Optoma EP1690 User Manual - Page 35

Appendices  If you are using a Notebook: 1. First, follow the steps above to adjust resolution of the computer. 2. Press the toggle output settings. example: [Fn]+[F4] Compaq  [Fn]+[F4] Dell  Gateway  [Fn]+[F8] [Fn]+[F4] Packard Hewlett  [Fn]+[F4] NEC  [Fn]+[F3] IBM  [Fn]+[F7] Toshiba  [Fn]+[F5] 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. 35 English