SERVICE MANUAL

A4 Full Color Laser Printer

EPSON AcuLaser C1100

SEPG04002

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 Notice:
„ All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic,
mechanical, photocopying, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.
„ The contents of this manual are subject to change without notice.
„ All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly
appreciate being informed of them.
„ The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof.
EPSON is a registered trademark of SEIKO EPSON CORPORATION.

General Notice: Other product names used herein are for identification purpose only and may be trademarks or registered trademarks of their
respective owners. EPSON disclaims any and all rights in those marks.

Copyright © 2004 SEIKO EPSON CORPORATION.

I&I CS/Quality Management & PL Department

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 PRECAUTIONS
Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipment.

DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing
procedures preceded by DANGER Headings.

WARNING Signals a precaution which, if ignored, could result in damage to equipment.

The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.

DANGER
1. ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR
REPAIR PROCEDURES.
2. NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL
ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.
3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL
INSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER
SUPPLY AND OTHER ELECTRONIC COMPONENTS.

WARNING
1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN.
2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING
PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO
THE POWER SOURCE.
3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR
REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.
4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC
WRIST STRAPS, WHEN ACCESSING INTERNAL COMPONENTS.

5. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUFACTURE; INTRODUCTION OF SECOND-
SOURCE ICs OR OTHER NON-APPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY.

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 About This Manual
This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the printer. The instructions and procedures included
herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page.

Manual Configuration Symbols Used in this Manual

This manual consists of six chapters and Appendix. Various symbols are used throughout this manual either to provide additional
CHAPTER 1.PRODUCT DESCRIPTIONS information on a specific topic or to warn of possible danger present during a
Provides a general overview and specifications of the product. procedure or an action. Be aware of all symbols when they are used, and always read
CHAPTER 2.OPERATING PRINCIPLES NOTE, CAUTION, or WARNING messages.
Describes the theory of electrical and mechanical operations of the
product. A D J U S T M E N T Indicates an operating or maintenance procedure, practice or condition
CHAPTER 3.TROUBLESHOOTING R E Q U IR E D that is necessary to keep the product’s quality.
Describes the step-by-step procedures for the troubleshooting.
CHAPTER 4.DISASSEMBLY / ASSEMBLY
Describes the step-by-step procedures for disassembling and assembling
Indicates an operating or maintenance procedure, practice, or condition
the product. C A U T IO N
that, if not strictly observed, could result in damage to, or destruction of,
CHAPTER 5.ADJUSTMENT
equipment.
Provides Epson-approved methods for adjustment.
CHAPTER 6.MAINTENANCE
Provides preventive maintenance procedures and the lists of Epson-
approved lubricants and adhesives required for servicing the product. May indicate an operating or maintenance procedure, practice or
APPENDIX Provides the following additional information for reference: C H E C K
P O IN T condition that is necessary to accomplish a task efficiently. It may also
• Connector pin assignments provide additional information that is related to a specific subject, or
• Electric circuit boards components layout comment on the results achieved through a previous action.
• Electrical circuit boards schematics
• Exploded diagram & Parts List Indicates an operating or maintenance procedure, practice or condition
W A R N IN G
that, if not strictly observed, could result in injury or loss of life.

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 Abbreviations
The following is a representative example of abbreviations (both original and common ones) used in this manual.
ADC............... Automatic Density Control HT..............................................Harf Tone ORN ..........................................ORANGE TR ................................................ Transfer
AG .................................... Analog Ground HUM...........................................Humidity PC................................Personal Computer VIO ..................................................Violet
APS............................... Auto Paper Select HVPS............ High Voltage Power Supply PCDC .........Pixel Count Dispense Control WHT ................................................White
ARC ................. Auto Registration Control ICDC ........Image Count Dispense Control PH .................................... Paper Handling XERO ....................................Xerographic
ASSY......................................... Assembly ID........................................Image Density PHD....................................... Printer Head Y ....................................................Yellow
ATS.......................... Auto Tray Switching (or Identification) PNK.................................................... Pink YEL................................................Yellow
B .......................................................Black IBT ..................Intermediate Belt Transfer POP ..................... Paper On Photoreceptor
BCR ............................... Bias Charge Roll (Intermediate Transfer Unit) PPM............................... Prints Per Minute
Bk .....................................................Black INTL,INLK .................................Interlock PR,P/R........................................... Process
BLK ..................................................Black IOT ...................... Image Output Terminal PV ........................................Print Volume
BLU ................................................... Blue K .......................................................Black PWB(A) ................... Printed Wiring Boad
BRN................................................ Brown L ..........................................................Left (Assembly)
BTR ............................. Bias Transfer Roll L/H ............................................Left Hand R ........................................................Right
(Transfer Unit) LD........................................... Laser diode R .........................................................Rear
C ........................................................Cyan LDD..........................Lightly Doped Drain R/H ..........................................Right Hand
CLN ...............................................Cleaner LED .......................... Light-emitting diode REF ............................................Refresher
CRU...............Customer Replaceable Unit LEF..................................Long Edge Feed REGI. .....................................Registration
CRUM .................................CRU Monitor LH..............................................Left Hand RH ...........................................Right Hand
CTRG .........................................Cartridge LV......................................... Low Voltage ROS....................... Raster Output Scanner
DET ...................................... Detoner Roll LVPS .............Low Voltage Power Supply ROT.................................................Rotary
DEVE. ...................................... Developer M ................................................. Magenta RTC.........................Rubber Tube Charger
DIAG. .......................................Diagnostic MAG.......................................... Mag. Roll RTN.................................................Return
DISP ........................................... Dispense MCU.......................Machine Control Unit SEF..................................Short Edge Feed
dpi ......................................... dots per inch MOB.................................. Marks On Belt SG ...................................... Signal Ground
DTS.........................................Detack Saw MOT ................................................ Motor SMH .................. Special Material Handler
DUP ............................................... Duplex MSI............................ Multi Sheet Inserter SNR.................................................Sensor
ESB............................Electro Static Brush N/P.............................................. No Paper SOL. ............................................ Solenoid
ESS ............................. Electric Subsystem NVM.......................Non Volatile Memory SOS ......................................Start Of Scan
F........................................................ Front OEM ..Original Equipment Manufacturing STM .......................... Single Tray Module
FEED,FDR ..................................... Feeder OHP............................... Overhead Project SW.................................................. Switch
FIP .....................Fault Isolation Procedure (In this manual, TEMP. ................................... Temperature
GND ..............................................Ground OHP means a transparent sheet.) TM........................................ Tray Module
GRN................................................. Green OP.............................................. Operation TNER,TNR ......................................Toner
GRY................................................... Gray OPC .................. Organic Photo Conductor TP ............................................Thermopile

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 Safety Information
To prevent accidents during a maintenance procedure, strictly observe the Warnings and Cautions and never depart from the instructions given in this document.
Do not do anything that is dangerous even if not specifically described in this manual.
In addition to the descriptions below and those given in this manual, there are many situations and circumstances that could result in serious bodily injury.
Always pay enough attention to secure safety when working with the printer.

Power Supply Mechanical Components

Before starting any service procedure, turn the printer off power and unplug the power When servicing any driving assembly (e.g., gears), first turn the power off and unplug
cord from the wall outlet. When the power supply cable must be connected, be aware the power cord. Then manually rotate the assembly.
of the potential for electrical shock and do all tasks by following the procedures in this
manual.

W A R N IN G Do not touch any live part unless instructed to do so. The power W A R N IN G Do not touch the driving part (e.g., gears) while the assembly
supply switch/inlet part (MAIN POWER SWITCH & INLET) is (printer) is operating.
live even when the power switch has been turned off.

Leg_Sec001_002EA

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 High Temperature Assembly
When working with hot parts (FUSER etc.) make sure to turn the power off, unplug the
power cable, and leave the printer until it cools down sufficiently to work with to
prevent burn injury.

W A R N IN G As the inside of the printer is high-temperature state immediately

after the operation, leave it more than 30 minutes before working.

Caution Label FUSER ASSY

(Refer to “Caution Label About High-temperature Surface”)

DUPLEX ASSY

Caution Label
(Refer to “Caution Label About High-temperature Surface”)
Leg_Sec001_022EA

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 Laser Beam

W A R N IN G „ Letting a laser beam get into your eye directly could result in Caution Label
loss of vision. (Refer to “Caution Label About High-temperature Surface”)

„ Never open the Cover where the Warning Label About Laser
Beam is affixed.
„ Before disassembling or assembling, be sure to turn the power
off.
„ If you need to work on the printer with power applied, strictly
follow the instructions in this manual. ROS ASSY
„ Understand hazardous nature of the laser beam, use extreme
caution to avoid injury of yourself and anyone around you.

C H E C K „ The laser beam has a narrower frequency band and more

P O IN T coherent phases than any other light (sunlight, electric light).
The beam has excellent monochromaticity and convergence,
thus it reaches long distances. Because of these characteristics,
the laser beam converges into one point, causing high density
and high temperature. And that is why a laser beam is harmful
to the human body.
„ The laser beam in this printer is invisible.
Leg_Sec001_003EB

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 Warning/Caution Labels † Warning label for Laser Beam
The label is attached on the top of the laser beam emitting unit (ROS ASSY) to
Warning labels and caution labels are attached on the corresponding locations on or in
alert the service personnel the danger of laser beam.
the printer.

C H E C K In maintenance work, check that the labels are free from peeling
P O IN T and soiling.

† Caution Label About High-temperature Surface

The labels are attached on the Fuser assy and the perimeter alerting the user to
avoid burn injury. Leg_Sec001_023EA
(Refer to “High Temperature Assembly”)

Leg_Sec001_018EA

Leg_Sec001_020EA

Leg_Sec001_019EA

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 Cautions relating to Toner cleaning
† To prevent ignition, explosion, burn, injury, etc., do not use a general vacuum
cleaner for cleaning dropped toner. (To do so may cause the toner to catch fire by
sparks in the vacuum cleaner.)

W A R N IN G Do not pick up dropped toner with a general vacuum cleaner. To

do so may cause ignition.

Leg_Sec001_014EA

Cautions relating to Storage of Paper

To achieve the appropriate printing results, unused paper that is stored outside of the
unit should be sealed up by packing material or put into a plastic bag to prevent it from
becoming moist.

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 Safety Devices SWITCH-INLK FUSER FUSER LOCK SWITCH SWITCH ASSY TOP

Use extra care when checking or servicing the safety devices (e.g., interlock switches,
SWITCH-INLK FRONT
fuses, thermostat). The printer's cover, control panel and any other parts which are
directly related to the user's safety should also be observed carefully.

As the major safety devices, the printer is equipped with the following four interlock
switches:
† SWITCH ASSY TOP
† SWITCH-INLK FRONT
† SWITCH-INLK FUSER
When any one of the above interlock switches turns off, +24VDC supply to the
motors and solenoid is cut off. The SWITCH ASSY TOP turns off when the
COVER ASSY TOP is opened. The SWITCH-INLK FRONT does when the
COVER FRONT ASSY U is opened, and the SWITCH-INLK FUSER does when
the COVER FUSER is opened.
† FUSER LOCK SWITCH
The FUSER LOCK SWITCH turns off when the latch lever of the FUSER ASSY
is released, then AC power supply to the Heater of the FUSER ASSY is cut off.
Leg_Sec001_024EA

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 Schematic Diagram of Safety System

Leg_Sec001_025EA

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 Revision Status

Revision Date of Issue Description

A 28 September, 2004 First release
B 13 JULY, 2005 <Modification>
Chapter 1:
• Table 1-2 Color mode (Unit: seconds or less) (p.23) / Modification
• Supported paper size, type and orientation (p.25) / Modification
• NOISE (p.29) / Modification
• Calibrating Printer (p.57) / Modification
• Figure 1-15 Status Sheet (Simplified version) (p.68) / Modification
• Print volume (pages/month) (p.33) / Modification
• 1.9.2 Conditions for Storage and Transport (p.39) / Modification
• 1.13 Life details (p.45) / Modification
• Setup Menu (p.50) / Modification
• Support Menu is deleted.
Chapter 2:
• Table 2-1 Sensors (p.115) / Modification
Chapter 4:
• 4.3.7 HOLDER ASSY RETARD MSI (p.313) / New information is added.
• 4.4.4 FRAME ASSY-PH (p.327) / New information is added.

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 EPSON AcuLaser C1100 Revision B

Contents
Chapter 1 PRODUCT DESCRIPTION 1.7.5 Insulation Resistance .................................................................................. 36
1.7.6 Withstand Voltage ...................................................................................... 36
1.1 Overview ............................................................................................................. 20 1.7.7 Leak Current ............................................................................................... 36
1.1.1 Engine features ........................................................................................... 20
1.8 Compatible Specification .................................................................................... 37
1.1.2 Controller features ...................................................................................... 20
1.8.1 Safety Standard........................................................................................... 37
1.1.3 Software features ........................................................................................ 20
1.8.2 Safety Standard (Laser Transmission)........................................................ 37
1.2 Basic Specifications............................................................................................ 21 1.8.3 EMI Standards ............................................................................................ 37
1.2.1 Process Specifications & System................................................................ 21 1.8.4 Power Supply Harmonics ........................................................................... 37
1.2.2 Printer Basic Specifications........................................................................ 21 1.8.5 Power Consumption ................................................................................... 37
1.3 Paper Specifications ............................................................................................ 30 1.8.6 Miscellaneous ............................................................................................. 37
1.3.1 Paper Type .................................................................................................. 30 1.9 Consumables/Periodic replacement unit ............................................................. 38
1.3.2 Paper that may cause printing defects, paper jams or printer malfunction. 30 1.9.1 Specifications.............................................................................................. 38
1.3.3 Available Paper by Feeder.......................................................................... 31 1.9.2 Conditions for Storage and Transport ........................................................ 39
1.3.4 Printing Area............................................................................................... 31
1.10 External Appearance and Unit Names .............................................................. 40
1.4 Reliability and Serviceability .............................................................................. 32 1.10.1 Unit names................................................................................................ 40
1.4.1 Reliability ................................................................................................... 32
1.11 Engine Restrictions............................................................................................ 42
1.4.2 Durability.................................................................................................... 33
1.4.3 Serviceability .............................................................................................. 33 1.12 Notes When Replacing Consumables and Installing Optional Products .......... 44
1.12.1 Consumables............................................................................................. 44
1.5 Service Conditions............................................................................................... 34
1.12.2 Optional Products ..................................................................................... 44
1.5.1 Ambient Temperature and Humidity.......................................................... 34
1.5.2 Air Pressure (Altitude)................................................................................ 34 1.13 Life details......................................................................................................... 45
1.5.3 Levelness .................................................................................................... 34 1.14 Controller Specifications................................................................................... 46
1.5.4 Illumination................................................................................................. 34 1.14.1 Controller Basic Specifications ................................................................ 46
1.5.5 Space Requirements.................................................................................... 34 1.14.2 Controller Configuration ......................................................................... 46
1.6 Conditions for Storage and Transport ................................................................. 35 1.14.3 External Interface Specifications.............................................................. 47
1.6.1 Ambient Temperature and Humidity.......................................................... 35 1.15 Control Panel..................................................................................................... 48
1.6.2 Storage Altitude .......................................................................................... 35 1.15.1 External Appearance and Names.............................................................. 48
1.6.3 Dropping ..................................................................................................... 35 1.15.2 Panel Settings List .................................................................................... 49
1.6.4 Vibration ..................................................................................................... 35 1.15.3 Explanation of Menu and Settings............................................................ 54
1.7 Electrical Characteristics ..................................................................................... 36 1.15.4 Special Operations.................................................................................... 55
1.7.1 Electrical Fast Transient /Bursts (AC Line Noise) ..................................... 36 1.16 Printer Status ..................................................................................................... 56
1.7.2 Instantaneous Outages ................................................................................ 36 1.16.1 List of Printer Messages ........................................................................... 56
1.7.3 Resistance to Static Electricity ................................................................... 36 1.16.2 Status Messages and Troubleshooting...................................................... 57
1.7.4 Inrush Current............................................................................................. 36 1.16.3 Error Messages and Troubleshooting ....................................................... 58

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 EPSON AcuLaser C1100 Revision B

1.16.4 Warning Messages and Troubleshooting.................................................. 62 2.7 Operating Modes ............................................................................................... 109
1.16.5 Service Call Error Messages..................................................................... 63 2.8 Control............................................................................................................... 110
1.17 Expanding the RAM.......................................................................................... 65 2.8.1 Paper size control...................................................................................... 110
1.18 Handling Precautions......................................................................................... 66 2.8.2 Control of laser radiation .......................................................................... 110
1.18.1 Precautions When Turning Off the Power................................................ 66 2.8.3 Process control.......................................................................................... 110
1.18.2 Precautions for High Temperature Parts................................................... 66 2.8.4 Belt position control ................................................................................. 113
1.19 Status Sheet ....................................................................................................... 67 2.8.5 Adjustment of the FUSER fixing temperature ......................................... 113
2.8.6 FUSER safety circuit ................................................................................ 113
1.20 Engine Status Sheet ........................................................................................... 70
2.8.7 Detection of service life of consumables and periodical replacement parts....
1.21 Recommended Operating Environment 113
(Host PC) .................................................................................................................. 71
2.9 Flying-start printing........................................................................................... 114
1.22 Paper Handling Algorithm ................................................................................ 72
2.10 Detection Mechanisms .................................................................................... 115
2.11 Principle of Electric Circuit Operation............................................................ 117
Chapter 2 OPERATING PRINCIPLES 2.11.1 Main Features ......................................................................................... 117
2.1 Print Process ........................................................................................................ 75 2.11.2 Outline Specifications............................................................................. 117
2.1.1 Print Process Overview............................................................................... 75
2.1.2 Print Process Diagram ................................................................................ 76 Chapter 3 TROUBLESHOOTING
2.1.3 Technical Explanation of Print Process...................................................... 77
3.1 Procedure for troubleshooting ........................................................................... 120
2.2 Flow of Print Data ............................................................................................... 86
3.1.1 Procedure for troubleshooting .................................................................. 120
2.2.1 Data Flow.................................................................................................... 86
3.1.2 Checking Installation Status ..................................................................... 120
2.3 Drive Transmission Path .................................................................................... 87 3.1.3 Precautions in Performing Troubleshooting Work................................... 121
2.3.1 DRIVE ASSY FEED.................................................................................. 87 3.1.4 Notes on Using FIP................................................................................... 122
2.3.2 MOTOR ASSY P/R, DRIVE ASSY PRO ................................................. 88 3.1.5 Warming-Up Flowchart at Power-ON ..................................................... 123
2.3.3 MOTOR ASSY MAG, MOTOR ASSY ROT............................................ 89
3.2 FIP ..................................................................................................................... 124
2.3.4 MOTOR ASSY DUP.................................................................................. 90
3.2.1 Outline ...................................................................................................... 124
2.3.5 MOTOR ASSY FSR................................................................................... 91
3.2.2 FIP Procedure ........................................................................................... 124
2.3.6 MOTOR-PH ............................................................................................... 92
3.3 FIP according to the printer message ................................................................ 125
2.4 Paper Feed ........................................................................................................... 93
3.3.1 List of Errors and Warnings ..................................................................... 125
2.4.1 MSI (Multi Sheet Inserter).......................................................................... 94
3.3.2 List of Service Request............................................................................. 130
2.4.2 Registration & FUSER ............................................................................... 95
3.3.3 Error Code FIP.......................................................................................... 134
2.4.3 500 Paper Feeder ........................................................................................ 97
2.4.4 Duplex......................................................................................................... 99 3.4 Printing Quality-related Trouble ....................................................................... 242
3.4.1 Printing-quality troubleshooting Entry Chart ........................................... 242
2.5 Xerographic ....................................................................................................... 100
3.4.2 Printing quality-related FIP ...................................................................... 244
2.5.1 ROS........................................................................................................... 101
2.5.2 Photoconductor Unit................................................................................. 102 3.5 Abnormal Noise-related Trouble....................................................................... 267
2.5.3 Development............................................................................................. 104 3.5.1 Abnormal noise-related troubleshooting entry chart ................................ 267
2.5.4 Second BTR & FUSER ............................................................................ 106 3.5.2 Abnormal Noise-related FIP..................................................................... 268
2.6 Electrical............................................................................................................ 107 3.6 Test Print ........................................................................................................... 274
3.6.1 Overview .................................................................................................. 274

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 EPSON AcuLaser C1100 Revision B

3.6.2 Printing Procedure of Test Print Pattern................................................... 274 4.3.10 SOLENOID PICK UP ............................................................................ 319
4.3.11 SENSOR PAPER EMPTY..................................................................... 321
Chapter 4 DISASSEMBLY AND ASSEMBLY 4.3.12 ACTUATOR EMPTY ........................................................................... 322
4.4 PH ASSY........................................................................................................... 324
4.1 Overview ........................................................................................................... 277 4.4.1 COVER-PH .............................................................................................. 324
4.1.1 Precautions................................................................................................ 277 4.4.2 CHUTE ASSY-REAR.............................................................................. 325
4.1.2 Before you start work ............................................................................... 279 4.4.3 CHUTE-REAR UP, CHUTE-REAR LOW ............................................. 326
4.1.3 List of Screws ........................................................................................... 280 4.4.4 FRAME ASSY-PH................................................................................... 327
4.1.4 Tools ......................................................................................................... 281 4.4.5 CLUTCH ASSY REGI............................................................................. 329
4.1.5 Conventions used in descriptions of procedures ...................................... 282 4.4.6 ROLL-REGI METAL .............................................................................. 330
4.2 COVER.............................................................................................................. 283 4.4.7 ROLL REGI RUBBER ............................................................................ 331
4.2.1 COVER ASSY TOP ................................................................................. 283 4.4.8 ROLL ASSY-PRE REGI.......................................................................... 333
4.2.2 TRAY EXTENSION, COVER TRAY..................................................... 284 4.4.9 SENSOR OHP.......................................................................................... 334
4.2.3 COVER FUSER ....................................................................................... 285 4.4.10 ACTUATOR-REGI................................................................................ 335
4.2.4 COVER TOP SIDE L ............................................................................... 286 4.4.11 SENSOR REGI....................................................................................... 336
4.2.5 COVER TOP SIDE R............................................................................... 287 4.4.12 MOTOR-PH ........................................................................................... 337
4.2.6 SWITCH ASSY TOP ............................................................................... 288 4.4.13 CLUTCH ASSY PRE REGI .................................................................. 338
4.2.7 SWITCH ASSY FRONT.......................................................................... 289 4.4.14 SWITCH-PH DOOR .............................................................................. 339
4.2.8 COVER RH, SLIDE BAR, COVER ROS WINDOW............................. 290 4.4.15 DRIVE ASSY-PH .................................................................................. 340
4.2.9 COVER MSI............................................................................................. 291 4.5 TRANSFER....................................................................................................... 341
4.2.10 COVER FRONT L, COVER FRONT ASSY U .................................... 292 4.5.1 CHUTE ASSY-FSR, COVER ASSY-RR 2ND ....................................... 341
4.2.11 OP PANEL (CONTROL, PANEL) ........................................................ 294 4.5.2 SENSOR FUSER IN ................................................................................ 344
4.2.12 COVER ASSY LH ................................................................................. 295 4.5.3 FRAME ASSY-2ND ................................................................................ 346
4.2.13 COVER ESS ........................................................................................... 297 4.5.4 2ND BTR ASSY ...................................................................................... 348
4.2.14 SWITCH ASSY FUSER, SWITCH-FUSER DOOR ............................. 298 4.5.5 CAM ASSY-2ND..................................................................................... 350
4.2.15 COVER INNER TOP ............................................................................. 299 4.5.6 SWITCH 2BTR COVER.......................................................................... 352
4.2.16 SWITCH-FRONT DOOR, SWITCH-INLK FRONT ............................ 300 4.5.7 SENSOR ASSY ADC .............................................................................. 353
4.2.17 COVER ASSY RH ................................................................................. 301 4.5.8 HOLDER-ADC 2ND ............................................................................... 354
4.2.18 COVER INNER L .................................................................................. 302 4.5.9 SENSOR 2BTR RETRACT..................................................................... 356
4.2.19 SWITCH-INLK FUSER......................................................................... 303 4.5.10 SENSOR IBT RETRACT ...................................................................... 357
4.3 MSI .................................................................................................................... 304 4.5.11 PLATE BIAS-2ND ASSY ..................................................................... 358
4.3.1 MSI ASSY ............................................................................................... 304 4.5.12 CAM ASSY-IBT CL .............................................................................. 360
4.3.2 ROLL ASSY MSI..................................................................................... 306 4.6 XERO ................................................................................................................ 361
4.3.3 ROLL MSI................................................................................................ 308 4.6.1 SENSOR TR-0 ......................................................................................... 361
4.3.4 CHUTE MSI............................................................................................. 309 4.6.2 GUIDE CRU ASSY D ............................................................................. 362
4.3.5 GUIDE SIDE L, GUIDE ASSY SIDE R ................................................. 310 4.6.3 LATCH ASSY D...................................................................................... 364
4.3.6 PLATE BOTTOM ASSY MSI................................................................. 311 4.6.4 ANTENNA ASSY.................................................................................... 365
4.3.7 HOLDER ASSY RETARD MSI.............................................................. 313 4.6.5 GUIDE CRU ASSY AD........................................................................... 367
4.3.8 PLATE ASSY RETARD.......................................................................... 315 4.6.6 LEVER-LATCH PR................................................................................. 370
4.3.9 OIL DAMPER .......................................................................................... 317 4.6.7 CAP-PLATE PR, PLATE-ASSY PR....................................................... 371

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 EPSON AcuLaser C1100 Revision B

4.6.8 LATCH ASSY AD ................................................................................... 372 4.12.2 COVER-R DUP...................................................................................... 413

4.6.9 BCR CLN XERO ASSY .......................................................................... 373 4.12.3 COVER-L DUP...................................................................................... 414
4.6.10 SENSOR TNER FULL........................................................................... 374 4.12.4 COVER-INV .......................................................................................... 415
4.7 ROS ................................................................................................................... 375 4.12.5 LINK-LATCH, LINK-BUTTON........................................................... 416
4.7.1 ROS ASSY ............................................................................................... 375 4.12.6 INVERTER ASSY DUP, TRANSPORT ASSY DUP........................... 417
4.7.2 CLEANER ASSY..................................................................................... 377 4.12.7 SOLENOID ASSY DUP ........................................................................ 419
4.8 DEVE ................................................................................................................ 378 4.12.8 ACTUATOR INV .................................................................................. 421
4.8.1 LATCH ASSY-ROTARY ........................................................................ 378 4.12.9 SENSOR UPPER PASS......................................................................... 422
4.8.2 ANTENNA ASSY-CTRG ....................................................................... 379 4.12.10 MOTOR ASSY DUP INV ................................................................... 424
4.8.3 ANTENNA CTRG ................................................................................... 380 4.12.11 ROLLER ASSY INVERTER............................................................... 426
4.8.4 HOLDER ASSY-BIAS ............................................................................ 381 4.12.12 CHUTE ASSY-INV LOW ................................................................... 427
4.8.5 SENSOR ROTARY HOME POSI ........................................................... 382 4.12.13 LATCH DUP R, LATCH DUP L ........................................................ 428
4.8.6 HOUSING ASSY-DEVE K, HOUSING ASSY-DEVE Y, HOUSING ASSY- 4.12.14 SWITCH-DUP DOOR ......................................................................... 430
DEVE M, HOUSING ASSY-DEVE C ................................................... 383 4.12.15 ACTUATOR DUP ............................................................................... 431
4.8.7 FRAME ASSY-ROTARY........................................................................ 386 4.12.16 SENSOR LOW PASS ......................................................................... 432
4.12.17 SUPPORT DUP.................................................................................... 433
4.9 FUSER............................................................................................................... 388
4.12.18 HINGE ASSY L ................................................................................... 434
4.9.1 FUSER ASSY........................................................................................... 388
4.12.19 HINGE ASSY R ................................................................................... 435
4.9.2 FUSER LOCK SWITCH.......................................................................... 390
4.12.20 COVER LOW-DUP TRANS ............................................................... 436
4.9.3 HARNESS ASSY MCU C/L.................................................................... 392
4.12.21 COVER UP-DUP TRANS ................................................................... 437
4.10 DRIVE............................................................................................................. 393 4.12.22 PAD DAMPER L ................................................................................. 438
4.10.1 DRIVE ASSY BTR ................................................................................ 393 4.12.23 PAD DAMPER R ................................................................................. 439
4.10.2 DRIVE ASSY PRO ................................................................................ 394 4.12.24 ROLLER ASSY DUP .......................................................................... 440
4.10.3 MOT ASSY FSR .................................................................................... 395 4.12.25 PWBA DUP-L ..................................................................................... 442
4.10.4 MOT ASSY MAG.................................................................................. 396 4.12.26 MOTOR ASSY DUP............................................................................ 443
4.10.5 MOT ASSY ROT ................................................................................... 397 4.12.27 ROLLER ASSY DUP OUT ................................................................. 445
4.10.6 MOT ASSY P/R ..................................................................................... 398
4.13 500 PAPER CASSETTE & 500 PAPER FEEDER ........................................ 446
4.10.7 MOT ASSY MICRO .............................................................................. 399
4.13.1 500 PAPER CASSETTE ASSY............................................................. 446
4.11 ELEC ............................................................................................................... 400 4.13.2 GUIDE END ASSY ............................................................................... 447
4.11.1 SENSOR HUM & TEMP....................................................................... 400 4.13.3 PLATE ASSY BOTTOM 500................................................................ 448
4.11.2 PWBA HVPS.......................................................................................... 401 4.13.4 GUIDE PAPER L ASSY 500, GUIDE PAPER R ASSY 500............... 450
4.11.3 PWB ASSY ROT ................................................................................... 402 4.13.5 COVER FRONT CST 500 ..................................................................... 451
4.11.4 PWBA CRUM ........................................................................................ 403 4.13.6 500 PAPER FEEDER ASSY (REFERENCE ONLY)........................... 452
4.11.5 PWBA MCU........................................................................................... 404 4.13.7 COVER LEFT 500 ................................................................................. 453
4.11.6 LV/HVPS................................................................................................ 407 4.13.8 CHUTE FDR ASSY 500........................................................................ 454
4.11.7 PWBA ESS (BOARD ASSY., MAIN) .................................................. 409 4.13.9 COVER RIGHT 500 .............................................................................. 455
4.11.8 PWBA FUSER CONT ........................................................................... 410 4.13.10 PWBA TRAY 500 ............................................................................... 456
4.11.9 CHASSIS ASSY ESS (REFERENCE ONLY) ...................................... 411 4.13.11 PWBA MOT......................................................................................... 457
4.12 DUPLEX ......................................................................................................... 412 4.13.12 DRIVE ASSY FEED............................................................................ 458
4.12.1 DUPLEX ASSY ..................................................................................... 412 4.13.13 SOLENOID FEED ............................................................................... 459

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4.13.14 MOTOR ASSY FEEDER..................................................................... 460 6.5 Consumables and Components needing Periodic Replacement........................ 506
4.13.15 CLUTCH ASSY FEED ........................................................................ 461 6.5.1 Consumables............................................................................................. 506
4.13.16 HARNESS-ASSY FEED 1................................................................... 462 6.5.2 Regular Replacement Parts....................................................................... 507
4.13.17 ROLL ASSY TURN 500...................................................................... 463 6.6 Glueing/Lubrication .......................................................................................... 508
4.13.18 SWITCH FEEDER DOOR................................................................... 464 6.6.1 Glueing ..................................................................................................... 508
4.13.19 HARNESS-ASSY FEED 2................................................................... 465 6.6.2 Lubrication................................................................................................ 509
4.13.20 CHUTE ASSY 500............................................................................... 466
4.13.21 HOLDER ASSY RETARD 500........................................................... 468
Chapter 7 APPENDIX
4.13.22 FILM ASSY FDR................................................................................. 470
4.13.23 STOPPER CST R ................................................................................. 471 7.1 Connectors......................................................................................................... 511
4.13.24 GUIDE CST R...................................................................................... 472 7.1.1 The List of Plugs and Jacks ...................................................................... 511
4.13.25 GUIDE CST L ...................................................................................... 473 7.1.2 P/J Layout Diagram .................................................................................. 513
4.13.26 STOPPER CST L ................................................................................. 475 7.2 Wiring Connection Diagrams............................................................................ 517
4.13.27 HOUSING ASSY FEED ...................................................................... 476 7.2.1 Marks used in the Overall Wiring Connection Diagram.......................... 517
4.13.28 SENSOR NO PAPER........................................................................... 478 7.2.2 Overall Wiring Connection Diagrams...................................................... 518
4.13.29 ACTUATOR NO PAPER CST ............................................................ 479 7.3 Wiring Connection Diagram between Parts ...................................................... 519
4.13.30 ACTUATOR T/R ................................................................................. 481 7.3.1 Marks used in the Diagram and Instructions for Use ............................... 519
4.13.31 SENSOR T/R........................................................................................ 482 7.3.2 Composition of the Wiring Connection Diagram between Parts ............. 520
4.13.32 ROLL ASSY FEED 500....................................................................... 483
7.4 Unpacking the Printer........................................................................................ 533
7.5 Parts List............................................................................................................ 534
Chapter 5 ADJUSTMENT
7.6 Exploded Diagrams ........................................................................................... 539
5.1 Overview ........................................................................................................... 486 7.7 Circuit Diagrams ............................................................................................... 561
5.1.1 Instructions ............................................................................................... 486
5.1.2 Part/unit-based adjustment items.............................................................. 486
5.1.3 Writing USB ID........................................................................................ 487
5.1.4 Controller Firmware Update..................................................................... 489
5.1.5 MCU Firmware Update ............................................................................ 490

Chapter 6 MAINTENANCE
6.1 Overview ........................................................................................................... 492
6.2 About On-site Servicing .................................................................................... 494
6.2.1 On-site Servicing Flowchart ..................................................................... 494
6.2.2 Details of On-site Servicing...................................................................... 495
6.3 Maintenance Menu ............................................................................................ 497
6.3.1 Maintenance Menu Items ......................................................................... 497
6.3.2 Entry into Maintenance Mode .................................................................. 498
6.4 Sheet for Servicing ............................................................................................ 499
6.4.1 Engine Status Sheet .................................................................................. 499
6.4.2 Print Log Report ....................................................................................... 504

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 CHAPTER

1
PRODUCT DESCRIPTION

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1.1 Overview 1.1.2 Controller features

† Host-based controller
This printer is a conventional 4-cycle color page printer that takes advantage of laser
and electrophotographic technologies. „ CPU : VR4305 (66.7 MHz)
„ RAM: 32 MB as standard, can be expanded up to 256 MB
1.1.1 Engine features † Operation panel with LCD
† New compact and light engine, which enables 600 dpi † Three Built- in interfaces
445 (W) x 445 (D) x 439 (H) mm, 25 kg
„ Parallel interface (IEEE 1284 compliant, Supports ECP)
† Print speed (when printing A4)
Simplex printing: 5.0ppm (color) / 25.0 ppm (monochrome) „ USB interface (Rev. 2.0 HS, Supports bi-directional (D4))
Duplex printing: 5.0 ppm (color) / 17.5 ppm (monochrome) „ Network interface
† Supports automatic duplex printing (option) (standard or option)
† Paper supply
Standard: MP Tray (Up to 180 sheets of 80g/m2 paper) 1.1.3 Software features
Option: Paper cassette unit (Up to 680 sheets of 80g/m2 paper) † ESC/PageS03
† Paper eject capacity is 250 sheets, face-down only. † With the Flying-Start Printing System, color printing speed has improved.
† 5 types of consumables; 4 Toner Cartridges for each of CMYK and † Supports Network interface board without replacing program DIMM in the main
Photoconductor Unit. A CSIC chip is on each of them. unit.
The Photoconductor Unit incorporates a transfer belt and waste toner box

PRODUCT DESCRIPTION Overview 20

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 EPSON AcuLaser C1100 Revision B

1.2 Basic Specifications PRINTING SPEED MODE

† Color mode (F/C)

1.2.1 Process Specifications & System „ Standard mode : Feed (print) papers at the maximum speed of the color
† Printing method : Semiconductor laser beam scanning and dry mode.
electrophotographic process with two ingredients
„ Low speed mode 1 : Feed paper at low speed to maintain fixation when
† Light source : Semiconductor laser printing on thick paper over 28 lb (105g/m2) (including
envelopes/labels).
† Photoconductor : Organic photoconductor
„ Low speed mode 2 : Feed paper at low speed to maintain fixation when
† Charging : Roller charging system
printing on transparencies.
† Development : Two ingredients
† Monochrome mode (B/W)
No contact developing system
„ Standard mode : Feed paper (print) at the maximum speed of the printer.
† Toner : Made up of two nonmagnetic ingredients
„ Low speed mode : Feed paper at low speed to maintain fixation when
† Primary transfer : Intermediate transfer belt method
printing on thick paper over 43 lb (163 g/m2) (including
† Fixing : Heat roller and fuser belt system transparencies/envelopes).

1.2.2 Printer Basic Specifications

RESOLUTION

600 dpi

WARMING UP TIME

„ 37 seconds or less: From turning the power on to ready-to-print status.

(at 22°C, 55% RH, rated voltage, 32MB memory)
„ 30 seconds or less: From standby mode to ready-to-print status
(at 22°C, 55% RH, rated voltage, 32MB memory)

PRINT MODE

† Color mode : Use four toners (CNYK) to print in full color

† Monochrome mode : Use only black toner (K) and the highest print speed is
available.

PRODUCT DESCRIPTION Basic Specifications 21

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PRINTING MODE BY PAPER TYPE

Table 1-1. Printing mode by paper type

Printing speed mode
Paper type
F/C B/W
64 to 80g/m2
Plain paper Standard Standard
(RX-80/4024)
For reverse side of paper
Plain paper (Back) when feeding manually to Standard Standard
print on both sides.
81 to 105g/m2
Semi-thick paper (EPSON High quality Plain Standard Standard
paper)
For reverse side of paper
Semi-thick paper (Back) when feeding manually to Standard Standard
print on both sides.
Low speed
Thick paper 106 to 163g/m2 Standard
mode 1
For reverse side of paper
Low speed
Thick paper (Back) when feeding manually to Standard
mode 1
print on both sides.
Low speed Low speed
Extra thick paper 164 to 210g/m2
mode 1 mode
For reverse side of paper
Low speed Low speed
Extra thick paper (Back) when feeding manually to
mode 1 mode
print on both sides.
Transparencies Low speed Low speed
Transparencies
(Color, Monochrome) mode 2 mode
Low speed
Labels Labels Standard
mode 1
Envelopes for each country Low speed Low speed
Envelopes
(75 to 105g/m2) mode 1 mode
Low speed Low speed
Coated paper 105 to 210g/m2
mode 1 mode
For reverse side of paper
Low speed Low speed
Coated paper (Back) when feeding manually to
mode 1 mode
print on both sides.

PRODUCT DESCRIPTION Basic Specifications 22

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FIRST PRINT TIME CONTINUOUS PRINTING SPEED

The time from receiving the Start command to when trailing edge of the paper leaves Note that the time given in the tables below does not apply when the printer is in the
the paper eject roller. Note that the time given in the tables below does not apply when conditions described in “1.11 Engine Restrictions” (p42).
the printer is in the conditions described in “1.11 Engine Restrictions” (p42).
† Monochrome mode*1
Table 1-2. Color mode (Unit: seconds or less) Table 1-4. List of continuous printing speed (Unit: ppm)
Duplex Simplex printing Duplex printing
Simplex printing
printing Paper size
Standard Low speed Standard
Paper Low speed 1
size A4, A5, B5, LT, GLT, EXE, HLT 25.0 4.0 17.5
Standard Label / Low speed 2 Standard
Thick paper Envelope / Envelope --- 4.0 ---
Coated
/ Extra Thk Postcard
paper User defined paper size (Length)
25.0 4.0 ---
A4 17 27 24 27 28 29 297.00mm or less
LTR 17 27 24 27 28 29 Note *1: For details on the paper orientation, see “ Supported paper size, type and
orientation” (p25)
† Color mode*1
Table 1-3. Monochrome mode (Unit: seconds or less) Table 1-5. List of continuous printing speed (Unit: ppm)
Simplex printing Duplex printing Duplex
Paper size Simplex printing
Standard Low speed Standard Paper size printing
A4 9 17 17 Standard Low speed 1 Low speed 2 Standard
LTR 9 17 17 A4, A5, B5, LT, GLT, EXE, HLT 5.0 2.3 1.9 5.0
Envelope --- 2.3 --- ---
User defined paper size (Length)
5.0 2.3 1.9 ---
297.00mm or less
Note *1: For details on the paper orientation, see “ Supported paper size, type and
orientation” (p25).

PRODUCT DESCRIPTION Basic Specifications 23

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PAPER FEED REFERENCE COMBINATION WITH OPTIONAL CASSETTE

Reference position to feed paper (in any size) is always center of the feeders. By attaching the optional 500-sheet cassette, the paper supply capacity can be
increased as follows.
PAPER FEED
Table 1-7. Combination with optional cassette
Table 1-6. Paper feed
Combination Total Capacity
Capacity Available paper
Feeder (sheets, or height of Paper type/Paper size Standard MP tray 180 sheets
piled sheets)
basis weight 680 sheets
Option 500-sheet cassette 500 sheets
Standard paper:
180 sheets 82 g/m2 Note : Standard paper: with EPSON high quality plain paper (82 g/m2)
EPSON COLOR LASER paper
RX-80 80 g/m2
180 sheets
4024(20lb) 75 g/m2
Plain paper/recycled paper:
20 mm A4, A5, B5, LT, GLT, HLT 64 to 80 g/m2
Executive
75 sheets Transparencies: A4, Letter ---
75 sheets Labels: A4, Letter ---
Standard

MP tray 20 mm Semi Thick paper 81 to 105 g/m2

20 mm Coated paper 105 to 210 g/m2
Thick paper:
106 to 163 g/m2
20 mm A4, A5, B5, LT, GLT, HLT,
164 to 210 g/m2
Executive
Envelopes
20 sheets C5, C6, Com-#10, DL, Monarch, 75 to 105 g/m2
ISO-B5
User defined size:
20 mm Width : 90 to 216 mm 64 to 210 g/m2
Length : 139.7 to 297 mm
500-sheet
Option

cassette 500 sheets A4, Letter 64 to 105 g/m2

(C1)
Duplex unit --- A4, LTR, B5, Executive 64 to 105 g/m2
Note *1: Refer to “1.3 Paper Specifications” (p30).
*2: Environmental condition for the capacity: 22 ºC/55% RH.

PRODUCT DESCRIPTION Basic Specifications 24

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SUPPORTED PAPER SIZE, TYPE AND ORIENTATION

Table 1-8. List of supported paper size, type and orientation

Paper size Dimensions in mm (inches)
Paper MP tray 500-sheet cassette Paper orientation Duplex printing
Vertical (length) Horizontal (width)
A4 297.00 210.00 { { SEF z
A5 148.00 210.00 { --- SEF ---
B5 257.00 182.00 { --- SEF z
Standard

LETTER 279.40 (11.00") 215.90 (8.50") { { SEF z

HALF LETTER 215.90 (8.50") 139.70 (5.50") {*1 --- SEF ---
GLT 266.70 (10.50") 203.20 (8.00") {*1 --- SEF ---
EXECUTIVE 266.70 (10.50") 184.15 (7.25") { --- SEF z
User defined paper size 139.70 to 297.00 90.00 to 216.00 { --- Discretionary ---
A4 : 297.00 A4 : 210.00 { --- SEF ---
Transparency
LT : 279.40 LT : 215.90 { --- SEF ---
A4 : 297.00 A4 : 210.00 { --- SEF ---
Labels
LT : 279.40 LT : 215.90 { --- SEF ---
Special paper

MONARCH*3 98.43 (3 7/8) 190.5 (7 1/2) { --- SEF ---

Com-#10 241.30 (9 1/2) 104.78 (4 1/8) { --- SEF ---
Envelopes*2

DL 110.00 220.00 { --- SEF ---

C5 229.00 162.00 { --- SEF ---
C6 114.00 162.00 { --- SEF ---
ISO-B5 250.00 176.00 { --- SEF ---

Note *1 : Paper supported only by controller firmware (handled as user defined size by the video I/F)
*2 : For the orientation of envelopes, refer to “Envelope orientation” (p.26).
*3 : Be sure to set it with its flap opening, but if the flap width is 110mm or less, the envelope cannot be fed.
{ : Feeding is possible by specifying the size with the operation panel as the printer has no auto-detection function.
z : Duplex printing is available.
--- : Not available
SEF (Short Edge Feed) : Set paper to be loaded from its short side.
LEF (Long Edge Feed) : Set paper to be loaded from its long side.

PRODUCT DESCRIPTION Basic Specifications 25

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† Envelope orientation DIMENSIONS AND WEIGHT

Paper feed † Dimensions and weight of each unit
direction
Table 1-9. Dimensions and weight
Width Depth Height Weight
(mm) (mm) (mm) (kg)
Envelope type Com-10 DL / C6*1 MONARCH*2 C5 / ISO-B5 Main unit 445 445 439 25
NOTE 1: Set envelopes with its print surface facing up 500-sheet cassette unit 440 446 130 8
2: Image quality and feed is not guaranteed when printing on the back side (flap side) of Duplex unit 435 210 470 4
envelopes.
NOTE 1: Manufacturing tolerance is ± 5 mm in dimensions and ± 0.5 kg in weight.
Note *1: Envelopes with adhesive or tape are not available.
2: Consumables are not included in the main unit weight (including controller).
*2: Be sure to set it with its flap opening, but the flap width is 110mm or less, the
enbelope cannot be fed. 445mm 445mm

† The printing surface set direction

„ Set paper with printing surface facing up
(Both MP tray and 500-sheet cassette)

Paper feed direction

439mm
Printing surface

Figure 1-1. Dimensions (Main Unit)

PAPER EJECT CAPACITY

250 sheets, Face down only

NOTE: Conditions of the capacity: 22 ºC/55% RH, standard paper

(simplex/duplex printing).
The print ratio is 5% for both B/W and color printing
(With color printing, 5% for each color)

PRODUCT DESCRIPTION Basic Specifications 26

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 EPSON AcuLaser C1100 Revision B

† Dimensions and weight with options installed 510mm

Table 1-10. Dimensions and weights with options installed

Width Depth Height Weight
(mm) (mm) (mm) (k)
Main unit + 500-sheet cassette unit 445 460 570 33
Main unit + Duplex unit 445 510 473 29

473mm
Main unit
+
500-sheet cassette unit 445 510 604 37
+
Duplex unit

NOTE 1: Manufacturing tolerance is ± 5 mm in dimensions and ± 0.5 kg in weight.

2: Consumables are not included in the main unit weight (including controller).
Figure 1-3. Dimensions (Including Options) - 2
445mm 460mm

510mm
570mm

Figure 1-2. Dimensions (Including Options) - 1 604mm

Figure 1-4. Dimensions (Including Options) - 3

PRODUCT DESCRIPTION Basic Specifications 27

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CONSUMABLES AND PERIODIC REPLACEMENT UNIT POWER CONSUMPTION

Table 1-11. List of Consumables and periodic replacement unit The maximum rated current and power consumption are measured with all engine
options and controller options installed.
Classification Replacement unit
Toner Cartridge Table 1-12. List of power consumption
(Black, Cyan, Yellow, Magenta) 110 V 220 V
Consumables
Photoconductor Unit Maximum rated current 7.0A 4.0A
(with waste toner box and transfer belt)
Maximum 693W 782W

Power consumption
FUSER ASSY
Color 177W 176W
Periodic replacement units HOUSING ASSY-DEVE (Deverloper) Continuous printing average
Monochrome 263W 257W
2ND BTR ASSY
Average during standby with the heater on 63W 61W
NOTE: For detailed specifications, refer to “1.9 Consumables/Periodic Average in low power mode with the heater off 14W 16W
replacement unit” (p38).
Power supply off 0W 0W

POWER SUPPLY

† Power supply operating voltage/frequency

CONSUMPTION CURRENT
„ AC 120 V ± 10% 50 Hz /60 Hz ± 3 Hz
„ AC 220 V/240 V ± 10% 50 Hz /60 Hz ± 3 Hz † 500-sheet cassette (option)
† Power supply for the controller „ 5 V/ 0.1A or less
„ DC 5.0 V± 5%, 1A or less „ 24 V/ 0.5A or less
„ DC 3.3 V± 5%, 3 A or less † Duplex (option)
„ 5 V/ 0.1A or less
„ 24 V/ 0.3A or less

PRODUCT DESCRIPTION Basic Specifications 28

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NOISE

† Sound pressure
Table 1-13. Sound pressure
Printing mode Standby mode Sleep mode
Main unit 53dB Background noise Background noise
NOTE 1: The method of measuring and calculation conforms to ISO-7779.
2: Values mentioned above are actual measurement value.
† Sound power
Table 1-14. Sound power
Printing mode Standby mode Sleep mode
Main unit 6.4B Background noise Background noise
NOTE 1: The method of measuring and calculation conforms to ISO-7779.
2: Values mentioned above are actual measurement value.

EXHAUST GAS

† Ozone density : 0.02 mg/m3 or less (the measuring method conforms to BAM)
† Styrene density : 0.02 mg/m3 or less
† Dust density : 0.075mg/m3 or less (the measuring method conforms to BAM)
† TVOC : 0.2 mg/m3 or less

PRODUCT DESCRIPTION Basic Specifications 29

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1.3 Paper Specifications 1.3.2 Paper that may cause printing defects, paper jams
or printer malfunction
1.3.1 Paper Type † Transfer paper (carbon paper, non-carbon paper), thermal paper, impact paper,
acid paper
† Standard paper
† Paper that is too thin or too thick
„ Monochrome: RX-80 paper (monochrome), 4024 paper (20 lb)
† Paper that is wet or damp
„ Color: EPSON Color Laser Paper
† Paper with special coatings or color printer paper with processed surfaces
† Plain paper
† Glossy (too slick) paper, or paper with too rough surface
„ 64 g/m2 to 105 g/m2
(Commonly used copy paper, recycled paper, high quality plain paper) † Paper that the roughness is significantly different by side
„ Recommended recycled paper: Steinbeis Recycling Copy classic † Paper with punch holes or perforations
† Special Media † Creased, curled or torn paper
„ EPSON transparency sheets (A4) † Irregularly shaped paper or paper with non-perpendicular corners
„ Labels † Labels that peel off easily
„ Thick paper (106 g/m2 to 210 g/m2) † Paper with glue, staples or paper clips attached to it
„ Envelope † Special paper for ink jet applications (super-fine, glossy, glossy film, etc.)
„ EPSON COATED PAPER † Paper previously used in a thermal or ink jet printer
† Transparencies for other color laser printers or color photocopiers
C H E C K „ lb : Ream weight = Total weigh of 500 sheets of 17" x 22" † Paper that has been already printed by other color/monochrome laser printers or
P O IN T sized paper photocopiers
„ g/m2 : 1g/m2 = 0.2659763lb
† Sheets of paper stuck together
„ Before purchasing a large amount of paper, test the paper if it
can be printed normally. † Postcards for ink jet printers, unofficial postcards, and adhesive postcards
† Iron print coated paper (for both ink jet and laser printers)
† Paper that is deteriorated or discolored, due to temperatures lower than 180 ºC.
† When postcards with illustrations are used, the paper feed roller may be soiled
with paper dust, and these postcards may not be fed properly. In this case, cleaning
is required in accordance with “ MAINTENANCE” (p.491)

PRODUCT DESCRIPTION Paper Specifications 30

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1.3.3 Available Paper by Feeder 1.3.4 Printing Area

Table 1-15. Types of Paper Feed
MAXIMUM PRINTABLE AREA
Special paper
Standard Plain † Width: 216.00 mm x Length: 297.00 mm
Feeder Trans- Thick Enve- Coated
paper paper Labels
parency paper lopes paper NOTE: Continuous printing beyond the guaranteed printing area (border 4mm)
causes soiling inside the mechanism.
Standard

MP tray { ‹ ‹ ‹ ‹ ‹ ‹
GUARANTEED PRINTING AREA
Duplex unit { ‹ X X X X X
Option

500-sheet The guaranteed printing area is shown below. The minimum left, right, top and bottom
{ ‹ X X X X X margins are 4 mm for any type of paper.
cassette unit
Note :
{ : Paper feed and image quality is guaranteed. 4mm 4mm
‹ : Paper feed and printing is possible. However, this is limited to types of paper for general
applications. Image quality is not guaranteed.

4mm
X : Feed is not possible.

Guaranteed
printing area
4mm

Figure 1-5. Guaranteed printing area

PRODUCT DESCRIPTION Paper Specifications 31

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1.4 Reliability and Serviceability NOTE 1: Environmental conditions: Normal operating environment
2: Paper size: Regular size
3: Humidity: Newly unpackaged paper
1.4.1 Reliability
4: Paper type: The 500-sheet cassette does not use special paper
MECHANICAL LIFETIME 5: Multiple-sheet feed rate: Conditions when adding new paper onto remaining paper in
the tray or cassette are not considered.
† Main unit:
„ Color:Monochrome = 2:1 : 200, 000 pages or 5 years, whichever comes first. PRINTING START POSITION ACCURACY
„ Color only : 150, 000 pages or 5 years, whichever comes first. Table 1-17. Printing start position accuracy
„ Monochrome only : 200, 000 pages or 5 years, whichever comes first. Simplex Duplex
† 500-sheet cassette : 200, 000 pages or 5 years, whichever comes first. printing printing

† Duplex unit : 200, 000 pages or 5 years, whichever comes first. Main scanning direction
±2.0mm ±2.0mm
Reference point (c)
MPBF Sub-scanning direction
±2.5mm ±2.5mm
Reference point (a)
† Main unit: 50, 000 pages

NOTE: MIBF: 150, 000 images

Number of images : 4 colors (Y, M, C, K) in color mode for 1 page, c a b
so 4 images/page.
Calculated as Color : Monochrome = 2 : 1.
Monochrome : (50, 000 × 1/3) = 16, 700 pages

Feed direction
Color : (50, 000 × 2/3 × 4 colors) = 133, 200 pages Printable area f
MIBF : 16,700 + 133,200 = 149,900 images
(approx. 150,000 images)

PAPER FEED RELIABILITY

d
Table 1-16. Paper feed reliability
Standard paper Plain paper Special paper e
Reliability issue 500-sheet 500-sheet 500-sheet
MP tray MP tray MP tray
cassette cassette cassette Figure 1-6. Printing start position accuracy
Simplex 1/3, 000 1/5, 000 1/2, 000 1/3, 000 1/100 ---
Jam rate
Duplex 1/1, 800 1/3, 000 1/2, 000 1/1, 800 --- ---
Multiple-sheet feed rate 1/1, 500 1/2, 500 1/1, 000 1/1, 500 1/50 ---

PRODUCT DESCRIPTION Reliability and Serviceability 32

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SKEW 1.4.2 Durability

Table 1-18. Skew PRINT VOLUME (PAGES/MONTH)
A4 Simplex printing Duplex printing † Average : 3, 000 pages/month
Main scanning direction (| a-b |) 1.1mm 1.1mm
† Maximum : 30, 000 pages/month
Sub-scanning direction (| c-d |) 1.0mm 1.0mm

Table 1-19. Length standard of measurement 1.4.3 Serviceability

A4
MEAN TIME TO REPAIR
Simplex printing Main scanning direction (e) 179.8 mm
Duplex printing Sub-scanning direction (f) 139.9 mm † MTTR : Within 30 minutes (average).
(The MTTR value indicated above represents the time for service
personnel to locate and correct the malfunction only, and the time for
examining malfunction is not included.)
HEIGHT OF CURL OF OUTPUT PAPER

Table 1-20. Height of curl of output paper

Paper type Curl height
Standard paper,
15 mm or less
Plain paper
Other special papers No regulation
NOTE 1: The same for simplex and duplex printing

PRODUCT DESCRIPTION Reliability and Serviceability 33

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1.5 Service Conditions 1.5.5 Space Requirements

In order to ensure that the printer operates properly, provide at least as much space as
1.5.1 Ambient Temperature and Humidity shown in the diagram below.

Table 1-21. 870mm

100mm 300mm 280mm
Temperature (ºC) Humidity (%RH) Other
Operating 5 to 32 15 to 85
No condensation
Non-operating -20 to 40 5 to 85

1.5.2 Air Pressure (Altitude)

700mm
65 to 101kPa (0 to 3, 100m or less)

1.5.3 Levelness
Difference between front and back: 5mm or less (at 445mm)
Difference between left and right: 10mm or less (at 445mm)
(165)mm
1190mm
1.5.4 Illumination
400mm
3, 000 lx or less (do not expose to direct sunlight)
830mm

Figure 1-7. Space Requirements

PRODUCT DESCRIPTION Service Conditions 34

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1.6 Conditions for Storage and Transport 1.6.4 Vibration

There should be no damage under the following conditions
1.6.1 Ambient Temperature and Humidity † Frequency : 5 to 55 Hz
Table 1-22. † Acceleration : 1.5 G
Condition Temperature (°C) Humidity*1 (%RH) Guarantee period
However, between 5 to 10 Hz, constant 7.5 mm
double amplitude is assumed.
Normal 12 months after
conditions
0 to 35 15 to 80
manufacture † Frequency sweep : Logarithmic sweep 10 minutes for one-way

Harsh High 35 to 40 High 80 to 95 † Direction of application : X, Y, Z directions

Max. 48 hours
conditions Low -20 to 0 Low 5 to 15 † Number of cycles : 3 cycles for each of XYZ directions (each 1 hour)
Note *1: Non-condensing

1.6.2 Storage Altitude

0 to 3, 100 m or less
For air transport, 0 to 15, 000 m. However, this assumes that the cargo compartment is
maintained at 70.9275 kPa or higher.

1.6.3 Dropping
There should be no damage on 1 corner, 3 edges, and 6 sides of the packages under the
conditions below.

Table 1-23.
Drop
Standard Main unit 610mm
500-sheet cassette unit 760mm
Option
Duplex unit 910mm

PRODUCT DESCRIPTION Conditions for Storage and Transport 35

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1.7 Electrical Characteristics 1.7.4 Inrush Current

† 1/2 cycle
NOTE: The following sections do not include any optional units. 100 A or less (0-peak) : Including heater inrush
(Conditions: Above 23 ºC with cold start)
1.7.1 Electrical Fast Transient /Bursts (AC Line Noise)
Ensure the following conditions using evaluation methods compliant with IEC61000-
1.7.5 Insulation Resistance
4-4. † 10 MΩ or more
† 1 kV : No errors excluding insignificant dot errors
† 2 kV : No damage to parts
1.7.6 Withstand Voltage
There should be no break down during application of the voltages shown below.
1.7.2 Instantaneous Outages Leak current should be 20mA or less when applying the voltage for one minute.

No effect on printing quality. Table 1-24. Withstand Voltage

† DIP : 1 cycle 100% (at -10% of rated current) Between inlet and non-charged Between primary and secondary
metal parts power transformers.
120V AC 1000 V AC 1500 V
1.7.3 Resistance to Static Electricity
200V series AC 2000V AC 3000V
Ensure the following conditions using evaluation methods compliant with
IEC61000-4-2 CISPR 24. 1.7.7 Leak Current
† Contact electric discharge 5 kV † 120 V : 3.5mA or less
: No error on any device after applying
† 220 V series : 3.5mA or less
† Aerial electric discharge 10 kV
: No error on any device after applying

PRODUCT DESCRIPTION Electrical Characteristics 36

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1.8 Compatible Specification 1.8.4 Power Supply Harmonics

JBMIA harmonics control guidelines
1.8.1 Safety Standard
Table 1-25. Safety Standards
1.8.5 Power Consumption
Model Type Applicable Standards Conforms to International Energy Star Program standards

UL60950 3rd Edition

120 V
CSA C22.2 No.60950-00 1.8.6 Miscellaneous
230 V Compliant with IEC60950 3rd † Toner : Have no affect on the human body (conforms to
OSHA, TSCA, EINECS)

1.8.2 Safety Standard (Laser Transmission) † OPC : Have no affect on the human body (conforms to
OSHA)
Table 1-26. Safety Standards (Laser Transmission)
† Ozone generation : Conforms to UL478 5th edition
Model Type Applicable Standards
† Materials : Does not contain any materials prohibited in each
120V FDA21CFR Chapter 1, Subchapter J, Section 1010, 1040 country, nor harmful substances above the permitted
IEC60825 Class 1 Laser Product values
200 V series CE Directive
Nordic Agency Approvals

NOTE: <Reference> Laser specifications

Wavelength (shortest to longest) : 770 to 790nm
Maximum average radiant power : 5mW

1.8.3 EMI Standards

Table 1-27. EMI Standards
Model Type Applicable Standards
120 V FCC Part 15 Subpart B, Class B (ANSI C63.4/11.4D)
EN55022 (CIRSPR Publication22), Class B
230 V EN61000-3-2 (Harmonics) Class A
EN61000-3-3 (Flicker)

PRODUCT DESCRIPTION Compatible Specification 37

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1.9 Consumables/Periodic replacement unit Note *1: Approximate number of printed pages using A4 continuous printing at 5% image
occupation rate.
The cartridge lifetime varies according to the paper size and type of printing (toner
C A U T IO N The print page-based service life values of the Consumables and save mode etc.)
Periodical Replacement Parts are guidelines. The number of *2: Monochrome : Color = 1:2, Print ratio is 5% (A4)
printable pages changes depending on how they are printed. The The lifetime depends on printing method and the frequency of switching the power.
number of printable pages decreases depending on the intermittent *3: Monochrome : Color = 1:2
printing (where a few pages, one to several pages, are printed each
time), paper size, paper orientation, thick paper printing, printed
document, frequent power-on/off, etc. Hence, the number of
printable pages of the consumables and periodical replacement
parts may become less than a half depending on the operating
conditions and environment of the user.

1.9.1 Specifications
Table 1-28. Consumables/Periodic replacement unit
External
Lifetime Weight
Name Configuration dimensions
(pages) (kg)
(mm)
1, 500*1 52.7 (W) 0.2
Toner Cartridge
Toner hopper 285.6 (D)
(C, M, Y, K) 4, 000*1 0.27
58.4 (H)
14, 000*2
Transfer belt Monochrome: 310 (W)
Photoconductor Unit Photoconductor 42,000 280 (D) 2.8
Waste toner box Color: 110 (H)
10,500
330 (W)
FUSSER ASSY Heat roller 100, 000 110 (D) 1.3
105 (H)
315 (W)
HOUSING ASSY- K:100,000*3
Development roller 75 (D) 0.7
DEVE Y/M/C:66,700*3
85 (H)
315 (W)
2ND BTR ASSY Transfer roller 100, 000 35 (D) 0.2
15 (H)

PRODUCT DESCRIPTION Consumables/Periodic replacement unit 38

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1.9.2 Conditions for Storage and Transport

† Temperature and humidity conditions

Condition Temperature (°C) Humidity*1 (%RH) Guarantee period

Normal 24 months
0 to 35 15 to 80
conditions (unopened)

Harsh High 35 to 40 High 80 to 95

Max. of 1 month
conditions Low -20 to 0 Low 5 to 15
Note *1: Non-condensing
Note : Storage time after opening is 12 months in the normal operating environment.
† Storage altitude
65 to 101 kPa (0 to 3, 100 m)
For air transport, 0 to 15, 000 m. However, this assumes that the cargo
compartment is maintained at 70.9275 kPa or higher.
† Package dropping
There should be no damage on 1 corner, 3 edges, and 6 sides of the packages under
the conditions below.

Table 1-29. Package dropping

Package name Drop
Toner Cartridge (1, 500 / 4, 000) 910 mm
Photoconductor Unit 910 mm
FUSSER ASSY 910 mm
HOUSING ASSY-DEVE 910 mm
2ND BTR ASSY 910 mm

PRODUCT DESCRIPTION Consumables/Periodic replacement unit 39

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1.10 External Appearance and Unit Names

1.10.1 Unit names

Table 1-30. List of unit names
No. Name No. Name No. Name No. Name
1 Cover B 8 MP tray 15 Cleaner cover 23 Cover DM (Duplex unit)
2 Control Panel 9 Toner Cartridge 16 Parallel interface connector 24 The screws for a duplex unit (2 place)
3 Lever for opening-and-closing shutter 10 Photoconductor Unit 17 GND screw 25 Cover H (500 sheet unit)
Release lever for the photoconductor
4 Cover A 11 18 Network interface connector 26 Release lever for the duplex unit
Unit
5 MP tray cover 12 Cover C 19 USB interface connector 27 500-Sheet Cassette
6 Option cover 13 Cover E 20 AC Inlet
Cover connector
7 Power switch 14 Cover F 22
(The connector for duplex unit)

12
1

11

14
10

2
15

3
13

6
Figure 1-9. Unit name_2
4
7

9 8 5

Figure 1-8. Unit name_1

PRODUCT DESCRIPTION External Appearance and Unit Names 40

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16 23

17

15

22 18
19

25
24

20

Figure 1-10. Unit name_3 Figure 1-12. Unit name_5

26
1

27

Figure 1-11. Unit name_4

PRODUCT DESCRIPTION External Appearance and Unit Names 41

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1.11 Engine Restrictions

FACTORS LIMITING PRINTING SPEED

† Image quality adjustment

Table 1-31. Iamge quality adjustment
Time required
Purpose Condition and control
(sec.)
1. When printing more than 51 copies (pages) continuously*1:
Every time the printer makes 50 copies (pages), it stops the job temporarily to
1 During Printing To keep the image density at target level. perform the ADC*2 control. 45
2. If the printer detect a near-end of Toner Cartridge, it changes the timing of the
ADC control to every 25 copies (pages).
When the printer comes into the following conditions, it stops the job temporarily at
the timing given for each condition to perform the ADC control.
• To prevent making a density difference between input
data and output image. 1. A/C*3 = 100% :
Admix*5 Every 4 copies (pages)
2 • To prevent toner from being stirred unequally. 15/Color
(Toner Cartridge -> Developer) 2. Average of 65%<_A/C < 100% :
• To supply toner when printing an image with high
Every 5 to 20 copies (pages)
print ratio.
3. Average of A/C < 65% :
Every 21 or more copies (pages)
Collection
To prevent excessive amount of toner in the black After printing in black and white continuously, the printer rotates the rotary if it
3 (Developer -> Toner Cartridge 12*4
developer when printing in black and white continuously. detects that the toner dispense time during the job is equivalent to 30 pages.
(collection space))

Note *1: Condition to print 50 copies (pages) continuously: l † Cooling down

The average of the print ratio should be 60% or less for each color. This is performed to prevent the edges of the heat roll from rising in temperature
*2: ADC = Automatic Density Control: when small-sized paper is used. If the temperature difference between the edges
A control to ensure stable print density and the center of the heat roll reach a certain level, the printer stops the current job
*3: A/C = Area coverage : to perform the cooling down operation.
Print ratio of each color • Av. : 60sec /Max. app.110sec
*4: 3 seconds × 4 colors
*5: The printer sometimes perform the ADC control more than once.
In such case, the time required will be "Time for once times Number of executions".

PRODUCT DESCRIPTION Engine Restrictions 42

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FACTORS LIMITING PRINTING START

Table 1-32. Factors limiting printing start

Time required
Purpose Condition and control
(sec)
When the number of printed copies (pages) becomes 20 (by both continuous or intermittent
1 Cycle Down To keep the image density at target level. printing) after performing the ADC, the printer performs another ADC when the current job is 45
finished.
1. The printer performs the ADC if the SENSOR HUM & TEMP detects that the
temperature and humidity in the printer are following conditions at power-on or when
returning from the low-power mode.
„ 20ºC/85% to 32ºC/42% or more
2 Cycle Up To correct the toner density 45*1
2. The SENSOR HUM & TEMP detects the temperature and humidity in the printer at
power-on. The detected condition is compared to the condition detected at the previous
power-off, and if the difference is as shown below, the printer performs the ADC.
„ Temperature : 4 degrees, Humidity : 10%RH
Parameter control according to the piece-to-piece variations The printer performs the ADC when replacing the Photoconductor unit with a new one or
3 Photoconductor Unit 74*2
of Photoconductor. used one.
The printer performs the ADC when replacing the Toner Cartridge with a new one. (Not 20 to 85
4 New Toner Cartridge Filling toner -> Recovering from an Empty error
performed when replacing with a used one.) sec/color
To prevent the color toner from concentrating to the left side 1. When the printer have finished five B/W print jobs in a row, it rotates the Augers of the
in the developer, which may cause partly (right side on the three developers (C, M and Y) switching the rotary position to let the color toner in the
paper) missed printouts, after printing in black and white developers spread evenly.
continuously. 2. When the printer is turned on for the first time after purchase, it does the same operation
Prevention of color (By the rotary rotation for the black and white printing as described above so that the toner spread evenly in the developers.
5 15 sec/color
toner concentration continuously, color toner, which is not currently used, is
moved along the spiral of the Auger (The Auger of the
developer for colors do not rotate during black and white
printing). With the color toner concentrated to the left side,
color printing may result in missing the right side image.)
Note *1: When the operation performed during the warm-up, the warm-up time becomes 74 seconds.
*2: The warm-up time is included.
(After the cover is opened and closed, the normal warm-up operation is executed.)

TONER DUTY LIMITING VALUE

240% (to prevent FUSER ASSY from twisting paper jam)

NOTE: If it exceeds 240%, the engine (Mechanical Controller) forces a hard

stop.

PRODUCT DESCRIPTION Engine Restrictions 43

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1.12 Notes When Replacing Consumables and

Installing Optional Products

1.12.1 Consumables
† Toner Cartridge
The power supply of the main unit should be on.
If the main unit is turned off, the cartridge that needs to be replaced does not move
to the cartridge replacement position.
† Photoconductor Unit
This unit can be replaced regardless of whether or not the main unit is turned on.

1.12.2 Optional Products

† 500-Sheet Cassette
Turn off the main unit before installing.
If the main unit is on when the cassette is installed, it is not detected.
† Duplex Unit
„ Turn off the main unit before installing.
If the main unit is on when the unit is installed, it is not detected.
„ Remove the following cover before installing. (keep the removed cover)
• Cover C
• Cover E
• Connector cover

† Adding Controller Option Parts

Turn off the main unit before installing. The part will be damaged if the power is
on.

PRODUCT DESCRIPTION Notes When Replacing Consumables and Installing Optional Products 44

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1.13 Life details † Color mode

Table 1-34. Color mode
† Monochrome mode
Catalog LIFE (unit: pages)
Table 1-33. Monochrome mode Area Printing
Unit specification Continuous
Coverage speed mode 4p/J 1p/J
LIFE (unit: pages) value printing
Catalog
Area Printing
Unit specification Continuous Standard 10,500 10,500 10,500
Coverage speed mode 4p/J 1p/J Color 5%
value printing
Continuation Low speed 7,900 7,500 6,400
Standard 42,000 39,400 20,900 10,500page Standard 10,500 10,500 10,300
5% Photoconductor
Monochrome 10%
Low speed 12,500 11,500 9,200 Unit*1 14,000page Low speed 7,800 7,400 6,300
Continuation
Photoconductor 42,000page Standard 42,000 38,500 20,500 2p/J Standard 5,300 5,300 5,300
10% 20%
Unit*1 14,000page Low speed 12,500 11,500 9,200 B:C=1:2
Low speed 5,300 5,300 5,300
2p/J
Standard 31,000 31,000 20,000 4,000 5% --- 4,000 4,000 4,000
B:C=1:2 20% Toner Cartridge
Low speed 12,400 11,500 9,100 1,500 5% --- 1,500 1,500 1,500
4,000 5% --- 4,000 4,000 4,000 100,000
Toner Cartridge FUSER ASSY*2 100,000 --- Standard 100,000 (TBD)
1,500 5% --- 1,500 1,500 1,500 (TBD)
100,000 HOUSING
FUSER ASSY*2 100,000 --- Standard 100,000 (TBD) ASSY-DEVE 100,000 --- --- 66,700 66,700 66,700
(TBD)
Y/M/C
HOUSING
100,000 --- --- 100,000 100,000 100,000 2ND BTR
ASSY-DEVE K 100,000 --- --- 100,000 100,000 100,000
ASSY
2ND BTR
100,000 --- --- 100,000 100,000 100,000 Note : B:Monochrome C:Color
ASSY
Note : B:Monochrome C:Color Note *1: 1. The life of a Photo Conductor unit may not reach the above numerical
value according to an operating condition.
Note *1: 1. The life of a Photoconductor Unit may not reach the above numerical
It becomes a life end by full of the waste toner. (Because waste toner box is
value according to an operating condition. included in a unit.)
It becomes a life end by full of the waste toner. (Because waste toner box is The following are main factors to decrease the life.
included in a unit.)
z When area coverage exceeds about 10%
The following are main factors to decrease the life. z When the power has been switched frequently
z When area coverage exceeds about 10% z Printing on special paper (Thick paper, Envelope, Transparencies)
z When the power has been switched frequently
2. The calculation for the life of Photoconductor is based on the following
z Printing on special paper (Thick paper, Envelope, Transparencies) conditions.
2. The calculation for the life of Photoconductor is based on the following z Power-source ON/OFF is not considered.
conditions.
z Calibration: 1 time /20pages
z Power-source ON/OFF is not considered. z Jam recovery operation at the time of Jam is included.
z Calibration: 1 time /20pages
z Jam recovery operation at the time of Jam is included. *2: The life may become below half if the user print on envelopes or thick paper
frequently.
*2: The life may become below half if the user print on envelopes or thick paper
(Excessive pressure is applied to a heat roll and wrinkles papers on the roll.)
frequently.
(Excessive pressure is applied to a heat roll and wrinkles papers on the roll.)

PRODUCT DESCRIPTION Life details 45

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1.14 Controller Specifications † Printer mode

„ Standard : ESC/PageS Printing System (ESC/PageS03)
1.14.1 Controller Basic Specifications „ Other : EJL mode
RCC mode
† CPU : VR4305 (66.7 MHz) DCC mode
† Enhanced technology : CPGI, CRIT, RITech (the ASIC uses HTC) EpsonNet Config (Web)
† RAM : SDRAM „ Auxiliary software : Status sheet
Maintenance mode (engine status sheet)
„ Standard : 32 MB (mounted on the code ROM DIMM side) Update function for mechanical controller firmware
„ Expansion : 16 MB, 32 MB, 64 MB, 128 MB, 256 MB (EFU)
(90pin DIMM) † Installation method : Fixed to the main body
1 slot, maximum 256 MB

C A U T IO N Even if 256 MB memory is installed, available size is not become

288 MB because of restriction of ASIC. 1.14.2 Controller Configuration
The printer can be set with the following configurations according to destination.

Table 1-35. Pattern jumper (INPT0)

† Program ROM : 4 MB Flash (DIMM)
R190
† Panel : LCD 20 digits, 1 line; 3 LEDs; 6 switches Open 1 Default for tray paper size: A4
† Interface Short 0 Default for tray paper size: LT
„ Standard
• Parallel : 1 ch (IEEE1284 compliant bi-directional B-type
connector, Compatibility, Nibble, ECP)
• USB : 1 ch (Rev.2.0 HS) (D4 Level 3 supported)
• Network interface board : 1 slot

C H E C K There are 2 models, either Network interface board is installed or

P O IN T not installed.
However, attaching the board to the “not installed model” is
possible.

PRODUCT DESCRIPTION Controller Specifications 46

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1.14.3 External Interface Specifications USB INTERFACE SPECIFICATIONS

The printer provides the following host interfaces.
Universal Serial Bus Specification Rev.2.0 HS is supported.
† Parallel (IEEE1284 compliant) interface: Standard
USB model specific number: 31
† USB (Rev.2.0 HS) interface : Standard
When the printer is connected to the PC by the USB port, the interface does not support
† Network interface : Standard or Option D4. The D4 protocol become valid only when the EPSON external LAN option is
connected. The device ID CMD differs from the parallel interface, with D4L3 added.
The locations of the respective interfaces are shown below. CMD: EJL, ESCPAGES-03; D4L3;

NETWORK INTERFACE SPECIFICATIONS

† Printing protocol
„ TCP/IP
LPR, FTP, IPP, PORT2501, PORT9100
Parallel interface
(IEEE1284 B-type) „ Microsoft Network
SMB
„ AppleTalk
Network interface (option)
† Management protocol
„ TCP/IP
USB interface SNMP, ENPC, HTTP, TELNET, DHCP, BOOTP, PING, DDNS, mDNS*1,
SNTP
„ Microsoft Network
Auto-IP, SSDP
Figure 1-13. Location of external interfaces „ MS Network (NetBEUI)
SNMP, ENPC
PARALLEL INTERFACE SPECIFICATIONS „ AppleTalk
SNMP, ENPC
The Device ID for this printer is as shown below. Note *1: mDNS is used with Rendezvous

MFG EPSON; † Entity Type

CMD : EJL, ESCPAGES-03; EPSONPAGES3
MDL : AL-C1100;
CLS : PRINTER;
DES : EPSON AL-C1100;

PRODUCT DESCRIPTION Controller Specifications 47

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1.15 Control Panel LCD

1 line x 20 characters Ready LED (Green) Error LED (Red)
Data LED (Yellow) “ (2)” button
1.15.1 External Appearance and Names
Table 1-36. Indicators 2

Indicators Function 1 3

LCD 1 line x 20 characters (5 x 7 dot matrix)

4
On : Printer is ready to print.
Ready LED
Off : Printer is not ready to print.
On : Printer contains data that has not been processed yet. “ (1)” button “ (3)” button
Data LED Off : Printer has finished processing all print data. Cancel Job button
“ (4)” button Start/Stop button
Flashing : Printer is currently processing data.
Flashing 1: An error has occurred which permits continuing to print by pressing the Start/ Figure 1-14. External View of Control Panel
Stop button.
Error LED On : An error has occurred which requires the user to remove the cause of the error.
Flashing 2: An error has occurred which requires the user to clear the error and press the
Start/Stop button.

Table 1-37. Summary of Button Functions

Button
When Ready to Print When Not Ready to Print Error Has Occurred In Panel Setting Mode
Name
1. Pressing normally: 1. Recoverable error:
Start Into pause (not ready to print) Into On Line (ready to print) status Clears error Returns to normal mode
/Stop status 2. Pressing for 2 seconds or longer: 2. Non-recoverable error: (the same state as before entering panel setting mode)
Ejects paper forcibly Displays “Unable Clear Error”
1. Pressing normally: 1. Pressing normally: 1. Pressing normally:
Deletes printing data Deletes printing data Deletes printing data
Cancel Job Invalid
2. Pressing for 2 seconds or longer: 2. Pressing for 2 seconds or longer: 2. Pressing for 2 seconds or longer:
Deletes all printing data Deletes all printing data Deletes all printing data
1. When panel setting mode menu is displayed: Displays setting item
Enters the printer information menu Enters the printer information menu 2. When setting item for non-execution is displayed: Displays setting value
(3) Invalid
in the panel setting mode in the panel setting mode 3. When setting item for execution is displayed: Executes printing or processing
4. When setting value is displayed: Registers the setting value
Enters the printer information menu Enters the printer information menu 1. When panel setting mode menu is displayed: Returns to normal mode
(1) Invalid
in the panel setting mode in the panel setting mode 2. When setting item or setting value is displayed: Displays the previous higher rank in hierarchy
1. When panel setting mode menu is displayed: Displays the previous panel setting mode menu
Enters the printer information menu Enters the printer information menu
(2) Invalid 2. When setting item is displayed: Displays previous setting item
in the panel setting mode in the panel setting mode
3. When setting value is displayed: Displays previous setting value
1. When panel setting mode menu is displayed: Displays the next panel setting mode menu
Enters the printer information menu Enters the printer information menu
(4) Invalid 2. When setting item is displayed: Displays next setting item
in the panel setting mode in the panel setting mode
3. When setting value is displayed: Displays next setting value

PRODUCT DESCRIPTION Control Panel 48

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1.15.2 Panel Settings List Tray Menu

The printer settings are listed below.
Setting Setting values Status sheet
Underlined value in the Setting value column are factory default settings. A4, A5, B5, LT, HLT, GLT, EXE, MON, C10,
MP Tray Size*1 {
DL, C5, C6, IB5
Information Menu LC Size*2*3 A4, LT, {
Plain, SemiThk, Letterhead, Recycled, Color,
Setting Setting values Status sheet MP Type*2*3 {
Trnsprncy, Labels
Status Sheet --- --- LC Type*2 Plain, SemiThk, Letterhead, Recycled, Color {
Network Status Sheet*1 --- --- Note *1: The default value depends on the controller configuration settings.
USB Extl/FstatusSht*2 --- --- (For details, refer to “Controller Configuration” (p.46).)

C Toner*3 E F to E******F { *2: Selectable when the lower feed unit is installed.

M Toner*3 E F to E******F { *3: Always A4 by default, irrespective of the controller configuration.

Y Toner*3 E F to E******F {
K Toner*3 E F to E******F {
Photocondctr*3 E F to E******F {
Printing Menu

Total Pages*3 0 to 99999999 {

Setting Setting values Status sheet
Color Pages*3 0 to 99999999 {
A4, A5, B5, LT, HLT, GLT, EXE, MON, C10,
Page Size*1*2*3 ---
B/W Pages*3 0 to 99999999 { DL, C5, C6, IB5
Note *1: Only displayed when the network interface board is installed, and “Network Menu” - Orientation*1 Port, Land ---
“Network I/F=On”. Resolution*1 300, 600 ---
*2: Only displayed when a D4-compliant USB external device is connected, and “USB RITech*1 On, Off ---
Menu” - “USB I/F=On”.
Toner Save*1 On, Off ---
*3: This item is for display only and cannot be modified.
Page Scale Off, 80% ---

Status Menu Image Correct*1 1, 2 ---

Top Offset*1 -30.0 to 0.0 to 30.0mm ---
This menu is displayed only when a warning occurs. LeftOffset*1 -30.0 to 0.0 to 30.0mm ---
T Offset B*1 -30.0 to 0.0 to 30.0mm ---
L Offset B*1 -30.0 to 0.0 to 30.0mm ---
Note *1: This item exists as the parameter, but not displayed on the panel.
*2: Paper size specified by ESCPAGE-S03 command is not differ among the each
destination, both size are available.
*3: The default value depends on the controller configuration settings.

PRODUCT DESCRIPTION Control Panel 49

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 EPSON AcuLaser C1100 Revision B

Setup Menu Reset Menu

Setting Setting values Status sheet Setting Setting values

Lang English Clear Warning ---
Lang Francais
Clear All Warnings ---
Sprache Deutsch
Reset ---
LINGUA ITALIANO
LENG ESPANOL Reset All ---
{
SPRAK SVENSKA SelecType Init ---
Sprog Dansk Change Toner C ---
Taal Nederl.
Change Toner M ---
KIELI SUOMI
Ling. Portugues Change Toner Y ---
TimeToSleep Change Toner K ---
1 to 1440 {
(not indicated) Reset Fuser Counter ---
Time Out*1 0, 5 to 60 to 600 ---
Paper Source*1 Auto, MP Tray, LC1 ---
MP mode Normal, Last { PARALLEL MENU
Manual Feed*1*2 Off, 1st Page, EachPage ---
Copies*1 1 - 999 --- Setting Value Status sheet
Quantity*1 1 - 999 --- Parallel I/F*1 On, Off {
Duplex*1 On, Off --- Speed*2 Fast, Normal ---
Binding*1 Long Edge, Short Edge --- Bi-D*1 Nibble, ECP {
Normal, SemiThk, Thick, ExtraThk, Trnsprnc,
Paper Type*1 --- Buffer Size*2 Normal, Maximum, Minimum ---
Coated
Note *1: After this item is changed, the setting value takes effect after a warm boot or after the
Page Side*1 Front, Back ---
power is turned on again.
Skip Blank Page*1 On, Off --- While it is reflected in the Status Sheet and EJL read-back, the actual change takes
Auto Eject Page*1 On, Off --- effect after a warm boot or after the power is turned on again.
Size Ignore On, Off { *2: This item exists as the parameter, but not displayed on the panel.
Auto Cont On, Off {
Page Protec*1 On, Off ---
LCD Contrast 0 to 7 to 15 (step 1) {
Panel Lock*1*2 On, Off ---
Note *1: This item exists as the parameter, but not displayed on the panel.
*2: Able to set with EJL, MIB

PRODUCT DESCRIPTION Control Panel 50

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 EPSON AcuLaser C1100 Revision B

USB Menu Network Menu

Setting Value Status sheet Setting Value Status sheet

USB I/F*1 On, Off { Network I/F*1 On, Off {
USB SPEED*1 HS, FS { Network Config*2 No, Yes ---
USB ExtI/Fconfg*2 No, Yes --- Get IPAddress*3*4*7 Panel, Auto, PING {

Get IPAddress*3 Panel, Auto, PING --- IP*3*5 0.0.0.0 to 192.168.192.168 to 255.255.255.255 {

IP*3*4*5 0.0.0.0 to 255.255.255.255 --- SM*3 0.0.0.0 to 255.255.255.0 to 255.255.255.255 {

SM*3 0.0.0.0 to 255.255.255.255 --- GW*3 0.0.0.0 to 255.255.255.255 {

GW*3 0.0.0.0 to 255.255.255.255 --- AppleTalk*3 On, Off {

MS Network*3 On, Off {
NetWare*3 On, Off ---
Rendezvous*3*4 On, Off {
AppleTalk*3 On, Off ---
Link Speed*3 Auto, 100 Full, 100 Half, 10 Full, 10 Half {
MS Network*3 On, Off ---
Buffer Size*6 Normal, Maximum, Minimum ---
Rendezvous*3 On, Off ---
Note *1: Displayed when a network interface board is installed.
USB Ext I/F Init*3 --- --- After this item is changed, the setting value takes effect after a warm boot or after the
Buffer Size*6 Normal, Maximum, Minimum --- power is turned on again.
While it is reflected in the Status Sheet and EJL read-back, the actual change takes
Note *1: After this item is changed, the setting value takes effect after a warm boot or after the
effect after a warm boot or after the power is turned on again.
power is turned on again.
While it is reflected in the Status Sheet and EJL read-back, the actual change takes *2: Displayed only when a network interface board is installed. Changed to “Network
effect after a warm boot or after the power is turned on again. Config=No” automatically when the panel setting mode is finished.
*3: Displayed only when a network interface board is installed, and “Network
*2: Displayed only when the D4 support USB external device is connected. Changed to
Config=Yes”.
“USB Config=No” automatically when the panel setting mode is finished.
*4: The default value depends on the controller configuration settings.
*3: Displayed only when the D4 support USB external device is connected, and “USB
*5: The actual valid value is displayed (but cannot be changed) when “Get IPAddress =
external device=Yes”.
Auto”.
Content of the setting depends on the USB external device settings.
*6: This item exists as the parameter, but not displayed on the panel.
*4: The actual valid value is displayed (but cannot be changed) when “Get IPAddress =
*7: When “Panel” or “PING” is changed to “Auto” in the IP adress setting, the printer
Auto”.
stores the previous setting value, which had been set in the “Panel” or “PING”. The
*5: When “Panel” or “PING” is changed to “Auto” in the IP adress setting, the printer stored value will be displayed when returning to “Panel” or “PING”.
stores the previous setting value, which had been set in the “Panel” or “PING”. The The printer displays “192.168.192.168” if the settings are not made from the panel.
stored value will be displayed when returning to “Panel” or “PING”.
The printer displays “192.168.192.168” if the settings are not made from the panel.
*6: This item exists as the parameter, but not displayed on the panel.

PRODUCT DESCRIPTION Control Panel 51

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 EPSON AcuLaser C1100 Revision B

PRINTER ADJUST MENU Maintenance Menu

Setting Value
C A U T IO N Before using this function, refer to the instructions given in “1.15.3
Normal*1 0 ~ 5 ~ 15
Explanation of Menu and Settings” (p.54).
SemiThk*1 0 ~ 5 ~ 15
Thick*1 0 ~ 5 ~ 15
ExtraThk*1 0 ~ 5 ~ 15
Card*1 0 ~ 5 ~ 15 Setting Value
Envelope*1 0 ~ 5 ~ 15 Engine Status Sheet*1*2 ---
Feed Offset*2 -3.5 to 0.0 to 3.5 mm Print Log Report*1*2 ---
Scan Offset*2 -3.5 to 0.0 to 3.5 mm Reset 2ndBTRCounter*1*3 ---
Feed Offset2*2 -3.5 to 0.0 to 3.5 mm Reset C DvlpCounter*1*3 ---
Scan Offset2*2 -3.5 to 0.0 to 3.5 mm
Reset M DvlpCounter*1*3 ---
Calibration*3
Reset Y DvlpCounter*1*3 ---
Note *1: Displayed only when the Support Mode has been selected by a special operation
when the power is turned on. Reset K DvlpCounter*1*3 ---
After changing the settings in the Printer Adjust Menu and pressing the Enter button, Reset Fuser Counter*1*3 ---
the printer reboots.
Clear Error Log*1 ---
*2: Displayed only when the Support Mode has been selected by a special operation
when the power is turned on. MCU DATA BackUp*1*2 ---
After changing the settings in the Printer Adjust Menu and returning to the menu, the MCU DATA Restore*1*3 ---
printer reboots.
Note *1: Displayed only when the Maintenance Mode has been selected by a special
*3: After finished calibrating, the printer directly goes back to the normal operating operation when the power is turned on.
mode.
*2: Pressing the Enter button leaves the panel settings.

C H E C K „ Secondary transfer voltage adjust value, from plain paper to *3: Pressing the Enter button reboots.
P O IN T envelop, becomes same value between front side and reverse
side.
„ When printing both sides, offset value for reverse side is
displayed regardless of Duplex unit is installed or not.

PRODUCT DESCRIPTION Control Panel 52

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 EPSON AcuLaser C1100 Revision B

USER SETTING ITEMS OTHER THAN IN THE SETTING MENU

The following is a list of user settings not included in the Setup menu.
Initialization by the Initialization menu of the Panel does not clear these items.

Item Setting value Default Setting Method

32-byte character EJL,
PrinterName AL-C1100
string PrinterName command
32-byte character
MFG in the Device ID (Undefined) EJL
string
32-byte character
MDL in the Device ID (Undefined) EJL
string
32-byte character
DES in the Device ID (Undefined) EJL
string
32-byte character
CID in the Device ID (Undefined) EJL
string

PRODUCT DESCRIPTION Control Panel 53

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 EPSON AcuLaser C1100 Revision B

1.15.3 Explanation of Menu and Settings Maintenance Menu

The following are items specific to this printer. † MCU DATA BackUp*1
Backup the data of the engine. "MCU Data BackUp" is displayed until back up
Reset menu processing ends.

† Change Toner C/Change Toner M/Change Toner Y/Change Toner K † MCU DATA Restore*1
Used when replacing a Toner Cartridge before toner end occurs. Restore the data of the engine to the mechanical controller. "MCU DATA
When executed, “Please Wait” is displayed, and when the specified toner reaches Restore" is displayed until restore processing ends.
the replacement position, “Replace Toner x” is displayed and the printer stands by.
NOTE *1: Execution of the mechanical controller backup/restore is not possible in the
If the cartridge is not actually replaced, the operation finishes when cover A is
following states:
closed.
• During a power save
† Reset Fuser Counter • During warming-up
Reset the counter of the fuser assy consumption and count up the exchange • During printing
counter. • During printer adjustments
When resetting the counter, the number of printed pages for the Fuser Assy is The power must not be turned OFF during the backup process until the
stored on the EEPROM. The stored value will be printed on the Engine Status engine has stopped.
Sheet as the number of previous replacement.
This is same for the Reset Fuser Counter of maintenance menu.
† Print Log Report
Prints a log of printing status.
Printer Adjust Menu † Reset 2ndBTRCounter
Reset the counter of the 2nd BTR assy consumption and count up the exchange
† Calibration counter. After executing the counter reset, open and close the A cover. Do not turn
Execute the process control. Since the process control is a cycle down process the printer off until the engine stops completely.
control, it is conducted when printing is finished.
† Reset C/M/Y/K DvlpCounter
Reset the counter of the developer unit (HOUSING ASSY-DEVE) consumption
and count up the exchange counter. After executing the counter reset, open and
close the A cover. Do not turn the printer off until the engine stops completely.

PRODUCT DESCRIPTION Control Panel 54

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 EPSON AcuLaser C1100 Revision B

1.15.4 Special Operations † Maintenance Mode

After the printer enters the Maintenance mode, engine process control (Calibrating
LIST OF OPERATING FUNCTIONS Printer) is performed after printing since the process control is a cycle process
control.
The following is a list of the special operating functions supported by this printer.
Do not make these functions (except Support mode and panel setting value
initialization) available to users.

Table 1-38. List of Operating Functions

Function Operating procedure
Support Mode Turn on the power while pressing the Down button.
Turn on the power while pressing Start/Stop + Cancel Job
Initialization of EEPROM
+ Back. (Also performs RAM Check of all sectors)
Initialization of panel settings Turn on the power while pressing the Cancel Job button.
Turn on the power while pressing Start/Stop + Cancel Job
Program ROM update
+ Down.
Turn on the power while pressing Back + Up + Down +
Maintenance mode
Enter.
Turn on the power while pressing Start/Stop + Cancel Job
Engine program update
+ Up + Down.
Turn on the power while pressing Start/Stop + Back + Up
RAM check of all sectors
+ Enter.
CPU reset when a Service Call Press Cancel Job + Back + Up + Down + Enter when a
occurs service call error occurs.
Display detailed information when Press Cancel Job + Back + Enter when a service call error
a Service Call occurs occurs.

SPECIAL FUNCTIONS

The following are items specific to this printer.

† EEPROM initialization
Since the used amounts of each toner, the Photoconductor Unit, and HOUSING
ASSY-DEVE (developer) are recorded by the engine, they are not cleared by
initializing EEPROM.

PRODUCT DESCRIPTION Control Panel 55

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 EPSON AcuLaser C1100 Revision B

1.16 Printer Status Table 1-39. List of Printer Messages

Error LED
Display Sort Status code
status
1.16.1 List of Printer Messages Wrong Photocondctr Error On 4237*5
The following is a list of messages displayed by the printer. Photocondctr Trouble Error On 4238*5
Table 1-39. List of Printer Messages Replace Toner uuuu Error On 4236*5
Error LED Replace Photocondctr Error Flashing 2 4236*5
Display Sort Status code
status Replace Photocondctr Error On 4236*5
(Displays when turn on the power) Status --- --- w w w w Open Error On 4239*5
Flashing (All Please Wait Status --- 1019
Service call
Service Req Cffff LEDs flash 6000
error Manual Duplex Error Flashing 2 1020
simultaneously)
Manual Feed ssss Error Flashing 2 1013
Flashing (All
Service call Can’t Print Duplex Error Flashing 1 3005
Service Req Eggg LEDs flash 6001~6999
error
simultaneously) Paper Out tttt sssss Error On 4010
Optional RAM Error Error --- --- Paper Set tttt sssss Error Flashing 1 3003
ROM CHECK Status --- --- Print Overrun Error Flashing 1 3000
RAM CHECK Status --- --- Mem Overflow Error Flashing 1 3001
Self Test Status --- --- Duplex Mem Overflow Error Flashing 1 3004
Reset All Status --- 1004 Invalid Data Error Flashing 1 3007
Reset Status --- 1004 Invalid N/W Module Error On 4240
Cancel All Print Job*2 Status --- 1003 Write Error ROM P Error On 4006
Cancel Print Job*2 Status --- 1003 Reset to Save (Status) --- ---
Unable Clear Error Status --- --- Writing ROM P Status --- 1005
Check Transparency Error On 4021 Menus Locked Warning --- ---
Jam W W W W W*1 Error On 4234*4 (Selectype mode) --- --- 1001
Irregular Density Error On 4031 Can’t Print Warning --- 2072
Remove Photocondctr Error On 4257 Check Paper Size Warning --- 2004
Install uuuu TnrCart Error On 4235*5 Image Optimum Warning --- 2002
Wrong Toner uuuu Error On 4237*5 Check Paper Type Warning --- 2008
NonGenuineToner uuuu Error Flashing 2 4241 to 4255 Color Unmatched Warning --- 2567
TonerCart Error uuuu Error On 4238*5 Form Feed Status --- 1008
Install Photocondctr Error On 4235*5 (printing) Status 1009

PRODUCT DESCRIPTION Printer Status 56

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 EPSON AcuLaser C1100 Revision B

Table 1-39. List of Printer Messages 1.16.2 Status Messages and Troubleshooting
Error LED
Display Sort Status code The following are items specific to this printer.
status
(Job processing) Status 1002
Please Wait
(communication to non active I/F port) Status 1012
(test printing) --- --- 1010 † Explanation
When replace toner is specified from the panel operation or with a command, this
Warming Up Status --- 1006
message is displayed while the cartridge moves to the replacement position.
Calibrating Printer Status --- 1014 Once it moves to the required position, the message changes to “Replace Toner
Offline*8 Status --- 1001 X”.
Cancel Print Job*3 Status --- 1003
uuuu Toner Low Warning --- 2571*6 Calibrating Printer
Worn Photoconductor Warning --- 2571*6 † Explanation
Worn Fuser Warning --- 2571*6 Indicates that printer (engine) is in the following conditions:
Worn uuuu Dev Unit Warning --- 2571*6 • The process control is in execution.
NonGenuine Toner Warning --- 2571*6 • Engine is writing the data to the CRUM.
Sleep*8 Status --- 1007 With this printer, this is performed automatically at the following timing.
Ready*8 Status --- 1000 • When has printed 50 copies (pages) continuously (By stopping the print job
Note *1: W W W W W=C, D, E, F, G, DM, MP, LC temporarily)
• When has printed 20 copies (pages) intermittently (After finished a current print
*2: Cancel Print Job and Cancel All Print Job using the operation panel.
job)
*3: Cancel Print Job using the host. • When has printed text or images with high print ratio
*4: For detailed information on responding to composite errors, refer to the print status • When has printed in black and white continuously
area. • When detected that the Fuser Assy is cold at power-on
*5: For detailed information on responding to composite errors, refer to the print status • When Toner Cartridge is replaced after the printer detects the “toner end” status.
area. • When Photoconductor Unit is replaced with a new one
*6: For detailed information on responding to consumable warning status, refer to the
relevant area.
*7: w w w w=A, B, C, D, DM, E, F, G
*8: Toner remaining is added.
Displays the remaining toner, right aligned, in the order of K, C, M, Y in seven
increments.

PRODUCT DESCRIPTION Printer Status 57

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 EPSON AcuLaser C1100 Revision B

1.16.3 Error Messages and Troubleshooting Irregular Density

The following are items specific to this printer. † Explanation
This error occurs when the image density of all 4 colors at the top of page
exceeding the upper limit (240%). At this time, engine stops, and picked up paper
Check Transparency is remained in the printer.
† Explanation † Remedy
A paper jam has occurred because media other than transparencies was fed when „ Turn off the printer and remove the paper remained in the printer.
transparency is specified, or transparency was fed when other than that is
specified. „ Reduce the image density of all 4 colors from the application software.
† Remedy NOTE: It is occurred when total (C, M, Y, K) print data density is higher than
Remove the media from the MP Tray or LC cassette. Open and close cover E. 240%.
Load the correct media to start printing again from where the jam occurred.

Jam W W W W W (W W W W W=C, D, E, F, G, DM, MP, LC) Install uuuu TnrCart

† Explanation † Explanation
A paper jam has occurred. One or more Toner Cartridges are not installed.
Note that this message represents both one cartridge and several cartridges.
† Remedy
Remove the jammed paper and when the cover is closed, printing resumes from † Remedy
the jammed page. Open Cover A and install the Toner Cartridge in the replacement position.
The printer recovers from the error when the cover is closed.
B Cover C Cover E Cover When several cartridges are not installed next cartridges is set to replacement
D Cover
F Cover position after cover A is closed.

NOTE: When there are more than one uninstalled cartridges, the message for the
next one is displayed when it is set at the replacement position after
closing the cover A.
DM Cover
(The user opens the cover again by seeing the message.)

A Cover
Wrong Toner uuuu
G Cover
Cassette LC † Explanation
MP tray (MP) A non-EPSON specification Toner Cartridge is installed.
† Remedy
NOTE: Covers A and B cannot be used for resolving jams (A, B are for replacing Open Cover A, install the right Toner Cartridge.
consumables)

PRODUCT DESCRIPTION Printer Status 58

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 EPSON AcuLaser C1100 Revision B

NonGenuineToner uuuu w w w w Open (w w w w=A, B, C, D, DM, E, F, G)

† Explanation † Explanation
A non-genuine Toner Cartridge is installed. The indicated cover is open.
† Remedy † Remedy
„ Open cover A, install the right Toner Cartridge. The printer recovers from the error by closing the cover.
The printer recovers from the error when the cover is closed.
NOTE: When multiple covers are open, they are displayed as much as possible in
„ Press the Start/Stop button. the following order.
The message will change to “Non Genuine Toner” and enables the user to
print. A, B, C, D, DM, G

TonerCart Error uuuu Manual Duplex

† Explanation † Explanation
The Toner Cartridge CSIC cannot be read/written correctly. Printing is stopped, because the print of one side is finished in manual duplex
† Remedy printing.
Open cover A, reinstall the Toner Cartridge, or replace it with a correct Toner When manual duplex printing is specified, the errors below are not occurred.
Cartridge. „ Paper Set
The printer recovers from the error when the cover is closed.
„ Check Paper Size
Replace Toner uuuu
† Remedy
† Explanation „ Set the one-side printed sheet into MP tray and press the Start/Stop button to
The Toner Cartridge comes to the end of its life. print on the other side.
† Remedy „ Cancel the job if there is no need to print on the other side.
Open cover A and install the Toner Cartridge in the replacement position.
The printer recovers from the error when the cover is closed. NOTE: With manual duplex printing, back pages (even-numbered pages) are
When several cartridges come to the end, next cartridge is set to replacement
printed first in descending order and piled up face down.
position after cover A is closed.
To print the front pages (odd numbered pages), put the face-down piled-
NOTE: When several cartridges come to the end all at once, the order of the up sheets directly into the MP tray as the front pages are printed in
replacement is K, Y, M, C. When finished to replace the first one and ascending order.
close the cover A, “Install uuuu TnrCart” is displayed after next Second pass of Manual Duplex is engine setting for reverse side.
cartridge is set at the replacement position. This setting should be conducted before display of Manual Duplex.
(The user opens the cover again by seeing the message.)

PRODUCT DESCRIPTION Printer Status 59

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 EPSON AcuLaser C1100 Revision B

Manual Feed ssss Print Overrun

† Explanation † Explanation
Manual feed mode is specified for the current print job. While printing with a flying start, the data does not arrive in time.
During printing in the manual feed mode, the paper ran out.
† Remedy
† Remedy
„ Press the Start/Stop button, the error is canceled, and the page is reprinted
„ Press the Start/Stop button. Printing starts feeding paper from the higher without flying start.
priority feeder.
„ When “Auto Continue=On”, the page is reprinted without flying-start after a
„ Cancel the job if there is no need to continue. certain interval.
„ Cancel the job if there is no need to continue.
Can't Print Duplex
NOTE: If this error occurs frequently, set flying-start setting to Off on the printer
† Explanation driver. (Avoid Page Error = On)
The print job is not available for duplex printing. When “Mem Overflow” error occurs after recovering from the error, the
With this printer, duplex printing is possible when the following conditions are all printer skips the error page and prints the next page.
met. In case of a receive time out (after recovering from the error), the printer
„ Page Size is any of A4, B5, LGL, LT, EXE ejects a blank paper without indicating an error or warning.
„ Paper type is plain paper, semi-thick paper, coated paper
Invalid Data
† Remedy
† Explanation
„ Press the Start/Stop button, the error is released, and simplex printing starts. A spool file in the driver is deleted while the printing is in progress. And then the
„ When “Auto Continue=On”, simplex printing starts after a certain interval. driver starts to process another job.
This error also occurs when the printer receives an abnormal data due to a
„ Cancel the job if there is no need to continue. communication error.
When this error occurs, the job data which caused the error has been deleted.
There is a possibility that the next job data is recognized as a part of the previous
job data where the error occurs. In such case, first page is deleted.
† Remedy
„ Press the Start/Stop button, the error is released.
„ When “Auto Continue=On”, the error is released after a certain interval.
„ Cancel the job if there is no need to continue.

PRODUCT DESCRIPTION Printer Status 60

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 EPSON AcuLaser C1100 Revision B

Invalid N/W Module Remove Photocondctr

† Explanation † Explanation
The network program does not exist, or a network program that is not for this This occurs when Photoconductor Unit is installed before all the Toner Cartridges
printer is written. are installed when setting up the printer.
The interfaces maintain the status before the error. This error is provided to make sure that the covers (packing materials) of
HOUSING ASSY-DEVEs are removed. If the photoconductor is installed and the
Replace Photocondctr HOUSING ASSY-DEVEs rotate with the covers attached, both of them could
result in malfunction. Since the Toner Cartridges cannot be installed unless the
† Explanation covers removed, the printer indicates the error when the Photoconductor is
Photoconductor Unit has reached the end of its service life installed before attaching the four Toner Cartridges.
† Remedy † Remedy
Same message is displayed, but error LED flash 2 different ways either on or Open the cover B, take out the Photoconductor Unit, and close the cover B.
flashes.
1. When error LED is on
• Replace the Photoconductor Unit with a new one. The printer recovers from the
error when the cover B is closed.
2. When error LED flashes
• Replace the Photoconductor Unit with a new one. The printer recovers from the
error when the cover B is closed.
• Although the printer recovers from the error by pressing the Start/Stop button, the
print quality is not guaranteed from then.

NOTE: Error removing spec is as below.

• When Start/Stop button is pressed, the message changes to “Worn

Photoconductor”. Printing is possible until the error LED is on indicating
“Replace Photocondctr”.
• However, the printer repeatedly indicates the “Replace Photocondctr” with the
LED flashing every time it receives a print job after the power back on,
cancelling a job, or resetting.
• After the “Replace Photocondctr” with the LED flashing, the remaining amount
of toner is indicated as 0%.

PRODUCT DESCRIPTION Printer Status 61

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 EPSON AcuLaser C1100 Revision B

1.16.4 Warning Messages and Troubleshooting Worn uuuu Dev Unit

The following are items specific to this printer. † Explanation
The HOUSING ASSY-DEVE of each color (C, M, Y, K) reaches the almost end
Worn Fuser of its life (the rest of the life is about 1000 pages) It is still able to use, however, it
is recommended to replace it with a new one.
† Explanation
The FUSER ASSY comes to near end of its life.
Worn Photoconductor
The print quality is not guaranteed from now on.
† Remedy † Explanation
1. Turn off the power and replace the fuser unit with a new one. The Photoconductor Unit reaches the almost end of its life (about 95% used). It is
2. Turn the printer on in maintenance menu (or reset menu), and clear the lifetime calculated by engine. After recovering from the error, “Replace Photocondctr”
counter of the FUSER ASSY. error (LED flashes) will be displayed.

