DBS3900 Site Maintenance Guide(V100R009C00_Draft C)(PDF)-En

DBS3900

V100R009C00

Site Maintenance Guide

Issue Draft C

Date 2014-03-26

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2014. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respective holders. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees or representationsof any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.Address: Huawei Industrial Base

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

Issue Draft C (2014-03-26) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.

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http://www.huawei.com

mailto:[email protected]

About This Document

OverviewThis document describes the routine hardware maintenance items for the DBS3900. Themaintenance items consist of power supply system maintenance, grounding system maintenance,cabinet maintenance, as well as power-on and power-off operations. It also describes how toreplace components, modules, and boards.

The exteriors of components or cables in this document are for reference only. The actualexteriors may be different.

NOTE

Unless otherwise specified, the BBU refers to both the BBU3900 and BBU3910 in this document.

For details about the LampSite solution, see LampSite Site Maintenance Guide.

Product VersionThe following table lists the product versions related to this document.

Product Name Product Version

DBS3900 V100R009C00. The mapping base stationversions are:GBTS: V100R016C00eGBTS: V100R016C00NodeB: V200R016C00eNodeB: V100R007C00

Intended AudienceThis document is intended for:

l Network planning engineers

l Field engineers

l System engineers

DBS3900Site Maintenance Guide About This Document


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Organization1 Changes in DBS3900 Site Maintenance Guide

This chapter describes the changes in DBS3900 Site Maintenance Guide.

2 Maintenance Items for the DBS3900 Hardware

This section describes the items, period, operation guidelines, and reference standards formaintaining the DBS3900 hardware.

3 Powering On and Powering Off the Base Station

The method to power on and power off a DBS3900 varies according to the cabinets used by theDBS3900. This chapter describes how to power on and power off a DBS3900 in differentscenarios.

4 Risky Hardware Operations

The operations of replacing some components or boards may have affect the normal systemoperation, and therefore is called risky hardware operations. To reduce the impact of riskyoperations on the system, operators need to know the impacts and perform the replacement atproper time.

5 Replacing or Adding Common Components

This chapter describes how to replace or add the common components in various cabinets usedby the DBS3900.

6 Replacing the Components in the APM, TMC, and Battery Cabinet

This chapter describes the procedures and precautions for replacing the components in the APMseries cabinets, TMC series cabinets and IBBS series cabinets.

7 Replacing the Components in an OMB

This chapter describes the procedure and precautions for replacing the components in an OMB.

8 Replacing the Components in an OMB (Ver.C)

This chapter describes the procedure and precautions for replacing the components in an OMB(Ver.C).

9 Replacing the Components in an IMB03

This chapter describes the procedure and precautions for replacing the components in an IMB03.

10 Replacing the Components in a 19-Inch Rack

This chapter describes the procedure and precautions for replacing the components in a 19-inchrack.

11 Replacing the Components in a TP48600A

For details about the procedure and precautions for replacing the components in the TP48600A,see TP48600A-H17B1 User Guide.

12 Replacing Components in the IBC10

This chapter describes the procedure and precautions for replacing components in an IBC10.



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13 Replacing an RRU

For details about how to replace an RRU, see RRU Hardware Maintenance Guide.

ConventionsSymbol Conventions

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

Symbol Description

Indicates an imminently hazardous situation which, if notavoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if notavoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if notavoided, may result in minor or moderate injury.

Indicates a potentially hazardous situation which, if notavoided, could result in equipment damage, data loss,performance deterioration, or unanticipated results.NOTICE is used to address practices not related to personalinjury.

Calls attention to important information, best practices andtips.NOTE is used to address information not related to personalinjury, equipment damage, and environment deterioration.

General Conventions

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

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files, directories, folders, and users are inboldface. For example, log in as user root.

Italic Book titles are in italics.

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

Command Conventions



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


Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

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

{ x | y | ... } Optional items are grouped in braces and separated byvertical bars. One item is selected.

[ x | y | ... ] Optional items are grouped in brackets and separated byvertical bars. One item is selected or no item is selected.

{ x | y | ... }* Optional items are grouped in braces and separated byvertical bars. A minimum of one item or a maximum of allitems can be selected.

[ x | y | ... ]* Optional items are grouped in brackets and separated byvertical bars. Several items or no item can be selected.

GUI Conventions

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


Boldface Buttons, menus, parameters, tabs, window, and dialog titlesare 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 meansthe two keys should be pressed in turn.

Mouse Operations



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

Action Description

Click Select and release the primary mouse button without movingthe pointer.

Double-click Press the primary mouse button twice continuously andquickly without moving the pointer.

Drag Press and hold the primary mouse button and move thepointer to a certain position.



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Contents

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

1 Changes in DBS3900 Site Maintenance Guide..........................................................................1

2 Maintenance Items for the DBS3900 Hardware......................................................................3

3 Powering On and Powering Off the Base Station...................................................................5

4 Risky Hardware Operations........................................................................................................7

5 Replacing or Adding Common Components.........................................................................105.1 Boards Operation Regulations......................................................................................................................................115.2 Replacing the BBU Case..............................................................................................................................................125.3 Replacing BBU Boards................................................................................................................................................175.3.1 Querying the Electronic Label...................................................................................................................................175.3.2 Replacing the UMPT.................................................................................................................................................185.3.3 Replacing the WMPT................................................................................................................................................275.3.4 Replacing the GTMU................................................................................................................................................355.3.5 Replacing the LMPT.................................................................................................................................................435.3.6 Replacing the UBBP..................................................................................................................................................515.3.7 Replacing the WBBP.................................................................................................................................................555.3.8 Replacing the LBBP..................................................................................................................................................595.3.9 Replacing the UPEU..................................................................................................................................................635.3.10 Replacing the UEIU.................................................................................................................................................685.3.11 Replacing the FAN Unit..........................................................................................................................................725.3.12 Replacing the UTRP................................................................................................................................................755.3.13 Replacing the USCU...............................................................................................................................................805.3.14 Replacing the UBRI.................................................................................................................................................835.3.15 Replacing the UCIU................................................................................................................................................885.3.16 Replacing the Optical Module.................................................................................................................................915.4 Adding Boards to the BBU...........................................................................................................................................955.4.1 Adding a UPEU.........................................................................................................................................................955.4.2 Adding a UBBP.......................................................................................................................................................1175.4.3 Adding a WBBP......................................................................................................................................................1205.4.4 Adding an LBBP.....................................................................................................................................................122

DBS3900Site Maintenance Guide Contents


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5.4.5 Adding a UTRP.......................................................................................................................................................1245.5 Replacing Boards in the SLPU...................................................................................................................................1265.5.1 Replacing a UELP...................................................................................................................................................1265.5.2 Replacing the UFLP................................................................................................................................................130

6 Replacing the Components in the APM, TMC, and Battery Cabinet.............................135

7 Replacing the Components in an OMB................................................................................1367.1 Replacing an HEUA...................................................................................................................................................1377.2 Replacing an EPS30-4815AF.....................................................................................................................................1397.3 Replacing a DCDU-03B, DCDU-11B, or DCDU-12B..............................................................................................1447.4 Replacing the AC Surge Protection Box....................................................................................................................148

8 Replacing the Components in an OMB (Ver.C)..................................................................1518.1 Replacing the ELU.....................................................................................................................................................1528.2 Replacing an HEUB...................................................................................................................................................1538.3 Replacing a PDU10D-01............................................................................................................................................1568.4 Replacing a PMU 11A................................................................................................................................................1588.5 Replacing a PSU (R4850G2)......................................................................................................................................1628.6 Replacing an ETP48100-A1 Subrack.........................................................................................................................1668.7 Replacing the Fuse......................................................................................................................................................1698.8 Replacing the AC Surge Protection Box....................................................................................................................1728.9 Replacing a GPS Surge Protector...............................................................................................................................174

9 Replacing the Components in an IMB03..............................................................................1779.1 Replacing an EPS30-4815AF.....................................................................................................................................1789.2 Replacing an EPS4890 Subrack.................................................................................................................................1839.3 Replacing an EPS24S48100DC Subrack...................................................................................................................1869.4 Replacing an ETP48100-B1 Subrack.........................................................................................................................1889.5 Replacing a PMU 01B................................................................................................................................................1919.6 Replacing a PSU (EPW25-24S48D)..........................................................................................................................1969.7 Replacing a PSU (EPW30-48A).................................................................................................................................1999.8 Replacing a DCDU-03B, DCDU-11B, or DCDU-12B..............................................................................................202

10 Replacing the Components in a 19-Inch Rack...................................................................20710.1 Replacing a DCDU-03B, DCDU-11B, or DCDU-12B............................................................................................208

11 Replacing the Components in a TP48600A.........................................................................213

12 Replacing Components in the IBC10...................................................................................21412.1 Replacing a DCDU-12C...........................................................................................................................................21512.2 Replacing the ELU...................................................................................................................................................21812.3 Replacing a Temperature Sensor at the Air Intake Vent of the BBU.......................................................................22212.4 Replacing an FAU03D-02........................................................................................................................................22612.5 Replacing a Fuse.......................................................................................................................................................229



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13 Replacing an RRU...................................................................................................................233



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1 Changes in DBS3900 Site Maintenance Guide

This chapter describes the changes in DBS3900 Site Maintenance Guide.

Draft C (2014-03-26)

This is a draft.

Compared with the issues Draft B (2014-02-28), this issue includes the following changes:

l 12 Replacing Components in the IBC10 and its child topic

Compared with the issues Draft B (2014-02-28), no topic is changed or deleted from this issue.

Draft B (2014-02-28)

This is a draft.

Compared with the issues Draft A (2014-01-20), this issue does not include any new informationand does not exclude any information.

Compared with the issues Draft A (2014-01-20), this issue includes the following changes.

Topic Change Description

About This Document Added the description of the LampSitesolution.

5.3.16 Replacing the Optical Module Added the step of performing ratenegotiation.

Draft A (2014-01-20)

This is a draft.

Compared with the issues for the multimode base station version V100R008C00 and the single-mode base station versions WCDMA-NodeB V200R015C00, GSM-BTS V100R015C00, andeNodeB V100R006C00, this issue includes the following changes:

l 5.3.6 Replacing the UBBP

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l 5.4.2 Adding a UBBP

Compared with the issues for the multimode base station V100R008C00, WCDMA-NodeBV200R015C00, GSM-BTS V100R015C00, and eNodeB V100R006C00, this issue includes thefollowing change: Added the descriptions of the BBU3910.

Compared with the issues for the multimode base station V100R008C00, WCDMA-NodeBV200R015C00, GSM-BTS V100R015C00, and eNodeB V100R006C00, this issue does notexclude any information.

DBS3900Site Maintenance Guide 1 Changes in DBS3900 Site Maintenance Guide


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2 Maintenance Items for the DBS3900Hardware

This section describes the items, period, operation guidelines, and reference standards formaintaining the DBS3900 hardware.

For the maintenance items for the APM and TMC series cabinets used in the DBS3900, seeRoutine Maintenance Items.

The following table lists the maintenance items for the BBU.

Table 2-1 Maintenance Items for the BBU

Item MaintenancePeriod

Operation Guideline Reference Standard

Fans Weekly,monthly, orquarterly

Check the fans. No fan-related alarm isgenerated.

Ventilation ofthe BBU

Quarterly Check the air intakevents and air exhaustvents of the BBU and ofthe subrack and cabinethousing the BBU.

The air intake vents and airexhaust vents are clean. Ifmuch dirt is on the air intakevents and air exhaust vents,maintenance personnel mustclean the vents.

Equipmentsurface

Monthly orquarterly

Check whether theequipment surface isintact and whether thelabels on the equipmentare legible.

The equipment surface isintact and the labels on theequipment are legible.

Equipmentcleanliness

Monthly orquarterly

Check whether all theequipment is clean.

The surface and interior ofthe equipment are clean.

