Canon LBP5000 Series User manual

Feb 26 2007
Service Manual
LBP5000/5100 Series

Application
This manual has been issued by Canon Inc. for qualified persons to learn technical theory, installation, maintenance, and repair
of products. This manual covers all localities where the products are sold. For this reason, there may be information in this
manual that does not apply to your locality.
Corrections
This manual may contain technical inaccuracies or typographical errors due to improvements or changes in products. When
changes occur in applicable products or in the contents of this manual, Canon will release technical information as the need
arises. In the event of major changes in the contents of this manual over a long or short period, Canon will issue a new edition
of this manual.
The following paragraph does not apply to any countries where such provisions are inconsistent with local law.
Trademarks
The product names and company names used in this manual are the registered trademarks of the individual companies.
Copyright
This manual is copyrighted with all rights reserved. Under the copyright laws, this manual may not be copied, reproduced or
translated into another language, in whole or in part, without the written consent of Canon Inc.
COPYRIGHT © 2001 CANON INC.
Printed in Japan
Caution
Use of this manual should be strictly supervised to avoid disclosure of confidential information.

Introduction
Symbols Used
This documentation uses the following symbols to indicate special information:
Symbol Description
Indicates an item of a non-specific nature, possibly classified as Note, Caution, or Warning.
Indicates an item requiring care to avoid electric shocks.
Indicates an item requiring care to avoid combustion (fire).
Indicates an item prohibiting disassembly to avoid electric shocks or problems.
Indicates an item requiring disconnection of the power plug from the electric outlet.
Indicates an item intended to provide notes assisting the understanding of the topic in question.
Indicates an item of reference assisting the understanding of the topic in question.
Provides a description of a service mode.
Provides a description of the nature of an error indication.
Memo
REF.

Introduction
The following rules apply throughout this Service Manual:
1. Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical and mechanical systems with refer-
ence to the timing of operation.
In the diagrams, represents the path of mechanical drive; where a signal name accompanies the symbol , the arrow indicates the
direction of the electric signal.
The expression "turn on the power" means flipping on the power switch, closing the front door, and closing the delivery unit door, which results in
supplying the machine with power.
2. In the digital circuits, '1'is used to indicate that the voltage level of a given signal is "High", while '0' is used to indicate "Low".(The voltage value, how-
ever, differs from circuit to circuit.) In addition, the asterisk (*) as in "DRMD*" indicates that the DRMD signal goes on when '0'.
In practically all cases, the internal mechanisms of a microprocessor cannot be checked in the field. Therefore, the operations of the microprocessors
used in the machines are not discussed: they are explained in terms of from sensors to the input of the DC controller PCB and from the output of the
DC controller PCB to the loads.
The descriptions in this Service Manual are subject to change without notice for product improvement or other purposes, and major changes will be com-
municated in the form of Service Information bulletins.
All service persons are expected to have a good understanding of the contents of this Service Manual and all relevant Service Information bulletins and be
able to identify and isolate faults in the machine."

Contents
Contents
Chapter 1 PRODUCT DESCRIPTION
1.1 Features .....................................................................................................................................................1- 1
1.1.1 Feature .................................................................................................................................................................... 1- 1
1.1.2 Feature .................................................................................................................................................................... 1- 1
1.2 System construction ...................................................................................................................................1- 1
1.2.1 System Construction ............................................................................................................................................... 1- 1
1.2.2 System Construction ............................................................................................................................................... 1- 2
1.3 Product Specifications ................................................................................................................................1- 2
1.3.1 Product Specifications ............................................................................................................................................. 1- 2
1.3.2 Product Specifications ............................................................................................................................................. 1- 3
1.4 Name of Parts.............................................................................................................................................1- 4
1.4.1 External View........................................................................................................................................................... 1- 4
1.4.2 Cross Section View ................................................................................................................................................. 1- 6
1.5 Using the Machine......................................................................................................................................1- 7
1.5.1 Control Panel........................................................................................................................................................... 1- 7
1.6 Safety .........................................................................................................................................................1- 8
1.6.1 Safety of the Laser Light.......................................................................................................................................... 1- 8
1.6.2 Regulations Under the Center for Devices and Radiological Health (CDRH) .........................................................1- 8
1.6.3 Handling the Laser Unit ........................................................................................................................................... 1- 8
1.6.4 Safety of Toner ........................................................................................................................................................ 1- 8
Chapter 2 TECHNICAL REFERENCE
2.1 Functional Configuration.............................................................................................................................2- 1
2.1.1 Outline ..................................................................................................................................................................... 2- 1
2.2 Basic Sequense..........................................................................................................................................2- 1
2.2.1 Basic Sequence of Operation.................................................................................................................................. 2- 1
2.2.2 Power-On Sequence ............................................................................................................................................... 2- 1
2.3 LASER EXPOSURE SYSTEM ...................................................................................................................2- 2
2.3.1 Overview/Configuration ........................................................................................................................................... 2- 2
2.3.1.1 Outline...................................................................................................................................................................................... 2- 2
2.3.2 Laser Control ........................................................................................................................................................... 2- 4
2.3.2.1 Outline...................................................................................................................................................................................... 2- 4
2.3.2.2 Laser Emission Control............................................................................................................................................................ 2- 4
2.3.2.3 Automatic power control (APC)................................................................................................................................................ 2- 5
2.3.2.4 Horizontal synchronous control................................................................................................................................................ 2- 5
2.3.2.5 Image Mask Control................................................................................................................................................................. 2- 5
2.3.2.6 Fault Detection......................................................................................................................................................................... 2- 6
2.3.3 Laser Scanner Motor Control .................................................................................................................................. 2- 6
2.3.3.1 Outline...................................................................................................................................................................................... 2- 6
2.3.3.2 Speed Control .......................................................................................................................................................................... 2- 6
2.3.3.3 Phase Control .......................................................................................................................................................................... 2- 6
2.3.3.4 Fault Detection......................................................................................................................................................................... 2- 7
2.4 IMAGE FORMATION SYSTEM..................................................................................................................2- 7
2.4.1 Overview/Configuration ........................................................................................................................................... 2- 7
2.4.1.1 Outline...................................................................................................................................................................................... 2- 7
2.4.1.2 Image Formation Process........................................................................................................................................................ 2- 8
2.4.1.3 Electrostatic latent image formation block ............................................................................................................................... 2- 9
2.4.1.4 Developing block.................................................................................................................................................................... 2- 10
2.4.1.5 Transfer block ........................................................................................................................................................................ 2- 11
2.4.1.6 Fixing block ............................................................................................................................................................................ 2- 12
2.4.1.7 Drum cleaning block .............................................................................................................................................................. 2- 12

