Optoma X306sti Manual page 51

(*) For Type B

model only.
Background Color
Use this feature to display a "Black", "Red", "Blue", "Green" or
"White", screen when no signal is available.
IR Function
(*)
When this function is "On" , the projector can be operated by the
remote control from IR receiver. By selecting "Off", you will be able
to use the control panel keys.
Reset
Choose "Yes" to return the display parameters on all menus to the
factory default settings.
User Controls
51
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