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6-5
Chapter 6 Practical Examples
2. Troubleshooting
This section describes the problems that may occur during use of the scanner and how to solve them.
Trouble Categories
The following trouble categories are addressed:
• The Scanner Does Not Turn ON (See p. 6-5)
• The Scanner Is Not Recognized (Connecting via USB)
(See p. 6-5)
• Scanning Is Not Performed (See p. 6-5)
• Slow Scanning Speed (See p. 6-6)
• Documents Do Not Feed Properly (See p. 6-6)
• Saved Image Files Do Not Open (See p. 6-7)
• Scanning Results Are Not as Expected (See p. 6-7)
It you cannot resolve a problem, contact your local authorized
Canon dealer or your service representative.
Problem and Solution
■ The Scanner Does Not Turn ON
If the scanner does not turn ON, first confirm the
following:
✔ Is the power cord connected correctly?
✔ Is the power cord inserted into the power outlet?
■ The Scanner Is Not Recognized (Connecting
via USB)
If the scanner’s USB connection is not recognized, first
confirm the following:
✔ Are the scanner and PC connected correctly using the
proper cable?
✔ Is the scanner’s power switch turned ON?
If this does not solve the problem, consider the following
possible causes:
Cause The scanner does not support your USB
interface.
Solution This product is not guaranteed to operate with
all types of USB interfaces. Contact your local
authorized Canon dealer or service
representative for more information.
Cause The scanner does not support the USB
cable.
Solution Use the USB cable provided with the scanner.
Cause The USB hub is not compatible with the
scanner.
Solution Remove the USB hub.
■ Scanning Is Not Performed
If scanning does not start when it should, first confirm the
following:
✔ Are the scanner and PC correctly connected with the
proper cable?
✔ Is the scanner’s power switch turned ON?
If this does not solve the problem, consider the following
possible causes:
Cause The ISIS/TWAIN driver and Job
Registration Tool are not installed
correctly.
Solution Uninstall and then reinstall the ISIS/TWAIN
driver and Job Registration Tool.