Contents
2.4.2 High-Voltage Control..............................................................................................................................................2- 13
2.4.2.1 Outline.................................................................................................................................................................................... 2- 13
2.4.2.2 Outline.................................................................................................................................................................................... 2- 13
2.4.2.3 Generation of the Primary Charging Bias .............................................................................................................................. 2- 14
2.4.2.4 Generation of the Developing Bias ........................................................................................................................................ 2- 14
2.4.2.5 Generation of the Transfer Bias............................................................................................................................................. 2- 14
2.4.2.6 Generation of the Fixing Bias................................................................................................................................................. 2- 15
2.4.2.7 Electrostatic eliminate bias .................................................................................................................................................... 2- 15
2.4.2.8 ETB drive roller bias............................................................................................................................................................... 2- 15
2.4.3 Image Stabilizaton Control.....................................................................................................................................2- 15
2.4.3.1 Overview of the Image Stabilization Control Mechanism....................................................................................................... 2- 15
2.4.3.2 Environment corrective control .............................................................................................................................................. 2- 15
2.4.3.3 Image density corrective control (D-max control) .................................................................................................................. 2- 15
2.4.3.4 Image halftone corrective control (D-half control) .................................................................................................................. 2- 16
2.4.3.5 Image density detection control ............................................................................................................................................. 2- 16
2.4.3.6 Overview of Color Misregistration Corrective Control ........................................................................................................... 2- 16
2.4.3.7 Color misregistration detection .............................................................................................................................................. 2- 16
2.4.4 Toner Cartridge......................................................................................................................................................2- 17
2.4.4.1 Outline.................................................................................................................................................................................... 2- 17
2.4.4.2 Memory Tag Control .............................................................................................................................................................. 2- 18
2.4.4.3 Detection of Toner cartridge presence/absence .................................................................................................................... 2- 18
2.4.4.4 Detecting the End of Life of the Cartridge.............................................................................................................................. 2- 18
2.4.4.5 Detecting the Level of Toner.................................................................................................................................................. 2- 19
2.4.5 Transfer Unit ..........................................................................................................................................................2- 19
2.4.5.1 ETB Unit................................................................................................................................................................................. 2- 19
2.4.5.2 ETB Cleaning ......................................................................................................................................................................... 2- 20
2.5 Pickup/Feeding/Delivery System.............................................................................................................. 2- 21
2.5.1 Overview/Configuration..........................................................................................................................................2- 21
2.5.1.1 Outline.................................................................................................................................................................................... 2- 21
2.5.2 Other Control .........................................................................................................................................................2- 23
2.5.2.1 Outline.................................................................................................................................................................................... 2- 23
2.5.2.2 Picking Up Paper from the Cassette...................................................................................................................................... 2- 24
2.5.2.3 Picking Up Paper from the Manual Feeder............................................................................................................................ 2- 24
2.5.2.4 Moving the Print Paper .......................................................................................................................................................... 2- 24
2.5.2.5 Transport Speed Control........................................................................................................................................................ 2- 25
2.5.2.6 Paper loop control.................................................................................................................................................................. 2- 25
2.5.2.7 Automatic release of fixing pressure mechanism .................................................................................................................. 2- 26
2.5.3 Detecting Jams ......................................................................................................................................................2- 27
2.5.3.1 Jam Detection Outline............................................................................................................................................................ 2- 27
2.5.3.2 Delay Jams ............................................................................................................................................................................ 2- 27
2.5.3.3 Stationary Jams ..................................................................................................................................................................... 2- 27
2.5.3.4 Other Jams ............................................................................................................................................................................ 2- 27
2.5.4 Duplex Feeding......................................................................................................................................................2- 28
2.5.4.1 Outline.................................................................................................................................................................................... 2- 28
2.5.4.2 Duplexing feed operation ....................................................................................................................................................... 2- 30
2.5.4.3 Duplexing Driver PCB ............................................................................................................................................................ 2- 30
2.6 FIXING UNIT SYSTEM ............................................................................................................................ 2- 31
2.6.1 Overview/Configuration..........................................................................................................................................2- 31
2.6.1.1 Outline.................................................................................................................................................................................... 2- 31
2.6.2 Various Control Mechanisms .................................................................................................................................2- 32
2.6.2.1 Fixing Temperature Control ................................................................................................................................................... 2- 32
2.6.3 Protective Functions ..............................................................................................................................................2- 34
2.6.3.1 Outline.................................................................................................................................................................................... 2- 34
2.6.3.2 Fault Detection....................................................................................................................................................................... 2- 34
2.7 EXTERNAL AND CONTROLS SYSTEM ................................................................................................. 2- 34
2.7.1 Power Supply.........................................................................................................................................................2- 34
2.7.1.1 Power Supply......................................................................................................................................................................... 2- 34
2.7.1.2 Other Function ....................................................................................................................................................................... 2- 35
2.8 ENGINE CONTROL SYSTEM ................................................................................................................. 2- 36
2.8.1 Construction...........................................................................................................................................................2- 36

