Transition Networks
M/GE-ISW-SFP-01-PD User Guide
33668 Rev. A
http://www.transition.com/
Page 13 of 16
Troubleshooting
If the media converter fails, isolate and correct the fault by determining the answers to the following
questions and then taking the indicated action:
1
.
Is the
PWR
(power on) LED lit?
NO
• Is the RJ-45 wired to an IEEE 802.3af or 802.3at PSE product powered and enabled?
• Contact Tech Support. See
Contact Us
on page
14
.
YES
• Proceed to step 2.
2
.
Is the
TX-L/A
(copper link) LED lit?
NO
• Check the twisted-pair copper cables for proper connection. See
Connect the Twisted-Pair
Copper Cable
on page
6
.
• Contact Tech Support. See
Contact Us
on page
14
.
YES
• Proceed to step 3.
3
.
Is the
FX-L/A
(fiber link) LED lit?
NO
• Check the fiber cables for proper connection. See
Connect Fiber Cables
on page
6
.
• Verify that the fiber cables on the media converter are properly connected to the ports on the
other device.
• Verify the correct SFP is used; reseat the SFP and re-power the device to ensure the SFP
speed was registered. See “
Fiber Port Mode at Power Up
” on page
7
.
• Contact Tech Support. See
Contact Us
on page
14
.
YES
• Proceed to step 4.
4
.
Is the TX (copper receive) LED flashing?
NO
• If there is activity on the copper port, disconnect and reconnect the copper cable to reinitialize.
• Restart the workstation to restart the initialization process.
• Contact Tech Support. See
Contact Us
on page
14
.
YES
• Contact Tech Support. See
Contact Us
on page
14
.
5. Check for a duplex mode / auto-negotiation mode mismatch.
6. Make sure the Ethernet link established is not too long for effective PoE delivery.
7. Try the Ethernet switch cable diagnostics feature.
8. Check cable type (Cat 5/5e/6; single- or multi-strand), mechanical connectors, electrical noise in cable.
9. Check if nonpowered Ethernet devices can establish an Ethernet link on a port.
10. Verify that PoE and Non-PoE devices do not work on this port but work on other ports.
11. Check if the problem happens at a specific time of day or night.
12. If the problem started after the PD was working, check what changed (e.g., any hardware or software
changes).
