Black Box®LB1350A/LB1351A
Problem | Indication | Corrective Action |
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| Check the interconnection between the |
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| Black Box®LB1350A LB1351A and the |
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| device. |
Black Box®LB1350A or | FDX LED not lit | Verify that connected device is FDX |
LB1351A not recognizing |
| capable and set to FDX properly. If HDX |
full duplex |
| then the indication is correct and you have |
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| to setup the S7 Dip switch accordingly |
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| Check the interconnection between the |
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| Black Box®LB1350A/LB1351A and the |
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| device. |
Fiber link not working | Link LED | Check that the receive fiber is properly |
| (100BaseFX) | connected to the transmit port of the |
| not lit | remote fiber device AND the transmit port |
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| to the receive port of the remote device. |
| Remote device | Change to TEST mode (S8 UP) and verify |
| reports LINK | with remote operator to establish whether |
| DOWN | incoming or outgoing paths failed |
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| Check that the fiber optic power is higher |
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| than |
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| connector at the Black Box®LB1350A |
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| /LB1351A end. |
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| Check that remote device’s receive port is |
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| properly connected to the transmit fiber |
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| optic port of the Black Box®LB1350A |
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| /LB1351A |
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| Verify FDX mode of the F/O port (S7 Down) |
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| ; reset device by S9 |
No | F/O LED OFF | Disable FEF: Dip switch # 8 in Up position |
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| (section 12 page 14) |
Improper network traffic | Runt and late | Reset the device using S9 |
| collision |
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| Check configuration (section 12 ) on the |
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| “mode setup switches”. |
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| Check that both ends of F/O link are set to |
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| same mode (Half Duplex OR Full Duplex). |
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| Check that both sides of UTP connection |
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| are in same mode (10Mbps Half duplex OR |
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| 10Mbps full duplex OR 100Mbps Half |
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| duplex OR 100Mbps full duplex). |
If the problem persists after carrying out the above procedure, do the following: replace the installed Black Box®LB1350A LB1351A,with another similar device and
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