Lexmark X940e, X945e MFP, X945e Service Manual

Edition: July 10, 2007

Lexmark™ X940e & X945e MFP

• Table of contents

• Start diagnostics

7510-XXX

• Safety and notices

• Trademarks

•Index

Lexmark and Lexmark with diamond design are
trademarks of Lexmark International, Inc., registered
in the United States and/or other countries.

7510-XXX

Edition: July 10, 2007

The following paragraph does not apply to any country where such provisions are inconsistent with local law:

LEXMARK INTERNATIONAL, INC. PROVIDES THIS PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of express or
implied warranties in certain transactions; therefore, this statement may not apply to you.

This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the
information herein; these changes will be incorporated in later editions. Improvements or changes in the products or the
programs described may be made at any time.

Comments may be addressed to Lexmark International, Inc., Department D22A/032-2, 740 West New Circle Road,
Lexington, Kentucky 40550, U.S.A or e-mail at [e-mail]. Lexmark may use or distribute any
of the information you supply in any way it believes appropriate without incurring any obligation to you.

References in this publication to products, programs, or services do not imply that the manufacturer intends to make these
available in all countries in which it operates. Any reference to a product, program, or service is not intended to state or
imply that only that product, program, or service may be used. Any functionally equivalent product, program, or service that
does not infringe any existing intellectual property right may be used instead. Evaluation and verification of operation in
conjunction with other products, programs, or services, except those expressly designated by the manufacturer, are the
user’s responsibility.

Lexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc., registered in the United States
and/or other countries.

PCL® is a registered trademark of the Hewlett-Packard Company.
All other trademarks are the property of their respective owners.

© 2007 Lexmark International, Inc.

All rights reserved.

UNITED STATES GOVERNMENT RIGHTS

This software and any accompanying documentation provided under this agreement are commercial computer software
and documentation developed exclusively at private expense.

P/N 12G9763

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Table of contents

Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

Notices and safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xxi

Laser notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi

Safety information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvii

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxx

Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxx

General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Printer technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Size and weight — without finisher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Printer overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Basic model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Configured model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Printer theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Media transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Media transport path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

MFP paper path rolls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

MFP sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Functions of main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Media tray assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Rear media guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

End guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Bottom plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Media tray assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Detection of media size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Media feed unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Media feed/lift motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Switch (media size) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Sensor (media out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Sensor (media level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Sensor (feed-out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Multi-purpose feeder (MPF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

MPF feed roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

MPF pick solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Sensor (MPF media out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Sensor (MPF media width) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Media size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Sensor (registration) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Sensor (transparency detect) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Registration clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Media transport roll assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Registration roll assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

Transfer belt drive motor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

Transfer belt cleaning assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

Transfer belt unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . 1-13

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Transfer belt steering motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-13

2nd transfer roll assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-13

2nd transfer roll retract motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-13

Sensor (2nd transfer roll HP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14

Printhead assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14

Printhead shutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-17

Fuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-18

Heat roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-18

Pressure belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-19

Heater lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-19

Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-19

Front thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-19

Rear thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-19

Fuser exit sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-19

Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-19

Standard media exit roll assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-20

Sensor (standard bin full) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-20

Standard media exit shift motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-20

Duplex diverter gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-20

Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-20

K developer/transport drive motor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-20

MPF/transport drive motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-20

CMYK PC cartridge drive motor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-21

CMY developer drive motor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-22

K developer clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-22

CMYK toner add motor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-22

Waste toner agitator motor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-23

Electrical components and controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-23

Switch (main power) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-23

Finisher AC output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-23

Switch (printer front door interlock) and switch (printer left door interlock) . . . . . . . . . . . . . . . .1-23

Switch (printer left lower door interlock) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-23

Fuser cooling fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-23

AC drive card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

5V LVPS card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-24

24V LVPS card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-24

CMYK transfer roll HVPS card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-24

Developer roll HVPS card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-24

Charge roll HVPS card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-24

Upper printer engine card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-25

Lower printer engine card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-25

RIP card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-25

Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-26

Media size control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-26

Printhead control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-26

Rotation of printhead motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Determination of printhead ready . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-27

Printhead reference value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

Fuser control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-27

Fuser control method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-27

Main/sub heater lamps on/off control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-27

Fuser warm-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-27

Xerographic process during a print cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-28

Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-29

Exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-30

Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-30

Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-31

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-32

Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-32

. . .1-26

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Auto density sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33

Document scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34

Document scanning at platen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34

Document scanning at ADF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

Setting a document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

Preparation for feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

Pre-feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

Pre-registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

Scan control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-37

Inversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-37

Simplex document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-38

Duplex document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-39

Image data flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41

Drive torque transfer scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42

ADF feed motor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42

ADF registration motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42

Gear layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-43

Names and functions of components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45

Scanner unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45

Sensor (platen length APS 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45

Sensor (platen length APS 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45

Switch (platen interlock) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45

Sensor (ADF angle) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45

Scanner drive motor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45

Sensor (scanner HP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45

Scanner exposure lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45

Exposure lamp PS card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45

Lens assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45

Scanner controller card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45

Scanner cooling fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45

ADF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-46

Sensor (ADF tray length 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-46

Sensor (ADF tray length 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-46

Sensor (document tray width 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-46

Sensor (ADF document set) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-46

Pick roll position motor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-46

Sensor (pick roll position HP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-46

ADF Document Set LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-47

Switch (ADF left cover interlock) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-47

ADF controller card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-47

Sensor (ADF APS 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-47

Sensor (ADF APS 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-47

Sensor (ADF APS 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-47

Sensor (ADF sheet through) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 1-47

Sensor (ADF pre-registration) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-47

Sensor (ADF registration) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-48

Sensor (ADF inverter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-48

ADF feed motor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-48

ADF registration motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-48

Inverter solenoid assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-48

Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-50

Document size detection at scanner unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-50

Document size detection timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-50

Identification of standard document sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-50

ADF document size detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-52

Document scanning steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-54

AGC (auto gain control): white level coarse adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-55

AOC (auto offset control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-55

Shading compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-55

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White level variation compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-55

Black level variation compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-55

TTM theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-56

Media transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-57

Media transport path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-57

Media transport path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-58

Functions of main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-58

Media tray assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-58

Rear media guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-58

Bottom plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-59

Tray 2 media tray assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-59

Tray 3 or 4 media tray assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-60

TTM media feed units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-61

Media feed unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-61

Media feed lift motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-61

Switch (media size) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-61

This switch (media size) sets the size of media supplied from each media tray a . . . . . . . . . . .1-61

Switch (TTM media size) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-61

Sensor (media out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-61

Sensor (media level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-61

Main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-62

Switch (tray module left door interlock) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-62

Sensor (tray 2 feed-out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-62

Sensor (tray 3 feed-out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-62

Sensor (tray 4 feed-out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-62

Tray module media transport roll assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-62

Tray module drive motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-63

TTM tray 4 media transport motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-63

TTM controller card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-63

Switch (TTM media size) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-64

3TM theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-65

Media transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-66

Media transport path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-66

Media transport path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-67

Functions of main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-67

Media tray assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-67

Media feed unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-67

Rear media guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-67

Bottom plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-68

Tray 2, 3, 4 media tray assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-68

3TM media feed units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-68

Media feed unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-68

Media feed lift motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-68

Switch (media size) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-68

Sensor (media out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-68

Sensor (media level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-68

Main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-69

Switch (tray module left door interlock) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-69

Sensor (tray 2 feed-out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-69

Sensor (tray 3 feed-out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-69

Sensor (tray 4 feed-out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-69

Tray module media transport roll assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-69

Tray module drive motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-70

3TM controller card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-70

Switch (media size) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-71

1TM theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-72

Media transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-73

Media transport path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-73

Media transport path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-74

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Functions of main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74

Media tray assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74

Rear media guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74

Bottom plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74

Tray 2 media tray assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-75

1TM media feed units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-75

Media feed unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-75

Media feed lift motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-75

Switch (media size) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-76

Sensor (media out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-76

Sensor (media level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-76

Main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-76

Switch (tray module left door interlock) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-76

Sensor (tray 2 feed-out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-77

Tray module media transport roll assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-77

Tray module drive motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-77

1TM controller card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-77

Switch (media size) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-78

Duplex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-79

Layout of media transport path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-80

Functions of main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-80

Switch (duplex left door interlock) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-80

Sensor (duplex wait) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-80

Duplex media transport roll assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-80

Duplex controller card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-81

Duplex drive motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-81

Tools required for service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-82

Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-83

Diagnostic information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Confirm the installation status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Power-on Reset sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Home screen and Home screen buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Using the LCD touch-screen buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Sample screen one . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Information on touch-screen buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Sample screen two . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Information on touch-screen buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Other touch-screen buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

To enter the diagnostic menu: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Error code table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Service checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36

200.00 Sensor (registration) late jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36

200.01 Sensor (registration) lag jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37

200.02 Sensor static jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39

200.03 Sensor (media on belt) late jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40

201.00 Sensor (fuser exit) late jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41

202.00 Sensor (fuser exit) lag jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43

230.00 Sensor (duplex wait) late jam (duplex media feed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-44

231.00 Sensor (registration) late jam (duplex feed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46

231.01 Sensor (registration) late jam (duplex media feed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48

241.00 Sensor (tray 1 feed-out) late jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-50

242.00 Sensor (tray 2 feed-out) late jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-52

242.01 Sensor (tray 1 feed-out) late jam (feeding from tray 2) . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53

243.00 Sensor (tray 3 feed-out) late jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-54

243.01 Sensor (tray 2 feed-out) late jam (feeding from tray 3) . . . . . . . . . . . . . . . . . . . . . . . . . . 2-56

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244.00 Sensor (tray 4 feed-out) late jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-58

244.01 Sensor (tray 3 feed-out) on jam (feeding from tray 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-60

250.00 Sensor (registration) late jam (feeding from the MPF) . . . . . . . . . . . . . . . . . . . . . . . . . .2-61

290.00 Switch (sheet through) static jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-63

290.01 Sensor (sheet through) late jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-64

290.02 Sensor (ADF pre-registration) late jam (side 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-66

290.03 Sensor (ADF pre-registration) lag jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-67

290.10 Sensor (ADF pre-registration) static jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-70

290.11 Sensor (ADF registration) late jam (side 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-71

290.12 Sensor (ADF registration) late jam (side 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-72

290.13 Sensor (ADF registration) lag jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-75

290.14 Sensor (ADF inverter) late jam (Inverting) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-77

290.15 Sensor (ADF registration) lag jam (inverting) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-79

290.20 Sensor (ADF width APS1), sensor (ADF width APS 2) and sensor (ADF width APS 3) static

jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-82

290.21 Sensor (ADF width APS 1) static jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-83

290.22 Sensor (ADF width APS 2) static jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-84

290.23 Sensor (ADF width APS 3) static jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-85

291.00 Sensor (ADF registration) static jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-86

291.01 Sensor (ADF inverter) lag jam (inverting) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-86

291.02 Sensor (ADF inverter) late jam 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-88

291.03 Sensor (ADF inverter) lag jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-90

292.01 ADF raised jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-92

292.02 ADF left cover jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-92

293.00 Document missing jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-92

294.00 Sensor (ADF inverter) static jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-93

294.01 Sensor (ADF pre-registration) late jam (side 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-94

294.02 Sensor (ADF pre-registration) lag jam (inverting) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-96

295.00 Size mismatch jam (mix-size) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-99

295.01 Size mismatch jam (no mix-size) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-101

295.02 Invalid combine size jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-102

295.03 Too short size jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-103

295.04 Too long size jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-104

295.05 Mixed size not supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-106

298.01 Scanner cable missing or unplugged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-106

Black toner cartridge detection error 841.00 Image pipeline ASIC error . . . . . . . . . . . . . . . . . .2-106

842.00 Scanner communication error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-107

842.01 Scanner communication error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-108

842.02 Scanner communication error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-108

842.03 Scanner communication error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-109

842.04 Scanner communication error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-109

842.10 Scanner unit assembly - ADF communication error . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-110

842.11 Scanner communication error (by scanner) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-110

842.12 Scanner unit assembly communication error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-111

843.00 Sensor (scanner HP) error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-112

843.01 Scanner carriage over run error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-113

843.10 ADF RAM test error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-113

843.11 ADF EEPROM error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-113

843.12 ADF pick roll position lift up error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-114

843.20 Scanner unit assembly connection error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-115

843.21 Scanner unit assembly EEPROM error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-115

843.22 Scanner unit assembly EEPROM sub system error . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-116

843.23 Scanner cooling fan error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-116

843.24 Image processing error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-117

843.25 Scanner controller card assembly error 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-117

843.26 Scanner controller card assembly error 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-118

844.00 Exposure lamp error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

844.01 White reference/exposure lamp illumination error . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-120

845.00 CCD error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-121

. . . .2-119

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845.01 CCD initialization (lamp on) error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-122

845.02 CCD initialization (lamp off) error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-123

846.00 Scanner communication error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-123

846.01 Scanner communication error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-124

846.10 Sensor (ADF width APS X) error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-124

846.12 Scanner unit assembly software logic error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-125

846.13 Switch (platen interlock) open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-126

847.00 Modem error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-126

847.01 Fax storage error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-127

848.00 Fax/modem configuration ID mismatch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-128

849.00 Hard drive/configuration ID mismatch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-128

900.XX RIP card assembly software error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-128

901.XX RIP card assembly software error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-129

903.00 K developer/transport drive assembly motor error . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-129

903.01 K PC drive motor error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-130

903.02 CMY PC drive motor error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-131

903.03 Developer drive motor error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-132

904.00 Sensor (transfer belt HP) late error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-133

904.01 Transfer belt position failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-133

904.02 Sensor (transfer belt edge) failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-134

904.03 Sensor (2nd transfer roll retract HP) late error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-135

904.04 Sensor (2nd transfer roll retract HP) lag error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-136

904.05 Sensor (CMY transfer roll retract HP) late error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-137

904.06 Sensor (CMY transfer roll retract HP) lag error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-138

904.07 CMY transfer roll retract motor time out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-138

905.00 NVM read/write cannot be executed error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-138

905.01 Marking device video error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-139

905.02 Marking device Xerographics error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-139

905.03 Marking device other1 error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-140

905.04 Marking device paper handling error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-140

905.05 Marking device other2 error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-140

907.00 Printhead polygon mirror motor error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-140

907.01 SOS internal error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-141

907.02 SOS internal error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-141

907.03 SOS internal error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-142

907.04 SOS internal error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-142

907.05 Printhead control error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-142

908.00 Waste toner full error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-143

911.00 24V LVPS cooling fan error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-143

911.01 Transfer belt drive motor cooling fan error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-144

911.02 Fuser cooling fan lock error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-144

918.00 Standard media exit shift error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-145

920.00 Fuser main lamp overheat error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-145

920.01 Front thermistor disconnection error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-146

920.02 Fuser sub lamp overheat error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-147

920.03 Rear thermistor disconnection error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-147

920.04 Main lamp warm up error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-148

920.05 Main lamp on-time error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-148

920.06 Sub lamp warm-up failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-149

920.07 Sub lamp on-time error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-150

924.00 Yellow toner RFID communication error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-150

924.01 Magenta toner RFID communication error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-151

924.02 Cyan toner RFID communication error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-151

924.03 Black toner RFID communication error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-151

925.00 Sensor (Y ATC) error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-152

925.01 Sensor (M ATC) error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-153

925.02 Sensor (C ATC) error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . 2-153

925.03 Sensor (K ATC) error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-154

940.00 MPF tray 5 size sensing error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-154

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941.00 Switch (media size) size sensing error (tray 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-155

