BBU3900 Hardware Maintenance Guide(03)(PDF)-En

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BBU3900

Hardware Maintenance Guide

Issue 03

Date 2012-06-20

HUAWEI TECHNOLOGIES CO., LTD.



Copyright © Huawei Technologies Co., Ltd. 2012. 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 03 (2012-06-20) 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 BBU3900. The maintenance

tasks consist of power supply and grounding system maintenance, cabinet maintenance, and

power-on and power-off operations. This document also describes the procedures for replacingthe components.

Product Version

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

Product Name Product Version

DBS3900 V100R007C00

DBS3900 GSM V100R014C00

DBS3900 WCDMA V200R014C00

DBS3900 LTE V100R005C00

DBS3900 LTE TDD V100R005C00

Intended Audience

This document is intended for:

l Field engineers

l System engineers

Organization

1 Changes in the BBU3900 Hardware Maintenance Guide

This chapter describes the changes in the BBU3900 Hardware Maintenance Guide.

2 Maintenance Items for BBU3900 Hardware

BBU3900

Hardware Maintenance Guide About This Document



ii



Maintenance items for BBU3900 hardware include checking the following items: fans, the

ventilation of the BBU, the exterior and cleanness of hardware, indicators, and the ambient

temperature in the cabinet.

3 Powering On and Powering Off the BBU3900

This chapter describes how to power on and power off the BBU3900. After power-on, you need

to check the status of the indicators on the BBU3900. The power-off procedure for an emergency

is different from for a normal situation. You need to determine whether to perform a normal

power-off or emergent power-off based on the situation.

4 Replacing BBU3900 Cases

As the core of a base station, a BBU3900 processes the baseband signals of the entire base station

and communicates with the RNC/BSC and RFU/RRU. Replacing a BBU3900 interrupts services

carried by the base station.

5 Replacing the Components in the OMB

This chapter describes how to replace the components in the OMB, including the HEUA, AC/

DC power equipment, DCDU-03B, and AC surge protection box.

6 Replacing the Components in the IMB03

This chapter describes how to replace the components in the IMB03, including the AC/DC power

equipment and DCDU-03B.

7 Replacing the Components in the BBU3900

This chapter describes how to replace the components in the BBU3900 during the maintenance,

including the BBU3900 case, BBU3900 boards and modules, and optical modules.

8 Adding Components in the BBU3900

This chapter describes how to add new boards in the BBU during the maintenance.

9 Replacing SLPU Components

During the SLPU maintenance, the SLPU components, such as UELP, and UFLP, can be

replaced as required

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.

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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.

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.

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Contents

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

1 Changes in the BBU3900 Hardware Maintenance Guide......................................................1

2 Maintenance Items for BBU3900 Hardware.............................................................................3

3 Powering On and Powering Off the BBU3900.........................................................................5

3.1 Powering On the BBU3900................................................................................................................................6

3.2 Powering Off the BBU3900...............................................................................................................................7

4 Replacing BBU3900 Cases............................................................................................................8

5 Replacing the Components in the OMB.................................................................................11

5.1 Re placing the HEUA........................................................................................................................................12

5.2 Replacing the AC/DC Power Equipment.........................................................................................................14

5.3 Replacing the DCDU-03B................................................................................................................................20

5.4 Replacing the AC Surge Protection Box..........................................................................................................22

6 Replacing the Components in the IMB03...............................................................................25

6.1 Replacing the AC/DC Power Equipment.........................................................................................................26

6.2 Replacing the DCDU-03B................................................................................................................................32

7 Replacing the Components in the BBU3900...........................................................................35

7.1 Querying the Electronic Label for a Board.......................................................................................................37

7.2 Replacing the UMPTa1....................................................................................................................................37

7.3 Replacing the WMPT.......................................................................................................................................40

7.4 Replacing a GTMU..........................................................................................................................................43

7.5 Replacing the UMPTa2/UMPTa6....................................................................................................................46

7.6 Re placing the LMPT........................................................................... .............................................................53

7.7 Re placing the WBBP........................................................................................................................................60

7.8 Replacing the LBBP.........................................................................................................................................62

7.9 Re placing a UPEU............................................................................................................................................64

7.10 R eplacing the UEIU........................................................................................................................................67

7.11 Replacing the FAN Unit.................................................................................................................................69

7.12 Replacing a UTRP..........................................................................................................................................71

7.13 Replacing the USCU......................................................................................................................................73

7.14 Replacing a UBRI...........................................................................................................................................76

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Hardware Maintenance Guide Contents



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1 Changes in the BBU3900 Hardware

Maintenance Guide

This chapter describes the changes in the BBU3900 Hardware Maintenance Guide.

03 (2012-06-20)

This is the third commercial issue.

Compared with the issues for the 02 (2012-04-25), no information is added.

Compared with the issues for the 02 (2012-04-25), this issue incorporates the following changes:

Topic Change Description

7.4 Replacing a GTMU Changed the steps of blocking all cells of the

BTS.4 Replacing BBU3900 Cases

7.9 Replacing a UPEU

Compared with the issues for the 02 (2012-04-25), this issue deletes no contents.

02 (2012-04-25)

This is the second commercial issue.

Compared with the issues for the 01 (2012-03-20), no information is added.

Compared with the issues for the 01 (2012-03-20), this issue incorporates the following changes:


7.3 Replacing the WMPT l Add the steps by using a USB flash drive

l Add the steps of checking for alarms in the

prerequisites

l Add the steps of backing up the

configuration file in the prerequisites

7.2 Replacing the UMPTa1

7.4 Replacing a GTMU

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7.7 Replacing the WBBP l Add the steps of checking for alarms in the

prerequisites

lAdd the time estimation for how long needthe board to come up

7.8 Replacing the LBBP

7.16 Replacing the Optical Module Add the steps of confirming the type of a

faulty board.

Compared with the issues for the 01 (2012-03-20), this issue deletes no contents.

01 (2012-03-20)

This is the first commercial issue.

Compared with the issues for the Draft A (2012-02-10), no information is added.

Compared with the issues for the Draft A (2012-02-10), this issue incorporates the following

changes:


7.6 Replacing the LMPT

7.5 Replacing the UMPTa2/UMPTa6

Some descriptions are optimized.

Compared with the issues for the Draft A (2012-02-10), this issue deletes no contents.

Draft A (2012-02-10)

This is the draft version.

Compared with issue MBTS V100R004C00, WCDMA-NodeB V200R013C00, and GSM-BTS

V100R013C00, this issue is added with the following topic:

l 8.3 Adding a UTRP

l 7.15 Replacing the UCIU

l 7.2 Replacing the UMPTa1

l 6 Replacing the Components in the IMB03


V100R013C00, no information is changed.


V100R013C00, this issue deleted the following new topics:

l Replacing the SLPU

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2 Maintenance Items for BBU3900 Hardware

Maintenance items for BBU3900 hardware include checking the following items: fans, the

ventilation of the BBU, the exterior and cleanness of hardware, indicators, and the ambient

temperature in the cabinet.

Table 2-1 describes the maintenance items for BBU3900 hardware.

Table 2-1 Maintenance items for BBU3900 hardware

Item Checking Frequency

Operation Guide Reference Standard

Fans Weekly,

monthly, or

quarterly

Check fans. There is no fan-related

alarm.

Check the

ventilation of

the BBU.

Quarterly Check the air intake

vents and air exhaust

vents of the BBU and of

the rack and cabinet

housing the BBU.

The air intake vents and air

exhaust vents are clean. If

much dirt is on the air intake

vents and air exhaust vents,

maintenance personnel must

clean the vents.

Check the

hardware

exterior.

Monthly or

quarterly

Check whether the

hardware surface is

damaged and whether

the label on the cabinet is

legible.

The hardware surface is not

damaged and the label on the

cabinet is legible.

Check the

hardware

cleanness.

Monthly or

quarterly

Check whether the

hardware is clean.

The hardware surface is

clean, and the inside of

cabinet is not dusty.

Check

indicators.

Monthly or

quarterly

Check whether

indicators on the

hardware are normal.

There is no indicator-related

alarm.

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Item Checking Frequency

Operation Guide Reference Standard

Check the

ambient

temperature of

the cabinet.

Monthly or

quarterly

Check whether the

temperature in the

cabinet is normal.

The ambient temperature in

the BBU3900 must range

from –20oC to +55oC.

NOTE

The maintenance period depends on onsite conditions.

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3 Powering On and Powering Off the BBU3900

About This Chapter

This chapter describes how to power on and power off the BBU3900. After power-on, you need

to check the status of the indicators on the BBU3900. The power-off procedure for an emergency

is different from for a normal situation. You need to determine whether to perform a normal

power-off or emergent power-off based on the situation.

3.1 Powering On the BBU3900

After setting the power switch of the BBU3900 to ON, you need to check the running status of

the BBU3900 by observing the status of indicators.

3.2 Powering Off the BBU3900

This section describes how to power off the BBU3900 in a normal situation and in an emergency.

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3.1 Powering On the BBU3900

After setting the power switch of the BBU3900 to ON, you need to check the running status of the BBU3900 by observing the status of indicators.

Prerequisites

The input voltage stays within a proper range.

l If the BBU3900 uses +24 V DC power, the input voltage should range from +21.6 V DC

to +29 V DC.

l If the BBU3900 uses -48 V DC power, the input voltage should range from -38.4 V DC to

-57 V DC.

Procedure

Step 1 Set the power switch of the BBU3900 to 1.

Step 2 Check the status of indicators on the panel of each board in the BBU3900, and determine whether

the corresponding board is operating properly according to the description in Table 3-1.

Table 3-1 Indication of normal power supply to the components

Component Normal Power Supply Status

Main control board l The RUN indicator is steady on.l The ALM indicator is steady off.

l The ACT indicator is steady on.Baseband processing board

UTRP

USCU

FAN The STATE indicator is blinking green (on

for 1s and off for 1s).

UPEU The RUN indicator is steady on.

