User Guide

COPYRIGHT © 1999 CANON INC. CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
13-141
CHAPTER 13 TROUBLESHOOTING
47 The registration roller fails to rotate.
Cause
Gear, pre-
registration motor
2 (PM8), pre-
registration motor
1 (PM9)
Registration roller
clutch (CL9)
Registration path
driver PCB
DC driver PCB,
CPU PCB
Action
Check the motor (PM8,
PM9) and the drive
system (e.g., gears).
Replace the clutch.
Replace the registration
driver PCB.
Replace the DC driver
PCB or the CPU PCB.
Step
1
2
3
Yes/No
NO
YES
YES
NO
Checks
Is the drive from the main motor
and the pre-registration motor 1/2
transmitted to each roller through
gears?
Set the meter range to 30 VDC, and
measure the voltage between J312-
A3 (+) and -A4 of the registration
path driver PCB. Does it change
from about 0 to about 24 V after
pickup?
Replace the registration path driver
PCB. Is the problem corrected?