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COPYRIGHT
©
1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10
TROUBLESHOOTING
I. MAINTENANCE AND INSPECTION..10-3
A. Image Adjustment Basic
Procedure....................................10-3
B. Periodical Servicing.....................10-4
II. STANDARDS AND
ADJUSTMENTS...............................10-5
A. Image Adjustment .......................10-5
B. Exposure System ........................10-15
C. Image Formation System ............10-21
D. Pick-Up/Feeding System.............10-25
E. Fixing System..............................10-27
F. Electrical......................................10-35
III. TROUBLESHOOTING IMAGE
FAULTS.............................................10-45
A. Initial Checks...............................10-45
B. Samples of Image Faults ...........10-48
C. Troubleshooting Image Faults .....10-49
IV. TROUBLESHOOTING
MALFUNCTIONS .............................10-63
A. Troubleshooting Malfunctions......10-63
V. TROUBLESHOOTING FEEDING
PROBLEMS......................................10-78
A. Jams (copy paper).......................10-78
B. Feeding Faults.............................10-81
VI. ARRANGEMENT/FUNCTIONS OF
THE ELECTRICAL PARTS...............10-82
A. Sensors .......................................10-82
B. Clutches, Solenoids, and
Switches ......................................10-84
C. Motors, Heaters, and Lamps.......10-86
D. PCBs ...........................................10-88
E. Cassette Feeding Module-A2......10-90
F. Variable Resistors (VR) and check
Pins by PCB ................................10-92
VII. SERVICE MODE..............................10-94
A. Outline .........................................10-94
B. Using Service Mode....................10-94
C. Control Display Mode [1].............10-97
D. I/O Mode [2] ................................10-99
E. Adjustment Mode [3] ...................10-102
F. Operation/Inspection Mode [4] ....10-105
G. Specification Settings Mode [5]...10-107
H. Counter Mode [6] ........................10-108
VIII. SELF DIAGNOSIS............................10-109
A. Copier..........................................10-109
B. Self Diagnosis (ADF)...................10-113
C. Self Diagnosis (Sorter)................10-114
This chapter provides tables of maintenance/inspection, standards/adjustments, and identification
(image fault/malfunction).