If the status of indicators is abnormal, perform the following operations:

l Reset the board.

l Remove the board and check whether there are damaged pins. If so, replace the board. If no,

reinstall the board.

If the status of the indicators is still abnormal, contact Huawei for technical support.

Step 3 When the board becomes functional, the indicators enter the normal status. Perform the next

step based on the status of the indicators.

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If... Then...

Main control board l The RUN indicator is on

for 1s and off for 1s,

lThe ALM indicator issteady off,

The BBU3900 is functioning

properly. End the task.Baseband processing board

UTRP

USCU

FAN The STATE indicator is

blinking green (on for 1s and

off for 1s).

UPEU The RUN indicator is steady

on.

The indicators are in other status. The BBU3900 is faulty.

Clear the fault, and then go toStep 1.

----End

3.2 Powering Off the BBU3900

This section describes how to power off the BBU3900 in a normal situation and in an emergency.

ProcedureStep 1 Determine whether to perform a normal power-off or emergent power-off as required.

If... Then...

The BBU3900 needs to be powered off in

scenarios such as a planned equipment swap

or foreseeable regional blackout,

You need to perform a normal power-off by

referring to Step 2.

The BBU3900 needs to be powered off in

emergent scenarios such as a fire, smoke, or

water damage,

You need to perform an emergent power-off

by referring toStep 3.

Step 2 Turn off the power switch for the BBU3900 and then the power switch for the external power

supply to the BBU3900.

Step 3 Turn off the power switch for the external power supply to the BBU3900 and then the power

switch for the BBU3900 if time permits.

----End

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4 Replacing BBU3900 Cases

As the core of a base station, a BBU3900 processes the baseband signals of the entire base station

and communicates with the RNC/BSC and RFU/RRU. Replacing a BBU3900 interrupts services

carried by the base station.

Prerequisites

l Query alarms reported by the base station. For details, see Browsing the Current Alarm.

l The following tools and materials are available: an ESD wrist strap or ESD gloves and an

M6 screwdriver.

l The type and quantity of BBU cases to be replaced are confirmed. New BBU cases are

available.

l A computer equipped with the service maintenance terminal (SMT) and a network cable

is available for a GBTS using a static IP address. For details about the hardware

requirements for the computer, see the GSM SMT User Guide.

l Associated personnel have been permitted to access the site and have obtained the required

keys.

Procedure

Step 1 Ask the M2000 administrator to perform the following operations for the replacement of the

BBU case:

NOTE

In a multi-mode base station, block the cells of each mode respectively.

1. On the NodeB, run the BLK LOCELL command to block all cells working in UMTS

mode. Modify the ESN on the RNC to the same as the ESN on the new BBU case. For

details, see Creating NodeB Commissioning Tasks.

2. On the eNodeB, run the BLK CELL command to block all cells working in LTE mode.

Modify the ESN in the DHCP management interface to the same as the new BBU case. For

details, see Creating an eNodeB Commissioning Task.

3. On the BSC, run the LST GCELL command to query the configuration of all cells of the

base station, and run the SET GCELLADMSTAT command and set ADMSTAT to

LOCK to block these cells. Modify the ESN on the BSC to the same as the new BBU case.

For details, see Creating GBTS Commissioning Tasks.

Step 2 Power off the BBU. For details, see 3.2 Powering Off the BBU3900.

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Step 3 Put on an ESD wrist strap or ESD gloves.

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

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

Step 4 Record all cable connections on the panels of the boards in the BBU case to be replaced.

Step 5 Disconnect the power cables, transmission cables, common public radio interface (CPRI) cables,

and alarm cables from the panels of the boards in the BBU case.

Step 6 Loosen the four M6 screws on the BBU case, and remove the BBU case, as shown in Figure

4-1.

Figure 4-1 Removing a BBU case

Step 7 Remove all the boards in the faulty BBU case, install them in the corresponding slots of the new

BBU case, and install filler panels in the vacant slots.

Step 8 Remove the cable claws from both sides of the faulty BBU case, install them at the corresponding

positions of the new BBU case, and tighten the screws to 1.2 N m (10.62 lbf in.).

Step 9 Install the new BBU case, tighten the screws on the BBU case to 2 N m (17.70 lbf in.), and

reconnect the cables.

Step 10 Power on the BBU. For details, see 3.1 Powering On the BBU3900.

Step 11 Check the status of the new BBU case by observing the status of indicators on the boards in the

BBU. For details about the status of the indicators, see the related hardware description.

Step 12 If a GBTS uses a static IP address, perform the following operations:1. Connect the computer on which the SMT application is installed to the ETH port on the

GTMU, as shown in Figure 4-2.

Figure 4-2 Connecting the GTMU

2. Log in to the SMT, and configure the static IP data according to the instructions in theGSM

SMT User Guide.

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3. Restart the GTMU on the SMT.

4. Disconnect the computer on which the SMT application is installed from the GTMU.

Step 13 On the M2000, perform the following operations:

NOTE

Alarms reported by a GSM+UMTS (GU), GSM+LTE (GL), UMTS+LTE (UL), or GSM+UMTS+LTE

(GUL) base station can be checked and cleared on the M2000. For example, alarms reported by a GU base

station can be checked and cleared on the M2000.

1. On the NodeB, run the UBL LOCELL command to unblock all cells working in UMTS

mode.

2. On the eNodeB, run the UBL CELL command to unblock all cells working in LTE mode.

3. On the BSC, run the SET GCELLADMSTAT command and set ADMSTAT to

UNLOCK to unblock all cells of the BTS.

4. Check whether any new alarms are generated by the base station according to the

instructions in Browsing the Current Alarm. Then handle all NodeB alarms according to

the instructions in Handling NodeB Alarms.


instructions in Browsing the Current Alarm. Then handle all GBTS alarms according to

the instructions in Handling GBTS Alarms.


instructions in Browsing the Current Alarm. Then handle all eNodeB alarms according to

the instructions in Browsing Active Alarms or Events.

7. Synchronize the inventory information manually. For details, see Synchronizing Inventory

Data.

Step 14 Take off the ESD wrist strap or ESD gloves, and pack up all the tools.

----End

Follow-up Procedure

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

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

l Fill in the fault form with detailed information about the replaced component.

l Contact the local Huawei office to handle the faulty component.

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5 Replacing the Components in the OMB

About This Chapter

This chapter describes how to replace the components in the OMB, including the HEUA, AC/

DC power equipment, DCDU-03B, and AC surge protection box.

5.1 Replacing the HEUA

The Heat Exchange Unit type A (HEUA) provides power for the fan assembly, monitors the

status of the f an assembly, collects the cabinet environment monitoring information and power

surge protection alarm information, and reports the collected information to the BBU.

5.2 Replacing the AC/DC Power Equipment

The AC/DC power equipment is used in an AC cabinet, converting external 220 V AC input power into -48 V DC power.

5.3 Replacing the DCDU-03B

The DCDU-03B distributes DC power to different components. Replacing the DCDU-03B

disrupts the power supply to the entire base station and all services carried by the base station.

5.4 Replacing the AC Surge Protection Box

The AC surge protection box provides surge protection for the input AC power.

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5.1 Replacing the HEUA

The Heat Exchange Unit type A (HEUA) provides power for the fan assembly, monitors thestatus of the fan assembly, collects the cabinet environment monitoring information and power

surge protection alarm information, and reports the collected information to the BBU.

Prerequisites

l The tools and materials are available, such as the ESD wrist strap or ESD gloves and M3

screwdriver.

l The quantity and type of board to be replaced are confirmed, and the new board is ready.

l Associated personnel have gained permissions to access the site and have obtained the

required keys.

Context

Figure 5-1 shows the position of the HEUA in the OMB.

Figure 5-1 Position of the HEUA

HEUA

Procedure


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CAUTION

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

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

Step 2 Set circuit breaker SW7 on the DCDU-03B to OFF.

Step 3 Record all the cable connections on the panel of the module to be replaced.

Step 4 Disconnect the power cable and monitoring cable from the HUEA, as shown in Figure 5-2.

Figure 5-2 Disconnecting the cables

Step 5 Remove the four M3 screws from the cover plate and then remove the cover plate. Remove the

four M3 screws from the HEUA and then remove the HEUA, as shown in Figure 5-3.

Figure 5-3 Removing the HEUA

Step 6 Install the new board, tighten the screws on the board to 0.55 N·m (4.87 lbf·in.), then install the

cover plate, tighten the screws on the cover plate until the tightening torque reaches 0.55 N·m(4.87 lbf·in.), and then reconnect the cables.

Step 7 Take off the ESD wrist strap or ESD gloves, and pack up all tools.

----End

Follow-up Procedure

l Place the replaced component into the ESD box or bag. Then, place the ESD box or bag

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



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The AC/DC power equipment is used in an AC cabinet, converting external 220 V AC input

power into -48 V DC power.

Prerequisites

l The tools and materials are available, such as the ESD wrist strap or ESD gloves, M3

Phillips screwdriver, and M6 Phillips screwdriver.

l The quantities and types of modules to be replaced are confirmed, and the new modules

are ready.

l Associated personnel have gained permission to access the site and have obtained the

required keys.

Contextl Figure 5-4 shows the position of the AC/DC power equipment in the cabinet.

Figure 5-4 Position of the AC/DC power equipment in the cabinet

1

(1) AC/DC power equipment

l Figure 5-5 shows the positions of the components in the AC/DC power equipment.

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Figure 5-5 Positions of the components in the AC/DC power equipment

4

3

2

1

(1) Power distribution unit(PDU)

(2) Power supply unit(PSU)

(3) Power monitoring unit(PMU)

(4) Subrack

l The AC/DC power equipment consists of the PDU, PSUs, PMU, and subrack. When the

entire AC/DC power equipment is faulty, you need to replace the entire AC/DC power

equipment. When a component of the AC/DC power equipment is faulty, you only need to

replace the faulty component.

