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Chapter 4 Troubleshooting
This chapter introduces how to locate and analyze common faults.
LED Problems and Countermeasures
Table 8 POWER/FAN FAULT LED
Problem Countermeasures
The POWER LED doesn’t light up Ensure that the power cable is properly connected to the
FR8000-OLS power terminal.
The FAULT LED is lit up It is possible that an abnormality was detected within a
component such as the power supply or fan during self-
diagnosis at startup. Please contact the store or dealer
from whom you made your purchase.
The FAN LED is lit up It is probable that a FAN error was detected during the
self-test at start up. Contact the dealer or sales
representative.
Table 9 Management Port LED
Problem Countermeasures
LINK LED does not light up, even if
after connecting a twisted pair cable
Examine the twisted-pair cable for problems.
Confirm whether the connected device is functioning
properly.
Examine the modular jack (RJ-45) connection fro
problem.
If the connected device is an NIC or hub cascade
port, ensure that the twisted-pair cable has a cross-
over specification. Alternatively, if the connection
partner is a hub MDI-X port, ensure that the
twisted-pair cable has a straight-through
specification.
Ensure that the FR8000-OLS communication speed
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