Canon IR2800, IR3300, IR2200 Troubleshooting Image Faults, Copy is too light halftone area only

CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS

3 Troubleshooting Image Faults

3.1The 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:

Decrease the setting of the following in service mode: COPIER>ADJUST>AE>AE-TBL.

Developing assembly

3)Are the block members of the developing assembly in contact with the photosensitive drum?

NO: Check the developing assembly locking lever. Check the surface of the developing assembly block members for foreign matter (toner).

Developing assembly

4)Is the coating on the developing cylinder even? NO: Check the developing assembly.

Scanner, Photosensitive drum

5)Clean the mirrors and lenses. Is the problem corrected? YES: End.

NO: Replace the drum unit.

COPYRIGHT © 2001 CANON INC. CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001 4-7 T