Canon CLC 1120 How to use

SERVICE INFORMATION
Issued by Copying Machine Quality Assurance Center, Canon Inc.
NO. :F-04-E00008
DATE :DEC.2000
COLOR LASER COPIER
1120/1130/1150
LOCATION
SUBJECT
Revision of Service Handbook
The captioned technical documentation has been revised to reflect the following:
Reasons
to update the descriptions in the previous documentation covering modification of
functions and correction of typographical mistakes.
The present revision is a full revision. Kindly make arrangements so that the old
document may be replaced with the one being released. Further, please make sure
the old document is properly disposed of.
FY8-23B4-02Y
Printed in Japan
Imprimé au Japon
Major quality issues Quality upgrade/production efficiency
Field quality problems Miscellaneous
MODEL:

COLOR LASER COPIER
1120/1130/1150
REVISION 2
DEC. 2000
FY8-23B4-020
COPYRIGHT © 2000 CANON INC. CANON CLC1120/11301150 REV.2 DEC. 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)

COPYRIGHT © 2000 CANON INC. CANON CLC1120/1130/1150 REV.2 DEC. 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
COPYRIGHT © 2000 CANON INC.
Printed in Japan
Imprimé au Japon
IMPORTANT
THE INFORMATION CONTAINED HEREIN IS PUBLISHED BY CANON, INC., JAPAN, AND IS
FOR REFERENCE USE ONLY. SPECIFICATIONS AND OTHER INFORMATION CONTAINED
HEREIN MAY VARY SLIGHTLY FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN
ADVERTISING AND OTHER PRINTED MATTER.
ANY QUESTIONS REGARDING INFORMATION CONTAINED HEREIN SHOULD BE DIRECTED
TO THE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY.
Prepared by
OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION
CANON INC.
5-1, Hakusan 7-chome, Toride-shi Ibaraki, 302-8501 Japan
Use of this manual should be
strictly supervised to avoid
disclosure of confidential
information.

i
CONTENTS
CHAPTER 1 MAINTENANCE AND INSPECTION
A. Scheduled Servicing List ...........................1-1
1. Copier ..................................................1-1
2. Paper Deck..........................................1-3
B. Periodically Replaced Parts.......................1-4
C. Consumables and Durables ......................1-5
1. Copier ..................................................1-5
2. Paper Deck..........................................1-7
D. Image Adjustment Basic Procedure ..........1-9
E. Points to Note for Scheduled Servicing ...1-12
1
2
3
4
5
CHAPTER 2 STANDARDS AND ADJUSTMENTS
A. Image Adjustment System.........................2-1
B. Exposure System.......................................2-8
C. Image Formation System...........................2-9
D. Pickup/Feeding System ...........................2-14
E. Fixing System ..........................................2-24
F. Externals/Controls ................................... 2-27
G. Paper Deck ..............................................2-28
H. Electrical System .....................................2-32
CHAPTER 3 ARRANGEMENT AND FUNCTIONS OF
ELECTRICAL PARTS
A. Sensors......................................................3-1
1. CLC1120/1130.....................................3-1
2. CLC1150..............................................3-3
B. Thermistors, Lamps, and Heaters .............3-5
C. Clutches.....................................................3-6
1. CLC1120/1130.....................................3-6
2. CLC1150..............................................3-7
D. Solenoids ...................................................3-8
1. CLC1120/1130.....................................3-8
2. CLC1150..............................................3-9
E. Fans.........................................................3-10
F. Motors......................................................3-11
G. PCBs........................................................3-13
H. Paper Deck .............................................. 3-15
1. Sensors and Switches .......................3-15
2. Motors, Clutches, Solenoids,
and PCBs...........................................3-16
I. Variable Resistors (VR), Light-Emitting
Diodes (LED), and Check Pins by PCB...3-17
1. DC Driver PCB ..................................3-17
2. CPU PCB...........................................3-18
3. IP main PCB .....................................3-18
4. Analog Processor PCB......................3-19
5. Laser Driver PCB...............................3-19
6. Lamp Regulator PCB.........................3-20
7. DC Fuse PCB ....................................3-20
8. AC Fuse PCB ....................................3-21
9. Developing Bias PCB ........................3-21
10. HVT-AC PCB.....................................3-22
11. Potential Measurement PCB .............3-22

