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

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 mentioned in this document are the property of of their respective respective holders. 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 document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, 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 recommendations in this document do not constitute the warranty of any kind, express or implied.

Huawei Technologies Co., Ltd. Address:

Huawei Industrial Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China

Website:

http://www.huawei.com

Email:

[email protected]

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Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

i

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 mentioned in this document are the property of of their respective respective holders. 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 document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, 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 recommendations in this document do not constitute the warranty of any kind, express or implied.

Huawei Technologies Co., Ltd. Address:

Huawei Industrial Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China

Website:

http://www.huawei.com

Email:

[email protected]

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i

BBU3900 Hardware Maintenance Guide

About This Document

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, maintenance, and power-on and power-off operations. operations. 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

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 Maintenance Guide. 2 Maintenance Items for BBU3900 Hardware Issue 03 (2012-06-20)


ii


About This Document

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 t o determine whether to perform a normal power-off or emergent 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 BBU390 0

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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About This Document

Symbol

Description Indicates a potentially hazardous situation, which if not avoided, could result in equipment damage, data loss, performance degradation, degradation, or unexpected 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.

Boldface

Names of files, directories, directories, folders, and users users are in boldface. For example, log in as user root. Book titles are in italics.

Italic Courier New

Examples of information displayed on the screen are in Courier New.

Command Conventions

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

Convention

Description

Boldface

The keywords of a command line are in boldface.

Italic

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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 i tem is selected.

{ x | y | ... } *

Optional items are grouped in braces and separated by vertical bars. A minimum of one item or a maximum of all items can be selected.

[ x | y | ... ] *

Optional items are grouped in brackets and separated by vertical bars. Several items or no item can be selected.


iv


About This Document

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.

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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. position.


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Contents

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 f or 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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Contents

7.15 Replacing the UCIU.......................................................................................................................................78 7.16 Replacing the Optical Module........................................................................................................................81

8 Adding Components in the BBU3900......................................................................................84 8.1 Adding a UPEU................................................................................................................................................85 8.1.1 Adding a UPEUc.....................................................................................................................................85 8.1.2 Replacing a UEIU with a UPEUc............................................................................................................86 8.1.3 Replacing a UEIU and a UPEUa with Two UPEUc Boards...................................................................89 8.1.4 Replacing Two UPEUa Boards with Two UPEUc Boards.....................................................................92 8.2 Adding a WBBP...............................................................................................................................................95 8.3 Adding a UTRP................................................................................................................................................96

9 Replacing SLPU Components...................................................................................................98 9.1 Replacing a UELP............................................................................................................................................99 9.2 Replacing the UFLP.......................................................................................................................................101

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1 Changes in the BBU3900 Hardware Maintenance Guide

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:

Topic

Change Description

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

7.2 Replacing the UMPTa1 7.4 Replacing a GTMU

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l

Add the steps of backing up the configuration file in the prerequisites


1


1 Changes in the BBU3900 Hardware Maintenance Guide

Topic

Change Description

7.7 Replacing the WBBP

l

Add the steps of checking for alarms in the prerequisites

l

Add the time estimation for how long need the 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:

Topic

Change Description

7.6 Replacing the LMPT

Some descriptions are optimized.

7.5 Replacing the UMPTa2/UMPTa6

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

Compared with issue MBTS V100R004C00, WCDMA-NodeB V200R013C00, and GSM-BTS V100R013C00, no information is changed. Compared with issue MBTS V100R004C00, WCDMA-NodeB V200R013C00, and GSM-BTS V100R013C00, this issue deleted the following new topics: l

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Replacing the SLPU


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2 Maintenance Items for BBU3900 Hardware

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

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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.


Check whether the hardware is clean.

The hardware surface is clean, and the inside of cabinet is not dusty.

Check indicators.


Check whether indicators on the hardware are normal.

There is no indicator-related alarm.


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2 Maintenance Items for BBU3900 Hardware

Item

Checking Frequency

Operation Guide

Reference Standard

Check the ambient temperature of the cabinet.


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

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 t o 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 i n 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


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 Baseband processing board

l

The RUN indicator is on for 1s and off for 1s,

l

The ALM indicator is steady off,

UTRP

The BBU3900 is functioning properly. End the task.

USCU FAN

The STATE indicator is blinking green (on for 1s and off for 1s).

UPEU


The indicators are in other status.

