Canon iR1600 Series, Service Manual

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CHAPTER 13 TROUBLESHOOTING
COPYRIGHT© 2002 CANON INC. 2000 CANON iR1600/iR2000/iR1610/iR2010 SERIES REV.0 MAR. 2002
13-27
3.3.6 The copy is foggy. (entire copy)
Image density
1) Is the image density setting appropriate?
NO: Correct the image density setting.
Machine state
2) Execute ‘PRINT’. Is the output image normal? (See 5.5.5 of Chap-
ter 13.)
YES: Go to step 5.
Developing assembly
3) Is the developing assembly locked to the photosensitive drum
firmly? (Check to see if the rolls of the developing assembly are
firmly in contact.)
NO: Mount the developing assembly correctly.
Drum unit, Developing assembly
4) Is the drum grounding shaft of the drum unit free of dirt and de-
formation?
YES: Correct the fault. If the fault cannot be corrected, replace the
drum unit.
NO: Replace the developing assembly.
Contact sensor (rod lens array)
5) Clean the rod les 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 an the spacers mounted correctly? Also, are the
spacers free of wear?
YES: Replace the contact sensor.
NO:
Correct the fault. If the correction is not possible, replace the
faulty part.