Model Rev-P1/MF1

Machine Codes:
SFP: M290/M0AF
MFP: M291/M0AE

Field Service Manual

January, 2016
Important Safety Notices
Warnings, Cautions, Notes

In this manual, the following important symbols and notations are used.

• A Warning indicates a potentially hazardous situation. Failure to obey a Warning could result in
death or serious injury.

• A Caution indicates a potentially hazardous situation. Failure to obey a Caution could result in
minor or moderate injury or damage to the machine or other property.

• Obey these guidelines to avoid problems such as misfeeds, damage to originals, loss of valuable
data, and to prevent damage to the machine.

• This information provides tips and advice about how to best service the machine.

General Safety Instructions

For your safety, please read this manual carefully before you use this product. Keep this manual handy
for future reference.
Safety Information
Always obey the following safety precautions when using this product.
Safety During Operation
In this manual, the following important symbols and notations are used.

Switches and Symbols

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 Where symbols are used on or near switches on machines for Europe and other areas, the meaning of
each symbol conforms with IEC60417.

Responsibilities of the Customer Engineer

Customer Engineer

Replacement shall be done only by trained customer engineers who have completed service training for
the machine and all optional devices designed for use with the machine.

Reference Material for Maintenance

• Maintenance shall be done using the procedures prescribed for maintenance of the machine
described in the reference materials (service manuals, technical bulletins, operating instructions,
and safety guidelines for customer engineers).
• Use only consumable supplies and replacement parts designed for use with the machine.

Before Installation, Maintenance

Shipping and Moving the Machine

• Personnel moving or working around the machine should always wear proper clothing and
footwear. Never wear loose fitting clothing or accessories (neckties, loose sweaters, bracelets,
etc.) or casual footwear (slippers, sandals, etc.) when lifting or moving the machine.
• Always unplug the power cord from the power source before you move the machine. Before you
move the product, arrange the power cord so it will not fall under the machine.

Power

• Always disconnect the power plug before doing any replacement procedure. After switching off
the machine, power is still supplied to the main machine and other devices. To prevent electrical
shock, switch the machine off, wait for a few seconds, then unplug the machine from the power
source.
• Before you do any checks or adjustments after turning the machine off, work carefully to avoid
injury. After removing covers or opening the machine to do checks or adjustments, never touch
electrical components or moving parts (gears, timing belts, etc.).

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 • After turning the machine on with any cover removed, keep your hands away from electrical
components and moving parts. Never touch the cover of the fusing unit, gears, timing belts, etc.

Installation, Replacement, and Adjustments

• After installation, replacement, or adjustment, always check the operation of the machine to make
sure that it is operating normally. This ensures that all shipping materials, protective materials, wires
and tags, metal brackets, etc., removed for installation, have been removed and that no tools
remain inside the machine. This also ensures that all release interlock switches have been restored
to normal operation.
• Never use your fingers to check moving parts causing spurious noise. Never use your fingers to
lubricate moving parts while the machine is operating.

Special Tools

• Use only standard tools approved for machine maintenance.

• For special adjustments, use only the special tools and lubricants described in the service manual.
Using tools incorrectly, or using tools that could damage parts, could damage the machine or
cause injuries.

During Maintenance

General

• Before you begin a maintenance procedure: 1) Switch the machine off, 2) Disconnect the power
plug from the power source, 3) Allow the machine to cool for at least 10 minutes.
• Avoid touching the components inside the machine that are labeled as hot surfaces.

Safety Devices

• Never remove any safety device unless it requires replacement. Always replace safety devices
immediately.
• Never do any procedure that defeats the function of any safety device. Modification or removal of
a safety device (fuse, switch, etc.) could lead to a fire and personal injury. Always test the

3
 operation of the machine to ensure that it is operating normally and safely after removal and
replacement of any safety device.
• For replacements use only the correct fuses or circuit breakers rated for use with the machine. Using
replacement devices not designed for use with the machine could lead to a fire and personal
injuries.

Organic Cleaners

• During preventive maintenance, never use any organic cleaners (alcohol, etc.) other than those
described in the service manual.
• Make sure the room is well ventilated before using any organic cleaner. Use organic solvents in
small amounts to avoid breathing the fumes and becoming nauseous.
• Switch the machine off, unplug it, and allow it to cool before doing preventive maintenance. To
avoid fire or explosion, never use an organic cleaner near any part that generates heat.
• Wash your hands thoroughly after cleaning parts with an organic cleaner to prevent contamination
of food, drinks, etc. which could cause illness.
• Clean the floor completely after accidental spillage to prevent slippery surfaces that could cause
accidents leading to hand or leg injuries. Use dry rags to soak up spills.

Power Plug and Power Cord

• Before servicing the machine (especially when responding to a service call), always make sure that
the power plug has been inserted completely into the power source. A partially inserted plug could
lead to heat generation (due to a power surge caused by high resistance) and cause a fire or other
problems.
• Always check the power plug and make sure that it is free of dust and lint. Clean it if necessary. A
dirty plug can generate heat which could cause a fire.
• Inspect the length of the power cord for cuts or other damage. Replace the power cord if
necessary. A frayed or otherwise damaged power cord can cause a short circuit which could lead
to a fire or personal injury from electrical shock.
• Check the length of the power cord between the machine and power supply. Make sure the power
cord is not coiled or wrapped around any object such as a table leg. Coiling the power cord can
cause excessive heat to build up and could cause a fire.
• Make sure that the area around the power source is free of obstacles so the power cord can be
removed quickly in case of an emergency.
• Make sure that the power cord is grounded (earthed) at the power source with the ground wire on
the plug.

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 • Connect the power cord directly into the power source. Never use an extension cord.
• When you disconnect the power plug from the power source, always pull on the plug, not the
cable.

After Maintenance

Disposal of Used Items

• Never incinerate used toner, toner cartridges, or AIO units.

• Toner thrown into a fire can ignite or explode and cause serious injury. At the work site always
carefully wrap used toner and toner cartridges with plastic bags to avoid spillage before disposal
or removal.

• Always dispose of used items (developer, toner, toner cartridges, OPC drums, AIO units, etc.) in
accordance with the local laws and regulations regarding the disposal of such items.
• To protect the environment, never dispose of this product or any kind of waste from consumables at
a household waste collection point. Dispose of these items at one of our dealers or at an
authorized collection site.
• Return used drums to the service center for handling in accordance with company policy regarding
the recycling or disposal of such items.

