PRRU3801 Hardware Maintenance Guide(V200_04)

8/12/2019 PRRU3801 Hardware Maintenance Guide(V200_04)

http://slidepdf.com/reader/full/prru3801-hardware-maintenance-guidev20004 1/26

pRRU3801

V200

Hardware Maintenance Guide

Issue 04

Date 2011-01-10

HUAWEI TECHNOLOGIES CO., LTD.



Copyright © Huawei Technologies Co., Ltd. 2011. All rights reserved.

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 the 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: [email protected]

Issue 04 (2011-01-10) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.

i

http://www.huawei.com/



About This Document

Purpose

This document describes the routine hardware maintenance of the pRRU3801. The maintenancetasks include power supply and grounding system. This document also describes the procedures

for replacing the components.

Product Version

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

Product Name Product Version

iDBS3900 WCDMA V200R010

V200R011

V200R012

V200R013

Intended Audience

This document is intended for:

l System engineers

l Site maintainers

Organization

1 Changes in the pRRU3801 Hardware Maintenance Guide

This describes the changes in the pRRU3801 Hardware Maintenance Guide.

2 pRRU Routine Hardware Maintenance Items

pRRU3801

Hardware Maintenance Guide About This Document



iii



This describes the items for pRRU3801 routine hardware maintenance. The maintenance items

include equipment room environment, pRRU3801 module and power supply.

3 Powering On/Off the pRRU3801

Based on the Power over Ethernet (PoE) technology, the pRRU3801 with an electrical portobtains -48 V DC power from the RHUB3808 through the CAT5 or CAT6 Ethernet cable. The

pRRU3801 with optical ports obtains -48 V DC power through the power adapter.

4 Replacing a pRRU3801

The pRRU3801 is an indoor remote radio unit that processes RF signals. Replacing the

pRRU3801 interrupts all the services carried by this pRRU3801.

5 Replacing an Optical Module

This describes how to replace an optical module. The optical module provides the interface for

optical-electrical conversion, thus enabling transmission through optical cables between the

BBU and other devices. You need to disconnect the optical cables when replacing the faulty

optical module. Therefore, services on the optical cables are disrupted during the replacement.

Conventions

Symbol Conventions

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

Symbol Description

Indicates a hazard with a high level of risk, which if not

avoided, will result in death or serious injury.

Indicates a hazard with a medium or low level of risk, which

if not avoided, could result in minor or moderate injury.

Indicates a potentially hazardous situation, which if not

avoided, could result in equipment damage, data loss,

performance degradation, or unexpected results.

Indicates a tip that may help you solve a problem or save

time.

Provides additional information to emphasize or supplement

important points of the main text.

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.

About This Document

pRRU3801


iv Huawei Proprietary and Confidential


Issue 04 (2011-01-10)




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 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.


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 byvertical 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.


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.

pRRU3801

Hardware Maintenance Guide About This Document



v



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.

About This Document

pRRU3801


vi Huawei Proprietary and Confidential


Issue 04 (2011-01-10)



Contents

About This Document...................................................................................................................iii

1 Changes in the pRRU3801 Hardware Maintenance Guide................................................1-1

2 pRRU Routine Hardware Maintenance Items......................................................................2-1

3 Powering On/Off the pRRU3801.............................................................................................3-1

4 Replacing a pRRU3801..............................................................................................................4-1

5 Replacing an Optical Module..................................................................................................5-1

pRRU3801

Hardware Maintenance Guide Contents



vii



Figures

Figure 4-1 Removing screws M4 x 12.................................................................................................................4-2

Figure 4-2 Unhooking the tabs.............................................................................................................................4-2

Figure 4-3 Removing the attachment plate from the pRRU3801.........................................................................4-3

pRRU3801

Hardware Maintenance Guide Figures



ix



Tables

Table 2-1 Routine Maintenance items for the pRRU3801 equipment.................................................................2-1

Table 2-2 Maintenance items for the power supply.............................................................................................2-2

pRRU3801

Hardware Maintenance Guide Tables



xi



1 Changes in the pRRU3801 Hardware

Maintenance Guide

This describes the changes in the pRRU3801 Hardware Maintenance Guide.

04(2011-01-10)

This is the third commercial release.

Compared with issue 03(2010-03-05), no information is added.

Compared with issue 03(2010-03-05), this issue incorporates the following changes:

Topic Change Description

About This Document The information of product version is

modified.

Compared with issue 03(2010-03-05), no information is deleted.