NOTE: Although continuing to use the FUSER ASSY is possible for a while, it is
recommended to replace the assy with a new one when this warning is
indicated. After the warning jamming at the assy may occur frequently
because the roller does not rotate smoothly due to wear of its bearings.

NonGenuine Toner

† Explanation
A non-genuine toner cartridge is installed.
† Remedy
The warning message is released by one of the following methods.
„ Replacing with genuine toner cartridge.
„ Executing Clear All Warnings*.
„ Executing Reset in the Reset menu*.
Note *: Even if the warning is once cleared by the above operation, the same warning will be
displayed agein as long as the same toner cartridge remains unchanged in the printer.

PRODUCT DESCRIPTION Printer Status 62

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1.16.5 Service Call Error Messages CONTROLLER-RELATED SERVICE CALL ERRORS

This section shows the service call error message of this printer. (For details, refer to Table 1-41. List of Service Call Errors (Controller Related)
Chapter3 “TROUBLESHOOTING”.)
Internal error code Explanation

ENGINE-RELATED SERVICE CALL ERRORS 0017 CPU error (undefined interruption)

0081 CPU error (TLB modification exception)
Table 1-40. List of Service Call Errors (Engine Related) 0082 CPU error (TLB miss exception [Load/Fetch])
Error code Explanation 0083 CPU error (TLB miss exception [Store])
E 510 ROS Motor Failure 0084 CPU error (address error exception [Load/Fetch])
E 511 TR0 Failure 0085 CPU error (address error exception [Store])
0086 CPU error (bus error exception [Fetch])
E 513 NVRAM Error
0087 CPU error (bus error exception [Load/Store])
E 514 PAGE Timeout
0088 CPU error (SYSCALL exception)
E 516 Communication Error Duplex
0089 CPU error (Break exception)
E 517 Communication Error Feeder
0090 CPU error (reserving command exception)
E 520 BTR 2 Advance Error
0091 CPU error (unused coprocessor exception)
E 521 BTR 2 Error 0092 CPU error (FPU exception)
E 523 PCDC Error 0093 CPU error (TLB exception)
E 524 Low Density 0094 CPU error (XTLB exception)
E 525 High Density 0095 CPU error (cache exception)
E 526 ADC Contamination 0096 CPU error (Trap exception)
E 527 Deve Home Position Sensor Error 0097 CPU error (FPU exception)
E 530 Humidity Sensor Error 0098 CPU error (watch exception)
E 533 Temp Sensor Error 0128 ~ 0254 CPU error (undefined trap)
E 537 Fuser Fail 0255 CPU error (NMI exception)
0256 CPU error (divide by 0)
E 542 IBT CLN Fail
0257 CPU error (arithmetic overflow)
E 546 Duplex Motor Failure
0258 CPU error (break occurrence)
E 547 Deed Motor Failure
0800 IPL error (controller defect)
E 998 Engine Communication Error
0998 Engine communication error (only at power-on)
0999 Engine flash ROM has no program data
1002 Standard RAM error (standard size is undefined, etc.)
1010 Verification error
1020 RAM error (slot 0)

PRODUCT DESCRIPTION Printer Status 63

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Table 1-41. List of Service Call Errors (Controller Related)

Internal error code Explanation
1021 RAM error (slot 1)
1120 ROM checksum error (bit 0 to 7) (program)
1121 ROM checksum error (bit 8 to 15) (program)
1122 ROM checksum error (bit 16 to 23) (program)
1123 ROM checksum error (bit 24 to 31) (program)
1200 EEPROM writing error
1210 EEPROM writing times limit
1400 Engine initialization error
1500 CCNV hardware error
1550 Initialization hardware error for SRAM for compression
1600 Video series hardware error (including PWM IC calibration error)
1610 Video series hardware error (VCNV error)
1800 Illegal SPD
1999 Other hardware errors
2000 Software error

PRODUCT DESCRIPTION Printer Status 64

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1.17 Expanding the RAM

When the memory is insufficient, the printer displays the following error messages.
† Mem Overflow
† Duplex Mem Overflow
† Image Optimum
The following methods can be used to clear the errors.
To ensure a stable operation, add more memory.
† Set the resolution to 300 dpi.
† In color printing, change the compression format to lossy compression.
† Set unused interfaces to “Not Use”.

PRODUCT DESCRIPTION Expanding the RAM 65

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1.18 Handling Precautions

1.18.1 Precautions When Turning Off the Power

This printer includes internal, nonvolatile memory (EEPROM), which stores setting
values important to operate the printer normally. If the power is cut off during writing
to the nonvolatile memory, the panel settings return to its default, or a Service Call
error may occur when turning the power back on, or executing Reset All because the
values in the memory are not reliable any more due to the interruption.
The printer is executing the writing when it is in the following conditions, so never turn
the power off at those timings.
† From the time the power is turned on until the Ready LED lights up steadily
† When the Ready LED is flashing
† When the printer is printing (while the paper feed motor is operating)
† When the Data LED is on or flashing

1.18.2 Precautions for High Temperature Parts

Since the fuser unit inside the printer becomes very hot, be sure not to touch it when
opening the cover to remove jammed paper or for any other purposes.

PRODUCT DESCRIPTION Handling Precautions 66

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1.19 Status Sheet „ e : ECP

„ n : Nibble
There are two kinds of status sheet, the Status Sheet (Simplified version) and the Status „ space : Compatibility
Sheet.
11. Number of occurrences of jams indicated by JC and 6 figures
† Status Sheet (Simplified version):
This can be printed using the printer operation panel. And also a Status Sheet on 12. Number of replacements of Toner Cartridge indicated by IC and 12 figures, and
which has no setting information printed by the printer driver is called “Simplified number of recoveries from errors (Toner Cartridge) indicated by 12 figures.
version”. The characters are printed in accordance with the display language Maximum number of times: 255
setting in black and white only.
There is a space between the number of replacements and the number of error
† Status Sheet (Full version): recoveries.
Printing this sheet is executed from the printer driver and the printer setting Both numbers are indicated in order of C, M, Y, K with 3 figures for each.
information can be acquired.
Status Sheet is shown in Figure 1-15 (p.68) and Figure 1-16 (p.69). INFORMATION ON OPTIONS INSTALLED

INFORMATION AT THE BOTTOM 1. RAM DIMM : Total amount of memory including the standard
RAM is indicated as “Installed Memory”.
1. Firmware version in DDYM format beginning with IA 2. Network interface board : Network menu and its setting items are indicated.
2. Code ROM device type. “Network” is added to the “Installed Interface”.
„ * : Flash NOTE: LAN HW Address, LAN HW Revision, LAN FW Revision are added to
„ space : Mask Hardware Configuration
LAN HW Address is the MAC address
3. 4-digit CMTD (Color Matching Table Data) version beginning with A LAN HW Revision is always 0
The LAN FW Revision is network software version.
4. Version of mechanical controller of the engine indicated by 10 figures beginning with
“MC” 3. Optional paper cassette unit
5. Space
Status Sheet (Simple version) Status sheet (Full version)
6. USB ID (31PXXXXXXXXXXXXXXX)
LC is added to the “Input Unit” under the LC is added to the “Input Tray” under
7. Latest connection status of the USB communication mode “Hardware Configuration”. the “Hardware Configuration”.
„ H : HS
„ F : FS 4. Duplex unit
„ space
t

: No USB connection Status Sheet (Simple version) Status sheet (Full version)
8. USB communication mode Duplex is added to the “Input Unit” Duplex is added to the “Input Tray”
„ D : D4 compliant device connected under the “Hardware Configuration”. under the “Hardware Configuration”.

„ space : non D4 compliant device

9. Space (Type-B level)
10. IEEE1284 negotiation result

PRODUCT DESCRIPTION Status Sheet 67

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HARDWARE ENVIRONMENT EXCEPT FOR OPTION

1. Serial No. : Serial number of the unit

2. Firmware Revision : 211XX is indicated.

CONSUMABLE INFORMATION AND PART NUMBER

Name Part Numbers

Toner Cartridge (Cyan) S050193/S050189
Toner Cartridge (Magenta) S050192/S050188
Toner Cartridge (Yellow) S050191/S050187
Toner Cartridge (Black) -/S050190
Photoconductor Unit S051104

NOTE: The first one is the part number of 1.5K, and the latter one is that of 4K.

Figure 1-15. Status Sheet (Simplified version)

PRODUCT DESCRIPTION Status Sheet 68

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Information Part Numbers

Toner Cartridge Cyan Needed Soon E■■■■■■F 0193/0189
Toner Cartridge Magenta Needed Soon E■■■■■■F 0192/0188
Toner Cartridge Yellow Needed Soon E■■■■■■F 0191/0187
Toner Cartridge Black Needed Soon E■■■■■■F 0190
Photoconductor Unit Needed Soon E■■■■■■F 1104
Total Pages 99999999
Color Pages 99999999
B/W Pages 99999999

Tray Menu
MP Tray Size Auto
LC Size A4
MP Type Plain
LC Type Plain

Setup Menu
Lang English
MP Mode Normal
Size Ignore Off
Auto Cont Off
LCD Contrast 7

Parallel Menu
Parallel I/F On
Bi-D ECP

USB Menu
USB I/F On
USB Speed HS

Network Menu
Network I/F On

Hardware Configuration
Serial No. xxxxxxxxxx
Installed Memory 64 MB
Firmware Revision 21301
Installed Interface USB, Network
LAN H/W Address xxxxxxxxxxxx
LAN H/W Revision 0
LAN S/W Revision Pxxxxx
Input Tray MP Tray, LC, Duplex

IAxxxx*AxxxxMCxxxxxxxxxx 31PxxxxxxxxxxxxxxxHD eJCxxxxxxICxxxxxxxxxxxx yyyyyyyyyyyy

Figure 1-16. Status Sheet (Full version)

PRODUCT DESCRIPTION Status Sheet 69

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1.20 Engine Status Sheet

C A U T IO N Do not disclose this information to the user.

It can be output from the Maintenance Menu. For details, refer to Chapter6
“MAINTENANCE” for the Engine Status Sheet.

PRODUCT DESCRIPTION Engine Status Sheet 70

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1.21 Recommended Operating Environment

(Host PC)
† Minimum requirements for Windows
„ OS : Windows® 95/98/Me/2000/XP, Windows NT® 4.0
„ CPU : Pentium® II 233 MHz or more (450 MHz or more recommended)
„ RAM : 64 MB or more (128 MB or more recommended)
„ HDD : 500 MB or more space

* It is recommended to use the computer with higher than the hardware requirements
of the OS.
† Minimum requirements for Macintosh
„ OS : Mac OS 9x/Mac OSX 10.2 or higher
„ CPU : Power PC G3 233MHz (G4 500MHz or higher recommended)
„ RAM : 64 MB or more (128 MB or more recommended)
„ HDD : 100 MB or more space (200 MB or more recommended)

* It is recommended to use the computer with higher than the hardware requirements
of the OS.
† The printer cannot be used under MS-DOS.

PRODUCT DESCRIPTION Recommended Operating Environment (Host PC) 71

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1.22 Paper Handling Algorithm

The relationship between paper type, type and size is shown below

Table 1-42. Engine control, CM

EJL Paper Paper type Engine Control
Page Size PaperType MP or LC1 Type*3 CM
PAPER FACE Source (set by driver) (Video Media Type)
FRONT — — — PostCard (0E) Plain Paper
Postcard*1 —
BACK — — — PostCard Dup (1E) Plain Paper
W Postcard FRONT — — — Covers 2 (0A) Plain Paper
—
Q Postcard BACK — — — Covers 2 Dup (1A) Plain Paper
Envelope*1 — — — — — Envelope (0F) Plain Paper
Plain Letterhead Recycled Color Plain Paper 2 (09) Refer to P73, “CM 1”
SemiThk High Q Paper (08) Refer to P73, “CM 1”
Set by driver
Auto Trnsprnc Transparency (02) Refer to P73, “CM 1”
FRONT
Labels Label Stock 2 (05) Refer to P73, “CM 1”
Not set by driver — Plain Paper 2 (09) Refer to P73, “CM 2”
others — — Plain Paper 2 Refer to P73, “CM 2”
Normal
Plain Letterhead Recycled Color Plain Paper 2 Dup (19) Refer to P73, “CM 1”
SemiThk High Q Paper Dup (18) Refer to P73, “CM 1”
Set by driver
Auto Trnsprnc Transparency (02) Refer to P73, “CM 1”
BACK
Labels Label Stock 2 (05) Refer to P73, “CM 1”
Others Not set by driver — Plain Paper 2 (09) Refer to P73, “CM 2”
others — — Plain Paper 2 (09) Refer to P73, “CM 2”
FRONT — — — High Q Paper (08) Plain Paper
SemiThk
BACK — — — High Q Paper Dup (18) Plain Paper
FRONT — — — Covers 1 (04) Plain Paper
Thick
BACK — — — Covers 1 Dup (14) Plain Paper
FRONT — — — Covers 2 (0A) Plain Paper
ExtraThk
BACK — — — Covers 2 Dup (1A) Plain Paper
Trnsprnc — — — — Transparency (02) OHP
FRONT — — — Post Card Plain Paper
Coated
BACK — — — Post Card Back Plain Paper

Note *1: MON, C10, DL, C5, C6, IB5

PRODUCT DESCRIPTION Paper Handling Algorithm 72

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Table 1-43. CM 1 DUPLEX

CM Media Type MP or LC1-3 Type*1 CM
Table 1-46. Duplex
Plain, SemiThk, Letterhead, Recycled
Standard paper Page Size Paper Type Auto duplex
Off Color, Labels
Trnsprnc OHP Normal
A4, B5, LT, EXE Effective
SemiThk
Option 1 — Option 1
Note : Duplex printing is not possible with paper other than the above.
Option 2 — Option 2
Note *1: Paper Type in Selectype for each paper feeder

Table 1-44. CM 2
CM Media Type CM
Off Standard paper
Option 1 Option 1
Option 2 Option 2

PAPER SOURCE

Table 1-45. Paper Source

Page Size Paper Type Paper Feeder
Post card
Envelope — MP Tray
User defined
Thick
— ExtraThk MP Tray
Trnsprnc
Note : For paper size other than the above, the paper feeder is determined according to the
prescribed algorithm based on the Paper Source, paper type set by the printer driver, and
MP or LC Type.

PRODUCT DESCRIPTION Paper Handling Algorithm 73

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 CHAPTER

2
OPERATING PRINCIPLES

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2.1 Print Process

2.1.1 Print Process Overview
This printer is a “full color laser printer” that uses the principle of electrophotographic
recording. The printer contains a drum that forms toner images by four colors of toner
“Yellow, Magenta, Cyan and Black (simply called YMCK from here on).” The toner
image of each color is formed on the drum, and the toner images formed on the drum is
transferred to the Belt (secondary transfer roller). Full color printing is performed by
overlaying each of the colors on the belt.

The major steps of the print process are described below.

(1) Charging : The drum surface is charged.
(2) Exposure : Image areas are exposed on the drum by a laser beam.
(3) Developing : Image areas on the drum are developed with toner.
(4) Primary transfer : The toner image on the drum is transferred to the Belt.
(5) Cleaning : The drum is cleaned.
(6) Repeat : In the full color mode, steps (1) to (5) are repeated for
each toner.
(7) Secondary transfer : The toner image on the Belt is transferred to the
paper.
Figure 2-1. Print Process Overview
(8) Discharging : The electrical charge of the paper is removed.
(9) Cleaning : The Belt is cleaned.
(10) Fusing : Toner on the paper is fixed with heat and pressure.

OPERATING PRINCIPLES Print Process 75

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2.1.2 Print Process Diagram

The diagram below illustrates the entire print process.

Leg_Sec06_002EB

Figure 2-2. Total Print Process Schematic Diagram

OPERATING PRINCIPLES Print Process 76

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2.1.3 Technical Explanation of Print Process

2.1.3.1 Charging
At the “Charging” process, BCR (Bias Charge Roll) applies a uniform negative
potential to the drum which rotates at a fixed speed.
† BCR keeps contact with the drum and moves together with it.
BCR is a conductive roller, that is negatively charged by HVPS, applies a negative
charge to the drum.
The drum surface is uniformly charged to a negative potential with DC bias
voltage.
† The drum is made of conductive material (aluminum cylinder) coated with a
photosensitive material which becomes insulating material in darkness and
becomes conductive when it is subjected to light.

Figure 2-3. Charging Process

OPERATING PRINCIPLES Print Process 77

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2.1.3.2 Exposure
At the “Exposure” process, a laser beam is applied to the negatively charged surface of
the drum to form an invisible electrostatic latent image onto the drum.
† The laser beam is emitted from a laser diode in the ROS ASSY, and directed by
the polygon mirror, fixed mirror and lens of the Scanner Assy in the ROS ASSY.
A single laser beam is output from the laser diode.
† The laser beam is irradiated according to the print data (image data) from the
printer controller. The laser beam is output only when a pixel data (minute dot
composing the print data) exists. (On parts to be developed by toner, the laser
diode turns ON, and on parts not to be developed, the laser diode turns OFF.)
The drum surface irradiated by the laser beam becomes a conductor, the negative
charge on the drum flows to the positive side, and the potential on the surface of
the drum is reduced in the result. The section of the drum surface where the
potential has reduced becomes the electrostatic latent image.

Drum

Mirror SOS

PWBA LD
Window

Mirror

SOS Sensor

Lens COL
PWBA SOS
Lens CYL

Scanner Assy Figure 2-5. Exposure Process

Lens L1
Polygon Mirror Leg_Sec06_008FA

Figure 2-4. Path followed by the Laser Beam

OPERATING PRINCIPLES Print Process 78

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2.1.3.3 Developing
At the “Developing” process, toner is electrically applied to the invisible electrostatic
latent image on the drum, to form a visivle image on it.

† This printer uses two developing systems: a “rotary developing system” that
successively rotates four Developer Assys, and a “trickle developing system” that
uses developers composed of two components, a carrier and toner.
Developer in the Developer Assy is stirred by a spiral-shaped stirrer called
“Auger”, and is supplied to the Magnet Roll located near the drum surface. The
developer is charged by the friction of stirring (toner: negative charge, carrier:
positive charge), and the charges are electrically attracted each other.
As the carrier is a magnetic body, it is attracted to the magnetized Magnet Roll,
and a uniform layer of carrier is formed on the Magnet Roll by passing through a
Trimmer Blade.
A minus voltage is applied to the Magnet Roll together with AC voltage from the
HVPS.
As the electrostatic latent image on the drum that is formed by exposure is charged
positively compared to the other sections on the drum, the toner charged
negatively on the Magnet Roll is attracted only to the image sections on the drum.

Figure 2-6. Development Process (1)

OPERATING PRINCIPLES Print Process 79

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† Toner in the Developer Assy is consumed as the number of prints increases. To † The charging characteristics of the carrier is depleted due to dirt caused by the
maintain the appropriate development density, the equivalent amount of consumed toner or due to scratches caused by stirring.
toner must be replenished to the Developer Assy from the Toner Cartridge. This To maintain charging characteristics, a minute amount of carrier is mixed into the
replenishment is called “toner dispense.” toner in the Toner Cartridge. While toner and carrier are supplied during toner
Two types of control (“PCDC” and “ADC”) are used in combination for toner dispense, depleted carrier in the Developer Assy is collected in a separate chamber
dispense. in the Toner Cartridge. This is called the “trickle developing system”. Trickle
developing is performed using the rotation of the Rotary Frame Assy during rotary
† To obtain a full color image by the four toner colors, a toner image for each of the
Y, M, C and K colors must be formed on the drum. developing.
On this printer, four Developer Assys are located at 90 degree intervals on the † The following shows the mechanism of trickle developing.
circumference of the Rotary Frame Assy, and by rotating the Rotary Frame Assy,
(1) A pipe is inserted into the carrier in the Developer Assy.
the Developer Assy of each color is made to face the drum on which the toner
image of each color is formed. This is called the “rotary developing system”. (2) A minute amount of carrier is put into the pipe.
(3) The carrier is skimmed and move farther into the pipe.
(4) The carrier is collected to inside the Toner Cartridge.

Figure 2-7. Development Process (2)

Figure 2-8. Development Process (3)

OPERATING PRINCIPLES Print Process 80

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2.1.3.4 Primary transfer (Drum→Belt)

At the “Primary transfer” process, the toner image formed on the drum surface is
transferred to the Belt surface in Photoconductor Unit by 1st BTR (First Bias Transfer
Roll).
† The 1st BTR is a conductive roller, and is positively charged by the HVPS. The 1st
BTR contacts the back side of the Belt and charge the back side to positive.
The negatively charged toner image on the drum surface is attracted to the positive
charge on the back side of the Belt, and is transferred to the Belt from the drum.

Figure 2-9. Primary transfer (Drum→Belt)

OPERATING PRINCIPLES Print Process 81

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2.1.3.5 Cleaning (drum)

At the “Cleaning (drum)” process, residual toner is removed from the drum surface.
† Cleaning the drum
Toner that was not transferred to the Belt at the “Primary transfer” process remains
on the drum surface. Since the remaining toner hinder subsequent processes, it is
scraped off by a Cleaning Blade that contacts with the drum, and is collected in the
Waste Toner Box.

Figure 2-10. Cleaning (drum)

OPERATING PRINCIPLES Print Process 82

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2.1.3.6 Repeat (formation of complete toner image)

At the “Repeat (formation of complete toner image)” process, the toner images of each
color formed on the drum surface are successively transferred to the Belt to form a
complete toner image composed of the four colors on the Belt surface.

Figure 2-11. Repeat (1)

Figure 2-12. Repeat (2)

OPERATING PRINCIPLES Print Process 83

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2.1.3.7 Secondary transfer (Belt→Paper)

At the “Secondary transfer” process, the complete toner image formed on the Belt
surface is transferred to paper by the 2nd BTR (Second Bias Transfer Roll).
† The 2nd BTR comes in contact with the Belt only when transferring the image to
paper to prevent the toner image formed on the Belt surface from being destroyed.
Normally, the 2nd BTR is located at its home position where is detected by the 2nd
BTR Retract Sensor. And the 2nd BTR Retract Motor moves the 2nd BTR to
contact with the paper.
† The 2nd BTR is a conductive roller. It contacts with the back side of the paper (the
opposite side of the side to be printed), and charged positively by the HVPS.
The Back Up Roll, located on the opposite side of the Belt from the 2nd BTR, is a
conductive roller and earthed to the Frame ground.
By positively charging the back side of the paper by the 2nd BTR, the negatively
charged toner image on the Belt is attracted to the paper and the image appears on
the paper.

Figure 2-14. Secondary transfer (Belt→Paper) (2)

SENSOR 2BTR RETRACT

2ND BTR ASSY MOT ASSY MICRO

Leg_Sec06_026FB

Figure 2-13. Secondary transfer (Belt→Paper) (1)

OPERATING PRINCIPLES Print Process 84

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2.1.3.8 Discharging 2.1.3.10 Fusing

At the “Discharging” process, the charge on the paper is neutralized/removed by the At the “Fusing” process, toner is fixed on paper with heat and pressure.
Detack Saw.
† Fuser Assy does not have a pressure roll, but has a Fuser Belt instead.
† The Detack Saw contacts the back side of the paper. The charge created at the By MOT ASSY FSR drive, Heat Roll rotates and Fuser Belt is driven by the
“Secondary transfer” process is neutralized/removed to prevent the toner from friction. The inner structure of the Fuser Belt is, as shown in the figure below,
splattering around the metal parts. designed to generate a pressure on the Belt and the Heat Roll (Nip Part) to contact
them firmly each other.
† The toner melts by the Heat Roll heated by the Heater Lamp in the Fuser Assy, and
2.1.3.9 Cleaning then the toner is fixed on the paper by the pressure of the Fuser Belt.
At the “Cleaning (belt)” process, the toner remaining on the Belt surface is removed
after the toner image is transferred to the paper.
† The Belt Cleaner contacts the Belt only when cleaning the Belt to prevent the toner
image formed on the Belt surface from being destroyed. The IBT Retract Motor
moves the Belt Cleaner to contact the Belt.
† Toner remaining on the Belt surface is absorbed by the Cleaning Roll. Then, the
toner is absorbed by the brush and collected in the Waste Toner Box.

Figure 2-16. Fusing

Figure 2-15. Cleaning

OPERATING PRINCIPLES Print Process 85

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2.2 Flow of Print Data <Reference> Formation of 2-D print image:

One line of the dot image is formed by turning the laser beam from the laser diode
ON and OFF in accordance with the electric signals (VIDEO signal: expresses the
2.2.1 Data Flow image data by voltage levels) from the printer controller.
A single-color image (2-D dot image) is completed by performing the above
Print data (electric signals) from the Printer Controller follows the flow shown below
operation repeatedly over the entire surface of the image. To obtain a full color
to become a print image.
image, formation of 2-D dot images is performed for each of the four colors.
Resolution is determined as follows:
• Main direction : dots/inch
Host (electric signal)
• Sub direction : Lines/inch

Printer controller (electric signal)

ROS ASSY (laser beam)

Electrostatic latent image on drum

(invisible image)

Toner image on drum (toner image)

Toner image on Belt (secondary transfer roller)

Toner image on paper

Figure 2-18. Formation of 2-D Print Image
Print image on paper

Leg_Sec06_033FA

Figure 2-17. Overview of Producing Print Image

OPERATING PRINCIPLES Flow of Print Data 86

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2.3 Drive Transmission Path

CLUTCH ASSY FEED GEAR FEED

2.3.1 DRIVE ASSY FEED

Rotation of DRIVE ASSY FEED is transmitted as follows:

DRIVE ASSY FEED

CLUTCH ASSY FEED GEAR FEED

DRIVE ASSY FEED FRONT

Leg_Sec06_042EB
ROLL ASSY TURN 500 ROLL ASSY FEED 500
Figure 2-20. Diagram of Drive Transmission Path

500 FEEDER ASSY

Leg_Sec06_035EB

Figure 2-19. Drive Transmission Flow

OPERATING PRINCIPLES Drive Transmission Path 87

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2.3.2 MOTOR ASSY P/R, DRIVE ASSY PRO

Rotation of MOTOR ASSY P/R and DRIVE ASSY PRO is transmitted as follows: GEAR DRIVE BRUSH
GEAR DTR 23
MOT ASSY P/R DRIVE ASSY PRO GEAR IDLE 26/40
GEAR BRUSH 22/30
GEAR BRUSH 32
IBT ASSY
FLANGE

GEAR INPUT GEAR-19 MOT ASSY P/R

DRUM

GEAR BRUSH 22/30 CAM ASSY-IBT CL

CAM ASSY
GEAR BRUSH 32
GEAR INPUT
GEAR-19

DRIVE ASSY PRO

GEAR DRIVE BRUSH

FRONT

ROLL ASSY BRUSH IBT GEAR IDLE 26/40 Leg_Sec06_045EC

Figure 2-22. Diagram of Drive Transmission Path

GEAR DTR 23

ROLL DTN
Photoconductor Unit

Leg_Sec06_036EB

Figure 2-21. Drive Transmission Flow

OPERATING PRINCIPLES Drive Transmission Path 88

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 EPSON AcuLaser C1100 Revision B

2.3.3 MOTOR ASSY MAG, MOTOR ASSY ROT

Rotation of MOTOR ASSY MAG and MOTOR ASSY ROT is transmitted as follows:
MOT ASSY MAG

MOT ASSY MAG MOT ASSY ROT

INPUT GEAR(C)

INPUT GEAR(K)
GEAR IDLE DISP INPUT GEAR FRAM ASSY-ROTARY GEAR IDLE DISP(K)

GEAR IDLE DISP(C)

GEAR IDLE DISP(Y)
GEAR AUGER DISPENCE
INPUT GEAR(M)
GEAR IDLE DISP(M)

AUGER DISPENCE GEAR MAG

INPUT GEAR(Y)

GEAR IDLE GEAR AUGER SUPPLY ROLL MAG

FRAM ASSY-ROTARY MOT ASSY ROT

GEAR AUGER ADMIX AUGER SUPPLY FRONT

Leg_Sec06_044FC

AUGER ADMIX
HOUSING ASSY-DEVE
Figure 2-24. Diagram of Drive Transmission Path

GEAR AGITATOR

DEVE ASSY
AGITATOR

TNR CRU
(TONER CARTRIDGE)

Leg_Sec06_037FB

Figure 2-23. Drive Transmission Flow

OPERATING PRINCIPLES Drive Transmission Path 89

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 EPSON AcuLaser C1100 Revision B

2.3.4 MOTOR ASSY DUP

Rotation of MOTOR ASSY DUP is transmitted as follows:
INVERTER ASSY DUP

MOTOR ASSY DUP MOTOR ASSY DUP INV

GEAR 30

GEAR 48H GEAR 48H GEAR 36

GEAR 20/21H
GEAR 30
GEAR 40/42 GEAR 40/42 GEAR 20/21H GEAR 48H
GEAR 36
MOTOR ASSY DUP INV
GEAR 36
GEAR 36 GEAR 36 GEAR 36
GEAR 40/42
GEAR 48H
GEAR 36 GEAR 36 GEAR 30 MOTOR ASSY DUP
GEAR 40/42
GEAR 30 OW GEAR 30 ROLLER ASSY INVERTER GEAR 36
GEAR 36
INVERTER ASSY DUP TRANSPORT ASSY DUP
GEAR 30 OW
ROLLER ASSY DUP OUT ROLLER ASSY DUP

TRANSPORT ASSY DUP

Leg_Sec06_038FB

Figure 2-25. Drive Transmission Flow FRONT

Leg_Sec06_041FC

Figure 2-26. Diagram of Drive Transmission Path

OPERATING PRINCIPLES Drive Transmission Path 90

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 EPSON AcuLaser C1100 Revision B

2.3.5 MOTOR ASSY FSR

Rotation of MOTOR ASSY FSR is transmitted as follows:
FUSER ASSY
MOTOR ASSY FSR (Fuser Motor) GEAR EXIT

GEAR-IDLER EXIT

GEAR 2ND DRIVE ASSY BTR ROLL ASSY FUSER

GEAR-IDLER

BELT ASSY GEAR 2ND

GEAR-IDLER GEAR-27
GEAR HR
MOTOR ASSY FSR
GEAR-IDLER EXIT GEAR HR 2ND BTR ASSY
DRIVE ASSY BTR
GEAR-28
GEAR-27
GEAR EXIT ROLL ASSY FUSER MOT ASSY MICRO
MOT ASSY MICRO 2ND BTR ASSY

TRANSFER ASSY
EXIT ROLLER BELT ASSY GEAR-28
FRONT
Leg_Sec06_043EC

FUSER ASSY
CAM ASSY-2ND

TRANSFER ASSY
Figure 2-28. Diagram of Drive Transmission Path

Leg_Sec06_039EB

Figure 2-27. Drive Transmission Flow

OPERATING PRINCIPLES Drive Transmission Path 91

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 EPSON AcuLaser C1100 Revision B

2.3.6 MOTOR-PH
Rotation of MOTOR-PH is transmitted as follows:

PH ASSY

MOTOR-PH
CLUTCH ASSY REGI GEAR 21/104

GEAR 43 MOTOR -PH

GEAR 21/104
GEAR 28/40

GEAR 43 GEAR PICK UP

GEAR 43 GEAR 43

CLUTCH ASSY PRE REGI

CLUTCH ASSY REGI CLUTCH ASSY PRE REGI GEAR 28/40

FRONT
HOLDER ASSY RETARD MSI MSI
Leg_Sec06_046EC
ROLL REGI METAL ROLL ASSY-PRE REGI
GEAR PICK UP

Figure 2-30. Diagram of Drive Transmission Path

ROLL REGI RUBBER
ROLL ASSY MSI

PH ASSY

HOLDER ASSY RETARD MSI

MSI

Leg_Sec06_040EB

Figure 2-29. Drive Transmission Flow

OPERATING PRINCIPLES Drive Transmission Path 92

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 EPSON AcuLaser C1100 Revision B

2.4 Paper Feed

This section explains and illustrates the main functional components that make up the
paper feed section. The components are divided into four blocks as follows based on
the basic configuration.
† MSI (Multi Sheet Inserter)
† Registration & FUSER
† 500 Paper Feeder
† Duplex (Option)

Leg_Sec06_004EC

Figure 2-31. Paper Feed Path Layout

OPERATING PRINCIPLES Paper Feed 93

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2.4.1 MSI (Multi Sheet Inserter)

ROLL MSI
MAIN FUNCTIONS
† GUIDE SIDE L/GUIDE ASSY SIDE R
GUIDE SIDE L and GUIDE ASSY SIDE R move crossways of the paper feed
direction, and true up the left and right edges of sheets of paper.
† SOLENOID PICK UP
The SOLENOID PICK UP controls rotation of GEAR PICK UP. When the
Solenoid is excited, GEAR PICK UP is unlocked, and ROLL MSI rotates by drive
of the MOTOR-PH.
† PLATE BOTTOM ASSY MSI
PLATE BOTTOM ASSY MSI is normally pressed down by the Cam attached to
the shaft. During paper feed, the shaft rotates, releasing the clamping action of the
cam, and the paper is pressed against the ROLL MSI by spring pressure.
† ROLL MSI
Paper that is pressed down by the PLATE BOTTOM ASSY MSI is fed by the SOLENOID PICK UP
frictional force of the ROLL MSI. Leg_Sec06_048FB

† SENSOR PAPER EMPTY Figure 2-33. Main Components of MSI (2)

The SENSOR PAPER EMPTY detects the presence of paper. When the printer
runs out paper, the actuator of the sensor comes down by its own weight and
shields the sensor, and the no paper state is detected. (No paper state : Shielding
the sensor) CAM

ROLL MSI

SOLENOID PICK UP

CAM

SENSOR PAPER EMPTY ROLL MSI

GUIDE SIDE L

Leg_Sec06_049FB

GUIDE ASSY SIDE R Figure 2-34. Operation of PLATE BOTTOM ASSY MSI
PLATE BOTTOM ASSY MSI Leg_Sec06_047EB

Figure 2-32. Main Components of MSI (1)

OPERATING PRINCIPLES Paper Feed 94

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2.4.2 Registration & FUSER

MAIN FUNCTIONS FUSER ASSY

† CLUTCH ASSY PRE REGI Fuser Exit Sensor

The drive from the MOTOR-PH is transmitted to the ROLL ASSY-PRE REGI, SENSOR FUSER IN
CLUTCH ASSY REGI
and paper is fed to the registration section.
† SENSOR OHP
This reflective sensor detects whether the print media is plain paper or SENSOR REGI
transparencies. If the light emitted from the light emitter of the sensor is reflected
by the media, the sensor judges that the media is plain paper.
† SENSOR REGI
This sensor detects that the leading edge of the paper has reached the Regi Assy.
(No paper state: Light enters the sensor)
† CLUTCH ASSY REGI MOTOR-PH
The drive from the MOTOR-PH is transmitted to the ROLL-REGI METAL, and
paper is fed to the transfer section.
† MOTOR-PH
This DC motor drives the MSI and the Rolls in the registration section.
† SENSOR FUSER IN
This reflective sensor detects that paper has come to just before the fusing section.
† FUSER ASSY
This fixes the completed toner image that was transferred by the 2nd BTR on the
paper, and feeds the paper before and after fixing. CLUTCH ASSY PRE REGI
† Fuser Exit Sensor (Inside the FUSER ASSY) SENSOR OHP
This sensor detects that paper has been ejected from the Fuser. Leg_Sec06_050EB
(No paper state : Shielding the sensor)

Figure 2-35. Main Components of Registration & FUSER

OPERATING PRINCIPLES Paper Feed 95

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2.4.2.1 Adjusting the leading edge of the paper

If paper is fed up to the toner transfer section from the tray or cassette without ROLL-REGI METAL
adjusting the alignment of the paper, the image sometimes cannot be transferred at the
correct position. In the registration section, the leading edge of the paper is aligned to
the correct position by the “Roll Loop” system.
The paper, which has passed through the ROLL ASSY-PRE REGI, is pressed against
the stopped ROLL-REGI METAL by the “Roll Loop” system to make the paper
curved. When the ROLL-REGI METAL is rotated with the paper curved, the paper can
be fed from the ROLL-REGI METAL without displacement.

ROLL ASSY-PRE REGI

Leg_Sec06_051FB

Figure 2-36. Adjusting the leading edge of the paper

OPERATING PRINCIPLES Paper Feed 96

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 EPSON AcuLaser C1100 Revision B

2.4.3 500 Paper Feeder PLATE ASSY BOTTOM 500

500 PAPER CASSETTE ASSY
GUIDE PAPER L ASSY 500
MAIN FUNCTIONS GUIDE PAPER R ASSY 500
† CONNECTOR (HARNESS-ASSY FEED1)
This is used for performing communications with the main unit and supplying
power to the Paper Feeder.
† PWBA TRAY 500
Controls Motors and Sensors in the 500 Paper Feeder.
† 500 PAPER CASSETTE ASSY
The Paper Cassette Tray can load 500 sheets of paper.
† GUIDE PAPER L ASSY 500 / GUIDE PAPER R ASSY 500
GUIDE PAPER L ASSY 500 and GUIDE PAPER R ASSY 500 move crossways
of the paper feed direction, and true up the left and right edges of sheets of paper.
† GUIDE END ASSY GUIDE END ASSY Leg_Sec06_052EB
The GUIDE END ASSY moves parallel to the paper feed direction, and true up
the top and bottom edges of sheets. Figure 2-37. Main Components of 500 Paper Feeder (1)
† PLATE ASSY BOTTOM 500
The PLATE ASSY BOTTOM 500 locks on the bottom side when the 500 PAPER MOTOR ASSY FEEDER
CASETTE ASSY is drawn out of the Paper Feeder. When the 500 PAPER SWITCH FEEDER DOOR
CONNECTOR SENSOR T/R
CASETTE ASSY is inserted into the Paper Feeder, the PLATE ASSY BOTTOM
PWBA MOT ROLL ASSY TURN 500
is unlocked, and paper is pressed against the ROLL ASSY FEED 500 by the force
of the spring. PWBA TRAY 500

† MOTOR ASSY FEEDER

The MOTOR ASSY FEEDER drives the ROLL ASSY FEED 500 and ROLL
ASSY TURN 500.
† ROLL ASSY TURN 500
Feeds the paper fed by the ROLL ASSY FEED 500 to the registration section.
† SENSOR T/R
This sensor detects that paper is fed from the 500 PAPER CASSETTE ASSY.
(No paper state : Shielding the sensor) HOLDER ASSY RETARD 500
† SENSOR NO PAPER ROLL ASSY FEED 500
The SENSOR NO PAPER detects the presence of paper. When the printer runs out
SOLENOID FEED
paper, the actuator of the sensor comes down by its own weight to shield the SENSOR NO PAPER
sensor, and the no paper state is detected. (No paper state : Shielding the sensor) Leg_Sec06_053EB

† SWITCH FEEDER DOOR Figure 2-38. Main Components of 500 Paper Feeder (2)
SWITCH FEEDER DOOR detects whether the Tray door is opened or closed.

OPERATING PRINCIPLES Paper Feed 97

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† SOLENOID FEED
The SOLENOID FEED controls rotation of the Feed Gear. When the SOLENOID
FEED turns ON, the Feed Gear is unlocked and Feed Roll rotates. The
SOLENOID FEED is repeatedly turned ON/OFF each time a sheet is fed to
control the feeding timing.
† ROLL ASSY FEED 500
Paper that is pressed down by the PLATE ASSY BOTTOM 500 is fed by the
frictional force of ROLL ASSY FEED 500. When the 500 PAPER CASETTE ROLL ASSY FEED 500
ASSY is drawn out, the nip with the HOLDER ASSY RETARD 500 is released.
HOLDER ASSY RETARD 500
† LOCK MC TO FDR
Turn the levers on the left and right to firmly lock the 500 Paper Feeder to the
SOLENOID FEED
main unit. Leg_Sec06_054FB

Figure 2-39. Operation of SOLENOID FEED

Lock MC To FDR
Leg_Sec06_071EA

Figure 2-40. LOCK MC TO FDR

OPERATING PRINCIPLES Paper Feed 98

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2.4.4 Duplex SOLENOID ASSY DUP

MAIN FUNCTIONS ROLLER ASSY INVERTER

† SWITCH-DUP DOOR
SENSOR UPPER PASS
The SWITCH-DUP DOOR detects whether the Duplex door is opened or closed.
† SOLENOID ASSY DUP
The SELENOID ASSY DUP switches the gate inside the Fuser. When the
SELENOID ASSY DUP turns ON, the actuator pushes the gate up, and the paper
is fed to the Invert section.
† MOTOR ASSY DUP INV
The MOTOR ASSY DUP INV drives the ROLLER ASSY INVERTER, and feeds
paper to the Transport section. When the paper ejected from the Fuser comes to the
catch tray side, the Motor starts to rotate in reverse, and the paper is fed to the MOTOR ASSY DUP INV
Transport section.
ROLLER ASSY DUP
† SENSOR UPPER PASS
The SENSOR UPPER PASS detects that paper has been fed to the reversing SWITCH-DUP DOOR
section of the Duplex. (No paper state : Shielding the sensor) ROLLER ASSY DUP OUT
† MOTOR ASSY DUP PWBA DUP-L
MOTOR ASSY DUP drives ROLLER ASSY DUP and ROLLER ASSY DUP
OUT to feed paper inside the Transport section.
MOTOR ASSY DUP
† SENSOR LOW PASS
The SENSOR LOW PASS detects that paper has been fed inside the Transport
section. (No paper state : Shielding the sensor)
† PWBA DUP-L
The PWBA DUP-L controls the motors and sensors inside the duplex unit.

SENSOR LOW PASS Leg_Sec06_055FB

Figure 2-41. Main Functional Components of Duplex

OPERATING PRINCIPLES Paper Feed 99

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2.5 Xerographic
This section explains and illustrates the main functional components that consist of the
Xerographic.
† The Xerographic is divided into the following four blocks based on the basic
configuration. Photoconductor Unit
„ ROS ASSY FUSER

„ Photoconductor Unit
„ Development
„ 2nd BTR & FUSER

2nd BTR
Development

ROS ASSY

Leg_Sec06_003EB

Figure 2-42. Xerographic Structure

OPERATING PRINCIPLES Xerographic 100

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2.5.1 ROS
MAIN FUNCTIONS
† ROS ASSY
„ ROS ASSY (Raster Output Scanner Assembly) is the exposure unit that
outputs the laser beam to make the electrostatic latent image on the drum Drum
surface. (From here on, ROS ASSY is simply called “ROS.”)
ROS consists of the components shown in Figure 2-43.
„ The PWBA LD (Laser Diode) converts the image data (electric signal), to
laser light ON/OFF signals.
PWBA LD constantly monitors the laser light intensity so that laser intensity Mirror SOS
stabilizes to the appropriate level when making the electrostatic latent image. PWBA LD
This is called " APC (Automatic Power Control". Window

„ The Scanner Assy consists of a Scanner Motor that operates at a fixed speed
and a polygon mirror attached to the Motor’s rotary shaft. Mirror
The laser beam emitted from the PWDA LD is irradiated on the polygon
mirror.
SOS Sensor
The polygon mirror has six reflecting mirror surfaces, and the angle of the
reflected laser beam changes by rotation of the Scanner Motor. This lets the Lens COL
laser beam scan across on the Drum from side to side. The laser beam makes a PWBA SOS
Lens CYL
single line on the Drum with one reflective mirror.
Scanner Assy
„ The laser beam reflected by the polygon mirror passes through the lens, Lens L1
Polygon Mirror Leg_Sec06_008FA
mirror and window to reach the drum surface. The lens functions to
compensate for aberration, the mirror to ensure an optical path, and the
window to prevent the entry of foreign bodies into ROS.
„ The timing to start writing image data must synchronize exactly with the
Figure 2-43. Main Functional Components of ROS
beginning of laser scanning in order to properly form an electrostatic latent
image on the drum surface. When the SOS sensor on the PWBA SOS (Start
Of Scan) receives the laser beam, it converts the laser into an electric signal
(SOS signal) for detecting the initial position (start of scan reference point) for
scanning the various lines.

OPERATING PRINCIPLES Xerographic 101

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2.5.2 Photoconductor Unit † SENSOR ASSY ADC

SENSOR ASSY ADC reads the toner patch densities on the Belt immediately
MAIN FUNCTIONS before secondary transfer, and converts the read densities to voltage values. These
voltage value are used for controlling toner density.
Photoconductor Unit consists of the Belt, Belt Cleaner, Drum, Drum Cleaner, 1st BTR, † SENSOR HUM & TEMP
and Waste Toner Boxes for each cleaner. And ANTENNA ASSY, SENSOR TR-0, SENSOR HUM & TEMP detects the temperature and humidity inside the printer,
SENSOR ASSY ADC, SENSOR IBT RETRACT, SENSOR HUM & TEMP, MOT and converts these to voltage values. These voltage value are used for controlling
ASSY P/R, IBT Brush Motor, and IBT Cleaner Retract Motor are installed inside the toner density.
printer for control of Photoconductor Unit operation.
Cleaning Sheet
† Photoconductor Unit
Cleaner Brush Cleaning Roll
„ The toner images of each color developed on the drum surface are transferred
to the IBT Belt one color at a time from 1st BTR, and the full color toner
image is formed by overlaying the four colors. The full color toner image is
transferred to paper by positively charging the paper with the 2nd BTR.
„ Toner remaining on the Belt surface is collected in the Waste Toner Box by
the Cleaning Blade and brush in the Belt Cleaner.
„ The Drum is made of conductive material (aluminum cylinder) coated with a
photosensitive material which becomes insulating material in darkness and
becomes conductive when it is subjected to light. The Drum Cleaner consists
of a Cleaning Blade and Waste Toner Box, and scrapes off toner remaining on SENSOR IBT RETRACT
the drum surface by the Cleaning Blade that contacts with the drum.The 1ST BTR
Waste Toner Box contains an actuator for SENSOR TNER FULL. This
actuator operates as the amount of collected waste toner increases to block ANTENNA ASSY
light entering the sensor to detect a full toner state.
„ The 1st BTR is a conductive roller, and is charged positively by the HVPS. Belt
The 1st BTR contacts the back side of the belt to positively charge it. IBT Cleaner
Retract Motor
„ Specific data relating to Photoconductor Unit is stored in CRUM XERO.
† IBT Brush Motor (DRIVE ASSY PRO)
IBT Brush Motor drives the brush in the Belt Cleaner. IBT Brush Motor

† IBT Cleaner Retract Motor (DRIVE ASSY PRO)

The IBT Cleaner Retract Motor drives the cam to make the Belt Cleaner to contact SENSOR TR-0
Drum Cleaner
with the IBT Belt.
† SENSOR IBT RETRACT
The SENSOR IBT RETRACT detects the position of the cam for retracting the
Belt Cleaner. MOT ASSY P/R
† MOT ASSY P/R
MOT ASSY P/R drives the Drum. The Motor is connected to the Drum via a SENSOR HUM & TEMP
coupling. SENSOR ASSY ADC
† SENSOR TR-0 SENSOR TNER FULL
Drum Leg_Sec06_056EC
Sensor TR-0 detects the position of the Belt by reading the silver sticker on the
Belt surface outside the toner image formation area. Figure 2-44. Main Functional Components of Photoconductor Unit

OPERATING PRINCIPLES Xerographic 102

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† SENSOR TNER FULL

SENSOR TNER FULL detects the full state of the Waste Toner Box. Toner
remaining on the drum is scraped off by the Cleaning Blade, and collected in the
Waste Toner Box. The Waste Toner Box is provided with an actuator for blocking
light entering the sensing element on the SENSOR TNER FULL. The actuator is
supported by a spring, and is designed to gradually fall by the weight of the toner.
When the actuator falls and blocks the SENSOR TNER FULL, the printer detects
that the Waste Toner Box is full.

Actuator

SENSOR TNER FULL Leg_Sec06_068FB

Figure 2-45. SENSOR TONER FULL Mechanism

OPERATING PRINCIPLES Xerographic 103

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2.5.3 Development TNR CRU HOUSING ASSY-DEVE

ANTENNA CTRG
MAIN FUNCTIONS
The Rotary Developer consists of four (four colors) Toner Cartridges, ANTENNA
CTRG, HOUSING ASSY-DEVE, and FRAME ASSY ROTARY. And Dispense
Clutch, MOT ASSY MAG, MOT ASSY ROT, and SENSOR ROTARY HOME POSI MOT ASSY MAG
are installed inside the printer for control of Rotary Developer operation.
† Toner Cartridge
„ Toner Cartridge supplies toner and carrier. And it has a separate chamber for
collecting depleted carrier. This is called “Trickle Developing System”. MOT ASSY ROT
„ Specific data relating to the Toner Cartridge is stored on the ANTENNA
CTRG. Writing of data to the ANTENNA CTRG is performed by wireless
communications.
† HOUSING ASSY-DEVE Dispense Clutch
The HOUSING ASSY-DEVE is provided for each of the Y, M, C and K colors.
Each HOUSING ASSY-DEVE consists of a special Auger for stirring and
supplying Toner, a Magnet Roll for attracting magnetic carrier, forming the
development layer and supplying toner to the drum, and a Trimmer Blade for
SENSOR ROTARY HOME POSI
making a uniform development layer on the Magnet Roll. Leg_Sec06_058FB
The Frame Assy-Rotary has holes for inserting the bosses of the HOUSING
Figure 2-46. Main Components of Development
ASSY-DEVE. To prevent inserting another color's by mistake, the location of the
holes are different from each other.
K

M Leg_Sec06_066FA

Figure 2-47. Structure of HOUSING ASSY-DEVE to prevent wrong insertion

OPERATING PRINCIPLES Xerographic 104

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† Dispense Clutch (Inside the MOT ASSY MAG)

The Dispense Clutch is provided to transmit the drive of MOT ASSY MAG to LATCH ROTARY
rotate the Augers for supplying toner.
† MOT ASSY MAG
The MOT ASSY MAG rotates the Magnet Roll in the HOUSING ASSY-DEVE.
† MOT ASSY ROT
The MOT ASSY ROT rotates the FRAME ASSY ROTARY that holds the
HOUSING ASSY-DEVE.
† SENSOR ROTARY HOME POSI
The SENSOR ROTARY HOME POSI detects the position of the Rotary Front Cover
Developer to keep the Developer in the right position. The home position is about
10 degrees CW from the transfer position of the black toner Developer.
† LATCH ROTARY
LATCH ROTARY is interlocked with movement of the Front Cover. When the
Front Cover is closed, LATCH ROTARY is pressed by the protrusion on the Front
Cover to lock the Rotary Developer. When the Front Cover is opened, LATCH
ROTARY returns to the release position to unlock the Rotary Developer.

Leg_Sec06_059EB

Figure 2-48. LATCH ROTARY

OPERATING PRINCIPLES Xerographic 105

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2.5.4 Second BTR & FUSER

MAIN FUNCTIONS
† 2ND BTR ASSY
The Second BTR (2ND BTR ASSY) is a conductive roll. It contacts the back of
paper (back of the side to be printed on) and a voltage is applied from the HVPS.
† MOT ASSY MICRO
MOT ASSY MICRO makes the BTR contact the paper during 2nd transfer
process, and releases BTR from the paper after the 2nd transfer. When the Motor
starts to operate, the shaft rotates to rotate the cam attached to the shaft. The lever
attached with the BTR is pressed by the eccentric cam, and the BTR contacts the
paper to transfer the toner image to the paper. After completion of the transfer, the
lever returns to its original position by spring force when the Motor starts to SENSOR 2BTR RETRACT
operate again. This causes the BTR to return to the non-contact position. 2ND BTR ASSY
MOT ASSY MICRO
† SENSOR 2BTR RETRACT
Leg_Sec06_070FB
The position of BTR is detected by the SENSOR 2BTR RETRACT. The shaft
with the cam for contacting/releasing BTR is provided with a Sensor actuator. The Figure 2-49. Retracting operation of Second BTR
non-contact state of BTR is detected by the actuator shielding the Sensor, and the
contact state of the BTR is detected when the Sensor is subjected to light.
FUSER ASSY Exit Roll

† FUSER ASSY Exit Sensor

Temp. Sensor
The FUSER ASSY fixes the completed toner image transferred on the paper by Thermostat
Temp. Sensor
heat and pressure. It also functions to feed paper before and after fixing, and feed
paper to the eject tray or Duplex by switching the gate inside the Fuser. Belt
The Fuser consists of the following parts: Heat Roll

„ Heat Roll
Heater Lamp
„ Belt
„ Heater Lamp
„ Exit Roll
„ Thermostat
„ Temp. Sensor
„ Exit Sensor

Leg_Sec06_060EA

Figure 2-50. Main Components of FUSER

OPERATING PRINCIPLES Xerographic 106

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2.6 Electrical
FUSER LOCK SWITCH
This section explains and illustrates the main functional components making up the SWITCH 2BTR COVER
OP PANEL
SWITCH-FUSER DOOR
Electrical system. SWITCH ASSY TOP

SWITCH-INLK FUSER SWITCH-INLK FRONT

MAIN FUNCTIONS SWITCH-FRONT DOOR

† PWBA MCU
PWBA MCU performs communication with the printer controller, and controls the PWBA MCU
parts to perform printing operations.
† LV/HVPS
SWITCH-PH DOOR
LV/HVPS supplies +24 VDC, + 5VDC and +3.3 VDC to each of the parts from
the AC power supply, and supplies high voltage to the parts for transferring and
discharging.
PWBA ESS
† PWBA HVPS (Printer controller)

PWBA HVPS supplies high voltage to IBT Cleaner, 2nd BTR, and Cleaning
Sheet.
† PWBA FUSER CONT
PWBA FUSER CONT performs ON/OFF control of Fuser Lamp, and turns the PWBA FUSER CONT
PWBA HVPS
AC power to be supplied to the printer ON/OFF by the switch located on PWBA.
PWB ASSY ROT
† PWB ASSY ROT LV / HVPS
PWBA CRUM
PWB ASSY ROT creates the pulse for the motors according to input signal from Leg_Sec06_061EC

the PWBA MCU and supplies the pulse signal to the motors.
Figure 2-51. Main Functional Components of Electrical

OPERATING PRINCIPLES Electrical 107

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† PWBA ESS (Printer controller)

LATCH LEVER
PWBA ESS converts the print data is input via the network, USB, parallel ports, or
other interfaces, and performs communications with the computer. The memory
can be expanded up to 256 MB with an additional memory (option). FUSER ASSY
† OP PANEL
OP PANEL displays the printer status on the LCD or by LEDs. Printer operations
are performed by the buttons on OP PANEL.
† SWITCH-FUSER DOOR
SWITCH-FUSER DOOR detects whether the COVER FUSER is opened or
closed.
† SWITCH-PH DOOR
SWITCH-PH DOOR detects whether the CHUTE ASSY REAR is opened or
closed.
† PWBA CRUM
This non-volatile memory saves printer information. (Non-Volatile Memory)
† SWITCH 2BTR COVER
SWITCH 2BTR COVER detects whether the COVER-PR 2ND is opened or
closed.
FUSER LOCK SWITCH
† SWITCH ASSY TOP Leg_Sec06_072EB
SWITCH ASSY TOP is a switch to cut the +24VDC power supply for driving Figure 2-52. FUSER LOCK SWITCH
motors and other parts when the COVER TOP is opened. Detection of opening/
closing is performed by detecting a change in voltage caused +24 VDC being
conversed to +3.3 VDD by the +24 VDC dividing circuit in MCU.
† SWITCH-INLK FUSER
SWITCH-INLK FUSER is a switch to cut the +24VDC power supply for driving
motors and other parts when the COVER FUSER is opened.
† SWITCH-INLK FRONT
SWITCH-INLK FRONT is a switch to cut the +24VDC power supply for driving
motors and other parts when the COVER FRONT ASSY U is opened.
† SWITCH-FRONT DOOR
SWITCH-FRONT DOOR detects whether the COVER FRONT ASSY is opened
or closed.
† FUSER LOCK SWITCH
This printer is equipped with a FUSER LOCK SWITCH for detecting the
mounting state of the FUSER ASSY. When the FUSER ASSY is not locked or not
adequately locked by the latch lever, the FUSER LOCK SWITCH cuts the coil
power supply for the Fuser Lamp power supply relay inside PWBA FUSER
CONT. This causes the printer a service call error “E537 FUSER ASSY error” to
prevent the printer from operating.

OPERATING PRINCIPLES Electrical 108

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2.7 Operating Modes

The printer has the following six operating modes:
† WARM UP mode : The printer is warming up (until the printer is ready for
printing).
† READY mode : The printer has finished the warm-up and is ready for
printing.
† PRINTING mode : The printer is currently printing.
† LIGHT SLEEP mode : The FUSER is turned OFF to save power.
† DEEP SLEEP mode : In addition to the Fuser, +24VDC is also turned OFF to
save more power.
† ERROR mode : The printer has detected an error.
The following are not defined as the ERROR mode.
•No paper (when the printer detects there is no paper in
the tray or cassette)
• No paper tray (when the printer detects there is no paper
cassette)
• Warnings relating to service life of consumables Figure 2-53. Operating Modes Overview

OPERATING PRINCIPLES Operating Modes 109

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2.8 Control
1st BTR
2.8.1 Paper size control
As this printer does not have switches, etc. for detecting paper size, only the paper
length is detected by SENSOR REGI during paper feed. When the paper size does not
SENSOR
match the print data, an error is sent to the controller. ASSY ADC
BCR
Motor/
Clutch

2.8.2 Control of laser radiation

Laser
The PWBA LD (Laser Diode) converts the image data (electric signal), to laser light
Power
ON/OFF signals. Control
ROS ASSY LV/HVPS

Toner Dispense Control

Voltage/Current
2.8.3 Process control MCU PWB
Control

To ensure a stable image quality, parameters relating to image generation need to be

corrected on a timely basis. Control of the entire print process including the correction
Calculation of
of parameters is called “process control.” Calculation of parameters for
† TC (Toner Content) control compensation value creating ADC toner
patches
Toner patches for TC control are created on the Belt surface to measure the density
by the SENSOR ASSY ADC. According to the measured result, the amount of
toner supply, the amount of laser radiation, and the applied high voltage are Temp. Toner Density
controlled. The execution sequence of the TC control is given on the next page. Life Counter Humidity

SENSOR
PWBA CRUM
HUM&TEMP
Leg_Sec06_064EB

Figure 2-54. Process control Mechanism

OPERATING PRINCIPLES Control 110

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Execution Sequence of TC control 5. Adjustment during a print job

1. Adjustment of SENSOR ASSY ADC Toner in the HOUSING ASSY-DEVE is consumed as print jobs are processed. To
obtain consistent image quality during printing, toner must be supplied to the
The SENSOR ASSY ADC has two LEDs, one for black and the other for color. To
HOUSING ASSY-DEVE. The following control is performed to supply
read each color's patch density, the light emitted from the LED for black is
appropriate amount of toner.
reflected directly to the Common light receiving element, and the light emitted
from the other LED for color does diffuse reflection and also received by the „ PCDC (Pixel Count Dispense Control)
element. The SENSOR ASSY ADC has a built-in solenoid which drives the The amount of toner that will be consumed is predicted from the count value
shutter of the detection window and the part for switching the optical path to the of the image data, that is input from the controller, to control the toner supply
reference plate. amount to the Developer. The supply amount is controlled according to the
Toner Dispense time.
2. Adjustment according to surrounding environment and deterioration of 6. Adjustment after end of printing
parts
„ When a total of 20 or more sheets have been printed, the image quality
Printed image quality is adversely affected by temperature and humidity that adjustments in 1) to 4) are repeated after completion of printing.
change daily, and deterioration of the IBT Belt, drum and other parts. For this
reason, parameters are corrected by capturing temperature/humidity data from
SENSOR HUM & TEMP and printer usage data from CRUM.
3. Creation of toner patches
The output value of HVPS, laser light intensity value, and toner supply amount are
determined from the parameters calculated from various information sources, and
four toner patches, one for each color, are created on the Belt surface.
4. Reading the toner patches
SENSOR ASSY ADC reads the density of the toner patches created on the Belt
surface, and compares the read values with ideal values. When there is a difference
between the read values and the ideal values, the parameters are recalculated and
toner patches are created again.When the printer judges that the toner patches
density is extremely low or high, it performs the following controls.
„ Admix control
When the patch density that is read by SENSOR ASSY ADC is extremely
low, the toner will be supplied into the Developer. This is called “Admix
control”.
„ Sweep control Figure 2-55. Sensor ADC Mechanism
When the patch density that is read by SENSOR ASSY ADC is extremely
high, toner is transferred to the drum, and is scraped off in the Drum Cleaner
to forcibly discharge toner in the Developer. This is called “Sweep control”.

OPERATING PRINCIPLES Control 111

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† Control of Toner Cartridge

Toner Cartridge
1. Detection of Empty status
The judgement of the Empty status of Toner Cartridges is made based on toner Dispense
MOT ASSY MAG
patch density values (read by ADC sensor). When toner patch density is extremely Clutch
low, the printer executes forced supply of toner (Admix operation), and it judges Auger

that the cartridge is empty if the density of toner patches created after the forced
supply is still low.
2. Reset of the Empty status (MCU PWB)
Developer Assy
The printer judges that the empty Toner Cartridge is replaced with a new one when
the power is turned off and back on, and the cover is opened and then closed ROS ASSY
during the Empty status. Then the printer executes forced supply of toner from the
newly attached cartridge.

Leg_Sec06_062FB

Figure 2-56. PCDC Mechanism

OPERATING PRINCIPLES Control 112

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2.8.4 Belt position control 2.8.7 Detection of service life of consumables and
In full color printing, positioning control of the images on the Belt is necessary so that periodical replacement parts
the 4-color toners can be transferred to the same position to enable correct overlay of † Detection of service life of consumables
the 4-color toners. SENSOR TR-0 is an optical reflective sensor, and reacts to the
„ Toner cartridge
silver sticker attached on the Belt for position detection. The output level of the Sensor
The operating time of the Dispense Clutch, that is operated to supply toner
changes at the position of the silver sticker for each one revolution of the Belt. This
from the Toner cartridge, is counted, and the printer detects near-end status of
change is used to control the position of the Belt. cartridges when the counted time reaches a certain level. The printer judges
the end status of cartridges when the toner patch density that is read by the
SENSOR ASSY ADC does not reach the target density during execution of
2.8.5 Adjustment of the FUSER fixing temperature process control.
„ Photoconductor Unit
The temperature of the surface of the Heat Roll is controlled so that the toner images
The service life of the Photoconductor Unit is detected by followings
formed on the paper surface can be appropriately fixed to the paper. The surface
whichever comes first.
temperature of the Heat Roll is detected by a non-contact type Temp Sensor. By
• Number of Drum rotations
turning the Fuser Lamp ON or OFF, it can be adjusted to right temperature.
• Full status of the Waste Toner Box
The judgement of near-end status of the Waste Toner Box is made when the
pixel counter reaches the specified value or when the Full Toner Sensor
2.8.6 FUSER safety circuit detects that the Waste Toner Box is full. Then, the Full status is judged by
the specified amount of pixels counted by the pixel counter after the near-
FUSER ASSY contains a contact type Temp. Sensor for detection of high temperatures
end status.
in addition to the non-contact type Temp. Sensor for temperature control. This Temp.
Sensor is located on the surface of the Heat Roll (the location where paper does not † Detection of service life of periodical replacement parts
contact). When the surface of the Heat Roll reaches an abnormally high temperature, „ HOUSING ASSY-DEVE (Developer Assy)
the Heater Relay in the Fuser Cont is turned OFF, and power supply to Lamp is cut. The printer causes Warning indication when the rest of MOT ASSY MAG's
life becomes less than 1,000 copies in terms of printed sheets of paper.
„ 2ND BTR ASSY
The printer has not a special life counter for 2ND BTR ASSY. The
cumulative number of printed copies printed on the engine status sheet can be
the reference to decide whether the 2ND BTR ASSY reaches the end of its
life.
„ FUSER ASSY
The printer causes Warning (near-end) indication when the rest of FUSER
ASSY's life becomes less than 1,000 copies (the preset life is 100,000 copies)
in terms of printed sheets of paper.

OPERATING PRINCIPLES Control 113

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2.9 Flying-start printing

This printer improves performance when printing full-color images by performing
flying-start printing.
† Sequence
1) The printer starts printing as soon as it finishes to receive Yellow data
of one page.
2) While the Yellow image is being developed and transferred to the IBT
Belt, the next data, Magenta, is received.
3) While the Magenta image is being developed and transferred to the
IBT Belt, the next data, Cyan, is received.
4) While the Cyan image is being developed and transferred to the IBT
Belt, the next data, Black, is received.
5) When the Black image has been developed and transferred to the IBT
Belt, formation of the full color toner image is completed.

OPERATING PRINCIPLES Flying-start printing 114

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2.10 Detection Mechanisms

The following shows a list of detection functions.
Table 2-1. Sensors
Unit Detection Item Availability Detection Method Remarks
MP tray Paper presence detection Available Actuator + Photo-interruptive sensor
Paper size detection Not available --- Enter the paper size from control panel or printer driver
Remaining paper Not available ---
detection
500-sheet cassette Mounting detection at Not available Electrical continuity Not detected unless the main power is turned off
(C1) power ON and back on.
Unit detection Available Electrical continuity
Cassette presence Available Also functions as paper presence. Cassette presence and paper presence are judged by
detection the same sensor.
Paper presence detection Available Actuator + Photo-interruptive sensor
Remaining paper Not available ---
detection
Paper size detection Not available --- Enter the paper size from control panel or printer driver
Duplex Unit Mounting detection at Not available Electrical continuity Not detected unless the main power is turned off
power ON and back on.
Unit detection Available Electrical continuity
Paper ejection from printer Full detection Not available ---
Other OHP sensor Available Reflective photosensor
Temperature detection Available Environment sensor
(reference)
Humidity detection Available Environment sensor
(reference)
Density detection Available Reflective density sensor
(reference)

OPERATING PRINCIPLES Detection Mechanisms 115

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Table 2-1. Sensors

Unit Detection Item Availability Detection Method Remarks
Toner Cartridge New part detection Available CRUM
Presence Detection Available CRUM
Color detection Available CRUM Cannot be incorrectly installed as the location of the
holes are different for each color.
Remaining amount Available Software counter
detection
Near-end detection Available Software counter
End detection Available Software counter
Photoconductor Unit New part detection Available CRUM
(transfer belt/ Unit detection Available CRUM
with Waste Toner Box) Home position detection Optical type (reflective) sensor
Life Waste toner detection Available Photo-interruptive sensor
detection Near-end detection Available Software counter + Detecting waste toner
End detection Available Software counter
FUSER ASSY New part detection Not available --- Reset from the Control Panel.
Unit detection Available Electrical continuity
Life Near-end detection Available Software counter
detection End detection Available Software counter
HOUSING ASSY New part detection Not available --- Reset from the Control Panel.
DEVE Unit detection Not available --- When not installed, “Install xxxx TnrCart” is displayed
on the panel.
Color detection Available Recognized by rib Cannot be incorrectly installed as the location of the
holes are different for each color.
Life Near-end detection Available Software counter
detection End detection Available Software counter
2ND BTR ASSY New part detection Not available ---
Unit detection Not available ---
Life Near-end detection Not available Software counter Not displayed on the panel as it is supposed to be
detection End detection Available Software counter replaced at the same time as the Fuser Assy.

OPERATING PRINCIPLES Detection Mechanisms 116

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2.11 Principle of Electric Circuit Operation 2.11.2 Outline Specifications

The following shows the outline specifications of the controller.
2.11.1 Main Features Table 2-2. List of Controller Outline Specifications
† Host-based controller using ESC/Page-S Printing System as its print language Item Description
† Engine specifications: A4, Color 5 ppm/Black-and-white 25 ppm, 600 dpi, Duplex Controller specifications Host-based controller
printing is available with the option Engine specifications Type A4 4 cycles
† NEC VR4305 CPU is employed Printing speed 5/25 ppm (Color/Monochrome)

† HTC is employed as ASIC with memory, I/O, and an image processor CPU Specifications VR4305
ASIC Memory+I / O HTC
† Equipped with 32MB RAM, and can be expanded up to 256MB with optional
External devices PCC
RAM
(LCD, PicCnt, Network I/F Board, USB
† Parallel (Compatibility/Nibble/ECP) and USB2.0 HS mounted as standard compatible)
interfaces Clock CPU bus 66.7 MHz
† This printer is available with or without Network I/F (100BaseTX/10BaseT) as Memory bus 66.7 MHz
standard. PCC operation 66.7 MHz (CPUCLK division)
† Color image processing functions (CPGI, CRIT) mounted Clock wiring ASIC distribution
Video frequency 27.779 MHz
† Contorl Panel with LCD
USB oscillator 12 MHz
† Bus frequency 66.7 MHz
UART 27.779 MHz (=video frequency)
SSCG Spread Down spread
Device CY25814SZCT
Reset 3.3V (M51957BFP-C61J)
EEPROM Capacity 128 Kbit
Device M95128-WMN6T (SPI)
ROM/RAM RAM capacity 32MB SDRAM (128Mbit*2)
ROM capacity 2MB FLASH
Mounting type ROM / RAM DIMM
OP slot 90 pin RAM_DIMM 1 slot
Max. RAM 256 MB
capacity
Host I/F Parallel Available
USB USB2.0 HS (external S1R72013)
Network Cobalt
Engine I / F UART

OPERATING PRINCIPLES Principle of Electric Circuit Operation 117

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Table 2-2. List of Controller Outline Specifications

Item Description
Panel Specifications 408 panel(with LCD)
Pixel count Specifications PCC+2 external devices
Specified devices UPD617G2-E1-A
SN74AHC2G240HDCT3
PWM Accuracy 6 bit/dot
Device Internal HTC
Plotting method CPGI
Debug environment Connector for serial communication is
on the Controller

Figure 2-57. C567MAIN Circuit Block Diagram

Figure 2-58. Circuitry Block Diagram

OPERATING PRINCIPLES Principle of Electric Circuit Operation 118

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 CHAPTER

3
TROUBLESHOOTING

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3.1 Procedure for troubleshooting 3.1.2 Checking Installation Status

Before starting troubleshooting, make sure that the following conditions are all met.
For efficient troubleshooting, verify the condition of the trouble carefully, and use FIP
(Fault Isolation Procedures) and wiring connection diagrams, and operating principles.

1. The power supply voltage must be within the specification limits.

(Measure the voltage at the wall socket.)
3.1.1 Procedure for troubleshooting
2. The POWER CORD must be free from damage, short circuit or brokenage,
Perform troubleshooting work according to the following flowchart. or miswiring in the POWER CORD.

Verify the condition

3. The printer must be grounded properly.
of the trouble
4. The printer should not be located in a place where it can be exposed to too
high or low temperature, too high or low humidity, or abrupt temperature
Preliminary Check change.
5. The printer should not be located near waterworks, near humidifiers, near
Start heaters or near flames, in a dusty atmosphere, or in a place where the
printer can be exposed to air blasts from an air conditioner.

„ Ch2 “Operating Principles” (p.74) 6. The printer should not be located in a place where volatile or inflammable
Execute FIP
„ Ch7 “7.2 Wiring Connection Diagrams” (p.517) gases are produced.
7. The printer should not be located in a place where it can be exposed to
direct sunlight.
8. The printer must be located in a well-ventilated place.
Check if the trouble
returns to normal
9. The printer must be placed on a solid, stable and flat surface.

Preventative *Clean the Feed Roller. And check if there is any 10. The paper used must conform to the specifications. (Standard paper is
maintenance other part which is likely to cause another error. recommended.)
11. There should be no errors in handling of the printer.
Finish
12. The Regular Replacement Parts must have been replaced every time their
Figure 3-1. Procedure for troubleshooting respective specified number of sheets has been printed.

TROUBLESHOOTING Procedure for troubleshooting 120

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3.1.3 Precautions in Performing Troubleshooting Work 4. When touching any hot surfaces, take care not to burn yourself.
1. Be sure to unplug the POWER CORD before starting troubleshooting work 5. Wear a wrist strap to discharge static electricity from your body.
except when turning power ON is needed.
6. When replacing the PWBA MCU in accordance with the FIP, be sure to
perform “MCU DATA Backup”and “MCU DATA Restore” operations to
W A R N IN G Never touch any live parts unnecessarily when the power is on.
maintain the set of information specific to the subject engine.
The power switch/inlet part of the LVPS is alive even when the
power switch is turned OFF. Take care not to touch any live parts. C A U T IO N Refer to “4.11.5 PWBA MCU” (p.404) for all the details about the
PWBA MCU replacement.

2. If you perform work with the power turned ON, covers removed, and the
interlock and safety switches turned ON, be sure to disconnect the ROS
ASSY connector (P/J601), except when its connection is required.

W A R N IN G If you perform work with the power turned ON, covers removed,
and the interlock and safety switches turned ON, there is a
danger of the laser beam being emitted from ROS ASSY. Be sure
to disconnect the ROS ASSY connector (P/J601), except when its
connection is required.

3. If you perform work with the power turned ON, covers removed, and the
interlock and safety switches turned ON, be careful of a high voltage from
HVPS.

W A R N IN G If you perform work with the power turned ON, covers removed,
and the interlock and safety switches turned ON, never touch
HVPS and any other high voltage output part as a high voltage
may be output from HVPS.

TROUBLESHOOTING Procedure for troubleshooting 121

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3.1.4 Notes on Using FIP 6. When, for example, “P/J1 ↔ P/J2” is indicated in FIP for the voltage
check, check for the all relating terminals between “P/J1” and “P/J2” with
1. The troubleshooting method described here assumes that there is no
reference to the Connection Diagram.
malfunction in the printer controller (PWBA ESS). If you cannot fix a
problem even by following the troubleshooting procedure, replace the 7. Taking “P/J1-2PIN ↔ P/J3-4PIN” as an example, the minus side “P/J3-
printer controller with a normal one and then follow the same procedure. If 4PIN” is AG (Analog Ground), SG (Signal Ground), or RTN (Return).
you cannot recover the printer from the trouble even with the printer Therefore it is possible to connect to another AG, SG, or RTN pin as the
controller replaced, replace the “Possible parts that caused the error” minus side instead of “P/J3-4PIN”. Before doing so, check that each AG-
shown in FIP and related parts with new ones in order one by one, and to-AG, SG-to-SG, or RTN-to-RTN has continuity properly. Be careful not
repeat operation checks. to connect to a wrong pin since the level of AG, SG and RTN are different
from each other.
2. Some normal parts such as MCU, LV/HVPS, FUSER ASSY, 2ND BTR
ASSY may be required as FIP troubleshooting tools to identify the cause of 8. When measuring the voltage, perform measurement with the
the trouble. So, you need to have those spares in advance. Photoconductor Unit, 2ND BTR ASSY, and paper cassette loaded, covers
closed, and power ON.
3. Be sure to unplug the POWER CORD before starting troubleshooting work
except when turning power ON is needed. Never touch any live parts 9. All voltage values given in the FIP are approximate values. So actually
unnecessarily with the power cord connected. measured values should not be completely the same as those given in the
FIP.
4. Conventions used to represent connectors are as follows:
“P/J12” = The connector (P/J12) in a connected state. 10. Note that FIP does not provide any description on removal of parts which
“P12” = The plug side in connector (P/J12) disconnected state. (except are supposed to be removed to remove the target part, and the procedures.
when the jack is directly mounted on the board)
11. Any parts listed in “Possible parts that caused the error” in the FIP are
“J12” = The jack side in connector (P/J12) disconnected state. (except
regarded as the source of the trouble and signifies that the parts or the
when the jack is directly mounted on the board)
assemblies (HIGH ASSY) containing those parts should be replaced with
5. When, for example, “P/J1-2PIN ↔ P/J3-4PIN” is indicated in FIP for the normal ones one by one, and checking should be repeated.
voltage check, set the plus side of a measuring tool to “2PIN” on “P/J1”
12. In the FIP, the optional paper feeder of the printer is called “Tray1”.
and set the minus side of the tool to “4PIN” on “P/J3”.
13. FIP may contain descriptions that distinguish between certain
specifications. Be sure to follow such instructions properly to remedy the
problem.

TROUBLESHOOTING Procedure for troubleshooting 122

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 Power ON

TROUBLESHOOTING
EPSON AcuLaser C1100
When Deve Home Position
Sensor Error occurs:
Yes Error recovery processing
→ Go to “FIP-1.46” Error displayed?
(See “List of Errors and Warnings”)

No

When an ID Error occurs:

XERO → Go to “FIP-1.9”
Y Toner → Go to “FIP-1.13”
M Toner → Go to “FIP-1.17” Rotary operation check and When IBT CLN Fail occurs
C Toner → Go to “FIP-1.21” Home Position correction → Go to “FIP-1.54”
K Toner → Go to “FIP-1.25” (8 secs)

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MOT ASSY ROT operation*1

Fuser warm-up
3.1.5 Warming-Up Flowchart at Power-ON
(time out within 45 secs)
CRUM check and ADC TC target
density value correction*2(16 secs)
Heater red-hot

When Deve Home position IBT Brush Motor operation

Sensor Error occurs:
→ Go to “FIP-1.46”

Yes Fuser temperature

at Power ON lower than the Fuser
temperature threshold
When IBT CLN Fail occurs
value? → Go to “FIP-1.61”
No

Yes Detected value

of temperature sensor of a fixed
difference with value at previous
printing?

No
PLC sequence*3

Procedure for troubleshooting

(30 secs or more)
MOT ASSY ROT operation*1

Figure 3-2. Warming-up flowchart at power-on

BTR/IBT cleaning
(11 secs)
The following flowchart (outline) shows the printer’s warm-up operation, from power-on to when the printer is ready to print.

IBT Brush Motor operation

Total 37 to 840 seconds

(depending on ambient environment)
*1 : Rotary rotates 360º plus a little more during No End of cleaning
Home Position correction and 720º during and FUSER warm-up?
execution of the PLC sequence.

*2 : By ADC TC correction, the target density Yes

value of TC is being corrected according
to the developing machine drive time.
Ready (ready to print)
*3 : The PLC sequence creates and reads ADC Leg_Sec001_031FA
patches to adjust toner and image density.

123
Revision B
 EPSON AcuLaser C1100 Revision B

3.2 FIP 3.2.2 FIP Procedure

Ask the operator about the conditions of the trouble.

3.2.1 Outline Was the operator operating the printer correctly?
Y N
FIP is provided as the first step to identify the cause of trouble. FIP is a guide for
Teach the operator the right way.
proceeding with troubleshooting while checking error codes and for various other
symptoms of trouble.
Is an error code displayed on the panel?
Y N
Is the printer jammed?
Y N
Is it an image quality problem?
Y N
Is the printer making abnormal noise?
Y N

Perform troubleshooting with reference to

“7.2 Wiring Connection Diagrams” (p.517).

Fix the trouble with reference to

“3.5 Abnormal Noise-related Trouble” (p.267).

Fix the trouble with reference to

“3.4 Printing Quality-related Trouble” (p.242).

Ask the operator again to verify the condition at the time of jamming, and
execute a print job in the same conditions. Is the printer jammed again?
Y N
Recheck the trouble condition, and execute preventive maintenance
by using “7.2 Wiring Connection Diagrams” (p.517), doing proper
adjustment when disassembled, or according to various information.

Write the Jam code down.

Fix the trouble with reference to the FIP.

Have the F/W version of main controller and mechanical controller been updated ?

Fix the trouble with reference to the FIP.

TROUBLESHOOTING FIP 124

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3.3 FIP according to the printer message Table 3-1. List of Paper Jam Error

Panel Jammed
Description See FIP
3.3.1 List of Errors and Warnings Message Location
Jam LC, G The SENSOR T/R did not turn ON within the specified 26
ERROR LIST RELATED TO PAPER JAM (1) time from SOLENOID FEED - ON. (p.159)
Jam MP, E The SENSOR REGI did not turn ON within the 27
FUSER ASSY (2) specified time from SOLENOID PICK UP - ON.
Jam D, E (p.162)
Exit Sensor (Inside FUSER ASSY) Jam E The SENSOR REGI did not turn ON within the 28
(3) specified time from SENSOR T/R - ON. (p.165)
DUPLEX ASSY
Jam E The SENSOR REGI did not turn OFF within the 29
SENSOR UPPER PATH (3)(4) specified time from CLUTCH ASSY REGI - ON.
Jam D, E (p.168)
SENSOR FUSER IN Jam E, F The Exit Sensor did not turn ON and SENSOR FUSER
30
Jam D, E, F (4)(5) IN turned OFF within the specified time from
CLUTCH ASSY REGI - ON. (p.170)
2ND BTR ASSY
Jam C, E, F The Exit Sensor did not turn ON and SENSOR FUSER
CLUTCH ASSY REGI 31
Jam D, E, F (4)(5) IN turned ON within the specified time from CLUTCH
ASSY REGI - ON. (p.174)

Check SENSOR OHP detected media other than OHP at the

SENSOR LOW PATH
32
Transparency (3) OHP setting or detected OHP at a setting other than
OHP. (p.178)

SENSOR REGI Jam E The SENSOR FUSER IN did not turn ON within the 33
SENSOR OHP (4) specified time from CLUTCH ASSY REGI - ON.
Jam D, E (p.179)

SOLENOID PICK UP Jam C Exit Sensor did not turn OFF within the specified time 34
(4)(5)(6) from SENSOR REGI - OFF.
Jam D (p.182)
SENSOR T/R
Jam D, E, SENSOR REGI did not turn ON within the specified 35
DM (8)(9)(3) time from DUPLEX load signal (MCU)
SOLENOID FEED
(p.184)
Jam DM The SENSOR LOW PATH did not turn ON within the 36
Leg_Sec001_020FA (8) specified time from SENSOR UPPER PATH - ON. (p.187)
Figure 3-3. Jammed Location
Jam C SENSOR UPPER PATH did not turn ON within the 37
(7) specified time from Exit Sensor - OFF.
Jam D (p.189)

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 EPSON AcuLaser C1100 Revision B

Table 3-1. List of Paper Jam Error

Panel Jammed
Description See FIP
Message Location
Jam DM --- SENSOR LOW PATH was ON at Power ON or when
I/L was closed. (Static Jam)
Jam C --- SENSOR UPPER PATH was ON at Power ON or
Jam D when I/L was closed. (Static Jam)

Jam LC, G --- SENSOR T/R was ON at Power ON or when I/L was
closed. (Static Jam)
Jam E --- SENSOR OHP was ON at Power ON or when I/L was 38
Jam D, E closed. (Static Jam) (p.191)
Jam E --- SENSOR REGI was ON at Power ON or when I/L was
Jam D, E closed. (Static Jam)

Jam C, E, F --- SENSOR FUSER IN was ON at Power ON or when I/

Jam D, F L was closed. (Static Jam)

Jam C --- Exit Sensor was ON at Power ON or when I/L was

Jam D closed. (Static Jam)

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 EPSON AcuLaser C1100 Revision B

OTHER ERRORS AND WARNINGS

Table 3-2. List of Errors and Warnings

Class Panel Message Error LED Description See FIP

Y Toner Low --- The toner supply time of the Yellow toner cartridge has reached the preset time. The printer, however, can be operated. 72 (p.231)
M Toner Low --- The toner supply time of the Magenta toner cartridge has reached the preset time. The printer, however, can be operated. 73 (p.232)
Warning

C Toner Low --- The toner supply time of the Cyan toner cartridge has reached the preset time. The printer, however, can be operated. 74 (p.233)
K Toner Low --- The toner supply time of the Black toner cartridge has reached the preset time. The printer, however, can be operated. 75 (p.234)
Worn Photoconductor --- SENSOR TNER FULL of the Waste Toner Box has detected a toner full state. The printer, however, can operated. 76 (p.235)
--- The number of drum rotations has exceeded the specified value. The printer, however, can be operated. 77 (p.236)
Install Y TnrCart ON The Yellow toner cartridge is not mounted. 1 (p.134)
Install M TnrCart ON The Magenta toner cartridge is not mounted. 2 (p.135)
Install C TnrCart ON The Cyan toner cartridge is not mounted. 3 (p.136)
Install K TnrCart ON The Black toner cartridge is not mounted. 4 (p.137)
Install Photocondctr ON The photoconductor unit is not mounted. 5 (p.138)
Photocondctr Trouble ON A communication error occurred between PWBA MCU and ANTENNA ASSY (CRUM XERO). 6 (p.139)
Error

An error occurred when writing data to ANTENNA ASSY (CRUM XERO). 7 (p.140)
A photoconductor unit with a memory of different specification device is attached. 8 (p.141)
Wrong Photocondctr ON A drum cartridge of a different specification is attached. 9 (p.142)
TonerCart Error Y ON A communication error occurred between PWBA MCU and ANTENNA CTRG (CRUM CTRIG). 10 (p.143)
An error occurred when writing data to ANTENNA CTRG (CRUM CTRIG). 11 (p.144)
A Yellow toner cartridge with a memory of different specification device is attached. 12 (p.145)
Wrong Toner Y ON A Yellow toner cartridge of a different specification is attached. 13 (p.146)

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 EPSON AcuLaser C1100 Revision B

Table 3-2. List of Errors and Warnings

Class Panel Message Error LED Description See FIP

TonerCart Error M ON A communication error occurred between PWBA MCU and ANTENNA CTRG (CRUM CTRIG). 14 (p.147)
An error occurred when writing data to ANTENNA CTRG (CRUM CTRIG). 15 (p.148)
A Magenta toner cartridge with a memory of different specification device is attached. 16 (p.149)
Wrong Toner M ON A Magenta toner cartridge of a different specification is attached. 17 (p.150)
TonerCart Error C ON A communication error occurred between PWBA MCU and ANTENNA CTRG (CRUM CTRIG). 18 (p.151)
An error occurred when writing data to ANTENNA CTRG (CRUM CTRIG). 19 (p.152)
A Cyan toner cartridge with a memory of different specification device is attached. 20 (p.153)
Wrong Toner C ON A Cyan toner cartridge of a different specification is attached. 21 (p.154)
TonerCart Error K ON A communication error occurred between PWBA MCU and ANTENNA CTRG (CRUM CTRIG). 22 (p.155)
An error occurred when writing data to ANTENNA CTRG (CRUM CTRIG). 23 (p.156)
A Black toner cartridge with a memory of different specification device is attached. 24 (p.157)
Error

Wrong Toner K ON A Black toner cartridge of a different specification is attached. 25 (p.158)

Irregular Density ON The Coverage for 500msec of the image exceeds the limit. 50 (p.205)
Replace Toner Y ON It is time to replace the Yellow toner cartridge. 59 (p.217)
Replace Toner M ON It is time to replace the Magenta toner cartridge. 60 (p.218)
Replace Toner C ON It is time to replace the Cyan toner cartridge. 61 (p.219)
Replace Toner K ON It is time to replace the Black toner cartridge. 62 (p.220)
Replace Photocondctr ON It is time to replace the photoconductor unit. 63 (p.221)
Blink The number of drum rotations has exceeded the specified value. 77 (p.236)
A Open ON COVER FRONT ASSY U is open. 64 (p.222)
E Open ON CHUTE ASSY-REAR is open. 65 (p.223)
F Open ON CHUTE ASSY-FSR is open. 66 (p.224)
C Open ON COVER FUSER is open. 67 (p.225)

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 EPSON AcuLaser C1100 Revision B

Table 3-2. List of Errors and Warnings

Class Panel Message Error LED Description See FIP

G Open ON The Cover of Tray 1 is open. 68 (p.226)
DM Open ON Duplex Cover is open. 69 (p.227)
Eeeor

D Open ON Duplex is open. 70 (p.228)

B Open ON COVER TOP is open. 71 (p.229)

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 EPSON AcuLaser C1100 Revision B

3.3.2 List of Service Request

Table 3-3. List of Service Request

Class Panel Messaeg Description See FIP

Service Req E510 ROS Motor Failure
44 (p.197)
PWBA MCU could not receive signals output from SOS Sensor in ROS within the specified time.
Service Req E511 TR0 Failure
43 (p.195)
PWBA MCU could not receive signals output from SENSOR TR-0 (TR0 Sensor) at the specified timing.
Service Req E513 NVRAM Error
42 (p.194)
An error occurred in NVRAM on PWBA MCU.
Service Req E514 PAGE Timeout
41 (p.194)
The PAGEC/PAGE signal was not received within 60sec after transmitting PFA.
Service Req E516 Communication Error Duplex
40 (p.193)
A communication error occurred between PWBA MCU and Duplex.
Engine Related (E)

Service Req E517 Communication Error Feeder

39 (p.192)
A communication error occurred between PWBA MCU and Feeder.
Service Req E520 BTR 2 Advance Error
52 (p.208)
The 2nd BTR Retract Sensor does not turn ON within the specified time.
Service Req E521 BTR 2 Error
51 (p.206)
The input of 2nd BTR Retract Sensor does not change when 2nd BTR is initialized.
Service Req E523 PCDC Error
49 (p.204)
PCDC is not functioning normally.
Service Req E524 Low Density
48 (p.202)
The output value of SENSOR ASSY ADC (ADC Sensor) is below the specified value.
Service Req E525 High Density
47 (p.200)
The output value of SENSOR ASSY ADC (ADC Sensor) exceeds the specified value.
Service Req E526 ADC Contamination
46 (p.199)
SENSOR ASSY ADC (ADC Sensor) error

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 EPSON AcuLaser C1100 Revision B

Table 3-3. List of Service Request

Class Panel Messaeg Description See FIP

Service Req E527 Deve Home Position Sensor Error
PWBA MCU could not receive signals output from Rotary Home Position Sensor within the specified time after rotation of Rotary 45 (p.198)
Developer.
Service Req E530 Humidity Sensor Error
55 (p.211)
When the Input from SENSOR HUM & TEMP is out of specification.
Service Req E533 Temp Sensor Error
54 (p.211)
SENSOR HUM & TEMP detected a temperature below -7°C or over 55°C.
Service Req E537 Fuser Fail
• Control Thermistor detected a temperature exceeding the specified temperature.
Safety Thermistor detected a temperature exceeding the specified temperature.
Engine Related (E)

• The Control Thermistor did not detect a Ready even though the specified time elapsed from Main Lamp ON at Warm Up.
• The Main Lamp continues to stay lit even after time specified for the Main Lamp elapsed after the Control Thermistor detected a 53 (p.210)
Ready.
• The Control Thermistor detected a temperature below the specified temperature even after the specified time elapsed from Main
Lamp ON at Warm Up.
• The latch lever of FUSER ASSY is set incorrectly.
Service Req E542 IBT CLN Fail
58 (p.216)
SENSOR IBT RETRACT cannot detect Advance/Retract of CAM ASSY-IBT CL.
Service Req E546 Duplex Motor Failure
The MOTOR ASSY DUP (Lower Roll Motor) or MOTOR ASSY DUP INV (Upper Roll Motor) of Duplex is not rotating at the 57 (p.214)
specified speed.
Service Req E547 Feed Motor Failure
56 (p.212)
DRIVE ASSY FEED (Feed Motor) of the Feeder is not rotating at the specified speed.
Service Req E998 Engine Communication Error
78 (p.237)
Acommunication error between the controller and the PWBA MCU via the video I/F occured

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 EPSON AcuLaser C1100 Revision B

Table 3-3. List of Service Request

Class Panel Messaeg Description See FIP

Service Req C0017 CPU error (undefined interruption)
Service Req C0081 CPU error (TLB modification exception)
Service Req C0082 CPU error (TLB miss exception [Load/Fetch])
Service Req C0083 CPU error (TLB miss exception [Store])
Service Req C0084 CPU error (address error exception [Load/Fetch])
Service Req C0085 CPU error (address error exception [Store])
Service Req C0086 CPU error (bus error exception [Fetch])
Service Req C0087 CPU error (bus error exception [Load/Store])
Controller Related (C)

Service Req C0088 CPU error (SYSCALL exception)

Service Req C0089 CPU error (Break exception)
Service Req C0090 CPU error (reserving command exception) C1 (p.239)
Service Req C0091 CPU error (unused coprocessor exception)
Service Req C0092 CPU error (FPU exception)
Service Req C0093 CPU error (TLB exception)
Service Req C0094 CPU error (XTLB exception)
Service Req C0095 CPU error (cache exception)
Service Req C0096 CPU error (Trap exception)
Service Req C0097 CPU error (FPU exception)
Service Req C0098 CPU error (watch exception)
Service Req C0128 ~ 0254 CPU error (undefined trap)
Service Req C0255 CPU error (NMI exception)

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 EPSON AcuLaser C1100 Revision B

Table 3-3. List of Service Request

Class Panel Messaeg Description See FIP

Service Req C0256 CPU error (divide by 0)
Service Req C0257 CPU error (arithmetic overflow)
Service Req C0258 CPU error (break occurrence) C1 (p.239)
Service Req C0800 IPL error (controller defect)
Service Req C0998 Engine communication error (only when power-on)
Service Req C0999 Engine flash ROM has no program data
Service Req C1002 Standard RAM error (standard size is undefined, etc.) C2 (p.240)
Service Req C1010 Verification error
Service Req C1020 RAM error (slot 0)
C3 (p.240)
Service Req C1021 RAM error (slot 1)
Controller Related (C)

Service Req C1120 ROM checksum error (bit 0 to 7) (program)

Service Req C1121 ROM checksum error (bit 8 to 15) (program)
C4 (p.241)
Service Req C1122 ROM checksum error (bit 16 to 23) (program)
Service Req C1123 ROM checksum error (bit 24 to 31) (program)
Service Req C1200 EEPROM writing error
Service Req C1210 EEPROM writing times limit
Service Req C1400 Engine initialization error
Service Req C1500 CCNV hardware error
Service Req C1550 Initialization hardware error for SRAM for compression C1 (p.239)
Service Req C1600 Video series hardware error (including PWM IC calibration error)
Service Req C1610 Video series hardware error (VCNV error)
Service Req C1800 Illegal SPD
Service Req C1999 Other hardware errors
Service Req C2000 Software error C5 (p.241)

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 EPSON AcuLaser C1100 Revision B

3.3.3 Error Code FIP Step Check Yes No

Check after replacement of Toner Cartridge Y Go to Step[7]. End of
3.3.3.1 Engine related error 6 Replace Toner Cartridge Y. procedure
Does the error recur when the power is turned
FIP-1 ON?

† Panel Message 7 ANTENNA CTRG operation check Go to Step[8]. Go to Step[9].

