Table of Contents
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CHAPTER 10 TROUBLESHOOTING
I.
Procedure ....................................10-3
B. Periodical Servicing.....................10-4
II.
A. Image Adjustment .......................10-5
registration ON timing) ...........10-5
306; blank shutter ON
timing).....................................10-6
Edge Non-Image Width ([3],
timing).....................................10-7
Registration ............................10-8
(No.311; left/right margin).......10-9
Intensity ..................................10-10
7. AE Adjustment .......................10-11
B. Exposure System ........................10-15
Cable ......................................10-15
optical distance between No.1
Tension ...................................10-17
Positioning Tool ......................10-17
Scanning Lamp ......................10-18
Solenoid .................................10-20
C. Image Formation System ............10-21
Solenoid .................................10-21
Cable ......................................10-22
Primary Charging Roller.........10-22
Unit .........................................10-23
5. Attaching the Drum Heater ....10-23
D. Pick-Up/Feeding System .............10-25
Roller ......................................10-25
Pick-up Roller .........................10-25
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COPYRIGHT © 1997 CANON INC.
Plate Cam (multifeeder) .........10-26
E. Fixing System..............................10-27
the Fixing Film........................10-27
the Heater Connector.............10-27
Roller Pressure ......................10-28
the Fixing Upper Unit .............10-29
5. Adjusting the Nip ....................10-30
6. Routing the Drive Belt ............10-31
Registance .............................10-31
Temperature Control Value.....10-32
F. Electrical......................................10-35
1. After Replacing the PCB ........10-35
2. Clearing the Back-Up RAM ....10-35
Photointerrupters....................10-36
Paper width Sensor ................10-43
5. Setting the Paper Size for the
Universal Cassette .................10-44
III.
FAULTS.............................................10-45
A. Initial Checks ...............................10-45
1. Site Environment ....................10-45
2. Checking the Originals ...........10-45
Glass ......................................10-45
4. Checking the Paper................10-45
5. Others.....................................10-46
B. Samples of Image Faults.............10-48
C. Troubleshooting Faulty Images....10-49
(half-tone only). ......................10-49
(black solid also).....................10-50
(overall, extremely). ................10-50
(front too dark)........................10-52
(front too light). .......................10-52
6. The copy is foggy (overall). ....10-53
7. The copy is foggy (vertical). ...10-54
(vertical; thick fuzzy lines). .....10-54
(vertical, fine)..........................10-54
CANON NP6218 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIMÉ AU JAPON)
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Chapters
Table of Contents
Troubleshooting
