Canon CLC 5000, Service Manual

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COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON CLC5000 REV.0 JAN. 2001
CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
5-152
4.1.47 The scanner fails to move forward/in reverse.
Cable (broken, displaced)
1) Is the drive cable routed correctly?
NO: Re-route the cable.
Obstacle in path
2) Is the rail free of dirt? Does the mirror mount move smoothly when
pushed by hand?
NO: Check the rail for dirt or foreign object; as necessary, clean or lu-
bricate.
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.
Scanner home position sensor (PS37)
3) Is the scanner home position sensor (PS37) normal? (See the in-
structions on how to check photointerrupters.)
NO: Check the wiring and light-blocking plate; if normal, replace the
sensor.
Connector
Wiring
4) Are the connection of the following connectors and the wiring be-
tween the connectors normal?
J602 on the scanner motor driver PCB
J1306 on the reader unit controller PCB
NO: Re-connect it.
DC power supply
5) Set the meter to the 50VDC range, and measure the voltage be-
tween the following terminals on the scanner motor driver. Is it nor-
mal?
J601-2 (+) and –1 (–):about 5 V
J601-4 (+) and –3 (–):about 8 V
J601-6 (+) and –5 (–):about 24 V
NO: See “DC power is absent.”
Scanner motor driver
Scanner motor (M29)
6) Replace the scanner motor driver. Is the problem corrected?
YES: End.
NO:
Replace the scanner motor.