Canon DR-2050SP - Manual (Page 66)

60 Appendices
5.
Rotate the rollers (a) and (b) as you clean them. Moisten a cloth with plain
water, wring out excess water, wipe the rollers and then dry it with a clean dry
cloth.
6.
Remove the feed roller and retard roller. (See p. 66, p. 69.)
IMPORTANT
After removing the feed roller and retard roller, clean them and then return
them to the scanner.
7.
Wipe the removed rollers with a firmly wrung cloth moistened with water.
8.
Attach the rollers that were removed. (See p. 67, p. 70.)
9.
Gently press the left and right sides of the top of the front unit. Return the unit
fully to its original position until you hear it click into place.
Feed Roller
Retard Roller