Technical information

COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON CLC5000 REV.0 JAN. 2001
CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
5-129
4.1.22 E074
Transfer belt lifter sensor 1 (PS12), 2 (PS13)
1) Is the sensor normal? (See the instructions on how to check photo-
interrupters.)
NO: Replace the sensor.
Operation (faulty)
2) Turn the transfer belt lifter drive shaft by a finger. Does it turn
smoothly?
NO: Remove the cause of the faulty rotation.
Sensor (position)
3) Turn OFF and ON the power switch to clear ‘E074’.
Press the Start key, and check the operation of the lifter of the
transfer belt by the eye. Does the transfer belt move up and down?
YES: Check the position of the sensor; if normal, replace the DC control-
ler PCB.
Multifeeder pick-up motor
4) Turn OFF and ON the power switch once again, and press the Start
key. Does the multifeeder pick-up motor rotate?
NO: Check the wiring; if normal, replace the multifeeder pick-up motor.
Transfer belt lifter clutch (CL17)
DC controller PCB
5) Turn OFF and ON the power switch once again, and press the Start
key.
Does the voltage between J2208A-14 and J2208A-15 on the DC
controller PCB change from 0 V to 24 V?
YES: Check the wiring from the clutch to the DC controller PCB; if nor-
mal, replace the clutch.
NO: Replace the DC controller PCB.