MRV Communications MS 104, Руководство пользователя

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MS 104/5
ML46758, Rev. 01
June 2002
Troubleshooting
The troubleshooting procedure is given in Table 3 . Read the entries in the
column Problem until you reach the problem that applies to the MS 104/5. Then
perform the corrective action(s) appearing in the same row. If the problem
persists, note the status of all the LEDs and consult your
MRV representative.
Table 3: Startup and Operation Troubleshooting
No Problem Probable Cause Corrective Action
1 PWR LED off No line (mains) power. 1. Check power cord
connection.
2. Check line (mains) power
wall outlet.
3. Check power cord.
2 Fiberoptic port L LED off No link on fiberoptic cable. 1. Check fiberoptic cable
connections.
2. Check device at other end
of fiberoptic cable.
3. Check fiberoptic cable.
4. Clean connectors as
described in Appendix B:
Cleaning Optical
Connectors.
3 Copper port L LED off Bad STP/UTP cable connection. 1. Check electrical cable
connections.
2. Check device at other end
of electrical cable.
3. Check electrical cable.
4 Fiberoptic port
performance lower than
expected Duplexity mismatch. Ensure that the port and co-port
are set to the same duplexity.
5 Copper port performance
lower than expected Device connected to this port is
not auto-negotiating and is
operating in full-duplex mode.
Set DIP switch AUTO toggle
and 10/100 toggle associated
with the MS 104/5 port are set
to down position.
6 PRI LED off. Link to P1 SEC port active, i.e.,
SEC LED on. 1. Check fiberoptic cable
connections to the P1 PRI
ports (TX, RX).
2. Check fiberoptic cable.
3. Clean connectors as
described in Appendix B:
Cleaning Optical
Connectors.
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