NEC U300X User Manual page 49

User Controls
English ... 42
Ceiling Rear

When selected, the image will appear reversed in upside down
position.
Menu Location
Choose the menu location on the display screen.
Signal
Refer to next page.
Mute
Choose "On" to turn mute on.

Choose "Off" to turn mute off.

Volume
Press the button to decrease the volume.

Press the button to increase the volume.

Advanced
Refer to page 44.