Alcatel-Lucent 9500 MXC User Manual page 742

Additional Information
Modulator Failure
Probable Cause
Recommended Actions
Additional Information
Demodulator Failure (RAC)
Probable Cause
Recommended Actions
Vol. VI-B-16
• If there are no other alarms, reboot the node (power-off, pause, power on). If the
alarm remains, replace the RAC.
• If there are other alarms which indicate a general loss of communications, an
NCC problem is indicated. Reboot the node, and if the alarms remain, replace
the NCC.
This alarm is only checked at power-on, reconfiguration, or software reload. Loss
of communications to the clock generator means its configuration cannot be
loaded.
No communications with the modulator. This is a critical alarm.
Equipment malfunction.
Check Modulator Not Locked alarm.
• If alarmed, replace the RAC.
• If not alarmed, Detected Tx Power in the CT Performance screen is normal, and
there are no remote radio alarms, the failure may not be critical (traffic
affecting). Withdraw the RAC from its backplane, pause, and re-insert. If the
alarm persists, replace the RAC.
Normally a modulator failure will result in a Modulator Not Locked alarm, which
in turn will mute the Tx. Tx muting can be checked in the CT Performance
screen.
No communications with the demodulator. This is a critical alarm.
Equipment or process malfunction.
Check for other alarms:
Alcatel-Lucent