Allied-telesis AT-FS750/48 User Manual download pdf (Page 51)

Chapter 3

Troubleshooting

This chapter contains information on how to troubleshoot the switch in the

event that a problem occurs.

Note

If you need further assistance, please contact Allied Telesis

Technical Support. Refer to “Contacting Allied Telesis” on page 14.

Check the POWER LED on the front of the switch. If the LED is off,

indicating that the unit is not receiving power, do the following:

 Ensure 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.

 Verify that the voltage from the power source is within the required

levels for your region.

Verify that the LINK/ACT LED for each port is ON. If a LINK/ACT LED is

OFF, do the following:

 Verify that the end node connected to the port is powered on and is

operating properly.

 Verify that the twisted pair cable is securely connected to the port on

the switch and to the port on the end node.

 Ensure that the twisted pair cable does not exceed 100 meters (328

feet).

 Verify that you are using the appropriate category of twisted pair

cable:

– Category 3 or better for 10 Mbps operation

– Category 5 and Category 5E for 100 and 1000

Mbps operation.

Note

A 1000Base connection may require five to ten seconds to establish

a link.

1 2 ... 46 47 48 49 50 51 52 53 54 55 56 ... 61 62

No comments

Allied-telesis AT-FS750/48 User Manual Page 51