16. Image quality problem
Field Service Ver. 1.0 Apr. 2007
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T
roubleshooting
16.2.7
Image reading section: White streaks or bands
A. Typical faulty images
B. Troubleshooting procedure
A09AF3C528DA
White streaks
White bands
Step
Check
Result
Action
1
Original glass is dirty, scratchy, worn, or damaged.
YES
• Clean or change.
2
Shading sheet reading portion (the portion on the back-
side of the original glass to which original width scale is
affixed) is dirty.
YES
• Clean.
3
Scanner mirrors are dirty, scratchy, or damaged.
YES
• Clean or change.
4
CCD unit lens and CCD surface are dirty or scratchy.
<Check procedure>
Remove lens cover to check for possible contamination.
YES
• Clean or change.
5
CCD board (CCDB) connector is loose.
YES
• Reconnect.
6
MFP board (MFPB) connector is loose.
YES
• Reconnect.
NO
• Change CCD unit.
• Change MFP board
(MFPB).
Содержание bizhub 163
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