Points to Confirm with Operators

At the end of installation or a service call, instruct the user about use of the machine. Emphasize the
following points.
• Show operators how to remove jammed paper and troubleshoot other minor problems by
following the procedures described in the operating instructions.
• Point out the parts inside the machine that they should never touch or attempt to remove.
• Confirm that operators know how to store and dispose of consumables.
• Make sure that all operators have access to an operating instruction manual for the machine.
• Confirm that operators have read and understand all the safety instructions described in the
operating instructions.
• Demonstrate how to turn off the power and disconnect the power plug (by pulling the plug, not the
cord) if any of the following events occur: 1) something has spilled into the product, 2) service or
repair of the product is necessary, 3) the product cover has been damaged.

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 • Caution operators about removing paper fasteners around the machine. They should never allow
paper clips, staples, or any other small metallic objects to fall into the machine.

Special Safety Instructions for Toner

Accidental Physical Exposure

• Work carefully when removing paper jams or replacing toner bottles or cartridges to avoid spilling
toner on clothing or the hands.
• If toner is inhaled, immediately gargle with large amounts of cold water and move to a well
ventilated location. If there are signs of irritation or other problems, seek medical attention.
• If toner gets on the skin, wash immediately with soap and cold running water.
• If toner gets into the eyes, flush the eyes with cold running water or eye wash. If there are signs of
irritation or other problems, seek medical attention.
• If toner is swallowed, drink a large amount of cold water to dilute the ingested toner. If there are
signs of any problem, seek medical attention.
• If toner spills on clothing, wash the affected area immediately with soap and cold water. Never use
hot water! Hot water can cause toner to set and permanently stain fabric.

Handling and Storing Toner

• Toner, used toner, and developer are extremely flammable.

• Never store toner, developer, toner cartridges, or toner bottles (including empty toner bottles or
cartridges), or AIO units in a location where they will be exposed to high temperature or an open
flame.

• Do not use a vacuum cleaner to remove spilled toner (including used toner). Vacuumed toner may
cause a fire or explosion due to sparks or electrical contact inside the cleaner. However, it is
possible to use a cleaner designed to be dust explosion-proof. If toner is spilled over the floor,
sweep up spilled toner slowly and clean up any remaining toner with a wet cloth.

• Always store toner and developer supplies such as toner and developer packages, cartridges,
bottles (including used toner and empty bottles and cartridges) and AIO units out of the reach of
children.

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 • Always store fresh toner supplies or empty bottles or cartridges in a cool, dry location that is not
exposed to direct sunlight.

Toner Disposal

• Never attempt to incinerate toner, used toner, or empty toner containers (bottles or cartridges).
Burning toner can explode and scatter, causing serious burns.
• Always wrap used toner and empty toner bottles and cartridges in plastic bags to avoid spillage.
Follow the local laws and regulations regarding the disposal of such items.
• Dispose of used toner and toner cartridges at one of our dealers or at an authorized collection site.
Always dispose of used toner cartridges and toner bottles in accordance with the local laws and
regulations regarding the disposal of such items.

Safety Instructions for the Machine

Prevention of Physical Injury

1. Before disassembling or assembling parts of the machine and peripherals, make sure that the
machine and peripheral power cords are unplugged.
2. The plug should be near the machine and easily accessible.
3. Note that some components of the machine and the paper tray unit are supplied with electrical
voltage even if the main power switch is turned off.
4. If any adjustment or operation check has to be made with exterior covers off or open while the
main switch is turned on, keep hands away from electrified or mechanically driven components.
5. If the [Start] key is pressed before the machine completes the warm-up period (the [Start] key starts
blinking red and green), keep hands away from the mechanical and the electrical components,
because the machine starts making copies as soon as the warm-up period is completed.
6. The inside and the metal parts of the fusing unit become extremely hot while the machine is
operating. Be careful to avoid touching those components with your bare hands.
7. To prevent a fire or explosion, keep the machine away from flammable liquids, gases, and
aerosols.

Health Safety Conditions

1. If the machine has ozone filters, never operate the machine without the ozone filters installed.
Always replace the ozone filters with the specified types at the proper intervals.

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 2. To avoid possible accumulation of ozone in the work area, locate the machine in a large well
ventilated room that has an air turnover rate of more than 30m3/hr/person.
3. Toner and developer are non-toxic, but if you get either of them in your eyes by accident, it may
cause temporary eye discomfort. Try to remove with eye drops or flush with water as first aid. If
unsuccessful, get medical attention.

Observance of Electrical Safety Standards

1. The machine and its peripherals must be installed and maintained by a customer service
representative who has completed the training course on those models.
2. The NVRAM on the system control board has a lithium battery which can explode if replaced
incorrectly. Replace the NVRAM only with an identical one. The manufacturer recommends
replacing the entire NVRAM. Do not recharge or burn this battery. Used NVRAM must be handled
in accordance with local regulations.

Safety and Ecological Notes for Disposal

1. Never incinerate toner bottles or used toner. Toner dust may ignite suddenly when exposed to an
open flame.
2. Dispose of used toner, developer, and organic photoconductors in accordance with local
regulations. (These are non-toxic supplies.)
3. Dispose of replaced parts in accordance with local regulations.
4. When keeping used lithium batteries in order to dispose of them later, do not put more than 100
batteries per sealed box. Storing larger numbers or not sealing them apart may lead to chemical
reactions and heat build-up.

• The danger of explosion exists if a battery of this type is incorrectly replaced.

• Replace only with the same or an equivalent type recommended by the manufacturer. Discard
used batteries in accordance with the manufacturer's instructions.

Laser Safety

The Center for Devices and Radiological Health (CDRH) prohibits the repair of laser-based optical units
in the field. The optical housing unit can only be repaired in a factory or at a location with the requisite
equipment. The laser subsystem is replaceable in the field by a qualified Customer Engineer. The laser
chassis is not repairable in the field. Customer engineers are therefore directed to return all chassis and
laser subsystems to the factory or service depot when replacement of the optical subsystem is required.

