Huawei Rru Owner's manual

RRU

Hardware Maintenance Guide

Issue

Date

2015-03-23

HUAWEI TECHNOLOGIES CO., LTD.

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

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

RRU

Hardware Maintenance Guide

About This Document

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

About This Document

Purpose

This document describes routine maintenance procedures for an RRU such as equipment

maintenance and power-on and power-off operations. It also explains how to replace the RRU

and optical modules.

The RRUs involved in this document are the RRUs in SingleRAN, GSM, UMTS, LTE FDD,

and LTE TDD modes.

If LTE is used rather than LTE FDD or LTE TDD in this document, the LTE mode can be the LTE FDD

mode or LTE TDD mode. If eNodeB is used rather than eNodeB FDD or eNodeB TDD in this document,

the eNodeB can be an eNodeB FDD or a eNodeB TDD.

Product Versions

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

Product Name

Solution Version

Product Version

DBS3900

SRAN6.0 and later versions

V100R004C00 and later

versions

GBSS13.0 and later versions

V100R013C00 and later

versions

RAN13.0 and later versions

V200R013C00 and later

versions

eRAN2.1 and later versions

V100R003C00 and later

versions

eRAN2.1 TDD and later

versions

V100R003C00 and later

versions

Intended Audience

This document is intended for:

System engineers

Site maintenance personnel

RRU

Hardware Maintenance Guide

About This Document

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

iii

Organization

1 Changes in RRU Hardware Maintenance Guide

This chapter describes the changes in RRU Hardware Maintenance Guide.

2 Preventative Maintenance Items for an RRU

Preventative maintenance improves the reliability of the RRU. You are advised to perform

scheduled maintenance yearly.

3 Powering On and Off an RRU

After an RRU is powered on, check the status of RRU indicators and voltage. Before the RRU

is powered off, follow the normal power-off or emergent power-off procedure as required.

4 Replacing an RRU

This chapter describes the procedures and precautions for replacing a common RRU,

replacing a blade RRU, and replacing a non-blade RRU with a blade RRU by reusing

mounting kits. Replacing an RRU interrupts all the services carried by the RRU and causes

alarms.

5 Replacing an Optical Module

An optical module implements optical-electrical conversion, enabling optical transmission

between an RRU and other devices. You must disconnect optical fibers from an optical

module before replacing the optical module. Disconnecting the optical fibers interrupts the

transmission of CPRI signals.

6 Adding RRUs

This chapter describes the procedure and precautions for adding RRUs with different exteriors

on a pole.

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.

RRU

Hardware Maintenance Guide

About This Document

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

Symbol

Description

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

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.

Italic

Book titles are in italics.

Courier New

Terminal display is in Courier New.

Command Conventions

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.

RRU

Hardware Maintenance Guide

About This Document

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

GUI Conventions

Convention

Description

Boldface

Buttons, menus, parameters, tabs, windows, 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 Operation

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, Ameans

the two keys should be pressed in turn.

Mouse Operation

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.

RRU

Hardware Maintenance Guide

Contents

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

Contents

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

1 Changes in RRU Hardware Maintenance Guide....................................................................1

2 Preventative Maintenance Items for an RRU ..........................................................................8

3 Powering On and Off an RRU..................................................................................................10

3.1 Powering On an RRU .................................................................................................................................................10

3.2 Powering Off an RRU................................................................................................................................................. 11

4 Replacing an RRU.......................................................................................................................13

4.1 Preparations Before Replacement...............................................................................................................................13

4.2 Replacing an RRU Using Assembled Mounting Kits.................................................................................................15

4.2.1 Replacing an RRU Using a Mounting Kit for a Common RRU..............................................................................15

4.2.2 Replacing an RRU Using a Mounting Kit for a Blade RRU ...................................................................................20

4.3 Replacing an RRU Using Non-assembled Mounting Kits..........................................................................................23

4.4 Replacing a Non-Blade RRU with a Blade RRU .......................................................................................................27

4.5 Replacing Blade RRUs in the ICR and Adding Blade RRUs to the ICR....................................................................33

4.6 Operations After Replacement....................................................................................................................................38

5 Replacing an Optical Module...................................................................................................40

6 Adding RRUs...............................................................................................................................43

RRU

Hardware Maintenance Guide

1 Changes in RRU Hardware Maintenance Guide

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

1 Changes in RRU Hardware Maintenance

Guide

This chapter describes the changes in RRU Hardware Maintenance Guide.

16 (2015-03-23)

This is the sixteenth commercial release.

Compared with issue 15 (2015-02-10), this issue does not include any new information.

