Canon DR-4010C User Manual page 68

Chapter 4 Maintenance
3
Use a clean dry cloth to wipe dirt off the sensor glass.
Wipe both the top and bottom sensor glasses.
IMPORTANT
Scratches on the sensor glass may cause marks on the images and could cause feeding
errors. If there are scratches on the sensor glass, contact your local authorized Canon dealer
or service representative.
4
Dampen a cloth with water, wring it out thoroughly, and then wipe the rollers of the upper unit
while turning them.
Do not try to turn the rollers in the lower part of the scanner. Clean these rollers simply by
wiping the exposed part.
IMPORTANT
• Do not use detergent to clean the rollers, since any detergent remaining on the rollers could
cause a feeding error.
• Do not try to turn the rollers in the lower part of the scanner. Turning these rollers by force
may damage them and lead to feeding errors.
5
Remove the roller unit and the retard roller.
"Removing the Retard Roller," on p.
Clean while turning
Clean only
exposed part
(See "Removing the Roller Unit," on p.
4-11.)
4-3
4-9, and