Huawei Technologies AAU3940 Active Antenna Unit User Manual Hardware Maintenance Guide

Huawei Technologies Co.,Ltd Active Antenna Unit Hardware Maintenance Guide

UserManual.wiki >

Huawei Technologies >

AAU3940 User Manual >

HardwareMaintenanceGuide.pdf HTML Version

1. HardwareMaintenanceGuide.pdf
2. InstallationGuide.pdf
3. UserManual_safety.pdf

HardwareMaintenanceGuide.pdf

AAU3940

Hardware Maintenance Guide

Issue 01

Date 2015-01-15

HUAWEI TECHNOLOGIES CO., LTD.

No part of this document may be reproduced or transmitted in any form or by any means without prior written

consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the

customer. All or part of the products, services and features described in this document may not be within the

purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,

and recommendations in this document are provided "AS IS" without warranties, guarantees or representations

of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://www.huawei.com

Email: support@huawei.com

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

About This Document

Overview

This document describes routine maintenance for an AAU3940 such as equipment maintenance

and power-on and power-off operations. It also describes how to replace the AAU, modules in

it, and optical modules.

Product Version

The following table lists the product versions related to this document.

Product Name Solution Version Product Version

DBS3900 lSRAN10.0 and later

lRAN17.0 and later

leRAN8.0 and later

V100R010C00 and later

Intended Audience

This document is intended for:

lBase station installation personnel

lSystem engineer

lSite maintenance personnel

Organization

1 Changes in AAU3940 Hardware Maintenance Guide

This chapter describes changes in AAU3940 Hardware Maintenance Guide.

2 Routine Hardware Maintenance Items

Routine hardware maintenance for an AAU improves reliability of the AAU. You are advised

to perform routine hardware maintenance yearly.

3 Powering On and Powering Off an AAU

AAU3940

Hardware Maintenance Guide About This Document

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

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

iii

Convention Description

Italic Book titles are in italics.

Courier New Examples of information displayed on the screen are in

Courier New.

Command Conventions

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

Convention Description

Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

[ ] Items (keywords or arguments) in brackets [ ] are optional.

{ x | y | ... } Optional items are grouped in braces and separated by

vertical bars. One item is selected.

[ x | y | ... ] Optional items are grouped in brackets and separated by

vertical bars. One item is selected or no item is selected.

{ x | y | ... }*Optional items are grouped in braces and separated by

vertical bars. A minimum of one item or a maximum of all

items can be selected.

[ x | y | ... ]*Optional items are grouped in brackets and separated by

vertical bars. Several items or no item can be selected.

GUI Conventions

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

Convention Description

Boldface Buttons, menus, parameters, tabs, window, and dialog titles

are in boldface. For example, click OK.

>Multi-level menus are in boldface and separated by the ">"

signs. For example, choose File > Create > Folder.

Keyboard Operations

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

AAU3940

Hardware Maintenance Guide About This Document

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

Format Description

Key Press the key. For example, press Enter and press Tab.

Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt

+A means the three keys should be pressed concurrently.

Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A means

the two keys should be pressed in turn.

Mouse Operations

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

Action Description

Click Select and release the primary mouse button without moving

the pointer.

Double-click Press the primary mouse button twice continuously and

quickly without moving the pointer.

Drag Press and hold the primary mouse button and move the

pointer to a certain position.

AAU3940

Hardware Maintenance Guide About This Document

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

Contents

About This Document.....................................................................................................................ii

1 Changes in AAU3940 Hardware Maintenance Guide............................................................1

2 Routine Hardware Maintenance Items.....................................................................................2

3 Powering On and Powering Off an AAU.................................................................................4

3.1 Powering on an AAU.....................................................................................................................................................5

3.2 Powering off an AAU.....................................................................................................................................................6

4 Replacing an AAU.........................................................................................................................8

5 Replacing the Optical Module..................................................................................................16

AAU3940

Hardware Maintenance Guide Contents

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

1 Changes in AAU3940 Hardware

Maintenance Guide

This chapter describes changes in AAU3940 Hardware Maintenance Guide.

01 (2015-01-15)

This is the first commercial release.

Compared with issue Draft A (2014-10-30), no information is added to or deleted from this issue.

