If only a partial computer image appears, try the
following solutions: 
- Try adjusting the image position using the
Lens button on the remote control
or control panel.
 
- Press the
Aspect button on the remote
control to select a different image aspect ratio.
 
- Check the Blanking
setting in the Installation menu.
 
- Check your
computer display settings to disable dual display and set the
resolution within the projector's limits. (See your computer manual
for details.)
 
- Check the
resolution assigned to your presentation files to see if they are
created for a different resolution than the one you are projecting.
(See your software help for details.)
 
- Make sure the lens shutter is fully open.
 
- Make sure you selected the correct Projection setting in the Installation
menu.