Allied Telesis AT-8088/xx (MT and SC) - Manual (Page 74)

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Chapter 3
Troubleshooting
This chapter contains information on how to troubleshoot the switch in
the event a problem occurs.
Note
If after following the instructions in this chapter you are unable to
resolve the problem, contact Allied Telesyn Technical Support for
assistance. Refer to
Contacting Allied Telesyn on page 10 for
contact information.
Check the PWR LED on the front of the switch. If the LED is OFF,
indicating that the unit is not receiving power, do the following:
Make sure 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 using a different power cord.
Check that the voltage from the power source is within the
required levels for your region.