Compared with issue Draft A (2014-10-30), this issue includes the following changes.

Topic Change Description

Entire document Some figure updates caused by the structure

modification of the AAU.

Draft A (2013-10-30)

This is a draft.

AAU3940

Hardware Maintenance Guide 1 Changes in AAU3940 Hardware Maintenance Guide

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

2 Routine Hardware Maintenance Items

Routine hardware maintenance for an AAU improves reliability of the AAU. You are advised

to perform routine hardware maintenance yearly.

DANGER

While working at heights, be careful not to drop any tools, equipment, or other objects. Falling

objects may cause serious injury or death. Always wear a helmet and avoid standing in the danger

area.

The items in the following checklist are not mandatory but strongly recommended.

Table 2-1 AAU routine hardware maintenance items

No. Item

1All AAUs are intact and securely installed, with all modules in the AAUs securely

installed.

2 All RF cables are free from wear, cuts, cracks, or other damage.

3 All RF cable connectors are sealed and waterproofed properly.

4 All RF cable conduits are in good condition.

5 All power cables are free from wear, cuts, cracks, or other damage.

6 All power cable connectors are in good condition.

7 All power cable conduits are in good condition.

8 All shield layers of power cables are in good condition.

9 All power cables are sealed properly.

10 All CPRI fiber optic cables are free from wear, cuts, cracks, or other damage.

11 All screws on the cover plate of the maintenance cavity are tightened.

AAU3940

Hardware Maintenance Guide 2 Routine Hardware Maintenance Items

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

No. Item

12 All RET cables (optional) are free from wear, cuts, cracks, or other damage.

13 All RET cable (optional) connectors are sealed properly.

If any of the statements in the checklist cannot be complied with, perform the following

corrective actions:

1. Tighten all connections.

2. Report any other faults found during the checking, because further repairs on towers can

be performed only by trained and technically-qualified field engineers.

AAU3940

Hardware Maintenance Guide 2 Routine Hardware Maintenance Items

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

3 Powering On and Powering Off an AAU

About This Chapter

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

3.1 Powering on an AAU

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

3.2 Powering off an AAU

An AAU can be powered off in two ways: normal power-off and emergency power-off. You

must power off the AAU in a normal situation such as moving the equipment or anticipating a

territorial blackout. You must also power off the AAU in an emergency such as a fire, smoke,

or water damage.

AAU3940

Hardware Maintenance Guide 3 Powering On and Powering Off an AAU

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

3.1 Powering on an AAU

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

Context

DANGER

lBefore powering on a base station, check that the positive and negative wires of all power

cables are correctly connected. Any incorrect power cable connection may cause damage to

equipment or unexpected injuries of human body.

lExercise caution when performing a power-on check, which involves high voltage

operations. Direct contact with the input voltage or indirect contact with the input voltage

using a damp object may be fatal.

NOTICE

lAfter unpacking the RU, you must power on it within 24 hours. If you power off the RU for

maintenance, you must restore power to the RU within 24 hours.

lKeep a minimum of 7.35 m (24.11 ft) away from the front of the AAU after the RU is powered

on and the AAU starts working.

Process

The following figure shows the process of powering on an AAU.

AAU3940

Hardware Maintenance Guide 3 Powering On and Powering Off an AAU

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

Figure 3-1 Process of powering on an AAU

NOTE

lThe normal input voltage of an AAU is 220 V AC and should range from 200 V AC to 240 V AC.

lWhen an AAU is working properly, the RUN indicator is blinking (on for 1s and off for 1s), and the ALM

indicator is steady off. For details about indicators, see AAU3940 Hardware Description.

3.2 Powering off an AAU

An AAU can be powered off in two ways: normal power-off and emergency power-off. You

must power off the AAU in a normal situation such as moving the equipment or anticipating a

territorial blackout. You must also power off the AAU in an emergency such as a fire, smoke,

or water damage.

Procedure

lNormal power-off

1. Set the corresponding circuit breaker on the power equipment for the AAU to OFF.

lEmergency power-off

NOTICE

Emergency power-off may damage the AAU. Therefore, do not perform an emergency

power-off in normal cases.