ii
CHAPTER 4 SERVICE MODE
1. DC-CPU...................................................4-32
2. R-CPU .....................................................4-48
D. ADJUST (adjustment mode)....................4-51
E. FUNCTION (operation check mode) .......4-97
F. OPTION (settings mode) ....................... 4-119
G. PG (test print) ........................................4-134
H. COUNTER (counter mode)....................4-136
A. Outline........................................................4-1
1. Starting Service Mode and
Making Selections ...............................4-2
2. Ending Service Mode ..........................4-3
3. Backing Up the RAM ...........................4-3
4. Basic Operation .................................4-12
B. DISPLAY (control display mode) .............4-14
C. I/O (I/O display mode)..............................4-32
CHAPTER 5 SELF DIAGNOSIS
A. Copier ........................................................5-1
B. RDF .........................................................5-22
A. General Timing Chart ............................... A-1
B. Signals and Abbreviations ........................ A-3
1. Signals ................................................ A-3
2. Abbreviations ...................................... A-8
C. General Circuit Diagram ........................... A-9
D. Paper Deck General Circuit Diagram ..... A-13
E. Specifications.......................................... A-15
APPENDIX
1. Type.................................................. A-15
2. System.............................................. A-15
3. Functions .......................................... A-16
4. Others............................................... A-17
5. Default Ratios ................................... A-17
6. Copying Speed ................................. A-18
7. CLC Paper Deck-E1 ......................... A-19
C. Sorter .......................................................5-23

1-1
CHAPTER 1 MAINTENANCE AND INSPECTION
CHAPTER 1 MAINTENANCE AND INSPECTION
A. Scheduled Servicing List
1. Copier
Caution:
Do not use solvents or oils other than those listed.
Externals and
controls
Original
exposure
Pickup/
feeding
Transfer drum
Laser exposure
Charging
Copyboard glass
Copyboard cover
Ozone filter
Air filter
Toner filter
Original reflecting cover
No. 1 through No. 3 mirrors,
Lens
Scanner rail
Attraction, registration
spring clutch
Attraction roller
Attraction roller cleaner pan
Registration roller
Pre-registration roller 2
Pre-registration roller 1
Registration path middle guide
Pickup vertical path roller
Transfer drum cleaner
Jam sensor (PS6) metal plate
(resin tape used for No.2
static eliminator mount)
Jam sensor (PS5) metal plate
(polishing roller motor
mounting plate)
Dust-proofing glass
Shielding plate, block
Use alcohol.
Or, 1 yr.
Or, 1 yr.
Or, 1 yr.
Use blower brush.
After cleaning, apply
silicone oil.
Use lubricant.
Remove unit, and clean.
Remove unit, and clean.
Remove unit, and clean. every 250,000
Remove unit, and clean.
Clean every 250,000
Clean the guide surface. every 250,000
Clean every 250,000
Apply lubricant to the
busihg of the brush.
Clean with lint-free paper;
then, clean with alcohol.
Be sure the part is
completely dry before
mounting.
Do not use water.
For post-cleaning charging
assembly, clean every
20,000 copies.
Unit Part Intervals
every
25,000 every 40,000 every
50,000 Remarks
Clean Replace Lubricate Adjust Inspect As of December 2000
every
20,000
1

