Image Reading System: Black Streaks Or Bands - Konica Minolta PagePro 1380 MF Service Manual

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Image reading system: Black streaks or bands

<Troubleshooting Procedure>
Step
1 Is the document damaged or dirty?
2 Is the Original Pad dirty?
3 Does the Original Cover lie flat?
4 Is the surface of the Original Glass dirty? YES Clean it.
5 Is the Shading Sheet or back surface of
the Original Glass dirty?
6 Is the mirror or lens dirty?
7 Is the Exposure Lamp dirty?
8 Are there any bent connector pins on the
cables connecting the control boards,
are any connectors incorrectly plugged
in, or are any cables broken?
<Typical Faulty Image>
4011T017AA
Check
T-27
4011T023AA
Result Action
YES Replace the document.
YES Clean it.
NO If the Document Cover is
deformed or the hinges are dam-
aged, replace the Document
Cover.
YES Clean them.
YES Clean them.
Replace the Scanner Unit.
YES Clean it.
Replace the Scanner Unit.
YES Correctly plug in the connectors.
Replace the connection cables.