941.01 Sensor (media level) late error (tray 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-155

942.00 Switch (media size) size sensing error (tray 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-156

942.01 Sensor (media level) late error (tray 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-157

943.00 Switch (media size) size sensing error (tray 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-158

943.01 Sensor (media level) late error (tray 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-159

944.00 Switch (media size) size sensing error (tray 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-160

944.01 Sensor (media level) late error (tray 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-161

980.00 Communication error with 1TM, 3TM, or TTM assembly . . . . . . . . . . . . . . . . . . . . . . . .2-162

980.01 HVPS controller communication error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-163

980.02 Communication error between printer and RIP card assembly . . . . . . . . . . . . . . . . . . .2-164

980.03 Communication error with finisher controller card assembly . . . . . . . . . . . . . . . . . . . .2-164

1TM, 3TM or TTM left door assembly open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-165

Duplex left door assembly open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-166

Media size mismatch in width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-167

Media size mismatch in width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-167

No media in the selected media tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-168

Paper is installed (short edge) in the media paper tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-170

PC cartridge end of life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-170

Printer front door assembly open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-171

Printer left door open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-172

Transfer belt access door open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-173

Printer left lower door assembly open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-173

100K maintenance required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-174

600K maintenance required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-174

ADF maintenance required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-175

Standard media bin full . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-175

Scanner unit assembly not detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-175

ADF left cover assembly is open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-176

Toner cartridge error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-177

Toner cartridge set error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-177

Waste toner cartridge full . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-178

Waste toner cartridge not detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-178

Waste toner cartridge nearly full . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-179

<Color> PC cartridge not detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-180

<Color> PC cartridge invalid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-180

CMY PC cartridges nearly exhausted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-180

CMY PC cartridges exhausted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-181

K PC cartridge nearly exhausted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-181

K PC cartridge exhausted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-182

<Color> toner cartridge nearly empty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-182

<Color> toner cartridge empty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-183

<Color> toner cartridge detection error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-184

Incorrect black toner cartridge error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-185

Incorrect <color> toner cartridge error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-185

Tray 1 media size mismatch error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-185

Tray 2 media size mismatch error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-186

Tray 3 media size mismatch error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-187

Tray 4 media size mismatch error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-187

Tray 1 media type mismatch error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-188

Tray 2 media type mismatch error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tray 3 media type mismatch error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-190

Tray 4 media type mismatch error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-190

Image quality trouble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-192

Printer Related Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-192

Image quality symptoms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-192

Image Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-193

Faint print (Low contrast) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-193

Blank print (no print) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-195

.2-189

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Solid black . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-197

Vertical lines and bands (process direction) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-198

Horizontal white stripes or bands (side to side direction) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-200

Vertical stripes (process direction) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-202

Horizontal stripes (side to side direction) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-204

Partial lack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-206

Spots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-208

After image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-209

Background (fog) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-211

Skew . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-213

Media damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-215

No fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-217

Color misregistration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-218

Deletions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-219

Hightfrequency bands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-220

ADF & Scanner Related Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-221

Image quality symptoms: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-221

ADF & Scanner Image Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-222

Dark image quality (using ADF or Scanner) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-222

Vertical lines (process direction using the ADF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-223

Spots (using flatbed scanner) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-224

Skew (using ADF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-225

Media damage (using ADF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-226

Diagnostic aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Accessing service menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Diagnostics Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Entering Diagnostics Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Available tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

MOTOR TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

PRINT TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Input Source Print Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Print Quality Test Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

HARDWARE TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Panel Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Button Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

DRAM Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

CACHE Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

DUPLEX TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Quick Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Sensor Test (duplex) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

INPUT TRAY TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Feed Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Sensor Test (input tray) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

OUTPUT BIN TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Feed Tests (output bins) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Feed To All Bins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Sensor Test (output bin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

FINISHER TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Staple Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Hole Punch Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

Feed Tests (Finisher) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

Sensor Test (Finisher) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

BASE SENSOR TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

DEVICE TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

Quick Disk Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

Disk Test/Clean . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

PRINTER SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Table of contents xi

7510-XXX

Printed Color Page Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-18

Printed Mono Page Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-19

Permanent Page Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-19

Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-19

Engine Setting 1 to 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-19

Model Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-19

Configuration ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-19

EVENT LOG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-20

Display the Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-21

Print the Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-22

Clear the Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-22

SCANNER TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-23

ASIC Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-23

Feed Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-23

Scanner Manual Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-24

Sensor Test (Scanner Tests) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-24

Trans Belt HP Fail Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-25

Dev Unit Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-25

Fuser Temp Fail Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-25

ATC SENSOR FAILURE CLEAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-25

ENGINE ADJUST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-26

Booklet Fold Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-29

Finisher Config . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-29

Testing the manual scanner registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-30

Analyzing the manual scanner registration copies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-31

Manually adjusting the scanner's registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-31

Scanner manual registration factory defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-33

Exiting Diagnostics Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-34

Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35

Entering Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-35

Available menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-35

Maintenance Counter Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-37

Reset Maintenance Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-37

USB Scan to Local . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-38

Black Only Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-38

Print Quality Pages (Configuration Menu) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-38

SIZE SENSING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-39

A5/Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-40

B5/Executive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-40

Panel Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-40

PPDS Emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-40

Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-41

Energy Conserve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-41

Min Copy Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-41

Format Fax Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-42

EVENT LOG (Configuration Menu) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ADF Edge Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-42

FB Edge Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-42

Paper Prompts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-43

Envelope Prompts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-43

Jobs On Disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-43

Disk Encryption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-43

Wipe Disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-46

Font Sharpening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-48

Require Standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-49

Short Edge Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-49

Tray Low Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-49

LES Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-49

Key Repeat Initial Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-50

.3-42

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Key Repeat Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-50

Exiting Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-50

Repair information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Handling ESD-sensitive parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Removal procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Before starting service work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Printer front door assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Right cover assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Top cover assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Rear cover assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Rear left middle cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Rear left upper cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Printer left lower door assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

MPF feed unit assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Front left cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Duplex media inverter assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Duplex unit assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Sensor (duplex wait) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

Switch (duplex left door interlock) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

Duplex media exit turn guide removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

Duplex drive motor removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Duplex controller card assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Fuser unit assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

Transfer belt unit assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Transfer belt cleaning assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17

Standard media exit shift assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17

Standard media exit bin full actuator removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18

Switch (printer left door interlock) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

Sensor (standard media bin full) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21

Media feed unit assembly 1 removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21

Sensor (media out) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22

Media out actuator removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22

Sensor (media level) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

Sensor (fuser exit) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25

Printer left door assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26

Printer left door damper removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28

Sensor (media on belt) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30

2nd transfer roll retract cam assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31

Sensor (2nd transfer roll retract HP) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34

2nd transfer roll retract motor assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35

2nd transfer roll assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35

Registration / transport roll assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36

Registration clutch removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37

Sensor (registration) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37

Sensor (transparency detect) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38

Waste toner cartridge cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39

Waste toner cartridge sensor assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39

Sensor (waste toner cartridge full) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40

Switch (waste toner cartridge interlock) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42

Inner cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-43

Waste toner agitator motor assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-44

PC cartridge unit removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-44

Image density sensor assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-45

CMY toner add assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-47

K toner add assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-48

Developer interlock plate assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-49

Developer unit assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-53

Developer carrier removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-55

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Photoconductor (PC) unit assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-58

Transfer belt lift latch assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-60

Transfer belt steering motor removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-62

CMY erase lamp assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-62

K erase lamp assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-63

Printhead shutter motor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-65

Switch (printer front door interlock) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-66

Sensor (printer left lower door interlock) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-67

RIP card cooling fan cover assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-67

Controller box assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-68

Switch (main power) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-69

Bridge card assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-70

RIP card access cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-71

RIP card assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-71

Fax interface card (modem) assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-72

Hard drive removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-72

Upper printer engine card bracket assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-73

Upper printer engine card assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-74

Lower printer engine card bracket assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-76

Lower printer engine card assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-77

Transfer belt drive motor cooling fan removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-78

Transfer belt drive motor assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-79

Switch (transfer belt access door interlock) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-79

Laser diode power card assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-80

24V LVPS card bracket assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-82

24V LVPS card assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-83

5V LVPS card bracket assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-83

5V LVPS card assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-84

24V LVPS cooling fan removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-85

Rear lower cooling fan assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-86

CMY developer drive motor assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-87

CMYK PC cartridge drive motor assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-88

Fuser cooling fan removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-89

Main power switch actuator removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-89

CMYK toner add motor assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-90

CMYK transfer HVPS card assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-91

Printhead assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-92

Transfer belt waste toner auger assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-93

K developer / transport drive motor assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-93

K developer clutch removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-96

AC drive card bracket assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-97

Noise filter assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-98

Rear upper cooling fan bracket assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-99

Rear upper cooling fan removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-99

Developer / transfer roll HVPS card assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-100

Charge roll HVPS card assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-101

MPF / transport drive motor assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-102

Feed roll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-103

Pick roll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-104

Separation roll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-105

Sensor (RFID toner cartridge) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-106

Fuser exit roll assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-107

MPF media out actuator removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-107

Sensor (MPF media out) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-108

MPF pick roll assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-108

Media feed lift motor removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-110

Switch (media size) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-111

Scanner removals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-112

Scanner unit assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-112

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7510-XXX

Platen cushion removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-113

Large platen glass removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-114

Scanner left cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-114

Scanner right cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-115

Scanner top rear cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-115

Operator panel assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-116

CCD card/lens assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-116

Scanner drive motor assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-118

Exposure lamp removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-119

Exposure lamp PS card assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-119

Scanner controller card assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-120

Sensor (scanner HP) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-121

ADF angle actuator assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-122

Sensor (ADF angle) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-122

Scanner PS card assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-123

Scanner PS cooling fan removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-124

ADF removals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-126

ADF unit assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-126

Platen cushion removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-127

ADF rear cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-128

ADF front cover assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-128

ADF left cover assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-129

ADF left cover handle removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-130

Left cover pinch roll assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-131

ADF feed drive motor assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-131

Media scan guide removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-132

ADF media feed assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-132

Document tray assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-134

ADF controller card assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-135

Inverter solenoid assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-136

Document set LED removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-137

Sheet through actuator removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-137

Sensor (pick roll position HP) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-138

ADF feed/pick roll assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-139

Document set actuator removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-140

ADF left cover media guide removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-141

Pick roll position motor assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-141

Switch (ADF left cover interlock) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-142

Sensor (ADF width APS 1) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-143

Sensor (ADF width APS 2) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-144

Sensor (ADF width APS 3) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-145

Sensor (ADF registration) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-146

Sensor (ADF pre-registration) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-147

Sensor (ADF inverter) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-148

Actuator/media guide assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-149

Inverter gate removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-149

ADF registration roll assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-149

ADF feed-out roll assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-150

ADF separation roll guide assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-152

ADF exit roll assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-153

ADF transport roll assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-154

Sensor (document set) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-154

Sensor (sheet through) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-155

ADF registration motor removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-156

Sensor (document tray width 1) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-157

Sensor (document tray width 2) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-158

Sensor (document tray width 3) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-159

Sensor (document tray length 1) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-160

Sensor (document tray length 2) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-161

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2000-sheet dual input (TTM) removals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-162

2000-sheet dual input (TTM)–top cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-162

2000-sheet dual input (TTM)–foot cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-162

2000-sheet dual input (TTM)–right cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-163

2000-sheet dual input (TTM)– tray module left cover removal . . . . . . . . . . . . . . . . . . . . . . . . .4-164

2000-sheet dual input (TTM)–rear cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-164

2000-sheet dual input (TTM)–caster removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-164

2000-sheet dual input (TTM)–tray support roll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-165

2000-sheet dual input (TTM)–TTM media tray 4 assembly removal . . . . . . . . . . . . . . . . . . . . .4-167

2000-sheet dual input (TTM)–TTM media tray 3 assembly removal . . . . . . . . . . . . . . . . . . . . .4-168

2000-sheet dual input (TTM)–tray 3 front cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-168

2000-sheet dual input (TTM)–tray 3 rear cable assembly removal . . . . . . . . . . . . . . . . . . . . . .4-169

2000-sheet dual input (TTM)–tray 3 front cable assembly removal . . . . . . . . . . . . . . . . . . . . .4-171

2000-sheet dual input (TTM)–TTM media tray 4 front cover removal . . . . . . . . . . . . . . . . . . . .4-172

2000-sheet dual input (TTM)–TTM tray 4 media transport assembly removal . . . . . . . . . . . .4-172

2000-sheet dual input (TTM)–tray 4 rear cables removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-172

2000-sheet dual input (TTM)–tray 4 front cables removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-175

2000-sheet dual input (TTM)–media feed unit assembly removal (tray 4) . . . . . . . . . . . . . . . .4-176

2000-sheet dual input (TTM)–sensor (tray 4 feed-out) removal . . . . . . . . . . . . . . . . . . . . . . . .4-178

2000-sheet dual input (TTM) switch (media size) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-179

2000-sheet dual input (TTM)–switch (TTM media size) removal . . . . . . . . . . . . . . . . . . . . . . . .4-179

2000-sheet dual input (TTM)–media feed unit assembly 2 removal . . . . . . . . . . . . . . . . . . . . .4-180

2000-sheet dual input (TTM)–media feed unit assembly removal (tray 3) . . . . . . . . . . . . . . . .4-180

2000-sheet dual input (TTM)–sensor (tray 3 feed-out) removal . . . . . . . . . . . . . . . . . . . . . . . .4-182

2000-sheet dual input (TTM)–sensor (tray 2 feed-out) removal . . . . . . . . . . . . . . . . . . . . . . . .4-183

2000-sheet dual input (TTM)–media feed lift motor removal . . . . . . . . . . . . . . . . . . . . . . . . . . .4-183

2000-sheet dual input (TTM)–one-way clutch / gear assembly removal . . . . . . . . . . . . . . . . .4-185

2000-sheet dual input (TTM)–media out actuator removal . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-187

2000-sheet dual input (TTM)–sensor (media level) removal . . . . . . . . . . . . . . . . . . . . . . . . . . .4-188

2000-sheet dual input (TTM)–sensor (media out) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-189

2000-sheet dual input (TTM)–feed roll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-190

2000-sheet dual input (TTM)–feed roll one-way clutch removal . . . . . . . . . . . . . . . . . . . . . . . .4-191

2000-sheet dual input (TTM)–one-way 22 tooth removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-192

2000-sheet dual input (TTM)–separation roll one-way friction clutch removal . . . . . . . . . . . .4-193

2000-sheet dual input (TTM)–separation roll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-194

2000-sheet dual input (TTM)–pick roll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-196

2000-sheet dual input (TTM)–left door assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-197

2000-sheet dual input (TTM)–switch (TTM left door interlock) removal . . . . . . . . . . . . . . . . . .4-198

2000-sheet dual input (TTM)–tray 3 lift gear assembly removal . . . . . . . . . . . . . . . . . . . . . . . .4-199

2000-sheet dual input (TTM)–tray 4 lift gear assembly removal . . . . . . . . . . . . . . . . . . . . . . . .4-199

2000-sheet dual input (TTM)–tray lift coupling assembly removal . . . . . . . . . . . . . . . . . . . . . .4-200

2000-sheet dual input (TTM)–tray module drive motor assembly removal . . . . . . . . . . . . . . .4-200

2000-sheet dual input (TTM)–TTM tray 4 transport motor removal . . . . . . . . . . . . . . . . . . . . .4-202

2000-sheet dual input (TTM)–TTM controller card assembly removal . . . . . . . . . . . . . . . . . . .4-202

3X 500-sheet drawer (3TM) removals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-203

3X 500-sheet drawer (3TM)–top cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-203

3X 500-sheet drawer (3TM)–foot cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-204

3X 500-sheet drawer (3TM)–right cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-204

3X 500-sheet drawer (3TM)–tray module left cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . .4-205

3X 500-sheet drawer (3TM)–rear cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-205

3X 500-sheet drawer (3TM)–caster removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-206

3X 500-sheet 3TM)–media feed unit assembly removal (tray 4) . . . . . . . . . . . . . . . . . . . . . . . .4-206