CHAPTER 1 MAINTENANCE AND INSPECTION
1-2
Primary charging wire,
Post-cleaning charging wire
Separation, Internal/external
static eliminator charging
wire
Grid plate,
primary charging wire
cleaning pad
No. 2 cleaner blade
Black toner concentration
sensor
Pre-cleaner sensor
Pre-exposure lamp filter
Photosensitive drum butting
block
Drum heater slip ring
Photosensitive drum butting
roll
Bias electrode
Fixing inlet guide
Lower roller separation claw
Oil applying blade
Oil applying felt
Thermistor
Fixing oil
Waste toner
Hopper toner pan
Leakage breaker
Image adjustment
For primary charging
assembly, clean every
20,000 copies in low-
humidity areas; for high-
temperature/humidity
areas, clean every 15,000
copies.
In high-temperature/-
humidity areas, replace
every 15,000 copies.
For high-temperature/-
humidity areas, replace
every 15,000 copies.
Turn over blade.
See Note .
Clean with cotton wad;
see Note.
Clean when replacing
photosensitive drum.
Clean when replacing
photosensitive drum.
Dry wipe every 150.000
copeis.
Clean when replacing
developer.
Clean each time
developing assembly
(each color) is mounted.
Use solvent.
Use lint-free paper.
Turn over felt.
Dry wipe.
Remove build up of
toner.
Includes execution of auto
gradation correction.
Photosensitive
drum area
Developing
assembly
Fixing
assembly
Others
Unit Part Intervals
every
25,000 every 40,000 every
50,000 Remarks
every
20,000
(front)

1-3
CHAPTER 1 MAINTENANCE AND INSPECTION
Note:
If you have cleaned the sensor, be sure to execute the following in service mode:
• For the black toner concentration sensor, FUNCTION>INSTALL>INIT-D.
• For pre-cleaning sensor, FUNCTION>SENS-ADJ>CLN-OFST.
Unit Part Intervals
every
25,000 every 40,000 every
250,000 Remarks
2. Paper Deck
Pickup
assembly Feed roller, roll
Clean Replace Lubricate Adjust Inspect As of December 2000

CHAPTER 1 MAINTENANCE AND INSPECTION
1-4
B. Periodically Replaced Parts
As of December 2000
No. Part name Part number Q’ty Life (copies) Remarks
1 Ozone filter (FM2, 5, 6) FB2-4397 3 25,000 Or, 1 yr.
2 Air filter (FM1) FB4-4819 1 25,000 Or, 1 yr.
3 Air filter (FM3) FF5-8405 1 25,000 Or, 1 yr.
4 Air filter (FM14, 15) FB2-0247 2 25,000 Or, 1 yr.
5 Toner filter (FM5, 6) FB4-4442 2 25,000 Or, 1 yr.
6 Ozone filter (FM5) FB4-9641 1 25,000 Or, 1 yr.

1-5
CHAPTER 1 MAINTENANCE AND INSPECTION
C. Consumables and Durables
1. Copier As of December 2000
1 Cleaner blade (drum cleaner
assembly)
2 Drum cleaner scoop-up sheet
3 Side seal, front (drum cleaner
assembly)
4 Side seal, rear (drum cleaner
assembly)
5 No. 2 scoop-up sheet (pre-
cleaning sensor)
6 Grid plate (primary charging
assembly)
7 Primary charging assembly
cleaning pad, upper
8 Primary charging assembly
cleaning pad, lower
9 Primary charging wire, 100V
Primary charging wire, 120/
230V
10 Scanning lamp
11 Manual feeder pickup roller
12 Manual feeder feed roller
13 Manual feeder separation
roller
14 Attraction roller scraper
15 Waste toner case (6 pc/box)
16 Post-cleaning charging wire
Post-cleaning charging wire
17 Fixing cleaning belt (upper,
lower)
18 Drum cleaner end felt, front
19 Drum cleaner end felt, rear
20 No. 2 cleaning blade
21 Fixing upper roller
22 Oil applying felt
23 Y starter developer
24 M starter developer
25 C starter developer
No. Part name Part number Q’ty Life Remarks
(copies)
FB4-4677
FF5-3993
FF5-8392
FF5-8393
FG6-1046
FB4-5117
FF2-3552
FF2-3551
FY3-0030
FY3-0040
FH7-3349
FF5-4327
FF5-4331
FF2-4710
FF5-8427
FY9-7006
FY3-0030
FY3-0040
FB4-4543
FF5-2246
FF5-2247
FB2-0421
FB4-4484
FF5-9084
F42-3132
F42-3133
F42-3122
F42-3123
F42-3112
F42-3113
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
20,000
20,000
20,000
20,000
20,000
20,000
20,000
20,000
20,000
20,000
25,000
25,000
25,000
25,000
25,000
25,000
20,000
20,000
25,000
40,000
40,000
40,000
40,000
40,000
40,000
40,000
40,000
40,000
40,000
40,000
Simultaneously with
photosensitive drum.
Simultaneously with
cleaning blade.
Simultaneously with
cleaning blade.
Simultaneously with
cleaning blade.
Simltaneously with cleaning
blade.
For high temperature/high
humidity, 15,000.
For high temperature/high
humidity, 15,000.
For high temperature/high
humidity, 15,000.
Manual feeder counter
reading.
Manual feeder counter
reading.
Manual feeder counter
reading.
By user.
100V
120/230V
Simultaneously with
cleaning blade.
20,000 per edge.
Or, 1 yr.
20,000 per side.
120V UL only.
120V UL only.
120V UL only.

