Software Operation Problems; You Cannot Start Epson Twain - Epson Perfection 640U Reference Manual

Software Operation Problems

You cannot start EPSON TWAIN.

❏ Plug in the scanner and then turn on the computer.
❏ Unplug the scanner and turn off the computer. Then check
the connection between the scanner and the computer.
❏ Make sure that EPSON TWAIN is selected in your application
software.
❏ Make sure your software is installed correctly.
For Windows users:
In the Device Manager menu, make sure your scanner's name
appears under Imaging Device hardware type without a
question (?) or an exclamation (!) mark. If the scanner appears
with a question (?) or an exclamation (!) mark, or as an
Unknown devices hardware type, click Remove to remove
it while the scanner is still connected and turned on. Then
reinstall EPSON TWAIN. See "Recovering from Scanner
Software Installation Problems on Windows" on page 5-21.
Note:
If the EPSON Scanners Driver Disk is requested during the
EPSON TWAIN reinstallation, insert the Scanner Software CD in
the CD-ROM drive. Be sure to specify the correct drive letter, the
EPSON folder, the folder of your preferred language, and the Win98
or Win2000 folder as the location.
5-16
Maintenance and Troubleshooting