Nortel Networks 822p - Manual (Page 40)

40 Projecting
Adjusting the Image Shape
If the projector is tilted up or down, the images that are displayed will
be distorted. To correct the distortion or “keystone” shape, do one or
more of the following:
■ If your image looks like or , you’ve placed the projector
off to one side of the screen, at an angle. Move it directly in front
of the center of the screen, facing the screen squarely.
■ If your image looks like or , you need to adjust the
keystone correction value. Press the or buttons on the
projector to correct the shape of the image. After correction, your
image will be slightly smaller.
■ You may need to turn on Auto Keystone. See page 56 for
instructions.
You can also make keystone adjustments using the projector’s Settings
menu. See page 56.
Adjusting the Brightness
The brightness of an image depends on the source you are projecting
and the amount of light in the room. If the image is too bright or not
bright enough, here are two ways you can adjust it:
■ Change the Brightness setting in the Image menu. See page 53.
■ Select Low or High for the Brightness Control option in the
Settings menu. (See page 57.) Low brightness mode extends the
life of the lamp and decreases the fan noise.