SERVICE
MANUAL
imageRUNNER
C6800
COPYRIGHT 2003 CANON INC.
CANON imageRUNNERC3100 REV. 0 PRINTED IN U.S.A.
DU7-1120-000
MARCH 2004
REV. 0
main cover.qxd
3/24/2004
12:00 PM
Page 1
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
U.S.A.
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 1Introduction
1.1 System Construction .................................................................................................. 1-1
1.1.1 System Configuration with Pickup/Delivery Accessories .................................. 1-1
1.1.2 System Configuration with Printing/Transmission Accessories......................... 1-2
1.1.3 Functions of Printing/Transmitting Accessories................................................. 1-3
1.2 Product Specifications ............................................................................................... 1-4
1.3 Names of Parts ........................................................................................................... 1-4
1.3.1 Using the Machine .............................................................................................. 1-8
1.3.2 User Mode Items ............................................................................................... 1-15
1.3.3 User Maintenance ............................................................................................. 1-23
1.3.4 Safety ................................................................................................................ 1-28
1.3.5 Product Specifications ....................................................................................... 1-31
1.3.6 Function List ..................................................................................................... 1-35
Chapter 2Installation
2.1 Making Pre-Checks.................................................................................................... 2-1
2.1.1 Selecting the Site of Installation ......................................................................... 2-1
2.1.2 Installation Environment..................................................................................... 2-4
2.1.3 Checking the Contents ........................................................................................ 2-4
2.2 Unpacking and Installation ........................................................................................ 2-7
2.2.1 Before Starting the Work .................................................................................... 2-7
2.2.2 Unpacking the Machine ...................................................................................... 2-7
2.2.3 Mounting the Pickup Assembly........................................................................ 2-11
2.2.4 Mounting the Scanner System .......................................................................... 2-12
2.2.5 Locking the Primary Transfer Roller in Place .................................................. 2-12
2.2.6 Before Mounting the Developing Assembly .................................................... 2-13
2.2.7 Mounting the Color Developing Assemblies.................................................... 2-18
2.2.8 Mounting the Black Developing Assembly ...................................................... 2-22
2.2.9 Mounting the Process Unit................................................................................ 2-26
2.2.10 Mounting the Fixing Assembly....................................................................... 2-31
2.2.11 Fitting the Black Toner Bottle ........................................................................ 2-33
2.2.12 Checking the Environment Switch ................................................................. 2-34