NOTE

l If you have confirmed that the subrack is faulty and needs to be replaced, you need to remove

the PDU, PSUs, and PMU before removing the subrack from the cabinet.

l If you have confirmed that the entire AC/DC power equipment is faulty, you need to remove the

entire AC/DC power equipment from the cabinet.

l Replacing the AC/DC power equipment, PSU, PMU, PDU, or subrack interrupts all the

services carried by the base station. Therefore, the AC/DC power equipment or its

components must be replaced in 20 minutes.

Procedure

Step 1 Power off the AC/DC power equipment.


CAUTION

Take proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to

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

Step 3 Record all cable connections on the panel of the component to be replaced.

Step 4 Remove the component to be replaced.

l Remove the entire AC/DC power equipment.

1. Remove all cables from the AC/DC power equipment.

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2. Loosen the four M6 screws on the mounting ears of the AC/DC power equipment, and

remove the AC/DC power equipment, as shown in Figure 5-6.

Figure 5-6 Removing the AC/DC power equipment

l Remove the PDU.

1. Remove the DC output power cable from the PDU, as shown in Figure 5-7.

Figure 5-7 Removing the cable from the PDU

2. Loosen the M3 screw from the PDU panel, and remove the PDU, as shown in Figure

5-8.

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Figure 5-8 Removing the PDU

1

2

l Remove the PSU.

Loosen the M3 screw from the PSU panel, and remove the PSU, as shown in Figure 5-9.

Figure 5-9 Removing the PSU

1

2

l Remove the PMU.

1. Remove the monitoring signal cable from the PMU, as shown in Figure 5-10.

Figure 5-10 Removing the cable from the PMU

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2. Loosen the M3 screw from the PMU panel, and remove the PMU, as shown in Figure

5-11.

Figure 5-11 Removing the PMU

1

2

3. If the PMU needs to be replaced, set the DIP switch on the new PMU according to the

settings of the DIP switch on the faulty PMU. For details about the DIP switch, see AC/

DC Power Equipment.

l Remove the subrack.

1. Remove all cables from the AC/DC power equipment.2. Remove the PDU, PSU, and PMU from the subrack.

3. Loosen the four M6 screws on the mounting ears of the subrack, and then remove the

subrack, as shown in Figure 5-12.

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5.3 Replacing the DCDU-03BThe DCDU-03B distributes DC power to different components. Replacing the DCDU-03B


Prerequisites


screwdriver.

l The type of module to be replaced and its quantity are confirmed, and the new modules are

ready.


required keys.

Context

l Figure 5-13 shows the position of the DCDU-03B in the OMB.

Figure 5-13 Position of the DCDU-03B

DCDU

lReplacing the DCDU-03B disrupts all the services carried by the base station. Therefore,the replacement should be complete within 20 minutes.

Procedure

Step 1 Power off the DCDU-03B.


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CAUTION




Step 4 Disconnect the power cables from the DCDU-03B, as shown in Figure 5-14.


Step 5 Remove the four M6 screws on the panel, and then remove the DCDU-03B, as shown in Figure

5-15.

Figure 5-15 Removing the DCDU-03B

BBU3900




21



Step 6 Install the new DCDU-03B, tighten the screws on the DCDU-03B until the tightening torque

reaches 2 N·m (17.70 lbf·in.), and reconnect the cables.

Step 7 Power on the DCDU-03B.


----End

Follow-up Procedure





5.4 Replacing the AC Surge Protection Box

The AC surge protection box provides surge protection for the input AC power.

Prerequisites


screwdriver.

l The quantity and type of AC surge protection box to be replaced are confirmed, and the

new AC surge protection box is ready.

l

Associated personnel have gained permissions to access the site and have obtained therequired keys.

Context

l Figure 5-16 shows the position of the AC surge protection box in the OMB.

Figure 5-16 Position of the AC surge protection box

1

(1) AC surge protection box

BBU3900




22



l Replacing the AC surge protection box interrupts the surge protection function of the base

station. Therefore, the AC surge protection box should be replaced within 10 minutes.

Procedure

Step 1 Power off the base station.


CAUTION



Step 3 Record all the cable connections on the panel of the faulty AC surge protection box.

Step 4 Disconnect the monitoring cable and power cable from the AC surge protection box, as shownin Figure 5-17.


Step 5 Remove the screw on the panel by using the M4 screwdriver, and then remove the AC surge

protection box, as shown in Figure 5-18.

Figure 5-18 Removing the AC surge protection box

BBU3900




23



Step 6 Install the new AC surge protection box, tighten the screw on the panel until the tightening torque

reaches 1.2 N·m (10.62 lbf·in.), and then reconnect the cables.

Step 7 Power on the base station.


----End

Follow-up Procedure





BBU3900




24



6 Replacing the Components in the IMB03

About This Chapter

This chapter describes how to replace the components in the IMB03, including the AC/DC power

equipment and DCDU-03B.




6.2 Replacing the DCDU-03B

The DCDU-03B distributes DC power to different components. Replacing the DCDU-03B


BBU3900

Hardware Maintenance Guide 6 Replacing the Components in the IMB03



25






Prerequisites

l The tools and materials are available, such as the ESD wrist strap or ESD gloves, M3

Phillips screwdriver, and M6 Phillips screwdriver.

l The quantities and types of modules to be replaced are confirmed, and the new modules

are ready.


required keys.

Contextl Figure 6-1 shows the position of the AC/DC power equipment in the cabinet.

Figure 6-1 Position of the AC/DC power equipment in the cabinet

(1) AC/DC power equipment

l Figure 6-2 shows the positions of the components in the AC/DC power equipment.

BBU3900




26



Figure 6-2 Positions of the components in the AC/DC power equipment

4

3

2

1

(1) Power distribution unit(PDU)

(2) Power supply unit(PSU)

(3) Power monitoring unit(PMU)

(4) Subrack

l The AC/DC power equipment consists of the PDU, PSUs, PMU, and subrack. When the

entire AC/DC power equipment is faulty, you need to replace the entire AC/DC power

equipment. When a component of the AC/DC power equipment is faulty, you only need to

replace the faulty component.

NOTE

l If you have confirmed that the subrack is faulty and needs to be replaced, you need to remove

the PDU, PSUs, and PMU before removing the subrack from the cabinet.

l If you have confirmed that the entire AC/DC power equipment is faulty, you need to remove the

entire AC/DC power equipment from the cabinet.

l Replacing the AC/DC power equipment, PSU, PMU, PDU, or subrack interrupts all the

services carried by the base station. Therefore, the AC/DC power equipment or its

components must be replaced in 20 minutes.

Procedure

Step 1 Power off the AC/DC power equipment.


CAUTION



Step 3 Record all cable connections on the panel of the component to be replaced.

Step 4 Remove the component to be replaced.

l Remove the entire AC/DC power equipment.

1. Remove all cables from the AC/DC power equipment.

BBU3900




27



2. Loosen the four M6 screws on the mounting ears of the AC/DC power equipment, and

remove the AC/DC power equipment, as shown in Figure 6-3.

Figure 6-3 Removing the AC/DC power equipment

l Remove the PDU.

1. Remove the DC output power cable from the PDU, as shown in Figure 6-4.

Figure 6-4 Removing the cable from the PDU

2. Loosen the M3 screw from the PDU panel, and remove the PDU, as shown in Figure

6-5.

BBU3900




28



Figure 6-5 Removing the PDU

1

2

l Remove the PSU.

Loosen the M3 screw from the PSU panel, and remove the PSU, as shown in Figure 6-6.

Figure 6-6 Removing the PSU

1

2

l Remove the PMU.

1. Remove the monitoring signal cable from the PMU, as shown in Figure 6-7.

Figure 6-7 Removing the cable from the PMU

BBU3900




29



2. Loosen the M3 screw from the PMU panel, and remove the PMU, as shown in Figure

6-8.

Figure 6-8 Removing the PMU

1

2

3. If the PMU needs to be replaced, set the DIP switch on the new PMU according to the

settings of the DIP switch on the faulty PMU. For details about the DIP switch, see AC/

DC Power Equipment.

l Remove the subrack.

1. Remove all cables from the AC/DC power equipment.2. Remove the PDU, PSU, and PMU from the subrack.

3. Loosen the four M6 screws on the mounting ears of the subrack, and then remove the

subrack, as shown in Figure 6-9.

BBU3900




30



Figure 6-9 Removing the subrack

Step 5 Install the new component.

l Install the new AC/DC power equipment, tighten the screws on the mounting ears to 2 N·m

(17.70 lbf·in.), and then reconnect related cables.

l Install the new PDU, tighten the screw on the panel to 0.55 N·m (4.87 lbf·in.), and then

reconnect related cables.

l Install the new PSU and tighten the screw on the panel to 0.55 N·m (4.87 lbf·in.).

l Install the new PMU, and tighten the screw on the panel to 0.55 N·m (4.87 lbf·in.), and then

reconnect related cables.

l Install the new subrack, tighten the screws on the mounting ears to 2 N·m (17.70 lbf·in.),

install the PDU, PSU, and PMU in sequence, and then reconnect related cables.

Step 6 Power on the AC/DC power equipment.

Step 7 Check whether the AC/DC power equipment works properly according to the status of theindicators on the AC/DC power equipment, BBU, and RRU.

NOTE

For details about the indicators on the AC/DC power equipment, BBU, and RRU, see the corresponding

hardware description document.


----End

Follow-up Procedure

l

Place the replaced component into the ESD box or bag. Then, place the ESD box or baginto a foam-padded carton or the packing box of the new component.

BBU3900




31





6.2 Replacing the DCDU-03BThe DCDU-03B distributes DC power to different components. Replacing the DCDU-03B


Prerequisites


screwdriver.

l The type of module to be replaced and its quantity are confirmed, and the new modules are

ready.

l

Associated personnel have gained permissions to access the site and have obtained therequired keys.

Context

l Figure 6-10 shows the position of the DCDU-03B in the IMB03.

Figure 6-10 Position of the DCDU-03B

(1) DCDU-03B

Procedure

Step 1 Power off the DCDU-03B.


CAUTION




BBU3900




32



Step 4 Disconnect the power cables from the DCDU-03B, as shown in Figure 6-11.