3X 500-sheet drawer (3TM)–sensor (tray 4 feed-out) removal . . . . . . . . . . . . . . . . . . . . . . . . .4-207

3X 500-sheet drawer (3TM)–sensor (tray 2 feed-out) removal . . . . . . . . . . . . . . . . . . . . . . . . .4-208

3X 500-sheet drawer (3TM)–switch (media size) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-209

3X 500-sheet drawer (3TM)–media feed unit assembly removal (tray 3) . . . . . . . . . . . . . . . . .4-210

3X 500-sheet drawer (3TM)–media feed unit assembly removal (tray 2) . . . . . . . . . . . . . . . . .4-212

3X 500-sheet drawer (3TM)–sensor (tray 3 feed-out) removal . . . . . . . . . . . . . . . . . . . . . . . . .4-213

3X 500-sheet drawer (3TM)–media feed lift motor removal . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-214

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3X 500-sheet drawer (3TM)–one-way clutch / gear assembly removal . . . . . . . . . . . . . . . . . . 4-215

3X 500-sheet drawer (3TM)–media out actuator removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-216

3X 500-sheet drawer (3TM)–sensor (media level) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-217

3X 500-sheet drawer (3TM)–sensor (media out) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-218

3X 500-sheet drawer (3TM)–feed roll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-219

3X 500-sheet drawer (3TM)–feed roll one-way clutch removal . . . . . . . . . . . . . . . . . . . . . . . . 4-220

3X 500-sheet drawer (3TM)–one-way 22 tooth removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-221

3X 500-sheet drawer (3TM)–separation roll one-way friction clutch removal . . . . . . . . . . . . 4-222

3X 500-sheet drawer (3TM)–separation roll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-223

3X 500-sheet drawer (3TM)–pick roll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-225

3X 500-sheet drawer (3TM)–3TM left door assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . 4-226

3X 500-sheet drawer (3TM)–switch (tray module left door interlock) removal . . . . . . . . . . . . 4-226

3X 500-sheet drawer (3TM)–tray module drive motor assembly removal . . . . . . . . . . . . . . . 4-227

3X 500-sheet drawer (3TM)–3TM controller card assembly removal . . . . . . . . . . . . . . . . . . . 4-228

1X 500-sheet drawer (1TM) removals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-229

1X 500-sheet drawer (1TM)–top cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-229

1X 500-sheet drawer (1TM)–front door removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-230

1X 500-sheet drawer (1TM)–foot cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-230

1X 500-sheet drawer (1TM)–right cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-230

1X 500-sheet drawer (1TM)–tray module left cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . 4-232

1X 500-sheet drawer (1TM)–rear cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-232

1X 500-sheet drawer (1TM)–caster removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-233

1X 500-sheet drawer (1TM)–media feed unit assembly removal (tray 2) . . . . . . . . . . . . . . . . 4-233

1X 500-sheet drawer (1TM)–sensor (tray 2 feed-out) removal . . . . . . . . . . . . . . . . . . . . . . . . . 4-234

1X 500-sheet drawer (1TM)–switch (media size) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-235

1X 500-sheet drawer (1TM)–media feed lift motor removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-236

1X 500-sheet drawer (1TM)–one-way clutch / gear assembly removal . . . . . . . . . . . . . . . . . . 4-236

1X 500-sheet drawer (1TM)–media out actuator removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-238

1X 500-sheet drawer (1TM)–sensor (media level) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-239

1X 500-sheet drawer (1TM)–sensor (media out) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-240

1X 500-sheet drawer (1TM)–feed roll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-241

1X 500-sheet drawer (1TM)–feed roll one-way clutch removal . . . . . . . . . . . . . . . . . . . . . . . . 4-242

1X 500-sheet drawer (1TM)–one-way 22 tooth removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-243

1X 500-sheet drawer (1TM)–separation roll one-way friction clutch removal . . . . . . . . . . . . 4-244

1X 500-sheet drawer (1TM)–separation roll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-245

1X 500-sheet drawer (1TM)–pick roll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-246

1X 500-sheet drawer (1TM)–tray module left door assembly removal . . . . . . . . . . . . . . . . . . 4-247

1X 500-sheet drawer (1TM)–switch (tray module left door interlock) removal . . . . . . . . . . . . 4-248

1X 500-sheet drawer (1TM)–tray module drive motor assembly removal . . . . . . . . . . . . . . . 4-249

1X 500-sheet drawer (1TM)–1TM controller card assembly removal . . . . . . . . . . . . . . . . . . . 4-249

Setup and adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-250

Sensor (ATC) setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-250

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-251

Color registration (RegCon) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-254

Measurement cycle test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-254

Control sensor check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-256

Control sensor cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-256

Belt edge learn test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-257

Skew fine setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-257

In/out setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-262

Center setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-266

Connector locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

Preventive maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Safety inspection guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Scheduled maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

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Parts catalog. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

How to use this parts catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1

Assembly 1: Covers 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Assembly 2: Covers 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

Assembly 3: Covers 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

Assembly 4: PC cartridge and developer drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

Assembly 5: ID sensor and transfer belt steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Assembly 6: Media tray. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

Assembly 7: Printer left lower door and media feed unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

Assembly 8: Media feed unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

Assembly 9: MPF feed unit assembly 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11

Assembly 10: MPF feed unit assembly 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12

Assembly 11: MPF feed unit assembly 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13

Assembly 12: Registration / transport roll assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14

Assembly 13: Printer left door and duplex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15

Assembly 14: Printer left door assembly 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16

Assembly 15: Printer left door assembly 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17

Assembly 16: Duplex media inverter assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18

Assembly 17: Duplex 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

Assembly 18: Duplex 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20

Assembly 19: Standard media exit shift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21

Assembly 20: Printhead assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22

Assembly 21: Xerographic and waste toner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23

Assembly 22: Erase lamps and developer interlock plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24

Assembly 23: Transfer belt lift 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-25

Assembly 24: Transfer belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26

Assembly 25: Transfer belt lift 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27

Assembly 26: Toner Dispense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28

Assembly 27: Developer unit assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29

Assembly 28: Fuser assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30

Assembly 29: Cooling fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-31

Assembly 30: Electrical 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-32

Assembly 31: Electrical 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-34

Assembly 32: Electrical 3

Assembly 33: Electrical 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37

Assembly 34: ADF assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-39

Assembly 35: ADF covers and components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-40

Assembly 36: ADF base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41

Assembly 37: ADF feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-43

Assembly 38: ADF left cover components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-45

Assembly 39: ADF media guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-47

Assembly 40: ADF feeder roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-49

Assembly 41: ADF motor unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-51

Assembly 42: ADF document tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-52

Assembly 43: Scanner covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-53

Assembly 44: CCD lens assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-54

Assembly 45: Control panel and platen glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-56

Assembly 46: Scanner electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-58

Assembly 47: Scanner optics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-59

Assembly 48: Carriage cable and motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-61

Assembly 49: MFP rack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-62

Assembly 50: 1TM covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-63

Assembly 51: 1TM feed unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-64

Assembly 52: 1TM media feed unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-66

Assembly 53: 1TM left door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-68

Assembly 54: 1TM drive and electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-69

Assembly 55: 3TM covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-71

Assembly 56: 3TM feed unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-73

Assembly 57: 3TM media feed unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-75

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-35

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Assembly 58: 3TM left door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-77

Assembly 59: 3TM drive and electrical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-79

Assembly 60: TTM covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-81

Assembly 61: TTM media trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-82

Assembly 62: TTM media tray 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-84

Assembly 63: TTM media tray 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-86

Assembly 64: TTM media tray 4 transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-87

Assembly 65: TTM media transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-88

Assembly 66: TTM left door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-89

Assembly 67: TTM tray lift drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-90

Assembly 68: TTM drive and electrical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-91

Assembly 69: Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-93

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1

Part number index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-7

Table of contents xix

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xx MFP Service Manual

Notices and safety information

The following laser notice labels may be affixed to this printer.

Laser notice

The printer is certified in the U.S. to conform to the requirements of DHHS 21 CFR Subchapter J for Class I (1)
laser products, and elsewhere is certified as a Class I laser product conforming to the requirements of IEC
60825-1.

Class I laser products are not considered to be hazardous. The printer contains internally a Class IIIb (3b) laser
that is nominally a 5 milliwatt gallium arsenide laser operating in the wavelength region of 770-795 nanometers.
The laser system and printer are designed so there is never any human access to laser radiation above a Class
I level during normal operation, user maintenance, or prescribed service condition.

Laser

Der Drucker erfüllt gemäß amtlicher Bestätigung der USA die Anforderungen der Bestimmung DHHS
(Department of Health and Human Services) 21 CFR Teil J für Laserprodukte der Klasse I (1). In anderen
Ländern gilt der Drucker als Laserprodukt der Klasse I, der die Anforderungen der IEC (International
Electrotechnical Commission) 60825-1 gemäß amtlicher Bestätigung erfüllt.

7510-XXX

Laserprodukte der Klasse I gelten als unschädlich. Im Inneren des Druckers befindet sich ein Laser der Klasse
IIIb (3b), bei dem es sich um einen Galliumarsenlaser mit 5 Milliwatt handelt, der Wellen der Länge 770-795
Nanometer ausstrahlt. Das Lasersystem und der Drucker sind so konzipiert, daß im Normalbetrieb, bei der
Wartung durch den Benutzer oder bei ordnungsgemäßer Wartung durch den Kundendienst Laserbestrahlung,
die Klasse I übersteigen würde, Menschen keinesfalls erreicht.

Avis relatif à l’utilisation de laser

Pour les Etats-Unis : cette imprimante est certifiée conforme aux provisions DHHS 21 CFR alinéa J concernant
les produits laser de Classe I (1). Pour les autres pays : cette imprimante répond aux normes IEC 60825-1
relatives aux produits laser de Classe I.

Les produits laser de Classe I sont considérés comme des produits non dangereux. Cette imprimante est
équipée d’un laser de Classe IIIb (3b) (arséniure de gallium d’une puissance nominale de 5 milliwatts) émettant
sur des longueurs d’onde comprises entre 770 et 795 nanomètres. L’imprimante et son système laser sont
conçus pour impossible, dans des conditions normales d’utilisation, d’entretien par l’utilisateur ou de révision,
l’exposition à des rayonnements laser supérieurs à des rayonnements de Classe I .

Avvertenze sui prodotti laser

Questa stampante è certificata negli Stati Uniti per essere conforme ai requisiti del DHHS 21 CFR Sottocapitolo
J per i prodotti laser di classe 1 ed è certificata negli altri Paesi come prodotto laser di classe 1 conforme ai
requisiti della norma CEI 60825-1.

I prodotti laser di classe non sono considerati pericolosi. La stampante contiene al suo interno un laser di classe
IIIb (3b) all’arseniuro di gallio della potenza di 5mW che opera sulla lunghezza d’onda compresa tra 770 e 795
nanometri. Il sistema laser e la stampante sono stati progettati in modo tale che le persone a contatto con la
stampante, durante il normale funzionamento, le operazioni di servizio o quelle di assistenza tecnica, non
ricevano radiazioni laser superiori al livello della classe 1.

Notices and safety information xxi

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Avisos sobre el láser

Se certifica que, en los EE.UU., esta impresora cumple los requisitos para los productos láser de Clase I (1)
establecidos en el subcapítulo J de la norma CFR 21 del DHHS (Departamento de Sanidad y Servicios) y, en
los demás países, reúne todas las condiciones expuestas en la norma IEC 60825-1 para productos láser de
Clase I (1).

Los productos láser de Clase I no se consideran peligrosos. La impresora contiene en su interior un láser de
Clase IIIb (3b) de arseniuro de galio de funcionamiento nominal a 5 milivatios en una longitud de onda de 770 a
795 nanómetros. El sistema láser y la impresora están diseñados de forma que ninguna persona pueda verse
afectada por ningún tipo de radiación láser superior al nivel de la Clase I durante su uso normal, el
mantenimiento realizado por el usuario o cualquier otra situación de servicio técnico.

Declaração sobre Laser

A impressora está certificada nos E.U.A. em conformidade com os requisitos da regulamentação DHHS 21 CFR
Subcapítulo J para a Classe I (1) de produtos laser. Em outros locais, está certificada como um produto laser da
Classe I, em conformidade com os requisitos da norma IEC 60825-1.

Os produtos laser da Classe I não são considerados perigosos. Internamente, a impressora contém um produto
laser da Classe IIIb (3b), designado laser de arseneto de potássio, de 5 milliwatts ,operando numa faixa de
comprimento de onda entre 770 e 795 nanómetros. O sistema e a impressora laser foram concebidos de forma
a nunca existir qualquer possiblidade de acesso humano a radiação laser superior a um nível de Classe I
durante a operação normal, a manutenção feita pelo utilizador ou condições de assistência prescritas.

Laserinformatie

De printer voldoet aan de eisen die gesteld worden aan een laserprodukt van klasse I. Voor de Verenigde Staten
zijn deze eisen vastgelegd in DHHS 21 CFR Subchapter J, voor andere landen in IEC 60825-1.

Laserprodukten van klasse I worden niet als ongevaarlijk aangemerkt. De printer is voorzien van een laser van
klasse IIIb (3b), dat wil zeggen een gallium arsenide-laser van 5 milliwatt met een golflengte van 770-795
nanometer. Het lasergedeelte en de printer zijn zo ontworpen dat bij normaal gebruik, bij onderhoud of reparatie
conform de voorschriften, nooit blootstelling mogelijk is aan laserstraling boven een niveau zoals
voorgeschreven is voor klasse 1.

Lasermeddelelse

Printeren er godkendt som et Klasse I-laserprodukt, i overenstemmelse med kravene i IEC 60825-1.

Klasse I-laserprodukter betragtes ikke som farlige. Printeren indeholder internt en Klasse IIIB (3b)-laser, der
nominelt er en 5 milliwatt galliumarsenid laser, som arbejder på bølgelængdeområdet 770-795 nanometer.
Lasersystemet og printeren er udformet således, at mennesker aldrig udsættes for en laserstråling over Klasse
I-niveau ved normal drift, brugervedligeholdelse eller obligatoriske servicebetingelser.

xxii MFP Service Manual

Laserilmoitus

Tämä tulostin on sertifioitu Yhdysvalloissa DHHS 21 CFR Subchapter J -standardin mukaiseksi luokan I (1) ­lasertuotteeksi ja muualla IEC 60825-1 -standardin mukaiseksi luokan I lasertuotteeksi.

Luokan I lasertuotteita ei pidetä haitallisina. Tulostimen sisällä on luokan IIIb (3b) laser, joka on nimellisteholtaan
5 mW:n galliumarsenidilaser ja toimii 770 - 795 nanometrin aallonpituuksilla. Laserjärjestelmä ja tulostin ovat
rakenteeltaan sellaisia, että käyttäjä ei joudu alttiiksi luokkaa 1 suuremmalle säteilylle normaalin käytön,
ylläpidon tai huollon aikana.

Huomautus laserlaitteesta

Tämä kirjoitin on Yhdysvalloissa luokan I (1) laserlaitteiden DHHS 21 CFR Subchapter J -määrityksen mukainen
ja muualla luokan I laserlaitteiden IEC 60825-1 -määrityksen mukainen.

Luokan I laserlaitteiden ei katsota olevan vaarallisia käyttäjälle. Kirjoittimessa on sisäinen luokan IIIb (3b) 5
milliwatin galliumarsenidilaser, joka toimii aaltoalueella 770 - 795 nanometriä. Laserjärjestelmä ja kirjoitin on
suunniteltu siten, että käyttäjä ei altistu luokan I määrityksiä voimakkaammalle säteilylle kirjoittimen normaalin
toiminnan, käyttäjän tekemien huoltotoimien tai muiden huoltotoimien yhteydessä.

VARO! Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle. Älä katso
säteeseen.

7510-XXX

VARNING! Osynlig laserstrålning när denna del är öppnad och spärren är urkopplad. Betrakta ej strålen.

