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Delta Elec. Inc.
Common problems and solutions
These guidelines provide tips to deal with problems you may encounter while using the projector. If the
problem remains unsolved, contact your dealer for assistance.
Often after time spent troubleshooting, the problem is traced to something as simple as a loose
connection. Check the following before proceeding to the problem-specific solutions.
•
Use some other electrical device to confirm that the electrical outlet is working.
•
Ensure the projector is turned on.
•
Ensure all connections are securely attached.
•
Ensure the attached device is turned on.
•
Ensure a connected PC is not in suspend or sleep mode.
•
Ensure the connected notebook computer is properly configured for an external display
Image Problems
Problem: No image appears on the screen
1.Verify the settings on your notebook or desktop PC.
2.Turn off all equipment and power up again in the correct order.
Problem: The image is blurred
1.Adjust the Focus on the projector.
2.Ensure the Qumi-to-screen distance is within the specified range.
3.Check that the Qumi lens is clean.
Problem: The image is wider at the top or bottom (trapezoid effect)
1.Position the Qumi so it is as perpendicular to the screen as possible.
2.Use the Keystone button on the remote control or projector to correct the problem.
Problem: The image is reversed
1.Check the orientation of the projection setting in the Installation I menu of the OSD.
Problem: The image is streaked
1.Set the Frequency and Tracing settings on the Computer menu of the OSD to the default
settings.
Company Confidential
15
Qumi
Vivitek ______________________
Ver.02
Delta____________
2011/07/05
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