Disconnect and then re-connect P/J415 on
„ Install Y TnrCart PWBA MCU.
† Possible parts that caused the error Does the error recur when the power is turned
ON?
„ Toner Cartridge Y „ HOUSING ASSY-DEVE Y Continuity check of HARNESS ASSY MAIN Go to Step[9]. Repair broken
„ ANTENNA CTRG „ HARNESS ASSY MAIN 8 Disconnect the P/J415 from PWBA MCU. or shorted part.
„ ANTENNA ASSY-CTRG „ PWBA MCU Do all of the wiring below have normal
continuity?
† Troubleshooting J415-1 ↔ J106-2
J415-2 ↔ J106-1
Step Check Yes No
Check after replacement of HOUSING Go to Step[10]. End of
1 Model check of Toner Cartridge Y Go to Step[2]. Replace with a 9 ASSY-DEVE Y procedure
Is a Toner Cartridge Y that complies with the Toner Cartridge
Replace HOUSING ASSY-DEVE Y (p.383)
specifications attached? Y that complies
with the Does the error recur when the power is turned
specifications. ON?
Check after replacement of ANTENNA Replace PWBA End of
2 Attachment check of Toner Cartridge Y
Is the Toner Cartridge Y attached correctly?
Go to Step[3]. After re-
attachment
10 ASSY-CTRG or ANTENNA CTRG MCU. (p.404) procedure
Go to Step[3]. Replace ANTENNA ASSY-CTRG or
ANTENNA CTRG. (p.379) or (p.380)
Does the error recur even if the power is Go to Step[4]. End of
3 turned ON/OFF several times? procedure
Does the error recur when the power is turned
ON?
Attachment check of HOUSING ASSY- Go to Step[5]. After re-
4 DEVE Y attachment
Is the HOUSING ASSY-DEVE Y attached Go to Step[5].
correctly?
Does the error recur even if the power is Go to Step[6]. End of
5 turned ON/OFF several times? procedure

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 EPSON AcuLaser C1100 Revision B

FIP-2 Step Check Yes No

ANTENNA CTRG operation check Go to Step[8]. Go to Step[9].
† Panel Message 7 Disconnect and then re-connect P/J415 on
„ Install M TnrCart PWBA MCU.
Does the error recur when the power is turned
† Possible parts that caused the error ON?
„ Toner Cartridge M „ HOUSING ASSY-DEVE M Continuity check of HARNESS ASSY MAIN Go to Step[9]. Repair broken
„ ANTENNA CTRG „ HARNESS ASSY MAIN
8 Disconnect the P/J415 from PWBA MCU. or shorted part.
„ ANTENNA ASSY-CTRG „ PWBA MCU Do all of the wiring below have normal
continuity?
† Troubleshooting J415-1 ↔ J106-2
J415-2 ↔ J106-1
Step Check Yes No
Check after replacement of HOUSING Go to Step[10]. End of
Model check of Toner Cartridge M Go to Step[2]. Replace with a 9 ASSY-DEVE M procedure
1 Is a Toner Cartridge M that complies with the Toner Cartridge Replace HOUSING ASSY-DEVE M. (p.383)
specifications attached? M that complies Does the error recur when the power is turned
with the ON?
specifications.
Check after replacement of ANTENNA Replace PWBA End of
2 Attachment check of Toner Cartridge M Go to Step[3]. After re- 10 ASSY-CTRG or ANTENNA CTRG MCU. (p.404) procedure
Is the Toner Cartridge M attached correctly? attachment
Replace ANTENNA ASSY-CTRG or
Go to Step[3]. ANTENNA CTRG. (p.379) or (p.380)
Does the error recur even if the power is Go to Step[4]. End of Does the error recur when the power is turned
3 turned ON/OFF several times? procedure ON?
Attachment check of HOUSING ASSY- Go to Step[5]. After re-
4 DEVE M attachment
Is the HOUSING ASSY-DEVE M attached Go to Step[5].
correctly?
Does the error recur even if the power is Go to Step[6]. End of
5 turned ON/OFF several times? procedure
Check after replacement of Toner Cartridge M Go to Step[7]. End of
6 Replace Toner Cartridge M. procedure
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-3 Step Check Yes No

ANTENNA CTRG operation check Go to Step[8]. Go to Step[9].
† Panel Message 7 Disconnect and then re-connect P/J415 on
„ Install C TnrCart PWBA MCU.
Does the error recur when the power is turned
† Possible parts that caused the error ON?
„ Toner Cartridge C „ HOUSING ASSY-DEVE C Continuity check of HARNESS ASSY MAIN Go to Step[9]. Repair broken
„ ANTENNA CTRG „ HARNESS ASSY MAIN
8 Disconnect the P/J415 from PWBA MCU. or shorted part.
„ ANTENNA ASSY-CTRG „ PWBA MCU Do all of the wiring below have normal
continuity?
† Troubleshooting J415-1 ↔ J106-2
J415-2 ↔ J106-1
Step Check Yes No
Check after replacement of HOUSING Go to Step[10]. End of
Model check of Toner Cartridge C Go to Step[2]. Replace with a 9 ASSY-DEVE C procedure
1 Is a Toner Cartridge C that complies with the Toner Cartridge Replace HOUSING ASSY-DEVE C. (p.383)
specifications attached? C that complies Does the error recur when the power is turned
with the ON?
specifications.
Check after replacement of ANTENNA Replace PWBA End of
2 Attachment check of Toner Cartridge C Go to Step[3]. After re- 10 ASSY-CTRG or ANTENNA CTRG MCU. (p.404) procedure
Is the Toner Cartridge C attached correctly? attachment
Replace ANTENNA ASSY-CTRG or
Go to Step[3]. ANTENNA CTRG. (p.379) or (p.380)
Does the error recur even if the power is Go to Step[4]. End of Does the error recur when the power is turned
3 turned ON/OFF several times? procedure ON?
Attachment check of HOUSING ASSY- Go to Step[5]. After re-
4 DEVE C attachment
Is the HOUSING ASSY-DEVE C attached Go to Step[5].
correctly?
Does the error recur even if the power is Go to Step[6]. End of
5 turned ON/OFF several times? procedure
Check after replacement of Toner Cartridge C Go to Step[7]. End of
6 Replace Toner Cartridge C. procedure
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-4 Step Check Yes No

ANTENNA CTRG operation check Go to Step[8]. Go to Step[9].
† Panel Message 7 Disconnect and then re-connect P/J415 on
„ Install K TnrCart PWBA MCU.
Does the error recur when the power is turned
† Possible parts that caused the error ON?
„ Toner Cartridge K „ HOUSING ASSY-DEVE K Continuity check of HARNESS ASSY MAIN Go to Step[9]. Repair broken
„ ANTENNA CTRG „ HARNESS ASSY MAIN
8 Disconnect the P/J415 from PWBA MCU. or shorted part.
„ ANTENNA ASSY-CTRG „ PWBA MCU Do all of the wiring below have normal
continuity?
† Troubleshooting J415-1 ↔ J106-2
J415-2 ↔ J106-1
Step Check Yes No
Check after replacement of HOUSING Go to Step[10]. End of
Model check of Toner Cartridge K Go to Step[2]. Replace with a 9 ASSY-DEVE K procedure
1 Is a Toner Cartridge K that complies with the Toner Cartridge Replace HOUSING ASSY-DEVE K. (p.383)
specifications attached? K that complies Does the error recur when the power is turned
with the ON?
specifications.
Check after replacement of ANTENNA Replace PWBA End of
2 Attachment check of Toner Cartridge K Go to Step[3]. After re- 10 ASSY-CTRG or ANTENNA CTRG MCU. (p.404) procedure
Is the Toner Cartridge K attached correctly? attachment
Replace ANTENNA ASSY-CTRG or
Go to Step[3]. ANTENNA CTRG. (p.379) or (p.380)
Does the error recur even if the power is Go to Step[4]. End of Does the error recur when the power is turned
3 turned ON/OFF several times? procedure ON?
Attachment check of HOUSING ASSY- Go to Step[5]. After re-
4 DEVE K attachment
Is the HOUSING ASSY-DEVE K attached Go to Step[5].
correctly?
Does the error recur even if the power is Go to Step[6]. End of
5 turned ON/OFF several times? procedure
Check after replacement of Toner Cartridge Go to Step[7]. End of
6 Replace Toner Cartridge K. procedure
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-5 Step Check Yes No

Check after replacement of Go to Step [6]. End of
† Panel Message 5 Photoconductor Unit procedure
„ Install Photocondctr Replace Photoconductor Unit.
Does the error recur when the power is turned
† Possible parts that caused the error ON?
„ Photoconductor Unit „ HARNESS-ASSY XERO Check after replacement of GUIDE CRU Replace PWBA End of
„ GUIDE CRU ASSY D or ANTENNA ASSY „ PWBA MCU
6 ASSY D or ANTENNA ASSY MCU. (p.404) procedure
Replace GUIDE CRU ASSY D or
† Troubleshooting ANTENNA ASSY. (p.362) or (p.365)
Does the error recur when the power is turned
Step Check Yes No ON?
Model check of Photoconductor Unit Go to Step[2]. Replace with a
1 Is a Photoconductor Unit that complies with Photoconductor
the specifications attached? Unit that
complies with
the
specifications.
Attachment check of Photoconductor Unit Go to Step[3]. End of
2 Re-attach Photoconductor Unit. procedure
Does the error recur when the power is turned
ON?
ANTENNA CTRG operation check Go to Step[4]. Go to Step[5].
3 Disconnect and the re-connect P/J416 on
PWBA MCU.
Does the error recur when the power is turned
ON?
Continuity check of HARNESS-ASSY XERO Go to Step[5]. Replace
4 Disconnect the P/J416 from PWBA MCU. HARNESS-
Do all of the wiring below have normal ASSY XERO.
continuity?
J416-4 ↔ J109-2
J416-5 ↔ J109-1

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 EPSON AcuLaser C1100 Revision B

FIP-6 Step Check Yes No

Continuity check of HARNESS-ASSY XERO Go to Step [7]. Replace
† Panel Message 6 Disconnect P/J416 from PWBA MCU. HARNESS-
„ Photocondctr Trouble Do all of the wiring below have normal ASSY XERO.
continuity.
† Possible parts that caused the error
J416-4 ↔ J109-2
„ Photoconductor Unit „ GUIDE CRU ASSY D or ANTENNA ASSY J416-5 ↔ J109-1
„ HARNESS-ASSY XERO „ PWBA MCU Check after replacement of GUIDE CRU Go to Step [8]. End of
„ LV/HVPS
7 ASSY D or ANTENNA ASSY procedure
Replace GUIDE CRU ASSY D or
† Troubleshooting ANTENNA ASSY. (p.362) or (p.365)
Does the error recur when the power is turned
Step Check Yes No ON?
Model check of Photoconductor Unit Go to Step [2]. Replace with a Power supply check to PWBA MCU Replace PWBA Go to Step [9].
1 Is a Photoconductor Unit that complies with Photoconductor 8 Are the following power voltages being MCU. (p.404)
the specifications attached? Unit that supplied to PWBA MCU from LV/HVPS?
complies with J410-1 ↔ J410-2: 3. 3 VDC
the
J410-3 ↔ J410-4: 5 VDC
specifications.
J410-5/6 ↔ J410-7/8: 24 VDC
Attachment check of Photoconductor Unit Go to Step [3]. End of
2 Re-attach Photoconductor Unit. procedure 9 Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Does the error recur when the power is turned
J502 from LV/HVPS.
ON?
Do all of the wiring below have normal
Check after replacement of Go to Step [4]. End of
3 Photoconductor Unit procedure
continuity?
J410-1 ↔ J502-1
Replace Photoconductor Unit. J410-2 ↔ J502-2
Does the error recur when the power is turned J410-3 ↔ J502-3
ON?
J410-4 ↔ J502-4
Check of ANTENNA ASSY Clean Go to Step [6]. J410-5 ↔ J502-5
4 Is ANTENNA ASSY dirty and damaged? ANTENNA J410-6 ↔ J502-6
ASSY, and then
J410-7 ↔ J502-7
proceed to step
[5]. J410-8 ↔ J502-8

Does the error recur when the power is Go to Step [6]. End of
5 turned ON? procedure

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 EPSON AcuLaser C1100 Revision B

FIP-7 Step Check Yes No

Check after replacement of GUIDE CRU Go to Step [7]. End of
† Panel Message 6 ASSY D or ANTENNA ASSY procedure
„ Photocondctr Trouble Replace GUIDE CRU ASSY D or
ANTENNA ASSY. (p.362) or (p.365)
† Possible parts that caused the error Does the error recur when the power is turned
ON?
„ Photoconductor Unit „ GUIDE CRU ASSY D or ANTENNA ASSY
„ HARNESS-ASSY XERO „ PWBA MCU 7 Power supply check to PWBA MCU Replace PWBA Go to Step [8].
Are the following power voltages being MCU. (p.404)
„ LV/HVPS
supplied to PWBA MCU from LV/HVPS?
† Troubleshooting J410-1 ↔ J410-2: 3. 3 VDC
J410-3 ↔ J410-4: 5 VDC
Step Check Yes No J410-5/6 ↔ J410-7/8: 24 VDC
Attachment check of Photoconductor Unit Go to Step [2]. End of Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
1 Re-attach Photoconductor Unit. procedure 8 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Does the error recur when the power is turned J502 from LV/HVPS.
ON? Do all of the wiring below have normal
continuity?
Check after replacement of Go to Step [3]. End of
2 Photoconductor Unit procedure J410-1 ↔ J502-1
Replace Photoconductor Unit. J410-2 ↔ J502-2
Does the error recur when the power is turned J410-3 ↔ J502-3
ON? J410-4 ↔ J502-4
J410-5 ↔ J502-5
Check of ANTENNA ASSY Clean Go to Step [5].
3 Is ANTENNA ASSY dirty and damaged? ANTENNA J410-6 ↔ J502-6
ASSY, and then J410-7 ↔ J502-7
proceed to step J410-8 ↔ J502-8
[4].
Does the error recur when the power is Go to Step [5]. End of
4 turned ON? procedure
Continuity check of HARNESS-ASSY XERO Go to Step [6]. Replace
5 Disconnect P/J416 from PWBA MCU. HARNESS-
Do all of the wiring below have normal ASSY XERO.
continuity?
J416-4 ↔ J109-2
J416-5 ↔ J109-1

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 EPSON AcuLaser C1100 Revision B

FIP-8 Step Check Yes No

Power supply check to PWBA MCU Replace PWBA Go to Step [5].
† Panel Message 4 Are the following power voltages being MCU. (p.404)
„ Photocondctr Trouble supplied to PWBA MCU from LV/HVPS?
J410-1 ↔ J410-2: 3. 3 VDC
† Possible parts that caused the error
J410-3 ↔ J410-4: 5 VDC
„ Photoconductor Unit „ PWBA MCU J410-5/6 ↔ J410-7/8: 24 VDC
„ HARNESS ASSY MAIN „ LV/HVPS Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
5 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
† Troubleshooting J502 from LV/HVPS.
Do all of the wiring below have normal
Step Check Yes No continuity?
Model check of Photoconductor Unit Go to Step [2]. Replace with a J410-1 ↔ J502-1
1 Is a Photoconductor Unit that complies with Photoconductor J410-2 ↔ J502-2
the specifications attached? Unit that J410-3 ↔ J502-3
complies with
J410-4 ↔ J502-4
the
specifications. J410-5 ↔ J502-5
J410-6 ↔ J502-6
Attachment check of Photoconductor Unit Go to Step [3]. End of
2 Re-attach Photoconductor Unit. procedure
J410-7 ↔ J502-7
J410-8 ↔ J502-8
Does the error recur when the power is turned
ON?
Check after replacement of Go to Step [4]. End of
3 Photoconductor Unit procedure
Replace Photoconductor Unit.
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-9 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
† Panel Message 4 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
„ Wrong Photocondctr J502 from LV/HVPS.
Do all of the wiring below have normal
† Possible parts that caused the error continuity?
„ Photoconductor Unit „ PWBA MCU J410-1 ↔ J502-1
J410-2 ↔ J502-2
„ HARNESS ASSY MAIN „ LV/HVPS
J410-3 ↔ J502-3
† Troubleshooting J410-4 ↔ J502-4
J410-5 ↔ J502-5
Step Check Yes No J410-6 ↔ J502-6
Model check of Photoconductor Unit Go to Step [2]. Replace with a J410-7 ↔ J502-7
1 Is a Photoconductor Unit that complies with Photoconductor J410-8 ↔ J502-8
the specifications attached? Unit that
complies with
the
specifications.
Check after replacement of Go to Step [3]. End of
2 Photoconductor Unit procedure
Replace Photoconductor Unit.
Does the error recur when the power is turned
ON?
Power supply check to PWBA MCU Replace PWBA Go to Step [4].
3 Are the following power voltages being MCU. (p.404)
supplied to PWBA MCU from LV/HVPS?
J410-1 ↔ J410-2: 3. 3 VDC
J410-3 ↔ J410-4: 5 VDC
J410-5/6 ↔ J410-7/8: 24 VDC

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 EPSON AcuLaser C1100 Revision B

FIP-10 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [7]. Repair broken
† Panel Message 6 Disconnect P/J415 from PWBA MCU. or shorted part.
„ TonerCart Error Y Do all of the wiring below have normal
continuity?
† Possible parts that caused the error
J415-1 ↔ J106-2
„ Toner Cartridge Y „ ANTENNA ASSY-CTRG or ANTENNA CTRG J415-2 ↔ J106-1
„ HARNESS ASSY MAIN „ PWBA MCU Check after replacement of ANTENNA Go to Step [8]. End of
„ LV/HVPS
7 ASSY-CTRG or ANTENNA CTRG procedure
Replace ANTENNA ASSY-CTRG or
† Troubleshooting ANTENNA CTRG. (p.379) or (p.380)
Does the error recur when the power is turned
Step Check Yes No ON?
Model check of Toner Cartridge Y Go to Step [2]. Replace with a Power supply check to PWBA MCU Replace PWBA Go to Step [9].
1 Is a Toner Cartridge Y that complies with the Toner Cartridge 8 Are the following power voltages being MCU. (p.404)
specifications attached? Y that complies supplied to PWBA MCU from LV/HVPS?
with the J410-1 ↔ J410-2: 3. 3 VDC
specifications.
J410-3 ↔ J410-4: 5 VDC
Attachment check of Toner Cartridge Y Go to Step [3]. End of J410-5/6 ↔ J410-7/8: 24 VDC
2 Re-attach Toner Cartridge Y. procedure
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Does the error recur when the power is turned 9 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
ON?
J502 from LV/HVPS.
Check after replacement of Toner Cartridge Y Go to Step [4]. End of
3 Replace Toner Cartridge Y. procedure
Do all of the wiring below have normal
continuity?
Does the error recur when the power is turned J410-1 ↔ J502-1
ON? J410-2 ↔ J502-2
Check of ANTENNA CTRG Clean Go to Step [6]. J410-3 ↔ J502-3
4 Is ANTENNA CTRG dirty and damaged? ANTENNA J410-4 ↔ J502-4
CTRG, and then J410-5 ↔ J502-5
proceed to step J410-6 ↔ J502-6
[5].
J410-7 ↔ J502-7
Does the error recur when the power is Go to Step [6]. End of J410-8 ↔ J502-8
5 turned ON? procedure

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 EPSON AcuLaser C1100 Revision B

FIP-11 Step Check Yes No

Check after replacement of ANTENNA Go to Step [7]. End of
† Panel Message 6 ASSY-CTRG or ANTENNA CTRG procedure
„ TonerCart Error Y Replace ANTENNA ASSY-CTRG or
ANTENNA CTRG. (p.379) or (p.380)
† Possible parts that caused the error Does the error recur when the power is turned
ON?
„ Toner Cartridge Y „ ANTENNA ASSY-CTRG or ANTENNA CTRG
„ HARNESS ASSY MAIN „ PWBA MCU 7 Power supply check to PWBA MCU Replace PWBA Go to Step [8].
Are the following power voltages being MCU. (p.404)
„ LV/HVPS
supplied to PWBA MCU from LV/HVPS?
† Troubleshooting J410-1 ↔ J410-2: 3. 3 VDC
J410-3 ↔ J410-4: 5 VDC
Step Check Yes No J410-5/6 ↔ J410-7/8: 24 VDC
Attachment check of Toner Cartridge Y Go to Step [2]. End of Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
1 Re-attach Toner Cartridge Y. procedure 8 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Does the error recur when the power is turned J502 from LV/HVPS.
ON? Do all of the wiring below have normal
continuity?
Check after replacement of Toner Cartridge Y Go to Step [3]. End of
2 Replace Toner Cartridge Y. procedure J410-1 ↔ J502-1
J410-2 ↔ J502-2
Does the error recur when the power is turned
ON? J410-3 ↔ J502-3
J410-4 ↔ J502-4
Check of ANTENNA CTRG Clean Go to Step [5].
3 Is ANTENNA CTRG dirty and damaged? ANTENNA
J410-5 ↔ J502-5
CTRG, and then J410-6 ↔ J502-6
proceed to step J410-7 ↔ J502-7
[4]. J410-8 ↔ J502-8
Does the error recur when the power is Go to Step [5]. End of
4 turned ON? procedure
Continuity check of HARNESS ASSY MAIN Go to Step [6]. Repair broken
5 Disconnect P/J415 from PWBA MCU. or shorted part.
Do all of the wiring below have normal
continuity?
J415-1 ↔ J106-2
J415-2 ↔ J106-1

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 EPSON AcuLaser C1100 Revision B

FIP-12 Step Check Yes No

Power supply check to PWBA MCU Replace PWBA Go to Step [5].
† Panel Message 4 Are the following power voltages being MCU. (p.404)
„ TonerCart Error Y supplied to PWBA MCU from LV/HVPS?
J410-1 ↔ J410-2: 3. 3 VDC
† Possible parts that caused the error
J410-3 ↔ J410-4: 5 VDC
„ Toner Cartridge Y „ PWBA MCU J410-5/6 ↔ J410-7/8: 24 VDC
„ HARNESS ASSY MAIN „ LV/HVPS Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
5 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
† Troubleshooting J502 from LV/HVPS.
Do all of the wiring below have normal
Step Check Yes No continuity?
Model check of Toner Cartridge Y Go to Step [2]. Replace with a J410-1 ↔ J502-1
1 Is a Toner Cartridge Y that complies with the Toner Cartridge J410-2 ↔ J502-2
specifications attached? Y that complies J410-3 ↔ J502-3
with the
J410-4 ↔ J502-4
specifications.
J410-5 ↔ J502-5
Attachment check of Toner Cartridge Y Go to Step [3]. End of J410-6 ↔ J502-6
2 Re-attach Toner Cartridge Y. procedure
J410-7 ↔ J502-7
Does the error recur when the power is turned J410-8 ↔ J502-8
ON?
Check after replacement of Toner Cartridge Y Go to Step [4]. End of
3 Replace Toner Cartridge Y. procedure
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-13 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
† Panel Message 4 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
„ Wrong Toner Y J502 from LV/HVPS.
Do all of the wiring below have normal
† Possible parts that caused the error continuity?
„ Toner Cartridge Y „ PWBA MCU J410-1 ↔ J502-1
J410-2 ↔ J502-2
„ HARNESS ASSY MAIN „ LV/HVPS
J410-3 ↔ J502-3
† Troubleshooting J410-4 ↔ J502-4
J410-5 ↔ J502-5
Step Check Yes No J410-6 ↔ J502-6
Model check of Toner Cartridge Y Go to Step [2]. Replace with a J410-7 ↔ J502-7
1 Is a Toner Cartridge Y that complies with the Toner Cartridge J410-8 ↔ J502-8
specifications attached? Y that complies
with the
specifications.
Check after replacement of Toner Cartridge Y Go to Step [3]. End of
2 Replace Toner Cartridge Y. procedure
Does the error recur when the power is turned
ON?
Power supply check to PWBA MCU Replace PWBA Go to Step [4].
3 Are the following power voltages being MCU. (p.404)
supplied to PWBA MCU from LV/HVPS?
J410-1 ↔ J410-2: 3. 3 VDC
J410-3 ↔ J410-4: 5 VDC
J410-5/6 ↔ J410-7/8: 24 VDC

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 EPSON AcuLaser C1100 Revision B

FIP-14 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [7]. Repair broken
† Panel Message 6 Disconnect P/J415 from PWBA MCU. or shorted part.
„ TonerCart Error M Do all of the wiring below have normal
continuity?
† Possible parts that caused the error
J415-1 ↔ J106-2
„ Toner Cartridge M „ ANTENNA ASSY-CTRG or ANTENNA CTRG J415-2 ↔ J106-1
„ HARNESS ASSY MAIN „ PWBA MCU Check after replacement of ANTENNA Go to Step [8]. End of
„ LV/HVPS
7 ASSY-CTRG or ANTENNA CTRG procedure
Replace ANTENNA ASSY-CTRG or
† Troubleshooting ANTENNA CTRG. (p.379) or (p.380)
Does the error recur when the power is turned
Step Check Yes No ON?
Model check of Toner Cartridge M Go to Step [2]. Replace with a Power supply check to PWBA MCU Replace PWBA Go to Step [9].
1 Is a Toner Cartridge M that complies with the Toner Cartridge 8 Are the following power voltages being MCU. (p.404)
specifications attached? M that complies supplied to PWBA MCU from LV/HVPS?
with the J410-1 ↔ J410-2: 3. 3 VDC
specifications.
J410-3 ↔ J410-4: 5 VDC
Attachment check of Toner Cartridge M Go to Step [3]. End of J410-5/6 ↔ J410-7/8: 24 VDC
2 Re-attach Toner Cartridge M. procedure
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Does the error recur when the power is turned 9 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
ON?
J502 from LV/HVPS.
Check after replacement of Toner Cartridge M Go to Step [4]. End of
3 Replace Toner Cartridge M. procedure
Do all of the wiring below have normal
continuity?
Does the error recur when the power is turned J410-1 ↔ J502-1
ON? J410-2 ↔ J502-2
Check of ANTENNA CTRG Clean Go to Step [6]. J410-3 ↔ J502-3
4 Is ANTENNA CTRG dirty and damaged? ANTENNA J410-4 ↔ J502-4
CTRG, and then J410-5 ↔ J502-5
proceed to step J410-6 ↔ J502-6
[5].
J410-7 ↔ J502-7
Does the error recur when the power is Go to Step [6]. End of J410-8 ↔ J502-8
5 turned ON? procedure

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 EPSON AcuLaser C1100 Revision B

FIP-15 Step Check Yes No

Check after replacement of ANTENNA Go to Step [7]. End of
† Panel Message 6 ASSY-CTRG or ANTENNA CTRG procedure
„ TonerCart Error M Replace ANTENNA ASSY-CTRG or
ANTENNA CTRG. (p.379) or (p.380)
† Possible parts that caused the error Does the error recur when the power is turned
ON?
„ Toner Cartridge M „ ANTENNA ASSY-CTRG or ANTENNA CTRG
„ HARNESS ASSY MAIN „ PWBA MCU 7 Power supply check to PWBA MCU Replace PWBA Go to Step [8].
Are the following power voltages being MCU. (p.404)
„ LV/HVPS
supplied to PWBA MCU from LV/HVPS?
† Troubleshooting J410-1 ↔ J410-2: 3. 3 VDC
J410-3 ↔ J410-4: 5 VDC
Step Check Yes No J410-5/6 ↔ J410-7/8: 24 VDC
Attachment check of Toner Cartridge M Go to Step [2]. End of Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
1 Re-attach Toner Cartridge M. procedure 8 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Does the error recur when the power is turned J502 from LV/HVPS.
ON? Do all of the wiring below have normal
continuity?
Check after replacement of Toner Cartridge M Go to Step [3]. End of
2 Replace Toner Cartridge M. procedure J410-1 ↔ J502-1
J410-2 ↔ J502-2
Does the error recur when the power is turned
ON? J410-3 ↔ J502-3
J410-4 ↔ J502-4
Check of ANTENNA CTRG Clean Go to Step [5].
3 Is ANTENNA CTRG dirty and damaged? ANTENNA
J410-5 ↔ J502-5
CTRG, and then J410-6 ↔ J502-6
proceed to step J410-7 ↔ J502-7
[4]. J410-8 ↔ J502-8
Does the error recur when the power is Go to Step [5]. End of
4 turned ON? procedure
Continuity check of HARNESS ASSY MAIN Go to Step [6]. Repair broken
5 Disconnect P/J415 from PWBA MCU. or shorted part.
Do all of the wiring below have normal
continuity?
J415-1 ↔ J106-2
J415-2 ↔ J106-1

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 EPSON AcuLaser C1100 Revision B

FIP-16 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
† Panel Message 5 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
„ TonerCart Error M J502 from LV/HVPS.
Do all of the wiring below have normal
† Possible parts that caused the error continuity?
„ Toner Cartridge M „ PWBA MCU J410-1 ↔ J502-1
J410-2 ↔ J502-2
„ HARNESS ASSY MAIN „ LV/HVPS
J410-3 ↔ J502-3
† Troubleshooting J410-4 ↔ J502-4
J410-5 ↔ J502-5
Step Check Yes No J410-6 ↔ J502-6
Model check of Toner Cartridge M Go to Step [2]. Replace with a J410-7 ↔ J502-7
1 Is a Toner Cartridge M that complies with the Toner Cartridge J410-8 ↔ J502-8
specifications attached? M that complies
with the
specifications.
Attachment check of Toner Cartridge M Go to Step [3]. End of
2 Re-attach Toner Cartridge M. procedure
Does the error recur when the power is turned
ON?
Check after replacement of Toner Cartridge M Go to Step [4]. End of
3 Replace Toner Cartridge M. procedure
Does the error recur when the power is turned
ON?
Power supply check to PWBA MCU Replace PWBA Go to Step [5].
4 Are the following power voltages being MCU. (p.404)
supplied to PWBA MCU from LV/HVPS?
J410-1 ↔ J410-2: 3. 3 VDC
J410-3 ↔ J410-4: 5 VDC
J410-5/6 ↔ J410-7/8: 24 VDC

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 EPSON AcuLaser C1100 Revision B

FIP-17 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
† Panel Message 4 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
„ Wrong Toner M J502 from LV/HVPS.
Do all of the wiring below have normal
† Possible parts that caused the error continuity?
„ Toner Cartridge M „ PWBA MCU J410-1 ↔ J502-1
J410-2 ↔ J502-2
„ HARNESS ASSY MAIN „ LV/HVPS
J410-3 ↔ J502-3
† Troubleshooting J410-4 ↔ J502-4
J410-5 ↔ J502-5
Step Check Yes No J410-6 ↔ J502-6
Model check of Toner Cartridge M Go to Step [2]. Replace with a J410-7 ↔ J502-7
1 Is a Toner Cartridge M that complies with the Toner Cartridge J410-8 ↔ J502-8
specifications attached? M that complies
with the
specifications.
Check after replacement of Toner Cartridge M Go to Step [3]. End of
2 Replace Toner Cartridge M. procedure
Does the error recur when the power is turned
ON?
Power supply check to PWBA MCU Replace PWBA Go to Step [4].
3 Are the following power voltages being MCU. (p.404)
supplied to PWBA MCU from LV/HVPS?
J410-1 ↔ J410-2: 3. 3 VDC
J410-3 ↔ J410-4: 5 VDC
J410-5/6 ↔ J410-7/8: 24 VDC

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 EPSON AcuLaser C1100 Revision B

FIP-18 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [7]. Repair broken
† Panel Message 6 Disconnect P/J415 from PWBA MCU. or shorted part.
„ TonerCart Error C Do all of the wiring below have normal
continuity?
† Possible parts that caused the error
J415-1 ↔ J106-2
„ Toner Cartridge C „ ANTENNA ASSY-CTRG or ANTENNA CTRG J415-2 ↔ J106-1
„ HARNESS ASSY MAIN „ PWBA MCU Check after replacement of ANTENNA Go to Step [8]. End of
„ LV/HVPS
7 ASSY-CTRG or ANTENNA CTRG procedure
Replace ANTENNA ASSY-CTRG or
† Troubleshooting ANTENNA CTRG. (p.379) or (p.380)
Does the error recur when the power is turned
Step Check Yes No ON?
Model check of Toner Cartridge C Go to Step [2]. Replace with a Power supply check to PWBA MCU Replace PWBA Go to Step [9].
1 Is a Toner Cartridge C that complies with the Toner Cartridge 8 Are the following power voltages being MCU. (p.404)
specifications attached? C that complies supplied to PWBA MCU from LV/HVPS?
with the J410-1 ↔ J410-2: 3. 3 VDC
specifications.
J410-3 ↔ J410-4: 5 VDC
Attachment check of Toner Cartridge C Go to Step [3]. End of J410-5/6 ↔ J410-7/8: 24 VDC
2 Re-attach Toner Cartridge C. procedure
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Does the error recur when the power is turned 9 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
ON?
J502 from LV/HVPS.
Check after replacement of Toner Cartridge C Go to Step [4]. End of
3 Replace Toner Cartridge C. procedure
Do all of the wiring below have normal
continuity?
Does the error recur when the power is turned J410-1 ↔ J502-1
ON? J410-2 ↔ J502-2
Check of ANTENNA CTRG Clean Go to Step [6]. J410-3 ↔ J502-3
4 Is ANTENNA CTRG dirty and damaged? ANTENNA J410-4 ↔ J502-4
CTRG, and then J410-5 ↔ J502-5
proceed to step J410-6 ↔ J502-6
[5].
J410-7 ↔ J502-7
Does the error recur when the power is Go to Step [6]. End of J410-8 ↔ J502-8
5 turned ON? procedure

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 EPSON AcuLaser C1100 Revision B

FIP-19 Step Check Yes No

Check after replacement of ANTENNA Go to Step [7]. End of
† Panel Message 6 ASSY-CTRG or ANTENNA CTRG procedure
„ TonerCart Error C Replace ANTENNA ASSY-CTRG or
ANTENNA CTRG. (p.379) or (p.380)
† Possible parts that caused the error Does the error recur when the power is turned
ON?
„ Toner Cartridge C „ ANTENNA ASSY-CTRG or ANTENNA CTRG
„ HARNESS ASSY MAIN „ PWBA MCU 7 Power supply check to PWBA MCU Replace PWBA Go to Step [8].
Are the following power voltages being MCU. (p.404)
„ LV/HVPS
supplied to PWBA MCU from LV/HVPS?
† Troubleshooting J410-1 ↔ J410-2: 3. 3 VDC
J410-3 ↔ J410-4: 5 VDC
Step Check Yes No J410-5/6 ↔ J410-7/8: 24 VDC
Attachment check of Toner Cartridge C Go to Step [2]. End of Continuity check between PWBA MCU Replace LV/ Repair broken
1 Re-attach Toner Cartridge C. procedure 8 and LV/HVPS of HARNESS ASSY MAIN HVPS. (p.407) or shorted part.
Does the error recur when the power is turned Disconnect P/J410 from PWBA MCU and P/
ON? J502 from LV/HVPS.
Do all of the wiring below have normal
Check after replacement of Toner Cartridge C Go to Step [3]. End of
2 Replace Toner Cartridge C. procedure
continuity?
J410-1 ↔ J502-1
Does the error recur when the power is turned
J410-2 ↔ J502-2
ON?
J410-3 ↔ J502-3
3 Check of ANTENNA CTRG Clean Go to Step [5]. J410-4 ↔ J502-4
Is ANTENNA CTRG dirty and damaged? ANTENNA
J410-5 ↔ J502-5
CTRG, and then
proceed to step J410-6 ↔ J502-6
[4]. J410-7 ↔ J502-7
J410-8 ↔ J502-8
Does the error recur when the power is Go to Step [5]. End of
4 turned ON? procedure
Continuity check of HARNESS ASSY MAIN Go to Step [6]. Repair broken
5 Disconnect P/J415 from PWBA MCU. or shorted part.
Do all of the wiring below have normal
continuity?
J415-1 ↔ J106-2
J415-2 ↔ J106-1

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 EPSON AcuLaser C1100 Revision B

FIP-20 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
† Panel Message 5 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
„ TonerCart Error C J502 from LV/HVPS.
Do all of the wiring below have normal
† Possible parts that caused the error continuity?
„ Toner Cartridge C „ PWBA MCU J410-1 ↔ J502-1
J410-2 ↔ J502-2
„ HARNESS ASSY MAIN „ LV/HVPS
J410-3 ↔ J502-3
† Troubleshooting J410-4 ↔ J502-4
J410-5 ↔ J502-5
Step Check Yes No J410-6 ↔ J502-6
Model check of Toner Cartridge C Go to Step [2]. Replace with a J410-7 ↔ J502-7
1 Is a Toner Cartridge C that complies with the Toner Cartridge J410-8 ↔ J502-8
specifications attached? C that complies
with the
specifications.
Attachment check of Toner Cartridge C Go to Step [3]. End of
2 Re-attach Toner Cartridge C. procedure
Does the error recur when the power is turned
ON?
Check after replacement of Toner Cartridge C Go to Step [4]. End of
3 Replace Toner Cartridge C. procedure
Does the error recur when the power is turned
ON?
Power supply check to PWBA MCU Replace PWBA Go to Step [5].
4 Are the following power voltages being MCU. (p.404)
supplied to PWBA MCU from LV/HVPS?
J410-1 ↔ J410-2: 3. 3 VDC
J410-3 ↔ J410-4: 5 VDC
J410-5/6 ↔ J410-7/8: 24 VDC

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 EPSON AcuLaser C1100 Revision B

FIP-21 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
† Panel Message 4 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
„ Wrong Toner C J502 from LV/HVPS.
Do all of the wiring below have normal
† Possible parts that caused the error continuity?
„ Toner Cartridge C „ PWBA MCU J410-1 ↔ J502-1
J410-2 ↔ J502-2
„ HARNESS ASSY MAIN „ LV/HVPS
J410-3 ↔ J502-3
† Troubleshooting J410-4 ↔ J502-4
J410-5 ↔ J502-5
Step Check Yes No J410-6 ↔ J502-6
Model check of Toner Cartridge C Go to Step [2]. Replace with a J410-7 ↔ J502-7
1 Is a Toner Cartridge C that complies with the Toner Cartridge J410-8 ↔ J502-8
specifications attached? C that complies
with the
specifications.
Check after replacement of Toner Cartridge C Go to Step [3]. End of
2 Replace Toner Cartridge C. procedure
Does the error recur when the power is turned
ON?
Power supply check to PWBA MCU Replace PWBA Go to Step [4].
3 Are the following power voltages being MCU. (p.404)
supplied to PWBA MCU from LV/HVPS?
J410-1 ↔ J410-2: 3. 3 VDC
J410-3 ↔ J410-4: 5 VDC
J410-5/6 ↔ J410-7/8: 24 VDC

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 EPSON AcuLaser C1100 Revision B

FIP-22 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [7]. Repair broken
† Panel Message 6 Disconnect P/J415 from PWBA MCU. or shorted part.
„ TonerCart Error K Do all of the wiring below have normal
continuity?
† Possible parts that caused the error
J415-1 ↔ J106-2
„ Toner Cartridge K „ ANTENNA ASSY-CTRG or ANTENNA CTRG J415-2 ↔ J106-1
„ HARNESS ASSY MAIN „ PWBA MCU Check after replacement of ANTENNA Go to Step [8]. End of
„ LV/HVPS
7 ASSY-CTRG or ANTENNA CTRG procedure
Replace ANTENNA ASSY-CTRG or
† Troubleshooting ANTENNA CTRG. (p.379) or (p.380)
Does the error recur when the power is turned
Step Check Yes No ON?
Model check of Toner Cartridge K Go to Step [2]. Replace with a Power supply check to PWBA MCU Replace PWBA Go to Step [9].
1 Is a Toner Cartridge K that complies with the Toner Cartridge 8 Are the following power voltages being MCU. (p.404)
specifications attached? K that complies supplied to PWBA MCU from LV/HVPS?
with the J410-1 ↔ J410-2: 3. 3 VDC
specifications.
J410-3 ↔ J410-4: 5 VDC
Attachment check of Toner Cartridge K Go to Step [3]. End of J410-5/6 ↔ J410-7/8: 24 VDC
2 Re-attach Toner Cartridge K. procedure
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Does the error recur when the power is turned 9 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
ON?
J502 from LV/HVPS.
Check after replacement of Toner Cartridge K Go to Step [4]. End of
3 Replace Toner Cartridge K. procedure
Do all of the wiring below have normal
continuity?
Does the error recur when the power is turned J410-1 ↔ J502-1
ON? J410-2 ↔ J502-2
Check of ANTENNA CTRG Clean Go to Step [6]. J410-3 ↔ J502-3
4 Is ANTENNA CTRG dirty and damaged? ANTENNA J410-4 ↔ J502-4
CTRG, and then J410-5 ↔ J502-5
proceed to step J410-6 ↔ J502-6
[5].
J410-7 ↔ J502-7
Does the error recur when the power is Go to Step [6]. End of J410-8 ↔ J502-8
5 turned ON? procedure

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 EPSON AcuLaser C1100 Revision B

FIP-23 Step Check Yes No

Check after replacement of ANTENNA Go to Step [7]. End of
† Panel Message 6 ASSY-CTRG or ANTENNA CTRG procedure
„ TonerCart Error K Replace ANTENNA ASSY-CTRG or
ANTENNA CTRG. (p.379) or (p.380)
† Possible parts that caused the error Does the error recur when the power is turned
ON?
„ Toner Cartridge K „ ANTENNA ASSY-CTRG or ANTENNA CTRG
„ HARNESS ASSY MAIN „ PWBA MCU 7 Power supply check to PWBA MCU Replace PWBA Go to Step [8].
Are the following power voltages being MCU. (p.404)
„ LV/HVPS
supplied to PWBA MCU from LV/HVPS?
† Troubleshooting J410-1 ↔ J410-2: 3. 3 VDC
J410-3 ↔ J410-4: 5 VDC
Step Check Yes No J410-5/6 ↔ J410-7/8: 24 VDC
Model check of Toner Cartridge K Go to Step [2]. End of Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
1 Re-attach Toner Cartridge K. procedure 8 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Does the error recur when the power is turned J502 from LV/HVPS.
ON? Do all of the wiring below have normal
continuity?
Check after replacement of Toner Cartridge K Go to Step [3]. End of
2 Replace Toner Cartridge K. procedure J410-1 ↔ J502-1
J410-2 ↔ J502-2
Does the error recur when the power is turned
ON? J410-3 ↔ J502-3
J410-4 ↔ J502-4
Check of ANTENNA CTRG Clean Go to Step [5].
3 Is ANTENNA CTRG dirty and damaged? ANTENNA
J410-5 ↔ J502-5
CTRG, and then J410-6 ↔ J502-6
proceed to step J410-7 ↔ J502-7
[4]. J410-8 ↔ J502-8
Does the error recur when the power is Go to Step [5]. End of
4 turned ON? procedure
Continuity check of HARNESS ASSY MAIN Go to Step [6]. Repair broken
5 Disconnect P/J415 from PWBA MCU. or shorted part.
Do all of the wiring below have normal
continuity?
J415-1 ↔ J106-2
J415-2 ↔ J106-1

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 EPSON AcuLaser C1100 Revision B

FIP-24 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
† Panel Message 5 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
„ TonerCart Error K J502 from LV/HVPS.
Do all of the wiring below have normal
† Possible parts that caused the error continuity?
„ Toner Cartridge K „ PWBA MCU J410-1 ↔ J502-1
J410-2 ↔ J502-2
„ HARNESS ASSY MAIN „ LV/HVPS
J410-3 ↔ J502-3
† Troubleshooting J410-4 ↔ J502-4
J410-5 ↔ J502-5
Step Check Yes No J410-6 ↔ J502-6
Model check of Toner Cartridge K Go to Step [2]. Replace with a J410-7 ↔ J502-7
1 Is a Toner Cartridge K that complies with the Toner Cartridge J410-8 ↔ J502-8
specifications attached? K that complies
with the
specifications.
Attachment check of Toner Cartridge K Go to Step [3]. End of
2 Re-attach Toner Cartridge K. procedure
Does the error recur when the power is turned
ON?
Check after replacement of Toner Cartridge K Go to Step [4]. End of
3 Replace Toner Cartridge K. procedure
Does the error recur when the power is turned
ON?
Power supply check to PWBA MCU Replace PWBA Go to Step [5].
4 Are the following power voltages being MCU. (p.404)
supplied to PWBA MCU from LV/HVPS?
J410-1 ↔ J410-2: 3. 3 VDC
J410-3 ↔ J410-4: 5 VDC
J410-5/6 ↔ J410-7/8: 24 VDC

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 EPSON AcuLaser C1100 Revision B

FIP-25 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
† Panel Message 4 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
„ Wrong Toner K J502 from LV/HVPS.
Do all of the wiring below have normal
† Possible parts that caused the error continuity?
„ Toner Cartridge K „ PWBA MCU J410-1 ↔ J502-1
J410-2 ↔ J502-2
„ HARNESS ASSY MAIN „ LV/HVPS
J410-3 ↔ J502-3
† Troubleshooting J410-4 ↔ J502-4
J410-5 ↔ J502-5
Step Check Yes No J410-6 ↔ J502-6
Model check of Toner Cartridge K Go to Step [2]. Replace with a J410-7 ↔ J502-7
1 Is a Toner Cartridge K that complies with the Toner Cartridge J410-8 ↔ J502-8
specifications attached? K that complies
with the
specifications.
Check after replacement of Toner Cartridge K Go to Step [3]. End of
2 Replace Toner Cartridge K. procedure
Does the error recur when the power is turned
ON?
Power supply check to PWBA MCU Replace PWBA Go to Step [4].
3 Are the following power voltages being MCU. (p.404)
supplied to PWBA MCU from LV/HVPS?
J410-1 ↔ J410-2: 3. 3 VDC
J410-3 ↔ J410-4: 5 VDC
J410-5/6 ↔ J410-7/8: 24 VDC

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 EPSON AcuLaser C1100 Revision B

FIP-26 Step Check Yes No

Shape and operation check of ROLL ASSY Go to Step [5]. Replace the
† Panel Message 4 of Feeder section ROLL in
„ Jam LC, G Open COVER-REAR 500 of Feeder. question.
Are ROLL ASSY TURN 500, HOLDER
† Possible parts that caused the error ASSY RETARD 500, ROLL ASSY FEED
500 and other parts attached correctly?
„ ROLL ASSY TURN 500 „ ROLL ASSY FEED 500
Also, do these parts rotate smoothly without
„ HOLDER ASSY RETARD 500 „ SOLENOID FEED any dirt or damage?
„ HARNESS ASSY MAIN „ DRIVE ASSY FEED Turn by hand to check.
„ PWBA TRAY 500 „ HARNESS-ASSY FEED 1
Does the error recur when a test print is Go to Step [6]. End of
„ ACTUATOR T/R „ SENSOR T/R 5 made? procedure
„ HARNESS ASSY FEED 3 „ PWBA MCU
Operation check of SOLENOID FEED Go to Step [12]. Go to Step [7].
„ LV/HVPS „ CLUTCH ASSY FEED 6 Does SOLENOID FEED operate correctly?
„ HARNESS-ASSY FEED MAIN „ DRIVE ASSY FEED Make a test print and confirm.
† Troubleshooting Continuity check of HARNESS-ASSY Go to Step [8]. Replace
7 FEED MAIN HARNESS-
Step Check Yes No Disconnect P/J437 from PWBA TRAY 500. ASSY FEED
Do all of the wiring below have normal MAIN.
Check of the paper Replace with Go to Step [2].
1 Is the paper loaded in the paper tray wrinkled new, dry paper.
continuity?
J437-16 ↔ P610-2
or torn?
J437-17 ↔ P610-1
Paper size setting check Go to Step [4]. Change the
2 Does the size of the paper in use match the paper size 8 Check after replacement of DRIVE ASSY Go to Step [9]. End of
setting, and FEED procedure
size of the paper set on the control panel?
proceed to step Replace DRIVE ASSY FEED 250. (p.458)
[3]. Does the error recur when a test print is made?
Does the error recur when a test print is Go to Step [4]. End of
3 made? procedure 9 Check after replacement of PWBA TRAY 500 Go to Step [10].
Replace PWBA TRAY 500. (p.456)
End of
procedure
Does the error recur when a test print is made?
Continuity check of HARNESS-ASSY FEED 1 Go to Step [11]. Replace
10 Disconnect P/J435 from PWBA TRAY CONT. HARNESS-
Do all of the wiring below have normal ASSY FEED 1.
continuity? (p.462)
J435-2 ↔ P608-9
J435-3 ↔ P608-8
J435-4 ↔ P608-7

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Continuity check of HARNESS ASSY MAIN Replace PWBA Repair broken Continuity check of HARNESS ASSY FEED 3 Replace Repair broken
11 Disconnect P/J421 from PWBA MCU. MCU. (p.404) or shorted part. 16 Disconnect P/J618. SENSOR or shorted part.
Do all of the wiring below have normal Do all of the wiring below have normal T/R. (p.482)
continuity? continuity?
J421-7 ↔ J608-4 P618-4 ↔ J120-3
J421-8 ↔ J608-3 P618-5 ↔ J120-2
J421-9 ↔ J608-2 P618-6 ↔ J120-1
Operation check of ACTUATOR T/R Go to Step [13]. Replace 5 VDC power supply check to PWBA Go to Step [9]. Go to Step [18].
12 Does ACTUATOR T/R move smoothly ACTUATOR 17 TRAY 500
without any damage? Does it leave the sensing T/R. (p.481) The voltage of P435-6 ↔ P435-5 on PWBA
area of Tray Path Sensor when there is paper? TRAY 500 is 5 VDC?
Does it enter the sensing area when there is no
Continuity check of HARNESS-ASSY FEED 1 Go to Step[19]. Replace
paper? 18 Disconnect P/J435 from PWBA TRAY HARNESS-
Operation check of SENSOR T/R Go to Step [22]. Go to Step [14]. ASSY FEED 1.
13 The voltage of P437-15 ↔ P437-14 on
CONT.
Do all of the wiring below have normal (p.462)
PWBA TRAY CONT is 0 VDC when continuity?
ACTUATOR T/R enters the sensing area of J435-6 ↔ P608-5
SENSOR T/R, and is 5 VDC when it leaves
J435-5 ↔ P608-6
the sensing area?
Continuity check of HARNESS ASSY MAIN Go to Step [20]. Repair broken
14 5 VDC power supply check to SENSOR T/R Go to Step [15]. Go to Step [17]. 19 Disconnect P/J421 from PWBA MCU. or shorted part.
Remove COVER LEFT 500.
Do all of the wiring below have normal
The voltage of P437-13 ↔ P437-14 on
continuity?
PWBA TRAY 500 is 5 VDC?
J421-5 ↔ J608-6
Continuity check of HARNESS-ASSY Go to Step [16]. Replace
15 FEED MAIN HARNESS-
J421-6 ↔ J608-5
5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [21].
Disconnect P/J437 and P/J618 from PWBA
TRAY CONT.
ASSY FEED
MAIN.
20 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
Do all of the wiring below have normal MCU is 5 VDC?
continuity? Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
J437-13 ↔ J618-3 21 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
J437-14 ↔ J618-2 J502 from LV/HVPS.
J437-15 ↔ J618-1 Do all of the wiring below have normal
continuity?
J410-3 ↔ J502-3
J410-4 ↔ J502-4

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Operation check of CLUTCH ASSY FEED Go to Step [30]. Go to Step [23]. Continuity check of HARNESS ASSY MAIN Go to Step [28]. Repair broken
22 Does CLUTCH ASSY FEED operate
27 Disconnect P/J421 from PWBA MCU. or shorted part.
normally? Do all of the wiring below have normal
Make a test print and confirm by the operating continuity?
noise. J421-1 ↔ J608-10
Continuity check of HARNESS-ASSY Go to Step [24]. Replace J421-2 ↔ J608-9
23 FEED MAIN HARNESS- J421-3 ↔ J608-8
Disconnect P/J437 from PWBA TRAY ASSY FEED J421-4 ↔ J608-7
CONT. MAIN.
24 VDC power supply check to PWBA MCU Replace PWBA Go to Step [29].
Do all of the wiring below have normal 28 Disconnect the P/J410 from PWBA MCU. MCU. (p.404)
continuity?
The voltage of P410-5/6 ↔ P410-7/8 P410-7/
J437-6 ↔ P609-2
8 on PWBA MCU is 24 VDC?
J437-7 ↔ P609-1
Continuity check of HARNESS-ASSY MAIN Replace LV/ Repair broken
24 Check of resistance value of CLUTCH Go to Step [25]. Replace 29 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
ASSY FEED CLUTCH
J502 from LV/HVPS.
The winding resistance between the terminals ASSY FEED.
(p.461) Do all of the wiring below have normal
of CLUTCH ASSY FEED is 144Ω ± 10%
continuity?
(20°C)?
J410-5 ↔ J502-5
24 VDC power supply check to PWBA Go to Step [9]. Go to Step [26].
25 TRAY 500
J410-6 ↔ J502-6
J410-7 ↔ J502-7
The voltage of P435-9/10 ↔ 435-7/8 on
J410-8 ↔ J502-8
PWBA TRAY 500 is 24 VDC?
Check of 24 VDC power supply to DRIVE Go to Step [31]. Go to Step [25].
26 Continuity check of HARNESS-ASSY FEED 1 Go to Step [27]. Replace 30 ASSY FEED
Disconnect P/J435 from PWBA TRAY HARNESS-
ASSY FEED 1. The voltage of P437-4 ↔ P437-5 on PWBA
CONT.
(p.462) TRAY CONT is 24 VDC?
Do all of the wiring below have normal
Continuity check of HARNESS-ASSY Go to Step [8]. Replace
continuity?
J435-7 ↔ P608-4
31 FEED MAIN HARNESS-
Disconnect P/J437 from PWBA TRAY 500. ASSY FEED
J435-8 ↔ P608-3
Do all of the wiring below have normal MAIN.
J435-9 ↔ P608-2
continuity?
J435-10 ↔ P608-1
J437-5 ↔ J440-1
J437-4 ↔ J440-2
J437-2 ↔ J440-4
J437-1 ↔ J440-5

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 EPSON AcuLaser C1100 Revision B

FIP-27 Step Check Yes No

Shape and operation check of ROLL ASSY Go to Step [5]. Replace ROLL
† Panel Message 4 of MSI section ASSY in
„ Jam MP, E Remove MSI. (p.304) question.
Are ROLL MSI, HOLDER ASSY RETARD
„ Jam D, E MSI, CHUTE ASSY PAPER GUIDE, and
† Possible parts that caused the error other parts attached correctly?
Also, do these parts rotate smoothly without
„ ROLL MSI „ HOLDER ASSY RETARD MSI any dirt or damage?
„ CHUTE ASSY PAPER GUIDE „ ROLL ASSY-PRE REGI Turn by hand to check.
„ ROLL-PINCH „ ACTUATOR-REGI. Shape and operation check of ROLL Go to Step [6]. Replace ROLL
„ SENSOR REGI „ HARNESS-ASSY P/H1 5 ASSY-PRE REGI and ROLL-PINCH in question.
„ HARNESS-ASSY P/H2 „ PWBA MCU Open CHUTE ASSY-REAR.
„ LV/HVPS „ MOTOR-PH Are ROLL ASSY-PRE REGI and ROLL-
PINCH attached correctly?
„ HARNESS ASSY MAIN „ CLUTCH ASSY PRE REGI
Also, do these parts rotate smoothly without
† Troubleshooting any dirt or damage?
Turn by hand to check.
Step Check Yes No Does the error recur when a test print is Go to Step [7]. End of
Check of the paper Replace with Go to Step [2].
6 made? procedure
1 Is the paper loaded in the paper tray wrinkled new, dry paper. Check of the paper position Go to Step [8]. Go to Step [20].
or torn? 7 Is the leading edge of the paper passing
Paper size setting check Go to Step [4]. Change the through PRE REGI ROLL?
2 Does the size of the paper in use match the paper size Operation check of ACTUATOR-REGI Go to Step [9]. Replace
size of the paper set on the control panel? setting, and 8 Does ACTUATOR-REGI move smoothly ACTUATOR-
proceed to step without any damage? Does it enter the sensor REGI. (p.335)
[3]. sensing area when there is paper? Does it
Does the error recur when a test print is Go to Step [4]. End of leave the sensor sensing area when there is no
3 made? procedure paper?
Operation check of SENSOR REGI Go to Step [15]. Go to Step [10].
9 The voltage of P408-12 ↔ P408-11 on
PWBA MCU is 0 VDC when ACTUATOR
REGI enters the sensor sensing area, and is 5
VDC when it leaves the sensing area?
5 VDC power supply check to SENSOR REGI Go to Step [11]. Go to Step [13].
10 The voltage of P408-10 ↔ P408-11 on
PWBA MCU is 5 VDC?

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Continuity check of HARNESS-ASSY P/H1 Go to Step [12]. Replace Continuity check of HARNESS-ASSY P/H1 Go to Step [17]. Replace
11 Disconnect the P/J408 from PWBA MCU. HARNESS- 16 Disconnect the P/J409 from PWBA MCU. HARNESS-
Do all of the wiring below have normal ASSY P/H1. Do all of the wiring below have normal ASSY P/H1.
continuity? continuity?
J408-10 ↔ J603-3 J409-1 ↔ P604-6
J408-11 ↔ J603-2 J409-2 ↔ P604-5
J408-12 ↔ J603-1 J409-3 ↔ P604-4
Continuity check of HARNESS-ASSY P/H2 Replace Replace J409-4 ↔ P604-3
12 Disconnect P/J603 and P/J102 from PWBA SENSOR HARNESS- J409-5 ↔ P604-2
MCU. REGI. (p.336) ASSY P/H2. J409-6 ↔ P604-1
Do all of the wiring below have normal Check after replacement of MOTOR-PH Replace PWBA End of
continuity. 17 Replace MOTOR-PH. (p.337) MCU. (p.404) procedure
P603-10 ↔ J102-3 Does the error recur when a test print is made?
P603-11 ↔ J102-2
24 VDC power supply check to PWBA MCU Replace PWBA Go to Step [19].
P603-12 ↔ J102-1 18 The voltage of P410-5/6 ↔ P410-7/8 on MCU. (p.404)
5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [14].
13 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
PWBA MCU is 24 VDC?
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
MCU is 5 VDC? 19 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
14 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
J502 from LV/HVPS.
Do all of the wiring below have normal
J502 from LV/HVPS. continuity?
Do all of the wiring below have normal J410-5 ↔ J502-5
continuity? J410-6 ↔ J502-6
J410-3 ↔ J502-3 J410-7 ↔ J502-7
J410-4 ↔ J502-4 J410-8 ↔ J502-8
24 VDC power supply check to P/H MOTOR Go to Step [16]. Go to Step [18].
15 The voltage of P409-6 ↔ P409-5 on PWBA 20 Continuity check of HARNESS-ASSY P/H1 Go to Step [21]. Replace
HARNESS-
Disconnect the P/J408 from PWBA MCU.
MCU is 24 VDC? ASSY P/H1.
Do all of the wiring below have normal
continuity?
J408-1 ↔ J603-12
J408-2 ↔ J603-11

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No

Continuity check of HARNESS-ASSY P/H2 Go to Step [22]. Replace
21 Disconnect P/J603. HARNESS-
Do all of the wiring below have normal ASSY P/H2.
continuity?
P603-1 ↔ P202-2
P603-2 ↔ P202-1
Check of resistance value of CLUTCH Go to Step [18]. Replace
22 ASSY PRE REGI CLUTCH
Disconnect P/J202. ASSY PRE
The winding resistance between the terminals REGI. (p.338)
of CLUTCH ASSY PRE REGI is 144Ω ±
10% (20°C)?

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 EPSON AcuLaser C1100 Revision B

FIP-28 Step Check Yes No

Shape and operation check of ROLL ASSY Go to Step [6]. Replace ROLL
† Panel Message 5 of Feeder section ASSY in
„ Jam E Open COVER-REAR 500 of Feeder. question.
Are ROLL ASSY TURN 500, HOLDER
† Possible parts that caused the error ASSY RETARD 500, ROLL ASSY FEED
500 and other parts attached correctly?
„ ROLL ASSY TURN 500 „ HOLDER ASSY RETARD 500
Also, do these parts rotate smoothly without
„ ROLL ASSY FEED 500 „ ROLL PINCH A any dirt or damage?
„ ROLL PINCH B „ ROLL ASSY-PRE REGI Turn by hand to check.
„ ROLL-PINCH „ ACTUATOR-REGI
Shape and operation check of ROLL PINCH Go to Step [7]. Replace ROLL
„ SENSOR REGI „ HARNESS-ASSY P/H1 6 A and ROLL PINCH B of Tray1 Feeder PINCH in
„ HARNESS-ASSY P/H2 „ PWBA MCU Open COVER-REAR 500. question.
„ LV/HVPS „ MOTOR-PH Are ROLL PINCH A and ROLL PINCH B
„ HARNESS ASSY MAIN „ CLUTCH ASSY PRE REGI attached correctly?
Also, do these parts rotate smoothly without
† Troubleshooting any dirt or damage?
Turn by hand to check.
Step Check Yes No
Shape and operation check of ROLL Go to Step [8]. Replace ROLL
Check of Feeder attachment on printer Go to Step [2]. End of 7 ASSY-PRE REGI and ROLL-PINCH in question.
1 Remove the Feeder and re-attach, then made a procedure Open CHUTE ASSY-REAR.
test print. Are ROLL ASSY-PRE REGI and ROLL-
Does the error recur? PINCH attached correctly?
Check of the paper Replace with Go to Step [3]. Also, do these parts rotate smoothly without
2 Is the paper loaded in the paper tray wrinkled new, dry paper. any dirt or damage?
or torn? Turn by hand to check.
Does the error recur when a test print is Go to Step [9]. End of
3 Paper size setting check Go to Step [5]. Change the
paper size
8 made? procedure
Does the size of the paper in use match the
size of the paper set on the control panel? setting, and Check of paper position Go to Step [10]. Go to Step [22].
proceed to step 9 Is the leading edge of the paper passing
[4]. through PRE REGI ROLL?
Does the error recur when a test print is Go to Step [5]. End of
4 made? procedure 10 Operation check of ACTUATOR-REGI Go to Step [11]. Replace
ACTUATOR-
Does ACTUATOR-REGI move smoothly
without any damage? Does it enter the sensor REGI. (p.335)
sensing area when there is paper? Does it
leave the sensor sensing area when there is no
paper?

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Operation check of SENSOR REGI Go to Step [17]. Go to Step [12]. 24 VDC power supply check to P/H MOTOR Go to Step [18]. Go to Step [20].
11 The voltage of P408-12 ↔ P408-11 on
17 The voltage of P409-6 ↔ P409-5 on PWBA
PWBA MCU is 0 VDC when ACTUATOR MCU is 24 VDC?
REGI enters the sensor sensing area, and is 5
Continuity check of HARNESS-ASSY P/H1 Go to Step [19]. Replace
VDC when it leaves the sensing area? 18 Disconnect the P/J409 from PWBA MCU. HARNESS-
5 VDC power supply check to SENSOR REGI Go to Step [13]. Go to Step [15]. ASSY P/H1.
12 The voltage of P408-10 ↔ P408-11 on
Do all of the wiring below have normal
continuity?
PWBA MCU is 5 VDC? J409-1 ↔ P604-6
Continuity check of HARNESS-ASSY P/H1 Go to Step [14]. Replace J409-2 ↔ P604-5
13 Disconnect the P/J408 from PWBA MCU. HARNESS- J409-3 ↔ P604-4
Do all of the wiring below have normal ASSY P/H1. J409-4 ↔ P604-3
continuity? J409-5 ↔ P604-2
J408-10 ↔ J603-3 J409-6 ↔ P604-1
J408-11 ↔ J603-2
Check after replacement of MOTOR-PH Replace PWBA End of
J408-12 ↔ J603-1 19 Replace MOTOR-PH. (p.337) MCU. (p.404) procedure
Continuity check of HARNESS-ASSY P/H2 Replace Replace
14 Disconnect P/J603 and P/J102 from PWBA SENSOR HARNESS-
Does the error recur when a test print is made?
24 VDC power supply check to PWBA MCU Replace PWBA Go to Step [21].
MCU. REGI. (p.336) ASSY P/H2. 20 The voltage of P410-5/6 ↔ P410-7/8 on MCU. (p.404)
Do all of the wiring below have normal
PWBA MCU is 24 VDC?
continuity?
P603-10 ↔ J102-3 Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
P603-11 ↔ J102-2
21 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
P603-12 ↔ J102-1 J502 from LV/HVPS.
Do all of the wiring below have normal
5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [16].
15 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
continuity?
J410-5 ↔ J502-5
MCU is 5 VDC?
J410-6 ↔ J502-6
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken J410-7 ↔ J502-7
16 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part. J410-8 ↔ J502-8
J502 from LV/HVPS.
Continuity check of HARNESS-ASSY P/H1 Go to Step [23]. Replace
Do all of the wiring below have normal
continuity?
22 Disconnect the P/J408 from PWBA MCU. HARNESS-
Do all of the wiring below have normal ASSY P/H1.
J410-3 ↔ J502-3
continuity?
J410-4 ↔ J502-4
J408-1 ↔ J603-12
J408-2 ↔ J603-11

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No

Continuity check of HARNESS-ASSY P/H2 Go to Step [24]. Replace
23 Disconnect P/J603. HARNESS-
Do all of the wiring below have normal ASSY P/H2.
continuity?
P603-1 ↔ P202-2
P603-2 ↔ P202-1
Check of resistance value of CLUTCH Go to Step [20]. Replace
24 ASSY PRE REGI CLUTCH ASSY
Disconnect P/J202. PRE REGI.
The winding resistance between the terminals (p.338)
of CLUTCH ASSY PRE REGI
is 144Ω ± 10% (20°C)?

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 EPSON AcuLaser C1100 Revision B

FIP-29 Step Check Yes No

Shape and operation check of ROLL-REGI Go to Step[6]. Replace or re-
† Panel Message 5 METAL and ROLL REGI RUBBER attach ROLL in
„ Jam E Open CHUTE ASSY-REAR. question.
Are the ROLL-REGI and ROLL REGI
„ Jam D, E RUBBER attached correctly?
† Possible parts that caused the error Also, do these parts rotate smoothly without
any dirt or damage?
„ ROLL ASSY PRE-REGI „ ROLL-PINCH Turn by hand to check.
„ ROLL-REGI METAL „ ROLL REGI RUBBER
Operation check of ACTUATOR-REGI Go to Step[7]. Replace
„ ACTUATOR-REGI „ SENSOR REGI 6 Does ACTUATOR-REGI move smoothly ACTUATOR-
„ MOTOR-PH „ HARNESS-ASSY P/H1 without any damage? Does ACTUATOR- REGI. (p.335)
„ HARNESS-ASSY P/H2 „ PWBA MCU REGI enter the sensor sensing area when there
is paper? Does it leave the sensor sensing area
„ LV/HVPS „ HARNESS ASSY MAIN
when there is no paper?
† Troubleshooting Operation check of SENSOR REGI Go to Step[8]. Go to Step[11].
7 The voltage of P408-12 ↔ P408-11 on
Step Check Yes No PWBA MCU is 0 VDC when ACTUATOR
REGI enters the sensing area of SENSOR
Paper size check Go to Step[2]. Use paper of
1 Is the paper size compliant with the size compliant
REGI, and is 5 VDC when it leaves the
sensing area?
specifications? with the
specifications. 24 VDC power supply check to MOTOR-PH Go to Step[9]. Go to Step[14].
8 The voltage of P409-6 ↔ P409-5 on PWBA
Paper size setting check Go to Step[4]. Change the
2 Does the size of the paper in use match the paper size MCU is 24 VDC?
size of the paper set on the control panel? setting, and Continuity check of HARNESS-ASSY P/H1 Go to Step[10]. Replace
proceed to step 9 Disconnect P/J405 and P/J604 from PWBA HARNESS-
[3]. ASSY P/H1.
MCU.
Does the error recur when a test print is Go to Step[4]. End of
3 made by dialog operations? procedure
Do all of the wiring below have normal
continuity?
Shape and operation check of ROLL ASSY Go to Step[5]. Replace or re- J409-1 ↔ P604-6
4 PRE-REGI and ROLL-PINCH attach ROLL in J409-2 ↔ P604-5
Open CHUTE ASSY-REAR. question. J409-3 ↔ P604-4
Are ROLL ASSY PRE-REGI and ROLL- J409-4 ↔ P604-3
PINCH attached correctly? J409-5 ↔ P604-2
Also, do these parts rotate smoothly without J409-6 ↔ P604-1
any dirt or damage?
Turn by hand to check.

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Check after replacement of MOTOR-PH Replace PWBA End of 5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [17].
10 Replace MOTOR-PH. (p.337) MCU. (p.404) procedure 16 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
Does the error recur when the power is turned MCU is 5 VDC?
ON? Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
5 VDC power supply check to SENSOR REGI Go to Step[12]. Go to Step[16].
17 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
11 The voltage of P408-10 ↔ P408-11 on J502 from LV/HVPS.
PWBA MCU is 5 VDC? Do all of the wiring below have normal
continuity?
Continuity check of HARNESS-ASSY P/H1 Go to Step [13]. Replace
12 Disconnect the P/J408 from PWBA MCU. HARNESS- J410-3 ↔ J502-3
ASSY P/H1. J410-4 ↔ J502-4
Do all of the wiring below have normal
continuity?
J408-10 ↔ J603-3
J408-11 ↔ J603-2
J408-12 ↔ J603-1
Continuity check of HARNESS-ASSY P/H2 Replace Replace
13 Disconnect the P/J603 from PWBA MCU. SENSOR REGI. HARNESS-
Do all of the wiring below have normal (p.336) ASSY P/H2.
continuity?
P603-10 ↔ J102-3
P603-11 ↔ J102-2
P603-12 ↔ J102-1
24 VDC power supply check to PWBA MCU Replace PWBA Go to Step [15].
14 The voltage of P410-5/6 ↔ P410-7/8 on MCU. (p.404)
PWBA MCU is 24 VDC?
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
15 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
J502 from LV/HVPS.
Do all of the wiring below have normal
continuity?
J410-5 ↔ J502-5
J410-6 ↔ J502-6
J410-7 ↔ J502-7
J410-8 ↔ J502-8

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 EPSON AcuLaser C1100 Revision B

FIP-30 Step Check Yes No

Paper check at Gate section inside FUSER Remove the Go to Step [6].
† Panel Message 4 ASSY remaining paper
„ Jam E, F W A R N IN G
Allow FUSER ASSY to cool down and proceed to
step [5].
„ Jam D, E, F before performing work.
Remove FUSER ASSY. (p.388)
† Possible parts that caused the error
Is there any paper remaining at the Gate
section inside FUSER ASSY.
„ FUSER ASSY „ ROLL-REGI METAL
„ ROLL REGI RUBBER „ CLUTCH ASSY REGI
5 Does the error recur when the power is Go to Step[6]. End of
turned ON? procedure
„ HARNESS-ASSY P/H1 „ HARNESS-ASSY P/H2
„ MOTOR-PH „ PWBA MCU
6 Shape and operation check of ROLL-REGI Go to Step [7]. Replace ROLL
METAL in question.
„ 2ND BTR ASSY „ SHAFT-CENT 2ND
Open CHUTE ASSY-REAR.
„ FRAME ASSY BTR „ BEARING-BRUSH CAM
Is ROLL REGI RUBBER attached correctly?
„ Photoconductor Unit „ SENSOR FUSER IN
Also, do these parts rotate smoothly without
„ HARNESS ASSY ADC „ HARNESS ASSY 2BTR SENS any dirt or damage?
„ CAM ASSY-2ND „ SENSOR 2BTR RETRACT Turn by hand to check.
„ HARNESS ASSY MAIN „ MOT ASSY MICRO
Does the error recur when a test print is Go to Step [8]. End of
„ EXIT SENSOR (Sensor in Fuser) „ MOT ASSY FSR 7 made? procedure
„ LV/HVPS „ HARNESS ASSY MCU C/L
Check of paper position Go to Step [10]. Go to Step [9].
8 Is the leading edge of the paper stopping
† Troubleshooting
before REGI-ROLL?
Check of paper position Go to Step [17]. Go to Step [30].
Step Check Yes No
9 Has the leading edge of the paper passed
Check of the paper Replace with Go to Step [2].
1 Is the paper loaded in the paper tray wrinkled new, dry paper. through REGI-ROLL, and stopped before
Fuser Roll inside FUSER ASSY?
or torn?
Operation check of CLUTCH ASSY REGI Go to Step [14]. Go to Step [11].
2 Paper size setting check Go to Step [4]. Change the 10 Does CLUTCH ASSY REGI operate
Does the size of the paper in use match the paper size
setting, and normally?
size of the paper set on the control panel?
proceed to step Make a test print and confirm by the operating
[3]. noise.

Does the error recur when a test print is Go to Step [4]. End of
3 made? procedure

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Continuity check of HARNESS-ASSY P/H1 Go to Step [12]. Replace Shape and operation check of 2ND BTR ASSY Replace 2ND Go to Step [18].
11 Disconnect the P/J408 from PWBA MCU. HARNESS- 17 Remove 2ND BTR ASSY. (p.348) BTR ASSY and
Do all of the wiring below have normal ASSY P/H1. Is 2ND BTR ASSY damaged? other relevant
continuity? parts.
Are the SHAFT-CENT 2ND, FRAME ASSY
J408-3 ↔ J603-10 BTR and BEARING-BRUSH CAM
J408-4 ↔ J603-9 damaged? Does any of them operate
abnormally?
Continuity check of HARNESS-ASSY P/H2 Go to Step [13]. Replace
12 Check after replacement of Go to Step [19]. End of
Disconnect P/J603. HARNESS-
ASSY P/H2.
18 Photoconductor Unit procedure
Do all of the wiring below have normal
continuity? Replace Photoconductor Unit.
P603-3 ↔ P203-2 Does the error recur when a test print is made?
P603-4 ↔ P203-1 Operation check of SENSOR FUSER IN Go to Step [23]. Go to Step [20].
19 The voltage of P418-2 ↔ P418-1 on PWBA
Check of resistance value of CLUTCH Go to Step [36]. Replace
13 ASSY REGI CLUTCH MCU is 5 VDC when white paper is brought
ASSY REGI. to the sensor sensing area, and is 0 VDC when
Disconnect P/J203.
(p.329) paper is removed?
The winding resistance between the terminals
5 VDC power supply check to SENSOR Go to Step [21]. Go to Step [39].
of CLUTCH ASSY REGI is 144Ω ± 10%
(20°C)?
20 FUSER IN
The voltage of P418-3 ↔ P418-1 on PWBA
Check of 24 VDC power supply to Go to Step [15]. Go to Step [36].
14 MOTOR-PH
MCU is 5 VDC?

The voltage of P409-6 ↔ P409-5 on PWBA Continuity check of HARNESS ASSY ADC Go to Step [22]. Replace
MCU is 24 VDC?
21 Disconnect P/J418 and P/J620 from PWBA HARNESS
MCU. ASSY ADC.
Continuity check HARNESS-ASSY P/H1 Go to Step [16]. Replace
15 Disconnect the P/J409 from PWBA MCU. HARNESS- Do all of the wiring below have normal
ASSY P/H1. continuity?
Do all of the wiring below have normal
J418-1 ↔ J620-3
continuity?
J418-2 ↔ J620-2
Is the continuity normal between all terminals
of J409 ↔ P604? J418-3 ↔ J620-1

Check after replacement of MOTOR-PH Replace PWBA End of

16 Replace MOTOR-PH. MCU. (p.404) procedure
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Continuity check of HARNESS ASSY Replace Replace Continuity check of HARNESS ASSY MAIN Go to Step [28]. Repair broken
22 2BTR SENS SENSOR HARNESS 27 Disconnect the P/J403 from PWBA MCU. or shorted part.
Disconnect P/J620 from HARNESS ASSY FUSER IN. ASSY 2BTR Do all of the wiring below have normal
2BTR SENS. (p.344) SENS. continuity?
Do all of the wiring below have normal J403-1 ↔ J600-3
continuity? J403-2 ↔ J600-2
P620-1 ↔ J111-3 J403-3 ↔ J600-1
P620-2 ↔ J111-2
24 VDC power supply check to MOT ASSY Go to Step [29]. Go to Step [36].
P620-3 ↔ J111-1 28 MICRO (2ND BTR Retract Motor)
Shape and operation check of CAM ASSY- Go to Step [24]. Replace CAM The voltage of P403-3 ↔ P403-2 on PWBA
23 2ND ASSY-2ND. MCU is 24 VDC?
Does CAM ASSY-2ND move smoothly (p.350)
Check after replacement of MOT ASSY Replace PWBA End of
without any damage, and does it enter the 29 MICRO MCU. (p.407) procedure
sensor sensing area?
Replace MOT ASSY MICRO. (p.399)
Operation check of SENSOR 2BTR Go to Step [27]. Go to Step [25].
24 RETRACT
Does the error recur when a test print is made?
Operation check of EXIT SENSOR in Go to Step [33]. Go to Step [31].
Remove 2ND BTR ASSY. (p.348) 30 FUSER ASSY
The voltage of P418-6 ↔ P418-5 on PWBA
MCU is 0 VDC when CAM ASSY-2ND The voltage of P417-8 ↔ P417-7 on PWBA
enters the sensing area of SENSOR 2BTR MCU is 0 VDC when ACTUATOR enters the
RETRACT, and is 5 VDC when it leaves the sensing area of EXIT SENSOR, and is
sensing area? 5 VDC when it leaves the sensing area?
5 VDC power supply check to EXIT Go to Step [32]. Go to Step [38].
25 5 VDC power supply check to SENSOR
2BTR RETRACT
Go to Step [26]. Go to Step [39]. 31 SENSOR in FUSER ASSY
W A R N IN G
Disconnect P/J418 from PWBA MCU. Allow FUSER ASSY to cool down
The voltage of P418-4 ↔ P418-5 on PWBA before performing work.
MCU is 5 VDC? Remove FUSER ASSY. (p.388)
The voltage of connector J614A-7 ↔ J614A-6
Continuity check of HARNESS ASSY ADC Replace Replace
26 Disconnect P/J418 from PWBA MCU. SENSOR 2BTR HARNESS
that connects FUSER ASSY on the printer is 5
VDC?
Do all of the wiring below have normal RETRACT. ASSY ADC.
continuity? (p.356)
J418-4 ↔ J112-3
J418-5 ↔ J112-2
J418-6 ↔ J112-1

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Continuity check of HARNESS ASSY Replace EXIT Replace FUSER 24 VDC power supply check to PWBA MCU Replace PWBA Go to Step [37].
32 FUSER SENS and HARNESS ASSY SENSOR. ASSY. (p.388) 36 The voltage of P410-5/6 ↔ P410-7/8 on MCU. (p.404)
FUSER in FUSER ASSY PWBA MCU is 24 VDC?
W A R N IN G
Allow FUSER ASSY to cool down
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
before performing work. 37 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Remove FUSER ASSY. (p.388) J502 from LV/HVPS.
Disconnect P/J619 and P/J110 in FUSER Do all of the wiring below have normal
ASSY. continuity?
Do all of the wiring below have normal J410-5 ↔ J502-5
continuity?
J410-6 ↔ J502-6
P619-1 ↔ J110-3
J410-7 ↔ J502-7
P619-2 ↔ J110-2
J410-8 ↔ J502-8
P619-3 ↔ J110-1
J619-3 ↔ P614A-7 Continuity check of HARNESS ASSY Go to Step [39]. Repair broken
38 MCU C/L or shorted part.
J619-2 ↔ P614A-8
W A R N IN G
Allow FUSER ASSY to cool down
J619-1 ↔ P614A-9
before performing work.
Shape and operation check of FUSER Go to Step [34]. Replace FUSER
33 ASSY parts ASSY. (p.388)
Remove FUSER ASSY. (p.388)
W A R N IN G
Disconnect the P/J417 from PWBA MCU.
Allow FUSER ASSY to cool down
Do all of the wiring below have normal
before performing work.
continuity?
Remove FUSER ASSY. (p.388) J417-6 ↔ J614A-7
Are the gears, FUSER ROLL, EXIT ROLL, J417-7 ↔ J614A-6
PINCH ROLL and other parts in FUSER
5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [40].
ASSY attached correctly?
Also, do these parts rotate smoothly without
39 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
any dirt or damage? MCU is 5 VDC?
Turn by hand to check. Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
24 VDC power supply check to MOT ASSY Go to Step [35]. Go to Step [36].
40 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
34 FSR (Fuser Motor) J502 from LV/HVPS.
The voltage of P404-6 ↔ P404-5 on PWBA Do all of the wiring below have normal
MCU is 24 VDC? continuity?
J410-3 ↔ J502-3
Check after replacement of MOT ASSY FSR Replace PWBA End of
35 Replace MOT ASSY FSR. (p.395) MCU. (p.404) procedure J410-4 ↔ J502-4
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-31 Step Check Yes No

Paper check at Gate section inside FUSER Remove the Go to Step [6].
† Panel Message 4 ASSY remaining paper
„ Jam C, E, F W A R N IN G
Allow FUSER ASSY to cool down and proceed to
step [5].
„ Jam D, E, F before performing work.
Remove FUSER ASSY. (p.388)
† Possible parts that caused the error
Is there any paper remaining at the Gate
section inside FUSER ASSY.
„ FUSER ASSY „ ROLL-REGI METAL
„ ROLL REGI RUBBER „ CLUTCH ASSY REGI
5 Does the error recur when the power is Go to Step[6]. End of
turned ON? procedure
„ HARNESS-ASSY P/H1 „ HARNESS-ASSY P/H2
„ MOTOR-PH „ PWBA MCU
6 Shape and operation check of ROLL-REGI Go to Step [7]. Replace ROLL
METAL in question.
„ 2ND BTR ASSY „ SHAFT-CENT 2ND
Open CHUTE ASSY-REAR.
„ FRAME ASSY BTR „ BEARING-BRUSH CAM
Is ROLL REGI RUBBER attached correctly?
„ Photoconductor Unit „ SENSOR FUSER IN
Also, do these parts rotate smoothly without
„ HARNESS ASSY ADC „ HARNESS ASSY 2BTR SENS any dirt or damage?
„ CAM ASSY-2ND „ SENSOR 2BTR RETRACT Turn by hand to check.
„ HARNESS ASSY MAIN „ MOT ASSY MICRO
Does the error recur when a test print is Go to Step [8]. End of
„ EXIT SENSOR (Sensor in Fuser) „ MOT ASSY FSR 7 made? procedure
„ LV/HVPS „ HARNESS ASSY MCU C/L
Check of paper position Go to Step [10]. Go to Step [9].
8 Is the leading edge of the paper stopping
† Troubleshooting
before REGI-ROLL?
Check of paper position Go to Step [17]. Go to Step [30].
Step Check Yes No
9 Has the leading edge of the paper passed
Check of the paper Replace with Go to Step [2].
1 Is the paper loaded in the paper tray wrinkled new, dry paper. through REGI-ROLL, and stopped before
Fuser Roll inside FUSER ASSY?
or torn?
Operation check of CLUTCH ASSY REGI Go to Step [14]. Go to Step [11].
2 Paper size setting check Go to Step [4]. Change the 10 Does CLUTCH ASSY REGI operate
Does the size of the paper in use match the paper size
setting, and normally?
size of the paper set on the control panel?
proceed to step Make a test print and confirm by the operating
[3]. noise.

Does the error recur when a test print is Go to Step [4]. End of
3 made? procedure

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Continuity check of HARNESS-ASSY P/H1 Go to Step [12]. Replace Shape and operation check of 2ND BTR ASSY Replace 2ND Go to Step [18].
11 Disconnect the P/J408 from PWBA MCU. HARNESS- 17 Remove 2ND BTR ASSY. (p.348) BTR ASSY and
Do all of the wiring below have normal ASSY P/H1. Is 2ND BTR ASSY damaged? other relevant
continuity? parts.
Are SHAFT-CENT 2ND, FRAME ASSY
J408-3 ↔ J603-10 BTR and BEARING-BRUSH CAM
J408-4 ↔ J603-9 damaged? Does any of them operate
abnormally?
Continuity check of HARNESS-ASSY P/H2 Go to Step [13]. Replace
12 Check after replacement of Go to Step [19]. End of
Disconnect P/J603. HARNESS-
ASSY P/H2.
18 Photoconductor Unit procedure
Do all of the wiring below have normal
continuity? Replace Photoconductor Unit.
P603-3 ↔ P203-2 Does the error recur when a test print is made?
P603-4 ↔ P203-1 Operation check of SENSOR FUSER IN Go to Step [23]. Go to Step [20].
19 The voltage of P418-2 ↔ P418-1 on PWBA
Check of resistance value of CLUTCH Go to Step [36]. Replace
13 ASSY REGI CLUTCH MCU is 5 VDC when white paper is brought
ASSY REGI. to the sensor sensing area, and is
Disconnect P/J203.
0 VDC when paper is removed?
Is the winding resistance between the (p.329)
5 VDC power supply check to SENSOR Go to Step [21]. Go to Step [39].
terminals of CLUTCH ASSY REGI is 144Ω ±
10% (20°C)?
20 FUSER IN
The voltage of P418-3 ↔ P418-1 on PWBA
Check of 24 VDC power supply to Go to Step [15]. Go to Step [36].
14 MOTOR-PH
MCU is 5 VDC?

The voltage of P409-6 ↔ P409-5 on PWBA Continuity check of HARNESS ASSY ADC Go to Step [22]. Replace
MCU is 24 VDC?
21 Disconnect P/J418 and P/J620 from PWBA HARNESS
MCU. ASSY ADC.
Continuity check HARNESS-ASSY P/H1 Go to Step [16]. Replace
15 Disconnect the P/J409 from PWBA MCU. HARNESS- Do all of the wiring below have normal
ASSY P/H1. continuity?
Do all of the wiring below have normal
J418-1 ↔ J620-3
continuity?
J418-2 ↔ J620-2
Is the continuity normal between all terminals
of J409 ↔ P604? J418-3 ↔ J620-1

Check after replacement of MOTOR-PH Replace PWBA End of

16 Replace MOTOR-PH. MCU. (p.404) procedure
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Continuity check of HARNESS ASSY Replace Replace Continuity check of HARNESS ASSY MAIN Go to Step [28]. Repair broken
22 2BTR SENS SENSOR HARNESS 27 Disconnect the P/J403 from PWBA MCU. or shorted part.
Disconnect P/J620 from HARNESS ASSY FUSER IN. ASSY 2BTR Do all of the wiring below have normal
2BTR SENS. (p.344) SENS. continuity?
Do all of the wiring below have normal J403-1 ↔ J600-3
continuity? J403-2 ↔ J600-2
P620-1 ↔ J111-3 J403-3 ↔ J600-1
P620-2 ↔ J111-2
24 VDC power supply check to MOT ASSY Go to Step [29]. Go to Step [36].
P620-3 ↔ J111-1 28 MICRO (2ND BTR Retract Motor)
Shape and operation check of CAM ASSY- Go to Step [24]. Replace CAM The voltage of P403-3 ↔ P403-2 on PWBA
23 2ND ASSY-2ND. MCU is 24 VDC?
Does CAM ASSY-2ND move smoothly (p.350)
Check after replacement of MOT ASSY Replace PWBA End of
without any damage, and does it enter the 29 MICRO MCU. (p.407) procedure
sensor sensing area?
Replace MOT ASSY MICRO. (p.399)
Operation check of SENSOR 2BTR Go to Step [27]. Go to Step [25].
24 RETRACT
Does the error recur when a test print is made?
Operation check of EXIT SENSOR in Go to Step [33]. Go to Step [31].
Remove 2ND BTR ASSY. (p.348) 30 FUSER ASSY
The voltage of P418-6 ↔ P418-5 on PWBA
MCU is 0 VDC when CAM ASSY-2ND The voltage of P417-8 ↔ P417-7 on PWBA
enters the sensing area of SENSOR 2BTR MCU is 0 VDC when ACTUATOR enters the
RETRACT, and is 5 VDC when it leaves the sensing area of EXIT SENSOR, and is 5 VDC
sensing area? when it leaves the sensing area?
5 VDC power supply check to EXIT Go to Step [32]. Go to Step [38].
25 5 VDC power supply check to SENSOR
2BTR RETRACT
Go to Step [26]. Go to Step [39]. 31 SENSOR in FUSER ASSY
W A R N IN G
Disconnect P/J418 from PWBA MCU. Allow FUSER ASSY to cool down
The voltage of P418-4 ↔ P418-5 on PWBA before performing work.
MCU is 5 VDC? Remove FUSER ASSY. (p.388)
The voltage of connector J614A-7 ↔ J614A-6
Continuity check of HARNESS ASSY ADC Replace Replace
26 Disconnect P/J418 from PWBA MCU. SENSOR 2BTR HARNESS
that connects FUSER ASSY on the printer is 5
VDC?
Do all of the wiring below have normal RETRACT. ASSY ADC.
continuity? (p.356)
J418-4 ↔ J112-3
J418-5 ↔ J112-2
J418-6 ↔ J112-1

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Continuity check of HARNESS ASSY Replace EXIT Replace FUSER 24 VDC power supply check to PWBA MCU Replace PWBA Go to Step [37].
32 FUSER SENS and HARNESS ASSY SENSOR. ASSY. (p.388) 36 The voltage of P410-5/6 ↔ P410-7/8 on MCU. (p.404)
FUSER in FUSER ASSY PWBA MCU is 24 VDC?
W A R N IN G
Allow FUSER ASSY to cool down
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
before performing work. 37 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Remove FUSER ASSY. (p.388) J502 from LV/HVPS.
Disconnect P/J619 and P/J110 in FUSER Do all of the wiring below have normal
ASSY. continuity?
Do all of the wiring below have normal J410-5 ↔ J502-5
continuity?
J410-6 ↔ J502-6
P619-1 ↔ J110-3
J410-7 ↔ J502-7
P619-2 ↔ J110-2
J410-8 ↔ J502-8
P619-3 ↔ J110-1
J619-3 ↔ P614A-7 Continuity check of HARNESS ASSY Go to Step [39]. Repair broken
38 MCU C/L or shorted part.
J619-2 ↔ P614A-8
W A R N IN G
Allow FUSER ASSY to cool down
J619-1 ↔ P614A-9
before performing work.
Shape and operation check of FUSER Go to Step [34]. Replace FUSER
33 ASSY parts ASSY. (p.388)
Remove FUSER ASSY. (p.388)
W A R N IN G
Disconnect the P/J417 from PWBA MCU.
Allow FUSER ASSY to cool down
Do all of the wiring below have normal
before performing work.
continuity?
Remove FUSER ASSY. (p.388) J417-6 ↔ J614A-7
Are the gears, FUSER ROLL, EXIT ROLL, J417-7 ↔ J614A-6
PINCH ROLL and other parts in FUSER
5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [40].
ASSY attached correctly?
Also, do these parts rotate smoothly without
39 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
any dirt or damage? MCU is 5 VDC?
Turn by hand to check. Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
24 VDC power supply check to MOT ASSY Go to Step [35]. Go to Step [36].
40 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
34 FSR (Fuser Motor) J502 from LV/HVPS.
The voltage of P404-6 ↔ P404-5 on PWBA Do all of the wiring below have normal
MCU is 24 VDC? continuity?
J410-3 ↔ J502-3
Check after replacement of MOT ASSY FSR Replace PWBA End of
35 Replace MOT ASSY FSR. (p.395) MCU. (p.404) procedure J410-4 ↔ J502-4
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-32 Step Check Yes No

Power supply check to SENSOR OHP Go to Step [7]. Go to Step [9].
† Panel Message 6 Disconnect the P/J408 from PWBA MCU.
„ Check Transparency The voltage of P408-9 ↔ P408-7 on PWBA
MCU is 5 VDC?
† Possible parts that caused the error
Continuity check of HARNESS-ASSY P/H1 Go to Step [8]. Replace
„ SENSOR OHP „ HARNESS-ASSY P/H1 7 Disconnect the P/J408 from PWBA MCU. HARNESS-
„ HARNESS-ASSY P/H2 „ PWBA MCU Do all of the wiring below have normal ASSY P/H1.
„ HARNESS ASSY MAIN „ LV/HVPS continuity?
J408-7 ↔ J603-6
† Troubleshooting J408-8 ↔ J603-5
J408-9 ↔ J603-4
Step Check Yes No
Continuity check of HARNESS-ASSY P/H2 Replace Replace
1 Check of transparency setting Go to Step [3]. Replace the 8 Disconnect the P/J603 from PWBA MCU. SENSOR OHP. HARNESS-
Does the transparency in use match the transparency in (p.334) ASSY P/H2.
Do all of the wiring below have normal
NVRAM setting (which type of transparency use with a one
continuity?
(with or without white margin) is enabled or that matches the
NVRAM P603-7 ↔ J101-3
disabled.)
settings, or P603-8 ↔ J101-2
change the P603-9 ↔ J101-1
NVRAM
5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [10].
setting and go to
[2].
9 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
MCU is 5 VDC?
Does the error recur when a test print is Go to Step[3]. End of
2 made? procedure
10 Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Check of dirt and foreign bodies on surface Clean to remove Go to Step [5].
3 of SENSOR OHP any dirt or
J502 from LV/HVPS.
foreign bodies, Do all of the wiring below have normal
Open COVER-P/H.
and go to step continuity?
Are there any dirt or foreign bodies on the
[4]. J410-3 ↔ J502-3
SENSOR surface?
J410-4 ↔ J502-4
Does the error recur when a test print is Go to Step[5]. End of
4 made? procedure
Operation check of SENSOR OHP Replace PWBA Go to Step [6].
5 The voltage of P408-8 ↔ P408-7 on PWBA MCU. (p.404)
MCU is 5 VDC when white paper is brought
to the sensor sensing area (transparency must
not be used), and becomes 0 VDC when paper
is removed?

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 EPSON AcuLaser C1100 Revision B

FIP-33 Step Check Yes No

Shape and operation check of ROLL-REGI Go to Step [5]. Replace ROLL
† Panel Message 4 METAL in question.
„ Jam E Open CHUTE ASSY-REAR.
Is ROLL REGI RUBBER attached correctly?
„ Jam D, E
Also, does this part rotate smoothly without
† Possible parts that caused the error any dirt or damage?
Turn by hand to check.
„ ROLL-REGI METAL „ ROLL REGI RUBBER
Does the error recur when a test print is Go to Step [6]. End of
„ 2ND BTR ASSY „ SHAFT-CENT 2ND 5 made? procedure
„ FRAME ASSY BTR „ BEARING-BRUSH CAM
Check of paper position Go to Step [7]. Go to Step [24].
„ Photoconductor Unit „ SENSOR FUSER IN 6 Is the leading edge of the paper passing
„ HARNESS ASSY ADC „ HARNESS ASSY 2BTR SENS through REGI ROLL?
„ CAM ASSY-2ND „ SENSOR 2BTR RETRACT
Shape and operation check of 2ND BTR ASSY Replace 2ND Go to Step [8].
„ PWBA MCU „ HARNESS ASSY MAIN 7 Remove 2ND BTR ASSY. (p.348) BTR ASSY and
„ LV/HVPS „ MOT ASSY MICRO
Is 2ND BTR ASSY damaged? other relevant
„ CLUTCH ASSY REGI „ HARNESS-ASSY P/H1 Are SHAFT-CENT 2ND, FRAME ASSY
parts.
„ HARNESS-ASSY P/H2 „ MOTOR-PH BTR and BEARING-BRUSH CAM
damaged? Does any of them operate
† Troubleshooting abnormally?
Check after replacement of Go to Step [9]. End of
Step Check Yes No 8 Photoconductor Unit procedure
Check of the paper Replace with Go to Step [2].
1 Is the paper loaded in the paper tray wrinkled new, dry paper.
Replace Photoconductor Unit.
Does the error recur when a test print is made?
or torn?
Operation check of SENSOR FUSER IN Go to Step [13]. Go to Step [10].
Paper size setting check Go to Step [4]. Change the 9 The voltage of P418-2 ↔ P418-1 on PWBA
2 Does the size of the paper in use match the paper size MCU is 5 VDC when white paper is brought
size of the paper set on the control panel? setting, and to the sensor sensing area, and becomes 0
proceed to step VDC when paper is removed?
[3].
5 VDC power supply check to SENSOR Go to Step [11]. Go to Step [17].
3 Does the error recur when a test print is Go to Step [4]. End of 10 FUSER IN
made? procedure
The voltage of P418-3 ↔ P418-1 on PWBA
MCU is 5 VDC?

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Continuity check of HARNESS ASSY ADC Go to Step [12]. Replace Continuity check of HARNESS ASSY ADC Replace Replace
11 Disconnect P/J418 and P/J620 from PWBA HARNESS 16 Disconnect P/J418 from PWBA MCU. SENSOR 2BTR HARNESS
MCU. ASSY ADC. Do all of the wiring below have normal RETRACT. ASSY ADC.
Do all of the wiring below have normal continuity? (p.356)
continuity? J418-4 ↔ J112-3
J418-1 ↔ J620-3 J418-5 ↔ J112-2
J418-2 ↔ J620-2 J418-6 ↔ J112-1
J418-3 ↔ J620-1
5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [18].
Continuity check of HARNESS ASSY Replace Replace 17 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
12 2BTR SENS SENSOR HARNESS MCU is 5 VDC?
Disconnect P/J620 from HARNESS ASSY FUSER IN. ASSY 2BTR
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
2BTR SENS. (p.344) SENS. 18 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Do all of the wiring below have normal
J502 from LV/HVPS.
continuity?
Do all of the wiring below have normal
P620-1 ↔ J111-3
continuity?
P620-2 ↔ J111-2
J410-3 ↔ J502-3
P620-3 ↔ J111-1
J410-4 ↔ J502-4
Shape and operation check of CAM ASSY- Go to Step [14]. Replace CAM
13 2ND ASSY-2ND. 19 Continuity check of HARNESS ASSY MAIN Go to Step [20]. Repair broken
Disconnect the P/J403 from PWBA MCU. or shorted part.
Does CAM ASSY 2ND move smoothly (p.350)
without any damage, and does it enter the Do all of the wiring below have normal
sensor sensing area? continuity?
J403-1 ↔ J600-3
Operation check of SENSOR 2BTR Go to Step [19]. Go to Step [15].
14 RETRACT
J403-2 ↔ J600-2
J403-3 ↔ J600-1
Remove 2ND BTR ASSY. (p.348)
The voltage of P418-6 ↔ P418-5 on PWBA 24 VDC power supply check to MOT ASSY Go to Step [21]. Go to Step [22].
MCU is 0 VDC when Actuator of CAM
20 MICRO (2nd BTR Retract Motor)
ASSY-2ND enters the sensing area of The voltage of P403-3 ↔ P403-2 on PWBA
SENSOR 2BTR RETRACT, and is 5 VDC MCU is 24 VDC?
when it leaves the sensing area?
Check after replacement of MOT ASSY Replace PWBA End of
5 VDC power supply check to SENSOR Go to Step [16]. Go to Step [17]. 21
15 2BTR RETRACT
MICRO
Replace MOT ASSY MICRO. (p.399)
MCU. (p.404) procedure

Disconnect P/J418 from PWBA MCU. Does the error recur when a test print is made?
The voltage of P418-4 ↔ P418-5 on PWBA
24 VDC power supply check to PWBA MCU Replace PWBA Go to Step [23].
MCU is 5 VDC? 22 The voltage of P410-5/6 ↔ P410-7/8 on MCU. (p.404)
PWBA MCU is 24 VDC?

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken Check of 24 VDC power supply to Go to Step [29]. Go to Step [22].
23 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part. 28 MOTOR-PH
J502 from LV/HVPS. The voltage of P409-6 ↔ P409-5 on PWBA
Do all of the wiring below have normal MCU is 24 VDC?
continuity? Continuity check of HARNESS-ASSY P/H1 Go to Step [30]. Replace
J410-5 ↔ J502-5 29 Disconnect the P/J409 from PWBA MCU. HARNESS-
J410-6 ↔ J502-6 Do all of the wiring below have normal ASSY P/H1.
J410-7 ↔ J502-7 continuity?
J410-8 ↔ J502-8 J409-1 ↔ P604-6
Operation check of CLUTCH ASSY REGI Go to Step [28]. Go to Step [25]. J409-2 ↔ P604-5
24 Does CLUTCH ASSY REGI operate J409-3 ↔ P604-4
normally? J409-4 ↔ P604-3
Make a test print and confirm by the operating J409-5 ↔ P604-2
noise. J409-6 ↔ P604-1
Continuity check of HARNESS-ASSY P/H1 Go to Step [26]. Replace
25 Disconnect the P/J408 from PWBA MCU. HARNESS- 30 Check after replacement of MOTOR-PH
Replace MOTOR-PH. (p.337)
Replace PWBA
MCU. (p.404)
End of
procedure
Do all of the wiring below have normal ASSY P/H1.
Does the error recur when a test print is made?
continuity?
J408-3 ↔ J603-10
J408-4 ↔ J603-9
Continuity check of HARNESS-ASSY P/H2 Go to Step [27]. Replace
26 Disconnect P/J603. HARNESS-
Do all of the wiring below have normal ASSY P/H2.
continuity?
P603-3 ↔ P203-2
P603-4 ↔ P203-1
Check of resistance value of CLUTCH Go to Step [22]. Replace
27 ASSY REGI CLUTCH
Disconnect P/J203. ASSY REGI.
The winding resistance between the terminals (p.329)
of CLUTCH ASSY REGI is 144Ω ± 10%
(20°C)?

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 EPSON AcuLaser C1100 Revision B

FIP-34 Step Check Yes No

Shape and operation check of ACTUATOR Go to Step [7]. Replace FUSER
† Panel Message 6 in EXIT SENSOR ASSY. (p.388)
„ Jam C Does ACTUATOR move smoothly and enter
the sensing area of EXIT SENSOR?
„ Jam D
Operation check of EXIT SENSOR in Go to Step [13]. Go to Step [8].
† Possible parts that caused the error 7 FUSER ASSY
The voltage of P417-8 ↔ P417-7 on PABW
„ EXIT SENSOR (Sensor in Fuser) „ FUSER ASSY MCU is 0 VDC when ACTUATOR on EXIT
„ HARNESS ASSY MCU C/L „ PWBA MCU SENSOR is moved and entered the sensing
„ LV/HVPS „ MOT ASSY FSR area of EXIT SENSOR (when there is no
paper), and is 5 VDC when the actuator leaves
† Troubleshooting the sensing area (when there is paper)?
5 VDC power supply check to EXIT Go to Step [9]. Go to step [10]
Step Check Yes No 8 SENSOR in FUSER ASSY
W A R N IN G
Check of the paper Replace with Go to Step [2]. Allow FUSER ASSY to cool down
1 Is the paper loaded in the paper tray wrinkled new, dry paper. before performing work.
or torn? Remove FUSER ASSY. (p.388)
Paper size setting check Go to Step [4]. Change the The voltage of connector J614A-7 ↔ J614A-6
2 Does the size of the paper in use match the paper size on the printer (connected to FUSER ASSY) is
setting, and 5 VDC?
size of the paper set on the control panel?
proceed to step Continuity check of HARNESS ASSY Replace EXIT Replace FUSER
[3]. 9 FUSER SENS and HARNESS ASSY SENSOR. ASSY. (p.388)
Does the error recur when a test print is Go to Step [4]. End of FUSER in FUSER ASSY
3 made? procedure
W A R N IN G
Allow FUSER ASSY to cool down
before performing work.
Paper check at Gate section inside FUSER Remove the Go to Step [6].
4 ASSY paper, and go to Remove FUSER ASSY. (p.388)
W A R N IN G
Allow FUSER ASSY to cool down [5]. Disconnect P/J619 and P/J110 in FUSER
ASSY.
before performing work.
Do all of the wiring below have normal
Remove FUSER ASSY. (p.388)
continuity?
Is there any paper remaining at the Gate
P619-1 ↔ J110-3
section inside FUSER ASSY.
P619-2 ↔ J110-2
Does the error recur when a test print is Go to Step [6]. End of P619-3 ↔ J110-1
5 made? procedure
J619-3 ↔ P614A-7
J619-2 ↔ P614A-8
J619-1 ↔ P614A-9

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Continuity check of HARNESS ASSY Go to Step [11]. Repair broken Check after replacement of MOT ASSY FSR Replace PWBA End of
10 MCU C/L or shorted part. 15 Replace MOT ASSY FSR. (p.395) MCU. (p.404) procedure
W A R N IN G
Allow FUSER ASSY to cool down Does the error recur when a test print is made?
before performing work.
24 VDC power supply check to PWBA MCU Replace PWBA Go to Step [17].
Remove FUSER ASSY. (p.388) 16 The voltage of P410-5/6 ↔ P410-7/8 on MCU. (p.404)
Disconnect P/J417 from PWBA MCU. PWBA MCU is 24 VDC?
Do all of the wiring below have normal
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
continuity? 17 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
J417-6 ↔ J614A-7
J502 from LV/HVPS.
J417-7 ↔ J614A-6
Do all of the wiring below have normal
5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [12].
11 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
continuity?
J410-5 ↔ J502-5
MCU is 5 VDC? J410-6 ↔ J502-6
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken J410-7 ↔ J502-7
12 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part. J410-8 ↔ J502-8
J502 from LV/HVPS.
Do all of the wiring below have normal
continuity?
J410-3 ↔ J502-3
J410-4 ↔ J502-4
Shape and operation check of FUSER Go to Step [14]. Replace FUSER
13 ASSY parts ASSY. (p.388)
W A R N IN G
Allow FUSER ASSY to cool down
before performing work.
Remove FUSER ASSY. (p.388)
Are the gears, Fuser Roll, Exit Roll, Pinch
Roll and other parts in FUSER ASSY attached
correctly?
Also, do these parts rotate smoothly without
any dirt or damage?
Turn by hand to check.
24 VDC power supply check to MOT ASSY Go to Step [15]. Go to Step [16].
14 FSR (Fuser Motor)
The voltage of P404-6 ↔ P404-5 on PWBA
MCU is 24 VDC?

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 EPSON AcuLaser C1100 Revision B

FIP-35 Step Check Yes No

Check of ROLLER ASSY INVERTER, Go to Step [5]. Replace or re-
† Panel Message 3 ROLL PINCH DUP, and ROLL ASSY attach ROLL in
„ Jam D, E, DM PINCH DUP question, and go
Open Duplex. to [4].
† Possible parts that caused the error Are ROLLER ASSY INVERTER, ROLL
PINCH DUP, and ROLL ASSY PINCH DUP
„ ROLLER ASSY INVERTER „ ROLL PINCH DUP
attached correctly?
„ ROLL ASSY PINCH DUP „ FUSER ASSY Also, do these parts rotate smoothly without
„ MOTOR ASSY DUP INV „ ROLLER ASSY DUP any dirt or damage?
„ ROLLER ASSY DUP OUT „ ROLL PINCH DUP Turn by hand to check.
„ MOTOR ASSY DUP „ PWBA DUP-L Does the error recur when a test print is Go to Step [5]. End of
„ ROLL ASSY-PRE REGI „ ROLL-PINCH 4 made in the duplex mode? procedure
„ ACTUATOR-REGI „ SENSOR REGI Check of paper position Go to Step [6]. Replace FUSER
„ HARNESS-ASSY P/H1 „ HARNESS-ASSY P/H2 5 Is the leading edge of the paper passing ASSY. (p.388)
„ PWBA MCU „ LV/HVPS through ROLLER ASSY INVERTER?
„ MOTOR-PH „ HARNESS ASSY MAIN Check of transmission of drive force of Go to Step [7]. Replace the
„ CLUTCH ASSY PRE REGI 6 ROLLER ASSY INVERTER section gear in question.
Open Duplex.
† Troubleshooting Remove COVER-INV, COVER-R DUP, and
COVER-L DUP (p.415), (p.413) and (p.414)
Step Check Yes No Are all gears that transmit rotation of MOTOR
Paper check at SENSOR UPPER PASS section Remove the Go to Step [9]. ASSY DUP INV to ROLLER ASSY
1 Open Duplex. remaining paper INVERTER turning smoothly?
and proceed to Turn gears by hand to check.
Is there any paper remaining at the SENSOR
UPPER PASS section? Step [2].
Check after replacement of MOTOR ASSY Go to Step [8]. End of
Check of Duplex attachment Go to Step [3]. End of
7 DUP INV procedure
2 Open and close Duplex. procedure Replace MOTOR ASSY DUP INV. (p.424)
Does the error recur when a test print is made
Also, disconnect and re-attach the connector
in the duplex mode?
from the printer to Duplex.
Paper check at SENSOR LOW PASS section Remove the Go to Step [14].
Does the error recur when a test print is made
in the duplex mode?
8 Open Duplex. remaining paper
Is there any paper remaining at the SENSOR and proceed to
LOW PASS section? Step [9].

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Check of ROLLER ASSY DUP, ROLLER Go to Step [11]. Replace or re- Does the error recur when a test print is Go to Step [16]. End of
9 ASSY DUP OUT and ROLL PINCH DUP attach ROLL in 15 made? procedure
Open Duplex. question, and go
Check of paper position Go to Step [17]. Go to Step [29].
Are ROLLER ASSY DUP, ROLLER ASSY to [10]. 16 Is the leading edge of the paper passing
DUP OUT, and ROLL PINCH DUP attached through PRE REGI ROLL?
correctly?
Operation check of ACTUATOR-REGI Go to Step [18]. Replace
Also, do these parts rotate smoothly without
any dirt or damage?
17 Does ACTUATOR-REGI move smoothly ACTUATOR-
without any damage? Does it enter the sensor REGI. (p.335)
Turn by hand to check.
sensing area when there is paper? Does it
Does the error recur when a test print is Go to Step [11]. End of
10 made in the duplex mode? procedure
leave the sensor sensing area when there is no
paper?
Check of transmission of drive force to Go to Step [12]. Replace the
11 ROLLER ASSY DUP gear in question. 18 Operation check of SENSOR REGI
The voltage of P408-12 ↔ P408-11 on
Go to Step [24]. Go to Step [19].

Open Duplex. PWBA MCU is 0 VDC when ACTUATOR

Remove COVER-L DUP. (p.414) REGI enters the sensor sensing area, and is 5
Are all gears that transmit rotation of MOTOR VDC when it leaves the sensing area?
ASSY DUP (Lower Roll Motor) to ROLLER 5 VDC power supply check to SENSOR REGI Go to Step [20]. Go to Step [22].
ASSY DUP turning smoothly? 19 The voltage of P408-10 ↔ P408-11 on
Turn gears by hand to check. PWBA MCU is 5 VDC?
Check after replacement of MOTOR ASSY Go to Step [13]. End of
12 DUP (Lower Roll Motor) procedure 20 Continuity check of HARNESS-ASSY P/H1 Go to Step [21]. Replace
HARNESS-
Disconnect the P/J408 from PWBA MCU.
Replace MOTOR ASSY DUP. (p.443) ASSY P/H1.
Do all of the wiring below have normal
Does the error recur when a test print is made continuity?
in the duplex mode?
J408-10 ↔ J603-3
Check after replacement of PWBA DUP-L Go to Step [14]. End of J408-11 ↔ J603-2
13 Replace PWBA DUP-L. (p.442) procedure J408-12 ↔ J603-1
Does the error recur when a test print is made
Continuity check of HARNESS-ASSY P/H2 Replace Replace
in the duplex mode? 21 Disconnect P/J603 and P/J102 from PWBA SENSOR HARNESS-
Shape and operation check of ROLL Go to Step [15]. Replace ROLL REGI. (p.336) ASSY P/H2.
14 ASSY-PRE REGI and ROLL-PINCH in question.
MCU.
Do all of the wiring below have normal
Open CHUTE ASSY-REAR. continuity?
Are ROLL ASSY-PRE REGI and ROLL- P603-10 ↔ J102-3
PINCH attached correctly? P603-11 ↔ J102-2
Also, do these parts rotate smoothly without P603-12 ↔ J102-1
any dirt or damage?
Turn by hand to check.

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [23]. Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
22 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404) 28 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
MCU is 5 VDC? J502 from LV/HVPS.
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken Do all of the wiring below have normal
23 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part. continuity?
J502 from LV/HVPS. J410-5 ↔ J502-5
Do all of the wiring below have normal J410-6 ↔ J502-6
continuity? J410-7 ↔ J502-7
J410-3 ↔ J502-3 J410-8 ↔ J502-8
J410-4 ↔ J502-4 Continuity check of HARNESS-ASSY P/H1 Go to Step [30]. Replace
24 VDC power supply check to P/H MOTOR Go to Step [25]. Go to Step [27].
29 Disconnect the P/J408 from PWBA MCU. HARNESS-
24 The voltage of P409-6 ↔ P409-5 on PWBA Do all of the wiring below have normal ASSY P/H1.
MCU is 24 VDC? continuity?
J408-1 ↔ J603-12
Continuity check of HARNESS-ASSY P/H1 Go to Step [26]. Replace
25 Disconnect the P/J409 from PWBA MCU. HARNESS- J408-2 ↔ J603-11
ASSY P/H1. Continuity check of HARNESS-ASSY P/H2 Go to Step [31]. Replace
Do all of the wiring below have normal
continuity?
30 Disconnect P/J603. HARNESS-
J409-1 ↔ P604-6 Do all of the wiring below have normal ASSY P/H2.
J409-2 ↔ P604-5 continuity?
J409-3 ↔ P604-4 P603-1 ↔ P202-2
J409-4 ↔ P604-3 P603-2 ↔ P202-1
J409-5 ↔ P604-2 Check of resistance value of CLUTCH Go to Step [27]. Replace
J409-6 ↔ P604-1 31 ASSY PRE REGI CLUTCH
Disconnect P/J202. ASSY PRE
Check after replacement of MOTOR-PH Replace PWBA End of
26 Replace MOTOR-PH. (p.337) MCU. (p.404) procedure The winding resistance between the terminals REGI. (p.338)
of CLUTCH ASSY PRE REGI is 144Ω ±
Does the error recur when a test print is made?
10% (20°C)?
24 VDC power supply check to PWBA MCU Replace PWBA Go to Step [28].
27 The voltage of P410-5/6 ↔ P410-7/8 on MCU. (p.404)
PWBA MCU is 24 VDC?

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 EPSON AcuLaser C1100 Revision B

FIP-36 Step Check Yes No

Check of transmission of drive force to Go to Step [5]. Replace the
† Panel Message 4 ROLLER ASSY DUP gear in question.
„ Jam DM Open Duplex.
Remove COVER-L DUP. (p.414)
† Possible parts that caused the error
Are all gears that transmit rotation of MOTOR
„ SENSOR LOW PASS „ ROLLER ASSY DUP ASSY DUP (Lower Roll Motor) to ROLLER
ASSY DUP turning smoothly?
„ ROLLER ASSY DUP OUT „ ROLL PINCH DUP
Turn gears by hand to check.
„ ACTUATOR DUP „ MOTOR ASSY DUP
Operation check of ACTUATOR DUP Go to Step [6]. Replace
„ HARNESS-ASSY DUP2 „ HARNESS ASSY MAIN 5 Does ACTUATOR DUP move smoothly ACTUATOR
„ PWBA DUP-L „ PWBA MCU
without any damage? Does ACTUATOR DUP. (p.431)
„ LV/HVPS DUP leave the sensing area of the sensor when
there is paper? Does it enter the sensing area
† Troubleshooting when there is no paper?
Operation check of SENSOR LOW PASS Go to Step [7]. Go to Step [11].
Step Check Yes No 6 The voltage of P443-15 ↔ P443-14 on
Paper check at SENSOR LOW PASS section Remove the Go to Step [2].
1 Open Duplex. remaining paper
PWBA DUP-L is 0 VDC when ACTUATOR
enters the sensing area of SENSOR LOW
Is there any paper remaining at the SENSOR and proceed to PASS, and is 5 VDC when it leaves the
LOW PASS section? Step [2]. sensing area?
Continuity check of HARNESS-ASSY DUP2 Go to Step [8]. Replace
2 Check of ROLLER ASSY DUP, ROLLER
ASSY DUP OUT and ROLL PINCH DUP
Go to Step [4]. Replace or re-
attach ROLL in
7 Disconnect P/J443 from PWBA DUP-L. HARNESS-
Open Duplex. question, and go Is the continuity normal between all terminals ASSY DUP2.
Are ROLLER ASSY DUP, ROLLER ASSY to [3]. of J443 ↔ P607?
DUP OUT, and ROLL PINCH DUP attached Continuity check of HARNESS ASSY MAIN Go to Step [9]. Repair broken
correctly? 8 Disconnect the P/J420 from PWBA MCU. or shorted part.
Also, do these parts rotate smoothly without
Is the continuity normal between all terminals
any dirt or damage?
of J420 ↔ J607?
Turn by hand to check.
Check after replacement of PWBA DUP-L Replace PWBA End of
3 Does the error recur when a test print is Go to Step [4]. End of 9 Replace PWBA DUP-L. (p.442) MCU. (p.404) procedure
made in the duplex mode? procedure
Does the error recur when a test print is made
in the duplex mode?

