Optoma Optoma TXR774 - Manual (Page 44)

English
44
Options
Keypad Lock
Lock the buttons on the projector top panel.
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Off—projector keypad functions as normal.
Background Color
Select the desired background color for the projected image when no
source is detected.
Advanced
Enter the Advanced menu. See page 45 for more details.
Lamp Setting
Enter the Lamp Setting menu. See pages 46-47 for more details.
Reset
Reset all Options to default factory settings.
User Controls