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 • Use of controls, or adjustment, or performance of procedures other than those specified in this
manual may result in hazardous radiation exposure.
• Turn off the main switch before attempting any of the procedures in the Laser Unit section. Laser
beams can seriously damage your eyes.

RoHS Compliance

These machines are fully compliant with Chinese RoHS and contain no restricted materials such as lead,
mercury, cadmium, hexavalent chrome, polybrominated biphenyl, or polybrominated diphenyl ether.

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 Symbols, Abbreviations and Trademarks
Symbols and Abbreviations

Commonly Used Icons for Replacements and Adjustments

This manual uses several symbols and abbreviations. The meaning of those symbols and abbreviations
are as follows:

Clip ring

Screw

Connector

Clamp

E-ring

C-ring

Spring

Timing Belt

FFC

Paper Feed: SEF/LEF

The notations "SEF" and "LEF" describe the direction of paper feed. The arrows indicate the direction of
paper feed.

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In this manual "Main Scan" means "Horizontal" and "Sub Scan" means "Vertical", both relative to the
direction of paper feed.

Key Presses

Symbol What It Means

[Key] The names of machine keys and PC keyboard keys are enclosed in square brackets.

> A right angle bracket means to select a menu item in that order.
Example: [CE Tools] > [Adjust Other Settings] > [1] for Destination Code
This means that the operator select the CE Tools, followed by [Adjust Other Settings],
and then select [1] for Destination Code.

Trademarks

• Microsoft, and Windows are registered trademarks of Microsoft Corporation in the United States
and /or other countries.
• PostScript is a registered trademark of Adobe Systems, Incorporated.
• PCL is a registered trademark of Hewlett-Packard Company.
• Ethernet is a registered trademark of Xerox Corporation.
• Wi-Fi is a registered trademark of Wi-Fi Alliance.
• Other product names used herein are for identification purposes only and may be trademarks of
their respective companies. We disclaim any and all rights involved with those marks.

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 TABLE OF CONTENTS
Important Safety Notices................................................................................................................................... 1
Warnings, Cautions, Notes...........................................................................................................................1
General Safety Instructions............................................................................................................................1
Responsibilities of the Customer Engineer.................................................................................................... 2
Customer Engineer................................................................................................................................ 2
Reference Material for Maintenance...................................................................................................2
Before Installation, Maintenance..................................................................................................................2
Shipping and Moving the Machine..................................................................................................... 2
Power......................................................................................................................................................2
Installation, Replacement, and Adjustments........................................................................................ 3
Special Tools..........................................................................................................................................3
During Maintenance...................................................................................................................................... 3
General.................................................................................................................................................. 3
Safety Devices........................................................................................................................................3
Organic Cleaners.................................................................................................................................. 4
Power Plug and Power Cord................................................................................................................ 4
After Maintenance......................................................................................................................................... 5
Disposal of Used Items.......................................................................................................................... 5
Points to Confirm with Operators......................................................................................................... 5
Special Safety Instructions for Toner.............................................................................................................6
Accidental Physical Exposure............................................................................................................... 6
Handling and Storing Toner................................................................................................................. 6
Toner Disposal....................................................................................................................................... 7
Safety Instructions for the Machine...............................................................................................................7
Prevention of Physical Injury................................................................................................................. 7
Health Safety Conditions...................................................................................................................... 7
Observance of Electrical Safety Standards.........................................................................................8
Safety and Ecological Notes for Disposal...........................................................................................8
Laser Safety.....................................................................................................................................................8
RoHS Compliance..........................................................................................................................................9
Symbols, Abbreviations and Trademarks...................................................................................................... 10
Symbols and Abbreviations........................................................................................................................ 10
Commonly Used Icons for Replacements and Adjustments.............................................................10

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 Paper Feed: SEF/LEF.......................................................................................................................... 10
Key Presses.......................................................................................................................................... 11
Trademarks...................................................................................................................................................11
1. Product Information
Specifications....................................................................................................................................................17
Specifications of the Machine.....................................................................................................................17
Software Specifications............................................................................................................................... 17
New Product Information................................................................................................................................ 18
Series Comparison.......................................................................................................................................18
Machine Names and Host Interface................................................................................................. 18
Feature Summary................................................................................................................................ 18
Important Points to Remember............................................................................................................19
General Configuration................................................................................................................................ 19
Product Overview........................................................................................................................................ 20
Paper Path and Image Writing.......................................................................................................... 20
Drive Layout.........................................................................................................................................21
2. Installation and Preventive Maintenance
Installation and Preventive Maintenance....................................................................................................... 23
Installation.................................................................................................................................................... 23
Preventive Maintenance..............................................................................................................................23
3. Replacement and Adjustment
Before You Begin............................................................................................................................................. 25
Before You Begin......................................................................................................................................... 25
Special Tools................................................................................................................................................ 25
Printing the Configuration Page ................................................................................................................. 25
Exterior Covers................................................................................................................................................. 26
AIO............................................................................................................................................................... 26
Bottom Cover............................................................................................................................................... 26
Top Cover.....................................................................................................................................................28
SFP........................................................................................................................................................28
MFP...................................................................................................................................................... 30
Laser Unit.......................................................................................................................................................... 31
Laser Unit...................................................................................................................................................... 31

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 After Replacing the Laser Unit............................................................................................................ 31
Paper Feed........................................................................................................................................................32
Paper Feed Roller........................................................................................................................................ 32
Friction Pad...................................................................................................................................................33
Registration Roller........................................................................................................................................ 34
Image Transfer Roller...................................................................................................................................34
Paper Feed Clutch........................................................................................................................................36
Bottom Plate Lift Clutch................................................................................................................................ 36
Drive.................................................................................................................................................................. 38
Main Motor.................................................................................................................................................. 38
Fan.....................................................................................................................................................................41
Fan................................................................................................................................................................ 41
Fusing Unit.........................................................................................................................................................42
Fusing Unit.................................................................................................................................................... 42
Electrical Components..................................................................................................................................... 43
Main Board.................................................................................................................................................. 43
Main Board of SFP Models................................................................................................................43
Main Board of MFP Models.............................................................................................................. 44
Wi-Fi PCB (Wi-Fi Models Only)................................................................................................................. 45
PSU................................................................................................................................................................45
HVP............................................................................................................................................................... 46
Scanner............................................................................................................................................................. 48
Scanner Unit.................................................................................................................................................48
Scanner Open/Close Switch..................................................................................................................... 50
Sensors..............................................................................................................................................................51
Registration Sensor...................................................................................................................................... 51
Exit Sensor.................................................................................................................................................... 51
Thermistor..................................................................................................................................................... 51
Bottom Plate Position Sensor....................................................................................................................... 52
Paper Size Sensor........................................................................................................................................52
4. System Maintenance
Utilities............................................................................................................................................................... 55
Using CE Tools............................................................................................................................................. 55

