Troubleshooting Faulty Images; The Copy Is Too Light (Halftone Area) - Canon iR8500 Servise Manual

3.3 Troubleshooting Faulty Images

3.3.1 The copy is too light (halftone area)

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1) Perform the Image adjustment Basic Procedure. Is the problem cor-
YES: End.
Scanner (soiling)
2) Does the problem occur only in copy images?
YES: The cause is between the scanner and the CCD. Perform the fol-
AE adjustment
3) Make copies in AE mode. Is the density normal?
YES: End.
Developing assembly
4) Are the support members of the developing assembly in firm con-
NO:
YES: Check to make sure that the coating of toner on the developing cyl-
Image processing
5) Is the setting of the following in service mode too low:
YES: Set it to '5'.
COPYRIGHT© 2001 CANON INC.
rected?
lowing once again:
1. Check the standard white plate for dirt.
2. Execute the following in service mode:
COPIER>FUNCTION>CCD>CCD-ADJ.
tact with the drum?
Check how the developing assembly is locked in position.
inder is even.
COPIER>ADJUST>DENS>DEN-ADJ?
2000 2000 2000 2000
CHAPTER 6 TROUBLESHOOTING
CANON iR8500 REV.0 MAR. 2001
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