The Output Has Black Lines (Vertical, Fine) - Canon iR105 Service Manual

3.3.9 The output has black lines (vertical, fine)

Scanner (dirt)
1) Does the problem occur only in copy images?
YES: The cause is between scanner and CCD. Perform the following:
Fixing system
2) Using the door switch actuator, make a copy with the front cover
YES: The cause is after the fixing system. Perform the following:
Primary charging assembly (dirt)
3) Clean the primary charging assembly. Is the problem cord?
YES: End.
Photosensitive drum cleaner assembly
4) Is foreign matter (e.g., paper) trapped by the cleaning blade of the
YES: Remove the foreign matter, and clean the cleaning blade and the
5) Is there a scratch on the edge of the cleaner blade? (Put a finger on
YES: Turn over the edge. If both edges have a scratch, replace the clean-
Photosensitive drum, Developing assembly
6) Is there a scratch or black line in the peripheral direction of the
YES: Replace the photosensitive drum. If a scratch is found, be sure to
NO:
COPYRIGHT© 2001 CANON INC.
[1] Check the standard white plate and the mirrors for dirt.
[2] Execute the following in service mode:
COPIER>FUNCTION>CCD>CCD-ADJ.
open. Turn off the power switch when the copy paper is in the feed-
ing assembly, and check the image. Is the copy image normal?
[1] Check the fixing upper roller for scratches and black lines.
[2] Check the web for dirt.
[3] Check the thermistor and the separation claw for dirt. Check
the reciprocating movement.
cleaner unit?
outside of the cleaner unit.
the edge of the cleaning blade, and feel for a scratch.)
ing blade.
surface of the photosensitive drum?
find out its cause.
Check the developing system.
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CHAPTER 6 TROUBLESHOOTING
CANON iR105 REV.0 JULY 2001
6-77