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 Adjust Registration...............................................................................................................................55
Adjust Temperature............................................................................................................................. 56
Adjust Other Settings...........................................................................................................................57
Get Input Status................................................................................................................................... 59
Output Check...................................................................................................................................... 60
Data Upload........................................................................................................................................61
CIS Calibration....................................................................................................................................61
Firmware Update............................................................................................................................................. 62
5. Troubleshooting
Service Calls..................................................................................................................................................... 63
LED Indicators and Error Status.................................................................................................................. 63
Points to Note...................................................................................................................................... 63
Fatal SC Codes/Fusing Related Errors...................................................................................................... 64
Executing Fusing SC Reset..................................................................................................................64
SC Tables......................................................................................................................................................65
SC Table Key.......................................................................................................................................65
SC2xx: Polygon Motor Errors............................................................................................................ 66
SC4xx: Bias Leak................................................................................................................................ 68
SC5xx: Main Motor Errors, Fusing Errors......................................................................................... 69
SC6xx: Communication Errors...........................................................................................................74
SC10xx: Others.................................................................................................................................. 74
Image Problems................................................................................................................................................75
Overview...................................................................................................................................................... 75
Dark Lines in Halftone Areas.......................................................................................................................76
6. Energy Saving
Energy Save......................................................................................................................................................77
Energy Saving Modes................................................................................................................................. 77

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16
1. Product Information

Specifications
Specifications of the Machine

For details about machine specifications, see the user guide.

Software Specifications

For details about system requirements for drivers, see the user guide.
For details about system requirements for the Virtual Operation Panel, see the manual for the Virtual
Operation Panel.

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 1. Product Information

New Product Information

Series Comparison

Machine Names and Host Interface

Abbrev. Model No. Product Name Host Interface

M290-27/29 SP 150 USB2.0

SFP M0AF-17/27/2 USB2.0

SP 150w
9 Wi-Fi 802.11b/g/n

M291-27/29 SP 150SU USB2.0

MFP M0AE-17/27/2 USB2.0

SP 150SUw
9 Wi-Fi 802.11b/g/n

Comparison of SFP and MFP Models

Abbrev. PPM Print Scan Copy ADF Operation Panel

SFP 22 YES NO NO NO *1

MFP 22 YES YES YES NO *2

1 The SFP has two LEDs to indicate status and errors.

2 The MFP has a [Start] button, and two LEDs to indicate status and errors.

Feature Summary

Feature SFP MFP

Weight
For details, see the user guide.
Tray capacity

GDI driver Available Available

TWAIN driver Not Available Available

WIA driver Not Available Available

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 New Product Information

Feature SFP MFP

Virtual Operation Panel Available Available

Firmware update tool Available (English and Simplified Chinese)

CE Tools Available Available

Toner End Detection

• Toner Near End
A Toner Near End message is displayed on the Virtual Operation Panel. Printing can be
continued.
• Toner End
A Toner End message is displayed on the Virtual Operation Panel. Printing cannot be
continued until toner is replaced.
If Toner End is detected during printing, printing will continue until the end of that job.
• Waste Toner Full
A Waste Toner Full message is displayed on the Virtual Operation Panel. Printing cannot be
continued until the waste toner box is replaced.
If Waste Toner Full is detected during printing, printing will continue until the end of that job.

Important Points to Remember

• Virtual Operation Panel

Use the Virtual Operation Panel to configure settings, view the status, copy (MFP only), and scan
(MFP only). For details, see the manual for the Virtual Operation Panel.
• CE Tools
Use CE Tools for maintenance settings. For details about CE Tools, see page 55 "Using CE
Tools".
• AIO (All In One) Cartridge
• The AIO is replaced by the user. For more details, refer to the user guide.

General Configuration

For details about the machine configuration, see the user guide.

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 1. Product Information

Product Overview

Paper Path and Image Writing

No Name No Name

1 Lenses, Mirrors 9 Registration Sensor

2 Polygon Mirror 10 Drum

3 Paper Size Sensor 11 Image Transfer Roller

4 Paper Tray 12 Hot Roller

5 Bottom Plate Position Sensor 13 Pressure Roller

6 Paper Feed Roller 14 Paper Exit Roller

7 Registration Roller 15 Exit Sensor

8 Paper Transport Roller

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 New Product Information

Drive Layout

No Name No Name

1 Paper Feed Clutch 6 Drum (inside the AIO)

2 Main Motor 7 Paper Transport Roller

3 Paper Exit Roller 8 Paper Feed Roller

4 Pressure Roller 9 Bottom Plate Lift Clutch

5 Hot Roller

21
 1. Product Information

22
2. Installation and Preventive
Maintenance

Installation and Preventive Maintenance

This product can be installed and maintained by the user.

Installation

For details about the installation requirements and installation procedures, see the user guide.

Preventive Maintenance

For details about how to maintain the machine, see the user guide.

23
 2. Installation and Preventive Maintenance

24
3. Replacement and Adjustment

Before You Begin

Before You Begin

• Before you begin a maintenance procedure: 1) Switch the machine off, 2) Disconnect the power
plug from the power source, 3) Allow the machine to cool for at least 10 minutes.
• Avoid touching the components inside the machine that are labeled as hot surfaces.

Special Tools

There are no special tools required for disassembling the machine. However, you must have these items:
• Standard length hex screwdriver
• Stubby hex screwdriver
• Thin radio pliers

Printing the Configuration Page

To print the Configuration Page, press the Power button 3 times rapidly (within 1 second).

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 3. Replacement and Adjustment

Exterior Covers
AIO

1. Open the top cover.

2. Remove the AIO [A].

Bottom Cover

1. Open the top cover.

2. Remove the small cover [A]. ( x1)

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 Exterior Covers

3. Disconnect the connector. ( x1)

4. Turn the machine upside down.

5. Remove the small cover [A]. ( x1)

6. Remove the screws on the bottom cover. ( x6)

7. Remove the bottom cover.

The bottom cover has hooks on the inside. Gently loosen the cover from the hooks by using the tip
of a small screwdriver.