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No

Check after replacement of MOTOR ASSY Go to Step [9]. End of
10 DUP (Lower Roll Motor) procedure
Replace MOTOR ASSY DUP. (p.443)
Does the error recur when a test print is made
in the duplex mode?
5 VDC power supply check to SENSOR Go to Step [12]. Go to Step [13].
11 LOW PASS
The voltage of P443-13 ↔ P443-14 on
PWBA DUP-L is 5 VDC?
Continuity check of HARNESS-ASSY DUP2 Replace Replace
12 Disconnect P/J443 from PWBA DUP-L. SENSOR LOW HARNESS-
Do all of the wiring below have normal PASS. (p.432) ASSY DUP2.
continuity?
J443-13 ↔ J123-3
J443-14 ↔ J123-2
J443-15 ↔ J123-1
5 VDC power supply check to PWBA DUP-L Replace PWBA Go to Step [14].
13 The voltage of P443-7 ↔ P443-8 on PWBA DUP-L. (p.442)
DUP-L is 5 VDC?
Continuity check of HARNESS ASSY MAIN Go to Step [15]. Repair broken
14 Disconnect the P/J420 from PWBA MCU. or shorted part.
Do all of the wiring below have normal
continuity?
J420-6 ↔ J607-7
J420-5 ↔ J607-8
5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [16].
15 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
MCU is 5 VDC?
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
16 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
J502 from LV/HVPS.
Do all of the wiring below have normal
continuity?
J410-3 ↔ J502-3
J410-4 ↔ J502-4

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 EPSON AcuLaser C1100 Revision B

FIP-37 Step Check Yes No

Check of ROLLER ASSY INVERTER, Go to Step [5]. Replace or re-
† Panel Message 3 ROLL PINCH DUP, and ROLL ASSY attach ROLL in
„ Jam C PINCH DUP question, and go
Open Duplex. to [4].
„ Jam D Are ROLLER ASSY INVERTER, ROLL
† Possible parts that caused the error PINCH DUP, and ROLL ASSY PINCH DUP
attached correctly?
„ SENSOR UPPER PASS „ ROLLER ASSY INVERTER Also, do these parts rotate smoothly without
„ ROLL PINCH DUP „ ROLL ASSY PINCH DUP any dirt or damage?
„ FUSER ASSY „ ACTUATOR INV Turn by hand to check.
„ MOTOR ASSY DUP INV „ HARNESS-ASSY DUP1 Does the error recur when a test print is Go to Step [5]. End of
„ HARNESS ASSY DUP2 „ HARNESS ASSY MAIN
4 made in the duplex mode? procedure
„ PWBA DUP-L „ PWBA MCU Check of paper position Go to Step [6]. Replace FUSER
„ LV/HVPS
5 Is the leading edge of the paper passing ASSY. (p.388)
through ROLLER ASSY INVERTER?
† Troubleshooting Check of transmission of drive force of Go to Step [7]. Replace the
6 ROLLER ASSY INVERTER section gear in question.
Step Check Yes No Open Duplex.
Paper check at SENSOR UPPER PASS section Remove the Go to Step [2]. Remove COVER-INV, COVER-R DUP, and
1 Open Duplex. remaining paper COVER-L DUP (p.415), (p.413) and (p.414)
Is there any paper remaining at the SENSOR and proceed to Are all gears that transmit rotation of MOTOR
UPPER PASS section? Step ASSY DUP INV to ROLLER ASSY
[2]. INVERTER turning smoothly?
Check of Duplex attachment Go to Step [3]. End of Turn gears by hand to check.
2 Open and close Duplex. procedure Operation check of ACTUATOR INV Go to Step [8]. Replace
Also, disconnect and re-attach the connector 7 Does ACTUATOR INV move smoothly ACTUATOR
from the printer to Duplex. without any damage? Does ACTUATOR INV. (p.421)
Does the error recur when a test print is made leave the sensing area of the sensor when there
in the duplex mode? is paper? Does it enter the sensing area when
there is no paper?
Operation check of SENSOR UPPER PASS Go to Step [12]. Go to Step [9].
8 The voltage of P444-10 ↔ P444-9 VDC on
PWBA DUP-L is 0 VDC when ACTUATOR
enters the sensing area of SENSOR UPPER
PASS, and is 5 VDC when it leaves the
sensing area?

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

5 VDC power supply check to SENSOR Go to Step [10]. Go to Step [15]. Continuity check of HARNESS ASSY DUP2 Go to Step [17]. Replace
9 UPPER PASS 16 Disconnect P/J443 from PWBA DUP-L. HARNESS
The voltage of P444-8 ↔ P444-9 on PWBA Do all of the wiring below have normal ASSY DUP2.
DUP-L is 5 VDC? continuity?
Continuity check of HARNESS-ASSY DUP1 Replace Replace J443-7 ↔ P607-6
10 Disconnect P/J444 from PWBA DUP-L. SENSOR HARNESS- J443-8 ↔ P607-5
Do all of the wiring below have normal UPPER PASS. ASSY DUP1.
Continuity check of HARNESS ASSY MAIN Go to Step [18]. Repair broken
continuity? (p.422) 17 Disconnect the P/J420 from PWBA MCU. or shorted part.
J444-6 ↔ J124-3 Do all of the wiring below have normal
J444-7 ↔ J124-2 continuity?
J444-8 ↔ J124-1 J420-6 ↔ J607-7
Check after replacement of MOTOR ASSY Go to Step [12]. End of J420-5 ↔ J607-8
11 DUP INV procedure 5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [19].
Replace MOTOR ASSY DUP INV. (p.424) 18 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
Does the error recur when a test print is made MCU is 5 VDC?
in the duplex mode?
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Check after replacement of PWBA DUP-L Go to Step [13]. End of 19
12 Replace PWBA DUP-L. (p.442) procedure
Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407)
J502 from LV/HVPS.
or shorted part.

Does the error recur when a test print is made Do all of the wiring below have normal
in the duplex mode? continuity?
Continuity check of HARNESS ASSY DUP2 Go to Step [14]. Replace J410-3 ↔ J502-3
13 Disconnect P/J443 from PWBA DUP-L. HARNESS J410-4 ↔ J502-4
Is the continuity normal between all terminals ASSY DUP2.
of J443 ↔ P607?
Continuity check of HARNESS ASSY MAIN Replace PWBA Repair broken
14 Disconnect the P/J420 from PWBA MCU. MCU. (p.404) or shorted part.
Is the continuity normal between all terminals
of J420 ↔ J607?
5 VDC power supply check to PWBA DUP-L Replace PWBA Go to Step [16].
15 The voltage of P443-7 ↔ P443-8 on PWBA DUP-L. (p.442)
DUP-L is 5 VDC?

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 EPSON AcuLaser C1100 Revision B

FIP-38 † Troubleshooting

† Panel Message Step Check Yes No

Check of error/status code Remove the Go to Step [3].
„ Jam DM 1 Specify the problem Sensor by the error/status remaining paper
„ Jam C code: and proceed to
Jam DM: Step [2].
„ Jam D
SENSOR LOW PASS
„ Jam LC, G Jam C, Jam D:
SENSOR UPPER PASS
„ Jam E
EXIT SENSOR (Sensor in Fuser)
„ Jam D, E Jam LC, G:
SENSOR T/R
„ Jam C, E, F
Jam E, Jam D, E:
„ Jam D, F SENSOR OHP
SENSOR REGI
† Possible parts that caused the error
Jam C, E, F, Jam D, F:
SENSOR FUSER IN
„ SENSOR LOW PASS „ SENSOR UPPER PASS
Is there paper remaining on the problem
„ SENSOR T/R „ SENSOR OHP Sensor?
„ SENSOR REGI „ SENSOR FUSER IN
Does the error recur when a test print is Go to Step [3]. End of
„ EXIT SENSOR (Sensor in Fuser) 2 made? procedure
Operation check (1) of problem Sensor Go to Step [4]. Re-attach or
3 Does the ACTUATOR move smoothly replace the
without any damage? actuator, or
Or, is the light emitter of the Sensor clean? clean the light
emitter.
Operation check (2) of problem Sensor Replace PWBA Replace the
4 The voltage of the common line and signal MCU. (p.404) problem Sensor.
line to each Sensor on PWBA MCU is 0 VDC
in a sensor detecting state, or is 5 VDC in a
sensor non-sensing state?

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 EPSON AcuLaser C1100 Revision B

FIP-39 Step Check Yes No

Check after replacement of PWBA MCU Go to Step [7]. End of
† Panel Message 6 Replace PWBA MCU. (p.404) procedure
„ Service Req E517 Does the error recur when the power is turned
ON?
† Possible parts that caused the error
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
„ HARNESS ASSY MAIN „ HARNESS-ASSY FEED 1 7 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
„ HARNESS-ASSY FEED 2 „ PWBA TRAY 500 J502 from LV/HVPS.
„ PWBA MCU „ LV/HVPS Is the continuity normal between all terminals
of J410 ↔ J502?
† Troubleshooting

Step Check Yes No

Check of Feeder attachment on printer Go to Step [2]. End of
1 Remove and re-attach Feeder. procedure
Does the error recur when the power is turned
ON?
Continuity check of HARNESS ASSY MAIN Go to Step [3]. Repair broken
2 Remove Feeder from the printer. or shorted part.
Disconnect P/J421 from PWBA MCU.
Is the continuity normal between all terminals
of J421 ↔ J608 (connector on the printer to
connect Feeder)?
Does the error recur when the power is Go to Step [4]. End of
3 turned ON? procedure
Continuity check of HARNESS-ASSY Go to Step [5]. Replace
4 FEED 1 of Feeder HARNESS-
Remove Feeder. ASSY FEED 1.
Disconnect P/J435 from PWBA TRAY 500. (p.462)
Is the continuity normal between all terminals
of J435 ↔ P608 (connector on Feeder to be
connected to the printer)?
Check after replacement of PWBA TRAY 500 Go to Step [6]. End of
5 Replace PWBA TRAY 500. (p.456) procedure
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-40 Step Check Yes No

Check after replacement of PWBA MCU Go to Step [6]. End of
† Panel Message 5 Replace PWBA MCU. (p.404) procedure
„ Service Req E516 Does the error recur when the power is turned
ON?
† Possible parts that caused the error
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
„ HARNESS ASSY MAIN „ HARNESS-ASSY DUP2 6 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
„ PWBA DUP-L „ PWBA MCU J502 from LV/HVPS.
„ LV/HVPS Is the continuity normal between all terminals
of J410 ↔ J502?
† Troubleshooting

Step Check Yes No

Check of Duplex attachment on printer Go to Step [2]. End of
1 Open and re-attach Duplex. procedure
Also, re-connect connector (P/J607) to printer.
Does the error recur when the power is turned
ON?
Continuity check of HARNESS ASSY MAIN Go to Step [3]. Repair broken
2 Open Duplex, and disconnect the connector to or shorted part.
the printer.
Disconnect the P/J420 from PWBA MCU.
Is the continuity normal between all terminals
of J420 ↔ J607?
Continuity check of HARNESS-ASSY Go to Step [4]. Replace
3 DUP2 of Duplex HARNESS-
Open Duplex, and disconnect the connector to ASSY DUP2.
the printer.
Disconnect P/J443 from PWBA DUP-L.
Is the continuity normal between all terminals
of J443 ↔ P607?
Check after replacement of PWBA DUP-L Go to Step [5]. End of
4 Replace PWBA DUP-L. (p.442) procedure
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-41 FIP-42

† Panel Message † Panel Message

„ Service Req E514 „ Service Req E513
† Possible parts that caused the error † Possible parts that caused the error

„ FFC-ASSY ESS „ PWBA MCU „ PWBA MCU

„ PWBA ESS
† Troubleshooting
† Troubleshooting
Step Check Yes No
Step Check Yes No Does the error recur when the power is Go to Step [4]. Go to Step [2].
Check of connection of FFC-ASSY ESS Go to Step [2]. End of
1 turned off and back on?
1 Re-connect FFC-ASSY ESS of PWBA ESS to procedure Does the error recur even when the Go to Step [4]. Go to Step [3].
PWBA MCU. Does the error recur when a test 2 power is turned off and back on again?
print is made?
Does the error recur even after the power Go to Step[4]. End of
Check of connection of FFC-ASSY ESS Replace FFC- Go to Step [3]. 3
2 Is FFC-ASSY ESS damaged or broken? ASSY ESS.
has been switched several times? procedure*
Disconnect and re-connect all connectors Go to Step [5]. End of
(p.409) 4 connected to PWBA MCU. procedure
Check after replacement of PWBA MCU Replace PWBA End of
3 Replace PWBA MCU. (p.404) ESS. (p.409) procedure
Does the error recur when the power is
turned ON?
Does the error recur when a test print is made?
Check after replacement of PWBA MCU Go to “FIP-79 End of
5 Replace PWBA MCU. (p.404) Electrical procedure
Does the error recur when the power is Noise”. (p.238)
turned ON?

*1: It is assumed to be due to external noise.

Proceed to “FIP-79 Electrical Noise” to check to be sure.

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 EPSON AcuLaser C1100 Revision B

FIP-43 Step Check Yes No

Does the error recur when the power is Go to Step [7]. End of
† Panel Message 6 turned ON? procedure
„ Service Req E511 Operation check of SENSOR TR-0 Replace PWBA Go to Step [8].
† Possible parts that caused the error
7 Remove Photoconductor Unit. MCU. (p.404)
The voltage of P416-2 ↔ P416-3 on PWBA
„ Photoconductor Unit „ SENSOR TR-0 MCU is 5 VDC when silver paper or other
„ HARNESS-ASSY XERO „ MOTOR ASSY P/R reflective object comes close to the sensing
area of SENSOR TR-0, and is 0 VDC when
„ HARNESS ASSY MAIN „ PWBA MCU the object is released?
„ LV/HVPS
Check of 5 VDC power supply to SENSOR Go to Step [9]. Go to Step [14].
† Troubleshooting
8 TR-0
The voltage of P416-1 ↔ P416-3 on PWBA
Step Check Yes No MCU is 5 VDC?
Continuity check of HARNESS-ASSY XERO Replace Replace
1 Check of Photoconductor Unit attachment Go to Step [2]. End of
procedure
9 Disconnect the P/J416 from PWBA MCU. SENSOR TR-0. HARNESS-
Re-attach Photoconductor Unit.
Do all of the wiring below have normal (p.361) ASSY XERO.
Does the error recur when the power is turned
ON? continuity?
J416-1 ↔ J108-3
Operation check of Photoconductor Unit Go to Step [3]. Go to Step [10].
2 Is the Drum of Photoconductor Unit rotating?
J416-2 ↔ J108-2
J416-3 ↔ J108-1
Check for dirt on silver seal on Belt in Replace Go to Step [4].
3 Photoconductor Unit Photoconductor 10 Check after replacement of MOTOR ASSY Go to Step [11]. End of
P/R procedure
Remove Photoconductor Unit. Unit.
Replace MOTOR ASSY P/R. (p.398)
Turn gear of Photoconductor Unit until silver
Does the error recur when the power is turned
seal attached to Belt can be seen.
ON?
Is silver seal dirty?
24 VDC power supply check to MOTOR Go to Step [12]. Go to Step [13].
4 Check of SENSOR TR-0 (TR0 Sensor) Go to Step [5]. Re-attach 11 ASSY P/R
attachment the SENSOR
Disconnect P/J201 from MOTOR ASSY P/R.
Remove Photoconductor Unit. TR-0, and go to
step [5]. The voltage of J201-1 ↔ J201-2 is 24 VDC?
Is SENSOR TR-0 attached securely?
Continuity check of HARNESS ASSY MAIN Replace PWBA Repair broken
5 Check of dirt and foreign bodies on surface Clean to remove Go to Step [7]. 12 Disconnect the P/J403 from PWBA MCU. MCU. (p.404) or shorted part.
of SENSOR TR-0 any dirt or
foreign bodies, Is the continuity normal between all terminals
Remove Photoconductor Unit.
and go to step of J403 ↔ J200?
Are there any dirt or foreign bodies on the
SENSOR TR-0 surface? [6].

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No

Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
13 Disconnect P/J502 from LV/HVPS. HVPS. (p.407) or shorted part.
Do all of the wiring below have normal
continuity?
J502-9 ↔ J201-1
J502-10 ↔ J201-2
5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [15].
14 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
MCU is 5 VDC?
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
15 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
J502 from LV/HVPS.
Do all of the wiring below have normal
continuity?
J410-3 ↔ J502-3
J410-4 ↔ J502-4

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 EPSON AcuLaser C1100 Revision B

FIP-44 Step Check Yes No

5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [7].
† Panel Message 6 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
„ Service Req E510 MCU is 5 VDC?

† Possible parts that caused the error 7 Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
„ ROS ASSY „ HARNESS ASSY MAIN J502 from LV/HVPS.
„ PWBA MCU „ LV/HVPS Do all of the wiring below have normal
continuity?
† Troubleshooting J410-3 ↔ J502-3
J410-4 ↔ J502-4
Step Check Yes No
Check of ROS ASSY attachment Go to Step [2]. End of
1 Re-attach ROS ASSY. (p.375) procedure
Does the error recur when the power is turned
ON?
Continuity check of HARNESS ASSY MAIN Go to Step [3]. Repair broken
2 Remove ROS ASSY. (p.375) or shorted part.
Disconnect the P/J407 from PWBA MCU.
Is the continuity normal between all terminals
of J407 ↔ J601?
5 VDC power supply check to ROS and Go to Step [4]. Go to Step [6].
3 PWB SOS
The voltage of P407-16 ↔ P407-14 on
PWBA MCU is 5 VDC?
Check after replacement of PWBA MCU Go to Step [5]. End of
4 Replace PWBA MCU. (p.404) procedure
Does the error recur when the power is turned
ON?
Check after replacement of ROS ASSY Go to FIP-1 81 End of
5 Replace ROS ASSY. (p.375) Electrical noise. procedure
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-45 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Replace Repair broken
† Panel Message 6 Disconnect P/J413 from PWBA MCU. SENSOR or shorted part.
„ Service Req E527 Do all of the wiring below have normal ROTARY
continuity? HOME POSI.
† Possible parts that caused the error (p.382)
J413-5 ↔ J105-3
„ MOTOR ASSY MAG „ SENSOR ROTARY HOME POSI J413-6 ↔ J105-2
„ HARNESS ASSY MAIN „ PWBA MCU J413-7 ↔ J105-1
„ LV/HVPS 5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [8].
7 The voltage of J410-3 ↔ J410-4 on PWBA MCU. (p.404)
† Troubleshooting MCU is 5 VDC?
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Step Check Yes No 8 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Check of FRAME ASSY-ROTARY and Go to Step [2]. Re-attach, and
1 MOTOR ASSY MAG attachment go to step [2].
J502 from LV/HVPS.
Do all of the wiring below have normal
Are FRAME ASSY-ROTARY and MOTOR continuity?
ASSY MAG attached correctly? J410-3 ↔ J502-3
Rotation check of FRAME ASSY- Go to Step [3]. Remove any J410-4 ↔ J502-4
2 ROTARY and MOTOR ASSY MAG items that
Do FRAME ASSY-ROTARY and MOTOR hinder rotation.
ASSY MAG rotate smoothly?
Turn by hand to check.
Check of SENSOR ROTARY HOME POSI Go to Step [4]. Re-attach, and
3 attachment go to step [4].
Is SENSOR ROTARY HOME POSI attached
correctly?
Operation check of SENSOR ROTARY Replace PWBA Go to Step [5].
4 HOME POSI MCU. (p.404)
The voltage of P413-7 ↔ P413-6 on PWBA
MCU is 0 VDC when FRAME ASSY
ROTARY enters the sensing area, and is 5
VDC when it leaves the sensing area?
5 VDC power supply check to SENSOR Go to Step [6]. Go to Step [7].
5 ROTARY HOME POSI
The voltage of P413-5 ↔ P413-6 on PWBA
MCU is 5 VDC?

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 EPSON AcuLaser C1100 Revision B

FIP-46 Step Check Yes No

Check after replacement of SENSOR ASSY Go to Step [7]. End of
† Panel Message 6 ADC procedure
„ Service Req E526 Replace SENSOR ASSY ADC. (p.353)
Does the error recur when the power is turned
† Possible parts that caused the error ON?
„ SENSOR ASSY ADC „ HARNESS ASSY ADC Power supply check to PWBA MCU Replace PWBA Go to Step [8].
„ PWBA MCU „ LV/HVPS
7 Are each of the power voltages being supplied MCU. (p.404)
to the following terminals on PWBA MCU
† Troubleshooting from LV/HVPS?
P410-1 ↔ P410-2: 3. 3 VDC
Step Check Yes No P410-3 ↔ P410-4: 5 VDC
Check of dirt and foreign bodies on surface Clean to remove Go to Step [2]. P410-5/6 ↔ P410-7/8: 24 VDC
1 of SENSOR ASSY ADC any dirt or Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Are there any dirt or foreign bodies on the foreign bodies, 8 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
SENSOR ASSY ADC surface? and go to step
J502 from LV/HVPS.
[2].
Do all of the wiring below have normal
Check of SENSOR ASSY ADC attachment Go to Step [4]. Re-attach, and
2 Is SENSOR ASSY ADC attached correctly? go to step [3].
continuity?
J410-1 ↔ J502-1
Does the error recur when the power is Go to Step [4]. End of J410-2 ↔ J502-2
3 turned ON? procedure J410-3 ↔ J502-3
J410-4 ↔ J502-4
5 VDC and 24 VDC power supply check to Go to Step [5]. Go to Step [7].
4 SENSOR ASSY ADC J410-5 ↔ J502-5
The voltage of P422-2 ↔ P422-4 on PWBA J410-6 ↔ J502-6
MCU is 24 VDC? J410-7 ↔ J502-7
And the voltage of P422-8 ↔ P422-4 is 5 J410-8 ↔ J502-8
VDC?
Continuity check of HARNESS ASSY ADC Go to Step [6]. Replace
5 Disconnect P/J422 from PWBA MCU. HARNESS
Do all of the wiring below have normal ASSY ADC.
continuity?
J422-8 ↔ J431-1
J422-4 ↔ J431-5
J422-2 ↔ J431-7

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 EPSON AcuLaser C1100 Revision B

FIP-47 Step Check Yes No

Check after replacement of Go to Step [6]. End of
† Panel Message 5 Photoconductor Unit procedure
„ Service Req E525 Replace Photoconductor Unit.
Does the error recur when the power is turned
† Possible parts that caused the error ON?
„ Photoconductor Unit „ SENSOR ASSY ADC 5 VDC and 24 VDC power supply check to Go to Step [7]. Go to Step [14].
„ Toner Cartridge K „ Toner Cartridge Y
6 SENSOR ASSY ADC
„ Toner Cartridge M „ Toner Cartridge C The voltage of P422-2 ↔ P422-4 on PWBA
MCU is 24 VDC?
„ HARNESS ASSY ADC „ SENSOR HUM & TEMP
And the voltage of P422-8 ↔ P422-4 is 5
„ HARNESS ASSY MAIN „ ROS ASSY VDC?
„ PWBA MCU „ LV/HVPS
Continuity check of HARNESS ASSY ADC Go to Step [8]. Replace
† Troubleshooting
7 Disconnect P/J422 from PWBA MCU. HARNESS
Do all of the wiring below have normal ASSY ADC.

Step Check Yes No continuity?

J422-8 ↔ J431-1
Check of connection between Photoconductor Clean, and go to Go to Step [2].
1 Unit and CONDUCTOR attached to frame Step [2].
J422-4 ↔ J431-5
J422-2 ↔ J431-7
Remove Photoconductor Unit.
Check after replacement of SENSOR ASSY Go to Step [9]. End of
Is the contact surface of Photoconductor Unit
and CONDUCTOR attached to the frame
8 ADC procedure
deformed or are there foreign objects on the Replace SENSOR ASSY ADC. (p.353)
surface? Does the error recur when the power is turned
Check of dirt and foreign bodies on surface Clean, and go to Go to Step [4]. ON?
2 of SENSOR ASSY ADC Step [3]. Check of 5 VDC power supply to SENSOR Go to Step [10]. Go to Step [14].
Are there any dirt or foreign bodies on the 9 ASSY HUM & TEMP
SENSOR ASSY ADC surface? The voltage of P413-4 ↔ P413-2 on PWBA
Does the error recur when the power is Go to Step [4]. End of MCU is 5 VDC?
3 turned ON? procedure Continuity check of HARNESS ASSY MAIN Go to Step [11]. Repair broken
Check after replacement of Toner Cartridge Go to Step [5]. End of
10 Disconnect P/J413 from PWBA MCU. or shorted part.
4 Replace Toner Cartridge of each color. procedure Do all of the wiring below have normal
Does the error recur when the power is turned continuity?
ON? J413-1 ↔ J104-4
J413-2 ↔ J104-3
J413-3 ↔ J104-2
J413-4 ↔ J104-1

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No

Check after replacement of SENSOR HUM Go to Step [12]. End of
11 & TEMP procedure
Replace SENSOR HUM & TEMP. (p.400)
Does the error recur when the power is turned
ON?
Check after replacement of ROS ASSY Go to Step [13]. End of
12 Replace ROS ASSY. (p.375) procedure
Does the error recur when the power is turned
ON?
Check after replacement of PWBA MCU Replace LV/ End of
13 Replace PWBA MCU. (p.404) HVPS. (p.407) procedure
Does the error recur when the power is turned
ON?
Power supply check to PWBA MCU Replace PWBA Go to Step [15].
14 Are each of the power voltages being supplied MCU. (p.404)
to the following terminals on PWBA MCU
from LV/HVPS?
P410-1 ↔ P410-2: 3. 3 VDC
P410-3 ↔ P410-4: 5 VDC
P410-5/6 ↔ P410-7/8: 24 VDC
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
15 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
J502 from LV/HVPS.
Do all of the wiring below have normal
continuity?
J410-1 ↔ J502-1
J410-2 ↔ J502-2
J410-3 ↔ J502-3
J410-4 ↔ J502-4
J410-5 ↔ J502-5
J410-6 ↔ J502-6
J410-7 ↔ J502-7
J410-8 ↔ J502-8

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 EPSON AcuLaser C1100 Revision B

FIP-48 Step Check Yes No

Check after replacement of Go to Step [6]. End of
† Panel Message 5 Photoconductor Unit procedure
„ Service Req E524 Replace Photoconductor Unit.
Does the error recur when the power is turned
† Possible parts that caused the error ON?
„ Photoconductor Unit „ SENSOR ASSY ADC 5 VDC and 24 VDC power supply check to Go to Step [7]. Go to Step [14].
„ Toner Cartridge K „ Toner Cartridge Y
6 SENSOR ASSY ADC
„ Toner Cartridge M „ Toner Cartridge C The voltage of P422-2 ↔ P422-4 on PWBA
MCU is 24 VDC?
„ HARNESS ASSY ADC „ SENSOR HUM & TEMP
And the voltage of P422-8 ↔ P422-4 is 5
„ HARNESS ASSY MAIN „ ROS ASSY VDC?
„ PWBA MCU „ LV/HVPS
Continuity check of HARNESS ASSY ADC Go to Step [8]. Replace
† Troubleshooting
7 Disconnect P/J422 from PWBA MCU. HARNESS
Do all of the wiring below have normal ASSY ADC.

Step Check Yes No continuity?

J422-8 ↔ J431-1
Check of connection between Photoconductor Clean, and go to Go to Step [2].
1 Unit and CONDUCTOR attached to frame Step [2].
J422-4 ↔ J431-5
J422-2 ↔ J431-7
Is the contact surface of Photoconductor Unit
and CONDUCTOR attached to the frame Check after replacement of SENSOR ASSY Go to Step [9]. End of
deformed or are there foreign objects on the 8 ADC procedure
surface? Replace SENSOR ASSY ADC. (p.353)
Check of dirt and foreign bodies on surface Clean, and go to Go to Step [4]. Does the error recur when the power is turned
2 of SENSOR ASSY ADC Step [3]. ON?
Are there any dirt or foreign bodies on the 5 VDC power supply check to SENSOR Go to Step [10]. Go to Step [14].
SENSOR ASSY ADC surface? 9 HUM & TEMP
Does the error recur when the power is Go to Step [4]. End of The voltage of P413-4 ↔ P413-2 on PWBA
3 turned ON? procedure MCU is 5 VDC?
Continuity check of HARNESS ASSY MAIN Go to Step [11]. Repair broken
4 Check after replacement of Toner Cartridge
Replace Toner Cartridge of each color.
Go to Step [5]. End of
procedure
10 Disconnect P/J413 from PWBA MCU. or shorted part.
Does the error recur when the power is turned Do all of the wiring below have normal
ON? continuity?
J413-1 ↔ J104-4
J413-2 ↔ J104-3
J413-3 ↔ J104-2
J413-4 ↔ J104-1

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No

Check after replacement of SENSOR HUM Go to Step [12]. End of
11 & TEMP procedure
Replace SENSOR HUM & TEMP. (p.400)
Does the error recur when the power is turned
ON?
Check after replacement of ROS ASSY Go to Step [13]. End of
12 Replace ROS ASSY. (p.375) procedure
Does the error recur when the power is turned
ON?
Check after replacement of PWBA MCU Replace LV/ End of
13 Replace PWBA MCU. (p.404) HVPS. (p.407) procedure
Does the error recur when the power is turned
ON?
Power supply check to PWBA MCU Replace PWBA Go to Step [15].
14 Are each of the power voltages being supplied MCU. (p.404)
to the following terminals on PWBA MCU
from LV/HVPS?
P410-1 ↔ P410-2: 3. 3 VDC
P410-3 ↔ P410-4: 5 VDC
P410-5/6 ↔ P410-7/8: 24 VDC
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
15 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
J502 from LV/HVPS.
Do all of the wiring below have normal
continuity?
J410-1 ↔ J502-1
J410-2 ↔ J502-2
J410-3 ↔ J502-3
J410-4 ↔ J502-4
J410-5 ↔ J502-5
J410-6 ↔ J502-6
J410-7 ↔ J502-7
J410-8 ↔ J502-8

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 EPSON AcuLaser C1100 Revision B

FIP-49

† Panel Message
„ Service Req E523
† Possible parts that caused the error

„ Toner Cartridge K „ Toner Cartridge Y

„ Toner Cartridge M „ Toner Cartridge C
„ PWBA MCU

† Troubleshooting

Step Check Yes No

Check after replacement of Toner Go to Step [2]. End of
1 Cartridge K/Y/M/C procedure
Replace Toner Cartridge K/Y/M/C.
Does the error recur when the power is turned
ON?
Check after replacement of PWBA MCU Go to FIP-1 81 End of
2 Replace PWBA MCU. (p.404) Electrical Noise procedure
Does the error recur when the power is turned (p.238)
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-50 Step Check Yes No

Check after replacement of PWBA MCU Go to Step [7]. End of
† Panel Message 6 Replace PWBA MCU. (p.404) procedure
„ Irregular Density Does the error recur when the power is turned
ON?
† Possible parts that caused the error
Check after replacement of Toner Cartridge Go to Step [8]. End of
„ SENSOR ASSY ADC „ Photoconductor Unit 7 Replace Toner Cartridge K/Y/M/C. procedure
„ PWBA MCU „ Toner Cartridge K Does the error recur when the power is turned
„ Toner Cartridge Y „ Toner Cartridge M ON?
„ Toner Cartridge C „ ROS ASSY Check after replacement of ROS ASSY Go to Step [9]. End of
„ LV/HVPS
8 Replace ROS ASSY. (p.375) procedure
Does the error recur when the power is turned
† Troubleshooting ON?
Check after replacement of LV/HVPS Go to “FIP-79 End of
Step Check Yes No 9 Replace LV/HVPS. (p.407) Electrical procedure
Check of dirt and foreign bodies on surface Clean to remove Go to Step [2]. Noise”. (p.238)
1 of SENSOR ASSY ADC any dirt or
Does the error recur when the power is turned
ON?
Are there any dirt or foreign bodies on the foreign bodies,
SENSOR ASSY ADC surface? and go to step
[2].
Check of SENSOR ASSY ADC attachment Go to Step [4]. Re-attach, and
2 Is SENSOR ASSY ADC attached correctly? go to step [3].

Does the error recur when the power is Go to Step [4]. End of
3 turned ON? procedure
Check after replacement of SENSOR ASSY Go to Step [5]. End of
4 ADC procedure
Replace SENSOR ASSY ADC. (p.353)
Does the error recur when the power is turned
ON?
Check after replacement of Go to Step [6]. End of
5 Photoconductor Unit procedure
Replace Photoconductor Unit.
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-51 Step Check Yes No

5 VDC power supply check to SENSOR Go to Step [7]. Go to Step [10].
† Panel Message 6 2BTR RETRACT.
„ Service Req E521 The voltage of P418-4 ↔ P418-5 on PWBA
MCU is 5 VDC?
† Possible parts that caused the error
Continuity check of HARNESS ASSY ADC Go to Step [8]. Replace
„ HARNESS ASSY MAIN „ MOT ASSY MICRO
7 Disconnect the P/J418 from PWBA MCU. HARNESS
ASSY ADC.
„ SENSOR 2BTR RETRACT „ HARNESS ASSY ADC Do all of the wiring below have normal
„ PWBA MCU „ LV/HVPS continuity?
J418-4 ↔ J112-3
† Troubleshooting J418-5 ↔ J112-2
J418-6 ↔ J112-1
Step Check Yes No
Check after replacement of SENSOR 2BTR Go to Step [9]. End of
Check of 2ND BTR ASSY attachment Go to Step [2]. Re-attach, and 8 RETRACT procedure
1 Is 2ND BTR ASSY attached correctly? go to step [2]. Replace SENSOR 2BTR RETRACT.
Does the error recur when restarting the Go to Step [3]. End of Does the error recur when restarting the
2 printer? procedure printer?
Check after replacement of PWBA MCU Go to Step [11]. End of
3 Continuity check of HARNESS ASSY MAIN Go to Step [4]. Repair broken
or shorted part.
9 Replace PWBA MCU. (p.404) procedure
Disconnect the P/J403 from PWBA MCU.
Do all of the wiring below have normal Does the error recur when restarting the
continuity? printer?
J403-1 ↔ J600-3
J403-2 ↔ J600-2
J403-3 ↔ J600-1
24 VDC power supply check to MOT ASSY Go to Step [5]. Go to Step [10].
4 MICRO (2nd BTR Retract Motor)
The voltage of P403-3 ↔ P403-2 on PWBA
MCU is 24 VDC?
Check after replacement of MOT ASSY Go to Step [6]. End of
5 MICRO procedure
Replace MOT ASSY MICRO. (p.399)
Does the error recur when restarting the
printer?

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No

Power supply check to PWBA MCU Replace PWBA Go to Step [11].
10 Are each of the power voltages being supplied MCU. (p.404)
to the following terminals on PWBA MCU
from LV/HVPS?
P410-1 ↔ P410-2: 3. 3VDC
P410-3 ↔ P410-4: 5VDC
P410-5/6 ↔P410-7/8: 24VDC
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
11 Are each of the power voltages being supplied HVPS. (p.407) or shorted part.
to the following terminals on PWBA MCU
from LV/HVPS?
J410-1 ↔ J502-1
J410-2 ↔ J502-2
J410-3 ↔ J502-3
J410-4 ↔ J502-4
J410-5 ↔ J502-5
J410-6 ↔ J502-6
J410-7 ↔ J502-7
J410-8 ↔ J502-8

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 EPSON AcuLaser C1100 Revision B

FIP-52 Step Check Yes No

5 VDC power supply check to SENSOR Go to Step [8]. Go to Step [11].
† Panel Message 7 2BTR RETRACT
„ Service Req E520 The voltage of P418-4 ↔ P418-5 on PWBA
MCU is 5 VDC?
† Possible parts that caused the error
Continuity check of HARNESS ASSY ADC Go to Step [9]. Replace
„ HARNESS ASSY MAIN „ MOT ASSY MICRO
8 Disconnect the P/J418 from PWBA MCU. HARNESS
ASSY ADC.
„ SENSOR 2BTR RETRACT „ HARNESS ASSY ADC Do all of the wiring below have normal
„ PWBA MCU „ LV/HVPS continuity?
J418-4 ↔ J112-3
† Troubleshooting J418-5 ↔ J112-2
J418-6 ↔ J112-1
Step Check Yes No
Check after replacement of SENSOR 2BTR Go to Step [10]. End of
Check of DRIVE ASSY BTR attachment Go to Step [2]. Re-attach, and 9 RETRACT procedure
1 Is the DRIVE ASSY BTR attached correctly? go to step [2]. Replace SENSOR 2BTR RETRACT. (p.356)
Check of 2ND BTR ASSY attachment Go to Step [4]. Re-attach, and Does the error recur when a test print is made?
2 Is 2ND BTR ASSY attached correctly? go to step [3]. Check after replacement of PWBA MCU Go to Step [12]. End of
10 Replace PWBA MCU. (p.404) procedure
Does the error recur when a test print is Go to Step [4]. End of
3 made? procedure Does the error recur when a test print is made?

Continuity check of HARNESS ASSY MAIN Go to Step [5]. Repair broken

4 Disconnect the P/J403 from PWBA MCU. or shorted part.
Do all of the wiring below have normal
continuity?
J403-1 ↔ J600-3
J403-2 ↔ J600-2
J403-3 ↔ J600-1
24 VDC power supply check to MOT ASSY Go to Step [6]. Go to Step [11].
5 MICRO (2nd BTR Retract Motor)
The voltage of P403-3 ↔ P403-2 on PWBA
MCU is 24 VDC?
Check after replacement of MOT ASSY Go to Step [7]. End of
6 MICRO procedure
Replace MOT ASSY MICRO. (p.399)
Does the error recur when a test print is made?

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No

Power supply check to PWBA MCU Replace PWBA Go to Step [12].
11 Are each of the power voltages being supplied MCU. (p.404)
to the following terminals on PWBA MCU
from LV/HVPS?
P410-1 ↔ P410-2: 3. 3 VDC
P410-3 ↔ P410-4: 5 VDC
P410-5/6 ↔ P410-7/8: 24 VDC
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
12 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
J502 from LV/HVPS.
Do all of the wiring below have normal
continuity?
J410-1 ↔ J502-1
J410-2 ↔ J502-2
J410-3 ↔ J502-3
J410-4 ↔ J502-4
J410-5 ↔ J502-5
J410-6 ↔ J502-6
J410-7 ↔ J502-7
J410-8 ↔ J502-8

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 EPSON AcuLaser C1100 Revision B

FIP-53 Step Check Yes No

Continuity check of FFC-ASSY LV/MCU Go to Step [6]. Replace FFC-
† Panel Message 5 Disconnect P/J401 from PWBA MCU and P/ ASSY LV/MCU.
„ Service Req E537 J500 from LV/HVPS.
Do all of the wiring below have normal
† Possible parts that caused the error continuity?
„ FUSER ASSY „ HARNESS ASSY MCU C/L P401-21 ↔ J500-2
P401-22 ↔ J500-1
„ FFC-ASSY LV/MCU „ HARNESS ASSY AC
„ PWBA FUSER CONT „ LV/HVPS
6 Continuity check of HARNESS ASSY AC Go to Step [7]. Replace
HARNESS
„ HARNESS ASSY MAIN „ PWBA MCU Disconnect P/J503 from LV/HVPS and P/J2
from PWBA FUSER CONT. ASSY AC.
† Troubleshooting Do all of the wiring below have normal
continuity?
Step Check Yes No J503-5 ↔ J2-5
J503-6 ↔ J2-6
Check of FUSER ASSY attachment Go to Step [3]. Re-attach, and
1 go to step [2]. Check after replacement of PWBA FUSER Go to Step [8]. End of
Is the FUSER ASSY attached correctly to the
printer?
7 CONT procedure
In particular, is the connector connected Replace PWBA FUSER CONT. (p.410)
firmly to the printer? Does the error occur when the power is turned
Is the connector latched normally? ON?
Check after replacement of LV/HVPS Go to Step [9]. End of
2 Does the error recur when the power is
turned ON?
Go to Step [3]. End of
procedure
8 Replace LV/HVPS. (p.407) procedure

Check after replacement of the FUSER ASSY Go to Step [4]. End of Does the error occur when the power is turned
3 Replace FUSER ASSY. (p.388) procedure ON?
Continuity check of HARNESS ASSY MAIN Replace PWBA Replace
Does the error recur when the power is turned
ON?
9 Disconnect P/J1 from PWBA FUSER CONT MCU. (p.404) HARNESS
and P/J410 from PWBA MCU. ASSY MAIN.
Continuity check of HARNESS ASSY Go to Step [5]. Replace
4 MCU C/L HARNESS Do all of the wiring below have normal
W A R N IN G ASSY MCU continuity?
Allow FUSER ASSY to cool down
before performing work. C/L. P/J1-1 ↔ P/J410-10
P/J1-3 ↔ P/J410-9
Remove FUSER ASSY. (p.388)
Is the continuity normal between all terminals
of J614A ↔ J417 and J614 ↔ J3?

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 EPSON AcuLaser C1100 Revision B

FIP-54 FIP-55

† Panel Message † Panel Message

„ Service Req E533 „ Service Req E530
† Possible parts that caused the error † Possible parts that caused the error

„ SENSOR HUM & TEMP „ HARNESS ASSY MAIN „ HARNESS ASSY MAIN „ SENSOR HUM & TEMP
„ PWBA MCU „ PWBA MCU

† Troubleshooting † Troubleshooting

Step Check Yes No Step Check Yes No

Temperature check of printer installation site Ask the Go to Step [2]. Continuity check of HARNESS ASSY MAIN Go to Step [2]. Repair broken
1 Has the ambient temperature where the printer customer to 1 Disconnect P/J413 from PWBA MCU. or shorted part.
is installed fallen to -7°C or below or reached improve the Is the continuity normal between all terminals
or risen to 55°C or more. installation of J413 ↔ J104?
environment for
Check after replacement of SENSOR HUM Replace PWBA End of
the printer.
2 & TEMP MCU. (p.404) procedure
Check of SENSOR HUM & TEMP Go to Step [3]. Replace
2 thermistor resistance value SENSOR HUM
Replace SENSOR HUM & TEMP. (p.400)
& TEMP. Does the error recur when the power is turned
Disconnect P/J413 from PWBA MCU.
ON?
The resistance value of P104-4 ↔ P104-3 is (p.400)
10k Ω ± 1k Ω (approx. 20°C)?
Continuity check of HARNESS ASSY MAIN Replace PWBA Repair broken
3 Disconnect the P/J413 from PWBA MCU. MCU. (p.404) or shorted part.
Is the continuity normal between all terminals
of J413 ↔ J104?

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 EPSON AcuLaser C1100 Revision B

FIP-56 Step Check Yes No

24 VDC power supply check to PWBA Replace PWBA Go to Step [6].
† Panel Message 5 TRAY 500 TRAY 500.
„ Service Req E547 The voltage of P435-9/10 ↔ P435-7/8 on (p.456)
PWBA TRAY 500 is 24 VDC?
† Possible parts that caused the error
Continuity check of HARNESS-ASSY FEED 1 Go to Step [7]. Replace PWBA
„ HARNESS-ASSY FEED MAIN „ DRIVE ASSY FEED
6 Disconnect P/J435 from PWBA TRAY TRAY 500.
„ PWBA TRAY 500 „ HARNESS-ASSY FEED 1 CONT. (p.456)
„ HARNESS ASSY MAIN „ PWBA MCU Do all of the wiring below have normal
continuity?
„ LV/HVPS
J435-10 ↔ P608-1 (connector on Feeder to
be connected to the printer)
† Troubleshooting
J435-9 ↔ P608-2
Step Check Yes No J435-8 ↔ P608-3
J435-7 ↔ P608-4
Check of DRIVE ASSY FEED attachment Go to Step [2]. Re-attach, and
1 Continuity check of HARNESS ASSY MAIN Go to Step [8]. Repair broken
Is DRIVE ASSY FEED attached correctly? go to step [2].
7 Disconnect P/J421 from PWBA MCU. or shorted part.
Continuity check of HARNESS-ASSY Go to Step [3]. Replace
2 FEED MAIN HARNESS-
Do all of the wiring below have normal
continuity?
Disconnect P/J437 from PWBA TRAY ASSY FEED
MAIN. J421-1 ↔ J608-10 (connector on the printer
CONT.
to connect Feeder)
Do all of the wiring below have normal
J421-2 ↔ J608-9
continuity?
J421-3 ↔ J608-8
J437-1 ↔ J440-5
J421-4 ↔ J608-7
J437-2 ↔ J440-4
J437-4 ↔ J440-2 24 VDC power supply check to PWBA MCU Replace PWBA Go to Step [9].
J437-5 ↔ J440-1
8 The voltage of P410-5/6 ↔ P410-7/8 on MCU. (p.404)
PWBA MCU is 24 VDC?
24 VDC power supply check to DRIVE Go to Step [4]. Go to Step [5].
3 Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
ASSY FEED
The voltage of P440-2 ↔ P440-1 on PWBA
9 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
FEED DRV is 24 VDC? J502 from LV/HVPS.
Do all of the wiring below have normal
Check of FEED MOTOR START signal Replace DRIVE Go to Step [10].
4 The voltage of P440-5 ↔ P440-1 on PWBA ASSY FEED.
continuity?
(p.458) J410-5 ↔ J502-5
FEED DRV is xx VDC when FEED MOTOR
START signal is ON? J410-6 ↔ J502-6
J410-7 ↔ J502-7
J410-8 ↔ J502-8

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No

5 VDC power supply check to PWBA Replace PWBA Go to Step [11].
10 TRAY 500 TRAY 500.
The voltage of P435-6 ↔ P435-5 on PWBA (p.456)
TRAY CONT is 5 VDC?
Continuity check of HARNESS-ASSY FEED 1 Go to Step [12]. Replace
11 Disconnect P/J435 from PWBA TRAY HARNESS-
CONT. ASSY FEED 1.
Do all of the wiring below have normal (p.462)
continuity?
J435-6 ↔ P608-5 (connector on Feeder to
be connected to the printer)
J435-5 ↔ P608-6
Continuity check of HARNESS ASSY MAIN Go to Step [13]. Repair broken
12 Disconnect P/J421 from PWBA MCU. or shorted part.
Do all of the wiring below have normal
continuity?
J421-5 ↔ J608-6 (connector on the printer
to connect Feeder)
J421-6 ↔ J608-5
5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [14].
13 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
MCU is 5 VDC?
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
14 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
J502 from LV/HVPS.
Do all of the wiring below have normal
continuity?
J410-3 ↔ J502-3
J410-4 ↔ J502-4

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 EPSON AcuLaser C1100 Revision B

FIP-57 Step Check Yes No

24 VDC power supply check to MOTOR Go to Step [6]. Go to Step [13].
† Panel Message 5 ASSY DUP (DUP Lower Motor)
„ Service Req E546 The voltage of both P442-1 ↔ Frame Chassis
and P442-2 ↔ Frame Chassis on PWBA
† Possible parts that caused the error DUP-L are 24 VDC?

„ MOTOR ASSY DUP „ MOTOR ASSY DUP INV

6 24 VDC power supply check to MOTOR Go to Step [7]. Go to Step [12].
ASSY DUP INV (DUP Upper Motor)
„ HARNESS ASSY MAIN „ HARNESS-ASSY DUP2
The voltage of both J612-6 ↔ Frame Chassis
„ PWBA MCU „ LV/HVPS
and P612-5 ↔ Frame Chassis on PWBA
„ HARNESS-ASSY DUP1 „ PWBA DUP-L DUP-L are 24 VDC?

† Troubleshooting 7 Check after replacement of PWBA DUP-L Go to Step [8]. End of

Replace PWBA DUP-L. (p.442) procedure
Step Check Yes No Does the error recur when the power is turned
ON?
Check of MOTOR ASSY DUP (DUP Lower Go to Step [2]. Re-attach, and
1 Check after replacement of MOTOR ASSY Go to Step [9]. End of
Motor) and MOTOR ASSY DUP (DUP
Upper Motor) attachment
go to step [2].
8 DUP (DUP Lower Motor) procedure
Are the Lower and Upper MOTOR ASSY Replace MOTOR ASSY DUP. (p.443)
DUP attached correctly? Does the error recur when the power is turned
ON?
Check of load of transmission section of Go to Step [3]. Replace parts
2 MOTOR driving force that hinder Check after replacement of MOTOR ASSY Go to Step [10]. End of
Do the Gears that transmit rotation of rotation. 9 DUP INV (DUP Upper Motor) procedure
MOTOR rotate smoothly? Replace MOTOR ASSY DUP. (p.424)
Continuity check of HARNESS ASSY MAIN Go to Step [4]. Repair broken Does the error recur when the power is turned
3 Disconnect the P/J420 from PWBA MCU. or shorted part. ON?
Power supply check to PWBA MCU Replace PWBA Go to Step [11].
Is the continuity normal between all terminals
of J420 ↔ J607 (connector on the printer to
10 Is the specified DC voltage being supplied to MCU. (p.407)
connect Duplex)? the following terminals on PWBA MCU?
Continuity check of HARNESS-ASSY DUP2 Go to Step [5]. Replace P410-1 ↔ P410-2: 3. 3 VDC
4 Disconnect P/J443 from PWBA DUP-L. HARNESS- P410-3 ↔ P410-4: 5 VDC
Is the continuity normal between all terminals ASSY DUP2. P410-5/6 ↔ P410-7/8: 24 VDC
of J443 ↔ P607 (connector on Duplex to be
connected to the printer)?

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No Step Check Yes No

Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken Continuity check of HARNESS ASSY MAIN Go to Step [16]. Repair broken
11 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part. 15 Disconnect the P/J420 from PWBA MCU. or shorted part.
J502 from LV/HVPS. Do all of the wiring below have normal
Do all of the wiring below have normal continuity?
continuity? J420-1 ↔ J607-12
J410-1 ↔ J502-1 J420-2 ↔ J607-11
J410-2 ↔ J502-2 J420-3 ↔ J607-10
J410-3 ↔ J502-3 J420-4 ↔ J607-9
J410-4 ↔ J502-4
24 VDC power supply check to PWBA MCU Replace PWBA Go to Step [17].
J410-5 ↔ J502-5 16 The voltage of P410-5/6 ↔ P410-7/8 on MCU. (p.404)
J410-6 ↔ J502-6 PWBA MCU is 24 VDC?
J410-7 ↔ J502-7
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
J410-8 ↔ J502-8 17 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Continuity check of HARNESS-ASSY DUP1 Go to Step [13]. Replace
12 Disconnect P/J444 from PWBA DUP-L. HARNESS-
J502 from LV/HVPS.
Do all of the wiring below have normal
Do all of the wiring below have normal ASSY DUP1. continuity?
continuity? J410-5 ↔ J502-5
J444-11 ↔ J612-4 J410-6 ↔ J502-6
J444-12 ↔ J612-3 J410-7 ↔ J502-7
J444-13 ↔ J612-2 J410-8 ↔ J502-8
J444-14 ↔ J612-1
24 VDC power supply check to PWBA DUP-L Replace PWBA Go to Step [14].
13 The voltage of P443-9/10 ↔ P443-11/12 on DUP-L. (p.442)
PWBA DUP-L is 24 VDC?
Continuity check of HARNESS ASSY DUP2 Go to Step [15]. Replace
14 Disconnect P/J443 from PWBA DUP-L. HARNESS
Do all of the wiring below have normal ASSY DUP2.
continuity?
J443-9 ↔ P607-4
J443-10 ↔ P607-3
J443-11 ↔ P607-2
J443-12 ↔ P607-1

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 EPSON AcuLaser C1100 Revision B

FIP-58 Step Check Yes No

Check after replacement of SENSOR IBT Go to Step [7]. End of
† Panel Message 6 RETRACT procedure
„ Service Req E542 Replace SENSOR IBT RETRACT. (p.357)
Does the error recur when a test print is made?
† Possible parts that caused the error
Check after replacement of PWBA MCU Go to Step [9]. End of
„ DRIVE ASSY PRO „ SENSOR IBT RETRACT 7 Replace PWBA MCU. (p.404) procedure
„ HARNESS ASSY MAIN „ PWBA MCU Does the error recur when a test print is made?
„ LV/HVPS Power supply check to PWBA MCU Replace PWBA Go to Step [9].
8 Are each of the power voltages being supplied MCU. (p.404)
† Troubleshooting
to the following terminals on PWBA MCU
from LV/HVPS?
Step Check Yes No
P410-1 ↔ P410-2: 3. 3 VDC
Check of connection of DRIVE ASSY PRO Go to Step [2]. Re-connect the P410-3 ↔ P410-4: 5 VDC
1 (IBT Cleaner Retract Motor) connector. P410-5/6 ↔ P410-7/8: 24 VDC
Is connector P/J414 connected firmly to
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
PWBA MCU? 9 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
24 VDC power supply check to DRIVE Go to Step [3]. Go to Step [8].
2 ASSY PRO (IBT Cleaner Retract Motor)
J502 from LV/HVPS.
Do all of the wiring below have normal
The voltage of P414-3 ↔ P414-2 on PWBA continuity?
MCU 2 is 4 VDC?
J410-1 ↔ J502-1
Check after replacement of DRIVE ASSY Go to Step [4]. End of J410-2 ↔ J502-2
3 PRO procedure J410-3 ↔ J502-3
Replace DRIVE ASSY PRO. (p.394) J410-4 ↔ J502-4
Does the error recur when a test print is made? J410-5 ↔ J502-5
5 VDC power supply check to SENSOR Go to Step [5]. Go to Step [8]. J410-6 ↔ J502-6
4 IBT RETRACT J410-7 ↔ J502-7
The voltage of P415-3 ↔ P415-4 on PWBA J410-8 ↔ J502-8
MCU is 5 VDC?
Continuity check of HARNESS ASSY MAIN Go to Step [6]. Replace
5 Disconnect P/J415 from PWBA MCU. HARNESS
Do all of the wiring below have normal ASSY MAIN.
continuity?
J415-3 ↔ J107-3
J415-4 ↔ J107-2
J415-5 ↔ J107-1

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 EPSON AcuLaser C1100 Revision B

FIP-59 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [7]. Repair broken
† Panel Message 6 Disconnect P/J415 from PWBA MCU. or shorted part.
„ Replace Toner Y Do all of the wiring below have normal
continuity?
† Possible parts that caused the error
J415-1 ↔ J106-2
„ Toner Cartridge Y „ ANTENNA ASSY-CTRG or ANTENNA CTRG J415-2 ↔ J106-1
„ HARNESS ASSY MAIN „ PWBA MCU Check after replacement of ANTENNA Replace PWBA End of
7 ASSY-CTRG or ANTENNA CTRG MCU. (p.404) procedure
† Troubleshooting Replace ANTENNA ASSY-CTRG or
ANTENNA CTRG. (p.379) or (p.380)
Step Check Yes No Does the error recur when the power is turned
Check of Toner Cartridge Y attachment Go to Step [4]. Re-attach, and ON?
1 Is Toner Cartridge Y attached correctly? go to step [2].

Does the error recur when the power is Go to Step [3]. End of
2 turned ON? procedure
Check after replacement of Toner Cartridge Y Go to Step [4]. End of
3 Replace Toner Cartridge Y. procedure
Does the error recur when the power is turned
ON?
Check of ANTENNA CTRG Clean Go to Step [5].
4 Is ANTENNA CTRG dirty and damaged? ANTENNA
CTRG, and then
proceed to step
[5].
Operation check of ANTENNA CTRG Go to Step [6]. End of
5 Disconnect the P/J415 from PWBA MCU and procedure
reconnect it.
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-60 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [7]. Repair broken
† Panel Message 6 Disconnect P/J415 from PWBA MCU. or shorted part.
„ Replace Toner M Do all of the wiring below have normal
continuity?
† Possible parts that caused the error
J415-1 ↔ J106-2
„ Toner Cartridge M „ ANTENNA ASSY-CTRG or ANTENNA CTRG J415-2 ↔ J106-1
„ HARNESS ASSY MAIN „ PWBA MCU Check after replacement of ANTENNA Replace PWBA End of
7 ASSY-CTRG or ANTENNA CTRG MCU. (p.404) procedure
† Troubleshooting Replace ANTENNA ASSY-CTRG or
ANTENNA CTRG. (p.379) or (p.380)
Step Check Yes No Does the error recur when the power is turned
Check of Toner Cartridge M attachment Go to Step [4]. Re-attach, and ON?
1 Is Toner Cartridge M attached correctly? go to step [2].

Does the error recur when the power is Go to Step [3]. End of
2 turned ON? procedure
Check after replacement of Toner Cartridge M Go to Step [4]. End of
3 Replace Toner Cartridge M. procedure
Does the error recur when the power is turned
ON?
Check of ANTENNA CTRG Clean Go to Step [5].
4 Is ANTENNA CTRG dirty and damaged? ANTENNA
CTRG, and then
proceed to step
[5].
Operation check of ANTENNA CTRG Go to Step [6]. End of
5 Disconnect the P/J415 from PWBA MCU and procedure
reconnect it.
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-61 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [7]. Repair broken
† Panel Message 6 Disconnect P/J415 from PWBA MCU. or shorted part.
„ Replace Toner C Do all of the wiring below have normal
continuity?
† Possible parts that caused the error
J415-1 ↔ J106-2
„ Toner Cartridge C „ ANTENNA ASSY-CTRG or ANTENNA CTRG J415-2 ↔ J106-1
„ HARNESS ASSY MAIN „ PWBA MCU Check after replacement of ANTENNA Replace PWBA End of
7 ASSY-CTRG or ANTENNA CTRG MCU. (p.404) procedure
† Troubleshooting Replace ANTENNA ASSY-CTRG or
ANTENNA CTRG. (p.379) or (p.380)
Step Check Yes No Does the error recur when the power is turned
Check of Toner Cartridge C attachment Go to Step [4]. Re-attach, and ON?
1 Is Toner Cartridge C attached correctly? go to step [2].

Does the error recur when the power is Go to Step [3]. End of
2 turned ON? procedure
Check after replacement of Toner Cartridge C Go to Step [4]. End of
3 Replace Toner Cartridge C. procedure
Does the error recur when the power is turned
ON?
Check of ANTENNA CTRG Clean Go to Step [5].
4 Is ANTENNA CTRG dirty and damaged? ANTENNA
CTRG, and then
proceed to step
[5].
Operation check of ANTENNA CTRG Go to Step [6]. End of
5 Disconnect the P/J415 from PWBA MCU and procedure
reconnect it.
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-62 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [7]. Repair broken
† Panel Message 6 Disconnect P/J415 from PWBA MCU. or shorted part.
„ Replace Toner K Do all of the wiring below have normal
continuity?
† Possible parts that caused the error
J415-1 ↔ J106-2
„ Toner Cartridge K „ ANTENNA ASSY-CTRG or ANTENNA CTRG J415-2 ↔ J106-1
„ HARNESS ASSY MAIN „ PWBA MCU Check after replacement of ANTENNA Replace PWBA End of
7 ASSY-CTRG or ANTENNA CTRG MCU. (p.404) procedure
† Troubleshooting Replace ANTENNA ASSY-CTRG or
ANTENNA CTRG. (p.379) or (p.380)
Step Check Yes No Does the error recur when the power is turned
Check of Toner Cartridge K attachment Go to Step [4]. Re-attach, and ON?
1 Is Toner Cartridge K attached correctly? go to step [2].

Does the error recur when the power is Go to Step [3]. End of
2 turned ON? procedure
Check after replacement of Toner Cartridge K Go to Step [4]. End of
3 Replace Toner Cartridge K. procedure
Does the error recur when the power is turned
ON?
Check of ANTENNA CTRG Clean Go to Step [5].
4 Is ANTENNA CTRG dirty and damaged? ANTENNA
CTRG, and then
proceed to step
[5].
Operation check of ANTENNA CTRG Go to Step [6]. End of
5 Disconnect the P/J415 from PWBA MCU and procedure
reconnect it.
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-63 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [7]. Repair broken
† Panel Message 6 Do all of the wiring below have normal or shorted part.
„ Replace Photocondctr continuity?
J413-10 ↔ J617-3
† Possible parts that caused the error
J413-11 ↔ J617-2
„ Photoconductor Unit „ SENSOR TNER FULL J413-12 ↔ J617-1
„ HARNESS ASSY MAIN „ PWBA MCU Continuity check of HARNESS ASSY TNR Replace Repair broken
„ LV/HVPS
7 FULL SENSOR or shorted part.
Disconnect P/J617. TNER FULL.
† Troubleshooting Do all of the wiring below have normal (p.374)
continuity?
Step Check Yes No P617-1 ↔ J126-3
Attachment check of Photoconductor Unit Go to Step [4]. Re-attach, and P617-2 ↔ J126-2
1 Is Photoconductor Unit attached correctly? go to step [2]. P617-3 ↔ J126-1
5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [9].
2 Does the error recur when the power is
turned ON?
Go to Step [3]. End of
procedure
8 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
MCU is 5 VDC?
Check after replacement of Go to Step [4]. End of
3 Photoconductor Unit procedure Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Replace Photoconductor Unit.
9 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Does the error occur when the power is turned J502 from LV/HVPS.
ON? Do all of the wiring below have normal
continuity?
Operation check of SENSOR TNER FULL Replace PWBA Go to Step [5].
4 (Toner Full Sensor) MCU. (p.404) J410-3 ↔ J502-3
Remove Photoconductor Unit. J410-4 ↔ J502-4
The voltage of P413-11 ↔ P413-10 on
PWBA MCU is 0 VDC when the sensor
sensing area is blocked, and is 5 VDC when
the sensing area is not blocked?
5 VDC power supply check to SENSOR Go to Step [6]. Go to Step [8].
5 TNER FULL
The voltage of P413-12 ↔ P413-10 on
PWBA MCU is 5 VDC?

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 EPSON AcuLaser C1100 Revision B

FIP-64 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [6]. Repair broken
† Panel Message 5 Do all of the wiring below have normal or shorted part.
„ A Open continuity?
J415-10 ↔ J125-2
† Possible parts that caused the error
J415-11 ↔ J125-1
„ COVER FRONT ASSY U „ SWITCH-FRONT DOOR Power supply check to PWBA MCU Replace PWBA Go to Step [7].
„ PWBA MCU „ LV/HVPS 6 Is the specified DC voltage being supplied to MCU. (p.404)
the following terminals on PWBA MCU?
† Troubleshooting P410-1 ↔ P410-2: 3. 3 VDC
P410-3 ↔ P410-4: 5 VDC
Step Check Yes No P410-5/6 ↔ P410-7/8: 24 VDC
Check of open/close state of COVER Go to Step [3]. Close the cover.
1 Is COVER FRONT ASSY U closed? Go to Step [2]. 7 Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Does the error recur when the power is Go to Step [3]. End of J502 from LV/HVPS.
2 turned ON? procedure Do all of the wiring below have normal
continuity?
Shape check of COVER FRONT ASSY U Replace Go to Step [4].
3 Is the actuator of COVER FRONT ASSY U COVER J410-1 ↔ J502-1
that presses SWITCH-FRONT DOOR FRONT J410-2 ↔ J502-2
deformed or damaged? ASSY U. J410-3 ↔ J502-3
(p.292) J410-4 ↔ J502-4
Actuator J410-5 ↔ J502-5
J410-6 ↔ J502-6
J410-7 ↔ J502-7
J410-8 ↔ J502-8

Operation check of SWITCH-FRONT DOOR Go to Step [5]. Replace

4 Disconnect SWITCH-FRONT DOOR P/J125. SWITCH-
Is there continuity on P125-1 ↔ P125-2 when FRONT DOOR.
SWITCH-FRONT DOOR is pressed, and (p.300)
does the continuity stop when SWITCH-
FRONT DOOR is released?

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 EPSON AcuLaser C1100 Revision B

FIP-65 Step Check Yes No

Continuity check of HARNESS-ASSY P/H2 Replace Replace
† Panel Message 4 Disconnect P/J603. SWITCH-PH HARNESS-
„ E Open Do all of the wiring below have normal DOOR. (p.339) ASSY P/H2.
continuity?
† Possible parts that caused the error
P603-5 ↔ J100-2
„ CHUTE ASSY-REAR „ SWITCH-PH DOOR P603-6 ↔ J100-1
„ HARNESS-ASSY P/H1 „ HARNESS-ASSY P/H2 Power supply check to PWBA MCU Replace PWBA Go to Step [6].
„ PWBA MCU „ HARNESS ASSY MAIN
5 Is the specified DC voltage being supplied to MCU. (p.404)
„ LV/HVPS the following terminals on PWBA MCU?
P410-1 ↔ P410-2: 3. 3 VDC
† Troubleshooting P410-3 ↔ P410-4: 5 VDC
P410-5/6 ↔ P410-7/8: 24 VDC
Step Check Yes No
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Shape check of CHUTE ASSY-REAR Replace Go to Step [2]. 6
1 Is the actuator of CHUTE ASSY-REAR that CHUTE ASSY-
Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407)
J502 from LV/HVPS.
or shorted part.

presses SWITCH I/L CAB (P/H Cover REAR. (p.325)

Do all of the wiring below have normal
Switch) damaged? continuity?
J410-1 ↔ J502-1
Actuator
J410-2 ↔ J502-2
J410-3 ↔ J502-3
J410-4 ↔ J502-4
J410-5 ↔ J502-5
J410-6 ↔ J502-6
J410-7 ↔ J502-7
Operation check of SWITCH-PH DOOR Go to Step [5]. Go to Step [3]. J410-8 ↔ J502-8
2 Disconnect the P/J408 from the PWBA MCU.
Is there continuity on J408-5 ↔ J408-6 when
SWITCH-I/L CAB is pressed, and does the
continuity stop when the switch is released?
Continuity check of HARNESS-ASSY P/H1 Go to Step [4]. Replace
3 Disconnect the P/J408 from PWBA MCU. HARNESS-
Do all of the wiring below have normal ASSY P/H1.
continuity?
J408-5 ↔ J603-8
J408-6 ↔ J603-7

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 EPSON AcuLaser C1100 Revision B

FIP-66 Step Check Yes No

Continuity check of HARNESS ASSY Replace Replace
† Panel Message 4 2BTR SW SWITCH 2BTR HARNESS
„ F Open Disconnect the P/J418 from the PWBA MCU. COVER. ASSY 2BTR
Do all of the wiring below have normal (p.352) SW.
† Possible parts that caused the error continuity?
„ CHUTE ASSY-FSR „ SWITCH 2BTR COVER P621-1 ↔ J113-2
P621-2 ↔ J113-1
„ HARNESS ASSY ADC „ HARNESS ASSY 2BTR SW
„ PWBA MCU „ LV/HVPS 5 Power supply check to PWBA MCU Replace PWBA Go to Step [6].
Is the specified DC voltage being supplied to MCU. (p.404)
† Troubleshooting the following terminals on PWBA MCU?
P410-1 ↔ P410-2: 3. 3 VDC
Step Check Yes No P410-3 ↔ P410-4: 5 VDC
Shape check of CHUTE ASSY-FSR Replace Go to Step [2]. P410-5/6 ↔ P410-7/8: 24 VDC
1 Is the actuator of CHUTE ASSY-FSR that CHUTE ASSY- Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
presses SWITCH 2BTR COVER damaged? FSR. (p.341) 6 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
J502 from LV/HVPS.
Actuator
Do all of the wiring below have normal
continuity?
J410-1 ↔ J502-1
J410-2 ↔ J502-2
J410-3 ↔ J502-3
J410-4 ↔ J502-4
Operation check of SWITCH 2BTR COVER Go to Step [5]. Go to Step [3]. J410-5 ↔ J502-5
2 Disconnect the P/J418 from PWBA MCU. J410-6 ↔ J502-6
Is there continuity on J418-7 ↔ J418-8 when J410-7 ↔ J502-7
SWITCH 2BTR COVER is pressed, and does J410-8 ↔ J502-8
the continuity stop when the switch is
released?
Continuity check of HARNESS ASSY ADC Go to Step [4]. Replace
3 Disconnect the P/J418 from the PWBA MCU. HARNESS
Do all of the wiring below have normal ASSY ADC.
continuity?
J418-7 ↔ J621-2
J418-8 ↔ J621-1

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 EPSON AcuLaser C1100 Revision B

FIP-67 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [6]. Repair broken
† Panel Message 5 Do all of the wiring below have normal or shorted part.
„ C Open continuity?
J403-11 ↔ J114-2
† Possible parts that caused the error
J403-12 ↔ J114-1
„ COVER FUSER „ SWITCH-FUSER DOOR Power supply check to PWBA MCU Replace PWBA Go to Step [7].
„ PWBA MCU „ LV/HVPS 6 Is the specified DC voltage being supplied to MCU. (p.404)
the following terminals on PWBA MCU?
† Troubleshooting P410-1 ↔ P410-2: 3. 3 VDC
P410-3 ↔ P410-4: 5 VDC
Step Check Yes No P410-5/6 ↔ P410-7/8: 24 VDC
Check of open/close state of COVER Go to Step [3]. Close the cover.
1 Is COVER FUSER closed? Go to Step [2]. 7 Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Does the error recur when the power is Go to Step [3]. End of J502 from LV/HVPS.
2 turned ON? procedure Do all of the wiring below have normal
continuity?
Shape check of COVER FUSER Replace Go to Step [4].
3 Is the actuator of COVER FUSER that presses COVER J410-1 ↔ J502-1
SWITCH-FUSER DOOR deformed or FUSER. (p.285) J410-2 ↔ J502-2
damaged? J410-3 ↔ J502-3
J410-4 ↔ J502-4
J410-5 ↔ J502-5
J410-6 ↔ J502-6
J410-7 ↔ J502-7
J410-8 ↔ J502-8

Actuator

Operation check of SWITCH-FUSER DOOR Go to Step [5]. Replace

4 Disconnect SWITCH-FUSER DOOR P/J114. SWITCH-
Is there continuity on P114-1 ↔ P114-2 when FUSER DOOR.
SWITCH-FUSER DOOR is pressed, and does (p.298)
the continuity stop when the switch is
released?

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 EPSON AcuLaser C1100 Revision B

FIP-68 Step Check Yes No

Continuity check of HARNESS-ASSY FEED 1 Go to Step [5]. Replace
† Panel Message 4 Disconnect P/J435 from PWBA TRAY CONT. HARNESS-
„ G Open Is the continuity normal between all terminals ASSY FEED 1.
of J435 ↔ P608 (connector on Feeder to be (p.462)
† Possible parts that caused the error connected to the printer)?
„ CHUTE FDR ASSY 500 „ SWITCH FEEDER DOOR Continuity check of HARNESS ASSY MAIN Go to Step [6]. Repair broken
„ HARNESS-ASSY FEED MAIN „ HARNESS-ASSY FEED 1
5 Disconnect P/J421 from PWBA MCU. or shorted part.
„ HARNESS ASSY MAIN „ PWBA MCU Is the continuity normal between all terminals
of J421 ↔ J608 (connector on the printer to
„ LV/HVPS
connect Feeder)?
† Troubleshooting Power supply check to PWBA MCU Replace PWBA Go to Step [7].
6 Is the specified DC voltage being supplied to MCU. (p.404)
Step Check Yes No the following terminals on PWBA MCU?
Shape check of CHUTE FDR ASSY 500 Replace Go to Step [2]. P410-1 ↔ P410-2: 3. 3 VDC
1 Is the actuator of CHUTE FDR ASSY 500 that CHUTE FDR P410-3 ↔ P410-4: 5 VDC
presses SWITCH FEEDER DOOR damaged? ASSY 500. P410-5/6 ↔ P410-7/8: 24 VDC
(p.454)
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Actuator 7 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
J502 from LV/HVPS.
Do all of the wiring below have normal
continuity?
J410-1 ↔ J502-1
J410-2 ↔ J502-2
Operation check of SWITCH FEEDER DOOR Go to Step [4]. Go to Step [3]. J410-3 ↔ J502-3
2 Disconnect P/J437 from PWBA TRAY 500. J410-4 ↔ J502-4
Is there continuity on J437-8 ↔ J437-9 when J410-5 ↔ J502-5
SWITCH FEEDER DOOR is pressed, and J410-6 ↔ J502-6
does the continuity stop when the switch is J410-7 ↔ J502-7
released? J410-8 ↔ J502-8
Continuity check of HARNESS-ASSY Replace Replace
3 FEED MAIN SWITCH HARNESS-
Disconnect P/J437 from PWBA TRAY 500. FEEDER ASSY FEED
Do all of the wiring below have normal DOOR. (p.464) MAIN.
continuity?
J437-8 ↔ J121-2
J437-9 ↔ J121-1

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 EPSON AcuLaser C1100 Revision B

FIP-69 Step Check Yes No

Continuity check of HARNESS-ASSY DUP2 Go to Step [5]. Replace
† Panel Message 4 Disconnect P/J443 from PWBA DUP-L. HARNESS-
„ DM Open Is the continuity normal between all terminals ASSY DUP2.
of J443 ↔ P607 (connector on Duplex to be
† Possible parts that caused the error connected to the printer)?
„ COVER UP-DUP TRANS „ SWITCH-DUP DOOR Continuity check of HARNESS ASSY MAIN Go to Step [6]. Repair broken
„ HARNESS-ASSY DUP1 „ HARNRSS-ASSY DUP2
5 Disconnect the P/J420 from PWBA MCU. or shorted part.
„ HARNESS ASSY MAIN „ PWBA DUP-L Is the continuity normal between all terminals
of J420 ↔ J607?
„ PWBA MCU „ LV/HVPS
Check after replacement of PWBA DUP-L Go to Step [7]. End of
† Troubleshooting 6 Replace PWBA DUP-L. (p.442) procedure
Does the error recur when the power is turned
Step Check Yes No ON?
Shape check of COVER UP-DUP TRANS Replace Go to Step [2].
1 Is the actuator of COVER UP-DUP TRANS COVER UP- 7 Check after replacement of PWBA MCU Go to Step [8]. End of
procedure
Replace PWBA MCU. (p.404)
that presses SWITCH-DUP DOOR damaged? DUP TRANS.
(p.437) Does the error recur when the power is turned
ON?
Actuator
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
8 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
J502 from LV/HVPS.
Do all of the wiring below have normal
continuity?
J410-1 ↔ J502-1
Operation check of SWITCH-DUP DOOR Go to Step [4]. Go to Step [3]. J410-2 ↔ J502-2
2 Disconnect P/J444 from PWBA DUP-L. J410-3 ↔ J502-3
Is there continuity on J444-1 ↔ J444-2 when J410-4 ↔ J502-4
SWITCH-DUP DOOR is pressed, and does J410-5 ↔ J502-5
continuity stop when the switch is released?
J410-6 ↔ J502-6
Continuity check of HARNESS-ASSY DUP1 Replace Replace J410-7 ↔ J502-7
3 Disconnect P/J444 from PWBA DUP-L. SWITCH-DUP HARNESS- J410-8 ↔ J502-8
Do all of the wiring below have normal DOOR. (p.430) ASSY DUP1.
continuity?
J444-1 ↔ J122-2
J444-2 ↔ J122-1

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 EPSON AcuLaser C1100 Revision B

FIP-70 Step Check Yes No

Power supply check to PWBA MCU Replace PWBA Go to Step [5].
† Panel Message 4 Is the specified DC voltage being supplied to MCU. (p.404)
„ D Open the following terminals on PWBA MCU?
P410-1 ↔ P410-2: 3. 3 VDC
† Possible parts that caused the error
P410-3 ↔ P410-4: 5 VDC
„ COVER-L DUP „ SWITCH-FUSER DOOR P410-5/6 ↔ P410-7/8: 24 VDC
„ HARNESS ASSY MAIN „ PWBA MCU Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
„ LV/HVPS
5 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
J502 from LV/HVPS.
† Troubleshooting Do all of the wiring below have normal
continuity?
Step Check Yes No J410-1 ↔ J502-1
Shape check of COVER-L DUP on Duplex Replace Go to Step [2]. J410-2 ↔ J502-2
1 Is the actuator of the Duplex that presses COVER-L DUP. J410-3 ↔ J502-3
SWITCH-FUSER DOOR damaged? (p.414) J410-4 ↔ J502-4
J410-5 ↔ J502-5
Actuator J410-6 ↔ J502-6
J410-7 ↔ J502-7
J410-8 ↔ J502-8

Operation check of SWITCH-FUSER DOOR Go to Step [4]. Go to Step [3].

2 Disconnect the P/J403 from PWBA MCU.
Is there continuity on J403-11 ↔ J402-12
when the switch of SWITCH-FUSER DOOR
is pressed, and does the continuity stop when
the switch is released?
Continuity check of HARNESS ASSY MAIN Replace Repair broken
3 Disconnect the P/J403 from PWBA MCU. SWITCH- or shorted part.
Do all of the wiring below have normal FUSER DOOR.
continuity? (p.298)
J403-11 ↔ J114-2
J403-12 ↔ J114-1

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 EPSON AcuLaser C1100 Revision B

FIP-71 Step Check Yes No

Shape check of COVER FRONT ASSY U Replace Go to Step [5].
† Panel Message 4 Is the actuator of COVER FRONT ASSY U COVER
„ B Open that presses SWITCH-INLK FRONT FRONT
deformed or damaged? ASSY U.
† Possible parts that caused the error (p.292)
Actuator
„ COVER TOP „ COVER FRONT ASSY U
„ COVER FUSER „ SWITCH ASSY TOP
„ SWITCH-INLK FRONT „ SWITCH-INLK FUSER
„ PWBA MCU „ LV/HVPS

† Troubleshooting
Shape check of COVER FUSER Replace COVER Go to Step [6].
Step Check Yes No
5 Is the actuator of COVER FUSER that presses FUSER. (p.285)
SWITCH-INLK FUSER deformed or
Check of open/close state of COVER Go to Step [3]. Close the cover.
1 Are all the COVER TOP, COVER FRONT Go to Step [2].
damaged?
ASSY U, and COVER FUSER closed?
Does the error recur when the power is Go to Step [3]. End of
2 turned ON? procedure
Shape check of COVER TOP Replace Go to Step [4].
3 Is the actuator of COVER TOP that presses COVER ASSY
SWITCH ASSY TOP deformed or damaged? TOP. (p.283) Actuator

Operation check of SWITCH ASSY TOP Go to Step [7]. Replace

Actuator 6 Disconnect P/J116 from SWITCH ASSY SWITCH
TOP. ASSY TOP.
Is there continuity on P116-1 ↔ P116-3 when (p.288)
SWITCH ASSY TOP is pressed, and does the
continuity stop when the switch is released?
Operation check of SWITCH-INLK FRONT Go to Step [8]. Replace
7 Disconnect P/J115 from SWITCH-INLK SWITCH-INLK
FRONT. FRONT.
Is there continuity on P115-1 ↔ P115-3 when (p.300)
SWITCH-INLK FRONT is pressed, and does
the continuity stop when the switch is
released?

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No

Operation check of SWITCH-INLK FUSER Go to Step [9]. Replace
8 Disconnect P/J117 from SWITCH-INLK SWITCH-INLK
FUSER. FUSER. (p.303)
Is there continuity on P117-1 ↔ P117-3 when
SWITCH-INLK FUSER is pressed, and does
the continuity stop when the switch is
released?
Power supply check to PWBA MCU Replace PWBA Go to Step [10].
9 Is the specified DC voltage being supplied to MCU. (p.404)
the following terminals on PWBA MCU?
P410-1 ↔ P410-2: 3. 3 VDC
P410-3 ↔ P410-4: 5 VDC
P410-5/6 ↔ P410-7/8: 24 VDC
Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
10 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
J502 from LV/HVPS.
Do all of the wiring below have normal
continuity?
J410-1 ↔ J502-1
J410-2 ↔ J502-2
J410-3 ↔ J502-3
J410-4 ↔ J502-4
J410-5 ↔ J502-5
J410-6 ↔ J502-6
J410-7 ↔ J502-7
J410-8 ↔ J502-8

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 EPSON AcuLaser C1100 Revision B

FIP-72 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [7]. Repair broken
† Panel Message 6 Disconnect P/J415 from PWBA MCU. or shorted part.
„ Y Toner Low Do all of the wiring below have normal
continuity?
† Possible parts that caused the error
J415-1 ↔ J106-2
„ Toner Cartridge Y „ ANTENNA ASSY-CTRG J415-2 ↔ J106-1
„ HARNESS ASSY MAIN „ ANTENNA CTRG Check after replacement of ANTENNA Replace PWBA End of
„ PWBA MCU
7 ASSY-CTRG or ANTENNA CTRG MCU. (p.404) procedure
Replace ANTENNA ASSY-CTRG or
† Troubleshooting ANTENNA CTRG. (p.379) or (p.380)
Does the error recur when the power is turned
Step Check Yes No ON?
Check of Toner Cartridge Y attachment Go to Step [4]. Re-attach, and
1 Is Toner Cartridge Y attached correctly? go to step [2].

Does the error recur when the power is Go to Step [3]. End of
2 turned ON? procedure
Check after replacement of Toner Cartridge Y Go to Step [4]. End of
3 Replace Toner Cartridge Y. procedure
Does the error recur when the power is turned
ON?
Check of ANTENNA CTRG Clean Go to Step [5].
4 Is ANTENNA CTRG dirty and damaged? ANTENNA
CTRG, and then
proceed to step
[5].
Operation check of ANTENNA CTRG Go to Step [6]. End of
5 Disconnect the P/J415 from the PWBA MCU. procedure
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-73 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [7]. Repair broken
† Panel Message 6 Disconnect P/J415 from PWBA MCU. or shorted part.
„ M Toner Low Do all of the wiring below have normal
continuity?
† Possible parts that caused the error
J415-1 ↔ J106-2
„ Toner Cartridge M „ ANTENNA ASSY-CTRG J415-2 ↔ J106-1
„ HARNESS ASSY MAIN „ ANTENNA CTRG Check after replacement of ANTENNA Replace PWBA End of
„ PWBA MCU
7 ASSY-CTRG or ANTENNA CTRG MCU. (p.404) procedure
Replace ANTENNA ASSY-CTRG or
† Troubleshooting ANTENNA CTRG. (p.379) or (p.380)
Does the error recur when the power is turned
Step Check Yes No ON?
Check of Toner Cartridge M attachment Go to Step [4]. Re-attach, and
1 Is Toner Cartridge M attached correctly? go to step [2].

Does the error recur when the power is Go to Step [3]. End of
2 turned ON? procedure
Check after replacement of Toner Cartridge M Go to Step [4]. End of
3 Replace Toner Cartridge M. procedure
Does the error recur when the power is turned
ON?
Check of ANTENNA CTRG Clean Go to Step [5].
4 Is ANTENNA CTRG dirty and damaged? ANTENNA
CTRG, and then
proceed to step
[5].
Operation check of ANTENNA CTRG Go to Step [6]. End of
5 Disconnect the P/J415 from PWBA MCU and procedure
reconnect it.
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-74 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [7]. Repair broken
† Panel Message 6 Disconnect P/J415 from PWBA MCU. or shorted part.
„ C Toner Low Do all of the wiring below have normal
continuity?
† Possible parts that caused the error
J415-1 ↔ J106-2
„ Toner Cartridge C „ ANTENNA ASSY-CTRG J415-2 ↔ J106-1
„ HARNESS ASSY MAIN „ ANTENNA CTRG Check after replacement of ANTENNA Replace PWBA End of
„ PWBA MCU
7 ASSY-CTRG or ANTENNA CTRG MCU. (p.404) procedure
Replace ANTENNA ASSY-CTRG or
† Troubleshooting ANTENNA CTRG. (p.379) or (p.380)
Does the error recur when the power is turned
Step Check Yes No ON?
Check of Toner Cartridge C attachment Go to Step [4]. Re-attach, and
1 Is Toner Cartridge C attached correctly? go to step [2].

Does the error recur when the power is Go to Step [3]. End of
2 turned ON? procedure
Check after replacement of Toner Cartridge C Go to Step [4]. End of
3 Replace Toner Cartridge C. procedure
Does the error recur when the power is turned
ON?
Check of ANTENNA CTRG Clean Go to Step [5].
4 Is ANTENNA CTRG dirty and damaged? ANTENNA
CTRG, and then
proceed to step
[5].
Operation check of ANTENNA CTRG Go to Step [6]. End of
5 Disconnect the P/J415 from PWBA MCU. procedure
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-75 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [7]. Repair broken
† Panel Message 6 Disconnect P/J415 from PWBA MCU. or shorted part.
„ K Toner Low Do all of the wiring below have normal
continuity?
† Possible parts that caused the error
J415-1 ↔ J106-2
„ Toner Cartridge K „ ANTENNA ASSY-CTRG J415-2 ↔ J106-1
„ HARNESS ASSY MAIN „ ANTENNA CTRG Check after replacement of ANTENNA Replace PWBA End of
„ PWBA MCU
7 ASSY-CTRG or ANTENNA CTRG MCU. (p.404) procedure
Replace ANTENNA ASSY-CTRG or
† Troubleshooting ANTENNA CTRG. (p.379) or (p.380)
Does the error recur when the power is turned
Step Check Yes No ON?
Check of Toner Cartridge K attachment Go to Step [4]. Re-attach, and
1 Is Toner Cartridge K attached correctly? go to step [2].

Does the error recur when the power is Go to Step [3]. End of
2 turned ON? procedure
Check after replacement of Toner Cartridge K Go to Step [4]. End of
3 Replace Toner Cartridge K. procedure
Does the error recur when the power is turned
ON?
Check of ANTENNA CTRG Clean Go to Step [5].
4 Is ANTENNA CTRG dirty and damaged? ANTENNA
CTRG, and then
proceed to step
[5].
Operation check of ANTENNA CTRG Go to Step [6]. End of
5 Disconnect the P/J415 from PWBA MCU and procedure
reconnect it.
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-76 Step Check Yes No

Continuity check of HARNESS ASSY MAIN Go to Step [7]. Repair broken
† Panel Message 6 Do all of the wiring below have normal or shorted part.
„ Worn Photoconductor continuity.
J413-10 ↔ J617-3
† Possible parts that caused the error
J413-11 ↔ J617-2
„ Photoconductor Unit „ SENSOR TNER FULL J413-12 ↔ J617-1
„ HARNESS ASSY MAIN „ HARNESS-ASSY TNER FULL Continuity check of HARNESS ASSY TNR Replace Repair broken
„ PWBA MCU „ LV/HVPS
7 FULL SENSOR or shorted part.
Disconnect P/J617. TNER FULL.
† Troubleshooting Do all of the wiring below have normal (p.374)
continuity?
Step Check Yes No P617-1 ↔ J126-3
Attachment check of Photoconductor Unit Go to Step [3]. Re-attach, and P617-2 ↔ J126-2
1 Is Photoconductor Unit attached correctly? go to step [2]. P617-3 ↔ J126-1
5 VDC power supply check to PWBA MCU Replace PWBA Go to Step [9].
2 Does the error recur when the power is
turned ON?
Go to Step [3]. End of
procedure
8 The voltage of P410-3 ↔ P410-4 on PWBA MCU. (p.404)
MCU is 5 VDC?
Check after replacement of Go to Step [4]. End of
3 Photoconductor Unit procedure Continuity check of HARNESS ASSY MAIN Replace LV/ Repair broken
Replace Photoconductor Unit.
9 Disconnect P/J410 from PWBA MCU and P/ HVPS. (p.407) or shorted part.
Does the error occur when the power is turned J502 from LV/HVPS.
ON? Do all of the wiring below have normal
continuity?
Operation check of SONSOR TNER FULL Replace PWBA Go to Step [5].
4 (Toner Full Sensor) MCU. (p.404) J410-3 ↔ J502-3
Remove Photoconductor Unit. J410-4 ↔ J502-4
The voltage of P413-11 ↔ P413-10 on
PWBA MCU is 0 VDC when the sensor
sensing area is blocked, and is 5 VDC when
the sensing area is not blocked?
5 VDC power supply check to SENSOR Go to Step [6]. Go to Step [8].
5 TNER FULL
The voltage of P413-12 ↔ P413-10 on
PWBA MCU is 5 VDC?

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 EPSON AcuLaser C1100 Revision B

FIP-77 Step Check Yes No

Continuity check of HARNESS-ASSY XERO Go to Step [6]. Replace
† Panel Message 5 Disconnect the J416 from PWBA MCU. HARNESS-
„ Worn Photoconductor Do all of the wiring below have normal ASSY XERO.
continuity?
† Possible parts that caused the error
J416-4 ↔ J109-2
„ Photoconductor Unit „ GUIDE CRU ASSY D or ANTENNA ASSY J416-5 ↔ J109-1
„ HARNESS-ASSY XERO „ PWBA MCU Check after replacement of GUIDE CRU Replace PWBA End of
„ LV/HVPS
6 ASSY D or ANTENNA ASSY MCU. (p.404) procedure
Replace GUIDE CRU ASSY D or
† Troubleshooting ANTENNA ASSY. (p.362) or (p.365)
Does the error recur when the power is turned
Step Check Yes No ON?
Attachment check of Photoconductor Unit Go to Step [3]. Re-attach, and
1 Is Photoconductor Unit attached correctly? go to step [2].

Does the error recur when the power is Go to Step [3]. End of
2 turned ON? procedure
Check after replacement of Go to Step [4]. End of
3 Photoconductor Unit procedure
Replace Photoconductor Unit.
Does the error occur when the power is turned
ON?
Operation check of ANTENNA CTRG Go to Step [6]. End of
4 Disconnect the P/J416 from the PWBA MCU. procedure
Does the error recur when the power is turned
ON?

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 EPSON AcuLaser C1100 Revision B

FIP-78

† Panel Message
„ Service Req E998
† Possible parts that caused the error

„ FFC-ASSY ESS „ PWBA MCU

„ BOARD ASSY., MAIN

† Troubleshooting

Step Check Yes No

Check if the firmware version of the PWBA Go to Step [2]. Update the
1 MCU firmware.
Check the firmware version of the PWBA
MCU.
Is the version latest ?
Check if the firmware version of the printer Go to Step [3]. Update the
2 controller firmware.
Check the firmware version of the printer
controller
Is the version latest ?
Continuity check of FFC-ASSY ESS Go to Step [4]. Replace the
3 1. Disconnect the P/J400 on the PWBA FFC-ASSY
MCU. ESS.
2. Disconnect the CN601 on the BOARD
ASSY., MAIN
3. Check each wiring for continuity.
Do all of the wiring have continuity ?
Replacement of the BOARD ASSY., MAIN Replace the End of
4 Replace the BOARD ASSY., MAIN. PWBA MCU. procedure
Does the error occur ?

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 EPSON AcuLaser C1100 Revision B

FIP-79 Electrical Noise Step Check Yes No

Check of grounding of boards Go to Step [6]. Tighten the
† Possible parts that caused the error 5 Are all screws fastening PWBA MCU and screws.
LV/HVPS to the frame tightened firmly?
„ Photoconductor Unit „ HOUSING ASSY-GUIDE AD
Also, are all screws fastening the PWBA
„ FUSER ASSY „ PWBA MCU TRAY 500 of Feeder to the frame tightened
„ LV/HVPS firmly?
Likewise, are all screws fastening PWBA
† Troubleshooting DUP-L of DUPLEX to the frame tightened
firmly?
Step Check Yes No
Check after replacement of FUSER ASSY Go to Step [7]. End of
Check of external noise Go to Step [2]. End of 6
1 Are there any other electrical apparatus (e. g. procedure
W A R N IN G
Allow FUSER ASSY to cool down
before performing work.
procedure

generators, wireless transmitters, or

Replace FUSER. (p.388)
equipment that use motors) within 3 m of the
printer? Does the electrical noise problem still
continue after replacement?
Either turn the other electrical apparatus OFF,
or reposition the printer at least 6 m away Check after replacement of PWBA MCU Replace all End of
from other electrical apparatus. 7 Replace PWBA MCU. (p.407) related parts. procedure
Does the electrical noise problem still Does the electrical noise problem still
continue? continue after replacement?
Check of AC ground Go to Step [3]. Ask the
2 Is the AC power outlet wired and grounded customer to
correctly? repair the AC
power outlet.
Check after replacement of Go to Step [4]. End of
3 Photoconductor Unit procedure
Replace DRU ASSY.
Does the electrical noise problem still
continue after replacement?
Check of contact between Photoconductor Replace GUIDE Go to Step [5].
4 Unit and HOUSING ASSY-GUIDE AD CRU ASSY
Remove Photoconductor Unit. AD.
Is the contact surface of Photoconductor Unit
and CONDUCTOR attached to HOUSING
ASSY-GUIDE AD deformed or are there
foreign objects on the surface?

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 EPSON AcuLaser C1100 Revision B

3.3.3.2 Controller related error † Troubleshooting

C H E C K Since a controller-related service call error may occur due to the Step Check Yes No
P O IN T print data structure sent by the host/application, make operation External noise Replace the End of
check while simultaneously changing the operating environment, 1 1. Check the surrounding of the printer for PWBA ESS. procedure
print data, etc. electrical equipment. (p.409)
2. Disconnect all cables connected to the
printer, except the AC cable, and make
FIP-C1 operation check.
Does the error occur?
† Panel Message

„ Service Req C0017 „ Service Req C0097

„ Service Req C0081 „ Service Req C0098
„ Service Req C0082 „ Service Req C0128-0254
„ Service Req C0083 „ Service Req C0255
„ Service Req C0084 „ Service Req C0256
„ Service Req C0085 „ Service Req C0257
„ Service Req C0086 „ Service Req C0258
„ Service Req C0087 „ Service Req C0800
„ Service Req C0088 „ Service Req C0998
„ Service Req C0089 „ Service Req C1400
„ Service Req C0090 „ Service Req C1500
„ Service Req C0091 „ Service Req C1550
„ Service Req C0092 „ Service Req C1600
„ Service Req C0093 „ Service Req C1610
„ Service Req C0094 „ Service Req C1800
„ Service Req C0095 „ Service Req C1999
„ Service Req C0096
† Possible parts that caused the error
„ PWBA ESS

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 EPSON AcuLaser C1100 Revision B

FIP-C2 FIP-C3

† Panel Message † Panel Message

„ Service Req C0999 „ Service Req C1121 „ Service Req C1020 „ Service Req C1021
„ Service Req C1002 „ Service Req C1122 † Possible parts that caused the error
„ Service Req C1010 „ Service Req C1123
„ Service Req C1120 „ PWBA ESS „ RAM-DIMM
† Possible parts that caused the error † Troubleshooting

„ PWBA ESS „ Standard ROM-DIMM Step Check Yes No

† Troubleshooting Check of RAM-DIMM To Step [2] End of
1 Check whether the installed RAM-DIMM is procedure
Step Check Yes No the specified one and is securely connected.
(Remove it once and reinstall it again.)
Check of Standard ROM-DIMM To Step [2] End of
1 1. Check whether the installed ROM-DIMM procedure
Does the error occur?
Replace the RAM-DIMM To Step [3] End of
is the specified one and is securely
connected. (Remove it once and reinstall it
2 1. Replace the Standard RAM-DIMM. procedure
again.) Does the error occur?
Does the error occur?
External noise Replace the End of
Replace the Standard ROM-DIMM To Step [3] End of 3
2 1. Replace the Standard ROM-DIMM. procedure
1. Check the surrounding of the printer for
electrical equipment.
PWBA ESS.
(p.409)
procedure

Does the error occur? 2. Disconnect all cables connected to the

printer, except the AC cable, and make
External noise Replace the End of
3 1. Check the surrounding of the printer for PWBA ESS. procedure
operation check.
(p.409) Does the error occur?
electrical equipment.
2. Disconnect all cables connected to the
printer, except the AC cable, and make
operation check.
Does the error occur?

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 EPSON AcuLaser C1100 Revision B

FIP-C4 FIP-C5

† Panel Message † Panel Message

„ Service Req C1200 „ Service Req C1210 „ Service Req C2000

† Possible parts that caused the error † Possible parts that caused the error
„ PWBA ESS „ PWBA ESS
† Troubleshooting † Troubleshooting

Step Check Yes No Step Check Yes No

Check of host PC To Step [2] End of
1 Check of EEPROM
Initialize the EEPROM. Refer to “EEPROM
To Step [2] End of
procedure
1 Restart the host PC. procedure
initialization” (p.55) Does the error occur?
Does the error occur? Check of Printer Driver To Step [3] End of
External noise Replace the End of
2 Reinstall the Printer Driver. procedure
2 1. Check the surrounding of the printer for PWBA ESS. procedure Does the error occur?
electrical equipment. (p.409)
External noise Replace the End of
2. Disconnect all cables connected to the 3 1. Check the surrounding of the printer for PWBA ESS. procedure
printer, except the AC cable, and make (p.409)
electrical equipment.
operation check.
2. Disconnect all cables connected to the
Does the error occur?
printer, except the AC cable, and make
operation check.
Does the error occur?

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 EPSON AcuLaser C1100 Revision B

3.4 Printing Quality-related Trouble To reliably judge and understand the details of trouble, and perform the correct remedy
efficiently when printing quality-related trouble occurs, make a test print, and use the
FIP tables corresponding to the phenomena.
3.4.1 Printing-quality troubleshooting Entry Chart When trouble cannot be restored by the printing quality-related FIP, check again using
the FIP, and then replace all parts indicated in the “ESS and possible parts that caused
the error” one by one to check the parts and perform troubleshooting.
START

The printing quality-related FIPs describe typical troubles as below.

Make a sample test print „ FIP-P1 Printing is Faint (Weak Tones)
„ FIP-P2 Blank Print
Is there an applicable FIP?
No „ FIP-P3 Solid Black Print
„ FIP-P4 Vertical White Bands or Lines
Yes

Replace Photoconductor Unit and

„ FIP-P5 Horizontal White Bands or Lines
Perform the appropriate troubleshooting
FUSER ASSY in that order
„ FIP-P6 Vertical Black Lines
No No
„ FIP-P7 Horizontal Black Lines
Trouble restored? Trouble restored?
„ FIP-P8 Image is Partially Not Printed
Yes Yes „ FIP-P9 Toner Smudges
END END „ FIP-P10 Residual Image
„ FIP-P11 Dark or Dirty Background
Leg_Sec001_001FA
„ FIP-P12 Skew Print
Figure 3-4. Printing-quality troubleshooting Entry Chart
„ FIP-P13 Print Paper Damage
NOTE: The printing-quality troubleshooting described here is based on a
condition that the printer controller has no problems. „ FIP-P14 Image Not Fixed
However, making a test print with only the engine side, allows you to find „ FIP-P15 Color Shift
out roughly which side (controller side or engine side) is causing the
„ FIP-P16 Uneven Density/Thin-Spot
trouble, except for cases that cannot be checked by the test print.
• Test print with the engine alone is normal → Printer controller trouble „ FIP-P17 Entirely Faint
• Test print on engine alone is abnormal → Printer engine trouble „ FIP-P18 Entirely Fogged in Black
If the probable cause is “printer controller trouble,” replace with a
normal printer controller and interface cable, and check. „ FIP-P19 Entirely Thin
If the trouble recurs after replacing with the normal parts, check on the „ FIP-P20 Uneven Density in Horizontal Direction
host side, and use the printer quality FIPs to perform efficient
troubleshooting.

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 EPSON AcuLaser C1100 Revision B

NOTE: When horizontal stripes and spots appear at fixed intervals, it is highly
possible that a specific roll has caused the trouble. If this happens, you
might be able to easily solve the problem by measuring the interval
between the stripes or spots on a test print, and checking the relationship
between the pitches shown in the table below (note that the pitch does not
necessarily match the length of the roll periphery).

Table 3-4. Trouble occurrence pitches

Pitch (mm) Roll Unit to be replaced

150. 41 Drum Photoconductor Unit

38. 40 BCR Photoconductor Unit

37. 52 1st BTR Photoconductor Unit

• IBT Belt Photoconductor Unit
25. 73
• Cleaner Brush
51. 05 2nd BTR 2ND BTR ASSY

82. 33 Heat Roll FUSER ASSY

94. 42 Pressure Roll FUSER ASSY

7. 54 PR Motor MOT ASSY P/R

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 EPSON AcuLaser C1100 Revision B

3.4.2 Printing quality-related FIP Step Check Yes No

Check of ROS window Clean the ROS Go to Step [4].
FIP-P1 Printing is Faint (Weak Tones) 3 Is ROS window dirty? window with
CLEANER
† Problems ASSY.
Check of toner cartridge attachment End of Go to Step [5].
Overall density of image is too weak. 4 Re-attach the toner cartridge, and make a test procedure
† ESS and possible parts that caused the error print of the problem image.
„ Photoconductor Unit Is the image printed normally?
„ ROS ASSY Check of 2ND BTR ASSY Go to Step [6]. Replace 2ND
„ Toner Cartridge Y 5 Remove 2ND BTR ASSY. (p.348) BTR ASSY.
„ Toner Cartridge M Is 2ND BTR ASSY normal without any dirt, (p.348)
„ Toner Cartridge C damage or wear?
„ Toner Cartridge K Check of contact between Photoconductor Clean or replace Go to Step [7].
„ 2ND BTR ASSY 6 Unit and frame relevant parts.
„ HOUSING ASSY-GUIDE AD Are the contacts of Photoconductor Unit and
„ MOT ASSY MAG HOUSING ASSY-GUIDE AD dirty or
„ PWBA ESS deformed?
„ PWBA MCU Check after replacement of End of Go to Step [8].
„ LV/HVPS 7 Photoconductor Unit procedure
„ FUSER ASSY Replace Photoconductor Unit.
„ 500 FEEDER ASSY OPTION Make a test print of the problem image.
Is the image printed normally?
Before starting troubleshooting, inspect the feed path of the printer paper. Check the
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter. Check after replacement of Toner Cartridge End of Go to Step [9].
8 Replace Toner Cartridge Y/M/C/K. procedure
Step Check Yes No
Make a test print of the problem image.
Check of Paper End of Go to Step [2].
1 Load new, dry recommended paper, and procedure
Is the image printed normally?
Check after replacement of PWBA MCU End of Go to Step [10].
execute a test print. 9 Replace PWBA MCU. (p.404) procedure
Is the image printed normally?
Make a test print of the problem image.
Check of laser beam path Remove Go to Step [3].
2 Are there any obstructions between ROS obstacles.
Is the image printed normally?
Check after replacement of ROS ASSY End of Go to Step [11].
ASSY and Photoconductor Unit? 10 Replace ROS ASSY. (p.375) procedure
Make a test print of the problem image.
Is the image printed normally?

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Step Check Yes No

Check after replacement of the MOT ASSY End of Go to Step [12].
11 MAG procedure
Replace MOT ASSY MAG. (p.396)
Make a test print of the problem image.
Is the image printed normally?
Check of image primary transfer process Go to Step [13]. Replace LV/
12 Is the toner image on the drum transferred HVPS. (p.407)
normally to IBT BELT?
Execute a test print, turn the power OFF when
you think that the primary transfer process is
in progress during printing, and check the
toner image on IBT BELT.
Check of image secondary transfer process Replace “ESS Replace LV/
13 Is the toner image on IBT BELT transferred and possible HVPS. (p.407)
normally to the paper? parts that caused
Execute a test print, turn the power OFF when the error”.
you think that the image transfer process is in
progress during printing, and check the paper.

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 EPSON AcuLaser C1100 Revision B

FIP-P2 Blank Print Step Check Yes No

Check of toner cartridge attachment End of Go to Step [5].
† Problems 4 Re-attach the toner cartridge, and make a test procedure
Completely blank pages are printed. print of the problem image.
Is the image printed normally?
† ESS and possible parts that caused the error
Check of 2ND BTR ASSY Go to Step [6]. Replace 2ND
„ Photoconductor Unit 5 Remove 2ND BTR ASSY. (p.348) BTR ASSY.
„ ROS ASSY Is 2ND BTR ASSY normal without any dirt, (p.348)
„ Toner Cartridge Y damage or wear?
„ Toner Cartridge M
Check of contact between Photoconductor Clean or replace Go to Step [7].
„ Toner Cartridge C 6 Unit and frame relevant parts.
„ Toner Cartridge K Are the contacts of Photoconductor Unit and
„ 2ND BTR ASSY HOUSING ASSY-GUIDE AD dirty or
„ HOUSING ASSY-GUIDE AD deformed?
„ MOTOR ASSY MAG Check after replacement of End of Go to Step [8].
„ PWBA ESS 7 Photoconductor Unit procedure
„ PWBA MCU Replace Photoconductor Unit.
„ LV/HVPS Make a test print of the problem image.
„ FUSER ASSY Is the image printed normally?
„ 500 FEEDER ASSY OPTION
Check after replacement of Toner Cartridge End of Go to step [9]
Before starting troubleshooting, inspect the feed path of the printer paper. Check the 8 Replace Toner Cartridge Y/M/C/K. procedure
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter. Make a test print of the problem image.
Is the image printed normally?
Step Check Yes No
Check after replacement of PWBA MCU End of Go to Step [10].
1 Check of laser beam path Remove Go to Step [2]. 9 Replace PWBA MCU. (p.404) procedure
Are there any obstructions between ROS obstacles.
ASSY and Photoconductor Unit? Make a test print of the problem image.
Is the image printed normally?
Is ROS window completely covered by Remove Go to Step [3].
2 Check after replacement of ROS ASSY End of Go to Step [11].
obstacles, or is it dirty? obstacles, and
clean ROS
10 Replace ROS ASSY. (p.375) procedure
window with Make a test print of the problem image.
CLEANER Is the image printed normally?
ASSY.
Check after replacement of MOT ASSY MAG End of Go to Step [12].
Check connection of ROS ASSY connector Go to Step [4]. Connect the
11 procedure
3 Is the connector firmly connected to ROS connector.
Replace MOT ASSY MAG. (p.396)
Make a test print of the problem image.
ASSY? Is the image printed normally?

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Step Check Yes No

Check of image primary transfer process Go to Step [13]. Replace LV/
12 Is the toner image on the drum transferred HVPS. (p.407)
normally to IBT BELT?
Execute a test print, turn the power OFF when
you think that the primary transfer process is
in progress during printing, and check the
toner image on IBT BELT.
Check of image secondary transfer process Go to Step [14]. Replace LV/
13 Is the toner image on IBT BELT transferred HVPS. (p.407)
normally to the paper?
Execute a test print, turn the power OFF when
you think that the image transfer process is in
progress during printing, and check the paper.
Check after replacement of ESS End of Replace “ESS
14 Replace ESS. procedure and possible
Make a test print of the problem image. parts that
caused the
Is the image printed normally?
error”.

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 EPSON AcuLaser C1100 Revision B

FIP-P3 Solid Black Print Step Check Yes No

Cover half of the window of ROS ASSY Go to Step [5]. Replace PWBA
† Problems 4 and execute a test print. MCU. (p.404)
Completely black pages are printed. Is the print, half white and half black?

† ESS and possible parts that caused the error Check after replacement of ROS ASSY End of Replace “ESS
5 Replace ROS ASSY. (p.375) procedure and possible
„ ROS ASSY Make a test print of the problem image. parts that caused
„ Photoconductor Unit Is the image printed normally?
the error”.
„ HOUSING ASSY-GUIDE AD
„ 2ND BTR ASSY
„ PWBA MCU
„ LV/HVPS
„ 500 FEEDER ASSY OPTION

Before starting troubleshooting, inspect the feed path of the printer paper. Check the
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter.

Step Check Yes No

Check connection of ROS ASSY connector Go to Step [2]. Connect the
1 Is the connector firmly connected to ROS connector.
ASSY?
Check of contact between Photoconductor Clean or replace Go to Step [3].
2 Unit and frame relevant parts.
Are the contacts of Photoconductor Unit and
HOUSING ASSY-GUIDE AD dirty or
deformed?
Cover the entire window of ROS ASSY and Replace LV/ Go to Step [4].
3 execute a test print. HVPS. (p.407)
Is the print completely black?

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 EPSON AcuLaser C1100 Revision B

FIP-P4 Vertical White Bands or Lines Step Check Yes No

Check of ROS window Clean the ROS Go to Step [5].
† Problems 4 Is ROS window dirty? window with
CLEANER
Vertical (along the paper feed direction) white
ASSY.
bands or lines appear almost all over the
printout. Some bands or lines are extremely Check of 2ND BTR ASSY Go to Step [6]. Replace 2ND
faint and some are completely white (blank)
5 Remove 2ND BTR ASSY. (p.348) BTR ASSY
missing the part of the image which should be Is 2ND BTR ASSY normal without any dirt, (p.348)
printed. damage or wear?