Compared with issue 15 (2015-02-10), this issue includes the following change:

Topic

Change Description

3.2 Powering Off an RRU

Added the procedure of checking whether

the power-off operation succeeds.

4.2.1 Replacing an RRU Using a Mounting

Kit for a Common RRU

4.2.2 Replacing an RRU Using a Mounting

Kit for a Blade RRU

Added the procedure and caution.

Compared with issue 15 (2015-02-10), no information is deleted from this issue.

15 (2015-02-10)

This is the fifteenth commercial release.

Compared with issue 14 (2015-01-30), this issue does not include any new information.

Compared with issue 14 (2015-01-30), this issue includes the following change:

Topic

Change Description

4.4 Replacing a Non-Blade RRU with a

Blade RRU

Modified the context and procedure of

replacing a Non-Blade RRU with a Blade

RRU.

RRU

Hardware Maintenance Guide

1 Changes in RRU Hardware Maintenance Guide

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

Compared with issue 14 (2015-01-30), no information is deleted from this issue.

14 (2015-01-30)

This is the fourteenth commercial release.

Compared with issue 13 (2014-11-10), this issue does not include any new information.

Compared with issue 13 (2014-11-10), this issue includes the following change:

Topic

Change Description

4.4 Replacing a Non-Blade RRU with a

Blade RRU

Modified the context and procedure of

replacing a Non-Blade RRU with a Blade

RRU.

Compared with issue 13 (2014-11-10), no information is deleted from this issue.

13 (2014-11-10)

This is the thirteen commercial release.

Compared with issue 12 (2014-10-20), this issue does not include any new information.

Compared with issue 12 (2014-10-20), this issue includes the following change:

Topic

Change Description

4.4 Replacing a Non-Blade RRU with a

Blade RRU

Modified the context and procedure of

replacing a Non-Blade RRU with a Blade

RRU.

Compared with issue 12 (2014-10-20), no information is deleted from this issue.

12 (2014-10-20)

This is the twelfth commercial release.

Compared with issue 11 (2014-08-20), this issue does not include any new information.

Compared with issue 11 (2014-08-20), this issue includes the following change:

Topic

Change Description

4.4 Replacing a Non-Blade RRU with a

Blade RRU

Added the figure of waterproofing a

connector of the alarm cable.

Compared with issue 11 (2014-08-20), no information is deleted from this issue.

11 (2014-08-20)

This is the eleventh commercial release.

RRU

Hardware Maintenance Guide

1 Changes in RRU Hardware Maintenance Guide

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

Compared with issue 10 (2014-01-20), this issue does not include any new information.

Compared with issue 10 (2014-01-20), this issue includes the following change:

Topic

Change Description

4.5 Replacing Blade RRUs in the ICR and

Adding Blade RRUs to the ICR

Added the description that the 18 L blade

RRU does not support the indoor

centralized installation.

Compared with issue 10 (2014-01-20), no information is deleted from this issue.

10 (2014-01-20)

This is the tenth commercial release.

Compared with issue 09 (2013-09-26), this issue does not include any new information.

Compared with issue 09 (2013-09-26), this issue includes the following change:

Topic

Change Description

4.1 Preparations Before Replacement

Added the information about U2000.

4.6 Operations After Replacement

6 Adding RRUs

Compared with issue 09 (2013-09-26), no information is deleted from this issue.

09 (2013-09-26)

This is the ninth commercial release.

Compared with issue 08 (2013-07-30), this issue includes the following new information:

4.5 Replacing Blade RRUs in the ICR andAdding Blade RRUs to the ICR.

Compared with issue 08 (2013-07-30), this issue includes the following change:

Topic

Change Description

5 Replacing an Optical Module

Optimized the description of the function

that the optical modules are hot-swappable.

Compared with issue 08 (2013-07-30), no information is deleted from this issue.

08 (2013-07-30)

This is the eighth commercial release.

Compared with issue 07 (2013-05-30), this issue includes the following new information:

RRU

Hardware Maintenance Guide

1 Changes in RRU Hardware Maintenance Guide

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

4.1 Preparations Before Replacement

4.4 Replacing a Non-Blade RRU with a Blade RRU

4.6 OperationsAfter Replacement

6 Adding RRUs

Compared with issue 07 (2013-05-30), this issue includes the following changes:

Topic

Change Description

4.2.1 Replacing an RRU Using a Mounting

Kit for a Common RRU

Added the scenario where attachment plate

B for a common RRU is installed together

with mounting kit A for a common RRU

and the figure showing the scenario.

4.2.1 Replacing an RRU Using a Mounting

Kit for a Common RRU

Changed preparations before replacement to

4.1 Preparations Before Replacement and

operations after replacement to 4.6

Operations After Replacement.

