Canon iR6570 series User manual

Feb 21 2005
Service Manual
iR6570/5570 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 reference 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, however, 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 communicated 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
1.1.1System Configuration with Input/Output Accessories................................................................................ 1- 1
1.1.2System Configuration with Printing/Transmission Accessories (230V) .................................................... 1- 2
1.1.3Functions and Printing/Transmission Accessories (230V) ......................................................................... 1- 3
1.2 Product Specifications....................................................................................................................................... 1- 4
1.2.1 Names of Parts ............................................................................................................................................ 1- 4
1.2.1.1 External view....................................................................................................................................... 1- 4
1.2.1.2 Cross-Section....................................................................................................................................... 1- 5
1.2.2 Using the Machine ...................................................................................................................................... 1- 8
1.2.2.1 Turning On the Power Switch ............................................................................................................. 1- 8
1.2.2.2 Turning Off the Power Switch ............................................................................................................ 1- 9
1.2.2.3 Control Panel ..................................................................................................................................... 1- 11
1.2.3 User Mode Items....................................................................................................................................... 1- 12
1.2.3.1 Common Settings .............................................................................................................................. 1- 12
1.2.3.2 Timer Settings ................................................................................................................................... 1- 14
1.2.3.3 Adjustment/Cleaning......................................................................................................................... 1- 15
1.2.3.4 Report Output .................................................................................................................................... 1- 15
1.2.3.5 System Control Settings .................................................................................................................... 1- 16
1.2.3.6 Copier Specifications......................................................................................................................... 1- 19
1.2.3.7 Transmission/Reception Settings ...................................................................................................... 1- 20
1.2.3.8 Box Settings....................................................................................................................................... 1- 22
1.2.3.9 Printer Settings .................................................................................................................................. 1- 23
1.2.3.10 Address Book Settings .................................................................................................................... 1- 24
1.2.3.11 Voice Guide Settings....................................................................................................................... 1- 27
1.2.4 Maintenance by the User........................................................................................................................... 1- 27
1.2.4.1 Cleaning............................................................................................................................................. 1- 27
1.2.4.2 Checks ............................................................................................................................................... 1- 29
1.2.5 Safety ........................................................................................................................................................ 1- 30
1.2.5.1 Safety of the Machine's Laser Unit ................................................................................................... 1- 30
1.2.5.2 CDRH Regulations............................................................................................................................ 1- 31
1.2.5.3 Handling the Machine's Laser Unit ................................................................................................... 1- 31
1.2.5.4 Safety of Toner.................................................................................................................................. 1- 32
1.2.6 Product Specifications .............................................................................................................................. 1- 32
1.2.6.1 Product Specifications....................................................................................................................... 1- 32
1.2.7 Function List ............................................................................................................................................. 1- 35
1.2.7.1 Paper Types ....................................................................................................................................... 1- 35
1.2.7.2 Printing Speed ................................................................................................................................... 1- 36
Chapter 2 Installation
2.1 Making Pre-Checks ........................................................................................................................................... 2- 1
2.1.1Selecting the Site ......................................................................................................................................... 2- 1

Contents
2.1.2Checking the Contents.................................................................................................................................2- 3
2.1.3Name of Parts ..............................................................................................................................................2- 6
2.2 Unpacking and Installation ................................................................................................................................2- 8
2.2.1Points to Note Before Starting the Work.....................................................................................................2- 8
2.2.2Unpacking....................................................................................................................................................2- 8
2.2.3Installing the Scanner ................................................................................................................................2- 10
2.2.4Installing the Fixing Assembly..................................................................................................................2- 10
2.2.5Checking the Corona Assembly and the Dust-proofing Glass ..................................................................2- 11
2.2.6Installing the Developing Assembly..........................................................................................................2- 13
2.2.7Installing the Pick-up Assembly................................................................................................................2- 14
2.2.8Installing the Deck Pressure Plate .............................................................................................................2- 15
2.2.9Setting Up the Toner Bottle.......................................................................................................................2- 16
2.2.10Connecting the Reader Communication Cable........................................................................................2- 16
2.2.11Checking the Environment Switch ..........................................................................................................2- 17
2.2.12Turning on the Main Power.....................................................................................................................2- 18
2.2.13Stirring the Toner.....................................................................................................................................2- 18
2.2.14Setting the Cassette..................................................................................................................................2- 18
2.2.15Index Paper Attachment ..........................................................................................................................2- 19
2.2.16Changing Paper Size of the Front Deck (Left/Right) ..............................................................................2- 19