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 3. Replacement and Adjustment

• After removing the bottom cover, place a mat underneath the machine to prevent damage to the
HVP and PCB [A] when placing the machine with its bottom side down.

Top Cover

SFP

1. Open the top cover [A].

28
 Exterior Covers

2. Remove the guide rail [B]. ( x1)

3. Disconnect the laser unit [A] from the top cover. ( x5)

4. Remove the top cover [A].

29
 3. Replacement and Adjustment

5. Remove the paper feed guide [A].

MFP

The MFP does not have a top cover.

For details on how to remove the scanner unit, see page 48 "Scanner Unit".

30
 Laser Unit

Laser Unit
Laser Unit

For details on how to remove the laser unit, refer to page 26 "Bottom Cover", page 28 "Top Cover",
and page 43 "Electrical Components".

After Replacing the Laser Unit

After replacing the laser unit, check the position of the image area on the page, and adjust the
registration value if necessary.
The registration value can be adjusted using either one of the following:
• Virtual Operation Panel
• CE Tools

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 3. Replacement and Adjustment

Paper Feed
Paper Feed Roller

1. Remove the bottom cover. (page 26)

2. Remove the main motor. (page 38)
3. Remove the feed guide [A]. ( x 4)

4. Slide the paper feed roller [A] to the right and remove it. ( x 2, bushing x 2)

32
 Paper Feed

5. Release the hook and remove the paper feed roller [A] from the shaft.

Friction Pad

1. Remove the bottom cover. (page 26)

2. Remove the gear [A]. ( x 1)
3. Remove the friction pad unit [B]. ( x3)

4. Release the 2 hooks.

5. Remove the friction pad [A].

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 3. Replacement and Adjustment

Registration Roller

1. Remove the AIO. (page 26)

2. Push down the rear end of the bushing [A] on the right end of the registration roller [B] to
unlock the roller.
3. Remove the registration roller [B].

Image Transfer Roller

1. Remove the AIO. (page 26)

34
 Paper Feed

2. Remove the image transfer roller with the bushing [A].

3. Remove the gear x 1, bushing x 2, spring x 2 from the image transfer roller [A].

35
 3. Replacement and Adjustment

Paper Feed Clutch

1. Remove the bottom cover. (page 26)

2. Remove the main motor. (page 38)
3. Remove the gear [A].

4. Remove the paper feed clutch [A] and the gear [B]. ( x1)

Bottom Plate Lift Clutch

1. Remove the bottom cover. (page 26)

36
 Paper Feed

2. Disconnect the harness.

3. Remove the friction pad unit [A]. ( x3) Remove the bottom plate lift clutch [B]. ( x1)

37
 3. Replacement and Adjustment

Drive
Main Motor

1. Remove the bottom cover. (page 26)

2. Open the top cover.
3. Remove the gear [A]. ( x1)

Remember the position of the gear [A]. Put the gear back in the correct position after replacing the
motor.
4. Remove the gear [A]. Remove the bracket [B]. ( ×3)

Remember the position of the gear [A]. Put the gear back in the correct position after replacing the
motor.

38
 Drive

5. Remove the T-shaped stopper [A].

Remember the position of the T-shaped stopper [A]. Put the stopper back in the correct position
after replacing the motor.
6. Remove the bracket [A]. ( ×2, ×2)

39
 3. Replacement and Adjustment

7. Remove the main motor [A] with its bracket. ( ×3)

8. Remove the gears [A], [B], and [C]. ( ×1)

9. Remove the bracket [A] from the main motor [B]. ( ×3)

40
 Fan

Fan
Fan

1. Remove the bottom cover. (page 26)

2. Remove the Wi-Fi PCB (Wi-Fi models only). (page 45)
3. Remove the bracket [A] ( ×1).

4. Remove the fan [A]. ( ×1, ×1 ).

• When replacing the fan, make sure that the decal on the fan faces the outside.

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 3. Replacement and Adjustment

Fusing Unit
Fusing Unit

1. Remove the bottom cover. (page 26)

2. Remove the Wi-Fi PCB (Wi-Fi Models only). (page 45)
3. Remove the fan. (page 41)
4. Remove the PSU. (page 45)
5. Remove the main motor with its bracket. (page 38)
6. Disconnect the harness [A] on the PCB.

7. Remove the fusing unit [A]. ( x4)

42
 Electrical Components

Electrical Components
Main Board

• Do not throw away the transparent sheet covering the main board. This sheet protects the harness
from being scratched by the hooks on the inside of the bottom cover. After replacing the main
board, re-attach the sheet. If the adhesive is weak, reinforce with double-sided tape.
• Before replacing the main board, print the Configuration page by pressing the Power button 3
times rapidly.
• The EEPROM cannot be removed. Before replacing the main board, remember the machine’s
"PNP ID", "Destination Code", and "Serial No.". After replacing the main board, enter them
manually by using CE Tools. For details, refer to page 55 "Using CE Tools".

Main Board of SFP Models

1. Remove the bottom cover. (page 26)

2. Remove the main board [A]. ( ×4, ×13)

43
 3. Replacement and Adjustment

Main Board of MFP Models

1. Remove the bottom cover. (page 26)

2. Remove the main board [A]. ( x4, x14, x1)

44
 Electrical Components

Wi-Fi PCB (Wi-Fi Models Only)

1. Remove the bottom cover. (page 26)

2. Remove the Wi-Fi PCB [A]. ( x2, x1, hook x1)

PSU

1. Remove the bottom cover. (page 26)

2. Remove the bracket [A]. ( ×3)

45
 3. Replacement and Adjustment

3. Remove the PSU [A] with the bracket. ( ×3)

• When removing the PSU, keep the harness [B] away from the heat sink [C]. Otherwise, the
cover of the harness may melt because of the heat.

4. Remove the PSU [B] from the bracket [A]. ( x4)

HVP

1. Remove the bottom cover. (page 26)

46
 Electrical Components

2. Remove the HVP [A]. ( x4, x1)

47
 3. Replacement and Adjustment

Scanner RTB 4
This section was revised

Scanner Unit

1. Remove the AIO. (page 26)

2. Remove the bottom cover. (page 26)
3. Remove the main board. (page 43)
4. Release the guides of the paper feed tray [A].