† ESS and possible parts that caused the error Check after replacement of End of Go to Step [7].
6 Photoconductor Unit procedure
„ ROS ASSY
Replace Photoconductor Unit.
„ Photoconductor Unit
Make a test print of the problem image.
„ 2ND BTR ASSY
Is the image printed normally?
„ FUSER ASSY
„ PWBA ESS 7 Check after replacement of ROS ASSY End of Go to Step [8].
procedure
„ PWBA MCU Replace ROS ASSY. (p.375)
„ LV/HVPS Make a test print of the problem image.
„ 500 FEEDER ASSY OPTION Is the image printed normally?
Check of Heat Roll and Pressure Roll Replace FUSER Replace “ESS
Before starting troubleshooting, inspect the feed path of the printer paper. Check the 8 W A R N IN G
Allow FUSER ASSY to cool down ASSY. (p.388) and possible
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter.
before performing work. parts that caused
the error”.
Step Check Yes No Remove FUSER ASSY. (p.388)
Check of Paper End of Go to Step [2]. Turn the Gear by hand, and inspect Heat Roll
1 Load new, dry recommended paper, and procedure and Pressure Roll.
execute a test print of the problem image. Are Heat Roll and Pressure Roll scratched or
Is the image printed normally? dirty and damaged?

Check of the paper feed path Remove Go to Step [3].

2 Are there any dirt or obstacles on the paper obstacles.
feed path from feeding section to the ejecting
section?
Check of laser beam path Remove Go to Step [4].
3 Are there any obstructions between ROS obstacles.
ASSY and Photoconductor Unit?

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 EPSON AcuLaser C1100 Revision B

FIP-P5 Horizontal White Bands or Lines Step Check Yes No

Connection check of ROS ASSY connector Go to Step [5]. Connect the
† Problems 4 Is the connector firmly connected to ROS connector.
Horizontal (vertical to the paper feed ASSY?
direction) white bands or lines appear almost Check of 2ND BTR ASSY Go to Step [6]. Replace 2ND
all over the printout. Some bands or lines are 5 Remove 2ND BTR ASSY. (p.348) BTR ASSY.
extremely faint and some are completely white Is 2ND BTR ASSY normal without any dirt, (p.348)
(blank) missing the part of the image which damage or wear?
should be printed.
Check after replacement of End of Go to Step [7].
† ESS and possible parts that caused the error 6 Photoconductor Unit procedure
„ ROS ASSY Replace Photoconductor Unit.
„ 2ND BTR ASSY Make a test print of the problem image.
„ Photoconductor Unit Is the image printed normally?
„ PWBA MCU Check after replacement of ROS ASSY End of Go to Step [8].
„ LV/HVPS 7 Replace ROS ASSY. (p.375) procedure
„ FUSER ASSY Make a test print of the problem image.
„ HOUSING ASSY-GUIDE AD Is the image printed normally?
„ PWBA ESS
Check after replacement of PWBA MCU End of Go to Step [9].
„ 500 FEEDER ASSY OPTION 8 Replace PWBA MCU. (p.404) procedure
Before starting troubleshooting, inspect the feed path of the printer paper. Check the Make a test print of the problem image.
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter. Is the image printed normally?
Check of image primary transfer process Go to Step [10]. Replace LV/
Step Check Yes No 9 Is the toner image on the drum transferred HVPS. (p.407)
Check of Paper End of Go to Step [2].
1 Load new, dry recommended paper, and procedure
normally to IBT BELT? Also, are there any
horizontal white bands?
execute a test print of the problem image.
Execute a test print, turn the power OFF when
Is the image printed normally? you think that the primary transfer process is
Check of Rollers on the paper feed path Go to Step [4]. After cleaning in progress during printing, and check the
2 Are Rollers on the paper feed path normal or replacing the toner image on IBT BELT.
without any dirt, damage or wear? relevant Rollers,
go to step [3].
Execution of a test print End of Go to Step [4].
3 Make a test print of the problem image. procedure
Is the image printed normally?

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No

Check of image secondary transfer process Go to Step [11]. Replace LV/
10 Is the toner image on IBT BELT transferred HVPS. (p.407)
normally to the paper?
Execute a test print, turn the power OFF when
you think that the image transfer process is in
progress during printing, and check the paper.
Check of Heat Roll and Pressure Roll Replace FUSER Replace “ESS
11 W A R N IN G
Allow FUSER ASSY to cool down ASSY. (p.388) and possible
before performing work. parts that caused
the error”.
Remove FUSER ASSY. (p.388)
Turn the Gear by hand, and inspect Heat Roll
and Pressure Roll.
Are Heat Roll and Pressure Roll scratched or
dirty and damaged?

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 EPSON AcuLaser C1100 Revision B

FIP-P6 Vertical Black Lines Step Check Yes No

Check after replacement of ROS ASSY End of Go to Step [6].
† Problems 5 Replace ROS ASSY. (p.375) procedure
Vertical (along the paper feed direction) black Make a test print of the problem image.
lines appear on printout. Is the image printed normally?

† ESS and possible parts that caused the error Check after replacement of PWBA MCU End of Go to Step [7].
6 Replace PWBA MCU. (p.404) procedure
„ 2ND BTR ASSY
Make a test print of the problem image.
„ Photoconductor Unit
Is the image printed normally?
„ ROS ASSY
„ PWBA MCU Check of Heat Roll and Pressure Roll Replace FUSER Replace “ESS
„ FUSER ASSY
7 W A R N IN G
Allow FUSER ASSY to cool down ASSY. (p.388) and possible
parts that caused
„ HOUSING ASSY-GUIDE AD before performing work.
the error”.
„ PWBA ESS Remove FUSER ASSY. (p.388)
„ 500 FEEDER ASSY OPTION Turn the Gear by hand, and inspect Heat Roll
and Pressure Roll.
Before starting troubleshooting, inspect the feed path of the printer paper. Check the Are Heat Roll and Pressure Roll scratched or
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter. dirty and damaged?
Step Check Yes No
Check of Rollers on the paper feed path Go to Step [3]. After cleaning
1 Are Rollers on the paper feed path normal or replacing the
without any dirt, damage or wear? relevant Rollers,
go to step [2].
Execution of a test print End of Go to Step [3].
2 Make a test print of the problem image. procedure
Is the image printed normally?
Check of 2ND BTR ASSY Go to Step [4]. Replace 2ND
3 Remove 2ND BTR ASSY. (p.348) BTR ASSY
Is 2ND BTR ASSY normal without any dirt, (p.348)
damage or wear?
Check after replacement of End of Go to Step [5].
4 Photoconductor Unit procedure
Replace Photoconductor Unit.
Make a test print of the problem image.
Is the image printed normally?

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 EPSON AcuLaser C1100 Revision B

FIP-P7 Horizontal Black Lines Step Check Yes No

Check after replacement of End of Go to Step [5].
† Problems 4 Photoconductor Unit procedure
Horizontal (vertical to the paper feed Replace Photoconductor Unit.
direction) black lines appear on printout. Make a test print of the problem image.
Is the image printed normally?
† ESS and possible parts that caused the error
Check after replacement of ROS ASSY End of Go to Step [6].
„ ROS ASSY 5 Replace ROS ASSY. (p.375) procedure
„ 2ND BTR ASSY
Make a test print of the problem image.
„ Photoconductor Unit
Is the image printed normally?
„ LV/HVPS
„ FUSER ASSY 6 Check of image primary transfer process Go to Step [7]. Replace LV/
HVPS. (p.407)
„ HOUSING ASSY-GUIDE AD Is the toner image on the drum transferred
normally to IBT BELT?
„ PWBA MCU
Execute a test print, turn the power OFF when
„ PWBA ESS
you think that the primary transfer process is
„ 500 FEEDER ASSY OPTION in progress during printing, and check the
Before starting troubleshooting, inspect the feed path of the printer paper. Check the toner image on IBT BELT.
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter. Check of image secondary transfer process Go to Step [8]. Replace LV/
7 Is the toner image on IBT BELT transferred HVPS. (p.407)
Step Check Yes No normally to the paper?
Connection check of ROS ASSY connector Go to Step [2]. Connect the
1 Is the connector firmly connected to ROS connector.
Execute a test print, turn the power OFF when
you think that the image transfer process is in
ASSY? progress during printing, and check the paper.
Check of Heat Roll and Pressure Roll Replace FUSER Replace “ESS
2 Check of contact between Photoconductor
Unit and frame
Clean or replace
relevant parts.
Go to step [3]
8 W A R N IN G
Allow FUSER ASSY to cool down ASSY. (p.388) and possible
Are the contacts of Photoconductor Unit and before performing work. parts that caused
HOUSING ASSY-GUIDE AD dirty or the error”.
Remove FUSER ASSY. (p.388)
deformed?
Turn the Gear by hand, and inspect Heat Roll
Check of 2ND BTR ASSY Go to Step [4]. Replace 2ND and Pressure Roll.
3 Remove 2ND BTR ASSY. (p.348) BTR ASSY Are Heat Roll and Pressure Roll scratched or
Is 2ND BTR ASSY normal without any dirt, (p.348) dirty and damaged?
damage or wear?

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 EPSON AcuLaser C1100 Revision B

FIP-P8 Image is Partially Not Printed Step Check Yes No

Check of image primary transfer process Go to Step [5]. Replace LV/
† Problems 4 Is the toner image on the drum transferred HVPS. (p.407)
Some areas of the printed image are missing or normally to IBT BELT?
extremely faint. Execute a test print, turn the power OFF when
you think that the primary transfer process is
† ESS and possible parts that caused the error in progress during printing, and check the
„ 2ND BTR ASSY toner image on IBT BELT.
„ Photoconductor Unit Check of image secondary transfer process Go to Step [6]. Replace LV/
„ LV/HVPS
5 Is the toner image on IBT BELT transferred HVPS. (p.407)
„ FUSER ASSY normally to the paper?
„ PWBA MCU Execute a test print, turn the power OFF when
„ ROS ASSY you think that the image transfer process is in
progress during printing, and check the paper.
„ PWBA ESS
„ 500 FEEDER ASSY OPTION 6 Check of Heat Roll and Pressure Roll Replace FUSER Go to Step [7].
W A R N IN G
Allow FUSER ASSY to cool down ASSY. (p.388)
before performing work.
Before starting troubleshooting, inspect the feed path of the printer paper. Check the
Remove FUSER ASSY. (p.388)
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter.
Turn the Gear by hand, and inspect Heat Roll
Step Check Yes No and Pressure Roll.
Are Heat Roll and Pressure Roll scratched or
Check of Paper End of Go to Step [2].
1 Load new, dry recommended paper, and procedure
dirty and damaged?
Check after replacement of PWBA MCU End of Replace “ESS
execute a test print.
Is the image printed normally?
7 Replace PWBA MCU. (p.404) procedure and possible
Make a test print of the problem image. parts that caused
Check of 2ND BTR ASSY Go to Step [3]. Replace 2ND the error”.
2 Remove 2ND BTR ASSY. (p.348) BTR ASSY Is the image printed normally?

Is 2ND BTR ASSY normal without any dirt, (p.348)

damage or wear?
Check after replacement of End of Go to Step [4].
3 Photoconductor Unit procedure
Replace Photoconductor Unit.
Make a test print of the problem image.
Is the image printed normally?

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 EPSON AcuLaser C1100 Revision B

FIP-P9 Toner Smudges Step Check Yes No

Check after replacement of End of Go to Step [6].
† Problems 5 Photoconductor Unit procedure
Toner smudges appear randomly over the Replace Photoconductor Unit.
entire surface of the paper. Make a test print of the problem image.
Is the image printed normally?
† ESS and possible parts that caused the error
Check after replacement of PWBA MCU End of Go to Step [7].
„ ROS ASSY 6 Replace PWBA MCU. (p.404) procedure
„ Photoconductor Unit
Make a test print of the problem image.
„ HOUSING ASSY-GUIDE AD
Is the image printed normally?
„ 2ND BTR ASSY
„ PWBA MCU 7 Check after replacement of LV/HVPS End of Go to Step [8].
procedure
„ LV/HVPS Replace LV/HVPS. (p.407)
„ FUSER ASSY Make a test print of the problem image.
„ PWBA ESS Is the image printed normally?
„ 500 FEEDER ASSY OPTION Check of Heat Roll and Pressure Roll Replace FUSER Replace “ESS
8 W A R N IN G
Allow FUSER ASSY to cool down ASSY. (p.388) and possible
Before starting troubleshooting, inspect the feed path of the printer paper. Check the parts that caused
before performing work.
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter. the error”.
Remove FUSER ASSY. (p.388)
Step Check Yes No Turn the Gear by hand, and inspect Heat Roll
Check of Rollers on the paper feed path Go to Step [2]. After cleaning and Pressure Roll.
1 Are Rollers on the paper feed path normal and replacing Are Heat Roll and Pressure Roll scratched or
without any dirt, damage or wear? the relevant dirty and damaged?
Rollers, go to
step [2].
Connection check of ROS ASSY connector Go to Step [3]. Connect the
2 Is the connector firmly connected to ROS connector.
ASSY?
Check of contact between Photoconductor Clean or Go to Step [4].
3 Unit and frame replace
Are the contacts of Photoconductor Unit and relevant parts.
HOUSING ASSY-GUIDE AD dirty or
deformed?
Check of 2ND BTR ASSY Go to Step [5]. Replace 2ND
4 Remove 2ND BTR ASSY. (p.348) BTR ASSY.
Is 2ND BTR ASSY normal without any dirt, (p.348)
damage or wear?

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 EPSON AcuLaser C1100 Revision B

FIP-P10 Residual Image Step Check Yes No

Check of contact between Photoconductor Clean or replace Go to Step [4].
† Problems 3 Unit and frame relevant parts.$
A ghost image appears on the printout. An Are the contacts of Photoconductor Unit and
image of the previous page or part of the HOUSING ASSY-GUIDE AD dirty or
deformed?
currently printing page lap over like a ghost.
Check after replacement of End of Go to Step [5].
† ESS and possible parts that caused the error 4 Photoconductor Unit procedure
„ Photoconductor Unit Replace Photoconductor Unit.
„ HOUSING ASSY- GUIDE AD Make a test print of the problem image.
„ 2ND BTR ASSY Is the image printed normally?
„ FUSER ASSY Check of 2ND BTR ASSY Go to Step [6]. Replace 2ND
„ ROS ASSY 5 Remove 2ND BTR ASSY. (p.348) BTR ASSY.
„ MOT ASSY MAG Is 2ND BTR ASSY normal without any dirt, (p.348)
„ PWBA ESS damage or wear?
„ PWBA MCU
Check of Heat Roll and Pressure Roll Replace FUSER Replace “ESS
„ LV/HVPS 6 W A R N IN G
Allow FUSER ASSY to cool down ASSY. (p.388) and possible
„ 500 FEEDER ASSY OPTION parts that caused
before performing work.
the error”.
Before starting troubleshooting, inspect the feed path of the printer paper. Check the Remove FUSER ASSY. (p.388)
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter. Turn the Gear by hand, and inspect Heat Roll
and Pressure Roll.
Step Check Yes No
Are Heat Roll and Pressure Roll scratched or
Check of repeated printing Go to Step [2]. Go to Step [3]. dirty and damaged?
1 Check the residual image
Is the customer printing lots of the same
images?
Check of the residual image. Go to Step [3]. End of
2 Print out 30 pages of various images. procedure
Did any residual images appear? (Advise the
customer not to
print same
image in large
quantities at a
time.)

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 EPSON AcuLaser C1100 Revision B

FIP-P11 Dark or Dirty Background Step Check Yes No

Check of dirt and foreign bodies on surface Clean to remove Go to Step [6].
† Problems 4 of SENSOR ASSY ADC any dirt or
Are there any dirt or foreign bodies on the foreign bodies,
The entire page or part of the page is dirtied
SENSOR ASSY ADC surface? and go to step
with toner. It appears as extremely light gray [5].
dirt.
Execution of a test print End of Go to Step [6].
† ESS and possible parts that caused the error 5 Make a test print of the problem image. procedure
„ ROS ASSY Is the image printed normally?
„ Photoconductor Unit Check after replacement of SENSOR ASSY End of Go to Step [7].
„ SENSOR ASSY ADC 6 ADC procedure
„ LV/HVPS Replace SENSOR ASSY ADC. (p.353)
„ HOUSING ASSY-GUIDE AD Make a test print of the problem image.
„ 2ND BTR ASSY Is the image printed normally?
„ PWBA MCU
Check after replacement of LV/HVPS End of Replace “ESS
„ FUSER ASSY 7 Replace LV/HVPS. (p.407) procedure and possible
„ PWBA ESS parts that caused
Make a test print of the problem image.
„ 500 FEEDER ASSY OPTION the error”.
Is the image printed normally?
Before starting troubleshooting, inspect the feed path of the printer paper. Check the
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter.

Step Check Yes No

Connection check of ROS ASSY connector Go to Step [2]. Connect the
1 Is the connector firmly connected to ROS connector.
ASSY?
Check of contact between Photoconductor Clean or replace Go to Step [3].
2 Unit and frame relevant parts.
Are the contacts of Photoconductor Unit and
HOUSING ASSY-GUIDE AD dirty or
deformed?
Check after replacement of End of Go to Step [4].
3 Photoconductor Unit procedure
Replace Photoconductor Unit.
Make a test print of the problem image.
Is the image printed normally?

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 EPSON AcuLaser C1100 Revision B

FIP-P12 Skew Print Step Check Yes No

Check the Rollers on the paper feed path for Go to Step [5]. Clean and re-
† Problems 4 damage and wear, and check attachment. attach, or
Are Rollers on the paper feed path normal replace the
The printed image is not parallel to both sides
without any dirt, damage or wear? Roller in
of the paper. question, and go
Also, are those Rollers attached correctly?
† ESS and possible parts that caused the error to Step [5].

„ 500 PAPER CASSETTE ASSY 5 Check of Photoconductor Unit attachment Go to Step [6]. Re-attach, and
„ PLATE ASSY BOTTOM 500 Is Photoconductor Unit attached correctly? go to step [6].
„ Photoconductor Unit Execution of a test print End of Go to Step [7].
„ 2ND BTR ASSY 6 Make a test print of the problem image. procedure
„ FUSER ASSY Is the image printed normally?
„ PWBA ESS
Check after replacement of End of Replace “ESS
„ 500 FEEDER ASSY OPTION 7 Photoconductor Unit procedure and possible
Replace Photoconductor Unit. parts that caused
Before starting troubleshooting, inspect the feed path of the printer paper. Check the Make a test print of the problem image. the error”.
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter. Is the image printed normally?

Step Check Yes No

Check of printer installation surface Go to Step [2]. Correct the
1 Is the printer installed on level surface? inappropriate
Also, are the printer's feet attached correctly? installation.

Check of paper feed End of Go to Step [3].

2 Remove the Paper Cassette, and load paper procedure
correctly.
Attach the Paper Cassette correctly into the
printer.
Make a test print of the problem image.
Is the image printed normally?
Operation check of PLATE ASSY Go to Step [4]. Re-attach
3 BOTTOM 500 in the Paper Cassette PLATE ASSY
Remove the Paper Cassette. BOTTOM.
Does the PLATE ASSY BOTTOM 500 in the (p.448)
Paper Cassette rise up correctly without any
inclination on the left or right sides?

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 EPSON AcuLaser C1100 Revision B

FIP-P13 Print Paper Damage Step Check Yes No

Attachment check of FUSER ASSY Go to Step [5]. Re-attach.
† Problems 4 Is FUSER ASSY attached correctly?
Is the printed out paper wrinkled, folded or Check after replacement of FUSER ASSY End of Replace “ESS
frayed? 5 W A R N IN G
Allow FUSER ASSY to cool down procedure and possible
parts that caused
† ESS and possible parts that caused the error before performing work.
the error”.
Replace FUSER ASSY. (p.388)
„ FUSER ASSY
Make a test print of the problem image.
„ 2ND BTR ASSY
Is the image printed normally?
„ ROS ASSY
„ Photoconductor Unit
„ PWBA ESS
„ 500 PAPER CASSETTE ASSY
„ PLATE ASSY BOTTOM 500
„ 500 FEEDER ASSY OPTION
Before starting troubleshooting, inspect the feed path of the printer paper. Check the
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter.

Step Check Yes No

Check of Paper End of Go to Step [2].
1 Load new, dry recommended paper, and procedure
execute a test print.
Is the image printed normally?
Check of paper feed path Remove dirt Go to Step [3].
2 Are there any dirt or obstacles on the paper and obstacles.
feed path from the paper feed tray to the
output section?
Check of all Rollers on the paper feed path Go to Step [4]. Clean the
3 Are all Rollers on the paper feed path normal relevant Rollers.
without any dirt, damage or wear?

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 EPSON AcuLaser C1100 Revision B

FIP-P14 Image Not Fixed Step Check Yes No

Check after replacement of FUSER ASSY End of Go to Step [5].
† Problems 4 W A R N IN G
Allow FUSER ASSY to cool down procedure
The printed image is not sufficiently fixed to before performing work.
the paper. The image is easily removed by Replace FUSER ASSY. (p.388)
rubbing it with your fingers. Make a test print of the problem image.
† ESS and possible parts that caused the error Is the image printed normally?

„ FUSER ASSY Check after replacement of PWBA MCU End of Replace “ESS
5 Replace PWBA MCU. (p.404) procedure and possible
„ PWBA ESS parts that caused
„ PWBA MCU Make a test print of the problem image.
the error”.
Is the image printed normally?

Before starting troubleshooting, inspect the feed path of the printer paper. Check the
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter.

Step Check Yes No

Check of Paper End of Go to Step [2].
1 Load new, dry recommended paper, and procedure
execute a test print.
Is the image printed normally?
Check of print setup mode Go to Step [3]. Adjust the
2 Is the printer set to a Transfer Voltage suited Transfer
to the type of paper in use? Voltage.

Check of Heat Roll and Pressure Roll Replace FUSER Go to Step [4].
3 W A R N IN G
Allow FUSER ASSY to cool down ASSY. (p.388)
before performing work.
Remove FUSER ASSY. (p.388)
Turn the Gear by hand, and inspect Heat Roll
and Pressure Roll.
Are Heat Roll and Pressure Roll scratched or
dirty and damaged?

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 EPSON AcuLaser C1100 Revision B

FIP-P15 Color Shift

† Problems
The printed Yellow or Black image does not
accurately overlap the Cyan or Magenta
image, and is out of position.
† ESS and possible parts that caused the error
„ SENSOR TR-0
„ Photoconductor Unit
„ MOT ASSY P/R
„ PWBA ESS

Before starting troubleshooting, inspect the feed path of the printer paper. Check the
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter.

Step Check Yes No

Check of SENSOR TR-0 attachment Go to Step [2]. Re-attach, and
1 Is SENSOR TR-0 attached correctly? go to step [3].

Check after replacement of End of Go to Step [3].

2 Photoconductor Unit procedure
Replace Photoconductor Unit.
Is the image printed normally?
Check after replacement of MOT ASSY P/R End of Go to Step [4].
3 Replace MOT ASSY P/R. (p.398) procedure
Is the image printed normally?
Check after replacement of PWBA ESS End of Replace “ESS
4 Replace PWBA ESS. (p.409) procedure and possible
Is the image printed normally? parts that caused
the error”.

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 EPSON AcuLaser C1100 Revision B

FIP-P16 Uneven Density/Thin-Spot † Connecting location of the connectors

† Problems
Uneven density/thin-spots appear on entire
surface. This occurs due to disconnection of
connector (P/J504) from LV/HVPS.
P/J504
† ESS and possible parts that caused the error
„ WIRE ASSY BTR
„ LV/HVPS

P/J512
(1BTR)

Before starting troubleshooting, inspect the feed path of the printer paper. Check the
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter.

Step Check Yes No

Check the connectors for LV/HVPS. End of Replace “ESS
1 Make sure that the connector (P/J504) on LV/ procedure and possible
HVPS and the connector (P/J512) on 1st BTR parts that caused
are connected properly. the error”.
Print the problem image. Or, execute the test
print.
Was the trouble fixed?

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 EPSON AcuLaser C1100 Revision B

FIP-P17 Entirely Faint † Connecting location of the connectors

† Problems
The color over the entire surface is faint. This
occurs due to disconnection of connector (P/
J509) from LV/HVPS.
P/J509
† ESS and possible parts that caused the error
„ WIRE ASSY DEVE
„ LV/HVPS

P/J510
(DEVE)

Before starting troubleshooting, inspect the feed path of the printer paper. Check the
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter.

Step Check Yes No

Check the connectors for LV/HVPS. End of Replace “ESS
1 Make sure that the connector (P/J509) on LV/ procedure and possible
HVPS and the connector (P/J510) on DEVE parts that caused
are connected properly. the error”.
Print the problem image. Or, execute the test
print.
Was the trouble fixed?

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 EPSON AcuLaser C1100 Revision B

FIP-P18 Entirely Fogged in Black † Connecting location of the connectors

† Problems
All of the four colors are printed all over the
page resulting in completely black printout.
This occurs due to disconnection of connector
(P/J508) from LV/HVPS. P/J508

† ESS and possible parts that caused the error

„ WIRE ASSY BCR
„ LV/HVPS

P/J514
(BCR)

Before starting troubleshooting, inspect the feed path of the printer paper. Check the
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter.

Step Check Yes No

Check the connectors for LV/HVPS. End of Replace “ESS
1 Make sure that the connector (P/J508) on LV/ procedure and possible
HVPS and connector (P/J514) on BCR are parts that caused
connected properly. the error”.
Print the problem image. Or, execute the test
print.
Was the trouble fixed?

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 EPSON AcuLaser C1100 Revision B

FIP-P19 Entirely Thin † Connecting location of the connectors

T2
† Problems (2BTR)
Strong faintness occurs on entire surface. This
occurs due to disconnection of connector
(P/J505) from PWBA HVPS.
† ESS and possible parts that caused the error
„ WIRE ASSY 2BTR
„ PWBA HVPS

Before starting troubleshooting, inspect the feed path of the printer paper. Check the
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter.

Step Check Yes No

Check connector of PWBA HVPS. End of Replace “ESS
1 Check connection of connector (P/J505) of procedure and possible
PWBA. Also, make sure that 2ND BTR parts that caused
ASSY that contacts with T2 shown in the the error”.
figure left is correctly attached. P/J505
Print the problem image. Or, execute the test
print.
Was the trouble fixed?

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 EPSON AcuLaser C1100 Revision B

FIP-P20 Uneven Density in Horizontal Direction † Connecting location of the connectors

† Problems
Uneven density in the horizontal direction in
high-density color areas (color is faint in a
stripe pattern) is occurring. This occurs due to
disconnection of connector (P/J506) from
PWBA HVPS.
† ESS and possible parts that caused the error P/J513
(IBT)
„ WIRE ASSY IBT
„ PWBA HVPS

Before starting troubleshooting, inspect the feed path of the printer paper. Check the
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter.

Step Check Yes No

Check the connectors for PWBA HVPS. End of Replace “ESS
1 Make sure that the connector (P/J506) on procedure and possible P/J506
PWBA and the connector (P/J513) on IBT are parts that caused
connected properly. the error”.
Print the problem image. Or, execute the test
print.
Was the trouble fixed?

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 EPSON AcuLaser C1100 Revision B

3.5 Abnormal Noise-related Trouble

3.5.1 Abnormal noise-related troubleshooting entry chart

Check the operation table at power ON, and

Can you hear abnormal noise during
check for abnormal noise and damage.
initialization after power ON? (See “FIP-1 N1”)
Y
N

Can you hear abnormal noise in Check the operation table in the Standby mode,
and check for abnormal noise and damage.
the Standby mode? (See “FIP-1 N2”)
Y
N

Check the operation table during printing

Can you hear abnormal noise during (one-side), and check for abnormal noise and
printing (one-side)? Y damage. (See “FIP-1 N3”)

Check the operation table during printing

Can you hear abnormal noise during
(both-side), and check for abnormal noise and
printing (both-side)? Y damage. (See “FIP-1 N3”)

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 EPSON AcuLaser C1100 Revision B

3.5.2 Abnormal Noise-related FIP Step Check Yes No

Is abnormal noise being generated from Clean or replace Go to Step [9].
FIP-N1 At Power On 8 ROLL ASSY-PRE REGI in FRAME ROLL ASSY-
ASSY-PH that is driven by MOTOR-PH? PRE REGI.
† Possible parts that caused the error
Is abnormal noise being generated from Clean or replace Go to Step [10].
„ MOT ASSY ROT „ FRAME ASSY-ROTARY
9 ROLL REGI RUBBER in FRAME ASSY- ROLL ASSY-
PH that is driven by MOTOR-PH? REGI.
„ MOT ASSY MICRO „ 2ND BTR ASSY
Is abnormal noise being generated from Clean or replace
„ Photoconductor Unit „ MOT ASSY P/R 10 ROLL MSI that is driven by MOTOR-PH? ROLL MSI.
„ FRAME ASSY-PH „ ROLL MSI

† Troubleshooting

Step Check Yes No

Is abnormal noise being generated by MOT Replace MOT Go to Step [2].
1 ASSY ROT? ASSY ROT.

Is abnormal noise being generated by Clean or replace Go to Step [3].

2 FRAME ASSY-ROTARY that is driven by FRAME ASSY-
MOT ASSY ROT? ROTARY.
Is abnormal noise being generated by MOT Replace MOT Go to Step [4].
3 ASSY MICRO? ASSY MICRO.

Is abnormal noise being generated by 2ND Clean or replace Go to Step [5].

4 BTR ASSY that is driven by MOT ASSY 2ND BTR
MICRO? ASSY.
Is abnormal noise being generated by MOT Replace MOT Go to Step [6].
5 ASSY P/R? ASSY P/R.

Is abnormal noise being generated from Replace Go to Step [7].

6 inside Photoconductor Unit? Photoconductor
Unit.
Is abnormal noise being generated by Replace FRAME Go to Step [8].
7 MOTOR-PH inside FRAME ASSY-PH? ASSY-PH.

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 EPSON AcuLaser C1100 Revision B

FIP-N2 At Standby

† Possible parts that caused the error

„ MOT ASY FSR „ FUSER ASSY

„ 2ND BTR ASSY

† Troubleshooting

Step Check Yes No

Is abnormal noise being generated from Replace MOT Go to Step [2].
1 MOT ASSY FSR? ASSY FSR.
(It rotates when the temperature of FUSER
ASSY reaches the specified value)
Is abnormal noise being generated by Clean or replace Go to Step [3].
2 FUSER ROLL in FUSER ASSY that is FUSER ROLL.
driven by MOT ASSY FSR?
Is abnormal noise being generated from Clean or replace
3 2ND BTR ASSY that is driven by MOT 2ND BTR
ASSY FSR? ASSY.

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 EPSON AcuLaser C1100 Revision B

FIP-N3 At Printing (One Side) Step Check Yes No

Is abnormal noise being generated from Clean or replace Go to Step [8].
† Possible parts that caused the error 7 ROLL MSI that is driven by MOTOR-PH? ROLL MSI.
„ 500 FEEDER ASSY OPTION „ FRAME ASSY-PH
„ „ Is abnormal noise being generated from Replace Go to Step [9].
ROLL MSI MOT ASY FSR 8 GEAR ASSY DRIVE that is driven by FRAME ASSY-
„ FUSER ASSY „ 2ND BTR ASSY MOTOR-PH? PH.
„ MOT ASSY P/R „ Photoconductor Unit
Is abnormal noise being generated from Replace MOT Go to Step [10].
„ MOT ASSY MAG „ HOUSING ASSY-DEVE K 9 MOT ASSY FSR? ASSY FSR.
„ HOUSING ASSY-DEVE Y „ HOUSING ASSY-DEVE M
„ HOUSING ASSY-DEVE C „ MOT ASSY ROT Is abnormal noise being generated by Replace FUSER Go to Step [11].
„ FRAME ASSY-ROTARY „ MOT ASSY MICRO 10 FUSER ROLL in FUSER ASSY that is ASSY.
„ FRAME ASSY-2ND „ ROS ASSY driven by MOT ASSY FSR?
Is abnormal noise being generated from Clean or replace Go to Step [12].
† Troubleshooting 11 2ND BTR ASSY that is driven by MOT 2ND BTR
ASSY FSR? ASSY.
Step Check Yes No
Is abnormal noise being generated by EXIT Clean or replace Go to Step [13].
1 Is abnormal noise being generated from Replace 500 Go to Step [2]. 12 ROLL in FUSER ASSY that is driven by FUSER ASSY.
DRIVE ASSY FEED in 500 FEEDER FEEDER ASSY MOT ASSY FSR?
ASSY OPTION? OPTION.
Is abnormal noise being generated by MOT Replace MOT Go to Step [14].
Is abnormal noise being generated from Clean or replace Go to Step [3]. 13
2 ROLL ASSY TURN 500 that is driven by ROLL ASSY
ASSY P/R? ASSY P/R.

DRIVE ASSY FEED in 500 FEEDER TURN 500.

Is abnormal noise being generated from Replace Go to Step [15].
ASSY OPTION? 14 inside Photoconductor Unit? Photoconductor
Is abnormal noise being generated from Clean or replace Go to Step [4].
3 ROLL ASSY FEED 500 that is driven by ROLL ASSY
Unit.
Is abnormal noise being generated by MOT Replace MOT Go to Step [16].
DRIVE ASSY FEED in 500 FEEDER
ASSY OPTION?
FEED 500. 15 ASSY MAG? ASSY MAG.

Is abnormal noise being generated by Replace Go to Step [5].

4 MOTOR-PH inside FRAME ASSY-PH? FRAME ASSY- 16 Is abnormal noise being generated from Replace Go to Step [17].
PH. HOUSING ASSY-DEVE K, HOUSING HOUSING
ASSY-DEVE Y, HOUSING ASSY-DEVE ASSY-DEVE K,
Is abnormal noise being generated from Clean or replace Go to Step [6].
5 ROLL ASSY-PRE REGI in FRAME ROLL ASSY-
M, or HOUSING ASSY-DEVE C that are
driven by MOT ASSY MAG?
HOUSING
ASSY-DEVE Y,
ASSY-PH that is driven by MOTOR-PH? PRE REGI. HOUSING
Is abnormal noise being generated from Clean or replace Go to Step [7]. ASSY-DEVE M,
6 ROLL REGI RUBBER in FRAME ASSY- ROLL REGI or HOUSING
PH that is driven by MOTOR-PH? RUBBER. ASSY-DEVE C.

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 EPSON AcuLaser C1100 Revision B

Step Check Yes No

Is abnormal noise being generated by MOT Replace MOT Go to Step [18].
17 ASSY ROT? ASSY ROT.

Is abnormal noise being generated by Replace Go to Step [19].

18 FRAME ASSY-ROTARY that is driven by FRAME ASSY-
MOT ASSY ROT? ROTARY.
Is abnormal noise being generated by MOT Replace MOT Go to Step [20].
19 ASSY MICRO? ASSY MICRO.

Is abnormal noise being generated by Replace Go to Step [21].

20 FRAME ASSY-2ND that is driven by MOT FRAME ASSY-
ASSY MICRO? 2ND.
Is abnormal noise being generated by ROS Replace ROS
21 ASSY? ASSY.

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 EPSON AcuLaser C1100 Revision B

FIP-N4 At Printing (Both Sides) Step Check Yes No

Is abnormal noise being generated from Clean or replace Go to Step [7].
† Possible parts that caused the error 6 ROLL REGI RUBBER in FRAME ASSY- ROLL REGI
PH that is driven by MOTOR-PH? RUBBER.
„ 500 FEEDER ASSY OPTION „ FRAME ASSY-PH
„ „ Is abnormal noise being generated from Clean or replace Go to Step [8].
ROLL MSI MOT ASY FSR 7 ROLL MSI that is driven by MOTOR-PH? ROLL MSI.
„ FUSER ASSY „ 2ND BTR ASSY
„ MOT ASSY P/R „ Photoconductor Unit
Is abnormal noise being generated from Replace Go to Step [9].
„ MOT ASSY MAG „ HOUSING ASSY-DEVE K 8 GEAR ASSY DRIVE that is driven by FRAME ASSY-
„ HOUSING ASSY-DEVE Y „ HOUSING ASSY-DEVE M MOTOR-PH? PH.
„ HOUSING ASSY-DEVE C „ MOT ASSY ROT Is abnormal noise being generated from Replace MOT Go to Step [10].
„ FRAME ASSY-ROTARY „ MOT ASSY MICRO 9 MOT ASSY FSR? ASSY FSR.
„ FRAME ASSY-2ND „ DUPLEX ASSY
„ ROS ASSY Is abnormal noise being generated by Replace FUSER Go to Step [11].
10 FUSER ROLL in FUSER ASSY that is ASSY.
† Troubleshooting driven by MOT ASSY FSR?
Is abnormal noise being generated from Clean or replace Go to Step [12].
Step Check Yes No 11 2ND BTR ASSY that is driven by MOT 2ND BTR
Is abnormal noise being generated from Replace 500 Go to Step [2]. ASSY FSR? ASSY.
1 DRIVE ASSY FEED in 500 FEEDER FEEDER ASSY
Is abnormal noise being generated by EXIT Clean or replace Go to Step [13].
ASSY OPTION? OPTION. 12 ROLL in FUSER ASSY that is driven by FUSER ASSY.
Is abnormal noise being generated from Clean or replace Go to Step [3]. MOT ASSY FSR?
2 ROLL ASSY TURN 500 that is driven by ROLL ASSY
Is abnormal noise being generated by MOT Replace MOT Go to Step [14].
DRIVE ASSY FEED in 500 FEEDER TURN 500. 13 ASSY P/R? ASSY P/R.
ASSY OPTION?
Is abnormal noise being generated from Clean or replace Go to Step [4].
3 ROLL ASSY FEED 500 that is driven by ROLL ASSY 14 Is abnormal noise being generated from Replace Go to Step [15].
inside Photoconductor Unit? Photoconductor
DRIVE ASSY FEED in 500 FEEDER FEED 500.
Unit.
ASSY OPTION?
Is abnormal noise being generated by MOT Replace MOT Go to Step [16].
4 Is abnormal noise being generated by Replace Go to Step [5]. 15 ASSY MAG? ASSY MAG.
MOTOR-PH inside FRAME ASSY-PH? FRAME ASSY-
PH.
Is abnormal noise being generated from Clean or replace Go to Step [6].
5 ROLL ASSY-PRE REGI in FRAME ROLL ASSY-
ASSY-PH that is driven by MOTOR-PH? PRE REGI.

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Step Check Yes No Step Check Yes No

Is abnormal noise being generated from Replace Go to Step [17]. Is abnormal noise being generated from Clean or replace Go to Step [26].
16 HOUSING ASSY-DEVE K, HOUSING HOUSING 25 ROLLER ASSY DUP OUT that is driven ROLLER
ASSY-DEVE Y, HOUSING ASSY-DEVE ASSY-DEVE K, by MOTOR ASSY DUP in DUPLEX ASSY DUP
M, or HOUSING ASSY-DEVE C that are HOUSING OPTION? OUT.
driven by MOT ASSY MAG? ASSY-DEVE Y,
Is abnormal noise being generated by ROS Replace ROS
HOUSING 26 ASSY? ASSY.
ASSY-DEVE M,
or HOUSING
ASSY-DEVE C.
Is abnormal noise being generated by MOT Replace MOT Go to Step [18].
17 ASSY ROT? ASSY ROT.

Is abnormal noise being generated by Replace Go to Step [19].

18 FRAME ASSY-ROTARY that is driven by FRAME ASSY-
MOT ASSY ROT? ROTARY.
Is abnormal noise being generated by MOT Replace MOT Go to Step [20].
19 ASSY MICRO? ASSY MICRO.

Is abnormal noise being generated by Replace Go to Step [21].

20 FRAME ASSY-2ND that is driven by MOT FRAME ASSY-
ASSY MICRO? 2ND.
Is abnormal noise being generated from Replace Go to Step [22].
21 MOTOR ASSY DUP INV in DUPLEX DUPLEX
OPTION? OPTION.
Is abnormal noise being generated from Clean or replace Go to Step [23].
22 ROLLER ASSY INVERTER that is driven ROLLER
by MOTOR ASSY DUP INV in DUPLEX ASSY
OPTION? INVERTER.
Is abnormal noise being generated from Replace Go to Step [24].
23 MOTOR ASSY DUP in DUPLEX DUPLEX
OPTION? OPTION.
Is abnormal noise being generated from Clean or replace Go to Step [25].
24 ROLLER ASSY DUP that is driven by ROLLER
MOTOR ASSY DUP in DUPLEX ASSY DUP.
OPTION?

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3.6 Test Print

3.6.1 Overview PWBA MCU

To check the IOT operation, it is possible to print PWBA MCU built-in sample
continuously without being routed through the controller. If the problem does
not occur on the PWBA MCU built-in sample, the cause of the problem may be
controller.

3.6.2 Printing Procedure of Test Print Pattern

1. Remove the COVER ASSY LH. (p.295)

W A R N IN G Never touch the energized or driving part when performing the

following procedure.

2. Set paper into MSI and turn the power on.

3. In Ready mode, short-circuit the pad for test print on the PWBA MCU with
a small screwdriver or a similar tool. The pad is located at upper right of
the interface connector (P411).

W A R N IN G When short-circuiting the pad, be careful not to contact the other

elements by hand or tool.

C A U T IO N „ 1 sheet of test print is printed out by 1 time of short-circuiting.

„ It cannot be printed when the engine is in error status.
„ As for Ready mode, refer to “2.7 Operating Modes” (p.109)

Leg_Sec002_003EB
Figure 3-5. Printing Test print Pattern

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400 dot line 1 dot line

(400dpi)
127 dot

508 dot
(400dpi)
Figure 3-6. Test Print Pattern

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 CHAPTER

4
DISASSEMBLY AND ASSEMBLY

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4.1 Overview 4.1.1 Precautions

The precautions below (WARNING and CAUTION), must always be followed during
This section describes procedures for disassembling the main components of the
disassembly and assembly.
product. Unless otherwise specified, disassembled units or components can be
reassembled by reversing the disassembly procedure.
W A R N IN G „ Disconnect the power cable before disassembling or
Procedures which, if not strictly observed, could result in personal injury are described assembling the printer. If you need to work on the printer
under the heading “WARNING”. with power applied, strictly follow the instructions in this
manual.
“CAUTION” signals a precaution which, if ignored, could result in damage to
equipment. „ Always wear gloves for disassembly and reassembly to avoid
injury from sharp metal edges.
Important tips for procedures are described under the heading “CHECK POINT”. „ To protect sensitive microprocessors and circuitry, use static
discharge equipment, such as anti-static wrist straps, when
If the assembly procedure is different from the reversed disassembly procedure, the accessing internal components.
correct procedure is described under the heading “REASSEMBLY”. „ Be aware that letting the laser beam get into your eye directly
could result in loss of vision.
Any adjustments required after reassembly of components or parts are described under
the heading “ADJUSTMENT REQUIRED”. „ Never open any cover on which a Warning Label for Laser
Beam is attached.
When you have to remove any units or parts that are not described in this chapter, refer „ Use extreme caution to avoid injury of yourself and anyone
to the exploded diagrams in the appendix. around you with a clear understanding of hazardous nature
of the laser beam.
„ The Fuser unit and other high-temperature parts remain at
hazardous temperature for a certain period of time even after
stop of operation and turning off of the power. To prevent
suffering a burn, be sure to wait after power turning off until
the temperature of the parts cool down to a safe level, and
then start working on the printer.
„ To avoid dust explosion or ignition, never bring any
consumables close to flame or throw them into fire.
„ When developer or oil stuck to your skin or clothes, wipe it off
with a dry cloth carefully and wash it off with water
immediately.

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W A R N IN G „ Be careful not to let the developer or toner get into your eye or W A R N IN G „ Use only recommended tools for disassembling, assembling or
mouth, and not to inhale it. And also care should be taken for adjusting the printer.
people around you to prevent them from the same thing. „ Apply lubricants and adhesives as specified.
(Spread a sheet of paper inside and around the printer to „ Make the specified adjustments when you disassemble the
prevent soiling.) printer. (Refer to Chapter5 for details.)
„ Since there are many different screws, use them in correct
positions. Be extremely careful of the difference between the
screws for resin and those for sheet metal. If the screw for
resin is mistaken for the screw for sheet metal, its threads will
be broken, leading to a crushed screw hole or trouble.
„ Do not pick up the spilt toner with a vacuum cleaner (for
home use). To do so may cause the sucked toner particles to
catch fire by sparks of the electric contacts. If the toner has
spilt on the floor, etc., clean it with a broom or wipe it with a
cloth moistened with neural detergent. If it is necessary to
clean a lot of spilt toner with a cleaner, use a cleaner
exclusively designed for toner.

Leg_Sec001_014EA

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4.1.2 Before you start work † Turn the printer OFF, and disconnect the power cord before starting work.
† Before disassembling the printer, remove Photoconductor Unit.
This chapter describes the procedures for removing and attaching the main parts of the
printer with the printer broken down into 12 main components according to the parts † If necessary, remove DUPLEX before disassembling the printer.
list.
† Before performing work around FUSER ASSY, allow the FUSER ASSY and its
surrounding area to sufficiently cool down.
Disassembly/Reassembly
Category
Reference Page (Section No.) † Take sufficient care during work as exerting unnecessary force may damage parts
COVER p.283 (4.2) or cause them to malfunction.
MSI p.304 (4.3) † Avoid staticky places such as on a carpet when servicing.
PH ASSY p.324 (4.4)
† Wear a wrist strap to discharge static electricity from the human body, whenever
TRANSFER p.341 (4.5) possible. When must work without an antistatic wrist band or any other goods for
XERO p.361 (4.6) static protection, touch metallic portion of the printer connected to the earth before
ROS p.375 (4.7) getting started.
DEVE p.378 (4.8) † After work is finished, use CLEANER ASSY to clean the window of ROS ASSY.
FUSER p.388 (4.9)
DRIVE p.393 (4.10)
ELECTRICAL p.400 (4.11)
DUPLEX p.412 (4.12)
500 PAPER CASSETTE & 500 PAPER FEEDER p.446 (4.13)

C A U T IO N „ When performing work on parts controlled as spare parts

which the disassembling procedures are not given in this
manual, fully observe how they are attached before starting
work.
„ In principle, options must already have been removed before
starting work. However, if there is no need to remove them, it
is allowed to service with them attached.

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4.1.3 List of Screws

Many types of screws are used on this printer. Do not mistakenly attach them at the wrong positions. Pay special attention when handling screws for plastic and screws for metal
plates. If you mix up these screws, screw holes will be damaged. Screw threads also will be damaged, which may cause further trouble.

C A U T IO N Positions inscribed with the letter “T” on the frame indicate screws
for plastic.

Table 4-1. List of screws

No. Type Application Shape How to Recognize Screw Type Cautions
1 For plastic Resin • Silver colored This is a self-tapping screw. It threads the screw hole, so take care not to screw it
Screw diagonally.
• Screw threads are rougher than metal
Silver tapping Rough
plate TYPE
Part, Plastic • Screw tip is fine.
etc.

2 For plastic Plastic • Silver colored This is a self-tapping screw. It threads the screw hole, so take care not to screw it
Screw • With flange diagonally
Silver tapping Rough • Screw threads are rougher than metal
with flange Part, Plastic plate TYPE
etc.
• Screw tip is fine.
3 For plastic Plastic • Silver colored This is a self-tapping screw. It threads the screw hole, so take care not to screw it
Screw • With washer diagonally
Silver tapping • Screw threads are rougher than metal
Rough
with washer Part, Plastic plate TYPE
etc.
• Screw tip is fine.
4 For metal Metal This is a self-tapping screw. It threads the screw hole, so take care not to screw it
plate Screw plate • Silver colored diagonally
Silver tapping • With flange
with flange Part, Metal • Screw tip is slightly fine.
etc. plate

5 For metal Metal

plate Screw plate • Silver colored
Silver tapping • With flange
with flange Part, Metal • Uniform screw diameter
etc. plate

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Table 4-1. List of screws

No. Type Application Shape How to Recognize Screw Type Cautions
6 For metal Metal
plate Screw plate • Silver colored
Silver • Uniform screw diameter
Part, Metal

7 For metal Metal

plate Screw plate • Silver colored
Silver with • With external toothed washer
external Part, Metal
toothed • Uniform screw diameter
washer

4.1.4 Tools
Use only specified tools to avoid damaging the printer.

Name Commercial Availability Code

Phillips screwdriver No.1 Available B743800100
Phillips screwdriver No.2 Available B743800500
Slotted screwdriver Available B743000100
Cutting pliers Available B740400100
Tweezers Available ---
E-Ring holder Available ---

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4.1.5 Conventions used in descriptions of procedures † Sections in procedures described as “In the case of the … specification” refer to
work to be performed on printers of a specific specification. (Work is not to be
† Expressions relating to directions in procedures are defined as follows: performed on printers that do not fall under this specification.)
„ FRONT : Front direction facing the front side of the printer † Screws in illustrations are to be loosened and removed using a Phillips screwdriver
„ REAR : Rear direction facing the front side of the printer unless otherwise specified.

„ LEFT : Left direction facing the front side of the printer † Black arrows in illustrations indicate that the part should be moved in the indicated
direction.
„ RIGHT : Right direction facing the front side of the printer When black arrows are given a consecutive number, this indicates that they should
be moved in the indicated order.

REAR † For details on positions of connectors (P/J), refer to “ APPENDIX” (p510)

LEFT

RIGHT

FRONT
Leg_Sec03_001EA

Figure 4-1. Definition of Printer Orientation

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4.2 COVER

4.2.1 COVER ASSY TOP 3)

REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Remove the 2 E-rings fastening COVER ASSY TOP to the main unit.
3. Open COVER ASSY TOP and side it to the right to remove it.

REINSTALLATION 2)
1. Attach COVER ASSY TOP to the printer with the COVER ASSY TOP opened.
2)
C A U T IO N When performing the following work, use the outer of the two
grooves located on the stud.

2. Fasten COVER ASSY TOP with the 2 E-rings.

3. Attach COVER ASSY RH. (p.301)

Leg_Sec03_002EC
Figure 4-2. Removal of COVER ASSY TOP

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4.2.2 TRAY EXTENSION, COVER TRAY 3)-2

3)-1
3)-1
REMOVAL

1. Draw out COVER TRAY until it comes to a stop.

2. Open COVER ASSY TOP.
3. Unhook the hook fastening COVER TRAY to COVER ASSY TOP, and remove
COVER TRAY together with TRAY EXTENSION.
4. Open TRAY EXTENSION.

C A U T IO N When performing the following work, take care not to damage the
TRAY EXTENSION boss.
2)

5. Bend the TRAY EXTENSION boss with a small screw driver or similar tool, and
draw out and remove the TRAY EXTENSION boss from the hole on COVER
TRAY.

REINSTALLATION Leg_Sec03_003EC

Figure 4-3. Removal of TRAY EXTENSION and COVER TRAY (1)

C A U T IO N When performing the following work, take care not to damage the
TRAY EXTENSION boss. 5)-2

1. With TRAY EXTENSION opened, insert the boss on one side of the TRAY
EXTENSION into the hole on COVER TRAY, and attach the TRAY
EXTENSION boss on the other side into the hole on COVER TRAY while 4)
bending down the TRAY EXTENSION boss.
2. Close TRAY EXTENSION. 5)-1
3. Align COVER TRAY with the attachment position on COVER ASSY TOP, and
attach COVER TRAY together with TRAY EXTENSION.
4. Close COVER ASSY TOP. Leg_Sec03_501EB

Figure 4-4. Removal of TRAY EXTENSION and COVER TRAY (2)

5. Push in COVER TRAY gently until it comes to a stop.

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4.2.3 COVER FUSER

REMOVAL

1. Open COVER FUSER.

1) 2)-1
2. Draw out the COVER RH boss from the hole on COVER FUSER while pushing
COVER RH outward, and remove COVER FUSER.

REINSTALLATION

2)-2
C A U T IO N When performing the following work, firmly insert the protrusions
on the left and right sides of COVER FUSER into the respective
inner sides of COVER LH and COVER RH.

1. With COVER FUSER opened, insert the hole on the left side of COVER FUSER Protrusion
into the COVER LH boss while inserting the protrusion on the left side of COVER
FUSER into the inside of COVER LH, and insert the COVER RH boss into the
hole on the right side of COVER FUSER to attach while inserting the protrusion
on the right side of COVER FUSER into the inside of COVER RH.
CAUTION LEFT
2. Close COVER FUSER. Leg_Sec03_005EB
Figure 4-5. Removal of COVER FUSER

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4.2.4 COVER TOP SIDE L 4)

REMOVAL

1. In the case of the DUPLEX specification, open DUPLEX ASSY.

2. In the case of the standard specification, open COVER FUSER. (p.285)
3. Open COVER ASSY TOP.
5)
4. Loosen the screw (silver, with flange, 8 mm) fastening COVER TOP SIDE L to
the main unit.

C A U T IO N The screw fastening COVER TOP SIDE L is designed not to come

loose from COVER TOP SIDE L.

5. Remove COVER TOP SIDE L from the main unit.

REINSTALLATION
Leg_Sec03_502EA
1. Match the hole on COVER TOP SIDE L with the boss on the main unit. Figure 4-6. Removal of COVER TOP SIDE L
2. Fasten COVER TOP SIDE L to the main unit with the screw (silver, with flange, 8
mm).
3. Close COVER ASSY TOP.
4. In the case of the standard specification, close COVER FUSER. (p.285)
5. In the case of the DUPLEX specification, close DUPLEX ASSY.

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4.2.5 COVER TOP SIDE R 5)

REMOVAL

1. In the case of the DUPLEX specification, open DUPLEX ASSY. 4)

2. In the case of the standard specification, open COVER FUSER. (p.285)
3. Open COVER ASSY TOP.
4. Remove the screw (silver, with flange, 8 mm) fastening COVER TOP SIDE R to
the main unit.
5. Remove COVER TOP SIDE R from the main unit.

REINSTALLATION

1. Match the hole on COVER TOP SIDE R with the boss on the main unit.
2. Fasten COVER TOP SIDE R to the main unit with the screw (silver, with flange, 8
mm).
3. Close COVER ASSY TOP.
Leg_Sec03_503EA
4. In the case of the standard specification, close COVER FUSER. (p.285) Figure 4-7. Removal of COVER TOP SIDE R
5. In the case of the DUPLEX specification, close DUPLEX ASSY.

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4.2.6 SWITCH ASSY TOP

REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Unclamp the two clamps fastening the harness of SWITCH ASSY TOP, and
remove the harness. Intermediate connector
When performing the following work, leave the intermediate
(blue)
C A U T IO N
connector (blue) on the harness side.

4)
3. Disconnect connector (P/J116, blue) of SWITCH ASSY TOP.
4. Remove the screw (silver, with flange, 8 mm) fastening SWITCH ASSY TOP to 2)
the main unit.
3)
5. Remove SWITCH ASSY TOP from the main unit. 2)
(Blue)
REINSTALLATION

1. Match the hole on SWITCH ASSY TOP with the boss on the main unit, and
attach.
2. Fasten SWITCH ASSY TOP to the main unit with the screw (silver, with flange, 8 Leg_Sec03_006EB

mm). Figure 4-8. Removal of SWITCH ASSY TOP

3. Connect connector (P/J116, blue) of SWITCH ASSY TOP.
4. Clamp the harness of SWITCH ASSY TOP with the two clamps.
5. Attach COVER ASSY RH. (p.301)

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4.2.7 SWITCH ASSY FRONT

REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Unclamp the clamp fastening the harness of SWITCH ASSY FRONT and remove Intermediate connector
the harness. (white)
3. Remove the screw (silver, with flange, 8 mm) fastening SWITCH ASSY FRONT 4)
to the main unit.
5)
4. Remove SWITCH ASSY FRONT from the main unit.

C A U T IO N When performing the following work, leave the intermediate

connector (white) on the harness side. 3)

2)
5. Disconnect connector (P/J115, white) and connector (P/J125) from SWITCH
ASSY FRONT. 5)
(White)

Leg_Sec03_504EC
REINSTALLATION
Figure 4-9. Removal of SWITCH ASSY FRONT
1. Connect connector (P/J115, white) and connector (P/J125) to SWITCH ASSY
FRONT.
2. Match the hole on SWITCH ASSY FRONT with the boss on the main unit.
3. Fasten SWITCH ASSY FRONT to the main unit with the screw (silver, with
flange, 8 mm).
4. Fasten the harness of SWITCH ASSY FRONT with the clamp.
5. Attach COVER ASSY RH. (p.301)

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4.2.8 COVER RH, SLIDE BAR, COVER ROS WINDOW

REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Unhook the four hooks fastening GUIDE BAR to COVER RH, and remove
GUIDE BAR.
3. Remove the screw (silver, with flange, tapping, 8 mm) fastening COVER ROS
WINDOW to SLIDE BAR. 5)
4. Slide COVER ROS WINDOW along the rib of COVER RH, and remove COVER
ROS WINDOW from the protrusion on COVER RH. 2)
5. Remove SLIDE BAR from COVER RH.

REINSTALLATION

1. Attach SLIDE BAR at the attachment position on the rear side of COVER RH.

When performing the following work, be sure to insert the top and 4) 2)
C A U T IO N
bottom of COVER ROS WINDOW inside the protrusions on 3)
COVER RH.

2. Match COVER ROS WINDOW with the attachment position on the rear of
COVER RH, slide COVER ROS WINDOW along the ribs on COVER RH, and
attach COVER ROS WINDOW to SLIDE BAR.
3. Fasten COVER ROS WINDOW to SLIDE BAR with the screw (silver, with
flange, tapping, 8 mm).
4. Match the holes on GUIDE BAR with the boss of COVER RH, attach GUIDE
BAR, and fasten by the four hooks.

C A U T IO N After performing the above work, move SLIDE BAR to make sure
that COVER ROS WINDOW can be opened/closed smoothly.
CAUTION
Leg_Sec03_007EA
Figure 4-10. Removal of COVER RH, SLIDE BAR and COVER ROS WINDOW
5. Attach COVER ASSY RH. (p.301)

DISASSEMBLY AND ASSEMBLY COVER 290

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 EPSON AcuLaser C1100 Revision B

4.2.9 COVER MSI

REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Slide COVER MSI in a slightly open state to the right to remove from the main
unit.

2)-1
REINSTALLATION

1. Match the hole on COVER MSI with the boss on the main unit with COVER MSI
in a slightly open state, and slide COVER MSI to the left to attach.
2. Attach COVER ASSY RH. (p.301)

2)-2
Leg_Sec03_008EA
Figure 4-11. Removal of COVER MSI

DISASSEMBLY AND ASSEMBLY COVER 291

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 EPSON AcuLaser C1100 Revision B

4.2.10 COVER FRONT L, COVER FRONT ASSY U

REMOVAL

1. Remove COVER ASSY RH. (p.301) 5)-1

2. Remove COVER ASSY LH. (p.295)
3. Remove COVER MSI. (p.291)
4. Remove the 3 screws (silver, with flange, 8 mm) fastening COVER FRONT L to
the main unit.
5. Slide COVER FRONT L to the right, unhook the two hooks on the rear of COVER
FRONT L from the holes on the main unit, and remove COVER FRONT L
together with COVER FRONT ASSY U.
4)
C A U T IO N When performing the following work, take care not to damage the
COVER FRONT ASSY U boss.
4)
5)-2 4) Leg_Sec03_009EB

6. Press the bosses on the left and right of COVER FRONT ASSY U by inserting a Figure 4-12. Removal of COVER FRONT L and COVER FRONT ASSY U (1)
screwdriver, and draw out from the holes on COVER FRONT L to remove
COVER FRONT ASSY U from COVER FRONT L.

6)-1

6)-2

Leg_Sec03_010EB

Figure 4-13. Removal of COVER FRONT L and COVER FRONT ASSY U (2)

DISASSEMBLY AND ASSEMBLY COVER 292

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

C A U T IO N When performing the following work, take care not to damage the
COVER FRONT ASSY U boss.

1. Match the boss on COVER FRONT ASSY U with the holes on COVER FRONT
L while bending down COVER FRONT ASSY U, and attach COVER FRONT
ASSY U to COVER FRONT L.
2. Match the two hooks on the rear of COVER FRONT L with the holes on the main
unit, and attach COVER FRONT L together with COVER FRONT ASSY U.
3. Fasten COVER FRONT L to the main unit with the 3 screws (silver, with flange, 8
mm).
4. Attach COVER MSI. (p.291)
5. Attach COVER ASSY LH. (p.295)
6. Attach COVER ASSY RH. (p.301)

DISASSEMBLY AND ASSEMBLY COVER 293

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 EPSON AcuLaser C1100 Revision B

4.2.11 OP PANEL (CONTROL, PANEL)

REMOVAL
4)-2
1. Open COVER ASSY TOP.
2. Open COVER FRONT ASSY U. 3)

C A U T IO N When performing the following work, take care not to remove OP

PANEL too far as it is connected by a harness.
3)

3. Remove the 3 screws (silver, with flange, 6 mm) fastening OP PANEL to the main 3)
unit. 4)-1
4. Remove the protrusions on the left and right of OP PANEL from COVER RH and
COVER LH while pushing them outward, and slightly remove OP PANEL from
the main unit.
5. Disconnect connector CN1 and the terminal connected to OP PANEL to remove 4)-1
OP PANEL.

REINSTALLATION

C A U T IO N When performing the following work, take care to prevent the

harness from being caught between the main unit and OP PANEL.

1. Connect connector CN1 and the terminal to OP PANEL.

2. While extending COVER RH and COVER LH each to the left and right, put the Leg_Sec03_184EB

protrusions on the left and right of OP PANEL inside COVER RH and COVER Figure 4-14. Removal of OP PANEL
LH, and attach OP PANEL to the main unit.
3. Fasten OP PANEL to the main unit with the 3 screws (silver, with flange, 6 mm).
4. Close COVER FRONT ASSY U.
5. Close COVER ASSY TOP.

DISASSEMBLY AND ASSEMBLY COVER 294

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 EPSON AcuLaser C1100 Revision B

4.2.12 COVER ASSY LH

REMOVAL

1. In the case of the DUPLEX specification, remove DUPLEX ASSY. (p.412) 8)-1
2. In the case of the standard specification, remove COVER FUSER. (p.285)
3. Remove OP PANEL. (p.294)
4. Open COVER MSI.
5. Remove COVER ESS. (p.297)
6. Remove the 4 screws (silver, with flange, 8 mm) fastening COVER ASSY LH to
the main unit. 8)-2
7)
7. Lift up COVER ASSY LH, and unhook the 4 hooks on the rear of COVER ASSY
LH from the holes on the main unit.
8. Remove COVER ASSY LH from the main unit while avoiding the interface
6)
connector on the rear of the main unit.

6)

4)

6)
6) Protrusion

CAUTION
Leg_Sec03_011EC

Figure 4-15. Removal of COVER ASSY LH

DISASSEMBLY AND ASSEMBLY COVER 295

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

1. Match the square hole on the rear side of COVER ASSY LH with the interface
connector on the rear side of the main unit.

C A U T IO N When performing the following work, firmly insert the protrusion

on the front side of COVER ASSY LH into the indent on COVER
FRONT L.

2. Match the 4 hooks on the rear side of COVER ASSY LH with the holes on the
main unit while inserting the protrusion on the front side of COVER ASSY LH
into the concave portion on COVER FRONT L, and attach COVER ASSY LH.
3. Fasten COVER ASSY LH to the main unit with the 4 screws (silver, with flange, 8
mm).
4. Attach COVER ESS. (p.297)
5. Close COVER MSI.
6. Attach OP PANEL. (p.294)
7. In the case of the standard specification, attach COVER FUSER. (p.285)
8. In the case of the DUPLEX specification, attach DUPLEX ASSY. (p.412)

DISASSEMBLY AND ASSEMBLY COVER 296

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 EPSON AcuLaser C1100 Revision B

4.2.13 COVER ESS

REMOVAL

1. Loosen the screw fastening COVER ESS to the main unit.

2. Remove COVER ESS from the main unit. 1)

2)
REINSTALLATION

1. Match the two protrusions on the bottom side of COVER ESS with the holes on
COVER LH, and attach COVER ESS.
2. Fasten COVER ESS to the main unit with the screw.

Leg_Sec03_188EC
Figure 4-16. Removal of COVER ESS

DISASSEMBLY AND ASSEMBLY COVER 297

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 EPSON AcuLaser C1100 Revision B

4.2.14 SWITCH ASSY FUSER, SWITCH-FUSER DOOR

REMOVAL

1. Remove COVER ASSY LH. (p.295)

2. Unclamp the clamp fastening the harness of SWITCH ASSY FUSER and remove
the harness. 6)-2
3. Remove the screw (silver, with flange, 8 mm) fastening SWITCH ASSY FUSER 6)-1
to the main unit. 7)
4. Remove SWITCH ASSY FUSER from the main unit.
2)
C A U T IO N When performing the following work, leave the intermediate 3)
connector on the harness side.

4)
5. Disconnect the connector (P/J117, blue) from SWITCH ASSY FUSER.
6. Unhook the two hooks fastening SWITCH-FUSER DOOR to BRACKET INLK 5)
FUSER, and remove SWITCH-FUSER DOOR.
7. Disconnect connector (P/J114) from SWITCH-FUSER DOOR.

REINSTALLATION Leg_Sec03_012EB

1. Connect connector (P/J114) to SWITCH-FUSER DOOR. Figure 4-17. Removal of SWITCH ASSY FUSER and SWITCH-FUSER DOOR

2. Match the hooks on SWITCH-FUSER DOOR with the attachment position, and
attach to BRACKET INLK FUSER.
3. Connect the connector (P/J117, blue) to SWITCH ASSY FUSER.
4. Match the hole on SWITCH ASSY FUSER with the boss on the main unit.
5. Fasten SWITCH ASSY FUSER to the main unit with the screw (silver, with
flange, 8 mm).
6. Fasten the harness of SWITCH ASSY FUSER with the clamp.
7. Attach COVER ASSY LH. (p.295)

DISASSEMBLY AND ASSEMBLY COVER 298

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 EPSON AcuLaser C1100 Revision B

4.2.15 COVER INNER TOP

REMOVAL

1. Remove OP PANEL. (p.294)

2)
2. Remove the 2 screws (silver, with flange, 6 mm) fastening COVER INNER TOP
to the main unit. 3) 2)
3. Remove COVER INNER TOP from the main unit.

REINSTALLATION

1. Match the hole on COVER INNER TOP with the boss on the main unit.
2. Fasten COVER INNER TOP to the main unit with the 2 screws (silver, with
flange, 6 mm).
3. Attach OP PANEL. (p.294)

Leg_Sec03_187EB
Figure 4-18. Removal of COVER INNER TOP

DISASSEMBLY AND ASSEMBLY COVER 299

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 EPSON AcuLaser C1100 Revision B

4.2.16 SWITCH-FRONT DOOR, SWITCH-INLK 5)-1

FRONT
REMOVAL

C H E C K SWITCH-FRONT DOOR and SWITCH-INLK FRONT can each

P O IN T be removed separately.

1. Remove COVER ASSY RH. (p.301)

2. Remove SWITCH ASSY FRONT. (p.289)
3. Remove the screw (gold, 8 mm) fastening SWITCH-INLK FRONT to BRACKET
INLK FRONT.
4. Remove SWITCH-INLK FRONT from BRACKET INLK FRONT. 5)-2
5. Unhook the two hooks fastening SWITCH-FRONT DOOR to BRACKET INLK
FRONT, and remove SWITCH-FRONT DOOR.

REINSTALLATION

1. Match the hooks on SWITCH-FRONT DOOR with the attachment position, and
attach to BRACKET INLK FRONT.
2. Match the hole on SWITCH-INLK FRONT with the boss on BRACKET INLK
FRONT. 3) 4)
3. Fasten SWITCH-INLK FRONT to BRACKET INLK FRONT with the screw
(gold, 8 mm).
4. Attach SWITCH ASSY FRONT. (p.289) Leg_Sec03_505EB

5. Attach COVER ASSY RH. (p.301) Figure 4-19. Removal of SWITCH-FRONT DOOR and SWITCH-INLK FRONT

DISASSEMBLY AND ASSEMBLY COVER 300

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 EPSON AcuLaser C1100 Revision B

4.2.17 COVER ASSY RH

REMOVAL

1. In the case of the DUPLEX specification, remove DUPLEX ASSY. (p.412)

2. In the case of the standard specification, remove COVER FUSER. (p.285)
3. Remove OP PANEL. (p.294)
4. Open COVER MSI.
5. Remove the 4 screws (silver, with flange, 8mm) fastening COVER ASSY RH to 6)-2
the main unit. 6)-1
6. Lift up COVER ASSY RH, and unhook the 4 hooks on the rear of COVER ASSY
RH from the holes on the main unit, and remove COVER ASSY RH.

5)
REINSTALLATION

C A U T IO N When performing the following work, be sure to insert the

protrusion on the front side of COVER ASSY RH into the concave
portion on COVER FRONT L.
5)
1. Fit section A of COVER ASSY PH over the front surface of COVER FRONT L
while inserting the protrusion on the front of COVER ASSY RH into the concave
portion on COVER FRONT L, match the four hooks on the rear of COVER ASSY
4) 5)
RH with the holes on the main unit, and attach COVER ASSY RH.
2. Fasten COVER ASSY RH to the main unit with the 4 screws (silver, with flange,
8mm). 5)
Protrusion
3. Close COVER MSI.
4. Attach OP PANEL. (p.294)
CAUTION
5. In the case of the standard specification, attach COVER FUSER. (p.285)
6. In the case of the DUPLEX specification, attach DUPLEX ASSY. (p.412)
Section A
Leg_Sec03_185EC
Figure 4-20. Removal of COVER ASSY RH

DISASSEMBLY AND ASSEMBLY COVER 301

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 EPSON AcuLaser C1100 Revision B

4.2.18 COVER INNER L

REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Remove COVER ASSY LH. (p.295)
3. Remove COVER MSI. (p.291)
4. Remove COVER FRONT L and COVER FRONT ASSY U. (p.292)
5. Remove the 2 screws (silver, with flange, 8 mm) fastening COVER INNER L to
the main unit.
6. Unhook the hook on the rear of COVER INNER L from the hole on the main unit,
and remove COVER INNER L.

5)
REINSTALLATION

1. Match the hook on the rear of COVER INNER L with the hole on the main unit,
6) 5)
and attach COVER INNER L.
Leg_Sec03_186EB
2. Fasten COVER INNER L to the main unit with the 2 screws (silver, with flange, 8
mm). Figure 4-21. Removal of COVER INNER L

3. Attach COVER FRONT L and COVER FRONT ASSY U. (p.292)

4. Attach COVER MSI. (p.291)
5. Attach COVER ASSY LH. (p.295)
6. Attach COVER ASSY RH. (p.301)

DISASSEMBLY AND ASSEMBLY COVER 302

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 EPSON AcuLaser C1100 Revision B

4.2.19 SWITCH-INLK FUSER

REMOVAL

1. Remove COVER ASSY LH. (p.295) 4)

2. Remove SWITCH ASSY FUSER. (p.298)
3. Remove the screw (silver, 8 mm) fastening SWITCH-INLK FUSER to
BRACKET INLK FUSER.
3)
4. Remove SWITCH-INLK FUSER from BRACKET INLK FUSER.

REINSTALLATION

1. Match the hole on SWITCH-INLK FUSER with the boss on BRACKET INLK
FUSER.
2. Fasten SWITCH-INLK FUSER to BRACKET INLK FUSER with the screw
(silver, 8 mm). Leg_Sec03_506EB
3. Attach SWITCH ASSY FUSER. (p.298) Figure 4-22. Removal of SWITCH-INLK FUSER

4. Attach COVER ASSY LH. (p.295)

DISASSEMBLY AND ASSEMBLY COVER 303

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 EPSON AcuLaser C1100 Revision B

4.3 MSI

4.3.1 MSI ASSY 6)

6)
C A U T IO N Step numbers with [ ] in the figure indicate the step of
reinstallation.
7)
7)
REMOVAL

1. Remove COVER ASSY RH. (p.301)

8)
2. Remove COVER ASSY LH. (p.295) 8)
3. Remove COVER MSI. (p.291) 8)
9)-1
4. Remove COVER FRONT L and COVER FRONT ASSY U. (p.292)
5. Remove FRAME ASSY-PH. (p.327)
CAUTION
6. Disconnect connector (P/J408) and connector (P/J409) from PWBA MCU.
7. Unclamp the two clamps on CHASSIS ESS, and disconnect the harness from
HARNESS-ASSY P/H 1.
8. Remove the 6 screws (silver, with flange, tapping, 8 mm) fastening MSI ASSY to
the main unit.

C A U T IO N „ When performing the following work, take care to prevent the

cable tie that bundles the harness of HARNESS-ASSY P/H 1 8)
from being caught on the holes, etc. on the main unit.
„ When performing the following work, take care to prevent the 9)-2 8)
HARNESS-ASSY P/H 1 from being sandwiched between the 8)
main unit and MSI ASSY.

9. Draw out MSI ASSY slightly toward you, lift up MSI ASSY slightly to avoid TIE
PLATE under the main unit, gently draw out MSI ASSY forward again and draw
out HARNESS-ASSY P/H 1 from the hole on the main unit to remove MSI ASSY. Leg_Sec03_042EB

Figure 4-23. Removal of MSI ASSY

DISASSEMBLY AND ASSEMBLY MSI 304

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

C A U T IO N „ When performing the following work, take care to prevent the

cable tie that bundles the harness of HARNESS-ASSY P/H 1
from being caught on the holes, etc. on the main unit.
„ When performing the following work, take care to prevent the
HARNESS-ASSY P/H 1 from being sandwiched between the [2)-1]
main unit and MSI ASSY.
[2)-2]
1. Gently insert HARNESS-ASSY P/H 1 along the left side of MSI ASSY together
with MSI ASSY from the front of the main unit.
2. Insert MSI ASSY about halfway with the front of MSI ASSY lifted slightly to
avoid TIE PLATE under the main unit, and then bring out the connector of
HARNESS-ASSY P/H 1 from the hole on the main unit.
[3)]
3. After matching MSI ASSY to the main unit attachment position, gently pull
HARNESS-ASSY P/H 1 from the outside to take up any slack inside the main
unit. [1)]
CAUTION
4. Fasten MSI ASSY to the main unit with the 6 screws (silver, with flange, tapping,
8 mm).
5. Connect connector (P/J408) and connector (P/J409) to PWBA MCU.
6. Fasten the harness of HARNESS-ASSY P/H 1 with the two clamps on CHASSIS
ESS.
7. Attach FRAME ASSY-PH. (p.327)
8. Attach COVER FRONT L and COVER FRONT ASSY U. (p.292) Leg_Sec03_507EB

9. Attach COVER MSI. (p.291) Figure 4-24. Reinstallation of MSI ASSY

10. Attach COVER ASSY LH. (p.295)
11. Attach COVER ASSY RH. (p.301)

Table 4-2. Symptoms when the connector is loose

Connector Error Caused by Connector
Panel Indication Symptom
No. Disconnection
Printing is not
P/J408 E Open Paper Feeder Rear Cover is open.
possible.
Printing is not
P/J409 Service Req E511 Sensor TR0 error
possible.

DISASSEMBLY AND ASSEMBLY MSI 305

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 EPSON AcuLaser C1100 Revision B

4.3.2 ROLL ASSY MSI

11) 11)
REMOVAL
10) 10)

1. Remove COVER ASSY RH. (p.301)

2. Remove COVER ASSY LH. (p.295)
9) 9)
3. Remove COVER MSI. (p.291) 12)
4. Remove COVER FRONT L and COVER FRONT ASSY U. (p.292)
5. Remove FRAME ASSY-PH. (p.327)
6. Remove MSI ASSY. (p.304)
7. Remove SOLENOID PICK UP. (p.319)
D cut surface
When performing the following work, work can be performed more CHECK POINT
C H E C K
P O IN T easily by turning ROLL ASSY MSI in the direction of the arrow to
release CAM PICK UP MSI and to set PLATE BOTTOM ASSY
MSI to a raised state. 8)

8. Remove the left and right SPRING-N/F MSI hooked on the left and right
BEARING MSI from MSI ASSY.
9. Remove the E-rings fastening the left and right CAM PICK UP MSI on SHAFT
ASSY MSI from MSI ASSY.
8)
10. Match the notch of CAM PICK UP MSI with the positioning pin of SHAFT ASSY
MSI, and slide the left and right CAM PICK UP MSI to the inside.
11. Match the notch of BEARING MSI with the positioning pin of SHAFT ASSY Oval
MSI, and slide the left and right BEARING MSIs to the inside from the left and side
right holes of MSI ASSY.
12. Temporarily slide ROLL ASSY MSI to the left, and draw out the shaft of ROLL CAUTION
Semi-
ASSY MSI from the right-side bearing of MSI ASSY to remove ROLL ASSY circular
CAUTION side CAUTION
MSI.
Leg_Sec03_054FB

Figure 4-25. Removal of ROLL ASSY MSI

DISASSEMBLY AND ASSEMBLY MSI 306

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION 6. Attach SOLENOID PICK UP. (p.319)

7. Attach MSI ASSY. (p.304)

C A U T IO N When performing the following work, attach with the retainer of 8. Attach FRAME ASSY-PH. (p.327)
PAPER GUIDE facing down. 9. Attach COVER FRONT L and COVER FRONT ASSY U. (p.292)
10. Attach COVER MSI. (p.291)

1. Insert the left side of the shaft on ROLL ASSY MSI into the left-side bearing of 11. Attach COVER ASSY LH. (p.295)
MSI ASSY, and then slide ROLL ASSY MSI to the right and attach ROLL ASSY 12. Attach COVER ASSY RH. (p.301)
MSI.
2. Match the notch of left and right BEARING MSI on ROLL ASSY MSI with the
positioning pin of SHAFT ASSY MSI, and insert BEARING MSI into the left and
right bearings of MSI ASSY to fasten ROLL ASSY MSI in place.
3. Match the notch of the left and right CAM PICK UP MSI on ROLL ASSY MSI
with the positioning pin of SHAFT ASSY MSI, and slide the left and right CAM
PICK UP MSI to the outside.

C A U T IO N The notch of CAM PICK UP MSI must be properly matched with

the positioning pin of ROLL ASSY MSI.

4. Fasten the left and right CAM PICK UP MSI to SHAFT ASSY MSI with E-rings.

C H E C K When performing the following work, work can be performed more

P O IN T easily by turning ROLL ASSY MSI in the direction of the arrow to
release CAM PICK UP MSI and to set PLATE BOTTOM ASSY
MSI to a raised state.

C A U T IO N When performing the following work, pay attention to the

attachment direction of SPRING-N/F MSI.
The oval side of the attachment section of SPRING-N/F MSI is
attached to BEARING MSI.
The semi-circular side of the attachment section of SPRING-N/F
MSI is attached to PLATE BOTTOM ASSY MSI.

5. Attach SPRING-N/F MSI to the left and right BEARING MSI.

DISASSEMBLY AND ASSEMBLY MSI 307

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 EPSON AcuLaser C1100 Revision B

4.3.3 ROLL MSI

2)-1 Arrow
REMOVAL

1. Remove FRAME ASSY-PH. (p.327)

2. Unhook the hook on the right-side CORE fastening SHAFT ASSY MSI, and slide
to the right.
3. Slide ROLL MSI to the right, and draw out the attachment groove of ROLL MSI
from the pin of SHAFT ASSY MSI to remove ROLL MSI from SHAFT ASSY 3)
MSI.

REINSTALLATION
2)-2

C A U T IO N Pay attention to the attachment orientation of ROLL MSI. (Attach

with the direction of the arrows indicated on ROLL MSI aligned
with the directions in the illustration.)

1. Place the U cut section of ROLL MSI on SHAFT ASSY MSI and slide to the left,
and insert the positioning pin of SHAFT ASSY MSI into the notch of ROLL
ASSY to attach ROLL ASSY to SHAFT ASSY MSI.
2. Slide the right-side CORE to the left, and fasten the CORE hook to the groove on
SHAFT ASSY MSI.
3. Attach FRAME ASSY-PH. (p.327)

Leg_Sec03_043EA
Figure 4-26. Removal of ROLL MSI

DISASSEMBLY AND ASSEMBLY MSI 308

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 EPSON AcuLaser C1100 Revision B

4.3.4 CHUTE MSI

REMOVAL

1. Remove FRAME ASSY-PH. (p.327)

2. Bend down CHUTE MSI, and draw out the right-side boss on CHUTE MSI from
the right-side hole on MSI ASSY to remove CHUTE MSI.

REINSTALLATION

1. Insert the left-side boss on CHUTE MSI into the left-side hole of MSI ASSY, then
bend down CHUTE MSI, insert the right-side boss of CHUTE MSI, and attach 2)-1
CHUTE MSI.
2. Attach FRAME ASSY-PH. (p.327)
2)-2
RIGHT
Leg_Sec03_044EB
Figure 4-27. Removal of CHUTE MSI

DISASSEMBLY AND ASSEMBLY MSI 309

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 EPSON AcuLaser C1100 Revision B

4.3.5 GUIDE SIDE L, GUIDE ASSY SIDE R

2)-1 2)-2
REMOVAL

1. Open COVER MSI. 2)-1

3)
2. Unhook the hooks fastening the holes at the center of GUIDE SIDE COVER and
the hooks at the left and right of GUIDE SIDE COVER from the holes on FRAME
ASSY BOTTOM, and remove GUIDE SIDE COVER.
3. Remove GEAR MANUAL from FRAME ASSY BOTTOM. 2)-1
4. Slide GUIDE SIDE L to the right, remove the protrusion on GUIDE SIDE L from
the attachment section of FRAME ASSY BOTTOM, and remove GUIDE SIDE L.
5. Slide the lever of GUIDE ASSY SIDE R to the left, remove the protrusion of
GUIDE ASSY SIDE R from the attachment section of FRAME ASSY BOTTOM,
and remove GUIDE ASSY SIDE R.

REINSTALLATION

1. Match the protrusion of GUIDE ASSY SIDE R with the attachment section of Leg_Sec03_045EA

FRAME ASSY BOTTOM, insert the tension section of GUIDE ASSY SIDE R Figure 4-28. Removal of GUIDE SIDE L and GUIDE ASSY SIDE R (1)
into the groove of FRAME ASSY BOTTOM, and slide the lever of GUIDE ASSY
SIDE R to attach.
4)
2. Match the protrusion of GUIDE SIDE L with the attachment section of FRAME
ASSY BOTTOM, insert the tension section of GUIDE ASSY SIDE L into the
groove of FRAME ASSY BOTTOM, and slide GUIDE ASSY SIDE L to the left
to attach.
3. Open GUIDE ASSY SIDE R and GUIDE ASSY SIDE L as far as possible, and 5)-1
attach GEAR MANUAL to FRAME ASSY BOTTOM.
4. Attach GUIDE SIDE COVER to FRAME ASSY BOTTOM, fasten the hooks on 5)-2
the left and right of GUIDE SIDE COVER, and fasten the hole at the center of
GUIDE SIDE COVER by the hook on FRAME ASSY BOTTOM to attach
GUIDE SIDE COVER.
5. Close COVER MSI.
Leg_Sec03_046EA

Figure 4-29. Removal of GUIDE SIDE L and GUIDE ASSY SIDE R (2)

DISASSEMBLY AND ASSEMBLY MSI 310

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 EPSON AcuLaser C1100 Revision B

4.3.6 PLATE BOTTOM ASSY MSI

C A U T IO N Step numbers with [ ] in the figure indicate the step of
reinstallation.

11)-1
REMOVAL 10)-2
1. Remove COVER ASSY RH. (p.301)
2. Remove COVER ASSY LH. (p.295)
3. Remove COVER MSI. (p.291)
4. Remove COVER FRONT L and COVER FRONT ASSY U. (p.292)
9) 10)-1
5. Remove FRAME ASSY-PH. (p.327) 11)-2
6. Remove MSI ASSY. (p.304)
7. Remove SOLENOID PICK UP. (p.319)
8. Remove ROLL ASSY MSI. (p.306)
9. Remove the holes on PLATE BOTTOM 2 from the boss on PLATE BOTTOM
ASSY MSI while extending the attachment sections on the left and right of
9)
PLATE BOTTOM 2.
10. Lift up PLATE BOTTOM ASSY MSI, and remove the holes on the left and right CAUTION
of PLATE BOTTOM ASSY MSI from the left and right shafts of MSI ASSY. [2)]
11. Remove the right side of PLATE BOTTOM ASSY MSI from the right-side notch
of MSI ASSY, and remove PLATE BOTTOM ASSY MSI.

Leg_Sec03_047FA
Figure 4-30. Removal of PLATE BOTTOM ASSY MSI

DISASSEMBLY AND ASSEMBLY MSI 311

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

1. Match the left side of PLATE BOTTOM ASSY MSI with the attachment position
on the left side of MSI ASSY, and insert the right side of PLATE BOTTOM
ASSY MSI from the notch on the right side of MSI ASSY.

C H E C K When performing the following work, work can be performed more

P O IN T easily by slightly lifting up the rear of PLATE BOTTOM ASSY
MSI.

2. Insert the left and right holes of PLATE BOTTOM ASSY MSI into the shafts on
the left and right of MSI ASSY, and attach PLATE BOTTOM ASSY MSI.
3. Insert the holes of PLATE BOTTOM 2 into the boss on PLATE BOTTOM ASSY
MSI to attach while extending the left and right attachment sections of PLATE
BOTTOM 2.
4. Attach ROLL ASSY MSI. (p.306)
5. Attach SOLENOID PICK UP. (p.319)
6. Attach MSI ASSY. (p.304)
7. Attach FRAME ASSY-PH. (p.327)
8. Attach COVER FRONT L and COVER FRONT ASSY U. (p.292)
9. Attach COVER MSI. (p.291)
10. Attach COVER ASSY LH. (p.295)
11. Attach COVER ASSY RH. (p.301)

DISASSEMBLY AND ASSEMBLY MSI 312

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 EPSON AcuLaser C1100 Revision B

4.3.7 HOLDER ASSY RETARD MSI

REMOVAL

1. Remove FRAME ASSY-PH. (p.327)

2. Remove CHUTE MSI. (p.309)
3. Unhook the hooks of the PAPER GUIDEs on the left and right sides fastened to
SHAFT ASSY MSI, slide each PAPER GUIDE to the outside, and remove
CHUTE ASSY PAPER GUIDE.
4. Unhook the hooks of CORE on the left and right sides fastening SHAFT ASSY
MSI, and slide each to the outside.
5. Remove ROLL MSI. (p.308)

C A U T IO N When performing the following work, take care not to lose SPRING
RETARD MSI.

4)-1
6. Remove HOLDER ASSY RETARD MSI from FRAME ASSY BOTTOM while
bending down the boss on both sides of HOLDER ASSY RETARD MSI.

4)-2 3)-1 3)-2

4)-2
3)-1
4)-1
3)-2

Leg_Sec03_508EB
Figure 4-31. Removal of HOLDER ASSY RETARD MSI (1)

DISASSEMBLY AND ASSEMBLY MSI 313

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

C A U T IO N When SPRING RETARD MSI has come off from HOLDER ASSY
RETARD MSI, attach SPRING RETARD MSI to the boss on
HOLDER ASSY RETARD MSI, and then perform the following
work.
1. Match SPRING RETARD MSI attached to HOLDER ASSY RETARD MSI with
the spring bearing of FRAME ASSY BOTTOM, and attach the bosses on both
sides of HOLDER ASSY RETARD MSI to FRAME ASSY BOTTOM while
bending down the bosses.

C A U T IO N SPRING RETARD MSI must be properly matched with the boss on

the spring bearing of FRAME ASSY BOTTOM.

2. Attach ROLL MSI. (p.308)

3. Slide each of the left- and right-side COREs to the inside, and fasten the CORE
hook to the groove on SHAFT ASSY MSI.
6)
4. Slide each of the PAPER GUIDEs on the left and right sides to inside, attach
CHUTE ASSY PAPER GUIDE, and fasten the hooks on the PAPER GUIDEs to
the grooves on the SHAFT ASSY MSI.
5. Attach CHUTE MSI. (p.309)
6. Attach FRAME ASSY-PH. (p.327) CAUTION

C A U T IO N Make sure to install the FRAME ASSY-PH correctly by referring

the caution described in the “REINSTALLATION” of the “4.4.4
FRAME ASSY-PH” (p.327).

Leg_Sec03_048EB
Figure 4-32. Removal of HOLDER ASSY RETARD MSI (2)

DISASSEMBLY AND ASSEMBLY MSI 314

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 EPSON AcuLaser C1100 Revision B

4.3.8 PLATE ASSY RETARD

C A U T IO N Step numbers with [ ] in the figure indicate the step of
reinstallation.

REMOVAL

1. Remove FRAME ASSY-PH. (p.327)

2. Remove CHUTE MSI. (p.309)
3. Remove ROLL MSI. (p.308)
4. Remove HOLDER ASSY RETARD MSI. (p.313) Bend down PLATE ASSY
RETARD, remove the holes on the left and right from the boss on FRAME ASSY
BOTTOM, and remove PLATE ASSY RETARD.

C A U T IO N When performing the following work, do not fold or bend PLATE

ASSY RETARD.
5)-1
5)-2
5. Bend down PLATE ASSY RETARD, remove the holes on the left and right from
the boss on FRAME ASSY BOTTOM, and remove PLATE ASSY RETARD.

Leg_Sec03_049EA
Figure 4-33. Removal of PLATE ASSY RETARD

DISASSEMBLY AND ASSEMBLY MSI 315

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

C A U T IO N When performing the following work, do not fold or bend PLATE

ASSY RETARD.

1. Match the left and right U grooves of PLATE ASSY RETARD with the bosses on
the front of FRAME ASSY BOTTOM.
2. Turn the bosses aligned with the U-grooves as the fulcrum while bending down
PLATE ASSY RETARD, insert the bosses on the rear side of FRAME ASSY
BOTTOM into the left and right holes of PLATE ASSY RETARD, and attach
PLATE ASSY RETARD.
3. Attach HOLDER ASSY RETARD MSI. (p.313)
4. Attach ROLL MSI. (p.308)
5. Attach CHUTE MSI. (p.309)
6. Attach FRAME ASSY-PH. (p.327) [1)]

[2)-1]

[2)-1] [2)-2]
Leg_Sec03_509EA

Figure 4-34. Reinstallation of PLATE ASSY RETARD

DISASSEMBLY AND ASSEMBLY MSI 316

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 EPSON AcuLaser C1100 Revision B

4.3.9 OIL DAMPER

REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Remove COVER ASSY LH. (p.295)
3. Remove COVER MSI. (p.291)
4. Remove COVER FRONT L and COVER FRONT ASSY U. (p.292)
5. Remove FRAME ASSY-PH. (p.327)
6. Remove MSI ASSY. (p.304) 7)-1
7. Unhook the hook on GEAR PICK UP fastened to SHAFT ASSY MSI from MSI 9)
ASSY, and remove GEAR PICK UP.
8. Remove the 2 screws (silver, with flange, tapping, 8 mm) fastening DAMPER
BRACKET to the MSI ASSY. 8)
7)-2
9. Remove OIL DAMPER together with DAMPER BRACKET from MSI ASSY.
10. Remove OIL DAMPER from DAMPER BRACKET.
8)

10)

Leg_Sec03_200FA
Figure 4-35. Removal of OIL DAMPER

DISASSEMBLY AND ASSEMBLY MSI 317

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

C A U T IO N When performing the following work, pay attention to the

attachment direction of OIL DAMPER.

1. Match the hole on OIL DAMPER with the boss on DAMPER BRACKET, and
attach OIL DAMPER to DAMPER BRACKET.
2. Match the hole on DAMPER BRACKET with the boss on MSI ASSY, and attach
OIL DAMPER together with DAMPER BRACKET.
3. Fasten DAMPER BRACKET to MSI ASSY with the 2 screws (silver, with flange,
tapping, 8 mm).
4. Attach GEAR PICK UP to SHAFT ASSY MSI, and fasten the hook on GEAR
PICK UP to the groove on SHAFT ASSY MSI.
5. Attach MSI ASSY. (p.304)
6. Attach FRAME ASSY-PH. (p.327)
7. Attach COVER FRONT L and COVER FRONT ASSY U. (p.292)
8. Attach COVER MSI. (p.291)
9. Attach COVER ASSY LH. (p.295)
10. Attach COVER ASSY RH. (p.301)

DISASSEMBLY AND ASSEMBLY MSI 318

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 EPSON AcuLaser C1100 Revision B

4.3.10 SOLENOID PICK UP

REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Remove COVER ASSY LH. (p.295)
3. Remove COVER MSI. (p.291)
4. Remove COVER FRONT L and COVER FRONT ASSY U. (p.292)
5. Remove FRAME ASSY-PH. (p.327)
6. Remove MSI ASSY. (p.304)
7. Unhook the hook on GEAR PICK UP fastened to SHAFT ASSY MSI from MSI 7)-1
ASSY, and remove GEAR PICK UP.

When performing the following work, leave the intermediate 10)

C A U T IO N
connector on the harness side.
9) 8) 7)-2

8. Disconnect connector (P/J605) from SOLENOID PICK UP, and remove the
harness from the groove on MSI ASSY.
9. Remove the screw (silver, tapping, 8mm) fastening SOLENOID PICK UP to MSI
ASSY.
10. Remove SOLENOID PICK UP from MSI ASSY.
[3)]

Groove
Notch
Leg_Sec03_050FA

Figure 4-36. Removal of SOLENOID PICK UP

DISASSEMBLY AND ASSEMBLY MSI 319

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

1. Match the hole on SOLENOID PICK UP with the boss on MSI ASSY, and attach
SOLENOID PICK UP.
2. Fasten SOLENOID PICK UP to MSI ASSY with the screw (silver, tapping,
8mm).
3. Connect connector (P/J605) to SOLENOID PICK UP, and route the harness in the
notch and groove on MSI ASSY.
4. Attach GEAR PICK UP to SHAFT ASSY MSI while pulling the lever on
SOLENOID PICK UP, and fasten the hook on GEAR PICK UP to the groove on
SHAFT ASSY MSI.
5. Attach MSI ASSY. (p.304)
6. Attach FRAME ASSY-PH. (p.327)
7. Attach COVER FRONT L and COVER FRONT ASSY U. (p.292)
8. Attach COVER MSI. (p.291)
9. Attach COVER ASSY LH. (p.295)
10. Attach COVER ASSY RH. (p.301)

DISASSEMBLY AND ASSEMBLY MSI 320

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 EPSON AcuLaser C1100 Revision B

4.3.11 SENSOR PAPER EMPTY

REMOVAL
7)-1
1. Remove COVER ASSY RH. (p.301)
2. Remove COVER ASSY LH. (p.295)
3. Remove COVER MSI. (p.291) 7)-2
4. Remove COVER FRONT L and COVER FRONT ASSY U. (p.292)
5. Remove FRAME ASSY-PH. (p.327)
6. Remove MSI ASSY. (p.304)
7. Unhook the three hooks on SENSOR PAPER EMPTY fastened to FRAME ASSY
BOTTOM using a small screwdriver or similar tool, and turn ACTUATOR
EMPTY to remove SENSOR PAPER EMPTY.
8. Disconnect connector (P/J103) from SENSOR PAPER EMPTY.

REINSTALLATION

1. Connect connector (P/J103) to SENSOR PAPER EMPTY.

2. Turn ACTUATOR EMPTY to align the three hooks on SENSOR PAPER
EMPTY to the attachment position, and attach SENSOR PAPER EMPTY to
FRAME ASSY BOTTOM.
3. Attach MSI ASSY. (p.304)
4. Attach FRAME ASSY-PH. (p.327) 7)-3
5. Attach COVER FRONT L and COVER FRONT ASSY U. (p.292) 8)
6. Attach COVER MSI. (p.291)
7. Attach COVER ASSY LH. (p.295) Leg_Sec03_051FA

8. Attach COVER ASSY RH. (p.301) Figure 4-37. Removal of SENSOR PAPER EMPTY

DISASSEMBLY AND ASSEMBLY MSI 321

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 EPSON AcuLaser C1100 Revision B

4.3.12 ACTUATOR EMPTY 11. Remove the groove on the left-side shaft on ACTUATOR EMPTY from the hook
on MSI ASSY, and draw out the right-side shaft on ACTUATOR EMPTY from
C A U T IO N Step numbers with [ ] in the figure indicate the step of the hole on MSI ASSY.
reinstallation.
12. Slide ACTUATOR EMPTY to the left, slide the shaft of ACTUATOR EMPTY
along the notch of MSI ASSY, and remove ACTUATOR EMPTY.

REMOVAL

1. Remove COVER ASSY RH. (p.301) 9) 10)

2. Remove COVER ASSY LH. (p.295) 9)
3. Remove COVER MSI. (p.291)
4. Remove COVER FRONT L and COVER FRONT ASSY U. (p.292)
5. Remove FRAME ASSY-PH. (p.327)
6. Remove MSI ASSY. (p.304)
7. Remove GUIDE SIDE L and GUIDE ASSY SIDE R. (p.310)

C H E C K When performing the following work, connectors need not be

P O IN T disconnected from SENSOR PAPER EMPTY.

8. Remove SENSOR PAPER EMPTY. (p.321)

9. Remove the holes on PLATE BOTTOM 2 from the boss on PLATE BOTTOM
ASSY MSI while extending the attachment sections on the left and right of
PLATE BOTTOM 2.
10. Turn PLATE BOTTOM 2, remove the bosses on the left and right of PLATE
BOTTOM 2 from the notches of MSI ASSY, and remove PLATE BOTTOM 2.

C A U T IO N When performing the following work, take care not to fold

ACTUATOR EMPTY. Leg_Sec03_052FB
Figure 4-38. Removal of ACTUATOR EMPTY (1)

DISASSEMBLY AND ASSEMBLY MSI 322

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION
11)-1
1. Slide the actuator of ACTUATOR EMPTY into the clearance of MSI ASSY, slide 11)-2
the shaft on ACTUATOR EMPTY along the notch on MSI ASSY, and attach
ACTUATOR EMPTY.
2. Insert the right-side shaft of ACTUATOR EMPTY into the hole on MSI ASSY, [2)]
and fasten the groove on the left-side shaft of ACTUATOR EMPTY to the hook
on MSI ASSY.

Make sure that ACTUATOR EMPTY is firmly fastened to the CAUTION

C A U T IO N
hook.

3. Insert the left and right bosses into the notch on MSI ASSY with PLATE
BOTTOM 2 raised 90°, and attach PLATE BOTTOM 2.
4. Insert the holes of PLATE BOTTOM 2 into the boss on PLATE BOTTOM ASSY
MSI while extending the left and right attachment sections of PLATE BOTTOM
2. 12)
5. Attach SENSOR PAPER EMPTY. (p.321)
6. Attach GUIDE SIDE L and GUIDE ASSY SIDE R. (p.310)
7. Attach MSI ASSY. (p.304)
8. Attach FRAME ASSY-PH. (p.327)
9. Attach COVER FRONT L and COVER FRONT ASSY U. (p.292)
10. Attach COVER MSI. (p.291)
11. Attach COVER ASSY LH. (p.295)
12. Attach COVER ASSY RH. (p.301)

Leg_Sec03_053FB
Figure 4-39. Removal of ACTUATOR EMPTY (2)

DISASSEMBLY AND ASSEMBLY MSI 323

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 EPSON AcuLaser C1100 Revision B

4.4 PH ASSY

4.4.1 COVER-PH 2)-1 2)-1

1)
REMOVAL

1. Open COVER-PH.
2. Unhook the hooks on both the left and right sides fastening COVER-PH to
CHUTE ASSY-REAR, and remove COVER-PH.

REINSTALLATION

1. Match the two hooks under COVER-PH with CHUTE ASSY-REAR, attach
COVER-PH, and fasten with the hooks on both the left and right sides.
2. Close COVER-PH.

2)-2

Leg_Sec03_142EA
Figure 4-40. Removal of COVER-PH

DISASSEMBLY AND ASSEMBLY PH ASSY 324

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 EPSON AcuLaser C1100 Revision B

4.4.2 CHUTE ASSY-REAR

C A U T IO N Step numbers with [ ] in the figure indicate the step of
reinstallation.

REMOVAL

1. In the case of the DUPLEX specification, remove DUPLEX ASSY. (p.412)

2. In the case of the standard specification, remove COVER-PH. (p.324)
3. Open CHUTE ASSY-REAR.

C A U T IO N When performing the following work, take care not to damage the
CHUTE ASSY-REAR boss. 4)-2

4. Bend the attachment section on the right side of CHUTE ASSY-REAR with a
small screwdriver or similar tool, remove the right-side boss from the hole on
FRAME-PH, and remove CHUTE ASSY-REAR.

REINSTALLATION

C A U T IO N When performing the following work, take care not to damage the 4)-1 [1)]
CHUTE ASSY-REAR boss.

1. Insert the left-side boss on CHUTE ASSY-REAR into the hole on the left side of
FRAME-PH, insert the right-side boss on CHUTE ASSY-REAR into the hole on Leg_Sec03_055EA
the right side of FRAME-PH so that it slides in from a diagonal direction, and Figure 4-41. Removal of CHUTE ASSY-REAR
attach CHUTE ASSY-REAR.
2. Close CHUTE ASSY-REAR.
3. In the case of the standard specification, attach COVER-PH. (p.324)
4. In the case of the DUPLEX specification, attach DUPLEX ASSY. (p.412)

DISASSEMBLY AND ASSEMBLY PH ASSY 325

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 EPSON AcuLaser C1100 Revision B

4.4.3 CHUTE-REAR UP, CHUTE-REAR LOW 2)

C A U T IO N Step numbers with [ ] in the figure indicate the step of
reinstallation. 3)-2
2)

REMOVAL

1. Remove CHUTE ASSY-REAR. (p.325)

2. Remove the 2 screws (silver, with flange, tapping, 8 mm) fastening CHUTE-
REAR LOW to CHUTE-REAR UP.
3. Remove the concave portion on CHUTE-REAR LOW from the protrusion on
CHUTE-REAR UP, and remove CHUTE-REAR LOW from CHUTE-REAR UP.

REINSTALLATION

1. Match the hole on CHUTE-REAR LOW with the boss on CHUTE-REAR UP, and [1)]
insert the protrusion on CHUTE-REAR UP into the concave portion on CHUTE-
3)-1
REAR LOW to attach.

C A U T IO N The protrusion on CHUTE REAR UP must be inserted firmly into

the concave portion on CHUTE-REAR LOW. CAUTION
Leg_Sec03_056FA
Figure 4-42. Removal of CHUTE-REAR UP and CHUTE-REAR LOW

2. Fasten CHUTE-REAR LOW to CHUTE-REAR UP with the 2 screws (silver, with

flange, tapping, 8 mm).
3. Attach CHUTE ASSY-REAR. (p.325)

DISASSEMBLY AND ASSEMBLY PH ASSY 326

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 EPSON AcuLaser C1100 Revision B

4.4.4 FRAME ASSY-PH 3)

C A U T IO N Step numbers with [ ] in the figure indicate the step of
reinstallation.

REMOVAL

1. In the case of the DUPLEX specification, remove DUPLEX ASSY. (p.412)

2. In the case of the standard specification, remove COVER-PH. (p.324) 4)
3. Open CHUTE ASSY-REAR.
4) 4)
4. Remove the 4 screws (silver, with flange, 8 mm) fastening FRAME ASSY-PH to
the main unit.
5. Close CHUTE ASSY-REAR. 4)

C A U T IO N When performing the following work, take care not to remove

FRAME ASSY-PH too far as it is connected by a harness.

6. Slightly remove FRAME ASSY-PH together with CHUTE ASSY-REAR from the
main unit.
6)
7. Disconnect connector (P/J603) and connector (P/J604) connected to the main unit,
and remove FRAME ASSY-PH together with CHUTE ASSY-REAR.
8. Remove CHUTE ASSY-REAR. (p.325)

8) 7)
Leg_Sec03_057EA
Figure 4-43. Removal of FRAME ASSY-PH

DISASSEMBLY AND ASSEMBLY PH ASSY 327

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

1. Attach CHUTE ASSY-REAR. (p.325)

2. Turn FRAME ASSY-PH 90° in the direction of the arrow, and connect connector
(P/J603) and connector (P/J604) connected to the main unit.

C A U T IO N When performing the following work, take care to prevent the

harness from being sandwiched between the main unit and FRAME
ASSY-PH.
[2)]
3. Open CHUTE ASSY-REAR. [4)-2]

4. While pushing down the film part of the HOLDER ASSY RETARD MSI, match
FRAME ASSY-PH with the attachment position of the main unit.
[4)-1] Leg_03_510EB
C A U T IO N Make sure to confirm that the film part of the HOLDER ASSY
RETARD MSI is located lateral to the FRAME ASSY-PH after
installing the FRAME ASSY-PH to the main unit. If the film part
gets through the inside of the FRAME ASSY-PH, a paper jam is
occurred by blocking a paper feeding path. (See Figure 4-45)
5. Fasten FRAME ASSY-PH to the main unit with the 4 screws (silver, with flange,
8 mm).
6. Close CHUTE ASSY-REAR. Figure 4-44. Reinstallation of FRAME ASSY-PH

7. In the case of the standard specification, attach COVER-PH. (p.324)

8. In the case of the DUPLEX specification, attach DUPLEX ASSY. (p.412) OK NG

Film part HOLDER ASSY RETARD MSI

Figure 4-45. Check point after installing FRAME ASSY-PH

DISASSEMBLY AND ASSEMBLY PH ASSY 328

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 EPSON AcuLaser C1100 Revision B

4.4.5 CLUTCH ASSY REGI [3)-2]

C A U T IO N Step numbers with [ ] in the figure indicate the step of
reinstallation.

REMOVAL
[3)-1]
1. Remove FRAME ASSY-PH. (p.327)
2. Remove MOTOR-PH. (p.337)
3. Remove DRIVE ASSY-PH. (p.340)

C A U T IO N When performing the following work, leave the intermediate 4)

connector on the harness side. 6)

4. Disconnect the connector (P/J203) from CLUTCH ASSY REGI, and remove the
harness of CLUTCH ASSY REGI from the groove on FRAME ASSY-PH. 5)
5. Remove the E-ring fastening CLUTCH ASSY REGI to FRAME ASSY-PH.
6. Remove CLUTCH ASSY REGI from FRAME ASSY-PH.