Contents
2.8.1.1 Outline.................................................................................................................................................................................... 2- 36
2.8.2 DC Controller......................................................................................................................................................... 2- 36
2.8.2.1 Outline.................................................................................................................................................................................... 2- 36
2.8.2.2 Operation of Individual Blocks ............................................................................................................................................... 2- 37
2.8.2.3 Fan/Motor Control .................................................................................................................................................................. 2- 38
2.8.2.4 Fan/Motor Control .................................................................................................................................................................. 2- 38
2.8.2.5 Main Motor Fault Detection.................................................................................................................................................... 2- 38
2.8.2.6 Fan Motor Fault Detection ..................................................................................................................................................... 2- 38
2.8.3 Video Controller PCB ............................................................................................................................................2- 38
2.8.3.1 Outline.................................................................................................................................................................................... 2- 38
2.8.3.2 Overview of the Block ............................................................................................................................................................ 2- 39
Chapter 3 DISASSEMBLY AND ASSEMBLY
3.1 Before Parts Replacement .........................................................................................................................3- 1
3.1.1 Outline ..................................................................................................................................................................... 3- 1
3.2 EXTERNAL AND CONTROLS SYSTEM ...................................................................................................3- 2
3.2.1 Rear Cover .............................................................................................................................................................. 3- 2
3.2.1.1 Preparation for Removing the Rear Cover............................................................................................................................... 3- 2
3.2.1.2 Removing the Rear Cover ....................................................................................................................................................... 3- 2
3.2.1.3 Removing the Rear Cover ....................................................................................................................................................... 3- 2
3.2.2 Right Cover.............................................................................................................................................................. 3- 2
3.2.2.1 Preparation for Removing the Right Cover / Right Cassette Cover......................................................................................... 3- 2
3.2.2.2 Removing the Right Cover / Right Cassette Cover.................................................................................................................. 3- 2
3.2.2.3 Removing the Right Cover/Right Cassette Cover.................................................................................................................... 3- 3
3.2.3 Left Cover ................................................................................................................................................................ 3- 4
3.2.3.1 Preparation for Removing the Left Cover / Left Cassette Cover.............................................................................................. 3- 4
3.2.3.2 Removing the Left Cover / Left Cassette Cover ...................................................................................................................... 3- 4
3.2.3.3 The former procedure of removing the Left Cover/Left Cassette Cover .................................................................................. 3- 4
3.2.3.4 Removing the Left Cover/Left Cassette Cover ........................................................................................................................ 3- 4
3.2.4 Upper Cover ............................................................................................................................................................ 3- 5
3.2.4.1 Preparation for Removing the Upper Cover............................................................................................................................. 3- 5
3.2.4.2 Removing the Upper Cover ..................................................................................................................................................... 3- 5
3.2.4.3 The former procedure of removing the Upper Cover .............................................................................................................. 3- 5
3.2.4.4 Removing the Upper Cover ..................................................................................................................................................... 3- 5
3.2.5 Front Cover.............................................................................................................................................................. 3- 5
3.2.5.1 Preparation for Removing the Front Cover .............................................................................................................................. 3- 5
3.2.5.2 Removing the Front Cover....................................................................................................................................................... 3- 5
3.2.5.3 The former procedure of removing the Front Cover ............................................................................................................... 3- 6
3.2.5.4 Removing the Front Cover....................................................................................................................................................... 3- 6
3.2.6 Delivery Tray ........................................................................................................................................................... 3- 7
3.2.6.1 Removing the Delivery Tray..................................................................................................................................................... 3- 7
3.2.6.2 Removing the Delivery Tray..................................................................................................................................................... 3- 7
3.2.7 Face-down Cover .................................................................................................................................................... 3- 7
3.2.7.1 Preparation for Removing the Face-Down Cover .................................................................................................................... 3- 7
3.2.7.2 Removing the Face-Down Cover............................................................................................................................................. 3- 7
3.2.7.3 The former procedure of removing the Face-Down Cover ...................................................................................................... 3- 7
3.2.7.4 Removing the Face-Down Cover............................................................................................................................................. 3- 7
3.2.8 Main Drive Unit ........................................................................................................................................................ 3- 8
3.2.8.1 Preparation for Removing the Main Drive Assembly ............................................................................................................... 3- 8
3.2.8.2 Removing the Main Drive Assembly ........................................................................................................................................ 3- 8
3.2.8.3 The former procedure of removing the Main Drive Assembly................................................................................................ 3- 10
3.2.8.4 Removing the Main Drive Assembly ...................................................................................................................................... 3- 10
3.2.9 Duplexing Drive Unit.............................................................................................................................................. 3- 12
3.2.9.1 Preparation for Removing the Duplexing Drive Assembly ..................................................................................................... 3- 12
3.2.9.2 Removing the Duplexing Drive Assembly.............................................................................................................................. 3- 12
3.2.10 Main Motor........................................................................................................................................................... 3- 12
3.2.10.1 Preparation for Removing the Main Motor ........................................................................................................................... 3- 12
3.2.10.2 Removing the Main Motor .................................................................................................................................................... 3- 13
3.2.10.3 The former procedure of removing the Main Motor.............................................................................................................. 3- 13

