Canon DR-4080U - Manual (Page 40)

38
Cleaning the scanner
Follow the procedures below to clean outside and inside the scanner.
Cleaning the scanner exterior
Clean the surfaces of the scanner at least once a month.
1
Switch the scanner off and discon-
nect the power plug from the power
source.
2
Use a soft cloth to wipe the sur-
faces of the scanner.
Note: The ADF feed and output slots get
dirty easily so take special care when
cleaning these areas.
3
Use a brush to clean dust away
from the ventilation port.
Cleaning the scanner interior
Clean inside the scanner at least once a month with heavy use, or after 120,000 sheets have been scanned.
• To prevent paper jams and double-feeds, or if you are experiencing these problems, clean the rollers, document
sensor, double-feed detection sensor, and paper detection sensor.
If the problem persists after cleaning, purchase a Exchange Roller Kit (sold separately) and replace the feed
rollers, separation rollers, and retard rollers.
• If you see black or white streaks in your scanned images, clean all the parts in the scanning area, including the CIS
glass, white plate, and white sensor roller.
• If you see black dots or white patches in your scanned image, clean the document glass and cover sheet under the
document cover (
➞
45).
All of these cleaning procedures are described below.
Cleaning the paper feed rollers
1
Switch the scanner off and discon-
nect the scanner power plug from
the power source.
2
Pull out the ADF door release under
the hopper and open the ADF door
completely.
Power switch
O : Off
ADF door
ADF door release
(inside the ADF door)