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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
fi
rmly 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
fi
ngers caught in the cover.
• Do not use a commercial cleaner for of
fi
ce 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.
