Avision IS25 manual - Manual (Page 119)

User’s Manual
8. Maintenance
8.1 Calibrating the scanner
If the scanned image looks fuzzy or there are strange
stripes on it, the scanner may need calibrating in order for
the sensor to resume its original precision. To calibrate the
scanner:
1. Make sure your SC card or USB flash drive is inserted in
the scanner.
2. Move the operation mode to the “SD/Flash” mode as
indicated.
3. Press the POWER knob to “6”. The System LED blinks
in green color in a few seconds.
The System LED