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C2622M (2/07) 17
Troubleshooting
LED indicators on the front and rear panels of the FX82051 module allow you to monitor operational
status:
• LED indicators on the front panel (refer to Figure 2) allow you to monitor operating power,
100BASE-FX port status, and optic signal/laser status. Refer to Table B for information about
the front-panel indicators and associated troubleshooting guidelines.
• LED indicators on the rear panel (refer to Figure 3) allow you to monitor RJ-45 10BASE-T/
100BASE-TX port status. Refer to Table C for information about the rear-panel indicators and
associated troubleshooting guidelines.
Table B. Troubleshooting with Front-Panel Indicators
Indicator Color Meaning Possible Cause Corrective Action
Power LED (Pelco badge)
Blue Power is being
applied to the
module.
– No action required.
Not lit Power is not being
applied to the
module.
Power connection is faulty. Check power connection.
If module is rack mounted,
reseat module or power
supply as necessary.
Power supply has failed. Replace power supply.
Loss of power occurs due to
tripped circuit breakers,
blown fuses, or faulty
electrical service.
Check circuit breakers, fuses,
or electrical service as
necessary.
100BASE-FX Status LED ( )
Green A fiber link is
established.
— No action required.
Flashing green Data activity is
occurring on the fiber
link.
— No action required.
Red Far end fault indica-
tion (FEFI). The
optical signal
transmitted from this
port is not detected
by the remote link
partner.
Defective fiber transmit port
on local module
Replace local module.
Laser fault on local module
(Optic Fault LED on local
module flashes red).
Refer to the Optic Fault LED
section in this table.
Defective fiber receive port
on remote module
Replace remote module.
NOTE: The Optic Fault LED on the remote module is red. Refer to the Optic Fault
LED section in this table for additional information.
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