2.2.17Checking Images/Operations, User Mode...............................................................................................2- 20
2.2.18Adjusting Side Registration.....................................................................................................................2- 21
2.2.19Adjusting Leading Edge Registration......................................................................................................2- 23
2.2.20Getting the Machine Ready for Installation.............................................................................................2- 23
2.3 Checking the Connection to the Network........................................................................................................2- 26
2.3.1Overview....................................................................................................................................................2- 26
2.3.2Ping Operating Procedure..........................................................................................................................2- 26
2.3.3Checking with Remote Host Address........................................................................................................2- 26
2.4 Troubleshooting the Network ..........................................................................................................................2- 28
2.4.1Overview....................................................................................................................................................2- 28
2.4.2Checking with Loopback Address.............................................................................................................2- 28
2.4.3Checking with Local Host Address ...........................................................................................................2- 28
2.5 Installing the Copy Tray ..................................................................................................................................2- 29
2.5.1Checking the Contents...............................................................................................................................2- 29
2.5.2Turning Off the Host Machine ..................................................................................................................2- 29
2.5.3Installation Procedure for the Copy Tray-L1.............................................................................................2- 30
2.6 Installing the Card Reader ...............................................................................................................................2- 33
2.6.1Installation Procedure for the Card Reader ...............................................................................................2- 33
2.6.2Checking the Contents...............................................................................................................................2- 33
2.6.3Turning Off the Host Machine ..................................................................................................................2- 34
2.6.4Installation Procedure ................................................................................................................................2- 35
2.7 Installing the NE Controller.............................................................................................................................2- 39
2.7.1Installing the NE Controller-A1 ................................................................................................................2- 39
2.8 Installing the Original Holder..........................................................................................................................2- 41
2.8.1Checking the Contents...............................................................................................................................2- 41
2.8.2Installation Procedure ................................................................................................................................2- 41
2.9 Installing the Cassette Heater ..........................................................................................................................2- 43
2.9.1Checking the Contents...............................................................................................................................2- 43
2.9.2Turning Off the Host Machine ..................................................................................................................2- 43
2.9.3Mounting the Cassette Heater....................................................................................................................2- 44

Contents
Chapter 3 Basic Operation
3.1 Construction ...................................................................................................................................................... 3- 1
3.1.1Functional Construction .............................................................................................................................. 3- 1
3.1.2Wiring Diagram of the Major PCBs............................................................................................................ 3- 1
3.1.3Controlling the Main Motor (M2) ............................................................................................................... 3- 2
3.2 Basic Sequence.................................................................................................................................................. 3- 4
3.2.1Basic Sequence of Operation (at power-on; 30-sec start-up mode)............................................................3-4
3.2.2Basic Sequence of Operation (at power-on; low-temperature start-up mode) ............................................ 3- 5
3.2.3Basic Sequence of Operation (at power-on; high-humidity start-up mode) ............................................... 3- 6
3.2.4Basic Sequence of Operation (at time of copying/printing)........................................................................ 3- 7
Chapter 4 Main Controller
4.1 Construction ...................................................................................................................................................... 4- 1
4.1.1Construction and Mechanisms .................................................................................................................... 4- 1
4.2 Construction of the Electrical Circuitry ............................................................................................................ 4- 3
4.2.1Main Controller PCB................................................................................................................................... 4- 3
4.2.2HDD ............................................................................................................................................................ 4- 4
4.3 Start-Up Sequence............................................................................................................................................. 4- 7
4.3.1Overview ..................................................................................................................................................... 4- 7
4.3.2Start-Up Sequence....................................................................................................................................... 4- 7
4.4 Shut-Down Sequence ...................................................................................................................................... 4- 10
4.4.1Overview ................................................................................................................................................... 4- 10
4.4.2Flow of Operation ..................................................................................................................................... 4- 10
4.5 Image Processing............................................................................................................................................. 4- 11
4.5.1Overview of the Image Flow..................................................................................................................... 4- 11
4.5.2Construction of the Image Processing Module ......................................................................................... 4- 11
4.5.3Reader Unit Input Image Processing......................................................................................................... 4- 12
4.5.4Compression/ Extension/ Editing Block .................................................................................................. 4- 13
4.5.5Printer unit Output Image Processing ....................................................................................................... 4- 14
4.6 Flow of Image Data......................................................................................................................................... 4- 15
4.6.1Flow of Image Data According to Copy Functions .................................................................................. 4- 15
4.6.2Flow of Image Data for the Box Function ................................................................................................ 4- 15
4.6.3Flow of Image Data for the SEND Function............................................................................................. 4- 16