The BBU3900 is faulty. Clear the fault, and then go to Step 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.

Procedure Step 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 You need to perform an emergent power-off emergent scenarios such as a fire, smoke, or by referring toStep 3. water damage,

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

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 . Issue 03 (2012-06-20)


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

WARNING

Take proper ESD protection measures, for example, put on an ESD wrist strap or ESD gloves, to prevent electrostatic damage to the boards, modules, or 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 t he 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.

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Log in to the SMT, and configure the static IP data according to the instructions in the GSM SMT User Guide. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

9



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 i n 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.

5.

Check whether any new alarms are generated by the base station according to the instructions in Browsing the Current Alarm. Then handle all GBTS alarms according to the instructions in Handling GBTS Alarms.

6.

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.

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

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

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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


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.

l


l


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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.

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.

l

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

Context

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

1

(1) AC/DC power equipment

l

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


14



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

4 3

2

1

(1) Power distribution unit (PDU)

l

(2) Power supply unit (PSU)

(3) Power monitoring unit (PMU)

(4) Subrack

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

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.

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. Step 2 Put on an ESD wrist strap or ESD gloves.

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.

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Loosen the M3 screw from the PDU panel, and remove the PDU, as shown in Figure 5-8.


16



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.


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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Figure 5-12 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 l bf·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 the indicators 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.



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Place the replaced component into an ESD box or bag. Then, place the ESD box or bag into a foam-padded carton or the packing box of the new component. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

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l


l


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.

Prerequisites l


l

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

l


l

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

Context

Figure 5-13 Position of the DCDU-03B

DCDU

l

Replacing 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. Step 2 Put on an ESD wrist strap or ESD gloves.

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CAUTION


Step 3 Record all the cable connections on the panel of the module to be replaced. Step 4 Disconnect the power cables from the DCDU-03B, as shown in Figure 5-14. Figure 5-14 Disconnecting the cables

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

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



l


l


5.4 Replacing the AC Surge Protection Box The AC surge protection box provides surge protection for the input AC power.

Prerequisites l


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


l

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

Context

Figure 5-16 Position of the AC surge protection box

1

(1) AC surge protection box

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BBU3900 Hardware Maintenance Guide 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. Step 2 Put on an ESD wrist strap or ESD gloves.

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 shown in Figure 5-17. Figure 5-17 Disconnecting the cables

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

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



l


l


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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. 6.1 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. 6.2 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.

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6.1 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.

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


l

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

Context

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

(1) AC/DC power equipment

l

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


26



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

4 3

2

1

(1) Power distribution unit (PDU)

l

(2) Power supply unit (PSU)

(3) Power monitoring unit (PMU)

(4) Subrack

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

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.

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. Step 2 Put on an ESD wrist strap or ESD gloves.

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.


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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 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.

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Loosen the M3 screw from the PDU panel, and remove the PDU, as shown in Figure 6-5.


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

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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.


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.

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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 l bf·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 the indicators 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.



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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. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

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l


l


6.2 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.

Prerequisites l


l

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

l


l

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

Context

Figure 6-10 Position of the DCDU-03B

(1) DCDU-03B

Procedure Step 1 Power off the DCDU-03B. Step 2 Put on an ESD wrist strap or ESD gloves.

CAUTION


Step 3 Record all the cable connections on the panel of the module to be replaced. Issue 03 (2012-06-20)


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

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. Step 8 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End Issue 03 (2012-06-20)


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7 Replacing the Components in the BBU3900

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. 7.2 Replacing the UMPTa1 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 resources on other boards. 7.4 Replacing a GTMU 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. 7.5 Replacing the UMPTa2/UMPTa6 The universal main processing and transmission unit (UMPT) processes signaling messages and manages resources on other boards. 7.6 Replacing the LMPT 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. 7.8 Replacing the LBBP Issue 03 (2012-06-20)


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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.

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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 i nformation 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 t he 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

7.2 Replacing the UMPTa1 The universal main processing and transmission unit (UMPT) processes signals and manages resources on other boards.

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


l


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l


l

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

Context

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 cotransmission 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 t he 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.

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Figure 7-3 Disconnecting the cables

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.

2.


3.

Synchronize the inventory information manually following the instructions in Synchronizing Inventory Data.

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4.


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



Place the replaced component into an ESD box or bag. Then, place the ESD box or bag into a carton padded with foam or i nto the packing box of the new module.

l


l


7.3 Replacing the WMPT The WCDMA main processing and transmission unit (WMPT) processes signals and manages resources on other boards.

