Image Reading System: Foggy Background Or Rough Image - Konica Minolta Di1610 Service Manual

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Image reading system: Foggy background or rough image

<Troubleshooting Procedures>
Step
1 Does sunlight or any other extraneous
light enter the machine?
2 Is the document damaged or dirty?
3 Is the Original Pad dirty?
4 Does the Original Cover not lie flat?
5 Is the surface of the Original Glass dirty? YES Clean it.
6 Are the Shading Sheet or back surface
of the Original Glass dirty?
7 Are the mirror or lens dirty?
8 Is the Exposure Lamp dirty?
9 Are there no bent connector pins on the
cables connecting the control boards,
are all connectors correctly plugged in,
and are no cables broken?
<Sample of Image Quality Problem>
4011T004AA
Check
T-28
Result
YES Protect the copier from extrane-
ous light.
YES Replace the document.
YES Clean it.
YES If the Original Cover is deformed
or the hinges are damaged,
replace the Original Cover.
YES Clean them.
YES Clean them.
Replace the Scanner Assy.
YES Clean it.
Replace the Scanner.
NO Correctly plug in the connectors.
Replace connection cables.
Action