REINSTALLATION

1. Match the hole position of CLUTCH ASSY REGI with the D cut surface on the Leg_Sec03_058FA

shaft of ROLL-REGI METAL, and attach CLUTCH ASSY REGI so that the Figure 4-46. Removal of CLUTCH ASSY REGI
protrusion of FRAME ASSY-PH enters the concave portion on CLUTCH ASSY
REGI.
2. Fasten CLUTCH ASSY REGI to FRAME ASSY-PH with the E-ring.
3. Route the harness of CLUTCH ASSY REGI in the groove on FRAME ASSY-PH,
and connect the connector (P/J203) to CLUTCH ASSY REGI.
4. Attach DRIVE ASSY-PH. (p.340)
5. Attach MOTOR-PH. (p.337)
6. Attach FRAME ASSY-PH. (p.327)

DISASSEMBLY AND ASSEMBLY PH ASSY 329

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 EPSON AcuLaser C1100 Revision B

4.4.6 ROLL-REGI METAL 7)

8)
REMOVAL

1. Remove FRAME ASSY-PH. (p.327)

2. Remove MOTOR-PH. (p.337)
3. Remove DRIVE ASSY-PH. (p.340)
4. Remove CLUTCH ASSY REGI. (p.329) 6)
5. Remove the two E-rings fastening GEAR-REGI from FRAME ASSY-PH, and
remove the two GEAR-REGIs.
6) 5)-1
6. Remove the left and right BEARING METALs fastening ROLL-REGI METAL
from FRAME ASSY-PH.
7. Open CHUTE ASSY-REAR.
8. Temporarily slide ROLL-REGI METAL to the left, draw out the shaft on ROLL- 5)-2
REGI METAL from the right-side bearing on FRAME ASSY-PH, and remove
ROLL-REGI METAL.
Leg_Sec03_059FB
Figure 4-47. Removal of ROLL-REGI METAL

REINSTALLATION

1. Insert the shaft left side on ROLL-REGI METAL into the left-side bearing on
FRAME ASSY-PH, and slide ROLL-REGI METAL to the right to attach.
2. Close CHUTE ASSY-REAR.
3. Match the double D cut surface of BEARING METAL with the left and right
bearings of FRAME ASSY-PH, attach BEARING METAL, and fasten ROLL-
REGI METAL.
4. Attach GEAR-REGI to the right side of the shaft on ROLL-REGI METAL and the
right side of the shaft on ROLL REGI RUBBER, and fasten with the E-ring.
5. Attach CLUTCH ASSY REGI. (p.329)
6. Attach DRIVE ASSY-PH. (p.340)
7. Attach MOTOR-PH. (p.337)
8. Attach FRAME ASSY-PH. (p.327)

DISASSEMBLY AND ASSEMBLY PH ASSY 330

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 EPSON AcuLaser C1100 Revision B

4.4.7 ROLL REGI RUBBER

REMOVAL

1. Remove FRAME ASSY-PH. (p.327)

2. Remove MOTOR-PH. (p.337)
3. Remove DRIVE ASSY-PH. (p.340)
8)
4. Remove CLUTCH ASSY REGI. (p.329)
5. Remove the E-ring fastening GEAR-REGI on ROLL REGI RUBBER from
(BLACK)
FRAME ASSY-PH, and remove GEAR-REGI.
6. Remove the right-side BEARING RUBBER and SPRING-REGI R (METAL)
7)-2
fastening ROLL REGI RUBBER from FRAME ASSY-PH.
D cut surface
7. Remove the E-ring fastening ROLL REGI RUBBER from FRAME ASSY-PH,
and BEARING RUBBER and SPRING-REGI L (BLACK) on the left side. (METAL) 7)-1
8. Temporarily slide ROLL REGI RUBBER to the left, draw out the shaft on ROLL
6)-2
REGI RUBBER from the right-side bearing on FRAME ASSY-PH, and remove
ROLL REGI RUBBER.

6)-1
5)-2 Leg_Sec03_060FB
5)-1 RIGHT
Figure 4-48. Removal of ROLL REGI RUBBER

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

C A U T IO N Attach ROLL REGI RUBBER to FRAME ASSY-PH so that the D

cut surface of the shaft comes to the right side.

1. Insert the shaft left side on ROLL REGI RUBBER into the left-side bearing on
FRAME ASSY-PH, and slide ROLL REGI RUBBER to the right to attach.
2. Fasten ROLL REGI RUBBER to FRAME ASSY-PH by the left and right
BEARING RUBBER.

C A U T IO N When performing the following work, take care not to attach

SPRING-REGI R (METAL) and SPRING-REGI L (BLACK) to
the wrong side (not to confuse left and right).

3. Attach SPRING-REGI R (METAL) to the boss on the right-side BEARING

RUBBER and the boss on the right-side bearing of FRAME ASSY-PH fastening
ROLL REGI RUBBER.
4. Attach SPRING-REGI L (BLACK) to the boss on the left-side BEARING
RUBBER and the boss on the left-side bearing of FRAME ASSY-PH fastening
ROLL REGI RUBBER.

C A U T IO N Make sure that SPRING-REGI R (METAL) and SPRING-REGI L

(BLACK) are inserted in the boss on the left and right BEARING
RUBBER and the bearing on FRAME ASSY-PH.

5. Attach GEAR-REGI to the right side of the shaft on ROLL REGI RUBBER, and
fasten with the two E-rings on the left and right of the shaft.
6. Attach CLUTCH ASSY REGI. (p.329)
7. Attach DRIVE ASSY-PH. (p.340)
8. Attach MOTOR-PH. (p.337)
9. Attach FRAME ASSY-PH. (p.327)

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 EPSON AcuLaser C1100 Revision B

4.4.8 ROLL ASSY-PRE REGI 5. Attach CLUTCH ASSY PRE REGI. (p.338)
6. Attach DRIVE ASSY-PH. (p.340)
REMOVAL
7. Attach MOTOR-PH. (p.337)
1. Remove FRAME ASSY-PH. (p.327) 8. Attach FRAME ASSY-PH. (p.327)
2. Remove MOTOR-PH. (p.337)
7)
3. Remove DRIVE ASSY-PH. (p.340)
4. Remove CLUTCH ASSY PRE REGI. (p.338)
D cut surface
8)
5. Remove the E-rings fastening the right side of the shaft on ROLL ASSY-PRE
REGI from FRAME ASSY-PH.
6. Remove the left and right BEARING METALs fastening ROLL ASSY-PRE
REGI from FRAME ASSY-PH.
6)
7. Open CHUTE ASSY-REAR.
8. Temporarily slide ROLL ASSY-PRE REGI to the left, draw out the shaft on
ROLL ASSY-PRE REGI from the right-side bearing on FRAME ASSY-PH, and 6)
remove ROLL ASSY-PRE REGI.
5)

REINSTALLATION

C A U T IO N Attach ROLL ASSY-PRE REGI to FRAME ASSY-PH so that the Leg_Sec03_061FB

D cut surface of the shaft comes to the left side.
Figure 4-49. Removal of ROLL ASSY-PRE REGI

1. Insert the shaft left side on ROLL ASSY-PRE REGI into the left-side bearing on
FRAME ASSY-PH, and slide ROLL ASSY-PRE REGI to the right to attach.
2. Close CHUTE ASSY-REAR.
3. Match the double D cut surface of BEARING METAL with the left and right
bearings of FRAME ASSY-PH, attach BEARING METAL, and fasten ROLL
ASSY-PRE REGI.
4. Fasten the shaft right side of ROLL ASSY-PRE REGI with an E-ring.

DISASSEMBLY AND ASSEMBLY PH ASSY 333

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 EPSON AcuLaser C1100 Revision B

4.4.9 SENSOR OHP 2)

3) 5) 6)
REMOVAL

1. Remove FRAME ASSY-PH. (p.327)

2. Remove the screw (silver, with flange, tapping, 8 mm) fastening BRACKET-
SENSOR OHP to FRAME ASSY-PH.

C A U T IO N When performing the following work, take care not to remove

FRAME ASSY-PH and BRACKET-SENSOR OHP too far as they
are connected by harnesses.

3. Remove BRACKET-SENSOR OHP together with SENSOR OHP from FRAME

ASSY-PH.
4. Disconnect connector (P/J101) from SENSOR OHP.
5. Remove the screw (silver, tapping, 8 mm) fastening SENSOR OHP to
BRACKET-SENSOR OHP.
6. Remove SENSOR OHP from BRACKET-SENSOR OHP. 4) Leg_Sec03_062FA
Figure 4-50. Removal of SENSOR OHP

REINSTALLATION

1. Match the boss on SENSOR OHP with the hole on BRACKET-SENSOR OHP,
and attach SENSOR OHP to BRACKET-SENSOR OHP.
2. Fasten SENSOR OHP to BRACKET-SENSOR OHP with the screw (silver,
tapping, 8 mm).
3. Connect connector (P/J101) to SENSOR OHP.
4. Match the hole on BRACKET-SENSOR OHP with the boss on FRAME ASSY-
PH, and attach BRACKET-SENSOR OHP together with SENSOR OHP.
5. Fasten BRACKET-SENSOR OHP to FRAME ASSY-PH with the screw (silver,
with flange, tapping, 8 mm).
6. Attach FRAME ASSY-PH. (p.327)

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 EPSON AcuLaser C1100 Revision B

4.4.10 ACTUATOR-REGI 2) CAUTION

C A U T IO N Step numbers with [ ] in the figure indicate the step of

reinstallation.
3)

4)
REMOVAL

1. Remove FRAME ASSY-PH. (p.327)

2. Remove the left-side shaft on ACTUATOR-REGI from the hook on FRAME
ASSY-PH.
3. Draw out the right-side shaft on ACTUATOR-REGI from the hole on FRAME
ASSY-PH, and remove ACTUATOR-REGI together with SPRING-ACTUATOR.
4. Remove SPRING-ACTUATOR from ACTUATOR-REGI.
[3)]

REINSTALLATION

1. Attach SPRING-ACTUATOR to ACTUATOR-REGI.

2. Insert the right-side shaft on ACTUATOR-REGI into the hole on FRAME ASSY-
PH, and hook SPRING-ACTUATOR onto the notch on FRAME ASSY-PH.
Leg_Sec03_064FA

C A U T IO N SPRING-ACTUATOR must be hooked firmly on ACTUATOR- Figure 4-51. Removal of ACTUATOR-REGI

REGI and FRAME ASSY-PH.

3. Fasten the left-side shaft on ACTUATOR-REGI by the hook on FRAME ASSY-

PH.
4. Attach FRAME ASSY-PH. (p.327)

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 EPSON AcuLaser C1100 Revision B

4.4.11 SENSOR REGI 4)-3

REMOVAL

1. Remove FRAME ASSY-PH. (p.327)

2. Remove MOTOR-PH. (p.337) 5)
3. Remove DRIVE ASSY-PH. (p.340)
4. Unhook the three hooks fastening SENSOR REGI to FRAME ASSY-PH, down 4)-1
ACTUATOR-REGI with your fingers press and remove SENSOR REGI.
5. Disconnect connector (P/J102) from SENSOR REGI.
4)-2

REINSTALLATION

1. Connect connector (P/J102) to SENSOR REGI.

2. Press down ACTUATOR-REGI with your fingers, match the hooks on SENSOR
REGI with the attachment position, and attach to FRAME ASSY-PH. Leg_Sec03_065FB
3. Attach DRIVE ASSY-PH. (p.340) Figure 4-52. Removal of SENSOR REGI
4. Attach MOTOR-PH. (p.337)
5. Attach FRAME ASSY-PH. (p.327)

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 EPSON AcuLaser C1100 Revision B

4.4.12 MOTOR-PH 5)
REMOVAL

1. Remove FRAME ASSY-PH. (p.327)

Front side
2. Unhook the two hooks fastening COVER-HARNESS to FRAME ASSY-PH, and
remove COVER-HARNESS. 3)
3. Unclamp the clamp on DRIVE ASSY-PH, and remove the harness of MOTOR-
PH from the groove on FRAME ASSY-PH.
4. Remove the 2 screws (silver, with flange, 6 mm) fastening MOTOR-PH to
FRAME ASSY-PH. 4)
5. Remove MOTOR-PH from FRAME ASSY-PH. 4)
3)
2)-1

2)-2
REINSTALLATION
2)-1

C A U T IO N When performing the following work, pay attention to the

attachment direction of MOTOR-PH.

Leg_Sec03_066FB
1. Attach MOTOR-PH to FRAME ASSY-PH with the harness of MOTOR-PH Figure 4-53. Removal of MOTOR-PH
facing the front.
2. Fasten MOTOR-PH to FRAME ASSY-PH with the 2 screws (silver, with flange,
6 mm).
3. Route the harness of MOTOR-PH in the groove on FRAME ASSY-PH, and fasten
with the clamp on DRIVE ASSY-PH.
4. Match the boss and protrusion of COVER-HARNESS with the hole on FRAME
ASSY-PH, attach and fasten with the 2 hooks.
5. Attach FRAME ASSY-PH. (p.327)

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 EPSON AcuLaser C1100 Revision B

4.4.13 CLUTCH ASSY PRE REGI 4. Route the harness of CLUTCH ASSY PRE REGI in the groove on FRAME
ASSY-PH, and connect the connector (P/J202) to CLUTCH ASSY PRE REGI.
C A U T IO N Step numbers with [ ] in the figure indicate the step of
5. Attach DRIVE ASSY-PH. (p.340)
reinstallation.
6. Attach MOTOR-PH. (p.337)
7. Attach FRAME ASSY-PH. (p.327)

REMOVAL

1. Remove FRAME ASSY-PH. (p.327)

2. Remove MOTOR-PH. (p.337)
3. Remove DRIVE ASSY-PH. (p.340)

C A U T IO N When performing the following work, do not disconnect the relay

connectors.
[4)]

4. Disconnect the connector (P/J202) from CLUTCH ASSY REGI, and remove the 4)
harness of CLUTCH ASSY REGI from the groove on FRAME ASSY-PH.
5. Remove the E-rings fastening CLUTCH ASSY PRE REGI to FRAME ASSY-PH. 6)
6. Remove CLUTCH ASSY PRE REGI from FRAME ASSY-PH, and remove the
harness of CLUTCH ASSY PRE REGI from the hole on FRAME ASSY-PH.
5)

REINSTALLATION

1. Insert the harness of CLUTCH ASSY PRE REGI into the hole on FRAME ASSY- Leg_Sec03_067FA
PH. Figure 4-54. Removal of CLUTCH ASSY PRE REGI
2. Match the hole position of CLUTCH ASSY PRE REGI with the D cut surface on
the shaft of ROLL ASSY-PRE REGI, and attach CLUTCH ASSY PRE REGI so
that the protrusion on FRAME ASSY-PH enters the concave portion on CLUTCH
ASSY PRE REGI.
3. Fasten CLUTCH ASSY PRE REGI to FRAME ASSY-PH with an E-ring.

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 EPSON AcuLaser C1100 Revision B

4.4.14 SWITCH-PH DOOR

REMOVAL

1. Remove FRAME ASSY-PH. (p.327)

2. Disconnect connector (P/J100) from SWITCH-PH DOOR.
4)-1
3. Open CHUTE ASSY-REAR.
4. Unhook the two hooks fastening SWITCH-PH DOOR to FRAME ASSY-PH, and
remove SWITCH-PH DOOR.

REINSTALLATION
2)
1. Open CHUTE ASSY-REAR.
4)-2
2. Match the hooks on SWITCH-PH DOOR with the attachment position, and attach 3)
to FRAME ASSY-PH.
3. Connect connector (P/J100) to SWITCH-PH DOOR. Leg_Sec03_068FC

4. Attach FRAME ASSY-PH. (p.327) Figure 4-55. Removal of SWITCH-PH DOOR

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 EPSON AcuLaser C1100 Revision B

4.4.15 DRIVE ASSY-PH

REMOVAL
CLUTCH ASSY REGI
5)
1. Remove FRAME ASSY-PH. (p.327)
2. Remove MOTOR-PH. (p.337)
3. Unclamp the clamp on DRIVE ASSY-PH, and remove the harness.
4. Remove the 2 screws (silver, with flange, tapping, 8 mm) fastening DRIVE
ASSY-PH to FRAME ASSY-PH.
5. Remove DRIVE ASSY-PH from FRAME ASSY-PH.
3)
4) 4)
Leg_Sec03_069FA
REINSTALLATION

CLUTCH ASSY PRE REGI

C A U T IO N When performing the following work, make sure that the gears on
CLUTCH ASSY REGI and CLUTCH ASSY PRE REGI are Figure 4-56. Removal of DRIVE ASSY-PH
correctly engaged.

1. Match the hole on DRIVE ASSY-PH with the boss on FRAME ASSY-PH, and
attach DRIVE ASSY-PH.
2. Fasten DRIVE ASSY-PH to FRAME ASSY-PH with the 2 screws (silver, with
flange, tapping, 8 mm).
3. Fasten the harness with the clamp on DRIVE ASSY-PH.
4. Attach MOTOR-PH. (p.337)
5. Attach FRAME ASSY-PH. (p.327)

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 EPSON AcuLaser C1100 Revision B

4.5 TRANSFER

4.5.1 CHUTE ASSY-FSR, COVER ASSY-RR 2ND

REMOVAL

† CHUTE ASSY-FSR.

1. Open CHUTE ASSY-FSR.

C A U T IO N When performing the following work, take care not to remove

CHUTE ASSY-FSR too far as it is connected by a harness.

1)

2. Press the hinge on CHUTE ASSY-FSR to the inside with a flat-blade screwdriver 2)-2
or a similar tool, and remove CHUTE ASSY-FSR from the main unit.

C A U T IO N When performing the following work, leave the intermediate

connector on the harness side.
3)

3. Disconnect the connector (P/J620) from CHUTE ASSY-FSR connected to the 2)-1 2)-1
main unit.

C H E C K When HARNESS ASSY 2BTR SW need not be removed in the

P O IN T following procedure, COVER ASSY-RR 2ND can be removed
without removing COVER ASSY LH by disconnecting connector Protrusion Protrusion
Leg_Sec03_511EC
(P/J113) from SWITCH 2BTR COVER instead of connector (P/
J621). Figure 4-57. Removal of CHUTE ASSY-FSR

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† COVER ASSY-RR 2ND

6)-1
1. Remove COVER ASSY LH. (p.295)
2. Unclamp the clamp fastening the harness of COVER ASSY-RR 2ND, and remove
the harness.

C A U T IO N When performing the following work, leave the intermediate

5)
connector on the harness side.

3. Disconnect connector (P/J621) connected to the main unit, and insert the
connector inside through the hole on the main unit.
4. Remove the 2 screws (silver, with flange, 8 mm) fastening COVER ASSY-RR
2ND to the main unit.
5. Remove COVER ASSY-RR 2ND from the main unit.

6)-2
7)

8) 7)

CAUTION

Leg_Sec03_143EB
Figure 4-58. Removal of COVER ASSY-RR 2ND

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

† COVER ASSY-RR 2ND

C A U T IO N When performing the following work, take care to prevent the

harness from being sandwiched between the main unit and COVER
ASSY-RR 2ND.

1. Lead out the connector of the harness of COVER ASSY-RR 2ND from the hole on
the main unit.
2. Match the boss on COVER ASSY-RR 2ND with the hole on the main unit, and
attach COVER ASSY-RR 2ND.
3. Lead out the relay connector connected to the connector on CHUTE ASSY-FSR to
the outside from the left-side notch on COVER ASSY-RR 2ND.
4. Fasten COVER ASSY-RR 2ND to the main unit with the 2 screws (silver, with
flange, 8 mm).
5. Connect connector (P/J621) on the harness of COVER ASSY-RR 2ND to the
main unit, and fasten the harness by the clamp.
† CHUTE ASSY-FSR.

1. Attach the connector (P/J620) on CHUTE ASSY-FSR connected to the main unit,
and insert the connector into the main unit from the left-side notch on COVER
ASSY-RR 2ND.
2. Fit the U groove on the both the left- and right-side hinges of CHUTE ASSY-FSR
into the shaft on CAM ASSY-2ND, and attach CHUTE ASSY-FSR to the main
unit.
3. Close CHUTE ASSY-FSR.
4. Attach COVER ASSY LH. (p.295)

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 EPSON AcuLaser C1100 Revision B

4.5.2 SENSOR FUSER IN 2)

3) 2)
REMOVAL

1. Remove CHUTE ASSY-FSR. (p.341) 5)

4)
2. Remove the 2 screws (silver, with washer, tapping, 8 mm) fastening DIODE
FUSER to CHUTE ASSY-FSR.
3. Remove DIODE FUSER from CHUTE ASSY-FSR.
4. Remove the screw (silver, with washer, tapping, 8 mm) fastening CHUTE-FSR
and PLATE DIS 2ND to CHUTE ASSY-FSR.
5. Remove PLATE DIS 2ND from CHUTE ASSY-FSR.
6)
6. Remove CHUTE-FSR from CHUTE ASSY-FSR.
7. Disconnect connector (P/J111) from SENSOR FUSER IN.
8. Remove the screw (silver, tapping, 6 mm) fastening SENSOR FUSER IN to
CHUTE ASSY-FSR.
9. Remove SENSOR FUSER IN from CHUTE ASSY-FSR.

CAUTION

Leg_Sec03_144FB
Figure 4-59. Removal of SENSOR FUSER IN (1)

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION 9)
8) 7)
1. Match the boss on SENSOR FUSER IN with the hole on CHUTE ASSY-FSR, and
attach SENSOR FUSER IN.
2. Fasten SENSOR FUSER IN to CHUTE ASSY-FSR with the screw (silver,
tapping, 6 mm).
3. Connect connector (P/J111) to SENSOR FUSER IN.
4. Insert the three protrusions on CHUTE-FSR into the holes on CHUTE ASSY-
FSR, match the holes on CHUTE-FSR with the boss on CHUTE ASSY-FSR, and
attach CHUTE-FSR.
5. Attach PLATE DIS 2ND to CHUTE ASSY-FSR.
Leg_Sec03_145FA
6. Tighten and fasten both CHUTE-FSR and the right side of PLATE DIS 2ND to
CHUTE ASSY-FSR with the screw (silver, with washer, tapping, 8 mm). Figure 4-60. Removal of SENSOR FUSER IN (2)

C A U T IO N When performing the following work, pay attention to the

attachment direction of DIODE FUSER.
Attach so that the white painted side of DIODE FUSER is on the
side where DIODE FUSER is screwed together with CHUTE-FSR.

7. Match DIODE FUSER with the concave portion on CHUTE ASSY-FSR, and
attach.

C A U T IO N When performing the following work, the terminal on DIODE

FUSER must be attached between the washer and the plate.

8. Fasten the right-side terminal of DIODE FUSER to CHUTE ASSY-FSR with the
screw (silver, with washer, tapping, 8 mm).
9. Fasten both the left-side terminal of DIODE FUSER and the left side of PLATE
DIS 2ND to CHUTE ASSY-FSR with the screw (silver, with washer, tapping, 8
mm).
10. Attach CHUTE ASSY-FSR. (p.341)

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 EPSON AcuLaser C1100 Revision B

4.5.3 FRAME ASSY-2ND

C A U T IO N Step numbers with [ ] in the figure indicate the step of
reinstallation.

REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Remove CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)
3. Remove 2ND BTR ASSY. (p.348)
4. Remove PLATE BIAS-2ND ASSY. (p.358)
5. Remove CAM ASSY-2ND. (p.350)
6. Remove SPRING-2ND fastening both the left and right sides of FRAME ASSY-
2ND to the main unit.
7. Remove the E-ring fastening the right-side shaft on FRAME ASSY-2ND to the 6)
main unit, and slide BEARING-BRUSH CAM to the left.

C A U T IO N When performing the following work, take care not to drop or lose 6)
BEARING-BRUSH CAM.

8. Temporarily slide FRAME ASSY-2ND to the right, and draw out the shaft on CAUTION CAUTION
FRAME ASSY-2ND from the left-side bearing on the main unit, and remove
FRAME ASSY-2ND together with BEARING-BRUSH CAM. Leg_Sec03_146EB

9. Remove BEARING-BRUSH CAM from FRAME ASSY-2ND. Figure 4-61. Removal of FRAME ASSY-2ND (1)

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REINSTALLATION 7)-2
1. Attach BEARING-BRUSH CAM to the left-side bearing on the main unit.
2. Attach BEARING-BRUSH CAM to the right-side shaft on FRAME ASSY-2ND.
3. Insert the right-side shaft on FRAME ASSY-2ND into the right-side bearing on 7)-1
the main unit, slide FRAME ASSY-2ND to the left, insert the flange of GEAR 27
on FRAME ASSY-2ND as far as possible into the gear of DRIVE ASSY BTR,
and attach FRAME ASSY-2ND.
4. Insert the right-side BEARING-BRUSH CAM on FRAME ASSY-2ND into the
right-side bearing on the main unit, and fasten with an E-ring.

C A U T IO N When performing the following work, firmly hook SPRING-2ND

onto the concave portion on FRAME ASSY-2ND.

5. Fasten both the left and right sides of FRAME ASSY-2ND to the main unit with
SPRING-2ND. 9)
6. Attach CAM ASSY-2ND. (p.350)
9)
7. Attach PLATE BIAS-2ND ASSY. (p.358)
8. Attach 2ND BTR ASSY. (p.348) 8)
9. Attach CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)
10. Attach COVER ASSY RH. (p.301)

[3)]
[1)]
Leg_Sec03_147EB
Figure 4-62. Removal of FRAME ASSY-2ND (2)

DISASSEMBLY AND ASSEMBLY TRANSFER 347

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 EPSON AcuLaser C1100 Revision B

4.5.4 2ND BTR ASSY

REMOVAL

1. Open COVER ASSY TOP.

3) CAUTION
2. Remove Photoconductor Unit.

C A U T IO N When performing the following work, press LATCH ROTARY on

LATCH ASSY ROTARY to release the latch, turn FRAME ASSY- 3)
ROTARY by hand, and move HOUSING ASSY-DEVE to prevent
it from contacting MAG ROLL.

3. Turn the levers on both the left and right sides of 2ND BTR ASSY towards you, 4)-2
and unlock the lever lock from FRAME ASSY-2ND.
4. Hold the lever on 2ND BTR ASSY, draw out the right side of 2ND BTR ASSY
from FRAME ASSY-2ND, and then draw out the left side to remove 2ND BTR
4)-3
ASSY from the main unit.
4)-1

Leg_Sec03_070EA
Figure 4-63. Removal of 2ND BTR ASSY

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REINSTALLATION

C A U T IO N „ When performing the following work, press LATCH

ROTARY on LATCH ASSY ROTARY to release the latch,
turn FRAME ASSY-ROTARY by hand, and move
HOUSING ASSY-DEVE to prevent it from contacting MAG
ROLL.
„ When performing the following work, the right-side shaft on
2ND BTR ASSY must be inserted into the bottom side of the
terminal on PLATE BIAS-2ND ASSY.
1. Insert the left-side gear on 2ND BTR ASSY into the main unit, and then fit the left
and right bearings on 2ND BTR ASSY into FRAME ASSY-2ND to attach 2ND
BTR ASSY.

C A U T IO N After attaching 2ND BTR ASSY, make sure that the levers on both
the left and right sides move smoothly up and down.

2. Turn the levers on both the left and right sides of 2ND BTR ASSY down, and
make FRAME ASSY-2ND lock the lever.
3. Attach Photoconductor Unit.
4. Close COVER ASSY TOP.

C A U T IO N When replaced 2ND BTR ASSY with a new one, clear the life
counter to zero. (Refer to “6.3.1 Maintenance Menu Items” (p497))

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4.5.5 CAM ASSY-2ND

6)-2 7)-1 7)-1
REMOVAL

1. Remove COVER ASSY RH. (p.301)

6)-1 CAUTION CAUTION
2. Remove CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)
3. Remove 2ND BTR ASSY. (p.348)

C A U T IO N When performing the following work, there is no need to remove

WIRE ASSY 2BTR from PLATE BIAS-2ND ASSY.

4. Remove PLATE BIAS-2ND ASSY. (p.358)

C A U T IO N When performing the following work, there is no need to remove

SENSOR 2BTR RETRACT from BRACKET-SENSOR PHOTO.

8)
5. Remove SENSOR 2BTR RETRACT. (p.356)

C A U T IO N When performing the following work, take care not to drop or lose 7)-2
BEARING. 8)
CAUTION
RIGHT
6. Remove the E-ring fastening the right-side shaft on CAM ASSY-2ND to the main
unit, and slide BEARING to the left. CAUTION Leg_Sec03_148EB

When performing the following work, work can be performed more Figure 4-64. Removal of CAM ASSY-2ND
C H E C K
P O IN T easily by pressing FRAME ASSY-2ND in the direction of the arrow,
and releasing FRAME ASSY-2ND from the cam on CAM ASSY-
2ND.

7. Temporarily slide CAM ASSY-2ND to the right, and draw out the shaft on CAM
ASSY-2ND from the left-side bearing on the main unit, and remove CAM ASSY-
2ND together with BEARING.
8. Remove BEARING from CAM ASSY-2ND.

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

1. Attach BEARING to the left-side bearing on the main unit.

2. Attach BEARING to the right-side bearing on CAM ASSY-2ND.

C H E C K When performing the following work, work can be performed more

P O IN T easily by pressing FRAME ASSY-2ND in the direction of the arrow,
and releasing FRAME ASSY-2ND from the cam on CAM ASSY-
2ND.

3. Insert the right-side bearing on CAM ASSY-2ND into the right-side bearing on
the main unit, slide CAM ASSY-2ND to the left, and attach CAM ASSY-2ND
together with BEARING.
4. Insert the right-side BEARING on CAM ASSY-2ND into the right-side bearing
on the main unit, and fasten with an E-ring.

C A U T IO N Make sure that the cam on CAM ASSY-2ND is matched with the
cam receptacle on FRAME ASSY-2ND.

5. Remove SENSOR 2BTR RETRACT. (p.356)

6. Attach PLATE BIAS-2ND ASSY. (p.358)
7. Attach 2ND BTR ASSY. (p.348)
8. Attach CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)
9. Attach COVER ASSY RH. (p.301)

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 EPSON AcuLaser C1100 Revision B

4.5.6 SWITCH 2BTR COVER 3)

5)-1
REMOVAL 2)
1. Remove CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)
2. Disconnect the connector (P/J113) from SWITCH 2BTR COVER.
5)-2
3. Remove the screw (silver, tapping, 6 mm) fastening BRACKET-SWITCH 2ND to
COVER-RR 2ND.
4)
4. Remove BRACKET-SWITCH 2ND from COVER-RR 2ND together with
SWITCH 2BTR COVER.
5. Unhook the two hooks fastening SWITCH 2BTR COVER to BRACKET-
SWITCH 2ND, and remove SWITCH 2BTR COVER.

REINSTALLATION
Leg_Sec03_071FA
1. Match the hooks on SWITCH 2BTR COVER with the attachment position, and Figure 4-65. Removal of SWITCH 2BTR COVER
attach to BRACKET-SWITCH 2ND.
2. Match the hole on BRACKET-SWITCH 2ND with the boss on COVER-RR 2ND,
and attach together with SWITCH 2BTR COVER.
3. Fasten BRACKET-SWITCH 2ND to COVER-RR 2ND with the screw (silver,
tapping, 6 mm).
4. Connect the connector (P/J113) to SWITCH 2BTR COVER.
5. Attach CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)

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 EPSON AcuLaser C1100 Revision B

4.5.7 SENSOR ASSY ADC

REMOVAL

1. Remove CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)

2. Remove the 2 screws (silver, with washer, tapping, 8 mm) fastening SENSOR
ASSY ADC to the main unit.

C A U T IO N When performing the following work, take care not to remove 4)

SENSOR ASSY ADC too far as it is connected by a harness.
2)
3)
2)
3. Remove SENSOR ASSY ADC from the main unit.
4. Disconnect connector (P/J431) from SENSOR ASSY ADC.

REINSTALLATION

1. Connect connector (P/J431) to SENSOR ASSY ADC.

2. Match the boss on SENSOR ASSY ADC with the hole on the main unit, and
attach SENSOR ASSY ADC.
3. Fasten SENSOR ASSY ADC to the main unit with the 2 screws (silver, with
washer, tapping, 8 mm).
4. Attach CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)
Leg_Sec03_072EB
Figure 4-66. Removal of SENSOR ASSY ADC

DISASSEMBLY AND ASSEMBLY TRANSFER 353

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 EPSON AcuLaser C1100 Revision B

4.5.8 HOLDER-ADC 2ND

13)
C A U T IO N Step numbers with [ ] in the figure indicate the step of
reinstallation.

REMOVAL

1. Remove COVER ASSY RH. (p.301) 12)

12)
2. Remove CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)
3. Remove 2ND BTR ASSY. (p.348)
4. Remove PLATE BIAS-2ND. (p.358)
5. Remove SENSOR 2BTR RETRACT. (p.356) 10)
6. Remove CAM ASSY-2ND. (p.350)
10)
7. Remove SPRING-2ND fastening both ends of FRAME ASSY-2ND to the main
unit. (p.346)
11)
8. Remove FUSER ASSY. (p.388)
9. Disconnect connector (P/J431) from SENSOR ASSY ADC.
10. Remove the 2 screws (silver, with flange, 8 mm) fastening HOLDER-ADC 2ND
to the main unit.
11. Remove HOLDER-ADC 2ND from the main unit together with SENSOR ASSY 9)
ADC.
12. Remove the 2 screws (silver, with washer, tapping, 8 mm) fastening SENSOR
ASSY ADC to HOLDER-ADC 2ND. [3)]
13. Remove SENSOR ASSY ADC from HOLDER-ADC 2ND.

Leg_Sec03_512EB
Figure 4-67. Removal of HOLDER-ADC 2ND

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

1. Match the boss on SENSOR ASSY ADC with the hole on HOLDER-ADC 2ND,
and attach SENSOR ASSY ADC.
2. Fasten SENSOR ASSY ADC to HOLDER-ADC 2ND with the 2 screws (silver,
with washer, tapping, 8 mm).
3. Route the harness in HOLDER-ADC 2ND, match the protrusion on HOLDER-
ADC 2ND with the hole on the main unit, and attach HOLDER-ADC 2ND
together with SENSOR ASSY ADC.
4. Fasten HOLDER-ADC 2ND to the main unit with the 2 screws (silver, with
flange, 8 mm).
5. Connect connector (P/J431) to SENSOR ASSY ADC.
6. Attach FUSER ASSY. (p.388)
7. Attach SPRING-2ND fastening both ends of FRAME ASSY-2ND to the main
unit. (p.346)
8. Attach CAM ASSY-2ND. (p.350)
9. Remove SENSOR 2BTR RETRACT. (p.356)
10. Attach PLATE BIAS-2ND. (p.358)
11. Attach 2ND BTR ASSY. (p.348)
12. Attach CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)
13. Attach COVER ASSY RH. (p.301)

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 EPSON AcuLaser C1100 Revision B

4.5.9 SENSOR 2BTR RETRACT

REMOVAL

1. Remove CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)

2. Disconnect connector (P/J112) from SENSOR 2BTR RETRACT.
3. Remove the screw (silver, with flange, 8 mm) fastening BRACKET-SENSOR
PHOTO to the main unit.
4. Remove BRACKET-SENSOR PHOTO from the main unit together with
SENSOR 2BTR RETRACT.
5. Unhook the three hooks fastening SENSOR 2BTR RETRACT to BRACKET-
SENSOR PHOTO, and remove SENSOR 2BTR RETRACT.

REINSTALLATION
2) 5)-2
1. Match the hooks on SENSOR 2BTR RETRACT with the attachment position, and
attach to BRACKET-SENSOR PHOTO.
2. Match the hole on BRACKET-SENSOR PHOTO with the boss on the main unit, 4)
and attach BRACKET-SENSOR PHOTO together with SENSOR 2BTR
RETRACT.
3)
3. Fasten BRACKET-SENSOR PHOTO to the main unit with the screw (silver, with
flange, 8mm). 5)-1
4. Connect connector (P/J112) to SENSOR 2BTR RETRACT.

C A U T IO N The shutter of CAM ASSY-2ND must be inserted inside the sensor

CAUTION
on SENSOR 2BTR RETRACT.
Leg_Sec03_073FB
Figure 4-68. Removal of SENSOR 2BTR RETRACT

5. Attach CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)

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 EPSON AcuLaser C1100 Revision B

4.5.10 SENSOR IBT RETRACT 6)-1 4)

REMOVAL
5)
1. Remove OP PANEL. (p.294)
2. Remove COVER INNER TOP. (p.299) 6)-2
3)
3. Disconnect connector (P/J107) from SENSOR IBT RETRACT.
4. Remove the screw (silver, with flange, 6 mm) fastening BRACKET-SENSOR
CLN to the main unit.
5. Remove BRACKET-SENSOR CLN from the main unit together with SENSOR
IBT RETRACT.
6. Unhook the three hooks fastening SENSOR IBT RETRACT to BRACKET-
SENSOR CLN, and remove SENSOR IBT RETRACT.

REINSTALLATION

1. Match the hooks on SENSOR IBT RETRACT with the attachment position, and
attach to BRACKET-SENSOR CLN.
2. Match the hole on BRACKET-SENSOR CLN with the boss on the main unit, and
attach BRACKET-SENSOR CLN together with SENSOR IBT RETRACT.

C A U T IO N The shutter of CAM ASSY-IBT CL must be inserted inside the

sensor on SENSOR IBT RETRACT.

3. Fasten BRACKET-SENSOR CLN to the main unit with the screw (silver, with
flange, 6 mm).
4. Connect connector (P/J107) to SENSOR IBT RETRACT.
5. Attach COVER INNER TOP. (p.299)
6. Attach OP PANEL. (p.294) CAUTION
Leg_Sec03_074FA
Figure 4-69. Removal of SENSOR IBT RETRACT

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 EPSON AcuLaser C1100 Revision B

4.5.11 PLATE BIAS-2ND ASSY E ring

SHAFT-CENT 2ND
REMOVAL

1. Remove COVER ASSY RH. (p.301) 4)

2. Remove CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341) 4)
3. Remove 2ND BTR ASSY. (p.348)
4. Remove the 2 screws (silver, with flange, tapping, 6 mm) fastening PLATE BIAS-
2ND ASSY to the main unit.

C A U T IO N When performing the following work, take care not to remove

PLATE BIAS-2ND ASSY too far as it is connected by WIRE ASSY
2BTR.

7)
5. Unclamp the clamp fastening WIRE ASSY 2BTR, and slightly release PLATE
BIAS-2ND ASSY from the main unit.
6)
6. Remove the screw (silver, tapping, 6 mm) fastening the terminal of WIRE ASSY
2BTR to PLATE BIAS-2ND ASSY. 5)-2
7. Remove WIRE ASSY 2BTR from PLATE BIAS-2ND ASSY, and remove 5)-1
PLATE BIAS-2ND ASSY.

Leg_Sec03_150FB

Figure 4-70. Removal of PLATE BIAS-2ND ASSY

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

1. Attach WIRE ASSY 2BTR to PLATE BIAS-2ND ASSY.

2. Fasten the terminal of WIRE ASSY 2BTR to PLATE BIAS-2ND ASSY with the
screw (silver, tapping, 6 mm).

C A U T IO N When performing the following work, route WIRE ASSY 2BTR

connected to PLATE BIAS-2ND ASSY so that it does not come into
contact with CAM ASSY-2ND.

C H E C K When the E-ring on FRAME ASSY-2ND is contacting the PLATE

P O IN T BIAS-2ND ASSY and is difficult to attach, turn SHAFT-CENT
2ND to facilitate attachment.

3. Match the boss on PLATE BIAS-2ND ASSY with the hole on the main unit, and
attach PLATE BIAS-2ND ASSY.
4. Fasten PLATE BIAS-2ND ASSY to the main unit with the 2 screws (silver, with
flange, tapping, 6 mm), and fasten WIRE ASSY 2BTR with the clamp.
5. Attach 2ND BTR ASSY. (p.348)
6. Attach CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)
7. Attach COVER ASSY RH. (p.301)

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 EPSON AcuLaser C1100 Revision B

4.5.12 CAM ASSY-IBT CL 4. Attach SENSOR IBT RETRACT. (p.357)

C A U T IO N The shutter of CAM ASSY-IBT CL must be inserted inside the

REMOVAL sensor on SENSOR IBT RETRACT.
1. Remove COVER ASSY RH. (p.301)
2. Remove COVER ASSY LH. (p.295)
5. Attach PWBA MCU. (p.404)
3. Remove OP PANEL. (p.294)
6. Attach COVER INNER TOP. (p.299)
4. Remove COVER INNER TOP. (p.299)
7. Attach OP PANEL. (p.294)
5. Remove PWBA MCU. (p.404)
8. Attach COVER ASSY LH. (p.295)
C A U T IO N When performing the following work, there is no need to remove
9. Attach COVER ASSY RH. (p.301)
SENSOR IBT RETRACT from BRACKET-SENSOR CLN.

9)

6. Remove SENSOR IBT RETRACT. (p.357)

7. Remove the left and right E-rings fastening CAM ASSY-IBT CL to the main unit.
8. Remove the left and right BEARING-BRUSH CAMs fastening CAM ASSY-IBT
CL to the main unit.
9. Temporarily slide CAM ASSY-IBT CL to the left, and draw out the shaft of CAM
ASSY-IBT CL from the right-side bearing on the main unit to remove CAM
ASSY-IBT CL.
7)
8)
REINSTALLATION

1. Insert the shaft left side of CAM ASSY-IBT CL into the left-side bearing of the
main unit, slide CAM ASSY-IBT CL to the right, and attach CAM ASSY-IBT CL.
7)
2. Fasten CAM ASSY-IBT CL to the main unit by the left and right BEARING- 8)
BRUSH CAMs.
3. Fasten CAM ASSY-IBT CL to the main unit by the left and right E-rings.

Leg_Sec03_075EB
Figure 4-71. Removal of CAM ASSY-IBT CL

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 EPSON AcuLaser C1100 Revision B

4.6 XERO

4.6.1 SENSOR TR-0

REMOVAL 5)
1. Open COVER ASSY TOP. 4) 3)
2. Remove Photoconductor Unit.
3. Remove the screw (silver, with flange, 10mm) fastening SENSOR TR-0 to
PLATE-TR-0.
4. Remove SENSOR TR-0 from PLATE-TR-0.
5. Disconnect connector (P/J108) from SENSOR TR-0.

REINSTALLATION
1. Connect connector (P/J108) to SENSOR TR-0.
2. Match the hole on SENSOR TR-0 with the boss on PLATE-TR-0, and attach
SENSOR TR-0.
3. Fasten SENSOR TR-0 to PLATE-TR-0 with the screw (silver, with flange,
10mm).
4. Attach Photoconductor Unit.
5. Close COVER ASSY TOP.

Leg_Sec03_076EA
Figure 4-72. Removal of SENSOR TR-0

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 EPSON AcuLaser C1100 Revision B

4.6.2 GUIDE CRU ASSY D 6)

7)
REMOVAL

1. Remove 2ND BTR ASSY. (p.348) 6)

2. Remove COVER ASSY LH. (p.295)
3. Remove PWBA MCU. (p.404)

C H E C K When performing the following work, connectors need not be

P O IN T disconnected from PWBA ESS.

4. Remove CHASSIS ASSY ESS. (p.411)

5. Remove SENSOR TR-0. (p.361)
6. Remove the 2 screws (silver, with flange, tapping, 6 mm) fastening PLATE-TR-0
to GUIDE CRU ASSY D and GUIDE CRU ASSY AD.
7. Remove PLATE-TR-0 from GUIDE CRU ASSY D and GUIDE CRU ASSY AD.

Leg_Sec03_077EB
Figure 4-73. Removal of GUIDE CRU ASSY D (1)

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 EPSON AcuLaser C1100 Revision B

8. Unclamp the clamp fastening HARNESS-ASSY XERO on the left side of the
10)
main unit.
9. Remove the 5 screws (silver, with flange, tapping, 6 mm) fastening GUIDE CRU
ASSY D to the main unit.
10. Remove GUIDE CRU ASSY D from the main unit.

MOT ASSY P/R

REINSTALLATION

1. Insert HARNESS-ASSY XERO into the hole on the left side of the main unit, and
match the boss on GUIDE CRU ASSY D into the hole on the main unit to attach
GUIDE CRU ASSY D.
2. Fasten GUIDE CRU ASSY D to the main unit with the 5 screws (silver, with
flange, tapping, 6 mm).
3. Fasten HARNESS-ASSY XERO on the left side of the main unit with the clamp.
4. Attach PLATE-TR-0 to GUIDE CRU ASSY D and GUIDE CRU ASSY AD.
5. Fasten PLATE-TR-0 to GUIDE CRU ASSY D and GUIDE CRU ASSY AD with
9)
the 2 screws (silver, with flange, tapping, 6 mm).

C A U T IO N Lightly open/close COVER ASSY TOP, and check operation of the

coupling on MOT ASSY P/R. 9) 9) 9)

9)
6. Attach SENSOR TR-0. (p.361) 8)
7. Attach CHASSIS ASSY ESS. (p.411)
8. Attach PWBA MCU. (p.404)
9. Attach COVER ASSY LH. (p.295)
10. Attach 2ND BTR ASSY. (p.348)

Leg_Sec03_078EB
Figure 4-74. Removal of GUIDE CRU ASSY D (2)

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 EPSON AcuLaser C1100 Revision B

4.6.3 LATCH ASSY D 6. Attach SENSOR TR-0. (p.361)

7. Attach CHASSIS ASSY ESS. (p.411)
REMOVAL 8. Attach PWBA MCU. (p.404)
1. Remove 2ND BTR ASSY. (p.348) 9. Attach COVER ASSY LH. (p.295)
10. Attach 2ND BTR ASSY. (p.348)
2. Remove COVER ASSY LH. (p.295)
3. Remove PWBA MCU. (p.404)
4. Remove CHASSIS ASSY ESS. (p.411)
5. Remove SENSOR TR-0. (p.361)
6. Remove GUIDE CRU ASSY D. (p.362)
7. Remove ANTENNA ASSY. (p.365) 8)
8. Unhook SPRING-TORSION D from the hook on GUIDE CRU ASSY D.
9. Slightly rotate LATCH ASSY D together with SPRING-TORSION D in the
direction of the arrow so that they escape the notch on GUIDE CRU ASSY D to
remove.
10. Remove SPRING-TORSION D from LATCH ASSY D.

10)
REINSTALLATION

1. Attach SPRING-TORSION D to LATCH ASSY D. 9)

2. Attach LATCH ASSY D to GUIDE CRU ASSY D together with SPRING-
TORSION D, and insert the bottom front side of LATCH ASSY D into the notch
on GUIDE CRU ASSY D.
3. Hook SPRING-TORSION D onto the hook on GUIDE CRU ASSY D.

C A U T IO N SPRING-TORSION D must be firmly attached onto the hooks on

LATCH ASSY D and GUIDE CRU ASSY D.

CAUTION
4. Attach ANTENNA ASSY. (p.365) Leg_Sec03_201FA
5. Attach GUIDE CRU ASSY D. (p.362) Figure 4-75. Removal of LATCH ASSY D

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 EPSON AcuLaser C1100 Revision B

4.6.4 ANTENNA ASSY

REMOVAL

1. Remove 2ND BTR ASSY. (p.348)

2. Remove COVER ASSY LH. (p.295)
3. Remove PWBA MCU. (p.404) 8)-2
4. Remove CHASSIS ASSY ESS. (p.411)
5. Remove SENSOR TR-0. (p.361)
6. Remove GUIDE CRU ASSY D. (p.362)
7. Unhook the hook fastening ARM-COUPLING to GUIDE CRU ASSY D, and
remove ARM-COUPLING from the shaft on GUIDE CRU ASSY D together with
SPRING-TORSION ARM.
8. Turn ARM-COUPLING 90°, and remove ARM-COUPLING.

C A U T IO N When unhooking the hook fastening ANTENNA ASSY, take care 8)-1
not to damage the hook.

9. Unhook the hook fastening ANTENNA ASSY to GUIDE CRU ASSY D, and
remove ANTENNA ASSY.
10. Disconnect connector (P/J109) from ANTENNA ASSY.
7)

CAUTION
Leg_Sec03_079FB
Figure 4-76. Removal of ANTENNA ASSY (1)

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION
9)-1
1. Connect connector (P/J109) to ANTENNA ASSY.
2. Match the boss on GUIDE CRU ASSY D with the hole on ANTENNA ASSY,
attach ANTENNA ASSY, and fasten with a hook.
3. Attach SPRING-TORSION ARM to ARM-COUPLING, and insert the shaft on
LINK-COUPLING into the long oblong hole on ARM-COUPLING.
4. Turn ARM-COUPLING 90°, attach ARM-COUPLING to the shaft on GUIDE
CRU ASSY D, fasten with a hook, and hook SPRING-TORSION ARM onto the
notch of GUIDE CRU ASSY D.

C A U T IO N SPRING-TORSION ARM must be firmly hooked onto the shaft of

ARM-COUPLING and LATCH ASSY D.

5. Attach GUIDE CRU ASSY D. (p.362)

6. Attach SENSOR TR-0. (p.361)
7. Attach CHASSIS ASSY ESS. (p.411) 10)
8. Attach PWBA MCU. (p.404)
9. Attach COVER ASSY LH. (p.295)
10. Attach 2ND BTR ASSY. (p.348)

9)-2 Leg_Sec03_080FA

Figure 4-77. Removal of ANTENNA ASSY (2)

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 EPSON AcuLaser C1100 Revision B

4.6.5 GUIDE CRU ASSY AD 6) 7)

REMOVAL

1. Remove COVER ASSY RH. (p.301) 6)

2. Remove 2ND BTR ASSY. (p.348)
3. Remove FRAME ASSY-PH. (p.327)
4. Remove BCR CLN XERO ASSY. (p.373)
5. Remove SENSOR TR-0. (p.361)
6. Remove the 2 screws (silver, with flange, tapping, 6 mm) fastening PLATE-TR-0
to GUIDE CRU ASSY D and GUIDE CRU ASSY AD.
7. Remove PLATE-TR-0 from GUIDE CRU ASSY D and GUIDE CRU ASSY AD.

Leg_Sec03_081EB
Figure 4-78. Removal of GUIDE CRU ASSY AD (1)

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 EPSON AcuLaser C1100 Revision B

8. Remove WIRE ASSY BTR, WIRE ASSY IBT and WIRE ASSY BCR from 13. Remove the 7 screws (silver, with flange, tapping, 6 mm) fastening GUIDE CRU
GUIDE CRU ASSY AD. ASSY AD to the main unit.
9. Remove the screw (silver, with flange, tapping, 6 mm) fastening WIRE ASSY 14. Draw out the protrusion on GUIDE CRU ASSY AD from the hole on the main
DTN to GUIDE CRU ASSY AD. unit, and remove GUIDE CRU ASSY AD.
10. Remove WIRE ASSY DTN from GUIDE CRU ASSY AD.
11. Remove SPRING-LATCH hooked onto the main unit and the stud of GUIDE 14)
CRU ASSY AD.
12. Remove the screw (silver, with flange, tapping, 6 mm) fastening both PLATE-
ASSY GND and GUIDE CRU ASSY AD to the main unit, and remove PLATE-
ASSY GND.

10)
13)
13)
13)
8) 13)
9) 13) 12)-2
12)-1
8) 13)
11) 13)
8)

Leg_Sec03_082EB Leg_Sec03_083EB

Figure 4-79. Removal of GUIDE CRU ASSY AD (2) Figure 4-80. Removal of GUIDE CRU ASSY AD (3)

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION Table 4-3. Symptoms when the connector is loose

Connector Error Caused by Connector
1. Match the protrusion and boss on GUIDE CRU ASSY AD with the hole on the Panel Indication Symptom
No. Disconnection
main unit, and attach GUIDE CRU ASSY AD. Printed light
D (504) --- ---
2. Fasten GUIDE CRU ASSY AD to the main unit with the 7 screws (silver, with and faint.
flange, tapping, 6 mm). A (508) ---
Entire surface
---
printed black.
3. Attach PLATE-ASSY GND to the main unit, and tighten together with GUIDE
G (506) --- Normal printing ---
CRU ASSY AD with the screw (silver, with flange, tapping, 6 mm).

C H E C K When performing the following work, work can be performed more

P O IN T easily with LEVER-LATCH PR on GUIDE CRU ASSY AD closed.

4. Attach SPRING-LATCH onto the main unit and the stud on GUIDE CRU ASSY
AD.
5. Attach WIRE ASSY DTN to GUIDE CRU ASSY AD.
6. Fasten WIRE ASSY DTN to GUIDE CRU ASSY AD with the screw (silver, with
flange, tapping, 6 mm).
7. Attach WIRE ASSY BTR, WIRE ASSY IBT and WIRE ASSY BCR to GUIDE
CRU ASSY AD.
8. Attach PLATE-TR-0 to GUIDE CRU ASSY D and GUIDE CRU ASSY AD.
9. Fasten PLATE-TR-0 to GUIDE CRU ASSY D and GUIDE CRU ASSY AD with
the 2 screws (silver, with flange, tapping, 6 mm).
10. Attach SENSOR TR-0. (p.361)
11. Attach BCR CLN XERO ASSY. (p.373)
12. Attach FRAME ASSY-PH. (p.327)
13. Attach 2ND BTR ASSY. (p.348)
14. Attach COVER ASSY RH. (p.301)

DISASSEMBLY AND ASSEMBLY XERO 369

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 EPSON AcuLaser C1100 Revision B

4.6.6 LEVER-LATCH PR
REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Remove 2ND BTR ASSY. (p.348)
3. Remove FRAME ASSY-PH. (p.327)
4. Remove BCR CLN XERO ASSY. (p.373)
5. Remove SENSOR TR-0. (p.361)
7)
6. Remove GUIDE CRU ASSY AD. (p.367)
7. Turn LEVER-LATCH PR in the direction of the arrow, match the notch on
LEVER-LATCH PR with the protrusion on the boss of GUIDE CRU ASSY AD,
and remove LEVER-LATCH PR.

REINSTALLATION

1. Match the notch on LEVER-LATCH PR with the protrusion on the boss of

GUIDE CRU ASSY AD, and attach LEVER-LATCH PR.
2. Attach GUIDE CRU ASSY AD. (p.367)
3. Attach SENSOR TR-0. (p.361)
4. Attach BCR CLN XERO ASSY. (p.373)
5. Attach FRAME ASSY-PH. (p.327)
6. Attach 2ND BTR ASSY. (p.348)
7. Attach COVER ASSY RH. (p.301)

Leg_Sec03_202FA
Figure 4-81. Removal of LEVER-LATCH PR

DISASSEMBLY AND ASSEMBLY XERO 370

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 EPSON AcuLaser C1100 Revision B

4.6.7 CAP-PLATE PR, PLATE-ASSY PR

REMOVAL 9)-2

1. Remove COVER ASSY RH. (p.301)

2. Remove 2ND BTR ASSY. (p.348) 9)-1
3. Remove FRAME ASSY-PH. (p.327)
4. Remove BCR CLN XERO ASSY. (p.373)
5. Remove SENSOR TR-0. (p.361)
6. Remove GUIDE CRU ASSY AD. (p.367)
7. Remove LEVER-LATCH PR. (p.370)
8. Turn PLATE-ASSY PR in the direction of the arrow, match the notch on PLATE-
ASSY PR with the protrusion on GUIDE CRU ASSY AD, and remove PLATE-
ASSY PR together with CAP-PLATE PR.
9. Unhook the hook on CAP-PLATE PR, and remove CAP-PLATE PR from
PLATE-ASSY PR.
8)
REINSTALLATION

C A U T IO N When performing the following work, pay attention to the

attachment direction of CAP-PLATE PR.

1. Attach CAP-PLATE PR to PLATE-ASSY PR.

2. Match the notch on PLATE-ASSY PR with the protrusion on GUIDE CRU ASSY
AD, and attach PLATE-ASSY PR together with CAP-PLATE PR.
3. Attach LEVER-LATCH PR. (p.370)
4. Attach GUIDE CRU ASSY AD. (p.367)
5. Attach SENSOR TR-0. (p.361)
6. Attach BCR CLN XERO ASSY. (p.373) Leg_Sec03_203FA

7. Attach FRAME ASSY-PH. (p.327) Figure 4-82. Removal of CAP-PLATE PR and PLATE-ASSY PR

8. Attach 2ND BTR ASSY. (p.348)

9. Attach COVER ASSY RH. (p.301)

DISASSEMBLY AND ASSEMBLY XERO 371

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 EPSON AcuLaser C1100 Revision B

4.6.8 LATCH ASSY AD

REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Remove 2ND BTR ASSY. (p.348)
3. Remove FRAME ASSY-PH. (p.327)
4. Remove BCR CLN XERO ASSY. (p.373)
5. Remove SENSOR TR-0. (p.361)
6. Remove GUIDE CRU ASSY AD. (p.367)
7. Unhook SPRING-TORSION AD from the hook on GUIDE CRU ASSY AD.
8. Remove LATCH ASSY AD together with SPRING-TORSION AD from GUIDE
CRU ASSY AD.
9. Remove SPRING-TORSION AD from LATCH ASSY AD.
8)

REINSTALLATION

1. Attach SPRING-TORSION AD to LATCH ASSY AD. 7)

2. Attach LATCH ASSY AD together with SPRING-TORSION AD to GUIDE CRU 9)
ASSY AD.
3. Hook SPRING-TORSION AD onto the hook on GUIDE CRU ASSY AD.

C A U T IO N SPRING-TORSION AD must be firmly attached onto the hooks on

LATCH ASSY AD and GUIDE CRU ASSY AD.
(Do not attach SPRING-TORSION AD in the reverse direction)

4. Attach GUIDE CRU ASSY AD. (p.367)

5. Attach SENSOR TR-0. (p.361)
6. Attach BCR CLN XERO ASSY. (p.373) CAUTION
Leg_Sec03_204FA
7. Attach FRAME ASSY-PH. (p.327) Figure 4-83. Removal of LATCH ASSY AD
8. Attach 2ND BTR ASSY. (p.348)
9. Attach COVER ASSY RH. (p.301)

DISASSEMBLY AND ASSEMBLY XERO 372

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 EPSON AcuLaser C1100 Revision B

4.6.9 BCR CLN XERO ASSY 4. Fasten the harness on BCR CLN XERO ASSY with the clamp on the right side of
the main unit.
REMOVAL 5. Attach FRAME ASSY-PH. (p.327)

1. Remove COVER ASSY RH. (p.301) 6. Attach COVER ASSY RH. (p.301)

2. Remove FRAME ASSY-PH. (p.327)

6)
3. Disconnect connector (P/J617) from BCR CLN XERO ASSY on the right side of
the main unit.
5)
5)
4. Unclamp the clamp on the right side of the main unit, and move the harness on
BCR CLN XERO ASSY to inside the main unit from the hole on the right side of
the main unit.

C A U T IO N When performing the following work, press LATCH ROTARY on

LATCH ASSY-ROTARY to release the latch, turn FRAME ASSY-
ROTARY by hand, and move HOUSING ASSY-DEVE to prevent
contact with MAG ROLL. 4)
5. Remove the 2 screws (silver, with flange, 6 mm) fastening BCR CLN XERO 4)
ASSY to the main unit.
6. Remove BCR CLN XERO ASSY from the main unit.

REINSTALLATION
3)
1. Match the boss on BCR CLN XERO ASSY with the hole on the main unit, and
Leg_Sec03_084EB
attach BCR CLN XERO ASSY. Figure 4-84. Removal of BCR CLN XERO ASSY
C A U T IO N When performing the following work, press LATCH ROTARY on
LATCH ASSY-ROTARY to release the latch, turn FRAME ASSY-
ROTARY by hand, and move HOUSING ASSY-DEVE to prevent
contact with MAG ROLL.

2. Fasten BCR CLN XERO ASSY to the main unit with the 2 screws (silver, with
flange, 6 mm).
3. Take out the harness of BCR CLN XERO ASSY to the outside from the hole on
the right side of the main unit, and connect connector (P/L617) for BCR CLN
XERO ASSY to the harness.

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 EPSON AcuLaser C1100 Revision B

4.6.10 SENSOR TNER FULL

REMOVAL

1. Remove FRAME ASSY-PH. (p.327)

2. Disconnect connector (P/J126) from SENSOR TNER FULL.
3. Unhook the two hooks fastening SENSOR TNER FULL to the main unit, and
remove SENSOR TNER FULL.

REINSTALLATION

1. Match the hook on SENSOR TNER FULL with the attachment position, and
attach to the main unit.
2. Connect connector (P/J126) to SENSOR TNER FULL.
3. Attach FRAME ASSY-PH. (p.327) 2)

3)-1
3)-1
3)-2

Leg_Sec03_183EB
Figure 4-85. Removal of SENSOR TNER FULL

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 EPSON AcuLaser C1100 Revision B

4.7 ROS
9)-2 9)-1
4.7.1 ROS ASSY 10) 10)
8)
REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Remove COVER ASSY LH. (p.295)
3. Remove COVER MSI. (p.291)
4. Remove COVER FRONT L and COVER FRONT ASSY U. (p.292) FRONT REAR

5. Remove COVER INNER L. (p.302)

6. Remove FRAME ASSY-PH. (p.327)
7. Remove CLEANER ASSY. (p.377)
8. Disconnect connector (P/J601) and connector (P/J602) from ROS ASSY.
9. Remove the screw (silver, with flange, 6 mm) fastening the ground lead on ROS
ASSY to the main unit, and disconnect the ground lead on ROS ASSY from the
main unit.

C A U T IO N When performing the following work, press LATCH ROTARY on

LATCH ASSY-ROTARY to release the latch, turn FRAME ASSY-
ROTARY by hand, and move HOUSING ASSY-DEVE to prevent
contact with MAG ROLL.

10. Remove the 5 screws (silver, with flange, 10mm) fastening ROS ASSY to the
main unit.
11. Slightly lift up ROS ASSY, remove the boss on ROS ASSY from the hole on the
main unit, and remove ROS ASSY towards the rear of the main unit. 11)

Leg_Sec03_086FA

Figure 4-86. Removal of ROS ASSY

DISASSEMBLY AND ASSEMBLY ROS 375

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

1. Match the boss on ROS ASSY with the hole on the main unit, and attach ROS
ASSY.

C A U T IO N When performing the following work, press LATCH ROTARY on

LATCH ASSY-ROTARY to release the latch, turn FRAME ASSY-
ROTARY by hand, and move HOUSING ASSY-DEVE to prevent
contact with MAG ROLL.

2. Fasten ROS ASSY to the main unit with the 5 screws (silver, with flange, 10mm).
3. Attach the ground lead of ROS ASSY to the main unit, and fasten with the screw
(silver, with flange, 6 mm).
4. Connect connector (P/J601) and connector (P/J602) to ROS ASSY.
5. Attach CLEANER ASSY. (p.377)
6. Attach FRAME ASSY-PH. (p.327)
7. Attach COVER INNER L. (p.302)
8. Attach COVER FRONT L and COVER FRONT ASSY U. (p.292)
9. Attach COVER MSI. (p.291)
10. Attach COVER ASSY LH. (p.295)
11. Attach COVER ASSY RH. (p.301)

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 EPSON AcuLaser C1100 Revision B

4.7.2 CLEANER ASSY

REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Remove the 2 screws (silver, with flange, 10mm) fastening GUIDE-ROS CLN to
the main unit.
3. Remove GUIDE-ROS CLN from the main unit.
4. Remove CLEANER ASSY from the main unit.

REINSTALLATION

1. Align CLEANER ASSY with the rails on the main unit, and insert.
4)
2. Match the boss on GUIDE-ROS CLN with the hole on the main unit, and attach.
3. Fasten GUIDE-ROS CLN to the main unit with the 2 screws (silver, with flange, 3)
10mm).
4. Attach COVER ASSY RH. (p.301)
2)

2)

Leg_Sec03_087EB
Figure 4-87. Removal of CLEANER ASSY

DISASSEMBLY AND ASSEMBLY ROS 377

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 EPSON AcuLaser C1100 Revision B

4.8 DEVE 4)-1

4.8.1 LATCH ASSY-ROTARY

REMOVAL

1. Remove COVER ASSY LH. (p.295)

2. Remove LV/HVPS. (p.407)
3. Remove the 3 screws (silver, with flange, tapping, 8 mm) fastening LATCH
ASSY-ROTARY to the main unit.
CAUTION
4. Unhook the three hooks fastening LATCH ASSY-ROTARY to the main unit, and
remove LATCH ASSY-ROTARY.

3)
3)
REINSTALLATION

3)
C A U T IO N Pay attention to the levers and springs inside LATCH ASSY-
ROTARY as they easily come loose.
When a part on LATCH ASSY-ROTARY comes off, referring to
the assembly drawing, assemble the part, and attach LATCH
ASSY-ROTARY to the main unit.
1. Match the hook on LATCH ASSY-ROTARY with the attachment position, and
4)-2
attach to the main unit.
2. Fasten LATCH ASSY-ROTARY to the main unit with the 3 screws (silver, with
flange, tapping, 8 mm).
3. Attach LV/HVPS. (p.407)
4. Attach COVER ASSY LH. (p.295)

Leg_Sec03_088EB
Figure 4-88. Removal of LATCH ASSY-ROTARY

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 EPSON AcuLaser C1100 Revision B

4.8.2 ANTENNA ASSY-CTRG

C A U T IO N Step numbers with [ ] in the figure indicate the step of
reinstallation.

REMOVAL

1. Remove COVER ASSY RH. (p.301) [3)]

2. Remove ANTENNA CTRG. (p.380)
3. Remove the 2 screws (silver, with flange, tapping, 8 mm) fastening ANTENNA
ASSY-CTRG to the main unit.
4. Press the boss fastening ANTENNA ASSY-CTRG to the main unit, and remove
ANTENNA ASSY-CTRG.
3)
4)-2
REINSTALLATION
3)
1. Remove the toner cartridge overlaying the attachment position of ANTENNA
ASSY-CTRG.
2. Match the boss on ANTENNA ASSY-CTRG with the attachment position, and
attach to the main unit.
3. Press ANTENNA ASSY-CTRG from the inside of the main unit (hole on FRAME
ASSY-ROTARY), and firmly insert the boss on ANTENNA ASSY-CTRG into
the hole on the main unit.
4. Fasten ANTENNA ASSY-CTRG to the main unit with the 2 screws (silver, with 4)-1 4)-1
flange, tapping, 8 mm).
5. Attach ANTENNA CTRG. (p.380)
6. Attach COVER ASSY RH. (p.301)
Leg_Sec03_089EB
Figure 4-89. Removal of ANTENNA ASSY-CTRG

DISASSEMBLY AND ASSEMBLY DEVE 379

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 EPSON AcuLaser C1100 Revision B

4.8.3 ANTENNA CTRG

REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Disconnect connector (P/J106) from ANTENNA CTRG.
3. Unhook the hook fastening ANTENNA CTRG to ANTENNA ASSY-CTRG, and
remove ANTENNA ASSY-CTRG.

REINSTALLATION

1. Match the boss on ANTENNA ASSY-CTRG with the hole on ANTENNA CTRG,
attach ANTENNA CTRG, and fasten with a hook.
2. Connect connector (P/J106) to ANTENNA CTRG.
2)
3. Attach COVER ASSY RH. (p.301)

3)-2
3)-1

Leg_Sec03_091EB
Figure 4-90. Removal of ANTENNA CTRG

DISASSEMBLY AND ASSEMBLY DEVE 380

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 EPSON AcuLaser C1100 Revision B

4.8.4 HOLDER ASSY-BIAS

REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Remove WIRE ASSY DEVE connected to HOLDER ASSY-BIAS.
3. Unhook the hook on HOLDER ASSY-BIAS from the main unit, and slide down,
match the protrusion on HOLDER ASSY-BIAS with the notch on the main unit,
and remove HOLDER ASSY-BIAS.

REINSTALLATION

1. Match the protrusion on HOLDER ASSY-BIAS with the notch of the attachment 3)-2
hole on the main unit, and attach, and slide HOLDER ASSY-BIAS upwards and
fasten with a hook.
2)
2. Attach WIRE ASSY DEVE to HOLDER ASSY-BIAS.
3. Attach COVER ASSY RH. (p.301)

3)-1

Leg_Sec03_092FB
Figure 4-91. Removal of HOLDER ASSY-BIAS

DISASSEMBLY AND ASSEMBLY DEVE 381

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 EPSON AcuLaser C1100 Revision B

4.8.5 SENSOR ROTARY HOME POSI

REMOVAL

1. Remove COVER ASSY LH. (p.295)

2. Remove LV/HVPS. (p.407)
3. Remove the screw (silver, with flange, 6 mm) fastening BRACKET SENSOR to
the main unit.
4. Remove BRACKET SENSOR from the main unit together with SENSOR
ROTARY HOME POSI.
5. Disconnect connector (P/J105) from SENSOR ROTARY HOME POSI.
6. Unhook the three hooks fastening SENSOR ROTARY HOME POSI to
BRACKET SENSOR, and remove SENSOR ROTARY HOME POSI.

REINSTALLATION

1. Match the hooks on SENSOR ROTARY HOME POSI with the attachment 6)-1
position, and attach to BRACKET SENSOR.
6)-2
2. Connect connector (P/J105) to SENSOR ROTARY HOME POSI. 4)
3. Match the hole on BRACKET SENSOR with the boss on the main unit, and attach
BRACKET SENSOR together with SENSOR ROTARY HOME POSI.
4. Fasten BRACKET SENSOR to the main unit with the screw (silver, with flange, 6
mm).
5. Attach LV/HVPS. (p.407) 3)
5)
6. Attach COVER ASSY LH. (p.295)

Leg_Sec03_093EB
Figure 4-92. Removal of SENSOR ROTARY HOME POSI

DISASSEMBLY AND ASSEMBLY DEVE 382

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 EPSON AcuLaser C1100 Revision B

4.8.6 HOUSING ASSY-DEVE K, HOUSING ASSY-

DEVE Y, HOUSING ASSY-DEVE M, HOUSING
ASSY-DEVE C
REMOVAL

C A U T IO N „ When removing the Toner Cartridge, put several sheets of

copy paper on COVER FRONT ASSY U and other parts to
prevent them from getting dirty.
„ Before removing HOUSING ASSY-DEVE, be sure to wipe off
any residual toner on it.

W A R N IN G Do not vacuum off spilled toner using an usual vacuum cleaner

because there is a possibility of taking fire.

C A U T IO N When wiping off the residual toner on HOUSING ASSY-DEVE,

take care to prevent any toner from static cling to the sensors on 9)-1
HOUSING ASSY-DEVE. 9)-2

1. Remove the Toner Cartridge.

2. Remove COVER ASSY RH. (p.301)
3. Remove COVER ASSY TOP. (p.283)
4. Remove 2ND BTR ASSY. (p.348)
5. Remove FRAME ASSY-PH. (p.327)
6. Remove BCR CLN XERO ASSY. (p.373)
7. Remove SENSOR TR-0. (p.361)
8. Remove GUIDE CRU ASSY AD. (p.367)
9. Press LATCH ROTARY on LATCH ASSY-ROTARY to release the latch, turn Leg_Sec03_094EB
FRAME ASSY-ROTARY by hand, and move HOUSING ASSY-DEVE to a
position where is easy to work. Figure 4-93. Removal of HOUSING ASSY-DEVE (1)

C A U T IO N After moving HOUSING ASSY-DEVE, make sure that FRAME

ASSY-ROTARY is firmly locked by LATCH ROTARY.

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 EPSON AcuLaser C1100 Revision B

10. Unhook the hook on PIVOT AD fastening the right side of HOUSING ASSY-
DEVE to FRAME ASSY-ROTARY, and remove PIVOT AD. 10)-2
11. Remove the screw (silver, with flange, tapping, 8mm) fastening PIVOT ASSY
fastening the left side of HOUSING ASSY-DEVE to FRAME ASSY-ROTARY, 11)-2
and remove PIVOT ASSY.
11)-1 10)-1
12. Lift up the right side of HOUSING ASSY-DEVE, remove the gear on the left side
of HOUSING ASSY-DEVE from the gear on FRAME ASSY-ROTARY, and
12)
remove HOUSING ASSY-DEVE.

thin
REINSTALLATION CAUTION
thick

C A U T IO N Holes are provided in the protrusion portion on FRAME ASSY-

ROTARY for preventing mis-insertion of HOUSING ASSY-DEVE.
The attachment positions of each color of HOUSING ASSY-DEVE
is indicated as K, Y, M, and C on FRAME ASSY-ROTARY.
1. Match the gear on the left side of HOUSING ASSY-DEVE of the same color as
the indicated color on FRAME ASSY-ROTARY with the gear on FRAME ASSY-
ROTARY, and attach HOUSING ASSY-DEVE.

C A U T IO N „ The spring under both sides of the bottom of HOUSING

ASSY-DEVE must be placed firmly on the spring receptacle
of FRAME ASSY-ROTARY.
„ A spring having a thick right side and a thin left side is used as
the spring under HOUSING ASSY-DEVE.

CAUTION
Leg_Sec03_095EB

Figure 4-94. Removal of HOUSING ASSY-DEVE (2)

DISASSEMBLY AND ASSEMBLY DEVE 384

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 EPSON AcuLaser C1100 Revision B

2. Match the hole on HOUSING ASSY-DEVE with the attachment hole on the left
side of FRAME ASSY-ROTARY, insert the shaft on PIVOT ASSY, and fasten
the left side of HOUSING ASSY-DEVE with the screw (silver, with flange,
tapping, 8 mm).
3. Match the hole on HOUSING ASSY-DEVE with the attachment hole on the right
side of FRAME ASSY-ROTARY, insert the shaft of PIVOT AD, and fasten the
hook on PIVOT AD to attach HOUSING ASSY-DEVE.

C A U T IO N Removed PIVOT ADs should not be re-used; only new PIVOT ADs
in the KIT should be used.

4. Attach GUIDE CRU ASSY AD. (p.367)

5. Attach SENSOR TR-0. (p.361)
6. Attach BCR CLN XERO ASSY. (p.373)
7. Attach FRAME ASSY-PH. (p.327)
8. Attach 2ND BTR ASSY. (p.348)
9. Attach COVER ASSY TOP. (p.283)
10. Attach COVER ASSY RH. (p.301)
11. Attach the Toner Cartridge.
12. Use CLEANER ASSY to clean the window of ROS ASSY.

C A U T IO N When replaced HOUSING ASSY-DEVE with a new one, clear the

DEVE life counter to zero. (Refer to “6.3.1 Maintenance Menu
Items” (p497))

DISASSEMBLY AND ASSEMBLY DEVE 385

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 EPSON AcuLaser C1100 Revision B

4.8.7 FRAME ASSY-ROTARY

17)
REMOVAL
21)
1. Remove COVER ASSY RH. (p.301) 21)
2. Remove COVER ASSY TOP. (p.283) 21)
3. Remove 2ND BTR ASSY. (p.348)
4. Remove COVER ASSY LH. (p.295)
5. Remove COVER MSI. (p.291)
6. Remove COVER FRONT L and COVER FRONT ASSY U. (p.292) 27)
7. Remove COVER INNER TOP. (p.299)
8. Remove PWBA MCU. (p.404)
9. Remove LV/HVPS. (p.407) 27)
10. Remove CHASSIS ASSY ESS. (p.411)
11. Remove DRIVE ASSY PRO. (p.394)
12. Remove MOT ASSY MAG. (p.396) 26)
13. Remove LATCH ASSY-ROTARY. (p.378)
14. Remove SENSOR ROTARY HOME POSI. (p.382)
15. Remove FRAME ASSY-PH. (p.327)
24) 25)
16. Remove BCR CLN XERO ASSY. (p.373)
24)
17. Remove SENSOR TR-0. (p.361)
18. Remove GUIDE CRU ASSY D. (p.362)
19. Remove GUIDE CRU ASSY AD. (p.367)
25)
20. Remove HOUSING ASSY-DEVE. (p.383) 23)
21. Remove the 3 screws (silver, with flange, 6 mm) fastening BRACKET ASSY 23)
2ND GEAR to the main unit.
22. Remove BRACKET ASSY 2ND GEAR and GEAR 2ND from the main unit. Leg_Sec03_096EB
Figure 4-95. Removal of FRAME ASSY-ROTARY
23. Remove the 2 screws (silver, with flange, 6 mm) fastening SHAFT ASSY-
ROTARY on the right side of the main unit.

DISASSEMBLY AND ASSEMBLY DEVE 386

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 EPSON AcuLaser C1100 Revision B

24. Remove the 2 screws (silver, with flange, 6 mm) fastening SHAFT ASSY- 14. Remove SENSOR ROTARY HOME POSI. (p.382)
ROTARY on the left side of the main unit. 15. Attach LATCH ASSY-ROTARY. (p.378)
25. Remove SHAFT ASSY-ROTARY from both sides of the main unit. 16. Attach MOT ASSY MAG. (p.396)
C A U T IO N When performing the following work, take care not to drop or lose 17. Attach DRIVE ASSY PRO. (p.394)
BEARING BALL.
18. Attach CHASSIS ASSY ESS. (p.411)
19. Attach LV/HVPS. (p.407)

26. Remove FRAME ASSY-ROTARY upwards together with BEARING BALL. 20. Attach PWBA MCU. (p.404)

27. Remove BEARING BALL from FRAME ASSY-ROTARY. 21. Attach COVER INNER TOP. (p.299)
22. Attach COVER FRONT L and COVER FRONT ASSY U. (p.292)
23. Attach COVER MSI. (p.291)

REINSTALLATION 24. Attach COVER ASSY LH. (p.295)

25. Attach 2ND BTR ASSY. (p.348)
1. Attach BEARING BALL to FRAME ASSY-ROTARY.
26. Attach COVER ASSY TOP. (p.283)
2. Match with the attachment position and attach so that the gear of FRAME ASSY-
ROTARY is at the left side. 27. Attach COVER ASSY RH. (p.301)

3. Insert the shaft of SHAFT ASSY-ROTARY into the hole on FRAME ASSY-
ROTARY, and fasten FRAME ASSY-ROTARY to the main unit.
4. Fasten SHAFT ASSY-ROTARY on the left side of the main unit with the 2 screws
(silver, with flange, 6 mm).
5. Fasten SHAFT ASSY-ROTARY on the right side of the main unit with the 2
screws (silver, with flange, 6 mm).
6. Attach BRACKET ASSY 2ND GEAR and GEAR 2ND to the main unit.
7. Fasten BRACKET ASSY 2ND GEAR to the main unit with the 3 screws (silver,
with flange, 6 mm).
8. Attach HOUSING ASSY-DEVE. (p.383)
9. Attach GUIDE CRU ASSY AD. (p.367)
10. Attach GUIDE CRU ASSY D. (p.362)
11. Attach SENSOR TR-0. (p.361)
12. Attach BCR CLN XERO ASSY. (p.373)
13. Attach FRAME ASSY-PH. (p.327)

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 EPSON AcuLaser C1100 Revision B

4.9 FUSER COVER

TOP 6)-1
4.9.1 FUSER ASSY SIDE L
C A U T IO N Take care when handling the FUSER as it is hot. Take care not to 6)-1
burn yourself.

REMOVAL
6)-2
1. In the case of the DUPLEX specification, press LINK-BUTTON upwards, release
the latch, and open DUPLEX ASSY.
2. In the case of the standard specification, open COVER FUSER.
3. Open COVER ASSY TOP.
4. Remove COVER TOP SIDE L. (p.286)
5. Close COVER ASSY TOP.
6. Lift up the levers on both sides of FUSER ASSY, and unlock the lock to remove
FUSER ASSY.
7. With Chute on FUSER ASSY open, draw out the shaft of Actuator, and remove
Actuator together with Spring.
8. Remove Spring from Actuator.

Leg_Sec03_097EB
Figure 4-96. Removal of FUSER ASSY

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

1. Attach Spring to Actuator.

2. With Chute on FUSER ASSY open, insert the shaft of Actuator to the main unit,
and attach together with Spring.
3. Match the connector and the boss on the FUSER ASSY side with the connector
and the hole on the main unit side, and attach FUSER ASSY.
4. Return the levers on both sides of FUSER ASSY, and firmly lock on the main unit.
5. Open COVER ASSY TOP.
6. Attach COVER TOP SIDE L. (p.286)

C A U T IO N COVER TOP SIDE L cannot be attached on the main unit unless

the lever on FUSER ASSY is firmly locked.

7. Close COVER ASSY TOP.

8. In the case of the standard specification, close COVER FUSER.
9. In the case of the DUPLEX specification, close DUPLEX ASSY.

C A U T IO N When replaced FUSER ASSY with a new one, clear the life counter
to zero. (Refer to “6.3.1 Maintenance Menu Items” (p497))

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 EPSON AcuLaser C1100 Revision B

4.9.2 FUSER LOCK SWITCH

REMOVAL

1. Remove FUSER ASSY. (p.388)

2. Remove COVER ASSY LH. (p.295)
3. Remove CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)

C A U T IO N When performing the following work, leave the intermediate 5)-1

connector on the harness side. 4)

4. Disconnect the connector (P/J128, blue) from FUSER LOCK SWITCH.

5. Unclamp the two clamps fastening the harness on FUSER LOCK SWITCH to 6)
remove the harness, and put the connector of FUSER LOCK SWITCH to the
inside the main unit from the hole on the main unit.

C A U T IO N When performing the following, take care not to damage FUSER 5)-1
LOCK SWITCH by falling or dropping it.

6. Remove the screw (silver, with flange, tapping, 6 mm) fastening FUSER LOCK
SWITCH to the main unit. 7) 5)-2
7. Slide FUSER LOCK SWITCH to the right, unhook the hook on FUSER LOCK
SWITCH from the hole on the main unit, and remove FUSER LOCK SWITCH.

Leg_Sec03_519EA
Figure 4-97. Removal of FUSER LOCK SWITCH

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

C A U T IO N When performing the following, take care not to damage FUSER

LOCK SWITCH by falling or dropping it.

1. Match the protrusion and hook on FUSER LOCK SWITCH with the hole on the
main unit, slide FUSER LOCK SWITCH to the left, and attach FUSER LOCK
SWITCH.
2. Putting your hand beneath FUSER LOCK SWITCH to prevent it from dropping,
fasten FUSER LOCK SWITCH with the screw (silver, with flange, tapping, 6
mm).
3. Bring out the connector on FUSER LOCK SWITCH to the outside from the hole
on the main unit.
4. Attach the connector (P/J128, blue) to FUSER LOCK SWITCH, and fasten the
harness on FUSER LOCK SWITCH with the two clamps.
5. Attach CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)
6. Attach COVER ASSY LH. (p.295)
7. Attach FUSER ASSY. (p.388)

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 EPSON AcuLaser C1100 Revision B

4.9.3 HARNESS ASSY MCU C/L

7)-2
REMOVAL
7)-1
1. Remove FUSER ASSY. (p.388)
2. Remove COVER ASSY LH. (p.295) 6)-1
3. Remove CHASSIS ASSY ESS. (p.411)
4. Disconnect the connector (black-and-white) from PWBA FUSER CONT.
5) 6)-2
5. Disconnect connector (P417) from PWBA MCU.
6. Remove the 2 screws (silver, with flange, 6 mm) fastening BRACKET-RIZ to the
main unit, remove the harness from the clamp, and remove BRACKET-RIZ from
the main unit. 6)-1
7. Draw out HARNESS ASSY MCU C/L from BRACKET-RIZ while pressing the
claw on HARNESS ASSY MCU C/L.

C A U T IO N The claw on HARNESS ASSY MCU C/L is easily broken. Take

care not to press it too much.
6)-2

4)

REINSTALLATION

1. Insert the claw on HARNESS ASSY MCU C/L into the hole on BRACKET-RIZ
to attach.
2. Fasten BRACKET-RIZ to the main unit with the 2 screws (silver, with flange, 6
mm), and fasten each harness with the clamps. Leg_Sec03_520EB
Figure 4-98. Removal of HARNESS ASSY MCU C/L
3. Attach the harness (yellow) to the connector (P417) on PWBA MCU.
4. Connect the harness (black-and-white) to PWBA FUSER CONT.
5. Attach CHASSIS ASSY ESS. (p.411)
6. Attach COVER ASSY LH. (p.295)
7. Attach FUSER ASSY. (p.388)

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 EPSON AcuLaser C1100 Revision B

4.10 DRIVE

4.10.1 DRIVE ASSY BTR

REMOVAL

1. Remove 2ND BTR ASSY. (p.348)

2. Remove COVER ASSY LH. (p.295)
3. Remove PWBA MCU. (p.404)
4. Remove CHASSIS ASSY ESS. (p.411)
5. Remove SENSOR TR-0. (p.361)
6. Remove GUIDE CRU ASSY D. (p.362)
7. Remove CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)
8. Remove the 2 screws (silver, with flange, 6mm) fastening DRIVE ASSY BTR to
the main unit. 8)
9. Remove DRIVE ASSY BTR from the main unit.

9) 8)
REINSTALLATION
Leg_Sec03_098FA

1. Match the shaft on DRIVE ASSY BTR with the hole on the main unit, and attach Figure 4-99. Removal of DRIVE ASSY BTR
DRIVE ASSY BTR.
2. Fasten DRIVE ASSY BTR to the main unit with the 2 screws (silver, with flange,
6mm).
3. Attach CHUTE ASSY-FSR and COVER ASSY-RR 2ND. (p.341)
4. Attach GUIDE CRU ASSY D. (p.362)
5. Attach SENSOR TR-0. (p.361)
6. Attach CHASSIS ASSY ESS. (p.411)
7. Attach PWBA MCU. (p.404)
8. Attach COVER ASSY LH. (p.295)
9. Attach 2ND BTR ASSY. (p.348)

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 EPSON AcuLaser C1100 Revision B

4.10.2 DRIVE ASSY PRO 7)

5)
REMOVAL

1. Remove COVER ASSY LH. (p.295) 6)

6)
2. Remove OP PANEL. (p.294)
3. Remove COVER INNER TOP. (p.299)
6)
4. Disconnect connector (P/J411,P/J414) from the PWBA MCU. 6)
5. Unclamp the harness on DRIVE ASSY PRO on the left side of the main unit from
the clamp. If the harness is difficult to remove, remove PWBA MCU. (p.404)
6. Remove the 4 screws (silver, with flange, 6 mm) fastening DRIVE ASSY PRO to
the main unit.
7. Remove DRIVE ASSY PRO from the main unit.

REINSTALLATION

1. Inset the motor section and harness on DRIVE ASSY PRO into the hole on the
main unit, match the hole on DRIVE ASSY PRO with the boss on the main unit,
and attach DRIVE ASSY PRO.
2. Fasten DRIVE ASSY PRO to the main unit with the 4 screws (silver, with flange,
6 mm).
3. Fasten the harness on DRIVE ASSY PRO with the clamp on the left side of the
main unit.
4. Connect connector (P/J411,P/J414) to the PWBA MCU.
5. Attach COVER INNER TOP. (p.299)
6. Attach OP PANEL. (p.294) Leg_Sec03_099EA
Figure 4-100. Removal of DRIVE ASSY PRO
7. Attach COVER ASSY LH. (p.295)

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 EPSON AcuLaser C1100 Revision B

4.10.3 MOT ASSY FSR

2)
REMOVAL

1. Remove COVER ASSY LH. (p.295)

2. Disconnect connector (P/J404) from the PWBA MCU.
3. Unclamp the clamp fastening the harness on MOT ASSY FSR and remove the
harness.
4. Remove the 2 screws (silver, with flange, 4mm) fastening MOT ASSY FSR to the 3)
main unit.
5. Remove MOT ASSY FSR from the main unit.

REINSTALLATION

1. Attach MOT ASSY FSR to the main unit.

2. Fasten MOT ASSY FSR to the main unit with the 2 screws (silver, with flange,
4mm). 5)
3. Connect the (P/J404) to the PWBA MCU.
4. Fasten the harness of MOT ASSY FSR with the clamp.
5. Attach COVER ASSY LH. (p.295)
4)
Table 4-4. Symptoms when the connector is loose
Connector Error Caused by Connector 4)
Panel Indication Symptom
No. Disconnection
Jam C, E, F Paper Jam at 2nd
P/J404 ---
Jam D, F BTR section

Leg_Sec03_100FA
Figure 4-101. Removal of MOT ASSY FSR

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 EPSON AcuLaser C1100 Revision B

4.10.4 MOT ASSY MAG

REMOVAL

1. Remove COVER ASSY LH. (p.295)

C H E C K When performing the following work, the connector of PWBA ESS

P O IN T does not need to be removed.
3)

2. Remove CHASSIS ASSY ESS. (p.411)

3)
3. Disconnect connector (P/J405) and connector (P/J406) from PWBA MCU.
4. Remove the 3 screws (silver, with flange, 10 mm) fastening MOT ASSY MAG to
the main unit. 4)
5. Remove MOT ASSY MAG from the main unit. 4)

4)
REINSTALLATION 5)
1. Match the boss on MOT ASSY MAG with the hole on the main unit, and attach.
2. Fasten MOT ASSY MAG to the main unit with the 3 screws (silver, with flange,
10 mm).
3. Connect connector (P/J405) and connector (P/J406) to PWBA MCU.
4. Attach CHASSIS ASSY ESS. (p.411)
Leg_Sec03_102FA
5. Attach COVER ASSY LH. (p.295)
Figure 4-102. Removal of MOT ASSY MAG
Table 4-5. Symptoms when the connector is loose
Connector Error Caused by Connector
Panel Indication Symptom
No. Disconnection
Printed light and
P/J405 --- ---
faint
P/J406 --- Normal printing ---

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 EPSON AcuLaser C1100 Revision B

4.10.5 MOT ASSY ROT CAUTION

REMOVAL
FFC-ASSY
ESS
1. Remove COVER ASSY RH. (p.301)
WIRE
2. Remove COVER ASSY LH. (p.295) ASSY BTR
3. Remove COVER MSI. (p.291) WIRE ASSY
4. Remove COVER FRONT L and COVER FRONT ASSY U. (p.292) DEVE

5. Remove LV/HVPS. (p.407) 6)

6. Unclamp the clamp fastening WIRE ASSY DEVE, and remove WIRE ASSY
DEVE.
7. Disconnect connector (P/J433) from PWB ASSY ROT.
8. Remove the 4 screws (silver, with flange, 6 mm) fastening MOT ASSY ROT to
the main unit.
9. Remove MOT ASSY ROT from the main unit.

REINSTALLATION

When doing the following work, take care so that WIRE ASSY FFC-ASSY
C A U T IO N
DEVE, WIRE ASSY BTR, and FFC-ASSY ESS are not sandwiched ESS
between the main unit and MOT ASSY ROT.
9)
1. Match the boss on MOT ASSY ROT with the hole on the main unit, and attach.
2. Fasten MOT ASSY ROT to the main unit with the 4 screws (silver, with flange, 6
8)
mm).
8) 7)
3. Connect connector (P/J433) to PWB ASSY ROT. 8)
4. Fasten WIRE ASSY DEVE with the clamp. 8)
5. Attach LV/HVPS. (p.407)
6. Attach COVER FRONT L and COVER FRONT ASSY U. (p.292)
7. Attach COVER MSI. (p.291) Leg_Sec03_101EB

8. Attach COVER ASSY LH. (p.295) Figure 4-103. Removal of MOT ASSY ROT
9. Attach COVER ASSY RH. (p.301)

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 EPSON AcuLaser C1100 Revision B

4.10.6 MOT ASSY P/R

C A U T IO N Step numbers with [ ] in the figure indicate the step of [1)-1]
reinstallation.

2)
REMOVAL

1. Remove COVER ASSY LH. (p.295) 4)

2. Disconnect connector (P/J200) and connector (P/J201) from MOT ASSY P/R.
3)
3. Remove the 4 screws (silver, with flange, 10 mm) fastening MOT ASSY P/R to 3)
the main unit.
4. Remove MOT ASSY P/R from the main unit. 3)
[1)-2]
3)

REINSTALLATION

1. Attach MOT ASSY P/R to the main unit while lightly pressing LINK-
COUPLING.
2. Fasten MOT ASSY P/R to the main unit with the 4 screws (silver, with flange, 10
mm). Leg_Sec03_103FA
Figure 4-104. Removal of MOT ASSY P/R
C A U T IO N Lightly open/close COVER ASSY TOP, and check operation of the
coupling on MOT ASSY P/R.

3. Attach connector (P/J200) and connector (P/J201) to MOT ASSY P/R.

4. Attach COVER ASSY LH. (p.295)

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 EPSON AcuLaser C1100 Revision B

4.10.7 MOT ASSY MICRO

REMOVAL

1. Remove COVER ASSY LH. (p.295)

2. Unclamp the clamp fastening the harness on MOT ASSY MICRO. 3)
2)
3. Disconnect connector (P/J600) from MOT ASSY MICRO.
4. Remove the 2 screws (silver, with flange, 4mm) fastening MOT ASSY MICRO to
the main unit.
2)
5. Remove MOT ASSY MICRO from the main unit.
4)

REINSTALLATION
5) 4)
C A U T IO N When performing the following work, pay attention to the
attachment direction of MOT ASSY MICRO.

1. Attach MOT ASSY MICRO to the main unit with the harness on MOT ASSY
MICRO facing the rear side.
2. Fasten MOT ASSY MICRO to the main unit with the 2 screws (silver, with flange,
4mm).
3. Connect connector (P/J600) to MOT ASSY MICRO.
4. Fasten the harness on MOT ASSY MICRO with the clamp.
5. Attach COVER ASSY LH. (p.295)

Leg_Sec03_104FA
Figure 4-105. Removal of MOT ASSY MICRO

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 EPSON AcuLaser C1100 Revision B

4.11 ELEC

4.11.1 SENSOR HUM & TEMP

REMOVAL

1. Remove COVER ASSY RH. (p.301) 3)

2. Disconnect connector (P/J104) from SENSOR HUM & TEMP.
2) 4)
3. Remove the screw (silver, with flange, tapping, 8 mm) fastening SENSOR HUM
& TEMP to the main unit.
4. Remove SENSOR HUM & TEMP from the main unit.

REINSTALLATION

1. Attach SENSOR HUM & TEMP to the main unit.

2. Fasten SENSOR HUM & TEMP to the main unit with the screw (silver, with
flange, tapping, 8 mm).
3. Connect the connector (P/J104) to SENSOR HUM & TEMP.
Leg_Sec03_107EA
4. Attach COVER ASSY RH. (p.301)
Figure 4-106. Removal of SENSOR HUM & TEMP
Table 4-6. Symptoms when the connector is loose
Connector Error Caused by Connector
Panel Indication Symptom
No. Disconnection
Printing is not
P/J104 Service Req E530 Sensor HUM & TEMP error
possible.

DISASSEMBLY AND ASSEMBLY ELEC 400

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 EPSON AcuLaser C1100 Revision B

4.11.2 PWBA HVPS

C A U T IO N Avoid staticky places such as on a carpet especially when removing
or inserting a Board. Before starting work with the Board, make
sure to touch metallic portion of the printer connected to the earth
to let your body come out free of static electricity.

REMOVAL

1. Remove COVER ASSY RH. (p.301)

8)
2. Remove COVER ASSY LH. (p.295) 7)
7)
3. Remove COVER MSI. (p.291)
4. Remove COVER FRONT L and COVER FRONT ASSY U. (p.292)
5. Remove COVER INNER L. (p.302) 7) 6)
6. Disconnect connector (P/J516) from PWBA HVPS, and remove WIRE ASSY 7) 6)
2BTR, WIRE ASSY IBT and WIRE ASSY DTN (white). 6)
6)
7. Remove the 4 screws (silver, with flange, 6 mm) fastening PWBA HVPS to the Leg_Sec03_105EB
main unit. Figure 4-107. Removal of PWBA HVPS
8. Remove PWBA HVPS from the main unit.
Table 4-7. Symptoms when the connector is loose
REINSTALLATION Connector Error Caused by Connector
Panel Indication Symptom
No. Disconnection
1. Attach PWBA HVPS to the main unit. Printed light and
F (505) --- ---
2. Fasten PWBA HVPS to the main unit with the 4 screws (silver, with flange, 6 faint
mm). G (506) --- Normal printing ---

3. Connect connector (P/J516) to PWBA HVPS, and attach WIRE ASSY 2BTR,
WIRE ASSY IBT and WIRE ASSY DTN (white).
4. Attach COVER INNER L. (p.302)
5. Attach COVER FRONT L and COVER FRONT ASSY U. (p.292)
6. Attach COVER MSI. (p.291)
7. Attach COVER ASSY LH. (p.295)
8. Attach COVER ASSY RH. (p.301)

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 EPSON AcuLaser C1100 Revision B

4.11.3 PWB ASSY ROT

C A U T IO N Avoid staticky places such as on a carpet especially when removing

or inserting a Board. Before starting work with the Board, make
sure to touch metallic portion of the printer connected to the earth
to let your body come out free of static electricity.

REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Remove COVER ASSY LH. (p.295) 7)
6)
3. Remove COVER MSI. (p.291)
4. Remove COVER FRONT L and COVER FRONT ASSY U. (p.292)
5. Disconnect connector (P/J430), connector (P/J432) and connector (P/J433) from
6)
PWB ASSY ROT.
6)
6. Remove the 4 screws (silver, with flange, 6 mm) fastening PWB ASSY ROT to 5)
the main unit. 6)
Leg_Sec03_106FA
7. Remove PWB ASSY ROT from the main unit. Figure 4-108. Removal of PWB ASSY ROT

REINSTALLATION

1. Attach PWB ASSY ROT to the main unit.

2. Fasten PWB ASSY ROT to the main unit with the 4 screws (silver, with flange, 6
mm).
3. Connect connector (P/J430), connector (P/J432) and connector (P/J433) to PWB
ASSY ROT.
4. Attach COVER FRONT L and COVER FRONT ASSY U. (p.292)
5. Attach COVER MSI. (p.291)
6. Attach COVER ASSY LH. (p.295)
7. Attach COVER ASSY RH. (p.301)

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 EPSON AcuLaser C1100 Revision B

4.11.4 PWBA CRUM 6. Attach COVER FRONT L and COVER FRONT ASSY U. (p.292)
7. Attach COVER MSI. (p.291)
C A U T IO N When the printer is turned on after replacing either the PWBA 8. Attach COVER ASSY LH. (p.295)
MCU or the PWBA CRUM, the information that specific to each
printer unit is automatically stored on a memory of replaced circuit 9. Attach COVER ASSY RH. (p.301)
board. Due to this reason, the board becomes unique to specific Do not replace both PWBA CRUM and PWBA MCU at a time.
printer unit, and the board is no longer usable on another printer C A U T IO N
unit. Do not reuse the board that previously installed on another
printer unit.

REMOVAL

1. Remove COVER ASSY RH. (p.301)

2. Remove COVER ASSY LH. (p.295)
3. Remove COVER MSI. (p.291)
4. Remove COVER FRONT L and COVER FRONT ASSY U. (p.292)
5. Remove LV/HVPS. (p.407)
6. Remove MOT ASSY ROT. (p.397)
7. Remove the screw (silver, with flange, 8mm) fastening PWBA CRUM to the main
unit. 7)
8. Disconnect connector (P/J429) from PWBA CRUM.
9) 8)
9. Remove PWBA CRUM from the main unit.

REINSTALLATION

1. Attach PWBA CRUM to the main unit.

2. Connect connector (P/J429) to PWBA CRUM.
3. Fasten PWBA CRUM to the main unit with the screw (silver, with flange, tapping,
8mm). Leg_Sec03_108FA

4. Attach MOT ASSY ROT. (p.397) Figure 4-109. Removal of PWBA CRUM
5. Attach LV/HVPS. (p.407)

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 EPSON AcuLaser C1100 Revision B

4.11.5 PWBA MCU

† When using the old PWBA MCU

REMOVAL

1. Remove COVER ASSY LH. (p.295)

2. Disconnect all connectors from the PWBA MCU.
3. Remove the 4 screws (silver, with flange, 6mm) fastening PWBA MCU to the
main unit.
4)
3)
4. Remove PWBA MCU from the main unit.

3)
3)
REINSTALLATION

1. Attach PWBA MCU to the main unit. 3)

2. Fasten PWBA MCU to the main unit with the 4 screws (silver, with flange, 6 mm).
3. Connect all connectors to the PWBA MCU. 403 404 417 418 422 416

4. Attach COVER ASSY LH. (p.295) 414

405 415
408
409 412
421
411
406 407 410 413 420

2) 400 401

Leg_Sec03_110EB
Figure 4-110. Removal of PWBA MCU

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 EPSON AcuLaser C1100 Revision B

† When replacing PWBA MCU with a new one 4. Disconnect all connectors from the PWBA MCU.

The life information of the replacement parts, correction parameters, etc are stored in 5. Remove the 4 screws (silver, with flange, 6mm) fastening PWBA MCU to the
EEPROM on the MCU board (PWBA MCU). The EEPROM was mounted in IC main unit.
socket of the MCU board on previous models, whereas the EEPROM of this product is 6. Remove PWBA MCU from the main unit.
soldered directly on the MCU board and it is quite difficult to replace it. Therefore,
when the PWBA MCU is replaced with a new one, the data in the EEPROM must be
backed-up and re-stored to the EEPROM on the new MCU board. REINSTALLATION

1. Attach PWBA MCU to the main unit.

C A U T IO N † When the printer is turned on after replacing either the PWBA
2. Fasten PWBA MCU to the main unit with the 4 screws (silver, with flange, 6 mm).
MCU or the PWBA CRUM, the information that specific to each
printer unit is automatically stored on a memory of replaced 3. Connect all connectors to the PWBA MCU.
circuit board. Due to this reason, the board becomes unique to
4. Attach COVER ASSY LH. (p.295)
specific printer unit, and the board is no longer usable on
another printer unit. Do not reuse the board that previously 5. To enter the maintenance mode, while holding down the [Back], [Up], [Down] and
installed on another printer unit. [Enter] buttons, turn the printer on.
† When replacing the PWBA MCU, verify that the version of
6. Execute the “MCU DATA Restore” in the maintenance menu to write the data
firmware on new PWBA MCU matches the version of previous
onto a new PWBA MCU.
PWBA MCU. If not, be sure to make them matches each other
by either upgrading or downgrading the firmware. Make sure to
execute [MCU Data Restore] in the MAINTENANCE menu only C A U T IO N Once the restoring has started, do not turn the printer's power off
after matching the firmware version. until the engine stops.

REMOVAL

1. To enter the maintenance mode, while holding down the [Back], [Up], [Down] and
[Enter] buttons, turn the printer on.
2. Execute the “MCU DATA BackUp” in the maintenance menu to temporarily store
the data stored in the old EEPROM on PWBA MCU.

C A U T IO N † When printer is in the following condition, [MCU DATA

BackUp] and [MCU DATA Restore] cannot be executed.
„ During power-save mode
„ During warming up
„ During printing
„ During adjustment
† Once the backup has started, do not turn the printer's power off
until the engine stops.
3. Remove COVER ASSY LH. (p.295)

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 EPSON AcuLaser C1100 Revision B

Table 4-8. Symptoms when the connector is loose Table 4-8. Symptoms when the connector is loose
Connector Error Caused by Connector Connector Error Caused by Connector
Panel Indication Symptom Panel Indication Symptom
No. Disconnection No. Disconnection
Printing is not Printing is not
P/J400 --- --- P/J418 F Open Housing Chute Fuser is open.
possible. possible.
Printing is not Printing is not
P/J401 Service Req E537 Fuser error P/J421 Service Req E547 Paper Feeder error
possible. possible.
Printing is not Printing is not
P/J403 C Open The Cover Fuser is open. P/J422 Service Req E526 Sensor ADC error
possible. possible.
Jam C, E, F Paper Jam at 2nd
P/J404 ---
Jam E, F BTR
Printed light and
P/J405 --- ---
faint
P/J406 --- Normal printing ---
Printing is not
P/J407 Service Req E510 ROS Motor error
possible.
Printing is not
P/J408 E Open Paper Feeder Rear Cover is open.
possible.
Printing is not
P/J409 --- Sensor TR0 error
possible.
The printer does
P/J410 --- ---
not work
P/J411 --- Normal printing ---
Printing is not
P/J412 Service Req E513 NVM error
possible.
Printing is not
P/J413 Service Req E533 Temperature sensor error
possible.
Printing is not
P/J414 --- ---
possible.
Printing is not
P/J415 A Open COVER FRONT ASSY U is open.
possible.
Install Printing is not
P/J416 IBT Assy error
Photocondctr possible.
Printing is not
P/J417 --- Fuser error
possible.

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 EPSON AcuLaser C1100 Revision B

4.11.6 LV/HVPS
2) 500 502 501

C A U T IO N Avoid staticky places such as on a carpet especially when removing

or inserting a Board. Before starting work with the Board, make 515
sure to touch metallic portion of the printer connected to the earth
to let your body come out free of static electricity. 504
(1BTR)

REMOVAL
508
1. Remove COVER ASSY LH. (p.295) (BCR)

2. Disconnect all connectors from the LV/HVPS. 509

(DEVE)
503
3. Remove the 6 screws (silver, with flange, 6 mm) fastening LV/HVPS to the main (Blue)
unit.
4. Remove the top part of LV/HVPS from the protrusion of the bracket attached to
the main unit while taking out the front side of LV/HVPS from between the main
unit and COVER FRONT L, and remove LV/HVPS. 4)-1
3)

REINSTALLATION 3)
3)
1. Put the top part of LV/HVPS inside the protrusion of the bracket while inserting
the front side of LV/HVPS in between the main unit frame and COVER FRONT L
to attach LV/HVPS.
2. Fasten LV/HVPS to the main unit with the 6 screws (silver, with flange, 6 mm). 3) 4)-2
3. Connect all connectors to the LV/HVPS.
4. Attach COVER ASSY LH. (p.295)
3)

3) Leg_Sec03_111EB
Figure 4-111. Removal of LV/HVPS

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 EPSON AcuLaser C1100 Revision B

Table 4-9. Symptoms when the connector is loose

Connector Error Caused by Connector
Panel Indication Symptom
No. Disconnection
Control panel is
P/J501 --- ---
not available.
Printing is not
P/J502 --- ---
possible.
Main power is not
P/J503 --- ---
supplied.
Printed light and
D (504) --- ---
faint
Entire surface
A (508) --- ---
printed black
Printed light and
C (509) --- ---
faint
Printed light and
P/J515 --- ---
faint

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 EPSON AcuLaser C1100 Revision B

4.11.7 PWBA ESS (BOARD ASSY., MAIN)

C A U T IO N Avoid staticky places such as on a carpet especially when removing
or inserting a Board. Before starting work with the Board, make
sure to touch metallic portion of the printer connected to the earth
to let your body come out free of static electricity.

