American Power Conversion AP9615 Manuale Utente

12

Col

Blinking 

Normal data 
collisions on the 
network.

No action is necessary.

Col

Blinking 
excessively

Data collisions 
are occurring 
because of a 
high volume of 
traffic on the 
network.

Make sure connected 
devices are not 
operating in full-
duplex mode; they 
must operate in half-
duplex mode. 

Segment the network 
with an Ethernet 
switch.

Cables used to 
connect to the 
network are 
defective or of 
the wrong type.

Verify that the cable is 
of the correct type. See 
“Communication 
cables” on page 4  for 
more information.

Link/
Traffic

Off

(even with 
a cable 
attached) 

Successful link 
is not being 
detected by the 
port.

Verify that the hub and 
the connected device 
are powered.

Verify that the cable is 
of the correct type. See 
“Communication 
cables” on page 4  for 
more information.

Inspect cables for 
damage, cable pairs to 
see if they are wired 
correctly, and 
connectors to see if 
they are loose.