NS-280FX
: 8x SFP Slots with 2 Giga unmanaged Ethernet switch Ver.A.3
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Appendix D:
Troubleshooting
Diagnosing Switch’s Indicators
The Bridge can be easily monitored through its comprehensive panel indicators. These indicators assist in identifying
problems the Media Converter may encounter. This section describes common problems you may encounter and possible
solutions:
1. Symptom:
POWER indicator does not light up (green) after power on.
Cause:
Defective power source or power supply.
Solution:
Check the power source by using another power cord that is functioning properly. Check the power
cord with another device. If these measures fail to resolve the problem, have the unit sent back to a
qualified distributor.
2. Symptom:
Link indicator does not light up (green) after making a connection.
Cause:
Network interface (ex. a network adapter card on the attached device), network cable, or SFP
transceiver defective.
Solution:
Verify if both of the
NS-280FX (all devices) and attached device are powered on.
Be sure the Ethernet cable and fiber optics are plugged into both the switch and corresponding
device.
Verify that the proper cable type is used and its length does not exceed specified limits.
Check the cable connections for possible defects.
Replace the defective cable if necessary.
Please make sure SFP transceiver support 1.25G Serdes mode