HP Scanjet 4570c and 5500c scanner - (English) Glass Cleaning Manual
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.... Do not spray the glass cleaner directly on the glass. If the cleaner gets in the calibration strip area, the scanner must be sent to hp for 15 minutes, you can damage the scanner glass. Scanner lid being removed 4 Set the lid aside. Avoid abrasives, acetone, benzene, and carbon tetrachloride...has cooled for repair. 5 Apply glass cleaner to a separate cloth and clean the glass. Clean top of the scanner Clean the outside of internal parts. Avoid isopropyl alcohol because it could stain the calibration strip ( the white strip under the glass) and render your scanner useless.
.... Do not spray the glass cleaner directly on the glass. If the cleaner gets in the calibration strip area, the scanner must be sent to hp for 15 minutes, you can damage the scanner glass. Scanner lid being removed 4 Set the lid aside. Avoid abrasives, acetone, benzene, and carbon tetrachloride...has cooled for repair. 5 Apply glass cleaner to a separate cloth and clean the glass. Clean top of the scanner Clean the outside of internal parts. Avoid isopropyl alcohol because it could stain the calibration strip ( the white strip under the glass) and render your scanner useless.