Canon C2050 How to use

REVISION 0
FY8-23B9-000
COPYRIGHT © 2000 CANON INC. 2000 CANON C2050/2020, C2100/2100S REV.0 NOV. 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
Color image RUNNER
C2050/2020
iR C2100/2100S
NOV. 2000

COPYRIGHT © 2000 CANON INC. 2000 CANON C2050/2020, C2100/2100S REV.0 NOV. 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
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.
Caution
Use of this manual should be strictly supervised to avoid disclosure of confidential information.
COPYRIGHT © 2000 CANON INC.
Printed in Japan
Imprimé au Japon

i
INTRODUCTION
1 Symbols Used
This documentation uses the following symbols to indicate special information:
Symbol Description
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.
Memo
Indicates an item of reference assisting the understanding of the topic in ques-
tion.
REF.
Provides a description of a service mode.
Provides a description of the nature of an error indication.
Refers to the Copier Basics Series for a better understanding of the contents.
Indicates an item of a non-specific nature, possibly classified as Note, Caution,
or Warning.
Indicates an item requiring care to avoid electric shocks.

ii
INTRODUCTION

iii
CONTENTS
Contents (Reader Unit)
CHAPTER 1 MAINTENANCE AND INSPECTION
1 Variable Resistors, Light-Emitting
Diodes, and Check Pins by PCB ........ 3-6
CHAPTER 3 ARRANGEMENT AND FUNCTIONS
OF ELECTRICAL PARTS
1
2
3
1 Periodically Replaced Parts ................ 1-1
2 Consumables and Durables ................ 1-1 3 Scheduled Servicing ........................... 1-2 4 Scheduled Servicing Chart ................. 1-4
1 Adjusting the Image Position ............. 2-1
1.1 Standards.................................... 2-1
1.2 Checking the Image Position ..... 2-1
2 Making Scanner-Related
Adjustments ........................................ 2-2
2.1 Routing the Scanner Drive
Cable .......................................... 2-2
2.2 Adjusting the Intensity of
the Scanning Lamp .................... 2-3
2.3 After Replacing the Scanning
Lamp .......................................... 2-4
2.4 Mounting Back the Existing
Scanning Lamp .......................... 2-4
2.5 Keeping the Reader Unit
Level........................................... 2-5
2.6 After Replacing the Standard
White Plate................................. 2-6
3 Adjusting Other Electrical Parts ......... 2-7
3.1 When Replacing the CCD
Unit ............................................ 2-7
CHAPTER 2 STANDARDS AND ADJUSTMENTS
3.2 When Replacing the Reader
Controller PCB .......................... 2-8
3.3 When Replacing the AP-IP
PCB ............................................ 2-9
3.4 When Replacing the ECO
PCB ............................................ 2-9
3.5 When Replacing the Light
Intensity Detection PCB ............ 2-9
4 Checking the Photointerrupters ........ 2-10
5 Upgrading the Machine .................... 2-12
5.1 Replacing the DIMM ............... 2-12
5.1.1 Removing the DIMM from
the Reader Controller
PCB.................................... 2-13
5.1.2 Mounting the DIMM on the
Reader Controller PCB...... 2-14
5.2 Downloading............................ 2-15
5.2.1 Making Preparations.......... 2-15
5.2.2 Downloading Procedure .... 2-15

iv
CONTENTS
1 General Timing Chart ........................ A-1
2 Signals and Abbreviations ................. A-3
2.1 Signals....................................... A-3
2.2 Abbreviations ............................ A-4
APPENDIX 3 Special Tools ...................................... A-4
4 Solvents and Oils ............................... A-4
5 Reader Unit General Timing
Diagram ............................................. A-5