Indicators Monthly orquarterly

Check whether theindicators are in thenormal state.

No indicator indicatesalarms.

DBS3900Site Maintenance Guide 2 Maintenance Items for the DBS3900 Hardware


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Item MaintenancePeriod

Operation Guideline Reference Standard

Ambienttemperature inthe cabinet

Monthly orquarterly

Check whether thetemperature in thecabinet is within theacceptable temperaturerange.

The ambient temperature ofthe BBU ranges from -20°Cto +55°C (-4°F to 131°F).

NOTE

The maintenance period depends on onsite conditions.

DBS3900Site Maintenance Guide 2 Maintenance Items for the DBS3900 Hardware


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3 Powering On and Powering Off the BaseStation

The method to power on and power off a DBS3900 varies according to the cabinets used by theDBS3900. This chapter describes how to power on and power off a DBS3900 in differentscenarios.

NOTICEl Power on a cabinet or BBU within 7 days after unpacking it. If you power off a cabinet or

BBU for maintenance, restore power to the cabinet or BBU within 48 hours.

l Power on an RRU within 24 hours after unpacking it. If you power off an RRU formaintenance, restore power to the RRU within 24 hours.

Powering On a Base Station

The following table describes how to power on a DBS3900 in different scenarios.

Application Scenario Reference

Outdoor AC scenario where the BBU isinstalled in an APM30H (Ver.B), (Ver.C), or(Ver.D)


Outdoor AC scenario where the BBU isinstalled in an APM30H (Ver.B), (Ver.C), or(Ver.D)


Outdoor DC scenario where the BBU isinstalled in a TMC11H (Ver.B), (Ver.C), or(Ver.D)


Outdoor DC scenario where the BBU isinstalled in a +24 V DC APM30H (Ver.B)


DBS3900Site Maintenance Guide 3 Powering On and Powering Off the Base Station


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Application Scenario Reference

Outdoor scenario where the BBU is installedin an OMB or OMB (Ver.C)


Indoor DC scenario where the BBU isinstalled on the wall or in a 19-inch rack


Indoor scenario where the BBU is installed inan IMB03


Outdoor AC scenario where the BBU isinstalled in a TP48600A


Powering Off the Base Station1. Determine whether to perform a normal power-off or emergency power-off as required.

If... Then...

The base station needs to be powered offin scenarios such as a planned equipmentswap or foreseeable regional blackout

Proceed to 2 to perform a normal power-off.

The BBU needs to be powered off inemergent scenarios such as a fire, smoke,or water damage.

Proceed to 3 to perform an emergencypower off.

2. Turn off the power switch on the BBU first, set all circuit breakers in all power devices to

OFF, and then turn off the power switch on the external power equipment connecting tothe cabinet in a DBS3900.

3. Turn off the power switch on the external power equipment connecting to the cabinet in aDBS3900 and then the power switches on the BBU and power devices if time permits.

DBS3900Site Maintenance Guide 3 Powering On and Powering Off the Base Station


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4 Risky Hardware Operations

The operations of replacing some components or boards may have affect the normal systemoperation, and therefore is called risky hardware operations. To reduce the impact of riskyoperations on the system, operators need to know the impacts and perform the replacement atproper time.

The following table describes the impacts of replacing different components or boards.

Table 4-1 Risky hardware operations

HardwareOperation

Impact

5.3.4Replacing theGTMU

l If a multimode base station supports co-transmission and the shared ports forco-transmission are provided by the GSM mode, replacing the GTMU willinterrupt the services of the peer mode. Typical scenario: The GU dual-modebase station supports co-transmission over TDM through the E1/T1 ports onthe GTMU. The UMTS data is transmitted through the backplane in the mannerof TDM over Packet (ToP).

l For a multimode base station in dual-star topology, if the GTMU is resetabnormally or removed, the data and voice services of the UMTS or LTE modemay be interrupted.

5.3.3Replacing theWMPT

l If no standby WMPT is configured, replacing a WMPT will interrupt allservices carried by the NodeB. Therefore, a WMPT must be replaced within10 minutes.

l If a multimode base station supports co-transmission and the shared ports forco-transmission are on the WMPT, replacing the WMPT will interrupt theservices of the peer mode. Typical scenario: The GU dual-mode base stationsupports co-transmission over IP through the Ethernet link on the WMPT. TheGSM data is transmitted through the FE ports interconnecting the WMPT andGTMU panels.

l For a multimode base station in dual-star topology, replacing the WMPT maydecrease the rate of GSM or LTE data services. However, voice services willnot be affected

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HardwareOperation

Impact

5.3.5Replacing theLMPT

l If no standby LMPT is configured in an eNodeB, replacing an LMPT willinterrupt all services carried by the eNodeB. Therefore, an LMPT must bereplaced within 10 minutes.

l For a multimode base station in dual-star topology, replacing the LMPT maydecrease the rate of GSM or UMTS data services. However, voice services willnot be affected

5.3.2Replacing theUMPT

l If no standby UMPT is configured in a single-mode base station or co-MPTmultimode base station, replacing a UMPT will interrupt all services carriedby the base station. Therefore, a UMPT must be replaced within 10 minutes.

l If a separate-MPT multimode base station supports co-transmission and theshared ports for co-transmission are on the UMPT, replacing the UMPT willinterrupt the services of the peer mode. Typical scenario: The GU dual-modebase station supports co-transmission over IP through the Ethernet link on theUMPT. The GSM data is transmitted through the interconnected FE ports.

l For a separate-MPT multimode base station in dual-star topology, replacingthe UMPT that works in UMTS mode may decrease the rate of GSM or LTEdata services. However, the voice services will not be affected. Replacing theUMPT that works in LTE mode may decrease the rate of GSM or UMTS dataservices. However, the voice services will not be affected. Replacing the UMPTthat works in GSM mode may interrupt the data or voice services of UMTS orLTE mode.

5.3.7Replacing theWBBP

l When the WBBPf serving as the converging party in a base station using theCPRI MUX feature is reset abnormally or removed and inserted again, dataand voice services of the converged party will be interrupted.

5.3.8Replacing theLBBP

l When the LBBPd serving as the converged party in a base station using theCPRI MUX feature is reset abnormally or removed and inserted again, dataservice rate of the converging party will decrease. However, voice services ofthe converging party will not be affected. When the LBBPd serving as theconverging party in a base station using the CPRI MUX feature is resetabnormally or removed and inserted again, data and voice services of theconverged party will be interrupted.

5.3.11Replacing theFANUnit

l Replacing the FAN unit may cause overtemperature alarms due to interruptionof heat dissipation in the BBU. Therefore, the FAN unit must be replaced within3 minutes.

5.3.15Replacing theUCIU

l When the UCIU is faulty or is replaced, services carried by RF modules in GUor GL mode are affected. In this situation, services of one mode can be restoredautomatically. Services of the other mode can be restored only after the faultis rectified or the UCIU is reset.



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HardwareOperation

Impact

5.3.9Replacing theUPEU

l If a base station is configured with one UPEU, replacing the UPEU will cut offthe power supply to the BBU and interrupt all the services carried by the basestation.

l If a base station is configured with two UPEUs, replacing one UPEU will causethe failure to monitor the external equipment.

5.3.10Replacing theUEIU

l Replacing the UEIU may cause the failure to monitor the external equipment.Therefore, the UEIU must be replaced within 5 minutes.

5.3.12Replacing theUTRP

l If a multimode base station implements co-transmission through shared portson the UTRP, replacing the UTRP will interrupt the services of the peer mode.

5.3.16Replacing theOpticalModule

l If you remove an optical module from a CPRI port and then insert it into thesame CPRI port, services can be recovered later automatically.

l If you remove an optical module from a CPRI port and then insert it into anotherCPRI port, services could be interrupted.

Replacing anRFU

Replacing an RFU interrupts the services carried on the RFU.

Replacing anRRU

Replacing an RRU interrupts the services carried on the RRU. For detailedprocedures, see Replacing an RRU in RRU Hardware Maintenance Guide.



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5 Replacing or Adding Common Components

About This Chapter

This chapter describes how to replace or add the common components in various cabinets usedby the DBS3900.

5.1 Boards Operation RegulationsThis section describes the boards operation regulations when installing or removing BBU boards.

5.2 Replacing the BBU CaseThis section describes the procedure and precautions for replacing a BBU3900 or BBU3910case.

5.3 Replacing BBU BoardsThis chapter describes how to replace the boards in a BBU.

5.4 Adding Boards to the BBUThis section describes how to add boards to the BBU during the maintenance.

5.5 Replacing Boards in the SLPUWhen maintaining the SLPU, the UELP or UFLP in the SLPU needs to be replaced.

DBS3900Site Maintenance Guide 5 Replacing or Adding Common Components


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5.1 Boards Operation RegulationsThis section describes the boards operation regulations when installing or removing BBU boards.

l When moving a board, you must hold the board with both hands, as shown in the followingfigure.

Figure 5-1 Incorrect and correct operations when moving a board

l When installing a board, you must hold the ejector lever side of the board with one handand hold another side of the board with the other hand to ensure that the board is movingin the correct direction. Do not hold the board with only one hand and never apply lateralforces to the board. The following figure shows incorrect and correct operations wheninstalling a board.

Figure 5-2 Incorrect and correct operations when installing a board (1)

l When installing a board, ensure that your hands are level so that the board and the guiderails are on one level. Do not apply lateral forces to the board. Otherwise, the board willbe distorted. The following figure shows incorrect and correct operations when installinga board.



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Figure 5-3 Incorrect and correct operations when installing a board (2)

5.2 Replacing the BBU CaseThis section describes the procedure and precautions for replacing a BBU3900 or BBU3910case.

Prerequisitesl The type of the BBU case to be replaced and its quantity are confirmed, and a new BBU

case is ready.l An ESD wrist strap or a pair of ESD gloves and an M3 Phillips screwdriver are available.l If a static IP-based GSM base station is used, a PC equipped with an Ethernet cable and

the short message terminal (SMT) application is available. For details about the hardwarerequirements of the PC, see GSM SMT User Guide.

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

ProcessThe following figure shows the process for replacing the BBU case.



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Figure 5-4 Process for replacing the BBU case

Procedurel Perform the following operations remotely.

1. Query alarms reported by the base station according to the instructions in BrowsingCurrent Alarms.



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2. Block all cells under the base station.

NOTE

In a multimode base station, the operation of blocking the related cells must be performed onall modes involved.

– Optional: For a GBTS, run the LST GCELL command on the BSC LMT to querythe administrative state of the cells under the base station. Then, run the SETGCELLADMSTAT command with the ADMSTAT parameter set to LOCK toblock all cells under the base station.

– Optional: For an eGBTS, run the BLK GLOCELL command on the eGBTSLMT to block all cells under the eGBTS.

– Optional: For a NodeB, run the BLK ULOCELL command on the NodeB LMTto block all cells under the NodeB.

– Optional: For an eNodeB, run the BLK CELL command on the eNodeB LMTto block all cells under the eNodeB.

3. Modify the corresponding ESN on the U2000. For detailed operations, see PerformingESN-based Base Station Binding (Only When the Base Station Is to Be Bound withthe ESN).

4. Instruct the site engineer to replace the board.

5. Receive the information that the site engineer has replaced the board.

6. Unblock all cells under the base station.

– Optional: For a GBTS, run the SET GCELLADMSTAT command with theADMSTAT parameter set to UNLOCK on the BSC LMT to unblock all cellsunder the base station.

– Optional: For an eGBTS, run the UBL GLOCELL command on the eGBTS LMTto unblock all cells under the eGBTS.

– Optional: For a NodeB, run the UBL ULOCELL command on the NodeB LMTto unblock all cells under the NodeB.

– Optional: For an eNodeB, run the UBL CELL command on the eNodeB LMT tounblock all cells under the eNodeB.

7. Perform the operation of Browsing Current Alarms to compare the alarms queriedwith the alarms queried before the replacement. Then handle the added alarmsaccording to the instructions in 3900 Series Base Station Alarm Reference.