Contents
3.2.10.4 Removing the Main Motor .................................................................................................................................................... 3- 13
3.2.11 DC Controller PCB...............................................................................................................................................3- 13
3.2.11.1 Preparation for Removing the DC Controller PCB ............................................................................................................... 3- 13
3.2.11.2 Removing the DC Controller PCB........................................................................................................................................ 3- 13
3.2.11.3 The former procedure of removing the DC Controller PCB ................................................................................................. 3- 13
3.2.11.4 Removing the DC Controller PCB........................................................................................................................................ 3- 13
3.2.12 Video Controller PCB...........................................................................................................................................3- 14
3.2.12.1 Preparation for Removing the Video Controller PCB ........................................................................................................... 3- 14
3.2.12.2 Removing the Video Controller PCB.................................................................................................................................... 3- 14
3.2.12.3 The former procedure of removing the Video Controller PCB ............................................................................................. 3- 14
3.2.12.4 Removing the Video Controller ............................................................................................................................................ 3- 14
3.2.13 Memory Controller PCB .......................................................................................................................................3- 15
3.2.13.1 Preparation for Removing the Memory Controller PCB ....................................................................................................... 3- 15
3.2.13.2 Removing the Memory Controller PCB ................................................................................................................................ 3- 15
3.2.13.3 The former procedure of Removing the Memory Controller PCB ........................................................................................ 3- 16
3.2.13.4 Removing the Memory Controller PCB ................................................................................................................................ 3- 16
3.2.14 Duplexing Driver PCB ..........................................................................................................................................3- 16
3.2.14.1 Preparation for Removing the Duplexing Driver PCB .......................................................................................................... 3- 16
3.2.14.2 Removing the Duplexing Driver PCB ................................................................................................................................... 3- 16
3.2.15 Low-Voltage Power Supply Assembly .................................................................................................................3- 17
3.2.15.1 Preparation for Removing the Low-Voltage Power Supply PCB.......................................................................................... 3- 17
3.2.15.2 Removing the Low-Voltage Power Supply PCB .................................................................................................................. 3- 17
3.2.15.3 The former procedure of Removing the Low-Voltage Power Supply PCB........................................................................... 3- 18
3.2.15.4 Removing the Low-Voltage Power Supply PCB .................................................................................................................. 3- 18
3.2.16 High-voltage PCB.................................................................................................................................................3- 19
3.2.16.1 Preparation for Removing the High-Voltage Power Supply PCB......................................................................................... 3- 19
3.2.16.2 Removing the High-Voltage Power Supply PCB.................................................................................................................. 3- 19
3.2.16.3 The former procedure of Removing the High-Voltage Power Supply PCB.......................................................................... 3- 19
3.2.16.4 Removing the High-Voltage Power Supply PCB.................................................................................................................. 3- 20
3.2.17 Sub High-Voltage Power Supply PCB .................................................................................................................3- 20
3.2.17.1 Preparation for Removing the Sub High-Voltage Power Supply PCB ................................................................................. 3- 20
3.2.17.2 Removing the Sub High-Voltage Power Supply PCB .......................................................................................................... 3- 21
3.2.18 Machine Outside Environment Sensor.................................................................................................................3- 21
3.2.18.1 The former procedure of removing the Site Environment Sensor....................................................................................... 3- 21
3.2.18.2 Removing the Site Environment Sensor .............................................................................................................................. 3- 21
3.2.19 Cartridge Fan .......................................................................................................................................................3- 21
3.2.19.1 Preparation for Removing the Cartridge Fan ....................................................................................................................... 3- 21
3.2.19.2 Removing the Cartridge Fan ................................................................................................................................................ 3- 21
3.2.19.3 The former procedure of removing Removing the Cartridge Fan ....................................................................................... 3- 21
3.2.19.4 Removing the Cartridge Fan ................................................................................................................................................ 3- 21
3.2.20 Fixing Fan 1 .........................................................................................................................................................3- 21
3.2.20.1 Preparation for Removing the Fixing Fan ............................................................................................................................ 3- 21
3.2.20.2 Removing the Fixing Fan ..................................................................................................................................................... 3- 22
3.3 LASER EXPOSURE SYSTEM ................................................................................................................. 3- 22
3.3.1 Laser Scanner Unit ................................................................................................................................................3- 22
3.3.1.1 Preparation for Removing the Laser Scanner Unit ................................................................................................................ 3- 22
3.3.1.2 Removing the Laser Scanner Unit ......................................................................................................................................... 3- 22
3.3.1.3 The former procedure of removing the Laser Scanner Unit.................................................................................................. 3- 23
3.3.1.4 Removing the Laser Scanner Unit ......................................................................................................................................... 3- 23
3.4 IMAGE FORMATION SYSTEM................................................................................................................ 3- 25
3.4.1 MCY Developing Cylinder Drive Solenoid .............................................................................................................3- 25
3.4.1.1 Preparation for Removing the MCY Developing Cylinder Drive Solenoid ............................................................................. 3- 25
3.4.1.2 Removing the MCY Developing Cylinder Drive Solenoid ...................................................................................................... 3- 25
3.4.1.3 The former procedure of removing the MCY Developing Cylinder Drive Solenoid............................................................... 3- 25
3.4.1.4 Removing the MCY Developing Cylinder Drive Solenoid ...................................................................................................... 3- 25
3.4.2 Bk Developing Cylinder Drive Solenoid .................................................................................................................3- 25
3.4.2.1 Preparation for Removing the Bk Developing Cylinder Drive Solenoid ................................................................................. 3- 25
3.4.2.2 Removing the Bk Developing Cylinder Drive Solenoid .......................................................................................................... 3- 25
3.4.2.3 The former procedure of removing the Bk Developing Cylinder Drive Solenoid................................................................... 3- 26
3.4.2.4 Removing the Bk Developing Cylinder Drive Solenoid .......................................................................................................... 3- 26

