Canon iR7086 User manual

Sep 7 2007
Service Manual
iR7105/7095/7086 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 Introduction
1.1 System Construction ..................................................................................................................................1- 1
1.1.1 System Configuration with Input/Output Accessories..............................................................................................1- 1
1.1.2 Combination of Delivery Accessories......................................................................................................................1- 3
1.1.3 System Configuration with Printing/Transmission Accessories...............................................................................1- 4
1.1.4 Functions of Printing/Transmission Accessories.....................................................................................................1- 5
1.2 Product Specifications................................................................................................................................1- 6
1.2.1 Names of Parts........................................................................................................................................................1- 6
1.2.1.1 External View...........................................................................................................................................................................1- 6
1.2.1.2 Cross Section........................................................................................................................................................................... 1- 7
1.2.2 Using the Machine...................................................................................................................................................1- 8
1.2.2.1 Power Switch ...........................................................................................................................................................................1- 8
1.2.2.2 Points to Note About Turning Off the Main Power Switch .......................................................................................................1- 9
1.2.2.3 Control Panel ........................................................................................................................................................................... 1- 9
1.2.3 User Mode Items...................................................................................................................................................1- 10
1.2.3.1 Common Settings .................................................................................................................................................................. 1- 10
1.2.3.2 Timer Settings........................................................................................................................................................................ 1- 13
1.2.3.3 Adjustment/Cleaning..............................................................................................................................................................1- 13
1.2.3.4 Report Settings ...................................................................................................................................................................... 1- 13
1.2.3.5 System Settings.....................................................................................................................................................................1- 14
1.2.3.6 Copy Settings......................................................................................................................................................................... 1- 15
1.2.3.7 Communications Settings ...................................................................................................................................................... 1- 16
1.2.3.8 Mail Box Settings ................................................................................................................................................................... 1- 17
1.2.3.9 Address Book Settings........................................................................................................................................................... 1- 17
1.2.3.10 Voice Guide Settings............................................................................................................................................................1- 17
1.2.4 Safety ....................................................................................................................................................................1- 17
1.2.4.1 Safety About Laser Light........................................................................................................................................................ 1- 17
1.2.4.2 CDRH Regulations.................................................................................................................................................................1- 18
1.2.4.3 Handling of the Laser Assembly............................................................................................................................................1- 18
1.2.4.4 Safety of Toner ......................................................................................................................................................................1- 19
1.2.5 Product Specifications...........................................................................................................................................1- 19
1.2.5.1 Product Specifications ...........................................................................................................................................................1- 19
1.2.6 Function List..........................................................................................................................................................1- 21
1.2.6.1 Print Speed ............................................................................................................................................................................ 1- 21
1.2.6.2 Paper Type ............................................................................................................................................................................ 1- 22
1.2.7 RDS Specification..................................................................................................................................................1- 23
1.2.7.1 Embedded RDS (e-RDS)....................................................................................................................................................... 1- 23
Chapter 2 Installation
2.1 Making Pre-Checks ....................................................................................................................................2- 1
2.1.1 Points to Note Before Starting the Installation Work ...............................................................................................2- 1
2.1.2 Points to Note Before Starting the Installation Work ...............................................................................................2- 1
2.1.3 Selecting the Site of Installation ..............................................................................................................................2- 1
2.1.4 Installation Space....................................................................................................................................................2- 2
2.1.5 Installation Space....................................................................................................................................................2- 3
2.1.6 Checking the Contents............................................................................................................................................2- 4
2.1.7 Checking the Contents............................................................................................................................................2- 7
2.1.8 Order of Installing Accessories................................................................................................................................2- 9
2.1.9 Order of Installing Accessories..............................................................................................................................2- 10
2.2 Unpacking and Installation .......................................................................................................................2- 11
2.2.1 Points to Note When Turning On/Off the Main Power...........................................................................................2- 11
2.2.2 Unpacking..............................................................................................................................................................2- 11

Contents
2.2.3 Unpacking..............................................................................................................................................................2- 13
2.2.4 Mounting the Scanner System...............................................................................................................................2- 15
2.2.5 Mounting the Fixing Assembly...............................................................................................................................2- 15
2.2.6 Mounting the Charging Assembly..........................................................................................................................2- 15
2.2.7 Mounting the Charging Assembly..........................................................................................................................2- 17
2.2.8 Mounting the Developing Assembly.......................................................................................................................2- 19
2.2.9 Mounting the Pickup Assembly..............................................................................................................................2- 21
2.2.10 Mounting the Control Panel..................................................................................................................................2- 21
2.2.11 Mounting the Control Panel..................................................................................................................................2- 26
2.2.12 Supplying Toner...................................................................................................................................................2- 29
2.2.13 Turning On the Main Power.................................................................................................................................2- 29
2.2.14 Stirring the Toner .................................................................................................................................................2- 30
2.2.15 Stirring the Toner .................................................................................................................................................2- 30
2.2.16 Index Sheet Attachment.......................................................................................................................................2- 30
2.2.17 Others ..................................................................................................................................................................2- 30
2.2.18 Others ..................................................................................................................................................................2- 31
2.2.19 Attaching the Labels, Placing Paper, and Checking Images and Operation........................................................2- 31
2.2.20 Attaching the Labels, Placing Paper, and Checking Images and Operation........................................................2- 32
2.2.21 Adjusting the Horizontal Registration...................................................................................................................2- 33
2.2.22 Adjusting the Horizontal Registration...................................................................................................................2- 35
2.2.23 Adjusting the Lead Edge Registration..................................................................................................................2- 36
2.2.24 Adjusting the Lead Edge Registration..................................................................................................................2- 36
2.2.25 Setting the Cassette.............................................................................................................................................2- 37
2.2.26 Correcting the Skew.............................................................................................................................................2- 37
2.2.27 Switching Over the Paper Size for the Front Deck (right, left) .............................................................................2- 37
2.2.28 Fixing Host Machine in Place...............................................................................................................................2- 38
2.2.29 Checking the Operation in a System Configuration.............................................................................................2- 38
2.3 Checking the Connection to the Network.................................................................................................2- 39
2.3.1 Overview................................................................................................................................................................2- 39
2.3.2 Checking the Network Connections.......................................................................................................................2- 39
2.3.3 Checking the Network Connections.......................................................................................................................2- 39
2.3.4 Using the PING Command ....................................................................................................................................2- 39
2.3.5 Using the PING Command ....................................................................................................................................2- 40
2.3.6 Making a Check Using a Remote Host Address....................................................................................................2- 40
2.4 Troubleshooting the Network ...................................................................................................................2- 41
2.4.1 Troubleshooting the Network.................................................................................................................................2- 41
2.4.2 Troubleshooting the Network.................................................................................................................................2- 41
2.4.3 Making a Check Using a Loop Back Address........................................................................................................2- 41
2.4.4 Making a Check Using a Local Host Address........................................................................................................2- 41
2.5 Installing the Card Reader........................................................................................................................2- 41
2.5.1 Checking the Contents...........................................................................................................................................2- 41
2.5.2 Turning Off the Host Machine................................................................................................................................2- 42
2.5.3 Installing the Card Reader-D1 ...............................................................................................................................2- 42
2.5.4 Installing the Card Reader-D1 ...............................................................................................................................2- 46
2.6 Installing the Reader Heater.....................................................................................................................2- 51
2.6.1 Checking the Contents...........................................................................................................................................2- 51
2.6.2 Turning Off the Host Machine................................................................................................................................2- 51
2.6.3 Installation Procedure............................................................................................................................................2- 51