Step 5 Remove the four M6 screws on the panel, and then remove the DCDU-03B, as shown in Figure

6-12.

Figure 6-12 Removing the DCDU-03B

Step 6 Install the new DCDU-03B, tighten the screws on the DCDU-03B until the tightening torque

reaches 2 N·m (17.70 lbf·in.), and reconnect the cables.

Step 7 Power on the DCDU-03B.


----End

BBU3900




33



Follow-up Procedure





BBU3900




34



7 Replacing the Components in the BBU3900

About This Chapter

This chapter describes how to replace the components in the BBU3900 during the maintenance,

including the BBU3900 case, BBU3900 boards and modules, and optical modules.

NOTE

In a dual-mode base station, if two main control boards need to be replaced, you must replace one main

control board and wait for the new board to resume services before replacing the other main control board.

7.1 Querying the Electronic Label for a Board

Before replacing a board, you need to query the board information to confirm the type of board

to be replaced.


The universal main processing and transmission unit (UMPT) processes signals and manages

resources on other boards.

7.3 Replacing the WMPT

The WCDMA main processing and transmission unit (WMPT) processes signals and manages



The GSM transmission and timing and management unit (GTMU) is the basic transmission and

control function entity of a BBU. It provides the reference clock, power supply port, maintenance

port, and external alarm collection port, and controls and manages the entire base station.


The universal main processing and transmission unit (UMPT) processes signaling messages and

manages resources on other boards.


The LTE main processing and transmission unit (LMPT) manages the entire eNodeB system in

terms of OM and signaling processing and provides system clock for the BBU3900.

7.7 Replacing the WBBP

The WCDMA Baseband Process Unit (WBBP) is configured in the BBU and it processes

baseband signals.


BBU3900

Hardware Maintenance Guide 7 Replacing the Components in the BBU3900



35



The LTE baseband processing unit (LBBP) in the BBU3900 processes baseband signals and

CPRI signals.

7.9 Replacing a UPEU

A universal power and environment interface unit (UPEU) is configured in a BBU and it converts

-48 V DC or +24 V DC power into +12 V DC power.

7.10 Replacing the UEIU

The Universal Environment Interface Unit (UEIU) provides channels for transmitting the

monitoring signals from external equipment to the BBU.

7.11 Replacing the FAN Unit

The FAN unit is located in the BBU. The FAN unit and the air intake box form a ventilation

loop, which ensures ventilation and heat dissipation. Replacing the FAN unit may lead to

overtemperature alarms due to interruption of heat dissipation in the BBU. The services,

however, are not affected.

7.12 Replacing a UTRP

A universal transmission processing unit (UTRP) provides ports for transmission.

7.13 Replacing the USCU

The Universal Satellite card and Clock Unit (USCU) in the BBU receives clock signals, such as

Global Positioning System (GPS), remote global position system (RGPS), building integrated

timing supply (BITS), and M-1PPS signals. In addition, it transmits or receives 1PPS+TOD

clock signals.

7.14 Replacing a UBRI

A universal baseband radio interface board (UBRI) provides ports for common public radio

interface (CPRI) cables. Replacing a UBRI interrupts services carried by the board.

7.15 Replacing the UCIU

The Universal inter-Connection Infrastructure Unit (UCIU) interconnects BBUs. It forwards

control and synchronization information from one BBU to another.

7.16 Replacing the Optical Module

The optical module is used for the optical transmission between the BBU and other devices.

BBU3900




36



7.1 Querying the Electronic Label for a Board

Before replacing a board, you need to query the board information to confirm the type of board

to be replaced.

1. Run the DSP BTSELABEL command on the LMT to query the information of the board

that is configured on the GSM side or run the DSP BRDMFRINFO command on the LMT

to query the information of the board that is configured on the UMTS or LTE side.

2. Confirm the type of the board to be replaced according to the Boadtype and Description

fields in the query result. Ensure that the new board is of the same type by checking the

information indicated by the bar code on the label of the panel or handle of the new board.

Figure 7-1 shows a label containing the bar code.

Figure 7-1 A label containing the bar code


The universal main processing and transmission unit (UMPT) processes signals and manages


Prerequisites

l To confirm the type of a faulty board, do as follows:

– If the board can be queried online, run the associated command on the LMT following

the instructions in 7.1 Querying the Electronic Label for a Board.

– If the board is faulty and cannot be queried online, query the board information offline

on the M2000 following the instructions in Querying Inventory Data.

l To back up the configuration file and software, see Manually Backing Up NE Data.

l To download the backup configuration file and software, do as follows:

– If the configuration file and software are downloaded by using a USB flash drive, see

Obtaining a USB Flash Drive for NodeB Commissioning.

– If the WMPT needs to be upgraded on the LMT after the replacement, upload the

configuration file of the base station to the FTP server of the M2000 following the

instructions in Transferring Files from NEs to a Client.


l

The tools and materials are available, such as the ESD wrist strap or ESD gloves and M3screwdriver.

BBU3900




37




required keys.

Context

l Figure 7-2 shows the position of the UMPT in the BBU.

Figure 7-2 Position of the UMPT

l The UMPT is hot-swappable.

l If a multi-mode base station supports co-transmission and the shared ports for co-

transmission are on the UMPT, replacing the UMPT interrupts the services of the peer

mode. Typical scenario: The GU dual-mode base station supports co-transmission over IP

through the Ethernet link on the UMPT. The GSM data is transmitted through the FE ports

interconnecting the UMPT and GTMU panels.

l In a multi-mode base station using the dual-star topology, an abnormal reset or removal

and insertion of a main control board may interrupt services of other modes as well.

Procedure

Step 1 Before replacing the UMPT, instruct the M2000 administrator to perform the following

operations:

1. On the NodeB, run the BLK LOCELL command to block all cells of the NodeB.

NOTE

If this command cannot be executed or the services of cells are interrupted, go to Step 2.


WARNING



Step 3 Record all cable connections on the panel of the UMPT to be replaced.

Step 4 Disconnect the transmission cable from the UMPT. If a surge protection board is configured,

the surge protection transfer cable also needs to be disconnected, as shown in Figure 7-3.

BBU3900




38




Step 5 Loosen the two M3 screws on the panel, raise the ejector levers, and then pull out the UMPT,

as shown in Figure 7-4.

Figure 7-4 Removing the UMPT

Step 6 Set the DIP switches on the new board following the settings of the DIP switches on the replaced board. For details, see UMPT.

Step 7 Install the new board, lower the ejector levers, tighten the screws on the board panel to 0.6 N·m

(5.31 lbf·in.), and reconnect the cables.

Step 8 Check the status of the new board by observing the status of indicators. For details about the

status of the indicators, see UMPT.

Step 9 Upgrade NodeB software and load data configuration file.

l To upgrade the NodeB software and load the data configuration file by using a USB flash

drive, see Upgrading the NodeB Software and Downloading the Data Configuration File

(on the NodeB Side).

l To upgrade the NodeB software and load the data configuration file on the LMT, see

Upgrading the NodeB Software and Downloading the Data Configuration File.

Step 10 Inform the M2000 administrator that the replacement is complete, and instruct the administrator

to perform the following operations:

1. On the NodeB, run the UBL LOCELL command to unblock all cells of the NodeB.




3. Synchronize the inventory information manually following the instructions inSynchronizing Inventory Data.

BBU3900




39



4. Ask the onsite engineers to perform dialing tests to check whether the cells can normally

provide services.


----End

Follow-up Procedure


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



7.3 Replacing the WMPT

The WCDMA main processing and transmission unit (WMPT) processes signals and manages


Prerequisites

NOTE

This section involves the following scenarios:

l Scenario one: replacing the WMPT with a new WMPT

l Scenario two: replacing the WMPT with a UMPT

The replacement procedures in the two scenarios are the same. The following describes the procedure in

the first scenario.







l To download the backup configuration file and software, do as follows:

– If the configuration file and software are downloaded by using a USB flash drive, see

Obtaining a USB Flash Drive for NodeB Commissioning.

–If the WMPT needs to be upgraded on the LMT after the replacement, upload theconfiguration file of the base station to the FTP server of the M2000 following the

instructions in Transferring Files from NEs to a Client.



screwdriver.


required keys.

Context

l Figure 7-5 shows the position of the WMPT in the BBU.

BBU3900




40



Figure 7-5 Position of the WMPT in the BBU

WMPT

WMPT

ETH FE0 FE1 USBTST E1/T1 RSTGPS

RUN

ALMACT

TX RX

l The WMPT is hot-swappable.

l If a multi-mode base station supports co-transmission and the shared ports for co-

transmission are on the WMPT, replacing the WMPT interrupts the services of the peer

mode. Typical scenario: The GU dual-mode base station supports co-transmission over IP

through the Ethernet link on the WMPT. The GSM data is transmitted through the FE ports

interconnecting the WMPT and GTMU panels.



Procedure

Step 1 Before replacing the WMPT, instruct the M2000 administrator to perform the following

operations:

1. On the NodeB, run the BLK LOCELL command to block all cells of the NodeB.

NOTE



WARNING



Step 3 Record all cable connections on the panel of the WMPT to be replaced.

Step 4 Disconnect the transmission cable from the WMPT. If a surge protection board is configured,

the surge protection transfer cable also needs to be disconnected, as shown in Figure 7-6.


Step 5 Loosen the two M3 screws on the panel, raise the ejector levers, and then pull out the WMPT,as shown in Figure 7-7.

BBU3900




41



Figure 7-7 Removing the WMPT

2

1

Step 6 Set the DIP switches on the new board according to the settings of the DIP switches on the

replaced board. For details, see WMPT.

Step 7 Install the new board, lower the ejector levers, tighten the screws on the board panel to 0.6 N·m

(5.31 lbf·in.), and reconnect the cables.


status of the indicators, see WMPT.

Step 9 Upgrade NodeB software and load data configuration file.

l To upgrade the NodeB software and load the data configuration file by using a USB flash

drive, see Upgrading the NodeB Software and Downloading the Data Configuration File

(on the NodeB Side).

l To upgrade the NodeB software and load the data configuration file on the LMT, see

Upgrading the NodeB Software and Downloading the Data Configuration File.