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





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


l


l


l

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

Context

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Figure 7-5 Position of the WMPT in the BBU

TX

WMPT ETH

FE0

RX

FE1

RUN ALM ACT

USBTST

E1/T1

RST

GPS

WMPT

l

The WMPT is hot-swappable.

l

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

l


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. Figure 7-6 Disconnecting the cables

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. Issue 03 (2012-06-20)


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


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

2.


3.


4.




Place the replaced component into an ESD box or bag. Then, place the ESD box or bag into a carton padded with foam or i nto the packing box of the new module.

l


l


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7.4 Replacing a GTMU 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


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.

l

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

l


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

CPRI0

TX0

RX0

TX1

1

RX1 T X2

2

CPRI2

RX2

TX3

3

RX3 TX4

4

CPRI4

RX4

TX5

5

RX5

LIU0LIU2

LIU1LIU3 CPRI1

CPRI3

TX

ETH

FE0

FE1

CPRI5

RX

RUN ALM ACT

USBTST

E1/T1

RST

GTMU

l

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The GTMU is hot-swappable. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

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l


If a multi-mode base station supports co-transmission and the shared port for cotransmission 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). In a multi-mode base station using t he 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 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


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. Figure 7-9 Disconnecting the cables

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

1 2

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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.

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


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Run the SET GCELLADMSTAT command and set ADMSTAT to UNLOCK to unblock all cells of the BTS. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

45



2.


3.


4.





l


l


7.5 Replacing the UMPTa2/UMPTa6 The universal main processing and transmission unit (UMPT) processes signaling messages and manages resources on other boards.

Prerequisites l


– 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.


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.

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Scenario

Preparation

No SeGW is configured and the LOFD-002004 Self-configuration feature is unavailable.

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. 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 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. 3. Obtain the certificate from the root CA for the operator.

An SeGW is configured and the LOFD-002004 Self-configuration feature is unavailable.

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. 3. Obtain the certificate from the root CA for the operator. 4. Prepare a USB flash drive. For details, see Preparing the USB Flash Drive for Local Commissioning (with the SeGW).

A UTRPc is configured in the BBU.

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. 3. Prepare a USB flash drive. For details, see Preparing the USB Flash Drive for Local Commissioning (with the SeGW).

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l


l

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

l


l


l

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

Context

Figure 7-12 Position of the UMPT

l

The UMPT is hot-swappable.

l


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 3 Record all the cable connections on the panel of the module to be replaced. Step 4 Disconnect the cables from the UMPT, as shown in Figure 7-13.

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Step 5 Loosen the two M3 screws on the panel, raise the ejector levers, and then pull out the UMPT, as shown in Figure 7-14. 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.

Step 7 Check the status of the new board by observing the status of indicators. For details about the status of the indicators, see LMPT.

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

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

No SeGW is configured, the LOFD-002004 Instruct the onsite maintenance personnel to perform the following operations: Self-configuration feature is unavailable, and the eNodeB cannot automatically 1. Plug a USB flash drive used for site establish an OM link to the M2000. deployment into the USB port on the LMPT. For details, see Downloading and Activating 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. 3. 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. 4. Synchronize the inventory information manually following the instructions in Synchronizing Inventory Data. 5. Ask the onsite engineers to perform dialing tests to check whether the cells can normally provide services.

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Scenario

Operation

An 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. 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. 3. 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. 4. Synchronize the inventory information manually following the instructions in Synchronizing Inventory Data. 5. Ask the onsite engineers to perform dialing tests to check whether the cells can normally provide services.

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Scenario

Operation

An SeGW is configured, the LOFD-002004 Instruct the onsite maintenance personnel to perform the following operations: Self-configuration feature is unavailable, and the eNodeB cannot automatically 1. Plug a USB flash drive used for site establish an OM link to the M2000. deployment into the USB port on the LMPT. For details, see Downloading and Activating 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. 3. 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. 4. Synchronize the inventory information manually following the instructions in Synchronizing Inventory Data. 5. Ask the onsite engineers to perform dialing tests to check whether the cells can normally provide services. A UTRPc is configured in the BBU 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 and Activating 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. 3. 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. 4. Synchronize the inventory information manually following the instructions in Synchronizing Inventory Data. 5. Ask the onsite engineers to perform dialing tests to check whether the cells can normally provide services.

