Optoma HD50 - Manual (Page 40)

40
User Controls
System
Menu Location
Choose the menu location on the display screen.
Lamp Setting
Enter the Lamp Setting menu. See pages 42-43 for
more details.
Projection
Select projection method:

Front
The factory default setting.

Rear
When you select this function, the projector reverses the image
so you can project from behind a translucent screen.

Front Ceiling
When you select this function, the projector turns the image
upside down for ceiling-mounted projection.

Rear Ceiling
When you select this function, the projector reverses and turns
the image upside down at same time. You can project from
behind a translucent screen with ceiling mounted projection.
N
ote
N
ote
Hold "ENTER" key
on keypad for 10
seconds to unlock
keypad