54. The fixing heater fails to operate.COPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 11 TROUBLESHOOTING11-116CauseThermal switch(TP1)Fixing heater(H1, H2)AC driver PCBDC controllerPCBChecksSlide out the fixing assembly, andconnect the probes of the tester toboth terminals of the thermalswitch (TP1). Is there electricalcontinuity?Slide out the fixing assembly, andconnect probes of the meter toboth terminals of the fixing heater(H1, H2). Is there electricalcontinuity?Is the voltage between theconnectors on the DC controllerPCB indicated in the table 5 V?Step123YES/NONONOYESNOActionReplace the thermalswitch.Replace the fixingheater.Replace the AC driverPCB.Replace the DCcontroller PCB.HeaterMain heater (H1)Sub heater (H2)(+)J102B-5J102B-3(–)J102B-1J102B-1Download service manual and resetter printer at http://printer1.blogspot.com
