Allied Telesis AT-FS724i - Manuel (Page 27)

15
Chapter 3
Troubleshooting
Follow the guidelines below to test and troubleshoot the installation in the
event a problem occurs.
If the POWER LED is OFF, do the following:
" For an external power supply, check to be sure that the power adapter
is securely connected to a power outlet and that the power adapter
cable is securely connected to the back of the switch.
"
For an internal power supply, check to be sure that the power cord is
securely connected to a power outlet and that the other end of the
power cord is securely connected to the back of the switch.
"
Verify that the power outlet has power by connecting another device
to it.
"
Try using another power adapter or power cord, depending on your
model.
If a LINK/ACTIVITY LED is OFF, do the following:
"
Check that the end-node connected to the port is powered ON and is
operating properly.
" Check that the twisted pair cable is securely connected to the twisted
pair port on the switch and to the port on the remote end-node.
" Make sure that the twisted pair cable does not exceed 100 meters (328
feet) and that you are using Category 3 or better cable for 10Base-T
operation or Category 5 or better cable for 100Base-TX operation.
" Verify that the end-node is operating at 10 Mbps or 100 Mbps.
If you are still experiencing problems after testing and troubleshooting the
installation, contact Allied Telesyn Technical Support for assistance. Refer to
“Contacting Allied Telesyn Technical Support” on page x or visit our web site
at www.alliedtelesyn.com for support information.