Acer PD520 User Manual page 28

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Appendices
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Problem : The screen of the Notebook or PowerBook
computer is not displaying your presentation.
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Problem : Image is unstable or flickering
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Problem : Image has vertical flickering bar
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4 . Follow above steps 1~2. Click on the "Advanced Properties"
button.
5 . Select the "Change" button under the "Monitor" tab .
6 . Click on "Show all devices". Then select "Standard monitor
types" under the "Manufactures" 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 1024 x 768.
If you are using a Notebook PC:
1 . You are required to implement above steps of resolution setting
of computer first.
2 . Switch the Notebook PC display to the "external display only"
or "CRT only" mode.
If you are experiencing difficulty in changing resolutions or your
monitor freezes, restart all the equipment and the projector.
If you are using Notebook PC:
Some Notebook PCs may deactivate their own computers' screen
when a second display device is in use. Each of them has a
different way to be reactivated. Refer to your computer's
documentation for detailed information.
If you are using an Apple PowerBook:
In Control Panels, open the PowerBook Display to select Video
Mirroring "On".
Use "Tracking" to correct it.
Change the monitor color setting from your computer.
Use "Frequency" to make an adjustment.
Check and reconfigure the display mode of your graphic card to
make it compatible with the product.
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