CHAPTER 13 TROUBLESHOOTINGCOPYRIGHT © 2002 CANON INC. 2000 CANON iR1600/iR2000 REV.1 JAN. 200213-323.3.18 The copy has blurred images.Machine state1) Execute ‘PRINT’. Is the output image blurry? (See 5.5.5 of Chap-ter 13.)YES: Go to step 5.CS unit drive belt2) Is the drive belt wound around the drive pulley of the reader unittoo taut or too loose?YES: Correct the drive belt. If the fault cannot be corrected, replace thedrive belt.Carriage rail3) Move the carriage slowly by hand. Does it move smoothly?NO: Clean the surface of the carriage rail with alcohol; then, apply asmall amount of lubricant.Rear motor, Original detection/Reader motor drive PCB, Image processor PCB4) Is the rear motor operating normally?YES: Replace the original detection/reader motor drive PCB. If the faultis not corrected, replace the image processor PCB.NO: Replace the reader motor.Feeding assembly5) Is there foreign matter or burrs on the feed guide?NO: Correct the fault. If the fault cannot be corrected, replace the faultypart.Photosensitive drum6) Does the fault occur at intervals of about 97 mm?YES: Check the ends of the drum (area in contact with developing rolls)for a scratch and foreign matter.Developing assembly, Drum unit7) Does the fault occur at intervals of about 50 mm?YES: Check the developing assembly, and mount it correctly. If the faultcannot be corrected, replace the developing assembly.NO: Replace the drum unit.
