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C1649M (1/06) 15
Optic Fault LED
Green The optical signal is
being received from
the transmitter.
– No action required.
Red The optical signal is
not being received
from the transmitter.
Transmitter is not
powered on.
Check power connections.
Replace power supply if
necessary.
Fiber optic cable is not
connected.
Check fiber optic
connections.
Fiber optic cable
connectors are dirty or
are damaged.
Clean, polish, or replace fiber
optic cable connectors as
necessary.
Fiber optic cable is
defective.
Replace cable.
A problem exists with
the optical power
budget.
Verify that losses in fiber
optic cable do not exceed the
optical power budget
specification of the fiber
optic link. If the losses do
exceed the optical power
budget, contact Product
Support.
Table A. Troubleshooting with Front-Panel Indicators (Continued)
Indicator Color Meaning Possible Cause Corrective Action