Canon imageRUNNER C3489 Reference Manual page 389

CAUTION
When closing the feeder cover, be careful not to get your fingers caught,
as this may result in personal injury.
8
Lift the feeder.
9
Clean the feeder scanning area with a cloth dampened with
water. Then, wipe the area with a soft, dry cloth.
10
Clean the part located next to the rubber roller with a cloth
dampened with water. Then, wipe the area with a soft, dry
cloth.
7-59
Routine Cleaning
7