5. Remove the paper feed guide [A].

48
 Scanner

• To remove the paper feed guide [A], release the right linkage first.
6. Remove the rear cover from the right-hand side [A].

7. Open the scanner unit [A] and remove the guide rail [B]. ( x1)

8. Remove the scanner unit [A].

9. Remove the laser unit from the scanner unit [A]. ( x4)

49
 3. Replacement and Adjustment

Scanner Open/Close Switch

1. Remove the bottom cover. (page 26)

2. Remove the sheet [A].
3. Remove the bracket [B]. ( x1)

4. Remove the scanner open/close switch [A]. ( x2)

50
 Sensors

Sensors
Registration Sensor

1. Remove the bottom cover. (page 26)

2. Remove the registration sensor [A]. ( x1)

Exit Sensor

1. Remove the fusing unit. (page 42)

2. Remove the exit sensor [A]. ( x1)

Thermistor

1. Remove the AIO. (page 26)

2. Remove the bottom cover. (page 26)

51
 3. Replacement and Adjustment

3. Remove the screw [A]. ( x1)

4. Remove the thermistor [A]. ( x1)

Bottom Plate Position Sensor

1. Remove the friction pad unit. (page 33)

2. Remove the bottom plate position sensor [A]. ( x1)

Paper Size Sensor

1. Remove the AIO. (page 26)

52
 Sensors

2. Remove the top cover. (page 28)

3. Remove the main board. (page 43)
4. Remove the bracket [A] on the feed guide. ( x2)

5. Remove the paper size sensor.

53
 3. Replacement and Adjustment

54
4. System Maintenance

Utilities
Using CE Tools

• Before using CE Tools, make sure that the PC is connected to the machine.
To start CE Tools, click on the CE Tools icon.
• To return to the default values, click [Set Default] on each screen.
• To update to the latest information, click [Refresh] on each screen.
• To apply the settings, click [Apply] on each screen.

Adjust Registration

55
 4. System Maintenance

No. Item Details Values

Adjust the leading edge registration.

• Plain Paper
-40 to 40 (0.1 mm steps)
• Thick Paper
1 Leading Edge
• Thin Paper

Adjust the leading edge registration.

-2 to 2 (1 mm steps)
• For User

Adjust the side to side registration.

-40 to 40 (0.1 mm steps)
• By Pass Tray
2 Side to Side
Adjust the side to side registration.
-6 to 6 (1 mm steps)
• For User

Adjust Temperature

56
 Utilities

No. Item Details Values

1 Plain Paper Adjust the fusing temperature 160 to 190 (1°C steps)
according to the paper type.
2 Thick Paper 167 to 197 (1°C steps)

3 Thin Paper 147 to 177 (1°C steps)

4 Recycled Paper 155 to 185 (1°C steps)

Adjust Other Settings

No. Item Details Values

1 Sub Scan Magnification Specify the sub scan magnification. -8 to 8 (0.1% steps)

2 Transfer Roller Bias Adjust the transfer roller bias. -10 to 10 (12 steps)

3 Image Density Adjust the image density. -3 to 3 (7 steps)

Specify the Plug and Play ID.

Normally, do not change the PNP
4 PNP ID ID. After replacing the main board, 0 to 255
return the PNP ID to its original
value.

57
 4. System Maintenance

No. Item Details Values

Specify the area where the machine

is sold and used.
This setting is important. It
determines the following:
• Default paper size. LT for NA,
and A4 for all other areas.

5 Destination Code • Units of measure: inches for NA, 0 to 255

and millimeters for all other areas.
• Fixed steps for reduction/
enlargement.
Normally, do not change the
destination code. After replacing the
main board, return the destination
code to its original value.

SC 559 is the error code for Fusing

Unit Third Jam Error (Fatal Error). 0: Off
6 SC 559 Detection
Specify whether to enable SC 559 1: On
detection.

Specify whether to use the plate 0: On

7 Plate Control Mode
control mode. 2: Off

Black lines a few millimeters thick

may appear on prints when the
machine is operated in a low 0: Off
8 Low Humidity Mode
humidity environment. Enabling this 1: On
mode may help to solve the
problem.

Specify whether to use the primary 0: Off

9 Primary Cooling Mode
cooling mode. 1: On

The serial number of the machine is

displayed.

10 Serial No. Normally, do not change the serial -

number. After replacing the main
board, return the serial number to its
original value.

58
 Utilities

No. Item Details Values

AC power unstable times are

11 AC Power Unstable Times 0 to 99999999
displayed.

The serial number of the engine is

displayed.

12 Serial No_Engine Normally, do not change the serial -

number. After replacing the main
board, return the serial number to its
original value.

The ROM version number is

13 Rom Ver -
displayed.

14 Total Counter (Engine) The total counter is displayed. 0 to 99999999

15 2nd Serial No. Do not change the 2nd Serial No. -

Get Input Status

Click [Refresh] to update the information.

The input status of the following items can be viewed.

59
 4. System Maintenance

Items Values

• Front Cover
• Main Motor Lock
• Polygon Motor Lock
• Fan Lock
• LD XDETP Check 0: Off
• LD Error 1: On
• HVP Error
• Fuser High Temp
• Register Sens.
• Exit Sens.

• Fuser Thermistor
0x00 to 0xFFFF
• Video Thermistor

• AIO ID Chip
0: Off
• AC Low Voltage
1: On
• Plate Sensor

Output Check

60
 Utilities

Select the following items from the Output Check Items list, and switch them on or off.

Items Values

• Main Motor
• Feed Clutch
• Plate Clutch
• Fan High Speed
• Fan Low Speed
• LD Heater On (LD1 & LD2)
On
• Fuser Heater
Off
• Charge Bias
• Develop Bias
• Trans Current
• Polygon Motor
• LD1 Heate On
• LD2 Heate On

• FusingSCReset 0: Execute

Data Upload

Do not use Data Upload settings.

CIS Calibration

Do not use CIS Calibration settings.

61
 4. System Maintenance

Firmware Update
For details on how to update the machine firmware, refer to the firmware update guide.