2.7 Installing the Cassette Heater ..................................................................................................................2- 55
2.7.1 Checking the Contents...........................................................................................................................................2- 55
2.7.2 Turning Off the Host Machine................................................................................................................................2- 55
2.7.3 Mounting the Cassette Heater...............................................................................................................................2- 55
2.8 Installing the Deck Heater ........................................................................................................................2- 59
2.8.1 Unpacking and Checking the Components............................................................................................................2- 59
2.8.2 Installing to the Paper Deck (Cassette Heater Unit-31/32)....................................................................................2- 60

Contents
2.8.3 Installing to the host machine (Cassette Heater Unit-31/32).................................................................................2- 63
2.8.4 Unpacking and Checking the Components ...........................................................................................................2- 66
2.8.5 Installing to the Paper Deck (Cassette Heater Unit-23/25)....................................................................................2- 67
2.8.6 Installing to the host machine (Cassette Heater Unit-23/25).................................................................................2- 70
2.9 Installing the Deck Heater (Large Deck)...................................................................................................2- 73
2.9.1 Unpacking and Checking the Components ...........................................................................................................2- 73
2.9.2 Installing to the paper Deck (Cassette Heater Unit-31/32)....................................................................................2- 74
2.9.3 Unpacking and Checking the Components ...........................................................................................................2- 78
2.9.4 Installing to the paper Deck (Cassette Heater Unit-23/25)....................................................................................2- 79
2.10 Installing the Voice Guidance Kit............................................................................................................2- 83
2.10.1 Checking Items in the Package...........................................................................................................................2- 83
2.10.2 Turning Off the Host Machine..............................................................................................................................2- 84
2.10.3 Installation Procedure .........................................................................................................................................2- 84
Chapter 3 Basic Operation
3.1 Construction ...............................................................................................................................................3- 1
3.1.1 Functional Construction...........................................................................................................................................3- 1
3.1.2 Wiring Diagram of the Major PCBs..........................................................................................................................3- 1
3.1.3 Controlling the Main Motor (M1)..............................................................................................................................3- 2
3.2 Basic Sequence..........................................................................................................................................3- 3
3.2.1 Basic Sequence of Operations (power-on)..............................................................................................................3- 3
Chapter 4 Main Controller
4.1 Construction ...............................................................................................................................................4- 1
4.1.1 Construction/Functions............................................................................................................................................4- 1
4.2 Construction of the Electrical Circuitry........................................................................................................4- 2
4.2.1 Main Controller PCB................................................................................................................................................4- 2
4.2.2 Main Controller PCB (up graded version)................................................................................................................4- 3
4.3 Start-Up Sequence.....................................................................................................................................4- 4
4.3.1 Overview..................................................................................................................................................................4- 4
4.3.2 Start-Up Sequence..................................................................................................................................................4- 5
4.3.3 Action to Take in Response to E602.......................................................................................................................4- 6
4.4 Shut-Down Sequence.................................................................................................................................4- 8
4.4.1 Flow of Operation....................................................................................................................................................4- 8
4.5 Image Processing.......................................................................................................................................4- 8
4.5.1 Overview of the Image Flow....................................................................................................................................4- 8
4.5.2 Configuration of the Image Processing Modules.....................................................................................................4- 9
4.5.3 Reader Input Image Processing............................................................................................................................4- 10
4.5.4 Compression/Expansion/Editing Block..................................................................................................................4- 11
4.5.5 Printer Output Image Processing ..........................................................................................................................4- 12
4.6 Parts Replacement Procedure .................................................................................................................4- 13
4.6.1 Main Controller Box...............................................................................................................................................4- 13
4.6.1.1 Making Preparations..............................................................................................................................................................4- 13
4.6.1.2 Removing the Main Controller Box........................................................................................................................................4- 13
4.6.2 Main Controller PCB..............................................................................................................................................4- 14
4.6.2.1 Making Preparations..............................................................................................................................................................4- 14
4.6.2.2 Removing the Main Controller PCB....................................................................................................................................... 4- 15
4.6.2.3 Removing the Main Controller PCB (up graded version).......................................................................................................4- 15
4.6.2.4 When Replacing the Main Controller PCB............................................................................................................................. 4- 15
4.6.2.5 When Replacing the Main Controller PCB (up graded version)............................................................................................. 4- 16
4.6.3 SDRAM..................................................................................................................................................................4- 17
4.6.3.1 Making Preparations..............................................................................................................................................................4- 17
4.6.3.2 Removing the DDR-SDRAM.................................................................................................................................................. 4- 17
4.6.4 Boot ROM..............................................................................................................................................................4- 18

Contents
4.6.4.1 Making Preparations.............................................................................................................................................................. 4- 18
4.6.4.2 Removing the Boot ROM.......................................................................................................................................................4- 18
4.6.4.3 Removing the Boot ROM (up graded version).......................................................................................................................4- 18
4.6.5 HDD.......................................................................................................................................................................4- 18
4.6.5.1 Points to Note on Handling the Hard Disk .............................................................................................................................4- 18
4.6.5.2 Making Preparations.............................................................................................................................................................. 4- 18
4.6.5.3 Removing the Hard Disk........................................................................................................................................................4- 18
4.6.5.4 Removing the Hard Disk(up graded version)......................................................................................................................... 4- 19
4.6.5.5 Points to Note When Mounting the Hard Disk .......................................................................................................................4- 19
4.6.5.6 After Replacing the Hard Disk................................................................................................................................................ 4- 19
4.6.6 Video PCB .............................................................................................................................................................4- 19
4.6.6.1 Making Preparations.............................................................................................................................................................. 4- 19
4.6.6.2 Removing the Video PCB ...................................................................................................................................................... 4- 20
4.6.7 Reader I/F PCB......................................................................................................................................................4- 20
4.6.7.1 Making Preparations.............................................................................................................................................................. 4- 20
4.6.7.2 Removing the Reader I/F PCB ..............................................................................................................................................4- 21
4.6.8 Controller Fan........................................................................................................................................................4- 21
4.6.8.1 Making Preparations.............................................................................................................................................................. 4- 21
4.6.8.2 Removing the Controller Fan.................................................................................................................................................4- 22
Chapter 5 Original Exposure System
5.1 Construction ...............................................................................................................................................5- 1
5.1.1 Specifications, Controls, and Functions...................................................................................................................5- 1
5.1.2 Specifications, Controls, and Functions...................................................................................................................5- 2
5.1.3 Major Components...................................................................................................................................................5- 3
5.1.4 Major Components...................................................................................................................................................5- 4
5.1.5 Construction of the Control System.........................................................................................................................5- 6
5.1.6 Construction of the Control System.........................................................................................................................5- 6
5.2 Basic Sequence .........................................................................................................................................5- 7
5.2.1 Basic Sequence of Operations ................................................................................................................................5- 7
5.2.2 Basic Sequence of Operations ................................................................................................................................5- 7
5.2.3 Basic Sequence of Operation in Response to a Press on the Start Key.................................................................5- 7
5.2.4 Basic Sequence of Operation in Response to a Press on the Start Key.................................................................5- 8
5.3 Various Control...........................................................................................................................................5- 8
5.3.1 Controlling the Scanner Drive System.....................................................................................................................5- 8
5.3.1.1 Overview.................................................................................................................................................................................. 5- 8
5.3.1.2 Controlling the Scanner Motor ................................................................................................................................................. 5- 9
5.3.1.3 Controlling the Scanner Motor ............................................................................................................................................... 5- 10
5.3.2 Enlargement/Reduction .........................................................................................................................................5- 10
5.3.2.1 Changing the Reproduction Ratio in Main Scanning Direction..............................................................................................5- 10
5.3.2.2 Changing the Reproduction Ratio in Sub Scanning Direction ...............................................................................................5- 11
5.3.2.3 Changing the Reproduction Ratio in Sub Scanning Direction ...............................................................................................5- 11
5.3.3 Controlling the Scanning Lamp..............................................................................................................................5- 11
5.3.3.1 Overview................................................................................................................................................................................ 5- 11
