Canon CLC 1120 Service Manual page 637

CHAPTER 13 TROUBLESHOOTING
11 E021
· Check the detail code in service mode (COPIER>DISPLAY>ERR).
Cause
------------
Connector
Developing
assembly HP
sensor (PS49,
PS51, PS53,
PS55)
Developing
assembly locking
drive assembly
Developing
assembly locking
motor (PM1,
PM2, PM3, PM4)
DC fuse PCB
Developing
assembly driver
PCB
DC driver PCB,
CPU PCB
13-110
COPYRIGHT © 1999 CANON INC.
Step Checks
1 Is the detail code 0100, 0200, 0300,
or 0400?
2 Is the connector of the developing
assembly HP sensor indicated by
the detail code connected securely?
3 Replace the developing assembly
HP sensor indicated by the detail
code. Is the problem corrected?
4 Is the developing assembly locking
drive assembly subjected to foreign
matter or damage?
5 Replace the developing assembly
locking motor indicated by the
detail code. Is the problem
corrected?
6 Is 24 V present between J330-3
and -4 and 5 V between J330-1
and -2 on the developing assembly
locking driver PCB?
7 Replace the developing assembly
locking driver PCB. Is the problem
corrected?
Yes/No
YES
YES
YES
YES
YES
NO
YES
NO
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Action
Go to step 4.
Connect the connector
securely.
End.
Remove any foreign
mater. If damage is
found, remove the cause,
and make repairs.
End.
Replace the DC fuse
PCB.
End.
Replace the DC driver or
the CPU PCB.