COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 10 TROUBLESHOOTING10-59CauseMultifeederpick-up rollerDrive gearMultifeederpick-up clutch(CL3)Multifeeder traypaper sensor(PS1301)Multifeederpaper sensor(PS1301)Holding plateposition sensor(PS1302)Holding plateposition sensor(PS1302)Connectors(holding platesolenoid SL4drive; 24 Vsupply line)Holding platesolenoid (SL4)MultifeederPCBDC controllerPCBStep12345678910Yes/NoYESYESNONOYESNOYESNONOYESNOActionClean or replace theroller.Replace the damagedpart.Replace the multifeed-er pick-up clutch.Replace the multifeed-er tray sensor lever andthe lever. Position themcorrectly.Replace the sensor.Replace the holdingplate position sensorlever or spring. Positionthem correctly.Replace the sensor.Connect them securely.Replace the holdingplate solenoid.Replace the PCB.Replace the DC con-troller PCB.ChecksIs the multifeeder pick-up rollersoiled, worn, or deformed?Remove the multifeeder pick-upassembly, and check the drivegears. Is there any damaged part?Disconnect the connector J1303 ofthe multifeeder pick-up clutch fromthe multifeeder tray PCB, and mea-sure the resistance between theconnectors J1303-1 (MPTCLD*) andJ1303-2 (+24 UH) on the harnessside. Is it about 160 Ω?Is the multifeeder tray paper sensorlever or spring damaged/deformed?Are they positioned correctly?Replace the multifeeder tray papersensor. Is the problem corrected?Is the holding plate position sensorlever or spring damaged/deformed?Are they positioned correctly?Replace the holding position sensor.Is the problem corrected?Are the connector J213 on the DCcontroller PCB, connectors J641through J643 and J647 on the mainrelay PCB, connectors J671 andJ673 on the sub relay PCB, connec-tor J1302 of the holding plate sole-noid, and connector J102 of thepower supply connected securely?Disconnect the connector J1302 ofthe holding late solenoid from themultifeeder tray PCB, and measurethe resistance between the connec-tors J1302-1 (MPTSLD*) and J1302-2 (+24 UH) on the harness side. Is itabout 160 Ω?Replace the multifeeder tray PCB. Isthe problem corrected?1 Multifeeder Pick-Up AssemblyDownload free service manual at http://printer1.blogspot.com
