User's Manual Part 2

Fan Module

9-4 1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU MAY 2004

PRELIMINARY

Introduction

The fan module is located above the CCP2 Shelf at the front of the

Compact BTS.

The fan mdoule is a modular device allowing easy replacement. The

electrical connection for DC power is made through a connector at the

rear of the module. The connector is automatically engaged when the fan

module is inserted and seated.

System Impact/Considerations

At room temperature, the fan module is very quiet.

Operation can be verified by holding a hand over the

exhaust grill on top and feeling for air movement.

NOTE

Performing this replacement procedure will not cause

downtime or interrupt call processing, but it will trigger

alarms.

IMPORTANT

If a fan begins to degrade or fails, an alarm signal will be sent to the

Clock Synchronization Alarms card in the CCP2 Shelf.

Required Items

Documents

None.

Tools

None.

Replacement Units

For –48 VDC – One fan module (STLN4696)

For +27 VDC – One fan module (STLN6210)

Prerequisite

Coordinate this repair task with the OMC–R operator.

IMPORTANT

Contact the OMC–R operator before performing the replacement

procedure. Tell the operator that the fan module will be replaced and that

alarms can be expected.