AAU3940

Hardware Maintenance Guide 3 Powering On and Powering Off an AAU

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

1. Shut off the external input power of the power equipment for the AAU.

2. If time permits, set the corresponding circuit breaker on the power equipment for the

AAU to OFF.

----End

AAU3940

Hardware Maintenance Guide 3 Powering On and Powering Off an AAU

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

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.

Prerequisites

lThe following tools and materials are available: an ESD wrist strap or a pair of ESD gloves,

a flat-head screwdriver, a Phillips screwdriver, a torque screwdriver, a hex key, and an ESD

box or bag.

lThe new component is intact, and its hardware version is the same as that of the component

to be replaced.

Procedure

Step 1 Put on an ESD wrist strap or ESD gloves.

NOTICE

Take proper ESD protection measures, for example, put on an ESD wrist strap or ESD gloves,

to prevent electrostatic damage to the boards, modules, or electronic components.

Step 2 Instruct the U2000 administrator to block the faulty AAU by running the BLK BRD command.

Step 3 Power off the AAU. For detailed operations, see 3.2 Powering off an AAU.

Step 4 Remove cables from the faulty AAU.

1. Optional: If the AAU is installed on a pole top, remove the landscaping cover, as shown

in the following figure. Skip this step if the AAU is installed on a pole or wall.

AAU3940

Hardware Maintenance Guide 4 Replacing an AAU

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

Figure 4-1 Removing the landscaping cover from the AAU

2. Loosen the screws on the cover of the maintenance cavity, and open the cover.

3. Record cable connections on the AAU and remove all cables, including the power cable,

CPRI fiber optic cable, and PGND cable.

NOTE

lIf the AAU is installed on a pole or a wall, the PGND cable connects to the ground bolt on the

attachment plate. In this case, remove the PGND cable.

lIf the AAU is installed on a pole top, the PGND cable connects to the ground bolt on the mounting

support. In this case, do not remove the PGND cable.

4. Use an M6 inner hexagon torque screwdriver to tighten the screws on the maintenance

cavity, and close the cover.

Step 5 Remove the faulty AAU.

AAU3940

Hardware Maintenance Guide 4 Replacing an AAU

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

lIf the AAU is installed on a pole or wall, use a torque screwdriver to loosen the captive

bolts on the attachment plate and remove the AAU with both hands, as shown in Figure

4-2.

lIf the AAU is installed on a pole top, use a torque screwdriver to loosen the four bolts

securing the AAU, and remove the AAU with both hands, as shown in Figure 4-3.

Figure 4-2 Removing an AAU from a Pole or Wall

a: Pole installation scenario b: Wall mounting scenario

AAU3940

Hardware Maintenance Guide 4 Replacing an AAU

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

Figure 4-3 Removing an AAU from a Pole Top

Step 6 Install a new AAU.

lIn the pole installation or wall mounting scenario:

1. Place the attachment plate on the maintenance cavity of the AAU, and use a torque

screwdriver to tighten the screws to 7 N·m (61.95 lbf·in.), as shown in Figure 4-4.

2. Insert the attachment plate at the bottom of the AAU to the dovetail groove on the

mounting bracket, and use a torque screwdriver to tighten the captive screws to 7 N·m

(61.95 lbf·in.), as shown in Figure 4-5.

AAU3940

Hardware Maintenance Guide 4 Replacing an AAU

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

Figure 4-4 Installing the attachment plate

NOTE

The following figure shows the installation in the wall mounting scenario, installing an AAU on a pole is

the same.

AAU3940

Hardware Maintenance Guide 4 Replacing an AAU

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

Figure 4-5 Securing the AAU

lIn the pole top installation scenario:

1. Hold the AAU tightly with both hands and insert it into the mounting bracket on the

pole top, and use four M6 hexagon socket-head cap bolts to secure the AAU to 7 N·m

(61.95 lbf·in.), as shown in the following figure.

2. Install the landscaping cover.

AAU3940

Hardware Maintenance Guide 4 Replacing an AAU

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

Figure 4-6 Installing an AAU on a pole top

Step 7 Install AAU cables.

