Fujitsu ScanSnap N1800 Operator's Manual page 60

2.2 Using the Scanner Buttons
When the scanner is starting up or in standby mode, be careful to never hold the
power button down for 4 seconds, as this will cause the scanner to shutdown. If this
happens, saved scanned data may become unusable.
If the power button is accidentally held down too long, causing the scanner to
shutdown, temporally detach the AC adaptor to ensure that the power is completely
off.
After turning the power off, wait for at least 10 seconds before turning the power
back on again. To shutdown the scanner correctly, press the [Shutdown] button on
the [Login] window.
When the scanner is left in standby mode for a long period of time, it may take a
long time to be resumed.
The idle time before standby mode entered can be changed. For details, refer to
"4.7.2 Setting the Time to Standby Mode" (page 110).
Automatic login without displaying the [Login] window is possible. For more details
about how to set automatic login, refer to "4.7.1 Setting the Login Settings" (page
107).
If automatic login is set, login via the Admin Tool is possible while the main menu or
job menu is displayed.
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