Enterasys BL-89451ENT, User Manual

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Mid-Span Power Unit 1-Port User’s Guide 3-1
3
Troubleshooting
Refer to Table 3-1 for a checklist of problems and recommended actions to resolve the
problem. If additional support is needed, refer to “ Getting Help ” on page x.
Table 3-1 Troubleshooting Checklist
Problem Recommended Action
Unit is plugged into the Enterasys Mid-Span
Power Unit, but main power indicator is “off.” Verify the use of a good AC cable with a good
ground connection.
Verify that the AC is “hot” and that voltage is
from 100 VAC to 264 VAC (50 Hz to 60 Hz.)
The Mid-Span Power Unit operates but one of
the powered devices does not work. Verify that you are using a standard UTP Cat. 5
or greater cable, including all 8 wires (4 pairs.)
Try using a different Ethernet cable. If it works,
there is probably a faulty connection over the
long cable, or a bad RJ45 connection.
The Mid-Span Power Unit 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 Unit 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 link is established, there is
probably a faulty data link in the load.
If possible, try to connect the load device into a
different unit. If it works, there is probably a
faulty output or input port in the Mid-Span
Power Unit or a bad RJ45 connection.