1?clean the unit at least once a week or when 50,000 sheets have been scanned, whichever comes first.

    2?clean the rollers, document sensors and double feed detection sensors if paper jamming or double feeding occurs frequently.

    3?clean the scanning section glass and sensor rollers when black or white lines appear on the scanned images.

    4?if the documents you are scanning are dirty, then the scanner parts will become dirty as well.

    to maintain proper scanning, clean the scanner parts frequently.