Canon DADF-M1 Service Manual page 130

Chapter 4
3) When done, mount back the inside cover.
6. Read Roll and Roll Scraper
1) Remove the lower left cover.
2) Clean the read roll [1] and the roll scraper [2] with lint-free paper moistened with alcohol.
4-12
[2]
[1]
F-4-15
[2]
[1]
F-4-16