IV. TROUBLESHOOTING MALFUNCTIONSA. Troubleshooting Malfunctions1. E000COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON) 10-63CHAPTER 10 TROUBLESHOOTINGChecksDisconnect the connector (J4) ofthe fixing heater, and press thepower switch while holding downthe service mode switch. (Thisclears E000; about 2 sec later,the power switch turns offautomatically. Is the connection ofJ47 (4-pin connector near the rearside plate fixing assembly)connected properly?Let the fixing assembly coolsufficiently, and disconnect J47. Isthe resistance between J47-1 and-2 on the thermistor side about1.4 M and resistance betweenJ47-3 and -4 about 3.7 M ?Is electrical continuity presentbetween J4-1 and -2?Replace the upper fixing unit. Isthe problem corrected?Replace the fixing heater driverPCB. Is the problem corrected?CauseJ47(relayconnector tothermistor)ThermistorHeaterThermistorFixing heaterdriver PCBDC controllerPCBStep12345ResultsNONONOYESYESNOActionRe-connect it.Replace the fixing upperunit.Replace the fixing upperunit.End.End.Replace the DCcontroller PCB.
