stored on pallets, cartons, shelves, or in cabinets.
• Do not open sealed packages until needed. Leave media in the original packaging. For
most commercial grades, the wrapper’s inner lining protects the media.
Supported Media
For more detailed information about supported paper and other media, print the Paper Tips
page:

1. On the Control Panel, press the System button.

2. Select Information, and then press the OK button.
3. Select Information Pages, and then press the OK button.
4. Select Paper Tips, and then press the OK button to print.
See also: Recommended Media List at www.xerox.com/paper

Tray Capacity
Table 1 lists tray capacities.

Table 1 Tray Capacity

Media and Weight Bypass Tray Tray 1 Optional Tray DADF Input
Standard Paper 100 Sheets 550 Sheets 550 Sheets 60 sheets
Envelope 10 (approx.) 0 0 0

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Xerox WorkCentre 6655 Color Multifunction Printer 6-33 GP 25, GP 26
 Table 1 Tray Capacity GP 27 Environmental Data
Media and Weight Bypass Tray Tray 1 Optional Tray DADF Input Operating Environment Specifications
Weight 60-220 g/m2 60-220 g/m2 60-220 g/m2 50-125 g/m2 The printer should be stored and operated under the environmental conditions shown in Table
60-125 g/m2 1:
duplex
Table 1 Operating Environment
Print Image Quality Characteristic Specification
Image Quality Guarantee Conditions
Installation Temperature / Installation temperature and humidity on the condition without
The image quality is specified and guaranteed under the conditions shown in Table 2. Humidity condensation is as follows.
Operating: 10-32degC, 10-85%RH (No condensation)
Table 2 Print Image Quality Specifications Storage: minus 20-40degC, 5-85%RH (No condensation)
Item Specification Installation Altitude 0 to 3,100m
Environmental conditions Environment condition for evaluating image quality Installation Horizontality Longitudinal levelness of table surface on which the printer is
Temperature: 15-28degC installed
Humidity: 20-70%RH Longitudinal: 1 degree or under
Lateral: 1 degree or under
Guaranteed paper The print quality defined in this chapter is guaranteed when stan-
dard paper is used in the tray. Storage Temperature of a The guaranteed period of the Toner Cartridge before unpacked is
Paper condition The paper used is fresh paper immediately after unpacked, which Toner Cartridge as follows:
Normal conditions: 24 months under 0 to 35degC, 15 to 80%RH.
has been left in the operating environment for 12 hours before
unpacking. Harsh conditions: 1 month under -20 to 0degC and 35 to 40degC,
5 to 15%RH and 80 to 90%RH.
Printer condition The print image quality specified in this section is guaranteed with The storage altitude shall be 0 to 3,100m. Can be extended to 0 to
the printer in normal condition.
15,000m when shipped by air.
Image quality guaranteed The print image quality specified in this section is guaranteed in (Provided that the cargo bay is pressurized to 70.9275Kpa or
area the guaranteed image quality area specified in this manual. higher.
Criterion The print image quality is guaranteed with the Spec. In rate = 90% Acoustic Noise Operation: 56.0 dB
(g = 90%). Sound Pressure (Deci- Standby or Ready: 30.0 dB
bels)

Safety / Environment Conditions

The printer meets the safety and environmental standards shown in Table 2:

Table 2 Safety / Environment Conditions

100-127V M/C 220-240V M/C
Safety Standard UL60950-1, CSA 22.2 60950 IEC60950-1 / EN60950-1
Laser Safety Standard FDA21CFR Chapter 1, Subchap- IEC60825-1 Amendment 1 +
ter J, Section 1010, 1040 Amendment 2 / EN60825-1
Amendment 1 + Amendment 2
Class 1 Laser Product
EMI FCC Part15 Subpart B, Class A EN55022:2006, Class A

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 26, GP 27 6-34 Xerox WorkCentre 6655 Color Multifunction Printer
Noise Levels GP 28 Toner CRUM Conversion
The printer’s noise levels during operation and standby are shown in Table 3: Purpose
This procedure explains how to set the geographic differentiation code and Toner Cartridge
Table 3 Noise Levels
type to the correct values.
Operating Mode Sound Power (B) Sound Pressure (dB)
Running 7.15B 53dB Introduction
Standby 4.14B 25.1dB The WorkCentre 6655 is shipped with “worldwide neutral” Toner Cartridges installed at the fac-
tory. When the cartridges shipped with the printer are installed, the printer is set to worldwide
neutral configuration. When the Toner Cartridge is replaced, the geographic differentiation
code and Toner Cartridge type in NVM automatically change to the same settings as the
replacement cartridge. Once these NVM are set, the toner configuration can only be changed
with a CRUM conversion.

There are three types of toner: Metered, which is a single part number world wide, Sold toner
that is specific to the DMO/XING market, and Sold toner that is specific to NA/XE market. If a
toner cartridge of the wrong type (i.e., a “sold” cartridge in a “metered” configured machine) is
installed, it will generate a fault code and/or a message indicating toner incompatibility.

If the problem occurs after several toner replacements, the customer may have received the
wrong toner in a consumables order; either because the wrong part number was ordered, or
the shipment did not match the order. Resolution in this case is simple; the customer should
exchange the toner for the correct part.

If the wrong toner was installed at the first toner replacement after install, or if the configuration
NVM have changed due to software or NVM corruption, perform the following procedure:

Procedure (Non-Page Pack)

1. Record the machine serial number and the number of Total Impressions
2. Call Field Engineering or your NTS and provide the information collected in step 1.
3. You will be given a 6-character passcode.
4. Press Machine Status on the Control Panel.
5. Select the Tools tab. The Tools menu will be displayed.
On the left side of the screen are several buttons for the categories of features.
Within each category are Groups of features. Each Group contains one or more Fea-
tures.
6. Select the Device Settings category, then the Supplies group, then select Enter Sup-
plies Activation Code.

NOTE: Enter the passcode within 500 page counts of when it was issued, or it will not be valid.

7. Enter the passcode string provided in Step 3. If the passcode contains a special charac-
ter, the level of software installed on the machine may not allow entry of this character
because it is grayed out. Use the following procedure to enter the special character.
a. Log into Tools
b. In the Features column, select [General...]
c. Select [Custom Keyboard Button...]
d. The 3rd button on the bottom row is the customizable button
e. Select [Clear Text]

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-35 GP 27, GP 28
 f. Select [Shift] GP 29 How to Check a Dispenser Motor
g. Select the special character contained in the passcode
Purpose
h. Select [Save]
This procedure explains how to check the operation of the Dispenser Motors and related
i. Log out of Tools
gears. This is typically done when an error is caused from an amount of toner in the Imaging
8. The Geographic Differentiation Code and Toner Cartridge Type will be reset to the values Unit’s developer assembly that is insufficient to maintain density. The two likely causes are, the
of the customer’s agreed-to supplies plan. Print Cartridge is not fully seated, or the replenisher assembly is not functioning correctly.
Procedure (Page Pack)
1. Before a 500 page count is reached, a PIN number must be entered, otherwise the Procedure
machine will not operate after the 500 page limit. WARNING
2. If a bad PIN is entered 3 times consecutively, you must wait 24 hours before a good PIN Switch off the electricity to the machine. Disconnect the power cord from the customer
can be entered. supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
1. Enter Service Diagnostics, GP 1.
2. Select the Service Info tab.
3. Select dC330 Component Control.
4. Remove the affected toner cartridge (e.g., Cyan)
5. Select code 041-001 for the 24V low voltage power supply.
6. Select the code for an unaffected toner dispenser motor (e.g., Yellow: 93-004) and listen
to the gear movement. It should be smooth and relatively quiet. You can also look at the
toner gear movement on the left side of the machine where the toner is dispensed.
7. Turn off the unaffected toner dispenser motor (e.g., Cyan: 93-008).
8. Turn on the affected toner dispenser motor and listen to, or watch, the gear movement. If
there is clicking or chattering, the problem is related to the toner dispenser assembly.
9. Turn off the affected toner dispenser motor and the low voltage power supply.
10. Select Close to exit the routine.
11. Select Call Closeout to exit Service Diagnostics.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 28, GP 29 6-36 Xerox WorkCentre 6655 Color Multifunction Printer
GP 30 IP (ESS) Specifications USB

Support OS Table 1 USB Type-B Interface Port Specifications

The machine supports the following operation systems with the latest service pack.
Item Specification
• Microsoft Windows XP (32bit / 64bit)
Connector One Type-B connector
• Microsoft Windows Server 2003 (32bit / 64bit)
Protocol Hi-speed USB 2.0 compatible
• Microsoft Windows Vista (32bit / 64bit)
• Microsoft Windows Server 2008 (32bit / 64bit)
Table 2 USB Type-A Interface Port Specifications
• Microsoft Windows Server 2008 R2 (64bit)
Item Specification
• Microsoft Windows 7 (32bit / 64bit)
Connector One Type-A connector
• Mac OS X 10.3.9/10.4/10.5 (PPC/x86)
Protocol Hi-speed USB 2.0 compatible
• Mac OS X 10.6/10.7 (x86/x64)
Supported Class USB Mass Storage Class
• Red Hat Enterprise Linux 5/6 Desktop (x86)
• SUSE Linux Enterprise Desktop 10/11 (x86)
Ethernet
Interface Port
See the following tables for interface port specifications: Table 3 Ethernet Interface Port Specifications
Item Specification
• Table 1 USB Type-B Interface Port Specifications
• Table 2 USB Type-A Interface Port Specifications Connector One RJ-45 connector
• Table 3 Ethernet Interface Port Specifications Protocol 10 Base-T / 100 Base-TX / 1000 Base-T compatible
• Table 4 Wireless Interface Port Specifications
Wireless
Wireless adapter is required.

Table 4 Wireless Interface Porta Specifications

Item Specification
Connectivity Technology Wireless
Compliant Standards IEEE802.11 n/g/b
Band width 2.4 GHz
Data Transfer Rate IEEE802.11n mode: 65 Mbps
IEEE802.11g mode: 54, 48, 36, 24, 18, 12, 9, 6 Mbps
IEEE802.11b mode: 11, 5.5, 2, 1 M bps
Protocol See “Network Protocol” for details
Device Type Wireless Adapter
Security Protocol 64(40-bit key)/128(104-bit key)
WEP,WPA-PSK(TKIP,AES), WPA2-PSK(AES),
WPA-Enterprise(TKIP,AES), WPA2-Enterprise(AES)
(EAP method supports PEAPv0 only)
Wifi Protected Setup (WPS) Push Button Configuration (PBC), Personal Identification Num-
ber (PIN)
a. Connection to the Linux machine is not guaranteed. Only for infrastructure connection and
when Linux terminal is connected with Wired LAN connection.

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-37 GP 30
Network Protocol MIB
Printing Protocol The following MIBs are supported.
Printing protocol is shown in Table 5: • RFC1213 MIB-II
• RFC1514 HostResources
Table 5 Printing Network Protocol • RFC1759 Printer MIB
Maximum • Printer port monitor MIB
Protocol Transport Sessions Remarks • XCMI MIB
Port9100 TCP/IP 1 Windows XP/Server2003/Vista/ Server2008/ 7/ Decomposer
Server2008 R2
PDL
Mac OS X
The PDL decomposer specifications are shown in Table 7:
LPD TCP/IP 10 Windows XP/Server2003/Vista/ Server2008/ 7/
Server2008 R2
Table 7 PDL Decomposer Specifications
Mac OS X
Linux Interface
IPP/IPPS TCP/IP 5 Windows XP/Server2003/Vista/ Server2008/ 7/ USB I/F USB
Server2008 R2 PDL Net Storage Remark
Mac OS X
PCL 5c Yes a No
SMB TCP/IP 5 Windows XP/Server2003/Vista/ Server2008/ 7/
Server2008 R2 PCL 6 Yes No SupportOS: Windows XP/Server 2003/Vista/Server 2008/
Web Ser- TCP/IP 2 [Print]:Windows Vista / Server2008/ 7 / Server2008 R2 7 / Server2008 R2
vices on [Scan] : Windows Vista / 7 PostScript Yes No SupportOS: Mac OS X(10.3.9/10.4/10.5/10.6/10.7), Linux,
Devices Windows XP/Server2003/ Vista / Server2008 / 7 /
Server2008 R2

Control and Management Protocol FX-PDF Yes Yes Ver1.6

Control and management protocol is shown in Table 6: TIFF No Yes

JPEG No Yes
Table 6 Control and Management Network Protocol HBPL Yes No
Protocol Transport Application / Usage Remarks a. Yes: Supported No: Not supported

HTTP/HTTPS TCP/IP EWS

SMTP TCP/IP E-Mail Alert Font

SNMP v1/v2c/v3 UDP/IP Driver, Installer, Management SNMP v3 Default OFF 81 fonts and 36 Symbol Sets for PCL, 16 fonts for PDF and 136 fonts for PS3 are available as
built-in font.
DHCP UDP/IP IP setup
BOOTP UDP/IP IP setup Image Area
RARP TCP/IP IP management The image area specifications are shown in Table 8:
AutoIP TCP/IP Installer (Device discovery)
WINS TCP/IP IP setup Table 8 Image Area Specifications
Telnet TCP/IP IP management Area Definition Specification
Bonjour (mDNS) UDP/IP IP setup for Mac Usable Area (maximum paper size) 215.9a x 355.6 mm
LDAP TCP/IP Address Book,ColorTrack Pro1.1
Un-printable Area Default: 4.0 mm each from four edges of
LDAPS TCP/IP Address Book,ColorTrack Pro1.1 paper
DNS TCP/IP IP management Printable Area 207.7 x 347.4 mmb
DDNS TCP/IP IP management Default OFF
Print quality guaranteed Area Same as Printable Area
SNTP TCP/IP IP management Default OFF
a. Maximum width 220 mm for Envelope (DL LEF)
FTP TCP/IP IP management b. Maximum printable width of paper which paper width is more than 215.9 mm is 210.9 mm.
Therefore, Maximum printable area is 210.9 x 361.6 mm.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 30 6-38 Xerox WorkCentre 6655 Color Multifunction Printer
Job Control Virtual Mail Box
Print Cancel When the expansion memory (512MB) or HDD is attached, the Virtual Mail Box can be
selected only. There are two type of Virtual Mail Box.
A print job in progress can be cancelled from the operator panel.

Public Virtual Mail Box

Job Recovery
When print job is selected Public (password not needed) in the Stored Print menu on the driver,
When a print job fails due to a recoverable error such as paper jam, the machine recovers the
everyone can print job from operator panel if know user name or file name. And this print job
job automatically after the jammed paper is removed.
remains till deleted intentionally.
Job Timeout
Private Virtual Mail Box
When a print job is stopped for a certain period of time (time can be changed at the operator
When print job is selected Private (password needed) in the Stored Print menu on the driver,
panel, and unlimited also can be selected), the print data of the job is deleted as an error
everyone cannot print job from operator panel if unknown password. And this print job remains
till deleted intentionally.
ColorTrack Pro1.1
Color Track is a function to designate the use of color printing and control print volume per
Public Mail Box
user.
When the expansion memory (512MB) or HDD is attached, the Public Mail Box can be
selected only. When print job is selected “Public Mail Box” in the Job Type menu on the driver,
Only the administrator can set restrictions from the EWS.
everyone cannot print job from operator panel if unknown password. And this print job remains
The user name and password are embedded in the print job to confirm from whom the job is till deleted intentionally. The data on the memory is cleared when the printer is turned off. The
data on the HDD is not cleared even the printer is turned off.
sent. In addition, the user name and password are entered by user from the printer driver.

The printer can support maximum 50 accounts. Logging

Job Logging
When “ColorTrack Mode” is set to “Off”, “Automatic Color to Monochrome Print” setting applies The machine can retain up to 20 job logs.
to all users. When “ColorTrack Mode” is set to “Internal Mode” or “External Mode”, “Automatic
Color to Monochrome Print” setting applies to Registered Users with “Monochrome Print Only” Job log is printed instantly by user's request or automatically when the number of the retained
rights and Non Registered Users. job logs has reached 20.

Secure Print Job log includes the following information.

