E012 - Canon CLC5000 Service Manual

4.1.5 E012

1) Does the photosensitive drum motor (M21) rotate during initial ro-
YES: Go to step 4.
Excess load
2) Slide out the primary charging assembly, and check the condition
YES: Put a finger through the primary charging assembly slot, and push
Photosensitive drum motor (M21)
DC controller PCB
3) Set the meter to the 5VDC range, and measure the voltage between
YES: Replace the photosensitive drum motor (M21).
NO:
DC controller PCB
Photosensitive drum motor (M21)
4) Set the meter to the 5VDC range, and measure the voltage between
YES: Replace the DC controller PCB.
NO:
COPYRIGHT © 2001 CANON INC.
CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
tation?
of the cleaning blade by the naked eye. (Do not slide out the process
unit.)
Is the cleaning blade bent?
the blade support plate to correct the bend; then, slide out the pro-
cess unit.
Check if the photosensitive drum should be subject to excess load.
Replace the cleaning blade as necessary.
J2225B-2 (+; M210N) and J2225B-3 (–; GND) on the DC controller
PCB.
Turn OFF and then ON the power switch. Does the voltage change
from about 5 V to about 0 V when the main motor starts to rotate?
Check the wiring from J2225B to the drum motor; if normal, re-
place the DC controller PCB.
J2226A-12 (+; M21PLL*) and J2226A-14 (–; GND) on the DC con-
troller PCB.
Turn OFF and then ON the power switch. Does the voltage change
from about 3 V to about 0 V when the main motor starts to rotate?
Check the wiring from J2225B to the photosensitive drum motor;
if normal, replace the photsensitive drum motor.
2000 2000 2000 2000 CANON CLC5000 REV.0 JAN. 2001
5-111