8. Inform the site engineer that the remote operations are completed, and ask the siteengineer to verify the services.

l Perform the following operations locally.

1. Receive the instruction from the remote engineer and prepare to replace the board.

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

NOTICETake proper ESD protection measures, for example, put on an ESD wrist strap or apair of ESD gloves, to prevent electrostatic damage to the boards, modules, or otherelectronic components.



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3. Power off the BBU, as shown in the following table.

Table 5-1 Powering off the BBU

Base Station Method of Powering off the BBU

BTS3900 (Ver.B), BTS3900 (Ver.C), orBTS3900 (Ver.D)

Powering Off a Base Station

BTS3900L (Ver.B), BTS3900L(Ver.C), or BTS3900L (Ver.D)


BTS3900A (Ver.B), BTS3900A(Ver.C), or BTS3900A (Ver.D)


DBS3900 3 Powering On and Powering Off theBase Station

BTS3900AL (Ver.A) Powering Off a Base Station

BTS3900C (Ver.C) Powering Off a Base Station

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

5. Disconnect the power cables, transmission cables, CPRI cables, and alarm cables fromthe panels of the boards in the BBU case.

CAUTIONWhen removing a BBU power cable in a running base station, you need to removethe connector on the power equipment side before removing the connector on the BBUside. The operations in the reverse sequence may cause component damage or personalinjury.

6. Loosen the four M6 screws on the BBU case, and remove the BBU case, as shown inthe following figure.

Figure 5-5 Removing the BBU case

7. Remove all the boards in the faulty BBU case, install them in the corresponding slotsof the new BBU case, and install filler panels in the vacant slots.



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CAUTIONRemove and install a BBU board strictly according to instructions in 5.1 BoardsOperation Regulations.

8. Remove the cable claws from both sides of the faulty BBU case, install them on thecorresponding positions of the new BBU case, and tighten the screws to 1.2 N·m (10.62lbf·in.).

9. Install the new BBU case, use a Phillips screwdriver to tighten the M6 screws on theBBU case to 2 N·m (17.70 lbf·in.), and reconnect the cables based on the cableconnection records.

CAUTIONEnsure that the BBU power cable for a BBU added to a running base station must beconnected to the BBU first and then to the power equipment. The operations in thereverse sequence may cause component damage or personal injury.

10. Power on the BBU, as shown in the following table.

Table 5-2 Powering on the BBU

Base Station Method of Powering on the BBU

BTS3900 (Ver.B), BTS3900 (Ver.C), orBTS3900 (Ver.D)


BTS3900L (Ver.B), BTS3900L(Ver.C), or BTS3900L (Ver.D)


BTS3900A (Ver.B), BTS3900A(Ver.C), or BTS3900A (Ver.D)


DBS3900 3 Powering On and Powering Off theBase Station

BTS3900AL (Ver.A) Powering On a Base Station

BTS3900C (Ver.C) Powering On a Base Station

BTS3012AE (Ver.D_Z) Powering On and Powering Off theBTS3012AE

11. Check the status of the new BBU case by observing the status of indicators on theboards in the BBU. For details about the status of the indicators, see the relatedhardware description.

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

13. Inform the remote engineer that the board has been replaced.



16

14. After receiving the notification from remote engineers, perform the operation ofPerforming Service Tests.

----End

Follow-up Procedurel 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 module.l Complete the fault form with detailed information about the replaced component.l Contact the local Huawei office to handle the faulty component.

5.3 Replacing BBU BoardsThis chapter describes how to replace the boards in a BBU.

5.3.1 Querying the Electronic LabelBefore replacing a board, you need to query the electronic label to confirm the type of the board.

Procedure

Step 1 Run the MML commands to query the electronic label of the board.

NOTE

In a multimode base station, the MML commands of each mode need to be run.

l For the GBTS, run the DSP BTSELABEL command to query the electronic label of theboard.

l For the eGBTS, NodeB, or eNodeB, run the DSP ELABEL command to query theelectronic label of the board.

Step 2 The type of the board to be replaced can be determined according to the BoardType andDescription in the command output. Keep the new board ready according to the informationindicated by the bar code label on the panel or handle of the new board. The following figureshows the bar code label.

Figure 5-6 Bar code label

----End



17

5.3.2 Replacing the UMPTThis section describes the procedure and precautions for replacing a faulty UMPT in aBBU3900 or BBU3910.

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

– If the board can be queried online, run an MML command online to query it accordingto the instructions in Querying the Electronic Label.

– If the board is faulty and cannot be queried online, query the board information offlineon the U2000 according to the instructions in Querying Inventory Data.

l An ESD wrist strap or a pair of ESD gloves and an M3 Phillips screwdriver are available.l Associated personnel have gained permission to access the site and have obtained the

required keys.l Optional:

When restoring software and configuration data using a USB flash drive, ensure that theUSB port on the main control board has been enabled.The USB port on the main control board is enabled by default before delivery. Localengineers can run MML commands (DSP LOCALUSBPORT for the NodeB/eNodeB/BTS3900) to query the status of the USB port on the main control board. If the value ofEnable Flag is Enable, the USB port is enabled. If the value of Enable Flag isDISABLE, the USB port is disabled. To enable the USB port, run MML commands (SETLOCALUSBPORT for the NodeB/eNodeB/BTS3900) to set Enable Flag to ENABLE.

Contextl Replacing the UMPT has the following impacts on the base station:

– If no standby UMPT is configured in a single-mode base station or co-MPT multimodebase station, replacing a UMPT will interrupt all services carried by the base station.Therefore, a UMPT must be replaced within 10 minutes.

– If a separate-MPT multimode base station supports co-transmission and the shared portsfor co-transmission are on the UMPT, replacing the UMPT will interrupt the servicesof 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 istransmitted through the interconnected FE ports.

– For a separate-MPT multimode base station in dual-star topology, replacing the UMPTthat works in UMTS mode may decrease the rate of GSM or LTE data services.However, the voice services will not be affected. Replacing the UMPT that works inLTE mode may decrease the rate of GSM or UMTS data services. However, the voiceservices will not be affected. Replacing the UMPT that works in GSM mode mayinterrupt the data or voice services of UMTS or LTE mode.

l The UMPT is hot-swappable.l The following figure shows the position of the UMPT in the BBU.



18

Figure 5-7 Position of the UMPT

ProcessThe following figure shows the process for replacing the UMPT.

NOTICEDo not use a USB flash drive but the LMT or U2000 to restore the software and data when anycertificate or authentication related data is being used, because the CME cannot export such data.Such data includes the data related to a PPP certificate, multi-link PPP certificate, or pre-sharedkey used for authentication.



19

Figure 5-8 Process for replacing the UMPT





20

2. Ask field engineers to prepare dialing test tools. For details, see Preparing DialingTest Tools.


NOTE


NOTE

If this command cannot be executed or services of this cell are interrupted, go to the next step.

If... Then...

The base station is a GBTS Run the LST GCELL command on theBSC to query the administrative state ofthe cells under the base station. Then,run the SET GCELLADMSTATcommand with the ADMSTATparameter set to LOCK to block all cellsunder the base station.

The base station is an eGBTS Run the BLK GLOCELL command onthe eGBTS to block all cells under theeGBTS.

The base station is a NodeB Run the BLK ULOCELL command onthe NodeB to block all cells under theNodeB.

The base station is an eNodeB Run the BLK CELL command on theeNodeB to block all cells under theeNodeB.

4. Back up data configuration files and the license.

a. Manually back up the NE data by performing operations in Manually BackingUp NE Data and upload the configuration file to the OSS server according to theinstructions in Uploading NE Data.

b. Optional: For an eNodeB, run the ULD LICENSE command to upload thelicense file to the server.

5. Prepare for restoring software and configuration data.

NOTICEIf the BBU is configured with a UTRPc, the software and configurations can only bereset locally.



21

Prerequisite Procedure If... Then...

l The transportnetworksupports theautomaticestablishmentof OMchannels.

l The time forrestoringsoftware andconfigurations remotely islonger thanthat forrestoringsoftware andconfigurations locally.

Prepare forrestoringsoftware andconfigurationdata remotely.

You need torestore softwareandconfigurationsby means of aself-deploymenttask on theU2000

1. Uploading aSoftware Package.

2. Uploading aCommissioningLicense (When LTEServices are to beEnabled).

3. Preparing a DataConfiguration Fileand a DeploymentList.

4. Creating an NECommissioningTask.

5. Starting an NECommissioningTask.

You need torestore NEsoftware andconfigurationsmanually

Download the softwarepackage of the targetversion from http://support.huawei.com,and upload the softwarepackage from the OSSclient to the OSS serveror download thesoftware package to theNE. For detailedoperations,seeTransferring NEFiles.

l The devicerequired bylocalcommissioning is available:a PC(commissioning using theLMT) or USBflash drive(commissioning using aUSB flashdrive).

Prepare forrestoringsoftware andconfigurationdata locally.

You need toconductcommissioningusing the LMT

1. Preparing a SoftwarePackage, DataConfiguration File,and DeploymentList.




22

http://support.huawei.com



l Ensure thatthe USB porton the maincontrol boardhas beenenabled.

You need toconductcommissioningusing a USBflash drive

1. Preparing a SoftwarePackage, DataConfiguration Files,and DeploymentLists.

2. Back upconfiguration databy using the USBflash drive. Fordetails about theUSB flash drive usedfor a NodeB,eNodeB, orBTS3900, seePreparing a USBFlash Drive (forNodeB, eNodeB,and BTS3900). Fordetails about theUSB flash drive usedfor a GBTS. seePreparing a USBFlash Drive (forGBTS).


6. Ask field engineers to replace the board locally.7. Field engineers have replaced the board.8. If preparations for locally restoring of software and configuration data have been

finished before the replacement, perform the following operations:

If... Then...

You need to restore software andconfigurations by means of aself-deployment task on theU2000

Start a commissioning task and monitor the taskstatus. For details, see Monitoring theCommissioning Task. If the NE commissioningtask enters the auto-configuration phase, thebase station has finished restoring the softwareand configurations.



23

If... Then...

You need to restore NE softwareand configurations manually

1. To upgrade the software, see Upgrading NESoftware and Installing NE Patches in Task-based Mode.

2. To upgrade configuration file, see RestoringNE Data.

3. After the base station restarts, run the LSTVER command to check whether all modeshave been loaded with the software of thetarget version. If not, run the DLDSOFTWARE command to redownload thesoftware and then run the ACTSOFTWARE command to activate thesoftware.

9. Optional: For an eNodeB, load a commercial license according to the instructions inInstalling the Stand-Alone License.


NOTE

In a multimode base station, the cells of each mode must be unblocked.

If... Then...

The base station is a GBTS Run the SET GCELLADMSTATcommand on the BSC with theADMSTAT parameter set toUNLOCK to unblock all cells under theGBTS.

The base station is an eGBTS Run the UBL GLOCELL command onthe eGBTS to unblock all cells under theeGBTS.

The base station is a NodeB Run the UBL ULOCELL command onthe NodeB to unblock all cells under theNodeB.

The base station is an eNodeB Run the UBL CELL command on theeNodeB to unblock all cells under theeNodeB.


12. Synchronize the inventory information manually according to the instructions inSynchronizing Inventory Data.




24





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

4. Remove the transmission cable from the UMPT. If a surge protection board isconfigured, the surge protection transfer cable also needs to be removed, as shown inthe following figure.

Figure 5-9 Removing the cables

5. Loosen the two M3 screws on the panel, raise the ejector lever, and pull out the UMPT,as shown in the following figure.

CAUTIONl When removing a board, hold the board with both hands and remove it from the

subrack slowly.

l When transporting a board, hold the board with both hands.

Figure 5-10 Removing the UMPT



25

6. Set the DIP switches on the new board to the same as the settings of the DIP switcheson the replaced board. For details, see UMPT.