4.2.2 Replacing an RRU Using a Mounting

Kit for a Blade RRU

Compared with issue 07 (2013-05-30), no information is deleted from this issue.

07 (2013-05-30)

This is the seventh commercial release.

Compared with issue 06 (2013-04-28), this issue includes the following change:

Topic

Change Description

5 Replacing an Optical Module

Changed the description "An optical module

is hot-swappable if the CPRI port is not

changed." to "An optical module or a CPRI

fiber optic cable cannot be inserted into or

removed from this CPRI port when the

power supply is connected."

Compared with issue 06 (2013-04-28), no information is deleted from or included in this

issue.

06 (2013-04-28)

This is the sixth commercial release.

Compared with issue 05 (2012-12-30), this issue includes the following changes:

Topic

Change Description

4.2.1 Replacing an RRU Using a Mounting

Kit for a Common RRU

Added the description of replacing an RRU

using a mounting kit for a common RRU.

5 Replacing an Optical Module

Added the steps of powering on and off an

RRU

Hardware Maintenance Guide

1 Changes in RRU Hardware Maintenance Guide

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

Topic

Change Description

RRU.

Compared with issue 05 (2012-12-30), no information is deleted from or included in this

issue.

05 (2012-12-30)

This is the fifth commercial release.

Compared with issue 04 (2012-09-15), this issue includes the following new information:

4.2.2 Replacing an RRU Using a Mounting Kit for a Blade RRU

Compared with issue 04 (2012-09-15), this issue includes the following changes:

Topic

Change Description

3.1 Powering On an RRU

Optimized the contents in these sections.

3.2 Powering Off an RRU

4.2.1 Replacing an RRU Using a Mounting

Kit for a Common RRU

Modified the title and added the information

of RRU mounting kits.

Compared with issue 04 (2012-09-15), no information is deleted from this issue.

04 (2012-09-15)

This is the fourth commercial release.

Compared with issue 03 (2012-07-20), this issue does not include any new information.

Compared with issue 03 (2012-07-20), this issue includes the following change:

Topic

Change Description

4.2.1 Replacing an RRU Using a Mounting

Kit for a Common RRU

Optimized the contents in these sections.

5 Replacing an Optical Module

Compared with issue 03 (2012-07-20), no information is deleted from this issue.

03 (2012-07-20)

This is the third commercial release.

Compared with issue 02 (2012-02-10), this issue does not include any new information.

Compared with issue 02 (2012-02-10), this issue includes the following change:

RRU

Hardware Maintenance Guide

1 Changes in RRU Hardware Maintenance Guide

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

Topic

Change Description

4.2.1 Replacing an RRU Using a Mounting

Kit for a Common RRU

Optimized the contents in this section.

Compared with issue 02 (2012-02-10), no information is deleted from this issue.

02 (2012-02-10)

This is the second commercial release.

Compared with issue 01 (2011-11-30), this issue does not include any new information.

Compared with issue 01 (2011-11-30), this issue includes the following change:

Topic

Change Description

5 Replacing an Optical Module

Added the steps of querying the type of a

faulty optical module.

Compared with issue 01 (2011-11-30), no information is deleted from this issue.

01 (2011-11-30)

This is the first commercial release.

This release incorporates the following documents to RRU Hardware Maintenance Guide.

RRU3201 Hardware Maintenance Guide

RRU3203 Hardware Maintenance Guide

RRU3220 Hardware Maintenance Guide

RRU3222 Hardware Maintenance Guide

RRU3808 Hardware Maintenance Guide

RRU3221 Hardware Maintenance Guide

RRU3240 Hardware Maintenance Guide

RRU3004 (DC) Hardware Maintenance Guide

RRU3004 (AC) Hardware Maintenance Guide

RRU3008 (AC) V1 Hardware Maintenance Guide

RRU3008 (AC) V2 Hardware Maintenance Guide

RRU3008 (DC) V1 Hardware Maintenance Guide

RRU3008 (DC) V2 Hardware Maintenance Guide

RRU3908 (AC) V1 Hardware Maintenance Guide

RRU3908 (AC) V2 Hardware Maintenance Guide

RRU3908 (DC) V1 Hardware Maintenance Guide

RRU3908 (DC) V2 Hardware Maintenance Guide

RRU3804&RRU3901E&3806 Hardware Maintenance Guide

RRU3804&RRU3901E&3806 (AC) Hardware Maintenance Guide

RRU

Hardware Maintenance Guide

1 Changes in RRU Hardware Maintenance Guide

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

RRU3805 Hardware Maintenance Guide

RRU3808 Hardware Maintenance Guide

RRU3828 Hardware Maintenance Guide

RRU3928 Hardware Maintenance Guide

RRU3929 Hardware Maintenance Guide

RRU

Hardware Maintenance Guide

2 Preventative Maintenance Items for an RRU

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

2 Preventative Maintenance Items for an

RRU

Preventative maintenance improves the reliability of the RRU. You are advised to perform

scheduled maintenance yearly.

