User's Manual Part 3

Module Front Panel LED Indicators and Connectors

Apr 2001

6-21

SC4812ET BTS Optimization/ATP — CDMA LMF

DRAFT

Module Status Indicators

Each of the non-passive plug-in modules has a bi-color (green & red)

LED status indicator located on the module front panel. The indicator is

labeled PWR/ALM. If both colors are turned on, the indicator is yellow.

Each plug-in 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.

Based on the status of this signal the AMR controls the state of the

PWR/ALM LED on the fan module.

LED Status Combinations for

All Modules (except GLI2,

CSM, BBX2, MCC24E, MCC8E)

PWR/ALM LED

The following list describes the states of the module status indicator.

 Solid GREEN – module operating in a normal (fault free) condition.

 Solid RED – module is operating in a fault (alarm) condition due to

electrical hardware failure.

Note that a fault (alarm) indication may or may not be due to a complete

module failure and normal service may or may not be reduced or

interrupted.

DC/DC Converter LED Status

Combinations

The PWR CNVTR has its own alarm (fault) detection circuitry that

controls the state of the PWR/ALM LED.

PWR/ALM LED

The following list describes the states of the bi-color LED.

 Solid GREEN – module operating in a normal (fault free) condition.

 Solid RED – module is operating in a fault (alarm) condition due to

electrical hardware problem.