45. The hopper motor (M10) fails to operate.CHAPTER 11 TROUBLESHOOTING11-109COPYRIGHT © 1997 CANON INC. CANON NP6560/NP6360/NP6260 REV. 0 NOV. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CauseToner leveldetection circuitDC controllerPCBJ770, J719ChecksExecute ‘HPPR_MTR’ in servicemode ( ). Does the hoppermotor rotate?Does bit 10 of ‘P002’ in servicemode ( ) indicate ‘0’ (tonerabsent)?When the hopper motor is turnedon by executing ‘HPPR-MTR’ inservice mode ( ), does thevoltage between J105-A1 (+) andJ105-A2 (–) on the DC controllerPCB change from 24 to about 0V?Is the connection of relay connec-tors J770 and J719 secure?]4]]4]]4]Step1234YES/NONOYESNONOActionGo to step 3.If there is toner in thedeveloping assembly,replace the toner detec-tion PCB.Replace the DC con-troller PCB.Connect the connectorscorrectly.
