EDFA-S20H and EDFA-S20L Modules
LED
Name
LED
Colors
Potential Cause Solution for Troubleshooting
N Red
blinking to
off
EDFA shut down due
to temperature.
This condition occurs to avoid possible damage to the EDFA module due to excessive component temperatures.
1 Verify that the equipment operating environment for the shelf containing the module meets specifications, and that
the air filter is clean and unobstructed.
2 Verify that there are no abnormal conditions or failures of the fan units within the shelf containing the module.
3 Verify the module placement and that the surrounding equipment contained within the same shelf conform to the
product’s engineering guidelines.
4 If the issue is not resolved, replace the EDFA module.
The EDFA pumps are
shut down for laser
safety reasons, since
the output power
exceeded the
recommended range.
1 Ensure the input power to the amplifier is in the recommended range.
2 Make sure pilot signal is present and the gain is not too high.
3 If the issue is not resolved, replace the EDFAmodule.
EDFA pumps are
shut down due to an
LOS condition at the
upgrade (U) port.
Troubleshoot the LOS condition at the U port.
Table 91: LED Status of the EDFA-S20H and EDFA-S20L Modules
488 FSP 3000R7 Maintenance and Troubleshooting Manual - Product Release 16.2 - Document Issue A
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