Canon 1000 Service Manual page 433

18 Adjusting the Position of the
Duplexing Unit Stopper Plate
Solenoid (SL12) ........................ 7-32
19 Adjusting the Position of the
Duplexing Unit Stacking Assembly
Paper Guide Plate .................... 7-33
20 Adjusting the Position of the
Duplexing Unit Feeding Roller
Solenoid (SL13) ........................ 7-33
21 Attaching the Timing Belt for the
Duplexing Unit Stacking
Assembly Paper Guide Plate .... 7-34
22 Adjusting the Position of the
Separation Claw Solenoid
(SL15) ....................................... 7-34
23 Adjusting the Position of the
Upper Fixing Web Take-Up
Solenoid (SL3) .......................... 7-34
24 When Replacing the
Registration Roller Unit ............. 7-34
25 Correcting Skew Movement
(slope of the registration
roller unit) ................................. 7-35
H. Laser Exposure System .................. 7-36
1 When Replacing the Laser
Unit ........................................... 7-36
2 When Replacing the Video
Controller PCB ......................... 7-36
3 When Replacing the BD Unit .... 7-36
4 Adjusting the Laser Power ........ 7-36
5 Adjusting the Laser Intensity .... 7-39
6 Laser Focus Adjustment ........... 7-40
I. Fixing Assembly-Related Parts ....... 7-41
1 Points to Note When Replacing
the Fixing Heater ...................... 7-41
2 Adjusting the Nip (fixing
pressure adjusting nut) ............. 7-41
J. Electrical ADJUSTMENT ................. 7-42
1 When Replacing Major Parts .... 7-42
2 Checking the Environment
Measurement PCB ................... 7-44
3 Checking the High Voltage
Control System ......................... 7-45
4 Checking the Photointerrupters 7-47
5. Using a Meter ........................... 7-47
6. Using Service Mode ................. 7-47
III. TROUBLESHOOTING IMAGE
PROBLEMS ........................................... 7-52
A. Initial Checks ................................... 7-52
1. Checking the Site of Installation 7-52
2. Checking the Originals ............. 7-52
3. Checking the Copyboard Cover,
Copyboard Glass, and Standard
White Plate ............................... 7-52
COPYRIGHT © 2001 CANON INC. CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
4. Checking the Charging
Assemblies ............................... 7-52
5. Checking the Developing
Assembly .................................. 7-52
6. Checking the Paper .................. 7-52
7. Checking the Periodically
Replaced Parts ......................... 7-52
8. Others ....................................... 7-53
B. Standard Image ............................... 7-53
1. Gray Scale ................................ 7-53
2. Color Patches ........................... 7-53
3. Photo ........................................ 7-53
4. 3-Color Gradation Scale ........... 7-53
5. Halftone Band ........................... 7-53
6. Fogging ..................................... 7-54
C. Test Prints ........................................ 7-56
1. Selecting a Test Pattern ............ 7-56
2. 256-Color Test Print
(PGTYPE=02) .......................... 7-57
3. 256-Gradation Test Print
(PGTYPE=03) .......................... 7-58
4. 17-Gradation Test Print
(PGTYPE=04) .......................... 7-59
5. Halftone Test Print
(PGTYPE=05) .......................... 7-60
6. Grid Test Print (PGTYPE=06) ... 7-61
7. Image Position Correction
Pattern (PGTYPE=07) .............. 7-62
8. Horizontal Stripe (FF activation)
Test Print (PGTYPE=10) .......... 7-63
9. Full Color 17-Gradation
(YMCBk+RGB+gray) Test Print
(PGTYPE=14) .......................... 7-64
D. Troubleshooting Image Faults .......... 7-65
1 The image is too light
(all colors). ............................... 7-65
2 The image is too light
(specific color). ........................ 7-65
3 The copy has uneven density
(vertical). ................................... 7-65
4 The copy has uneven density
(horizontal). ............................. 7-67
5 The copy has fogging. .............. 7-68
6 The copy has vertical streaks/
vertical lines. ............................. 7-68
7 The copy has white streaks/
white lines (vertical). ................. 7-72
8 The copy has horizontal
streaks/horizontal fogging. ........ 7-75
9 The copy has white spots
(horizontal). .............................. 7-77
10 The copy has white spots. ........ 7-78