Canon iR C1020 Series User manual

Sep 8 2008
Service Manual
iR C1020 Series
iR C1021i

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 of Pickup/Delivery Options...................................................................................................1- 1
1.1.2 System Configuration of Print/Send Options...........................................................................................................1- 2
1.1.3 Functions of Print/Send Options..............................................................................................................................1- 2
1.2 Product Specifications................................................................................................................................1- 3
1.2.1 Names of Parts........................................................................................................................................................1- 3
1.2.1.1 External View...........................................................................................................................................................................1- 3
1.2.1.2 Cross Section........................................................................................................................................................................... 1- 4
1.2.2 Using the Machine...................................................................................................................................................1- 5
1.2.2.1 Turning on the Power Switch...................................................................................................................................................1- 5
1.2.2.2 Control Panel ........................................................................................................................................................................... 1- 6
1.2.3 User Mode Items.....................................................................................................................................................1- 7
1.2.3.1 Overview..................................................................................................................................................................................1- 7
1.2.3.2 Paper Settings .........................................................................................................................................................................1- 7
1.2.3.3 Volume Settings.......................................................................................................................................................................1- 7
1.2.3.4 Common Settings ....................................................................................................................................................................1- 8
1.2.3.5 Communications Settings *3.................................................................................................................................................... 1- 9
1.2.3.6 Address Book Settings........................................................................................................................................................... 1- 11
1.2.3.7 Printer Settings ......................................................................................................................................................................1- 13
1.2.3.8 Timer Settings........................................................................................................................................................................ 1- 15
1.2.3.9 Adjustment/Cleaning..............................................................................................................................................................1- 16
1.2.3.10 Report Settings .................................................................................................................................................................... 1- 16
1.2.3.11 System Management Set..................................................................................................................................................... 1- 17
1.2.4 Maintenance by the User.......................................................................................................................................1- 25
1.2.4.1 Cleaning................................................................................................................................................................................. 1- 25
1.2.5 Safety ....................................................................................................................................................................1- 28
1.2.5.1 Points to note at disassembly/assembly................................................................................................................................1- 28
1.2.5.2 CDRH Regulations.................................................................................................................................................................1- 28
1.2.5.3 Safety of the Laser Light........................................................................................................................................................1- 28
1.2.5.4 Handling the Laser Unit .........................................................................................................................................................1- 28
1.2.5.5 Safety of Toner ......................................................................................................................................................................1- 29
1.2.5.6 Notes when handling a battery ..............................................................................................................................................1- 29
1.2.6 Product Specifications...........................................................................................................................................1- 30
1.2.6.1 Main Body Specifications....................................................................................................................................................... 1- 30
1.2.6.2 ADF Specifications................................................................................................................................................................. 1- 31
1.2.6.3 FAX Specifications.................................................................................................................................................................1- 32
1.2.7 Function List..........................................................................................................................................................1- 33
1.2.7.1 Print Speed ............................................................................................................................................................................ 1- 33
1.2.7.2 Paper Type ............................................................................................................................................................................1- 34
Chapter 2 Installation
2.1 Making Pre-Checks ....................................................................................................................................2- 1
2.1.1 Checking Installation Environment ..........................................................................................................................2- 1
2.1.2 Points to Note Before Installation............................................................................................................................2- 1
2.1.3 Checking Contents..................................................................................................................................................2- 1
2.2 Unpacking and Installation .........................................................................................................................2- 3
2.2.1 Unpacking................................................................................................................................................................2- 3
2.2.2 Installation ...............................................................................................................................................................2- 3
2.2.3 Installing Others.......................................................................................................................................................2- 4
2.2.4 Securing Product.....................................................................................................................................................2- 5
