Red Fault Led Flashing Fast; Red Fault Led On Solid - Cisco GS7000 Installation And Configuration Manual

Check which AC lines and PS modules are shown as installed in your

configuration. The configuration settings must match what is physically
installed.
Check the power supply measurements for out-of-range values.


Red FAULT LED Flashing Fast

If the FAULT LED is flashing fast, one or both of the secondary receivers is being
turned on, i.e., redundancy is in use.
Complete the following steps to verify that the redundancy switching is correct in
1x/2x Fwd Seg forward segmentation mode.
1 Connect a laptop computer running the ViewPort software to the local control
interface USB port on the LCM. See Configuring the LCM Using the PC-based
ViewPort Software (on page 21) for instructions.
2 Check the settings of the AB switches (Preferred A, Preferred B, Forced A, or
Forced B). If not set correctly, reset as required.
3 Check the optical power levels of the receivers against their set thresholds. This
allows you to see which primary receivers have failed and had their
corresponding secondary receivers turned on. Verify the status of the
corresponding receivers.

Red FAULT LED On Solid

If the FAULT LED is on (solid RED), redundancy has failed. One or both of the
secondary receivers could not be turned on and operated when their corresponding
primary receiver failed.
To troubleshoot this condition, use the same procedure as in Red FAULT LED
Flashing Fast, but look for the failure of both primary and secondary receivers.
WARNING:
Be sure that your node supports the forward segmentation of your status
monitor.
OL-29937-01
Local Control Module Troubleshooting
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