40
Troubleshooting
This chapter describes the problems that might occur in the CR-50/80,
and how to remedy them.
The following causes and remedies describe why your computer may
not recognize the scanner.
If paper has jammed, open the Maintenance Cover and remove the
jammed paper.
IMPORTANT
Do not attempt to pull the jammed paper upwards or backwards against the
feeding direction. Doing so can damage the internal parts of the scanner.
CAUTION
•
Be careful when you clear a paper jam. You may be injured
unexpectedly. For example, the paper edges may cut your fingers, or
the document may be damaged.
•
Remove all jammed sheets of paper. Paper scraps left inside the
scanner may cause a paper jam or malfunction.
A
Hook your finger around the open lever and open the
Maintenance Cover.
When the Scanner Is Not Recognized
Cause
The Scanning Utility is not installed.
Remedy
Install the Scanning Utility before connecting the scanner to
the computer. (See “Setting Up the Scanner,” on p. 17.)
Cause
The scanner is not correctly connected to the computer.
Remedy
Connect the scanner to the computer correctly. (See
“Connecting the Scanner to a Computer,” on p. 21.)
Cause
The USB interface provided as standard with your
computer is not compatible with the scanner.
Remedy
Not all USB interfaces provided as standard with personal
computers are guaranteed. Contact your local authorized
Canon dealer for more detailed information. (See “Checking
Your Operating Environment,” on p. 18.)
Cause
USB cable is not compatible with the scanner.
Remedy
Use the USB cable provided with the scanner. (See
“Checking Your Operating Environment,” on p. 18.)
Cause
USB hub is not compatible with the scanner.
Remedy
Remove the USB hub to use the scanner. (See “Checking
Your Operating Environment,” on p. 18.)
Clearing Paper Jams
