NEC LT240 - Adjusting the Picture Size and Position

E-42
PROJECTING AN IMAGE
Adjusting the Picture Size and Position
Place your projector on a flat level surface and ensure that the projector is
square to the screen.
Lift the front edge of the projector to center the image vertically.
Move the projector left to center the image horizontally on the screen.
Use the 3D REFORM feature for proper adjustment. See page E-45.