Digiframe DF-SC6402 - Manual (Page 15)

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6. Maintenance
6.1 Cleaning the Roller
1. Clean the scanner’s outer casing first, using only the recommended
and supplied tools.
2. Connect the power supply to the scanner.
3. Press and hold the power button for about 0.5 seconds to power the
scanner on.
4. Insert SD card or USB device, then the light turn green.
5. Please hold the Custom button about 0.5 seconds.