Replacing An Rru - Huawei RRU3203 Hardware Maintenance Manual

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RRU3203

Hardware Maintenance Guide

A distributed base station consists of RRUs and a BBU. Replacing an RRU interrupts all the

services carried by the RRU, and alarms are generated.

Prerequisite

Procedure

Step 1 Run the BLK BRD command to block the RRU.

Step 2 Power off the RRU by referring to

Step 3 Wear ESD gloves.

l Take proper ESD protection measures, for example, wear ESD gloves, to prevent electrostatic

l Pay attention to the high temperature while replacing an RRU without housing.

Step 4 Loosen the six screws on the cover plate of the RRU cabling cavity using an M4 Phillips

screwdriver, and then open the cover plate.

Step 5 Record all the cable connections on the panel of the module to be replaced.

Issue 04 (2011-09-15)

The test UE communicates with the base station properly.

The types of faulty RRUs are confirmed as follows:

– If RRUs can be queried online, run the DSP BRDMFRINFO command on the LMT

to query the electronic labels of the RRUs.

– If RRUs cannot be queried online, the information about the RRUs can be queried offline

on the M2000. For details, see the procedure for querying inventory data in the M2000

documentation.

Tools and materials, such as ESD gloves, M4 Phillips screwdrivers, M6 Phillips

screwdrivers, waterproof tape, and PVC insulation tape, are ready.

The number and type of RRUs to be replaced are confirmed, and new RRUs are ready.

CAUTION

damage to the boards, modules, or electronic components.

Huawei Proprietary and Confidential

Replacing an RRU

3.2 Powering Off an

RRU.

4 Replacing an RRU

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