Avision AV220G (FF-0609H) - Manual (Page 78)

7-2
7.2 Cleaning the Calibration Area
1. Press the Paper Jam Clearing button. Open the front door
to the left.
2. Wet a cotton swab with some isopropyl alcohol. (95%)
3. Wipe the glass and the white area as illustrated in below by
moving the swab from side to side to rid the dust or dirt.
ADF Front Door
Calibration
Area
Feeding
Roller
ADF Pad