CHAPTER 1 MAINTENANCE AND INSPECTION
1-6
26 Bk starter developer
27 Separation/internal and
external static charging wires
Separation/internal and
external charging wires
28 Attraction brush unit
29 Transfer blade unit
30 Transfer drum cleaner
31 Polishing roller
32 Transfer drum sheet
33 Separation push-up roll
34 Transfer side scraper
35 Fixing lower roller
36 Re-pickup feed roller, front
(re-pickup assembly)
37 Re-pickup feed roller, rear (re-
pickup assembly)
38 Feed roller (re-pickup
assembly)
39 Separation roller (re-pickup
assembly)
40 Feed roller, front (duplexing
unit)
41 Feed roller, rear (duplexing
unit)
42 Oil applying blade
43 Fixing heater, upper
44 Fixing heater, lower
45 Pre-exposure lamp
46 Primary charging assembly
47 Separation charging assembly
48 Internal static eliminator
49 Eternal static eliminator
50 Post-cleaning charging
assembly
51 Insulating bush (fixing
assembly)
52 Pickup roller, front (cassette)
53 Pickup roller, rear (cassette)
54 Separation roller (cassette)
55 Feed roller (cassette)
56 Y developing assembly
57 M developing assembly
58 C developing assembly
59 Bk developing assembly
No. Part name Part number Q’ty Life Remarks
(copies)
F42-3102
F42-3103
FY3-0030
FY3-0040
FG6-0798
FG6-0797
FB4-4953
FB4-5111
FB4-4195
FB2-0631
FF5-2070
FB4-4486
FF5-2101
FF5-2102
FF5-2103
FF5-2104
FF5-8366
FF5-8367
FB4-4536
FH7-4617
FH7-4618
FH7-4619
FH7-4611
FH7-4612
FH7-4613
FG5-3181
FG6-0892
FG6-0795
FG6-0796
FG6-0801
FG6-0888
FB4-7807
FF5-7829
FF5-7830
FB2-7777
FF5-7837
FG6-0781
FG6-0782
FG6-0783
FG6-0784
1
1
1
1
1
1
2
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
40,000
40,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
100,000
100,000
100,000
100,000
100,000
100,000
100,000
100,000
100,000
100,000
100,000
100,000
100,000
150,000
150,000
150,000
150,000
150,000
150,000
150,000
250,000
250,000
250,000
250,000
500,000
500,000
500,000
500,000
120V UL only.
100V
120/230V
As a unit.
As a unit.
Simultaneously with transfer
sheet.
Or, 1 yr.
Duplexing counter
reading.
Duplexing counter
reading.
Duplexing counter
reading.
Duplexing counter
reading.
Duplexing counter
reading.
Duplexing counter
reading.
100V
120V
230V
100V
120V
230V
Per cassette holder.
Per cassette holder.
Per cassette holder.
Per cassette holder.

1-7
CHAPTER 1 MAINTENANCE AND INSPECTION
2. Paper Deck
No. Part name Part number Q’ty Life Remarks
(copies)
As of December 2000
1 Paper deck pickup roller
2 Paper deck feeding roller
3 Paper deck separation roller
FB4-2033
FB4-2034
FB2-7777
2
2
1
250,000
250,000
250,000
Actual number of copies.
Actual number of copies.
Actual number of copies.

