Canon Pixma MP800R User Manual page 152

Cause
Scanner is not selected in the
application software.
The feature of the application
software does not support TWAIN.
An error message appears and the
ScanGear MP window fails to appear
when using over a USB connection.
150 Troubleshooting
In the application software, select this machine in [Select Source] or
[Import] under the [File] menu.
Example: ArcSoft PhotoStudio
*Display may differ depending on your operating system.
If you are using an older application software, the menu item may be
named [Select TWAIN-compliant device] instead of [Select Source].
Start ScanGear MP from within a TWAIN compatible software.
Reattaching the USB cable. Be sure to use a certified USB 2.0 Hi-Speed
cable. You are recommended to use the cable no longer than 9.8 feet (3
meters).
If a USB hub is used for the connection, do not use it. Attach the cable
to a USB port on the computer itself (not the hub).
Attach the USB cable to a different USB port on the computer itself (not
a hub).
Set the Setup CD-ROM and install the software.
Select this machine in [Select Source] or [Import] in your application
software.
Make sure that your application software supports TWAIN. You cannot
start ScanGear MP from within an application software that does not
support TWAIN.
Action
Chapter 12