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CHAPTER 13 TROUBLESHOOTING
13-112
COPYRIGHT
©
1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
74 The cartridge inside toner feeder motor (M6) fails to operate.
Step
1
2
Action
Go to step 3.
Replace the DC
controller PCB.
Check the connection
of the relay connectors
J243 and J245.
Checks
Execute COPIER>FUNCTION>PART-
CHK>MTR in service mode. Does the
cartridge inside toner feeder motor rotate?
Execute COPIER>FUNCTION>PART-
CHK>MTR in service mode to operate
the hopper motor. Is the voltage between
J512-B4 (+) and J512-B5 (-) on the DC
controller PCB 24 V?
Yes/No
NO
NO
YES
Cause
DC controller
PCB
J243, 245
75 The hopper inside toner feeder motor (M18) fails to operate.
Step
1
2
Action
Go to step 3.
Replace the DC
controller PCB.
Check the connection
of the relay connectors
J138 and J143.
Checks
Execute COPIER>FUNCTION>PART-
CHK>MTR in service mode. Does the
hopper inside toner feeder motor rotate?
Execute COPIER>FUNCTION>PART-
CHK>MTR in service mode to operate
the hopper inside toner feeder motor. Is
the voltage between J504-B18 (+) and
J504-B19 (-) on the DC controller PCB
about 24 V?
Yes/No
NO
NO
YES
Cause
DC controller
PCB
J138, 143
76 The drum heater fails to operate.
Step
1
2
3
4
Action
The drum heater is
normal.
Replace the DC
controller PCB.
End.
Replace the drum
heater.
Replace the drum
heater controller PCB.
Checks
Open the front door, and release the
fixing/feeding assembly. Are the ends of
the drum warm? (Do not touch the surface
of the drum.)
Set the meter range to 12 VDC, and
connect the probes to J505-A8 (+) and
J505-A7 (-) on the DC controller PCB. Is
the voltage between the terminals 5 V
during standby?
Replace the heater driver PCB. Is the
problem corrected?
Remove the drum, and set the meter range
to 'W × 1'. Does the index of the meter
swing when ht probes are connected to
both terminals?
Yes/No
YES
NO
YES
NO
YES
Cause
DC controller
PCB
Heater driver
PCB
Drum heater
(H3)
Drum heater
controller PCB