2.2.5 Cassette Settings ....................................................................................................................................................2- 5

Contents
2.2.6 Points to Note When Turning OFF Host Machine....................................................................................................2- 5
2.2.7 Connecting Cables...................................................................................................................................................2- 5
2.2.8 Auto Gradation Adjustment......................................................................................................................................2- 6
2.2.9 Operation when moving the host machine...............................................................................................................2- 6
2.3 Checking the Connection to the Network...................................................................................................2- 6
2.3.1 Setting Up the Network............................................................................................................................................2- 6
2.3.2 Procedure for Ping Operation..................................................................................................................................2- 6
2.3.3 Checking with Remote Host Address......................................................................................................................2- 7
2.3.4 Troubleshooting Network Connection......................................................................................................................2- 7
2.3.5 Checking with Loopback Address............................................................................................................................2- 7
2.3.6 Checking with Local Host Address ..........................................................................................................................2- 7
2.4 Checking the Images/Operations...............................................................................................................2- 7
2.4.1 Checking Image Operation......................................................................................................................................2- 7
2.5 Installing the Card Reader..........................................................................................................................2- 8
2.5.1 Notice At Installation................................................................................................................................................2- 8
2.5.2 Checking the Contents.............................................................................................................................................2- 8
2.5.3 Turning OFF the Power of the Host Machine ..........................................................................................................2- 8
2.5.4 Installation Procedure..............................................................................................................................................2- 8
2.5.5 Card ID Registration ................................................................................................................................................2- 9
2.5.6 Installation Procedure in the imageWARE Accounting Manager (hereinafter referred to iWAM) Environment.....2- 10
2.6 Installing the Hand Set .............................................................................................................................2- 10
2.6.1 Points to Note At Installation..................................................................................................................................2- 10
2.6.2 Checking the Contents...........................................................................................................................................2- 10
2.6.3 Turning OFF the Power of the Host Machine ........................................................................................................2- 10
2.6.4 Installation Procedure............................................................................................................................................2- 10
2.7 Installing the Memory ...............................................................................................................................2- 11
2.7.1 Checking the Contents...........................................................................................................................................2- 11
2.7.2 Checking Before Memory Expansion.....................................................................................................................2- 11
2.7.3 Turning OFF the Power of the Host Machine ........................................................................................................2- 11
2.7.4 Installation Procedure............................................................................................................................................2- 11
2.7.5 Checking After Memory Expansion........................................................................................................................2- 12
Chapter 3 Basic Operation
3.1 Construction ...............................................................................................................................................3- 1
3.1.1 Functional Configuration..........................................................................................................................................3- 1
3.1.2 Connecting the Main PCBs......................................................................................................................................3- 2
3.2 Basic Sequence .........................................................................................................................................3- 3
3.2.1 Basic Sequence of Operation..................................................................................................................................3- 3
3.2.2 Power-On Sequence................................................................................................................................................3- 4
Chapter 4 Main Controller
4.1 Overview/Configuration..............................................................................................................................4- 1
4.1.1 Overview..................................................................................................................................................................4- 1
4.1.2 Configurations/functions ..........................................................................................................................................4- 2
4.2 Set-Up Sequence.......................................................................................................................................4- 4
4.2.1 Overview..................................................................................................................................................................4- 4
4.2.2 Startup Sequence....................................................................................................................................................4- 5
4.3 Image Processing.......................................................................................................................................4- 6
4.3.1 Overview of the Image Flow ....................................................................................................................................4- 6
4.3.2 Construction of the Image Processing Module........................................................................................................4- 6
4.3.3 Reader Unit Input Image Processing.......................................................................................................................4- 7
4.3.4 Compression/ Extesion/ Editing Block.....................................................................................................................4- 7
4.3.5 Printer unit Output Image Processing......................................................................................................................4- 8

Contents
4.4 Image Data Flow ........................................................................................................................................4- 9
4.4.1 Flow of Image Data According to Copy Functions ..................................................................................................4- 9
