3. E0024. E0035. E004COPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 11 TROUBLESHOOTING11-87CauseMain thermistor(TH1)Main thermistor(TH1)EnvironmentMain thermistor(TH1)DC controllerChecksExecute ‘ERROR’ in service mode( ), and turn on the poweronce again. Is either of thefollowing correct?•The fixing heater fails to turn on.•‘E002’ or ‘E003’ is indicated.Is the contact of the connectorsJ108 and J2755, relay connectorJ2757, and the connector J2745inside the fixing assembly good?Further, is the wiring from thethermistor to the connector J108on the DC controller PCB good?Is the thermistor in even contactwith the upper fixing roller?Clean the contact area of the ther-mistor. Is the problem corrected?Does the problem occur onlywhen the machine is turned on forthe first time in the morning?Replace the thermistor. Is theproblem corrected?]4]Step123456YES/NOYESNONOYESYESYESNOActionGo to the appropriatesection.Connect them securely.Install the thermistoronce again.End.•Advise the user that thesite is out ofspecification.•Advise the user not toturn on the machineuntil the room is warmenough.End.Replace the DCcontroller PCB.CauseFixing heaterAC driverDC controllerPCBChecksExecute ‘ERROR’ in service mode( ). Does the fixing heaterturn on immediately after power-on?Replace the AC driver. Is theproblem corrected?]4]Step12YES/NONOYESNOActionSee “The fixing heaterfails to operate.”End.Replace the DCcontroller PCB.Download service manual and resetter printer at http://printer1.blogspot.com