1-9
1. Check the transfer charging system.
2. Clean the dust-proofing glass.
3. Clean and check the developing
assembly butting roll.
YES
NO
YES
NO
YES
NO
YES
NO
NO
YES
NO
YES
NO
YES
YES
NO
YES
NO
NO
YES
YES
NO
YES
NO
YES
NO
Conditions
· copy density at '5'
· text/photo mode
Select OPTION>BODY>PASCAL=0
in service mode.
Check the height of
each charging wire.
Clean the charging wires.*
*If the primary charging
wire is soiled, replace it.
Make sample copies using TEST in
service mode for the following:
0. normal image usingTest Sheet
1. PGTEST=4 using M mono color
2. PGTEST=4 using C mono color
3. PGTEST=4 usingY mono color
4. PGTEST=4 using Bk mono color
5. PGTEST=10
6. PGTEST=5 DENS 48
7. PGTEST=14 photo mode
(TXPH:1)
Adjusting the Left/Right Density Slope Correcting Difference in Density
Make a copy of
the Test Sheet.
Is the density different
between front
and rear?
Is the
density different
between front and rear on
the sample copy made
at PGTYPE=
10 or 5?
Is the difference
in density different from
one color to another?
Is the difference in
density gone?
Is the density higher
(darker) at the rear?
Check the coating of toner on the
developing cylinder. Check the
developing assembly butting roll
and the photosensitive drum butting
block.Clean them if soiled with toner.
Turn the adjusting screw
at the front of the primary
charging assembly
counterclockwise.
Execute test printing at
PGTYPE=10 or 5.
Turn the adjusting screw
at the front of the primary
charging assembly
clockwise.
Is the difference in
density gone?
Check to find out if the copyboard
glass is riding over something.
Clean the scanning lamp, reflecting
plate, mirror, standard white plate,
and copyboard glass.
Execute ADJUST>CCD>CCD-ADJ
in service mode.
Is the difference in
density gone?
Check the original scanning lamp.
Is the darkest
area of the test print
made for a 16-gradation
check too light?
Does the density
become lower (lighter)
gradually in continuous
copying mode?
Is the density low (light)
in all colors?
Execute FUNCTION>DPC>DPC
in service mode.
Is the value of
DISPLAY>DPOT>V00-500,
V00-700 normal?
Open the hopper, and insert the
door switch actuator. Check the
temperature and humidity using
DISPLAY>ANALOG>TEMP,
HUM in service mode.
Are the
temperature and humidity
readings normal?
Check the environment sensor.
To [A] of next page.
Check the high-voltage output of
the internal/external static eliminator.
Is the value
of ADJUST>DENS identical
with the value on
the label?
To [B] of next page.
Enter the data once again, and
make 50 copies.
Check the laser shutter and the
laser system.
Reference (normal values)
V00-500:430 to 570
V00-700:600 to 800
1. Check the insulating sheet of the
transfer blade for scratches and
peeling.
2. Check the shaft of the transfer
drum for play.
3. Check the cable inside the transfer
drum.
D. Image Adjustment Basic Procedure

