3Com 3CNJ205 Switch User Manual


 
Troubleshooting
76
Troubleshooting Matrix
Event/
Message Description Solution
Power LED is
not on
IntelliJack is not receiving
power
Ensure power supply is
properly connected.
For power over Ethernet,
make sure that the cable is
connected to both the
LAN port on the back of
the IntelliJack and to the
workgroup switch.
Link LED is
not on
IntelliJack has no
connection to the
network
n Make sure network
cable is properly
terminated.
n Make sure the
IntelliJack is
connected to the
network.
n Make sure the cable
is plugged into the
workgroup switch.
Green LEDs
on Ports 1-4
are not on
Network device has no
connection to IntelliJack
n Make sure the cable
is properly
connected to the
network device.
n Make sure the cable
is firmly connected
to one of the four
IntelliJack ports
labeled 1-4.
n Make sure the cable
is a good straight-
through cable.