Laser-notis

Denna skrivare är i USA certifierad att motsvara kraven i DHHS 21 CFR, underparagraf J för laserprodukter av
Klass I (1). I andra länder uppfyller skrivaren kraven för laserprodukter av Klass I enligt kraven i IEC 60825-1.

Laserprodukter i Klass I anses ej hälsovådliga. Skrivaren har en inbyggd laser av Klass IIIb (3b) som består av
en laserenhet av gallium-arsenid på 5 milliwatt som arbetar i våglängdsområdet 770-795 nanometer.
Lasersystemet och skrivaren är utformade så att det aldrig finns risk för att någon person utsätts för
laserstrålning över Klass I-nivå vid normal användning, underhåll som utförs av användaren eller annan
föreskriven serviceåtgärd.

Laser-melding

Skriveren er godkjent i USA etter kravene i DHHS 21 CFR, underkapittel J, for klasse I (1) laserprodukter, og er
i andre land godkjent som et Klasse I-laserprodukt i samsvar med kravene i IEC 60825-1.

Klasse I-laserprodukter er ikke å betrakte som farlige. Skriveren inneholder internt en klasse IIIb (3b)-laser, som
består av en gallium-arsenlaserenhet som avgir stråling i bølgelengdeområdet 770-795 nanometer.
Lasersystemet og skriveren er utformet slik at personer aldri utsettes for laserstråling ut over klasse I-nivå under
vanlig bruk, vedlikehold som utføres av brukeren, eller foreskrevne serviceoperasjoner.

Notices and safety information xxiii

7510-XXX

Avís sobre el Làser

Segons ha estat certificat als Estats Units, aquesta impressora compleix els requisits de DHHS 21 CFR, apartat
J, pels productes làser de classe I (1), i segons ha estat certificat en altres llocs, és un producte làser de classe
I que compleix els requisits d’IEC 60825-1.

Els productes làser de classe I no es consideren perillosos. Aquesta impressora conté un làser de classe IIIb
(3b) d’arseniür de gal.li, nominalment de 5 mil.liwats, i funciona a la regió de longitud d’ona de 770-795
nanòmetres. El sistema làser i la impressora han sigut concebuts de manera que mai hi hagi exposició a la
radiació làser per sobre d’un nivell de classe I durant una operació normal, durant les tasques de manteniment
d’usuari ni durant els serveis que satisfacin les condicions prescrites.

xxiv MFP Service Manual

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Notices and safety information xxv

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xxvi MFP Service Manual

Safety information

• The safety of this product is based on testing and approvals of the original design and specific

components. The manufacturer is not responsible for safety in the event of use of unauthorized
replacement parts.

• The maintenance information for this product has been prepared for use by a professional service person

and is not intended to be used by others.

• There may be an increased risk of electric shock and personal injury during disassembly and servicing of

this product. Professional service personnel should understand this and take necessary precautions.

• CAUTION: When you see this symbol, there is a danger from hazardous voltage in the area of the

product where you are working. Unplug the product before you begin, or use caution if the product
must receive power in order to perform the task.

Consignes de sécurité

• La sécurité de ce produit repose sur des tests et des

agréations portant sur sa conception d'origine et sur des composants particuliers. Le fabricant n'assume
aucune responsabilité concernant la sécurité en cas d'utilisation de pièces de rechange non agréées.

• Les consignes d'entretien et de réparation de ce produit s'adressent uniquement à un personnel de

maintenance qualifié.

• Le démontage et l'entretien de ce produit pouvant présenter certains risques électriques, le personnel

d'entretien qualifié devra prendre toutes les précautions nécessaires.

• ATTENTION : Ce symbole indique la présence d'une tension dangereuse dans la partie du

produit sur laquelle vous travaillez. Débranchez le produit avant de commencer ou faites preuve
de vigilance si l'exécution de la tâche exige que le produit reste sous tension.

7510-XXX

Norme di sicurezza

• La sicurezza del prodotto si basa sui test e sull'approvazione del progetto originale e dei componenti

specifici. Il produttore non è responsabile per la sicurezza in caso di sostituzione non autorizzata delle
parti.

• Le informazioni riguardanti la manutenzione di questo prodotto sono indirizzate soltanto al personale di

assistenza autorizzato.

• Durante lo smontaggio e la manutenzione di questo prodotto,

il rischio di subire scosse elettriche e danni alla persona è più elevato. Il personale di assistenza
autorizzato deve, quindi, adottare le precauzioni necessarie.

• ATTENZIONE: Questo simbolo indica la presenza di tensione pericolosa nell'area del prodotto.

Scollegare il prodotto prima di iniziare o usare cautela se il prodotto deve essere alimentato per
eseguire l'intervento.

Safety information xxvii

7510-XXX

Sicherheitshinweise

• Die Sicherheit dieses Produkts basiert auf Tests und Zulassungen des ursprünglichen Modells und

bestimmter Bauteile. Bei Verwendung nicht genehmigter Ersatzteile wird vom Hersteller keine
Verantwortung oder Haftung für die Sicherheit übernommen.

• Die Wartungsinformationen für dieses Produkt sind ausschließlich für die Verwendung durch einen

Wartungsfachmann bestimmt.

• Während des Auseinandernehmens und der Wartung des Geräts besteht ein zusätzliches Risiko eines

elektrischen Schlags und körperlicher Verletzung. Das zuständige Fachpersonal sollte entsprechende
Vorsichtsmaßnahmen treffen.

• ACHTUNG: Dieses Symbol weist auf eine gefährliche elektrische Spannung hin, die in diesem

Bereich des Produkts auftreten kann. Ziehen Sie vor den Arbeiten am Gerät den Netzstecker des
Geräts, bzw. arbeiten Sie mit großer Vorsicht, wenn das Produkt für die Ausführung der Arbeiten
an den Strom angeschlossen sein muß.

Pautas de Seguridad

• La seguridad de este producto se basa en pruebas y aprobaciones del diseño original y componentes

específicos. El fabricante no es responsable de la seguridad en caso de uso de piezas de repuesto no
autorizadas.

• La información sobre el mantenimiento de este producto está dirigida exclusivamente al personal

cualificado de mantenimiento.

• Existe mayor riesgo de descarga eléctrica y de daños personales durante el desmontaje y la reparación de

la máquina. El personal cualificado debe ser consciente de este peligro y tomar las precauciones
necesarias.

• PRECAUCIÓN: este símbolo indica que el voltaje de la parte del equipo con la que está

trabajando es peligroso. Antes de empezar, desenchufe el equipo o tenga cuidado si, para
trabajar con él, debe conectarlo.

Informações de Segurança

• A segurança deste produto baseia-se em testes e aprovações do modelo original e de componentes

específicos. O fabricante não é responsável pela segunrança, no caso de uso de peças de substituição
não autorizadas.

• As informações de segurança relativas a este produto destinam-se a profissionais destes serviços e não

devem ser utilizadas por outras pessoas.

• Risco de choques eléctricos e ferimentos graves durante a desmontagem e manutenção deste produto.

Os profissionais destes serviços devem estar avisados deste facto e tomar os cuidados necessários.

• CUIDADO: Quando vir este símbolo, existe a possível presença de uma potencial tensão

perigosa na zona do produto em que está a trabalhar. Antes de começar, desligue o produto da
tomada eléctrica ou seja cuidadoso caso o produto tenha de estar ligado à corrente eléctrica para
realizar a tarefa necessária.

xxviii MFP Service Manual

Informació de Seguretat

• La seguretat d'aquest producte es basa en l'avaluació i aprovació del disseny original i els components

específics.
El fabricant no es fa responsable de les qüestions de
seguretat si s'utilitzen peces de recanvi no autoritzades.

• La informació pel manteniment d’aquest producte està orientada exclusivament a professionals i no està

destinada
a ningú que no ho sigui.

• El risc de xoc elèctric i de danys personals pot augmentar durant el procés de desmuntatge i de servei

d’aquest producte. El personal professional ha d’estar-ne assabentat i prendre
les mesures convenients.

• PRECAUCIÓ: aquest símbol indica que el voltatge de la part de l'equip amb la qual esteu

treballant és perillós. Abans de començar, desendolleu l'equip o extremeu les precaucions si, per
treballar amb l'equip, l'heu de connectar.

7510-XXX

Safety information xxix

7510-XXX

Preface

This manual contains maintenance procedures for service personnel. It is divided into the following chapters:

1. General information contains a general description of the printer and the maintenance approach used to

repair it. Special tools and test equipment, as well as general environmental and safety instructions, are
discussed.

2. Diagnostic information contains an error indicator table, symptom tables, and service checks used to

isolate failing field replaceable units (FRUs).

3. Diagnostic aids contains tests and checks used to locate or repeat symptoms of printer problems.

4. Repair information provides instructions for making printer adjustments and removing and installing

FRUs.

5. Connector locations uses illustrations to identify the connector locations and test points on the printer.

6. Preventive maintenance contains the lubrication specifications and recommendations to prevent

problems.

7. Parts catalog contains illustrations and part numbers for individual FRUs.

Appendix A contains service tips and information.
Appendix B contains representative print samples.

Conventions

Note: A note provides additional information.
Warning: A warning identifies something that might damage the product hardware or software.

There are several types of caution statements:

CAUTION

A caution identifies something that might cause a servicer harm.

CAUTION

This type of caution indicates there is a danger from hazardous voltage in the area of the
product where you are working. Unplug the product before you begin, or use caution if the
product must receive power in order to perform the task.

CAUTION

This type of caution indicates a hot surface.

CAUTION

This type of caution indicates a tipping hazard.

xxx MFP Service Manual

1. General information

The Lexmark™ X940e and X945e are color laser MFPs that provide print, copy, scan, and fax functions. All
information in this service manual pertains to both models unless explicitly noted.

Printer technology

• Color laser

Processor

• 1.25 GHz

Memory

• Standard: 512 MB

• Maximum: 1024 MB

• Hard Drive: 80 GB

Acoustics

7510-XXX

All measurements were made in accordance with ISO 7779 and reported in conformance with ISO 9296.

Mode Sound pressure level (dBA) Sound power level (Bels)

Printing 52 6.9
Copying 53 7.2
Scanning

Standby mode

Environment

Specified operating environment

Operating temperature 15.6 C to 32.2 C (6o to 90°F
Relative humidity 8% to 80%
Altitude 2,500 meters (8,200 feet)

Connectivity

• Standard - USB and internet

• Optional - parallel and serial

Size and weight — without finisher

• Size: H x W x D — 42 x 27 x 25 in. (1153 x 660 x 810 mm)

• Weight: 383 lb. (174 kg)

54
32

7.0

Specifications

Scanner type
Scan Technology

Scanner

White Xe lamp
CCD

General information 1-1

7510-XXX

Scanner

Number of light sources 1
Color bit depth

Maximum optical resolution

24
600 x 600

Scan area - flatbed 297 x 432 mm

Scanner ADF

Type
Optical resolution ADF (mono)

C-path (duplexing)
Maximum 600 x 600 dpi

Optical resolution ADF (color) Maximum 600 x 300 dpi

2

Document capacity 75 sheets (80 g/m
Media weight

Media weight
Speed - maximum

(Letter/A4 long-edge fed)

Maximum 32 lb (128g/m
Minimum 16 lb (38 g/m

Mono: up to 45 SPM
Color: up to 45 SPM

) bond

2

)

2

) (50 g/m2 for duplex mode)

Scan area - ADF Maximum 11.7 x 17 inches (297 x 432 mm)

Minimum 5.5 x 8.25 inches (139.7 x 210 mm)

Enlargement/reduction capability 25 to 400%

1-2 MFP Service Manual

Printer overview

CAUTION: Do not set up this product or make any electrical or cabling connections, such as the

power cord or options and features, during a lightning storm.

Basic model

The following illustration shows a printer with its base features.

Duplex unit

ADF

7510-XXX

Operator
panel

Multipurpose
feeder
(MPF)

Configured model

Tray 3 and tray 4
850+1150 sheet dual
input tray (TTM)

Tray 1 and tray 2
(500 sheet trays)

General information 1-3

7510-XXX

The following illustration shows a fully configured printer. Items denoted with an asterisk (*) are options.

ADF

Operator
panel

Duplex unit

Bridge unit*
(Used in conjunction

Multipurpose

with finisher)

feeder
(MPF)

Finisher*

Tray 1 and tray 2
(500 sheet trays)

Tray 3 and tray 4
850+1150 sheet dual
input tray (TTM)

1-4 MFP Service Manual

Printer theory

Media transport

Media transport path

Media is supplied from the MPF, tray 1, 2, 3 or 4, and is transported to the printer along the media transport path
shown below.

MPF

Tray 1

Tray 2

Tray 3

7510-XXX

Tray 4

MPF pick roll

MPF Transport Roll ASM

MPF ASM

Pick roll

Separation roll

Feed roll

Media feed

unit ASM

Pick roll

Separation roll

Feed roll

Media feed

unit ASM

Registration roll ASM

2nd Transfer roll ASM

Transfer belt

Heat roll

Pressure belt

Pick roll

Separation roll

Feed roll

Media feed

unit ASM

Media transport roll ASM

Fuser unit ASM

Pick roll

Separation roll

Feed roll

Media feed

unit ASM

Standard media exit roll assembly

Print exit

Fuser media

exit roll assembly

Standard

media exit

Duplex mediatransport roll ASM

General information 1-5

7510-XXX

MFP paper path rolls

Bridge unit bin exit
roll assembly

Standard media exit
roll assembly

Fuser exit
roll assembly

ADF and Scanner

Bridge unit assembly
(included with finisher)

Finisher media entrance
roll assembly

Upper media
transport roll assembly

Upper media exit
roll assembly

Buffer roll assembly

Media eject
roll assembly

Duplex media
transport roll

assembly

MPF

MPF pick roll

Media transport roll assembly

Tray module transport
roll assembly

Tray 4 transport roll assembly

Pick roll

Feed roll

Separation roll

Tray module transport
roll assembly

Fuser

2nd transfer
roll assembly

Registration
roll assembly

Tra y 3

Tra y 1

Tra y 2

Tra y 4

Tra y 2

Tra y 2

Tra y 3

Tra y 4

Booklet maker unit
(optional)

Finisher

(optional)

TTM

1TM (optional)

3TM (optional)

Lower media exit
roll assembly

Booklet media
transport roll assembly

Booklet media
entrance roll assembly

Booklet media
exit roll assembly

Booklet folding
roll assembly

1-6 MFP Service Manual

MFP sensors

ADF and Scanner

Sensor (bridge
unit media exit)

Sensor (diverter gate)

Sensor (finisher
media entrance)

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Sensor (upper
media exit)

Sensor (standard
bin media full)

Sensor (fuser exit)

Sensor (media on belt)

Sensor (duplex wait)

MPF

Sensor (tray 1 feed out)

Sensor (tray 2 feed out)

Sensor (tray 3 feed out)

Sensor (tray 4 feed out)

Sensor (tray 2 feed out)

Sensor (tray 2 feed out)

Sensor (tray 3 feed out)

Sensor (tray 4 feed out)

Sensor (bridge unit
media entrance)

Fuser

Sensor (registration)

Tra y 1

Tra y 2

Tra y 3

Tra y 4

Tra y 2

Tra y 2

Tra y 3

Tra y 4

Booklet maker unit
(optional)

Finisher

(optional)

TTM

1TM (optional)

3TM (optional)

Sensor (upper
media bin full)

Sensor (lower
media exit)

Sensor (buffer path)

Sensor (compiler
media in)

Sensor (booklet
media entrance)

Sensor (booklet
media exit)

Functions of main components

• Media tray assembly

• Media feed unit assembly

• MPF

• Xerographics

• Transfer

• Fuser

• Drive

• Electrical components and rolls

Media tray assembly

It is necessary to adjust the media tray rear guide and media tray end guide of the media tray assembly to match
the media size.

General information 1-7

7510-XXX

Rear media guide

The rear media tray guide assembly can be adjusted to different media sizes by moving it to the front or rear. The
rear guide come into contact with the media and hold it in position.

