The Output Has White Strips - Canon iR1600 Service Manual

CHAPTER 13 TROUBLESHOOTING
3.3.12 The output has white strips. (cross-feeding direction)
Paper
1) Try paper fresh out of package. Is the problem corrected?
YES: 1. The paper may be moist. Advise the user on the correct method
Machine state
2) Execute 'PRINT'. Is the output image normal? (See 5.5.5 of Chap-
YES: Go to step 5.
Developing assembly
3) Is there a scratch on the surface of the developing assembly?
YES: Replace the developing assembly.
Drum unit
4) Is there a scratch in the surface of the photosensitive drum?
YES: Clean the drum. If the fault is not corrected, replace the drum unit.
Contact sensor
5) Clean the rod lens array of the contact sensor. Is the fault cor-
YES: End.
Gain auto adjustment
6) Execute gain auto adjustment. Is the fault corrected? (See 2.3.2 of
YES: End.
CS unit
7) Are the CS unit and the spacers mounted correctly? Also, are the
YES: Replace the contact sensor.
NO:
13-28
of storing paper.
2. Advise the user that the use of paper not of a recommended type
may not bring the best results.
ter 13.)
rected?
Chapter 13.)
spacers free of wear?
Correct the fault. If the fault cannot be corrected, replace the faulty
part.
COPYRIGHT© 2002 CANON INC. 2000 CANON iR1600/iR2000 REV.1 JAN. 2002