Nortel Networks 60-12T - Manual (Page 34)

Installation and Reference for the BayStack 60-12T/60-24T 10/100 Ethernet Hubs
4-2 206378-A
Diagnosing Hub Indicators
You can easily monitor the hub through LED indicators on the front panel.
Table 4-1 describes common problems and possible solutions.
Table 4-1. LED Indicators
Symptom Cause Solution
The Link 10/100 Mb/s
indicator does not
light up after making a
connection. A network interface, such as
an adapter card on the
attached device, a network
cable, or the hub port is
defective. • Verify that the hub and attached device are
powered on.
• Be sure the cable is securely plugged into the
hub and the device.
• Verify the proper cable length is being used.
• Check the adapter or cable connections for
defects. Replace defective parts.
The Power indicator
does not light up
(green) after powering
on. A power outlet, power cord, or
internal power supply is
defective. • Check the power outlet by plugging in another,
properly functioning, device.
• Check the power cord by plugging it into
another, properly functioning, device.
• If you still do not have power, contact Customer
Support, as explained in
“How to Get Help ” on
page xvi for assistance.
The hub powers off
after running for a
time. Loose connections, or power
surges or losses may have
occurred. • Check for loose power connections. Verify all
connections are seated securely.
• Determine if power surges or losses occurred at
the power outlet.
• Verify that the fan on the back of the hub is
unobstructed and running.