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18 C1644M-B (6/06)
Optic Fault LED - Receiver
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.
Optical dB losses in the
fiber optic installation
exceed the optical power
budget specification stated
in the
Specifications
section.
Check for problems with
the fiber optic installation,
for example, excessive dB
losses in connectors, splices,
patch panels, cables,
and so on.
Optical dB losses in the
fiber optic installation meet
the optical power budget
specification stated in the
Specifications
section;
however, the receiver may
be defective.
Contact Product Support.
Table A.
Troubleshooting with Front-Panel Indicators
(Continued)
Indicator Color Meaning Possible Cause Corrective Action