COPYRIGHT
©
2001 CANON INC. 2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001
CHAPTER 6 TROUBLESHOOTING
6-144
4.1.89 The toner feed motor (M6) inside the cartridge fails to operate
----------
1) Execute the following in service mode:
COPIER>FUNCTION>PART-CHK>MTR. Does the toner feed
motor inside the cartridge rotate?
NO: Go to step 3).
DC controller PCB, J243, J245
2) Execute the following in service mode to rotate the hopper motor:
COPIER>FUNCTION>PART-CHK>MTR. Does the voltage be-
tween J512-B4 (+) and -B5 (–) on the DC controller PCB change to
24 V?
NO: Replace the DC controller PCB.
YES: Check the connection of the relay connectors J243 and J245.
4.1.90 The toner feed motor (M18) inside the hopper fails to rotate
----------
1) Execute the following in service mode:
COPIER>FUNCTION>PART-CHK>MTR. Does the toner feed
motor inside the hopper rotate?
NO: Go to step 3).
DC controller PCB, J138, J143
2) Execute the following in service mode to start the toner feed motor
inside the hopper: COPIER>FUNCTION>PART-CHK>MTR. Does
the voltage between J504-B12 (+) and -B13 (
−−
−−
−) on the DC controller
PCB change to about 24V?
NO: Replace the DC controller PCB.
YES: Check the connection of the relay connectors J138 and J143.
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