Optoma EH490 - Volume and Microphone Settings; Security Settings Configuration

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USING THE PROJECTOR
Setup audio settings volume menu
SETUP
Exit
Audio Settings : Volume
Audio
Mic
Audio
Adjust the volume level.
Press the  to decrease the volume.
Press the  to increase the volume.
Mic (XGA only)
Adjust the microphone input sound level.
Press the  to decrease the microphone input sound level.
Press the  to increase the microphone input sound level.
Setup Security menu
Security
SETUP
Exit
Off
Security
Security Timer
Change Password
Security
Enable this function to prompt for a password before using the projector.
On: Choose "On" to use security verication when the turning on the projector. 
Off: Choose "Off" to be able to switch on the projector without password verication. 