3Com 3CNJPSE24 User Manual page 33

Appendix C — Troubleshooting
The end device
operates, but
there is no data
link
(continued).
One of the ports
is powering an
end device
without turning
the Port LED on.
Is it safe to keep
the Ethernet
Power Supply
running while
the "Power Not
Active" port LED
is orange?
C-5 Ethernet Power Supply User s Guide
•
Connect a different end device to the
same port. If this works and the link
is established, there is probably a
faulty data link in the end device.
•
Re-connect the end device to a
different "Data & Power" port and
remember to move the "Data" port of
the switch or hub accordingly. If this
works, there is probably a faulty "Data
& Power & Power" or "Data" port in
the Ethernet Power Supply or a bad
RJ-45 connection
Re-connect the end device to a different
"Data & Power" port. If the LED turns on,
there is a fault in the previous output port
(probably a faulty LED).
Yes, this condition is safe.