Optoma EP759 - Manual (Page 28)

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Appendices
Problem: No image appears on screen.
4 Ensure all the cables and power connections are correctly and
securely connected as described in the “Installation” section.
4 Ensure the pins of connectors are not crooked or broken.
4 Check if the projection lamp has been securely installed. Please
refer to the “Replacing the lamp” section.
4 Make sure you have removed the lens cap and the projector is
switched on.
4 Press A/V Mute button to maker sure the image has not been
turned off temporarily.
Problem: Partial, scrolling or incorrectly displayed image.
4 Press the “Sync” button on the Remote Control or Press the
“Re-Sync” button on the Control Panel.
4 If you use a PC:
If the resolution of your computer is higher than 1024 x 768.
Follow the steps outlined below to reset the resolution.
For Windows 3.x:
1. In the Windows Program Manager, click the “Windows Setup”
icon in the Main group.
2. Verify that your display resolution setting is less than or equal
to 1024 x 768.
For Windows 95,98,2000,XP:
1. Open “My Computer” icon, the “Control Panel” folder, and
then double click on the “Display” icon.
2. Select the “Setting” tab.
3. In the “Desktop Area” you will find the resolution setting.
Verify that the resolution setting is less than or equal to 1024 x
768 resolution.
If the projector is still not projecting the whole image, you will
also need to change the monitor display you are using. Refer to
the following steps.
Troubleshooting
If you experience trouble with the projector, refer to
the following information. If the problem persists, please
contact your local reseller or service center.