5.3.3.2 Overview................................................................................................................................................................................ 5- 11
5.3.3.3 Scanning Lamp...................................................................................................................................................................... 5- 11
5.3.3.4 Controlling the Activation....................................................................................................................................................... 5- 12
5.3.4 Detecting the Size of Originals...............................................................................................................................5- 12
5.3.4.1 Overview................................................................................................................................................................................ 5- 12
5.3.4.2 Points of Measurement Used for Original Size Identification.................................................................................................5- 12
5.3.4.3 Overview of Operation ........................................................................................................................................................... 5- 14
5.3.4.4 Overview of Operation ........................................................................................................................................................... 5- 15
5.3.5 Dirt Sensor Control ................................................................................................................................................5- 16
5.3.5.1 Dust Detection in Stream Reading Mode............................................................................................................................... 5- 16
5.3.5.2 Dust Detection in Stream Reading Mode............................................................................................................................... 5- 17
5.3.5.3 White Plate Dust Detection Control ....................................................................................................................................... 5- 18
5.3.6 Image Processing..................................................................................................................................................5- 19
5.3.6.1 Overview................................................................................................................................................................................ 5- 19

Contents
5.3.6.2 Overview................................................................................................................................................................................5- 20
5.3.6.3 CCD Drive.............................................................................................................................................................................. 5- 21
5.3.6.4 CCD Drive.............................................................................................................................................................................. 5- 21
5.3.6.5 CCD Output Gain Correction, Offset Correction....................................................................................................................5- 22
5.3.6.6 CCD Output A/D Conversion.................................................................................................................................................5- 22
5.3.6.7 Outline of Shading Correction................................................................................................................................................ 5- 22
5.3.6.8 Shading Adjustment............................................................................................................................................................... 5- 22
5.3.6.9 Shading Correction................................................................................................................................................................5- 22
5.4 Parts Replacement Procedure .................................................................................................................5- 23
5.4.1 CCD Unit ...............................................................................................................................................................5- 23
5.4.1.1 Before Starting the Work........................................................................................................................................................5- 23
5.4.1.2 Removing the CCD Unit.........................................................................................................................................................5- 23
5.4.1.3 When Replacing Components of the Scanning System ........................................................................................................5- 23
5.4.1.4 When Replacing Components of the Scanning System ........................................................................................................5- 23
5.4.2 Copyboard glass....................................................................................................................................................5- 23
5.4.2.1 Removing the Copyboard Glass............................................................................................................................................5- 23
5.4.2.2 Removing the Stream Reading Glass....................................................................................................................................5- 23
5.4.2.3 When Replacing Components of the Scanning System ........................................................................................................5- 24
5.4.2.4 When Replacing Components of the Scanning System ........................................................................................................5- 24
5.4.3 Standard White Plate.............................................................................................................................................5- 24
5.4.3.1 Removing the Standard White Plate...................................................................................................................................... 5- 24
5.4.3.2 When Replacing Components of the Scanning System ........................................................................................................5- 24
5.4.4 Scanning Lamp......................................................................................................................................................5- 25
5.4.4.1 Before Starting the Work........................................................................................................................................................5- 25
5.4.4.2 Before Starting the Work........................................................................................................................................................5- 25
5.4.4.3 Removing the Scanning Lamp............................................................................................................................................... 5- 26
5.4.4.4 When Replacing Components of the Scanning System ........................................................................................................5- 27
5.4.4.5 When Replacing Components of the Scanning System ........................................................................................................5- 27
5.4.5 Reader Controller PCB..........................................................................................................................................5- 27
5.4.5.1 Before Starting the Work........................................................................................................................................................5- 27
5.4.5.2 Removing the Reader Controller PCB................................................................................................................................... 5- 27
5.4.5.3 After Replacing the Reader Controller PCB........................................................................................................................... 5- 28
5.4.5.4 After Replacing the Reader Controller PCB........................................................................................................................... 5- 28
5.4.6 Interface PCB........................................................................................................................................................5- 28
5.4.6.1 Before Starting the Work........................................................................................................................................................5- 28
5.4.6.2 Removing the Interface PCB .................................................................................................................................................5- 28
5.4.6.3 Before Starting the Work........................................................................................................................................................5- 29
5.4.6.4 Removing the Interface PCB .................................................................................................................................................5- 29
5.4.7 Inverter PCB..........................................................................................................................................................5- 30
5.4.7.1 Before Starting the Work........................................................................................................................................................5- 30
5.4.7.2 Removing the Inverter PCB...................................................................................................................................................5- 30
5.4.7.3 When Replacing Components of the Scanning System ........................................................................................................5- 30
5.4.7.4 When Replacing Components of the Scanning System ........................................................................................................5- 30
5.4.8 Scanner Motor.......................................................................................................................................................5- 30
5.4.8.1 Before Starting the Work........................................................................................................................................................5- 30
5.4.8.2 Before Starting the Work........................................................................................................................................................5- 30
5.4.8.3 Removing the Scanner Motor ................................................................................................................................................ 5- 31
5.4.8.4 Mounting the Scanner Motor..................................................................................................................................................5- 31
5.4.9 ADF Open/Close Sensor.......................................................................................................................................5- 31
5.4.9.1 Before Starting the Work........................................................................................................................................................5- 31
5.4.9.2 Removing the ADF Open/Closed Sensor ..............................................................................................................................5- 31
5.4.9.3 Before Starting the Work........................................................................................................................................................5- 32
5.4.9.4 Removing the ADF Open/Closed Sensor 1, 2 ....................................................................................................................... 5- 32
5.4.10 Original Size Sensor............................................................................................................................................5- 33
5.4.10.1 Before Starting the Work......................................................................................................................................................5- 33
5.4.10.2 Removing the Original Size Sensor Unit.............................................................................................................................. 5- 33
5.4.10.3 Removing the Original Size Sensor ..................................................................................................................................... 5- 33
5.4.11 Scanner Home Position Sensor...........................................................................................................................5- 33
5.4.11.1 Before Starting the Work......................................................................................................................................................5- 33
5.4.11.2 Removing the Scanner Home Position Sensor....................................................................................................................5- 34

Contents
5.4.11.3 Before Starting the Work......................................................................................................................................................5- 34
5.4.11.4 Removing the Scanner Home Position Sensor.................................................................................................................... 5- 34
5.4.12 Cooling Fan..........................................................................................................................................................5- 35
5.4.12.1 Before Starting the Work......................................................................................................................................................5- 35
5.4.12.2 Removing the Reader Cooling Fan 1/2................................................................................................................................ 5- 35
5.4.12.3 Before Starting the Work......................................................................................................................................................5- 36
5.4.12.4 Removing the Reader Cooling Fan...................................................................................................................................... 5- 36
5.4.13 Scanner Drive Cable............................................................................................................................................5- 36
5.4.13.1 Before Starting the Work......................................................................................................................................................5- 36
5.4.13.2 Before Starting the Work......................................................................................................................................................5- 37
5.4.13.3 Removing the Scanner Drive Cable..................................................................................................................................... 5- 39
5.4.13.4 Fitting the Scanner Drive Cable...........................................................................................................................................5- 40
5.4.13.5 Adjusting the Position of the No. 1/No. 2 Mirror Base.......................................................................................................... 5- 40
Chapter 6 Laser Exposure
6.1 Construction ...............................................................................................................................................6- 1
6.1.1 Outline of the Laser Exposure System ....................................................................................................................6- 1
6.2 Basic Sequence .........................................................................................................................................6- 3
6.2.1 Basic Sequence of Operations (laser exposure system).........................................................................................6- 3
6.3 Various Controls.........................................................................................................................................6- 3
6.3.1 Controlling the Laser Activation Timing ...................................................................................................................6- 3
