Troubleshooting Image Faults; The Output Is Too Light (Halftone Area) - Canon iR105 Service Manual

3.3 Troubleshooting Image Faults

3.3.1 The output is too light (halftone area)

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1) Perform the Image Adjustment Basic Procedure. Is the problem
YES: End.
Scanner (dirt)
2) Does the problem occur only in copy images?
YES: The cause is between scanner and CCD. Perform the following
AE adjustment
3) Make copies in AE mode. Is the density normal?
YES: End.
Developing assembly
4) Are the rolls of the developing assembly in firm contact with the
NO:
YES: Check to see if the coating of toner on the developing cylinder is
Image processing
5) Is the setting of the following in service mode too low:
YES: Set it to '5'.
6) Check to see if the slide switch (SW101) of the HV-DC PCB is in UP
COPYRIGHT© 2001 CANON INC.
corrected?
once again:
[1] Check the standard white plate for dirt.
[2] Execute the following in service mode:
COPIER>FUNCTION>CDD>CCD-ADJ.
drum?
Check the mounting of the developing assembly locking mecha-
nism.
even.
COPIER>ADJUST>DENS>DEN>ADJ?
position.
2000 2000 2000 2000
CHAPTER 6 TROUBLESHOOTING
CANON iR105 REV.0 JULY 2001
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