Ricoh FAX180 Service Manual page 108

August 7th, 1995
6.1.3. Dirty Background
Possible Cause (Scanner)
•
Scanner shading correction error or wrong threshold.
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.)
COPY QUALITY TROUBLESHOOTING
H516T507.wmf
6-3
TROUBLESHOOTING
H516T512.wmf