6.3.1.1 Turning On and Off the Laser Unit...........................................................................................................................................6- 3
6.3.1.2 Flow of the BD Signal ..............................................................................................................................................................6- 3
6.3.2 Controlling the Intensity of Laser Light.....................................................................................................................6- 4
6.3.2.1 APC Control.............................................................................................................................................................................6- 4
6.3.3 Controlling the Laser Scanner Motor.......................................................................................................................6- 5
6.3.3.1 Outline......................................................................................................................................................................................6- 5
6.3.4 Controlling the Laser Shutter...................................................................................................................................6- 5
6.3.4.1 Controlling the Laser Shutter...................................................................................................................................................6- 5
6.4 Parts Replacement Procedure ...................................................................................................................6- 7
6.4.1 Laser Scanner Unit..................................................................................................................................................6- 7
6.4.1.1 Before Starting the Work.......................................................................................................................................................... 6- 7
6.4.1.2 Removing the Laser Scanner Unit...........................................................................................................................................6- 7
6.4.1.3 When Replacing the Laser Scanner Unit................................................................................................................................. 6- 7
Chapter 7 Image Formation
7.1 Construction ...............................................................................................................................................7- 1
7.1.1 Outline......................................................................................................................................................................7- 1
7.1.2 Major Components...................................................................................................................................................7- 1
7.1.3 Pre-Transfer Exposure LED.....................................................................................................................................7- 2
7.2 Image Formation Process ..........................................................................................................................7- 2
7.2.1 Overview..................................................................................................................................................................7- 2
7.3 Basic Sequence .........................................................................................................................................7- 3
7.3.1 Basic Sequence.......................................................................................................................................................7- 3
7.4 Potential Control.........................................................................................................................................7- 3
7.4.1 Outline......................................................................................................................................................................7- 3
7.4.2 Basics Sequence of Operations...............................................................................................................................7- 4
7.4.3 Determining the Optimum Grid Bias........................................................................................................................7- 5
7.4.4 Grid Bias Corrective Control....................................................................................................................................7- 6
7.4.5 Determining the Optimum Laser Output..................................................................................................................7- 6
7.4.6 Laser Output Corrective Control..............................................................................................................................7- 7
7.4.7 Determining the Optimum Developing Bias.............................................................................................................7- 7
7.4.8 Potential Control for Transparency Mode................................................................................................................7- 8
7.4.9 Target Potential Correction in Each Mode...............................................................................................................7- 9
7.5 Charging Mechanism ...............................................................................................................................7- 11

Contents
7.5.1 Primary Charging Mechanism...............................................................................................................................7- 11
7.5.1.1 Outline.................................................................................................................................................................................... 7- 11
7.5.1.2 Primary Charging Assembly Cleaning Mechanism................................................................................................................7- 12
7.5.1.3 Others....................................................................................................................................................................................7- 13
7.5.2 Dust-Collecting Roller Bias....................................................................................................................................7- 13
7.5.2.1 Outline.................................................................................................................................................................................... 7- 13
7.5.3 Pre-Transfer Charging Mechanism .......................................................................................................................7- 14
7.5.3.1 Outline.................................................................................................................................................................................... 7- 14
7.5.3.2 Controlling the Output to Suit the Environment (fuzzy control).............................................................................................. 7- 15
7.5.3.3 Pre-Transfer Charging Assembly Cleaning Mechanism........................................................................................................7- 16
7.5.3.4 Others....................................................................................................................................................................................7- 16
7.6 Drum Cleaner Unit....................................................................................................................................7- 17
7.6.1 Outline...................................................................................................................................................................7- 17
7.6.2 Detecting the Waste Toner (case full condition)....................................................................................................7- 17
7.7 Developing Assembly...............................................................................................................................7- 18
7.7.1 Outline...................................................................................................................................................................7- 18
7.7.2 Controlling the Developing Assembly....................................................................................................................7- 19
7.7.3 Controlling the Toner Cartridge Drive Mechanism ................................................................................................7- 20
7.7.4 Controlling the Developing Bias ............................................................................................................................7- 21
7.7.5 Detecting the Toner Level and Controlling the Toner Supply Mechanism ............................................................7-22
7.8 Transfer Mechanism.................................................................................................................................7- 25
7.8.1 Transfer Guide Bias...............................................................................................................................................7- 25
7.8.1.1 Overview................................................................................................................................................................................7- 25
7.8.1.2 Controlling the Output to Suit the Environment......................................................................................................................7- 26
7.8.2 Transfer Charging Mechanism..............................................................................................................................7- 26
7.8.2.1 Outline.................................................................................................................................................................................... 7- 26
7.8.2.2 Controlling the Output to Suit the Environment (fuzzy control).............................................................................................. 7- 27
7.8.2.3 Correcting the Output at the Trailing Edge of Paper..............................................................................................................7- 28
7.8.2.4 Transfer Charging Assembly Cleaning Mechanism............................................................................................................... 7- 28
7.8.2.5 Others....................................................................................................................................................................................7- 29
7.9 Separation Mechanism.............................................................................................................................7- 29
7.9.1 Separation Charging Mechanism..........................................................................................................................7- 29
7.9.1.1 Outline.................................................................................................................................................................................... 7- 29
7.9.1.2 Correcting the Output to Suit the Environment and the Toner Deposit..................................................................................7- 30
7.9.1.3 Correcting the Output upon Detection of Leakage.................................................................................................................7- 31
7.9.1.4 Others....................................................................................................................................................................................7- 31
7.10 Parts Replacement Procedure................................................................................................................7- 32
7.10.1 Process Unit ........................................................................................................................................................7- 32
7.10.1.1 Before Starting the Work......................................................................................................................................................7- 32
7.10.1.2 Removing the Process Unit..................................................................................................................................................7- 32
7.10.1.3 Mounting the Process Unit...................................................................................................................................................7- 32
7.10.2 Pre-Exposure Lamp.............................................................................................................................................7- 33
7.10.2.1 Removing the Pre-Exposure Lamp Unit...............................................................................................................................7- 33
7.10.3 Primary Charging Assembly................................................................................................................................7- 33
7.10.3.1 Removing the Primary Charging Assembly .........................................................................................................................7- 33
7.10.4 Pre-Transfer Charging Assembly ........................................................................................................................7- 33
7.10.4.1 Removing the Pre-Transfer Charging Assembly.................................................................................................................. 7- 33
7.10.5 Photosensitive Drum............................................................................................................................................7- 34
7.10.5.1 Points to Note About Handling the Photosensitive Drum.....................................................................................................7- 34
7.10.5.2 Removing the Photosensitive Drum..................................................................................................................................... 7- 34
7.10.6 Drum Cleaner Unit...............................................................................................................................................7- 35
7.10.6.1 Construction.........................................................................................................................................................................7- 35
7.10.6.2 Removing the Cleaning Blade..............................................................................................................................................7- 35
7.10.6.3 Mounting the Cleaning Blade...............................................................................................................................................7- 35
7.10.6.4 Removing the Blade Vibrating Unit ...................................................................................................................................... 7- 35
7.10.7 Photosensitive Drum Heater................................................................................................................................7- 36
7.10.7.1 Replacing the Photosensitive Drum Heater......................................................................................................................... 7- 36
7.10.8 Sub Hopper..........................................................................................................................................................7- 36
7.10.8.1 Before Starting the Work......................................................................................................................................................7- 36

Contents
7.10.8.2 Removing the Sub Hopper Unit ...........................................................................................................................................7- 36
7.10.9 Developing Assembly...........................................................................................................................................7- 37
7.10.9.1 Before Starting the Work......................................................................................................................................................7- 37
7.10.9.2 Removing the Developing Assembly ................................................................................................................................... 7- 38
7.10.9.3 Points to Note When the Developing Assembly...................................................................................................................7- 38
