Field Service Ver. 1.0 Aug. 2007
17.2.4
Scanner system: Black streaks or bands
A. Typical faulty images
B. Troubleshooting procedure
Step
Section
1
Original
Original is damaged or dirty.
Shading
2
Shading sheet is dirty.
sheet
Mirrors/Lens/
3
Mirrors, lens and/or original glass are dirty.
Original glass
4
Scanner unit
Exposure lamp is dirty.
PWBs and
Connectors are securely connected with no
5
connection
bent pins and no breaks in the connection
cables
cables.
Connectors on the image processing board
6
are connected properly.
Image pro-
cessing board
The problem has been eliminated after per-
7
forming step 6.
4036fs4023c0
Check Item
17. Miscellaneous errors
4036fs4024c0
Result
Action
YES Change original.
YES Clean.
YES Clean.
Clean.
YES
Change scanner unit.
Reconnect.
NO
Replace the connection
cable.
NO
Reconnect.
Change image processing
NO
board.
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