COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 10 TROUBLESHOOTING10-65CauseRollers(duplexing unit)Feeding guideReversingroller,Duplexingfeeding rollerDrive gearSensor leverStep12345Yes/NoYESYESYESYESYESNOActionRemove the paper lintand dust.Remove any foreignmatter. If burrs arefound, replace thefeeding guide.If worn or deformed,replace the roller.Replace the worn orcracked gear.Position the sensorlever correctly so that itmoves smoothly. Ifdamaged or deformed,replace it.Replace the duplexingunit.ChecksAre the rollers inside the duplexingunit coated with paper lint or dust?Is there foreign matter or burrs onthe feeding guide?Is the reversing roller or the duplex-ing feeding roller worn or deformed?Is the drive gear worn or cracked?Is any sensor lever damaged ordeformed?5 Duplexing UnitDownload free service manual at http://printer1.blogspot.com
