Canon CLC 1120 Service Manual page 642

Cause
Photosensitive
drum
Potential sensor
Photosensitive
drum
CPU PCB
COPYRIGHT © 1999 CANON INC.
Step
20 Is the photosensitive drum
grounded properly?
21 Clean the potential sensor. Is the
problem corrected?
22 Replace the photosensitive drum. Is
the problem corrected?
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
Checks Yes/No Action
NO Ground the drum
properly.
YES End.
YES End.
NO Replace the CPU PCB.
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