Step 10 Inform the M2000 administrator that the replacement is complete, and instruct the administrator to perform the following operations:

1. On the NodeB, run the UBL LOCELL command to unblock all cells of the NodeB.




3. Synchronize the inventory information manually following the instructions in

Synchronizing Inventory Data.


provide services.


----End

Follow-up Procedure


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



BBU3900




42




The GSM transmission and timing and management unit (GTMU) is the basic transmission and

control function entity of a BBU. It provides the reference clock, power supply port, maintenance

port, and external alarm collection port, and controls and manages the entire base station.

Prerequisites






l To query the base station information, do as follows:

– On the BSC, run the LST BTSAUTODLDACTINFO command to check whether the

function of automatically loading and activating base station software has been enabled.

– Query alarms reported by the base station. For details, see Browsing the Current Alarm.

– If a GBTS uses a static IP address, run the LST BTSIPRT, LST BTSDEVIP, and LST

BTSIP commands to query the IP addresses and routing information.


l If the configuration file and software are downloaded by using a USB flash drive, see

Obtaining the USB Flash Drive for On-Site GBTS Commissioning.


M3 Phillips screwdriver.l A computer equipped with the service maintenance terminal (SMT) and a network cable

is available for a GBTS using a static IP address. For details about the hardware

requirements for the computer, see the GSM SMT User Guide.


keys.

Context

You can replace the GTMU with another GTMU or a GTMUb.

l

Figure 7-8 shows the position of the GTMU in the BBU.

Figure 7-8 Position of a GTMU

GTMU

GTMU

ETH FE0 FE1

CPRI0 CPRI2 CPRI4

CPRI3CPRI1 CPRI5

TX RX

TX0 RX0 TX1 RX1 T X2 RX2 TX3 RX3 TX4 RX4 TX5 RX5LIU0LIU2

LIU1LIU3

USBTSTE1/T1 RST

RUN

ALM

ACT

1 2 3 4 5

l The GTMU is hot-swappable.

BBU3900




43



l If a multi-mode base station supports co-transmission and the shared port for co-

transmission is located GTMU, replacing the GTMU interrupts services of the peer mode.

Typical scenario: The GU dual-mode base station supports co-transmission over TDM

through the E1/T1 ports on the GTMU. The UMTS data is transmitted through the

backplane in the manner of TDM over Packet (ToP).



Procedure

Step 1 Before replacing a GTMU, ask the M2000 administrator to perform the following operation: On

the BSC, run the SET GCELLADMSTAT command and set ADMSTAT to LOCK to block

all cells of the BTS.


WARNING

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


Step 3 Record all cable connections on the panel of the GTMU to be replaced.

Step 4 Disconnect the transmission cable and CPRI cables from the GTMU. If a surge protection board

is configured, the surge protection transfer cable also needs to be disconnected, as shown in

Figure 7-9.


Step 5 Loosen the two M3 screws on the panel, raise the ejector levers, and pull out the GTMU, as

shown in Figure 7-10.

Figure 7-10 Removing the GTMU

12

BBU3900




44



Step 6 Set the DIP switches on the new board to the same as the settings of the DIP switches on the

replaced board. For details about the DIP switch, see GTMU.

Step 7 Install the new board, lower the ejector levers, tighten the screws on the board panel to 0.6 N m

(5.31 lbf in.), and reconnect the cables.


status of the indicators, see GTMU.

Step 9 If a base station uses a static IP address, perform the following operations:

1. Connect the computer on which the SMT application is installed to the ETH port on the

GTMU, as shown in Figure 7-11.

Figure 7-11 Connecting the GTMU

2. Log in to the SMT, and configure the static IP data according to the instructions in theGSM

SMT User Guide.

3. Restart the GTMU on the SMT.

4. Disconnect the computer on which the SMT application is installed from the GTMU.

Step 10 To upgrade GBTS software and load the configuration file, do as follows:

l To upgrade the GBTS software and load the configuration file by using a USB flash drive,

see Upgrading the GBTS Software and Configurations.

l To upgrade the GBTS software and load the configuration file using the SMT locally and

the LMT remotely, do as follows:

If the UTRPc works in GSM mode and is connected to the transport network, go to a. If

no, go to b.

– a. Query the software versions of the GTMU and UTRPc according to the instructions

in Checking the Active Software Version on the SMT. Check whether the versions are

the target versions. If yes, go to Step 11. If no, load and activate the GTMU and UTRPc

software versions on the SMT.

– b. Query the software version of the board according to the instructions in Checking theActive Software Version on the SMT. If the software version is the target version, go

to Step 11. If no, go to c.

– c. On the LMT, run the LST BTSAUTODLDACTINFO command to check whether

the function of automatically loading and activating the base station software is enabled

on the BSC. If yes, go to Step 11. If no, load and activate the GTMU software and TRXs

of the corresponding base station according to the instructions in Forcibly Loading

Software and Activating Software.



1. Run the SET GCELLADMSTAT command and set ADMSTAT to UNLOCK to unblock all cells of the BTS.

BBU3900




45







Synchronizing Inventory Data.4. Ask the onsite engineers to perform dialing tests to check whether the cells can normally

provide services.


----End

Follow-up Procedure



lFill in the fault form with detailed information about the replaced component.



The universal main processing and transmission unit (UMPT) processes signaling messages and

manages resources on other boards.

Prerequisites


–If the board can be queried online, run the associated command on the LMT following




l Make preparations according to onsite conditions of the eNodeB.

Scenario Preparation

No SeGW is configured and the

LOFD-002004 Self-configuration

feature is available.

1. Download the eNodeB software

working with the product version of the

eNodeB from http://

support.huawei.com.

2. Back up the configuration file and

license file following the instructions in

Transferring Files from NEs to a Client.

BBU3900




46

http://support.huawei.com/







feature is unavailable.



eNodeB from http://

support.huawei.com.




3. Prepare a USB flash drive. For details,

see Preparing the USB Flash Drive for

Local Commissioning (Without the

SeGW).

An SeGW is configured and the





eNodeB from http://support.huawei.com.




3. Obtain the certificate from the root CA

for the operator.






eNodeB from http://

support.huawei.com.2. Back up the configuration file and




for the operator.



Local Commissioning (with the

SeGW).

A UTRPc is configured in the BBU. 1. Download the eNodeB software


eNodeB from http://

support.huawei.com.







SeGW).

BBU3900




47












l Entry of serial number in PKI's system white list.


screwdriver.


required keys.

Context

l Figure 7-12 shows the position of the UMPT in the BBU.

Figure 7-12 Position of the UMPT

l The UMPT is hot-swappable.



Procedure

Step 1 Before replacing the UMPT, instruct the M2000 administrator to perform the following

operations:

1. On the eNodeB, run the ULD LICENSE command to back up the license file.

2. On the eNodeB, run the BLK CELL command to block all the cells of the eNodeB.

NOTE



WARNING




Step 4 Disconnect the cables from the UMPT, as shown in Figure 7-13.

BBU3900




48




Step 5 Loosen the two M3 screws on the panel, raise the ejector levers, and then pull out the UMPT,


Figure 7-14 Removing the UMPT

2

1

Step 6 Install the new board, lower the ejector levers, tighten the screws on the board to 0.6 N·m (5.31

lbf·in.), and then reconnect the cables.


status of the indicators, see LMPT.

Step 8 Perform the following operations according to onsite conditions of the eNodeB:

BBU3900




49



Scenario Operation

No SeGW is configured, the LOFD-002004

Self-configuration feature is available, and

the eNodeB automatically establishes an OM

link to the M2000.

Inform the M2000 administrator that the

replacement is complete, and instruct the

administrator to perform the following

operations:

1. Load the eNodeB software, configuration

file, and license file following the

instructions in Upgrading NE Software

and Patches Through a Wizard.

2. Check whether any new alarms are

generated by the base station according to

the instructions in Browsing the Current

Alarm. Then handle all eNodeB alarms

according to the instructions in Browsing

Active Alarms or Events.

3. Synchronize the inventory information

manually following the instructions in


4. Ask the onsite engineers to perform

dialing tests to check whether the cells can

normally provide services.


Self-configuration feature is unavailable,

and the eNodeB cannot automatically

establish an OM link to the M2000.

Instruct the onsite maintenance personnel to

perform the following operations:

1. Plug a USB flash drive used for site

deployment into the USB port on the

LMPT. For details, see Downloading andActivating the Software, Data

Configuration File, and License File

Using a USB Flash Drive.

2. Load a commercial license following the

instructions in Installing the WiMAX

BTS (BTS3701B)/eNodeB License.





according to the instructions in BrowsingActive Alarms or Events.







BBU3900




50



Scenario Operation

An SeGW is configured, the LOFD-002004



link to the M2000.




operations:





2. Perform the following operations on the

M2000: Automatically Applying for a

Device Digital Certificate and Activating

a Device Digital Certificate. Note that the

eNodeB will apply for a device certificate

from the Certificate Authority (CA). After

the certificate is downloaded, activate the

certificate.













BBU3900




51



Scenario Operation







1. Plug a USB flash drive used for sitedeployment into the USB port on the

LMPT. For details, see Downloading and

Activating the Software, Data








the instructions in Browsing the CurrentAlarm. Then handle all eNodeB alarms









A UTRPc is configured in the BBU and the

eNodeB cannot automatically establish anOM link to the M2000.
























BBU3900




52




----End

Follow-up Procedure






The LTE main processing and transmission unit (LMPT) manages the entire eNodeB system in

terms of OM and signaling processing and provides system clock for the BBU3900.

Prerequisites

NOTE

This section involves the following scenarios:

l Scenario one: replacing the LMPT with a new LMPT

l Scenario two: replacing the LMPT with a UMPT

The replacement procedures in the two scenarios are the same. The following describes the procedure in

the first scenario.






l Make preparations according to onsite conditions of the eNodeB.







eNodeB from http://

support.huawei.com.