1. Open the cover for the maintenance cavity of the AAU.

2. Reconnect cables to the AAU according to the previous record, and ensure that waterproof

blocks are inserted into vacant ports.

3. Close the cover for the maintenance cavity of the AAU.

Step 8 Set the corresponding circuit breaker on the power equipment for the AAU to ON.

AAU3940

Hardware Maintenance Guide 4 Replacing an AAU

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

NOTE

The status of indicators on an AAU that works normally is as follows:

lRUN indicator: blinking

lALM indicator: steady off

lACT indicator: steady on

For details about indicators, see section "Ports and Indicators" in AAU3940 Hardware Description.

Step 9 Take off the ESD wrist strap or ESD gloves, and pack up all tools.

Step 10 Inform the remote engineer that the AAU has been replaced.

----End

Follow-up Procedure

lPlace the replaced component into an ESD box or bag. Then, place the ESD box or bag

into a foam-padded carton or the packing box of the new module.

lComplete the fault form with detailed information about the replaced component.

lContact the local Huawei office to handle the faulty component.

AAU3940

Hardware Maintenance Guide 4 Replacing an AAU

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

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.

Prerequisites

lTo confirm the type of a faulty module, perform the following steps:

–Run the DSP BTSOPTMODULE command on the BSC LMT.

–Run the DSP OPTMODULE command on the NodeB LMT.

–Run the DSP SFP command on the eNodeB LMT.

–Identify the type of the faulty module according to the values of Rate, Wavelength,

and Transmission mode in the output information of the command, and obtain a new

optical module of the same type as the faulty one. The type of a new optical module is

identified by the label on the new module. The following figure shows the label on an

optical module.

Figure 5-1 Label on an optical module

(1) Maximum rate (2) Wavelength (3) Transmission mode

lThe type and number of optical modules to be replaced are confirmed, and new optical

modules are ready.

lRequired tools and materials are available, including an ESD box or bag, and ESD gloves.

Context

lOptical modules are inserted into the RX TX CPRI0 and RX TX CPRI1 ports on an AAU.

AAU3940

Hardware Maintenance Guide 5 Replacing the Optical Module

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

lOptical modules are hot-swappable.

lIt takes about five minutes to replace an optical module on the AAU, which involves

disconnecting the fiber optic cable, removing the faulty optical module, inserting a new

optical module, reconnecting the fiber optic cable, and waiting for CPRI links to restore.

Procedure

Step 1 Put on an ESD wrist strap or a pair of ESD gloves.

NOTICE

Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD

gloves, to prevent electrostatic damage to the boards, modules, or other electronic components.

Step 2 Record the connections of the optical module and fiber optic cable.

Step 3 Press the latch on the optical connector, and then remove the connector from the faulty optical

module, as shown in the following figure.

Figure 5-2 Removing the cables

CAUTION

Do not look into the optical module without eye protection after removing the fiber optic cable

from the optical module.

Step 4 Lower the puller on the faulty optical module, and then pull the puller until the optical module

is removed from the AAU.

Step 5 Install a new optical module into the AAU according to the label on the module.

NOTE

The optical modules to be installed must match CPRI rates.

AAU3940

Hardware Maintenance Guide 5 Replacing the Optical Module

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

Step 6 Insert the optical connector into the new optical module.

Step 7 Check the transmission of CPRI signals by observing the status of CPRI0 and CPRI1 indicators.

For details about the status of the indicators, see the ports and indicators on an AAU of related

manuals of RRU hardware descriptions.

Step 8 Take off the ESD wrist strap or ESD gloves, and pack up all tools.

----End

Follow-up Procedure

lPlace the replaced component into an ESD box or bag. Then, place the ESD box or bag

into a foam-padded carton or the packing box of the new module.

lComplete the fault form with detailed information about the replaced component.

lContact the local Huawei office to handle the faulty component.

AAU3940

Hardware Maintenance Guide 5 Replacing the Optical Module

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

Huawei Technologies AAU3940 Active Antenna Unit User Manual Hardware Maintenance Guide

Huawei Technologies Co.,Ltd Active Antenna Unit Hardware Maintenance Guide

Contents

HardwareMaintenanceGuide.pdf

Navigation menu

Namespaces

Views

Navigation