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


8. Check the status of the new board by observing the status of indicators. For detailsabout the status of the indicators, see UMPT.

9. If preparations for remotely restoring of software and configuration data have beenfinished before the replacement, ask field engineers to restore software andconfiguration data. If preparations for locally restoring of software and configurationdata have been finished before the replacement, perform the following operations:

a. Restore data using the LMT or a USB flash drive.

If... Then...

You need to restore datausing the LMT

1. Run the DLD CFGFILE command todownload configuration files from theFTP server to the eNodeB.

2. To download and activate theconfiguration file, software, and license(optional), see Loading Software, DataConfiguration File, and CommissioningLicense on the LMT

You need to restore datausing a USB flash drive

Loading a Software Package or DataConfiguration Files from a USB Flash Drive

b. After the base station restarts, run the LST VER command to check whether allmodes have been loaded with the software of the target version. If not, run theDLD SOFTWARE command to redownload the software and then run the ACTSOFTWARE command to activate the software.



----End


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

l Complete the fault form with detailed information about the replaced component.



26

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

5.3.3 Replacing the WMPTThis section describes the procedure and precautions for replacing a faulty WMPT in aBBU3900.

PrerequisitesNOTE

This section describes the procedure for replacing a WMPT with a new one. The UMPT cannot be usedas a spare part for the WMPT. The procedure for replacing a WMPT with a UMPT is the same as that forreplacing a WMPT with a new one. For details about the replacement procedure, see the procedure insections "Modifying the VLAN Configuration Mode" of RAN Reconfiguration Guide.

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




required keys.l When restoring software and configuration data using a USB flash drive, ensure that the

USB port on the main control board has been enabled.The USB port on the main control board is enabled by default before delivery. Localengineers can run MML commands (DSP LOCALUSBPORT for the NodeB/eNodeB/BTS3900) to query the status of the USB port on the main control board. If the value ofEnable Flag is Enable, the USB port is enabled. If the value of Enable Flag isDISABLE, the USB port is disabled. To enable the USB port, run MML commands (SETLOCALUSBPORT for the NodeB/eNodeB/BTS3900) to set Enable Flag to ENABLE.

Contextl Replacing the WMPT has the following impacts on the base station:

– If no standby WMPT is configured, replacing a WMPT will interrupt all services carriedby the NodeB. Therefore, a WMPT must be replaced within 10 minutes.

– If a multimode base station supports co-transmission and the shared ports for co-transmission are on the WMPT, replacing the WMPT will interrupt the services of thepeer mode. Typical scenario: The GU dual-mode base station supports co-transmissionover IP through the Ethernet link on the WMPT. The GSM data is transmitted throughthe FE ports interconnecting the WMPT and GTMU panels.

– For a multimode base station in dual-star topology, replacing the WMPT may decreasethe rate of GSM or LTE data services. However, voice services will not be affected

l The WMPT is hot-swappable.l The following figure shows the position of the WMPT in the BBU.



27

Figure 5-11 Position of the WMPT in the BBU

ProcessThe following figure shows the process for replacing the WMPT.




28

Figure 5-12 Process for replacing the WMPT





29


3. On the NodeB, run the BLK ULOCELL command to block all cells under the NodeB.

NOTE




5. Optional: If a UMPT is used to replace a WMPT and the NodeB uses the VLANgroup, the VLAN mode must be changed from the VLAN group to the single VLAN.For details about how to change the VLAN group to the single VLAN, see theprocedure in sections "Modifying the VLAN Configuration Mode" of RANReconfiguration Guide.















30












31










If... Then...





32

If... Then...





10. On the NodeB, run the UBL ULOCELL command to unblock all cells under theNodeB.









4. Remove the transmission cable from the WMPT. If a surge protection board isconfigured, the surge protection transfer cable also needs to be removed, as shown inthe following figure.




33

5. Loosen the two M3 screws on the panel, raise the ejector lever, and pull out the WMPT,as shown in the following figure.


subrack slowly.


Figure 5-14 Removing the WMPT

6. Set the DIP switches on the new board to the same as the settings of the DIP switcheson the replaced board. For details, see WMPT.



8. Check the status of the new board by observing the status of indicators. For detailsabout the status of the indicators, see WMPT.





34

If... Then...






b. After the base station restarts, run the LST VER command to check whether all

modes have been loaded with the software of the target version. If not, run theDLD SOFTWARE command to redownload the software and then run the ACTSOFTWARE command to activate the software.

10. Take off the ESD wrist strap or ESD gloves, and pack up all tools.11. After receiving the notification from remote engineers, perform the operation of

Performing Service Tests.

----End



5.3.4 Replacing the GTMUThis section describes the procedure and precautions for replacing a faulty GTMU in aBBU3900.





required keys.l Ensure that the USB port on the main control board has been enabled.

The USB port on the main control board is enabled by default before delivery. Localengineers can run MML commands (DSP LOCALUSBPORT for the NodeB/eNodeB/



35

BTS3900) to query the status of the USB port on the main control board. If the value ofEnable Flag is Enable, the USB port is enabled. If the value of Enable Flag isDISABLE, the USB port is disabled. To enable the USB port, run MML commands (SETLOCALUSBPORT for the NodeB/eNodeB/BTS3900) to set Enable Flag to ENABLE.

l If the base station is a GBTS, ensure the following operations have been performed.

If... Then...

The base station is deployed by usingDHCP

1. Ensure that the site ESN configured onthe BSC is consistent with that on theBBU.

2. Ensure that the DHCP relay functionhas been enabled for the next layer-3routing device on the transmission pathof the base station.

Co-transmission is achieved through thebackplane in the multimode base stationand the GTMU is not connected to thetransmission cable

Ensure that the GTMU version has beenupgraded to BTS3000 V100R014C00 orlater.

Contextl In a GBTS, replacing the GTMU has the following impacts on the base station:

– If a multimode base station supports co-transmission and the shared ports for co-transmission are provided by the GSM mode, replacing the GTMU will interrupt theservices of the peer mode. Typical scenario: The GU dual-mode base station supportsco-transmission over TDM through the E1/T1 ports on the GTMU. The UMTS data istransmitted through the backplane in the manner of TDM over Packet (ToP).

– For a multimode base station in dual-star topology, if the GTMU is reset abnormally orremoved, the data and voice services of the UMTS or LTE mode may be interrupted.

l The GTMU is hot-swappable.l The following figure shows the position of the GTMU in the BBU.

Figure 5-15 Position of the GTMU

ProcessIf the GTMU serves as the main control and transmission board, the process for replacing theGTMU is shown in the following figure.



36




37

Figure 5-16 Process for replacing the GTMU

If the GTMUb serves as an evolved baseband radio interface processing board, the process forreplacing the GTMUb is shown in the following figure.



38

Figure 5-17 Process for replacing the GTMUb

NOTE

The following procedure uses the example of replacing the GTMU.





39

2. On the BSC, run the LST BTSAUTODLDACTINFO command to check whetherthe function of automatically loading and activating base station software has beenenabled.

If... Then...

The function of automatically loadingand activating base station software hasbeen enabled

1. Download the software package ofthe target version from http://support.huawei.com.

2. To download the software packagefrom the OSS server to thecorresponding BSC or RNC, seeTransferring NE Files.

The function of automatically loadingand activating base station software hasnot been enabled

l To back up data using the SMT,download the software package ofthe target version from http://support.huawei.com and save it tothe PC on which SMT is installed.

l To back up data with a USB flashdrive, see Preparing a USB FlashDrive (for GBTS).

3. Optional: If static IP addresses are configured, run the LST BTSIPRT, LST

BTSDEVIP, and LST BTSIP commands on the BSC to query the IP address androute information.

4. For a GBTS, run the LST GCELL command on the BSC LMT to query theadministrative state of the cells under the base station. Then, run the SETGCELLADMSTAT command with the ADMSTAT parameter set to LOCK toblock all cells under the base station.

5. Instruct the site engineer to replace the board.6. Run the LST BTSAUTODLDACTINFO command on the BSC to check whether

the function of automatically loading and activating base station software has beenenabled.

If... Then...

The function of automatically loadingand activating base station software hasbeen enabled

Unblock all cells under the base station.

The function of automatically loadingand activating base station software hasnot been enabled

Ask the local engineers to restoreconfiguration data.

7. For a GBTS, run the SET GCELLADMSTAT command with the ADMSTAT

parameter set to UNLOCK on the BSC LMT to unblock all cells under the basestation.



40








l Perform the following operations locally.1. Receive the instruction from the remote engineer and prepare to replace the board.2. Put on an ESD wrist strap or a pair of ESD gloves.


3. Record all the cable connections on the panel of the module to be replaced.4. Remove 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 removed, asshown in the following figure.


5. Loosen the two M3 screws on the panel, raise the ejector lever, and pull out the GTMU,

as shown in the following figure.


subrack slowly.l When transporting a board, hold the board with both hands.



41

Figure 5-19 Removing the GTMU

6. Set the DIP switches on the new board to the same as the settings of the DIP switcheson the replaced board. For details about the DIP switch, see GTMU.



8. Check the status of the new board by observing the status of indicators. For detailsabout the status of the indicators, see GTMU.

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

NOTE

Before starting the commissioning on the SMT, the operator in the remote equipment roommust run the SET BTSLOCALETHPORT command on the BSC to enable thecommissioning port. Otherwise, the SMT cannot connect to the base station.

a. Connect the computer on which the SMT application is installed to the ETH porton the GTMU, as shown in the following figure.

Figure 5-20 Connecting the GTMU



42

b. Log in to the SMT, and configure the static IP data according to the instructionsin section "Setting the Static IP Address of the IP over FE BTS" in SMT UserGuide.

c. Restart the GTMU on the SMT.

d. Disconnect the computer on which the SMT application is installed from theGTMU.

10. If the function of automatically loading and activating base station software has notbeen enabled, restore data.

– To restore data using the SMT, see Forcibly Loading Software and ActivatingSoftware.

– To restore the data backed up in a USB flash drive, see Preparing a USB FlashDrive (for NodeB, eNodeB, and BTS3900).




----End





5.3.5 Replacing the LMPTThis section describes the procedure and precautions for replacing a faulty LMPT in a BBU3900.

PrerequisitesNOTE

This section describes the procedure for replacing an LMPT with a new one. If the LMPT is replaced witha UMPT, see the procedure in sections "Replacing the Main Control Board When No SeGW Is Deployed"and "Replacing the Main Control Board When an SeGW Is Deployed" of eNodeB ReconfigurationGuide.




l An ESD wrist strap or a pair of ESD gloves and an M3 Phillips screwdriver are available.


l When restoring software and configuration data using a USB flash drive, ensure that theUSB port on the main control board has been enabled.



43

The USB port on the main control board is enabled by default before delivery. Localengineers can run MML commands (DSP LOCALUSBPORT for the NodeB/eNodeB/BTS3900) to query the status of the USB port on the main control board. If the value ofEnable Flag is Enable, the USB port is enabled. If the value of Enable Flag isDISABLE, the USB port is disabled. To enable the USB port, run MML commands (SETLOCALUSBPORT for the NodeB/eNodeB/BTS3900) to set Enable Flag to ENABLE.

Contextl Replacing the LMPT has the following impacts on the base station:

– If no standby LMPT is configured in an eNodeB, replacing an LMPT will interrupt allservices carried by the eNodeB. Therefore, an LMPT must be replaced within 10minutes.

– For a multimode base station in dual-star topology, replacing the LMPT may decreasethe rate of GSM or UMTS data services. However, voice services will not be affected

l The LMPT is hot-swappable.l Figure 5-21 shows the position of the LMPT in the BBU.

Figure 5-21 Position of the LMPT

ProcessThe following figure shows the process for replacing the LMPT.




