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IV. TROUBLESHOOTING MALFUNCTIONS
A.
Troubleshooting Malfunctions
1 E000
Cause
Step
Thermistor
1
(TH1)
Heater,
2
Fuse (FU2)
Thermistor
3
(TH1)
Composite
4
power
supply PCB
DC control-
ler PCB
2 E001
Cause
Step
Thermistor
1
(TH1)
Thermistor
2
Composite
3
power
supply PCB
DC control-
ler PCB
COPYRIGHT © 1999 CANON INC.
Checks
Are the connection of J102 on the DC
controller PCB and the wiring to the
thermistor (TH1) normal?
Is there electrical continuity between
J207-1 and -2 on the fixing heater
side?
Replace the fixing upper unit. Is the
problem corrected?
Replace the composite power supply
PCB. Is the problem corrected?
Checks
Are the connection of J102 on the DC
controller PCB and the wiring to the
thermistor (TH1) normal?
Replace the fixing assembly upper
unit. Is the problem corrected?
Replace the composite power supply
PCB. Is the problem corrected?
CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 11 TROUBLESHOOTING
YES/NO
NO
Correct the connection
of J102 on the DC
controller PCB and the
wiring to the ther-
mistor (TH1).
NO
Check the wiring from
the composite power
supply PCB to the
fixing heater; if
normal, replace the
fixing assembly upper
unit.
YES
End.
YES
End.
NO
Replace the DC
controller PCB.
YES/NO
NO
Correct the connection
of J102 on the DC
controller PCB and the
wiring to the ther-
mistor (TH1).
YES
End.
YES
End.
NO
Replace the DC
controller PCB.
Action
Action
11-65
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Troubleshooting