v
CONTENTS
Contents (Printer Unit)
CHAPTER 1 MAINTENANCE AND INSPECTION
1
2
1 Periodically Replaced Parts ................ 1-1
2 Consumables and Durables ................ 1-2
2.1 Printer Unit ................................ 1-2
2.2 Cassette Pedestal ........................ 1-3
3 Scheduled Servicing ........................... 1-4
4 Scheduled Servicing Chart ................. 1-6
CHAPTER 2 STANDARDS AND ADJUSTMENTS
1 Adjusting the Image Position ............. 2-1
1.1 Standards for Image
Position ...................................... 2-1
1.2 Checking the Position of
the Image.................................... 2-2
1.3 Adjusting the Left/Right
Image Margin ............................. 2-3
1.4 Adjusting the Leading
Edge Margin .............................. 2-7
1.5 Adjusting the Left/Right
Non-Image Width ...................... 2-7
1.6 Leading Edge Non-Image
Width.......................................... 2-7
2 Image Formation System-Related
Adjustments ........................................ 2-8
2.1 Points to Note When
Handling the Drum Unit ............ 2-8
2.2 After Replacing the Drum
Unit ............................................ 2-8
2.3 After Replacing the
Transfer Belt .............................. 2-9
3 Pickup/Feed System-Related
Adjustments ...................................... 2-10
3.1 Attaching the Timing Belt
for the Manual Feed Tray
Assembly ................................. 2-10
3.2 Executing Paper Width
Reference Point Auto
Adjustment for the
Manual Feed Tray .................... 2-11
3.3 Adjusting the Paper
Width BasicValue for the
Manual Feed Tray .................... 2-11
4 FixingSystem-Related
Adjustments ...................................... 2-12
4.1 When Replacing the Web......... 2-12
4.2 Adjusting the Nip..................... 2-13
4.3 Removing the Skew ................. 2-15
4.4 When Replacing the
Fixing Roller ............................ 2-16
5 LED Exposure Unit-Related
Adjustments ...................................... 2-17
5.1 Points to Note When
Handling the LED
Exposure Unit .......................... 2-17
5.2 Points to Note When
Mounting the LED
Exposure Unit .......................... 2-18
5.3 After Replacing the LED
Exposure Unit .......................... 2-18
5.4 Claening the LED Exposure
Unit (if image faults, e.g., light
images, uneven images, occur
as the result of dirt on the lens
surface)..................................... 2-18
6 Adjusting Other Electric Parts .......... 2-19
6.1 When Replacing the
System Controller PCB............ 2-19
6.2 When Replacing the DC
Controller PCB ........................ 2-20
6.3 Checking theEnvironment
Measurement PCB ................... 2-22
6.4 Checking the
Photointerrupters...................... 2-24
7 Upgrading ......................................... 2-28
7.1 Replacing the DIMM ............... 2-28
3

vi
CONTENTS
7.1.1 Removing the DIMM ........ 2-29
7.1.2 Mounting the DIMM of
the System Controller
PCB and the DC
Controller PCB .................. 2-32
7.2 Downloading ............................ 2-33
7.2.1 Items to Prepare ................. 2-33
7.2.2 Downloading
Procedure ........................... 2-33
1 Sensors................................................ 3-2
2 Thermistor, Lamps, and Heaters......... 3-5
3 Clutches and Solenoids....................... 3-8
4 Fans................................................... 3-10
5 Motors............................................... 3-12
6 PCBs ................................................. 3-14
7 Cassette Pedestal............................... 3-16
8 Variable Resistors (VR),
Light-Emitting Diodes, and
Check Pins by PCB .......................... 3-18
CHAPTER 3 ARRANGEMENT AND FUNCTIONS
OF ELECTRICAL PARTS 8.1 Controller PCB ........................ 3-19
8.2 System Controller PCB............ 3-20
8.3 Serial Driver PCB .................... 3-21
8.4 DC Power Supply PCB............ 3-21
8.5 Pickup Assembly PCB ............. 3-22
8.6 Duplex Driver PCB
(duplex model only)................. 3-23
8.7 Cassette Pedestal ...................... 3-23
APPENDIX
1 General Timing Chart ........................ A-1
2 Signals and Abbreviations ................. A-3
2.1 Signals....................................... A-3
2.1.1 Printer ................................. A-3
2.1.2 Cassette Pedestal................. A-9
2.2 Abbreviations ............................ A-9
3 Printer Unit General Circuit
Diagram ........................................... A-11
4 Cassette Pedestal General Circuit
Diagram ........................................... A-13
5 Special Tools.................................... A-15
6 Solvents and Oils ............................. A-17

