HP 3390 Service Manual - Page 78
Cleaning the all-in-one, Cleaning the flatbed scanner glass
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Cleaning the all-in-one NOTE Use a soft, damp, lint-free cloth to wipe dust, smudges, and stains off of the exterior of the all-in-one. Cleaning the flatbed scanner glass Dirty glass, from fingerprints, smudges, hair, and so on, slows down performance and affects the accuracy of special features such as fit-to-page and copy. NOTE If streaks or other defects appear only on copies produced from the ADF, clean the scanner strip (step 3). It is not necessary to clean the flatbed scanner glass. 1. Turn off the all-in-one, unplug the power cord from the electrical outlet, and raise the scanner cover. 2. Clean the glass by using a soft cloth or sponge that has been moistened with nonabrasive glass cleaner. CAUTION Do not use abrasives, acetone, benzene, ammonia, ethyl alcohol, or carbon tetrachloride on any part of the all-in-one; these can damage the all-in-one. Do not place liquids directly on the glass. They might seep under it and damage the all-in-one. Figure 3-32 Cleaning the scanner glass (1 of 2) 56 Chapter 3 Maintenance ENWW