When working at heights, the maintenance personnel need to exercise caution to avoid falling

of objects, which may cause injuries or death. In addition, the maintenance personnel must

always wear helmets in the working area and avoid dangerous areas.

The items in the following checklist are not mandatory but strongly recommended. Table 2-1

lists the preventative maintenance items for an RRU.

Table 2-1 Preventative maintenance items for an RRU

No.

Item

All RRUs are properly installed and in good condition.

The cable seals at the entry points of the cabinet are in good condition.

All ground cables are properly grounded.

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

All RF cable connectors are sealed properly.

All RF cable conduits are in good condition.

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

All power cable connectors are in good condition.

All power cable conduits are in good condition.

All shield layers of power cables are in good condition.

All power cables are in good condition.

RRU

Hardware Maintenance Guide

2 Preventative Maintenance Items for an RRU

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

No.

Item

All CPRI optical fibers are free from wear, cuts, cracks, or other damage.

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

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

All RET cable (optional) connectors are sealed properly.

All alarm cables (optional) are installed and free from any damage.

All monitoring cables (optional) are installed and free from any damage.

If any of the requirements in the checklist is not met, perform the following corrective actions.

1. Tighten all connections.

2. Report the problems to the supervisor so that the qualified engineers can be assigned to

maintain the parts on the tower.

RRU

Hardware Maintenance Guide

3 Powering On and Off an RRU

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

3 Powering On and Off an RRU

About This Chapter

After an RRU is powered on, check the status of RRU indicators and voltage. Before the RRU

is powered off, follow the normal power-off or emergent power-off procedure as required.

3.1 Powering On an RRU

This section describes how to power on an RRU. Observe the indicators on the RRU to check

the running status.

3.2 Powering Off an RRU

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

need to perform a normal power-off in scenarios such as an equipment swap or foreseeable

regional blackout, and you need to perform an emergency power-off in emergencies such as a

fire, smoke, or water damage in the equipment room.

3.1 Powering On an RRU

This section describes how to power on an RRU. Observe the indicators on the RRU to check

the running status.

Prerequisites

The RRU hardware is installed and RRU cable connections are secure.

The input voltage of a DC RRU ranges from -36 V DC to -57 V DC.

The input voltage of anAC RRU ranges from 100 VAC to 240 VAC.

Context

After unpacking an RRU, you must power on it within 24 hours. If you power off the RRU

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

RRU

Hardware Maintenance Guide

3 Powering On and Off an RRU

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

Procedure

Step 1 On the power epuipment for the RRU, set the corresponding circuit breaker to ON or insert a

corresponding EPC connector.

Do not look into the optical module without eye protection after the RRU is powered on.

Step 2 Wait 3 to 5 minutes, and then check the status of the indicators on the RRU. For details, see

section "RRU Indicators" in the hardware description of the corresponding RRU.

If RRUs are cascaded, check the status of all RRU indicators.

Step 3 Take corresponding actions based on the status of the indicators.

If...

Then...

The RRU is working properly

End the power-on check task.

The RRU is faulty

On the power equipment for the RRU, set

the corresponding circuit breaker to OFF or

remove the corresponding EPC connector.

Rectify the fault, and then go to Step 1.

----End

3.2 Powering Off an RRU

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

need to perform a normal power-off in scenarios such as an equipment swap or foreseeable

regional blackout, and you need to perform an emergency power-off in emergencies such as a

fire, smoke, or water damage in the equipment room.

Procedure

Normal power-off

If RRUs are cascaded, services carried on the lower-level RRU may be interrupted during the

replacement of the upper-level RRU.

1. On the power equipment for the RRU, set the corresponding circuit breaker to OFF or

remove the corresponding EPC connector.

Emergency power-off

RRU

Hardware Maintenance Guide

3 Powering On and Off an RRU

Issue 16 (2015-03-23)

Huawei Proprietary and Confidential

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

power-off in normal cases.

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

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

breaker to OFF or remove the corresponding EPC connector.

Optional: Perform the following operations to check whether the power-off operation

succeeds forAC RRUs:

1. Use an electroprobe or multimeter to check whether the equipment shell is energized. If

it is, the power-off operation fails. In this case, perform the power-off operation again.

2. Use a multimeter to check whether the equipment port voltage is 0. If it is not, the

equipment fails to be powered off. In this case, perform the power-off operation again.

----End

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