COPYRIGHT © 1999 CANON INC. CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
13-133
CHAPTER 13 TROUBLESHOOTING
41
The original scanner fails to move forward/in reverse.
Cause
Cable (broken,
disconnected)
Travel path
Original scanner
home position
sensor (PS1)
Connector, wiring
DC power supply
PCB
Original scanner
motor driver PCB
Original scanner
motor (PM15)
Action
Route the cable
properly.
Check the surface of the
rail for dirt, foreign
matter, or object in the
way of the scanner; as
necessary, clean,
lubricate, or repair.
Reference:
If the surface of the rail
is soiled, clean it with
alcohol, and apply a
small amount of
lubricant.
Check the wiring and
the light-blocking plate;
if normal, replace the
sensor.
Connect the connector
properly.
See "DC power is
absent."
End.
Replace the original
scanner motor.
Step
1
2
3
4
5
6
Yes/No
NO
NO
NO
NO
NO
YES
NO
Checks
Is the drive cable routed properly?
Is the rail free of dirt? Does the
mirror base move smoothly when
pushed by hand?
Is the original scanner home
position sensor (PS1) normal?
Are the connection and wiring of
the following connectors normal?
Original Scanner Motor Driver
PCB: J601 (J380)
DC power supply PCB: J951
Set the meter range to 50 VD, and
measure the voltage between the
following terminals; is it normal?
J601-2 (+) and -1 (-): about 5 V
J601-4 (+) and -3 (-): about 8 V
J601-8 (+) and -7 (-): about 38 V
Replace the original scanner motor
driver PCB. Is the problem
corrected?
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