Canon C-EXV 11 User manual

Aug 23 2004
Service Manual
Drum Unit
C-EXV 11/12

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 Installation
1.1 Installation Procedure........................................................................................................................................ 1- 1
1.1.1Turning Off the Host Machine .................................................................................................................... 1- 1
1.1.2Replacing the Drum Unit ............................................................................................................................ 1- 1
1.1.3After Replacing the Drum Unit (APVC correction) ................................................................................... 1- 4
1.1.4Attaching the Counter Label ....................................................................................................................... 1- 4

Chapter 1 Installation

Contents
Contents
1.1 Installation Procedure......................................................................................................................................... 1-1
1.1.1 Turning Off the Host Machine .................................................................................................................... 1-1
1.1.2 Replacing the Drum Unit ............................................................................................................................ 1-1
1.1.3 After Replacing the Drum Unit (APVC correction) ................................................................................... 1-4
1.1.4 Attaching the Counter Label ....................................................................................................................... 1-4

Chapter 1
1-1
1.1 Installation Procedure
1.1.1 Turning Off the Host
Machine 0007-3341
Before starting the work, be sure to go through the
following in strict sequence on the host machine:
1. Hold down the control panel power switch for 3 sec
or more.
2. Go through the shutdown sequence indicated on the
screen so that the machine will be ready to be turned
off.
3. Turn off the main power switch.
4. Disconnect the power cable (from the wall outlet).
F-1-1
1.1.2 Replacing the Drum
Unit 0007-3185
1) Open the upper front cover [1].
F-1-2
2) Remove the face rubber piece [1] and the 2 screws
[2]; then, slide the front cover unit [3] to the left to
detach.
F-1-3
3) Remove the waste toner box [1].
F-1-4
4) Open the right door [1].
[4][3][2]
[1]
ON/OFF

Chapter 1
1-2
F-1-5
5) Remove the locking screw [1] from the locking
lever.
F-1-6
6) Shift the locking lever [1] of the developing
assembly to the left to free the developing
assembly.
F-1-7
7) Remove the screw [1].
F-1-8
8) Remove the drum [1].
F-1-9
9) Take out the new drum unit from its wrappings.
10) Remove the unlocking member [1] from the new
drum unit.
F-1-10
11) Insert the new drum unit [1] in the machine.
- Do not touch the surface of the photosensitive drum.
- Make sure that the surface of the photosensitive
drum is not exposed to light for a long time.

Chapter 1
1-3
- Do not touch the spur of the drum unit.
F-1-11
12) Secure the new drum unit in place using a screw
[1].
F-1-12
13) Shift the locking lever [1] of the developing
assembly to the right to lock it in place.
F-1-13
14) Secure the locking lever in place using a screw [1].
F-1-14
15) Close the right door.
16) Fit the waste toner box.
F-1-15
17) Using 2 screws [2], mount the front cover unit [3];
then, fit the face rubber member [1].
At this time, be sure to slide the front cover to the right
so that its claws will match the host machine.

Chapter 1
1-4
F-1-16
18) Close the upper front cover [1].
F-1-17
1.1.3 After Replacing the
Drum Unit (APVC
correction) 0007-3190
1) Connect the power plug to the power outlet, and
turn on the main power unit.
2) In the host machine's service mode, make the
following selections:
COPIER>FUNCTION>DPC>D-GAMMA.
3) Press the OK key.
- The machine will pick up paper from cassette 1
(regardless of the size of the paper inside the
cassette).
- If no paper exists in cassette 1, the machine will try
to find paper in the lower cassettes in order.
- The paper will be discharged blank to end APVC
correction.
4) Press the Reset key twice to end service mode.
1.1.4 Attaching the Counter
Label 0007-3345
1) Press the Counter key on the control panel to check
the total counter reading.
2) Press the Close key on the LCD to go back to the
initial screen.
3) Record the date and the counter reading on the
drum counter label [1].
F-1-18
4) Open the upper front cover [1].
F-1-19
5) Attach the counter label [2] behind the upper front
cover [1].
[1]

Chapter 1
1-5
F-1-20
6) Close the upper front cover [1].
F-1-21

Aug 23 2004