Optoma EP731 User Manual - Page 26
Appendices
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English Appendices Troubleshooting If you experience trouble with the projector, refer to the following. If the problem persists, please contact your local reseller or service center. Problem: No image appears on screen. X Ensure all the cables and power connections are correctly and securely connected as described in the "Installation" section. X Ensure the pins of connectors are not crooked or broken. X Check if the projection lamp has been securely installed. Please refer to the "Changing the lamp" section. X Make sure you have removed the lens cap and the projector is switched on. X If you are using a Notebook PC: 1. Frist set computer resolution to recommend setting. 2. Switch the Notebook PC display to the "external display only" or "CRT only" mode. X If you experience difficulty change resolutions or your monitor freezes, restart all the equipment and the projector. 26