The Copy Is Foggy. (Cross-Feeding Direction) - Canon iR1600 Service Manual

3.3.19 The copy is foggy. (cross-feeding direction)

Machine state
1) Make a copy in Direct. Does the fault occur in the same location?
YES: Go to step 3.
Wiring
2) Is the wiring of the CS unit, original detection/reader motor drive
NO:
Photosensitive drum
3) Does the fault occur at intervals of about 97 mm?
YES: Check the drum unit, and mount it correctly. If the fault is not cor-
Developing assembly, Drum unit
4) Does the fault occur at intervals of about 50 mm?
YES: Check the developing assembly, and mount it correctly. If the prob-
Reader unit, Feeding system
5) Make a reduced copy (about 50% to 60%), and compare it against
YES: Check the rear unit.
NO:
COPYRIGHT© 2002 CANON INC.
PCB, and image processor PCB normal?
Correct the wiring.
rected, replace the drum unit.
lem is not corrected, replace the developing assembly.
a copy made in Direct. Is the location of the fault different?
Check the feeding system.
2000 CANON iR1600/iR2000 REV.1 JAN. 2002
CHAPTER 13 TROUBLESHOOTING
13-33