Contents
3.4.3 ETB Unit ................................................................................................................................................................ 3- 26
3.4.3.1 Preparation for Removing the ETB Unit................................................................................................................................. 3- 26
3.4.3.2 Removing the ETB Unit ......................................................................................................................................................... 3- 26
3.4.3.3 The former procedure of removing the ETB Unit .................................................................................................................. 3- 27
3.4.3.4 Removing the ETB Unit ......................................................................................................................................................... 3- 27
3.4.4 Static Charge Eliminator........................................................................................................................................ 3- 28
3.4.4.1 Preparation for Removing the Static Eliminator ..................................................................................................................... 3- 28
3.4.4.2 Removing the Static Eliminator.............................................................................................................................................. 3- 28
3.5 PICKUP/FEEDING/DELIVERY SYSTEM.................................................................................................3- 28
3.5.1 Paper Pick-up Feeder Unit .................................................................................................................................... 3- 28
3.5.1.1 Preparation for Removing the Pickup Feeding Assembly...................................................................................................... 3- 28
3.5.1.2 Removing the Pickup Feeding Assembly .............................................................................................................................. 3- 28
3.5.1.3 The former procedure of removing the Pickup/Transport Assembly..................................................................................... 3- 29
3.5.1.4 Removing the Pickup/Transport Assembly ............................................................................................................................ 3- 29
3.5.2 Pickup Motor.......................................................................................................................................................... 3- 30
3.5.2.1 Preparation for Removing the Pickup Motor .......................................................................................................................... 3- 30
3.5.2.2 Removing the Pickup Motor................................................................................................................................................... 3- 30
3.5.2.3 The former procedure of removing the Pickup Motor ........................................................................................................... 3- 31
3.5.2.4 Removing the Pickup Motor .................................................................................................................................................. 3- 31
3.5.3 Cassette Pickup Roller ..........................................................................................................................................3- 31
3.5.3.1 Removing the Pickup Roller................................................................................................................................................... 3- 31
3.5.3.2 Removing the Pickup Roller................................................................................................................................................... 3- 31
3.5.4 Cassette Pick-up Solenoid .................................................................................................................................... 3- 31
3.5.4.1 Preparation for Removing the Cassette Pickup Solenoid ...................................................................................................... 3- 31
3.5.4.2 Removing the Cassette Pickup Solenoid............................................................................................................................... 3- 32
3.5.4.3 The former procedure of removing the Cassette Pickup Solenoid ........................................................................................ 3- 32
3.5.4.4 Removing the Cassette Pickup Solenoid............................................................................................................................... 3- 32
3.5.5 Cassette Separation Pad....................................................................................................................................... 3- 32
3.5.5.1 Removing the Separation Pad ............................................................................................................................................... 3- 32
3.5.5.2 Removing the Separation Pad ............................................................................................................................................... 3- 32
3.5.6 Manual Paper Sensor............................................................................................................................................ 3- 32
3.5.6.1 Preparation for Removing the Manual Feed Paper Sensor ................................................................................................... 3- 32
3.5.6.2 Removing the Manual Feed Paper Sensor............................................................................................................................ 3- 32
3.5.6.3 The former procedure of removing the Manual Feeder Paper Sensor .................................................................................. 3- 33
3.5.6.4 Removing the Manual Feeder Paper Sensor......................................................................................................................... 3- 33
3.5.7 Registration Before Sensor ................................................................................................................................... 3- 33
3.5.7.1 Preparation for Removing the Registration Sensor ............................................................................................................... 3- 33
3.5.7.2 Removing the Registration Sensor ........................................................................................................................................ 3- 33
3.5.7.3 The former procedure of removing the Registration Sensor.................................................................................................. 3- 33
3.5.7.4 Removing the Registration Sensor ........................................................................................................................................ 3- 34
3.5.8 Duplexing Reverse Motor ...................................................................................................................................... 3- 34
3.5.8.1 Preparation for Removing the Duplexing Reversing Motor.................................................................................................... 3- 34
3.5.8.2 Removing the Duplexing Reversing Motor ............................................................................................................................ 3- 34
3.5.9 Duplexing Feed Motor ........................................................................................................................................... 3- 34
3.5.9.1 Preparation for Removing the Duplexing Feed Motor............................................................................................................ 3- 34
3.5.9.2 Removing the Duplexing Feed Motor .................................................................................................................................... 3- 35
3.6 FIXING SYSTEM ......................................................................................................................................3- 35
3.6.1 Fixing Assembly .................................................................................................................................................... 3- 35
3.6.1.1 Preparation for Removing the Fixing Assembly..................................................................................................................... 3- 35
3.6.1.2 Removing the Fixing Assembly.............................................................................................................................................. 3- 35
3.6.1.3 The former procedure of removing the Fixing Assembly ....................................................................................................... 3- 36
3.6.1.4 Removing the Fixing Assembly.............................................................................................................................................. 3- 36
3.6.2 Fixing Film Unit...................................................................................................................................................... 3- 36
3.6.2.1 Preparation for Removing the Fixing Film.............................................................................................................................. 3- 36
3.6.2.2 Removing the Fixing Film ...................................................................................................................................................... 3- 36
3.6.2.3 The former procedure of removing the Fixing Film ................................................................................................................ 3- 38
3.6.2.4 Removing the Fixing Film ...................................................................................................................................................... 3- 38
3.6.3 Fixing Pressure Roller ........................................................................................................................................... 3- 40
3.6.3.1 Preparation for Removing the Fixing Pressure Roller............................................................................................................ 3- 40
3.6.3.2 Removing the Fixing Pressure Roller .................................................................................................................................... 3- 40

