User Guide

Table Of Contents

This section describes the process and precautions for powering on and powering off an AAU.

4 Replacing an AAU

This section describes how to replace a faulty AAU. Replacing an AAU interrupts all the services

carried by the AAU and causes alarms.

5 Replacing the Optical Module

You must disconnect the fiber optic cable from an optical module before replacing the optical

module. Disconnecting the fiber optic cable interrupts transmission of CPRI signals.

Conventions

Symbol Conventions

The symbols that may be found in this document are defined as follows.

Symbol Description

Indicates an imminently hazardous situation which, if not

avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not

avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not

avoided, may result in minor or moderate injury.

Indicates a potentially hazardous situation which, if not

avoided, could result in equipment damage, data loss,

performance deterioration, or unanticipated results.

NOTICE is used to address practices not related to personal

injury.

Calls attention to important information, best practices and

tips.

NOTE is used to address information not related to personal

injury, equipment damage, and environment deterioration.

General Conventions

The general conventions that may be found in this document are defined as follows.

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files, directories, folders, and users are in

boldface. For example, log in as user root.

AAU3940

Hardware Maintenance Guide About This Document

Issue 01 (2015-01-15) Huawei Proprietary and Confidential

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