44

Figure 5-22 Process for replacing the LMPT





45


3. On the eNodeB, run the BLK CELL command to block all cells under the eNodeB.

NOTE




b. Optional: For an eNodeB, run the ULD LICENSE command to upload thelicense file to the server.















46












47










If... Then...





48

If... Then...





9. On the eNodeB, run the UBL CELL command to unblock all cells under the eNodeB.10. Optional: For an eNodeB, load a commercial license according to the instructions in

Installing the Stand-Alone License.11. Perform the operation of Browsing Current Alarms to compare the alarms queried

with the alarms queried before the replacement. Then handle the added alarmsaccording to the instructions in 3900 Series Base Station Alarm Reference.





3. Record all the cable connections on the panel of the module to be replaced.4. Remove the transmission cable from the LMPT. If a surge protection board is

configured, the surge protection transfer cable also needs to be removed, as shown inthe following figure.




49

5. Loosen the two M3 screws on the panel, raise the ejector lever, and pull out the LMPT,




Figure 5-24 Removing the LMPT

2

1

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, see LMPT.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.


8. Check the status of the new board by observing the status of indicators. For detailsabout the status of the indicators, see LMPT.





50

If... Then...






b. After the base station restarts, run the LST VER command to check whether allmodes have been loaded with the software of the target version. If not, run theDLD SOFTWARE command to redownload the software and then run the ACTSOFTWARE command to activate the software.



----End





5.3.6 Replacing the UBBPThis section describes the procedure and precautions for replacing a faulty UBBP in a BBU3900or BBU3910.

PrerequisitesNOTE

This section describes the procedure and precautions for replacing a faulty UBBP with a new one of thesame type. The UBBP cannot be used as a spare part for the WBBP or LBBP. If a UBBP is used for replacinga WBBP or LBBP, the procedure for replacing a WBBP or LBBP with a UBBP is the same as that forreplacing a UBBP with the one of the same type. For details about how to adjust the configurations, seeRAN Reconfiguration Guide or eRAN Reconfiguration Guide.






51

l An ESD wrist strap or a pair of ESD gloves and an M3 Phillips screwdriver are available.l Optional: If a UBBP is used for replacing a WBBP or LBBP, ensure that the license for

the corresponding mode has been obtained.l Associated personnel have gained permission to access the site and have obtained the

required keys.

Contextl Replacing the UBBP has the following impacts on the base station:

– When the UBBP serving as the converging party in a base station using the CPRI MUXfeature is reset abnormally or removed and inserted again, data and voice services ofthe converged party will be interrupted.

– When the UBBP serving as the converged party in a base station using the CPRI MUXfeature is reset abnormally or removed and inserted again, data service rate of theconverging party will decrease. However, voice services of the converging party willnot be affected.

l The UBBP is hot-swappable.l The following figure shows the position of the UBBP in the BBU3900 or BBU3910.

Figure 5-25 Position of the UBBP

ProcessThe following figure shows the process for replacing the UBBP.



52

Figure 5-26 Process for replacing the UBBP



2. Run the BLK BRD command to block the UBBP.





53

5. Run the UBL BRD command to unblock the UBBP.6. Perform the operation of Browsing Current Alarms to compare the alarms queried






3. Record all the cable connections on the panel of the module to be replaced.4. Remove the CPRI cables from the UBBP, as shown in the following figure.

Figure 5-27 Removing a CPRI cable

5. Loosen the two M3 screws on the panel, raise the ejector lever, and pull out the UBBP,






54

Figure 5-28 Removing a UBBP from the BBU



7. After the board starts up, wait 15 minutes. Then determine whether the board isfunctional according to the status of the indicators on the board. For details about thestatus of the indicators, see UBBP.




----End





5.3.7 Replacing the WBBPThis section describes the procedure and precautions for replacing a faulty WBBP in a BBU3900.



55





required keys.

Contextl When the WBBPf serving as the converging party in a base station using the CPRI MUX

feature is reset abnormally or removed and inserted again, data and voice services of theconverged party will be interrupted.

l The WBBP is hot-swappable.l The following figure shows the position of the WBBP in the BBU.

Figure 5-29 Position of the WBBP

ProcessThe following figure shows the process for replacing the WBBP.



56

Figure 5-30 Process for replacing the WBBP



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





57

5. On the NodeB, run the UBL BRD command to unblock the WBBP.6. Perform the operation of Browsing Current Alarms to compare the alarms queried






3. Record all the cable connections on the panel of the module to be replaced.4. Remove the CPRI cables from the WBBP, as shown in the following figure.


5. Loosen the two M3 screws on the panel, raise the ejector lever, and pull out the WBBP,






58

Figure 5-32 Removing the WBBP



7. After the board starts up, wait 15 minutes. Then determine whether the board isfunctional according to the status of the indicators on the board. For details about thestatus of the indicators, see WBBP.




----End





5.3.8 Replacing the LBBPThis section describes the procedure and precautions for replacing a faulty LBBP in a BBU3900.



59





required keys.

Contextl When the LBBPd serving as the converged party in a base station using the CPRI MUX

feature is reset abnormally or removed and inserted again, data service rate of theconverging party will decrease. However, voice services of the converging party will notbe affected. When the LBBPd serving as the converging party in a base station using theCPRI MUX feature is reset abnormally or removed and inserted again, data and voiceservices of the converged party will be interrupted.

l The LBBP is hot-swappable.l The following figure shows the position of the LBBP in the BBU.

Figure 5-33 Position of the LBBP

ProcessThe following figure shows the process for replacing the LBBP.



60

Figure 5-34 Process for replacing the LBBP



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





61

5. On the eNodeB, run the UBL BRD command to unblock the LBBP.6. Perform the operation of Browsing Current Alarms to compare the alarms queried






3. Record all the cable connections on the panel of the module to be replaced.4. Remove the CPRI cables from the LBBP, as shown in the following figure.


5. Loosen the two M3 screws on the panel, raise the ejector lever, and pull out the LBBP,






62

Figure 5-36 Removing the LBBP



7. After the board starts up, wait 15 minutes. Then determine whether the board isfunctional according to the status of the indicators on the board. For details about thestatus of the indicators, see LBBP.




----End





5.3.9 Replacing the UPEUThis section describes the procedure and precautions for replacing a faulty UPEU in aBBU3900 or BBU3910.



63





required keys.

Contextl Replacing the UPEU has the following impacts on the base station:

– If a base station is configured with one UPEU, replacing the UPEU will cut off thepower supply to the BBU and interrupt all the services carried by the base station.

– If a base station is configured with two UPEUs, replacing one UPEU will cause thefailure to monitor the external equipment.

l The following figure shows the position of the UPEU in the BBU.

Figure 5-37 Position of the UPEU

ProcessThe following figure shows the process for replacing the UPEU.



64

Figure 5-38 Process for replacing the UPEU




NOTE




65

NOTE









NOTE
















66

4. Turn off the switch on the UPEU to power off the UPEU.

5. Remove the power cable, monitoring cable, and alarm cable from the UPEU, as shownin the following figure.

CAUTIONBefore removing the BBU power cable, turn off the BBU circuit breaker on the powerdevice that supplies power to the BBU. If there is no such circuit breaker, remove theBBU power cable connector from the power device.


6. Loosen the two M3 screws on the panel, and pull out the UPEU, as shown in thefollowing figure.


subrack slowly.


Figure 5-40 Removing the UPEU



67

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

CAUTIONl Remove and install a BBU board strictly according to instructions in 5.1 Boards

Operation Regulations.

l Ensure that the BBU power cable to be connected in a running base station isconnected to the BBU first and then to the power equipment. The operation in thereverse sequence may cause personal injury or component damage.

8. Turn on the switch on the UPEU to power on the UPEU.

9. Check the status of the new board by observing the status of indicators. For detailsabout the status of the indicators, see UPEU.




----End





5.3.10 Replacing the UEIUThis section describes the procedure and precautions for replacing a faulty UEIU in aBBU3900 or BBU3910.








68

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

the UEIU must be replaced within 5 minutes.l The UEIU is hot-swappable.l The following figure shows the position of the UEIU in the BBU.

Figure 5-41 Position of the UEIU

ProcessThe following figure shows the process for replacing the UEIU.



69

Figure 5-42 Process for replacing the UEIU









70







4. Disconnect the monitoring signal cable and alarm cable from the UEIU, as shown inthe following figure.

Figure 5-43 Disconnecting the cables

5. Loosen the two M3 screws on the panel, and pull out the UEIU, as shown in thefollowing figure.

Figure 5-44 Removing the UEIU

21





71




----End





5.3.11 Replacing the FAN UnitThis section describes the procedure and precautions for replacing a faulty FAN unit in aBBU3900 or BBU3910.






Contextl Replacing the FAN unit may cause overtemperature alarms due to interruption of heat

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

l The FAN unit is hot-swappable.

l The following figure shows the position of the FAN unit in the BBU.

Figure 5-45 Position of the FAN unit



72

ProcessThe following figure shows the process for replacing the FAN unit.

Figure 5-46 Process for replacing the FAN unit



2. Instruct the site engineer to replace the board.3. Receive the information that the site engineer has replaced the board.



73






3. Loosen the two M3 screws on the panel, and pull out the FAN unit, as shown in thefollowing figure.



NOTICEWhen removing the FAN unit, do not touch a rotating fan to avoid injury to your hands.



74

Figure 5-47 Removing the FAN unit

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

5. Check the status of indicators on the new FAN unit to determine whether the newFAN unit is working properly. For details about the status of the indicators, see FAN.




----End





5.3.12 Replacing the UTRPThis section describes the procedure and precautions for replacing a faulty UTRP in aBBU3900 or BBU3910.







75


Contextl If a multimode base station implements co-transmission through shared ports on the UTRP,

replacing the UTRP will interrupt the services of the peer mode.l The UTRP is hot-swappable.l The following figure shows the position of the UTRP in the BBU.

Figure 5-48 Position of the UTRP

ProcessThe following figure shows the process for replacing the UTRP.



76

Figure 5-49 Process for replacing the UTRP




NOTE




77

NOTE









NOTE
















78

4. Remove the transmission cable from the UTRP. If a surge protection board isconfigured, the surge protection transfer cable also needs to be removed, as shown inthe following figure.


5. Loosen the two M3 screws on the panel, raise the ejector lever, and pull out the UTRP,




Figure 5-51 Removing the UTRP

6. Install the new board, lower the ejector levers, tighten the screws on the board panel




79


7. Set the DIP switches on the new board to the same as the settings of the DIP switcheson the replaced board. For details about the DIP switch, see UTRP.

8. Check the status of the new board by observing the status of indicators. For detailsabout the status of the indicators, see UTRP.

9. Take off the ESD wrist strap or ESD gloves, and pack up all tools.10. Inform the remote engineer that the board has been replaced.11. After receiving the notification from remote engineers, perform the operation of


----End



5.3.13 Replacing the USCUThis section describes the procedure and precautions for replacing a faulty USCU in aBBU3900 or BBU3910.





required keys.

Contextl The USCU is hot-swappable.l The following figure shows the position of the USCU in the BBU.



80

Figure 5-52 Position of the USCU

ProcessThe following figure shows the process for replacing the USCU.

Figure 5-53 Process for replacing the USCU



81



2. Instruct the site engineer to replace the board.3. Receive the information that the site engineer has replaced the board.4. Perform the operation of Browsing Current Alarms to compare the alarms queried






3. Record all the cable connections on the panel of the module to be replaced.4. Remove the GPS clock signal cable from the USCU, as shown in the following figure.

Figure 5-54 Removing the cable

5. Loosen the two M3 screws on the panel, raise the ejector lever, and pull out the USCU,






82

Figure 5-55 Removing the USCU



7. Check the status of the new board by observing the status of indicators. For detailsabout the status of the indicators, see USCU.




----End





5.3.14 Replacing the UBRIThis section describes the procedure and precautions for replacing a faulty UBRI in aBBU3900 or BBU3910.



83





required keys.