End guide

The media tray assembly is designed so it can adapt to the media length in the media feed direction by moving the
end guide to the left or right.

Bottom plate

The force pushing up the bottom plate is transmitted by the driving force of the motor on the media feed unit
assembly. The bottom plate is pushed up by the rotation of the lift up shaft, which causes the supplied media to
come in contact with the pick roll.

Media tray assembly

Rear media guide

Bottom plate

End guide

Detection of media size

The media size set for the media tray assembly is transmitted to the switch (media size) by moving these guides.
The media size is detected by the on/off information of these switches.

Media feed unit assembly

Since tray 1 and tray 2 are functionally equivalent in terms of the switch (media size), sensor (media out),
sensor (media level) and sensor (pre-feed), only the components of one tray are described here.

The media feed unit assembly is a mechanical unit supplying media from the media tray assembly to the printer.
The driving force, from the media feed lift motor on the media feed unit assembly, is transmitted to the three media
feed rolls to feed media.

When the pick roll picks up media, the remaining media decreases, and the actuator of the sensor (media level)
lowers accordingly. When the sensor (media level) detects the lowering, the media feed lift motor is activated to lift
the lift up shaft and the bottom plate accordingly. Thus, the remaining media is ready to be fed.

1-8 MFP Service Manual

7510-XXX

Media feed/lift motor

This motor is activated to feed media and to lift the bottom plate. When feeding media, it rotates forward to drive
the pick roll. When lifting the bottom plate, it rotates reversely to drive the tray module gears to lift the lift up
shaft.

Switch (media size)

This switch (media size) sets the size of media supplied from each media tray assembly. A signal indicating the
media size is transmitted as a voltage to the printer engine card assembly.

Sensor (media out)

If media runs out in a media tray assembly, the actuator lowers and the actuator flag, unlocks the sensing area
of the sensor (media out). The sensor light is transmitted. When the sensing area is blocked (media is present),
the signal is off.

Sensor (media level)

This sensor detects by the actuator position whether media in the media tray assembly is lifted. When the flag of
the actuator unblocks the sensing area of the sensor (media level), the sensor detects that the media has been
lifted.

Sensor (feed-out)

This sensor detects the media just after it is fed from the media feed unit. When the flag of the actuator unblocks
the sensing area of the sensor (feed-out), the sensor detects that the media is present. The sensor (feed-out) is
also used as a relay sensor along the media path up to the sensor (registration) in order for the engine to
monitor media location.

Media feed lift motor

Sensor

Sensor
(media out)

Media feed unit asm

(media level)

Switch
(media size)

Multi-purpose feeder (MPF)

Front

Tray asm

General information 1-9

7510-XXX

The MPF is a mechanical unit suppling media to the printer. The driving force from the MPF/transport drive
motor is transmitted to the MPF feed roll to feed media.

MPF feed roll

The MPF feed rolls feed media set on the MPF and into the printer.

MPF pick solenoid

The MPF pick solenoid transmits the driving force from the MPF/transport drive to the MPF feed rolls.

Sensor (MPF media out)

The sensor (MPF media out) detects whether media is present on the MPF.

Sensor (MPF media width)

The MPF side guides detects the width (length in the main scanning direction) of media on the MPF.

MPF pick solenoid

MPF pick rolls

Media size

The following table details the standard paper and envelope sizes supported by the Lexmark X945e MFPs and
options.

Media Width Length

A4 210 mm 297 mm
A5 148 mm 210 mm
A3 297 mm 420 mm
JIS B5 182 mm 257 mm
JIS B4 257 mm 364 mm
Letter 8.5 inches 11 inches
Tabloid 11 inches 17 inches
Legal 8.5 inches 14 inches
Executive 7.25 inches 10.5 inches
Folio 8.5 inches 13 inches

Sensor (MPF media width)

Sensor (MPF media out)

1-10 MFP Service Manual

Media Width Length

Statement 5.5 inches 8.5 inches
Universal

MPF only

7 3/4 Envelope 98.4 mm

10 Envelope 104.8 mm

DL Envelope 110 mm

CS Envelope 162 mm

Other Envelope 89 mm to 297 mm

Transparencies (Letter and A4) 8.5 inches

140 to 297 mm

5.5 to 11.7 inches
105 to 305 mm

4.1 to 12 inches

3.875 inches

4.12 inches

4.33 inches

6.38 inches

3.5 to 11.7 inches

210 mm

98.4 to 432 mm

3.9 to 17 inches
148 to 482 mm

5.8 to 19 inches

190.5 mm

7.5 inches

241.3 mm

9.5 inches
220 mm

8.66 inches
229 mm

9.01 inches

98.4 to 431 mm

3.8 to 17 inches
11 inches

297 mm

7510-XXX

Registration

Sensor (registration)

The sensor (registration) is located just before the registration roll assembly can detect whether media exists in
the registration path.

Sensor (transparency detect)

This sensor is used to detect transparency media in order to automatically adjust feed speed, charge biases and
fuser temperatures.

Registration clutch

The registration clutch transmits the drive force of the K developer/transport drive motor to the registration roll
assembly.

Media transport roll assembly

The media transport roll assembly feeds paper from tray 2, tray 3 and tray 4 toward the registration roll
assembly.

Registration roll assembly

General information 1-11

7510-XXX

The registration roll assembly feeds the media at the precise moment to ensure that printed images are
precisely placed. The registration roll assembly feeds media from all trays to the transfer belt.

Registration
clutch

Media transport roll assembly

Sensor
(transparency detect)

Sensor
(registration)

Transfer

Sensor (CMY transfer
roll retract HP)

CMY transfer roll
retract motor assembly

Transfer belt drive motor assembly

This motor is used to rotate the transfer belt.

1st transfer rolls (C,M,Y,K)

Transfer belt
drive motor

Transfer belt
cleaning assembly

Transfer belt
steering motor

Transfer belt cleaning assembly

This assembly is used to remove residual toner images from the transfer belt after 2nd transfer and before the
next print cycle.

1-12 MFP Service Manual

7510-XXX

Transfer belt unit assembly

The transfer belt unit assembly contains the four 1st transfer rolls; these 1st transfer rolls are referred to as the
CMYK transfer rolls. The CMYK transfer rolls are positively charged to remove the developed toner image from
the four drums. The negatively charged toner image is attracted by positive charges on the surface of the
transfer belt. Thus, the toner image is transferred from the drum surface to the transfer belt surface. During black
(K) only, operation the CMY transfer rolls are retracted to reduce wear on the transfer belt surface and CMY
drums.

Transfer belt steering motor

This motor is used to ensure that the transfer belt is properly tracking. If the transfer belt starts to track off-center
then the transfer belt steering motor will activate to keep the transfer belt centered and tracking properly.

2nd transfer roll assembly

The 2nd transfer roll assembly applies positive charges to the rear surface of the media when the media passes
between the 2nd transfer roll assembly and the transfer belt. The negatively charged toner image is attracted by
positive charges on the surface of the media. Thus, the toner image is transferred from the transfer belt surface
to the media surface.

2nd transfer roll retract motor

The 2nd transfer roll retract motor is used to retract the 2nd transfer roll assembly when printing processes are
not occurring.

General information 1-13

7510-XXX

Sensor (2nd transfer roll HP)

The sensor (2nd transfer roll HP) is used to detect the home position of the 2nd transfer roll assembly.

Sensor (2nd transfer
roll retract HP)

Printhead assembly

The printhead scans the four drum surface with four laser beams. It consists of four components: laser diode
(LD) card assembly, printhead motor, polygon mirror, and four start of scan card assemblies.

2nd transfer
roll assembly

Transfer belt

2nd transfer roll
retract motor

1. LD card assembly – generates a laser beam with the four LDs. The beam is turned on or off according to
a print data signal. The printhead contains 4 LD card assemblies for the colors CMY & K.

2. Printhead motor/polygon mirror – the polygon mirror is mounted to the shaft of the printhead motor, and is
rotated at a high speed by the printhead motor. The mirror rotation shifts the incidence and reflection
angles of a laser beam to scan the laser beam in the drum axial direction. The laser beam reaches the
polygon mirror as it passes through multiple lenses, mirrors, and windows. The laser beam then arrives at
the drum surface.

3. SOS card assembly – when a laser beam hits the SOS sensor on the SOS card assembly, the beam is
converted to an electrical signal (SOS signal), and detects the initial position where a scan starts on each
line.

When a laser beam is scanned across the drum surface from one end to the other while turning on and off the
beam, one line of latent image is created. If the scanning by the laser beam is repeated while rotating the drum,
a two-dimensional image is created. The resolution in the scanning direction (from right to left) is determined by
the rotational speed of the printhead motor, depending on how quickly the laser is adjusted. The resolution in the
process direction (from top to bottom) is determined by the rotational speed of the printhead motor. (The higher
the scanning speed becomes, the sooner the scanning of the next row can be started.)

1-14 MFP Service Manual

Conceptual diagram of an image created by scanning

7510-XXX

Printhead

General information 1-15

7510-XXX

Y Laser Path

Polygon Mirror

Y drum

Sensor
(Y start of scan)

M Laser Path

Polygon Mirror

M drum

Sensor
(M start of scan)

1-16 MFP Service Manual

7510-XXX

C drum

Sensor
(C start of scan)

C Laser Path

Polygon Mirror

K drum

K Laser Path

Sensor
(K start of scan)

Polygon Mirror

Printhead shutter

The printhead shutter tightly covers the slit glass through which laser beams from the printhead pass to write the
four drums. To prevent the seal glass from becoming dirty, the shutter stays closed except when laser beams
are written onto the drums.

The printhead shutter motor assembly is used to prevent contamination from obstructing the printhead slit
glasses. The printhead shutters for yellow, magenta, cyan and black are opened or closed simultaneously by the
printhead shutter motor assembly.

General information 1-17

7510-XXX

Fuser

Fuser cooling fan

Heat roll

Sensor (fuser exit)

Pressure

Thumb
screws

belt

Heat roll

The heat roll is a hollow metal tube with a coated surface. This tube is heated by the inner heater lamp. The heat
is applied to the media passing between the heat roll and pressure roll, fusing the toner on the media.

1-18 MFP Service Manual

7510-XXX

Pressure belt

The pressure belt is used to apply pressure to the media surface for fusing. Pressure is applied to the media
between the pressure belt and heat roll, pressing the melted toner against the media.

Heater lamps

Thermistat

Front
thermister

Rear
thermister

Heater lamp

The heater lamp is a quartz glass tube containing a heater coil. A terminal is mounted to the end of the heater
rod via a harness. Two heater lamps are used: the main heater lamp to heat the entire heat roll, and the sub
heater lamp to heat the central portion of the heat roll.

Thermostat

If the heat roll temperature exceeds the preset temperature, the thermostat cuts off the circuits of the main
heater lamp and sub heater lamp.

Front thermistor

The front thermistor monitors the surface temperature of the media-feed portion of the heat roll to control on/off
of the main heater lamp and sub heater lamp.

Rear thermistor

Exit

The rear thermistor monitors the surface temperature at the rear side of the heat roll to switch the heater lamp to
on.

Fuser exit sensor

The fuser exit sensor detects the arrival of media at the detection point in the exit area of the fuser, and also
detects the ejection of media from this point.

Standard media
exit roll assembly

Standard media
exit shift motor

The standard media exit ejects printed media from the printer to the standard bin 1.

Sensor
(standard bin full)

General information 1-19

7510-XXX

Standard media exit roll assembly

The media exit roll assembly feeds printed media from the fuser to the standard bin.

Sensor (standard bin full)

The sensor (standard bin full) detects whether the standard bin is full by moving the actuator up and down.

Standard media exit shift motor

The standard media exit shift motor allows the standard media exit roll assembly to shift back and forth to perform
off-set sorting.

Duplex diverter gate

The duplex diverter gate switches the media transport path. When the duplex diverter gate is lifted, media is fed
to the standard bin. When it is lowered, media is fed to the duplex.

Inverter
forward
clutch

Standard media exit
roll assembly

Drive

Inverter
reverse
clutch

Duplex
diverter gate

Duplex
drive
motor

Duplex media
transport roll assembly

Duplex diverter
solenoid

Switch (duplex left
door interlock)

Sensor
(duplex wait)

K developer/transport drive motor assembly

The K developer/transport drive motor is a DC motor that drives the K developer unit assembly, registration roll,
2nd transfer roll, fuser and standard media exit rolls.

MPF/transport drive motor

1-20 MFP Service Manual

7510-XXX

The MPF/transport drive motor is a stepper motor that drives the MPF unit assembly and media transport roll.

K developer/transport
drive motor assembly

MPF/transport
drive motor

CMYK PC cartridge drive motor assembly

The CMYK PC cartridge drive motor assembly uses dual DC brushless motors that drive the four drums in the
four PC cartridges.

K drive motor

CMY drive motor

General information 1-21

7510-XXX

CMY developer drive motor assembly

The CMY developer drive motor assembly uses a DC brushless motor to drive the three color developer unit
assemblies.

K developer clutch

This clutch is used to engage the K developer unit assembly and is driven by the K-developer transfer drive
motor assembly.

CMYK toner add motor assembly

Y toner add motor

M toner add motor

C toner add motor

K toner add motor

K developer
clutch

CMY developer drive
motor assembly

1-22 MFP Service Manual

Y toner add assembly

M toner add assembly

C toner add assembly

K toner add assembly

7510-XXX

The CMYK toner add motor assembly consists of 4 separate DC motors. Each color of toner has its own motor
that is used to rotate the toner auger inside the toner cartridge and drive the auger inside the toner add
assembly.

Waste toner agitator motor assembly

Waste toner agitator
motor assembly

Switch (waste toner

Sensor (waste toner
cartridge full)

cartridge interlock)

The waste toner agitator motor assembly is used to rotate an auger inside the waste toner cartridge in order to
distribute collected waste toner evenly to prevent spillage and overflow.

Electrical components and controller

Switch (main power)

Turning on/off the switch, power supplies/cuts off the main power of the printer.

Finisher AC output

Supplies power to the finisher from the AC drive card assembly.

Switch (printer front door interlock) and switch (printer left door interlock)

The switch is a safety switch to cut off a 24 VDC power supply from the LVPS card assembly to the high volt
power supply (HVPS) card assembly, printer engine card assembly and to the dual motor assembly, while the
printer front door assembly and the printer left door assembly are open.

Switch (printer left lower door interlock)

The switch (left lower door interlock) detects open or close of the printer left lower door assembly.

Fuser cooling fan

The fuser cooling fan discharges air from the printer to prevent excessive temperature increase.

AC drive card assembly

The AC drive card assembly accepts the main source voltage and distributes it to secondary power supplies and
circuit boards. It also contains the fuser relay to feed/cut off AC power to the heater lamps of the fuser unit
assembly.

General information 1-23

7510-XXX

5V LVPS card assembly

The LVPS card assembly generates low voltages 5V for logic circuits, 5 V for laser diodes from AC power.

24V LVPS card assembly

The LVPS card assembly generates 24 V for motors/clutches from AC power.

CMYK transfer roll HVPS card assembly

The CMYK transfer roll HVPS card assembly generates AC power and feeds it to the CMYK transfer rolls inside
the transfer belt unit assembly.

Developer roll HVPS card assembly

The HVPS card assembly generates AC power and feeds it to the four developer rolls, the transfer belt unit
assembly and the 2nd transfer roll assembly

Charge roll HVPS card assembly

The HVPS card assembly generates AC power and feeds it to the four charge rolls.

Charge roll HVPS
card assembly

CMYK transfer
roll HVPS
card assembly

Developer roll
HVPS card assembly

1-24 MFP Service Manual

7510-XXX

Upper printer engine card assembly

The upper printer engine card assembly controls printing operation based on the communication with the RIP
card assembly and optional peripherals. It also controls toner dispense, erase lamps and fuser control.

Lower printer engine card assembly

The lower printer engine card assembly controls printing operation based on the communication with the RIP
card assembly and on sensor/switch information. It also controls many of the drive motors, clutches and
solenoids.

RIP card assembly

The RIP card assembly connected to the printer engine card assembly controls the entire system as well as the
printhead operations.

