Fujitsu ScanSnap N1800 Operator's Manual page 363

Feed rollers (× 2) and eject rollers (× 2)
When cleaning, turn on the power and let the feed rollers and eject rollers rotate.
1 On the [Main Menu] or [Job Menu] window, press the [Maintenance] button.
HINT
The [Maintenance] button on the [Job Menu] window can be shown by pressing
.
The [Maintenance] window appears.
2 Press the [Roller Cleaning] button.
7.3 Cleaning Inside the Scanner
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