When the expansion memory (512MB) or HDD is attached, the printer holds print data in mem- • Job finish date and time
ory, including a user password (1~12 digits), a user name and a document name specified in • Job type (Print/File/FaxSend/FaxReceived/Copy/Scan)
the printer driver The data is not printed until the same password, user name and document
• Input interface (USB, LPD, Port9100)
name are specified at the printer UI. The data is cleared after being printed. The data remains
in the printer as long as it is not cleared. The data on the memory is cleared when the printer is • Document name (File name)
turned off. The data on the HDD is not cleared even the printer is turned off. • Output color
• User name/Host name
Proof Print • Number of printed sheets (Color, B&W)
When the expansion memory (512MB) or HDD is attached, only the proof print can be • Number of printed impressions (Color, B&W)
selected. When multiple sets of prints are specified in the printer driver, the printer prints only
• Paper size
the first set of the print data. Then the user can select whether the remaining sets are printed or
not (the remaining data is cleared) when the same user name and document name are entered • Result (Successful, Error, etc.)
at the Panel UI. The data remains in the printer as long as it is not cleared. The data on the Error Logging
memory is cleared when the printer is turned off. The data on the HDD is not cleared even the The machine can retain the following errors.
printer is turned off.
Fatal error: 42 errors at the maximum (10 errors at the minimum)
IP Filter
The user can select to accept or reject jobs for the specified IP address. Up to 5 IP addresses Jam error: 42 errors
can be specified. IP filter is available only to LPD and Port 9100.
The user can print the error log by the panel operation.

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-39 GP 30
Jam error log includes the following information: GP 31 IIT Specifications
• Date and time when jam has occurred
Scanner
Jam name Fatal error log includes the following information:
Scanner specifications are shown in Table 1:
• Date and time when error has occurred
• Error code Table 1 Scanner Specifications
Billing Counter
Item Specification
The PV counter counts the number of sheets printed properly (Similar to Odometer) (Table 9).
Scanning Method Platen: Document-fixed flatbed scanning method
Table 9 Billing Counter Specifications DADF: Carriage-fixed, document-feeding scanning method
(2- side scanning)
Counter Description
Optical Resolution 600 x 400 dpi (max)
Color PV (7 digits)(KCMY) Count the number of paper printed in color.
Light Source LED
B&W PV (7 digits)(K only) Count the number of paper printed in B&W.
Maximum Scanning Guarantee Platen: 215.9 mm x 355.6 mm (8.5” x 14”)
Total PV (7 digits) Count the total number of paper printed in color and B&W. Area DADF: 215.9 mm x 355.6 mm (8.5” x 14”)
Scanning Halftone Level Output from the CCD has the following halftone level.
ID Print Gray: 16bit x 2ch (CDD/EVEN)
User name can be printed. The printing position can be selected from upper right, upper left, Color: 16bit x 3ch (R/G/B)
lower right and lower left (Only for PCL6). The user selects using the operator panel whether
user name is printed or not and where it is printed.
Platen
Non-Genuine Mode Platen specifications are shown in Table 2:
When a Toner Cartridge has reached end-of-life, the printer stops accepting print requests
Table 2 Platen Specifications
(Toner Cartridge life is counted by the counter in CRUM). Taking into consideration that some
users use refilled Toner Cartridges they get from remanufacturers, the printer can accept a Item Description
print request by the user’ s panel operation even if the life of the Toner Cartridge has ended. Platen Glass Size: 220 mm x 360 mm (8.66” x 14.17”)
Settings of Toner Cartridge can be made separately (settings of Toner Cartridge can not be
(Flat glass area)
made by color). When the mode has changed so that the printer does not stop even after life of
Document Image Area (Platen mode) Max: 215.9 mm x 355.6 mm (8.5” x 14”)
Toner Cartridge ends, the printer displays a message on the operator panel to inform the user
of the mode change. When the printer operates in this mode, print image quality is not guaran-
teed. Also, remaining toner level is not displayed (as CRUM data can not be guaranteed). DADF
DADF specifications are shown in Table 3:

Table 3 DADF Specifications

Item Description
Document Condition Sheets without tears, wrinkles, or folds
Document Thickness Simplex: 50g/m2 - 125g/m2
Duplex: 60g/m2 - 125g/m2
Auto Document Size Detection None
Retention Angle / Open Angle Maximum open angle: ≤ 70 deg
of Platen Cover with DADF Platen cover can be retained at any angle: 15 ± 5 through
65 ± 5 deg
Platen cover self-weight drop angle: 15 ± 5 deg or less
Document Setting Center Registration
Document Tray Capacity 50 sheets of standard documents (document stack height is
≤ 8 mm)
Document shall not be creased/folded/swollen, etc.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 30, GP 31 6-40 Xerox WorkCentre 6655 Color Multifunction Printer
GP 32 Fax Specifications Table 1 Fax Mutual Communication Ability

Fax Send/Receive Buffer Characteristic Specification

FlashROM: 4MB Communication Control Proce- Comply with ITU-T recommendation T.30
dure
Connectable Network Nonstandard Function Not supported
The Fax can be connected to the following communication networks:
Transmission Time
• PSTN
Transmission time (Tp) of image data in G3 mode is as follows (Table 2).
• PBX
• Leased line (3.4 kHz/2-wire)
Resolution conversion is not performed during transmission, and density is normal.
The Fax cannot be connected to the following communication networks:
• ISDN communication network Specified value condition: ECM (No data error)
• VoIP network
Table 2 Fax Transmission Time
Mutual Communication Ability
14.4 Kbps 28.8 Kbps 33.6 Kbps
Fax mutual communication ability specifications are show in Table 1:
Chart (MMR) (MMR) (JBIG)a
Table 1 Fax Mutual Communication Ability IIEEJ No.4 Super Fine 56 sec. or less 29 sec. or less 22 sec. or less
Characteristic Specification Fine 26 sec. or less 13 sec. or less 1 sec. or less
Communication Mode Priority 1: ITU-T Super G3 Standard 19 sec. or less 10 sec. or less 7 sec. or less
Priority 2: ITU-T G3 ECM ITU-T No.1 Super Fine 30 sec. or less 15 sec. or less 12 sec. or less
Priority 3: ITU-T G3 Fine 15 sec. or less 8 sec. or less 6 sec. or less
Standard 11 sec. or less 6 sec. or less 4 sec. or less
Notes:
ITU: International Telecommunication Union FX English Sales Text Standard 7 sec. or less 4 sec. or less 2 sec. or less
ITU-T: ITU Telecommunication Standardization Sector FX Japanese Sales Text Standard 9 sec. or less 5 sec. or less 4 sec. or less
ECM: Error Correction Mode IIEEJ No.1 Standard 75 sec. or less 38 sec. or less 20 sec. or less
Modem Signal Processing The following communication standards are supported: a. Reference value
• V.34 (33.6 /31.2 /28.8 /26.4 /24 /21.6 /19.2 /16.8 /14.4
/12 /9.6 /7.2 /4.8 /2.4 kbps) Protocol Control Time
• V.17 (14.4 /12 /9.6 /7.2 kbps) When no data error occurs, protocol control time (Tm, Tn, Tu) is as shown in Table 3:
• V.29 (9.6 /7.2 kbps)
• V.27ter (4.8 /2.4 kbps) Table 3 Fax Protocol Control Time
Pixel Transmission Density (on B/W: Before: Between After
the supported transmission path) • R16 x 15.4 line/mm Mode messages: Tm messages: Tn messages: Tu Total
• R8 x 15.4 line/mm V.17, V.29, V.27ter 16.4 sec. or less 3.2 sec. or less 4.4 sec. or less 24.0 sec. or less
• R8 x 7.7 line/mm Standard Protocol
• R8 x 3.85 line/mm -V.34 9.9 sec. or less 1.0 sec. or less 0.9 sec. or less 11.8 sec. or less
• 400 x 400 pixel/25.4 mm Standard Protocol

• 300 x 300 pixel/25.4 mm

• 200 x 200 pixel/25.4 mm In G3 mode, when a data error that exceeds the threshold occurs, Tn increases by about 6
seconds.
• 200 x 100 pixel/25.4 mm
Color: Not supported In ECM (Error Correction Mode), according to the number of resending operations performed
Communication Image Size Fast scan direction size on communication: 215 mm ± 1% for the occurred data error, Tn increases by about Tn+1 seconds for each resending operation.
Halftone/Compression Method B/W: 1bit, JBIG, MMR, MR, MH encoding
Color: Not supported

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-41 GP 32
Throughput GP 33 Interior and Exterior Cleaning
The sending time is calculated in the following formula:
Purpose
Sending time = Call setup time + Tm + (N x Tp) + {(N-1) x Tn} + Tu (sec) Whenever cleaning any portion of the printer, follow the precautions given here.

(N: Send quantity; Tp: Image transmission time) General Precautions

WARNING
Cable Characteristics Do not handle the fuser components until they have cooled. Some fuser components
With pseudo cable from 0 to 15 km, the highest speed shall be guaranteed for communication operate at hot temperatures and can produce serious personal injury if touched
with V.17, V.29, and V.27ter. For V.34, 33600 bps communication speed shall be guaranteed
CAUTION
from 0 to 2 km, 31200 bps or higher communication speed from 2 to 9 km, and 19200 bps or
• Do not remove the covers or guards that are fastened with screws. You cannot maintain
higher communication speed from 9 to 15 km.
or service any parts that are behind these covers and guards. Do not attempt any mainte-
nance procedure that is not described in the documentation supplied with your printer
Communication Load Characteristics
• When cleaning your printer do not use organic or strong chemical solvents or aerosol
Data error characteristics for noise and cable loss during communication are as follows:
cleaners. Do not pour fluids directly into any area. Use supplies and cleaning materials
only as directed in this documentation.
Error rate (Error frequency/Total communication quantity) ≤ 1/500

Incoming Call Level • Do not place anything on top of the printer.

Under ideal conditions (flat line, no noise, and no other line stress), normal communication
• Do not leave the covers and doors open for any length of time, especially in well-lit
shall be guaranteed in the range from -3 through -43 dBm.
places. Light exposure can damage the imaging units.

For V.17, V.29, and V.27ter, the highest speed shall be guaranteed in the range from -6 through • Do not open covers and doors during printing.
-43 dBm. For V.34, 33600 bps communication speed shall be guaranteed in the range from -9 • Do not tilt the printer while it is in use.
through -19 dBm, and 16800 bps or higher communication speed in the range from -19 through • Do not touch the electrical contacts or gears. Doing so could damage the printer and
-43 dBm. cause the print quality to deteriorate.
• Ensure any parts removed during cleaning are replaced before you plug in the printer.
For V.34, normal communication shall be guaranteed in the range from -9 through -43 dBm.
Recommended Tools
• Toner vacuum cleaner
• Clean water
• Clean, dry, lint-free cloth
Cleaning Process
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Disconnect the power cord. Electricity can cause death or injury.
Moving parts can cause injury.
Clean the exterior of the printer once a month.
• Wipe the paper tray, output tray, control panel, and other parts with a damp, soft cloth.
• After cleaning, wipe with a dry, soft cloth.
• For stubborn stains, apply a small amount of mild detergent to the cloth and gently wipe
the stain off.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

GP 32, GP 33 6-42 Xerox WorkCentre 6655 Color Multifunction Printer
 CAUTION
Do not spray detergent directly on the printer. Liquid detergent could enter the printer through a
gap and cause problems. Never use cleaning agents other than water or mild detergent.
WARNING
Do not handle the fuser components until they have cooled. Some fuser components
operate at hot temperatures and can produce serious personal injury if touched.
Clean the interior of the printer regularly to prevent stains inside the printer that can deteriorate
printing quality. Clean the printer interior whenever you replace an imaging unit.

After clearing paper jams or replacing a toner cartridge, inspect the inside of the printer before
closing the printer covers.
• Remove any remaining pieces of paper or debris. For details, see Clearing Paper Jams.
• Remove any dust or stains with a dry, clean cloth.

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-43 GP 33
General Procedures 9/2014 Initial Issue - Xerox Internal Use Only
GP 33 6-44 Xerox WorkCentre 6655 Color Multifunction Printer
dC104 Usage Counters dC108 Software Version
Purpose Purpose
To display the various usage counters. To identify the version of the installed software on all major modules.

Procedure Procedure
1. Enter Service Diagnostics, GP 1. 1. Enter Service Diagnostics, GP 1.
2. Select the Service Info tab. 2. Select the Service Info tab.
3. Select dC104 Usage Counters. 3. Select dC108 Software Versions.
4. Select the relevant counters from the pull down menu. The dC108 Software Versions screen will display the software and version numbers
5. Select Close to exit the routine. installed on the machine.
6. Select Call Closeout to exit Service Diagnostics. 4. Select Close to exit the routine.
5. Select Call Closeout to exit Service Diagnostics.

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-45 dC104, dC108
dC120 Fault Counters dC122 Fault History
Purpose Purpose
To view the faults raised by the machine. Fault Counters records the number of occurrences of To view faults in chronological order and more detail than is shown in dC120 Fault Counters.
a fault, allows the counters to be sorted by occurrences and allows a specific fault to be found
by chain. Procedure
1. Enter Service Diagnostics, GP 1.
Procedure 2. Select the Service Info tab.
1. Enter Service Diagnostics, GP 1.
3. Select dC122 Fault History.
2. Select the Service Info tab.
4. The dC122 Fault History screen is displayed with the last 40 faults shown in chronological
3. Select dC120 Fault Counters. order. The most recent fault is at the top of the list.
NOTE: There will be a delay while the machine retrieves the fault counter data. 5. To observe the details of the fault, select the fault and select Details on the pop-up win-
dow. Select Close to return to the fault table.
4. A list of faults that have occurred is displayed.
6. Select Close to exit the routine.
• The list can be sorted by number of occurrences and to include zero occurrences.
7. Select Call Closeout to exit Service Diagnostics.
Selecting these options will resort the list upon selection.

NOTE: When selecting zero occurrences there may be a delay as the list is reconfig-
ured.

• The list can be sorted by chain.

a. Select the chain field.
b. Enter a 3-digit chain number on the numeric keypad.
c. Select Find.
5. Select Close to exit the routine.
6. Select Call Closeout to exit Service Diagnostics.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

dC120, dC122 6-46 Xerox WorkCentre 6655 Color Multifunction Printer
dC131 NVM Read/Write Table 1 NVM Parameter Values

Purpose NVMID Name Default Minimum Maximum

To review and modify values stored in NVM on the IP Board. 740-032 hwerr_history_2_1 0 0 255
740-033 hwerr_history_2_2 0 0 255
Description 740-034 hwerr_history_2_3 0 0 255
NVM parameters are identified by an NVMID in the form XXX-XXX. Refer to Table 1 for NVM 740-035 hwerr_history_2_4 0 0 255
parameters. 740-036 hwerr_history_2_5 0 0 255
740-037 hwerr_history_2_6 0 0 255
Procedure 740-038 hwerr_history_2_7 0 0 255
1. Enter Service Diagnostics, GP 1.
740-500 NV Limitation 0 0 255
2. Select the Adjustments tab.
742-008 side_reg_factory_0_0 -6 -32 32
3. Select dC131 NVM Read/Write.
742-009 side_reg_factory_0_1 -6 -32 32
4. Select the appropriate NVMID.
742-010 side_reg_factory_0_2 -6 -32 32
5. View or edit the NVM value as necessary.
742-011 side_reg_factory_0_3 -6 -32 32
6. When the values have been changed, cycle system power to verify changes made to
742-012 side_reg_factory_0_4 -6 -32 32
NVM.
742-013 side_reg_factory_1_0 -3 -32 32
Table 1 NVM Parameter Values 742-014 side_reg_factory_1_1 -3 -32 32
742-015 side_reg_factory_1_2 -3 -32 32
NVMID Name Default Minimum Maximum
742-016 side_reg_factory_1_3 -3 -32 32
740-002 NVM Major 1 0 1
742-017 side_reg_factory_1_4 -3 -32 32
740-003 NVM Minor 5 0 5
742-516 Jam History 0 0 255
740-004 NVM Patch 0 0 0
744-009 FusingInspectionMode 1 0 255
740-005 NVM Test 0 0 0
744-015 FuserControlTempPlainPaperL - Full Speed 0 -9 9
740-006 Factory Option Setting 0 0 255
744-016 FuserControlTempPlainPaperH - Full Speed 0 -9 9
740-007 IOT Config 0 0 255
744-017 FuserControlTempThicker - Full Speed 0 -9 9
740-014 Enable Duplex 1 0 1
744-018 FuserControlTempRecycled - Full Speed 0 -9 9
740-015 hwerr_history_0_0 0 0 255
744-019 FuserControlTempHeavierPaperL- Full 0 -9 9
740-016 hwerr_history_0_1 0 0 255
Speed
740-017 hwerr_history_0_2 0 0 255 744-020 FuserControlTempHeavierPaperH - Full 0 -9 9
740-018 hwerr_history_0_3 0 0 255 Speed
740-019 hwerr_history_0_4 0 0 255 744-021 FuserControlTempLabelL - Full Speed 0 -9 9
740-020 hwerr_history_0_5 0 0 255 744-022 FuserControlTempLabelH - Full Speed 0 -9 9
740-021 hwerr_history_0_6 0 0 255 744-023 Reserved - - -
740-022 hwerr_history_0_7 0 0 255 744-024 FuserControlTempEnvelope - Full Speed 0 -9 9
740-023 hwerr_history_1_0 0 0 255 744-025 FuserControlTempPostcard - Full Speed 0 -9 9
740-024 hwerr_history_1_1 0 0 255 744-026 FuserControlTempCoatedPaperL - Full 0 -9 9
740-025 hwerr_history_1_2 0 0 255 Speed
740-026 hwerr_history_1_3 0 0 255 744-027 FuserControlTempCoatedPaperM - Full 0 -9 9
740-027 hwerr_history_1_4 0 0 255 Speed
740-028 hwerr_history_1_5 0 0 255 744-028 FuserControlTempCoatedPaperH - Full 0 -9 9
Speed
740-029 hwerr_history_1_6 0 0 255
740-030 hwerr_history_1_7 0 0 255 744-032 FuserControlTempPlainPaperL - Half Speed 0 -9 9