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l


l


7.6 Replacing the LMPT 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.

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.

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Scenario

Preparation

No SeGW is configured and the LOFD-002004 Self-configuration feature is unavailable.

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. 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 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. 3. Obtain the certificate from the root CA for the operator.

An SeGW is configured and the LOFD-002004 Self-configuration feature is unavailable.

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. 3. Obtain the certificate from the root CA for the operator. 4. Prepare a USB flash drive. For details, see Preparing the USB Flash Drive for Local Commissioning (with the SeGW).

A UTRPc is configured in the BBU.

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. 3. Prepare a USB flash drive. For details, see Preparing the USB Flash Drive for Local Commissioning (with the SeGW).

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l


l

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

l


l


l

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

Context

Figure 7-15 Position of the LMPT

LMPT TX

RX

SFP0

TX

RX

SFP1

RUN ALM ACT USB TST

ETH

FE/GE0

FE/GE 1

RST

GPS

LMPT

l

The LMPT is hot-swappable.

l


Procedure Step 1 Before replacing the LMPT, 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 cells of the eNodeB. NOTE



WARNING


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. Figure 7-16 Disconnecting the cables

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Step 5 Loosen the two M3 screws on the panel, raise the ejector levers, and then pull out the LMPT, as shown in Figure 7-17. Figure 7-17 Removing the LMPT

2 1


Step 7 Check the status of the new board by observing the status of indicators. For details about the status of the indicators, see LMPT.

Step 8 Perform the following operations according to onsite conditions of the eNodeB: 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 Synchronizing Inventory Data. 4. Ask the onsite engineers to perform dialing tests to check whether the cells can normally provide services.

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Scenario


Operation

No SeGW is configured, the LOFD-002004 Instruct the onsite maintenance personnel to perform the following operations: Self-configuration feature is unavailable, and the eNodeB cannot automatically 1. Plug a USB flash drive used for site establish an OM link to the M2000. deployment into the USB port on the LMPT. For details, see Downloading and Activating 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. 3. 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. 4. Synchronize the inventory information manually following the instructions in Synchronizing Inventory Data. 5. Ask the onsite engineers to perform dialing tests to check whether the cells can normally provide services.

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Scenario

Operation

An 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. 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. 3. 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. 4. Synchronize the inventory information manually following the instructions in Synchronizing Inventory Data. 5. Ask the onsite engineers to perform dialing tests to check whether the cells can normally provide services.

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Scenario

Operation

An SeGW is configured, the LOFD-002004 Instruct the onsite maintenance personnel to perform the following operations: Self-configuration feature is unavailable, and the eNodeB cannot automatically 1. Plug a USB flash drive used for site establish an OM link to the M2000. deployment into the USB port on the LMPT. For details, see Downloading and Activating 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. 3. 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. 4. Synchronize the inventory information manually following the instructions in Synchronizing Inventory Data. 5. Ask the onsite engineers to perform dialing tests to check whether the cells can normally provide services. A UTRPc is configured in the BBU 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 and Activating 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. 3. 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. 4. Synchronize the inventory information manually following the instructions in Synchronizing Inventory Data. 5. Ask the onsite engineers to perform dialing tests to check whether the cells can normally provide services.

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

l


l


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

Prerequisites l





l


l


l

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

Context

Figure 7-18 Position of the WBBP

WBBP

TX

RX T X

CPRI0 /EIH 0

RXTX

CPRI1 /EIH 1

RX

RUN ALM ACT

CPRI2/EIH2

WBBP

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 is complete.

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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 3 Record all the cable connections on the panel of the module to be replaced. Step 4 Disconnect the CPRI cable from the WBBP, and then remove the optical module, as shown in Figure 7-19. Figure 7-19 Disconnecting the cables

Step 5 Loosen the two M3 screws on the panel, raise the ejector levers, and then pull out the WBBP, as shown in Figure 7-20. Figure 7-20 Removing the WBBP

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.), 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: Issue 03 (2012-06-20)


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1.

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

2.


3.


4.





l


l


7.8 Replacing the LBBP The LTE baseband processing unit (LBBP) in the BBU3900 processes baseband signals and CPRI signals.