BBU3900




53











eNodeB from http://

support.huawei.com.






Local Commissioning (Without the

SeGW).






eNodeB from http://support.huawei.com.





for the operator.






eNodeB from http://

support.huawei.com.2. Back up the configuration file and




for the operator.




SeGW).

A UTRPc is configured in the BBU. 1. Download the eNodeB software


eNodeB from http://

support.huawei.com.







SeGW).

BBU3900




54












l The serial number of the board is in the whitelist of the PKI system.


screwdriver.


required keys.

Context

l Figure 7-15 shows the position of the LMPT in the BBU.

Figure 7-15 Position of the LMPT

TX

SFP0

R X T X

SFP1

RX

US B T S T ETH F E / GE 0 F E / GE1GPS

RST

RUN

ALM

ACT

LMPT

LMPT

l The LMPT is hot-swappable.



Procedure

Step 1 Before replacing the LMPT, instruct the M2000 administrator to perform the followingoperations:

1. On the eNodeB, run the ULD LICENSE command to back up the license file.

2. On the eNodeB, run the BLK CELL command to block all cells of the eNodeB.

NOTE



WARNINGTake proper ESD protection measures, for example, wear an ESD wrist strap or ESD gloves, to


Step 3 Record all cable connections on the panel of the LMPT to be replaced.

Step 4 Disconnect the cables from the LMPT, as shown in Figure 7-16.


BBU3900




55



Step 5 Loosen the two M3 screws on the panel, raise the ejector levers, and then pull out the LMPT,


Figure 7-17 Removing the LMPT

2

1

Step 6 Install the new board, lower the ejector levers, tighten the screws on the board panel to 0.6 N·m(5.31 lbf·in.), and reconnect the cables.


status of the indicators, see LMPT.

Step 8 Perform the following operations according to onsite conditions of the eNodeB:

Scenario Operation




link to the M2000.




operations:











3. Synchronize the inventory informationmanually following the instructions in





BBU3900




56



Scenario Operation


























BBU3900




57



Scenario Operation




link to the M2000.




operations:





2. Perform the following operations on the

M2000: Automatically Applying for a

Device Digital Certificate and Activating

a Device Digital Certificate. Note that the

eNodeB will apply for a device certificate

from the Certificate Authority (CA). After

the certificate is downloaded, activate the

certificate.













BBU3900




58



Scenario Operation


























A UTRPc is configured in the BBU and the

eNodeB cannot automatically establish anOM link to the M2000.
























BBU3900




59




----End

Follow-up Procedure





7.7 Replacing the WBBP

The WCDMA Baseband Process Unit (WBBP) is configured in the BBU and it processes baseband signals.

Prerequisites








screwdriver.


required keys.

Context

l Figure 7-18 shows the position of the WBBP in the BBU.

Figure 7-18 Position of the WBBP

WBBP

WBBP TX RX

CPRI0/EIH0 CPRI1/EIH1 CPRI2/EIH2

T X R X T X R XRUNALMACT

l The WBBP is hot-swappable.

l In convergence scenario, replacing the WBBPf which has the convergence function

interrupts the services of the peer mode. The services will resume after the replacing iscomplete.

BBU3900




60



Procedure

Step 1 Instruct the M2000 administrator to perform the following operations before replacing the

WBBP:

1. On the NodeB, run the BLK BRD command to block the WBBP.


WARNING




Step 4 Disconnect the CPRI cable from the WBBP, and then remove the optical module, as shown in

Figure 7-19.


Step 5 Loosen the two M3 screws on the panel, raise the ejector levers, and then pull out the WBBP,


Figure 7-20 Removing the WBBP

2

1


lbf·in.), reinstall the optical module, and reconnect the cables.

Step 7 Wait for about 15 minutes after the board is started, then check the status of the new board by

observing the status of indicators. For details about the status of the indicators, see WBBP.

Step 8 Inform the M2000 administrator that the replacement is complete, and instruct the administrator to perform the following operations:

BBU3900




61



1. On the NodeB, run the UBL BRD command to unblock the WBBP.






provide services.


----End

Follow-up Procedure


into a foam-padded carton or the packing box of the new component.l Fill in the fault form with detailed information about the replaced component.



The LTE baseband processing unit (LBBP) in the BBU3900 processes baseband signals and

CPRI signals.

Prerequisites








screwdriver.


required keys.

Context

l Figure 7-21 shows the position of the LBBP in the BBU.

Figure 7-21 Position of the LBBP

CPRI 0 CPRI 1 CPRI 2 CPRI 3 CPRI 4 CPRI5

T X R X T X R X T X R X TX R XT X R X TX R XLBBP RUN

ALMACT

LBBP

BBU3900




62



l The LBBP is hot-swappable.

Procedure

Step 1 Before replacing the LBBP, instruct the M2000 administrator to perform the following

operations:

1. On the eNodeB, run the BLK BRD command to block the LBBP.


WARNING



Step 3 Record all the CPRI cable connections on the panel of the board to be replaced.

Step 4 Disconnect CPRI cables from the LBBP, as shown in Figure 7-22.


Step 5 Loosen the two M3 screws on the panel, raise the ejector levers, and then pull out the LBBP, as


Figure 7-23 Removing the LBBP

2

1



Step 7 Wait for about 15 minutes after the board is started, then check the status of the new board byobserving the status of indicators. For details about the status of the indicators, see LBBP.

BBU3900




63





1. On the eNodeB, run the UBL BRD command to unblock the LBBP.


instructions in Browsing the Current Alarm. Then handle all eNodeB alarms according tothe instructions in Browsing Active Alarms or Events.




provide services.


----End

Follow-up Procedure

l Place the replaced component into the ESD box or bag. Then, place the ESD box or baginto a foam-padded carton or the packing box of the new component.



7.9 Replacing a UPEUA universal power and environment interface unit (UPEU) is configured in a BBU and it converts

-48 V DC or +24 V DC power into +12 V DC power.

Prerequisitesl To confirm the type of a faulty board, do as follows:







M3 Phillips screwdriver.


keys.

Context

l Figure 7-24 shows the position of a UPEU in the BBU.

Figure 7-24 Position of a UPEU

UPEU

BBU3900




64



l If the only one UPEU in the base station is faulty, replacing the UPEU interrupts power

supply to a BBU and accordingly interrupts services carried by the BBU. To avoid the

impact, perform Step 1to Step 8to replace the UPEU.

l If one of the two UPEUs in the base station is faulty, replacing the UPEU may cause afailure to monitor the external equipment. To avoid the impact, perform Step 2to Step 7to

replace the UPEU.

Procedure

Step 1 Before replacing a UPEU, ask the M2000 administrator to perform the following operations:

NOTE



mode.2. On the eNodeB, run the BLK CELL command to block all cells working in LTE mode.

3. On the BSC, run the LST GCELL command to query the configuration of all cells of the

base station, and run the SET GCELLADMSTAT command and set ADMSTAT to

LOCK to block these cells.

CAUTION

If a standby UPEU is not configured, this operation interrupts services provided by the NodeB.


WARNING



Step 3 Record all cable connections on the panel of the UPEU to be replaced.

Step 4 Disconnect the power cable, monitoring cable, and alarm cable from the UPEU, as shown inFigure 7-25.


Step 5 Remove the two M3 screws on the panel, and pull out the UPEU, as shown in Figure 7-26.

BBU3900




65



Figure 7-26 Removing the UPEU

12

Step 6 Install the new board, tighten the screws on the board to 0.6 N m (5.31 lbf in.), and reconnect

the cables.


status of the indicators, see UPEU.



NOTE






mode.

3. On the BSC, run the SET GCELLADMSTAT command and set ADMSTAT to

UNLOCK to unblock all cells of the BTS.













provide services.


----End

Follow-up Procedure




BBU3900




66




7.10 Replacing the UEIU

The Universal Environment Interface Unit (UEIU) provides channels for transmitting the

monitoring signals from external equipment to the BBU.

Prerequisites








screwdriver.


required keys.

Context

l Figure 7-27 shows the position of the UEIU in the BBU.

Figure 7-27 Position of the UEIU

UEIU

l The UEIU is hot-swappable.

l Replacing the UEIU may cause the failure to monitor the external equipment. Therefore,

the UEIU must be replaced within 5 minutes.

Procedure


WARNING




Step 3 Disconnect the monitoring cable and alarm cable from the UEIU. as shown in Figure 7-28.

BBU3900




67




Step 4 Loosen the two M3 screws on the panel, and pull out the UEIU, as shown in Figure 7-29.

Figure 7-29 Removing the UEIU

2

1

Step 5 Install the new board, tighten the screws on the board to 0.6 N·m (5.31 lbf·in.), and then reconnect

the cables.


to perform the following operations:NOTE










3. Check whether any new alarms are generated by the base station according to theinstructions in Browsing the Current Alarm. Then handle all eNodeB alarms according to





provide services.


----End

BBU3900




68



Follow-up Procedure





7.11 Replacing the FAN Unit

The FAN unit is located in the BBU. The FAN unit and the air intake box form a ventilation

loop, which ensures ventilation and heat dissipation. Replacing the FAN unit may lead to

overtemperature alarms due to interruption of heat dissipation in the BBU. The services,

however, are not affected.

Prerequisitesl To confirm the type of a faulty board, do as follows:







screwdriver.


required keys.

Context

l Figure 7-30 shows the position of the FAN unit in the BBU.

Figure 7-30 Position of the FAN unit

FAN

l The FAN unit is hot-swappable.

l Replacing the FAN unit may lead to overtemperature alarms due to interruption of heat

dissipation in the BBU. Therefore, the FAN unit must be replaced within 3 minutes.

Procedure


BBU3900




69



WARNING



Step 2 Loosen the two M3 screws on the panel, and then remove the FAN unit, as shown in Figure

7-31.

Figure 7-31 Removing the FAN

1 2

CAUTION

When removing the fan box, do not touch a rotating fan to avoid injury of your hands.

Step 3 Install a new module, tighten the screws on the module to 0.6 N·m (5.31 lbf·in.).

