Xerox 4595 scanners image quality gone bad after initializing nvm values. It wasn't my first time of initializing nvm values, i did it once when i had problem with drum unit and at that time i didn't have such problem with scanner, but this time image looks awful. i'm not sure about the relationship between this problem and nvm values this problem may already accured before maybe i realised it after that. copy results are same as scanning results so i'm only sending scanned documents.
What i did:
Cleaned all mirors
Cleaned lens which located before sensor
Cleaned front glass
Entered all "nvm setting list" (the green paper from factory)