Ricoh fi-8040 Operator's Manual page 351

The factory default setting is [4 Hours].
HINT
● When the settings in the Software Operation Panel are configured as follows, the scanner is
not turned off even when the period of time specified for auto shutdown has passed.
- Selecting [Disable power switch] for [Power Switch Control] in [Device Setting 2]
- When [Fast] is selected as the startup mode of the scanner
For details, refer to Startup Mode Setting for the Scanner [Startup mode] (page
● The settings can also be configured on the touch screen.
Scanner Settings (Software Operation Panel)
351
355).