Northern Telecom Meridian 1 Installation And Maintenance Manual page 195

Table 42 : Alarm troubleshooting (continued)
Alarm
Alarm:50-cc
Alarm:51-cc
Alarm:53-ccuun
Alarm:56-ccuu
Meaning
All Base Stations on
card cc have
become
disconnected from
the system for at
least 1 minute.
or
Card cc , which was
restarted more than
3 minutes ago, has
no operating Base
Stations.
All 16 WTNs (or 32
WTNs for MC32
feature with package
350) on CMRC or
CMLC have been
disconnected from
the system for at
least 1 minute.
or
CMRC, CMLC, or
CMBC cc, which
was restarted more
than 3 minutes ago,
is still not operational
An internal Base
Station error has
occurred.
A TCM device ccuu
failure has occurred.
Meridian Companion Installation and Maintenance Guide
Troubleshooting Page 185 of 220
Possible causes and actions
The MDF cable from the IPE slot containing
CMRC has been disconnected. Reconnect the
cable.
Power to all Base Stations connected to the
CMRC card has been lost (RPI is defective or
disconnected). Check that the RPI is connected
or replace defective RPI.
A faceplate cable in the chain between the
CMCC and this CMRC or CMBC has been
disconnected or loosened from its connector.
Remove and replace the cable.
The CMRC or CMBC is defective. Replace the
CMRC or CMBC.
The CMRC has been disconnected from the IPE
Module slot. Reconnect the CMRC.
A faceplate cable in the chain between the CMCC
and this CMRC or CMLC has been disconnected
or loosened from its connector. Reconnect the
cable.
CMRC, CMLC, or CMBC has an internal defect.
Replace it.
Actions/causes depends on failure indicated in
the event code. See associated 30X event code
in Table 43.
There is a problem with the wiring to the device.
Reconnect the CMRC.
The power to the TCM device has been
interrupted. Reconnect the power.
The device has an internal defect. Replace it.