740-031 hwerr_history_2_0 0 0 255 744-033 FuserControlTempPlainPaperH - Half Speed 0 -9 9

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-47 dC131
 Table 1 NVM Parameter Values Table 1 NVM Parameter Values
NVMID Name Default Minimum Maximum NVMID Name Default Minimum Maximum
744-034 FuserControlTempThicker - Half Speed 0 -9 9 744-074 heat_temp_print_user_2_0 0 -9 9
744-035 FuserControlTempRecycled - Half Speed 0 -9 9 744-075 heat_temp_print_user_2_1 0 -9 9
744-036 FuserControlTempHeavierPaperL - Half 0 -9 9 744-076 heat_temp_print_user_2_2 0 -9 9
Speed 744-077 heat_temp_print_user_2_3 0 -9 9
744-037 FuserControlTempHeavierPaperH - Half 0 -9 9 744-078 heat_temp_print_user_2_4 0 -9 9
Speed
744-079 heat_temp_print_user_2_5 (PhotoHeavier- 0 -9 9
744-038 FuserControlTempLabelL - Half Speed 0 -9 9 PaperL)
744-039 FuserControlTempLabelH - Half Speed 0 -9 9 744-080 heat_temp_print_user_2_6 (PhotoHeavier- 0 -9 9
744-040 Reserved - - - PaperM
744-041 FuserControlTempEnvelope - Half Speed 0 -9 9 744-081 heat_temp_print_user_2_7 0 -9 9
744-042 FuserControlTempPostcard - Half Speed 0 -9 9 744-082 heat_temp_print_user_2_8 0 -9 9
744-043 FuserControlTempCoatedPaperL - Half 0 -9 9 744-083 heat_temp_print_user_2_9 0 -9 9
Speed 744-084 heat_temp_print_user_2_10 0 -9 9
744-044 FuserControlTempCoatedPaperM - Half 0 -9 9 744-106 Fuser Print Volume Near 180,000 0 4294967295
Speed 744-110 Fuser Print Volume End 200,000 0 4294967295
744-045 FuserControlTempCoatedPaperH - Half 0 -9 9
744-118 Lamp On Time Near 750,000 0 4294967295
Speed
744-122 Lamp On Time End 780,000 0 4294967295
744-050 heat_temp_print_user_0_0 0 -9 9
746-020 cmd_tnr_refresh 0 0 255
744-051 heat_temp_print_user_0_1 0 -9 9
746-021 cmd_btr_ppm_dn 0 0 1
744-052 heat_temp_print_user_0_2 0 -9 9
746-023 Initial Install CRU 0 0 1
744-053 heat_temp_print_user_0_3 0 -9 9
746-108 cmd_deve_refresh 0 0 1
744-054 heat_temp_print_user_0_4 0 -9 9
746-201 Belt Print Volume Near 180,000 0 4294967295
744-055 heat_temp_print_user_0_5 0 -9 9
746-205 Belt Print Volume End 200,000 0 4294967295
744-056 heat_temp_print_user_0_6 0 -9 9
746-500 UserCorrectBTRPlainL 6 1 16
744-057 heat_temp_print_user_0_7 0 -9 9
746-501 UserCorrectBTRPlainH 6 1 16
744-058 heat_temp_print_user_0_8 0 -9 9
746-502 UserCorrectBTRThicker 6 1 16
744-059 heat_temp_print_user_0_9 0 -9 9
746-503 UserCorrectBTRRecycled 6 1 16
744-060 heat_temp_print_user_0_10 0 -9 9
746-504 UserCorrectBTRHeavierL 6 1 16
744-061 heat_temp_print_user_0_11 0 -9 9
746-505 UserCorrectBTRHeavierH 6 1 16
744-062 heat_temp_print_user_1_0 0 -9 9
746-506 UserCorrectBTRLabelL 6 1 16
744-063 heat_temp_print_user_1_1 0 -9 9
746-507 UserCorrectBTRLabelH 6 1 16
744-064 heat_temp_print_user_1_2 0 -9 9
746-508 UserCorrectBTRReserved 6 1 16
744-065 heat_temp_print_user_1_3 0 -9 9
746-509 UserCorrectBTREnvelope 6 1 16
744-066 heat_temp_print_user_1_4 0 -9 9
746-510 UserCorrectBTRPostcard 6 1 16
744-067 heat_temp_print_user_1_5 0 -9 9
746-511 UserCorrectBTRCoatedPaperL 6 1 16
744-068 heat_temp_print_user_1_6 0 -9 9
746-512 UserCorrectBTRCoatedPaperM 6 1 16
744-069 heat_temp_print_user_1_7 0 -9 9
746-513 UserCorrectBTRCoatedPaperH 6 1 16
744-070 heat_temp_print_user_1_8 0 -9 9
746-515 Altitude Mode 0 0 7
744-071 heat_temp_print_user_1_9 0 -9 9
746-516 UserCorrectTransferPower K color 6 1 16
744-072 heat_temp_print_user_1_10 0 -9 9
746-517 UserCorrectTransferPower YMC color 6 1 16
744-073 heat_temp_print_user_1_11 0 -9 9
746-526 HighlandMode 0 0 7

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

dC131 6-48 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 1 NVM Parameter Values dC132 Serial Number Restore
NVMID Name Default Minimum Maximum Purpose
746-531 Deve CRU Pixel counter 0 0 4294967295 Serial number data is stored at three locations:
746-535 Deve CRU Drum Motor round time 0 0 4294967295 • MCU Board
749-528 Fusing Jam Prevention Function 0 0 (invalid) 1 (valid) • IP Board
752-006 ATC Barcode 85 0 255 • IIT Control Board
752-026 cnt_empty_chk_sw 1 0 255 This procedure is used to restore serial number data integrity in the event serial number data
752-570 Toner Cartridge PV counter 0 0 4294967295 becomes corrupt.
766-003 Enable CRUM ID Check 0 0 255
It is not necessary to run this procedure if a single board is replaced; if these boards are
766-046 Toner OEM Code 130 0 255
replaced one-at-a-time, the printer automatically synchronizes the data on the new board. It is
766-050 XERO OEM Code 130 0 255 only required to perform the procedure if the removal/replacement procedure is not followed
correctly.

FAX NVM Values

Initial Action
NVM Description Default On Problem
Check fault history for communications faults. Intra-board communications faults can prevent
200-079 Compress TypeLine1 TX 5 4 MMR compression / 3MR serial number synchronization and must be addressed before proceeding.
200-081 Compress TypeLine1 RX 5 4 MMR compression / 3MR
200-087 Line 1 Sending speed in bps 3 11= 14,4 / 13= 9600 / 15= 4800
Procedure
200-089 Line 1 Reception speed in bps 3 11= 14,4 / 13= 9600 / 15= 4800
200-097 ECM (Error Correction Mode) 1 0 = Disable Part 1 - Request serial number passcode.
200-105 Protocol Report printed on NOTE: It may take up to 24 hours to receive a password from ACAST.
communication error 0 1 = Auto print on Error
200-203 Fax Auto Answer Delay 1. Enter Service Diagnostics, GP 1.
(also available in Tools) 0 12 if required to answer after 3 rings 2. Select the Maintenance tab.
200-402 T0 Timeout 55 110 seconds 3. Select dC132.
200-404 Sending Level in Db 12 9 or per request CAUTION
203-105 V34 to V21 Fallback Timing 40 60 seconds After the Unique Machine Identifier is generated, DO NOT touch the Generate New Identifier
Code button again, as this invalidates the provided passcode.
4. Select Generate New Identifier Code. Record the Unique Machine Identifier

NOTE: Follow all instructions included in the form. You must complete the form, print it, obtain
required signatures and data, then scan it.

5. Use the attached ACAST Serial Number Reinitialization Request Form.

6. Read instructions and warning in the form very carefully.
7. Note that there is a cost for this service.
8. Fill all the information. Print the completed form. Have your budget center manager sign
the form. If any information is missing, we cannot perform the service.
9. Have National Technical Specialist (NTS, RSE or FE) forward a copy of service log and
proof of the location of the machine to acst01@xerox.com. This information must indicate
machine location, customer name, and address.
Proof may be screen capture of NTS customer support database (account management
database), FWSS, ICSS, DFM BT, VQMS, VALE, STPR, etc. The information on the proof
must match information on the form.
10. Scan the completed form and email to acst01@xerox.com.

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-49 dC131, dC132
Part 2 - Restore serial number dC135 CRU/HFSI Status
CAUTION
Purpose
DO NOT touch the Generate Id button, as this will invalidate the Password that will be pro-
To view and reset counters for customer replacement units.
vided.
1. Enter Service Diagnostics, GP 1. NOTE: dC135 is also available from the Maintenance tab.
2. Select the Maintenance tab.
3. Select Enter Passcode. Procedure
4. Enter the passcode received from ACAST and touch Enter. 1. Enter service mode, GP 1.
5. Exit Service Diagnostics. 2. Select the Service Info tab.
6. Cycle system power. 3. Select dC135 CRU / HFSI. Current counts for the Fuser and Transfer Roller are listed.
Serial numbers are now synchronized. 4. To reset the CRU counter:
a. Select the item.
b. Select Reset Counter.
c. Select Reset to confirm.
5. Select Close to exit the routine.
6. Select Call Closeout to exit service mode.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

dC132, dC135 6-50 Xerox WorkCentre 6655 Color Multifunction Printer
dC140 Analog Monitor Table 2 Analog Component Output Values

Purpose ID Component Name Range Comments

Monitor or adjust specific analog components. The nominal range and, when monitoring is 46 - 004 DA_DBAC 0 - 255 Writable
active, the current value is displayed. Values are updated at least every second to allow the 46 - 005 DA_DBDC 0 - 255 Writable
component state to be monitored. Refer to Table 1 and Table 2. 46 - 006 DA_CR 0 - 255 Writable
93 - 001 DA_DISP_MOT 0 - 255 Writable
Procedure
1. Enter service mode, GP 1.
2. Select the Diagnostics tab.
3. Select dC140 Analog Monitor.
4. Scroll to display the available analog components.
5. Select the required item from the table.
6. A popup menu will be displayed, select start to confirm.
• The table will display a status against the selected component.
• In service mode the components are not active so the value will not change.
• To check the component either manipulate the component manually or make a note
of the value, exit Analog Monitor go to dC330 Component Control, to run the compo-
nent and return to dC140 Analog Monitor.
• Multiple components may be selected.
• To stop monitoring select the required component and select stop.
• Selecting Close will stop monitoring all components.
7. Select Close to return to the Diagnostic Routine window.
8. Select Call Closeout to exit service mode.

Table 1 Analog Component Input Values

ID Component Name Range Comments
010.200 Fusing Main STS Sensor 0 - 1023 Monitor only
010.201 Fusing Sub STS Sensor 0 - 1023 Monitor only
010.202 Fusing NC Sensor Voltage Difference 0 - 1023 Monitor only
010.203 Fusing STS Sensor 0 - 1023 Monitor only
046.200 BTR Current Monitor 0 - 1023 Monitor only
061.200 ROS Temperature Sensor 0 - 1023 Monitor only
091.200 Environment Sensor Temperature 0 - 1023 Monitor only
091.201 Environment Sensor Humidity 0 - 255 Monitor only
092.200 CTD Sensor Voltage 1 0 - 1023 Monitor only

Table 2 Analog Component Output Values

ID Component Name Range Comments
46 - 001 DA_VREF 0 - 255 Writable
46 - 002 DA_TR+ 0 - 255 Writable
46 - 003 DA_TR- 0 - 255 Writable

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-51 dC140
dC188 Service Mode Exit dC301 NVM Initialization
Purpose General
To exit Service Diagnostics. The purpose of the NVM initialization routine is to reset the values of all applicable NVM
parameters to default. There are three domains and three types of initialization.
Procedure
The three machine domains are:
1. Enter service mode, GP 1.
• Copier
2. Select Call Closeout to exit service mode.
• Network Controller
• Fax

NOTE: The network controller does not contain any NVM values accessible. Therefore,
no NVM initialization procedures are for the network controller are provided here.

The three types of initialization are:

• User data That data which defines the way the customer prefers that the equipment oper-
ates (i.e. customer preference, SA/KO settings, configuration).
• System data That data which defines the way the equipment operates in relation to its
environment (i.e. machine variables).
• All data: That additional data (on top of System and User data) which may be initialized
without significantly impacting the machines operation. (i.e. machine variables, SA/KO
settings, Fault log).
Copier NVM Initialization
Purpose
To reset specific or all variable NVM (with the exception of protected NVM for which a pass-
word is required) to default values.

NOTE: Initialization does not affect the billing counter and accounting.

Procedure
1. Save the NVM to disk, refer to NVM Save and Restore, dC361.
2. Enter service mode, GP 1.
3. Select the Adjustments tab.
4. Select dC301 NVM Initialization.
5. Select Copier.
6. Select the sub-domain. Refer to Table 1 for the functions in each sub domain.
• Copy Controller
• Scanner
• Print Engine
• Finisher
7. Select the NVM data to reset. Refer to Table 1 for the functions that are reset to default.
• User
• System
• All
8. Select Initialize, when the pop-up window appears confirm the request.
A message will be displayed to indicate successful completion.
9. Exit dC301 NVM initialization.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

dC188, dC301 6-52 Xerox WorkCentre 6655 Color Multifunction Printer
10. Select Call Closeout to exit service mode. Fax NVM Initialization
11. Reboot the machine for the changes to take effect. Purpose
To return to default the fax NVM settings that are stored on the fax card. Refer to Fax Docu-
Table 1 Copier NVM
ment.
User Data System All Data
Sub-Domain NVM Initialization Type NVM Data NVM NVM Procedure
Copy Controller All N N N 1. Save the NVM to disk, refer to NVM Save and Restore, dC361.
Billing Counter N N N 2. Enter service mode, GP 1.
System Usage Counter Y 3. Select the Adjustments tab.
Fault Counter (1) Y 4. Select dC301 NVM Initialization.
Diagnostic Counter (1) Y 5. Select Fax.
SA / KO Setting Y Y 6. Select the NVM data to reset. Refer to Table 2 for the functions that are reset to default.
Fault Log Y • User
Configuration Y • System
Diagnostics Y • All
Debug Y NOTE: Deletion of all data.
Machine Variable Y Y
7. Select Initialize when the pop-up window appears confirm the request.
Machine Variable Xero Y Y
8. A message is displayed to indicate successful completion.
Machine Variable Registration Y Y
9. Exit dC301 NVM Initialization.
Machine Variable Paper Path Y Y
10. Select Call Closeout to exit service mode.
Machine Variable DADH Y Y
11. Cycle system power for the changes to take effect.
Machine Variable Platen Y Y
Auditron Y Y Table 2 Fax NVM
IP N N N User Data System Data
Crash Recovery Type Y NVM Initialization Type NVM NVM All Data NVM
Completed Job Log Y Controlled Access (2) Y
Controlled Access N N N Completed Job Log Y (Y)
Machine Speed, Market Region
Auditron Y (Y)
JBA Database Y Y
Configuration Y Y (Y)
JBA Configuration Y Y
SA / KO Setting Y (Y)
Auditron Configuration Y Y
Xerox Standard Accounting N N N
(2) The Fax functionality for the NVM All Data Initialization will result in all of the NVM data
HFSI Counter N N N
being deleted, which is why the other categories are shown in brackets.
Scanner NVM Machine Variable Y Y

SA / KO Setting Y Y
Configuration Y
Printer NVM Machine Variable Y Y
SA / KO Setting Y Y
Configuration Y

(1) These counters are reset using the Reset Counters option provided in the Call Closeout
feature.