Prerequisites l





l


l


l

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

Context

Figure 7-21 Position of the LBBP

LBBP

TX

RXTX

CPRI 0

R XT X

CPRI 1

R X TX

CPRI 2

R XT X

CPRI 3

R X TX

CPRI 4

RX

RUN ALM ACT

CPRI5

LBBP

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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. Figure 7-22 Disconnecting the cables

Step 5 Loosen the two M3 screws on the panel, raise the ejector levers, and then pull out the LBBP, as shown in Figure 7-23. 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 by observing the status of indicators. For details about the status of the indicators, see LBBP. Issue 03 (2012-06-20)


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

2.


3.


4.





l


l


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.

Prerequisites l





l


l


l

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

Context Figure 7-24 Position of a UPEU

UPEU

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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 a failure 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


1.

On the NodeB, run the BLK LOCELL command to block all cells working in UMTS 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 in Figure 7-25. Figure 7-25 Disconnecting the cables

Step 5 Remove the two M3 screws on the panel, and pull out the UPEU, as shown in Figure 7-26. Issue 03 (2012-06-20)


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Figure 7-26 Removing the UPEU

1 2

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

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


1.


2.


3.


4.


5.


6.


7.


8.





l


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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 l





l


l


l

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

Context

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.


WARNING


Step 2 Record all the cable connections on the panel of the module to be replaced. Step 3 Disconnect the monitoring cable and alarm cable from the UEIU. as shown in Figure 7-28. Issue 03 (2012-06-20)


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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

1 2

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.



1.


2.


3.


4.


5.



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l


l


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.

Prerequisites l





l


l


l

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

Context

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 Step 1 Put on an ESD wrist strap or ESD gloves. Issue 03 (2012-06-20)


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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.



1.


2.


3.


4.


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5.






l


l


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

Prerequisites l





l


l


l

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

Context

Figure 7-32 Position of a UTRP UTRP UTRP

RUN ALM ACT

E1/T1(0-3)

E1/T1(4-7)

l

The UTRP is hot-swappable.

l

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

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


1.


2.


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. Figure 7-33 Disconnecting the cables

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

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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.


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



1.


2.


3.

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

4.


5.


6.


7.


8.





l


l


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. Issue 03 (2012-06-20)


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Prerequisites l





l


l


l

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

Context

Figure 7-35 Position of the USCU USCU

USCU

GPS

Y E

RGPS

l

G R E E N I N

RX+ RX-TX+ TX- 1S+ 1S-GNDPWR L L

O W O U T

TOD0

M-1PPS

BITS

RUN ALM ACT

TOD1

The USCU is hot-swappable.


WARNING


Step 2 Record all the cable connections on the panel of the module to be replaced. Step 3 Remove the GPS clock signal cable from the USCU, as shown i n Figure 7-36. Figure 7-36 Disconnecting the cables

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Step 4 Loosen the two M3 screws on the panel, raise the ejector levers, and then pull out the USCU, as shown in Figure 7-37. Figure 7-37 Removing the USCU

2 1


Step 6 Check the status of the new board by observing the status of indicators. For details about the status of the indicators, see USCU.



1.


2.


3.


4.


5.





l


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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.

Prerequisites l





l


l


l

Figure 7-38 shows the position of a UBRI in a BBU.

Context

Figure 7-38 Position of a UBRI in a BBU

UBRI

TX

RXTX

R XT X

R X TX

R XT X

R XT X

RX

RUN ALM ACT CPRI 0

CPRI 1

CPRI 2

CPRI 3

CPRI 4

CPRI5

UBRI

l

The UBRI is hot-swappable.

Procedure Step 1 Before replacing a UBRI, ask the M2000 administrator to perform the following operations: NOTE


1.


2.


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.

Step 2 Put on an ESD wrist strap or ESD gloves. Issue 03 (2012-06-20)


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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. Figure 7-39 Disconnecting the cables

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


Step 7 Check the status of the new board by observing the status of indicators. For details about the status of the indicators, see UBRI.



1.


2.


3.


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4.


5.


6.


7.


8.





l


l


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.

Prerequisites l





l


l


l

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

Context

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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.


WARNING


Step 2 Record all the cable connections on the panel of the module to be replaced. Step 3 Disconnect the interconnection cable between the optical ports on the UCIU, as shown in Figure 7-42. Figure 7-42 Disconnecting the cables

Step 4 Loosen the two M3 screws on the panel, raise the ejector levers, and then pull out the UCIU, as shown in Figure 7-43.