4.4.2 Flow of Image Data for the SEND Function ..........................................................................................................4- 10
4.4.3 Flow of Image Data for the Fax Transmission.......................................................................................................4- 10
4.4.4 Flow of Image Data for the Fax Reception Function .............................................................................................4- 11
4.4.5 Flow of Image Data for the PDL Function .............................................................................................................4- 11
4.5 Parts Replacement Procedure .................................................................................................................4- 12
4.5.1 Main Controller PCB..............................................................................................................................................4- 12
4.5.1.1 Before Removing the Main Controller PCB ...........................................................................................................................4- 12
4.5.1.2 Removing the Main Controller PCB.......................................................................................................................................4- 12
4.5.1.3 Procedure after Replacing the Main Controller PCB .............................................................................................................4- 12
Chapter 5 Original Exposure System
5.1 Basic Construction......................................................................................................................................5- 1
5.1.1 Overview..................................................................................................................................................................5- 1
5.1.2 Major Components..................................................................................................................................................5- 1
5.2 Basic Sequence..........................................................................................................................................5- 3
5.2.1 Basic Sequence of Operation at Power-on .............................................................................................................5- 3
5.2.2 Basic Sequence of Operation in Response to a Press on the Start Key (book)......................................................5-4
5.3 Various Control...........................................................................................................................................5- 5
5.3.1 Lamp Control...........................................................................................................................................................5- 5
5.3.1.1 Overview..................................................................................................................................................................................5- 5
5.3.2 Enlargement/Reduction...........................................................................................................................................5- 5
5.3.2.1 Overview..................................................................................................................................................................................5- 5
5.3.3 Detecting the Size of Originals................................................................................................................................5- 6
5.3.3.1 Overview..................................................................................................................................................................................5- 6
5.3.4 Dirt Sensor Control..................................................................................................................................................5- 7
5.3.4.1 Overview..................................................................................................................................................................................5- 7
5.3.4.2 Stream Reading Position Shift................................................................................................................................................. 5- 7
5.4 Parts Replacement Procedure ...................................................................................................................5- 8
5.4.1 ADF Unit + Reader Unit...........................................................................................................................................5- 8
5.4.1.1 Before Removing the ADF Unit + Reader Unit ........................................................................................................................5- 8
5.4.1.2 Removing the ADF Unit + Reader Unit....................................................................................................................................5- 8
5.4.1.3 Procedure after Replacing the ADF Unit................................................................................................................................5- 10
5.4.1.4 Procedure after Replacing the Reader Unit...........................................................................................................................5- 10
5.4.2 Reader Unit ...........................................................................................................................................................5- 10
5.4.2.1 Before Removing the Reader Unit.........................................................................................................................................5- 10
5.4.2.2 Removing the Reader Unit.....................................................................................................................................................5- 10
5.4.2.3 Procedure after Replacing the Reader Unit...........................................................................................................................5- 11
Chapter 6 Original Feeding System
6.1 Basic Construction......................................................................................................................................6- 1
6.1.1 Overview..................................................................................................................................................................6- 1
6.2 Basic Operation..........................................................................................................................................6- 3
6.2.1 Operation Mode.......................................................................................................................................................6- 3
6.2.2 Document Size Detection........................................................................................................................................6- 5
6.3 Detection Jams...........................................................................................................................................6- 6
6.3.1 Overview..................................................................................................................................................................6- 6
6.4 ADF/DADF..................................................................................................................................................6- 7
6.4.1 ADF/DADF...............................................................................................................................................................6- 7
6.4.1.1 Removing the ADF unit............................................................................................................................................................6- 7
6.4.1.2 Procedure after Replacing the ADF Unit..................................................................................................................................6- 8
6.4.2 Pickup Feed Unit.....................................................................................................................................................6- 8
6.4.2.1 Removing the ADF Pickup Feed Unit ......................................................................................................................................6- 8
6.4.3 Pick-up Roller........................................................................................................................................................6- 10

Contents
6.4.3.1 Removing the ADF Pickup Roller .......................................................................................................................................... 6- 10