62
5. Troubleshooting

Service Calls
LED Indicators and Error Status

• For details about the LEDs indicators and status descriptions, refer to the user guide.
To find out the SC code, see the message area on the Status screen of the Virtual Operation Panel.

Status Screen

1. The device status indicate “Error”.

2. Error messages and SC codes are displayed in this area.

Points to Note

• All SC codes are logged.

• When an error occurs, turn the power OFF and then ON. This usually solves the problem.

63
 5. Troubleshooting

• Before deciding to replace electrical components (PCB/PSU/HVP), always check the harnesses to
make sure that the problem was not caused by a loose connection.
• Before deciding to replace a motor or a sensor, always check around the motor or sensor feelers to
make sure that there is no physical obstruction such as paper scraps or things that have fallen into
the machine (for example, paper clips or pins).

Fatal SC Codes/Fusing Related Errors

Fatal SC codes are related to problems that occur in the fusing unit. Fusing related errors require special
handling because there is a risk of fire.
• Once a fatal error occurs, the machine cannot be used until the problem has is solved.
• When SC 559 Detection is enabled, the machine will shut down after three consecutive fusing jam
errors. For safety, this setting should remain enabled.
• When a fatal error (fusing related SC code) occurs, the machine cannot be operated until the
service technician releases the error by selecting [On] for FusingSCReset.

• After solving the problem that caused the fatal SC code to be issued, the service technician must
execute [FusingSCReset] in order to recover full operation of the machine. Otherwise the machine
will continue to issue the same SC code even after the problem has been solved.

Executing Fusing SC Reset

1. After solving the problem, start CE Tools on the PC.

2. Click [Output Check].

64
 Service Calls

3. From the Output Check Items list, select [FusingSCReset].

4. Click [On].

SC Tables

SC Table Key

SC codes are assigned a level of severity (A, B, C, D) based on the table below. These letters appear in
the 3rd column of the SC tables below.

Level Definition/ Reset Procedure

A This is a fatal error.

The machine is disabled due to a problem in the fusing unit. The operator cannot
operate the machine.
• The machine requires immediate servicing by a service technician.
• After solving the problem, [FusingSCReset] must be executed to release the
machine for normal operation.

B Only the function that uses the defective unit is disabled. The SC code is shown in the
message on the Status Panel.
• Cycle the power OFF/ON.

65
 5. Troubleshooting

Level Definition/ Reset Procedure

C These SC codes are not shown. They are logged internally.

• Check the SC error log.

D The SC code is shown in the message on the Status Panel.

• Cycle the power OFF/ON.
• The SC code will be shown again if the error repeats.

• Before deciding to replace a PCB, disconnect the board connectors, and then connect them again.
This is to make sure that the problem was not caused by a bad or loose connection.

SC2xx: Polygon Motor Errors

Code Level Details

202 D Polygon Motor On Timeout Error

No lock signal was received within 10 sec. after the polygon motor was turned
on.

• The polygon motor driver I/F harness is loose, broken, or defective.

• The polygon motor is broken or defective.

• Cycle the power OFF/ON.

• Replace the I/F harness.
• Replace the polygon motor.
• Replace the laser unit.

66
 Service Calls

Code Level Details

203 D Polygon Motor Off Timeout Error

The lock signal did not go inactive within 20 sec. after the polygon motor was
turned off.

• The polygon motor I/F harness is loose, broken, or defective.

• The motor driver board is defective.
• The motor is defective.

• Cycle the power OFF/ON.

• Replace the I/F harness.
• Replace the polygon motor.
• Replace the laser unit.

Code Level Details

204 D Polygon Motor Lock Signal Error

Four samplings within 200 ms indicate that the polygon motor lock signal
remained inactive beyond the prescribed number of revolutions.

• The I/F harness between the motor and driver board is loose, broken, or
defective.
• The driver board is defective.
• The motor is defective.

• Cycle the power OFF/ON.

• Replace the I/F harness.
• Replace the polygon motor.
• Replace the laser unit.

67
 5. Troubleshooting

Code Level Details

220 D Beam Synchronization Error

The top cover is closed and locked, and the polygon motor is locked, but laser
synchronization could not be achieved within 400 ms.

• The I/F harness of the LDB is loose, broken, or defective.

• The polygon motor is locked.
• The angle of incidence of the laser beam and photo-detector is not correct.

• Cycle the power OFF/ON.

• Replace the I/F harness.
• Replace the polygon motor.
• Replace the laser unit.
• Replace the main board.

SC4xx: Bias Leak

Code Level Details

491 D Bias Leak

A bias leak has occurred for the drum charge, development charge, or transfer
charge.
PWM signals are sampled at 20 ms intervals. This SC is issued if 10 PWM
samplings within 200 ms are abnormal.

• The HVP harness is loose, broken, or defective.

• The HVP board is defective.
• The AIO terminal is defective.

• Cycle the power OFF/ON.

• Check all the harness connections of the HVP.
• Check the spring-loaded AIO terminal installation behind the HVP.
• Replace the HVP.

68
 Service Calls

SC5xx: Main Motor Errors, Fusing Errors

Code Level Details

501 D Plate Action Error

The status of the bottom plate position sensor does not change even though 2
secs or more have lapsed after the bottom plate lift clutch is turned ON.
This SC is displayed if the error is detected 3 times.

• The bottom plate lift clutch is loose or defective.

• The bottom plate position sensor is loose or defective.

• Cycle the power OFF/ON.

• Replace the bottom plate lift clutch.
• Replace the bottom plate position sensor.
• Replace any harnesses connected to the bottom plate lift clutch or bottom
plate position sensor.

Code Level Details

520 D Main Motor Error

• The machine failed to detect a lock signal within 550 ms after the main
motor was turned on.
• The machine failed to detect a lock release signal with 2 sec. after the main
motor was turned off.
• This SC is displayed if a lock signal cannot be detected for 8 consecutive
times.

• The AIO is defective.

• The main motor is defective.

• Cycle the power OFF/ON.

• Check the areas around motor and main drive train for any physical
obstruction such as paper scraps.
• Clean the main motor drive train.
• Replace the AIO.
• Replace the main motor.

69
 5. Troubleshooting

Code Level Details

530 D Main Fan Motor Error

When the fan motor is ON, a lock signal is sampled every 100 ms. If an incorrect
lock signal is detected 100 times (10 sec), the fan is not rotating properly.