03(2010-03-05)

This is the second commercial release, the testing problems are solved.

02(2009-12-10)

This is the first commercial release.

01(2009-01-22)

This is the initial field trial release.

pRRU3801

Hardware Maintenance Guide 1 Changes in the pRRU3801 Hardware Maintenance Guide



1-1



2 pRRU Routine Hardware Maintenance

Items

This describes the items for pRRU3801 routine hardware maintenance. The maintenance items

include equipment room environment, pRRU3801 module and power supply.

Equipment Maintenance Items

Table 2-1 lists the routine maintenance items for the cabinet.

Table 2-1 Routine Maintenance items for the pRRU3801 equipment

Item Frequency Operation Guide Reference Standards

Appearance Monthly or quarterly

Check whether theappearance of equipment is

in good condition.

The equipment is notimpaired and the label of

the equipment is legible.

Cleanness of

appearance

Monthly or

quarterly

Check whether each

cabinet is clean.

The appearance of the

equipment is clean.

Board LEDs Monthly or

quarterly

Check whether the board

LEDs work properly.

For the LED states, refer

to LEDs on the

pRRU3801.

ESD wrist

strap

Quarterly Use one of the following

methods:

l Use the ESD wrist strap

tester.

l Measure the grounding

resistance by using the

multimeter.

If you use the ESD wrist

strap tester, it indicates

GOOD.

If you use the multimeter,

the grounding resistance

of the ESD wrist strap

ranges from 0.75

megaohms to 10

megaohms.

Maintenance items for the power supply

Table 2-2 lists the routine maintenance items for the power supply and the grounding system.

pRRU3801

Hardware Maintenance Guide 2 pRRU Routine Hardware Maintenance Items



2-1



Table 2-2 Maintenance items for the power supply

Item Frequency Operation Guide Reference Standards

Power cables Monthly or

quarterly

Check the connection of

the power cables.

The connection is safe

and reliable. The power cables are not aging.

There is no corrosion on

the connection points.

Voltage Monthly or

quarterly

Measure the voltage of

the power supply by

using a multimeter.

The voltage of the power

supply is within the

standard voltage range.

2 pRRU Routine Hardware Maintenance Items

pRRU3801


2-2 Huawei Proprietary and Confidential


Issue 04 (2011-01-10)




Based on the Power over Ethernet (PoE) technology, the pRRU3801 with an electrical port

obtains -48 V DC power from the RHUB3808 through the CAT5 or CAT6 Ethernet cable. The

pRRU3801 with optical ports obtains -48 V DC power through the power adapter.

Prerequisite

The power switch of the primary power supply to the pRRU3801 is set to OFF.

Procedure

l Power on the pRRU3801.

1. Power on the pRRU3801.

2. Check the power supply to the pRRU3801.

If... Then...

The input power voltage of

the power adapter for the

pRRU3801 with optical

ports ranges from 100 V AC

to 240 V AC.

Go to Step 3. Otherwise, replace the power supply

equipment, and then go to Step 3 until the input

power voltage meets the requirement.

The PWR LED on the

pRRU3801 with an electrical

port is steady green

Go to Step 3. Otherwise, you can infer that the

pRRU3801 with an electrical port is not properly

powered on. In this case, check the cable

connections and rectify the equipment fault, and

then go to Step 3 until the PWR LED is steady

green.

3. Check the status of the RUN LED on the pRRU3801.

If the RUNLED Is...

You can Infer that... Then...

ON There is power input, but

the board is faulty.

Shut off the power supply, rectify the

fault, and then power on the

pRRU3801 again.

pRRU3801

Hardware Maintenance Guide 3 Powering On/Off the pRRU3801



3-1



If the RUNLED Is...

You can Infer that... Then...

OFF There is no power

supply.

Shut off the power supply, and then

check the input power supply.

ON for 1s and

OFF for 1s

The pRRU3801 is

running properly.

End the task.

ON for 0.125s

and OFF for

0.125s

Software is being loaded

to the board.

Wait five minutes for the software to

be successfully loaded. If the software

is still being loaded after five minutes,

shut off the power supply. Check the

data configuration files. After the fault

is rectified, power on the pRRU3801

again.

l Power off the pRRU3801.

Disconnect the Ethernet cable to shut off the power supply to the pRRU3801 with an

electrical port.

Disconnect the input power cable for the power adapter for the pRRU3801 with optical

ports.

----End


pRRU3801




Issue 04 (2011-01-10)




The pRRU3801 is an indoor remote radio unit that processes RF signals. Replacing the

pRRU3801 interrupts all the services carried by this pRRU3801.

