Canon CLC5000 Service Manual page 491

CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
Transfer assembly (releasing)
11) Was the transfer assembly released while the transfer belt was ro-
YES: Check to make sure that the machine has stopped operating before
Transfer belt drive roller
12) Is there shavings of the belt on the surface of the roller?
YES: Clean the surface of the roller with alcohol.
Transfer blade
13) Is there shavings of the belt on the surface of the blade?
YES: Clean the surface of the blade with lint-free paper.
DC controller PCB
14) Operate the transfer belt shifting motor in service mode. Is opera-
YES: Check the drive system and the wiring; if normal, replace the DC
Transfer belt shifting motor (M12)
DC controller PCB
15) Replace the motor. Is the problem corrected?
YES: End.
NO:
b. E075–0005, 0006, 0007, 0008
Transfer belt edge sensor (PS17, PS18, PS19, PS20; flag operation)
1) Is the sensor represented by the detail code in question normal?
NO:
Transfer belt edge sensor
DC controller PCB
2) Is the sensor normal? (See the instructions on how to check photo-
NO:
YES: Replace the DC controller PCB.
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tating during servicing work?
If the transfer assembly releasing lever is freed before the transfer
belt stops to rotate after service work conducted with the help of
the cover switch actuator, 'E073' or 'E075' will occur when the
transfer unit is slid out.
sliding out the transfer unit.
tion noise heard?
controller PCB.
Replace the DC controller PCB.
(See the instructions on how to check photointerrupters.)
Check the movement of flag, and remove the cause.
interrupters.)
Check the wiring from the DC controller PCB to the sensor; if nor-
mal, replace the sensor.
COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON CLC5000 REV.0 JAN. 2001