If the projector is angled sharply toward the screen, it may not be possible to focus the entire image. Move the projector to position it more directly in front of the screen.
Make sure the projector is within the proper range (2.7 to 48.2 feet) from the screen.
Make sure the lens is not fogged by condensation. You may need to wait before using the projector after moving it from a cold environment to a warm environment.
If you’re projecting from a computer and displaying an image that contains a lot of fine detail, you may notice vertical bands or some of the characters may look heavy or blurred. Press the Auto button on the remote control or the Enter button on the projector to reset the projector’s Tracking, Sync, and Position settings.
If further adjustment is needed, you can fine-tune the Tracking and Sync settings manually using the Signal menu. See Adjusting Signal Settings.
Fill the screen with an image containing fine detail, such as a pattern to appear as your desktop background, or try projecting black text on a white background.
Adjust the Tracking to eliminate vertical bands.
Adjust the Sync setting to increase the image sharpness.