Appendices, English, Problem: image is unstable or flickering – Optoma Digital Tuner Output Projector User Manual

Page 27: Problem: image has vertical flickering bar, Problem: image is out of focus

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6. Click on “Show all devices”. Then select “Standard monitor

types” under the “Manufacturers” box ; choose the resolution

mode you need under the “Models” box.

7. Verify that the resolution setting of the monitor display is less

than or equal to 800 x 600.

If you are using a Notebook PC:
1. You are required to implement the above steps of resolution

setting of the computer first.

2. Switch the Notebook PC display to the “external display only”

or “CRT only” mode.

If you experience difficulty in changing resolutions or your
monitor freezes, restart all the equipment and the projector.

Problem: The screen of the Notebook or PowerBook computer

is not displaying your presentation.

If you are using a Notebook PC:
Some Notebook PCs may deactivate their screens when a second

display device is in use. Refer to your computer’s documentation

for information on how to reactivate the monitor display.

If you are using an Apple PowerBook:
In Control Panels, open the PowerBook Display to select Video

Mirroring “On”.

Problem: Image is unstable or flickering

Use “Tracking” to correct it. Refer to page 19.

Change the monitor color setting from your computer.

Problem: Image has vertical flickering bar

Use “Frequency” to make an adjustment. Refer to page 19.

Check and reconfigure the display mode of your graphic card to
make it compatible with the product. Refer to page 26.

Problem: Image is out of focus

Adjusts the Focus Ring on the projector lens. Refer to page 13.

Make sure the projection screen is between the required distance
4.6 to 39.4 feet (1.4 to 12.0 meters) from the projector.

Appendices