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TROUBLESHOOTING
COPY QUALITY TROUBLESHOOTING
6.1.10. White Spots in Black Image Areas
Possible Cause (Scanner)
•
Dust on the exposure glass.
•
Scanner shading correction error or wrong threshold.
•
The FCU is defective.
Action:
1. Clean the exposure glass of the image sensor.
2. Adjust the scanner contrast threshold settings using Function 10-2.
(See section 4.1.15)
3. Replace the FCU.
6-10
August 7th, 1995
H516T501.wmf
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