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Chapter 11 Troubleshooting 129
Problems scanning
zThe USB hub or repeater is defective.
If you can scan documents successfully after connecting the USB cable directly to the computer,
the USB hub or repeater may be broken. Replace if necessary.
zYou cannot scan because the machine is connected to a USB hub.
Connect the USB cable directly to the computer without using a USB hub. To connect to the
computer via a USB hub, overwrite the INI file by the following procedure. We recommend that
you copy to another folder the files you open in 1, and save the files before overwriting them.
1. In Memo Pad or Text Editor, open the following files.
•Windows 98/Me
Windows/System/CNCMP51.ini
•Windows 2000
WINNT/system32/CNCMP51.ini
•Windows XP
WINDOWS/SYSTEM32/CNCMP51.ini
2. Below the last line, add the following two lines, and save the files. Be careful not to overwrite
any other portion of the file.
[Scan]
ReadSize=16
zAfter installing the MP Toolbox and MP Drivers, you installed a
TWAIN-compliant application.
After installing the software on the machine, if you install a TWAIN-compliant application, the
TWAIN system files may not be correctly overwritten, and thus images may not be scanned.
Uninstall the software from the machine, then reinstall it. (See page 85.)
PC