Contents
3.6.3.3 The former procedure of removing the Fixing Pressure Roller .............................................................................................. 3- 40
3.6.3.4 Removing the Fixing Pressure Roller .................................................................................................................................... 3- 41
3.6.4 Fixing Motor ...........................................................................................................................................................3- 41
3.6.4.1 Preparation for Removing the Fixing/Delivery Motor ............................................................................................................. 3- 41
3.6.4.2 Removing the Fixing/Delivery Motor ...................................................................................................................................... 3- 41
3.6.4.3 The former procedure of removing the Fixing/Delivery Motor................................................................................................ 3- 41
3.6.4.4 Removing the Fixing/Delivery Motor ...................................................................................................................................... 3- 41
Chapter 4 MAINTENANCE AND INSPECTION
4.1 Periodically Replaced Parts ....................................................................................................................... 4- 1
4.1.1 Periodically Replaced Parts .....................................................................................................................................4- 1
4.2 Consumables ............................................................................................................................................. 4- 1
4.2.1 Durables Replaced by the User ...............................................................................................................................4- 1
4.2.2 Durables Replaced by the Service Person ..............................................................................................................4- 1
4.3 Periodical Service....................................................................................................................................... 4- 1
4.3.1 Periodic Service .......................................................................................................................................................4- 1
4.4 Cleaning ..................................................................................................................................................... 4- 1
4.4.1 Pickup Roller............................................................................................................................................................4- 1
4.4.2 Separation Pad ........................................................................................................................................................4- 1
4.4.3 Registration Roller ...................................................................................................................................................4- 1
4.4.4 Registration Sub Roller ............................................................................................................................................4- 1
4.4.5 Registration Shutter .................................................................................................................................................4- 1
4.4.6 Transport Guide .......................................................................................................................................................4- 1
4.4.7 Delivery Roller..........................................................................................................................................................4- 1
4.4.8 Fixing Inlet Guide .....................................................................................................................................................4- 1
4.4.9 Fixing Pressure Roller..............................................................................................................................................4- 1
4.4.10 Electrostatic Eliminator Unit ...................................................................................................................................4- 2
4.4.11 Fixing Pressure Roller............................................................................................................................................4- 3
4.5 User Maintenance ...................................................................................................................................... 4- 3
4.5.1 Outline......................................................................................................................................................................4- 3
4.5.2 List Of Special Print Mode .......................................................................................................................................4- 4
4.5.3 Outline......................................................................................................................................................................4- 4
4.5.4 List Of Special Print Mode .......................................................................................................................................4- 5
Chapter 5 TROUBLESHOOTING
5.1 Countermeasures....................................................................................................................................... 5- 1
5.1.1 Image Faults ............................................................................................................................................................5- 1
5.1.1.1 Out of Focus ............................................................................................................................................................................ 5- 1
5.2 MEASUREMENT AND ADJUSTMENT......................................................................................................5- 1
5.2.1 Test Print..................................................................................................................................................................5- 1
5.2.1.1 Test Print.................................................................................................................................................................................. 5- 1
5.2.2 Adjustment of Electrical Components .....................................................................................................................5- 2
5.2.2.1 After Replacing the DC controller PCB .................................................................................................................................... 5- 2
5.2.2.2 After Replacing the Video Controller PCB ............................................................................................................................... 5- 2
5.2.2.3 Replacing EEPROM (When E747-000 occurs) ....................................................................................................................... 5- 2
5.2.3 Adjustment of Fixing System ..................................................................................................................................5- 2
5.2.3.1 Checking the Nip Width (fixing pressure roller)........................................................................................................................ 5- 2
5.2.4 Adjustment of Pickup/Feeding/Delivery System .....................................................................................................5- 3
5.2.4.1 When Replacing the Registration Roller .................................................................................................................................. 5- 3
5.3 SERVICE TOOLS ...................................................................................................................................... 5- 4
5.3.1 Standard Tools.........................................................................................................................................................5- 4
5.3.2 Solvent/Oil List .........................................................................................................................................................5- 4
5.4 Location of Convectors............................................................................................................................... 5- 4
5.4.1 Connectors...............................................................................................................................................................5- 4
5.5 ERROR CODE ........................................................................................................................................... 5- 7

