ViewSonic PJ402D manual Audio, Auto Shutdown

Auto Shutdown	Uses this function to automatically turn off the lamp if the
	projector does not detect an input signal for specified
	time period (30 minutes).
	Select the desired setting with the e / f buttons:
	ON
	OFF
OSD Timeout	Duration OSD (On-Screen Display) menu stays active (at
	idle state by second).
	Select the desired setting with the e / f buttons.
Menu Position	Selects the position of the OSD (On-Screen Display) menu
	on the screen.
	Select the desired setting with the e / f buttons.
Factory Reset	Resets the projector to its factory default settings.
	Press the MENU\ENTER button on the Projector Control Panel or the
	Enter button on the Remote Control to enter its sub-menu, select
	the desired setting with the e/ fbuttons, and confirm the selection
	with the MENU\ENTER button on the Projector Control Panel or the
	Enter button on the Remote Control again.

Audio

Option	Actions/Descriptions
Volume	Adjusts the volume.
	Select the desired setting with the e / f buttons:
	Press the e button to decrease the volume.
	Press the f button to increase the volume.
Mute	Cuts off the sound temporarily.
	Select the desired setting with the e / f buttons:
	ON
	OFF
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