1-10
NO
YES NO
YES
YES
NO
YES
NO
NO
YES
*Do not clean the grid plate.
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
[B]
[A]
Check the locked condition of the
developing assembly.
Check the value of DISPLAY>
DENS>DENS-Y, DENS-M, DENS-C,
DENS-K in service mode.
Is the density of
black normal?
Is the value of
DENS-K -20 or lower?
Compare the density of a test print
made of Bk halftone against one
made at time of installation or
replacement of the developer.
Is it more or less the same?
Is the surface of
the black toner concentration
sensor soiled?
Is the test print of Bk
mono halftone uneven?
Replace the Bk developer.
Check the supply of toner
from the hopper.
Go through the check
items for the developing
assembly.
Clean the surface of the
sensor.
Replace the
photosensitive drum and
developer (all colors).
Is the value of
DENS-Y, DENS-M,
DENS-C the specified
value ± 20?
Is it -20 or lower?
Remove the toner concentration
sensor from inside the developing
assembly.
Is the surface of
the sensor soiled?
Replace the developer.
Go through the check
items for the developing
assembly.
Check the supply of
toner from the hopper.
Replace the sensor.
Check Items for the Developing Assembly
1. Is the mechanism used to lock the developing assembly to
the photosensitive drum normal?
2. Is the position of the developing assembly normal?
3. Are the developing assembly butting roll and butting block
free of dirt?
4. Are the developing bias AC and DC outputs normal?
5. Is the developing cylinder coated with an even layer of toner?
Further, is the coating thick enough?
6. Is the position of the electrode of the developing cylinder
normal?
If a fault is found after making the above checks, perform
cleaning or adjustment as necessary.
If fogging or light density still occurs after making all above
checks (1 through 6), replace the developing assembly.
Correcting Fogging
Is fogging noted?
Is fogging noted
for all colors?
Is the primary charging
assembly soiled?
Execute FUNCTION>DPC>DPC
in service mode.
Is the value of
DISPLAY>DPOT>V00-500,
V00-700 normal>?
Check the developing assembly.
Is there a fault?
Replace the photosensitive drum and
developers (all colors).
To [D] of next page.
To [B].
Clean.*
Check the laser shutter,
and adjust the laser
power.
Reference (normal value):
V00-500:430 to 570
V00-700:600 to 800
Correct the fault.

1-11
YES
NO
YES
NO
YES
NO
NO
YES
NO
YES
YES
NO
NO
YES
YES
NO
Adjusting Transfer
[D] [C]
Check the locked condition of the
transfer blade in service mode.
Is a transfer fault noted?
Are there white spots
(transfer fault)?
Is the fault limited to
a specific color?
Are there white spots in
vertical direction?
Are there vertical
lines corresponding to
separation claws?
Make several
test prints. Does the
copy density decrease
(become light)?
Check the transfer blade.
Check the transfer blade.
Check the output of the separation
charging assembly.
Check the internal/external static
eliminator.
Adjusting the Original Exposure System/Color Balance
Check the positions of the copyboard glass,
standard white plate, original scanning lamp,
reflecting plate, and mirrors, and clean them.
Check to see if the No. 1 mirror/No. 2 mirror
base is not riding over the rail.
Check to find out if the value of
ADJUST>COLOR in service mode is
identical with the value recorded on the label.
Check the contact between the CCD and the
CCD driver PCB.
Set OPTION>BODY>PASCAL in service
mode to ’1’.
Execute ADJUST>CCD>CCD-ADJ in service
mode.
Is the image better? End.
Execute auto gradation correction
in user mode.
Make a copy of the CA1 Test Sheet.
Is the gray scale
(especially light area)
of the copy good?
End.
Make adjustments in ADJUST>COLOR>ADJ-Y,
ADJ-M, ADJ-C, ADJ-K in service mode.
To make copies darker, increase the setting.
To make copies lighter, decrease the setting.

