COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 10 TROUBLESHOOTING10-45B. Faults Not Identified by Error CodesNo.1234567891011No.1213141516171819202122ItemAC power is absent in theprinter unit.DC power is absent in theprinter unit. (+5 V, +24 VB)+24 UH is absent.+24 VAR is absent.The transparency sensor 1/2is faulty.The face-down tray full sen-sor is faulty.The pick-up paper size iswrong.The cassette is absent.The cassette has no paper.The multifeeder tray has nopaper.The multifeeder paper widthis wrong.ItemThe color toner cartridge isabsent.The color toner cartridge isnot set properly.The color toner cartridge hasno toner.The black toner cartridge isabsent.The black toner cartridgehas no toner.The waste toner case is full.The duplexing unit fails toturn on.The horizontal registrationmotor is faulty.The duplexing motor isfaulty.The reversing roller releasingsolenoid is faulty.The duplexing flapper sole-noid is faulty.Page10-4610-4710-4810-4910-5010-5010-5110-5110-5210-5210-53Page10-5310-5410-5410-5510-5510-5610-5610-5610-5710-5710-57Download free service manual at http://printer1.blogspot.com