6.4.4 Separation Roller...................................................................................................................................................6- 11
6.4.4.1 Removing the ADF Separation Roller....................................................................................................................................6- 11
6.4.5 Pick-up Motor.........................................................................................................................................................6- 12
6.4.5.1 Before Removing the ADF Pickup Motor...............................................................................................................................6- 12
6.4.5.2 Removing the ADF Pickup Motor...........................................................................................................................................6- 12
6.4.6 Pick-up Solenoid....................................................................................................................................................6- 13
6.4.6.1 Before Removing the ADF Pickup Solenoid..........................................................................................................................6- 13
6.4.6.2 Removing the ADF Pickup Solenoid......................................................................................................................................6- 13
6.4.7 Separation Pad......................................................................................................................................................6- 14
6.4.7.1 Removing the ADF Separation Pad.......................................................................................................................................6- 14
Chapter 7 Laser Exposure
7.1 Overview/Configuration..............................................................................................................................7- 1
7.1.1 Overview..................................................................................................................................................................7- 1
7.2 Controlling the Laser ..................................................................................................................................7- 3
7.2.1 Overview..................................................................................................................................................................7- 3
7.2.2 Laser Light Emission Control...................................................................................................................................7- 4
7.2.3 Laser Light Intensity Control....................................................................................................................................7- 4
7.2.4 Image Masking Control............................................................................................................................................7- 4
7.2.5 Failure Detection......................................................................................................................................................7- 4
7.3 Controlling the Laser Scanner Motor..........................................................................................................7- 5
7.3.1 Overview..................................................................................................................................................................7- 5
7.3.2 Failure Detection......................................................................................................................................................7- 5
7.4 Parts Replacement Procedure ...................................................................................................................7- 6
7.4.1 Laser/Scanner Unit..................................................................................................................................................7- 6
7.4.1.1 Before Removing the Laser Scanner Unit ...............................................................................................................................7- 6
7.4.1.2 Removing the Laser Scanner Unit........................................................................................................................................... 7- 6
Chapter 8 Image Formation
8.1 Overview/Configuration..............................................................................................................................8- 1
8.1.1 Overview..................................................................................................................................................................8- 1
8.1.2 Print Process............................................................................................................................................................8- 2
8.1.3 Electrostatic Latent Image Formation Block ............................................................................................................8- 3
8.1.4 Development Block..................................................................................................................................................8- 4
8.1.5 Transfer Block..........................................................................................................................................................8- 4
8.1.6 Fixing Block..............................................................................................................................................................8- 6
8.1.7 Cleaning Block.........................................................................................................................................................8- 6
8.2 Image Stabilization Control ........................................................................................................................8- 7
8.2.1 Overview..................................................................................................................................................................8- 7
8.2.2 Environmental Change Corrective Control ..............................................................................................................8- 8
8.2.3 D-half Control...........................................................................................................................................................8- 9
8.2.4 Color Displacement Corrective Control..................................................................................................................8- 11
8.2.5 Auto Gradation Correction Control.........................................................................................................................8- 13
8.3 Toner Cartridge ........................................................................................................................................8- 14
8.3.1 Overview................................................................................................................................................................8- 14
8.3.2 Toner Level Detection............................................................................................................................................8- 15
8.3.3 Memory Tag Control..............................................................................................................................................8- 15
8.3.4 Toner Cartridge Detection......................................................................................................................................8- 15
8.3.5 New Toner Cartridge Detection .............................................................................................................................8- 16
8.3.6 Developing Cylinder Engagement/disengagement Control ...................................................................................8- 17
8.4 Transfer Unit.............................................................................................................................................8- 18
8.4.1 ETB Unit.................................................................................................................................................................8- 18
8.4.2 Automatic Bias Control ..........................................................................................................................................8- 19
8.4.3 ETB Cleaning.........................................................................................................................................................8- 20