Optoma EX855 User Manual download pdf (Page 74)

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Appendices

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 the pins of connectors are not crooked 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.

Ensure that the “AV Mute” feature is not turned on.

Partial, scrolling or incorrectly displayed image

Press “Re-SYNC” on the remote.

If you are using a PC:

For Windows 95, 98, 2000, XP, Windows 7:

1. Open the “My Computer” icon, the “Control Panel” folder,

and then double click on the “Display” icon.

2. Select the “Settings” tab.

3. Verify that your display resolution setting is lower than or

equal to UXGA (1600 x 1200).

4. Click on the “Advanced Properties” button.

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.

5. Verify the resolution setting is lower than or equal to UXGA

(1600 x 1200).

6. Select the “Change” button under the “Monitor” tab.

7. Click on “Show all devices”. Next, select “Standard monitor

types” under the SP box; choose the resolution mode you

need under the “Models” box.

8. Verify that the resolution setting of the monitor display is

lower than or equal to UXGA (1600 x 1200).

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Optoma EX855 User Manual Page 74