Canon DR-4580U Operating manual

Maintenance Guide
Please read these instructions carefully before using this product, and save them for future reference.

41
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: TheADF 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 when heavily used
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.
•Ifyouseeblackorwhitestreaksinyourscannedimages,cleanallthepartsinthescanningarea,includingtheCIS
glass, white plate, and white sensor roller.
•Ifyouseeblackdotsorwhitepatchesinyourscannedimage,cleanthedocumentglassandcoversheetunderthe
document cover (➞48).
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)

42
3
Soak a clean cloth in a weak solu-
tion of water and mild detergent
then wring the cloth out tightly. Use
the cloth to wipe the surfaces of the
rollers.
Hold a roller in place to prevent it from
rotating during cleaning and wipe it in
the direction recommended in the illus-
tration.
Caution! To prevent the rollers from
moving out of position, you must wipe
them clean in the direction recom-
mended in the illustration. The retard
roller especially must be wiped in one
direction to prevent it from moving out
of position.
Cleaning the scanner
Rollers to be cleaned are shaded
Retard roller
Wipe side to side to clean all rollers other than the
retard roller (see above)
Wipe in the direction of the arrow
Transport rollers
Feed rollers Rollers
Separation roller

43
4
With both hands on either side of
the ADF door, slowly close it in the
direction of the arrow and press it
down until you hear it lock in place.
When closing the ADF door, press down
evenly on both sides to ensure that it
latches shut correctly.
5
Open the ADF.
➀Pull out the exit document stop-
per in the direction of the arrow.
➁Below the hopper pull out the
Front door release.The ADF and
document cover separate.
➂Raise the ADF and open it com-
pletely.
6
Soak a clean cloth in a weak solu-
tion of water and mild detergent
then wring the cloth out tightly. Use
the cloth to wipe the surfaces of the
rollers.
Hold a roller in place to prevent it from
rotating during cleaning and wipe it in
the direction recommended in the illus-
tration.
Caution!If the sensor roller comes loose
during cleaning, reattach it after clean-
ing is completed. (➞49)
Cleaning the scanner
ADF door
ADF
Document cover
Exit document stopper
Front door release
Hopper
Transport roller
sensor roller
Wipe side to side to clean
Rollers

44
7
Close the ADF.
With your hands on both sides of the
ADF, press down slowly and gently with
even pressure on both sides until you
hear it lock in place.
Caution!To avoid damaging the hopper
extension tray, never press down on the
hopper extension tray to close the ADF.
Cleaning the scanning path
Cleaning the scanning glass, the CIS glass, the white plate, the sensor roller, the document sensor, the
double-feed detection sensor, and the paper detection sensor.
1
Switch the scanner off and discon-
nect the scanner power cord from
the power source.
2
Pull out the ADF door release and
open the ADF door.
Cleaning the scanner
ADF
Hopper extension tray
ADF door release
(inside the ADF door)
ADF door

45
3
Use the blower brush provided with
the scanner to clean the document
sensors, the double-feed detection
sensors, and paper detection
sensor.
Cleaning the scanner
Paper detection sensor
Double-feed detection sensor
Document sensors
Double-feed detection sensor
To clean the document, double-feed, and paper de-
tection sensors, remove the brush from the blower
and blow out the dirt through the holes
Blower

46
4
Close the ADF door.
With your hands on both sides of the
ADF, press down slowly and gently with
even pressure on both sides until you
hear it lock in place.
When closing the ADF door, press down
evenly on both sides to ensure that it
latches shut correctly.
5
Open the ADF.
➀Pull out the exit document stop-
per in the direction of the arrow.
➁Below the hopper pull out the
Front door release.The ADF and
document cover separate.
➂Raise the ADF and open it com-
pletely.
Cleaning the scanner
ADF
Document cover
Exit document stopper
Front door release
ADF door

47
6
Soak a clean cloth in a weak solu-
tion of water and mild detergent
then wring the cloth out tightly. Use
the cloth to clean the following:
•Scanning section glass
•CIS glass
•White plate
•sensor roller
Use the blower to clean the document
sensors.
Refer to the illustration for the locations
of these parts.
Caution!If the sensor roller comes loose
during cleaning, reattach it after clean-
ing is completed. (➞49)
7
Close the ADF.
With your hands on both sides of the
ADF, press down slowly and gently with
even pressure on both sides until you
hear it lock in place.
Caution!To avoid damaging the hopper
extension tray, never press down on the
hopper extension tray to close the ADF.
Cleaning the scanner
Document sensors
To clean the documentsensor,removethebrush from
the blower and blow out the dirt through the hole.
CIS glass
White plate
Scanning
section glass
sensor roller
Blower
Document sensor

48
Cleaning the cover sheet and document glass
1
Open the document cover.
2
Soak a clean cloth in a weak solu-
tion of water and mild detergent
then wring the cloth out tightly. Use
the cloth to clean the document
glass and the cover sheet.
3
Slowly close the document cover.
Document cover
Document glass
Cover sheet
Cleaning the scanner

49
Attaching the sensor roller
If the sensor roller comes loose while cleaning, reattach it as explained below.
1
Point the gear end of the roller shaft
to the left side of the scanner.
2
Insert the bushings on both ends of
the shaft into the guide grooves,
matching the flat sides of the bush-
ings with the flat sides of the of the
guide grooves.
3
After reattaching the sensor roller,
press it lightly with your finger and
confirm that it easily moves up and
down.
Cleaning the scanner
Left Side Gear Bushing
sensor roller
Guide groove
Flat side of bushing
Attach the right side in the same way.