Prerequisite

l The hardware configuration of the faulty pRRU3801 is confirmed and the new pRRU3801

with the same configuration is prepared.

l The connection of each cable that is connected to the pRRU3801 is recorded.

l Tools such as cross screwdriver, ESD wrist strap, and socket wrench are ready.

Context

It takes about 10 minutes to replace the pRRU3801.

NOTE

The pRRU3801 can be installed on the pole, wall or ceiling. The methods of installing the pRRU3801 in

different scenarios are the same. The following part takes the replacement of the pRRU3801 installed on

a pole as an example.

Procedure

Step 1 Cut the pRRU3801 power supply.

Step 2 Disconnect all the cables from the pRRU3801 and take insulating measures on the cables.

Step 3 Remove the two screws M4 x 12 from the bottom of the pRRU3801, as shown in Figure 4-1.

pRRU3801

Hardware Maintenance Guide 4 Replacing a pRRU3801



4-1



Figure 4-1 Removing screws M4 x 12

Step 4 Unhook the tabs from the anchor slots of the mounting plate, as shown in Figure 4-2.

Figure 4-2 Unhooking the tabs

Step 5 Remove the two screws M4 x 12 from the back of the pRRU3801, and then remove the

attachment plate, as shown in Figure 4-3.


pRRU3801




Issue 04 (2011-01-10)



Figure 4-3 Removing the attachment plate from the pRRU3801

Step 6 Install a new pRRU3801 and take actions according to different scenarios.For details of

installation, refer to the pRRU3801 Installation Guide.

Step 7 Install the optical module on the optical port of pRRU3801.

CAUTION

Take correct ESD protection measures during operations, for example, wear an ESD wrist strap

or a pair of gloves. This can prevent electrostatic hazard to boards, modules, or electrical parts.

Step 8 Connect cables to the new pRRU3801 according to the recorded connections.

Step 9 Power on the pRRU3801.

----End

Follow-up Procedure

After replacing the pRRU3801, ensure that the following requirements are met:

l On the M2000 or the LMT, related alarms are cleared.

l A UE can access the cell carried by the pRRU3801.

Contact the local Huawei office to handle the faulty pRRU3801.

pRRU3801

Hardware Maintenance Guide 4 Replacing a pRRU3801



4-3




This describes how to replace an optical module. The optical module provides the interface for

optical-electrical conversion, thus enabling transmission through optical cables between the

BBU and other devices. You need to disconnect the optical cables when replacing the faulty

optical module. Therefore, services on the optical cables are disrupted during the replacement.

Prerequisite

l The quantity and model of the faulty optical modules are checked, and new optical modules

are ready.

l The connections of the faulty optical module and the associated optical cable are recorded.

l The ESD wrist strap or gloves and ESD box or bag are ready.

Context

Optical modules are installed in ports CPRI0 through CPRI2 on the WBBP.

Optical modules are hot swappable.

It takes about five minutes to replace an optical module. The time covers the activities of

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

module, connecting the optical cable to the new optical module, and recovery of the CPRI links.

CAUTION

l Take proper ESD protection measures, for example, wear an ESD wrist strap or a pair of

ESD gloves, to prevent electrostatic hazard to the board, module, or electrical parts.

l Do not look directly at the optical module after removing the connector of the optical cable

from the optical module.

Procedure

Step 1 Press the latch on the connector of the optical cable. Then, pull the connector out of the faultyoptical module.

pRRU3801

Hardware Maintenance Guide 5 Replacing an Optical Module



5-1



Step 2 Turn the ring on the faulty optical module outwards. Then, hold the ring and take the faulty

optical module out of the port. Remove the optical module from the BBU.

Step 3 Install a new optical module in the BBU.

Step 4 Remove the dustproof caps from the optical module and from the connector on the optical cable.Connect the optical cable to the optical module.

Step 5 Check whether the CPRI links are recovered by viewing the CPRI LED on the WBBP icon.

If... Then...

The CPRI LED is green, The CPRI links are recovered and the optical

module is replaced successfully.

The CPRI LED is of any other color, The CPRI links are not recovered. Check

whether the optical module and the optical

cable are correctly connected to the WBBP.

----End

Follow-up Procedure

Contact the local Huawei office to handle the faulty optical module.


pRRU3801


PRRU3801 Hardware Maintenance Guide(V200_04)

Documents

Transcript of PRRU3801 Hardware Maintenance Guide(V200_04)