General Description 2-29LAN Connector LEDx LINK/ACT LEDThe LINK/ACT LED shows the status of a standard network port. It is green if power issupplied to the main unit and hub, and they are connected correctly (“LINK”). It blinks greenwhile the network port sends or receives data (ACT).When the LED does not illuminate during “LINK,” check the condition and connection ofnetwork cables. If there is nothing wrong with the cables, a defect is suspected in the network(LAN) controller. In this case, contact your sales agent.x Speed LEDThis LED indicates the network interface of the communication mode used by a network port.1000BASE-T and 100BASE-TX are the supported LAN port types. When this LED illuminatesin amber, the port is operating on 1000BASE-T. When the LED illuminates in green, the port isoperating on 100BASE-TX.Power Supply Unit LEDPower supply units located at the rear have power supply unit LEDs. When power is supplied to apower supply unit by connecting a power cord to the AC inlet of the power supply unit, its LEDblinks in green. When the server is powered on, the LED illuminates in green. If the LED does notilluminate in green or illuminates/blinks in amber, the power supply unit may be failing. Contactyour service agent and ask for replacement of the power supply unit.ᴾCooling Fan LEDCooling fan units located at the rear have cooling fan LEDs. While a cooling fan unit is workingnormally, its LED illuminates in green. When the LED illuminates in amber, the fan unit may havea problem. Contact you service agent and ask for the replacement of the cooling fan unit.ᴾ