7-68 COPYRIGHT © 2001 CANON INC. CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS5 The copy has fogging.Perform the Image Adjustment Basic Procedure.6 The copy has vertical streaks/vertical lines.CausePrimary chargingassemblycleanerPrimary chargingwire, Pre-primarycharging wireGrid platePhotosensitivedrumStep12345ChecksGenerate a halftone test print(PGTYPE=5). Are vertical streaks/vertical lines noted?If the problem is noted in all colors,go to step 13.If the problem is noted in a specificcolor, go to the next step.Does the cleaner of the primarycharging assembly stop in themiddle?Clean the primary charging wire andthe pre-primary charging wire. Is theproblem corrected?Are there scratches or dirt on the gridplate?Are there scratches in the peripheraldirection of the photosensitive drum?Yes/NoNONOYESYESYESActionGo to step 16.Check the motor of thecleaner.End.Replace the grid plate.Replace the photosensi-tive drum. If scratches arefound, remove the cause.Further, keep in mind thatscratches on the photo-sensitive drum candamage the cleaningblade; if such is the case,replace the cleaningblade also.
