Troubleshooting; Trouble Categories; Problem And Solution - Canon IMAGE FORMULA DR-7550C Reference Manual

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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. 51)
• The Scanner Is Not Recognized (Connecting via USB)
(See p. 51)
• The Scanner Is Not Recognized (Connecting via
SCSI) (See p. 51)
• Scanning Is Not Performed (See p. 52)
• Slow Scanning Speed (See p. 52)
• Documents Do Not Feed Properly (See p. 53)
• Saved Image Files Do Not Open (See p. 53)
• Scanning Results Are Not as Expected (See p. 53)
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.
■ The Scanner Is Not Recognized (Connecting
via SCSI)
If the scanner's SCSI 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?
✔ Is the SCSI card in the PC operating properly?
✔ Was the PC turned ON before the scanner?
IMPORTANT
When using the SCSI connection, if the scanner is turned ON
after the PC, it may not be properly recognized by the PC.
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