The ScanSnap Turns Off Automatically
If the ScanSnap turns off automatically, check the following:
Has the ScanSnap been turned on but not used for a certain period of time?
If the ScanSnap is compliant with "ErP Lot6", a regulation for energy saving, the ScanSnap will turn off automatically when it is left unused with the power on for the specified time (default is [After 4 hours]).
When the ScanSnap powered by a battery is turned on and left unused for the specified time (default is "5 minutes"), it will turn itself off automatically.
You can change the time of the ScanSnap to turn off automatically or change the setting so that it will not turn off automatically.
For details, refer to Power for the ScanSnap.