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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
37
The scanner fails to move forward/in reverse.
Cause
Cable (broken,
displaced)
Obstacle in path
Scanner home
position sensor
(PS37)
Connector,
Wiring
DC power supply
Scanner motor
driver
Scanner motor
(M29)
Step
1
2
3
4
5
6
Checks
Is the drive cable routed correctly?
Is the rail free of dirt? Does the mirror
mount move smoothly when pushed
by hand?
Is the scanner home position sensor
(PS37) normal? (See the instructions
on how to check photointerrupters.)
Are the connection of the following
connectors and the wiring between
the connectors normal?
J602 on the scanner motor driver
PCB
J1306 on the reader unit controller
PCB
Set the meter to the 50VDC range,
and measure the voltage between
the following terminals on the scan-
ner motor driver. Is it normal?
J601-2 (+) and –1 (–): about 5 V
J601-4 (+) and –3 (–): about 8 V
J601-6 (+) and –5 (–): about 24 V
Replace the scanner motor driver. Is
the problem corrected?
Yes/No
NO
NO
NO
NO
NO
YES
NO
Action
Re-route the cable.
Check the rail for dirt or
foreign object; as neces-
sary, clean or lubricate.
REF.
If the surface of
the rail is soiled,
use alcohol to
clean it; then,
apply a small
amount of
silicone oil
available for the
fixing roller.
Check the wiring and
light-blocking plate; if
normal, replace the
sensor.
Re-connect it.
See “DC power is ab-
sent.”
End.
Replace the scanner
motor.
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