Setup Guide
Page 29
... flashes, open AirPort Utility, select your base station, and then choose Manual Setup from its connection to the network or the Internet. If Your AirPort Extreme Status Light Flashes Amber The Ethernet cable may not be connected properly, your AirPort Extreme may be out of range of an AirPort network, or there may have lost its power supply, waiting a few...
... flashes, open AirPort Utility, select your base station, and then choose Manual Setup from its connection to the network or the Internet. If Your AirPort Extreme Status Light Flashes Amber The Ethernet cable may not be connected properly, your AirPort Extreme may be out of range of an AirPort network, or there may have lost its power supply, waiting a few...