Avision AVA3 400 User Manual
Page 59
Troubleshooting
6-3
Question: While scanning, the scanner often makes noises,
or it scans back and forth.
Answer:
Usually this means the memory of your computer is not
enough or the speed of your CPU too slow. Please try
to increase your memory to at least 32M or replace your
CPU with Pentium or later.
Question: Why is it that the scanned image always comes out
to be too dark?
Answer:
1) Modify the Gamma setting to1.8~2.2 for your
monitor
and, when printing, set the Gamma setting to 2.2
for your printer.
2) Adjust the Brightness setting from the TWAIN
user interface to get a brighter image.
Question: The scanner works well except for the line art image.
The lines in the image seem to be much thicker than
the original one.
Answer:
Increase the Brightness or adjust the Threshold setting
to improve line art image.