General information 1-25

7510-XXX

Control

Media size control

Media tray assembly feeding

The following table gives the states (on/off) of the switches on the switch (media size), corresponding to the
media sizes of the media tray assembly.

Note: The switches on the switch (media size) are denoted by “S/W2”, “S/W4”, “S/W3”, “S/W5”, and “S/W1”
respectively from the left side.

Media size

No media tray assembly Off Off Off Off Off

5.5" X 8.5"SEF/A5 SEF Off Off On Off Off
B5 SEF Off Off On On On

8.5" X 13"SEF Off On Off On Off

8.5" X 14"SEF Off On Off On On
A4 SEF Off On On Off Off

8.5" X 11"SEF Off On On Off On
A4 LEF On Off On Off Off
A3 SEF On Off On On Off

B5 LEF/executive LEF On On Off Off On

8K SEF(TFX/GCO) On On Off On Off

B4 SEF On On Off On On

8.5" X 11"LEF On On On Off Off

16K LEF(TFX/GCO) On On On Off On

11" X 17"LEF On On On On On

Printhead control

Analog switch

S/W1 S/W2 S/W3 S/W4 S/W5

Digital
switch

Rotation of printhead motor

The on/off control of the printhead motor is performed according to the mode of operation as shown below.

Operation mode PRINTHEAD motor on/off

Standby mode Always off
Print mode Turns on upon receiving the signal from the controller,

Sleep mode Always off

1-26 MFP Service Manual

and turns off after a preset time has passed from the
end of printing. Also turns off if a print command is not
received within 30 seconds from the reception of the
signal.

7510-XXX

Determination of printhead ready

The printhead goes into ready state after the specified period passes since the reception of the printhead MPA
start signal and the SOS cycle exceeds the reference value.

Printhead reference value

Printhead reference value Description

Ready reference value SOS signal interval (equivalent to 98% or more of the rated RPM of the

Fail reference value SOS signal interval (less than 98% of the rated rpm of the printhead

Fuser control

Fuser control method

The on/off control of the main/sub heater lamps is performed based on the fuser control temperature. The fuser
transmits between the five states (warm up, ready, standby, print, and low power) depending on the heat roll
surface temperature or printer conditions.

The fuser temperature control starts when the fuser ready in the AC drive card assembly is turned on after a
preset time period has passed from power on. If a failure occurs, the heater lamps are turned off, the fuser ready
is turned off, and then the fuser temperature control is stopped.

Main/sub heater lamps on/off control

The front and rear thermistors detect the heat roll surface temperature (fuser temperature) to regulate the
temperature at the target control temperature by turning on or off the main/sub heater lamps.

Fuser warm-up

The fuser warm-up starts at the time of power on, interlock open or close, jam reset, or return from the low power
mode, and ends when the ready temperature is attained, when a failure occurs, or when executing diagnosis.

printhead motor)

motor)

General information 1-27

7510-XXX

Xerographic process during a print cycle

Fuser

Transfer belt

K toner

C toner M toner

Y toner

Cleaning roll

2nd transfer
roll assembly

Registration roll

K transfer roll

K

Erase Lamp

C transfer roll

Charge roll

M transfer roll

C

Printhead

Cleaning blade

Photo conductor drum

M

Developer
unit

Sensor (ATC)

Y transfer roll

Y

Transfer belt
cleaning
assembly

1-28 MFP Service Manual

7510-XXX

Charge

The Charge Roll places a uniform negative electrostatic charge on the surface of the drum. The drum surface is
made of a photoconductive material that holds an electrical charge as long as the drum remains in darkness.
Light striking the drum discharges the surface charge.

Charge roll

(-VDC)

DRUM

Photoconductive
Surface

Conductive Tube

Ground

The charge roll is a conductive roll that is positioned slightly above the surface of the drum. The HVPS supplies
the charge roll with two voltages; a negative DC charge voltage and an AC discharge voltage that is used for
electrically cleaning the drum.

Drum Surface
Image

HVPS

(-VDC)

Ground

Drum Surface
Voltage

-VDC value

0V

Photoconductive
Surface

Conductive Tube

Charge roll

DRUM

Ground

(-VDC)

HVPS

(-VDC)

Ground

Drum Surface
Image

Drum Surface
Voltage

-VDC value

0V

General information 1-29

7510-XXX

Exposure

The Printhead generates a beam of laser light. Image data received from the RIP card assembly modulates this
beam, turning it on and off according to image information that is received from the host computer and software.

Through the use of a series of rotating and stationary mirrors within the Printhead, the beam scans the negative
charged drum surface. Whenever the print controller sends a command to print a black pixel, the laser switches
on long enough to shine onto the drum at a single pixel point. That point is now discharged and slightly less
negative than the surrounding negative charge. The less negative areas are considered positive. This
discharge/no discharge process creates an invisible, electrostatic image on the surface of the drum. This image
is called a latent image.

Modulated
Laser Beam

Printhead

DRUM

Drum Surface
Image

Laser Beam

Invisible Latent Image

Drum Surface
Voltage

Laser Beam

Discharge
Level

0V

Development

The toner contained within the PC Cartridge has a magnetic property that causes it to adhere to the Magnetic
Roll. The Metering Blade spreads the toner into a very thin layer on the Magnetic Roll. Friction between the
Magnetic Roll and the CM Blade generates a small electrical charge that is transferred to the toner.

The surface of the Magnetic Roll is made up of a thin sheet of conductive material. The HVPS supplies the
Magnetic Roll with two voltages: a DC voltage and an AC voltage. The DC voltage is used to transfer toner from
the Magnetic Roll to the surface of the drum. The AC voltage agitates the toner on the Magnetic Roll, making
toner transfer easier.

The Magnetic Roll maintains a negative DC electrical potential. Negative charged areas of the drum have a
lower electrical potential, or higher relative negative value than the Magnetic Roll. Discharged areas of the drum
have a higher electrical potential, or lower relative negative value, than the Magnetic Roll. A discharged point on
the surface of the drum now appears less negative in relation to the negative charge on the Magnetic Roll.

1-30 MFP Service Manual

7510-XXX

The toner adhering to the Magnet Roll is always in contact with the drum surface. When a less negative point on
the drum (a discharged area) comes in contact with the more negative charged toner on the Magnet Roll, toner
transfers from the Magnet Roll to that point on the drum. There is now a visible toner image on the drum surface.
The image is called a developed image.

Magnet roll

Augur

DRUM

Transfer

Magnetic
Roll

Metering
Blade

Toner

Drum Surface
Image

Visible Developed Image

-VDC

HVPS

Drum Surface
Voltage

0V

Toner at

-VDC Developer
Bias value

Discharge
Level

As the paper travels between the 2nd transfer Roll and the transfer belt surface, the Transfer Roll applies a
positive charge to the back of the printing paper. This positive charge transfers the negative charged toner
image from the transfer belt to the top surface of the paper. The toner image is now on the paper and the paper

General information 1-31

7510-XXX

is now stuck to the transfer belt due to the relative electrical differences between the negative electrical charge
of the inner conductive layer of the drum and the positive electrical charge of the paper.

HVPS

-VDC

-VDC

DRUM

Transfer roll

Sheet of paper

Cleaning

The Cleaning Blade removes any toner that remains on the drum after the transfer process. The toner that the
Cleaning Blade removes is collected inside the sealed PC Cartridge and reused.

Used Toner

Cleaning Blade

-VDC

Charge roll

Discharge

At both the start and the end of each individual printer cycle, the erase lamps electrically clean the drum. The
light emitted removes any residual DC charge that was left from the previous print cycle.

1-32 MFP Service Manual

DRUM

7510-XXX

At the beginning of each individual printer cycle, the Printhead scans the surface of the drum, further discharging
any residual DC charge that may be left on the drum.

Erase lamp LED array

DRUM

Ground

Auto density sensing

Image density
sensor assembly

The image density sensor assembly uses a reflection type sensor that detects a pre-placed toner patch and
image on the transfer belt and outputs pulses when the central line of the patch image aligns with the central line
of the detector. The sensor outputs pulses at the timing the patch image passes the sensor. Therefore,
observing changes of intervals at which pulses are output leads to color mis-registration detection. If no color
mis-registration occurs, pulses are output at regular intervals.

General information 1-33

7510-XXX

Document scanning

The document scanning section of this machine consists of a scanner that reads a single-sheet document
placed on the platen glass and a document feeder that can transport a multiple-sheet document and flip the
sheets for two-sided scanning.

This ADF employs a constant velocity transport system that scans images by feeding the document at a
constant speed over the specified position (scan position) where the carriage (full/half rate carriage) of the
scanner unit assembly is fixed.

ADF Scan position

Platen registration point

Full rate carriage

Half rate carriage

Document scanning at platen

Shown below is the operational overview of document scanning at the platen.

Exposure lamp

Lens

CCD
Image
sensor

1st mirror

CCD

Sensor (scanner HP)

Half rate carriage

3rd mirror

2nd mirror

Rear

Scanner drive motor assembly

The full rate carriage and half rate carriage travel to read the document.

1-34 MFP Service Manual

Sensor (scanner HP)

Full rate carriage

The exposure lamp is installed on the full rate carriage. As the full rate carriage travels, the document on the
platen glass is scanned and exposed with the exposure lamp.

In conjunction with the full rate carriage, the half rate carriage travels half of the stroke of the full rate carriage.

The optical image of the exposed document is reflected by the scanner 1st mirror of the full rate carriage and
directed to the scanner lens via the scanner 2nd mirror and the scanner 3rd mirror of the half rate carriage.

The image data is read with the scanner CCD image sensor assembly.

Document scanning at ADF

Shown below is the document feed path from the ADF.

7510-XXX

ADF Feed roll

Sensor (pick roll position HP)

Sensor (ADF sheet through)

Sensor (ADF pre-registration)

Sensor (ADF APS 1)
Sensor (ADF APS 2)
Sensor (ADF APS 3)

ADF transport roll assembly

Sensor (ADF registration)

ADF registration roll assembly

Scan position

ADF feed-out roll assembly

A document sheet set in the document tray assembly is fed through the ADF feed roll, ADF pick roll, and ADF
registration roll assembly. The document image is scanned at the scan position, and the document sheet is
ejected through the ADF feed-out roll assembly and the ADF exit roll assembly. For a duplex document sheet,
the image on side 1 is scanned at the scan position and then the document sheet is inverted and fed to the ADF
transport roll assembly again.

Described below is the overview of the steps before document scanning and that of simplex and duplex
document scanning modes.

Sensor (ADF document set)

ADF Pick roll

ADF exit roll assembly

Sensor (document tray length 1)
Sensor (document tray length 2)
Sensor (document tray length 3)

Inverter gate

Sensor (inverter)

Sensor (document
tray length 1)

Sensor (document tray length 2)

Setting a document

When a document is set on the document tray assembly and the lead edge is pushed into the tray until it stops,
the ADF document set actuator moves to place the sensor (ADF document set) in the unshielded (unblocked)
state. Then the machine recognizes that the document has been set properly, turning on the document set LED.

Preparation for feed

Pressing the start button with the document set in the document tray will start feeding the document.

First the pick roll moves down and presses the document on the document tray to enable document feed.

The pick roll moves down with the normal rotation of the pick roll position motor assembly and it moves up with
the reverse rotation of the pick roll position motor assembly.

Upon completion of document feed, the pick roll returns to the normal (raised) position.

General information 1-35

7510-XXX

Pre-feed

In the pre-feed step, a document sheet is fed from the Feed roll to the ADF transport roll assembly. To correct
the skew, side1 of the document sheet is thrust against the ADF transport roll assembly rotating in the reverse
direction, and side2 is thrust against the ADF transport roll assembly at rest.

With the pick roll at the down position (see Preparation for feed), the ADF feed motor assembly rotates in the
reverse direction (CCW direction) to drive the pick roll and Feed roll. The pick roll feeds the top document sheet
on the document tray toward the Feed roll. The Feed roll nipped by the separation roll feeds the document
sheets (from the pick roll) one by one. When the sensor (ADF sheet through) detects a document sheet, the
machine recognizes that feed of the first document sheet is complete.

When the sensor (ADF pre-registration) detects a document sheet, the ADF feed motor assembly slows down.
As a result, the document sheet stops against the ADF transport roll assembly, correcting the skew.

Feed roll

ADF transport roll assembly

Pre-registration

In the pre-registration step, the document sheet (fed to the ADF transport roll assembly in the pre-feed step) is
fed to the ADF registration roll assembly, and then the lead edge of the document sheet is fed from the ADF
registration roll assembly, to the scan feed reference position (Wait Position) located upstream from the scan
position, where the document stops. Thus, registration of the lead edge of the document is performed.

When the document sheet is fed to the ADF transport roll assembly, the ADF feed motor assembly changes its
rotational direction to the normal direction (CW direction) to drive the ADF transport roll assembly. The ADF
transport roll assembly feeds the document sheet toward the ADF registration roll assembly. When the sensor
(ADF pre-registration) detects the document sheet, the ADF registration motor rotates in the reverse direction
(CCW direction) to drive the ADF registration roll assembly, ADF feed-out roll assembly, and ADF exit roll
assembly. The ADF registration roll assembly feeds the document sheet (fed from the ADF transport roll
assembly) to the scan feed reference position.

When the sensor (ADF registration) detects the document sheet, the ADF feed motor assembly slows down.
From this moment on, the ADF feed motor assembly and ADF registration motor decelerate continuously until
the document stops in the predetermined amount of time. At this point, the document sheet stops with the lead
edge nipped by the ADF registration roll assembly at 15 mm from the top. This is when the document sheet
stops at the scan feed reference position.

1-36 MFP Service Manual

7510-XXX

ADF transport roll assembly

ADF registration roll assembly

Scan control

Scanning of the image illuminated with the exposure lamp of the full rate carriage is controlled by changing the
feed speed according to the copy magnification.

The document sheet stopping at the scan feed reference position is then fed to the scan position when the scan
signal is sent from the main unit of the machine after the predetermined time lapse following the paper detection
at sensor (ADF registration). Upon receipt of the scan signal, the ADF feed motor assembly rotates in the normal
direction (CW direction) to drive the ADF transport roll assembly and the ADF registration motor rotates in the
reverse direction (CCW direction) to drive the ADF registration roll assembly, ADF feed-out roll assembly, and
ADF exit roll assembly. Each motor gradually accelerates up to the specified speed. When the document sheet
passes the scan position at the specified speed, the images on the document sheets are exposed by scanning
with the exposure lamp of the full rate carriage, and are read by the CCD image sensor assembly.

When the predetermined period of time has elapsed since the document sheet ceased to be detected by the
sensor (ADF pre-registration), the ADF feed motor assembly stops.

When the predetermined period of time has elapsed since the document sheet passed through the sensor (ADF
inverter), the ADF registration motor stops.

Inversion

In the inversion step, the document sheet is inverted at the inverter gate and fed to the ADF transport roll
assembly again. By thrusting the document sheet against the ADF transport roll assembly at rest, the skew of
the inverted document sheet is corrected.

This enables scanning of a duplex document.

When the predetermined period of time has elapsed since the document sheet passed the sensor (inverter), the
ADF registration motor starts rotating in the normal direction (CW direction) to drive the ADF exit roll assembly in
the direction opposite to the exit direction. Thus, the document sheet is inverted and fed to the ADF transport roll
assembly again.

When the sensor (ADF pre-registration) detects the document sheet, the ADF registration motor decelerates
until it stops.

The inverter gate is so designed that the document sheet fed toward the exit can pass through it smoothly. When
the trail edge of the document sheet has passed through the inverter gate, it closes the downstream document
feed path. Thus the document sheet is fed over the inverter gate up to the ADF transport roll assembly when fed
backward, thereby inverting the document sheet.