REMOVAL

1. Remove COVER ASSY LH. (p.295)

2. Disconnect all connectors from the PWBA ESS.
3. Remove the 4 screws (silver, with flange, 6 mm) fastening PWBA ESS to 3)
CHASSIS ESS and the screws fastening the interface connectors.
3) 3)
4. Remove PWBA ESS while disconnecting the interface connectors on PWBA ESS
and removing them through the hole on CHASSIS ESS.
3) 2)
3) 3)
3)
REINSTALLATION 4) 3)
1. First insert the interface connector of PWBA ESS into the hole on CHASSIS ESS 2)
and then attach PWBA ESS. 3)
2. Fasten PWBA ESS to CHASSIS ESS with the 4 screws (silver, with flange, 6 mm)
Leg_Sec03_109EA
and the screws fastening the interface connectors.
Figure 4-112. Removal of PWBA ESS
3. Connect all connectors to the PWBA ESS.
4. Attach COVER ASSY LH. (p.295) Table 4-10. Symptoms when the connector is loose
Connector Error Caused by Connector
Panel Indication Symptom
No. Disconnection
Printing is not
CN405 --- ---
possible.
Printing is not
CN501 --- ---
possible.
Paper is ejected
CN502 --- ---
without printing.
Printing is not
CN601 --- ---
possible.

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 EPSON AcuLaser C1100 Revision B

4.11.8 PWBA FUSER CONT

C A U T IO N Avoid staticky places such as on a carpet especially when removing
or inserting a Board. Before starting work with the Board, make
sure to touch metallic portion of the printer connected to the earth
to let your body come out free of static electricity.

REMOVAL

1. Remove COVER ASSY LH. (p.295)

2. Remove CHASSIS ASSY ESS. (p.411)
3)
3. Disconnect all connectors from the PWBA FUSER CONT.
3) 4)
4. Remove the 2 screws (silver, with flange, 8mm) fastening PWBA FUSER CONT
to the main unit. 6) 3)
5. Remove the screw (silver, with external toothed washer, 5 mm) fastening PWBA
FUSER CONT to the main unit. 4)
5)
6. Remove PWBA FUSER CONT from the main unit.

Leg_Sec03_113FB
REINSTALLATION
Figure 4-113. Removal of PWBA FUSER CONT
1. Match the boss and protrusion on PWBA FUSER CONT with the hole on the main
unit, and attach PWBA FUSER CONT.
2. Fasten PWBA FUSER CONT to the main unit with the screw (silver, with external
toothed washer, 5 mm).
3. Fasten PWBA FUSER CONT to the main unit with the 2 screws (silver, with
flange, 8mm).
4. Connect all connectors to the PWBA FUSER CONT.
5. Attach CHASSIS ASSY ESS. (p.411)
6. Attach COVER ASSY LH. (p.295)

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 EPSON AcuLaser C1100 Revision B

4.11.9 CHASSIS ASSY ESS (REFERENCE ONLY)

4)
C A U T IO N Avoid staticky places such as on a carpet especially when removing
or inserting a Board. Before starting work with the Board, make
sure to touch metallic portion of the printer connected to the earth
to let your body come out free of static electricity.

REMOVAL

1. Remove COVER ASSY LH. (p.295)

2. Disconnect all connectors from the PWBA ESS.
3. Remove disconnected connectors from the hole on CHASSIS ESS.
5)
4. Unclamp the clamp on CHASSIS ASSY ESS, and remove the harness.
5. Remove the 5 screws (silver, with flange, 6 mm) fastening CHASSIS ASSY ESS
to the main unit.
5)
6. Remove CHASSIS ASSY ESS from the main unit.
2)
3)
1) 5)
REINSTALLATION
5) 2)
6)
C A U T IO N When performing the following work, take care to prevent the 5)
harness from being sandwiched between the main unit and Leg_Sec03_114EB
CHASSIS ESS. Figure 4-114. Removal of CHASSIS ASSY ESS

1. Matched the protrusion on CHASSIS ASSY ESS with the hole on the main unit, Table 4-11. Symptoms when the connector is loose
and attach CHASSIS ASSY ESS. Connector Error Caused by Connector
Panel Indication Symptom
No. Disconnection
2. Fasten CHASSIS ASSY ESS to the main unit with the 5 screws (silver, with
Printing is not
flange, 6 mm). CN405 --- ---
possible.
3. Insert disconnected connectors from the hole on CHASSIS ESS. Printing is not
CN501 --- ---
possible.
4. Connect all connectors to the PWBA ESS.
Paper is ejected
5. Fasten the harness with the clamp on CHASSIS ASSY ESS. CN502 --- ---
without printing.
6. Attach COVER ASSY LH. (p.295) Printing is not
CN601 --- ---
possible.

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 EPSON AcuLaser C1100 Revision B

4.12 DUPLEX

4.12.1 DUPLEX ASSY

REMOVAL

C A U T IO N When performing the following, take care not to damage DUPLEX

ASSY by falling or dropping it.

1. Press LINK-BUTTON upward to release the latch and open DUPLEX ASSY.
2. Remove COVER CONNECTOR, and disconnect connector (P/J607) connected to
the main unit.
3)
3. Remove the 2 SCREW SUPPORTs fastening the left and right SUPPORT DUPs
to the main unit. 3)
4. Remove the 2 SCREW THUMBs fastening DUPLEX ASSY to the main unit.
5. Slightly lift up DUPLEX ASSY, unhook the both left and right hooks on
5)-2
DUPLEX ASSY from the holes on the main unit, and remove DUPLEX ASSY.
5)-1

REINSTALLATION 2)-1
1. Hook the left and right hooks on DUPLEX ASSY onto the holes on the main unit,
and attach DUPLEX ASSY.
2. Fasten DUPLEX ASSY to the main unit with the 2 SCREW THUMBs.
3. Fasten the left and right SUPPORT DUPs to the main unit with the 2 SCREW
SUPPORTs.
4. Connect connector (P/J607) connected to the main unit and attach COVER
2)-2
CONNECTOR.
4) 4)
5. Gently close DUPLEX ASSY.
Leg_Sec03_115EA
Figure 4-115. Removal of DUPLEX ASSY

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 EPSON AcuLaser C1100 Revision B

4.12.2 COVER-R DUP

REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove the 3 screws (silver, with flange, tapping, 10mm) fastening COVER-R
DUP to DUPLEX ASSY.
3. Remove COVER-R DUP from DUPLEX ASSY.
2)

2)
REINSTALLATION

C A U T IO N When performing the following work, take care to prevent the 2) Leg_Sec03_116EA
harness from being sandwiched between DUPLEX ASSY and 3)
COVER-R DUP. Figure 4-116. Removal of COVER-R DUP

1. Attach COVER-R DUP to DUPLEX ASSY.

2. Attach COVER-R DUP to DUPLEX ASSY with the 3 screws (silver, with flange,
tapping, 10mm).
3. Attach DUPLEX ASSY. (p.412)

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 EPSON AcuLaser C1100 Revision B

4.12.3 COVER-L DUP

REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove the 3 screws (silver, with flange, tapping, 10mm) fastening COVER-L 2)
DUP to DUPLEX ASSY.
3. Remove COVER-L DUP from DUPLEX ASSY.
2)

REINSTALLATION 2)
1. Attach COVER-L DUP to DUPLEX ASSY. Leg_Sec03_117EA

2. Attach COVER-L DUP to DUPLEX ASSY with the 3 screws (silver, with flange, 3)
tapping, 10mm). Figure 4-117. Removal of COVER-L DUP

3. Attach DUPLEX ASSY. (p.412)

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 EPSON AcuLaser C1100 Revision B

4.12.4 COVER-INV
7)-2
REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove COVER-R DUP. (p.413)
3. Remove COVER-L DUP. (p.414)
4. Remove LINK LATCH and LINK-BUTTON. (p.416)
5. Open COVER UP-DUP TRANS, and remove INVERTER ASSY DUP. Note that
COVER LOW-DUP TRANS and COVER UP-DUP TRANS need not be
removed. (p.417)
6. Remove the 2 screws (silver, with flange, tapping, 10mm) fastening COVER-INV 7)-1
to INVERTER ASSY DUP.
7. Slide COVER-INV to the front side, unhook the 4 holes on the rear of COVER-
INV from the hooks on INVERTER ASSY DUP, and remove COVER-INV.

REINSTALLATION

1. Match the 4 holes on the rear of COVER-INV with the hooks on INVERTER 6)
ASSY DUP, and attach COVER-INV. Leg_Sec03_119FA
6)
2. Attach COVER-INV to INVERTER ASSY DUP with the 2 screws (silver, with Figure 4-118. Removal of COVER-INV
flange, tapping, 10 mm).
3. Attach INVERTER ASSY DUP. (p.417)
4. Attach LINK LATCH and LINK-BUTTON. (p.416)
5. Attach COVER-L DUP. (p.414)
6. Attach COVER-R DUP. (p.413)
7. Attach DUPLEX ASSY. (p.412)

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 EPSON AcuLaser C1100 Revision B

4.12.5 LINK-LATCH, LINK-BUTTON

CAUTION
REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove COVER-R DUP. (p.413)
3. Unhook the hook fastening LINK-BUTTON to DUPLEX ASSY, and remove
LINK-BUTTON together with LINK-LATCH and SPRING-LINK.
4. Remove SPRING-LINK from LINK-BUTTON.
5. Turn LINK-LATCH, remove the protrusion on LINK-LATCH from the protrusion
on LINK-BUTTON, and remove LINK-LATCH.

REINSTALLATION
4)
3)-2
1. Attach LINK-LATCH to LINK-BUTTON, turn LINK-LATCH, and match the
protrusion on LINK-LATCH with the protrusion on LINK-BUTTON.
2. Attach SPRING-LINK to the boss on LINK-BUTTON. 3)-1

C A U T IO N When performing the following work, make sure to match

SPRING-LINK with the spring receptacle on FRAME-INV.

Leg_Sec03_120FA

Figure 4-119. Removal of LINK-LATCH and LINK-BUTTON (1)

3. Attach LINK-BUTTON to DUPLEX ASSY together with LINK-LATCH and
SPRING-LINK, and fasten by the hooks.
4. Attach COVER-R DUP. (p.413) 5)-1
5. Attach DUPLEX ASSY. (p.412)

5)-2

Leg_Sec03_121FA

Figure 4-120. Removal of LINK-LATCH and LINK-BUTTON (2)

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 EPSON AcuLaser C1100 Revision B

4.12.6 INVERTER ASSY DUP, TRANSPORT ASSY

DUP
13)
REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove COVER-R DUP. (p.413)
3. Remove COVER-L DUP. (p.414)
4. Remove LINK-LATCH and LINK-BUTTON. (p.416)
5. Remove COVER LOW-DUP TRANS. (p.436) 12)
12)
6. Remove COVER UP-DUP TRANS. (p.437)
7. Remove the screw (silver, with flange, tapping, 10mm) fastening COVER REAR
to DUPLEX ASSY.
10)
8. Slide COVER REAR to the right, unhook the 2 hooks on the rear of COVER
9)
REAR from DUPLEX ASSY, and remove COVER REAR.
9. Disconnect connector (P/J122) from SWITCH-DUP DOOR, and remove the 11)
harness from the hole on DUPLEX ASSY.
10. Unclamp the clamp on BKT MOTOR DUP TRANS, and remove the harness.
11. Disconnect connector (P/J444) from PWBA DUP-L.
12. Remove the 2 screws (silver, with flange, tapping, 10mm) fastening INVERTER 8)
ASSY DUP to TRANSPORT ASSY DUP. 7)
13. Slide INVERTER ASSY DUP to the left from TRANSPORT ASSY DUP, and
draw out each of the bosses from the holes to remove INVERTER ASSY DUP. Leg_Sec03_118FA
Figure 4-121. Removal of INVERTER ASSY DUP and TRANSPORT ASSY
DUP

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

1. Match each of the bosses and holes on INVERTER ASSY DUP with
TRANSPORT ASSY DUP, and attach INVERTER ASSY DUP to TRANSPORT
ASSY DUP.
2. Attach INVERTER ASSY DUP to TRANSPORT ASSY DUP with the 2 screws
(silver, with flange, tapping, 10mm).
3. Connect connector (P/J444) to PWBA DUP-L.
4. Route the harness, and fasten the harness by the clamp on BKT MOTOR DUP
TRANS.
5. Pass the harness through the hole on DUPLEX ASSY, and connect connector (P/
J122) to SWITCH-DUP DOOR.
6. Match the 2 hooks on the rear of COVER REAR with DUPLEX ASSY, and attach
COVER REAR.
7. Fasten COVER REAR to DUPLEX ASSY with the screw (silver, with flange,
tapping, 10 mm).
8. Attach COVER UP-DUP TRANS. (p.437)
9. Attach COVER LOW-DUP TRANS. (p.436)
10. Attach LINK-LATCH and LINK-BUTTON. (p.416)
11. Attach COVER-L DUP. (p.414)
12. Attach COVER-R DUP. (p.413)
13. Attach DUPLEX ASSY. (p.412)

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 EPSON AcuLaser C1100 Revision B

4.12.7 SOLENOID ASSY DUP

9)
REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove COVER-R DUP. (p.413)
7)
3. Remove COVER-L DUP. (p.414)
4. Remove LINK-LATCH and LINK-BUTTON. (p.416)
5. Open COVER UP-DUP TRANS, and remove INVERTER ASSY DUP. Note that
COVER LOW-DUP TRANS and COVER UP-DUP TRANS need not be 8)
removed. (p.417)
8)
6. Remove COVER-INV. (p.415)
7. Disconnect connector (P/J611) from SOLENOID ASSY DUP.
8. Remove the 2 screws (silver, 5mm) fastening SOLENOID ASSY DUP to
INVERTER ASSY DUP.
9. Remove SOLENOID ASSY DUP from INVERTER ASSY DUP.

REINSTALLATION

1. Insert the pin on SOLENOID ASSY DUP into the hole on INVERTER ASSY
DUP, and attach SOLENOID ASSY DUP. Leg_Sec03_122FA

2. Remove the 2 screws (silver, 5mm) fastening SOLENOID ASSY DUP to Figure 4-122. Removal of SOLENOID ASSY DUP
INVERTER ASSY DUP.

C A U T IO N After connecting the connectors on SOLENOID ASSY DUP, make

sure that HARNESS-ASSY DUP1 is firmly hooked on the hook on
FRAME-INV.

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 EPSON AcuLaser C1100 Revision B

3. Connect connector (P/J611) to SOLENOID ASSY DUP.

C A U T IO N When performing the following work, take care to prevent the

harness on SOLENOID ASSY DUP from being nipped.

4. Attach COVER-INV. (p.415)

5. Attach INVERTER ASSY DUP. (p.417)
6. Attach LINK-LATCH and LINK-BUTTON. (p.416)
7. Attach COVER-L DUP. (p.414)
8. Attach COVER-R DUP. (p.413)
9. Attach DUPLEX ASSY. (p.412)

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 EPSON AcuLaser C1100 Revision B

4.12.8 ACTUATOR INV

CAUTION
8)
REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove COVER-R DUP. (p.413)
7)-2
3. Remove COVER-L DUP. (p.414)
4. Remove LINK-LATCH and LINK-BUTTON. (p.416)
5. Open COVER UP-DUP TRANS, and remove INVERTER ASSY DUP. Note that 7)-1
COVER LOW-DUP TRANS and COVER UP-DUP TRANS need not be
removed. (p.417)
6. Remove COVER-INV. (p.415)
7. Unhook the hook fastening ACTUATOR INV to INVERTER ASSY DUP, and
remove ACTUATOR together with SPRING ACTUATOR.
8. Remove SPRING ACTUATOR from ACTUATOR INV.

REINSTALLATION

1. Attach SPRING ACTUATOR to ACTUATOR INV.

2. After inserting the left-side shaft of ACTUATOR into the hole on INVERTER
ASSY DUP, attach ACTUATOR INV together with SPRING ACTUATOR, and
fasten by the hook.

C A U T IO N SPRING ACTUATOR must be firmly hooked onto ACTUATOR

INV and DUPLEX ASSY.
Leg_Sec03_123FA
Figure 4-123. Removal of ACTUATOR INV

3. Attach COVER-INV. (p.415)

4. Attach INVERTER ASSY DUP. (p.417)
5. Attach LINK-LATCH and LINK-BUTTON. (p.416)
6. Attach COVER-L DUP. (p.414)
7. Attach COVER-R DUP. (p.413)
8. Attach DUPLEX ASSY. (p.412)

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 EPSON AcuLaser C1100 Revision B

4.12.9 SENSOR UPPER PASS

10)-2
REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove COVER-R DUP. (p.413)
3. Remove COVER-L DUP. (p.414)
4. Remove LINK-LATCH and LINK-BUTTON. (p.416)
10)-1
7)
5. Open COVER UP-DUP TRANS, and remove INVERTER ASSY DUP. Note that
COVER LOW-DUP TRANS and COVER UP-DUP TRANS need not be
removed. (p.417)
6. Remove COVER-INV. (p.415)
7. Remove the screw (silver, with flange, tapping, 10 mm) fastening BRACKET- 8)
SNS to INVERTER ASSY DUP.
8. Remove BRACKET-SNS from INVERTER ASSY DUP together with SENSOR
UPPER PASS.
9. Disconnect connector (P/J124) from SENSOR UPPER PASS.
10. Unhook the 3 hooks fastening SENSOR UPPER PASS to BRACKET-SNS, and
remove SENSOR UPPER PASS.

9)

Leg_Sec03_124FA
Figure 4-124. Removal of SENSOR UPPER PASS

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REINSTALLATION

1. Match the hook on SENSOR UPPER PASS with the attachment position, and
attach to BRACKET-SNS.
2. Connect connector (P/J124) to SENSOR UPPER PASS.
3. Match the hole on BRACKET-SNS with the boss on INVERTER ASSY DUP,
and attach BRACKET-SNS together with SENSOR UPPER PASS.
4. Attach BRACKET-SNS to INVERTER ASSY DUP with the screw (silver, with
flange, tapping, 10 mm).
5. Attach COVER-INV. (p.415)
6. Attach INVERTER ASSY DUP. (p.417)
7. Attach LINK-LATCH and LINK-BUTTON. (p.416)
8. Attach COVER-L DUP. (p.414)
9. Attach COVER-R DUP. (p.413)
10. Attach DUPLEX ASSY. (p.412)

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4.12.10 MOTOR ASSY DUP INV 6)

REMOVAL
6) 7)
1. Remove DUPLEX ASSY. (p.412) 6)
6)
2. Remove COVER-L DUP. (p.414)
3. Remove the 4 screws (silver, with flange, tapping, 10mm) fastening BRACKET-
MOTO INV to DUPLEX ASSY.
5)
C A U T IO N „ When performing the following work, take care not to remove
DUPLEX ASSY and BRACKET-MOTO INV too far as they
are connected by a harness.
„ When performing the following work, take care not to drop or
lose gears, and other parts.

4. Remove BRACKET-MOTO INV from DUPLEX ASSY together with MOTOR

ASSY DUP INV.
5. Disconnect connector (P/J612) of MOTOR ASSY DUP INV from BRACKET-
MOTO INV. 3)
6. Remove the 4 screws (silver, 5mm) fastening MOTOR ASSY DUP INV to 3)
BRACKET-MOTO INV.
3)
7. Remove MOTOR ASSY DUP INV from BRACKET-MOTO INV.
3)
4) Leg_Sec03_125FA
Figure 4-125. Removal of MOTOR ASSY DUP INV
REINSTALLATION

C A U T IO N When performing the following work, pay attention to the

attachment direction of MOTOR ASSY DUP INV.

1. Match the harness side of MOTOR ASSY DUP INV with the mark on
BRACKET-MOTO INV, and attach to MOTOR ASSY DUP INV.
2. Fasten MOTOR ASSY DUP INV to BRACKET-MOTO INV with the 4 screws
(silver, 5 mm).

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3. Connect connector (P/J612) of MOTOR ASSY DUP INV to BRACKET-MOTO

INV.

C A U T IO N When performing the following work, take care to prevent the

harness from being sandwiched between DUPLEX ASSY and
BRACKET-MOTO INV.

4. Match the hole on BRACKET-MOTO INV with the shaft on DUPLEX ASSY,
and attach together with MOTOR ASSY DUP INV.
5. Fasten BRACKET-MOTO INV to DUPLEX ASSY with the 4 screws (silver, with
flange, tapping, 10mm).
6. Attach COVER-L DUP. (p.414)
7. Attach DUPLEX ASSY. (p.412)

DISASSEMBLY AND ASSEMBLY DUPLEX 425

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 EPSON AcuLaser C1100 Revision B

4.12.11 ROLLER ASSY INVERTER 7. Attach COVER-L DUP. (p.414)

8. Attach COVER-R DUP. (p.413)
REMOVAL
9. Attach DUPLEX ASSY. (p.412)
1. Remove DUPLEX ASSY. (p.412)
2. Remove COVER-R DUP. (p.413) 6)-1
3. Remove COVER-L DUP. (p.414)
4. Remove LINK-LATCH and LINK-BUTTON. (p.416)
5. Remove CHUTE ASSY-INV LOW. (p.427) 7)
6. Unhook the hook on GEAR 30 fastened to ROLLER ASSY INVERTER from 8)
DUPLEX ASSY, and remove GEAR 30.
7. Remove the E-ring fastening the right side of ROLLER ASSY INVERTER from
DUPLEX ASSY. 8) 9)
8. Remove the left and right BEARING DUP fastening ROLLER ASSY
INVERTER from DUPLEX ASSY.
6)-2
9. Temporarily slide ROLLER ASSY INVERTER to the front and then slide to the
left, and draw out the shaft of ROLLER ASSY INVERTER from the right-side
bearing of DUPLEX ASSY to remove ROLLER ASSY INVERTER.

REINSTALLATION

1. Insert the shaft left side on ROLLER ASSY INVERTER into the left-side bearing Leg_Sec03_126FA
on DUPLEX ASSY, and slide ROLLER ASSY INVERTER to the right to attach. Figure 4-126. Removal of ROLLER ASSY INVERTER
2. Match the double D cut surface of BEARING DUP with the left and right bearings
of DUPLEX ASSY, attach BEARING DUP, and fasten ROLLER ASSY
INVERTER.
3. Fasten the right side of ROLLER ASSY INVERTER to DUPLEX ASSY with the
E-ring.
4. Match the hole on GEAR 30 with the D cut surface on ROLLER ASSY
INVERTER, fasten the hook on GEAR 30 with the groove on ROLLER ASSY
INVERTER, and attach.
5. Attach CHUTE ASSY-INV LOW. (p.427)
6. Attach LINK-LATCH and LINK-BUTTON. (p.416)
DISASSEMBLY AND ASSEMBLY DUPLEX 426

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 EPSON AcuLaser C1100 Revision B

4.12.12 CHUTE ASSY-INV LOW 3)

REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove the 2 screws (silver, with flange, tapping, 10mm) CHUTE ASSY-INV
LOW to DUPLEX ASSY.
2)
3. Remove CHUTE ASSY-INV LOW from DUPLEX ASSY.

2)
REINSTALLATION

1. Match the hole on CHUTE ASSY-INV LOW with the boss on DUPLEX ASSY,
and attach CHUTE ASSY-INV LOW.
2. Fasten CHUTE ASSY-INV LOW to DUPLEX ASSY with the 2 screws (silver,
with flange, tapping, 10mm).
3. Attach DUPLEX ASSY. (p.412)

Leg_Sec03_127FA
Figure 4-127. Removal of CHUTE ASSY-INV LOW

DISASSEMBLY AND ASSEMBLY DUPLEX 427

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 EPSON AcuLaser C1100 Revision B

4.12.13 LATCH DUP R, LATCH DUP L

REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove COVER-R DUP. (p.413)
3. Remove COVER-L DUP. (p.414)
4. Remove LINK-LATCH and LINK-BUTTON. (p.416)
5. Unclamp the clamp on BKT MOTOR DUP TRANS, and remove the harness.
6. Disconnect connector (P/J444) from PWBA DUP-L. 5)
7. Remove the 4 screws (silver, with flange, tapping, 10mm) fastening BKT
6)
MOTOR DUP TRANS to DUPLEX ASSY.

„ When performing the following work, take care not to remove 7)

C A U T IO N
DUPLEX ASSY and BKT MOTOR DUP TRANS too far as
they are connected by a harness. 7) 7)
„ When performing the following work, take care not to drop or
lose gears, and other parts. 7)
Leg_Sec03_128FB
8. Remove BKT MOTOR DUP TRANS from DUPLEX ASSY together with PWBA 8)
DUP-L and MOTOR ASSY DUP. Figure 4-128. Removal of LATCH DUP R and LATCH DUP L (1)
9. Remove SPRING LATCH from LATCH DUP R.
10. Remove the screw (silver, with flange, tapping, 10 mm) fastening LATCH DUP L
to DUPLEX ASSY.
11. Turn LATCH DUP R and LATCH DUP L, match the protrusions on LATCH
DUP R and LATCH DUP L with the notches of hole on DUPLEX ASSY, and
remove LATCH DUP R and LATCH DUP L.

DISASSEMBLY AND ASSEMBLY DUPLEX 428

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

1. Match the protrusions on LATCH DUP R and LATCH DUP L with the notches of
hole on DUPLEX ASSY, attach to SHAFT LATCH, turn LATCH DUP R and
LATCH DUP L, and fasten LATCH DUP R and LATCH DUP L to DUPLEX
ASSY.
2. Fasten LATCH DUP L to DUPLEX ASSY with the screw (silver, with flange,
tapping, 10 mm).
9)
3. Attach SPRING LATCH to LATCH DUP R.
4. Match the hole on BKT MOTOR DUP TRANS with the shaft on DUPLEX 11)-1
ASSY, and attach together with PWBA DUP-L and MOTOR ASSY DUP.
5. Fasten BKT MOTOR DUP TRANS to DUPLEX ASSY with the 4 screws (silver,
11)-2
with flange, tapping, 10mm).
6. Connect connector (P/J444) to PWBA DUP-L. 11)-1
7. Route the harness, and fasten the harness by the clamp on BKT MOTOR DUP
TRANS.
8. Attach LINK-LATCH and LINK-BUTTON. (p.416) 10)
11)-2
9. Attach COVER-L DUP. (p.414)
10. Attach COVER-R DUP. (p.413)
11. Attach DUPLEX ASSY. (p.412)
Leg_Sec03_129FA

Figure 4-129. Removal of LATCH DUP R and LATCH DUP L (2)

DISASSEMBLY AND ASSEMBLY DUPLEX 429

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4.12.14 SWITCH-DUP DOOR 2) 3)

REMOVAL
6)-1
1. Remove DUPLEX ASSY. (p.412)
4)
2. Remove the screw (silver, with flange, tapping, 10 mm) fastening COVER REAR
6)-2
from DUPLEX ASSY.
3. Slide COVER REAR to the right, unhook the 2 hooks on the rear of COVER
REAR from DUPLEX ASSY, and remove COVER REAR.
4. Disconnect connector (P/J122) from SWITCH-DUP DOOR.
5. Open COVER UP-DUP TRANS.
6. Unhook the two hooks fastening SWITCH-DUP DOOR to DUPLEX ASSY, and
remove SWITCH-DUP DOOR.

REINSTALLATION

1. Open COVER UP-DUP TRANS.

2. Match the hook on SWITCH-DUP DOOR with the attachment position, and attach
to DUPLEX ASSY.
3. Connect connector (P/J122) to SWITCH-DUP DOOR.
4. Match the 2 hooks on the rear of COVER REAR with DUPLEX ASSY, and attach
COVER REAR.
5. Fasten COVER REAR to DUPLEX ASSY with the screw (silver, with flange,
tapping, 10 mm).
6. Attach DUPLEX ASSY. (p.412)
5)

Leg_Sec03_130FA
Figure 4-130. Removal of SWITCH-DUP DOOR

DISASSEMBLY AND ASSEMBLY DUPLEX 430

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 EPSON AcuLaser C1100 Revision B

4.12.15 ACTUATOR DUP

4)-2 5)
REMOVAL

1. Remove DUPLEX ASSY. (p.412)

4)-1
2. Remove the screw (silver, with flange, tapping, 10mm) fastening COVER REAR
from DUPLEX ASSY.
3. Slide COVER REAR to the right, unhook the 2 hooks on the rear of COVER
REAR from DUPLEX ASSY, and remove COVER REAR.
4. Unhook the hook fastening ACTUATOR DUP to DUPLEX ASSY, and remove CAUTION
ACTUATOR DUP together with SPRING ACTUATOR.
5. Remove SPRING ACTUATOR from ACTUATOR DUP.
2)

REINSTALLATION 3)

1. Attach SPRING ACTUATOR to ACTUATOR DUP.

2. After inserting the right-side shaft of ACTUATOR DUP into the hole on
DUPLEX ASSY, attach ACTUATOR DUP together with SPRING ACTUATOR,
and fasten by the hook.

C A U T IO N SPRING ACTUATOR must be firmly hooked onto ACTUATOR

DUP and DUPLEX ASSY.

3. Match the 2 hooks on the rear of COVER REAR with DUPLEX ASSY, and attach
COVER REAR.
4. Fasten COVER REAR to DUPLEX ASSY with the screw (silver, with flange,
tapping, 10 mm).
Leg_Sec03_134FA
5. Attach DUPLEX ASSY. (p.412) Figure 4-131. Removal of ACTUATOR DUP

DISASSEMBLY AND ASSEMBLY DUPLEX 431

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4.12.16 SENSOR LOW PASS 2)

C A U T IO N Step numbers with [ ] in the figure indicate the step of
reinstallation. 3)

5) 4)-2
REMOVAL

1. Remove DUPLEX ASSY. (p.412) 4)-1 [2)]

2. Remove the screw (silver, with flange, tapping, 10mm) fastening COVER REAR
from DUPLEX ASSY.
3. Slide COVER REAR to the right, unhook the 2 hooks on the rear of COVER
REAR from DUPLEX ASSY, and remove COVER REAR.
4. Unhook the 3 hooks fastening SENSOR LOW PASS to DUPLEX ASSY, and
remove SENSOR LOW PASS.
5. Disconnect connector (P/J123) from SENSOR LOW PASS.

REINSTALLATION

1. Connect connector (P/J123) to SENSOR LOW PASS.

2. Match the hook on SENSOR LOW PASS with the attachment position, and attach
to DUPLEX ASSY while lifting up ACTUATOR DUP.
3. Match the 2 hooks on the rear of COVER REAR with DUPLEX ASSY, and attach
COVER REAR.
4. Fasten COVER REAR to DUPLEX ASSY with the screw (silver, with flange,
tapping, 10 mm).
5. Attach DUPLEX ASSY. (p.412) Leg_Sec03_131FA
Figure 4-132. Removal of SENSOR LOW PASS

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4.12.17 SUPPORT DUP

REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove the KL ring fastening SUPPORT DUP to the shaft on DUPLEX ASSY.
3. Remove SUPPORT DUP from the shaft on DUPLEX ASSY. 3)

2)
REINSTALLATION

1. Attach SUPPORT DUP to the shaft on DUPLEX ASSY.

2. Fasten SUPPORT DUP to the shaft on DUPLEX ASSY with the KL ring.
3. Attach DUPLEX ASSY. (p.412) 3)
2)

Leg_Sec03_132FA
Figure 4-133. Removal of SUPPORT DUP

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4.12.18 HINGE ASSY L

REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove COVER-L DUP. (p.414)
3. Remove the E-ring fastening HINGE ASSY L to DUPLEX ASSY.
4. Remove HINGE ASSY L from DUPLEX ASSY.

REINSTALLATION

1. Match the hole on HINGE ASSY L with the D cut surface on SHAFT HINGE,
insert SHAFT DAMPER between the top and bottom pads of HINGE ASSY L,
and attach HINGE ASSY L.
2. Fasten HINGE ASSY L to DUPLEX ASSY with the E-ring.
4)
3. Attach COVER-L DUP. (p.414)
4. Attach DUPLEX ASSY. (p.412)

3)
Leg_Sec03_133FA
Figure 4-134. Removal of HINGE ASSY L

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4.12.19 HINGE ASSY R

REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove COVER-R DUP. (p.413)
3. Remove the E-ring fastening HINGE ASSY R to DUPLEX ASSY.
4. Remove HINGE ASSY R from DUPLEX ASSY together with HINGE-R.
5. Remove the 2 screws (silver, with flange, 6 mm) fastening HINGE-R to HINGE
ASSY R.
6. Remove HINGE-R from HINGE ASSY R.

REINSTALLATION
4)
1. Attach HINGE-R to HINGE ASSY R.
2. Fasten HINGE-R to HINGE ASSY R with the 2 screws (silver, with flange, 6
mm).
3. Match the hole on HINGE ASSY R with the D cut surface on SHAFT HINGE,
insert SHAFT DAMPER between the top and bottom pads of HINGE ASSY R, 3)
and attach HINGE ASSY R together with HINGE-R.
4. Fasten HINGE ASSY R to DUPLEX ASSY with the E-ring.
5. Attach COVER-R DUP. (p.413) 5)
6. Attach DUPLEX ASSY. (p.412)

5)

6)
Leg_Sec03_137FA
Figure 4-135. Removal of HINGE ASSY R

DISASSEMBLY AND ASSEMBLY DUPLEX 435

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4.12.20 COVER LOW-DUP TRANS

3)
REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove the 2 screws (silver, with flange, tapping, 10mm) fastening COVER 2)
LOW-DUP TRANS to DUPLEX ASSY.
3. Remove COVER LOW-DUP TRANS from DUPLEX ASSY.
2)

REINSTALLATION

1. Match the protrusion on COVER LOW-DUP TRANS with the concave portion on
the left side of DUPLEX ASSY, and the concave portion on COVER LOW-DUP
TRANS with the protrusion on the right side of DUPLEX ASSY, and attach
COVER LOW-DUP TRANS so that SHAFT HINGE is nipped by it.
2. Fasten COVER LOW-DUP TRANS to DUPLEX ASSY with the 2 screws (silver, Leg_Sec03_135FA
with flange, tapping, 10mm). Figure 4-136. Removal of COVER LOW-DUP TRANS
3. Attach DUPLEX ASSY. (p.412)

DISASSEMBLY AND ASSEMBLY DUPLEX 436

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4.12.21 COVER UP-DUP TRANS

REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove COVER LOW-DUP TRANS. (p.436)
3. Open COVER UP-DUP TRANS. 4)-2
C A U T IO N When performing the following work, take care not to damage the
COVER UP-DUP TRANS boss.

4. Bend down the attachment section on the right side of COVER UP-DUP TRANS
with a small screwdriver or a similar tool, draw out the boss on the right side from
the hole on DUPLEX ASSY, and remove COVER UP-DUP TRANS.

REINSTALLATION

C A U T IO N When performing the following work, take care not to damage the 4)-1
COVER UP-DUP TRANS boss.

1. After inserting the boss on the left side into the hole on DUPLEX ASSY with
COVER UP-DUP TRANS open, attach COVER UP-DUP TRANS to DUPLEX
ASSY while bending down the boss on the right side.
2. Open COVER UP-DUP TRANS. Leg_Sec03_136FA
Figure 4-137. Removal of COVER UP-DUP TRANS
3. Attach COVER LOW-DUP TRANS. (p.436)
4. Attach DUPLEX ASSY. (p.412)

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 EPSON AcuLaser C1100 Revision B

4.12.22 PAD DAMPER L 5. Attach HINGE ASSY L. (p.434)

6. Attach COVER-L DUP. (p.414)
REMOVAL
7. Attach DUPLEX ASSY. (p.412)
1. Remove DUPLEX ASSY. (p.412)
2. Remove COVER-L DUP. (p.414)
3. Remove HINGE ASSY L. (p.434)
4. Remove the screw (silver, with flange, 6 mm) fastening BRACKET PAD L to
HINGE-L.
5. Remove BRACKET PAD L from HINGE-L together with PAD DAMPER L.
6. Peel off and remove PAD DAMPER L from HINGE-L and BRACKET PAD L.
NOTE

REINSTALLATION
6)
C A U T IO N The shapes of the left and right PAD DAMPERs are different. Take
care not to confuse these dampers.
6)
PAD DAMPER L is broad, while PAD DAMPER R is narrow.

1. Cleanly peel off any old double-sided adhesive tape from the attachment surfaces
of HINGE-L and BRACKET PAD L, and wipe off with drum cleaner or similar
solution. 5) 4)
When performing the following work, match PAD DAMPER L Leg_Sec03_513EA
C A U T IO N
with the area shown in the Figure right, located on HINGE-L and Figure 4-138. Removal of PAD DAMPER L
BRACKET PAD L, and then affix PAD DAMPER L.

2. Peel off the protective paper from the dual-sided adhesive tape of PAD DAMPER
L, and affix PAD DAMPER L to the affixing surfaces of HINGE-L and
BRACKET PAD L.
3. Match the hole on BRACKET PAD L with the boss on HINGE-L, and attach
BRACKET PAD L together with PAD DAMPER L.
4. Fasten BRACKET PAD L to HINGE-L with the screw (silver, with flange, 6 mm).

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 EPSON AcuLaser C1100 Revision B

4.12.23 PAD DAMPER R 3. Match the hole on BRACKET PAD R LOWER with the boss on BRACKET
ASSY R, and attach BRACKET PAD R LOWER together with PAD DAMPER
REMOVAL R.
4. Fasten BRACKET PAD R LOWER to BRACKET ASSY R with the screw
1. Remove DUPLEX ASSY. (p.412)
(silver, with flange, 6 mm).
2. Remove COVER-R DUP. (p.413)
5. Attach HINGE ASSY R. (p.435)
3. Remove HINGE ASSY R. (p.435)
6. Attach COVER-R DUP. (p.413)
4. Remove the screw (silver, with flange, 6 mm) fastening BRACKET PAD R
7. Attach DUPLEX ASSY. (p.412)
LOWER to BRACKET ASSY R.
5. Remove BRACKET PAD R LOWER from BRACKET ASSY R together with
PAD DAMPER R.
6. Peel off and remove PAD DAMPER R from BRACKET ASSY R and BRACKET
PAD R LOWER. 6)

REINSTALLATION

6)
C A U T IO N The shapes of the left and right PAD DAMPERs are different. Take
care not to confuse these dampers.
PAD DAMPER L is broad, while PAD DAMPER R is narrow.

1. Cleanly peel off any old double-sided adhesive tape from the attachment surfaces
of BRACKET ASSY R and BRACKET PAD R LOWER, and wipe off with drum
cleaner or similar solution. 4)
5)
C A U T IO N When performing the following work, match PAD DAMPER R
with the area shown in the Figure right, located on BRACKET
ASSY R and BRACKET PAD R LOWER, and then affix PAD
DAMPER R,

2. Peel off the protective paper from the dual-sided adhesive tape of PAD DAMPER CAUTION
R, and affix PAD DAMPER R to the affixing surfaces of BRACKET ASSY R and Leg_Sec03_514EA
BRACKET PAD R LOWER.
Figure 4-139. Removal of PAD DAMPER R

DISASSEMBLY AND ASSEMBLY DUPLEX 439

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4.12.24 ROLLER ASSY DUP

REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove COVER-R DUP. (p.413)
3. Remove COVER-L DUP. (p.414)
4. Remove COVER LOW-DUP TRANS. (p.436)
5. Remove COVER UP-DUP TRANS. (p.437)
6. Unclamp the clamp on BKT MOTOR DUP TRANS, and remove the harness. 6)
7. Disconnect connector (P/J444) from PWBA DUP-L. 7)
8. Remove the 4 screws (silver, with flange, tapping, 10mm) fastening BKT
MOTOR DUP TRANS to DUPLEX ASSY. 8)

C A U T IO N „ When performing the following work, take care not to remove

DUPLEX ASSY and BKT MOTOR DUP TRANS too far as 8) 8)
they are connected by a harness.
8)
„ When performing the following work, take care not to drop or 9) Leg_Sec03_128FB
lose gears, and other parts.
Figure 4-140. Removal of ROLLER ASSY DUP (1)
9. Remove BKT MOTOR DUP TRANS from DUPLEX ASSY together with PWBA
DUP-L and MOTOR ASSY DUP.
10. Unhook the hook on GEAR 30 fastened to ROLLER ASSY DUP, and remove
GEAR 30 from DUPLEX ASSY.
11. Remove the E-ring fastening the right side of ROLLER ASSY DUP from
DUPLEX ASSY.
12. Remove the left and right BEARING DUP fastening ROLLER ASSY DUP from
DUPLEX ASSY.
13. Temporarily slide ROLLER ASSY DUP to the left, and draw out the shaft of
ROLLER ASSY DUP from the right-side bearing of DUPLEX ASSY to remove
ROLLER ASSY DUP.

DISASSEMBLY AND ASSEMBLY DUPLEX 440

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION 13) 10)-1

1. Insert the shaft left side on ROLLER ASSY DUP into the left-side bearing on
DUPLEX ASSY, and slide ROLLER ASSY DUP to the right to attach.
2. Match the double D cut surface of BEARING DUP with the left and right bearings
of DUPLEX ASSY, attach BEARING DUP, and fasten ROLLER ASSY DUP. 11) 12)
3. Fasten the right side of ROLLER ASSY DUP to DUPLEX ASSY with the E-ring.
4. Match the hole on GEAR 30 with the D cut surface on ROLLER ASSY DUP,
fasten the hook on GEAR 30 to the groove on ROLLER ASSY DUP, and attach.
5. Match the hole on BKT MOTOR DUP TRANS with the shaft on DUPLEX
12)
ASSY, and attach together with PWBA DUP-L and MOTOR ASSY DUP.
6. Fasten BKT MOTOR DUP TRANS to DUPLEX ASSY with the 4 screws (silver,
with flange, tapping, 10mm). 10)-2
7. Connect connector (P/J444) to PWBA DUP-L.
8. Route the harness, and fasten the harness by the clamp on BKT MOTOR DUP
TRANS. Leg_Sec03_138FA
9. Attach COVER UP-DUP TRANS. (p.437) Figure 4-141. Removal of ROLLER ASSY DUP (2)
10. Attach COVER LOW-DUP TRANS. (p.436)
11. Attach COVER-L DUP. (p.414)
12. Attach COVER-R DUP. (p.413)
13. Attach DUPLEX ASSY. (p.412)

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 EPSON AcuLaser C1100 Revision B

4.12.25 PWBA DUP-L

C A U T IO N Avoid staticky places such as on a carpet especially when removing
or inserting a Board. Before starting work with the Board, make
sure to touch metallic portion of the printer connected to the earth
to let your body come out free of static electricity.

REMOVAL 5)-2
1. Remove DUPLEX ASSY. (p.412)
2. Remove COVER-L DUP. (p.414) 4)
3. Disconnect connector (P/J442), connector (P/J443) and connector (P/J444) from 4)
3)
PWBA DUP-L.
4. Remove the 2 screws (silver, tapping, 5mm) fastening PWBA DUP-L to DUPLEX
ASSY.
5. Unhook the hook on SUPPORT PWB fastening PWBA DUP-L to DUPLEX 5)-1
ASSY, and remove PWBA DUP-L. Leg_Sec03_139FA
Figure 4-142. Removal of PWBA DUP-L

REINSTALLATION

1. Attach PWBA DUP-L to DUPLEX ASSY, and fasten by the hook on SUPPORT
PWB.
2. Fasten PWBA DUP-L to DUPLEX ASSY with the 2 screws (silver, 5mm).
3. Connect connector (P/J442), connector (P/J443) and connector (P/J444) to PWBA
DUP-L.
4. Attach COVER-L DUP. (p.414)
5. Attach DUPLEX ASSY. (p.412)

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4.12.26 MOTOR ASSY DUP

REMOVAL

1. Remove DUPLEX ASSY. (p.412)

2. Remove COVER-L DUP. (p.414)
3. Unclamp the clamp on BKT MOTOR DUP TRANS, and remove the harness.
4. Disconnect connector (P/J444) from PWBA DUP-L.
5. Remove the 4 screws (silver, with flange, tapping, 10 mm) fastening BKT
MOTOR DUP TRANS to DUPLEX ASSY. 3)
C A U T IO N „ When performing the following work, take care not to remove 4)
DUPLEX ASSY and BKT MOTOR DUP TRANS too far as
they are connected by a harness.
„ When performing the following work, take care not to drop or
5)
lose gears, and other parts.
5) 5)
6. Remove BKT MOTOR DUP TRANS from DUPLEX ASSY together with PWBA
DUP-L and MOTOR ASSY DUP. 5)
6) Leg_Sec03_128FB
7. Unclamp the clamp, and disconnect connector (P/J442) of MOTOR ASSY DUP
on PWBA DUP-L. Figure 4-143. Removal of MOTOR ASSY DUP (1)

8. Remove the 4 screws (silver, 5mm) fastening MOTOR ASSY DUP to BKT
MOTOR DUP TRANS.
9. Remove MOTOR ASSY DUP from BKT MOTOR DUP TRANS.

DISASSEMBLY AND ASSEMBLY DUPLEX 443

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION 8)
8)
C A U T IO N When performing the following work, pay attention to the
attachment direction of MOTOR ASSY DUP. 8)
8)

9)
1. Match the harness side of MOTOR ASSY DUP with the mark on BKT
MOTOR DUP TRANS, and attach to MOTOR ASSY DUP.
2. Fasten MOTOR ASSY DUP to BKT MOTOR DUP TRANS with the 4 screws
(silver, 5mm).
3. Connect connector (P/J442) of MOTOR ASSY DUP on PWBA DUP-L, and
fasten the harness on MOTOR ASSY DUP with the clamp. 7)-1
4. Match the hole on BKT MOTOR DUP TRANS with the shaft on DUPLEX
7)-2 Leg_Sec03_140FB
ASSY, and attach together with PWBA DUP-L and MOTOR ASSY DUP.
Figure 4-144. Removal of MOTOR ASSY DUP (2)
5. Fasten BKT MOTOR DUP TRANS to DUPLEX ASSY with the 4 screws (silver,
with flange, tapping, 10mm).
6. Connect connector (P/J444) to PWBA DUP-L.
7. Route the harness, and fasten the harness by the clamp on BKT MOTOR DUP
TRANS.
8. Attach COVER-L DUP. (p.414)
9. Attach DUPLEX ASSY. (p.412)

DISASSEMBLY AND ASSEMBLY DUPLEX 444

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 EPSON AcuLaser C1100 Revision B

4.12.27 ROLLER ASSY DUP OUT 4. Fasten the left and right sides of ROLLER ASSY DUP OUT to DUPLEX ASSY
with the E-rings.
REMOVAL 5. Attach COVER UP-DUP TRANS. (p.437)

1. Remove DUPLEX ASSY. (p.412) 6. Attach COVER LOW-DUP TRANS. (p.436)

2. Remove COVER-R DUP. (p.413) 7. Attach COVER-L DUP. (p.414)

3. Remove COVER-L DUP. (p.414) 8. Attach COVER-R DUP. (p.413)

4. Remove COVER LOW-DUP TRANS. (p.436) 9. Attach DUPLEX ASSY. (p.412)

5. Remove COVER UP-DUP TRANS. (p.437)

9)
6. Remove the E-ring fastening ROLLER ASSY DUP OUT to DUPLEX ASSY.
7. Remove GEAR 30 OW from the left side of ROLLER ASSY DUP OUT.
8. Remove the left and right BEARING DUP fastening ROLLER ASSY DUP OUT
from DUPLEX ASSY.
9. Temporarily slide ROLLER ASSY DUP OUT to the left, and draw out the shaft of
NOTE
ROLLER ASSY DUP OUT from the right-side bearing of DUPLEX ASSY to
6)
remove ROLLER ASSY DUP OUT.
8)

REINSTALLATION

1. Insert the shaft left side on ROLLER ASSY DUP OUT into the left-side bearing 8)
on DUPLEX ASSY, and slide ROLLER ASSY DUP OUT to the right to attach. 6)
7)
2. Match the double D cut surface of BEARING DUP with the left and right bearings
of DUPLEX ASSY, attach BEARING DUP, and fasten ROLLER ASSY DUP
OUT.

C A U T IO N When performing the following work, pay attention to the

Leg_Sec03_141FA
attachment direction of GEAR 30 OW.
Figure 4-145. Removal of ROLLER ASSY DUP OUT

3. Attach GEAR 30 OW to the left side of ROLLER ASSY DUP OUT with the
flange of GEAR 30 OW facing the outside.

DISASSEMBLY AND ASSEMBLY DUPLEX 445

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 EPSON AcuLaser C1100 Revision B

4.13 500 PAPER CASSETTE & 500 PAPER

FEEDER

4.13.1 500 PAPER CASSETTE ASSY

REMOVAL

1. Draw out 500 PAPER CASSETTE ASSY until it comes to a stop, then slightly lift
up the front side, and remove 500 PAPER CASSETTE ASSY from 500 PAPER
FEEDER.

1)
REINSTALLATION

1. Insert the front side of 500 PAPER CASSETTE ASSY into 500 PAPER FEEDER
with the front side of 500 PAPER CASSETTE ASSY slightly lifted up, then hold
it horizontal and insert it all the way seated in 500 PAPER FEEDER.

Leg_Sec03_013EA
Figure 4-146. Removal of 500 PAPER CASSETTE ASSY

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 446

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 EPSON AcuLaser C1100 Revision B

4.13.2 GUIDE END ASSY 3)

C A U T IO N Step numbers with [ ] in the figure indicate the step during
attachment.

REMOVAL

1. Remove 500 PAPER CASSETTE ASSY. (p.446)

2. Remove PLATE ASSY BOTTOM 500. (p.448)
3. Slide GUIDE END ASSY to the rear, match the 4 protrusions on GUIDE END [2)]
ASSY with the notches on CASSETTE 500, and lift up to remove.

REINSTALLATION

1. Match the 4 protrusions on GUIDE END ASSY with the notches on CASSETTE
500, and attach.
2. Slide GUIDE END ASSY to the front, and insert the protrusion on GUIDE END
ASSY into the groove on PAPER SLIDE 500.
3. Attach PLATE ASSY BOTTOM 500. (p.448)
4. Attach 500 PAPER CASSETTE ASSY. (p.446) Leg_Sec03_014EA

Figure 4-147. Removal of GUIDE END ASSY

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 447

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 EPSON AcuLaser C1100 Revision B

4.13.3 PLATE ASSY BOTTOM 500

3)-1
REMOVAL

1. Remove 500 PAPER CASSETTE ASSY. (p.446)

2. Slide LOCK LIFT R and LOCK LIFT L, and unlock the locks.
3. Unhook the hooks on ROLL LINK fastened to the shaft of PLATE ASSY
BOTTOM 500 on both the left and right sides, and remove ROLL LINK, LOCK
LIFT R and LOCK LIFT L. 3)-2
4. Remove the 4 screws (silver, tapping, 6 mm) (2 each on left and right) fastening
the left and right PLATE ROLL STOPPER 500s to 500 PAPER CASSETTE
ASSY.
3)-2
5. Remove the protrusion on PLATE ROLL STOPPER from the hole on 500 PAPER
CASSETTE ASSY, and remove the left and right PLATE ROLL STOPPERs.
6. Press the two hooks on CASSETTE 500, and release the front side of PLATE
ASSY BOTTOM 500. 3)-1
7. Remove the protrusion of PLATE ASSY BOTTOM 500 from the indent on
PAPER SLIDE 500.
8. Draw out the shaft on PLATE ASSY BOTTOM 500 from the oblong hole on
CASSETTE 500 while pushing the side of CASSETTE 500 outward, and remove 2) 2)
PLATE ASSY BOTTOM 500.
Leg_Sec03_015EA
Figure 4-148. Removal of PLATE ASSY BOTTOM 500 (1)

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 448

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

1. Match the boss on the rear of PLATE ASSY BOTTOM 500 with SPRING NF. 6)
C A U T IO N Make sure that the boss on the rear of PLATE ASSY BOTTOM 7)
500 is inserted into SPRING NF. 6)

2. Insert the shaft on PLATE ASSY BOTTOM 500 into the oblong hole on
CASSETTE 500 while pushing the side of CASSETTE 500 outward, and attach
PLATE ASSY BOTTOM 500.
3. Fasten the front side of PLATE ASSY BOTTOM 500 with the two hooks on
CASSETTE 500 while inserting the protrusion on PLATE ASSY BOTTOM 500
into the concave portion on PAPER SLIDE 500.
8)-2

C A U T IO N The protrusion on PLATE ASSY BOTTOM 500 must be inserted

into the concave portion on PAPER SLIDE 500.

4. Match the protrusion on PLATE ROLL STOPPER with the hole on 500 PAPER
CASSETTE ASSY, and attach the left and right PLATE ROLL STOPPERs.
8)-1
5. Fasten the left and right PLATE ROLL STOPPERs to 500 PAPER CASSETTE
ASSY with the 4 screws (silver, tapping, 6 mm) (2 each on left and right). 4)
6. Attach LOCK LIFT R, LOCK LIFT L and ROLL LINK to the bearing on PLATE 4)
ASSY BOTTOM 500 on both the left and right sides, and fasten the hook on 5)
ROLL LINK to the groove on the shaft of PLATE ASSY BOTTOM 500.
7. Press PLATE ASSY BOTTOM 500 to lock LOCK LIFT R and LOCK LIFT L. 8)-1
4)
8. Attach 500 PAPER CASSETTE ASSY. (p.446) 5) 4) Leg_Sec03_016EA

Figure 4-149. Removal of PLATE ASSY BOTTOM 500 (2)

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 449

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 EPSON AcuLaser C1100 Revision B

4.13.4 GUIDE PAPER L ASSY 500, GUIDE PAPER R 3)-1

ASSY 500 4)
3)-2
REMOVAL

1. Remove 500 PAPER CASSETTE ASSY. (p.446) 5)

2. Remove PLATE ASSY BOTTOM 500. (p.448)
3. Unhook the hook on CASSETTE 500 fastening PINION 12, and remove PINION
12.
4. Slide GUIDE PAPER L ASSY 500 to the right, match the 3 protrusions on
GUIDE PAPER L ASSY 500 with the notches on CASSETTE 500, and lift up to
remove.
5. Slide GUIDE PAPER R ASSY 500 to the left, match the 3 protrusions on GUIDE
PAPER R ASSY 500 with the notches on CASSETTE 500, and lift up to remove.

REINSTALLATION

1. Match the 3 protrusions on GUIDE PAPER R ASSY 500 with the notches on
CASSETTE 500, and attach.
2. Match the 3 protrusions on GUIDE PAPER L ASSY 500 with the notches on
CASSETTE 500, and attach.
3. Set GUIDE PAPER L ASSY 500 and GUIDE PAPER R ASSY 500 to their
maximum open states, attach PINION 12 to CASSETTE 500, and fasten with the
hooks.
4. Attach PLATE ASSY BOTTOM 500. (p.453)
5. Attach 500 PAPER CASSETTE ASSY. (p.446) Leg_Sec03_515EA
Figure 4-150. Removal of GUIDE PAPER L ASSY 500 and GUIDE PAPER R
ASSY 500

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 450

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 EPSON AcuLaser C1100 Revision B

4.13.5 COVER FRONT CST 500

3)-1
REMOVAL

1. Remove 500 PAPER CASSETTE ASSY. (p.446)

2. Remove the 2 screws (silver, with flange, tapping, 8 mm) fastening COVER
FRONT CST 500 to 500 PAPER CASSETTE ASSY.
3. Unhook the hook on the base of COVER FRONT CST 500 using a small
screwdriver or a similar tool, pull down COVER FRONT CST 500 towards you to
release the three protrusions on the rear of COVER FRONT CST 500 from the
hole on the 500 PAPER CASSETTE ASSY, and remove COVER FRONT CST
500.

2)
REINSTALLATION 3)-2
2)
1. Match the three protrusions on the rear of COVER FRONT CST 500 with the hole
on 500 PAPER CASSETTE ASSY, attach COVER FRONT CST 500, and fasten
the hook on the base of COVER FRONT CST 500.
2. Fasten COVER FRONT CST 500 to 500 PAPER CASSETTE ASSY with the 2
screws (silver, with flange, tapping, 8 mm).
3. Attach 500 PAPER CASSETTE ASSY. (p.446)
3)-3
Leg_Sec03_018EA
Figure 4-151. Removal of COVER FRONT CST 500

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 451

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4.13.6 500 PAPER FEEDER ASSY (REFERENCE

ONLY)
REMOVAL

1. Remove 500 PAPER CASSETTE ASSY. (p.446)

2. Turn LOCK MC TO FDR on both the left and right sides CW by 90° to unlock
from the main unit.
3. Holding the pitted area on the lower side of both the left and right sides of the main
unit, lift up the main unit, and remove from 500 PAPER FEEDER ASSY.

REINSTALLATION

C A U T IO N When performing the following work, the lengthwise direction of

the oval shape (section that enters the attachment hole on the main
unit) on the top of LOCK MC TO FDR must be facing left and 3)
right.
1. Match the attachment holes on the main unit with the three bosses on 500 PAPER
FEEDER ASSY, and attach the main unit to 500 PAPER FEEDER ASSY.
2. Turn LOCK MC TO FDR on both the left and right sides CCW by 90° to lock with
the main unit.
3. Attach 500 PAPER CASSETTE ASSY. (p.446)

2)
Unlocked Locked
Leg_Sec03_019EA
Figure 4-152. Removal of 500 PAPER FEEDER ASSY

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 452

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 EPSON AcuLaser C1100 Revision B

4.13.7 COVER LEFT 500

REMOVAL

1. Remove 500 PAPER CASSETTE ASSY. (p.446)

2. Remove the 5 screws (silver, with flange, 8 mm) fastening COVER LEFT 500 to
500 PAPER FEEDER ASSY.
3. Remove COVER LEFT 500 from 500 PAPER FEEDER ASSY while pulling the
rear side of COVER LEFT 500 outward.
3)-1
2)

REINSTALLATION
2)
1. Match the boss on COVER LEFT 500 with the hole on 500 PAPER FEEDER
ASSY while inserting the metal plate section of the frame at the front and rear of
500 PAPER FEEDER ASSY into the clearance between the rib sections on the
front and rear of COVER LEFT 500, and attach COVER LEFT 500.
2. Fasten COVER LEFT 500 to 500 PAPER FEEDER ASSY with the 5 screws
(silver, with flange, 8 mm). 3)-2 2)
3. Attach 500 PAPER CASSETTE ASSY. (p.446) 2)
2)

Leg_Sec03_020EA
Figure 4-153. Removal of COVER LEFT 500

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 453

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 EPSON AcuLaser C1100 Revision B

4.13.8 CHUTE FDR ASSY 500

REMOVAL

C A U T IO N When performing the following work, take care not to damage the
boss on CHUTE FDR ASSY 500.

1. Remove 500 PAPER CASSETTE ASSY. (p.446)

2. Remove COVER RIGHT 500. (p.455)
3. Remove the screw (silver, with flange, tapping, 8 mm) fastening CHUTE FDR
ASSY 500.
4. Open CHUTE FDR ASSY 500.
3)
5. Press the attachment section on the right side of CHUTE FDR ASSY 500 with
your finger to bend down, draw out the boss on the right side from the hole on 500
PAPER FEEDER ASSY, and remove CHUTE FDR ASSY 500.

5)-2

REINSTALLATION

1. With CHUTE FDR ASSY 500 slightly open, insert the boss on the left side into
the hole on 500 PAPER FEEDER ASSY, then attach CHUTE FDR ASSY 500 to
500 PAPER FEEDER ASSY while bending down the boss on the right side. 5)-1
Leg_Sec03_021EA
2. Close CHUTE FDR ASSY 500.
Figure 4-154. Removal of CHUTE FDR ASSY 500
3. Fasten CHUTE FDR ASSY 500 with the screw (silver, with flange, tapping, 8
mm).
4. Attach COVER RIGHT 500. (p.455)
5. Attach 500 PAPER CASSETTE ASSY. (p.446)

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 454

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4.13.9 COVER RIGHT 500

REMOVAL

1. Remove 500 PAPER CASSETTE ASSY. (p.446)

2. Remove the 5 screws (silver, with flange, 8 mm) fastening COVER RIGHT 500 to
500 PAPER FEEDER ASSY.
3. Remove COVER RIGHT 500 from 500 PAPER FEEDER ASSY.
2)

REINSTALLATION
2)
1. Match the boss on COVER RIGHT 500 with the hole on 500 PAPER FEEDER
ASSY while inserting the metal plate section of the frame at the front and rear of
500 PAPER FEEDER ASSY into the clearance between the rib sections on the
front and rear of COVER RIGHT 500, and attach COVER RIGHT 500. 2)
2. Fasten COVER RIGHT 500 to 500 PAPER FEEDER ASSY with the 5 screws
(silver, with flange, 8 mm). 2) 2) 3)
3. Attach 500 PAPER FEEDER ASSY. (p.446)
Leg_Sec03_022EA
Figure 4-155. Removal of COVER RIGHT 500

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 455

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 EPSON AcuLaser C1100 Revision B

4.13.10 PWBA TRAY 500

C A U T IO N Avoid staticky places such as on a carpet especially when removing
or inserting a Board. Before starting work with the Board, make
sure to touch metallic portion of the printer connected to the earth
to let your body come out free of static electricity.

REMOVAL

1. Remove COVER LEFT 500. (p.453)

2. Disconnect connector (P/J435), connector (P/J436) and connector (P/J437) from
PWBA TRAY 500.
3. Remove the 3 screws (silver, with flange, 6 mm) fastening PWBA TRAY 500 to
500 PAPER FEEDER ASSY.
4. Remove PWBA TRAY 500 from 500 PAPER FEEDER ASSY.

3)
3) 4)
REINSTALLATION

1. Match the notch at the bottom right of PWBA TRAY 500 with the protrusion on
500 PAPER FEEDER ASSY to attach. 3)
2. Fasten PWBA TRAY 500 to 500 PAPER FEEDER ASSY with the 3 screws
(silver, with flange, 6 mm).
3. Connect connector (P/J435), connector (P/J436) and connector (P/J437) to PWBA
TRAY 500.
Leg_Sec03_030EA
4. Attach COVER LEFT 500. (p.453)
Figure 4-156. Removal of PWBA TRAY 500
Table 4-12. Symptoms when the connector is loose
Connector Error Caused by Connector
Panel Indication Symptom
No. Disconnection
Printing is not
P/J435 Service Req E547 Paper Feeder cannot be detected.
possible.
Printing is not
P/J437 G Open Paper Feeder Rear Cover is open.
possible.

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 456

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 EPSON AcuLaser C1100 Revision B

4.13.11 PWBA MOT

C A U T IO N Avoid staticky places such as on a carpet especially when removing
or inserting a Board. Before starting work with the Board, make
sure to touch metallic portion of the printer connected to the earth
to let your body come out free of static electricity.

REMOVAL

1. Remove COVER LEFT 500. (p.453)

2. Disconnect connector (P/J440) and connector (P/J446) from PWBA MOT.
3. Remove the 3 screws (silver, with flange, 6 mm) fastening PWBA MOT to 500 4)
PAPER FEEDER ASSY.
4. Remove PWBA MOT from 500 PAPER FEEDER ASSY.

3)
3)
REINSTALLATION

1. Match the notch at the bottom right of PWBA MOT with the protrusion on 500 3)
PAPER FEEDER ASSY to attach.
2. Fasten PWBA MOT to 500 PAPER FEEDER ASSY with the 3 screws (silver,
with flange, 6 mm).
3. Connect connector (P/J440) and connector (P/J446) to PWBA MOT.
4. Attach COVER LEFT 500. (p.453) Leg_Sec03_029EA
Figure 4-157. Removal of PWBA MOT
Table 4-13. Symptoms when the connector is loose
Connector Error Caused by Connector
Panel Indication Symptom
No. Disconnection
P/J446 Jam LC, G FEEDER Jam ---

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 457

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4.13.12 DRIVE ASSY FEED

5)-1
REMOVAL

1. Remove COVER LEFT 500. (p.453)

2. Remove CLUTCH ASSY FEED. (p.461)

C A U T IO N When performing the following work, leave the intermediate

connector of the connector (P/J610) on SOLENOID FEED on the
harness side.
4)

3. Disconnect connector (P/J446) from PWBA MOT and connector (P/J610) from
SOLENOID FEED. 4) 4)
5)-2
C A U T IO N The screws to be removed in the following work are those fastening
the four corners (marked by ) on DRIVE ASSY FEED. Other 4)
screws must not be removed. 3)

4. Remove the 4 screws (silver, 6 mm) fastening DRIVE ASSY FEED to 500
PAPER FEEDER ASSY.
5. Remove the protrusion on the top right of DRIVE ASSY FEED from 500 PAPER
FEEDER ASSY, and remove DRIVE ASSY FEED.

CAUTION
Leg_Sec03_023EA
REINSTALLATION Figure 4-158. Removal of DRIVE ASSY FEED
1. Hook the protrusion on the top right of DRIVE ASSY FEED onto the notch on
Table 4-14. Symptoms when the connector is loose
500 PAPER FEEDER ASSY, and match the hole on DRIVE ASSY FEED with
the boss on 500 PAPER FEEDER ASSY to attach. Connector Error Caused by Connector
Panel Indication Symptom
No. Disconnection
2. Fasten DRIVE ASSY FEED to 500 PAPER FEEDER ASSY with the 4 screws
P/J446 Jam LC, G FEEDER Jam ---
(silver, 6 mm).
Printing is not
P/J610 Paper Out LC1 No paper in Paper Cassette
3. Connect connector (P/J446) to PWBA MOT and connector (P/J610) to possible.
SOLENOID FEED.
4. Attach CLUTCH ASSY FEED. (p.461)
5. Attach COVER LEFT 500. (p.453)

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 458

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 EPSON AcuLaser C1100 Revision B

4.13.13 SOLENOID FEED

REMOVAL

1. Remove COVER LEFT 500. (p.453)

2. Remove CLUTCH ASSY FEED. (p.461)
3. Remove DRIVE ASSY FEED. (p.458)
4. Remove the screw (silver, 6 mm) fastening SOLENOID FEED to DRIVE ASSY
FEED.
5. Remove SOLENOID FEED from DRIVE ASSY FEED.

REINSTALLATION
4)
1. Match the hole on SOLENOID FEED with the boss on DRIVE ASSY FEED.
2. Fasten SOLENOID FEED to DRIVE ASSY FEED with the screw (silver, 6 mm).
5) Leg_Sec03_024FA
3. Attach DRIVE ASSY FEED. (p.458)
Figure 4-159. Removal of SOLENOID FEED
4. Attach CLUTCH ASSY FEED. (p.461)
5. Attach COVER LEFT 500. (p.453)

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 459

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 EPSON AcuLaser C1100 Revision B

4.13.14 MOTOR ASSY FEEDER

REMOVAL

1. Remove COVER LEFT 500. (p.453)

2. Unclamp the clamp on DRIVE ASSY FEED, and remove the harness on MOTOR
ASSY FEEDER.
5)
3. Disconnect connector (P/J446) from PWBA MOT.
4. Remove the 2 screws (silver, 6 mm) fastening MOTOR ASSY FEEDER to
DRIVE ASSY FEED.
5. Remove MOTOR ASSY FEEDER from DRIVE ASSY FEED. 4)
2)
4)
REINSTALLATION
3)
C A U T IO N When performing the following work, pay attention to the
attachment direction of MOTOR ASSY FEEDER.

1. Attach MOTOR ASSY FEEDER to DRIVE ASSY FEED with the harness of
MOTOR ASSY FEEDER facing up. Leg_Sec03_516EA

2. Fasten MOTOR ASSY FEEDER to DRIVE ASSY FEED with the 2 screws Figure 4-160. Removal of MOTOR ASSY FEEDER
(silver, 6 mm).
3. Connect connector (P/J446) to PWBA MOT.
4. Fasten the harness on MOTOR ASSY FEEDER with the clamp on DRIVE ASSY
FEED.
5. Attach COVER LEFT 500. (p.453)

Connector Error Caused by Connector

Panel Indication Symptom
No. Disconnection
P/J446 Jam LC, G FEEDER Jam ---

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 460

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 EPSON AcuLaser C1100 Revision B

4.13.15 CLUTCH ASSY FEED

REMOVAL

1. Remove COVER LEFT 500. (p.453)

2. Unclamp the clamp on DRIVE ASSY FEED, and remove the harness on 5)
CLUTCH ASSY FEED.
3. Disconnect connector (P/J609) from CLUTCH ASSY FEED.
4. Remove the KL ring fastening CLUTCH ASSY FEED to 500 PAPER FEEDER
ASSY. 4)
5. Remove CLUTCH ASSY FEED from 500 PAPER FEEDER ASSY.

REINSTALLATION 2)

1. Match the hole position of CLUTCH ASSY FEED with the D cut surface on the
shaft of ROLL ASSY TURN 500, and attach CLUTCH ASSY FEED so that the
3)
protrusion of DRIVE ASSY FEED enters the concave portion on CLUTCH ASSY
FEED.
2. Fasten CLUTCH ASSY FEED to 500 PAPER FEEDER ASSY with the KL ring.
3. Connect connector (P/J609) to CLUTCH ASSY FEED.
4. Fasten the harness on CLUTCH ASSY FEED with the clamp on DRIVE ASSY
Leg_Sec03_025EA
FEED.
Figure 4-161. Removal of CLUTCH ASSY FEED
5. Attach COVER LEFT 500. (p.453)

Table 4-15. Symptoms when the connector is Loose

Connector Error Caused by Connector
Panel Indication Symptom
No. Disconnection
Printing is not
P/J609 Paper Out LC1 No paper in Paper Cassette
possible.

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 461

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4.13.16 HARNESS-ASSY FEED 1 5)-1

5)-2
REMOVAL

1. Remove 500 PAPER FEEDER ASSY. (p.452)

2. Remove COVER LEFT 500. (p.453)
3. Unclamp the clamp fastening the harness of HARNESS-ASSY FEED 1.
4. Disconnect connector (P/J435) from PWBA-TRAY 500.
5. Unhook the 2 hooks fastening HARNESS-ASSY FEED 1 to 500 PAPER
FEEDER ASSY, and remove HARNESS-ASSY FEED 1. 3)
3)

REINSTALLATION

1. Pass the connector (P/J43) on HARNESS-ASSY FEED through the hole on 500
PAPER FEEDER ASSY.
2. Attach HARNESS-ASSY FEED 1 to 500 PAPER FEEDER ASSY, and fasten
with the hook.
3. Connect connector (P/J435) to PWBA-TRAY 500.
4. Fasten the harness of HARNESS-ASSY FEED 1 with the clamp. 4)
5. Attach COVER LEFT 500. (p.453) Leg_Sec03_026FA
6. Attach 500 PAPER FEEDER ASSY. (p.452) Figure 4-162. Removal of HARNESS-ASSY FEED 1

Table 4-16. Symptoms when the connector is loose

Connector Error Caused by Connector
Panel Indication Symptom
No. Disconnection
Printing is not
P/J435 Service Req E547 Paper Feeder cannot be detected.
possible.

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 462

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 EPSON AcuLaser C1100 Revision B

4.13.17 ROLL ASSY TURN 500 6. Attach DRIVE ASSY FEED. (p.458)
7. Attach CLUTCH ASSY FEED. (p.461)
REMOVAL
8. Attach COVER RIGHT 500. (p.455)
1. Remove CHUTE FDR ASSY 500. (p.454) 9. Attach COVER LEFT 500. (p.453)
2. Remove COVER LEFT 500. (p.453) 10. Attach CHUTE FDR ASSY 500. (p.454)
3. Remove COVER RIGHT 500. (p.455)
4. Remove CLUTCH ASSY FEED. (p.461)
5. Remove DRIVE ASSY FEED. (p.458)
6. Remove HOUSING ASSY FEED. (p.476)
7. Remove CHUTE ASSY 500. (p.466)
8. Remove the E-rings fastening both sides of the shaft on ROLL ASSY TURN 500
from 500 PAPER FEEDER ASSY. 8)
9)
9. Remove the left and right BEARING FEEDs fastening ROLL ASSY TURN 500
from 500 PAPER FEEDER ASSY.
10. Temporarily slide ROLL ASSY TURN 500 to the left, and draw out the shaft of
8)
9)
ROLL ASSY TURN 500 from the right-side bearing on 500 PAPER FEEDER
ASSY to remove ROLL ASSY TURN 500.
10)

REINSTALLATION
Leg_Sec03_027EA
1. Insert the shaft left side on ROLL ASSY TURN 500 into the left-side bearing on Figure 4-163. Removal of ROLL ASSY TURN 500
500 PAPER FEEDER ASSY, and slide ROLL ASSY TURN to the right to attach.
2. Match the double D cut surface of BEARING FEED with the left and right
bearings of 500 PAPER FEEDER ASSY, attach BEARING FEED, and fasten
ROLL ASSY TURN 500.
3. Fasten the shafts on both sides on ROLL ASSY TURN to 500 PAPER FEEDER
ASSY with the E-rings.
4. Attach CHUTE ASSY 500. (p.466)
5. Attach HOUSING ASSY FEED. (p.476)

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 463

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 EPSON AcuLaser C1100 Revision B

4.13.18 SWITCH FEEDER DOOR

[3)]
C A U T IO N Step numbers with [ ] in the figure indicate the step during
attachment. 5)-1

REMOVAL

1. Remove CHUTE FDR ASSY 500. (p.454)

2. Remove COVER LEFT 500. (p.453)
3. Remove the screw (silver, tapping, 8 mm) fastening CAP FEEDER to 500 PAPER
FEEDER ASSY.
4. Remove CAP FEEDER from 500 PAPER FEEDER ASSY.
5. Unhook the 2 hooks fastening SWITCH FEEDER DOOR to 500 PAPER
FEEDER ASSY, and remove SWITCH FEEDER DOOR.
6. Disconnect connector (P/J121) from SWITCH FEEDER DOOR.
6)

REINSTALLATION

1. Connect connector (P/J121) to SWITCH FEEDER DOOR. 4)

5)-2 3)
2. Match the hook on SWITCH FEEDER DOOR with the attachment position, and
attach to 500 PAPER FEEDER ASSY. Leg_Sec03_028FA

3. Pull the harness of the connector on SWITCH FEEDER DOOR from the outside Figure 4-164. Removal of SWITCH FEEDER DOOR
of 500 PAPER FEEDER ASSY, and take up any slack from the harness on the
SWITCH FEEDER DOOR side. Table 4-17. Symptoms when the connector is loose
Connector Error Caused by Connector
4. Match the boss on CAP FEEDER with the hole on 500 PAPER FEEDER ASSY, Panel Indication Symptom
No. Disconnection
and attach CAP FEEDER.
Printing is not
P/J121 G Open Paper Feeder Rear Cover is open.
5. Fasten CAP FEEDER to 500 PAPER FEEDER ASSY with the screw (silver, possible.
tapping, 8 mm).
6. Attach COVER LEFT 500. (p.453)
7. Attach CHUTE FDR ASSY 500. (p.454)

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 464

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 EPSON AcuLaser C1100 Revision B

4.13.19 HARNESS-ASSY FEED 2

REMOVAL

1. Remove 500 PAPER FEEDER ASSY. (p.452)

2. Remove COVER LEFT 500. (p.453)
3. Unclamp the clamp fastening the harness of HARNESS-ASSY FEED 2.
4. Disconnect connector (P/J436) from PWBA-TRAY 500.
5. Unhook the 2 hooks fastening HARNESS-ASSY FEED 2 to 500 PAPER
FEEDER ASSY, and remove HARNESS-ASSY FEED 2.

REINSTALLATION 3)
1. Attach HARNESS-ASSY FEED 2 to 500 PAPER FEEDER ASSY, and fasten 5)-2
3)
with the hook.
4)
2. Connect connector (P/J436) to PWBA-TRAY 500.
3. Fasten the harness of HARNESS-ASSY FEED 2 with the clamp.
4. Attach COVER LEFT 500. (p.453)
5. Attach 500 PAPER FEEDER ASSY. (p.452) 5)-1
Leg_Sec03_031FA
Figure 4-165. Removal of HARNESS-ASSY FEED 2

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 465

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 EPSON AcuLaser C1100 Revision B

4.13.20 CHUTE ASSY 500

REMOVAL

1. Remove 500 PAPER CASSETTE ASSY. (p.446)

2. Remove CHUTE FDR ASSY 500. (p.454)
3. Remove COVER RIGHT 500. (p.455)
4. Remove COVER LEFT 500. (p.453)
5. Remove CLUTCH ASSY FEED. (p.461)
8)
6. Remove DRIVE ASSY FEED. (p.458)
7. Remove HOUSING ASSY FEED. (p.476)
8. Remove the 2 screws (silver, tapping, 8 mm) fastening CHUTE ASSY 500 to 500 8)
PAPER FEEDER ASSY.
9. Remove the screw (silver, 6 mm) fastening BRACKET MAG R to 500 PAPER
FEEDER ASSY. 10)
10. Remove BRACKET MAG R from 500 PAPER FEEDER ASSY.
9)
11. Remove the right-side shaft on CHUTE ASSY 500 from the bearing on GUIDE
CST R.
12. Remove the left-side shaft on CHUTE ASSY 500 from the bearing on GUIDE
CST L, and remove CHUTE ASSY 500 from 500 PAPER FEEDER ASSY.

Leg_Sec03_041EA
Figure 4-166. Removal of CHUTE ASSY 500 (1)

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 466

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

1. Insert the left-side shaft on CHUTE ASSY 500 into the bearing on GUIDE CST L.
2. Insert the right-side shaft on CHUTE ASSY 500 into the bearing on GUIDE CST
R, and attach CHUTE ASSY 500 to 500 PAPER FEEDER ASSY.
3. Match the hole on BRACKET MAG R with the boss on 500 PAPER FEEDER
ASSY while inserting BRACKET MAG R into the notch on 500 PAPER
FEEDER ASSY, and attach BRACKET MAG R.
4. Fasten BRACKET MAG R to 500 PAPER FEEDER ASSY with the screw (silver,
6 mm).
5. Fasten CHUTE ASSY 500 to 500 PAPER FEEDER ASSY with the 2 screws
(silver, tapping, 8 mm).
6. Attach HOUSING ASSY FEED. (p.476)
7. Attach DRIVE ASSY FEED. (p.458)
8. Attach CLUTCH ASSY FEED. (p.461)
9. Attach COVER LEFT 500. (p.453) 12)
11)
10. Attach COVER RIGHT 500. (p.455)
11. Attach CHUTE FDR ASSY 500. (p.454) Leg_Sec03_517EA

12. Attach 500 PAPER CASSETTE ASSY. (p.446) Figure 4-167. Removal of CHUTE ASSY 500 (2)

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 467

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 EPSON AcuLaser C1100 Revision B

4.13.21 HOLDER ASSY RETARD 500

REMOVAL

1. Remove 500 PAPER CASSETTE ASSY. (p.446)

2. Remove CHUTE FDR ASSY 500. (p.454)
3. Remove COVER RIGHT 500. (p.455)
4. Remove COVER LEFT 500. (p.453)
10)-1
5. Remove CLUTCH ASSY FEED. (p.461) 10)-1
6. Remove DRIVE ASSY FEED. (p.458)
7. Remove HOUSING ASSY FEED. (p.476)
8. Remove CHUTE ASSY 500. (p.466)
9)-3
10)-2
C A U T IO N „ When performing the following work, take care not to 9)-1
damage the LEVER 500 boss.
„ When performing the following work, take care not to lose 9)-1
SPRING LEVER 500. 9)-2

9. Remove LEVER 500 and SPRING LEVER 500 from CHUTE ASSY 500 while
bending down the bosses on both sides of LEVER 500.

C A U T IO N „ When performing the following work, take care not to

damage the HOLDER ASSY RETARD 500 boss.
„ When performing the following work, take care not to lose
SPRING RETARD.
CAUTION CAUTION
10. Remove HOLDER ASSY RETARD 500 from CHUTE ASSY 500 while bending Leg_Sec03_038FA

down the bosses on both sides of HOLDER ASSY RETARD 500. Figure 4-168. Removal of HOLDER ASSY RETARD 500

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 468

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

C A U T IO N When performing the following work, take care not to damage the
boss of the HOLDER ASSY RETARD 500.

1. Match SPRING RETARD with the boss on CHUTE ASSY 500, and attach
HOLDER ASSY RETARD 500 to CHUTE ASSY 500 while bending down the
bosses on both sides of HOLDER ASSY RETARD 500.

C A U T IO N „ Make sure that SPRING RETARD is in the boss on HOLDER

ASSY RETARD 500 and the boss on CHUTE ASSY 500.
„ When performing the following work, take care not to
damage the boss of LEVER 500.
„ When performing the following work, pay attention to the
attachment direction of LEVER 500.

2. Attach LEVER 500 to CHUTE ASSY 500 while attaching SPRING LEVER 500
to the boss on CHUTE ASSY 500 and bending down the bosses on both sides of
LEVER 500.

C A U T IO N „ Make sure that SPRING LEVER 500 is in the boss on LEVER

500 and the boss on CHUTE ASSY 500.
„ The protrusion on LEVER 500 must be firmly inserted into
the concave portion on the bottom of HOLDER ASSY
RETARD 500.

3. Attach CHUTE ASSY 500. (p.466)

4. Attach HOUSING ASSY FEED. (p.476)
5. Attach DRIVE ASSY FEED. (p.458)
6. Attach CLUTCH ASSY FEED. (p.461)
7. Attach COVER LEFT 500. (p.453)
8. Attach COVER RIGHT 500. (p.455)
9. Attach CHUTE FDR ASSY 500. (p.454)
10. Attach 500 PAPER CASSETTE ASSY. (p.446)

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 469

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 EPSON AcuLaser C1100 Revision B

4.13.22 FILM ASSY FDR

REMOVAL

1. Open CHUTE FDR ASSY 500.

2. Remove the 4 screws (silver, tapping, 8 mm) fastening FILM ASSY FDR to
CHUTE ASSY 500.
3. Remove FILM ASSY FDR from CHUTE ASSY 500.

1)
REINSTALLATION

1. Match the hole on FILM ASSY FDR with the boss on CHUTE ASSY 500, and
attach FILM ASSY FDR while inserting the film base on FILM ASSY FDR to the
inside of CHUTE ASSY 500.
2. Fasten FILM ASSY FDR to CHUTE ASSY 500 with the 4 screws (silver, tapping,
8 mm).
3. Close CHUTE FDR ASSY 500. 3)

2)
Leg_Sec03_205FB
Figure 4-169. Removal of FILM ASSY FDR

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 470

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 EPSON AcuLaser C1100 Revision B

4.13.23 STOPPER CST R 4. Attach HOUSING ASSY FEED. (p.476)

5. Attach DRIVE ASSY FEED. (p.458)
REMOVAL
6. Attach CLUTCH ASSY FEED. (p.461)
1. Remove 500 PAPER CASSETTE ASSY. (p.446) 7. Attach COVER LEFT 500. (p.453)
2. Remove CHUTE FDR ASSY 500. (p.454) 8. Attach COVER RIGHT 500. (p.455)
3. Remove COVER RIGHT 500. (p.455) 9. Attach CHUTE FDR ASSY 500. (p.454)
4. Remove COVER LEFT 500. (p.453) 10. Attach 500 PAPER CASSETTE ASSY. (p.446)
5. Remove CLUTCH ASSY FEED. (p.461)
6. Remove DRIVE ASSY FEED. (p.458)
7. Remove HOUSING ASSY FEED. (p.476)
8. Remove CHUTE ASSY 500. (p.466)
9. Remove GUIDE CST R. (p.472)

C A U T IO N When performing the following work, take care not to lose SPG
LOCK CST LL.

10. Remove STOPPER CST R and SPG LOCK CST LL from GUIDE CST R.

10)-2

REINSTALLATION 10)-1
1. Attach SPG LOCK CST LL to the boss on STOPPER CST R, and attach
STOPPER CST R to GUIDE CST R. Leg_Sec03_181FA

Make sure that SPG LOCK CST LL is inserted into the boss on Figure 4-170. Removal of STOPPER CST R
C A U T IO N
STOPPER CST R and the boss on GUIDE CST R.

2. Attach GUIDE CST R. (p.472)

3. Attach CHUTE ASSY 500. (p.466)

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 471

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 EPSON AcuLaser C1100 Revision B

4.13.24 GUIDE CST R 8. Attach COVER LEFT 500. (p.453)

9. Attach COVER RIGHT 500. (p.455)
REMOVAL
10. Attach CHUTE FDR ASSY 500. (p.454)
1. Remove 500 PAPER CASSETTE ASSY. (p.446) 11. Attach 500 PAPER CASSETTE ASSY. (p.446)
2. Remove CHUTE FDR ASSY 500. (p.454)
3. Remove COVER RIGHT 500. (p.455)
4. Remove COVER LEFT 500. (p.453)
5. Remove CLUTCH ASSY FEED. (p.461)
6. Remove DRIVE ASSY FEED. (p.458)
7. Remove HOUSING ASSY FEED. (p.476)
9) 9)
8. Remove CHUTE ASSY 500. (p.466)
9. Remove the 5 screws (silver, tapping, 6mm) fastening GUIDE CST R to 500 9)
PAPER FEEDER ASSY. 9)
10. Remove GUIDE CST R from 500 PAPER FEEDER ASSY together with SPG
LOCK CST LL and STOPPER CST R. 10)
9)
11. Remove STOPPER CST R. (p.471)

REINSTALLATION
Leg_Sec03_039EA
1. Attach STOPPER CST R. (p.471) Figure 4-171. Removal of GUIDE CST R
2. Match the boss on the GUIDE CST R with the hole on 500 PAPER FEEDER
ASSY, and attach GUIDE CST R.
3. Fasten GUIDE CST R to 500 PAPER FEEDER ASSY with the 5 screws (silver,
tapping, 6mm).
4. Attach CHUTE ASSY 500. (p.466)
5. Attach HOUSING ASSY FEED. (p.476)
6. Attach DRIVE ASSY FEED. (p.458)
7. Attach CLUTCH ASSY FEED. (p.461)

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 472

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 EPSON AcuLaser C1100 Revision B

4.13.25 GUIDE CST L

REMOVAL

1. Remove 500 PAPER CASSETTE ASSY. (p.446)

2. Remove CHUTE FDR ASSY 500. (p.454)
10) 9)
3. Remove COVER RIGHT 500. (p.455)
4. Remove COVER LEFT 500. (p.453)
5. Remove CLUTCH ASSY FEED. (p.461)
6. Remove DRIVE ASSY FEED. (p.458)
7. Remove HOUSING ASSY FEED. (p.476)
8. Remove CHUTE ASSY 500. (p.466)
11) 11)
9. Remove the screw (silver, tapping, 8 mm) fastening CAP FEEDER to 500 PAPER
FEEDER ASSY.
10. Remove CAP FEEDER from 500 PAPER FEEDER ASSY. 11) 12)
11)
11. Remove the 5 screws (silver, tapping, 6mm) fastening GUIDE CST L to 500
PAPER FEEDER ASSY.
11)
12. To remove GUIDE CST L from SWITCH FEEDER DOOR, slide GUIDE CST L
slightly to the right, and remove GUIDE CST L from 500 PAPER FEEDER ASSY
together with SPG LOCK CST LL and STOPPER CST L.
13. Remove STOPPER CST L. (p.475) Leg_Sec03_040EA

Figure 4-172. Removal of GUIDE CST L

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 473

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

1. Attach STOPPER CST L. (p.475)

2. Match the boss on GUIDE CST L with the hole on 500 PAPER FEEDER ASSY
while inserting SWITCH FEEDER DOOR into the hole on the rear of GUIDE
CST L, and attach GUIDE CST L.
3. Fasten GUIDE CST L to 500 PAPER FEEDER ASSY with the 5 screws (silver,
tapping, 6mm).
4. Match the boss on CAP FEEDER with the hole on 500 PAPER FEEDER ASSY,
and attach CAP FEEDER.
5. Fasten CAP FEEDER to 500 PAPER FEEDER ASSY with the screw (silver,
tapping, 8 mm).
6. Attach CHUTE ASSY 500. (p.466)
7. Attach HOUSING ASSY FEED. (p.476)
8. Attach DRIVE ASSY FEED. (p.458)
9. Attach CLUTCH ASSY FEED. (p.461)
10. Attach COVER LEFT 500. (p.453)
11. Attach COVER RIGHT 500. (p.455)
12. Attach CHUTE FDR ASSY 500. (p.454)
13. Attach 500 PAPER CASSETTE ASSY. (p.446)

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 474

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 EPSON AcuLaser C1100 Revision B

4.13.26 STOPPER CST L 4. Attach HOUSING ASSY FEED. (p.476)

5. Attach DRIVE ASSY FEED. (p.458)
REMOVAL
6. Attach CLUTCH ASSY FEED. (p.461)
1. Remove 500 PAPER CASSETTE ASSY. (p.446) 7. Attach COVER LEFT 500. (p.453)
2. Remove CHUTE FDR ASSY 500. (p.454) 8. Attach COVER RIGHT 500. (p.455)
3. Remove COVER RIGHT 500. (p.455) 9. Attach CHUTE FDR ASSY 500. (p.454)
4. Remove COVER LEFT 500. (p.453) 10. Attach 500 PAPER CASSETTE ASSY. (p.446)
5. Remove CLUTCH ASSY FEED. (p.461)
6. Remove DRIVE ASSY FEED. (p.458)
7. Remove HOUSING ASSY FEED. (p.476)
8. Remove CHUTE ASSY 500. (p.466)
9. Remove GUIDE CST L. (p.473)

C A U T IO N When performing the following work, take care not to lose SPG
LOCK CST LL.

10. Remove STOPPER CST L from GUIDE CST L.

10)-2

REINSTALLATION

1. Attach SPG LOCK CST LL to the boss on STOPPER CST L, and attach 10)-1
STOPPER CST L to GUIDE CST L. Leg_Sec03_182FA

Make sure that the boss of STOPPER CST and that of GUIDE CST Figure 4-173. Removal of STOPPER CST L
C A U T IO N
L are inserted into SPG LOCK CST LL.

2. Attach GUIDE CST L. (p.473)

3. Attach CHUTE ASSY 500. (p.466)

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 475

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 EPSON AcuLaser C1100 Revision B

4.13.27 HOUSING ASSY FEED 6)

REMOVAL

1. Remove 500 PAPER CASSETTE ASSY. (p.446) 9)-1 9)-1

5)-1
2. Remove COVER LEFT 500. (p.453)
3. Remove CLUTCH ASSY FEED. (p.461)
5)-2
4. Remove DRIVE ASSY FEED. (p.458)
5. Unhook the hook on GEAR FEED fastened to the shaft on HOUSING ASSY
FEED, and remove GEAR FEED.
6. Disconnect connector (P/J618) from HOUSING ASSY FEED.
7. Remove the screw (silver, with flange, 6 mm) fastening HOUSING ASSY FEED
to 500 PAPER FEEDER ASSY.
8. Insert both hands from the front side of 500 PAPER FEEDER ASSY, pull the 2
levers on HOUSING ASSY FEED towards you, and remove the boss on
HOUSING ASSY FEED from the hole on 500 PAPER FEEDER ASSY.
9. Slide HOUSING ASSY FEED to the front side, unhook the 4 hooks at the top
fastened to 500 PAPER FEEDER ASSY, remove the hole on HOUSING ASSY ROLL ASSY
FEED from the protrusion at the front side of 500 PAPER FEEDER ASSY, and
9)-2 TURN 500
push down HOUSING ASSY FEED to remove.
CAUTION
ACTUATOR
7) T/R

8)-2 8)-2
8)-1 8)-1
Leg_Sec03_032EB

Figure 4-174. Removal of HOUSING ASSY FEED

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 476

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 EPSON AcuLaser C1100 Revision B

REINSTALLATION

C A U T IO N When performing the following work, take care not to damage

ACTUATOR T/R attached to HOUSING ASSY FEED. Also, make
sure that ACTUATOR T/R locates at the position above ROLL
ASSY TURN 500.
1. Match the 4 hooks on HOUSING ASSY FEED with the attachment positions, and
attach to 500 PAPER FEEDER ASSY.
2. Slide HOUSING ASSY FEED to the rear side, insert the boss on HOUSING
ASSY FEED into the hole on 500 PAPER FEEDER ASSY, and insert the
protrusion on 500 PAPER FEEDER ASSY into the hole at the front side of
HOUSING ASSY FEED.
3. Fasten HOUSING ASSY FEED to 500 PAPER FEEDER ASSY with the screw
(silver, with flange, 6 mm).
4. Connect connector (P/J618) to HOUSING ASSY FEED.
5. Attach GEAR FEED to the shaft on HOUSING ASSY FEED, and fasten the hook
on GEAR FEED to the groove on the shaft of HOUSING ASSY FEED.
6. Attach DRIVE ASSY FEED. (p.458)
7. Attach CLUTCH ASSY FEED. (p.461)
8. Attach COVER LEFT 500. (p.453)

Attach 500 PAPER CASSETTE ASSY. (p.446)

Table 4-18. Symptoms when the connector is loose

Connector Error Caused by Connector
Panel Indication Symptom
No. Disconnection
Printing is not
P/J618 Paper Out LC1 No paper in Paper Cassette
possible.

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 477

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 EPSON AcuLaser C1100 Revision B

4.13.28 SENSOR NO PAPER 6. Attach DRIVE ASSY FEED. (p.458)

7. Attach CLUTCH ASSY FEED. (p.461)
REMOVAL
8. Attach COVER LEFT 500. (p.453)
1. Remove 500 PAPER CASSETTE ASSY. (p.446) 9. Attach 500 PAPER CASSETTE ASSY. (p.446)
2. Remove COVER LEFT 500. (p.453)
6)
3. Remove CLUTCH ASSY FEED. (p.461)
4. Remove DRIVE ASSY FEED. (p.458) 6)
7)
5. Remove HOUSING ASSY FEED. (p.476)
6. Remove the 2 screws (silver, tapping, 8 mm) fastening COVER FEED to
HOUSING ASSY FEED.
7. Remove COVER FEED from HOUSING ASSY FEED.
8. Unhook the 3 hooks fastening SENSOR NO PAPER to HOUSING ASSY FEED,
and remove SENSOR NO PAPER.
9. Disconnect connector (P/J119) from SENSOR NO PAPER.

REINSTALLATION

C A U T IO N When performing the following work, pay attention to the

positional relationship between SENSOR NO PAPER and 8)-1
ACTUATOR NO PAPER CST.

1. Connect connector (P/J119) to SENSOR NO PAPER.

2. Match the hook on SENSOR NO PAPER with the attachment position while
inserting ACTUATOR NO PAPER CST into the sensor on SENSOR NO PAPER,
and attach to HOUSING ASSY FEED.
3. Attach COVER FEED to HOUSING ASSY FEED.
9) 8)-2
4. Fasten COVER FEED to HOUSING ASSY FEED with the 2 screws (silver, CAUTION
tapping, 8 mm).
Leg_Sec03_033FA
5. Attach HOUSING ASSY FEED. (p.476)
Figure 4-175. Removal of SENSOR NO PAPER

DISASSEMBLY AND ASSEMBLY 500 PAPER CASSETTE & 500 PAPER FEEDER 478

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 EPSON AcuLaser C1100 Revision B

4.13.29 ACTUATOR NO PAPER CST 6)-1

6)-2
REMOVAL

1. Remove 500 PAPER CASSETTE ASSY. (p.446)

2. Remove COVER LEFT 500. (p.453)
3. Remove CLUTCH ASSY FEED. (p.461)
4. Remove DRIVE ASSY FEED. (p.458)
5. Remove HOUSING ASSY FEED. (p.476)
6. Unhook the 3 hooks fastening CAP ACTUATOR to HOUSING ASSY FEED, and
remove CAP ACTUATOR.
7. Remove the 2 screws (silver, tapping, 8 mm) fastening COVER FEED to
HOUSING ASSY FEED.
8. Remove COVER FEED from HOUSING ASSY FEED.
9. Draw out the shaft of ACTUATOR NO PAPER CST from the hook on HOUSING
ASSY FEED, slide along the notch on HOUSING ASSY FEED, and remove
ACTUATOR NO PAPER CST. Leg_Sec03_206FA
Figure 4-176. Removal of ACTUATOR NO PAPER CST (1)

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REINSTALLATION 7)

When performing the following work, pay attention to the 7)

C A U T IO N
positional relationship between SENSOR NO PAPER and
ACTUATOR NO PAPER CST.
8)
1. Insert the shaft on ACTUATOR NO PAPER CST from the notch on HOUSING
ASSY FEED.
2. Fit the shaft on ACTUATOR NO PAPER CST onto the hook on HOUSING
ASSY FEED while inserting ACTUATOR NO PAPER CST into the sensor on
SENSOR NO PAPER, and attach.
3. Attach COVER FEED to HOUSING ASSY FEED.
4. Fasten COVER FEED to HOUSING ASSY FEED with the 2 screws (silver,
tapping, 8 mm).
5. Match the hole on CAP ACTUATOR with the boss on HOUSING ASSY FEED,
and attach CAP ACTUATOR.
6. Attach HOUSING ASSY FEED. (p.476)
7. Attach DRIVE ASSY FEED. (p.458)
8. Attach CLUTCH ASSY FEED. (p.461)
9)-1 9)-2
9. Attach COVER LEFT 500. (p.453)
10. Attach 500 PAPER CASSETTE ASSY. (p.446)

NOTE

Leg_Sec03_034FA
Figure 4-177. Removal of ACTUATOR NO PAPER CST (2)

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4.13.30 ACTUATOR T/R 9)

REMOVAL

1. Remove 500 PAPER CASSETTE ASSY. (p.446) 7) 8)

2. Remove COVER LEFT 500. (p.453)
3. Remove CLUTCH ASSY FEED. (p.461)
4. Remove DRIVE ASSY FEED. (p.458)
5. Remove HOUSING ASSY FEED. (p.476)
6. Remove ROLL ASSY FEED 500. (p.483)
7. Remove SPRING ACTUATOR from the notch on HOUSING ASSY FEED.
8. Draw out the shaft on ACTUATOR T/R from the hook on HOUSING ASSY
FEED, and remove ACTUATOR T/R together with SPRING ACTUATOR.
9. Remove SPRING ACTUATOR from ACTUATOR T/R.

REINSTALLATION

1. Attach SPRING ACTUATOR to ACTUATOR T/R.

2. Fit the shaft on ACTUATOR T/R into the hook on HOUSING ASSY FEED, and
attach ACTUATOR T/R together with SPRING ACTUATOR.
3. Hook SPRING ACTUATOR onto the notch on HOUSING ASSY FEED.

C A U T IO N SPRING ACTUATOR must be firmly hooked onto the notch on

ACTUATOR T/R and HOUSING ASSY FEED.

4. Attach ROLL ASSY FEED 500. (p.483)

CAUTION
5. Attach HOUSING ASSY FEED. (p.476) Leg_Sec03_035FA
Figure 4-178. Removal of ACTUATOR T/R
6. Attach DRIVE ASSY FEED. (p.458)
7. Attach CLUTCH ASSY FEED. (p.461)
8. Attach COVER LEFT 500. (p.453)
9. Attach 500 PAPER CASSETTE ASSY. (p.446)

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4.13.31 SENSOR T/R

9)-1
REMOVAL

1. Remove 500 PAPER CASSETTE ASSY. (p.446)

2. Remove COVER LEFT 500. (p.453)
3. Remove CLUTCH ASSY FEED. (p.461)
4. Remove DRIVE ASSY FEED. (p.458)
5. Remove HOUSING ASSY FEED. (p.476)
6. Remove ROLL ASSY FEED 500. (p.483)
8) 9)-2
7. Remove ACTUATOR T/R. (p.481)
8. Disconnect connector (P/J120) from SENSOR T/R.
9. Unhook the three hooks fastening SENSOR T/R to HOUSING ASSY FEED, and
remove SENSOR T/R.

REINSTALLATION

1. Match the hooks on SENSOR T/R with the attachment positions, and attach to
HOUSING ASSY FEED.
2. Connect connector (P/J120) to SENSOR T/R. Leg_Sec03_036FA
3. Attach ACTUATOR T/R. (p.481) Figure 4-179. Removal of SENSOR T/R
4. Attach ROLL ASSY FEED 500. (p.483)
5. Attach HOUSING ASSY FEED. (p.476)
6. Attach DRIVE ASSY FEED. (p.458)
7. Attach CLUTCH ASSY FEED. (p.461)
8. Attach COVER LEFT 500. (p.453)
9. Attach 500 PAPER CASSETTE ASSY. (p.446)

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4.13.32 ROLL ASSY FEED 500 6)

REMOVAL
6)
1. Remove 500 PAPER CASSETTE ASSY. (p.446)
2. Remove COVER LEFT 500. (p.453) 7)
3. Remove CLUTCH ASSY FEED. (p.461)
4. Remove DRIVE ASSY FEED. (p.458)
9)
5. Remove HOUSING ASSY FEED. (p.476)
6. Remove the 2 screws (silver, tapping, 8 mm) fastening COVER FEED to
HOUSING ASSY FEED.
7. Remove COVER FEED from HOUSING ASSY FEED.
8. Remove the E-rings fastening both sides of SHAFT FEED from HOUSING ASSY 8)-1 8)-2
FEED, and remove the left and right BEARING SLEEVEs.
9. Temporarily slide SHAFT FEED to the right, draw out SHAFT FEED from the
left-side bearing on HOUSING ASSY FEED, and remove together with ROLL
ASSY FEED 500 and ROLL SUPPORT 500.
10. Unhook the hook on ROLL SUPPORT 500 on the right side fastened to SHAFT
FEED, and remove ROLL SUPPORT 500. 8)-1
11. Unhook the hook on ROLL ASSY FEED 500 fastened to SHAFT FEED, and
remove ROLL ASSY FEED 500.
8)-2

11)-2

11)-1
10)-1

10)-2

Leg_Sec03_037FA
Figure 4-180. Removal of ROLL ASSY FEED 500

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REINSTALLATION

C A U T IO N When performing the following work, pay attention to the

attachment direction of ROLL ASSY FEED 500.

1. Attach ROLL ASSY FEED 500 to SHAFT FEED so that the hook on ROLL
ASSY FEED 500 is facing the right side, and fasten the hook on ROLL ASSY
FEED 500 to the groove on SHAFT FEED.
2. Attach ROLL SUPPORT 500 to SHAFT FEED, and fasten the hook on ROLL
SUPPORT 500 to the groove on SHAFT FEED.
3. Insert the right side of SHAFT FEED into the right-side bearing on HOUSING
ASSY FEED, then slide SHAFT FEED to the left, and attach together with ROLL
ASSY FEED 500 and ROLL SUPPORT 500.
4. Match the double D cut surface of BEARING SLEEVE with the left and right
bearings of HOUSING ASSY FEED, attach BEARING SLEEVE, and fasten both
sides of SHAFT FEED with the E-rings.
5. Attach COVER FEED to HOUSING ASSY FEED.
6. Fasten COVER FEED to HOUSING ASSY FEED with the 2 screws (silver,
tapping, 8 mm).
7. Attach HOUSING ASSY FEED. (p.476)
8. Attach DRIVE ASSY FEED. (p.458)
9. Attach CLUTCH ASSY FEED. (p.461)
10. Attach COVER LEFT 500. (p.453)
11. Attach 500 PAPER CASSETTE ASSY. (p.446)

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 CHAPTER

5
ADJUSTMENT

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5.1 Overview
This chapter explains the adjustment necessary to maintain the functions and performance of the AcuLaser C1100.

5.1.1 Instructions
Before starting your adjustment work, always check the CAUTION on the right.

C A U T IO N „ Refer to “ 5.1.2 Part/unit-based adjustment items” (p.486), always confirm the adjustment items and the orders for the replaced/removed parts and
units in advance.
„ Start adjustment after fully checking the Caution given in the explanation area of each adjustment item. Incorrect work may interfere with the
product operations and/or functions.

5.1.2 Part/unit-based adjustment items

The following table indicates the adjustment items and life counter clear items necessary when the specific unit is replaced or removed.

Table 5-1. Adjustment Item List

Repaired Part Adjustment Item Execution Timing Adjustment Execution Means Reference
FUSER ASSY Life counter clear Execute by the operation panel
After replacement with a new one p.497
(Maintenance Menu [Reset Fuser Counter])
2ND BTR ASSY Life counter clear Execute by the operation panel
After replacement with a new one p.497
(Maintenance Menu [Reset 2ndBTRCounter])
HOUSING ASSY-DEVE Life counter clear Execute by the operation panel
After replacement with a new one p.497
(Maintenance Menu [Reset X DvopCounter])
BOARD ASSY., MAIN Writing USB ID After replacement with a new one Execute by the dedicated program p.487
Controller Firmware Update Start the printer by performing special operation [Program ROM
— — p.489
update], and send the firmware data from the PC.
MCU Firmware Update Start the printer by performing special operation [Engine program
— — p.490
update], and send the firmware data from the PC.

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5.1.3 Writing USB ID 5.1.3.1 Installing the Program and the Basic Operation
AcuLaser C1100 is equipped with a USB interface as a standard feature. The PC 1. Copy a set of files related to USB-ID input program into a folder.
connected to the printer via the USB interface identifies the printer by referring to the
USB ID information specific to each printer. This USB ID information is stored on C A U T IO N Be sure to store the setting information file (Setting.ini) in the same
EEPROM on the controller of the printer. Therefore, you have to rewrite the ID drive holder where the main program file is stored.
information by the procedure described below when you have replaced the BOARD
ASSY., MAIN with a new one.

The following are the name of the program to input the ID, and the operating
2. Double-click the program icon [ ] to start the program.
environment.
3. Select “AL-C1100” at the [Model Name].
† Program
4. Select the port used to connect the printer at the [Interface].
PagePrinter_Ver10E.exe
† Operating environment C H E C K If you select “Auto”, connected printers are detected and
P O IN T communication with the first detected one start automatically.
„ OS: When connecting with 2 or more printers, specify the target port to
Windows95 OSR2.0 or later, Windows98, Windows Me
avoid unexpected connection since the auto detection varies
or Windows 2000/XP
depending on the connection state.
„ Port used:
LPT, USB

Figure 5-1. Basic Operation

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 EPSON AcuLaser C1100 Revision B

5.1.3.2 Writing Method

The method of writing USB ID differs according to the condition of the main board. Referring to the following table, figure out what to do depending on the conditions.
Follow the instructions shown in the program to do the writings.
Table 5-2. Writing Method
Writing Method
Condition of Main Board Check of the previous ID Descriptions
(Button Name)
Communication is impossible between The previous ID can be confirmed by a status sheet or Enter the previous ID to write it into the new Main Board.
Store optional ID
PC and the Main Board something else that has been already printed out.
There is no way to confirm the previous ID. Store auto-generated The program automatically creates the new ID from the serial
NEW ID number of the printer and write it into the new Main Board.
Communication is possible between PC (Can retrieve the previous ID from the previous Main Board) OLD ID Retrieval/ Retrieve the ID from the old board, and then enter the retrieved
and the Main Board Restore ID value into the new board.