Step 4 Check the status of the indicators to determine whether the new module works properly. For

details about the status of the indicators, see FAN.



NOTE














BBU3900




70




provide services.


----End

Follow-up Procedure





7.12 Replacing a UTRP

A universal transmission processing unit (UTRP) provides ports for transmission.

Prerequisites






lQuery alarms reported by the base station. For details, see Browsing the Current Alarm.


M3 Phillips screwdriver.


keys.

Context

l Figure 7-32 shows the recommended position of a UTRP in the BBU.

Figure 7-32 Position of a UTRP

RUN

ALM

ACT

E1/T1(0-3)

UTRP

E1/T1(4-7)

UTRP

l The UTRP is hot-swappable.

l

A multi-mode base station supports co-transmission and the shared port for co-transmissionis located on the UTRP. Therefore, replacing the UTRP interrupts services of the peer mode.

BBU3900




71



Procedure

Step 1 Before replacing a UTRP, ask the M2000 administrator to perform the following operations:

NOTE


1. On the eNodeB, run the BLK CELL command to block all cells working in LTE mode.


mode.

3. On the BSC, run the SET GCELLADMSTAT command to block all cells working in

GSM mode.


WARNING



Step 3 Record all cable connections on the panel of the UTRP to be replaced.

Step 4 Disconnect the transmission cable from the UTRP. If a surge protection board is configured, its

cable also needs to be disconnected, as shown in Figure 7-33.


Step 5 Loosen the two M3 screws on the panel, raise the ejector levers, and pull out the UTRP, as shown

in Figure 7-34.

Figure 7-34 Removing the UTRP

BBU3900




72



Step 6 Set the DIP switches on the new board to the same as the settings of the DIP switches on the

replaced board. For details about the DIP switch, see UTRP.




status of the indicators, see UTRP.



NOTE






mode.

3. On the BSC, run the SET GCELLADMSTAT command to unblock all cells working in

GSM mode.








instructions in Browsing the Current Alarm. Then handle all eNodeB alarms according tothe instructions in Browsing Active Alarms or Events.




provide services.


----End

Follow-up Procedure





7.13 Replacing the USCU

The Universal Satellite card and Clock Unit (USCU) in the BBU receives clock signals, such as

Global Positioning System (GPS), remote global position system (RGPS), building integrated

timing supply (BITS), and M-1PPS signals. In addition, it transmits or receives 1PPS+TODclock signals.

BBU3900




73



Prerequisites








screwdriver.


required keys.

Context

l Figure 7-35 shows the position of the USCU in the BBU.

Figure 7-35 Position of the USCU

USCU

USCUALMALM

RUNRUN

ACT

ACT

TOD1

TOD1

GPS

RX RXTX TX

BITS

Y

RGPS

M1PPS

TOD0

GPSRX+ RX-TX+ TX-

BITS GRE E NI N

YE L L O W O UT

RGPS

M-1PPS

TOD0

1S 1SGNDPWR

1S+ 1S-GNDPWR

USCU

l The USCU is hot-swappable.

Procedure


WARNING




Step 3 Remove the GPS clock signal cable from the USCU, as shown in Figure 7-36.


BBU3900




74



Step 4 Loosen the two M3 screws on the panel, raise the ejector levers, and then pull out the USCU,


Figure 7-37 Removing the USCU

2

1




status of the indicators, see USCU.



NOTE



station can be checked and cleared on the M2000.1. Check whether any new alarms are generated by the base station according to the












provide services.


----End

Follow-up Procedure




BBU3900




75





WARNING



Step 3 Record all cable connections on the panel of the UBRI to be replaced.

Step 4 Disconnect CPRI cables from the board, as shown in Figure 7-39.


Step 5 Loosen the two M3 screws on the panel, raise the ejector levers, and pull out the UBRI, as shown

in Figure 7-40.

Figure 7-40 Removing the UBRI

2

1




status of the indicators, see UBRI.



NOTE






mode.

3. On the BSC, run the SET GCELLADMSTAT command and set ADMSTAT toUNLOCK to unblock all cells of the BTS.

BBU3900




77







instructions in Browsing the Current Alarm. Then handle all GBTS alarms according tothe instructions in Handling GBTS Alarms.







provide services.


----End

Follow-up Procedure





7.15 Replacing the UCIUThe Universal inter-Connection Infrastructure Unit (UCIU) interconnects BBUs. It forwards

control and synchronization information from one BBU to another.

Prerequisites








screwdriver.


required keys.

Context

l Figure 7-41 shows the position of the UCIU in the BBU.

BBU3900




78



Figure 7-41 Position of the UCIU

l The UCIU is hot-swappable.

l If the UCIU is faulty or is replaced, services carried by radio frequency (RF) modules in

GU or GL mode are affected. In this situation, services of one mode are restored

automatically. Services of the other mode can be restored only after the fault is rectified or

the UCIU is reset.

Procedure


WARNING




Step 3 Disconnect the interconnection cable between the optical ports on the UCIU, as shown in Figure

7-42.


Step 4 Loosen the two M3 screws on the panel, raise the ejector levers, and then pull out the UCIU, as


BBU3900




79



Figure 7-43 Removing the UCIU




status of the indicators, see UCIU.



NOTE
















provide services.


----End

Follow-up Procedure





BBU3900




80



7.16 Replacing the Optical Module

The optical module is used for the optical transmission between the BBU and other devices.

Prerequisites

l Confirm the type of a faulty board and do as follows:

– Run the DSP BTSOPTMODULE command on the BSC.

– Run the DSP OPTMODULE command on the NodeB.

– Run the DSP SFP command on the eNodeB.

– Confirm the type of the faulty optical module according to the Rate, Wavelength, and

Transmission mode fields in the query result and obtain an optical module of the same

type. Figure 7-44 shows the label on the optical module.

Figure 7-44 Label on the optical module

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

– If the software version does not support query of the type of the optical module by using

an MML command, obtain all types of optical modules.

l Obtain tools and materials, such as the ESD wrist strap or ESD gloves.

l Gain permission to access the site and obtain the required keys.

Context

l Figure 7-45 shows the position of the optical module on a board.

Figure 7-45 Position of the optical module

1

(1) Optical module

BBU3900




81



l Optical modules are hot-swappable.

l Replacing the optical module interrupts the services carried on this port.

Procedure

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

CAUTION



Step 2 If all types of optical modules get prepared, obtain an optical module of the same type or theoptical module that can replace the faulty optical module according to the label on the optical

module and spare part catalog.

NOTE

The optical modules to be installed must have a matching rate with the corresponding CPRI port.

Step 3 Record the position of the faulty optical module on the board.

Step 4 Press the latch on the optical cable connector, and remove the connector from the faulty optical

module, as shown in Figure 7-46.


WARNING

Do not look into the optical module without eye protection after the optical cable is removed

from the optical module.

BBU3900




82



Step 5 Turn the puller on the faulty optical module outwards, hold the puller and take the faulty optical

module out of the slot, as shown in Figure 7-47.

Figure 7-47 Removing the optical module

Step 6 Install a new optical module on the BBU3806, and fasten the puller.

Step 7 Remove the dustproof caps from the new optical module, and insert the optical cable connector

into the new optical module.

Step 8 Check whether the transmission is proper according to the status of the indicators on the board.For details about the status of the indicators on the board, see the related hardware description.


----End

Follow-up Procedure





BBU3900




83



8 Adding Components in the BBU3900

About This Chapter

This chapter describes how to add new boards in the BBU during the maintenance.

8.1 Adding a UPEU

A UPEUc needs to be added of the power required by the BBU exceeds the power supported by

the UPEU.

8.2 Adding a WBBP

This section describes how to install a WCDMA baseband processing unit (WBBP) when a

WBBP is required.

8.3 Adding a UTRP

This section describes how to install a Universal Transmission Processing unit (UTRP) when a

UTRP is required.

BBU3900

Hardware Maintenance Guide 8 Adding Components in the BBU3900



84



8.1 Adding a UPEU

A UPEUc needs to be added of the power required by the BBU exceeds the power supported by

the UPEU.

NOTE

If the BBU is installed in an outdoor mini box (OMB) or indoor mini box (IMB03) with an AC power

supply, the BBU cannot be equipped with two UPEUs.

8.1.1 Adding a UPEUc

This section describes how to add a UPEUc when a UPEU is already installed in the BBU.

Prerequisites

l The tools and materials are available, such as the ESD wrist strap or ESD gloves and M3screwdriver.


required keys.

Context

A UPEUc needs to be added if the power required by the BBU exceeds the power supported by

the UPEU.

A UPEUa is already installed in slot 19 and the new UPEUc can be installed in slot 18, as shown

in Figure 8-1.

Figure 8-1 Slot for holding the new UPEUc

Procedure


WARNING



Step 2 Install the UPEUc in slot 18 and tighten the screws on the panel to 0.6 N·m (5.31 lbf·in.), asshown in Figure 8-2.

BBU3900




85



Figure 8-2 Installing the UPEUc

Step 3 Install a power cable for the UPEUc. For details about the operation, see the related installation

guide.

1. Connect the 3V3 power connector at one end of the power cable to the -48V port on the

UPEUc, and then tighten the screws on the connector to 0.25 N·m (2.21 lbf·in.).

2. Connect the other end of the power cable to the power supply equipment onsite.

Step 4 Power on the UPEUc.



Step 6 Perform following operations on the LMT:

1. On the NodeB, run the ADD BRD command to configure the newly added UPEUc.

2. On the eNodeB, run the ADD BRD command to configure the newly added UPEUc.

3. On the BSC, run the ADD BTSBRD command to configure the newly added UPEUc.


----End

8.1.2 Replacing a UEIU with a UPEUc

This section describes how to replace a Universal Environment Interface Unit (UEIU) with a

Universal Power and Environment Interface Unit REV:C (UPEUc) on a BBU where a Universal

Power and Environment Interface Unit REV:A (UPEUa) is also installed.

Prerequisites


screwdriver.


required keys.

