Epson STYLUS SCAN 2500 User Manual page 241

If this happens on both your screen and printout, the scanner's
sensor may be malfunctioning. Consult your dealer.
A line of dots always appears in the scanned image
If this happens on both your screen and printout, the paper path
guide of the Auto Document Feeder or the document table may
be dusty or scratched. Clean the paper path guide, or clean the
document table. If the problem still exists the guide may be
scratched and require replacement.
When halftoning is used, textured patterns of dots appear on
particular areas of an image
This is normal.Your scanner automatically minimizes the
problem if Best & de-screening is selected as the Quality & de-
screening setting in the Image Type dialog box.
Colors in the image look odd
Make sure the Image Type and Destination settings in EPSON
TWAIN are selected correctly.
When you are using the Film Adapter, make sure the rectangular
opening near the hinges on the base is uncovered, or make sure
the top of the Film Adapter is closed when scanning.
Colors on your monitor are different from those in the original
image
Check the image settings in your scanner software, especially data
format (bits/pixel/color), gamma correction, and color
correction. Try a different combination of these settings.
Check the color matching and color management capabilities of
your computer, display adapter, and software. Some computers
can change the color palette to adjust the colors on your screen.
(See your software and computer manuals.)
12-20
Troubleshooting