General information 1-37

7510-XXX

ADF exit roll assembly

Inverter gate

Document

Simplex document

For two simplex document sheets, feed is performed in the following sequence:

1. The first document sheet is fed to the ADF transport roll assembly. (see Pre-feed)

2. The document is fed to the ADF registration roll assembly, and then fed to the scan feed reference
position. (see Pre-registration)

3. The document sheet is fed at the feed speed corresponding to the selected magnification, and the image
on it is scanned with the exposure lamp at the scan position. (see Scan control)

4. As the image is scanned, the document sheet is fed and ejected by the ADF feed-out roll assembly and
ADF exit roll assembly that are driven by the ADF registration motor turning in the reverse direction (CCW
direction).

5. When the trail edge of the first document sheet has passed through the sensor (ADF pre-registration), the
feed of the second document sheet starts.

1-38 MFP Service Manual

7510-XXX

Sensor (ADF pre-registration)

2nd documant

1st document

Duplex document

The ADF scans the image on Side 1 (side facing up when set on the tray), inverts the document sheet, scans
the image on Side 2 (side facing down when set on the tray), and then ejects the document sheet while inverting
it.

Therefore, the duplex document sheet is ejected with Side 2 up as with the simplex document sheet.

For two simplex documents, feed is performed in the following sequence.

1. The first document sheet (Side 1) is fed to the ADF transport roll assembly. (see Pre-feed)

2. The document sheet (Side 1) is fed to the ADF registration roll assembly and then fed to the scan feed
reference position. (see Pre-registration)

3. The document sheet (Side 1) is fed at the feed speed corresponding to the selected magnification, and the
image is scanned with the exposure lamp at the scan position. (see Scan control)

4. As the image is scanned, the document (Side 1) is fed by the ADF feed-out roll assembly and ADF exit roll
assembly that are driven by the ADF registration motor rotating in the reverse direction (CCW direction).
When the trail edge of the document has passed through the sensor (inverter), the ADF registration motor
changes its rotational direction to the normal direction (CW direction) to drive the ADF exit roll assembly in
the opposite direction. Thus, the document sheet is inverted and fed to the ADF transport roll assembly
again.

5. When the sensor (ADF pre-registration) detects the lead edge of the document sheet (Side 2), the inverter
solenoid assembly is turned on to release the nipped ADF exit roll assembly and exit pinch roll. If these
rolls are not released, the lead edge of the document sheet (Side 2) reaches the ADF exit roll assembly
before the trail edge of the document sheet (Side 2) leaves the ADF exit roll assembly when the document
sheet (Side 2) is long in the slow scanning direction.

6. The document sheet (Side 2) is fed to the ADF registration roll assembly and then fed to the scan feed
reference position. (see Pre-registration)

7. The document sheet (Side 2) is fed at the feed speed corresponding to the selected magnification, and the
image on it is scanned with the exposure lamp at the scan position. (see Scan control)

8. When the trail edge of the document sheet (Side 2) passes through the sensor (ADF pre-registration), the
inverter solenoid assembly is turned off to nip the ADF exit roll assembly and exit pinch roll.

9. As the image is scanned, the document sheet (Side 2) is fed by the ADF feed-out roll assembly and ADF
exit roll assembly that are driven by the ADF registration motor turning in the reverse direction (CCW
direction). When the trail edge of the document sheet (Side 2) has passed through the sensor (inverter),
the ADF registration motor changes its rotational direction to the normal direction (CW direction) to drive
the ADF exit roll assembly in the opposite direction. Thus, the document sheet (Side 2) is inverted and fed
toward the ADF transport roll assembly again.

10. At the same time, the ADF feed motor assembly rotates in the normal direction (CW direction) to drive the
ADF transport roll assembly, thus feeding the document sheet (Side 1) toward the exit.

General information 1-39

7510-XXX

11. When the sensor (ADF pre-registration) detects the lead edge of document sheet (Side 1), the inverter
solenoid assembly is turned on to release the nipped ADF exit roll assembly and exit pinch roll, and the
ADF registration motor decelerates and stops.

12. After the predetermined time, the ADF registration motor starts rotating in the reverse direction (CCW
direction) to drive the ADF registration roll assembly and ADF feed-out roll assembly in the exit direction in
order to feed the document sheet (Side 1).

13. When the trail edge of the document sheet (Side 1) passes the sensor (ADF pre-registration), the inverter
solenoid assembly is turned off to nip the ADF exit roll assembly and exit pinch roll, thereby ejecting the
document sheet with the ADF exit roll assembly.

14. At this timing, the feed of the second document sheet starts.

15. The subsequent steps are the same as those for the first document sheet.

2nd document

1st document (side 2:scan)

2nd document

2nd document

Sensor (ADF
pre-registration)

2nd document

1st document (side 2:scan)

1st document (side1:no scan)

2nd document

1st document (side1:no scan)

1-40 MFP Service Manual

1st document (side1:no scan)

Image data flow

The image date from the document set on the scanner unit assembly or ADF goes through the following
components before it is printed at the Engine section.

7510-XXX

Document

Lens

CCD image sensor

Scanner controller card assembly

Scanner

Engine

RIP card assembly

Printhead assembly

PC cartridge assembly (drum)

General information 1-41

7510-XXX

Drive torque transfer scheme

ADF feed motor assembly

The rotational force of the ADF feed motor assembly is transferred to each document feeding roll as shown
below.

ADF feed motor assembly

ADF drive belt

Feed drive rear pulley 14/32/37

Transport roll drive belt

Transport roll drive
gear/pulley 20/50T

Transport roll drive gear 20T

Transport roll assembly

Feed/pick drive gear 20T

Feed/pick drive
shaft assembly

Feed roll drive gear 26T

Feed roll Pick roll idler gear 36T

Pick roll drive gear 34T

Pick roll

ADF registration motor

The rotational force of the ADF registration motor is transferred to each document feeding roll as shown below.

1-42 MFP Service Manual

Gear layout

ADF registration motor

Registration roll drive belt

Registration drive
gear/pulley 21/54T

Registration drive belt

7510-XXX

Exit/feed-out drive
pulley 25/28

Exit roll drive belt

Exit roll drive pulley 20T

Exit roll assembly

Feed-out roll assembly

Registration roll
drive gear 28T

Registration roll assembly

General information 1-43

7510-XXX

Feed drive gear/pulley14/32/37T

Feed/pick drive gear 20T

ADF feed motor assembly

Transport roll drive
gear pulley 20/50T

ADF registration motor

Registration main drive
pulley 21/54T

Transport roll drive gear 20T

Registration roll drive pulley 28T

Exit/feed-out drive pulley 25/28

Transport roll assembly

Feed-out roll assembly

Feed roll drive gear 26T

Pick roll idler gear 36T

Exit roll drive pulley 20T

Pick roll drive gear 34T

Pick roll

Exit roll assembly

Registration roll assembly

Feed roll

1-44 MFP Service Manual

Names and functions of components

The sections below describe the functions of main components of the scanner.

Scanner unit assembly

Sensor (platen length APS 1)

Sensor (platen length APS 2)

The document length in the slow scanning direction is detected by a combination of the two reflector sensors.

Switch (platen interlock)

A switch that detects whether the ADF is open and determines the timing of platen document size detection.

Sensor (ADF angle)

A sensor that detects the angle at which the ADF opens and determines the timing of platen document size
detection.

7510-XXX

Scanner drive motor assembly

A stepping motor that drives the full rate carriage and the half rate carriage.

Sensor (scanner HP)

A sensor that detects the HP position of the full rate carriage.

The rear portion of the full rate carriage frame functions as an actuator that shields the sensor (scanner HP) for
detection.

Scanner exposure lamp

A xenon lamp to which the document is exposed.

Exposure lamp PS card assembly

A card that switches on/off the exposure lamp according to the signal from the scanner controller card assembly.

Lens assembly

A kit that consists of a lens used to read the document and a CCD image sensor used to photoelectrically
convert the image data read from the document.

Scanner controller card assembly

A card that controls the scanner section.

Scanner cooling fan

General information 1-45

7510-XXX

A fan that prevents overheating of the scanner controller card assembly and exposure lamp.

Exposure lamp
PS card assembly
(under the carriage)

Scanner cooling fan

Scanner drive motor assembly

Sensor (platen
length APS1)

ADF

ADF angle

length APS2)

actuator assembly

Sensor (platen

Sensor
(ADF angle)

CCD image
sensor

Sensor (scanner HP)

Scanner controller card assembly

Exposure lamp

Lens

Switch (platen interlock)

Sensor (ADF tray length 1)

Sensor (ADF tray length 2)

The document length in the slow scanning direction is detected by a combination of these two sensors.

Sensor (document tray width 1)

Sensor (document tray width 2)

Sensor (document tray width 3)

The document length in the fast scanning direction is detected by the combination of these three sensors
detecting the position of the tray on which the document is set.

Sensor (ADF document set)

A sensor that detects the presence or absence of a document on the ADF document tray.

(Presence: Beam is unshielded (unblocked). Absence: Beam is shielded (blocked).)

Pick roll position motor assembly

A stepping motor that moves the pick roll vertically.

Sensor (pick roll position HP)

A sensor that detects the home position of the pick roll.

1-46 MFP Service Manual

7510-XXX

ADF Document Set LED

An LED that illuminates when a document is set on the ADF Document Tray.

Switch (ADF left cover interlock)

A switch that detects whether the ADF left cover assembly is open.

ADF controller card assembly

A card that controls the ADF unit assembly. The ADF controller card assembly is connected to and controlled by
the Scanner controller card assembly.

Sensor (document set)

Pick roll position motor assembly

Sensor (pick roll position HP)

Switch (left
cover interlock)

Document set LED

Sensor (document tray width 3)

ADF controller card assembly

Sensor (document tray width 1)

Sensor (document tray length 1)

Sensor (document tray length 2)

Sensor (document
tray width 2)

Sensor (ADF APS 1)

Sensor (ADF APS 2)

Sensor (ADF APS 3)

These are sensors that detect the fast-scanning-directional width of the moving document.

Sensor (ADF sheet through)

The ADF sensor (ADF sheet through) is installed immediately downstream from the Feed roll to detect
completion of document feed. (document is present: shielded (blocked); document is absent: unshielded
(unblocked))

Sensor (ADF pre-registration)

General information 1-47

7510-XXX

The ADF sensor (ADF pre-registration) is installed immediately upstream from the ADF transport roll assembly
to detect that the preceding document sheet has left the ADF transport roll assembly, triggering the pre-feed of
the next document sheet.

Sensor (ADF registration)

The sensor (ADF registration) is installed upstream from the ADF registration roll assembly to detect that the
preceding document sheet has left the ADF registration roll assembly, triggering the pre-registration of the next
document sheet.

Sensor (ADF inverter)

The sensor (ADF inverter) is installed immediately downstream from the ADF feed-out roll assembly to detect
the ejection of a document sheet.

ADF feed motor assembly

The feed motor assembly is a stepping motor that rotates the pick roll and feed roll in the reverse direction (CCW
direction) and rotates the ADF transport roll assembly in the normal direction (CW direction).

When this motor rotates in the reverse direction, the ADF transport roll assembly stops.

ADF registration motor

The registration motor is a stepping motor that rotates the ADF registration roll assembly, ADF feed-out roll
assembly, and ADF exit roll assembly in the reverse direction (CCW direction) and rotates the ADF exit roll
assembly in the normal direction (CW direction).

When this motor rotates in the normal direction, the ADF registration roll assembly and ADF feed-out roll
assembly run idle.

Inverter solenoid assembly

This solenoid nips or releases the ADF exit roll assembly and exit pinch roll.

Normally, the ADF exit roll assembly and exit pinch roll are nipped.

On: Released
Off: Nipped

1-48 MFP Service Manual

ADF feed motor assembly

Sensor (sheet through)

ADF registration
motor

Sensor (ADF registration)

7510-XXX

Sensor (ADF pre-registration)

Sensor (ADF inverter)

Sensor (ADF APS 1)

Inverter solenoid assembly

Sensor (ADF APS 3)

Sensor (ADF APS 2)

General information 1-49

7510-XXX

Control

Document size detection at scanner unit assembly

The width (fast-scan-directional size) of the document sheet on the Platen Grass is detected with the CCD
image sensor, and the length (slow-scanning-directional size) is detected with the sensor (platen length APS 1)
and the sensor (platen length APS 2).

Document size detection timing

The size of the document sheet on the platen glass is detected at the following timings:

• When the Platen Cover (ADF) is closed

• When the START button is pressed with the Platen Cover (ADF) open

Identification of standard document sizes

The width of the document sheet is detected in millimeters with the CCD image sensor to determine the size in
the fast scanning direction. With respect to a pair of documents whose sizes in the fast scanning direction are
the same, the document size is determined by detecting paper presence/absence at the positions of sensor
(platen length APS 1) and sensor (platen length APS 2) (e.g., A4LEF vs. A3SEF; 8.5x11SEF vs. 8.5x13SEF).

The standard document sizes to be identified by the same given detection information are defined on an
area-by-area basis. Each area is to be set in the system data.

The figure below shows the positional relationships among the scan position of the CCD image sensor and the
positions of sensor (platen length APS 1) and the sensor (platen length APS 2).

Sensor (platen
length APS 1)

Sensor (platen
length APS 2)

CCD scan position

1-50 MFP Service Manual

7510-XXX

Shown below are the combinations of document size, detection range in the fast scanning direction, and
sensors.

Document Size

Japanese Post

Width (Fast scanning
direction: mm)

Fast
scanning
Width

Detection
Range

100.0 90—115 Off Off X X N

Length (Slow scanning direction) Area

Sensor (platen
length APS 1)

Sensor (platen
length APS 2)

012

Card SEF

Post Card SEF 101.6 N O X

A6 SEF 105.0 O N O

5 X 7 SEF 127.0 115—138 Off Off N O N

B6 SEF 128.0 O N O

5.5 X 8.5 SEF 139.7 138—163 Off Off X O X

A5 SEF 148.0 O X O

Japanese Post

148.0 X X N

Card LEF

Post Card LEF 152.4 N N X

B5 SEF 182.0 163—188 On Off O X O

16kai SEF 194.0/

188—202 On/Off Off X X

X*3

195.0

*1

*1

*3

*3

OX

OX

A5 LEF 210.0 202—213 Off Off O X

A4 SEF 210.0 On On/Off O X

5.5 X 8.5 LEF 215.9 213—226 Off Off O

8.5 X 11 SEF 215.9 On Off O

O

O

*3

*3

8.5 X 12.4 SEF 215.9 On On N N X

8.5 X 13 SEF 215.9 O N X

8.5X 14 SEF 215.9 N O X

*2

*4

XO

8 X 10 LEF 254.0 226—262 Off Off N X

B5 LEF 257.0 O

B4 SEF 257.0 On On O X O

*2

*4

NX

Executive LEF 266.7 262—267 Off Off X O

8 X 10.5 LEF 266.7 X

16kai LEF 267.0/

267—275 Off Off X X X

270.0

8kai SEF On On/Off X X X

8.5 X 11 LEF 279.4 275—289 Off Off O

*2

OX

11 X 14.9 SEF 279.4 On On N N X

11 X 17 SEF 279.4 O O X

General information 1-51

X

X

*3

*3

*5

*5

7510-XXX

Document Size

Width (Fast scanning
direction: mm)

Fast
scanning
Width

Detection
Range

Length (Slow scanning direction) Area

Sensor (platen
length APS 1)

Sensor (platen
length APS 2)

012

A4 LEF 297.2 289—307 Off Off O O O

A3 SEF 297.2 On On O O O

O: Detectable by default.

N: Detectable by replacing the document size marked as O with the system data having the same detection
information.

X: Not detectable.

*1

: Changeable from 5.5 X 8.5 LEF to A5 LEF, or from 8.5 X 11 SEF to A4 SEF by the system data.

*2

: Changeable from B5 LEF or 8.5 X 11 LEF to 8 X 10.5 LEF by the system data.

*3

: Detectable by setting the system data.

*4:

Changeable from Executive LEF to 8 X10 LEF.

*5

: Changeable from A4 LEF to 8.5 X 11 LEF, or from A3 SEF to 11 X 17 SEF.

*5

*5

ADF document size detection

The ADF first detects the document size when the document is set on the document tray, and detects the
document size again when the document travels.

