Why are only part of my images blurred or out of focus?

• Turn the focus ring on the projector to see if this improves the image. Check that the projector is within the recommended distance for the size of the screen (refer to the table on page 4 of the User's Guide for more information). For the sharpest images, the projector must be perpendicular to the screen and the projection surface must be flat. You can also try adjusting the Brightness and Contrast settings on the Computer Image or Video Image main menu. If you are viewing a computer image, try adjusting the Comp Tracking and Comp Sync buttons on the projector's control panel. Try cleaning the lens to remove any dirt or smears on the lens.