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The Toner Feed Motor (M6) Inside The Cartridge Fails To Operate; The Toner Feed Motor (M18) Inside The Hopper Fails To Rotate - Canon iR8500 Service Manual

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CHAPTER 6 TROUBLESHOOTING

4.1.89 The toner feed motor (M6) inside the cartridge fails to operate

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1) Execute the following in service mode:
NO:
DC controller PCB, J243, J245
2) Execute the following in service mode to rotate the hopper motor:
NO:
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

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

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