Apple AirPort Express v4.2 - Manual (Page 37)

Tips and Troubleshooting 37
5 In the dialog that appears, make the following changes:
 Reset the AirPort Express password.
 Turn encryption on to activate password protection for your AirPort network. If you
turn on encryption, enter a new password for your AirPort network.
6 Click OK.
AirPort Express restarts to load the new settings.
Your AirPort Express Isn’t Responding
Try unplugging it and plugging it back in to a power outlet.
If your AirPort Express stops responding completely, you may need to reset it to the
factory default settings. This erases all of the settings you’ve made and resets them to
the settings that came with the AirPort Express.
Your AirPort Express Status Light Flashes Amber
The Ethernet cable may not be connected properly, AirPort Express may be out of
range of an AirPort network, or there may be a problem with your Internet service
provider. If you are connected to the Internet with a DSL or cable modem, the modem
may have lost its connection to the network or the Internet. Even if the modem seems
to be working properly, try disconnecting the modem from its power supply, waiting a
few seconds, and then reconnecting it. Make sure AirPort Express is connected directly
to the modem via Ethernet before reconnecting power to the modem.
If your AirPort Express is set up in a WDS, the WDS link may be interrupted.
Note: If AirPort Express is set up as a wireless client and the network it's joining is
protected by an access control list (ACL), AirPort Express must be in the ACL to connect
to the network.