BBU3900




86



Context

As shown in Figure 8-3, a UPEUa is installed in slot 19 and the UEIU to be replaced is installed

in slot 18.

Figure 8-3 Slot housing the UEIU to be replaced

Procedure

Step 1 Instruct the M2000 administrator to perform the following operations:

1. Run the DSP BRD command to check whether the UEIU has been configured.

2. Run the RMV BRD command to clear data about the UEIU.


WARNING








2

1

BBU3900




87



Step 6 Install a UPEUc in slot 18 and tighten the screws on the board to 0.6 N·m (5.31 lbf·in.), as shown

in Figure 8-6.



guide.




Step 8 Connect the cables to corresponding ports on the UPEUc according to the cable connection

records for the UEIU.

Step 9 Power on the UPEUc.



Step 11 Perform the following operations on the LMT:





----End

Follow-up Procedure

Place the replaced component into the ESD box or bag. Then, place the ESD box or bag into a

foam-padded carton or the packing box of the new component.

BBU3900




88



8.1.3 Replacing a UEIU and a UPEUa with Two UPEUc Boards

This section describes how to replace a Universal Environment Interface Unit (UEIU) and a

Universal Power and Environment Interface Unit REV:A (UPEUa) with two Universal Power

and Environment Interface Unit REV:C (UPEUc) boards on a BBU.

Prerequisites


screwdriver.


required keys.

Context

As shown in Figure 8-7, a UEIU is installed in slot 18 and a UPEUa is installed in slot 19.

Figure 8-7 Slots housing the UEIU and UPEUa

Procedure

Step 1 Instruct the M2000 administrator to perform the following operations:

1. Run the DSP BRD command to check whether the UEIU has been configured.

2. Run the RMV BRD command to clear data about the UEIU.


WARNING



Step 3 Record all the cable connections on the panels of the UEIU and UPEUa.



BBU3900




89





2

1

Step 6 Install a UPEUc in slot 18 and tighten the screws on the board to 0.6 N·m (5.31 lbf·in.), as shownin Figure 8-10.



guide.

1. Connect the 3V3 power connector at one end of the power cable to the -48V port on theUPEUc, and then tighten the screws on the connector to 0.25 N·m (2.21 lbf·in.).


Step 8 Connect the cables to corresponding ports on the UPEUc that has replaced the UEIU based on

the cable connection records for the UEIU.

Step 9 Power on the UPEUc installed in slot 18.

Step 10 Power off the UPEUa installed in slot 19.

Step 11 Disconnect the power cable, monitoring cable, and alarm cable from the UPEUa, as shown in

Figure 8-11.

BBU3900




90




Step 12 Remove the two M3 screws on the panel, and pull out the UPEU, as shown in Figure 8-12.

Figure 8-12 Removing the UPEU

12


in Figure 8-13.

Figure 8-13 Installing a UPEUc


guide.




Step 15 Connect the cables to corresponding ports on the UPEUc that has replaced the UPEUa based on

the cable connection records for the UPEUa.


Step 17 Check the status of the new board by observing the status of indicators. For details about thestatus of the indicators, see UPEU.

BBU3900




91








----End

Follow-up Procedure

Place the replaced component into the ESD box or bag. Then, place the ESD box or bag into a

foam-padded carton or the packing box of the new component.

8.1.4 Replacing Two UPEUa Boards with Two UPEUc Boards

This section describes how to replace two Universal Power and Environment Interface UnitREV:A (UPEUa) boards with two Universal Power and Environment Interface Unit REV:C

(UPEUc) boards on a BBU.

Prerequisites


screwdriver.


required keys.

Context

As shown in Figure 8-14, two UPEUa boards to be replaced are installed in slots 18 and 19,

respectively.

Figure 8-14 Slots housing two UPEUa boards

Procedure


WARNING



BBU3900




92



Step 2 Record all the cable connections on the panels of the two UPEUa boards.


Step 4 Disconnect cables from the UPEUa installed in slot 18, as shown in Figure 8-15.


Step 5 Uninstall the UPEUa installed in slot 18, as shown in Figure 8-16.

Figure 8-16 Uninstalling the UPEUa installed in slot 18


in Figure 8-17.


BBU3900




93



Step 7 Connect the cables to corresponding ports on the UPEUc newly installed in slot 18 based on the

cable connection records for the UPEUa that has been uninstalled from slot 18.



Step 10 Disconnect cables from the UPEUa installed in slot 19, as shown in Figure 8-15.

Step 11 Uninstall the UPEUa installed in slot 19, as shown in Figure 8-18.

Figure 8-18 Uninstalling the UPEUa installed in slot 19

1

2


in Figure 8-19.

Figure 8-19 Installing a UPEUc in slot 19

Step 13 Connect the cables to corresponding ports on the UPEUc newly installed in slot 19 based on the

cable connection records for the UPEUa that has been uninstalled from slot 19.





----End

Follow-up Procedure

Place the replaced component into the ESD box or bag. Then, place the ESD box or bag into afoam-padded carton or the packing box of the new component.

BBU3900




94



8.2 Adding a WBBP

This section describes how to install a WCDMA baseband processing unit (WBBP) when a

WBBP is required.

Prerequisites


screwdriver.


required keys.

Context

If the power required by the BBU exceeds the power supported by the UPEU after a WBBP isadded, install a UPEUc before adding the WBBP. For details about how to install a UPEUc, see

8.1 Adding a UPEU. In some hot areas, if a second UPEU is installed in the BBU in an outdoor

AC cabinet, the FAN unit in the BBU must be replaced with a FANc unit that operates at a high

speed. For details about how to replace a FAN unit, see 7.11 Replacing the FAN Unit.

NOTE

In a hot area, the number of days with the maximum temperature higher than 45°C (113°F) exceeds 10 in

a year.

Procedure


WARNING



Step 2 Install the WBBP in the corresponding slot, as shown in Figure 8-20.

NOTE

For details about the configuration principle of the WBBP, see Slot Assignment of the BBU3900.

Figure 8-20 Installing the WBBP

BBU3900




95



Step 3 If a common public radio interface (CPRI) cable needs to be connected to the WBBP, install the

CPRI cable following the instructions in the related installation guide.

Step 4 On the LMT, run the ADD BRD command to configure the newly added WBBP.


----End

8.3 Adding a UTRP

This section describes how to install a Universal Transmission Processing unit (UTRP) when a

UTRP is required.

Prerequisitesl The tools and materials are available, such as the ESD wrist strap or ESD gloves and M3

screwdriver.


required keys.

Procedure


WARNING



Step 2 Install the UTRP in the correct slot and tighten the screws on the board to 0.6 N·m (5.31 lbf·in.),


NOTE

For details about the configuration principle of the UTRP, see Slot Assignment of the BBU3900.

Figure 8-21 Installing the UTRP

BBU3900




96



Step 3 Install a transmission cable for the UTRP. For details about the operation, see the related

installation guide.


1. On the BSC, run the ADD BTSBRD command to configure the newly added UTRP.

2. On the NodeB, run the ADD BRD command to configure the newly added UTRP.

3. On the eNodeB, run the ADD BRD command to configure the newly added UTRP.


----End

BBU3900




97



9 Replacing SLPU Components

About This Chapter

During the SLPU maintenance, the SLPU components, such as UELP, and UFLP, can be

replaced as required

9.1 Replacing a UELP

Each universal E1/T1 lightning protection unit (UELP) provides surge protection for four paths

of E1/T1 signals.

9.2 Replacing the UFLP

The Universal FE Lightning Protection unit (UFLP) provides surge protection for a base station.

BBU3900

Hardware Maintenance Guide 9 Replacing SLPU Components



98



9.1 Replacing a UELPEach universal E1/T1 lightning protection unit (UELP) provides surge protection for four paths

of E1/T1 signals.

Prerequisites








screwdriver.l Associated personnel have gained permission to access the site and have obtained the

required keys.

Context

l Figure 9-1 shows the position of the UELP in the SLPU.

Figure 9-1 Position of a UELP

SLPU

UELP

S0INSIDE OUTSIDE

S1

S2

S3

UELP

l The UELP is hot-swappable.

Procedure


CAUTION



Step 2 Record all cable connections on the panel of the UELP to be replaced.

Step 3 Disconnect the transmission cables from the UELP, as shown in Figure 9-2.


BBU3900




99



Step 4 Remove the two M3 screws on the panel, and pull out the UELP, as shown in Figure 9-3.

Figure 9-3 Removing the UELP

1

21

Step 5 Set the DIP switches on the new board following the settings of the DIP switches on the replaced

board. For details about the DIP switch, see UELP.

Step 6 Install the new board, tighten the screws on the board to 0.6 N·m (5.31 lbf·in.), and reconnect

the cables.

Step 7 Perform following operations on the M2000:

NOTE




1. Check whether any new alarms are generated by the base station according to theinstructions in Browsing the Current Alarm. Then handle all NodeB alarms according to











provide services.


----End

Follow-up Procedure





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100



9.2 Replacing the UFLPThe Universal FE Lightning Protection unit (UFLP) provides surge protection for a base station.

Prerequisites








screwdriver.

l Associated personnel have been permitted to access the site and obtained the required keys.

Context

l Figure 9-4 shows the position of the UFLP in the SLPU.

Figure 9-4 Position of the UFLP

SLPUS0

S1

S2

S3

FE0

INSIDE OUTSIDE

FE1 FE0 FE1UFLP

UFLP

l The UFLP is hot-swappable.

Procedure


CAUTION




Step 3 Disconnect transmission cables from the UFLP, as shown in Figure 9-5.


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101



Step 4 Loosen the two M3 screws on the panel, and then pull out the UFLP, as shown in Figure 9-6.

Figure 9-6 Removing the UFLP

1

21

Step 5 Install the new board, tighten the screws on the board to 0.6 N·m (5.31 lbf·in.), and then reconnect

the cables.

Step 6 Perform the following operations on the M2000:

NOTE






the instructions in Handling NodeB Alarms.2. Check whether any new alarms are generated by the base station according to the







S h i i I D

BBU3900


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