7.10.9.4 Removing the Hopper .......................................................................................................................................................... 7- 38
7.10.10 Developing Cylinder...........................................................................................................................................7- 39
7.10.10.1 Removing the Developing Cylinder....................................................................................................................................7- 39
7.10.11 Developing Blade...............................................................................................................................................7- 40
7.10.11.1 Before Starting the Work....................................................................................................................................................7- 40
7.10.11.2 Removing the Blade Unit.................................................................................................................................................... 7- 40
7.10.11.3 Mounting the Blade ............................................................................................................................................................7- 40
7.10.12 Developing Cylinder Deceleration Clutch...........................................................................................................7- 40
7.10.12.1 Before Starting the Work....................................................................................................................................................7- 40
7.10.12.2 Removing the Developing Cylinder Decelerating Clutch....................................................................................................7- 40
7.10.13 Developing Cylinder Clutch................................................................................................................................7- 41
7.10.13.1 Before Starting the Work....................................................................................................................................................7- 41
7.10.13.2 Removing the Developing Cylinder Clutch.........................................................................................................................7- 41
7.10.14 Transfer/Separation Charging Assembly ...........................................................................................................7- 41
7.10.14.1 Removing the Transfer/Separation Charging Assembly ....................................................................................................7- 41
7.10.15 Pre-Transfer Exposure LED...............................................................................................................................7- 42
7.10.15.1 Removing the Pre-Transfer Exposure LED........................................................................................................................ 7- 42
7.10.16 Separation Claw/Separation Claw Drive Assembly............................................................................................7- 42
7.10.16.1 Separation Claw/Separation Claw Drive Assembly............................................................................................................7- 42
7.10.17 Potential Sensor.................................................................................................................................................7- 43
7.10.17.1 Removing the Potential Sensor Unit ..................................................................................................................................7- 43
7.10.17.2 Removing the Potential Control PCB.................................................................................................................................7- 43
7.10.17.3 When Replacing the Potential Sensor/Potential Control PCB............................................................................................7- 44
7.10.18 Dust-Collecting Roller.........................................................................................................................................7- 44
7.10.18.1 Removing the Dust-Collecting Roller .................................................................................................................................7- 44
7.10.19 Charging Wire ....................................................................................................................................................7- 45
7.10.19.1 Outline................................................................................................................................................................................7- 45
7.10.19.2 Removing the Wire Cleaner for the Primary Charging Assembly ......................................................................................7- 45
7.10.19.3 Removing the Wire Cleaner of the Transfer Separation Charging Assembly ....................................................................7- 45
7.10.19.4 Stringing the Charging Wire...............................................................................................................................................7- 46
7.10.19.5 Stringing the Grid of the Primary Charging Assembly........................................................................................................ 7- 47
7.10.19.6 Adjusting the Height of the Charging Wire.........................................................................................................................7- 47
Chapter 8 Pickup/Feeding System
8.1 Construction ...............................................................................................................................................8- 1
8.1.1 Specifications and Construction...............................................................................................................................8- 1
8.1.2 Arrangement of Rollers and Sensors.......................................................................................................................8- 1
8.1.3 Control System ........................................................................................................................................................8- 2
8.1.4 Controlling the Pickup Motor (M2) ...........................................................................................................................8- 3
8.1.5 Index Paper Attachment ..........................................................................................................................................8- 4
8.2 Basic Sequence .........................................................................................................................................8- 5
8.2.1 Right Deck ...............................................................................................................................................................8- 5
8.2.2 Pickup from the cassette 4.......................................................................................................................................8- 5
8.3 Detecting Jams...........................................................................................................................................8- 6
8.3.1 Jam Detection Outline..............................................................................................................................................8- 6
8.3.1.1 Outline......................................................................................................................................................................................8- 6
8.3.2 Delay Jams..............................................................................................................................................................8- 7
8.3.2.1 Cassette Pickup (Right deck, Left deck, cassette 3, 4)............................................................................................................ 8- 7
8.3.2.2 Other Delay Jams ....................................................................................................................................................................8- 7
8.3.3 Stationary Jams.......................................................................................................................................................8- 8
8.3.3.1 Common Stationary Jams........................................................................................................................................................8- 8
8.3.3.2 Stationary Jam at Power-On.................................................................................................................................................... 8- 9
8.4 Cassette Pick-Up Unit ................................................................................................................................8- 9

Contents
8.4.1 Outline.....................................................................................................................................................................8- 9
8.4.2 Detecting the Presence/Absence of Paper............................................................................................................8- 10
8.4.3 Detecting the Level of Paper.................................................................................................................................8- 11
8.4.4 Cassette 3/4 ..........................................................................................................................................................8- 12
8.4.5 Markings on the Width Guide Rail.........................................................................................................................8- 13
8.4.6 Paper Size.............................................................................................................................................................8- 13
8.5 Manual Feed Pickup Unit .........................................................................................................................8- 16
8.5.1 Pickup Operation...................................................................................................................................................8- 16
8.5.2 Detecting the Paper Size.......................................................................................................................................8- 16
8.6 Deck .........................................................................................................................................................8- 17
8.6.1 Outline...................................................................................................................................................................8- 17
8.6.2 Lifter Limiter (deck right/left)..................................................................................................................................8- 18
8.6.3 Detecting the Presence/Absence of Paper............................................................................................................8- 19
8.6.4 Detecting the Level of Paper.................................................................................................................................8- 20
8.6.5 Cassette Deck Right/Left.......................................................................................................................................8- 21
8.7 Registration Unit.......................................................................................................................................8- 22
8.7.1 Outline...................................................................................................................................................................8- 22
8.7.2 Sequence of Operations (registration brake).........................................................................................................8- 22
8.8 Duplex Feeding Unit.................................................................................................................................8- 23
8.8.1 Copying on the First Side......................................................................................................................................8- 23
8.8.2 Copying on the Second Side.................................................................................................................................8- 23
8.8.3 Sequence of Operations........................................................................................................................................8- 24
8.8.4 Controlling the reversal motor (M11).....................................................................................................................8- 24
8.8.5 Controlling the duplexing feeder motor (M12).......................................................................................................8- 25
8.8.6 No-Stacking Operation..........................................................................................................................................8- 26
8.8.7 Detecting the Horizontal Registration Position ......................................................................................................8- 30
8.8.8 Controlling the Horizontal Registration Motor (M15) .............................................................................................8- 32
8.9 Delivery.....................................................................................................................................................8- 33
8.9.1 Reversal Delivery ..................................................................................................................................................8- 33
8.10 Detecting the Double-Feed.....................................................................................................................8- 34
8.10.1 Detecting Double Feeding...................................................................................................................................8- 34
8.11 Parts Replacement Procedure................................................................................................................8- 36
8.11.1 Cassette Pickup Assembly..................................................................................................................................8- 36
8.11.1.1 Removing the Right Deck / Cassette Pickup Assembly.......................................................................................................8- 36
8.11.1.2 Removing the Vertical Path 3/4 Sensor and the Cassette 3/4 Pickup Sensor.....................................................................8- 36
8.11.2 Cassette Lifter Motor ...........................................................................................................................................8- 36
8.11.2.1 Removing the Lifter Motor (M16/M17) of the Cassette (3/4)................................................................................................ 8- 36
8.11.3 Right Deck Pickup Assembly...............................................................................................................................8- 36
8.11.3.1 Removing the Right Deck / Cassette Pickup Assembly.......................................................................................................8- 36
8.11.4 Left Deck Pickup Assembly.................................................................................................................................8- 37
8.11.4.1 Removing the Left Deck Pickup Assembly ..........................................................................................................................8- 37
8.11.5 Left Deck Pickup Sensor .....................................................................................................................................8- 37
8.11.5.1 Removing the Left Deck Pickup Sensor...............................................................................................................................8- 37
8.11.6 Right Deck Pickup Sensor...................................................................................................................................8- 37
8.11.6.1 Removing the Right Deck Feed Sensor/Right Deck Pickup Sensor....................................................................................8- 37
8.11.7 Manual Tray Assembly........................................................................................................................................8- 38
8.11.7.1 Removing the Manual Feeder Tray Unit..............................................................................................................................8- 38
8.11.7.2 Fitting the Side Guide Timing Belt for the Manual Feed Tray Assembly..............................................................................8- 38