vii
CONTENTS
Contents (Service Mode)
1 Outline ................................................S-1
1.1 Construction of Service Mode ...S-1
1.2 Starting the Service Mode .........S-3
1.3 Ending the Service Mode ..........S-4
1.4 Backing Up the Service Mode ...S-4
1.5 Basic Operation..........................S-5
1.5.1 Initial Screen........................S-5
1.5.2 Level 1/Level 2 screen .........S-5
1.5.3 Level 3 Screen .....................S-6
2 DISPLAY (status indication mode) ....S-7
2.1 COPIER/PRINTER ...................S-7
2.2 FEEDER ..................................S-26
2.3 EDITOR ...................................S-26
3 I/O (I/O display mode) .....................S-27
3.1 DC-CON ..................................S-28
3.2 R-CON .....................................S-34
3.3 IP ..............................................S-35
3.4 S-CON .....................................S-36
3.5 FEEDER ..................................S-38
3.6 COPIER ...................................S-40
4 Adjustment Mode (ADJUST)...........S-50
4.1 COPIER/PRINTER .................S-50
4.2 FEEDER ..................................S-76
5 Operation/Inspection Mode
(FUNCTION) ...................................S-77
5.1 COPIER/PRINTER .................S-77
5.2 FEEDER>FUNCTION ............S-92
6 OPTION (settings mode)..................S-93
6.1 COPIER/PRINTER .................S-93
6.2 FEEDER ................................S-108
6.3 SORTER ................................S-108
7 TEST (test print mode) ...................S-109
8 COUNTER (counter mode)............S-113

viii
CONTENTS
Contents (Error Code)
1 Self Diagnosis (copier) ...................... E-1
2 Self Diagnosis O (DADF) ............... E-13
3 Self Diagnosis (finisher) .................. E-16
3.1 Finisher Assembly................... E-16
3.2 Saddle Stitcher ........................ E-19
4 Self Diagnosis (sorter) ..................... E-23
5 Self Diagnosis (PDL Board)............ E-25

Reader Unit
(copier operation)
COPYRIGHT © 2000 CANON INC.2000 CANON C2050/2020, C2100/2100S REV.0 NOV. 2000

1-1R
CHAPTER 1 MAINTENANCE AND INSPECTION
CHAPTER 1 MAINTENANCE AND
INSPECTION
1 Periodically Replaced Parts
The machine does not have parts which require replacement on a periodical bias.
2 Consumables and Durables
As of May 2000
No. Part name Part No. Q’ty Life (prints) Remarks
1 Scanning lamp FH7-3336 1 500 hr Reference is to 75,000 scans:
for replacement work, see No. 1;
for alarm, see Note 2.
Replace the scanning lamp as instructed in 2.3.2 “After Replacing the Scan-
ning Lamp” in Chapter 8.
1

1-2R
CHAPTER 1 MAINTENANCE AND INSPECTION
3 Scheduled Servicing
1. As a rule, perform scheduled servicing every 50,000 prints.
2. Check the Service Book before leaving for scheduled servicing, and take
parts for expected replacement.
1) Report to the person in charge, and check the general condition.
2) Record the counter reading, and check the faulty copies.
3) Make test prints in Direct, Reduce, and Enlarge; then, check the following:
a. Images
b. Background for soiling
c. Leading edge margin (2.5 ± 1.5 as standard in Direct)
d. Left margin (2.0 ± 1.5 mm as standard in Direct)
e. Fixing, registration, and back for soiling
f. Abnormal noise
4) Perform scheduled servicing according to the number of prints made (Scheduled Servic-
ing Chart of this chapter and in Chapter 11 of the Printer Manual).
5) Clean any soiled areas inside the machine.
6) Make test prints.
7) Execute auto gradation correction in user mode.
8) Make sample copies.

