SK200-UM-251-9370 5-4
5. DAILY MAINTENANCE
5.4 Cleaning the Image Sensors (Contact glass plates)
The scanner’s image quality drops when the contact glass plates over the image sensors become dirty, so
clean the image sensors whenever necessary.
(1) Turn off the scanner.
(2) Open the top cover as described in Section 5.1, “Opening and Closing the Top Cover”.
(3) As shown below, wipe off any soiled areas on the contact glass plates using a soft cloth that has been
moistened with water or a neutral detergent (diluted with water) and firmly wrung out.
(4) Wipe the contact glass plates once again using a soft, dry cloth to remove all the moisture.
(5) Close the top cover as described in Section 5.1, “Opening and Closing the Top Cover”.
• Take care not to get your fingers caught in the cover.
• Do not use a commercial cleaner for office equipment, a glass cleaner, or chemical solvents such as solutions
containing alcohol. Moreover, although the contact glass plates is not a maintenance part that requires periodic
replacement, it is a consumable part because its surface may receive slight scratches due to minute particles of
dust and other foreign matter. If document scanning produces unsatisfactory results (unexpected white or black
streaks in the data) due to scratches on one or more of the contact glass plates or other reasons, please perform
the calibration procedure (see Section 5.7, “Scanner Calibration”). If the scanning results do not improve after
calibration, the contact glass plate(s) will need to be replaced.