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5. TROUBLESHOOTING
This chapter contains information to help you solve issues. If the FST-80x is not functioning properly, make sure the
FST-80x was set up according to instructions in this manual.
The Power LED is not lit
Solution:
Check the power cable connection between power adapter and FST-80X.
Why I connect FST-80x to device with 100Base-FX interface and the 100Base-FX fiber connection fail?
Solution:
1. Please check the fiber connection between two devices is correct.
2. Please check the 100Base-FX interface from both devices run at the same full or half duplex
mode.
10/100Base-TX port link LED is lit, but the traffic is irregular
Solution:
1. Check that the attached device is not set to dedicate full duplex. Some devices use a physical or software switch
to change duplex modes. Auto-negotiation may not recognize this type of full-duplex setting.
2. Check the FST-80x DIP Switch setting and assure the same speed duplex mode setting on FST-80x and at-
tached device.
Why I change the FST-80x DIP switch setting and seems the function without any different?
Solution:
Please power off and power on the FST-80x to take effect.