1-3R
CHAPTER 1 MAINTENANCE AND INSPECTION
9) Press the test button of the leakage breaker for the reader unit and the printer, and check
to see that the open/close lever shifts to the OFF side.
Thereafter, turn off the power switch, and shift the lever to the ON side; then, turn on
the power switch.
If the lever fails to shift to the OFF side, replace he leakage breaker; after replacement,
make the foregoing check.
F01-300-01
10) Put the sample copies away, and clean up the area around the machine.
11) Record the final counter reading.
12) Fill out the Service Book, and report to the person in charge. Be sure to indicate the
check made on the leakage breaker in the history column.
Test button
Open/close lever

1-4R
CHAPTER 1 MAINTENANCE AND INSPECTION
4 Scheduled Servicing Chart
Do not use solvents or oils not indicated.
: Clean : Replace : Lubricate : Adjust : Inspect As of May 2000
Internals (prints)
Unit Part every every every every Others Remarks
50,000 100,000 150,000 300,000
Externals/ Copyboard glass As necessary
controls Copyboard cover As necessary
Scanner Rail Upon
replacement
of scanning
lamp Clean;
then, apply
silicone oil
Optical unit Mirror (No. 1 to No 3) As necessary
Reflecting shade As necessary
Standard white plate As necessary

CHAPTER 2 STANDARDS AND ADJUSTMENTS
2-1R
CHAPTER 2 STANDARDS AND
ADJUSTMENTS
1 Adjusting the Image Position
1.1 Standards
See 1 “Adjusting the Image Position” in Chapter 2 of the Printer Handbook.
1.2 Checking the Image Position
See 1 “Adjusting the Image Position” in Chapter 2 of the Printer Handbook. 2

CHAPTER 2 STANDARDS AND ADJUSTMENTS
2-2R
2 Making Scanner-Related Adjustments
2.1 Routing the Scanner Drive Cable
Go through steps [1] through [7] to route the scanner cable on the pulleys and hooks:
1. Check to make sure that the scanner drive cable is free of twists and it
has not ridden over the pulleys.
2. Try moving the No. 1/No. 2 mirror bases by hand to find out if they
move smoothly; at that time, do not touch the reflecting plate.
3. Take care not to damage the cable by the edge of the metal plate.
F02-201-01
Wind 7 times.
Secure
temporarily.
Put the metal ball
into the hole of the pulley.
Try not to allow a gap
between runs.
Try not to allow a gap
between runs.
[6]
[2]
[6]
[2] [1]
[4]
[5]
[5]
[3]
[7]
Wind 7 times.
Put the metal ball into
the hole of the pulley.

CHAPTER 2 STANDARDS AND ADJUSTMENTS
2-3R
2.2 Adjusting the Intensity of the Scanning Lamp
1) Connect the power plug, and turn on the main power switch.
2) Remove the reader unit front lower cover.
3) Wait until the machine enters standby state (i.e., until the Start key turns on green; in
about 5 min).
4) Turn the scanning lamp adjusting VR fully counterclockwise as shown.
F02-202-01
5-1)If the lamp is new (as when replacing the existing one), make the following selec
tions in service mode, and press the OK key: COPIER>FUNCTION>MISC-
R>LAMP-ADJ. (The indication will be ‘SERVICE’.)
5-2)If the lamp is old, make the following selections in service mode, and press the OK key:
COPIER>FUNCTION>MISC-R>USE-LAMP. (The indication will be ‘SERVICE’.)
6) See that the scanning lamp turns on; then, wait for about 5 min (for the scanning lamp to
warm up), and turn the scanning lamp adjusting VR clockwise until a beep is heard.
7) Press the OK key on the control panel screen. (The indication will be ‘READY’.)
8) Execute the following in service mode: FUNCTION>CCD>CCD-ADJ.
Connector for downloading
COPY
LOAD
Scanning lamp
adjusting VR DIP SW1 for
downloading

CHAPTER 2 STANDARDS AND ADJUSTMENTS
2-4R
2.3 After Replacing the Scanning Lamp
1) Replace the scanning lamp with a new one, and put the machine back into its initial con-
dition. (Keep the reader unit front lower cover removed.)
2) Execute adjustment of the scanning lamp intensity.
3) Mount the reader unit front lower cover.
4) Make the following selections in service mode: COPIER>ADJUST>PASCAL; then, set
‘0’ to <P-OFST-Y/M/C/K>.
5) Execute auto gradation correction in user mode.
2.4 Mounting Back the Existing Scanning Lamp
If the scanning lamp has been removed, be sure to go through the following after mount-
ing it back:
1) Mount the scanning lamp, and put the machine back into its initial condition. (Keep the
reader unit front lower cover removed.)
2) Execute adjustment of the scanning lamp intensity.
3) Mount the reader unit front lower cover.
4) Execute auto gradation correction in user mode.