Contents
5.5.1 Error Code ............................................................................................................................................................... 5- 7
5.5.2 Error Code ............................................................................................................................................................... 5- 9
5.6 Service Mode............................................................................................................................................5- 11
5.6.1 Outline ................................................................................................................................................................... 5- 11
5.6.1.1 Outline.................................................................................................................................................................................... 5- 11
5.6.2 Service Mode Table............................................................................................................................................... 5- 11
5.6.2.1 Service Mode Items ............................................................................................................................................................... 5- 11
5.6.2.2 Service Mode Items ............................................................................................................................................................... 5- 11
Chapter 6 APPENDIX
6.1 OUTLINE OF ELECTRICAL COMPONENTS ............................................................................................6- 1
6.1.1 Clutch/Solenoid ....................................................................................................................................................... 6- 1
6.1.1.1 Solenoids ................................................................................................................................................................................. 6- 1
6.1.1.2 Solenoids ................................................................................................................................................................................. 6- 1
6.1.2 Motor/Fan ................................................................................................................................................................ 6- 2
6.1.2.1 Motors and Fans ...................................................................................................................................................................... 6- 2
6.1.2.2 Motors and Fans ...................................................................................................................................................................... 6- 3
6.1.3 Sensor ..................................................................................................................................................................... 6- 4
6.1.3.1 Sensors.................................................................................................................................................................................... 6- 4
6.1.3.2 Sensors.................................................................................................................................................................................... 6- 5
6.1.4 PCBs ....................................................................................................................................................................... 6- 6
6.1.4.1 PCBs........................................................................................................................................................................................ 6- 6
6.1.4.2 PCBs........................................................................................................................................................................................ 6- 7

Contents

Chapter 1 PRODUCT DESCRIPTION

Contents
Contents
1.1 Features ..........................................................................................................................................................................1-1
1.1.1 Feature.......................................................................................................................................................................................... 1-1
1.1.2 Feature.......................................................................................................................................................................................... 1-1
1.2 System construction .......................................................................................................................................................1-1
1.2.1 System Construction .................................................................................................................................................................... 1-1
1.2.2 System Construction .................................................................................................................................................................... 1-2
1.3 Product Specifications....................................................................................................................................................1-2
1.3.1 Product Specifications ................................................................................................................................................................. 1-2
1.3.2 Product Specifications ................................................................................................................................................................. 1-3
1.4 Name of Parts.................................................................................................................................................................1-4
1.4.1 External View .............................................................................................................................................................................. 1-4
1.4.2 Cross Section View...................................................................................................................................................................... 1-6
1.5 Using the Machine .........................................................................................................................................................1-7
1.5.1 Control Panel ............................................................................................................................................................................... 1-7
1.6 Safety .............................................................................................................................................................................1-8
1.6.1 Safety of the Laser Light.............................................................................................................................................................. 1-8
1.6.2 Regulations Under the Center for Devices and Radiological Health (CDRH)............................................................................ 1-8
1.6.3 Handling the Laser Unit............................................................................................................................................................... 1-8
1.6.4 Safety of Toner ............................................................................................................................................................................ 1-8

