Canon PC981 Service Manual - Page 327
YES/NO, Cause, Checks, Action, Replace the DC
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CHAPTER 11 TROUBLESHOOTING 2 E000 Cause Thermistor (TH1) Heater, Fuse (FU2) Thermistor (TH1) Composite power supply PCB DC controller PCB 3 E001 Cause Thermistor (TH1) Thermistor Composite power supply PCB DC controller PCB Step 1 Checks Are the connection of J102 on the DC controller PCB and the wiring to the thermistor (TH1) normal? 2 Is there electrical continuity between J207-1 and -2 on the fixing heater side? 3 Replace the fixing upper unit. Is the problem corrected? 4 Replace the composite power supply PCB. Is the problem corrected? YES/NO NO NO YES Action Correct the connection of J102 on the DC controller PCB and the wiring to the thermistor (TH1). Check the wiring from the composite power supply PCB to the fixing heater; if normal, replace the fixing assembly upper unit. End. YES End. NO Replace the DC controller PCB. Step 1 Checks Are the connection of J102 on the DC controller PCB and the wiring to the thermistor (TH1) normal? 2 Replace the fixing assembly upper unit. Is the problem corrected? 3 Replace the composite power supply PCB. Is the problem corrected? YES/NO NO YES Action Correct the connection of J102 on the DC controller PCB and the wiring to the thermistor (TH1). End. YES End. NO Replace the DC controller PCB. 11-62 11-62 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)