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-53 dC301
dC305 UI Test dC312 Network Echo Test
Purpose Purpose
To test Control panel display function. To check network connectivity.

1. Enter diagnostics, refer to GP 1. Procedure

2. Select Printer Routines, the DC305 NVRAM Initialization. 1. Enter Service Mode, GP 1.
3. Select from LDCD test or a complete UI test. 2. Select the Diagnostics tab.
The display turns black as data is written to the display buffer. For the complete test, following 3. Select dC312 Network Echo Test.
the LCD test, the test continues prompting for each Control Panel button.
4. Select the required protocol from TCP / IP, AppleTalk or Novel or IPX.
5. Select Start Test.
The status region at the top of the user interface will indicate that the test is in progress.
The status region will indicate the result of the test before returning to the previous dis-
play.
6. Select Close to exit the routine.
7. Select Call Closeout to exit Service Mode.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

dC305, dC312 6-54 Xerox WorkCentre 6655 Color Multifunction Printer
dC330 Component Control NOTE: The actual signal as measured with a service meter will not necessarily be the same as
the logic state shown on the Control Panel, especially where the output is inverted. When test-
Purpose ing components using these control codes, look for a change in state, not for a high or low.
To display status of input components e.g. sensors, and energize output components e.g.
The displayed status of the input component can be changed by causing the component status
motors, solenoids.
to change, e.g. operating a sensor with a sheet of paper.
Description Table 1 Chain 5 Component Input Codes
Input and output component control codes are entered into the Component Control Table on
Chain-Link Component Name State Comments
the Control Panel, and then energized individually or in permitted groups.
005.230 Feed Sensor On / Off
CAUTION 005.231 DADF Input Tray Sensor On / Off Media in DADF Input Tray
The +24 VDC low voltage power supply (code 041.001) must be turned On and Off when test- 005.232 DADF Top Cover Sensor On / Off DADF Top Cover open
ing motors, solenoids, and clutches. Turn on the +24 VDC supply before testing motors, sole-
005.233 Stage Sensor On / Off
noids, and clutches. To avoid damage to the printer, turn off the +24 VDC supply after testing
005.234 Legal Paper Sensor On / Off Legal media in DADF Tray
motors, solenoids, and clutches.

NOTE: Test display names do not necessarily match part names used in this manual. Where
possible, test descriptions identify the part as named in the manual.

Component codes are listed in these tables: Table 2 Chain 10 Component Input Codes
• Component Input Codes Chain-Link Component Name State Comments
– Table 1 Chain 5 Component Input Codes 010.200 Fusing Relay Enable On / Off
– Table 2 Chain 10 Component Input Codes 010.201 Fusing Fuse Sensor On / Off
– Table 3 Chain 40 Component Input Codes
– Table 4 Chain 60 Component Input Codes
– Table 5 Chain 70 Component Input Codes
– Table 6 Chain 90 Component Input Codes Table 3 Chain 40 Component Input Codes
• Component Output Codes Chain-Link Component Name State Comments
– Table 7 Chain 5 Component Output Codes 041.300 Side Cover Interlock Switch On / Off
– Table 8 Chain 10 Component Output Codes 041.301 Rear Cover Interlock Switch On / Off
– Table 9 Chain 20 Fax Line 1 Component Output Codes 041.302 Front Cover Sensor On / Off
– Table 10 Chain 20 Fax Line 2 Component Output Codes 042.200 LVPS Fan Fail On / Off Alarm signal
– Table 11 Chain 40 Component Output Codes
– Table 12 Chain 60 Component Output Codes
– Table 13 Chain 70 Component Output Codes
– Table 14 Chain 90 Component Output Codes Table 4 Chain 60 Component Input Codes
– Table 15 Chain 715 Component Output Codes Chain-Link Component Name State Comments
Input Components 062.212 Home Position Sensor On / Off
When the appropriate code is entered, component status appears on the Control Panel. 062.300 Platen Cover Sensor On / Off

Table 5 Chain 70 Component Input Codes

Chain-Link Component Name State Comments
071.100 MSI (Bypass Tray) No Paper Sensor On / Off
071.101 Tray 1 No Paper Sensor On / Off

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-55 dC330
 Table 5 Chain 70 Component Input Codes
Chain-Link Component Name State Comments
Table 9 Chain 20 Fax Line 1 Component Output Codes
071.102 MSI (Bypass Tray) Detect Sensor On / Off
Chain-Link Component Name State Comments
071.103 Registration Sensor On / Off
020.010 Single Tone 0hz Line 1 On / Off
071.104 Exit Sensor On / Off
020.011 Single Tone 400hz Line 1 On / Off
071.105 Full Stack Sensor On / Off
020.012 Single Tone 1100hz Line 1 On / Off
071.109 Option Feeder 1 Size Sensor0 On / Off
020.013 Single Tone 1300hz Line 1 On / Off
071.110 Option Feeder 1 Size Sensor1 On / Off
020.014 Single Tone 1650hz Line 1 On / Off
071.111 Option Feeder 1 Size Sensor2 On / Off
020.015 Single Tone 1850hz Line 1 On / Off
071.115 Option Feeder 1 No Paper Sensor On / Off
020.016 Single Tone 2100hz Line 1 On / Off
071.117 Option Feeder 1 Path Sensor On / Off
020.017 ANSAM Line 1 On / Off
071.200 Main Motor Alarm On / Off
020.018 CI Line 1 On / Off
071.201 Sub (Paper Transport) Motor Alarm On / Off
020.020 DTMF # Line 1 On / Off
071.202 Option Feeder 1 Motor Alarm On / Off
020.021 DTMF * Line 1 On / Off
020.022 DTMF 0 Line 1 On / Off
020.023 DTMF 1 Line 1 On / Off
Table 6 Chain 90 Component Input Codes 020.024 DTMF 2 Line 1 On / Off
Chain-Link Component Name State Comments 020.025 DTMF 3 Line 1 On / Off
093.200 Developer Motor Alarm On / Off 020.026 DTMF 4 Line 1 On / Off
094.202 Waste Toner Box Full Sensor On / Off 020.027 DTMF 5 Line 1 On / Off
020.028 DTMF 6 Line 1 On / Off
Output Components 020.029 DTMF 7 Line 1 On / Off
020.030 DTMF 8 Line 1 On / Off
When the appropriate code is entered, the component is activated and its status appears on
the Control Panel. 020.031 DTMF 9 Line 1 On / Off
020.032 DTMF A Line 1 On / Off
Table 7 Chain 5 Component Output Codes 020.033 DTMF B Line 1 On / Off
Chain-Link Component Name State Comments 020.034 DTMF C Line 1 On / Off
005.091 Pick Motor On / Off Forward 020.035 DTMF D Line 1 On / Off
005.092 Pick Motor On / Off Reverse 020.040 V.21 300bps Line 1 On / Off
005.093 Feed Motor On / Off Forward 020.041 V.27ter 2400bps Line 1 On / Off
005.094 Feed Motor On / Off Reverse 020.042 V.27ter 4800bps Line 1 On / Off
020.043 V.29 7200bps Line 1 On / Off
020.044 V.29 9600bps Line 1 On / Off
020.045 V.17 7200bps Line 1 On / Off
Table 8 Chain 10 Component Output Codes 020.046 V.17 9600bps Line 1 On / Off
Chain-Link Component Name State Comments 020.047 V.17 12000bps Line 1 On / Off
010.001 Fusing Relay On / Off 020.048 V.17 14400bps Line 1 On / Off
020.049 V.34 2400bps Line 1 On / Off
020.050 V.34 4800bps Line 1 On / Off
020.051 V.34 7200bps Line 1 On / Off
020.052 V.34 9600bps Line 1 On / Off
020.053 V.34 12000bps Line 1 On / Off

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

dC330 6-56 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 9 Chain 20 Fax Line 1 Component Output Codes Table 10 Chain 20 Fax Line 2 Component Output Codes
Chain-Link Component Name State Comments Chain-Link Component Name State Comments
020.054 V.34 14400bps Line 1 On / Off 020.112 V.27ter 4800bps Line 2 On / Off
020.055 V.34 16800bps Line 1 On / Off 020.113 V.29 7200bps Line 2 On / Off
020.056 V.34 19200bps Line 1 On / Off 020.114 V.29 9600bps Line 2 On / Off
020.057 V.34 21600bps Line 1 On / Off 020.115 V.17 7200bps Line 2 On / Off
020.058 V.34 24000bps Line 1 On / Off 020.116 V.17 9600bps Line 2 On / Off
020.059 V.34 26400bps Line 1 On / Off 020.117 V.17 12000bps Line 2 On / Off
020.060 V.34 28800bps Line 1 On / Off 020.118 V.17 14400bps Line 2 On / Off
020.061 V.34 31200bps Line 1 On / Off 020.119 V.34 2400bps Line 2 On / Off
020.062 V.34 33600bps Line 1 On / Off 020.120 V.34 4800bps Line 2 On / Off
020.121 V.34 7200bps Line 2 On / Off
020.122 V.34 9600bps Line 2 On / Off
020.123 V.34 12000bps Line 2 On / Off
Table 10 Chain 20 Fax Line 2 Component Output Codes
020.124 V.34 14400bps Line 2 On / Off
Chain-Link Component Name State Comments
020.125 V.34 16800bps Line 2 On / Off
020.080 Single Tone 0hz Line 2 On / Off 020.126 V.34 19200bps Line 2 On / Off
020.081 Single Tone 400hz Line 2 On / Off 020.127 V.34 21600bps Line 2 On / Off
020.082 Single Tone 1100hz Line 2 On / Off 020.128 V.34 24000bps Line 2 On / Off
020.083 Single Tone 1300hz Line 2 On / Off 020.129 V.34 26400bps Line 2 On / Off
020.084 Single Tone 1650hz Line 2 On / Off 020.130 V.34 28800bps Line 2 On / Off
020.085 Single Tone 1850hz Line 2 On / Off 020.131 V.34 31200bps Line 2 On / Off
020.086 Single Tone 2100hz Line 2 On / Off 020.132 V.34 33600bps Line 2 On / Off
020.087 ANSAM Line 2 On / Off
020.088 CI Line 2 On / Off
020.090 DTMF # Line 2 On / Off
020.091 DTMF * Line 2 On / Off Table 11 Chain 40 Component Output Codes

020.092 DTMF 0 Line 2 On / Off Chain-Link Component Name State Comments

020.093 DTMF 1 Line 2 On / Off 041.001 Low Voltage Power Supply 24V On / Off
020.094 DTMF 2 Line 2 On / Off 042.001 Main Fan On / Off Normal speed
020.095 DTMF 3 Line 2 On / Off 042.002 Main Fan On / Off Half speed
020.096 DTMF 4 Line 2 On / Off
020.097 DTMF 5 Line 2 On / Off
020.098 DTMF 6 Line 2 On / Off
020.099 DTMF 7 Line 2 On / Off Table 12 Chain 60 Component Output Codes

020.100 DTMF 8 Line 2 On / Off Chain-Link Component Name State Comments

020.101 DTMF 9 Line 2 On / Off 061.001 ROS (Laser Unit) Motor On / Off
020.102 DTMF A Line 2 On / Off 062.002 IIT Exposure Lamp On / Off
020.103 DTMF B Line 2 On / Off 062.005 FB Motor On / Off Forward
020.104 DTMF C Line 2 On / Off 062.006 FB motor On / Off Reverse
020.105 DTMF D Line 2 On / Off
020.110 V.21 300bps Line 2 On / Off
020.111 V.27ter 2400bps Line 2 On / Off

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Xerox WorkCentre 6655 Color Multifunction Printer 6-57 dC330
 Table 15 Chain 715 Component Output Codes
Chain-Link Component Name State Comments
Table 13 Chain 70 Component Output Codes
715-051 Platen SS Magnification Adjustment On / Off
Chain-Link Component Name State Comments
715-053 Platen PRadjF On / Off
071.001 Main Motor On / Off Normal speed
715-058 Slow Scan Magnification Adj. Color On / Off
071.002 Main Motor On / Off Half speed
715-059 Slow Scan Magnification Adj. B&W On / Off
071.004 Sub (Paper Transport) Motor On / Off Normal speed
715-061 DADF Side Registration Face Up On / Off
071.005 Sub (Paper Transport) Motor On / Off Half speed
715-062 DADF Side Registration Face Down On / Off
071.007 MSI (Bypass Tray) Feed Solenoid On / Off
715-063 DADF Lead Edge Registration FU Simplex On / Off
071.008 Tray 1 Feed Clutch On / Off
715-064 DADF Lead Edge Registration FU Duplex On / Off
071.009 Take Away 2 Clutch On / Off
715-065 DADF Lead Edge Registration Face Down On / Off
071.010 Registration Clutch On / Off
715-066 DADF Slow Scan Magnification Color On / Off
071.011 Exit Clutch On / Off
715-067 DADF Slow Scan Magnification B&W On / Off
071.012 Exit Clutch 2 On / Off
071.013 Duplex Clutch On / Off
071.014 Option Feeder 1 Motor On / Off Normal speed
071.015 Option Feeder 1 Motor On / Off Half speed
071.020 Option Feeder 1 Feed Clutch On / Off
071.022 Option Feeder 1 Take Away Clutch On / Off

Table 14 Chain 90 Component Output Codes

Chain-Link Component Name State Comments
093.001 Developer Motor On / Off Normal speed
093.002 Developer Motor On / Off Half speed
093.004 Yellow Toner Dispense Motor On / Off Normal speed
093.005 Yellow Toner Dispense Motor On / Off Half speed
093.006 Magenta Toner Dispense Motor On / Off Normal speed
093.007 Magenta Toner Dispense Motor On / Off Half speed
093.008 Cyan Toner Dispense Motor On / Off Normal speed
093.009 Cyan Toner Dispense Motor On / Off Half speed
093.010 Black Toner Dispense Motor On / Off Normal speed
093.011 Black Toner Dispense Motor On / Off Half speed

Table 15 Chain 715 Component Output Codes

Chain-Link Component Name State Comments
715-026 Lamp On Interval On / Off
715-027 Lamp On Time On / Off
715-030 IIT Failure Part Diagnosis On / Off
715-050 Platen SS Registration Adjustment On / Off

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

dC330 6-58 Xerox WorkCentre 6655 Color Multifunction Printer
dC361 NVM Save and Restore NVM Restore
1. If necessary, connect the USB drive to the USB port on the left side of the machine.
Purpose
2. Enter service mode, GP 1.
To restore the NVM parameters of the machine to their previous values following a service
3. Select the Adjustments tab.
action; i.e. NVM expansion, IP or MCU Board replacement, or any others that would necessi-
tate a full NVM initialization. It can also be used to recover a machine‘s NVM values to a recent 4. Select dC361 NVM Save and Restore.
service call, in the event that a complete NVM failure occurred. As an additional tool, the ability The screen displays the NVM data.
to copy files between the hard drive and a USB drive is provided. 5. Restore the NVM data.
a. Select the entry from the available NVM data on the hard drive.
The NVM save to hard disk must be performed at the first service call and whenever the sys-
tem software is changed. NOTE: NVM data on a USB device should be copied to the hard drive before it can
be restored.
This procedure will save and restore only the IP, IIT and MCU NVM.
b. Select Restore Machine NVM.
NOTE: After a USB flash drive is first connected to the machine a UI screen message offering The status region at the top of the screen will report that the NVM was restored suc-
scan to and print from USB options will display. This screen message can be closed or left cessfully.
open before entering diagnostics without effecting the NVM save / restore processes. If you 6. Select Close to return to the service mode window.
choose to close the scan to and print from USB screen message it will not reappear on exit 7. Select Call Closeout to exit service mode.
from diagnostics. Therefore, leave this message screen open if the scan to and print from USB
options are to be required after a NVM save / restore.

