Epson Perfection 640U Reference Manual page 76

printed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
Software Setup Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
You cannot install EPSON TWAIN. . . . . . . . . . . . . . . . . . . . 5-15
Software Operation Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
You cannot start EPSON TWAIN. . . . . . . . . . . . . . . . . . . . . 5-15
Scanning Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
Image is dark, with little or no detail. . . . . . . . . . . . . . . . . . 5-16
You cannot scan an image or you only get a few dots for the
scanned image. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
Moiré (cross-hatch) patterns appear in the scanned image 5-17
Colors differ from the original. . . . . . . . . . . . . . . . . . . . . . . . 5-17
Pressing the button on the scanner does not start scanning.5-17
Scanned image by using the button is missing. . . . . . . . . . 5-18
Upgrading from Windows 98 to Windows 2000 . . . . . . . . . . . . . 5-18
Recovering from Scanner Software Installation Problems on Windows
5-20
For Windows 98 users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
For Windows 2000 users . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
Sizing up Your System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
RAM and hard disk size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Accelerator boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Video cards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Monitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
File compression software . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
5-2
Maintenance and Troubleshooting