Canon scanner imageFORMULA CR50 User Manual

41
BWhile lowering the down the OPEN lever, open the reading 
unit.
CRemove the paper that has jammed.If the paper is jammed at the pickup area: Pull the paper forward 
and clear the jam from the Maintenance Cover.If the paper is jammed at any other area: Pull the paper forward 
and clear the jam from the nearest opening.
DGently close the reading unit until it clicks into place. 

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EGently close the Maintenance Cover until it clicks into place.
Check the following conditions, and take the appropriate action.
The power switch is not in the ON position.Turn the switch into the ON position. (See “Turning ON the Power,” 
on p. 22.)
The power cord is not connected into a power outlet.Connect the power cord into a power outlet. (See “Connecting the 
Power Cord,” on p. 22.)
The Scanner Does Not Turn ON 

43
If the document is not fed properly or the detection functions do not 
work properly, remedy the problem by checking the following 
conditions.
Feeding Trouble
Condition A paper jam has occurred.
Cause and 
Remedy Check to make sure that the size and thickness of the 
document are within the supported range of the 
scanner, and if the quality of the paper is appropriate.
For cautions on handling documents, see 
“Documents,” on p. 33.
 Documents with rough surfaces may cause a paper 
feed error to...

44
If there is a problem with the scanned image (the image is not sharp or 
stripes appear), one of the following conditions may be a probable 
cause. Check the following conditions, and take the appropriate action.
The scanning glass or rollers are dirty.If the scanning glass or rollers are dirty, the dirt will appear on the 
scanned image.
Clean the scanning glass and rollers. For details, see “Cleaning 
the Scanning Glass and Rollers,” on p. 45.
The scan conditions are inappropriate.If the scan...

45
Maintenance
This chapter describes how to clean and maintain the scanner.
To ensure high-quality image scanning, regularly clean your CR-50/80 
as described below.
CAUTION
Before you clean the scanner, turn OFF the scanner and computer, 
and disconnect the power cord from the power outlet. Otherwise, it 
may cause an electrical shock.
Never clean the scanner with any kind of organic solvent, such as 
alcohol, benzene, or paint thinner. This may cause a fire and electrical 
shock, or cause the exterior...

46
BWhile lowering the open lever, open the reading unit.
WARNING
Do not use flammable liquids to clean the scanner, including alcohol, 
benzene, or paint thinner.
CSpin the rollers while wiping them clean with a firmly wrung 
cloth dampened with water or a mild detergent.
There are 18 roller positions, as shown in the diagram below.
NOTE
Use cotton swabs to clean the rollers in locations that are too narrow for 
your fingers, such as a, b, j, n, o, and p.
Rollers in positions b, d, e, k, and p are...

47
DUse cotton swabs to clean the entire scanning glass. There 
are two scanning glass areas, one on each side. Use a cotton 
swab to wipe dirt from the entire surface of each.
IMPORTANT
Scratches on the scanning glass may cause marks on the images and could 
cause feeding errors. If there are scratches on the scanning glass, contact 
your local authorized Canon dealer or service representative.
EGently close the reading unit until it clicks into place.
FGently close the maintenance cover until it clicks...

48
Cleaning the Magnetic Heads
If the magnetic heads are dirty, then MICR characters cannot be 
scanned correctly. Periodically, clean the magnetic heads with a 
commercially available audio head cleaner.
AHook your finger around the open lever and open the 
maintenance cover.
BUse a commercially available audio head cleaner to clean the 
magnetic heads.
The magnetic head is located in the position shown in the 
diagram below.
CGently close the maintenance cover until it clicks into place.
Magnetic Head 

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Cleaning the Ink Jet Nozzles
Ink that collects around the ink jet nozzles may stain your documents 
or cause the text to appear as scratched. Clean the area around the ink 
jet nozzles periodically. Cleaning the ink jet nozzles is also efficient 
action when the printed text becomes faint.
AHook your finger around the open lever and open the 
Maintenance Cover.
BDampen a cloth with water, wring the cloth out thoroughly, 
and then wipe off the dirt around the ink absorber.
IMPORTANT
If your documents...

50
FCarefully replace the Imprinter Cover.
GGently close the Maintenance Cover until it clicks into place.
Make the following adjustments to maintain scanning quality.
Replacing the Ink CartridgeThe ink cartridge needs to be replaced if the printed text becomes 
scratchy or faint even if you have cleaned the ink jet nozzle. Replace 
the ink cartridge according to the following procedure below.
IMPORTANT
 To replace the ink cartridge, turn the scanner OFF before removing 
the Maintenance Cover. After the...