When the document is set on the document tray, the document size is determined by a combination of ON/off
status of the sensor (ADF APS 1), sensor (ADF APS 2) and the sensor (ADF APS 3) for detecting the document
width (in the fast scanning direction) and ON/off status of the sensor (document tray length 1) and the sensor
(document tray length 2) for detecting the document length (in the slow scanning direction).

The document width is detected according to whether the sensor (document tray width 1), sensor (document
tray width 2) and the sensor (document tray width 3) are shielded (blocked) or unshielded (unblocked) by the
document tray size actuator moving in conjunction with guides of the document tray.

The document length is detected according to whether the sensor (document tray length 1) and the sensor
(document tray length 2) are shielded (blocked) or unshielded (unblocked) by the document set on the tray.

When different-sized sheets are stacked on the tray, the document size is determined by using the largest
possible combination of width and length obtained from the sheets.

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The standard document sizes to be identified by the same given detection information are defined on an
area-by-area basis. Each area is to be set in the system data.

General information 1-53

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The table below shows the combinations of document sizes and sensors.

Width (Fast scanning direction)

Document Size

5.5 X 8.5 SEF Off Off Off On Off X O X

A5 SEF OXO

B5 SEF Off Off Off On Off X X O

8 X 10 SEF XOX

8 X 10.5 SEF OXX

A5 LEF Off On Off Off Off O O O

A4 SEF On Off O O O

5.5 X 8.5 LEF Off On On Off Off O O O

8.5 X 11 SEF On Off O O O

8.5 X 13 SEF On On O X X

8.5 X 14 SEF XOO

8 X 10 LEF On Off On On Off O O O

B5 LEF Off Off O O O

B4 SEF On On O O O

Sensor (document tray width *)

123 1 2 012

Length (Slow scanning direction)

Sensor (document tray length *)

Area

8 X 10.5 LEF On Off Off On Off O O X

Executive LEF Off Off O O X

16kai LEF XXO

8kai SEF On On O O O

8.5 X 11 LEF On On Off On Off O O O

11 X 17 SEF On On O O O

A4 LEF On On On On Off OOO

A3 SEF On On O O O

O: Detectable

X: Not Detectable

While the document is traveling, document size detection is performed as follows.

When the document goes through the sensor (ADF APS 1), sensor (ADF APS 2) and the sensor (ADF APS 3),
the document width in the fast scanning direction is detected according to the combination of shielded/
unshielded status of each sensor.

The document length in the slow scanning direction is detected by the scanning time measured from the
moment when the document starts scanning from the wait position (see Pre-registration) until its tail end passes
through the sensor (ADF sheet through).

Document scanning steps

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7510-XXX

The CCD image sensor is used to read image data from the document. To stabilize the read image data, the
CCD image sensor output is adjusted and the read image data is compensated.

The CCD image sensor output is adjusted with the gain/offset voltage of the amplifier in the analog circuit. This
adjustment includes AGC and AOC.

In addition, the reference data is collected and compensation values are calculated to compensate for the read
image data. This compensation includes shading compensation, white variation compensation, and black
variation compensation. These adjustment and compensation steps are detailed below.

The reference data is prepared by reading the image data of a white reference plate via the CCD image sensor.

AGC (auto gain control): white level coarse adjustment

AGC is a function that adjusts the gain so that the CCD image sensor output becomes as specified when the
exposure lamp is on. AGC functions as a coarse white level adjustment of the image. AGC is performed at
initialization.

AOC (auto offset control)

AOC is a function that adjusts the offset voltage so that the CCD image sensor output becomes as specified
when the exposure lamp is off. AOC functions as a black level adjustment of the image. AOC is performed at
initialization.

Shading compensation

Shading compensation is a function that compensates for pixel-to-pixel sensitivity variation of the CCD image
sensor and pixel-to-pixel output variation of the CCD image sensor that is caused by illumination non uniformity
in the fast scanning direction of the optical system.

Shading compensation is performed at initialization.

White level variation compensation

White level variation compensation is performed to compensate for variation in light quantity of the exposure
lamp.

White level variation compensation includes two processes: acquisition of white variation compensation
reference data during initialization and white variation compensation during document scanning.

For the ADF, white level variation compensation is performed at both the white reference plate position of the
platen and at the white reference plate of the scanner read position.

Black level variation compensation

Black level variation compensation is performed to compensate for variation in black level that is caused by the
temperature drift of the CCD image sensor and analog circuit.

Black level variation compensation is performed during document scanning.

For the platen, black level variation compensation is performed at the white reference plate position of the
platen. For the ADF, black level variation compensation is performed at the scanner read position.

General information 1-55

7510-XXX

TTM theory

1-56 MFP Service Manual

Media transport

Media transport path

Media is supplied from tray 2, tray 3 or tray 4, and is transported to the printer along the media transport path
shown below.

Tray 2

Tray 3

7510-XXX

Tray 4

Pick roll

Separation roll

Feed roll

Pick roll

Separation roll

Feed roll

Tray module media Transport roll ASM

Media transport roll ASM

Registration roll ASM

2nd transfer roll assembly

Transfer belt

Pick roll

Separation roll

Feed roll

Heat roll

Pressure roll

Fuser unit ASM

Standard media

exit roll assembly

Standard media exit

Duplex media transportroll ASM

Duplex media Center transport

roll ASM

General information 1-57

7510-XXX

Media transport path

The following is a cross section of the printer and the tandem tray module, showing the main components
directly associated with the media path and transport.

Bridge unit assembly

Bridge unit bin exit
roll assembly

Standard media exit
roll assembly

Fuser exit
roll assembly

ADF and Scanner

(included with finisher)

Finisher media entrance
roll assembly

Upper media
transport roll assembly

Upper media exit
roll assembly

Buffer roll assembly

Media eject
roll assembly

Duplex media
transport roll

assembly

MPF

MPF pick roll

Media transport roll assembly

Tray module transport
roll assembly

Tray 4 transport roll assembly

Pick roll

Feed roll

Separation roll

Tray module transport
roll assembly

Fuser

2nd transfer
roll assembly

Registration
roll assembly

Tra y 3

Tra y 1

Tra y 2

Tra y 4

Tra y 2

Tra y 2

Tra y 3

Tra y 4

Booklet maker unit
(optional)

Finisher

(optional)

TTM

1TM (optional)

3TM (optional)

Lower media exit
roll assembly

Booklet media
transport roll assembly

Booklet media
entrance roll assembly

Booklet media
exit roll assembly

Booklet folding
roll assembly

Functions of main components

When the TTM is installed under the printer, additional trays are available.

Media tray assembly

It is necessary to adjust the rear side guides in the media tray assembly to match the media size.

Rear media guide

The rear media guide can be adjusted to different media sizes by moving it to the front or rear. The guide comes
into contact with the rear edge of the media and holds it in position.

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Bottom plate

The force pushing up the bottom plate is transmitted by the driving force of the motor on the media feed unit
assembly. The bottom plate is pushed up by the rotation of the lift up shaft, which causes the supplied media to
come in contact with the pick roll.

The force pushing up the bottom plate of tray 3 is transmitted by the driving force of the media feed lift motor on
the media feed unit assembly to the media lift shaft assembly through the tray lift gear assembly 3. The bottom
plate is lifted up via the rear tray cables, front right cable and front left cable by the rotation of the tray lift shaft
assembly, which causes the supplied media to come into contact with the pick roll.

The force pushing up the bottom plate of tray 4 is transmitted to the tray lift shaft assembly through the tray lift
gear assembly 4. The bottom plate is lifted up via the front tray cables and rear tray cables by the rotation of the
tray lift shaft assembly, which causes the supplied media to contact the pick roll.

Tray 2 media tray assembly

Rear media guide

Bottom plate

End guide

General information 1-59

7510-XXX

Tray 3 or 4 media tray assembly

Rear lift cables

Rear media guide

Bottom plate

F/L lift cable

F/R lift cable

1-60 MFP Service Manual

TTM media feed units

Media feed unit assembly

Since the tray 3 and tray 4 are functionally equivalent in terms of the switch (TTM media size), sensor (media
out), sensor (media level) and sensor (pre-feed), only the components of one tray are described here.

The media feed unit assembly is a mechanical unit supplying media from the media tray assembly to the printer.
The driving force from the media feed lift motor on the media feed unit assembly is transmitted to the three roll
assemblies to feed media.

When the pick roll picks up sheets of media and the remaining media decreases, the media level actuator of the
sensor (media level) lowers accordingly.

Media feed lift motor

The media feed lift motor is activated to feed media and to lift the bottom plate. While feeding media, it rotates
forward to drive the pick roll. When lifting the bottom plate, it rotates in reverse to drive the tray module gears to
turn the lift up shaft.

Switch (media size)

This switch (media size) sets the size of media supplied from each media tray a

7510-XXX

Switch (TTM media size)

The switch (TTM media size) switches the setting of the size of media supplied from each media tray assembly.
A signal indicating the set size is transmitted as a voltage to the printer engine card assembly.

Sensor (media out)

If there is no media in the media tray assembly, the media out actuator lowers and the flag of the media out
actuator that has stayed in the sensor (media out) sensing area leaves there. Thus, the light of the sensor is
transmitted. When the sensing area is blocked (media is present), the signal turns off.

Sensor (media level)

This sensor detects by the actuator position whether media in the media tray assembly is lifted. When the flag of
the actuator leaves the sensor (media level) sensing area, the sensor detects that the media has been lifted.

General information 1-61

7510-XXX

Media feed lift motor

Sensor (media level)

Sensor (media out)

Media feed unit assembly

Main components

Switch (tray module left door interlock)

Switch (TTM media size)

Front

The switch (tray module left door interlock) detects open/close of the tray module left door assembly.

Sensor (tray 2 feed-out)

The sensor (tray 2 feed-out) detects media fed from trays 2, 3, or 4.

Sensor (tray 3 feed-out)

The sensor (tray 3 feed-out) detects media fed from the tray 3 or tray 4.

Sensor (tray 4 feed-out)

The sensor (tray 4 feed-out) detects media fed from the tray 4.

Tray module media transport roll assembly

The tray module transport roll assembly feeds media from the tray 3 or tray 4 to the printer.

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Tray module drive motor

This motor is used to drive the media transport mechanism in the tray module.

TTM tray 4 media transport motor

This motor is used in the TTM to transport media from the tray 4 towards the tray module left door assembly.

TTM controller card assembly

The TTM controller card assembly, which contains a CPU, controls media feed in the tandem tray module upon
receiving a command from the upper printer engine card assembly and sensor/switch information.

Tray module
drive motor

Switch (tray module interlock)

Sensor
(tray 2 feed-out)

Sensor
(tray 3 feed-out)

TTM tray 4 media
transport drive motor

TTM controller
card assembly

Switch
(media size)

Front

Switch TTM

(media size)

Sensor (tray 4 feed-out)

General information 1-63

7510-XXX

Switch (TTM media size)

The following table gives on/off states of the switches on the switch (TTM media size), corresponding to the
media sizes of the media tray assembly.

Note: The switches (TTM media size) are denoted by “S/W1” and “S/W3” respectively from the left side.

Media Size

S/W1 S/W3

No Tray Off Off
B5L/7.25” x 10.5”L Off On

8.5” x 11”L On Off
A4L On On

Analog switch

1-64 MFP Service Manual

3TM theory

7510-XXX

General information 1-65

7510-XXX

Media transport

Media transport path

Media is supplied from tray 3 or tray 4, and is transported to the printer along the media transport path shown
below.

Tray 2

Tray 3

Tray 4

Pick roll

Separation roll

Feed roll

Pick roll

Separation roll

Feed roll

Tray module media Transport roll ASM

Media transport roll ASM

Registration roll ASM

2nd transfer roll assembly

Transfer belt

Pick roll

Separation roll

Feed roll

1-66 MFP Service Manual

Heat roll

Pressure roll

Fuser unit ASM

Standard media

exit roll assembly

Standard media exit

Duplex media transportroll ASM

Duplex media Center transport

roll ASM

7510-XXX

Media transport path

The following is a cross section of the printer and the tandem tray module, showing the main components
directly associated with the media path and transport.

Bridge unit assembly

Bridge unit bin exit
roll assembly

Standard media exit
roll assembly

Fuser exit
roll assembly

ADF and Scanner

(included with finisher)

Finisher media entrance
roll assembly

Upper media
transport roll assembly

Upper media exit
roll assembly

Buffer roll assembly

Media eject
roll assembly

Duplex media
transport roll

assembly

MPF

MPF pick roll

Media transport roll assembly

Tray module transport
roll assembly

Tray 4 transport roll assembly

Pick roll

Feed roll

Separation roll

Tray module transport
roll assembly

Fuser

2nd transfer
roll assembly

Registration
roll assembly

Tra y 3

Tra y 1

Tra y 2

Tra y 2

Tra y 2

Tra y 3

Tra y 4

Tra y 4

Booklet maker unit
(optional)

Finisher

(optional)

TTM

1TM (optional)

3TM (optional)

Lower media exit
roll assembly

Booklet media
transport roll assembly

Booklet media
entrance roll assembly

Booklet media
exit roll assembly

Booklet folding
roll assembly

Functions of main components

When the 3TM is installed under the printer, additional trays are available.

Media tray assembly

Media feed unit assembly

It is necessary to adjust the guide and the end guide in the media tray assembly to match the media size.

Rear media guide

The rear media guide can be adjusted to different media sizes by moving it to the front or rear. The guide comes
into contact with the rear edge of the media and holds it in position.

General information 1-67

7510-XXX

Bottom plate

The force pushing up the bottom plate is transmitted by the driving force of the motor on the media feed unit
assembly. The bottom plate is pushed up by the rotation of the lift up shaft, which causes the supplied media to
come in contact with the pick roll.

Tray 2, 3, 4 media tray assembly

Rear media guide

Bottom plate

End guide

3TM media feed units

Media feed unit assembly

Since the tray 2, tray 3, and tray 4 are functionally equivalent in terms of the switch (media size), sensor (media
out), sensor (media level) and sensor (pre-feed), only the components of one tray are described here.

The media feed unit assembly is a mechanical unit supplying media from the media tray assembly to the printer.
The driving force from the media feed lift motor on the media feed unit assembly is transmitted to the three roll
assemblies to feed media.

When the pick roll picks up sheets of media and the remaining media decreases, the media level actuator of the
sensor (media level) lowers accordingly.

Media feed lift motor

The media feed lift motor is activated to feed media and to lift the bottom plate. While feeding media, it rotates
forward to drive the pick roll. When lifting the bottom plate, it rotates in reverse to drive the tray module gears to
turn the lift up shaft.

Switch (media size)

The switch (media size) switches the setting of the size of media supplied from each media tray assembly. A
signal indicating the set size is transmitted as a voltage to the printer engine card assembly.

Sensor (media out)

If there is no media in the media tray assembly, the media out actuator lowers and the flag of the media out
actuator that has stayed in the sensor (media out) sensing area leaves there. Thus, the light of the sensor is
transmitted. When the sensing area is blocked (media is present), the signal turns off.

Sensor (media level)

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This sensor detects by the actuator position whether media in the media tray assembly is lifted. When the flag of
the actuator leaves the sensor (media level) sensing area, the sensor detects that the media has been lifted.

Main components

Switch (tray module left door interlock)

The switch (tray module left door interlock) detects open/close of the tray module left door assembly.

Sensor (tray 2 feed-out)

The sensor (tray 2 feed-out) detects media fed from trays 2, 3, or 4.

Sensor (tray 3 feed-out)

The sensor (tray 3 feed-out) detects media fed from the tray 3 or tray 4.

Sensor (tray 4 feed-out)

The sensor (tray 4 feed-out) detects media fed from the tray 4.

Tray module media transport roll assembly

General information 1-69

7510-XXX

The tray module transport roll assembly feeds media from the tray 3 or tray 4 to the printer.

Tray module drive motor

This motor is used to drive the media transport mechanism in the tray module.

3TM controller card assembly

The 3TM controller card assembly, which contains a CPU, controls media feed in the tandem tray module upon
receiving a command from the upper printer engine card assembly and sensor/switch information.

1-70 MFP Service Manual