Acer XD1250D series - Manual (Page 37)

Appendices
35 ... English
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 1024 x 768 (XD1250/XD1250D)/800 x 600
(XD1150/XD1150D).
 If you are using a Notebook PC:
1. You are required to implement the above steps of resolution set-
ting of the computer fi rst.
2. Switch the Notebook PC display to the “external display only”
or “CRT only” mode.

If you experience diffi culty 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 Mir-
roring “On”.
Problem: Image is unstable or fl ickering
 Use “Tracking” to correct it. Refer to page 23.

Change the monitor color setting from your computer.
Problem: Image has vertical fl ickering bar
 Use “Frequency” to make an ad adjustment. Refer to page 23.
 Check and reconfi gure the display mode of your graphic card to
make it compatible with the product. Refer to page 40.
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 3.28
to 39.4 feet (1.0 to 12.0 meters) from the projector.