CHAPTER 13 TROUBLESHOOTING
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©
2002 CANON INC. 2000 CANON iR1600/iR2000 REV.1 JAN. 2002
13-26
3.3.7 The copy is foggy. (feeding direction).
3.3.8 The copy has black lines. (feeding direction, fuzzy, thick)
3.3.9 The copy has black lines. (feeding direction, fine)
Machine state
1) Execute ‘PRINT’. Is the output image normal? (See 5.5.5 of Chap-
ter 13.)
YES: Go to step 5.
Developing assembly
2) Is the coating of toner on the developing cylinder even?
NO: Rotate the developing assembly cylinder to see if the coating be-
comes even. If not, replace the developing assembly.
Drum unit
3) Is there a scratch or black line in the peripheral direction of the
surface of the photosensitive drum?
YES: Replace the drum unit.
Fixing assembly
4) Execute fixing roller cleaning in user mode. Is the fault corrected?
YES: End.
NO: Replace the fixing assembly.
Contact sensor (rod lens array)
5) Clean the rod lens array of the contact sensor. Is the fault cor-
rected?
YES: End.
Gain auto adjustment
6) Execute gain auto adjustment. Is the fault corrected? (See 2.3.2 of
Chapter 13.)
YES: End.
CS unit
7) Are the CS unit and the spacers mounted correctly? Also, are the
spacers free of wear?
YES: Replace the contact sensor.
NO: Correct the fault. If the fault cannot be corrected, replace the faulty
part.
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