1-12
E. Points to Note for Scheduled Servicing
Optical System
Part Tool and others Work and remarks
Process System
Part Tool and others Work and remarks
Developing System
Part Tool and others Work and remarks
Pickup/Feeding System
Part Tool and others Work and remarks
Attraction roller, attraction
roller cleaner pan Lint-free paper Cleaning (Remove the unit.)
Registration roller,
pre-registration roller 1/2 Alcohol, lint-free paper Cleaning
Pickup vertical path roller Alcohol, lint-free paper Cleaning
Registration path middle
guide Alcohol, lint-free paper Clean the guide surface
Developing roll Solvent Cleaning at time of replacing
the developer.
Developing assembly
butting roll, butting block
(photosensitive drum)
Solvent Cleaning at time of replacing
the drum.
Charging wire, shielding
plate, block Lint-free paper, alcohol Dry wiping; then, cleaning with alcohol
Do NOT use water.
(Note 2)
Pre-cleaning sensor
assembly, No.2 scoop-up
sheet assembly
Cotton wad, lint-free
paper
Blower brush
Use cotton wad to clean the
sensor assembly. (Note 3)
Black toner concentration
sensor assembly, No.2
blade assembly
Lint-free paper, blower
brush Remove the buildup of toner;
then, dry wipe.
Do NOT use solvent. (Note 4)
Pre-exposure lamp, filter,
dust-proofing glass,
potential sensor
Lint-free paper, blower
brush Cleaning
Fixing System
Part Tool and others Work and remarks
Transfer Drum System
Part Tool and others Work and remarks
Charging wire, shielding
plate, block Lint-free paper, alcohol Dry wiping; then, cleaning with alcohol.
Do NOT use water. (Note 2)
Transfer drum cleaner
assembly Blower brush Cleaning
Jam sensor (PS6) metal
plate resin tape section Blower brush Lint-free paper Dry wiping
Jam sensor (PS5) metal
plate Blower brush Lint-free paper Dry wiping
Thermistor
Separation claw
Inlet guide
Solvent Cleaning
Oil applying felt, oil applying
blade Paper rag Cleaning
Lens, CCD Blower brush Cleaning (Note 1)
Scanner rail Silicone oil Cleaning; then, lubricating
Reflecting plate, No.1
through No.3 mirrors Blower brush Cleaning
Copyboard sheet,
copyboard glass
Standard white plate
Alcohol, lint-free paper Cleaning
Note 1:Take care not to touch the mirror and lens.Take care so that the CCD will not be soiled with dust.
Note 2: Replace the primary charging wire; insert other charging wires after making sure that they are completely dry; further, be sure NOT to clean the grid plate.
Note 3: After mounting, execute FUNCTION>SENS-ADJ>CLN-OFST.Thereafter, record the values of ADJUST>SENS-ADJ>CLN-TH, CLN-TMP on the service label.
Note 4: After mounting, execute FUNCTION>INSTALL>INIT-D.

2-1
CHAPTER 2 STANDARDS AND ADJUSTMENTS
A. Image Adjustment System
1 Image Margin
The image margin of a copy is normal if it
is as follows when made in Direct with
original detection OFF.
Leading edge: 8/0 ± 1.5 mm (8.0 ± 2.0 mm)
Left/right: 2.0 ± 1.5mm (2.0 ± 1.5 mm)
Trailing edge: 2.5 ± 1.5 mm (4.5 ± 2.0 mm)
The value in parentheses represents
double-sided copying. Figure 2-1 Leading Edge Image Margin
Figure 2-2 Left/Right Image Margin
2Checking/Adjusting the Image
Margin
When making checks and adjustments,
observe the following order:
a. Adjusting the left/right registration
b. Adjusting the attraction position (ATT-T)
c. Adjusting the image margin (RG-XA,
RG-XB)
d. Adjusting the transfer delay (TR-
DELAY)
e. Adjusting the image read start position
(ADJ-XY)
f. Adjust the image trailing edge margin
(TR-END-A, TR-END-B)
CHAPTER 2 STANDARDS AND ADJUSTMENTS
2

CHAPTER 2 STANDARDS AND ADJUSTMENTS
2-2
a. Adjusting the Left/Right Registration
1) Make ten copies each from all cassettes,
multifeeder, and duplexing unit, and
check the left/right registration A; it is
correct if as follows:
for cassette: 2.0 ± 1.5 mm
for multifeeder: 2.0 ± 1.5 mm
for duplexing unit: 2.0 ± 1.5 mm
2) If the registration A is not as indicated,
perform the following:
Figure 2-3
Figure 2-4
A
[2]
[1]
§For the Cassette
1) Remove the cassette front cover from the
cassette holder you want to adjust.
2) Loosen the left/right screw [1].
3) Turn the adjusting screw [2] to adjust the
position of the horizontal registration
adjusting plate so that the horizontal
registration on an image is 2.0 ± 1.5 mm.
(A full turn causes a shift of about 0.7
mm.)
· To increase the registration along the
front, turn the adjusting screw
counterclockwise.
· To increase the registration along the
rear, turn the adjusting screw
clockwise.
4) After the adjustment, be sure to perform
"registering the paper width basic value."