Use only glass cleaner. Avoid abrasives, acetone, benzene, and carbon tetrachloride, all of which can damage the scanner glass. Avoid isopropyl alcohol because it can leave streaks on the glass.
Do not spray the glass cleaner directly on the glass and do not allow the cleaner to seep between the glass and the plastic. If liquid gets between the glass and the plastic it could stain the calibration strip (marked) and render the scanner useless.
Dust will immediately begin accumulating in your scanner now that the top cover is off. Minimize the time the scanner base is exposed.
Beware of static discharge from your fingers, hand, or tools that can damage the circuit boards inside the scanner.
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