Procedure
NVM Save
1. If necessary, connect the USB flash drive to the USB port on the left side of the machine.
2. Enter Service Diagnostics, GP 1.
3. Select the Adjustments tab.
4. Select dC361 NVM Save and Restore.
The screen displays the NVM data.

NOTE:
• The top entry displays the live NVM data for the machine.
• If the data has previously been saved to the hard disk these will be displayed in a list
below the live data.
• If a USB device containing NVM data is connected these will be displayed below the
hard disk data. To be recognized by the machine the USB device must be connected
at the time dC361 is started.

5. Save the NVM data.

• To save the live data to the hard disk select the live data entry and select save to
hard disk.
• To save the hard disk data to a USB device select the hard disk entry and select
save to USB device.
• To save the USB data to the hard disk select the USB entry and select save to HDD.

NOTE: Data cannot be saved or restored directly to or from the USB device to the
machine.

6. Select Close to return to the service mode window.

7. Select Call Closeout to exit service mode

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-59 dC361
dC612 Print Test Pattern dC919 Color Balance Adjustment
Purpose Purpose
To print embedded test prints useful for troubleshooting print quality problems. To adjust the copy mode color density.

1. Enter diagnostics, refer to GP 1. 1. Enter diagnostics, refer to GP 1.

2. Select the Diagnostics tab. 2. Select the Adjustments tab.
3. Select dC612 Print Test Pattern. 3. Select dC919 Color Balance Adjustment.
4. Select the test pattern to print from those listed on the display. 4. Record the current values stored for dC919 Color Balance. Then reset the values to
default and save.
5. Exit diagnostics.
6. IIT scanner components are thoroughly clean and in good operating condition. The
machine is operating to image quality specification with no visual defects in either copy or
print mode.
7. Print a hardcopy of the Print Quality Test Page "PQ1_std.ps" postscript file. Refer to loca-
tion: http://xww.docushare-xogpsg.world.xerox.com/dsweb/View/Collection-154810
8. Using the hardcopy print of the Print Quality Test Page (see above), place original print on
the platen glass and make several sample copies (mark these copies as “Before” sam-
ples).
9. Enter diagnostics, refer to GP 1.
10. Change the display values (range -4 to +4) for selected colors. Save your changes.
11. Exit dc919, exit Service Diagnostics.
12. Again using the same original test page (from step 1) placed on the platen glass, make
several sample copies. (mark copies as “After” samples)
13. Compare: the Before and After copy samples. Observe differences in color density
dependent on the changes you performed during step 10.
14. Verify NVM.
15. Restore the dc919 original values or reset back to default as necessary. Save Values.
16. Exit diagnostics.

General Procedures 9/2014 Initial Issue - Xerox Internal Use Only

dC612, dC919 6-60 Xerox WorkCentre 6655 Color Multifunction Printer
dC945 IIT Calibration dC1033 Slave Initialization
Purpose Purpose
To print embedded test prints useful for troubleshooting print quality problems. Initializes the data on the MCU.

1. Enter diagnostics, refer to GP 1. 1. Enter diagnostics, refer to GP 1.

2. Select the Adjustments tab, then dC945 IIT Calibration. 2. Select the Adjustments tab, then dC1033 Slave Initialization.
3. Follow the instructions on the screen to calibrate the CCD sensor. 3. Follow the instructions on the screen to initialize the MCU.

Initial Issue - Xerox Internal Use Only 9/2014 General Procedures

Xerox WorkCentre 6655 Color Multifunction Printer 6-61 dC945, dC1033
General Procedures 9/2014 Initial Issue - Xerox Internal Use Only
dC945, dC1033 6-62 Xerox WorkCentre 6655 Color Multifunction Printer
Change Tags
Change Tag Introduction
This section describes tags associated with the printer, as well as multinational applicability,
classification codes, and permanent or temporary modification information. Important modifica-
tions to the copier are identified by a tag number which is recorded on a tag matrix.

The tag matrix for the IOT is affixed to the chassis inside the Front Door.

Classification Codes
A tag number may be required to identify differences between parts that cannot be inter-
changed, or differences in diagnostic, repair, installation, or adjustment procedures.

A tag number may also be required to identify the presence of optional hardware, special non-
volatile memory programming, or whether mandatory modifications have been installed. Each
tag number is given a classification code to identify the type of change that the tag has made.
The classification codes and their descriptions are listed in Table 1.

Table 1 Classification Codes

Classification Code Description
M Mandatory tag.
N Tag not installed in the field.
O Optional tag.
R Repair tag.

Change Tags
There are no Change Tags currently in effect for this product.

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Xerox WorkCentre 6655 Color Multifunction Printer 6-63
General Procedures 9/2014 Initial Issue - Xerox Internal Use Only
6-64 Xerox WorkCentre 6655 Color Multifunction Printer
 7 Wiring
Plug and Jack Locations
How to Use the Plug / Jack Location List........................................................................ 7-3

Harness Routing
System Wiring Diagrams................................................................................................. 7-9

Wiring Diagrams
Subsystem Wiring Diagrams ........................................................................................... 7-11

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Xerox WorkCentre 6655 Color Multifunction Printer 7-1
Wiring 9/2014 Initial Issue - Xerox Internal Use Only
7-2 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 1 Plug / Jack Locations
How to Use the Plug / Jack Location List P/J Map Coordinates Connection
The P/J Locator diagrams show the location of primary connections within the printer. Use 48 Figure 4 G-111 LVPS and AC Inlet Harness Assembly
these illustrations to locate connections called out in the procedures presented in Sections 2, 112 Figure 3 G-108 Laser Unit and Laser Unit Video Harness Assembly
4, and 6. Connectors designated “CN” are listed at the end of the P/J connectors.
121 Figure 3 G-107 Imaging Unit CRUM Y and X CRUM Harness Assembly

Harness connections appear in sections System Wiring Diagrams and Subsystem Wiring Dia- 122 Figure 3 F-107 Imaging Unit CRUM M and X CRUM Harness Assembly
grams. 123 Figure 3 F-108 Imaging Unit CRUM C and X CRUM Harness Assembly
124 Figure 3 E-108 Imaging Unit CRUM K and X CRUM Harness Assembly
How to find a P/J location: 131 Figure 4 G-106 CTD Sensor Assembly and Regi Harness Assembly
1. Locate the P/J connector designator in the first column of Table 1. 132 Figure 4 F-106 Inside CTD Sensor Assembly
2. With this information, refer to the Map column for the figure number. 141 Figure 1 F-107 Connects inside Upper Dispenser Motor Assembly (con-
3. Use the coordinates to find the P/J connector designator’s location on the map. nects Toner Dispenser Motor Y,M and harness)
144 Figure 1 G-108 Connects inside Upper Dispenser Motor Assembly (con-
Table 1 Plug / Jack Locations nects Toner Dispenser Motor C,K and harness)
P/J Map Coordinates Connection 145 Figure 1 G-107 Front Cover Sensor and Upper Dispenser Motor Assem-
bly
1 Figure 6 G-107 Not Connected
151 Figure 2 F-105 Sensor Harness Assembly and Exit Sensor Harness
10 Figure 5 G-102 MCU Board and Main Harness Assembly
Assembly
11 Figure 5 H-102 MCU Board and Laser Unit
154 Figure 2 F-105 Full Stack Sensor and Sensor Harness Assembly
12 Figure 5 I-101 MCU Board and X CRUM Harness Assembly
155 Figure 2 E-105 Exit Sensor and Exit Sensor Harness Assembly
13 Figure 5 H-102 MCU Board and Regi Harness Assembly
171 Figure 1 E-106 Main Motor and Drive Harness Assembly
14 Figure 5 H-101 MCU Board and Upper Dispenser Motor Assembly
172 Figure 1 E-109 Paper Transport (Sub) Motor and Drive Harness Assem-
15 Figure 5 H-101 MCU Board and Sensor Harness Assembly bly
17 Figure 5 G-101 MCU Board and Drive Harness Assembly 181 Figure 5 G-109 Development HVPS Board and MCU-HVPS Flat Flex
18 Figure 5 H-102 MCU Board and MCU-HVPS Flat Flex Connector (FFC) Connector (FFC)
19 Figure 5 J-101 MCU Board and Top Harness Assembly 182 Figure 5 G-110 Development HVPS Board and HVPS Harness Assembly
21 Figure 5 H-102 MCU Board and Bypass Tray Harness Assembly 191 Figure 3 F-106 Toner CRUM Y and Top Harness Assembly
22 Figure 5 H-102 MCU Board and Duplex Clutch 192 Figure 3 F-106 Toner CRUM M and Top Harness Assembly
23 Figure 5 H-102 MCU Board and Regi Harness Assembly 193 Figure 3 F-106 Toner CRUM C and Top Harness Assembly
27 Figure 5 I-102 MCU Board and Main Harness Assembly 194 Figure 3 F-107 Toner CRUM K and Top Harness Assembly
28 Figure 5 I-102 MCU Board and Top Harness Assembly 203 Figure 4 C-106 Toner Full Sensor and Top Harness Assembly
29 Figure 5 J-102 MCU Board and Top Harness Assembly 211 Figure 2 I-107 Bypass Tray Sensor and Bypass Tray Harness Assembly
30 Figure 5 H-102 MCU Board and Top Harness Assembly 212 Figure 2 G-106 Bypass Tray No Paper Sensor and Bypass Tray Harness
33 Figure 5 G-102 MCU Board and Drive Harness Assembly Assembly
36 Figure 5 I-102 MCU Board and Laser Unit 213 Figure 1 F-108 Take Away Clutch 2 and Bypass Tray Harness Assembly
37 Figure 5 I-101 MCU Board and Main Harness Assembly 214 Figure 2 I-108 Bypass Tray Feed Solenoid and Bypass Tray Harness
38 Figure 5 I-101 MCU Board and Exit Clutch2 [Exit Drive Assembly] Assembly
39 Figure 5 I-102 MCU Board and Regi Harness Assembly 232 Figure 2 D-107 Regi Sensor and Regi Harness Assembly
40 Figure 5 I-102 MCU Board and Exit Clutch1 [Exit Drive Assembly] 233 Figure 2 E-108 CST No Paper Sensor and Regi Harness Assembly
40 Figure 4 A-111 LVPS and Top Harness Assembly 234 Figure 2 D-108 Regi Clutch and Regi Harness Assembly
41 Figure 4 A-110 LVPS and Rear Interlock Switch 251 Figure 1 G-109 EEPROM XPRO Board and Main Harness Assembly
42 Figure 4 A-110 LVPS and Front Interlock Switch 271 Figure 1 F-109 Feeder Drawer 1 Harness Assembly and Main Harness
43 Figure 4 A-111 LVPS and Top Harness Assembly Assembly

47 Figure 4 G-110 LVPS and Heater Harness Assembly

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Xerox WorkCentre 6655 Color Multifunction Printer 7-3 How to Use the Plug / Jack Location List
 Table 1 Plug / Jack Locations Table 1 Plug / Jack Locations
P/J Map Coordinates Connection P/J Map Coordinates Connection
271 Figure 6 H-106 Feeder Drawer 1 Harness Assembly and Main Harness 501 Figure 4 C-110 LVPS and Top Harness Assembly
Assembly 503 Figure 4 B-110 LVPS and Main Fan
281 Figure 4 D-106 Fuser and Heater Harness Assembly 508 Figure 4 F-110 LVPS and Top Harness Assembly
281-S Figure 4 D-106 Fuser and Top Harness Assembly 509 Figure 4 B-111 LVPS and Top Harness Assembly
300 Figure 5 D-101 IP Board and Cont IIT Harness Assembly 800 Figure 4 F-105 Stapler LVPS Board and AC Inlet Harness Assembly
302 Figure 5 D-102 IP Board and Hard Disk Drive 801 Figure 4 D-104 Stapler LVPS Board and Stapler Interock Harness
310 Figure 5 C-102 IP Board and Hard Disk Drive Assembly
311 Figure 1 E-107 Main Motor and Top Harness Assembly 802 Figure 4 E-105 Stapler LVPS Board and Top Harness Assembly
312 Figure 1 E-109 Paper Transport (Sub) Motor and Top Harness Assembly 1332 Figure 5 A-102 IP Board and SD Card
320 Figure 5 C-104 IP Board and Main Harness Assembly 1821 Figure 5 C-111 Transfer HVPS and HVPS Harness Assembly
328 Figure 5 C-104 IP Board and Laser Unit Video Harness Assembly 3701 Figure 1 F-109 Size Switch Assembly and Main Harness Assembly
330 Figure 5 B-103 IP Board and RAM Memory 4201 Figure 6 E-108 C2 Turn Clutch and C2 Turn Harness Assembly
331 Figure 1 E-108 Development Motor and Drive Harness Assembly 4202 Figure 6 E-107 550 Option Main Feeder Assembly and C2 Turn Harness
336 Figure 5 C-101 IP Board and IIT Video Cable Assembly Assembly
340 Figure 5 A-103 IP Board Ethernet Port 4203 Figure 6 D-106 550 Option Main Feeder Assembly No Paper Sensor and
Harness (connects inside)
343 Figure 5 C-101 IP Board and Side USB Assembly
4211 Figure 6 H-106 CST Size Switch and C2 Size Harness Assembly
344 Figure 5 A-102 IP Board USB Port
345 Figure 5 A-101 IP Board and Fax Board 4212 Figure 6 D-106 550 Option Main Feeder Assembly Regi Sensor and Har-
ness (connects inside)
346 Figure 5 A-102 IP Board USB Port
4213 Figure 6 E-107 Option Feeder Feed Clutch and C2 Size Harness Assem-
352 Figure 5 B-101 IP Board and Console Assembly bly
390 Figure 5 C-101 IP Board and Cont IIT SU Harness Assemby 4214 Figure 6 E-108 550 Option Main Feeder Assembly and C2 Size Harness
392 Figure 2 E-108 CST Feed Clutch and Regi Harness Assembly Assembly
401 Figure 5 G-104 IIT MCU Board and Top Harness Assembly 4221 Figure 6 F-107 550 Option Drive Assembly and Feeder Motor Harness
402 Figure 5 G-104 IIT MCU Board and Cont IIT POW Harness Assembly Assembly
403 Figure 5 G-105 IIT MCU Board and Top Harness Assembly 4331 Figure 5 E-111 IP Fan and Top Harness Assembly
419 Figure 6 G-106 550 Option Feeder Board and Feeder Drawer 1 Harness 8011 Figure 4 D-104 Stapler LVPS Board and Stapler Interlock Harness
Assembly Assembly
420 Figure 6 G-107 550 Option Feeder Board and C2 Turn Harness Assem-
bly
421 Figure 6 F-107 550 Option Feeder Board and C2 Size Harness Assembly
422 Figure 6 F-107 550 Option Feeder Board and Feeder Motor Harness
Assembly
423 Figure 6 G-106 Not Connected
431 Figure 3 G-108 Laser Unit and Top Harness Assembly
431 Figure 5 G-105 IIT MCU Board and IIT Video Cable Assembly
432 Figure 5 F-105 IIT MCU Board and Cont IIT SU Harness Assembly
433 Figure 5 G-105 IIT MCU Board and Top Harness Assembly
451 Figure 5 F-104 IIT MCU Board and IIT Assembly
452 Figure 5 G-104 IIT MCU Board and IIT Assembly
453 Figure 5 G-104 IIT MCU Board and DADF Assembly
454 Figure 5 F-104 IIT MCU Board and IIT Assembly

Wiring 9/2014 Initial Issue - Xerox Internal Use Only

How to Use the Plug / Jack Location List 7-4 Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 1 P/J Locator Map 1
Figure 2 P/J Locator Map 2

Initial Issue - Xerox Internal Use Only 9/2014 Wiring

Xerox WorkCentre 6655 Color Multifunction Printer 7-5 How to Use the Plug / Jack Location List
 Figure 3 P/J Locator Map 3
Figure 4 P/J Locator Map 4

Wiring 9/2014 Initial Issue - Xerox Internal Use Only

How to Use the Plug / Jack Location List 7-6 Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 5 P/J Locator Map 5
Figure 6 P/J Locator Map 6 (550 Option Tray)

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Xerox WorkCentre 6655 Color Multifunction Printer 7-7 How to Use the Plug / Jack Location List
Wiring 9/2014 Initial Issue - Xerox Internal Use Only
How to Use the Plug / Jack Location List 7-8 Xerox WorkCentre 6655 Color Multifunction Printer
System Wiring Diagrams
This section shows the wiring diagrams for the printer system. Refer to Table 1 for a list of the
symbols used in the wiring diagrams.

