Optoma HD20 User's Manual - Page 38

ppendices Troubleshooting If you experience a problem with your projector, please refer to the following information. If a problem persists, please contact your local reseller or service center. Image Problems No image appears on-screen  Ensure all the cables and power connections are correctly and securely connected as described in the "Installation" section.  Ensure all the pins of connectors are not bent or broken.  Check if the projection lamp has been securely installed. Please refer to the "Replacing the lamp" section.  Make sure you have removed the lens cap and the projector is switched on. Image is out of focus  Make sure the lens cap is removed.  Adjust the Focus Ring on the projector lens.  Make sure the projection screen is between the required distance 4.89 to 32.68 feet (1.49 to 9.96 meters) from the projector. See page 16. The image is stretched when displaying 16:9 DVD title  When you play anamorphic DVD or 16:9 DVD, the projector will show the best image in 16:9 format on projector side.  If you play the LBX format DVD title, please change the format as LBX in projector OSD.  If you play 4:3 format DVD titles, please change the format to 4:3 in the projector OSD.  If the image is still stretched, you will also need to adjust the aspect ratio by referring to the following:  Please setup the display format as 16:9 (wide) aspect ratio type on your DVD player. 38