Field Service Ver. 1.0 Apr. 2005
22.4.5
Image Reading System: Black Spots
A. Troubleshooting Procedures
Step
1
Is the document damaged or dirty?
2
Is the Original Pad dirty?
3
Is the Original Glass dirty?
4
The problem has been eliminated after per-
forming step 3.
Confidential – for internal use only, do not distribute
<Sample of Image Quality Problem>
Check
22. Image quality problem
4011T521AA
Result
Action
YES
Replace the document.
YES
Clean it.
YES
Clean it.
NO
Replace the Scanner Assy.
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