Refer to Table 2 for a list of the wiring diagrams for the printer subsystems and the connection
details shown in each diagram. The wiring diagrams follow Table 2.

Table 1 Symbols Used in the System Wiring Diagrams

Symbol Description
Denotes the parts.
PL X.Y.Z implies the item “Z” of plate (PL) “X.Y” in Parts List.

Denotes functional parts attached with functional parts

name.

Denotes the control and its outline in the Board.

Denotes a Safety Interlock Switch.

Table 2 Wiring Diagrams and Connection Details

Printer
Subsystem Diagram Connection Details
Printer System Figure 1 System Wiring Diagram 1:
AC Power, Fusing, Drive, Laser, Controller
Figure 2 System Wiring Diagram 2:
Bypass (MSI), Transport, HVPS, Xerographic, Developer, Figure 1 System Wiring Diagram 1
Exit, 550 Option Feeder
Figure 3 System Wiring Diagram 3: Scanner

Initial Issue - Xerox Internal Use Only 9/2014 Wiring

Xerox WorkCentre 6655 Color Multifunction Printer 7-9
 Figure 3 System Wiring Diagram 3

Figure 2 System Wiring Diagram 2

Wiring 9/2014 Initial Issue - Xerox Internal Use Only

7-10 Xerox WorkCentre 6655 Color Multifunction Printer
Subsystem Wiring Diagrams Table 1 Symbols Used in the Subsystem Wiring Diagrams

This section shows the wiring diagrams for the printer subsystems including the 550 option Symbol Description
feeder tray. Refer to Table 1 for a list of the symbols used in the wiring diagrams. Denotes a connection between parts with harness or wired,
attached with signal name/contents.
Refer to Table 2 for a list of the wiring diagrams for the printer subsystems and the connection
details shown in each diagram. The wiring diagrams follow Table 2. Each printer subsystem
diagram has an associated table listing the names for the main signal lines.
Denotes function, and logic value of the signal to operate
Table 1 Symbols Used in the Subsystem Wiring Diagrams the function (Low: L, High: H). The given voltage is for signal
in high status. The arrow indicates the direction of signal.
Symbol Description
Denotes a Plug.
Denotes function, and logic value of the signal when the
function operated (Low: L, High: H). The given voltage is for
signal in high status. The arrow indicates the direction of sig-
nal.
Denotes a Jack.
Denotes a connection between wires.

Denotes Pin yy and Jack yy of the connector Pxx and Jxx.

Denotes a Clutch or Solenoid.

Denotes a Jumper Point (JPxxx/xxx). Each end of the

Jumper connection has a numeric designation. Denotes a Motor.

Denotes the parts. Denotes a Photo Sensor.

PL X.Y.Z implies the item “Z” of plate (PL) “X.Y” in Parts List.

Denotes functional parts attached with functional parts

name.
Denotes an LED.

Denotes the control and its outline in the Board.

Denotes a Safety Interlock Switch.

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Xerox WorkCentre 6655 Color Multifunction Printer 7-11 Subsystem Wiring Diagrams
 Table 1 Symbols Used in the Subsystem Wiring Diagrams Table 2 Wiring Diagrams and Connection Details
Symbol Description Printer
Subsystem Diagram Connection Details
Denotes an On-Off Switch (single-pole, single-throw switch).
Laser Unit Figure 5 Connections of Laser Unit with MCU Board.
Table 7 Connections of Laser Unit with LVPS Board.
Connections of Laser Unit with IP Board.
Denotes an On-Off Switch (Temperature - normally closed). Controller Figure 6 Connections of IP Board with MCU Board.
Table 8 Connections of IP Board with IIT MCU Board.
Connections of MCU Board with LVPS.
Connections of IIT MCU Board with LVPS.
Connections of IIT MCU Board with IP Fan.
Denotes an NPN Photo-transistor. Connections of IIT MCU with Stapler LVPS Board.
Connections of Stapler LVPS Board with Stapler Assembly.
Connections of IP Board with Control Panel Assembly.
Connections of IP Board with Side USB Hub Board.
Connections of IP Board with FAX Board.
Connections of IP Board with Hard Disk Drive (HDD).
Connections of IP Board with RAM.
I/L +24 VDC Denotes DC voltage when the Interlock Switch in MCU Connections of IP Board with SD Card.
Board turns On. Paper Trans- Figure 7 Connections of Regi Clutch with MCU Board.
+5 VDC Denotes DC voltage. port Table 9 Connections of Regi Chute Assembly with MCU Board.
+3.3 VDC Connections of Feed Clutch with MCU Board.
SG Denotes signal ground. Connections of Duplex Clutch with MCU Board.
Connections of Size Switch Assembly with MCU Board.
AG Denotes analog ground.
HVPS Figure 8 Connections of HVPS XERO DEVE with HVPS TR.
RTN Denotes return.
Table 10 Connections of HVPS XERO DEVE with MCU Board.
Xerographic Figure 9 Connections of XERO DEVE CRU Assembly Y with MCU
Table 11 Board.
Connections of XERO DEVE CRU Assembly M with MCU
Table 2 Wiring Diagrams and Connection Details
Board.
Printer Connections of XERO DEVE CRU Assembly C with MCU
Subsystem Diagram Connection Details Board.
Power Regula- Figure 1 Connections of LVPS with MCU Board. Connections of XERO DEVE CRU Assembly K with MCU
tion and Distri- Table 3 Connections of AC IN Assembly with LVPS. Board.
bution Connections of Main Fan with LVPS. Connections of CTD Sensor with MCU Board.
Connections of Rear Interlock Switch with LVPS. Connections of EEPROM Board with MCU Board.
Connections of Door Interlock Switch with LVPS. Developer Figure 10 Connections of TONER CARTRIDGE Y with MCU Board.
Connections of MCU Board with Toner Full Sensor. Table 12 Connections of TONER CARTRIDGE M with MCU Board.
Fuser Figure 2 Connections of FUSING Assembly with LVPS. Connections of TONER CARTRIDGE C with MCU Board.
Table 4 Connections of FUSING Assembly with MCU Board. Connections of TONER CARTRIDGE K with MCU Board.
Connections of LVPS with MCU Board. Connections of Toner Dispense Motor(Y,M) with MCU
Board.
Drive Figure 3 Connections of DRIVE Assembly with MCU Board.
Connections of Toner Dispense Motor(C,K) with MCU
Table 5 Connections of DRIVE Assembly with LVPS.
Board.
Bypass Tray Figure 4 Connections of Bypass Tray Sensor with MCU Board. Connections of Front Cover Sensor with MCU Board.
(MSI) Table 6 Connections of Bypass Tray No Paper Sensor with MCU
Exit Figure 11 Connections of Exit Sensor with MCU Board.
Board.
Table 13 Connections of Full Stack Sensor with MCU Board.
Connections of DRIVE Assembly with MCU Board.
Connections of Exit Clutch 1 with MCU Board,
Connections of Bypass Tray Feed Solenoid with MCU
Connections of Exit Clutch 2 with MCU Board.
Board.

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Subsystem Wiring Diagrams 7-12 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 2 Wiring Diagrams and Connection Details
Printer
Subsystem Diagram Connection Details
550 Option Figure 12 Connections of Option 550 Feeder Board with MCU Board.
Feeder Table 14 Connections of Turn Roll Clutch with Option 550 Feeder
Board.
Connections of Option 550 Main Feed Assembly with Option
550 Feeder Board.
Connections of Feed Clutch with Option 550 Feeder Board.
Connections of Option 550 Size Switch Assembly with
Option 550 Feeder Board.
Connections of Option 550 Drive Assembly with Option 550
Feeder Board.
Scanner Figure 13 Connections of IP Board with IIT MCU Board.
Table 15 Connections of IIT Assembly with IIT MCU Board.
Connections of DADF Assembly with IIT MCU Assembly.

Initial Issue - Xerox Internal Use Only 9/2014 Wiring

Xerox WorkCentre 6655 Color Multifunction Printer 7-13 Subsystem Wiring Diagrams
 Figure 1 Power Regulation and Distribution Wiring Diagram

Table 3 Power Regulation and Distribution Signal Lines

Signal Line Name Description
REAR IL ON/OFF detect signal of the Rear Interlock Switch
DOOR IL ON/OFF detect signal of the Door Interlock Switch
FAN ALRM Drive control signal of the Main Fan
FAN LOW
FAN STOP
WASTE BOX FULL SENSED Full detect signal of the Waste Cartridge by the Toner Full
SIGNAL Sensor

Figure 2 Fuser Wiring Diagram

Table 4 Fuser Signal Lines

Signal Line Name Description
HEAT2 Temperature control signal of the Fusing Assembly
HEAT1
HEAT EN
FUSE CUT Control signal of the Fuse

Wiring 9/2014 Initial Issue - Xerox Internal Use Only

Subsystem Wiring Diagrams 7-14 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 4 Fuser Signal Lines Table 5 Drive Signal Lines
Signal Line Name Description Signal Line Name Description
FSR TEMP VD Temperature data measured by the Center Temp. Sensor SUB ALARM MOT Drive control signal of the Paper Transport Motor
FSR TEMP VC SUB REF CLOCK
FSR STS Temperature data measured by the Rear Temp. Sensor SUB START/STOP
SUB GAIN CHANGE
DEVE START/STOP Drive control signal of the Developer Motor
DEVE ALARM MOT
DEVE START/STOP
DEVE GAIN CHANGE

Figure 4 Bypass Tray (MSI) Wiring Diagram

Table 6 Bypass Tray (MSI) Signal Lines

Figure 3 Drive Wiring Diagram Signal Line Name Description

PRE REGI SENSED SIGNAL Detect signal of paper in the Pre Registration section by the
Table 5 Drive Signal Lines MSI Sensor
Signal Line Name Description MSI PAPER SENSED SIGNAL Detect signal of paper in the MSI section by the MSI No
Paper Sensor
MAIN ALARM MOT Drive control signal of the Main Motor
MAIN REF CLOCK TAKEAWAY CL ON ON/OFF signal of the Takeaway Clutch
MAIN START/STOP MSI FEED SOLENOID ON ON/OFF signal of the MSI feed Solenoid
MAIN GAIN CHANGE

Initial Issue - Xerox Internal Use Only 9/2014 Wiring

Xerox WorkCentre 6655 Color Multifunction Printer 7-15 Subsystem Wiring Diagrams
 Figure 5 Laser Unit Wiring Diagram

Table 7 Laser Unit Signal Lines

Signal Line Name Description
MOTOR ON Drive control signal of the Scanner Motor in the Laser Unit
READY
CLOCK
HUMCLK Control signal of the LD light intensity in the Laser Unit
TEMP
SOS SIGNAL
LD ERROR
PCONT
VREF K
VREF C
VREF M
VREF Y
LD ENB
PDATA K
PDATA C
PDATA M
PDATA Y
DATA Y Image data of each color (Y/M/C/K)
xDATA Y
DATA M
xDATA M
DATA C
xDATA C
DATA K
xDATA K

Wiring 9/2014 Initial Issue - Xerox Internal Use Only

Subsystem Wiring Diagrams 7-16 Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 6 Controller Wiring Diagram

Table 8 Controller Signal Lines

Signal Line Name Description
LINE SYNC Control signal of the IP (ESS) Board
PAGE SYNC Y
PAGE SYNC M
PAGE SYNC C
PAGE SYNC K
TEST PRINT
CMD READY
COMMAND
STATUS
RDY PWR ON
IOT PWR STS
ALM (FAN ALARM) Drive control signal of the IP (ESS) Fan
ON (FAN ON)

Initial Issue - Xerox Internal Use Only 9/2014 Wiring

Xerox WorkCentre 6655 Color Multifunction Printer 7-17 Subsystem Wiring Diagrams
 Table 9 Paper Transport Signal Lines
Signal Line Name Description
FEED CL ON ON/OFF signal for the Feed Clutch
DUP CL ON ON/OFF signal for the Duplex Clutch
SIZE3 Detect signal of a paper size inside the optional tray by the
SIZE2 Size Switch Assembly
SIZE1

Figure 7 Paper Transport Wiring Diagram

Table 9 Paper Transport Signal Lines

Signal Line Name Description
REGI CL ON ON/OFF signal for the Regi Clutch
TRAY PAPER SENSED SIGNAL Media detected in the tray by the No Paper Sensor
REGI PAPER SENSED SIGNAL Media detected in the Pre-Registration section by the Regi
Sensor

Wiring 9/2014 Initial Issue - Xerox Internal Use Only

Subsystem Wiring Diagrams 7-18 Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 8 HVPS Wiring Diagram

Table 10 HVPS Signal Lines

Signal Line Name Description
DA DO Control signal of the HVPS
I MONITER
+3V REF
I/L +24VDC
CLOCK 3
CLOCK 2
CLOCK 1
DA LD
DA CLOCK
DA DI
DA TR1 K
DA TR1 CLR
DA TR2
DA TR2 CLN
I-MONITOR TR2

Initial Issue - Xerox Internal Use Only 9/2014 Wiring

Xerox WorkCentre 6655 Color Multifunction Printer 7-19 Subsystem Wiring Diagrams
 Figure 9 Xerographic Wiring Diagram

Table 11 Xerograph Signal Lines

Signal Line Name Description
DATA Control signal of the XERO DEVE CRU Assembly Y/M/C/K
CLOCK and the PWBA EEPROM
CTD VOUT Toner patch density data measured by the CTD Sensor
LED ON LED lighting signal of the CTD Sensor
CTD VMONTOR Voltage monitor signal of the CTD Sensor

Wiring 9/2014 Initial Issue - Xerox Internal Use Only

Subsystem Wiring Diagrams 7-20 Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 10 Developer Wiring Diagram

Table 12 Developer Signal Lines

Signal Line Name Description
CLOCK Control signal of the Toner Cartridge Y/M/C/K
DATA
CLOCK B Drive control signal of the Toner Dispense Motor (Y,M) /
CLOCK /B (C,K)
CLOCK /A
CLOCK A
FRONT COVER OPER SIGNAL FRONT COVER opening/closing detect signal by the Front
Cover Sensor

Figure 11 Exit Wiring Diagram

Table 13 Exit Signal Lines

Signal Line Name Description
EXIT SENSED SIGNAL Detect signal of paper in the Exit section by the Exit Sensor

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Xerox WorkCentre 6655 Color Multifunction Printer 7-21 Subsystem Wiring Diagrams
 Table 13 Exit Signal Lines
Signal Line Name Description
PAPER FULL STACK Paper full detect signal of the output tray by the Full Stack
SENSED SIGNAL Sensor
EXIT CLUTCH 2 ON ON/OFF signal of the EXIT CLUTCH 2
EXIT CLUTCH 1 ON ON/OFF signal of the EXIT CLUTCH 1

Wiring 9/2014 Initial Issue - Xerox Internal Use Only

Subsystem Wiring Diagrams 7-22 Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 12 550 Option Feeder Wiring Diagram

Table 14 550 Option Feeder Signal Lines

Signal Line Name Description
FEED TRAY SENS Control signal of the 550 Option Feeder Board
FEED RXD
FEED TXD
TURN ROLL CLUTCH ON ON/OFF signal of the Turn Roll Clutch
TRAY PAPER SENSED SIGNAL Detect signal of paper inside the optional tray by the C2
No Paper Sensor
REGI PAPER SENSED SIGNAL Detect signal of paper in the Registration section of the
optional tray by the C2 Regi Sensor
FEED ROLL CLUTCH ON ON/OFF signal of the C2 Feed Clutch
SIZE 3 ON/OFF signal of a paper size inside the optional tray by
SIZE 2 the 550 Size Switch Assembly
SIZE 1
OP FEED MOTOR ON Drive control signal of the Option Feeder Motor
OP FEED MOTOR ALARM
OP FEED MOTOR CLOCK
OP FEED MOTOR GAIN

