COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON iR8500 REV.0 MAR. 2001CHAPTER 6 TROUBLESHOOTING6-923.3.19 The copy is foggy horizontally----------1) In Direct copy mode, does the problem occur at the same locationat all times?YES: Go to step 3).Scanning lamp, Lamp regulator2) While the scanner is moving forward, does the scanning lampflicker?YES: Check the scanning lamp and the lamp regulator.Scanner (wobbling), Feeding assembly (wobbling)3) Make a reduced copy, and compare it against a Direct copy. Is theproblem at different locations?NO: Check the scanner.YES: Check the feeding system.3.3.20 The copy has poor sharpnessCopyboard glass1) Is there oil or the like on the copyboard glass?YES: Clean the copyboard glass.Mirror (position)2) Is the horizontal reproduction ratio of Direct copies as indicated?NO: Adjust the distance between No. 1 mirror and No. 2 mirror.Scanner (dirt)3) Clean the scanning lamp, reflecting plate, mirror, lens, and dust-proofing glass. Is the problem corrected?YES: End.Photosensitive drum, Lens drive assembly4) Try replacing the photosensitive drum. Is the problem corrected?YES: End.NO: Check the lens drive assembly for movement.