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Figure 7-43 Removing the UCIU


Step 6 Check the status of the new board by observing the status of indicators. For details about the status of the indicators, see UCIU.



1.


2.


3.


4.


5.





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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.

l

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

Context

Figure 7-45 Position of the optical module

1

(1) Optical module

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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 the optical 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. Figure 7-46 Disconnecting the cables

WARNING

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

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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.




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8 Adding Components in the BBU3900

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.

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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


l


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


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.), as shown in Figure 8-2. Issue 03 (2012-06-20)


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

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.


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 l


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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

Take proper ESD protection measures, for example, wear an ESD wrist strap or a pair of ES D gloves, to prevent electrostatic damage to the boards, modules, or electronic components.

Step 3 Record all the cable connections on the panel of the module to be replaced. Step 4 Disconnect the monitoring cable and alarm cable from the UEIU. as shown in Figure 8-4. Figure 8-4 Disconnecting the cables


1 2

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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. Figure 8-6 Installing the UPEUc



2.


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

Step 11 Perform the following operations on the LMT: 1.


2.


3.



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.

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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 l


l


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. Step 4 Disconnect the monitoring cable and alarm cable from the UEIU. as shown in Figure 8-8. Figure 8-8 Disconnecting the cables

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1 2




2.


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.

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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

1 2

Step 13 Install a UPEUc in slot 19 and tighten the screws on the board to 0.6 N·m (5.31 lbf·in.), as shown in Figure 8-13. Figure 8-13 Installing a UPEUc



2.


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.

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2.


3.



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 Unit REV:A (UPEUa) boards with two Universal Power and Environment Interface Unit REV:C (UPEUc) boards on a BBU.

Prerequisites l


l


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


WARNING


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Step 2 Record all the cable connections on the panels of the two UPEUa boards. Step 3 Power off the UPEUa installed in slot 18. Step 4 Disconnect cables from the UPEUa installed in slot 18, as shown in Figure 8-15. Figure 8-15 Disconnecting the cables

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


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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 8 Power on the UPEUc installed in slot 18. Step 9 Power off the UPEUa installed in slot 19. 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

Step 12 Install a UPEUc in slot 19 and tighten the screws on the board to 0.6 N·m (5.31 lbf·in.), as shown 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.

Step 14 Power on the UPEUc installed in slot 19. Step 15 Check the status of the new board by observing the status of indicators. For details about the status of the indicators, see UPEU.


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8.2 Adding a WBBP This section describes how to install a WCDMA baseband processing unit (WBBP) when a WBBP is required.

Prerequisites l


l


Context If the power required by the BBU exceeds the power supported by t he UPEU after a WBBP is added, 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 (113°F) exceeds 10 in a year.


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 Assignm ent of the BBU3900.

Figure 8-20 Installing the WBBP

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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. Step 5 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End

8.3 Adding a UTRP This section describes how to install a Universal Transmission Processing unit (UTRP) when a UTRP is required.

Prerequisites l


l



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.), as shown in Figure 8-21. NOTE

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

Figure 8-21 Installing the UTRP

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


On th the BS BSC, ru run th the ADD BTSBRD command to configure the newly added UTRP.

2.

On the the Nod NodeeB, run the the ADD BRD command to configure the newly added UTRP.

3.

On the the eN eNode odeB, run the the ADD BRD command to configure the newly added UTRP.


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9 Replacing SLPU Components

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.

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9.1 Replacing a UELP Each universal E1/T1 lightning protection unit (UELP) provides surge protection for four paths of E1/T1 signals.

Prerequisites l





l


l


l

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

Context Figure 9-1 Position of a UELP UELP UELP

SLPU

S0

INSIDE

OUTSIDE

S1

l

S2

S3

The UELP is hot-swappable.


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. Figure 9-2 Disconnecting the cables

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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

1

2

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.


2.


3.


4.


5.




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

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

Prerequisites l





l


l

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

l

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

Context

Figure 9-4 Position of the UFLP SLPU

S0

S2

UFLP

FE0

FE1

FE0

FE1

S1

S3 INSIDE

OUTSIDE

UFLP

l

The UFLP is hot-swappable.


CAUTION


Step 2 Record all the cable connections on the panel of the module to be replaced. Step 3 Disconnect transmission cables from the UFLP, as shown in Figure 9-5. Figure 9-5 Disconnecting the cables

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

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