HP 7400C HP Scanjet 7400C Series Scanner Windows - (English) User Manual - Page 99

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Back to TOC Periodically, the scanner and accessories might need to be cleaned or to have maintenance, especially if you are seeing marks or smudges on scanned images. You might need to clean the scanner glass if the ink on items you are scanning can be smudged with your hand or items have excessive amounts of dust or dirt on them. You might also need to clean these parts if there are smudges or other marks on scanned images. Troubleshooting usage and maintaining 99 1 Disconnect the power cable from the scanner. 2 Open the scanner lid. 3 Clean the glass using a soft, lint-free cloth sprayed with a mild glass cleaner. CAUTION Only use 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. 4 Dry the scanner glass with a dry, soft, lint-free cloth. 5 When finished, reconnect the power cable to the scanner. Fingerprints or smudges on the underside of the glass do not affect the appearance of scanned images because this area of the glass is outside the focal point of the scanner.

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Back to TOC
Troubleshooting usage and maintaining
99
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Periodically, the scanner and accessories might need to be cleaned or
to have maintenance, especially if you are seeing marks or smudges
on scanned images.
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You might need to clean the scanner glass if the ink on items you are
scanning can be smudged with your hand or items have excessive
amounts of dust or dirt on them. You might also need to clean these
parts if there are smudges or other marks on scanned images.
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1
Disconnect the power cable from the scanner.
2
Open the scanner lid.
3
Clean the glass using a soft, lint-free cloth sprayed with a mild
glass cleaner.
CAUTION
Only use 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.
4
Dry the scanner glass with a dry, soft, lint-free cloth.
5
When finished, reconnect the power cable to the scanner.
Fingerprints or smudges on the underside of the glass do not affect the
appearance of scanned images because this area of the glass is
outside the focal point of the scanner.