User's Manual

Table Of Contents
Module Front Panel LED Indicators and Connectors
FEB 2005 1X SC 4812T Lite BTS Optimization/ATP 6-31
PRELIMINARY
Module Status Indicators
Each of the non-passive Plug-in Cards/Modules has a bi-color (green and
red) Status Indicator LED located on the card/module Front Panel. The
LED is labeled PWR/ALM. If both colors are turned on, the indicator
appears yellow.
Each plug-in card/module, except for the Fan Module, has its own Alarm
(Fault) Detection Circuitry that controls the state of the PWR/ALM
LED.
The Fan TACH Signal of each Fan Module is monitored by the AMR
Card. Based on the status of this signal, the AMR controls the state of
the PWR/ALM LED on the Fan Module.
Module LED Status (except
GLI3, CSM, BBX, MCC)
PWR/ALM LED
Table 6-33 describes the states of the Card/Module Status Indicator
LEDs.
Table 6-33: Card/Module PWR/ALM LED States
LED State Device Status
Solid GREEN NORMAL (Fault–Free) Mode
No alarm present.
Solid RED Alarm (Fault) Mode due to electrical or hardware
failure.
An alarm is being reported.
Note that an Alarm (Fault) Indication may or may not be due to a
complete card/module failure and normal service may or may not be
reduced or interrupted.
Power Supply Module LED
Status Combinations
The Power Supply Module (PWR CNVTR) has its own Alarm (Fault)
Detection Circuitry that controls the state of the PWR/ALM LED.
PWR/ALM LED
Table 6-34 describes the states of the bi-color Status Indicator LED.
Table 6-34: Card/Module PWR/ALM LED States
LED State Device Status
Solid GREEN NORMAL (Fault–Free) Mode
No alarm present.
Solid RED Alarm (Fault) Mode due to electrical or hardware
failure.
An alarm is being reported.
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