The Copy Is Too Light (Halftone Area Only); Troubleshooting Image Faults - Canon iR2200 Service Handbook

3 Troubleshooting Image Faults

3.1 The copy is too light (halftone area only).

1) Perform the Image Adjustment Basic Procedure. Is the problem cor-
rected?
Check to make sure that the placement of the pattern print when the follow-
ing is executed in service mode is correct: FUNCTION>DENS>PD-ME.
YES: End.
AE adjustment
2) Make copies in AE mode. Is the text too light?
YES: Execute AE adjustment:
Developing assembly
3) Are the block members of the developing assembly in contact with the
photosensitive drum?
NO:
Developing assembly
4) Is the coating on the developing cylinder even?
NO:
Scanner, Photosensitive drum
5) Clean the mirrors and lenses. Is the problem corrected?
YES: End.
NO:
CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
Decrease the setting of the following in service mode:
COPIER>ADJUST>AE>AE-TBL.
Check the developing assembly locking lever. Check the surface of
the developing assembly block members for foreign matter (toner).
Check the developing assembly.
Replace the drum unit.
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