Avision AV810CPlus User Manual page 59

Question: Getting an image from the scanner is not a problem, but,
when scanning, the scanner or system will often crash.
Please check
Answer:
1) If the cable is firmly seated;
2) Please note only two SCSI terminators can be connected
to your SCSI daisy chain. One is at the end of
SCSI device, another is already in your host
adapter.
Question: While scanning, the scanner often makes noises or it
scans back and forth.
Please choose lower speed from the TWAIN user
Answer:
interface for low speed PC.
Question: The scanned image always comes out to be too dark.
1) Use your application to modify the Gamma setting to
Answer:
2.2 and 1.8 for your printer and monitor respectively.
2) Adjust Brightness setting from the TWAIN
interface to get a brighter image.
Question: The scanner works well except for the line art, the
lines of which seem much thicker than the original.
Increase the Brightness or adjust the Threshold setting
Answer:
to adjust the line art image.
6-3
the