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Xerox WorkCentre 6655 Color Multifunction Printer 7-23 Subsystem Wiring Diagrams
 Table 15 Scanner Signal Lines
Signal Line Name Description
PAP PRES Control signal of the DADF Assembly
FEED FIR
/STAGE
MOT FEED PW
/FEED
MOT VREF
MOT PICK DIR
ADF PAPER LENGTH
MOT PICK PW
/ADF COV
/FAULT
MOT PICK EN
MOT FEED EN
+3.3V LP
MOT PICK ENC
PONG IO Control signal of the IIT MCU Board
DADF STS+, DADF STS-
DADF CMD+, DADF CMD-
DADF RST
#DADF PSYNC
DADF START
#DOC RDY
#DADF EXIST
FPGA MODE3
FPGA MODE2
FPGA MODE1
#IIT PWR STS
HOME SNR
PING IO
FAX STBY5V ON
ESS FAN ON
FAN PWR ON
MOT FWD
#MOT ON
ESS FAN FAIL
MOT CLK
SLP RECOVERY
Figure 13 Scanner Wiring Diagram #LAMP ON
IIT LVPS SQ
Table 15 Scanner Signal Lines #EEPROM TX
#EEPROM CS
Signal Line Name Description
#EEPROM RX
SCAN / A Control signal of the Carriage Motor (FB Motor) EEPROM SCK+, EEPROM SCK-
SCAN A
SCAN B
SCAN / B
HOME Registration position detect signal by Scanner Home
Position Sensor (Home Pos Sensor)

Wiring 9/2014 Initial Issue - Xerox Internal Use Only

Subsystem Wiring Diagrams 7-24 Xerox WorkCentre 6655 Color Multifunction Printer
 8 Principles of Operation
WorkCentre 6655 Operational Overview ........................................................................ 8-3
Media Handling ............................................................................................................... 8-3
Sensors ........................................................................................................................... 8-8
Xerographics ................................................................................................................... 8-10
Major IOT Assemblies..................................................................................................... 8-14
Major IIT Assemblies....................................................................................................... 8-18
WorkCentre 6655 Options............................................................................................... 8-20

Initial Issue - Xerox Internal Use Only 9/2014 Principles of Operation

Xerox WorkCentre 6655 Color Multifunction Printer 8-1
Principles of Operation 9/2014 Initial Issue - Xerox Internal Use Only
8-2 Xerox WorkCentre 6655 Color Multifunction Printer
WorkCentre 6655 Operational Overview Media Handling
This section describes the printer’s operational characteristics providing detailed descriptions This section describes the media feed path of the entire device and the media feed process in
of the media path, sensors, xerographics and major assemblies. each feed section. Media is driven along the media path by various drive motors, belts, gear
assemblies and rollers. Synchronization of these components is managed by the MCU Board.
The operating system monitors sensors located along the media path throughout the print
engine, ADF, and attached options. As a sheet travels along the media path, sensors change
state temporarily to indicate the sheet’s presence. If the pattern of sensor state changes differs
from the expected timing for a particular media size and path, an error is reported.

Media Path Layout

Figure 1 shows the media feed layout when the duplex print unit and the tray module are
installed, and the components relevant to media feed.

Figure 1 Media Path Layout

Feeding from Paper Cassette

The paper loaded in the paper cassette is fed between the Feed Roller and the Retard Roller
by the Nudger Roller, and fed farther to the registration section by the rotation of the Feed
Roller and the Retard Roller (Figure 2).

The Nudger Roller and the Feed Roller are rotated by the torque of the Paper Transport Motor
via the Feed Roller Clutch.

Initial Issue - Xerox Internal Use Only 9/2014 Principles of Operation

Xerox WorkCentre 6655 Color Multifunction Printer 8-3 WorkCentre 6655 Operational Overview, Media
The Retard Roller, pressed from underneath by the spring pressure and forced to the Feed Feeding from Bypass Tray
Roller, plays a role of fanning a sheet by the rotation friction.
When sheet feeding from the Bypass Tray starts, the Feed Roller rotates, driven by the Paper
Transport Motor and controlled by the Bypass Tray Feed Solenoid, to feed the sheet to the
When the sheet is lapped over, the break force of the torque limiter combined with the Retard
position where it is nipped between the Feed Roller and the Retard Roller (Figure 3).
Roller separates and feeds only the sheet on the top.
As the Feed Roller rotates, the Left and Right Bypass Tray Cams also rotate to lift the Bottom
The Bottom Plate Assembly is the mechanism driven with the gear located on the side of the
Plate Assembly via the Left and Right Bypass Tray Arms to the position for sheet feeding.
paper cassette. Unless the interlock gear is unlocked, the Bottom Plate Assembly keeps the
state that it is not lowered or elevated from the arbitrary position. The sheet is fed at this posi-
Normally, when only one sheet is fed, both the Feed Roller and Retard Roller rotate to allow
tion.
the sheet to pass. However, when two sheets are fed concurrently, only the Feed Roller rotates
and the Retard Roller is locked thereby allowing the upper sheet to pass by being separated
As the media feed is proceeded and several sheets of paper on the top of the paper loaded are
from the lower sheet that is stopped by the friction with the Retard Roller at rest.
decreased, the Nudger Roller lowers down and the lever unlocks the gear, and then the Bot-
tom Plate Assembly is elevated.
The Retard Roller is being pushed toward the Feed Roller by spring pressure, and controlled
by the torque limiter (Friction Clutch Assembly) with which it is coupled.

Figure 2 Paper Feed from the Cassette

Principles of Operation 9/2014 Initial Issue - Xerox Internal Use Only

Media Handling 8-4 Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 4 Media Feed from the Bypass Tray to the Registration Section

The sheet coming from the paper cassette passes through the chute directly and is fed to the
registration section (Figure 5).

Figure 3 Media Feed from the Bypass Tray

Feeding to Registration Section

Media is fed to the printer’s Registration section from either the Bypass Tray or from the paper
cassettes.

A sheet coming from the Bypass Tray is fed to the registration section by the Takeaway rollers,
TA1, TA2, and TA3, all driven by the Paper Transport Motor (Figure 4).
Figure 5 Media Feed from the Cassette to the Registration Section

Initial Issue - Xerox Internal Use Only 9/2014 Principles of Operation

Xerox WorkCentre 6655 Color Multifunction Printer 8-5 Media Handling
Leading Edge Registration Transfer / Fusing / Exit
When a sheet fed out of the Bypass Tray or cassette directly reaches the toner transfer sec- Once the sheet passed through the registration section, the toner image on the intermediate
tion, the toner image may not be transferred at the correct position on the sheet due to mis- transfer belt (IBT) is transferred by the intermediate transfer belt and the Transfer Roller
alignment of lead edges in the Bypass Tray or Tray. rotated by the drive of the Developer Motor (Figure 7). Then, the sheet is fed to the exit section
while its toner image is being fused by the Heat Roller that is rotated by the drive of the Main
To avoid this problem, the lead edge timing of the sheet needs to be corrected at the registra- Motor. Also, the drive of the Main Motor is transmitted to the Exit Clutch 1, and the Exit Roller is
tion section before the sheet is forwarded to the toner transfer section. rotated in the sheet exit direction, and the print completed sheet is ejected from the printer. The
completion of the sheet exit is detected by the Exit Sensor.
By thrusting the edge of the sheet fed out of the Bypass Tray or Tray against the Regi Roller
that is locked, the lead edge position of the sheet is corrected (Figure 6).

Figure 7 Media Feed Through Image Transfer and Fusing, then to Exit Section

Feeding to Duplexer
After the sheet goes through the Heat Roller and the printing on the side 1 is completed, the
rotation direction of the Exit Roller is reversed to the duplex feed direction at the proper timing,
and the sheet is nipped in the Duplex Assembly (Figure 8).

Figure 6 Registration Rollers Correct the Media Alignment When the drive of the Main Motor is transferred to the Exit Clutch 2, the Exit Roller is rotated in
the duplex direction.
Feeding from Registration Section
The sheet is fed to the toner transfer section by the rotation of the Regi Roller at the proper Also, the Duplex Roller is rotated by the drive of the Paper Transport Motor, and the sheet is
time, after the lead edge position of the sheet fed is corrected in the registration section. fed to the registration position.

The Regi Roller is rotated by the drive from the Paper Transport Motor via the Regi Clutch.

Principles of Operation 9/2014 Initial Issue - Xerox Internal Use Only

Media Handling 8-6 Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 9 Simplex Media Feed Through the DADF

Figure 8 Media Feed to the Duplexer

Feeding Through DADF (Duplex)
For duplex operation, after scanning a document is completed and the rear edge of the docu-
Feeding Through DADF (Simplex)
ment is passed through the Transport Roll, the Pressure Plate position switches to that shown
When the sheet feeding from the Document Feeder Tray of the DADF starts, the Nudger Roll in Figure 10. Then, the Exit Roll is reversed by the reverse drive of the DADF Motor, and the
and the Feed Roll rotate driven by the torque from the DADF Motor (Figure 9). The sheet is document is nipped into the DADF. The document is reversed at this time. When the position of
nipped between the Feed Roll and the Retard Pad while being fed into the DADF. the Pressure Plate is switched, the gear to drive the Transfer Roll is switched, so the rotation is
in a positive manner although the DADF Motor rotates in a negative manner. When the docu-
Inside the DADF, the sheet is fed by the Takeaway Roll that rotates from the DADF Motor to the ment is fed near side of the Take away Roll, switch the position of the Pressure Plate to below
Scanner Home (CVT: Constant Velocity Transport) Position in the Carriage Assembly, and is to make the DADF Motor return to the positive rotation drive, and the document is fed to the
scanned. Scanner Home Position (CVT Position) by the torque from the Transport Roll. The document
scanned at the CVT Position is fed to the Document Output Tray of the DADF by the Transport
After being scanned, the sheet is ejected to the Document Output Tray of the DADF by the Roll and the Exit Roll.
Transport Roll and Exit Roll that rotates from the DADF Motor.

Initial Issue - Xerox Internal Use Only 9/2014 Principles of Operation

Xerox WorkCentre 6655 Color Multifunction Printer 8-7 Media Handling
 Sensors
The printer contains sensors of various types that perform a variety of functions. One group of
sensors track media as it moves along the media path to detect jams. Other sensors detect the
presence of the Drum Cartridge, stop printer activity if a door is open (interlock), and monitor
the fusing temperature.

Sensor Types
The types of sensors used vary with function. In general, there are three types in use.

Photo Sensors
Two types of photo sensors are used, photo-reflective and photo-receptive. Photo-reflective
sensors use light reflected back from an object to detect its presence. Photo-receptive sensors
use an actuator or the object itself to block the light path to detect an object or condition.

Photo-reflective sensors have the light emitter and light receiver aligned on a single surface.
Output of the photo-receptor is High (> +4.5 V) when light is being reflected back and Low (<
+.3 V) when it is not. Photo-receptive sensors consist of a LED in one arm of a U-shaped
holder, and a photo-transistor in the other arm. When the sensing area is vacant, nothing is
between the arms of the sensor, light falls on the photo-receptor sending the signal High. If the
light is interrupted, the photo-transistor goes Low.

Thermistors
Thermistors have a known value of resistance whose value varies with temperature. Used pri-
marily in the Fuser for temperature sensing.

Microswitches
Microswitches are used primarily as cover interlocks in the printer. They are in a normally open
Figure 10 Duplex Media Feed Through the DADF state, and close when actuated. A bank of microswitches is used to detect media size in the
universal trays. Microswitches also employ hooks or catches for retention in the bracket or
frame. Figure 1 shows Interlock Switch locations.

Sensor and Switch Locations

Table 1 lists sensors in the media path and interlock switches. The table describes the type and
function of sensors in the media path and switches used to determine operational status and
detect jams or failures. Error detection is based on media transport timing through the sensing
area and on activation of interlocks.

Table 1 List of Sensor and Interlock Functions

Number Name Type Function
S1 MSI No paper Photo-receptive Signals no media in Bypass Tray
S2 Registration Photo-receptive Signals leading edge at registration
S3 Path Photo-receptive Signals media exit from feeder
S4 Exit Photo-receptive Signals media exit from Fuser
S5 Stack Full Photo-receptive Signals output tray full
S7 Tray 1 No paper Photo-receptive Signals no media in Tray 1
S8 ADC Photo-reflective Monitors Toner density
S10 Rear Interlock Microswitch Signals Rear Cover open

Principles of Operation 9/2014 Initial Issue - Xerox Internal Use Only

Media Handling, Sensors 8-8 Xerox WorkCentre 6655 Color Multifunction Printer
 Table 1 List of Sensor and Interlock Functions
Number Name Type Function
S12 Front interlock Microswitch Signals Front Cover open
S13 Size Switch Microswitch Signals media size in tray
S14 Legal Photo-receptive Signals Legal media in DADF Input
S16 Environmental pcb Monitors temperature and humidity
S17 Internal temp Thermistor Monitors internal temperature

Figure 1 shows interlock switch locations. Figure 2 shows sensor locations in the media path.

Figure 2 Media Path Sensors

Media Size Sensing

Tray 1 and optional feeders detect media size using an array of microswitches (Size Switch)
mounted in the tray cavity. When the tray end guide is adjusted, the guide changes the Size
Switch actuator positions. Actuating different combinations of the Size Switch produces differ-
ent combinations of high and low signals. These signals identify what size media is loaded and
what to display on the Control Panel. Also, actuation of the Size Switch signals the tray is
Figure 1 Interlock Switch locations present and closed to the MCU Board.

Media Present Sensing

When the last sheet is fed from any tray, the No Paper Sensor actuator drops to block the No
Paper Sensor. Feeding is inhibited until media is loaded into the tray.

Initial Issue - Xerox Internal Use Only 9/2014 Principles of Operation

Xerox WorkCentre 6655 Color Multifunction Printer 8-9 Sensors
Xerographics
Laser Unit
The Laser Unit (Figure 1) interprets signals from the IP Board and scans the surface of the
drum with a laser to create a latent image. The dual-beam laser scans from one end of the
drum surface to the other while being turned off and on forming a single line of a latent image.
The resolution of the dual-beam laser is either 600 dpi or 1200 dpi and is determined by the
customer setting. Both beams are always on. For 600 dpi, both beams receive the same data.
For 1200 dpi, the beams receive different data resulting in a smaller pixel size. The scanner
motor turns On when it receives a signal, and turns Off after printing ends. The motor remains
Off in the standby and power-saving states.

Figure 1 Laser Assembly

• The Laser Unit is field replaceable and contains the laser diodes, scanner motor/mirror,
and several lenses and mirrors.
• The Laser Unit “reflects” the laser beam so it strikes the Drum.

Principles of Operation 9/2014 Initial Issue - Xerox Internal Use Only

Xerographics 8-10 Xerox WorkCentre 6655 Color Multifunction Printer
 CAUTION
Never remove the cover from a Laser Assembly for any reason - contamination may result.
The Laser Unit consists of four components: the laser diode (LD) Assembly, the scanner
assembly, lenses and mirrors, and the start of scan (SOS) board (Table 1).

Table 1 Laser Assembly Components

Component Function
Laser Diode Assembly Produces two laser beams that are turned on and off according to
the print data signal.
Scanner Assembly Consists of a faceted polygonal mirror mounted on the shaft of the
scanner motor that reflects the beams to the drum surface through
lenses and mirrors, to scan the beams across the drum.
Start of Scan Board When the laser beams strike the sensor on the SOS board, the
signal generated indicates the initial position of the scan. The ini-
tial position where a scan is started on each line is detected.

Scanner motor control is performed according to the mode of operation as shown in Table 2.

Table 2 Scanner Motor Operational Modes

Operational Mode Laser Power On/Off
Standby Mode Always Off
Print Mode Turns On upon receiving the signal from the controller, and turns
Off after a preset time has passed from the end of printing. Also
turns Off if a print command is not received within 30 seconds
from the reception of the signal.
Sleep Mode Always Off

Imaging Units and Transfer Assemblies

The Imaging Units detect the image input, forming the static latent image and toner image for
each color on the drums. The Transfer Assemblies transfer the toner images from the drums to
the Transfer Belt, which are transferred to the media (Figure 2).

Figure 2 Imaging Units and Transfer Assemblies

CTD Sensor Assembly

Includes the CTD Sensor.
• CTD Sensor — The reflective color toner density sensor. Radiates light from the LED in
the sensor to the intermediate transfer belt, detects the reflected light from the intermedi-
ate transfer belt with the light receiving element, and outputs the electric signal corre-
sponding with the light intensity. Before the secondary transfer, detects the toner patch
density on the intermediate transfer belt.
Imaging Units Y, M, C, K
Consists of the drum to form the static latent image, and the developer to transfer toner to the
drum in yellow, magenta, cyan, and black.
• Drum — Forms the static latent image and the toner image.
• BCR — Bias charging roller — charges the drum.

