Avision AV620C2+ (DF-1015S/DF-1004S) - Manual (Page 98)

User’s Manual
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19. The LCD-display shows “Ready to scan”. Place your
document in the scanner.
Ready to scan
fBack
20. Press the Scan button on the scanner.
21. The scanner starts scanning and your scanned image will
be saved into your USB Flash Drive.
Note：
Follow the similar steps to change other scan settings.