Specifications

90 Chapter 6

If you have trouble using AirPort wireless communication:

m Make sure you have properly conﬁgured the software according to the instructions that

came with your AirPort Card or AirPort Base Station.

m Make sure the computer or network you are trying to connect to is running and has a

wireless access point.

m Make sure you are within antenna range of the other computer or the network’s access

point. Nearby electronic devices or metal structures can interfere with wireless

communication and reduce this distance. Repositioning or rotating the computer may

improve reception.

m See AirPort Help (in the Help Center) and the instructions that came with the wireless

device for more information.

Problems With Your Display

No image appears on the screen.

m Make sure the display and computer are turned on.

m Make sure the cables are connected properly to your computer and the display.

m Make sure your computer is not in sleep. Press the power button or any key to see if the

computer wakes.

m Make sure the display brightness and contrast are set properly. Some monitors have

brightness and contrast controls on or under their front edge.

m Reset the PRAM by restarting the computer while holding down the Command (x),

Option, P, and R keys until you hear the startup sound a second time. Then start up using

the Software Install CD.

m If that doesn’t work but your display is functioning, then it is a software problem. Restart

your computer while pressing the Shift key to restart with your extensions off.

The screen image appears dim or flickers.

m Adjust the display brightness and contrast settings. Some monitors have brightness and

contrast controls on or under their front edge. Depending on how dim your monitor

appears, you may be able to adjust brightness or contrast using the Display pane of

System Preferences (in Mac OS X) or the Monitors control panel (in Mac OS 9).

Warning If you have a problem with your Apple display and nothing presented in this

manual solves it, contact an Apple-authorized service provider or Apple for assistance.

If you attempt to repair the display yourself, any damage you may cause to the display

will not be covered by the limited warranty on your display. Contact an Apple-authorized

dealer or service provider for additional information about this or any other warranty

question.