38. The vertical path roller fails to rotate.39. The registration roller fails to rotate.CHAPTER 11 TROUBLESHOOTING11-105COPYRIGHT © 1997 CANON INC. CANON NP6560/NP6360/NP6260 REV. 0 NOV. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CauseBelt, Gear,CouplingRegistrationpaper sensor(PS23)Registrationroller driveclutch (CL9)DC controllerPCBChecksIs the drive from the main motor(M1) transmitted to the registrationroller through the belt, gear, andcoupling?Is the registration paper sensor(PS23) normal?Connect the – probe of the meterto GND and the + probe to J108-A5. Does the voltage change fromabout 24 to 0 V as soon as theregistration roller starts to rotate?Step123YES/NONONOYESNOActionInstall the belt, gear, andcoupling correctly.Replace the sensor(PS23).Replace the clutch(CL9).Replace the DC con-troller PCB.CauseBelt, Gear,CouplingVertical pathroller clutchDC controllerPCBChecksIs the drive from the pick-up motor(M2) transmitted to each verticalpath roller through the belt, gear,and coupling?Connect the – probe of the testerto GND and the + probe to the ter-minal indicated. Does the voltagechange from about 24 to 0 V assoon as the roller starts to rotate?Vertical path 0 drive clutch (CL18) J115-A4Vertical path 1 drive clutch (CL15) J117-A15Vertical path 3 drive clutch (CL11) J117-B2Vertical path 4 drive clutch (CL13) J130-B2Step12YES/NONOYESNOActionInstall the belt, gear, andcoupling correctly.Replace the appropriateclutch.Replace the DC con-troller PCB.
