During scanning color band appear on image what to do


thanks for sugetion but it not work
 
If you scan several subject the full of size or larger than the scanner flatbed (something like newspaper pages) does the band appear in the same position each time.

Suggests, image sensor fault. I doubt if it's economic to repair that.
 

Thanks for suggetion but it can't work
 
If you scan several subject the full of size or larger than the scanner flatbed (something like newspaper pages) does the band appear in the same position each time.

Suggests, image sensor fault. I doubt if it's economic to repair that.
thanks for suggetion actually i use scanner for photo scanning when i complaint to company they gave me replacement scanner but same problem appear again.so i attached my scanner to another PC and Scan i never face the problem but when again i attached with my PC i got same Problem