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Black Box®LB1350A/LB1351A
17
Problem Indication Corrective Action
Check the interconnection between the
Black Box®LB1350A LB1351A and the
device.
Black Box®LB1350A or
LB1351A not recognizing
full duplex
FDX LED not lit Verify that connected device is FDX
capable and set to FDX properly. If HDX
then the indication is correct and you have
to setup the S7 Dip switch accordingly
Check the interconnection between the
Black Box®LB1350A/LB1351A and the
device.
Fiber link not working Link LED
(100BaseFX)
not lit
Check that the receive fiber is properly
connected to the transmit port of the
remote fiber device AND the transmit port
to the receive port of the remote device.
Remote device
reports LINK
DOWN
Change to TEST mode (S8 UP) and verify
with remote operator to establish whether
incoming or outgoing paths failed
Check that the fiber optic power is higher
than -30 dBm on the receive fiber
connector at the Black Box®LB1350A
/LB1351A end.
Check that remote device’s receive port is
properly connected to the transmit fiber
optic port of the Black Box®LB1350A
/LB1351A
Verify FDX mode of the F/O port (S7 Down)
; reset device by S9
No Link-Up after failure F/O LED OFF Disable FEF: Dip switch # 8 in Up position
(section 12 page 14)
Improper network traffic Runt and late
collision
Reset the device using S9
Check configuration (section 12 ) on the
“mode setup switches”.
Check that both ends of F/O link are set to
same mode (Half Duplex OR Full Duplex).
Check that both sides of UTP connection
are in same mode (10Mbps Half duplex OR
10Mbps full duplex OR 100Mbps Half
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 re-perform the requested setup. If that has
solved the problem, send the faulty Black Box®LB1350A/LB1351A for
repair. If the problem still persists, there is probably some sort of
general network failure. Call Black Box Technical Support (Call 724-
746-5500 ).