SK200-UM-251 - Graphtec

5. DAILY MAINTENANCE5.4 Cleaning the Image Sensors (Contact glass plates)The scanner’s image quality drops when the contact glass plates over the image sensors become dirty, soclean 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 beenmoistened with water or a neutral detergent (diluted with water) and firmly wrung out.Contact glass plates(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”.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 solutionscontaining alcohol. Moreover, although the contact glass plates is not a maintenance part that requires periodicreplacement, it is a consumable part because its surface may receive slight scratches due to minute particles ofdust and other foreign matter. If document scanning produces unsatisfactory results (unexpected white or blackstreaks in the data) due to scratches on one or more of the contact glass plates or other reasons, please performthe calibration procedure (see Section 5.7, “Scanner Calibration”). If the scanning results do not improve aftercalibration, the contact glass plate(s) will need to be replaced.SK200-UM-251-9370 5-4