The Output Has Horizontal Fogging; The Output Has Poor Sharpness - Canon iR105 Service Manual

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CHAPTER 6 TROUBLESHOOTING

3.3.19 The output has horizontal fogging

1) Does the problem occur at the same location on copies made in Di-

YES: Go to step 3.

Scanning lamp, Lamp regulator

2) Does the scanning lamp flicker when the scanner is moving for-

YES: Check the scanning lamp and the lamp regulator.

Scanner (wobbling), Feeding system (wobbling)

3) Make a reduced copy, and compare it against a Direct copy. Are the

YES: Check the feeding system.

4) Does the problem occur at intervals of about 79 mm?

YES: If the dirt is in the form of dots, dry wipe the surface of the devel-

Copyboard glass

1) Is there adhesion of oil or the like on the copyboard glass?

YES: Clean the copyboard glass.

Mirror (position)

2) Is the horizontal reproduction ratio of Direct copies as indicated?

Scanner (Dirt)

3) Clean the scanning lamp, reflecting plate, mirrors, lens, and dust-

Photosensitive Drum, Lens drive assembly

4) Try replacing the photosensitive drum. Is the problem corrected?

locations of the problem different?

Check the scanner system.

oping cylinder. If it is spread, go to 1.1.3 (checks on printer side 2/

2; F06-101-03).

Adjust the distance between NO. 1 mirror and NO. 2 mirror.

proofing glass. Is the problem corrected?

2000 2000 2000 2000

CANON iR105 REV.0 JULY 2001

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