Troubleshooting Core Type TDM Channel Modules
LED
Name
LED Colors Potential Cause Solution for Troubleshooting
N Yellow Auto shutdown (Temp) 1 Verify that the equipment operating
environment for the corresponding
shelf meets specifications, and that
the air filter is clean and
unobstructed.
2 Verify the fan units in this shelf are
operating correctly.
3 Verify the module placement and the
equipment within this shelf
conforms to the product's
engineering guidelines.
4 If the condition persists, replace the
module.
Optical Input Power out of range 1 Measure the optical input power on
the receiver connector.
2 Compare the measured value with
the module network port input
specification.
3 Adjust the optical input power (i.e.,
install the appropriate attenuators) to
fulfill the Optical Input Power
requirements.
Loss of frame - No frame sync
detected
Check optical power measurements.
Refer to the procedure, “Finding Your
Problem - Follow the Light” on p.53 in
this document.
Loss of input power - Power non-
existing or below the defined
minimum level is detected at the
input.
Refer to “Finding Your Problem - Follow
the Light” on p.53 in this document.
Loss of output power - Power non-
existing or below the defined
minimum level is detected at the
output. Normally a consequence of
loss of optical input power. Also
may be due to failure/degeneration
of an internal component or splice.
Trace identifier mismatch
(ODU-TIM/ITU-TIM)
Check the values of expected and
received trace on the affected interface.
Also verify the trace identifier sent to the
affected interface.
Table 24: LED Status of the 10TCC-PCTN-10G+100GB/C
142 FSP 3000R7 Maintenance and Troubleshooting Manual - Product Release 16.2 - Document Issue A
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