Optoma EP1690 User Manual page 35

If you are using a Notebook:

1. First, follow the steps above to adjust resolution of the com-
puter.
2. Press the toggle output settings. example: [Fn]+[F4]
Compaq 
Dell 
Gateway 
IBM 
Mac Apple:
System Preference  Display  Arrangement  Mirror
display
If you experience difficulty changing resolutions or your monitor

freezes, restart all equipment including the projector.
Problem: The screen of the Notebook or PowerBook computer
is not displaying a presentation
If you are using a Notebook PC:

Some Notebook PCs may deactivate their own screens when a
second display device is in use. Each has a different way to be
reactivated. Refer to your computer's documentation for detailed
information.
Problem: Image is unstable or flickering
Use "Phase" to correct it.

Change the monitor colour setting on your computer.

Problem: Image has vertical flickering bar
Use "Frequency" to make an adjustment.

Check and reconfigure the display mode of your graphic card to

make it compatible with the product.
Problem: Image is out of focus
Adjusts the Focus Ring on the projector lens.

Make sure the projection screen is between distance 4.9 to 40.0 feet

(1.5 to 12.2 meters) from the projector. See page 15.
http://www.pureglare.com.au
Appendices
[Fn]+[F4] Packard
[Fn]+[F8] Hewlett
[Fn]+[F4] NEC 
[Fn]+[F7] Toshiba 
 [Fn]+[F4]
[Fn]+[F3]
[Fn]+[F5]
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