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4.6 Cleaning the Image Sensors
(Transparent Contact Plates)
The scanner’s image quality drops when the transparent contact 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 4.1, “Opening and Closing the Top Cover”.
(3) As shown below, wipe off any soiled areas on the transparent contact plates using a soft
cloth that has been moistened with water or a neutral detergent (diluted with water) and
firmly wrung out.
Transparent contact plates
(4) Wipe the transparent contact plates once again using a soft, dry cloth to remove all the
moisture.
(5) Close the top cover as described in Section 4.1, “Opening and Closing the Top Cover”.
Caution
• 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
transparent contact plate 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 the transparent contact plate or other reasons,
please perform the calibration procedure (see Section 4.7, “Scanner
Calibration”). If the scanning results do not improve after calibration, the
transparent contact plate(s) will need to be replaced.
