Enterasys Networks BL-89420ENT User Manual

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Troubleshooting

The Mid-Span Power Hub operates but one 
of the powered devices does not work.

Verify that you are using a standard UTP Cat. 5 
cable, including all eight wires (four pairs.) Try to 
move the same load into a different port on the same 
hub. If it works, there is probably a faulty port or bad 
RJ45 port connection. If possible, try to connect the 
load device into a different hub.

Try using a different Ethernet cable. If it works, there 
is probably a faulty connection over the long cable, 
or a bad RJ45 connection.

Product Consideration:
BL-89500ENT, BL-89400ENT, BL-89700ENT Series
If the “fuse blown” light is on or flashing, replace fuse 
F2 with a 0.5 A rated fuse.

BL-89600ENT Series
If the “fuse blown” light is on or flashing, replace fuse 
F4 with a 0.5 A rated fuse.

The Mid-Span Power Hub operates and the 
load device works, but there is no data link.

Verify that the indicator for the port is “on.” Verify 
that the Mid-Span Power Hub is connected to the 
Ethernet network with a good connection. 

Verify that the Ethernet cable is Category 5 or 
greater, and is less than 100 meters in length from 
the Ethernet source to the load. 

Try to connect a different device over the same port. 
If it works and a link is established, there is probably 
a faulty data link in the load. 

Try to reconnect the load into a different output port 
(remember to move the input port accordingly). If it 
works, there is probably a faulty output or input port 
in the Mid-Span Power Hub or a bad RJ45 
connection. 

The Mid-Span Power Hub operates but one 
of the ports is powering a load without 
turning the “Power" indicator on. 

Move the load into a different output port. If the 
indicator turns “on,” there is a fault in the previous 
output port.