Initial Issue - Xerox Internal Use Only 9/2014 Principles of Operation

Xerox WorkCentre 6655 Color Multifunction Printer 8-11 Xerographics
• Cleaning Roller — Cleans toner from the BCR surface. Dispenser
• Cleaning Blade — Cleans the remaining toner from the drum after the toner image is The Upper Dispenser Motor Assembly (PL5.1.1) drives the paddle in the Toner Cartridge and
transferred to the sheet. the auger of the Dispenser Assembly and feeds toner to the development section in the Imag-
• Magnet Roller — Contacts the drum and forms the toner image on the drum. ing Unit (Figure 3).
• Auger — Stirs toner.
• Trimmer Rod — Regulates toner and carrier pile height on the Magnet Roller
Transfer Belt Assembly
The primary transfer unit that transfers the toner image on the drum surface of each color to
the intermediate transfer belt.

The Transfer Belt Assembly mainly consists of the following components:

• 1st BTR Roller Y/M/C/K — Positive charge on the reverse side of the intermediate trans-
fer belt in printing, and transfers the toner image formed on the drum to the intermediate
transfer belt.
• Intermediate Transfer Belt — Transfers the toner image formed on the drums of each
color.
• Back Up Roller — Contacts the back side of a sheet of paper to the Transfer Roller via the
intermediate transfer belt in the secondary transfer, and transfers the toner image on the
transfer belt to the sheet.
• Belt Cleaner — After the toner image is transferred on the sheet, cleans the residual toner
from the intermediate transfer belt.
Transfer Roller Assembly
The Transfer Roller Assembly consists of the following components:
• Transfer Roller — Contacts with the reverse side of the toner transfer face on the sheet,
and transfers the toner image formed in the belt to the sheet.
• Eliminator — Neutralizes the sheet.
Figure 3 Dispenser Assemblies

The Upper Dispenser Motor Assembly consists of the following parts:

• Toner Dispense Motor (Y,M) — Drives the yellow and magenta Toner Cartridges and the
Dispenser Assembly via the gear.
• Toner Dispense Motor (C,K) — Drives the cyan and black Toner Cartridges and the Dis-
penser Assembly via the gear.
Toner Cartridges Y (PL5.1.8), M (PL5.1.9), C (PL5.1.10), K (PL5.1.11) store toner and a small
amount of carrier.

The Dispenser Assemblies (Y (PL5.1.4), M (PL5.1.5), C (PL5.1.6), K (PL5.1.7)) feed toner to

the developer.

NOHAD and Waste Toner Collection

Excess toner to collected into the Waste Toner Box (Figure 4).

The Main Fan (PL4.1.13) — Draws air from outside the machine, and prevents temperature
rise inside the machine.

Toner Full Sensor (PL4.1.17) — Detects when the Waste Cartridge is full.

Principles of Operation 9/2014 Initial Issue - Xerox Internal Use Only

Xerographics 8-12 Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 4 Main Fan and Waste Toner Collection Cartridge

Fuser
The Fuser unit, using a combination of heat and pressure, fuses the complete toner image to
the media (Figure 5). As a CRU, the Fuser is replaced as a unit.

Figure 5 Fuser

The Fuser receives its drive from the Main Drive Assembly. After the toner image is transferred
to the media, the media passes through the Fuser. The pressure roller is pressed against the
heat roller to melt the toner and bond the image to the media.

Initial Issue - Xerox Internal Use Only 9/2014 Principles of Operation

Xerox WorkCentre 6655 Color Multifunction Printer 8-13 Xerographics
The Fuser consists of the following components: Major IOT Assemblies
Components of the WorkCentre 6655 multifunction printer described in this section include:
• Heat Roller — A metal Roller, which has the surface for giving heat to fuse toner on a
sheet covered by the tube. • Trays
• Pressure Belt — A belt containing the pressurization system inside. In conjunction with • Duplex
the Heat Roller, impresses toner on the sheet. • Exit Assembly
• Heater Lamp — Provides a heating element that heats up the Heat Roller. • Drive and Electrical
• Center Temperature Sensor (contactless type) — A thermistor, located in the fuser,
detects the surface temperature on the Heat Roller and reacts corresponding with tem-
perature changes. Based on the temperature detected, the thermistor controls ON (ener-
gize) / OFF (extinguish) operation.
• Rear Temperature Sensor (contact type) — A thermistor, located in contact with the Heat
Roller, detects the surface temperature on the Heat Roller and reacts corresponding with
temperature changes. Prevents the abnormally high temperature of the Heat Roller.
• Thermostat — Located in series with the power source of the Heater Lamp, prevents the
secondary excess rise of temperature by the opening when the temperature excess rise
preventions (primary) by Temp. Sensor (thermistor) fails and temperature on the interface
part reaches to a certain level.
• First Time Fuse — Resets page count when a new fuser is installed.
Fuser Life Expectancy
The life expectancy of the Fuser is 200,000 Letter/A4 size pages. Several factors can reduce
Fuser life:
• Greater than 5% coverage
• Printing on heavy media
• Printing on transparencies or specialty media
Power Shutoff to the Fuser
The printer shuts off power to the Fuser for the following reasons:
• Fuser error
• Jam error
• Cover open
• Laser Unit error
• CPU or NVRAM error
• Rear Fan error

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Xerographics, Major IOT Assemblies 8-14 Xerox WorkCentre 6655 Color Multifunction Printer
Printer Drive
Media is driven through the printer primarily by the Main Drive Assembly. Motion of the Main
Drive Assembly is converted by a series of gears, clutches, and solenoids to move media
through the print process. The Main Drive Assembly gets +24 V power from the LVPS. Motor
control signals come from the MCU Board. Figure 1 shows interaction between the Main Drive
Assembly and other printer components.

Figure 1 Printer Main Drive Assembly

The Drive Assembly (PL3.1.1) consists of the following parts:

• Main Motor — The DC motor that drives the Heat Roller in the Fuser, the Exit Roller
Assembly in the exit section, the drum in the Imaging Unit of each color, the magnet
Roller in the Imaging Unit K (black), and the belt and cleaner in the Transfer Belt Assem-
bly.
• Paper Transport Motor — The DC motor that drives each roller of the media feed section Figure 2 Paper Transport Assembly
(feed from the Bypass Tray/tray, registration, and duplex feed). Also, drives the Drive
Shaft Assembly and the Auger in the Waste Cartridge via the gear. The Regi Clutch (PL15.1.8) transfers the drive of the Paper Transport Motor to the Regi Roller.
• Developer Motor — The DC motor that drives the magnet Roller in the Imaging Unit Y/M/
C (Yellow/Magenta/Cyan). The Regi Chute Assembly (PL15.2.1) consists of the following components:
• Takeaway Clutch — Transfers the drive of the Paper Transport Motor to the Takeaway • No Paper Sensor — The actuator detects presence or absence of media in the paper cas-
Roller. sette.
Paper Transport • Regi Sensor — Detects that a lead edge of a sheet is at the registration section.
The Paper Transport feeds the media through the Registration and Duplex sections (Figure 2). The Feed Clutch (PL15.2.6) transfers the drive of the Paper Transport Motor to the Feed
Roller.

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Xerox WorkCentre 6655 Color Multifunction Printer 8-15 Major IOT Assemblies
The Duplex Clutch (PL15.2.5) transfers the drive of the Paper Transport Motor to the Duplex
Roller inside the Duplex Assembly.

Bypass Tray
When media is detected in the Bypass Tray, the Bypass Tray Feed Roller transports media into
the printer (Figure 3).

Figure 4 Exit Assembly

The Exit Sensor (PL17.1.11) detects when media is present in the fuser.

The Full Stack Sensor (PL17.1.11) detects when the output tray is full.

The Exit Drive Assembly (PL17.1.21) consists of the following components:

• Exit Clutch 1 — Transfers the drive of the Main Motor to the Exit Roller. The Exit Roller
rotates in the media exit direction.
• Exit Clutch 2 — Transfers the drive of the Main Motor to the Exit Roller. The Exit Roller
rotates in the duplex feed direction.
Printer Electrical
Figure 3 Bypass Tray Assembly
The printer’s electrical components provide the power to operate the imaging input and output
The Bypass Tray Sensor (PL13.2.4) detects the installation of the Bypass Tray. components, process image data, and detect/control printer and print media conditions (Figure
5).
The Bypass Tray No Paper Sensor (PL13.2.4) detects presence or absence of media in the
Bypass Tray.

The Bypass Tray Feed Solenoid (PL13.2.9) transfers the drive of the Paper Transport Motor to
the Bypass Tray Feed Roller.

Exit Assembly
The Exit Assembly discharges the media from the Fuser to the Output Tray or back through the
duplex path (Figure 4).

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Major IOT Assemblies 8-16 Xerox WorkCentre 6655 Color Multifunction Printer
 • Monitors printer status.
• Maintains a running print count.
• Writes the NVRAM settings.
• Controls printer options.

The IP Board (PL18.1.22) receives host data, buffers, stores, and sends the data to the print
engine in a rasterized format. The secondary function of the IP Board is to provide print control,
Control Panel control, Laser Unit control, networking via the USB, configuration setup, error
reporting, and job recovery. The IP Board connects to the MCU Board directly. The Control
Panel is connected to the IP Board and signals pass through the MCU Board via the IP Board.

The LVPS (PL18.1.34) generates +24VDC, +5VDC, and +3.3VDC from the AC power source
to supply each component.

The Transfer HVPS (PL18.1.28) provides high voltage to the 1st BTRs, which are part of the
Transfer Belt Assembly.

The Developer HVPS (PL18.1.14) provides high voltage to the Magnet Roller and BCR found
in each Imaging Unit.

The EEPROM Board (PL18.1.43) is non-volatile memory that stores machine information.

The Wireless Kit (PL18.1.27) is the adapter that controls the interface to the Wireless Network.

Figure 5 Printer Electrical Assemblies

The Control Panel Assembly (PL1.1.1) consists of the LCD, LED, and the switch. The assem-
bly displays the status of the machine with the LCD and LED, and controls the machine using
the switch.

The Rear Interlock Switch (PL14.1.3) detects the opening/closing of the Rear Cover.

Door Interlock Switch (PL19.1.21) detects the opening/closing of the Top Cover.

The Main Switch (PL18.1.31) controls AC power to the printer.

The MCU Board (PL18.1.13) manages the printing operation according to information obtained
through communications with the IP Board and from sensors and switches located throughout
the printer. The MCU Board performs these functions:
• Communicates with the Image Processor.
• Controls the print sequence.
• Distributes low DC voltages to various printer components.

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Xerox WorkCentre 6655 Color Multifunction Printer 8-17 Major IOT Assemblies
Major IIT Assemblies
IIT assemblies described in this section include:
• Scanner (IIT) Assembly
• DADF
Scanner Assembly
Scanner Assembly components are described below and appear in Figure 1:
• Carriage Motor — The stepping motor that drives the Carriage Assy.
• Scanner Home Position Sensor — The Carriage Assy frame functions as an actuator and
blocks the scanner home position sensor, thus detecting the registration position.
• CCD PWB — The circuit board mounted with the CCD image sensor that inputs the
image data.
Document scanning is performed by the carriage assembly in the Scanner Assembly. The car-
riage assembly, driven by the carriage motor, consists of the LED array for illuminating a docu-
ment, the CCD image sensor for photo electronic converting image data, the mirrors, and the
lens. The Carriage Assy in the IIT moves at the shifting speed corresponding to the set magni-
fication and irradiates the document by the LED array. The optical image of the document irra-
diated by the LED array is reflected by the multiple mirrors, passed through the lens, and then
scanned by the CCD image sensor. The Scanner Assembly is replaced as a singe FRU. No
component spare parts are available.

Figure 1 Scanner Assembly

DADF Assembly
DADF Assembly components are described below and appear in Figure 2:
• Document Sensor — Detects the presence or absence of a document on the DADF Doc-
ument Tray.
(Presence: entrance of light, absence: NO entrance of light)
• Cover Open Sensor — Detects whether or not the DADF Top Cover is open.
(Open: entrance of light, close: NO entrance of light)
• Scan Sensor — Located near side of the Takeaway Roll and detects the scanning timing.
(Presence: entrance of light, absence: NO entrance of light)
• Duplex Sensor — Detects that a reverse side of a document is nipped into the duplex
feed path by the torque of the Transport Roll, after scanning the front side of the docu-
ment is completed and then the document is reversed.
(Presence: entrance of light, absence: NO entrance of light)
• DADF Motor — The DADF Motor rotates the Nudger Roll, Feed Roll, Takeaway Roll,
Transfer Roll, and Exit Roll

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Major IIT Assemblies 8-18 Xerox WorkCentre 6655 Color Multifunction Printer
 Figure 2 DADF Assembly

Document Stopper
When a document is loaded in the DADF, the Document Stopper (Figure 3) is locked to prevent
the document from moving. When the DADF starts feeding, the front portion of the Pickup
Assembly is lowered unlocking the Document Stopper. Then, when the document’s lead edge
presses against the Document Stopper in the feed direction, the document is fed. When the
Figure 3 Document Stopper
paper feed is completed, the Pickup Assembly returns to its original position.
Pinch Roller Assembly
The Pinch Roller Assembly (Figure 4) is normally pressed against the Takeaway Roller by
spring pressure. Documents are fed between the Pinch Rollers and the Takeaway Roller to the
CVT Window by the rotation of the Takeaway Roller. When the media feed is completed, the
Pickup Assy returns to its original position

If a jam occurs between the Pinch Roller Assembly and the Takeaway Roller, it is hard to
retrieve documents due to the high spring pressure of Pinch Roller Assembly. In order to
retrieve jammed documents, open the DADF Cover Assembly to release the spring pressure,
and make enough clearance between the Pinch Rollers and the Takeaway Roller.

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Xerox WorkCentre 6655 Color Multifunction Printer 8-19 Major IIT Assemblies
 WorkCentre 6655 Options
WorkCentre 6655 options add media capacity, and functionality.

This section describes in detail the media path, sensors, major assemblies, and operational
characteristics for each of these options.
• 550-Sheet Feeder
• Wireless Adaptor
• Printer Stand
WorkCentre 6655 options are documented in their respective installation instructions.

Optional 550-Sheet Feeder

When an optional 550-Sheet Feeder (Figure 1) is installed under the printer, an additional 550-
sheet universal tray is available extending the media path. This tray is identical to the 550-
sheet tray standard with the printer. The feeder assemblies are also identical to those used for
Tray 1.

Optional trays are functionally equivalent in terms of the feeder mechanism that moves media
from the tray into the printer. The driving force from each feeder’s Feed Motor is transmitted via
a gear assembly to the Feed and Nudger Rollers, moving media from the tray into the printer.

Figure 4 Pinch Roller Assembly

Figure 1 Optional 550-Sheet Feeder

550 Option Feeder Board (PL10.1.10) controls each component in the optional tray.

The Turn Roller Clutch (PL10.1.8) transfers the drive of the 550 Option Drive Assembly to the
Turn Roller.

550 Size Switch Assembly (PL10.1.11) detects paper size, and presence or absence of paper
in the 550 paper cassette.

Principles of Operation 9/2014 Initial Issue - Xerox Internal Use Only

Major IIT Assemblies, WorkCentre 6655 Options 8-20 Xerox WorkCentre 6655 Color Multifunction Printer
550 Option Drive Assembly (PL10.1.9) consists of a DC motor that drives each Roller of the
paper feed section in the optional tray.

The 550 Pinch Chute Assembly (PL10.2.1) consists of the following components:
• No Paper Sensor — Detects presence or absence in the paper cassette.
• Regi Sensor — Detects that a lead edge of a sheet has reached the registration section.
• Feed Clutch (PL10.2.2) — Transfers the drive of the 550 Option Drive Assembly to the
Feed Roller.
Wireless Adaptor
An optional wireless adaptor is available (Figure 2).

Figure 2 Optional Wireless Adaptor

Printer Stand
An optional printer stand is available (Figure 3).

Figure 3 Optional Printer Stand

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Xerox WorkCentre 6655 Color Multifunction Printer 8-21 WorkCentre 6655 Options
Copyright © 2014, Xerox Corporation.
All rights reserved. Unpublished
rights reserved under the copyright
laws of the United States.

Part#: 705P01356