11-96CHAPTER 11 TROUBLESHOOTINGCOPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)33 The pre-exposure lamp fails to turn on.34 The hopper motor fails to rotate.CausePre-exposurelamp (LA2)DC controllerPCBChecksReplace the pre-exposure lamp.Does it turn on normally?Step1YES/NOYESNOActionEnd.Check the wiring fromthe DC controller PCB tothe pre-exposure lamp;if normal, replace theDC controller PCB.CauseHopper motor(M4)Motor driver 1PCBDC controllerPCBChecksExecute ‘409’ in service mode [4].Does the hopper motor rotate?Turn off the power switch, anddisconnect J206 from the motordriver. Set the meter to the x1KΩrange, and measure theresistance between J206-7 andJ206-8 on the motor side. Is itabout 63 Ω?Replace the motor driver 1 PCB.Is the problem corrected?Step123YES/NOYESNOYESNOActionSee “The Add Tonerindicator fails to turn off.”Check the wiring fromJ206 to the motor; ifnormal, replace thehopper motor.End.Replace the DCcontroller PCB.
