Fujitsu fi-8190 Operator's Manual page 223

3
Clean the following locations with a cloth moistened with Cleaner F1, or a sheet of Cleaning Wipe.
No. Location
1 Brake roller (× 2)
2 Ultrasonic sensor (× 2)
3 Document sensor (× 8) [fi-8190/fi-8290/fi-8170/fi-8270]
223
Daily Care