Troubleshooting

This section describes the problems that may occur while using the scanner and how to resolve them.

It you cannot resolve a problem, contact your local authorized Canon dealer or your service representative.

Common Problems and Solutions

Problem 1 The scanner will not turn on.

Solutions

(1) Confirm that the power switch is set correctly.

 

(2)

Confirm that the AC adapter is plugged firmly into a

 

 

power outlet.

Problem 2 The scanner is not recognized.

Solutions

(1) Confirm that the scanner is properly connected to

 

 

the computer with a USB cable.

 

(2)

Confirm that the scanner is turned on. See “Problem

 

 

1 The scanner will not turn on.”.

 

(3)

The computer's USB interface may not support the

 

 

scanner. The scanner cannot be guaranteed to work

 

 

with all USB interfaces.

 

(4)

Confirm that the supplied USB cable is used to

 

 

connect the scanner to the computer. The scanner

 

 

cannot be guaranteed to work with all available USB

 

 

cables.

 

(5)

If the scanner is connected to the computer via a

 

 

USB hub, try removing the hub and connecting

 

 

directly to the computer.

 

(6)

Disconnect the USB cable, and connect it again.

Problem 3 Documents feed askew (scanned images are

 

slanted).

Solutions

(1)

Align the document guides to fit the documents as

 

 

closely as possible, and load the documents so that

 

 

they feed straightly.

 

(2)

Enable the [Deskew] scanner driver setting.

 

(3)

If many pages have been scanned since roller

 

 

cleaning, clean the rollers. If documents still feed

 

 

askew, roller replacement or other maintenance

 

 

may be needed. Refer to the page 61 for roller

 

 

cleaning and replacement procedures.

Problem 4 Both sides are not scanned even when the Duplex

 

scanner driver setting is enabled.

Solutions

In CaptureOnTouch or CapturePerfect 3.0, executing a

 

job for which single-sided (simplex) scanning is

 

registered will always result in simplex scanning,

 

regardless of scanner driver settings. For example, if

 

[Simplex] is selected under the [Scanner setting] tab of

 

the [Job Register] dialog box in CaptureOnTouch,

 

scanning will always be single-sided for that job. Even if

 

you configure scanner driver settings from [Scan Batch

 

to File] under the [Scan] menu in CapturePerfect 3.0, a

 

job will always be performed according to its registered

 

settings. To perform duplex scanning, either change the

 

job setting or create another job for duplex scanning.

Problem 5 If white lines or streaks appear in scanned images.

Solutions

Clean both sides of the scanner glass, and the rollers

 

(both rubber and metal). If a sticky substance such as

 

glue or correction fluid is found, carefully wipe with just

 

enough pressure to clean the area where the lines

 

appear. If the problem cannot be solved by cleaning, the

 

internal glass may be scratched. Contact your local

 

authorized Canon dealer.

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