I see dark vertical bands when projecting from a computer. What should I do?

• The Tracking and/or Sync settings may need to be adjusted. Press the Auto button on the remote control to reset the projector's tracking and sync settings.
  
  If further adjustment is needed, you can fine-tune the Tracking and Sync settings manually using the projector's Signal menu.
  1. 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.
  2. Adjust the Tracking to eliminate vertical bands.
     
  3. Adjust the Sync setting to increase the image sharpness.