Troubleshooting An Alarm - Northern Telecom Meridian 1 Installation And Maintenance Manual

Troubleshooting an alarm

Table 42 : Alarm troubleshooting
Alarm
Alarm:10
Alarm:11
Alarm:23-xx
Meaning
All TCM devices,
including the
Administration
Terminal, have been
disconnected from
the CMCC.
The internal circuitry
has failed.
xx
Cell is out of
service because
there are no
operational radios in
that cell.
Meridian Companion Installation and Maintenance Guide
Troubleshooting Page 183 of 220
Possible causes and actions
This alarm is usually discovered after the problem
has been corrected (because the Administration
Terminal is nonfunctional while the alarm is
active). If it occurs unexpectedly
1. Verify that the 25-pair cable connector is
inserted properly.
2. If there are TCM devices connected to the
system, check all the wiring associated with
these TCM devices.
The CMCC is defective
Replace the CMCC (follow the instructions on
page 164).
This alarm occurs only at the end of System
Reevaluation. During the last step of
reevaluation, or after a system restart, as the
system was activating cell xx for use, it could not
find a radio to serve as a CSC.
Check for the presence of the Base Station in cell
xx
. If the Base Station is present and in
maintenance state, execute System
Reevaluation. If the Base Stations do not appear,
check the wiring and power. Replace the Base
Station if it is defective. After replacement,
reexecute System Reevaluation.