• The fan is defective.

• The harness is loose, disconnected or defective.

• Cycle the power OFF/ON.

• Replace the fan.
• Check the harness.

Code Level Details

541 A Fuser Thermistor Error

No temperature was detected within 6 sec. after the machine was turned on
(temperature was less than 0°C).
This SC is displayed if no temperature was detected 10 times or more.

• The fusing unit thermistor is disconnected, broken, or not set correctly.

• The fusing lamp is disconnected, broken, or not set correctly.
• The fusing unit is defective.

• Check the fusing unit thermistor.

• Check the fusing lamp.
• Replace the fusing unit.
• After solving the problem, the service technician must execute
[FusingSCReset]. Otherwise, the machine will continue to issue this SC code
and cannot be operated. (page 64 "Executing Fusing SC Reset")

70
 Service Calls

Code Level Details

542 A Fusing Reload Temperature Error

After starting up or during operation, the reload (operating) temperature cannot

be reached.

• The fusing thermistor is deformed or out of position.

• The fusing lamp harness is loose, broken, or defective.
• The fusing unit is defective.
• The power voltage is not correct.

• Check the power voltage.

• Check the fusing unit thermistor.
• Check the fusing lamp.
• Replace the fusing unit.
• After solving the problem, the service technician must execute
[FusingSCReset]. Otherwise, the machine will continue to issue this SC code
and cannot be operated. (page 64 "Executing Fusing SC Reset")

Code Level Details

543 A High Temperature Error (Software)

The temperature inside the fusing unit exceeded 235°C for more than 0.5 sec.
This SC is displayed if the error is detected 10 times or more.
However, the machine does not check for this error during low power mode,
sleep mode, cover open, or when the fusing lamp relay is OFF due to
malfunctions.

• The PSU is defective (triac has short-circuited).

• The main board is defective.

• Replace the main board.

• After solving the problem, the service technician must execute
[FusingSCReset]. Otherwise, the machine will continue to issue this SC code
and cannot be operated. (page 64 "Executing Fusing SC Reset")

71
 5. Troubleshooting

Code Level Details

544 A High Temperature Error (Hardware)

The machine checks the CPU port at 50 ms intervals.

This SC is displayed if the CPU port was detected to be LOW for 4 consecutive
times.

• The PSU is defective (triac has short-circuited).

• The fusing unit is defective.
• The main board is defective.

• Replace the PSU.

• Replace the fusing unit.
• Replace the main board.
• After solving the problem, the service technician must execute
[FusingSCReset]. Otherwise, the machine will continue to issue this SC code
and cannot be operated. (page 64 "Executing Fusing SC Reset")

Code Level Details

545 A Fuser Full Heater Error

The heating element of the fusing lamp remained at full power for more than 7
sec. (100 V) or 9 sec. (200 V) after the reload temperature was detected.
The machine checks for this error during standby, energy save, after reload, or
when the fusing unit is not rotating.

• The thermistor is deformed or loose.

• The fusing lamp is damaged.
• The overheat prevention device is activated.

• Check the fusing thermistor.

• Check the fusing lamp.
• After solving the problem, the service technician must execute
[FusingSCReset]. Otherwise, the machine will continue to issue this SC code
and cannot be operated. (page 64 "Executing Fusing SC Reset")

72
 Service Calls

Code Level Details

547 D Motor Thermistor Error

After starting up, the temperature inside the machine is checked every 100ms. A
temperature of -30°C is detected for 4 sec., or 105°C is detected for 1 sec.

• Cycle the power OFF/ON.

• Check the connection or replace the thermistor.
• Replace the I/F harness.
• Replace the main board.

Code Level Details

559 A Fusing Unit Third Jam Error

The exit sensor failed to detect the leading edge of the paper within the
prescribed time and triggered a jam alert.
After this error has occurred three times, the machine will shut down
automatically. It cannot be re-started until the machine has been serviced by a
service technician.

• Check the paper transport path for any physical obstruction such as paper
scraps.
• Make sure the fusing unit has been installed correctly.
• After solving the problem, the service technician must execute
[FusingSCReset]. Otherwise, the machine will continue to issue this SC code
and cannot be operated. (page 64 "Executing Fusing SC Reset")

Code Level Details

560 D Low Voltage Fuser Reload Error

Reloading failed because of a voltage drop.

• Cycle the power OFF/ON.

• Ensure a stable power supply.

73
 5. Troubleshooting

SC6xx: Communication Errors

Code Level Details

688 D No CTL_PRREQ_N Signal

Paper failed to feed after the machine has reached the reload temperature,
because the main board did not issue a PRREQ signal.

• The main board harness connector is loose, broken, or defective.

• The main board is defective.

• Check the main board harness connector.

• Replace the main board.

SC10xx: Others

Code Level Details

RTB 4
Modified
1001 D Scan Motor Error

Scanner calibration failed (scanner cannot find the home position).

• Cycle the power OFF/ON.

• Check the connection.
• Replace the scanner unit.

74
 Image Problems

Image Problems
Overview

Image problems can occur at regular intervals [A] due to the different circumferences of rollers in the
machine and inside the AIO.

Diameter (mm) Interval (mm) Component

9.5 30 Charge Roller (AIO)

12 27 Development roller (AIO)

14.6 44 Relay roller

14.2 44.6 Exit Roller

12.14 38 Transfer roller

25.06 78.7 Fusing roller

24 75 Drum (AIO)

75
 5. Troubleshooting

Diameter (mm) Interval (mm) Component

28 88 Paper feed roller

Dark Lines in Halftone Areas

Dark lines in halftone fill areas can appear at 75 mm intervals when the machine is operating in a room
where the humidity is very low. (The low humidity causes variation in light sensitivity across the surface of
the drum.)
To prevent this problem, perform the following procedure.

1. Start CE Tools.
2. Click [Adjust Other Settings].
3. Select [1] (On) for Low Humidity Mode.
When this humidity mode setting is on, the drum is rotated slightly every 15 min. to keep the light
sensitivity consistent across the entire surface of the drum.

76
6. Energy Saving

Energy Save
Energy Saving Modes

77
 MEMO

78
MEMO

79
 MEMO

80 EN