† Store optional ID † OLD ID Retrieval/Restore

† Store auto-generated NEW ID

5.1.3.3 Confirming the Writing
When completed to write USB-ID, print a status sheet to confirm that the serial number
printed on the sheet is identical to that on the label attached to the printer.
(Refer to “ 1.19 Status Sheet” (p.67))

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 EPSON AcuLaser C1100 Revision B

5.1.4 Controller Firmware Update 12. Turn the printer back on and print a status sheet.
13. Referring to the status sheet printed in step 1, make sure the program firmware version
This section explains a Controller firmware update.
has been updated.
NOTE: The computer should be able to send binary data under DOS via a
parallel interface.

1. Print a status sheet, and check the current firmware version.

2. After turning the power off for both the printer and computer, connect them with a
parallel cable.

C A U T IO N Disconnect all interface cables except the parallel cable in advance.

3. After turning the computer back on, copy the program data for the update (file
name.CRB) to any route directory of the computer.
4. Turn the printer on while pressing the [Down], [Job Cancel] and [Start/Stop] buttons.
5. The LCD panel of the printer will indicate the messages as follows:
Program Device Ver. xx.xx Please Send Data

6. Check that the message “Please Send Data” is indicated on the LCD panel.
7. To transfer the program data file from the computer to the printer, type the command
(shown below) on the DOS prompt (from the directory that has “****.crb”) and press
the ENTER key of the computer.
copy /b filename.crb LPT1

8. The LCD panel of the printer will indicate the message as follow:
OLD: xxxx NEW: xxxx

9. Press the [Enter] button on the operation panel of the printer.

10. Message will be changed as follow
Erasing Device PRG FF XXXXC0

11. When downloading the program data is finished, the checksum will be indicated on the
LCD panel. Confirm the checksum and turn the printer off.

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5.1.5 MCU Firmware Update

C A U T IO N In Step 9 below, press the [Enter] button after making sure that the
This section explains an MCU firmware (engine firmware) update. engine has completely stopped.

NOTE: The computer should be able to send binary data under DOS via a
parallel interface.
9. Press the [Enter] button on the operation panel of the printer. This displays the
following message and starts writing.
1. Print a status sheet or engine status sheet to check the current MCU firmware version. Writing:Size=******
(Refer to “ 1.19 Status Sheet” (p.67), “ 6.4.1 Engine Status Sheet” (p.499))
10. When the writing is completed, the following message appears and the printer
2. Turn the power off for both the printer and computer, and connect them with a parallel automatically starts warm-up operation.
cable.
TYPE:***** SUM=****

C A U T IO N Disconnect all interface cables except the parallel cable.

C A U T IO N In Step 11 below, turn the printer off after making sure that the
engine has completely stopped.

3. After turning the computer back on, copy the program data for the update (file
name.MOT) to any route directory of the computer.
11. Confirm the check sum and turn the printer off.
4. Turn the printer on while pressing the [Up], [Down], [Job Cancel] and [Start/Stop]
12. After turning the printer back on, print a status sheet or engine status sheet.
buttons.
13. Compare the status sheet or engine status sheet printed in Step 1, and confirm that the
5. The LCD panel of the printer will indicate the messages as follows:
MCU firmware version has been updated. (Refer to “ 1.19 Status Sheet” (p.67), “
Engine Firmware Update EFU Ver. 100 Please send EFU data 6.4.1 Engine Status Sheet” (p.499))

6. Check that the message “Please Send EFU Data” is indicated on the LCD panel.
7. To transfer the program data file from the computer to the printer, type the command
(shown below) on the DOS prompt and press the ENTER key of the computer.
copy /b file name.mot LPT1

8. The LCD panel of the printer will indicate the message as follow:
send size=********** SEND SIZE=********** Type:***** sum=****

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 CHAPTER

6
MAINTENANCE

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6.1 Overview
W A R N IN G „ Take extra care not to let the laser beam get into your eye, or
This section gives information necessary for maintaining the printer in its optimum it could cause loss of sight.
condition. „ While servicing the laser printer, never open any cover on
In maintenance and checks, never fail to observe the following precautions. which a Warning Label for Laser beam is attached.
„ Use extreme caution to avoid injury of yourself and anyone
around you with a clear understanding of hazardous nature
W A R N IN G „ To prevent an electric shock, burn, injury, etc., always turn of the laser beam.
the printer off and unplug it from power outlet before „ When you need to work on the hot part or unit (Fuser Assy,
starting maintenance work. for example), make sure to unplug the printer from power
When the power supply cable must be connected to measure outlet in advance. And do not start the work basically until
voltage or for any other task, use extreme caution in working the part or unit cool down sufficiently to avoid burn injury.
on electronic components. „ This printer produces a laser beam when the following
„ While the printer is operating, never inspect the drive areas conditions are all satisfied.
such as the motor, sprockets and gears. • The printer turns on.
„ Weight: Since this printer is heavy (about 25kg, • The interlock switches are OFF.
consumables not included), it should be moved by two or
„ Do not use a general vacuum cleaner to clean spilt toner. To
more people and lift it with your legs not with your back.
do so may cause the sucked toner particles to catch fire by
„ Safety devices: Special care must be taken to maintain safety sparks of the electric contacts. If the toner has spilt on the
devices such as fuse, INTERLOCK S/W, which are provided floor, etc., clean it with a broom or wipe it with a cloth
to prevent the printer from malfunction and accidents, and moistened with neutral detergent. If it is necessary to clean a
also carefully check the parts such as panel, covers, which are lot of spilt toner with a cleaner, use a cleaner exclusively
directly operated by the user. designed for toner.
„ Immediately after the printer has stopped operating, do not
touch the FUSER ASSY (Fuser unit) as it is hot.
„ Pay attention to the following when turning the printer back
on after servicing.
• Be careful not to get your hands and clothes caught up in
the rotating parts (various rollers and cooling fans) of the
printer.
• Never touch the electrical terminals and high-voltage
components. (HVPS or LVPS unit, etc.)
„ To avoid dust explosion or ignition, never bring any
consumables close to flame or throw them into fire.

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C A U T IO N „ Since this printer has many metal parts, beware of the frame
edges and similar portions and be sure to wear gloves to work.
„ Do not disassemble the Toner Cartridge and the
Photoconductor Unit.
„ Do not expose the Photoconductor Unit to direct sunlight.
„ Do not disassemble the ROS ASSY.
„ Do not touch the onboard components by bare hands to
prevent the ICs and other electrical components from being
damaged by static electricity. (When necessary, wear a wrist
strap.)
„ To ensure safety and workability, use the specified tools.
„ Do not turn the printer’s power off S/W until all motors stop
completely.
„ Should the printer be transported, use the special packing
material, pallet, etc.
„ Do not use alcohol, paint thinner, or any other such solvents.

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6.2 About On-site Servicing 6.2.1 On-site Servicing Flowchart

This section explains the maintenance work to be done when you actually visit the user What to Do First
site. To prevent possible accidents during maintenance work, strictly observe the
servicing warnings and cautions. Never perform dangerous operations. 1. Ask the user about the printer
conditions.
2. Ensure safety.
C A U T IO N „ When it is necessary to transport the main unit, use the 3. Grasp the printer conditions from
special packing material, pallet, etc. the status sheet.
„ Bring trash created during the work, and old parts or 4. Grasp how the printer has been used
consumables that are replaced, back. from the engine status sheet.
Never leave them at the customer’s place.
„ Before starting your work, spread a sheet of cloth or paper
over the working place to prevent the place from getting dirt Trouble Repeatability Check Which is the Purpose of Visit?
with spilt toner.
Perform Chapter3 Repair Maintenance
“TROUBLESHOOTING”

Image quality check

Cleaning

Preventive maintenance

Replacement of regular replacement parts and

main after-sales service parts

General operation checks

What to Do Last

1. Check the printer appearance.

2. Train the user as necessary

Figure 6-1. On-site Servicing Flowchart

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6.2.2 Details of On-site Servicing Image Quality Check

This section explains the details of on-site servicing. 1. Print the status sheet and confirm the image quality.

What to Do First <Image quality check items>

„ Color balance
1. Ask the user about the printer conditions.
„ Color shift
„ Frequency of paper feeding errors (jams)
„ Density (color) unevenness
„ How the printer has been used (paper type, printing frequency, environment,
etc.) „ Poor color reproducibility with low density
„ Image quality status (front and back, separately) „ Others
2. Check how the power cord is plugged, damage to the cord and plug, etc. to ensure 2. If any of the image quality problem described above is shown:
safety. „ Take corrective action with reference to “3.4 Printing Quality-related
3. Print and check several status sheets to grasp the printer conditions. Trouble” (p242) of Chapter3 “TROUBLESHOOTING”.

4. Print the engine status sheet, and grasp the lives of the consumables, regular
Cleaning
replacement parts and how the printer has been used.
1. Check the paper path and remove paper dust and foreign matter. Clean the path
Trouble Repeatability Check with a brush or dry cotton waste when it is dirty. Especially check the following.

Do “Troubleshooting” in Chapter3. „ Rollers in the paper transport path

NOTE: When the parts are extremely dirty, clean them with a wet cloth, and
1. Refer to “3.2 FIP” (p124) and confirm the trouble conditions and execute
then wipe them with a dry cloth. Be careful not to scratch the parts.
troubleshooting.
2. Check the entire printer inside and remove spilt toner, paper dust and foreign
2. If a fatal image quality problem (all white, all black, etc.) has occurred due to an
matter. Clean a dirty part or area with a brush or dry cotton waste. Especially
engine fault, perform troubleshooting with reference to “3.4 Printing Quality-
check the following.
related Trouble” (p242).
„ Around the exhaust vent
„ Around the HOUSING ASSY-DEVE (Developer unit)
3. When printing quality trouble occurs, pull out the Cleaner once to clean the
exposure window.

C A U T IO N Clogging of the exhaust vent and fan produces an increase in

temperature inside the printer and cause the printer to
malfunction.

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Preventive Maintenance
(Consumables/Components needing periodic replacement)

Do preventive maintenance work to maintain the printer performance and prevent

failures from occurring.

1. After completion of repair or maintenance, print several status sheets and make
sure that there are no problems.
2. After completion of repair or maintenance, print the engine status sheet.
NOTE: The judgement whether to replace components needing periodic
replacement can be done by the cumulative numbers of printed sheets.
Replace the components as the occasion arises.

Replacement of Consumables and Components needing Periodic Replacement

Do the replacement with reference to “6.5 Consumables and Components needing

Periodic Replacement” (p506).

General Operation Checks

After completion of servicing, make general operation checks. Print a status sheet and
perform several printjobs from the host computer testing both one-side printing and
duplex printing (if an optional unit for dupulexing is installed).

1. Make sure that there are no image quality problems.

2. Make sure that the paper feeding is normal and there is no abnormal noise.

What to Do Last

1. Check the appearance of the printer.

2. If necessary, inform the user on how to handle the printer, deal with paper jam, and
replace the consumables.

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6.3 Maintenance Menu † Reset Y (M, C, K) DvlpCounter

Reset the counter of the Y (M, C, K) developer unit consumption and count up the
exchange counter. The counter must be reset after the Y (M, C, K) developer unit
is replaced with a new one. After executing the counter reset, open and close the
C A U T IO N This menu is provided only for a service personnel to perform cover A. Do not turn the printer off until the engine stops completely.
maintenance.
Do not disclose it to the users. † Reset Fuser Counter
Reset the counter of the fuser assy consumption and count up the exchange
counter. The counter must be reset after the Fuser unit is replaced with a new one.
When resetting the counter, the number of printed pages for the Fuser Assy is
This menu is displayed and selectable only when a special operation performed at
stored on the EEPROM. The stored value will be printed on the Engine Status
power-on to enter the maintenance mode. Basically, this menu is provided to be used
Sheet as the number of previous replacement.
by a service personnel for maintenance.
At the time of maintenance, print the Engine Status Sheet from the Maintenance Menu Same function is also available in the reset menu. (See “ Reset
C H E C K
and grasp the usage conditions of various consumables and components needing P O IN T Menu” (p50))
periodic replacement.

6.3.1 Maintenance Menu Items

† Clear Error Log
This menu is displayed and selectable only when a special operation performed at
Clear error log list stored for display on Engine Status Sheet.
power-on to enter the maintenance mode.
Performing this operation reboots the printer.
When the power is then turned off once and on again, the Maintenance Menu is deleted
(the printer returns to the normal operating mode). † MCU DATA BackUp*3
Backup the data of the engine. "MCU Data BackUp" is displayed until back up
† Engine Status Sheet*1
processing ends.
Before entering the maintenance mode, make sure that there is no engine-related
service call in the normal operating mode (not maintenance mode). † MCU DATA Restore*3
After the printer enters into the maintenance mode, press the Enter switch to print Restore the data of the engine to the mechanical controller. "MCU DATA
an engine status sheet. The sheet is printed according to the default settings, except Restore" is displayed until restore processing ends.
RIT, toner save, and resolution settings (current settings are applied for those
settings). While the printing is in progress, the LCD keeps flashing. The user NOTE *1: Refer to “6.4.1 Engine Status Sheet” (p499)
default environment (settings) does not change after the printing. *2: Refer to “6.4.2 Print Log Report” (p504)
The contents of the engine status sheet are the counted values of each unit which *3: Execution of the mechanical controller backup is not possible in the
makes up the printer engine. following states:
† Print Log Report*2 • During a power save
Prints a log file of printing status. • During warming-up
• During printing
† Reset 2ndBTRCounter • During printer adjustments
Reset the counter of the 2nd BTR assy consumption and count up the exchange The power must not be turned OFF during the backup/restore process
counter. The counter must be reset after the 2nd BTR assy is replaced with a new until the engine has stopped.
one. After executing the counter reset, open and close the cover A. Do not turn the
printer off until the engine stops completely.

MAINTENANCE Maintenance Menu 497

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6.3.2 Entry into Maintenance Mode

[Enter] SW A [Enter] SW
1. While holding down the [Back], [Up], [Down] and [Enter] buttons, turn the printer
Maintenance Menu Engine Status Sheet Print execution
on.
[Up] SW [Down] SW
When the printer is turned on, all LEDs and LCD light and the following message
is then displayed. Information Menu Print Log Report Print execution
(When “MAINTENANCE MODE” appears, release your hand from the [Up] SW
switches.)
Ready Reset 2ndBTRCounter Clear execution
RAM CHECK **.*MB MAINTENANCE MODE Ready
2. Refer to the Maintenance Menu process flowchart in Figure6-2, perform each Clear execution
Reset C DvlpCounter
function of the Maintenance Menu by operating the panel switches.

NOTE 1: Disconnect all the Interface Cables in advance.

Reset M DvlpCounter Clear execution
2: Engine-related service call errors are ignored when the Maintenance
Mode starts. Before starting the printer in the Maintenance Mode and
executing printing, make sure that no errors have occurred in the normal
operating mode. Reset Y DvlpCounter Clear execution
3: To exit from the Maintenance Menu, make sure that the engine is not
operating and then turn the printer off.
Reset K DvlpCounter Clear execution

Reset Fuser Counter Clear execution

Clear Error Log Clear execution

MCU DATA BackUp Command

execution

MCU DATA Restore Command

A execution

Figure 6-2. Maintenance Menu Process Flowchart

MAINTENANCE Maintenance Menu 498

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6.4 Sheet for Servicing † Photoconductor : Number of revolutions of photoconductor.

† Photoconductor Change : Number of replacements of Photoconductor Unit.
6.4.1 Engine Status Sheet † Fuser : Total number of pages printed using the current
FUSER ASSY
C A U T IO N This Engine Status Sheet is used only by a service personnel for
† Fuser Change : Number of replacements of FUSER ASSY. /
maintenance, and must not be disclosed to the users.
Number of pages printed at the time of replacing the
previous.
† 2nd BTR : Total number of pages printed using the current 2nd
6.4.1.1 Engine Status Sheet Items BTR.
† 2nd BTR Change : Number of replacements of 2nd BTR ASSY.

† Total Counts † Development Unit

„ Total Pages : Total number of pages printed to date. „ C Development : Operating time of the motor for Developer C.

„ Color Pages : Total number of pages printed in color to date. „ M Development : Operating time of the motor for Developer M.

† Jam Counts : Number of occurrence of a jam. „ Y Development : Operating time of the motor for Developer Y.

† ET Cartridge (Toner Cartridge) „ K Development : Operating time of the motor for Developer K.

„ C Toner : Amount of C toner used (dispense time), C toner „ C Deve Change : Number of replacements of HOUSING ASSY-
limit value, C total dots. DEVE C.

„ M Toner : Amount of M toner used (dispense time), M toner „ M Deve Change : Number of replacements of HOUSING ASSY-
limit value, M total dots. DEVE M.

„ Y Toner : Amount of Y toner used (dispense time), Y toner „ Y Deve Change : Number of replacements of HOUSING ASSY-
limit value, Y total dots. DEVE Y.

„ K Toner : Amount of K toner used (dispense time), K toner „ K Deve Change : Number of replacements of HOUSING ASSY-
limit value, K total dots. DEVE K.

„ C Toner Change : Number of replacements of C toner (for4K), That of

C toner (for 1.5K).
„ M Toner Change : Number of replacements of M toner (for 4K), That
of M toner (for 1.6K).
„ Y Toner Change : Number of replacements of Y toner (for 4K), That
of Y Toner (for 1.7K).
„ K Toner Change : Number of replacements of K toner (for 4K), That
of K Toner (for 1.8K).

MAINTENANCE Sheet for Servicing 499

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† 2nd BTR Offset Table 6-1. Jam code

„ Normal : Setting value of the transfer voltage for plain paper. Bit Location of jam
„ SemiThk : Setting value of the transfer voltage for High quality 31-24 ---
paper. 23 At Exit sensor
„ Thick : Setting value of the transfer voltage for thick paper. 22 At Fuser In sensor
21 At Regi sensor
„ ExtraThk : Setting value of the transfer voltage for Extra thick
paper. 20 At OHP sensor
19 At Tray Path1 sensor
„ Card : Setting value of the transfer voltage for postcard
paper. 18 At Tray Path2 sensor
17 At Dup In sensor
„ Envelope : Setting value of the transfer voltage for envelope.
16 At Dup Out sensor
† Power On : Number of times power is turned on.
15 After Exit sensor turns off, Dup In sensor does not turn off
† Sleep : Number of times printer returns from standby mode. 14 After Dup In sensor turns on, Dup Out sensor stays off
† Engine Version 13 After Duplex loading signal, Regi sensor stays off
„ MCU : Firmware version of mechanical controller. 12 After Regi sensor turns off, Exit sensor stays off
11 After Regi Roll turns on, Exit Fuser In sensor stays off
„ Duplex : Firmware version of the Duplex unit.
10 ---
† Error Log : Displays the latest 20 errors listing in order of the
The setting is for transparency, but media other than transparencies
number of pages with the largest one first. The
9 was fed. The setting is for other than transparency, but transparencies
description for each error consists of; the panel
were fed.
message, the EJL status code, the number of printed
sheets, the jam code, the paper size, and the paper 8 ---
type. 7 After Regi Roll turns on, Exit sensor stays off. Fuser In sensor off
Service call errors which occurred after the Ready 6 After Regi Roll turns on, Exit sensor is stays off. Fuser In sensor on
mode and jam errors are included.
5 After Regi Roll turns on, Regi sensor stays on
The errors with the same total pages as a previously
recorded error are not included. 4 Regi sensor signal from cassette 1 or 2 is not received.
3 Regi sensor signal from MP tray is not received.
„ Jam code : The location of the jam is indicated by 8-digit
hexadecimal strings as bit data. 2 Tray Path1 sensor signal from cassette 1 is not received.
1 (Tray Path1 sensor signal from cassette 2) is not received.
0 (Tray Path2 sensor signal from cassette 2) is not received.

MAINTENANCE Sheet for Servicing 500

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 EPSON AcuLaser C1100 Revision B

„ Paper size:
Indicated same as the panel display.
„ Paper type:
Indicated as the specified value set for each media to control the engine.

Table 6-2. Paper type

Paper type Front side Back side
Plain paper 9 25
High quality paper 8 24
Thick paper 4 20
Extra thick paper 10 26
Coated paper 7 23
Transparency 2 ---
Labels 5 ---
Envelopes 15 ---
Postcards 14 30
Note *1: The date and time are indicated in the local time when generated. (yy/mm/dd hh:mm
(The date and time is not re-calculated even if the time difference is changed.)) yy
are the lower two digits of the calendar year.
In the non-synchronous mode, “--/--/-- --:--” is displayed.
*2: The value of the total dot counter on ASIC is used in the dot calculation. Threshold is
128.

Figure 6-3. Engine Status Sheet

MAINTENANCE Sheet for Servicing 501

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 EPSON AcuLaser C1100 Revision B

6.4.1.2 List of information managed and methods of management

Table 6-3. List of information managed and methods of management

Count processing
Information name and storage Range Unit Count conditions Clear conditions
location
Total Pages Controller 0 to 99,999,999 pages During printing (EEPROM initialization)
Color Pages Controller 0 to 99,999,999 pages During printing (EEPROM initialization)
Jam Counts Controller 0 to 100,000 Times When a jam occurs (EEPROM initialization)
C Toner Dispense time Engine 0 to 99,999,999 msec During printing New C toner detected
Limit value Engine msec (Fixed value) ---
Total dots Controller 0 to 2,147,483,647 --- 4096dots (EEPROM initialization)
M Toner Dispense time Engine 0 to 99,999,999 msec During printing New M toner detected
Limit value Engine msec (Fixed value) ---
Total dots Controller 0 to 2,147,483,647 --- 4096dots (EEPROM initialization)
Y Toner Dispense time Engine 0 to 99,999,999 msec During printing New Y toner detected
Limit value Engine msec (Fixed value) ---
Total dots Controller 0 to 2,147,483,647 --- 4096dots (EEPROM initialization)
K Toner Dispense time Engine 0 to 99,999,999 msec During printing New K toner detected
Limit value Engine msec (Fixed value) ---
Total dots Controller 0 to 2,147,483,647 --- 4096dots (EEPROM initialization)
C Toner Change 4K toner Controller 0 to 255 Times When replaced C Toner (EEPROM initialization)
1.5K toner Controller 0 to 255 Times When replaced C Toner (EEPROM initialization)
M Toner Change 4K toner Controller 0 to 255 Times When replaced M Toner (EEPROM initialization)
1.5K toner Controller 0 to 255 Times When replaced M Toner (EEPROM initialization)
Y Toner Change 4K toner Controller 0 to 255 Times When replaced Y Toner (EEPROM initialization)
1.5K toner Controller 0 to 255 Times When replaced Y Toner (EEPROM initialization)
K Toner Change 4K toner Controller 0 to 255 Times When replaced K Toner (EEPROM initialization)
1.5K toner Controller 0 to 255 Times When replaced K Toner (EEPROM initialization)
Photoconductor Engine 0 to 99,999,999 During printing New photoconductor
Rotation
When replaced detected
Times
Photoconductor Change Controller 0 to 255 Photo conductor (EEPROM initialization)
Fuser Engine 0 to 99,999,999 Pages During printing Counter clear
Fuser Change Controller 0 to 255 Times Counter clear (EEPROM initialization)
Fuser Change (Pages at the time of Controller 0 to 99,999,999 Pages Counter clear (EEPROM initialization)
replacing the pervious one)

MAINTENANCE Sheet for Servicing 502

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Table 6-3. List of information managed and methods of management

Count processing
Information name and storage Range Unit Count conditions Clear conditions
location
2nd BTR Engine 0 to pages During printing Counter clear
2nd BTR Change Controller 0 to 255 Times Counter clear (EEPROM initialization)
Development Unit
C Development Engine 0 to 13,631,488 msec During printing Counter clear
M Development Engine 0 to 13,631,488 msec During printing Counter clear
Y Development Engine 0 to 13,631,488 msec During printing Counter clear
K Development Engine 0 to 13,631,488 msec During printing Counter clear
C Deve Change Controller 0 to 255 Times Counter clear (EEPROM initialization)
M Deve Change Controller 0 to 255 Times Counter clear (EEPROM initialization)
Y Deve Change Controller 0 to 255 Times Counter clear (EEPROM initialization)
K Deve Change Controller 0 to 255 Times Counter clear (EEPROM initialization)
2nd BTR Offset
Normal Engine 0 to 15 --- (Setting value) (Setting)
SemiThk Engine 0 to 15 --- (Setting value) (Setting)
Thick Engine 0 to 15 --- (Setting value) (Setting)
ExtraThk Engine 0 to 15 --- (Setting value) (Setting)
Card Engine 0 to 15 --- (Setting value) (Setting)
Envelope Engine 0 to 15 --- (Setting value) (Setting)
Power On (Times power is turned on) Controller 0 to 99,999,999 Times When the power is (EEPROM initialization)
turned on
Sleep (Number of recoveries from Controller 0 to 99,999,999 Times When returning from (EEPROM initialization)
standby) standby
MCU Engine --- --- (Fixed value) None
Duplex Engine --- --- (Fixed value) None
Panel Message 1 --- --- When an error occurs
Controller
Error Code 1 --- --- When an error occurs
Controller
Error Page 1 --- --- When an error occurs
Controller SelecType, (EEPROM
Jam Code 1 --- --- When an error occurs
Controller initialization)
Page Size 1 --- --- When an error occurs
Controller
Paper Type 1 --- --- When an error occurs
Controller
Date, Time 1 --- --- When an error occurs

MAINTENANCE Sheet for Servicing 503

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6.4.2 Print Log Report

6.4.2.1 Print Log Report Items
† S/N : Serial number of main unit
† Date : yyyy/mm/dd hh:mm (Local time)
Not displayed when it is in asynchronous state.
† Toner Remain
„ C Toner : Remaining amount of C toner [%]
„ M Toner : Remaining amount of M toner [%]
„ Y Toner : Remaining amount of Y toner [%]
„ K Toner : Remaining amount of K toner [%]
† Print of papers [pages] : Number of printed pages by paper size.
„ Total : Number of printed pages.
„ Mono Simplex : Monochrome Number of printed pages by one-
side printing.
Duplex : Number of printed pages by
duplex printing.
„ Color Simplex : Color (process color) Number of printed pages by one-
side printing.
: Number of printed pages by
duplex printing.
„ Dummy : Number of duplex pages not actually printed.
Paper sizes not supported for duplex printing are
displayed as “---”.
† Print of mode : Number of printed pages by print mode.
† Coverage Duty[%] : Percentage of printed dots in total dots per page of each
color. It is avaraged each time one page is printed.
† Dots/1%[dots] : Number of dots when 1% of each toner is used.
Updated with every reduction of 1%.
† Estimate [pages] : Estimated number of pages that can be print with
remained toner. The estimate is made based on the
Figure 6-4. Print Log Report
“Coverage Duty [%]” and “Dots/1%[dots]”.

MAINTENANCE Sheet for Servicing 504

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6.4.2.2 List of information managed and methods of management

Table 6-4. List of information managed and methods of management

Count processing and
Information name Range Unit Count conditions Clear conditions
storage location
Serial Number Controller xxxxxxxxxx --- --- None
Date, Time Controller --- --- --- At Power on
C Toner Engine 0 to 100 % During printing New C toner detected
M Toner Engine 0 to 100 % During printing New M toner detected
Y Toner Engine 0 to 100 % During printing New Y toner detected
K Toner Engine 0 to 100 % During printing New K toner detected
Print [pages]
Total Controller 0 to 99,999,999 pages During printing (EEPROM initialization)
Mono Simplex Controller 0 to 99,999,999 pages During printing (EEPROM initialization)
Mono Duplex Controller 0 to 99,999,999 pages During printing (EEPROM initialization)
Color Simplex Controller 0 to 99,999,999 pages During printing (EEPROM initialization)
Color Duplex Controller 0 to 99,999,999 pages During printing (EEPROM initialization)
Dummy Controller 0 to 99,999,999 pages During printing (EEPROM initialization)
Coverage Duty[%] C,M,Y,K Controller 0 to 100.0 % During printing (EEPROM initialization)
Dots/1%[dots] C,M,Y,K Controller 0 to 2,147,483,647 dots During printing (EEPROM initialization)
Estiamte[pages] Controller 0 to 99,999,999 pages During printing (EEPROM initialization)
Note *1 Values in parentheses in the Clear Condition column are cleared as a result.
*2 If a value exceeds its range, it is not guaranteed if it is controlled by the controller.

MAINTENANCE Sheet for Servicing 505

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6.5 Consumables and Components needing Periodic Replacement

C A U T IO N The print page-based service life values of the Consumables and Periodical Replacement Parts are guidelines. The number of printable pages varies
depending on how they are printed. The number of printable pages decreases depending on the intermittent printing (where a few pages, one to several
pages, are printed each time), paper size, paper orientation, thick paper printing, printed document, frequent power-on/off, etc. Hence, the number of
printable pages of the consumables and periodical replacement parts may become less than a half depending on the operating conditions and environment
of the user.

6.5.1 Consumables
Table 6-5. Information on Consumables
Part Name Part Code Life (Pages) Service life indication Remarks
Standard capacity 0191 1,500 There are two types of toner cartridge: standard cartridge with a life of
Y Replace Toner C 1,500 pages, and a high-capacity cartridge with a life of 4,000 pages.
High capacity 0187 4,000
(1,500 pages by the K toner is the figure for the packaged cartridge
Standard capacity 0192 1,500 only.)
M Replace Toner M
High capacity 0188 4,000
Toner Cartridge
Standard capacity 0193 1,500
C Replace Toner Y
High capacity 0189 4,000
Standard capacity --- ---
K Replace Toner K
High capacity 0190 4,000
Photoconductor Unit 1104 14,000 Replace Photocondctr ---

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6.5.2 Regular Replacement Parts

Table 6-6. Maintenance Information on Regular Replacement Parts
Part to be replaced at
Part Name Part Code Life (Pages) Service life indication Remedy after Replacement Remarks
the same time
While it can still be printed, it is desirable to
replace the unit. If printing is continued, the
Execute “Reset Fuser Counter” in the FUSER UNIT breaks down for the last time
FUSER ASSY 2090471 100,000 Worn Fuser 2ND BTR ASSY maintenance mode to reset the life and the following troubles may be occurred.
counter. *1 • Fusing defect
• Stain of the back side
• Paper jam in the fusing section

K 1292991 100,000 Worn K Dev Unit PIVOT AD Execute “Reset X DvlpCounter” (X=Y,
M, C, K) in the maintenance mode to † While it can still be printed, it is
Y 1292994 Worn Y Dev Unit PIVOT AD reset the life counter.
HOUSING ASSY- desirable to replace the unit.
After executing the counter reset, open
DEVE 66,700 Worn M Dev Unit † The “PIVOT AD” is packed with the
M 1292996 PIVOT AD and close the cover A. Do not turn the
printer off until the engine completely ASP “HOUSING ASSY-DEVE”.
C 1292999 Worn C Dev Unit PIVOT AD stops.
Execute “Reset 2ndBTRCounter” in the
maintenance mode to reset the life
counter.
While it can still be printed, it is desirable to
2ND BTR ASSY 1292981 100,000 --- FUSER ASSY After executing the counter reset, open
replace the unit.
and close the cover A. Do not turn the
printer off until the engine completely
stops.
*1:The same function is also available in the reset menu.

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6.6 Glueing/Lubrication
This section explains the part required glueing and lubrication when performing the service work, or replacing the unit or parts.

6.6.1 Glueing
There is no relevant glueing part for this unit.

MAINTENANCE Glueing/Lubrication 508

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6.6.2 Lubrication
The part requires lubrication for this unit is as below

Parts Name CHUTE ASSY FSR

Spring attached on the [CHUTE ASSY FSR]
Lubrication Part

Types of oil Parts Name : GREASE G76

applied Parts Number : 1304691
Amount of
About 5mm
lublicate
Lubrication is required when CHUTE ASSY FSR and FRAME ASSY
Note 2ND are replaced at the same time. When replacing only one of them,
lubrication is not necessary as the grease is remaining on the other one.

FRAME ASSY 2ND

CHUTE ASSY FSR

Lubrication Part

MAINTENANCE Glueing/Lubrication 509

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 CHAPTER

7
APPENDIX

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 EPSON AcuLaser C1100 Revision B

7.1 Connectors Table 7-1. IOT

P/J Location Remarks
This section shows the connector locations of EPSON AcuLaser C1100. [P] and [J] Connects SENSOR TNER FULL and HARNESS ASSY TNER
126 F-138
represent “plug” and “jack”, respectively. FULL
128 G-153 Connects FUSER LOCK SWITCH and HARNESS ASSY MAIN
7.1.1 The List of Plugs and Jacks 200 H-153 Connects MOT ASSY P/R and HARNESS ASSY MAIN
201 G-153 Connects MOT ASSY P/R and HARNESS ASSY MAIN
IOT
202 F-124 Connects CLUTCH ASSY PRE REGI and HARNESS ASSY P/H2
Table 7-1. IOT
203 F-122 Connects CLUTCH ASSY REGI and HARNESS ASSY P/H2
P/J Location Remarks 204 C-109 For connection inside of MOT ASSY ROT
1 G-156 Connects PWBA FUSER CONT and HARNESS ASSY MAIN
400 I-149 Connects PWBA MCU and FFC-ASSY ESS
2 G-156 Connects PWBA FUSER CONT and HARNESS ASSY AC
401 I-149 Connects PWBA MCU and FFC-ASSY LV/MCU
3 G-157 Connects PWBA FUSER CONT and HARNESS ASSY MCU C/L
403 H-148 Connects PWBA MCU and HARNESS ASSY MAIN
100 F-122 Connects SWITCH-P/H DOOR and HARNESS ASSY P/H2
404 H-148 Connects PWBA MCU and MOT ASSY FSR
101 G-123 Connects SENSOR OHP and HARNESS ASSY P/H2
405 H-148 Connects PWBA MCU and MOT ASSY MAG
102 F-123 Connects SENSOR REGI and HARNESS ASSY P/H2
406 H-149 Connects PWBA MCU and MOT ASSY MAG
103 D-124 Connects SENSOR PAPER EMPTY and HARNESS ASSY P/H1
407 H-149 Connects PWBA MCU and HARNESS ASSY MAIN
104 H-110 Connects SENSOR HUM&TEMP and HARNESS ASSY MAIN
408 H-148 Connects PWBA MCU and HARNESS ASSY P/H1
Connects SENSOR ROTARY HOME POSI and HARNESS ASSY
105 D-108 409 H-148 Connects PWBA MCU and HARNESS ASSY P/H1
MAIN
410 I-148 Connects PWBA MCU and HARNESS ASSY MAIN
106 H-108 Connects ANTENNA CTRG and HARNESS ASSY MAIN
411 I-148 Connects PWBA MCU and DRIVE ASSY PRO
107 D-107 Connects SENSOR IBT RETRACT and HARNESS ASSY MAIN
412 I-148 Connects PWBA MCU and HARNESS ASSY MAIN
108 D-106 Connects SENSOR TR-0 and HARNESS-ASSY XERO
413 I-148 Connects PWBA MCU and HARNESS ASSY MAIN
109 D-106 Connects ANTENNA ASSY and HARNESS-ASSY XERO
414 I-147 Connects PWBA MCU and DRIVE ASSY PRO
111 G-137 Connects SENSOR FUSER IN and HARNESS ASSY 2BTR SENS
415 J-147 Connects PWBA MCU and HARNESS-ASSY MAIN
112 H-137 Connects SENSOR 2BTR RETRUCT and HARNESS ASSY ADC
416 J-147 Connects PWBA MCU and HARNESS-ASSY XERO
Connects SWITCH 2BTR COVER and HARNESS ASSY 2BTR
113 H-136 417 I-147 Connects PWBA MCU and HARNESS ASSY MCU C/L
SW
114 D-104 Connects SWITCH -INLK FUSER and HARNESS ASSY MAIN 418 I-147 Connects PWBA MCU and HARNESS ASSY ADC
115 G-107 Connects SWITCH-INLK FRONT and HARNESS ASSY MAIN 420 J-148 Connects PWBA MCU and HARNESS ASSY MAIN
116 G-108 Connects SWITCH ASSY TOP and HARNESS ASSY MAIN 421 J-148 Connects PWBA MCU and HARNESS ASSY MAIN
117 D-105 Connects SWITCH-INLK FUSER and HARNESS ASSY MAIN 422 I-147 Connects PWBA MCU and HARNESS ASSY ADC
125 G-108 Connects SWITCH-FRONT DOOR and HARNESS ASSY MAIN 429 D-109 Connects PWBA CRUM and HARNESS ASSY MAIN

APPENDIX Connectors 511

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 EPSON AcuLaser C1100 Revision B

Table 7-1. IOT Table 7-1. IOT

P/J Location Remarks P/J Location Remarks
430 E-109 Connects PWB ASSY ROT and HARNESS ASSY MAIN Connects HARNESS ASSY 2BTR SENS and HARNESS ASSY
620 H-137
431 F-138 Connects SENSOR ASSY ADC and HARNESS ASSY ADC ADC

432 D-109 Connects PWB ASSY ROT and HARNESS ASSY MAIN 621 I-136 Connects HARNESS ASSY 2BTR SW and HARNESS ASSY ADC

433 D-109 Connects PWB ASSY ROT and PWB ASSY MOT CN1 B-106 Connects OP PANEL and HARNESS ASSY PANEL

500 H-153 Connects LV/HVPS and FFC-ASSY LV/MCU CN405 G-155 Connects PWBA ESS and HARNESS ASSY PANEL

501 I-152 Connects LV/HVPS and HARNESS ASSY MAIN CN501 G-156 Connects PWBA ESS and HARNESS ASSY MAIN

502 I-153 Connects LV/HVPS and HARNESS ASSY MAIN CN502 G-155 Connects PWBA ESS and HARNESS ASSY MAIN

503 I-155 Connects LV/HVPS and HARNESS ASSY AC CN601 G-155 Connects PWBA ESS and FFC-ASSY ESS

504 H-154 Connects LV/HVPS and WIRE ASSY BTR T2 I-107 Connects PLATE BIAS-2ND ASSY and WIRE ASSY 2BTR

505 F-109 Connects LV/HVPS and WIRE ASSY 2BTR T4 H-107 Connects GUIDE CRU ASSY AD and WIRE ASSY DTN

506 E-109 Connects PWBA HVPS and WIRE ASSY IBT

507 E-109 Connects PWBA HVPS and WIRE ASSY DTN
508 H-155 Connects LV/HVPS and WIRE ASSY BCR DUP
509 H-156 Connects LV/HVPS and WIRE ASSY DEVE Table 7-2. DUP
510 I-108 Connects HOLDER ASSY BIAS and WIRE ASSY DEVE P/J Location Remarks
512 I-107 Connects GUIDE CRU ASSY AD and WIRE ASSY BTR 122 G-207 Connects SWITCH-DUP DOOR and HARNESS-ASSY DUP1
513 H-107 Connects GUIDE CRU ASSY AD and WIRE ASSY IBT 123 E-209 Connects SENSOR LOW PASS and HARNESS-ASSY DUP2
514 I-108 Connects GUIDE CRU ASSY AD and WIRE ASSY BCR 124 F-205 Connects SENSOR UPPER PASS and HARNESS-ASSY DUP1
515 H-153 Connects LV/HVPS and HARNESS ASSY MAIN 442 H-209 Connects SENSOR UPPER PASS and MOTOR ASSY DUP
516 F-110 Connects PWBA HVPS and HARNESS ASSY MAIN 443 G-209 Connects PWBA DUP-L and HARNESS-ASSY DUP2
600 F-153 Connects MOT ASSY MICRO and HARNESS ASSY MAIN 444 H-208 Connects PWBA DUP-L and HARNESS-ASSY DUP1
601 H-138 Connects ROS ASSY and HARNESS ASSY MAIN 607 B-209 Connects HARNESS ASSY MAIN and HARNESS-ASSY DUP2
602 H-138 Connects ROS ASSY and HARNESS ASSY MAIN 611 D-204 Connects SOLENOID ASSY DUP and HARNESS-ASSY DUP1
603 F-124 Connects HARNESS ASSY P/H1 and HARNESS ASSY P/H2 612 G-206 Connects MOTOR ASSY DUP INV and HARNESS-ASSY DUP1
604 F-124 Connects MOTOR-PH and HARNESS ASSY P/H1
605 E-124 Connects SOLENOID PICK UP and HARNESS ASSY P/H1
607 E-140 Connects HARNESS ASSY MAIN and HARNESS ASSY DUP2
614 E-105 Connects FUSER ASSY and HARNESS ASSY MCU C/L
Connects HARNESS-ASSY TNER FULL and HARNESS ASSY
617 D-140
MAIN

APPENDIX Connectors 512

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 EPSON AcuLaser C1100 Revision B

500 FEEDER 7.1.2 P/J Layout Diagram

Table 7-3. 500 FEEDER
P/J Location Remarks A B C D E F G H I J K L

119 E-307 Connects SENSOR NO PAPER and HARNESS ASSY FEED3

101
120 D-307 Connects SENSOR T/R (P120) and HARNESS ASSY FEED3
Connects SWITCH FEEDER DOOR and HARNESS-ASSY FEED 102
121 C-308 109 108 117 114 614 125 115 T4 (IBT)
MAIN
435 E-309 Connects PWBA TRAY 500 and HARNESS-ASSY FEED1 103

436 E-309 Connects PWBA TRAY 500 and HARNESS-ASSY FEED2

437 E-309 Connects PWBA TRAY 500 and HARNESS-ASSY FEED MAIN 104
107
440 E-308 Connects PWBA MOT and HARNESS-ASSY FEED MAIN
105
446 D-308 Connects PWBA MOT and MOTOR ASSY FEEDER
T2
608 D-307 Connects HARNESS ASSY MAIN and HARNESS-ASSY FEED1 CN1 (2BTR)
106
Connects CLUTCH ASSY FEED and HARNESS-ASSY FEED 512
609 C-309
MAIN (1BTR)
107
610 C-308 Connects SOLENOID FEED and HARNESS-ASSY FEED MAIN 513
(IBT)
Connects HARNESS ASSY FEED MAIN and HARNESS ASSY
618 D-307 108
FEED3 514
105 (BCR)
4358 D-309 Not Connects
109 510
(DEVE)
204
110 106

429
111

112

113
433 432 430 507 506 516 505 104 116

114

115

Leg_Sec04_001EA

Figure 7-1. IOT P/J Layout Diagram (1)

APPENDIX Connectors 513

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 EPSON AcuLaser C1100 Revision B

A B C D E F G H I J K L A B C D E F G H I J K L

116 131

117 132
100
126 431 111 620 112 113
118 133

119 134

120 135

121 136
621
203

122 137
102
602

123 101 138

601

124 202 139

125 140

126 141

127 142

128 143
103 605 603 604 617 607

129 144

130 145

Leg_Sec04_002EA Leg_Sec04_003EB

Figure 7-2. IOT P/J Layout Diagram (2) Figure 7-3. IOT P/J Layout Diagram (3)

APPENDIX Connectors 514

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 EPSON AcuLaser C1100 Revision B

A B C D E F G H I J K L A B C D E F G H I J K L

146 201
417 418 422 414 416

147 415 202

404 412 611 124 612
403 421
148 405 420 203
409 411
406 413
149 204

408 407 410 400 401

150 205
200

151 500 206

201
502
122
607
152 501 207

515
444
153 208
600
504
154 209 443
128
503
155 210

156 211
CN502 508
509
157 212
CN601 608

158 CN405 213

123 442

159 CN501 1 2 3 214

160 215

Leg_Sec04_004EA Leg_Sec04_005EA

Figure 7-4. IOT P/J Layout Diagram (4) Figure 7-5. DUP P/J Layout Diagram

APPENDIX Connectors 515

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 EPSON AcuLaser C1100 Revision B

A B C D E F G H I J K L

301

302

303

304
121 608 618 120 119 446 440

305

306

307

308

309

310

311

609 610 4358 436 435 437

312

313

314

315

Leg_Sec04_006EA
Figure 7-6. 500 FEEDER P/J Layout Diagram

APPENDIX Connectors 516

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 EPSON AcuLaser C1100 Revision B

7.2 Wiring Connection Diagrams Table 7-4. List of the Marks

Name of signal line Remarks

7.2.1 Marks used in the Overall Wiring Connection Diagram

The table below shows how to interpret the Overall Wiring Connection Diagrams.
Indicates a functional component in a part, and its name.
Table 7-4. List of the Marks
Name of signal line Remarks
Indicates a connection between parts by harness, wire, etc.

Indicates a connection that differs according to the specification.

Indicates a section in “7.3 Wiring Connection Diagram
between Parts” (p519), and the section No.
Indicates a connection between parts by conductive materials
such as a leaf spring.

Indicates a connection between parts by tightening of screws. Indicates the screw for fastening conductive materials such as
leaf springs to harnesses.

Indicates Frame Ground.

Indicates conductive materials such as leaf spring.

Indicates a connector, and the connector No.

Indicates a connection terminal with an on-board leaf spring,

etc., and the connector (terminal) No.

Indicates a connector attached directly to the board, and the

connector No.

Box with a part name in it indicates the part.

APPENDIX Wiring Connection Diagrams 517

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 APPENDIX
PWBA MCU ROS ASSY
PL12.2.1 PL8.1.1
9-1
P/J407 P/J601
MOT ASSY FSR
P/J404 4 PWBA ESS
PL11.1.3
PL12.2.7

P/J400 CN601

EPSON AcuLaser C1100

FUSER ASSY
P/J614 P/J417
PL10.1.1 10 LV/HVPS
CN502 P/J602
PL12.2.3
P/J410 P/J502
FUSER LOCK SWITCH
1 OP PANEL
PL10.1.6
P/J501 CN501 PL1.1.17
P/J128 P/J128
CN405 CN1
SWITCH-INLK
P/J115 FRONT P/J115
PL1.1.27 6 PWBA HVPS
SWITCH-INLK SWITCH PL12.1.9
FUSER P/J114 P/J403 P/J116 ASSY TOP P/J116 P/J515 P/J516
PL1.1.34 PL1.1.7
P/J504 P/J507
5 SWITCH-INLK
P/J201 P/J117 FUSER P/J117 P/J509 P/J505
MOT ASSY P/R PL1.1.34
PL11.1.6
P/J200 P/J401 P/J500 P/J508 P/J506

P/J503

Downloaded from www.Manualslib.com manuals search engine

9-2
P/J411 PWBA FUSER
DRIVE ASSY PRO CONT
HOUSING ASSY-DEVE PL9.2.5
PL11.1.2 PL12.2.12
IBT ASSY PL7.1.1
P/J414
7.2.2 Overall Wiring Connection Diagrams
P/J1 P/J2 2ND BTR ASSY PL6.1.12
FUSER ASSY
PL10.1.1
P/J3 P/J614

P/J4

SENSOR TNER FULL

P/J126 P/J617 P/J413 3
PL7.1.24
PWBA TRAY 500
PL14.3.3
SENSOR
IBT RETRACT P/J107 P/J415
PL6.1.26 P/J436 J4358 N.C.
P/J421 P/J608 P/J435
SENSOR TR-0 P/J108 P/J416 PWBA MOT
PL7.1.2 PL14.3.4
MOTOR ASSY FEEDER
P/J437 P/J440 P/J446
ANTENNA ASSY PL14.3.9
P/J109
PL7.1.10

P/J609 CLUTCH ASSY FEED

7 PL14.3.12
SENSOR HUM & TEMP
P/J104
PL12.1.6 SWITCH FEEDER DOOR
P/J121
PL14.3.18
PWBA CRUM
P/J429 P/J412
PL12.1.11
SENSOR NO PAPER
P/J618 P/J119
P/J405 PL14.4.3
MOT ASSY MAG
PL11.1.4
P/J406 SENSOR T/R (P120)

Wiring Connection Diagrams

P/J120
PL14.4.7
SENSOR ROTARY
HOME POSI P/J105
P/J610 SOLENOID FEED
PL9.1.18
PL14.3.8
ANTENNA CTRG
P/J106
PL9.1.12

Figure 7-7. Overall Wiring Connection Diagrams

SWITCH-FRONT DOOR
P/J125 2
PL1.1.26 MOTOR-PH
PWB ASSY ROT P/J409 P/J604
PL5.2.20
PL12.1.10
MOT ASSY ROT
P/J204 P/J433 P/J430 SOLENOID PICK UP
PL11.1.5 P/J605
PL4.1.23

P/J432
CLUTCH ASSY PRE REGI
P/J408 P/J603 P/J202
PL5.2.22
8
SENSOR FUSER IN CLUTCH ASSY REGI
P/J111 P/J620 P/J418 P/J203
PL6.1.3 PL5.2.2
PWBA
SENSOR 2BTR SWITCH-PH DOOR DUP-L
P/J100 PL13.4.13
RETRACT P/J112 PL5.2.23
PL6.1.22 SWITCH-DUP DOOR
P/J444 P/J122
PL13.3.7
P/J101 SENSOR OHP
SWITCH 2BTR PL5.2.16
COVER P/J113 P/J621 SOLENOID ASSY DUP
PL6.1.18 P/J611
PL13.2.7
SENSOR REGI
P/J102
SENSOR ASSY ADC PL5.2.19
P/J431 P/J422 SENSOR UPPER PASS
PL6.1.20 P/J124
PL13.2.10
SENSOR PAPER EMPTY
P/J103
MOT ASSY MICRO PL4.1.24
P/J600 MOTOR ASSY DUP INV
PL11.1.7 P/J612
PL13.2.18
P/J420 P/J607 P/J443
11 SENSOR LOW PASS MOTOR ASSY DUP
P/J123 P/J442
PL13.3.11 PL13.4.14

Leg_Sec007_001FC
Revision B

518
 EPSON AcuLaser C1100 Revision B

7.3 Wiring Connection Diagram between Parts Table 7-5. List of the Marks
Name of signal line Remarks
Indicates the logical value (Low: L, High: H) of
7.3.1 Marks used in the Diagram and Instructions for Use the signal for enabling the function. The voltage is
REGI CLUTCH ON (L) +24VDC
The table below shows how to interpret the Wiring Connection Diagram between the value when the signal is High. The arrow
Parts. Commonly used marks and symbols are omitted here. indicates the direction of the signal.
Indicates the logical value (Low: L, High: H) of
Table 7-5. List of the Marks
EXIT PAPER SENSED (L)+3.3VDC the signal when the function is detected. The
Name of signal line Remarks voltage is the value when the signal is High. The
arrow indicates the direction of the signal.

Indicates a plug.
Indicates connection such as between wiring.

Indicates the DC voltage when the HNB MCU

Indicates a jack. I/L +24VDC
WITH CPU internal interlock switch is ON.
+5VDC
Indicates DC voltage.
+3.3VDC
P/JXX Indicates a Pin YY or Jack YY for the connector SG Indicates a Signal Ground.
YY PXX and JXX.
AG Indicates a Analog Ground.
RTN Indicates a Return.
PWBA HNB DRV
PL X.Y.Z Indicates a part.

Heater Indicates a functional component in a part, and its

name.

Control Indicates control inside of PWB, and a brief

outline of the control.

Indicates a connection between parts by a harness,

DEVE_A wire, etc., and its signal name/details. The arrow
indicates the direction of the signal.

APPENDIX Wiring Connection Diagram between Parts 519

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 EPSON AcuLaser C1100 Revision B

7.3.2 Composition of the Wiring Connection Diagram 3. FEEDER (500) (p524)

between Parts „ Connection between PWBA MCU and PWBA TRAY 500
The Overall Wiring Connection Diagram is divided into 11 sections as shown below to „ Connection between PWBA TRAY 500 and CLUTCH ASSY FEED
indicate the detailed connection between parts. „ Connection between PWBA TRAY 500 and SWITCH FEEDER
„ Connection between PWBA TRAY 500 and SENSOR NO PAPER
1. DC POWER SUPPLY (p522) „ Connection between PWBA TRAY 500 and SENSOR T/R
„ Connection between PWBA MCU and LV/HVPS „ Connection between PWBA TRAY 500 and SOLENOID FEED
„ Connection between LV/HVPS and PWBA FUSER CONTROL „ Connection between PWBA TRAY 500 and PWBA MOT
„ Connection between LV/HVPS and MOT ASSY P/R „ Connection between PWBA MOT and MOTOR ASSY FEEDER
„ Connection between LV/HVPS and PWB ASSY ROT 4. ROS (p525)
„ Connection between LV/HVPS and SWITCH-INLK FRONT „ Connection between PWBA MCU and ROS ASSY
„ Connection between SWITCH-INLK FRONT and SWITCH ASSY TOP „ Connection between ROS ASSY and PWBA ESS
„ Connection between SWITCH ASSY TOP and SWITCH-INLK FUSER
„ Connection between SWITCH-INLK FUSER and LV/HVPS 5. XEROGRAPHIC (p526)
„ Connection between PWBA MCU and DRIVE ASSY PRO
2. MSI REGI (p523) „ Connection between PWBA MCU and SENSOR TNER FULL
„ Connection between PWBA MCU and MOTOR-PH „ Connection between PWBA MCU and SENSOR IBT RETRACT
„ Connection between PWBA MCU and SOLENOID PICK UP „ Connection between PWBA MCU and SENSOR TR-0
„ Connection between PWBA MCU and CLUTCH ASSY PRE REGI „ Connection between PWBA MCU and ANTENNA ASSY
„ Connection between PWBA MCU and CLUTCH ASSY REGI „ Connection between PWBA MCU and MOT ASSY P/R
„ Connection between PWBA MCU and SWICH-PH DOOR „ Connection between LV/HVPS and MOT ASSY P/R
„ Connection between PWBA MCU and SENSOR OHP
„ Connection between PWBA MCU and SENSOR REGI 6. HIGH VOLTAGE (p527)
„ Connection between PWBA MCU and SENSOR PAPER EMPTY „ Connection between LV/HVPS and PWBA HVPS
„ Connection between LV/HVPS and HOUSING ASSY-DEVE, IBT ASSY,
2ND BTR ASSY
„ Connection between LV/HVPS and PWBA MCU

APPENDIX Wiring Connection Diagram between Parts 520

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 EPSON AcuLaser C1100 Revision B

7. DEVELOPER (p528) 10. CONTROLLER (p531)

„ Connection between PWBA MCU and SWITCH FRONT-DOOR „ Connection between PWBA MCU and PWBA ESS
„ Connection between PWBA MCU and SENSOR HUM & TEMP „ Connection between PWBA ESS and OP PANEL
„ Connection between PWBA MCU and PWBA CRUM „ Connection between PWBA ESS and LV/HVPS
„ Connection between PWBA MCU and MOT ASSY MAG
„ Connection between PWBA MCU and SENSOR ROTARY HOME POSI 11. DUPLEX (p532)
„ Connection between PWBA MCU and ANTENNA CTRG „ Connection between PWBA MCU and PWBA DUP-L
„ Connection between PWBA MCU and PWB ASSY ROT „ Connection between PWBA DUP-L and SENSOR LOW PASS
„ Connection between PWB ASSY ROT and MOT ASSY ROT „ Connection between PWBA DUP-L and SWITCH-DUP DOOR
„ Connection between PWB ASSY ROT and LV/HVPS „ Connection between PWBA DUP-L and SOLENOID ASSY DUP
„ Connection between PWBA DUP-L and SENSOR UPPER PASS
8. 2nd BTR (p529) „ Connection between PWBA DUP-L and MOTOR ASSY DUP INV
„ Connection between PWBA MCU and SENSOR FUSER IN „ Connection between PWBA DUP-L and MOTOR ASSY DUP
„ Connection between PWBA MCU and SENSOR 2BTR RETRACT
„ Connection between PWBA MCU and SWITCH 2BTR COVER
„ Connection between PWBA MCU and SENSOR ASSY ADC
„ Connection between PWBA MCU and MOT ASSY MICRO

9. FUSER (p530)
„ Connection between PWBA MCU and MOT ASSY FUSER
„ Connection between PWBA MCU and FUSER ASSY
„ Connection between PWBA MCU and SWITCH-FUSER DOOR
„ Connection between PWBA MCU and FUSER LOCK SWITCH
„ Connection between LV/HVPS and PWBA FUSER CONT
„ Connection between PWBA FUSER CONT and FUSER ASSY
„ Connection between PWBA FUSER CONT and PWBA MCU
„ Connection between PWBA FUSER CONT and FUSER LOCK SWITCH
„ Connection between LV/HVPS and PWBA MCU

APPENDIX Wiring Connection Diagram between Parts 521

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 EPSON AcuLaser C1100 Revision B

1. DC POWER SUPPLY
LV/HVPS PWBA MCU
PL12.2.3 P/J500 P/J401 PL12.2.1
† Overcurrent Protection Power 3
POWER SAVE
20
Save 4 19
All outputs (+24VDC, +5VDC, +3.3VDC) from LV/HVPS are stopped when
short-circuiting on the way to the earth or ground. Each output is restored by SWITCH- SWITCH
INLK ASSY
eliminating the cause of the short-circuit, and turning the printer OFF and then FRONT TOP
P/J502 P/J115 PL.1.1.27 P/J115 P/J116 PL.1.1.7 P/J116
back ON after a fixed time has elapsed. The overcurrent protection circuit is 13
+5VDC
13 13 13 13

actuated when a current exceeds 16A flows. SWITCH-

INLK
† Overvoltage Protection P/J117
FUSER
PL.1.1.34 P/J117
I/L +5VDC
All outputs from LV/HVPS are stopped when an overvoltage is detected.The +5VDC
15 31 31
PWBA MCU
operating voltages for overvoltage protection of each output are as follows: +5VDC PL12.2.1
P/J500 P/J401 Interlock
Supply I/L +5VDC
„ +24VDC:36VDC 5
P/J502
18
P/J410
+5VDC
+5VDC
+5VDC
3 3
„ +5VDC:7VDC 4
SG
4

„ +3.3VDC:5VDC +24VDC INTERLOCK

+24VDC
† Power save
+24VDC
Supply I/L +24VDC
5 5
I/L +24VDC
6 6

Name of signal line Remarks 7

SG
7
SG
8 8
POWER SAVE Signal for turning +24VDC OFF
+3.3VDC
+3.3VDC +3.3VDC
Supply +3.3VDC
1 1
SG
2 2
† Output stopped by Interlock Switch
MOT ASSY P/R
Name of signal line Remarks PL11.1.6
Interlock
P/J201
+24VDC
I/L +5VDC 9
I/L +24VDC
1
SG
10 2

„ The I/L +5VDC signal that arrives via Front Interlock Switch, Upper PWB ASSY
ROT
Interlock Switch and Fuser Interlock Switch becomes the power source of the P/J432
PL12.1.10
Interlock
I/L +24VDC
11 1
LV/HVPS internal Relay coil. This signal opens/closes Relay contacts, and 12
SG
3
+24VDC

controls INTERLOCK +24VDC and INTERLOCK +5VDC. PWBA FUSER CONTROL

PL12.2.12
P/J503 P/J2
3 3
1 1

Leg_Sec007_002FB

Figure 7-8. DC POWER SUPPLY Connection and Wiring Diagram

APPENDIX Wiring Connection Diagram between Parts 522

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 EPSON AcuLaser C1100 Revision B

2. MSI&REGI

PWBA MCU
Name of signal line Remarks PL12.2.1 P/J409 P/J604
MOTOR-PH
P/H MOT ON (H) +3.3VDC PL5.2.20
1 6 1
Paper detection signal for MSI generated by P/H MOT PWM +3.3VDC
PAPER EMPTY SENSED (H) +5VDC 2 5 2
Sensor Photo (No Paper Sensor) INTERLOCK 3
P/H MOT TG +3.3VDC
4 3
P/H MOT ON CW/CCW M
+24VDC 4 3 4
P/H MOTER ON (H)+3.3VDC 5
SG
2 5
I/L +24VDC
P/H MOTER PWM 6 1 6
P/H MOTOR drive control signal
P/H MOTER FG P/J409 P/J605
I/L +24VDC SOLENOID
7 2 1
P/H MOTER CW/CCW FEED SOL ON (L) +24VDC PICK UP
8 1 2 PL4.1.23
FEED SOL ON (L)+24VDC Solenoid Feed ON/OFF signal INTERLOCK
+24VDC P/J408 P/J603 P/J202
PRE REGI CL ON (L) +24VDC CLUTCH ASSY
PREREGI CL ON (L)+24VDC Pre-Regi Clutch ON/OFF signal 1
I/L +24VDC
12 1 2 1
PRE REGI
2 11 2 1 2 PL5.2.22
REGI CL ON (L)+24VDC Regi Clutch ON/OFF signal
P/J203
CHTE ASSY REATR open/close detection REGI CL ON (L) +24VDC CLUTCH ASSY
3 10 3 2 1
P/H DOOR SW OPEND (H)+3.3VDC I/L +24VDC REGI
signal generated by P/H Door Switch 4 9 4 1 2 PL5.2.2

OHP media detection signal generated by Sensor P/J100

OHP SENSED (H)+5VDC 5
SG
8 5 2 SWITCH-PH
Photo (OHP Sensor) P/H POOR SW OPENED (H) +3.3VDC DOOR
6 7 6 1 PL5.2.23
Paper detection signal at REGI section generated
REGI SENSED (H)+5VDC +5VDC P/J101
by Sensor Photo (REGI Sensor) 7
SG
6 7 3
OHP SENSED (H) +5VDC SENSOR OHP
8 5 8 2
+5VDC PL5.2.16
9 4 9 1

P/J102
PULL UP +5VDC
10 3 10 3
SG SENSOR REGI
11 2 11 2
+5VDC REGI SENSED (H) +5VDC PL5.2.19
12 1 12 1

P/J103
PULL UP +5VDC
13 3 SENSOR PAPER
SG
14 2 EMPTY
PAPER EMPTY SENSED (H) +5VDC PL4.1.24
15 1

Leg_Sec007_003FB

Figure 7-9. MSI&REGI Connection and Wiring Diagram

APPENDIX Wiring Connection Diagram between Parts 523

Downloaded from www.Manualslib.com manuals search engine

 EPSON AcuLaser C1100 Revision B

3. FEEDER (500)
PWBA MCU PWBA TRAY 500
Tray Interface
PL12.2.1 PL14.3.3
Connector INTERLOCK
+24VDC
P/J421 P/J608 P/J435 P/J436 J4358
TRAY +5VDC
N.C. 10 1 10 1 N.C. 1 10
SENSOR +5VDC
9 2 9 2 2 9
Name of signal line Remarks RXD
8 3 8 3 3 8
+5VDC TXD
TRAY SENSOR 7
SG
4 7 4 4 7
6 5 6 5 5 6 N.C.
RXD PWBA TRAY CONT. control signal 5
+5VDC
6 5 6 6 5
SG INTERLOCK
INTERLOCK 4 7 4 7 7 4
TXD +24VDC SG +24VDC
3 8 3 8 8 3
I/L +24VDC
FEED MOTOR ON (H)+ FEEDER MOTOR control signal 2
I/L +24VDC
9 2 9 9 2
1 10 1 10
FEED CL ON (L)+24VDC Feed Clutch ON/OFF signal
Rear Cover open/close detection signal generated PWBA TRAY
DOOR SW OPEND (H)+5VDC 500
PWBA MOT MOTOR ASSY
by Door Rear Cover Switch PL.14.3.3
PL14.3.4 FEEDER
PL14.3.9
Paper detection signal at Paper Tray generated by INTERLOCK P/J437
FEED MOT ON (H)
P/J440
INTERLOCK
P/J446
NO PAPER SENSED (H)+5VDC +24VDC 1 5 1
Sensor Photo (No Paper Sensor) 2 4
+24VDC
2
I/L +24VDC
4 2 3
Paper feed start detection signal generated by SG M
PAPER PASS SENSED (L)+5VDC 5 1 4
Sensor Photo (Paper Pass Sensor) 5
6
FEED SOL ON (L)+24VDC Solenoid Feed ON/OFF signal
INTERLOCK
+24VDC
P/J609
I/L +24VDC CLUTCH ASSY FEED
6 2 1
FEED CL ON (L) +24VDC PL14.3.12
7 1 2

P/J121
DOOR SW OPENED (H) +5VDC SWITCH FEEDER
8 2
+5VDC SG DOOR
9 1 PL14.3.18

P/J618 P/J119
PULL UP +5VDC
10 6 1 3
SG SENSOR NO PAPER
11 5 2 2
NO PAPER SENSED (H) +5VDC PL14.4.3
12 4 3 1
P/J120
PULL UP +5VDC
13 3 4 3
SG SENSOR T/R (P120)
14 2 5 2
PAPER PASS SENSED (L) +5VDC PL14.4.7
15 1 6 1

INTERLOCK
+24VDC
P/J610
I/L +24VDC SOLENOID FEED
16 2 1
FEED SOL ON (L) +24VDC PL14.3.8
17 1 2

Leg_Sec007_004FB

Figure 7-10. FEEDER (500) Connection and Wiring Diagram

APPENDIX Wiring Connection Diagram between Parts 524

Downloaded from www.Manualslib.com manuals search engine

 EPSON AcuLaser C1100 Revision B

4. ROS

Name of signal line Remarks

ESS DATA- PWBA ESS ROS ASSY
Image signal from Controller PL12.2.7 PL8.1.1
ESS DATA+
PWBA LD
MCU DATA- CN502
DATA-
P/J602 P/J427
Image signal from MCU 1
DATA+
2 1 2
MCU DATA+ 2 1 2 1

PCONT
LASER ON (L)+5VDC PWBA LD control signal in ROS ASSY PWBA MCU
Single
PL12.2.1 P/J407 P/J601 P/J424
DATA- Beam Laser
VREF 1 16 1 9 Diode
DATA+
2 15 2 8
SCANNER MOTOR ON (L)+5VDC 3
P CONT
14 3 7
PWBA Scanner control signal in ROS ASSY 4
LASER ON (L) +5VDC
13 4 6
SCANNER MOTOR CLOCK +5VDC
SG
5 12 5 5
VREF
SOS SENSED (L)+5VDC Reference signal for start of laser scanning +3.3VDC 6
SG
11 6 4
7 10 7 3
+5VDC
8 9 8 2
+3.3VDC
9 8 9 1

INTERLOCK
+24VDC SCANNER PWB
P/J425 SCANNER MOTOR
I/L +24VDC
10 7 10 5
SG
11 6 11 4
SCAN MOT ON(L) +5VDC M
12 5 12 3

SCAN MOT CLOCK

13 4 13 1

+5VDC SOS PWB

P/J426
SG
14 3 14 3
SOS SENSED (L) +5VDC
15 2 15 2
+5VDC
16 1 16 1

Leg_Sec007_005FB

Figure 7-11. ROS Connection and Wiring Diagram

APPENDIX Wiring Connection Diagram between Parts 525

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 EPSON AcuLaser C1100 Revision B

5. XEROGRAPHIC
PWBA MCU DRIVE ASSY PRO
PL12.2.1 PL11.1.2
P/J411 IBT BRUSH MOTOR
IBT BRUSH MOT ON
1
IBT BRUSH MOT PWM
2
IBT BRUSH MOT TG
3
Name of signal line Remarks INTERLOCK
+24VDC 4
IBT BRUSH MOT CW/CCW M
SG
5
IBT BRUSH MOT ON 6
I/L +24VDC

IBT BRUSH MOT PWM IBT CLEANER

IBT Brush Motor drive control signal RETRACT MOTOR
IBT BRUSH MOT TG INTERLOCK P/J414
IBT CLEN RET MOT ON
+24VDC 1
IBT BRUSH MOT CW/CCW 2
SG
M
I/L +24VDC
3
IBT CLEN RET MOT START
IBT CLEN RET MOT PWM IBT Cleaner Retract Motor drive control signal P/J413 P/J606
I/L +24VDC
8 2
IBT CLEN RET MOT TG 9
RETRACT SOL ON (L) +24VDC
1
N.C.

+5VDC P/J617 P/J126

Full toner detection signal generated by Sensor 10
SG
3 1 3
FULL TONER SENSED (H)+5VDC FULL TONER SENSED (H) +5VDC SENSOR
Photo (Sensor Toner Full) 11
PULL UP +5VDC
2 2 2 TNER FULL
12 1 3 1 PL7.1.24

IBT Cleaner retract detection signal generated by

IBT RETRACT SENSED (L)+5VDC P/J415 P/J107
Sensor Photo (IBT Retract Sensor) 3
PULL UP +5VDC
3 SENSOR
SG
4 2 IBT RETRACT
Belt position detection signal generated by 5
IBT RETRACT SENSED (L) +5VDC
1 PL6.1.26
TR0 SENSED (H)+5VDCS
Sensor Photo (TR0 Sensor) +5VDC
P/J416 P/J108
+5VDC
ANTENNA OUT 1
TRO SENSED (H) +5VDC
3
SENSOR TR-0
Crum XERO Antenna control signal 2
SG
2 PL7.1.2
ANTENNA IN 3 1

P/R MOT GAIN ANTENNA OUT

P/J109
4 2 ANTENNA
P/R MOT CLK 5
ANTENNA IN
1
ASSY
PL7.1.10
P/R MOT LD P/R Motor drive control signal P/J403 P/J200
MOT ASSY P/R
PL11.1.6
P/R MOT GAIN
P/R MOT FG 4
P/R MOT CLK
7
5 6
P/R MOT LD
P/R MOT ON (L)+ 6
P/R MOT FG
5
+5VDC 7 4 M
P/R MOT ON (L) +
8 3
+5VDC
9 2
SG
10 1

LV/HVPS
PL12.2.3
INTERLOCK INTERLOCK
+24VDC +24VDC
P/J502 P/J201
I/L +24VDC
9 1
SG
10 2

Leg_Sec007_006FC

Figure 7-12. XEROGRAPHIC Connection and Wiring Diagram

APPENDIX Wiring Connection Diagram between Parts 526

Downloaded from www.Manualslib.com manuals search engine

 EPSON AcuLaser C1100 Revision B

6. HIGH VOLTAGE
LV/HVPS PWBA MCU
12.2.3 P/J500 P/J401 PL12.2.1
1st BTR CONT
22 1
IBT CLEANER H/L
21 2
SG
20 3
SG
Name of signal line Remarks 19
BCR CONT
4
18 5
DE-TONER CONT
1st BTR CONT 1st BTR Bias voltage control signal 17
DEVE BIAS ON
6
16 7
IBT CLEANER H/L 1BT CLEANER Bias voltage control signal 15
DEVE BIAS CONT
8
14 9
IBT CLEANER ON
BCR CONT BCR Bias voltage control signal 13
1st BTR REV ON
10
12 11
2nd BTR REV ON
DE-TONER CONT DE-TONER Bias voltage control signal 11
1st BTR ON
12
10 13
2nd BTR ON
DEVE BIAS ON DEVE Bias ON/OFF signal 9
DEVE BIAS CLK
14
8 15
2nd BTR CONT
DEVE BIAS CONT DEVE Bias voltage control signal 7
BCR CLK
16
6 17

IBT CLEANER ON Belt Cleaning Brush Bias ON/OFF signal

1st BTR REV ON 1st BTR DC Bias control signal PWBA HVPS
PL12.1.9
INTERLOCK INTERLOCK
2nd BTR REV ON 2nd BTR DC Bias control signal +24VDC +24VDC
P/J515 P/J516
SG
1 9
1st BTR ON 1st BTR DC ON/OFF signal I/L +24VDC
2 8
CLEANER H/L
3 7
2nd BTR ON 2nd BTR DC ON/OFF signal DE-TONER CONT
4 6
5 5
DEVE BIAS CLK DEVE AC Bias cycle control signal 6
IBT CLEANER ON
4
2nd BTR REV ON
7 3
2nd BTR CONT 2nd BTR Bias voltage control signal 8
2nd BTR ON
2
2nd BTR CONT
9 1
BCR CLK BCR Bias cycle control signal P/J504 P/J507
1st BTR DE-TONER
D 1 1 H
P/J509 P/J505
DEVE
C 1 1 F
PHOTO
P/J508 CONDUCTOR P/J506
BCR
A 1 UNIT 1 G
PL7.1.1

2nd
BTR

2ND BTR
ASSY
PL6.1.12

HOUSING ASSY-DEVE
PL9.2.5

IBT CLEANER Leg_Sec007_007FB

Figure 7-13. HIGH VOLTAGE Connection and Wiring Diagram

APPENDIX Wiring Connection Diagram between Parts 527

Downloaded from www.Manualslib.com manuals search engine

 EPSON AcuLaser C1100 Revision B

7. DEVELOPER
PWBA SWITCH-FRONT
MCU DOOR
PL12.2.1 P/J415 P/J125 PL1.1.26
SG
10 2
FRONT DOOR OPENED (H) +3.3VDC
11 1

SENSOR HUM & TEMP

Name of signal line Remarks P/J413 P/J104 PL12.1.6
+5VDC TEMP.
1 4 +5VDC
MAG ROLL MOT ON 2
SG
3
HUMI.
3 2
MAG ROLL MOT PWM +5VDC
Magnet Roll Motor drive control signal 4 1
MAG ROLL MOT TG
PWBA CRUM
MAG ROLL MOT CW/CCW P/J412 P/J429
PL12.1.11
+5VDC
DATA
1 4
Temperature data (analog value) inside printer +5VDC
2
CLOCK
3
TEMP. +5VDC
measured by Sensor 3
SG
2
4 1
Humidity data (analog value) inside printer
HUMI.
measured by Sensor MOT ASSY MAG
PL11.1.4
Home position detection signal of Deve Rotary MAGNET
P/J405
HOME POSITION SENSED (H)+5VDC generated by Sensor Photo (Rotary Home 1
MAG ROLL MOT ON ROLL MOTOR
MAG ROLL MOT PWM
Position Sensor) 2
MAG ROLL MOT TG
Interlock 3
+24VDC MAG ROLL MOT CW/CCW M
ANTENNA OUT 4
SG
CRUME Cartridge Antenna control signal 5
ANTENNA IN 6
I/L +24VDC

SG P/J406
I/L +24VDC
1
DISP CLUTCH ON (L) +24VDC DISPENSE CLUTCH
HOLD +5VDC 2
PWBA Rotate Motor Control control signal
CLOCK P/J413 P/J105
PULL UP +5VDC
5 3
ON (H) +5VDC 6
SG
2
SENSOR ROTARY
HOME POSI
HOME POSITION SENSED (H) +5VDC PL9.1.18
7 1
DEVE ROT A,XA,B,XB Deve Rotate Motor excitation signal P/J415 P/J106
ANTENNA OUT
1 2 ANTENNA CTRG
DATA 2
ANTENNA IN
1 PL9.1.12
PWBA CRUM control signal
CLOCK PWB ASSY ROT
PL12.1.10
FRONT DOOR OPEN (H)+3.3VDC Front Door open/close detection signal P/J415
SG
P/J430
6 4 MOT
HOLD ASSY ROT
7 3
CLOCK Interlock PL11.1.5
8 2
ON (H) +5VDC +24VDC P/J433 P/J204
9 1 DEVE ROT A
1 1
I/L +24VDC
2 3
LV/HVPS DEVE ROT XA
3 5
PL12.2.3 DEVE ROT B M
Interlock 4 7
+24VDC I/L +24VDC
5 9
DEVE ROT XB
P/J502 P/J432 6 11
I/L +24VDC
11 1
SG
12 3

Leg_Sec007_008FB

Figure 7-14. DEVELOPER Connection and Wiring Diagram

APPENDIX Wiring Connection Diagram between Parts 528

Downloaded from www.Manualslib.com manuals search engine

 EPSON AcuLaser C1100 Revision B

8. 2ND BTR

Name of signal line Remarks

2nd BTR paper detection signal generated by
FUSER IN SENSED (L)+5VDC PWBA MCU
Sensor Photo (Fuser In Sensor) PL12.2.1 P/J418 P/J620 P/J111
+5VDC SG
1 3 1 3
2nd BTR retract detection signal generated by FUSER IN SENSED (L)+5VDC SENSOR
RETRACT SENSED (H)+5VDC +5VDC 2
+5VDC
2 2 2 FUSER IN
Sensor Photo (2nd BTR Retract Sensor) 3 1 3 1 PL6.1.3
P/J112
ADC SOL RELEASE ON (L)+24VDC Sensor ADC internal Solenoid ON/OFF signal 4
PULL UP +5VDC
3 SENSOR
SG 2BTR
5 2
ADC SOL NIP ON (L)+24VDC Sensor ADC internal Solenoid ON/OFF signal 6
RETRACT SENSED (H) +5VDC
1
RETRACT
PL6.1.22
SG
7
Lighting signal of LED for detection of Sensor COVER OPENED (H) +3.3VDC
ADC LED COLOR ON (L)+5VDC 8 SWITCH
ADC internal color toner patch 2BTR COVER
PL6.1.18
P/J621 P/J113
Lighting signal of LED for detection of Sensor 2 1 2
ADC LED BLACK ON (L)+5VDC
ADC internal black toner patch 1 2 1

Toner patch density data (analog value)

ADC SENSOR Interlock
measured by sensor +24VDC
SENSOR ASSY ADC
P/J422 P/J431 PL6.1.20
ADC SOL RELEASE ON (L) +24VDC
RETRACT MOT ON (H)+3.3VDC 1
I/L +24VDC
8
2nd BTR Retract Motor control signal 2 7
RETRACT MOT PWM 3
ADC SOL NIP ON (L ) +24VDC
6
SG
4 5
ADC LED COLOR ON (L) +5VDC
5 4
+5VDC ADC LED BLACK ON (L) +5VDC
6 3
ADC SENSOR
7 2
+5VDC
8 1

MOT ASSY MICRO

Interlock PL11.1.7
+24VDC P/J403 P/J600
RETRACT MOT ON (H) +3.3VDC
1 3 1
SG
2 2 2 M
I/L +24VDC
3 1 3

Leg_Sec007_009FB

Figure 7-15. 2nd BTR Connection and Wiring Diagram

APPENDIX Wiring Connection Diagram between Parts 529

Downloaded from www.Manualslib.com manuals search engine

 EPSON AcuLaser C1100 Revision B

9. FUSER
MOT ASSY FSR
PWBA MCU P/J404
FUSER MOT ON (H) +3.3VDC PL11.1.3
PL12.2.1 1
+5VDC FUSER MOT PWM
2
Interlock FUSER MOT TG
3
+24VDC +5VDC M
4
SG
Name of signal line Remarks 5
I/L +24VDC
6
FUSER MOT ON (H)+3.3VDC
FUSER ASSY
FUSER MOT PWM PL10.1.1
Fuser Motor drive control signal
FUSER MOT TG P/J417 P/J614 P/J615
RL
1 12 2 2 1 Safety Temp.
FUSER MOT CW/CCW 2
SG
11 3 1 2 Sensor
SG
3 P/J616
Temperature data (analog value) of Heat Roll 4
Vc
10 4 3 1
Vd
RL surface temperature measured by Temp. Sensor 5 9 5 2 2 Temp. Sensor
+5VDC 8 6 1 3
for high-temperature detection P/J619 P/J110
PULL UP +5VDC
6 7 7 3 1 3
Temperature data (analog value) measured by 7
SG
6 8 2 2 2
VC FUSER EXIT SENSED (L) +5VDC
Temp. Sensor for temperature control 8 5 9 1 3 1
FUSER EXIT
Temperature data (analog value) measured by SENSOR
VD
Temp. Sensor for temperature control
Paper ejection detection signal generated by
FUSER EXIT SENSED (L)+5VDC P/J403 P/J114
Sensor Photo (Fuser Exit Sensor) 11
SG
2 SWITCH-FUSER
FUSER DOOR SW OPENED (H) +3.3VDC DOOR
12 1 PL1.1.36
DATA LV/HVPS
Crum control signal PL12.2.3
P/J503
CLOCK P/J401 P/J500 4
FRIKER CLK +3.3VDC
21 2 5
LAMP ON (L)
Flicker countermeasure control signal (AC220V/ 22 1 6
FLICKER CLK +3.3VDC
AC240V only)
220/240V
FUSER
LAMP ON (L)+ Fuser Lamp lighting signal RELAY PWBA FUSER CONT
P614 Thermostat
CONTROL PL12.2.12 3
P/J2
Fuser Lamp Relay ON/OFF signal in PWBA 4
2
RELAY ON (L)+24VDC 220/240V ONLY USE
5
Fuser Cont Heater

FUSER DOOR SW OPEND (H)+3.3VDC Cover Fuser open/close detection signal Interlock
+24VDC 6
100/115V
P/J410 P/J1
I/L +24VDC P/J3 P/J614 Thermostat
10 1
2 3
9 3
RELAY ON (L) +24VDC 1 1

FUSER LOCK Heater

SWITCH
PL10.1.6
1 2

Leg_Sec007_010FB

Figure 7-16. FUSER Connection and Wiring Diagram

APPENDIX Wiring Connection Diagram between Parts 530

Downloaded from www.Manualslib.com manuals search engine

 EPSON AcuLaser C1100 Revision B

10. CONTROLLER

PWBA ESS PWBA MCU

PL12.2.7 CN601 P/J400 PL12.2.1
1 16
2 15
3 14
4 13
5 12
6 11
7 10
8 9
9 8
10 7
11 6
12 5
13 4
14 3
15 2
16 1

LV/HVPS
PL12.2.3
+3.3VDC
CN501 P/J501
1 1
2 2
+5VDC
3 3
4 4
5 5
6 6

OP PANEL
PL1.1.17
CN405 CN1

Leg_Sec007_011FB

Figure 7-17. CONTROLLER Connection and Wiring Diagram

APPENDIX Wiring Connection Diagram between Parts 531

Downloaded from www.Manualslib.com manuals search engine

 EPSON AcuLaser C1100 Revision B

11. DUPLEX
PWBA MCU PWBA DUP-L
PL12.2.1 PL13.4.13
INTERLOCK P/J420 J607 P607 P/J443
SG INTERLOCK
+24VDC 1 12 1 12 +24VDC
SG
2 11 2 11
I/L +24VDC
3 10 3 10
I/L +24VDC
Name of signal line Remarks +5VDC 4 9 4 9
SG +5VDC
5 8 5 8
DUPLEX START 6
+5VDC
7 6 7
DUPLEX START
7 6 7 6
DUPLEX READY 8
DUPLEX READY
5 8 5
FUSER EXIT SENSOR
FUSER EXIT SENSOR 9
PRE REGI CLUTCH
4 9 4
PWBA DUP control signal 10
RXD
3 10 3
PRE REGI CLUTCH 11
TXD
2 11 2
12 1 12 1
TXD
RXD PWBA DUP-L
PL13.4.13
+5VDC
Paper detection signal for Transport section
LOW PASS SENSED (L)+5VDC P/J443
PULL UP +5VDC
P/J123
generated by Sensor Photo (Low Pass Sensor) 13
SG
3
14 2 SENSOR LOW PASS
LOW PASS SENSED (L) +5VDC PL13.3.11
Cover Dup open/close detection signal generated 15 1
DOOR SW OPEND (H)+5VDC
by Duplex Door Switch P/J444 P/J122
SG
1 2 SWITCH-DUP DOOR
GATE SOL PULL ON (L)+24VDC Gate Solenoid pull (one-side printing) signal 2
DOOR SW OPENED (H) +5VDC
1 PL13.3.7

GATE SOL PUSH ON (L)+24VDC Gate Solenoid push (duplex printing) signal
INTERLOCK
+24VDC P/J611
Paper detection signal for Invert section 3
PULL (L) +24VDC
3 1
UPPER PASS SENSED (L)+5VDC I/L +24VDC SOLENOID ASSY DUP
generated by Sensor Photo (Upper Pass Sensor) 4
PUSH (L) +24VDC
2 2 PL13.2.7
5 1 3
DUP UPPER A, XA, B, XB Upper roll Motor excitation signal
+5VDC
DUP LOWER A, XA, B, XB Lower roll Motor excitation signal
P/J124
PULL UP +5VDC
6 3
SG SENSOR UPPER PASS
7 2
UPPER PASS SENSED (L) +5VDC PL13.2.10
8 1

INTERLOCK
+24VDC
P/J612
I/L +24VDC
9 6 1
I/L +24VDC
10 5 2
DUP UPPER A
11 4 3 MOTOR ASSY DUP INV
DUP UPPER B M
12 3 4 PL13.2.18
DUP UPPER XA
13 2 5
DUP UPPER XB
14 1 6
INTERLOCK
+24VDC
P/J442
I/L +24VDC
1
I/L +24VDC
2
DUP LOWER A
3 MOTOR ASSY DUP
DUP LOWER B M
4 PL13.4.14
DUP LOWER XA
5
DUP LOWER XB
6
Leg_Sec007_012FB

Figure 7-18. DUPLEX Connection and Wiring Diagram

APPENDIX Wiring Connection Diagram between Parts 532

Downloaded from www.Manualslib.com manuals search engine

 EPSON AcuLaser C1100 Revision B

7.4 Unpacking the Printer † 500-Sheet Paper Cassette Unit

1) Main Unit

C A U T IO N „ Carrying the printer should be done by at least two people

keeping it in a horizontal position.
„ Since the rear side of the printer is heavier than its front side,
be aware of the difference when carrying the printer.
„ Use extreme care during the installation to avoid an accident
and injury.

After unpacking, make sure that there is no missing component, and check the
appearance.

Then remove all tapes and protection materials.

† Printer Main Unit
1) Main Unit
4) 2) Photoconductor Unit
3) Toner Cartridge (YMCK)
4) POWER CORD
5) User’s Guide
5)
† Duplex Print Unit
3) 1) Main Unit
2) COVER CONNECTOR
3) SCREW THUMB (2 pcs.)
2)

1)

APPENDIX Unpacking the Printer 533

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 EPSON AcuLaser C1100 Revision B

7.5 Parts List Table 7-6. MAIN UNIT

No. Part Name
MAIN UNIT 01-01-32 COVER DUP
01-01-33 COVER INNER L
Table 7-6. MAIN UNIT
01-01-34 SWITCH INLK FRONT
No. Part Name
01-01-36 EXIT CHUTE SWITCH
01-01-02 TRAY EXTENSION
01-01-99 KIT SLIDE BAR
01-01-03 COVER TOP
12-02-01 PWBA MCU
01-01-04 COVER HUSER
12-02-02 FFC-ASSY LV/MCU
01-01-05 COVER TOP SIDE L
12-02-03 LV/HVPS
01-01-06 COVER TOP SIDE R
12-02-04 HARNESS ASSY AC
01-01-07 SWITCH ASSY TOP
12-02-05 FFC-ASSY ESS
01-01-10 COVER CLEANER
12-02-07 “BOARD ASSY., MAIN”
01-01-100 “LOGO PLATE,13X54;C”
12-02-08 “BOARD ASSY.,MEMORY”
01-01-12 FOOT REAR
12-02-10 HARNESS ASSY MAIN
01-01-13 FOOT FRONT
12-02-12 PWBA FUSER CONT
01-01-14 COVER MSI
12-02-13 POWER CABLE
01-01-15 COVER FRONT-L
12-02-13 POWER CABLE
01-01-16 COVER FRONT ASSY-U
04-01-01 MSI ASSY
01-01-17 “CONTROL,PANEL”
04-01-02 ROLL ASSY MSI
01-01-18 HARNESS
04-01-08 ROLL MSI
01-01-19 COVER ASSY LH
04-01-09 CHUTE MSI
01-01-20 COVER LH
04-01-11 GEAR MANUAL
01-01-21 COVER ESS
04-01-12 GUIDE SIDE L
01-01-22 SWITCH ASSY FUSER
04-01-13 GUIDE ASSY SIDE R
01-01-23 COVER TRAY
04-01-15 PLATE BOTTOM ASSY MSI
01-01-24 COVER INNER TOP
04-01-16 HOLDER ASSY RETARD MSI
01-01-26 EXIT CHUTE SWITCH
04-01-17 PLATE ASSY RETARD
01-01-27 SWITCH INLK FRONT
04-01-20 OIL DAMPER
01-01-28 COVER ASSY RH
04-01-22 GEAR PICK UP

APPENDIX Parts List 534

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 EPSON AcuLaser C1100 Revision B

Table 7-6. MAIN UNIT Table 7-6. MAIN UNIT

No. Part Name No. Part Name
04-01-23 SOLENOID PICK UP 06-01-12 2ND BTR ASSY
04-01-24 SENSOR UPPER PASS 06-01-13 CAM ASSY-2ND
04-01-25 ACUTUATOR EMPTY 06-01-15 COVER ASSY-RR 2ND
04-01-26 HARNESS-ASSY P/H1 06-01-16 HARNESS ASSY 2BTR SW
05-01-01 COVER-PH 06-01-18 EXIT CHUTE SWITCH
05-01-02 CHUTE ASSY-REAR 06-01-20 SENSOR ASSY ADC
05-02-01 FRAME ASSY-PH 06-01-21 HOLDER-ADC 2ND
05-02-02 CLUTCH ASSY REGI 06-01-22 SENSOR UPPER PASS
05-02-06 GEAR-REGI 06-01-26 SENSOR UPPER PASS
05-02-08 ROLL REGI RUBBER 06-01-27 PLATE BIAS-2ND ASSY
05-02-11 VARISTOR 06-01-29 CAM ASSY-IBT CL
05-02-12 ROLL ASSY-PRE REGI 06-01-30 HARNESS ASSY ADC
05-02-16 SENSOR 07-01-02 SENSOR TR-0
05-02-17 SPRING-ACTUATOR 07-01-04 GUIDE CRU ASSY D
05-02-18 ACTUATOR-REGI 07-01-12 HARNESS ASSY XERO
05-02-19 SENSOR UPPER PASS 07-01-13 GUIDE CRU ASSY AD
05-02-20 MOTOR-PH 07-01-15 LEVER-LATCH PR
05-02-21 HARNESS ASSY P/H2 07-01-16 CAP-PLATE PR
05-02-22 CLUTCH ASSY REGI 07-01-20 BCR CLN XERO ASSY
05-02-23 EXIT CHUTE SWITCH 07-01-24 SENSOR TNER FULL
05-02-24 DRIVE ASSY PH 07-01-27 GUIDE CRU
05-02-25 COVER HARNESS 07-01-30 WIRE ASSY IBT
06-01-01 CHUTE ASSY-FSR 07-01-31 WIRE ASSY BTR
06-01-03 SENSOR 07-01-32 WIRE ASSY BCR
06-01-04 HARNESS ASSY 2BTR SENS 07-01-33 WIRE ASSY DTN
06-01-06 DIODE FUSER 08-01-01 ROS ASSY
06-01-07 FRAME ASSY-2ND 08-01-02 CLEANER ASSY
06-01-08 GEAR 27 08-01-05 CLEANER ASSY BASE

APPENDIX Parts List 535

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 EPSON AcuLaser C1100 Revision B

Table 7-6. MAIN UNIT Table 7-6. MAIN UNIT

No. Part Name No. Part Name
09-01-01 LATCH ASSY-ROTARY 12-01-10 PWB ASSY ROT
09-01-04 LEVER LATCH 12-01-11 PWBA CRUM
09-01-10 ANTENNA ASSY-CTRG NONFIG GREASE G76
09-01-15 LEVER CTRG SET
09-01-17 HOLDER ASSY-BIAS
09-01-18 SENSOR UPPER PASS
09-01-20 WIRE ASSY DEVE
09-02-05 HOUSING ASSY-DEVE K
09-02-06 HOUSING ASSY-DEVE Y
09-02-07 HOUSING ASSY-DEVE M
09-02-08 HOUSING ASSY-DEVE C
09-02-09 FRAME ASSY-ROTARY
09-02-10 PIVOT ASSY
09-02-11 PIVOT AD
09-02-13 BEARING BALL
10-01-01 FUSER ASSY
10-01-02 HARNESS ASSY MCU C/L
10-01-06 FUSER LOCK SWITCH
11-01-01 DRIVE ASSY BTR
11-01-02 DRIVE ASSY PRO
11-01-03 MOT ASSY FSR
11-01-04 MOT ASSY MAG
11-01-05 MOT ASSY ROT
11-01-06 MOT ASSY P/R
11-01-07 MOT ASSY MICRO
11-01-09 GEAR 2ND
12-01-06 SENSOR HUM & TEMP
12-01-09 PWBA HVPS

APPENDIX Parts List 536

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 EPSON AcuLaser C1100 Revision B

DUPLEX UNIT Table 7-7. DUPLEX UNIT

No. Part Name
Table 7-7. DUPLEX UNIT
01-03-10 SPRING ACTUATOR
No. Part Name 01-03-11 SENSOR UPPER PASS
01-01-02 COVER-R DUP 01-03-12 LATCH DUP L
01-01-03 COVER-L DUP
01-03-22 HARNESS-ASSY DUP 2
01-01-04 SCREW THUMB 01-03-23 COVER LOW DUP TRANS
01-01-06 COVER CONNECTOR
01-03-24 COVER-UP DUP TRANS
01-02-01 COVER INV
01-03-25 PAD DAMPER L
01-02-03 LINK-BUTTON 01-03-30 PAD DAMPER R
01-02-04 SPRING-LINK
01-03-99 KIT SUPPORT DUP
01-02-05 INVERTER ASSY DUP
01-04-01 ROLLER ASSY DUP
01-02-07 SOLENOID ASSY DUP 01-04-06 GEAR 30
01-02-08 SPRING ACTUATOR
01-04-07 GEAR 36
01-02-09 ACTUATOR INV
01-04-08 GEAR 40/42
01-02-10 SENSOR UPPER PASS 01-04-09 GEAR 48H
01-02-15 GEAR 20/21H
01-04-10 GEAR 30 OW
01-02-16 GEAR 30
01-04-13 PWBA DUP-L
01-02-17 GEAR 36 01-04-14 MOTOR ASSY DUP INV
01-02-18 MOTOR ASSY DUP INV
01-04-17 ROLLER ASSY DUP OUT
01-02-20 GEAR 48H
01-02-21 ROLLER ASSY INVERTER
01-02-22 CHUTE ASSY-INV LOW
01-02-23 ROLL PINCH DUP
01-02-28 HARNESS-ASSY DUP 1
01-02-29 ROLL ASSY PINCH DUP
01-03-01 TRANSPORT ASSY DUP
01-03-03 LATCH DUP R
01-03-07 EXIT CHUTE SWITCH
01-03-09 ACTUATOR INV

APPENDIX Parts List 537

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 EPSON AcuLaser C1100 Revision B

500-SHEET PAPER CASSETTE UNIT Table 7-8. 500-SHEET PAPER CASSETTE UNIT
No. Part Name
Table 7-8. 500-SHEET PAPER CASSETTE UNIT
01-03-23 CHUTE ASSY 500
No. Part Name 01-03-24 HOLDER ASSY RETARD 500
01-01-01 500 PAPER CASSETTE ASSY 01-03-26 FILM ASSY FDR
01-01-02 GUIDE END ASSY
01-03-29 LEVER 500
01-01-04 GUIDE PAPER L ASSY 500
01-03-32 GUIDE CST R
01-01-05 PINION 12 01-03-34 GUIDE CST L
01-01-06 GUIDE PAPER R ASSY 500
01-04-01 HOUSING ASSY FEED
01-01-09 LOCK LIFT R
01-04-03 SENSOR UPPER PASS
01-01-10 ROLL LINK 01-04-04 ACTUATOR NO PAPER CST
01-01-12 COVER FRONT CST 500
01-04-05 SPRING ACTUATOR
01-01-14 LOCK LIFT L
01-04-06 ACTUATOR T/R
01-02-01 COVER LEFT 500 01-04-07 SENSOR UPPER PASS
01-02-02 CHUTE FDR ASSY 500
01-04-11 ROLL ASSY FEED 500
01-02-10 COVER RIGHT 500
01-04-14 HARNESS ASSY FEED 3
01-03-02 HARNESS-ASSY FEED MAIN 01-04-15 CAP ACTUATOR
01-03-03 PWB TRAY 500
01-03-04 PWBA MOT
01-03-08 SOLENOID FEED
01-03-09 MOT ASSY FSR
01-03-10 GEAR ASSY DRIVE
01-03-11 GEAR FEED
01-03-12 CLUTCH ASSY FEED
01-03-14 HARNESS-ASSY FEED 1
01-03-16 ROLL ASSY TURN 500
01-03-18 EXIT CHUTE SWITCH
01-03-20 FOOT FEEDER
01-03-21 BLOCK CST
01-03-22 HARNESS-ASSY FEED 2

APPENDIX Parts List 538

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 EPSON AcuLaser C1100 Revision B

7.6 Exploded Diagrams

APPENDIX Exploded Diagrams 539

Downloaded from www.Manualslib.com manuals search engine

 C567-CASE-001
The parts to which no reference number
is assigned will not be available as
after-sale service parts.

01-01-04

01-01-02

01-01-19
01-01-03

01-01-21
01-01-23

01-01-20
01-01-24

01-01-07
01-01-22
01-01-05 01-01-06
01-01-36

01-01-34

01-01-26

01-01-27

01-01-33
01-01-18

A
01-01-17

01-01-12
01-01-12

01-01-16 01-01-13 01-01-13

01-01-32

01-01-100

01-01-15

01-01-99
01-01-10
A

01-01-28

01-01-14 Front Leg_Sec005_001EC

FOR EPSON AcuLaserC1100 NO.1-1 Rev.01 C567

Downloaded from www.Manualslib.com manuals search engine

 C567-ELEC-001 The parts to which no reference number
is assigned will not be available as
after-sale service parts.

12-02-01
12-02-02

Front A

12-02-03

12-02-04

A 12-02-05
B
12-02-07
12-02-08
C

12-02-12
12-02-09 (Only C567041)

12-02-13
12-02-10
C

Leg_Sec005_013EB

FOR EPSON AcuLaserC1100 NO.12-2 Rev.01 C567

Downloaded from www.Manualslib.com manuals search engine

 C567-MECH-001 The parts to which no reference number
is assigned will not be available as
after-sale service parts.

04-01-01 All this page including

04-01-09
04-01-02

04-01-08

04-01-15

04-01-11

04-01-12

04-01-13
A

04-01-26

04-01-24

04-01-25
04-01-16

04-01-23
04-01-17

04-01-20
04-01-22

Front
Leg_Sec005_002EB

FOR EPSON AcuLaserC1100 NO.4-1 Rev.01 C567

Downloaded from www.Manualslib.com manuals search engine

 C567-MECH-002 The parts to which no reference number
is assigned will not be available as
after-sale service parts.

05-01-01

05-01-02

[Ref PL5.2.1]

Front

Leg_Sec005_003EB

FOR EPSON AcuLaserC1100 NO.5-1 Rev.01 C567

Downloaded from www.Manualslib.com manuals search engine

 C567-MECH-003 The parts to which no reference number
is assigned will not be available as
after-sale service parts.

05-02-01 All this page including

05-02-02

05-02-06
05-02-24 05-02-23

05-02-08
B

05-02-06

05-02-25 05-02-22

05-02-11

D
05-02-19
05-02-18 05-02-17 05-02-16

B 05-02-20 E
A

E
05-02-21 C

05-02-12

Front Leg_Sec005_004EB

FOR EPSON AcuLaserC1100 NO.5-2 Rev.01 C567

Downloaded from www.Manualslib.com manuals search engine
 C567-MECH-004 The parts to which no reference number
is assigned will not be available as
after-sale service parts.

06-01-03 06-01-01

06-01-04

C
06-01-06
06-01-07

06-01-08

B
06-01-12
06-01-13

06-01-30
06-01-15
06-01-18

06-01-16

E C

06-01-20

D
06-01-26
06-01-21
06-01-22 06-01-27
A
E

06-01-29 Leg_Sec005_005EA
Front

FOR EPSON AcuLaserC1100 NO.6-1 Rev.01 C567

Downloaded from www.Manualslib.com manuals search engine

 C567-MECH-005 The parts to which no reference number
is assigned will not be available as
after-sale service parts.

07-01-04

C
07-01-02

07-01-13

07-01-15
07-01-16

C
07-01-12
B

B
07-01-33 D E A

D E F
07-01-31
07-01-30
F
07-01-20

07-01-24

07-01-32

07-01-27

07-01-27

Front Leg_Sec005_006EB

FOR EPSON AcuLaserC1100 NO.7-1 Rev.01 C567

Downloaded from www.Manualslib.com manuals search engine
 C567-MECH-006 The parts to which no reference number
is assigned will not be available as
after-sale service parts.

08-01-01

08-01-02

Front

08-01-05

Leg_Sec005_007EB

FOR EPSON AcuLaserC1100 NO.8-1 Rev.01 C567

Downloaded from www.Manualslib.com manuals search engine

 C567-MECH-007 The parts to which no reference number
is assigned will not be available as
after-sale service parts.

09-01-01

09-01-04
09-01-10

09-01-15

09-01-17

09-01-18

09-01-20

Front Leg_Sec005_008EB

FOR EPSON AcuLaserC1100 NO.9-1 Rev.01 C567

Downloaded from www.Manualslib.com manuals search engine

 C567-MECH-008 The parts to which no reference number
is assigned will not be available as
after-sale service parts.

09-02-05 (with 11)

09-02-10 09-02-10

09-02-11
09-02-11
09-02-09

09-02-08 (with 11) 09-02-06 (with 11)

09-02-13

09-02-13
09-02-10
09-02-10

09-02-11
09-02-11

09-02-07(with 11)

Front Leg_Sec005_009EB

FOR EPSON AcuLaserC1100 NO.9-2 Rev.01 C567

Downloaded from www.Manualslib.com manuals search engine

 C567-MECH-009 The parts to which no reference number
is assigned will not be available as
after-sale service parts.

10-01-01

10-01-02

10-01-06

Front Leg_Sec005_010EB

FOR EPSON AcuLaserC1100 NO.10-1 Rev.01 C567

Downloaded from www.Manualslib.com manuals search engine

 C567-MECH-010 The parts to which no reference number
is assigned will not be available as
after-sale service parts.

11-01-02

11-01-03

Front

11-01-09

11-01-01

11-01-04

11-01-05

11-01-06

11-01-07
Leg_Sec005_011EA

FOR EPSON AcuLaserC1100 NO.11-1 Rev.01 C567

Downloaded from www.Manualslib.com manuals search engine

 C567-MECH-011 The parts to which no reference number
is assigned will not be available as
after-sale service parts.

12-01-11

12-01-10

12-01-06

12-01-09

Front Leg_Sec005_012EB

FOR EPSON AcuLaserC1100 NO.12-1 Rev.01 C567

Downloaded from www.Manualslib.com manuals search engine

 C802-OPTI-049A The parts to which no reference number
is assigned will not be available as
after-sale service parts.

01-01-06

[Ref PL1.2.1]

Front

01-01-02

01-01-03

01-01-04 [Ref PL1.3.1]

01-01-04 Leg_Sec005_014EB

FOR DUPLEX UNIT NO.1-1 Rev.01

Downloaded from www.Manualslib.com manuals search engine
 C802-OPTI-050A The parts to which no reference number
is assigned will not be available as
after-sale service parts.

01-02-01

Front

01-02-05

01-02-07
01-02-08
01-02-09
01-02-04

A 01-02-10
01-02-03
B

01-02-15
01-02-16

A
01-02-17
01-02-18

01-02-20

01-02-28 01-02-21
C

01-02-23
01-02-29 01-02-22
01-02-29
01-02-23

Leg_Sec005_015EA

FOR DUPLEX UNIT NO.1-2 Rev.01

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 C802-OPTI-051A The parts to which no reference number
is assigned will not be available as
after-sale service parts.

01-03-01
Front
01-03-32

01-03-07

01-03-03 01-03-09
01-03-99 (with RING KL)
C 01-03-10
01-03-11

01-03-12
01-03-99 (with RING KL)
B

01-03-30 A
01-03-30
[Ref PL1.4]

01-03-25

01-03-25

01-03-22
C

01-03-23

01-03-24 Leg_Sec005_016EB

FOR DUPLEX UNIT NO.1-3 Rev.01

Downloaded from www.Manualslib.com manuals search engine
 C802-OPTI-052A The parts to which no reference number
is assigned will not be available as
after-sale service parts.

Front

01-04-01

01-04-06

01-04-07

01-04-07

01-04-08
01-04-09

01-04-13

01-04-08

01-04-07

01-04-07

01-04-14
01-04-10

01-04-17 Leg_Sec005_017EA

FOR DUPLEX UNIT NO.1-4 Rev.01

Downloaded from www.Manualslib.com manuals search engine

 C802-OPTI-053A The parts to which no reference number
is assigned will not be available as
after-sale service parts.
01-01-05 All this page including

01-01-02

01-01-04

01-01-05 01-01-06

01-01-10
01-01-14

01-01-10
01-01-09

01-01-12
Front Leg_Sec005_018EA

FOR 500-Sheet Paper Cassette Unit NO.1-1 Rev.01

Downloaded from www.Manualslib.com manuals search engine

 C802-OPTI-054A The parts to which no reference number
is assigned will not be available as
after-sale service parts.
01-02-02

01-02-01

01-02-10

[Ref PL1.3.1]

[Ref PL1.1.1]
Front Leg_Sec005_019EA

FOR 500-Sheet Paper Cassette Unit NO.1-2 Rev.01

Downloaded from www.Manualslib.com manuals search engine

 C802-OPTI-055A The parts to which no reference number
is assigned will not be available as
after-sale service parts.

01-03-12

01-03-08

01-03-09 01-03-10
D
E
01-03-11 01-03-14

01-03-16

01-03-18
F

C
01-03-04

D E
01-03-03
F
01-03-02
A
01-03-21
B
01-03-20

01-03-20
01-03-21 01-03-20
C 01-03-22
01-03-20 01-03-23

01-03-26
01-03-24

[Ref PL1.4.1]

01-03-29

01-03-34

Front B
01-03-32
Leg_Sec005_020EA

FOR 500-Sheet Paper Cassette Unit NO.1-3 Rev.01

Downloaded from www.Manualslib.com manuals search engine

 C802-OPTI-056A The parts to which no reference number
is assigned will not be available as
after-sale service parts.

01-04-01 All this page including

01-04-15

01-04-14

01-04-03

01-04-04

01-04-05

01-04-06
01-04-07

01-04-11

Front
Leg_Sec005_021EB

FOR 500-Sheet Paper Cassette Unit NO.1-4 Rev.01

Downloaded from www.Manualslib.com manuals search engine

 EPSON AcuLaser C1100 Revision B

7.7 Circuit Diagrams

† C567MAIN (Total: 4 pages)

APPENDIX Circuit Diagrams 561

Downloaded from www.Manualslib.com manuals search engine

 Model : AcuLaser C1100/LP-V500
Board : C567MAIN
Sheet : 1 of 4
Rev. : A

Downloaded from www.Manualslib.com manuals search engine

 Model : AcuLaser C1100/LP-V500
Board : C567MAIN
Sheet : 2 of 4
Rev. : A

Downloaded from www.Manualslib.com manuals search engine

 Model : AcuLaser C1100/LP-V500
Board : C567MAIN
Sheet : 3 of 4
Rev. : A

Downloaded from www.Manualslib.com manuals search engine

 Model : AcuLaser C1100/LP-V500
Board : C567MAIN
Sheet : 4 of 4
Rev. : A

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