Image Reading System: Foggy Background Or Rough Image - Konica Minolta bizhub 160f Service Manual

Field Service Ver. 1.0 Apr. 2005
22.4.3

Image Reading System: Foggy Background or Rough Image

A. 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?
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 connec-
tors correctly plugged in, and are no cables
broken?
Confidential – for internal use only, do not distribute
<Sample of Image Quality Problem>
Check
22. Image quality problem
4011T004AA
Result Action
YES Protect the copier from extraneous
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 it.
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.
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