8.11.8 Manual Feed Pull-Out Roller Unit........................................................................................................................8- 39
8.11.8.1 Removing the Manual Feeder Pull-Off Roller Unit...............................................................................................................8- 39
8.11.9 Manual Pickup Roller...........................................................................................................................................8- 39
8.11.9.1 Removing the Pickup Roller................................................................................................................................................. 8- 39
8.11.9.2 Mounting the Pickup Roller..................................................................................................................................................8- 39
8.11.10 Manual Feed Roller............................................................................................................................................8- 40
8.11.10.1 Removing the Feeding Roller.............................................................................................................................................8- 40
8.11.10.2 Orientation of the Feeding Roller .......................................................................................................................................8- 40
8.11.10.3 Removing the multiple curling prevention roller .................................................................................................................8- 40

Contents
8.11.10.4 Mounting the multiple curling prevention roller...................................................................................................................8- 41
8.11.11 Manual Separation Roller...................................................................................................................................8- 41
8.11.11.1 Removing the Separation Roller ........................................................................................................................................ 8- 41
8.11.12 Manual Feed Tray paper sensor........................................................................................................................8- 41
8.11.12.1 Removing the Manual Feed Tray Paper Sensor................................................................................................................8- 41
8.11.13 Manual Feed Pickup Solenoid............................................................................................................................8- 42
8.11.13.1 Position of the Pickup Roller Release Solenoid of the Manual Feed Tray......................................................................... 8- 42
8.11.14 Registration Roller..............................................................................................................................................8- 43
8.11.14.1 Removing the Pre-Registration Roller................................................................................................................................ 8- 43
8.11.15 Registration Clutch.............................................................................................................................................8- 43
8.11.15.1 Removing the Registration Clutch...................................................................................................................................... 8- 43
8.11.16 Registration Brake Clutch...................................................................................................................................8- 44
8.11.16.1 Removing the Registration Brake Clutch ...........................................................................................................................8- 44
8.11.17 Fixing/Feed Unit.................................................................................................................................................8- 44
8.11.17.1 Removing the Fixing/Feed Unit..........................................................................................................................................8- 44
8.11.18 Feeding Roller....................................................................................................................................................8- 44
8.11.18.1 Removing the Feeding Roller.............................................................................................................................................8- 44
8.11.18.2 Orientation of the Feeding Roller of the Deck/Cassette Pickup Assembly.........................................................................8- 44
8.11.19 Vertical Path Roller.............................................................................................................................................8- 44
8.11.19.1 Removing the Vertical Path Roller 1/3/4 ............................................................................................................................ 8- 44
8.11.19.2 Removing the Vertical Path Roller 2 .................................................................................................................................. 8- 45
8.11.20 Fixing Feeding Unit Releasing Lever Sensor.....................................................................................................8- 45
8.11.20.1 Removing the Fixing Feeding Unit Releasing lever Sensor...............................................................................................8- 45
8.11.21 Feeding Belt.......................................................................................................................................................8- 45
8.11.21.1 Removing the Feeding Belt................................................................................................................................................8- 45
8.11.22 Duplexing Unit....................................................................................................................................................8- 46
8.11.22.1 Removing the Duplexing Unit............................................................................................................................................. 8- 46
8.11.22.2 Removing the Reversal Motor............................................................................................................................................ 8- 46
8.11.22.3 Removing the Front Cover of the Duplexing Unit............................................................................................................... 8- 47
8.11.22.4 Removing the Duplex Left Feed Motor............................................................................................................................... 8- 47
8.11.22.5 Removing the Duplex Right Feed Motor............................................................................................................................8- 47
8.11.22.6 Removing the Reversing Flapper Solenoid........................................................................................................................ 8- 47
8.11.22.7 Removing the Left Deck Feed Sensor ...............................................................................................................................8- 47
8.11.22.8 Removing the Horizontal Registration Motor...................................................................................................................... 8- 47
8.11.22.9 Removing the Deck (left) Draw- Out Clutch/Lower Feeder Middle Clutch ......................................................................... 8- 48
8.11.22.10 Removing the Lower Feeding Right Clutch...................................................................................................................... 8- 48
8.11.22.11 Removing the Pre-Confluence Sensor.............................................................................................................................8- 48
8.11.22.12 Removing the Post-Confluence Sensor ...........................................................................................................................8- 48
8.11.22.13 Removing the Front Deck (lifter) Draw-Out Sensor.......................................................................................................... 8- 49
8.11.22.14 Removing the Horizontal Registration Sensor..................................................................................................................8- 49
8.11.23 Separation Roller................................................................................................................................................8- 49
8.11.23.1 Removing the Separation Roller ........................................................................................................................................ 8- 49
8.11.23.2 Orientation of the Separation Roller................................................................................................................................... 8- 50
8.11.24 Double Feeding Detection Sensor ( Transmission )...........................................................................................8- 50
8.11.24.1 Before Starting the Work....................................................................................................................................................8- 50
8.11.24.2 Removing the Double-Feed Sensor (transmitting).............................................................................................................8- 51
8.11.25 Double Feeding Detection Sensor ( Reception )................................................................................................8- 51
8.11.25.1 Before Starting the Work....................................................................................................................................................8- 51
8.11.25.2 Removing the Double-Feed Sensor (receiving).................................................................................................................8- 51
Chapter 9 Fixing System
9.1 Construction ...............................................................................................................................................9- 1
9.1.1 Outline......................................................................................................................................................................9- 1
9.1.2 Major Components...................................................................................................................................................9- 1
9.1.3 Overview of the Fixing Drive System.......................................................................................................................9- 2
9.1.4 Controlling the Fixing Roller Drive ...........................................................................................................................9- 3
9.1.5 Controlling the Cleaning Web Drive.........................................................................................................................9- 3
9.1.6 Controlling the Thermistor Reciprocating Mechanism.............................................................................................9- 4

Contents
9.1.7 Controlling the Upper Separation Claw Reciprocating Mechanism.........................................................................9- 4
9.1.8 Controlling the Fixing Inlet Sensor Drive.................................................................................................................9- 5
9.2 Basic Sequence..........................................................................................................................................9- 6
9.2.1 Basic Sequence of Operations................................................................................................................................9- 6
9.3 Various Control Mechanisms......................................................................................................................9- 6
9.3.1 Controlling the Fixing Roller Temperature...............................................................................................................9- 6
9.3.1.1 Controlling the Down Sequence .............................................................................................................................................. 9- 6
9.3.1.2 Transparency Mode................................................................................................................................................................. 9- 7
9.3.1.3 Heavy Paper Mode ..................................................................................................................................................................9- 8
9.3.1.4 Power Save Mode.................................................................................................................................................................... 9- 8
9.4 Protective Functions...................................................................................................................................9- 9
9.4.1 Error Detection ........................................................................................................................................................9- 9
9.5 Parts Replacement Procedure .................................................................................................................9- 11
9.5.1 Fixing Unit..............................................................................................................................................................9- 11
9.5.1.1 Removing the Fixing Assembly.............................................................................................................................................. 9- 11
9.5.2 Upper Fixing Roller................................................................................................................................................9- 12
9.5.2.1 Removing the Fixing Upper Roller.........................................................................................................................................9- 12
9.5.2.2 Mounting the Fixing Upper Roller .......................................................................................................................................... 9- 13
9.5.3 Lower Fixing Roller................................................................................................................................................9- 13
9.5.3.1 Removing the Lower Fixing Roller.........................................................................................................................................9- 13
9.5.3.2 Adjusting the Lower Roller Pressure (nip) ............................................................................................................................. 9- 13
9.5.4 External Delivery Roller.........................................................................................................................................9- 14
9.5.4.1 Removing the External Delivery Roller..................................................................................................................................9- 14
9.5.5 Internal Delivery Roller ..........................................................................................................................................9- 14
9.5.5.1 Removing the Internal Delivery Roller ................................................................................................................................... 9- 14
9.5.6 Main Thermistor.....................................................................................................................................................9- 14
9.5.6.1 Removing the Main Thermistor.............................................................................................................................................. 9- 14
9.5.6.2 Mounting the Main Thermistor ............................................................................................................................................... 9- 15
9.5.7 Sub Thermistor......................................................................................................................................................9- 15
9.5.7.1 Removing the Sub Thermistor...............................................................................................................................................9- 15
9.5.8 Thermal Switch......................................................................................................................................................9- 15
