Troubleshooting 75
If you have trouble using AirPort wireless communication:
mMake sure you have properly configured the software.
mMake sure the computer or network you are trying to connect to is running and has a
wireless access point.
mMake 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.
mSee 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.
mMake sure the display and computer are turned on.
mMake sure the cables are connected properly to your computer and the display.
mMake sure your computer is not in sleep. Press the power button or any key to see if the
computer wakes.
mMake sure the display brightness and contrast are set properly. Some monitors have
brightness and contrast controls on or under their front edge.
The screen image appears dim or flickers.
mAdjust 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 Monitors
control panel.
mCalibrate the monitor using the Calibrate option in the Monitors control panel.
mTheflickering may be caused by interference from a nearby power line, a fluorescent
light, or an electrical device—for example, a radio, a microwave oven, or another
computer. Try relocating nearby electrical devices or moving your computer and display.
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.