Allied Telesis AT-GS950/48 - Manual (Page 43)

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Chapter 3
Troubleshooting
This chapter contains information on how to troubleshoot the switch if a
problem occurs.
Note
For further assistance, please contact Allied Telesis Technical
Support at www.alliedtelesis.com/support.
Problem 1: The POWER LED on the front of the switch is off.
Solutions: The unit is not receiving power. Try the following:
❒ Verify that the power cord is securely connected to the power
source and to the AC connector on the back panel of the switch.
❒ Verify that the power outlet has power by connecting another
device
to it.
❒ Try connecting the unit to another power source.
❒ Try a different power cord.
❒ Verify that the voltage from the power source is within the required
levels for your region.
Problem 2: All of the port LEDs are off even though the ports are
connected to active network devices.
Solution: The switch is probably operating in low power mode. To toggle
on the LEDs, press the eco-friendly button on the front panel.
Problem 3: A twisted pair port on the switch is connected to a network
device but the port’s LINK/ACT LED is off.
Solutions: The port is unable to establish a link to a network device. Try
the following:
❒ Verify that the network device connected to the twisted pair port is
powered on and is operating properly.
❒ Verify that the twisted pair cable is securely connected to the port
on the media converter channel and to the port on the remote
network device.
❒ Verify that the port is connected to the correct twisted pair cable.
This is to eliminate the possibility that the port is connected to the
wrong network device, such as a powered off device.