HP Scanjet 7800 Document Sheet-feed Scanner - Manual (Page 22)

Note If you do not have an HP paper-path cleaning cloth, use a lint-free
cloth that has been dampened with isopropyl alcohol.
4. Wipe the area around the small rubber pad to remove any paper dust.
5. Raise the feed-roller assembly cover to close it.
6. Close the scanner hatch.
Note HP recommends that you replace the feed-roller assembly every 100,000
scans. Use the HP Button Settings Utility to keep track of the scan count. For
more information, see the General info tab in the Button Settings Utility.
Chapter 4
20 HP Scanjet 7800 Scanner