Fujitsu Ricoh Fujitsu N7100E Network Image Scanner - Manual (Page 341)

6.3 Cleaning Inside the Scanner
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4. Clean the following parts with a soft cloth slightly moistened with
Cleaner F1 or with the Cleaning Wipe.
 Brake roller (×2)
Remove the brake rollers from the scanner to clean.
For details on how to remove the brake rollers, refer to
"6.5.3 Replacing the Roller
Set" (page 348) .
Gently wipe the dirt and dust off from along the slots on the surface of the brake
rollers. Take care not to damage the soft rubber.
Brake roller (×2)
Idler roller (×4)
Eject roller (×2)
Feed roller (×2)
Glass (×2)
(Also on the ADF paper chute)
Pick roller (×2)
Ultrasonic sensor (×2)
(Also on the ADF paper chute)