Acer XD1170 - Manual (Page 36)

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Appendices
4. Follow the 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 “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 moni-
tor freezes, restart all the equipment and the projector.
Problem: The screen of the Notebook or PowerBook com-
puter 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 23.
 Change the monitor color setting from your computer.
Problem: Image has vertical flickering bar
 Use “Frequency” to make an ad adjustment. Refer to page 23.
 Check and reconfigure the display mode of your graphic card to
make it compatible with the product. Refer to page 25.
Problem: Image is out of focus
 Adjusts the Focus Ring on the projector lens. Refer to page 14.
 Make sure the projection screen is between the required distance
4.9 to 39.4 feet (1.5 to12.0 meters) from the projector.