Check the following:
- If you're using a computer cable longer than 6 feet (1.8 meters), or an extension cable, the image quality may be reduced.
- Keep your computer and video cables away from the power cord as much as possible to prevent interference.
- The video signal may be split between the computer and the projector. If you notice a decline in the projected image quality when the image is displayed simultaneously on your laptop computer and the projector, turn off the laptop's LCD display.
- Make sure the correct input signal is selected in the Signal menu. See Adjusting Signal Settings.
- If you're using a composite, S-Video, or component video source with 480i signals, turn on the Progressive setting on the Signal menu. See Adjusting Signal Settings.
- If you've used the Keystone adjustment, you may need to decrease the Sharpness setting in the Image menu. See Adjusting the Image.
- If you're projecting from a computer, make sure its signal is compatible with the projector. See Compatible Video Formats.
- If you're projecting from a computer, press the Auto button on the remote control to reset the projector's Tracking, Sync, and Position settings.