Chapter 1
1-1
1.1 Features
1.1.1 Feature
0010-5849
LBP5000
1. Smallest Color LBP
The machine has the smallest body of all Canon color LBPs.
2. Electrostatic Transportation Belt (ETB)
The machine uses an ETB for movement of media and transfer of images. The direct transfer of color images from the photosensitive drum to media has enable
a significant increase in printing speed.
3. Four consecutive drum method (Inline method)
The machine uses a 4-drum construction, in which 4 toner cartridges are arranged in a straight line for one-shot transfer of 4 colors. Compared with the
conventional rotary construction, it brings about a bigger reduction in transfer time and a bigger increase in printing speed (full color).
4. Integrated Laser Scanner Unit
The machine uses a 4-beam/2-mirror mechanism in which 2 laser beams (colors) are directed to each polygon mirror. Thanks to the elimination of the need for
separate laser scanner units commonly found in a 4-drum construction, the machine is less subject to color displacement and has a smaller laser unit.
5. On-Demand Fixing
The machine uses an on-demand fixing method combined with a ceramic heater so far mostly used in a mono-color printer. The fact has led to a shorter warm-
up period and lower energy consumption.
6. Support of Various Media Types
The machine permits the use of transparencies (mono-color prints only), label sheets, envelopes, and postcard-size sheets through both its cassette and manual
feeder.
Moreover, it also permits the use of heavy paper (163 g/m2 max.) in its cassette.
7. High-Performance Printing System (CAPT)
The machine draws on the latest developments in CAPT (Canon Advanced Printing Technology), which promises high performance in a Windows operating
system. Thanks to the technology, data processing usually assigned to the printer is now fully undertaken by a PC to take full advantage of the use of a PC for
higher printing speed. Its added benefits include the ability to process a large volume of data without adding memory to the printer.
8. Ease of Maintenance
The toner cartridges (cyan, magenta, yellow, black) each consist of a toner casing and a drum constructed as a single entity. This way, there is no need for toner
replenishment or drum replacement, which could well soil the hands of the user or take up his/her time. Mere replacement of the appropriate toner cartridge is
enough to keep the machine in good working condition.
The access cover is found at the front of the machine so that both cartridge replacement and jam removal are easy. In terms of printing processes, all (pickup,
development, transfer, fixing) take place at the front of the machine, resulting in a highly simple paper path.
1.1.2 Feature
0015-8328
LBP5100
1. Electrostatic Transportation Belt (ETB)
The machine uses an ETB for movement of media and transfer of images. The direct transfer of color images from the photosensitive drum to media has enable
a significant increase in printing speed.
2. Four consecutive drum method (Inline method)
The machine uses a 4-drum construction, in which 4 toner cartridges are arranged in a straight line for one-shot transfer of 4 colors. Compared with the
conventional rotary construction, it brings about a bigger reduction in transfer time and a bigger increase in printing speed (full color).
3. Integrated Laser Scanner Unit
The machine uses a 4-beam/2-mirror mechanism in which 2 laser beams (colors) are directed to each polygon mirror. Thanks to the elimination of the need for
separate laser scanner units commonly found in a 4-drum construction, the machine is less subject to color displacement and has a smaller laser unit.
4. On-Demand Fixing
The machine uses an on-demand fixing method combined with a ceramic heater so far mostly used in a mono-color printer. The fact has led to a shorter warm-
up period and lower energy consumption.
5. Duplex Unit Installed as Standard
LBP5100 is supplied with the duplex unit. Therefore, you can automatically perform 2-sided printing with paper (A4, Legal, Letter, and Foolscap size) loaded in
the manual feed slot or paper cassette. By doing so, you can save paper and make the file space more efficient.
6. Support of Various Media Types
The machine permits the use of transparencies (mono-color prints only), label sheets, envelopes, and postcard-size sheets through both its cassette and manual
feeder.
Moreover, it also permits the use of heavy paper (163 g/m2 max.) in its cassette.
7. High-Performance Printing System (CAPT)
The machine draws on the latest developments in CAPT (Canon Advanced Printing Technology), which promises high performance in a Windows operating
system. Thanks to the technology, data processing usually assigned to the printer is now fully undertaken by a PC to take full advantage of the use of a PC for
higher printing speed. Its added benefits include the ability to process a large volume of data without adding memory to the printer.
8. Ease of Maintenance
The toner cartridges (cyan, magenta, yellow, black) each consist of a toner casing and a drum constructed as a single entity. This way, there is no need for toner
replenishment or drum replacement, which could well soil the hands of the user or take up his/her time. Mere replacement of the appropriate toner cartridge is
enough to keep the machine in good working condition.
The access cover is found at the front of the machine so that both cartridge replacement and jam removal are easy. In terms of printing processes, all (pickup,
development, transfer, fixing) take place at the front of the machine, resulting in a highly simple paper path.
1.2 System construction
1.2.1 System Construction
0010-9607
LBP5000
The following shows the machine's system construction:

Chapter 1
1-2
F-1-1
[1] Paper Feeder PF-92
[2] Network Board NB-C1
1.2.2 System Construction
0015-8325
LBP5100
The following shows the machine's system construction:
F-1-2
[1] Paper Feeder PF-92
[2] Network Board NB-C2
1.3 Product Specifications
1.3.1 Product Specifications
0010-6376
LBP5000
Body installation method Desktop page printer
Photosensitive medium OPC drum
Charging method Roller charging
Exposure method Laser scanning
Development method Toner projection development
Transfer method By Electrostatic Transportation Belt
Separation method Curvature
Pickup method By cassette/manual feeder
Cassette pickup method By separation pad
Drum cleaning method By blade
Trasnsfer cleaning method Drum static collection
Fixing method On-demand
Delivery method Face-down
Contrast adjustment function Auto
Toner level detection function Available
ERRLNK100
NB-C1
ERRLNK100
NB-C1