Optoma W401 User Manual page 59

If you are using a Notebook:
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1. First, follow the steps above to adjust resolution of the
computer.
2. Press the appropriate keys listed below for your notebook
manufacturer to send signal out from notebook to projector.
Example: [Fn]+[F4]
Acer 
Asus 
Dell 
Gateway 
Mac Apple:
System Preference  Display  Arrangement  Mirror
display
If you experience difficulty changing resolutions or your moni-
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tor freezes, restart all equipment including the projector.
The screen of the Notebook or PowerBook computer is
not displaying your presentation
If you are using a Notebook PC:
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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 manual for detailed
information.
Image is unstable or flickering
Use "Phase" to correct it. See page 36 for more information.
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Change the monitor color setting on your computer.
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Image has vertical flickering bar
Use "Frequency" to make an adjustment. See page 36 for
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more information.
Check and re-configure the display mode of your graphic card
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to make it compatible with the projector.
Image is out of focus
Make sure the Lens cap is removed.
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Adjust the Focus Ring on the projector lens.
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Make sure the projection screen is between the required dis-
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tance from the projector. (refer to pages 21-22)
Appendices
[Fn]+[F5] IBM/Lenovo 
[Fn]+[F8] HP/Compaq 
[Fn]+[F8] NEC 
[Fn]+[F4] Toshiba 
Some Notebook PCs may
[Fn]+[F7]
[Fn]+[F4]
[Fn]+[F3]
[Fn]+[F5]
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