Canon CLC 1120 Service Manual page 644

18 E071
· Check the detail code in service mode (COPIER>DISPLAY>ERR).
Cause
Side A sensor,
side B sensor,
C sensor (PS2,
PS3, PS4)
Signal plate
Transfer drum
locking assembly
Drum motor drive
assembly
DC driver PCB,
CPU PCB
COPYRIGHT © 1999 CANON INC.
Step
1 Replace the sensor indicated by the
detail code. Is the problem
corrected?
2 Is the condition of the signal plate
indicated by the detail code
normal?
3 Is the transfer drum locked
normally?
4 Is the drum motor drive assembly
subjected to overload?
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
Checks Yes/No Action
YES End.
NO If the plate is displaced,
mount it properly; if it is
damaged, replace it.
NO Check the locking
mechanism of the
transfer drum.
YES Remove the cause of
overload.
NO Replace the DC driver
PCB or the CPU PCB.
13-117