COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)A. After executing test printing in service mode, a jam occurs without the leading edgeof print paper reaching the secondary transfer belt assembly.CHAPTER 10 TROUBLESHOOTING10-61CauseRegistrationrollerConnector(registrationclutch CL1drive 24 V sup-ply line)Registrationclutch (CL1)Registrationpaper sensorPS1 (detectionmechanism)Registrationpaper sensor(PS1)DC controllerPCBStep12345Yes/NoYESNONOYESYESNOActionIf damaged or worn,replace it. If soiled,clean it.Connect the connector.Replace the registra-tion clutch.Replace the damagedor worn part. Positionthe spring correctly.Replace the sensor.Replace the DC con-troller PCB.ChecksIs the registration roller worn,deformed, or soiled?Are the connectors J212 on the DCcontroller PCB and the connectorJ37 on the relay PCB connectedsecurely?Disconnect the connector J37 of theregistration clutch, and measure theresistance between the connectorsJ37-1 (+24 UH) and J37-2 (REG-CLD*) on the harness side. Is itabout 210 Ω?Is the registration paper sensor(PS1) lever damaged or worn? Isthere any displaced spring?Replace the registration paper sen-sor. Is the problem corrected?3 Transfer/Fixing AssemblyDownload free service manual at http://printer1.blogspot.com