Contextl The UBRI is hot-swappable.l The following figure shows the position of the UBRI in the BBU.

Figure 5-56 Position of the UBRI in the BBU

ProcessThe following figure shows the process for replacing the UBRI.



84

Figure 5-57 Process for replacing the UBRI




NOTE




85

NOTE









NOTE
















86

4. Remove the CPRI cables from the UBRI, as shown in the following figure.


5. Loosen the two M3 screws on the panel, raise the ejector lever, and pull out the UBRI,




Figure 5-59 Removing the UBRI

2

1

6. Install the new board, lower the ejector levers, tighten the screws on the board panel



7. Check the status of the new board by observing the status of indicators. For detailsabout the status of the indicators, see UBRI.

8. Take off the ESD wrist strap or ESD gloves, and pack up all tools.9. Inform the remote engineer that the board has been replaced.10. After receiving the notification from remote engineers, perform the operation of


----End



87



5.3.15 Replacing the UCIUThis section describes the procedure and precautions for replacing a faulty UCIU in a BBU3900.





required keys.

Contextl When the UCIU is faulty or is replaced, services carried by RF modules in GU or GL mode

are affected. In this situation, services of one mode can be restored automatically. Servicesof the other mode can be restored only after the fault is rectified or the UCIU is reset.

l The UCIU is hot-swappable.l The following figure shows the position of the UCIU in the BBU.

Figure 5-60 Position of the UCIU

ProcessThe following figure shows the process for replacing the UCIU.



88

Figure 5-61 Process for replacing the UCIU









89




3. Record all the cable connections on the panel of the module to be replaced.4. Remove the interconnection cable between optical ports from the UCIU, as shown in

the following figure.


5. Loosen the two M3 screws on the panel, raise the ejector lever, and pull out the UCIU,






90



7. Check the status of the new board by observing the status of indicators. For detailsabout the status of the indicators, see UCIU.




----End





5.3.16 Replacing the Optical ModuleThis section describes the procedure and precautions for replacing a faulty optical module.

Prerequisitesl To confirm the type of a faulty optical module, perform the following steps:

1. For a GBTS, run the DSP BTSOPTMODULE command on the U2000 to query thetype of the optical module. For an eGBTS, NodeB, or eNodeB, run the DSP SFPcommand on the U2000 to query the type of the optical module.



91

2. Identify the type of the faulty module according to the values of Rate, Wavelength,and Transmission mode queried by the command, and obtain an optical module ofthe same type as the faulty one according to the label on the new module. The followingfigure shows the label on an optical module.

Figure 5-63 Label on an optical module

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

NOTE

If the software version does not support querying of the type of an optical module by using an MMLcommand, obtain all types of optical modules.


required keys.

Contextl The optical module, fiber optic cable, or cable is hot-swappable if the CPRI port remains

unchanged.l To prevent the ongoing services from being interrupted, you need to perform Step 1 to reset

the RRU after removing and reinstalling the optical module, fiber optic cable, or cable ifthe CPRI port is changed.

l The following figure shows the position of an optical module in a board.

Figure 5-64 Position of an optical module

(1) Optical module



92

Procedurel Replace the optical module.



2. Optional: If all types of optical modules have been obtained, select an optical moduleof the same type as the faulty one or an optical module that can replace the faulty oneaccording to the label on the faulty optical module and instructions in the related spareparts catalog.

NOTE

The optical module to be installed must have a matching rate with the corresponding CPRIport.

3. Record the position of the optical module in the board.

4. Press the latch on the optical connector, and then remove the connector from the faultyoptical module, as shown in the following figure.


CAUTIONDo not look into the optical module without eye protection after removing the fiberoptic cable from the optical module.



93

5. Lower the puller on the faulty optical module, and then pull the puller until the optical

module is removed from the BBU, as shown in the following figure.

Figure 5-66 Removing the optical module

6. Install the new optical module in to the BBU and then fasten the puller on the optical

module.7. Remove the dustproof caps from the new optical module and then insert the optical

connector into the new optical module.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 relatedhardware description.

9. Ask field engineers to reset the corresponding RF module.10. Take off the ESD wrist strap or ESD gloves, and pack up all tools.

l Perform the following operations remotely.1. Optional: Reset the RF module if the CPRI port is changed.

– For a GBTS, run the RST BTSBRD command to reset the RF module.

– For an eGBTS, NodeB, or eNodeB, run the RST BRD command to reset the RFmodule.

2. Perform rate negotiation for the link that is carried by the RRU.

NOTICERate negotiation interrupts services carried on the CPRI link for less than 2 minutes.

– For a GBTS, run the MML command DSP BTSCPRILBR to query the CPRI linerate. If the current rate differs from the planned rate, run the MML command STRBTSCPRILBRNEG to start rate negotiation.



94

– For an eGBTS, NodeB, or eNodeB, run the MML command DSP CPRILBR toquery the CPRI line rate. If the current rate differs from the planned rate, run theMML command STR CPRILBRNEG to start rate negotiation.

----End





5.4 Adding Boards to the BBUThis section describes how to add boards to the BBU during the maintenance.

5.4.1 Adding a UPEUThis section describes how to add a UPEU in different scenarios.

Adding a UPEUc

When the BBU is configured with a UPEUc and the power required by the BBU exceeds thepower supported by the configured UPEUc, you need to add a second UPEUc.

Prerequisitesl An ESD wrist strap or a pair of ESD gloves and an M3 Phillips screwdriver are available.


Contextl The UPEU is hot-swappable.

l The existing UPEUc is installed in slot 19 and the added UPEUc can be installed in slot18, as shown in the following figure.

Figure 5-67 Slot for the new UPEUc



95

ProcessThe following figure shows the process for adding a UPEUc.

Figure 5-68 Process for adding a UPEUc


1. Receive the information that the site engineer has replaced the board.2. Run an MML command on the U2000 to add the board.

– For a GBTS LMT, run the ADD BTSBRD command on the BSC to configure thenewly added board.

– For an eGBTS, NodeB, or eNodeB LMT, run the ADD BRD command on theeGBTS, NodeB, or eNodeB to configure the newly added board.

l Perform the following operations locally.1. Put on an ESD wrist strap or a pair of ESD gloves.


2. Install a UPEUc in slot 18 and tighten the screws on the panel to 0.6 N·m (5.31 lbf·in.),as shown in the following figure.



96

Figure 5-69 Installing the UPEUc


3. Install the power cable for the added UPEUc.

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

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


4. Turn on the power switch for the UPEUc to power on the UPEUc.



7. Inform the remote engineer that the board has been installed.

----End

Follow-up ProcedurePlace the replaced component into an ESD box or bag. Then, place the ESD box or bag into afoam-padded carton or the packing box of the new module.



97

Replacing a UEIU with a UPEUcWhen the BBU is configured with a UPEUc and a UEIU and the power required by the BBUexceeds the power supported by the UPEUc, you need to replace the UEIU with a UPEUc.

Prerequisitesl An ESD wrist strap or a pair of ESD gloves and an M3 Phillips screwdriver are available.l Associated personnel have gained permission to access the site and have obtained the

required keys.

Contextl The UEIU and UEPU are hot-swappable.l The UPEUc is installed in slot 19 and the UEIU to be replaced is installed in slot 18, as

shown in the following figure.

Figure 5-70 Slot housing the UEIU to be replaced

ProcessThe following figure shows the process for replacing the UEIU with a UPEUc.



98

Figure 5-71 Process


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.



5. Run an MML command on the U2000 to add the board.





99



3. Record all the cable connections on the panel of the board to be replaced.4. Disconnect the monitoring signal cable and alarm cable from the UEIU, as shown in

the following figure.


5. Loosen the two M3 screws on the panel, and pull out the UEIU, as shown in the

following figure.


21

6. Install a UPEUc in slot 18 and tighten the screws on the UPEUc to 0.6 N·m (5.31

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



100






8. Connect the cables to corresponding ports on the UPEUc according to the cableconnection record for the UEIU.

9. Turn on the power switch for the UPEUc to power on the UPEUc.10. Check the status of the new board by observing the status of indicators. For details

about the status of the indicators, see UPEU.11. Take off the ESD wrist strap or ESD gloves, and pack up all tools.12. Inform the remote engineer that the board has been installed.

----End


Replacing One UPEUa Board with Two UPEUc BoardsWhen the BBU is configured with a UPEUa and the power required by the BBU exceeds thepower supported by the UPEUa, you need to replace the UPEUa with two UPEUc boards.



101


required keys.

Contextl The UPEU is hot-swappable.l The following figure shows the slot that houses the UPEUa to be replaced.

Figure 5-75 Slot housing the UPEUa to be replaced

ProcessThe following figure shows the process for replacing the UPEUa board with two UPEUc boards.



102

Figure 5-76 Process


1. Receive the information that the site engineer has replaced the board.2. Run an MML command on the U2000 to add the board.






103


2. Install a UPEUc in slot 18 and tighten the screws on the panel to 0.6 N·m (5.31 lbf·in.),as shown in the following figure.







4. Turn on the power switch for the UPEUc to power on the UPEUc.

5. Record all the cable connections on the UPEUa in slot 19 and power off the UPEUa.



104


6. Remove all the cables from the UPEUa in slot 19, as shown in the following figure.


7. Loosen the two M3 screws on the panel, and pull out the UPEU, as shown in the

following figure.






105


9. Connect the cables to corresponding ports on the UPEUc that has replaced the UPEUabased on the cable connection record for the UPEUa.


10. Turn on the power switch for the UPEUc in slot19 to power on the UPEUc.




----End



Replacing a UEIU and a UPEUa with Two UPEUc Boards

When the BBU is configured with a UPEUa and a UEIU and the power required by the BBUexceeds the power supported by the UPEUa, you need to replace the UEIU and UPEUa withtwo UPEUc boards.




106


Contextl The UPEU is hot-swappable.l A UEIU is installed in slot 18 and a UPEUa is installed in slot 19, as shown in the following

figure.

Figure 5-81 Slots housing the UEIU and UPEUa

ProcessThe following figure shows the process for replacing the UEIU and UPEUa with two UPEUcboards.



107

Figure 5-82 Process


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.3. Instruct the site engineer to replace the board.4. Receive the information that the site engineer has replaced the board.



108






3. Record all the cable connections on the panels of the UEIU and UPEUa.4. Remove the monitoring cable and alarm cable from the UEIU, as shown in the

following figure.


5. Loosen the two M3 screws on the panel, and pull out the UEIU, as shown in the

following figure.


21





109

Figure 5-85 Installing a UPEUc





8. Connect the cables to corresponding ports on the UPEUc according to the cableconnection record for the UEIU.

9. Turn on the power switch for the UPEUc to power on the UPEUc.10. Turn off the power switch for the UPEUa in slot 19 to power off the UPEUa.11. Remove the power cable, monitoring cable, and alarm cable from the UPEUa, as

shown in the following figure.




110


12. Loosen the two M3 screws on the panel, and pull out the UPEU, as shown in the

following figure.










111


15. Connect the cables to corresponding ports on the UPEUc that has replaced the UPEUabased on the cable connection record for the UPEUa.


16. Turn on the power switch for the UPEUc in slot 19 to power on the UPEUc.




----End


Replacing Two UPEUa Boards with Two UPEUc Boards

When the BBU is configured with two UPEUa boards and the power required by the BBUexceeds the power supported by the UPEUa boards, you need to replace the two UPEUa boardswith two UPEUc boards.



Contextl The UPEU is hot-swappable.

l Two UPEUa boards to be replaced are installed in slots 18 and 19, as shown in the followingfigure.



112

Figure 5-89 Slots housing two UPEUa boards

ProcessThe following figure shows the process for replacing the two UPEUa boards with two UPEUcboards.



113

Figure 5-90 Process

Procedurel Perform the following operations locally.



