Sharp MX-2300N User Manual page 828

Scanning area
If colored lines or white lines appear in images scanned using the automatic document feeder, clean the scanning area
(the thin long glass next to the document glass).
To clean this area, use the glass cleaner that is stored in the automatic document feeder. After using the glass cleaner,
be sure to return it to its storage position.
MX-3501N/4501N
(1) Open the automatic document feeder and remove the glass cleaner.
(2) Clean the scanning areas with the glass cleaner.
One scanning area is the document glass and the other is inside the automatic document feeder.
Document glass
Automatic document feeder
Open the scanning area cover on the automatic document feeder. Push in the release switch to release the cover.
Examples of lines in the image
Black lines White lines
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