9.5.8.1 Removing the Thermal Switch Unit........................................................................................................................................ 9- 15
9.5.8.2 Mounting the Thermal Switch Unit.........................................................................................................................................9- 16
9.5.9 Fixing Heater.........................................................................................................................................................9- 16
9.5.9.1 Removing the Main/Sub Heater.............................................................................................................................................9- 16
9.5.9.2 Mounting the Main/Sub Heater .............................................................................................................................................. 9- 16
9.5.9.3 Points to Note When Mounting the Fixing Heater.................................................................................................................. 9- 16
9.5.10 Fixing Cleaning Belt.............................................................................................................................................9- 17
9.5.10.1 Removing the Fixing Cleaning Belt...................................................................................................................................... 9- 17
9.5.10.2 Mounting the Fixing Cleaning Belt .......................................................................................................................................9- 17
9.5.11 Claw Jam Sensor.................................................................................................................................................9- 18
9.5.11.1 Removing the Claw Jam Sensor.......................................................................................................................................... 9- 18
9.5.12 External Delivery Sensor.....................................................................................................................................9- 18
9.5.12.1 Remove the External Delivery Sensor.................................................................................................................................9- 18
9.5.13 Internal Delivery Sensor ......................................................................................................................................9- 18
9.5.13.1 Removing the Internal Delivery Sensor................................................................................................................................ 9- 18
9.5.14 Reversal Sensor..................................................................................................................................................9- 19
9.5.14.1 Removing the Reversal Sensor ...........................................................................................................................................9- 19
9.5.15 Fixing Inlet Sensor...............................................................................................................................................9- 19
9.5.15.1 Before Starting the Work......................................................................................................................................................9- 19
9.5.15.2 Removing the Fixing Inlet Sensor/Fixing Inlet HP Sensor ................................................................................................... 9- 19
9.5.16 Fixing/Feeding Outlet Sensor..............................................................................................................................9- 20
9.5.16.1 Remove the Fixing/Feeder Unit Outlet Sensor ....................................................................................................................9- 20
9.5.17 Delivery Speed Switch Clutch..............................................................................................................................9- 20
9.5.17.1 Removing the Delivery Speed Switching Clutch..................................................................................................................9- 20
9.5.18 Upper Separation Claw........................................................................................................................................9- 20
9.5.18.1 Removing the Upper Separation Claw.................................................................................................................................9- 20
9.5.19 Lower Separation Claw........................................................................................................................................9- 20

Contents
9.5.19.1 Removing the Lower Separation Claw................................................................................................................................. 9- 20
Chapter 10 External and Controls
10.1 Control Panel..........................................................................................................................................10- 1
10.1.1 Overview..............................................................................................................................................................10- 1
10.2 Counters.................................................................................................................................................10- 1
10.2.1 Soft Counter.........................................................................................................................................................10- 1
10.3 Fans........................................................................................................................................................10- 2
10.3.1 Fans.....................................................................................................................................................................10- 2
10.3.2 Fans.....................................................................................................................................................................10- 4
10.3.3 Sequence of Fan Operation.................................................................................................................................10- 5
10.4 Power Supply System ............................................................................................................................10- 6
10.4.1 Power Supply.......................................................................................................................................................10- 6
10.4.1.1 Overview of the Power Supply System................................................................................................................................10- 6
10.4.2 Protection Function..............................................................................................................................................10- 6
10.4.2.1 Protective Functions............................................................................................................................................................. 10- 6
10.4.3 Backup Battery.....................................................................................................................................................10- 7
10.4.3.1 Back-Up Battery................................................................................................................................................................... 10- 7
10.4.4 Energy-Saving Function.......................................................................................................................................10- 8
10.4.4.1 Overview .............................................................................................................................................................................. 10- 8
10.4.4.2 SNMP setup......................................................................................................................................................................... 10- 9
10.5 Parts Replacement Procedure .............................................................................................................10- 11
10.5.1 External Covers..................................................................................................................................................10- 11
10.5.1.1 Front Cover ........................................................................................................................................................................ 10- 11
10.5.1.2 Rear Cover.........................................................................................................................................................................10- 11
10.5.1.3 Inside Upper Cover ............................................................................................................................................................ 10- 11
10.5.1.4 Fixing/Feeding Unit Cover.................................................................................................................................................. 10- 11
10.5.1.5 Upper Vertical Path Cover .................................................................................................................................................10- 12
10.5.1.6 Upper Front Cover Unit...................................................................................................................................................... 10- 12
10.5.1.7 Upper Rear Cover..............................................................................................................................................................10- 12
10.5.1.8 Main Controller Box Cover................................................................................................................................................. 10- 12
10.5.1.9 System Connector Cover...................................................................................................................................................10- 12
10.5.1.10 Reader Controller Cover ..................................................................................................................................................10- 13
10.5.2 Left Pickup Drive Assembly ...............................................................................................................................10- 13
10.5.2.1 Removing the Left Pickup Drive Assembly ........................................................................................................................ 10- 13
10.5.3 Pickup Drive Assembly ......................................................................................................................................10- 13
10.5.3.1 Removing the Pickup Drive Assembly ...............................................................................................................................10- 13
10.5.4 Developing Drive Assembly...............................................................................................................................10- 14
10.5.4.1 Removing the Developing Drive Assembly........................................................................................................................ 10- 14
10.5.5 Vertical Path Drive Assembly.............................................................................................................................10- 14
10.5.5.1 Removing the Vertical Path Drive Assembly......................................................................................................................10- 14
10.5.6 Waste Toner Drive Assembly.............................................................................................................................10- 15
10.5.6.1 Removing the Waste Toner Drive Assembly .....................................................................................................................10- 15
10.5.7 Multifeeder Pickup Drive Assembly....................................................................................................................10- 15
10.5.7.1 Removing the Multifeeder Pickup Drive Assembly ............................................................................................................ 10- 15
10.5.8 Lifter Drive Assembly.........................................................................................................................................10- 15
10.5.8.1 Removing the Lifter Drive Assembly (right deck)...............................................................................................................10- 15
10.5.8.2 Removing the Lifter Drive Assembly (left deck) .................................................................................................................10- 16
10.5.9 Main Drive Assembly .........................................................................................................................................10- 16
10.5.9.1 Removing the Main Drive Assembly ..................................................................................................................................10- 16
10.5.10 Drum Drive Assembly.......................................................................................................................................10- 16
10.5.10.1 Removing the Drum Drive Assembly ...............................................................................................................................10- 16
10.5.11 Cassette Pickup Drive Assembly .....................................................................................................................10- 17
10.5.11.1 Removing the Cassette Pickup Drive Assembly..............................................................................................................10- 17
10.5.12 Power Supply Unit............................................................................................................................................10- 18
10.5.12.1 Removing the Power Supply Unit..................................................................................................................................... 10- 18
10.5.13 Control Panel....................................................................................................................................................10- 18

Contents
10.5.13.1 Removing the Control Panel ............................................................................................................................................10- 18
10.5.13.2 Removing the Control Panel Interface PCB.....................................................................................................................10- 19
10.5.14 Control Panel LCD Unit....................................................................................................................................10- 19
10.5.14.1 Before Starting the Work..................................................................................................................................................10- 19
10.5.14.2 Removing the Control Panel LCD....................................................................................................................................10- 20
10.5.15 Cover Switch Assembly...................................................................................................................................10- 20
10.5.15.1 Removing the Front Cover Switch Assembly...................................................................................................................10- 20
10.5.16 Manual Feed Tray Switch Assembly................................................................................................................10- 20
10.5.16.1 Removing the Manual Feed Tray Switch Assembly......................................................................................................... 10- 20
10.5.17 Drum Heater Switch Assembly........................................................................................................................10- 21
10.5.17.1 Removing the Drum Heater Switch Assembly .................................................................................................................10- 21
10.5.18 DC Controller PCB...........................................................................................................................................10- 21
10.5.18.1 Removing the DC Controller PCB....................................................................................................................................10- 21
10.5.18.2 After Replacing the DC Controller PCB............................................................................................................................10- 21