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

3. Turn on the power switch for the UPEUa in slot 18 to power on the UPEUa.



114

4. Remove all the cables from the UPEUa in slot 18, as shown in the following figure.



5. Remove the UPEUa in slot 18, as shown in the following figure.

Figure 5-92 Removing the UPEUa in slot 18

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





115


7. Connect the cables to corresponding ports on the UPEUc newly installed in slot 18based on the cable connection record for the UPEUa that has been removed from slot18.

8. Turn on the power switch for the UPEUc in slot 18 to power on the UPEUc.9. Turn off the power switch for the UPEUa in slot 19 to power off the UPEUc.10. Remove all the cables from the UPEUa in slot 19.


11. Remove the UPEUa in slot 19, as shown in the following figure.

Figure 5-94 Removing the UPEUa in slot 19





116

Figure 5-95 Installing a UPEUc in slot 19

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

based on the cable connection record for the UPEUa that has been removed from slot19.


14. Turn on the power switch for the UPEUc in slot 19 to power on the UPEUc.15. Check the status of the new board by observing the status of indicators. For details

about the status of the indicators, see UPEU.16. Take off the ESD wrist strap or ESD gloves, and pack up all tools.

----End


5.4.2 Adding a UBBPThis section describes how to install a UBBP when a UBBP is required.


required keys.l The corresponding license has been obtained.

Contextl After a UBBP is added, the power required by the BBU may be greater than the power

supported by the UPEU. Therefore, a UPEUc needs to be installed before the UBBP is



117

added. For details about the power specifications of the UPEU and how to install a UPEUc,see UPEU and 5.4.1 Adding a UPEU, respectively. In some high-temperature areas, if asecond UPEU is installed in the BBU in an outdoor AC cabinet, the FAN unit in the BBUmust be replaced with a FANc unit that can operate at a high speed. For details about howto replace a FAN unit, see 5.3.11 Replacing the FAN Unit.

NOTE

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

l For details about the slot assignment of the UBBP in the BBU, see BBU3900 SlotAssignment and BBU3910 Slot Assignment.

ProcessThe following figure shows the process for adding a UBBP.

Figure 5-96 Process for adding a UBBP


1. Field engineers have installed the UBBP.

2. Run the ADD BRD command to configure the newly added UBBP.

3. Run the MML command to add baseband resources, and deliver a license.

If... Then...

The base station is an eGBTS Run the ADD GBTSBBRES commandto deliver the UBBP multimode license(GSM).



118

If... Then...

The base station is a NodeB Run the ADD NODEBBBREScommand to deliver the UBBPmultimode license (UMTS).

The base station is an eNodeB for LTEFDD

Run the ADD ENODEBFDDBBREScommand to deliver the UBBPmultimode license (LTE FDD).

The base station is an eNodeB for LTETDD

Run the ADD ENODEBTDDBBREScommand to deliver the UBBPmultimode license (LTE TDD).




2. Install the UBBP in the corresponding slot, as shown in the following figure.


Figure 5-97 Installing the UBBP

3. If a CPRI cable needs to be connected to the newly added UBBP, install the CPRIcable according to the instructions in the related installation guide.



119

4. After the board starts up, wait 15 minutes. Then determine whether the board isfunctional according to the status of the indicators on the board. For details about thestatus of the indicators, see UBBP.

5. Take off the ESD wrist strap or ESD gloves, and pack up all tools.6. Inform the remote engineer that the board has been replaced.

----End

5.4.3 Adding a WBBPThis section describes how to install a WBBP when a WBBP is required.


required keys.

Contextl After a WBBP is added, the power required by the BBU may exceed the power supported

by the UPEU. Therefore, a UPEUc needs to be installed before the WBBP is added. Fordetails about the power specifications of the UPEU and how to install a UPEUc, see UPEUand 5.4.1 Adding a UPEU, respectively. In some hot areas, if a second UPEU is installedin the BBU in an outdoor AC cabinet, the FAN unit in the BBU must be replaced with aFANc unit that operates at a high speed. For details about how to replace a FAN unit, see5.3.11 Replacing the FAN Unit.

NOTE

In a hot area, the number of days with the maximum temperature higher than 45°C (113°F) exceeds10 in a year.

l For details about the slot assignment of the WBBP in the BBU, see BBU3900 SlotAssignment.

ProcessThe following figure shows the process for adding a WBBP.



120

Figure 5-98 Process


1. Receive the information that the site engineer has installed the board.2. On the NodeB, run the ADD BRD command to configure the newly added WBBP.



2. Install the WBBP in the corresponding slot, as shown in the following figure.




121

Figure 5-99 Installing the WBBP

3. If a CPRI cable needs to be connected to the newly added WBBP, install the CPRIcable according to the instructions in the related installation guide.

4. After the board starts up, wait 15 minutes. Then determine whether the board isoperational according to the status of the indicators on the board. For details about thestatus of the indicators, see WBBP.



----End

5.4.4 Adding an LBBPThis section describes how to install an LBBP when an LBBP is required.



Contextl The LBBP is hot-swappable.

l After an LBBP is added, the power required by the BBU may be greater than the powersupported by the UPEU. Therefore, a UPEUc needs to be installed before the LBBP isadded. For details about the power specifications of the UPEU and how to install a UPEUc,see UPEU and 5.4.1 Adding a UPEU, respectively. In some high-temperature areas, if asecond UPEU is installed in the BBU in an outdoor AC cabinet, the FAN unit in the BBUmust be replaced with a FANc unit that can operate at a high speed. For details about howto replace a FAN unit, see 5.3.11 Replacing the FAN Unit.

NOTE


l For details about the slot assignment of the LBBP in the BBU, see BBU3900 SlotAssignment.



122

ProcessThe following figure shows the process for adding an LBBP.

Figure 5-100 Process

Procedure

Step 1 Perform the following operations remotely.

1. Field engineers have installed the LBBP.

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

Step 2 Perform the following operations locally.


NOTICETake proper ESD protection measures, for example, put on an ESD wrist strap or a pair ofESD gloves, to prevent electrostatic damage to the boards, modules, or other electroniccomponents.

2. Install the LBBP in the corresponding slot, as shown in the following figure.

CAUTIONRemove and install a BBU board strictly according to instructions in 5.1 Boards OperationRegulations.



123

Figure 5-101 Installing the LBBP

3. If a CPRI cable needs to be connected to the newly added LBBP, install the CPRI cableaccording to the instructions in the related installation guide.

4. After the board starts up, wait 15 minutes. Then determine whether the board is functionalaccording to the status of the indicators on the board. For details about the status of theindicators, see LBBP.



----End

5.4.5 Adding a UTRPThis section describes how to install a UTRP when a UTRP is required.



Contextl The UTRP is hot-swappable.

l After a UTRP is added, the power required by the BBU may be greater than the powersupported by the UPEU. Therefore, a UPEUc needs to be installed before the UTRP isadded. For details about the power specifications of the UPEU and how to install a UPEUc,see UPEU and 5.4.1 Adding a UPEU, respectively. In some high-temperature areas, if asecond UPEU is installed in the BBU in an outdoor AC cabinet, the FAN unit in the BBUmust be replaced with a FANc unit that can operate at a high speed. For details about howto replace a FAN unit, see 5.3.11 Replacing the FAN Unit.

NOTE


l For details about the slot assignment of the UTRP in the BBU, see BBU3900 SlotAssignment and BBU3910 Slot Assignment.



124

ProcessThe following figure shows the process for adding a UTRP.

Figure 5-102 Process

Procedure

Step 1 Perform the following operations remotely.

1. Field engineers have installed the UTRP.


l For a GBTS LMT, run the ADD BTSBRD command on the BSC to configure the newlyadded board.

l For an eGBTS, NodeB, or eNodeB LMT, run the ADD BRD command on the eGBTS,NodeB, or eNodeB to configure the newly added board.

Step 2 Perform the following operations locally.


NOTICETake proper ESD protection measures, for example, put on an ESD wrist strap or a pair ofESD gloves, to prevent electrostatic damage to the boards, modules, or other electroniccomponents.

2. Install the UTRP in the corresponding slot and tighten the screws on the UTRP to 0.6 N·m(5.31 lbf·in.), as shown in the following figure.



125

CAUTIONRemove and install a BBU board strictly according to instructions in 5.1 Boards OperationRegulations.

Figure 5-103 Installing the UTRP

3. Install a transmission cable for the UTRP. For detailed operations, see the related

installation guide.4. Check the status of the new board by observing the status of indicators. For details about

the status of the indicators, see UTRP.5. Take off the ESD wrist strap or ESD gloves, and pack up all tools.6. Inform the remote engineer that the board has been replaced.

----End

5.5 Replacing Boards in the SLPUWhen maintaining the SLPU, the UELP or UFLP in the SLPU needs to be replaced.

5.5.1 Replacing a UELPThis section describes the procedure and precautions for replacing a Universal E1/T1 LightningProtection unit (UELP).


– If the board can be queried online, run an MML command online to query it accordingto the instructions in 5.3.1 Querying the Electronic Label.




126


required keys.

Contextl The following figure shows the UELP which is installed in the surge protection subrack

for transmission signals in BTS3900AL.

Figure 5-104 Position of a UELP in BTS3900AL

l The following figure shows the position of the UELP in the BBU in OMB.

Figure 5-105 Position of a UELP in OMB

l The following figure shows the position of the UELP in the Signal Lightning Protection

Unit (SLPU) in other cabinets.

Figure 5-106 Position of a UELP



127

l The UELP is hot-swappable.

ProcessThe following figure shows the Process for replacing the UELP.

Figure 5-107 Procedure for replacing the UELP






128










4. Disconnect the transmission cables from the UELP, as shown in the following figure.


5. Remove the two M3 screws on the panel, and pull out the UELP, as shown in thefollowing figure.


subrack slowly.




129

Figure 5-109 Removing the UELP

6. Set the DIP switch on the new board to the same settings as those on the replacedboard. For details about the DIP switch, see UELP.

7. Install the new board and tighten the screws on it to 0.6 N·m (5.31 lbf·in.).

8. Connect the cables back to the corresponding ports according to the record.




----End





5.5.2 Replacing the UFLPThis section describes the procedure and precautions for replacing the UFLP.


– If the board can be queried online, run an MML command online to query it accordingto the instructions in 5.3.1 Querying the Electronic Label.






130

Contextl The following figure shows the UFLP which is installed in the surge protection subrack

for transmission signals in BTS3900AL.

Figure 5-110 Position of a UFLP in BTS3900AL

l The following figure shows the position of the UFLP in the BBU in OMB.

Figure 5-111 Position of the UFLP in OMB

l The following figure shows the position of the UFLP in the SLPU in other cabinets.

Figure 5-112 Position of the UFLP

S

l The UFLP is hot-swappable.



131

ProcessThe following figure shows the process for replacing the UFLP.

Figure 5-113 Procedure for replacing the UFLP



2. Instruct the site engineer to replace the board.3. Receive the information that the site engineer has replaced the board.



132






3. Record all the cable connections on the panel of the module to be replaced.4. Disconnect transmission cables from the UFLP, as shown in the following figure.


5. Remove the two M3 screws on the panel, and pull out the UFLP, as shown in the

following figure.





133

Figure 5-115 Removing the UFLP

6. Install the new board, and tighten the screws on the board to 0.6 N·m (5.31 lbf·in.).7. Reconnect the cables according to the cable connection record.8. Take off the ESD wrist strap or ESD gloves, and pack up all tools.9. Inform the remote engineer that the board has been replaced.10. After receiving the notification from remote engineers, perform the operation of


----End





134

6 Replacing the Components in the APM,TMC, and Battery Cabinet

This chapter describes the procedures and precautions for replacing the components in the APMseries cabinets, TMC series cabinets and IBBS series cabinets.

In a DBS3900, the procedures for replacing the components in the APM30H series cabinets,TMC11H series cabinets, and IBBS series cabinets are the same as those for replacing thecomponents in the cabinets used by a BTS3900A. For detailed operations, see chapters"Replacing Components in an APM30H or a TMC11H", "Replacing Components in anIBBS200T or IBBS200D", and "Replacing Components in an IBBS700T or IBBS700D" incorresponding BTS3900A site maintenance guide. The following table lists related links.