4.6.4Flow of Image Data for the Fax Transmission.......................................................................................... 4- 17
4.6.5Flow of Image Data for the Fax Reception Function ................................................................................ 4- 17
4.6.6Flow of Image Data for the PDL Function................................................................................................ 4- 18
4.7 Parts Replacement Procedure.......................................................................................................................... 4- 20
4.7.1 Main Controller Box ................................................................................................................................. 4- 20
4.7.1.1 Removing the Rear Cover (upper) .................................................................................................... 4- 20
4.7.1.2 Removing the Main Controller Box.................................................................................................. 4- 20
4.7.2 Main Controller PCB ................................................................................................................................ 4- 21
4.7.2.1 Removing the Main Controller PCB ................................................................................................. 4- 21
4.7.2.2 After Replacing the Main Controller PCB ........................................................................................ 4- 23
4.7.3 SDRAM .................................................................................................................................................... 4- 23
4.7.3.1 Removing the SDRAM ..................................................................................................................... 4- 23
4.7.4 Boot ROM................................................................................................................................................. 4- 23
4.7.4.1 Removing the Boot ROM.................................................................................................................. 4- 23

Contents
4.7.5 HDD ..........................................................................................................................................................4- 24
4.7.5.1 Removing the HDD ...........................................................................................................................4- 24
4.7.5.2 After Replacing the HDD ..................................................................................................................4- 24
4.7.6 Controller Fan ...........................................................................................................................................4- 24
4.7.6.1 Removing the Controller Cooling Fan...............................................................................................4- 24
Chapter 5 Original Exposure System
5.1 Construction.......................................................................................................................................................5- 1
5.1.1Specifications, Controls, and Functions ......................................................................................................5- 1
5.1.2Major Components ......................................................................................................................................5- 2
5.1.3Construction of the Control System ............................................................................................................5- 4
5.1.4Reader Controller PCB ................................................................................................................................5- 5
5.2 Basic Sequence ..................................................................................................................................................5- 7
5.2.1Basic Sequence of Operations .....................................................................................................................5- 7
5.2.2Basic Sequence of Operation in Response to a Press on the Start Key.......................................................5- 7
5.3 Various Control .................................................................................................................................................5- 9
5.3.1 Controlling the Scanner Drive System........................................................................................................5- 9
5.3.1.1 Overview..............................................................................................................................................5- 9
5.3.1.2 Controlling the Scanner Motor ............................................................................................................5- 9
5.3.2 Enlargement/Reduction.............................................................................................................................5- 11
5.3.2.1 Changing the Magnification in Main Scanning Direction.................................................................5- 11
5.3.2.2 Changing the Magnification in Sub Scanning Direction ................................................................... 5- 11
5.3.3 Controlling the Scanning Lamp ................................................................................................................5- 13
5.3.3.1 Overview............................................................................................................................................5- 13
5.3.3.2 Scanning Lamp ..................................................................................................................................5- 13
5.3.3.3 Controlling the Activation .................................................................................................................5- 14
5.3.4 Detecting the Size of Originals .................................................................................................................5- 14
5.3.4.1 Overview............................................................................................................................................5- 14
5.3.4.2 Points of Measurement Used for Original Size Identification...........................................................5- 14
5.3.4.3 Overview of Operation ......................................................................................................................5- 16
5.3.5 Dirt Sensor Control ...................................................................................................................................5- 19
5.3.5.1 Dust Detection in Stream Reading Mode ..........................................................................................5- 19
5.3.5.2 White Plate Dust Detection Control ..................................................................................................5- 21
5.3.6 Image Processing.......................................................................................................................................5- 22
5.3.6.1 Overview............................................................................................................................................5- 22
5.3.6.2 CCD Drive .........................................................................................................................................5- 23
5.3.6.3 CCD Output Gain Correction, Offset Correction ..............................................................................5- 24
5.3.6.4 CCD Output A/D Conversion............................................................................................................5- 24
5.3.6.5 Outline of Shading Correction...........................................................................................................5- 24
5.3.6.6 Shading Adjustment...........................................................................................................................5- 24
5.3.6.7 Shading Correction ............................................................................................................................5- 25
5.4 Parts Replacement Procedure ..........................................................................................................................5- 26
5.4.1 CCD Unit...................................................................................................................................................5- 26
5.4.1.1 Removing the Copyboard Glass ........................................................................................................5- 26
5.4.1.2 Removing the CCD Unit Cover.........................................................................................................5- 26
5.4.1.3 Removing the Original Size Sensor Unit...........................................................................................5- 27
5.4.1.4 Removing the CCD Unit....................................................................................................................5- 27
5.4.1.5 When Replacing the CCD Unit .........................................................................................................5- 27