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COPYRIGHT © 2001 CANON INC. CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
20
E072
Cause
Transfer belt
cleaning web
rotation sensor
(PS10)
Operation
(faulty)
Transfer belt
cleaning web
motor (M12)
DC controller
PCB
Step
1
2
3
Checks
Is the sensor normal? (Check the
instructions on how to check
photointerrupters.)
Turn the web drive shaft by a finger.
Does it turn smoothly?
Turn OFF and ON the power switch;
then, select two-sided copying mode,
and press the Start key.
Does the voltage at J2218A-4 on the
DC controller PCB change from 0 V
to 24 V?
Yes/No
NO
NO
YES
NO
Action
Replace the sensor.
Remove the cause of
poor rotation.
Check the wiring from the
DC controller PCB to the
transfer belt cleaning web
motor; if normal, replace
the transfer belt web
motor.
Replace the DC controller
PCB.
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