Image Reading Section: Black Streaks Or Bands - Konica Minolta Bizhub 162 Service Manual

Field Service Ver. 1.0 Apr. 2005
17.2.5

Image Reading Section: Black streaks or bands

A. Typical Faulty Images
B. Troubleshooting Procedure
Step
1 Original Glass is dirty, scratchy, worn, or damaged.
Shading sheet reading portion (the portion on the back-
2 side of the Original Glass to which Original Width Scale is
affixed) is dirty.
3 Scanner mirrors are dirty, scratchy, or damaged.
4 Exposure Lamp (LA2) is dirty.
CCD Unit lens and CCD surface are dirty or scratchy.
5 <Check Procedure>
Remove lens cover to check for possible contamination.
6 CCD Board (PWB-J) connector is loose.
7 Control Board (PWB-C/C) connector is loose.
4011T017AA
Check
17. Image quality problem
4011T023AA
Result Action
YES • Clean or change.
YES • Clean.
YES • Clean or change.
YES • Clean or change.
YES • Clean or change.
YES • Reconnect.
YES • Reconnect.
• Change CCD Unit.
NO • Change Control Board
(PWB-C/C).
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