10.5.19 Control Panel Inverter PCB..............................................................................................................................10- 21
10.5.19.1 Before Starting the Work..................................................................................................................................................10- 21
10.5.19.2 Removing the Control Panel Inverter PCB.......................................................................................................................10- 22
10.5.20 Control Panel Key Switch PCB........................................................................................................................10- 22
10.5.20.1 Before Starting the Work..................................................................................................................................................10- 22
10.5.20.2 Removing the Control Panel KEY PCB............................................................................................................................10- 22
10.5.21 Control Panel Family PCB...............................................................................................................................10- 22
10.5.21.1 Before Starting the Work..................................................................................................................................................10- 22
10.5.21.2 Removing the Control Panel LED PCB............................................................................................................................10- 23
10.5.22 Control Panel CPU PCB..................................................................................................................................10- 23
10.5.22.1 Before Starting the Work..................................................................................................................................................10- 23
10.5.22.2 Removing the Control Panel CPU PCB ........................................................................................................................... 10- 23
10.5.23 AC Driver PCB.................................................................................................................................................10- 23
10.5.23.1 Before Starting the Work..................................................................................................................................................10- 23
10.5.23.2 Removing the AC Driver PCB .......................................................................................................................................... 10- 23
10.5.24 All Night Power Supply PCB............................................................................................................................10- 24
10.5.24.1 Before Starting the Work..................................................................................................................................................10- 24
10.5.24.2 Removing the All Night Power Supply PCB .....................................................................................................................10- 24
10.5.25 Relay PCB .......................................................................................................................................................10- 24
10.5.25.1 Removing the Relay PCB................................................................................................................................................. 10- 24
10.5.26 High-Voltage Transformer (AC).......................................................................................................................10- 24
10.5.26.1 Removing the High-Voltage Transformer Assembly (AC)................................................................................................ 10- 24
10.5.27 HV-AC PCB .....................................................................................................................................................10- 24
10.5.27.1 Removing the HV-AC PCB............................................................................................................................................... 10- 24
10.5.28 HV-DC PCB.....................................................................................................................................................10- 25
10.5.28.1 Removing the HV-DC PCB .............................................................................................................................................. 10- 25
10.5.28.2 After Replacing the HV-DC PCB......................................................................................................................................10- 25
10.5.29 High-Voltage PCB............................................................................................................................................10- 25
10.5.29.1 Removing the High-Voltage Assembly............................................................................................................................. 10- 25
10.5.30 Motor Driver PCB.............................................................................................................................................10- 26
10.5.30.1 Before Starting the Work..................................................................................................................................................10- 26
10.5.30.2 Removing the Fixing Inlet Sensor Lift Motor Driver PCB .................................................................................................10- 26
10.5.31 Transceiver PCB..............................................................................................................................................10- 26
10.5.31.1 Before Starting the Work..................................................................................................................................................10- 26
10.5.31.2 Removing the Transceiver PCB.......................................................................................................................................10- 27
10.5.32 Double Feeding Detection PCB ( Transmission ) ............................................................................................10- 27
10.5.32.1 Before Starting the Work..................................................................................................................................................10- 27
10.5.32.2 Removing the Double-Feed Detection Unit (transmitting)................................................................................................10- 27
10.5.33 Double Feeding Detection PCB ( Reception ) .................................................................................................10- 28
10.5.33.1 Before Starting the Work..................................................................................................................................................10- 28
10.5.33.2 Removing the Double-Feed Detection Unit (reception)....................................................................................................10- 28
10.5.34 Fixing Heat Discharge Fan ..............................................................................................................................10- 28
10.5.34.1 Removing the Fixing Heat Discharge Fan (FM2).............................................................................................................10- 28
10.5.35 Laser Cooling Fan............................................................................................................................................10- 28
10.5.35.1 Removing the Laser Motor Cooling Fan (FM1)................................................................................................................10- 28

Contents
10.5.35.2 Removing the Laser Cooling Fan 1 (FM3).......................................................................................................................10- 28
10.5.36 De-Curling Fan.................................................................................................................................................10- 28
10.5.36.1 Removing the Curl-Removing Fan...................................................................................................................................10- 28
10.5.37 Drum Fan .........................................................................................................................................................10- 29
10.5.37.1 Removing the Drum Fan (FM8)........................................................................................................................................ 10- 29
10.5.38 Pre-Transfer Charging Assembly Fan..............................................................................................................10- 29
10.5.38.1 Removing the Pre-Transfer Charging Assembly Fan (FM10)..........................................................................................10- 29
10.5.39 Power Supply Cooling Fan 1............................................................................................................................10- 30
10.5.39.1 Removing the Power Supply Cooling Fan 1 (FM11)........................................................................................................10- 30
10.5.40 Power Supply Cooling Fan 2............................................................................................................................10- 30
10.5.40.1 Removing the Power Supply Cooling Fan 2 (FM12)........................................................................................................10- 30
10.5.41 Separation Fan.................................................................................................................................................10- 30
10.5.41.1 Removing the Separation Fan (FM13).............................................................................................................................10- 30
10.5.42 Developing Fan................................................................................................................................................10- 31
10.5.42.1 Removing the Developing Fan (FM15) ............................................................................................................................10- 31
10.5.43 Delivery Anti-Adhesion Fan..............................................................................................................................10- 31
10.5.43.1 Removing the Delivery Anti-Adhesion Fan (FM17)..........................................................................................................10- 31
10.5.44 Duplex Feed Fan..............................................................................................................................................10- 31
10.5.44.1 Removing the Duplex Feed Fan (FM19)..........................................................................................................................10- 31
10.5.45 Separation Heat Discharge Fan.......................................................................................................................10- 31
10.5.45.1 Removing the Separation Heat Discharge Fan (FM20) ...................................................................................................10- 31
10.5.46 Reader Heat Discharge Fan 2..........................................................................................................................10- 32
10.5.46.1 Removing the Reader Heat Discharge Fan 2 ..................................................................................................................10- 32
10.5.47 Fixing Inlet Sensor Motor .................................................................................................................................10- 32
10.5.47.1 Before Starting the Work..................................................................................................................................................10- 32
10.5.47.2 Removing the Fixing Inlet Sensor Lifter Motor................................................................................................................. 10- 32
Chapter 11 MEAP
11.1 MEAP .....................................................................................................................................................11- 1
11.1.1 Overview..............................................................................................................................................................11- 1
11.1.2 MEAP Counter.....................................................................................................................................................11- 1
11.1.3 Construction of the MEAP Platform .....................................................................................................................11- 1
11.1.4 Checking the Operating Environment..................................................................................................................11- 2
11.1.5 Setting Up the Network........................................................................................................................................11- 5
11.1.6 Setting the method to login to SMS......................................................................................................................11- 6
11.1.7 Login to SMS......................................................................................................................................................11- 10
11.1.8 Checking Application List...................................................................................................................................11- 12
11.1.9 Starting and Stopping a MEAP Application........................................................................................................11- 13
11.1.10 Checking the Platform Information...................................................................................................................11- 14
11.1.11 MEAP Specifications........................................................................................................................................11- 15
11.1.12 Checking the System Information of a MEAP Application with SMS...............................................................11- 16
11.1.13 Printing the System Information of a MEAP Application ..................................................................................11- 17
11.1.14 Reference (Application System Information)....................................................................................................11- 18
11.1.15 Installing an Application....................................................................................................................................11- 19
11.1.16 MEAP Enterprise Service Manager..................................................................................................................11- 21
11.1.17 Adding a License File.......................................................................................................................................11- 22
11.1.18 Disabling a License File (suspending a license) ..............................................................................................11- 24
11.1.19 Downloading/Removing an Invalidated License File........................................................................................11- 26
11.1.20 Reusable license..............................................................................................................................................11- 28
11.1.21 License for forwarding......................................................................................................................................11- 28
11.1.22 Uninstalling an Application...............................................................................................................................11- 31
11.1.23 Changing Login Services .................................................................................................................................11- 32
11.1.24 Initializing the Password...................................................................................................................................11- 36
11.1.25 Creating a Backup for MEAP Application Area, Formatting the Hard Disk, Restoring the MEAP Application Area
with the Backup, Using the SST (Service Support Tool)..........................................................................................11- 37
11.1.26 Replacing the Hard Disk Drive.........................................................................................................................11- 39