Appendices; Troubleshooting - NEC U321H User Manual

Appendices

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Troubleshooting

If you experience trouble with the projector, refer to the
following information. If the problem persists, please contact
your local dealer or service center.
Problem: 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.
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Check if the projection lamp has been securely installed. Please

refer to the "Replacing the lamp" section.
Make sure the projector is switched on.
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Ensure that the "AV-MUTE" feature is not turned on.

Problem: Partial, scrolling or incorrectly displayed image
Press "AUTO ADJ." on the remote control or control panel.

If you are using a PC:

For Windows 7:
1. From the "My Computer" icon, open the "Control Panel" folder,
and double click the "Display" icon.
2. Select the "Settings" tab
3. Click on the "Advanced Properties".
For Windows Vista:
1. From the "My Computer" icon, open the "Control Panel" folder,
and double click the "Appearance and Personalization"
2. Select "Personalization"
3. Click "Adjust screen resolution" to display "Display Settings".
Click on the "Advanced Settings".
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.