Cabinet Link

APM30H (Ver.B)/TMC11H (Ver.B) Replacing Components in an APM30H orTMC11H

IBBS200D (Ver.B)/IBBS200T (Ver.B) Replacing Components in an IBBS200T orIBBS200D

APM30H (Ver.C)/TMC11H (Ver.C) Replacing Components in an APM30H orTMC11H

IBBS200D (Ver.C)/IBBS200T (Ver.C) Replacing Components in an IBBS200T orIBBS200D

APM30H (Ver.D)/TMC11H (Ver.D) Replacing Components in an APM30H orTMC11H

IBBS200D (Ver.D)/IBBS200T (Ver.D) Replacing Components in an IBBS200T orIBBS200D

IBBS700D/IBBS700T Replacing Components in an IBBS700T orIBBS700D

DBS3900Site Maintenance Guide

6 Replacing the Components in the APM, TMC, and BatteryCabinet


135

7 Replacing the Components in an OMB

About This Chapter

This chapter describes the procedure and precautions for replacing the components in an OMB.

7.1 Replacing an HEUAThis section describes the procedure and precautions for replacing a Heat Exchange Unit typeA (HEUA).

7.2 Replacing an EPS30-4815AFThis section describes the procedures for replacing an EPS30-4815AF.

7.3 Replacing a DCDU-03B, DCDU-11B, or DCDU-12BWhen the DBS3900 uses an OMB, IMB03, or 19-inch rack, the DCDU-03B, DCDU-11B, orDCDU-12B (shortened to DCDU in this section) is used to distribute DC power to the BBU andRRUs. This section describes the procedure for replacing a DCDU.

7.4 Replacing the AC Surge Protection BoxThis section describes the procedure and precautions for replacing the AC surge protection box.

DBS3900Site Maintenance Guide 7 Replacing the Components in an OMB


136

7.1 Replacing an HEUAThis section describes the procedure and precautions for replacing a Heat Exchange Unit typeA (HEUA).

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

and an M3 Phillips screwdriver.


– If the board can be queried online, run the associated command on the LMT accordingto the instructions in Querying the Electronic Label.


l The quantity and types of boards to be replaced are confirmed, and new boards are available.


Context

The following figure shows the position of the HEUA in the OMB.

Figure 7-1 Position of the HEUA in the OMB

HEUA



137

Procedure

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

NOTICETake proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESDgloves, to prevent electrostatic damage to the boards, modules, or other electronic components.

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

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

Step 4 Disconnect the monitoring cable and power cable from the HEUA, as shown in the followingfigure.


Step 5 Remove the four M3 screws from the cover plate, and remove the cover plate. Remove the fourM3 screws from the HEUA and remove the HEUA, as shown in the following figure.

Figure 7-3 Removing the HEUA

Step 6 Install the new HEUA and tighten the screws on it to 0.55 N·m (4.87 lbf·in.).

Step 7 Install the cover plate and tighten the screws on it to 0.55 N·m (4.87 lbf·in.).

Step 8 Connect the cables back to the corresponding ports according to the record.

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

----End



138




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

an M3 Phillips screwdriver, and an M6 Phillips screwdriver.l Associated personnel have gained permission to access the site and have obtained the

required keys.

Contextl Replacing an EPS30-4815AF interrupts the services carried on the base station.l Replacing an EPS30-4815AF takes about 20 minutes.l When a component of the EPS30-4815AF is faulty, replace the board of the faulty

component. When the entire EPS30-4815AF is faulty, replace the entire EPS30-4815AF.

NOTE

l If you have confirmed that the subrack is faulty and needs to be replaced, you need to removethe DCDU-05, PSUs, and PMU before removing the EPS30-4815AF from the cabinet.

l If you have confirmed that the entire EPS30-4815AF is faulty, you need to remove only the entireEPS30-4815AF from the cabinet.

l The following figure shows the positions of the EPS30-4815AF in an OMB and an IMB03.

Figure 7-4 Positions of the EPS30-4815AF



139

l The following figure shows the positions of the components of an EPS30-4815AF.

Figure 7-5 Positions of the components

(1) DCDU-05 (2) PSU (GERM4815T) (3) PMU (EPMU03) (4) EPS30-4815AF subrack

Procedure

Step 1 Power off the EPS30-4815AF



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

Step 4 Remove the component to be replaced.l Removing the entire EPS30-4815AF1. Remove all cables from and to the EPS30-4815AF.2. Loosen the four M6 screws on the mounting ears of the EPS30-4815AF, and remove the

EPS30-4815AF, as shown in the following figure.



140

Figure 7-6 Removing the EPS30-4815AF

l Removing the DCDU-051. Remove the DC output power cable from the DCDU-05, as shown in the following figure.

Figure 7-7 Removing the cable from the DCDU-05

2. Loosen the M3 screw on the DCDU-05 panel, and remove the DCDU-05, as shown in the

following figure.



141

Figure 7-8 Removing the DCDU-05

l Removing a PSULoosen the M3 screw on the PSU panel, and remove the PSU, as shown in the following figure.

Figure 7-9 Removing a PSU

l Removing the PMU1. Remove the monitoring signal cable from the PMU, as shown in the following figure.

Figure 7-10 Removing the cable from the PMU

2. Loosen the M3 screw on the PMU panel, and remove the PMU, as shown in the following

figure.



142

Figure 7-11 Removing the PMU

3. Set the DIP switch on the new PMU according to the settings of the DIP switch on thefaulty PMU. For details about the DIP switch, see PMU (EPMU03).

l Removing the subrack

1. Remove all cables from and to the EPS30-4815AF.

2. Remove the DCDU-05, PSUs, and PMU from the subrack.

3. Loosen the four M6 screws on the mounting ears of the subrack, and remove the subrack,as shown in the following figure.

Figure 7-12 Removing the subrack



143

Step 5 Install a new component.

l Install the new EPS30-4815AF, tighten the screws on the mounting ears to 2 N·m (17.70lbf·in.), and then reconnect related cables.

l Install the new DCDU-05, tighten the screw on the panel to 0.55 N·m (4.87 lbf·in.), andthen 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, tighten the screw on the panel to 0.55 N·m (4.87 lbf·in.), and thenreconnect related cables.

l Install the new subrack, tighten the screws on the mounting ears to 2 N·m (17.70 lbf·in.),install the DCDU-05, PSUs, and PMU in sequence, and then reconnect related cables.

Step 6 Power on the EPS30-4815AF

Step 7 Check whether the EPS30-4815AF works properly according to the status of indicators on theEPS30-4815AF, BBU, and RRUs.

NOTE

For details about the indicators on the EPS30-4815AF, BBU, and RRUs, see the corresponding hardwaredescription.


----End






Prerequisitesl An ESD wrist strap or a pair of ESD gloves and an M6 screwdriver are available.


Context

l Replacing a DCDU interrupts all the services carried on the base station.

l Replacing a DCDU takes about 20 minutes.



144

l An OMB can only use the DCDU-03B. An IMB03 or 19-inch rack can use the DCDU-03B,DCDU-11B, or DCDU-12B.

l This section describes the procedure for replacing the DCDU-03B in an OMB. Theprocedures for replacing the DCDU-11B and DCDU-12B are the same.

l The following figure shows the positions of the DCDU in an OMB and the DCDU in anIMB03.

Figure 7-13 DCDUs in an OMB and an IMB03

Procedure




145


Step 2 Modify the administrative state and block all cells managed by the BBU powered by the DCDUto be replaced and all RRUs powered by the DCDU. For detailed operations, see 5.2 Replacingthe BBU Case and RRU Hardware Maintenance Guide.

Step 3 Optional: Before replacing a DCDU-03B or DCDU-11B, record the status of circuit breakersSW0 to SW9 on the DCDU, and set all the circuit breakers to OFF. If a DCDU-12B is to bereplaced, skip this step.

Step 4 Turn off the DCDU circuit breaker on the external power device.

Step 5 Record the installation positions (DC output ports) of all connectors on the DCDU, and removethe connectors.

Step 6 Use a Phillips screwdriver to remove the protective cover for the DC input wiring terminal blockfrom the DCDU.

Step 7 Disconnect cables from the DCDU, as shown in the following figure.


Step 8 Loosen the four M6 panel screws, and remove the DCDU, as shown in the following figure.



146

Figure 7-15 Removing the DCDU

Step 9 Place the new DCDU on the installation position, and gently push it into the cabinet along theguide rails. Tighten the two M6 screws on each side of the DCDU to 2 N·m (17.7 lbf·in.).

Step 10 Remove the protective cover for the DC input wiring terminal block from the new DCDU,reconnect the power cables to the new DCDU according to the recorded installation positions,and then reinstall the protective cover.

Step 11 Reinstall the cables to the new DCDU according to the recorded installation positions.

Step 12 Turn on the DCDU circuit breaker on the external power device.

Step 13 Optional: Set the circuit breakers that were set to OFF in Step 3 to ON.

Step 14 Check the indicators on the BBU and RRUs according to the following table to verify that thesecomponents are properly powered by the DCDU.



147

Table 7-1 Maintenance checklist

Item Normal Status

Indicators on the BBU l UPEU: The RUN indicator is steady on.l FAN: The STATE indicator is blinking green

(on for 1s and off for 1s).l The normal status of the indicators on the BBU

is as follows:RUN indicator: blinking green (on for 1s andoff for 1s)ALM indicator: steady offACT indicator: steady on

Indicators on the RRU panel l RUN indicator: blinking green (on for 1s andoff for 1s)

l ALM indicator: steady off


----End







and an M4 screwdriver.

l The quantities and types of AC surge protection boxes to be replaced are confirmed, andnew AC surge protection boxes are available.


Contextl Replacing an AC surge protection box interrupts the surge protection for the base station.

l Therefore, the AC surge protection box must be replaced within 10 minutes.

l The following figure shows the position of the AC surge protection box in an OMB.



148

Figure 7-16 Position of the AC surge protection box

(1) AC surge protection box

Procedure

Step 1 Power off the base station.




Step 4 Disconnect the monitoring cable and power cable from the AC surge protection box, as shownin the following figure.




149

Step 5 Use an M4 screwdriver to remove the screw on the panel of the AC surge protection box, andpull it out of the cabinet, as shown in following figure.

Figure 7-18 Removing the AC surge protection box

Step 6 Install the new AC surge protection box, and tighten the screw on the panel to 1.2 N·m (10.62lbf·in.).

Step 7 Reconnect the cables according to the cable connection record.

Step 8 Power on the base station.


----End





150

8 Replacing the Components in an OMB(Ver.C)

About This Chapter

This chapter describes the procedure and precautions for replacing the components in an OMB(Ver.C).

8.1 Replacing the ELUThis section describes the procedure and precautions for replacing the ELU.

8.2 Replacing an HEUBThis section describes the procedure and precautions for replacing a Heat Exchange Unit typeB (HEUB).

8.3 Replacing a PDU10D-01This section describes the procedure for replacing a PDU10D-01.

8.4 Replacing a PMU 11AThis section describes the procedure for replacing a PMU 11A (shortened to PMU in thissection).

8.5 Replacing a PSU (R4850G2)This section describes the procedure for replacing a PSU (R4850G2), which is shortened to PSUin this section.

8.6 Replacing an ETP48100-A1 SubrackThis section describes the procedure for replacing an ETP48100-A1 (shortened to ETP in thissection) subrack that is used in an AC cabinet.

8.7 Replacing the FuseThis section describes the procedure and precautions for replacing the fuse.


8.9 Replacing a GPS Surge ProtectorThis section describes the procedure and precautions for replacing the GPS surge protector.

DBS3900Site Maintenance Guide 8 Replacing the Components in an OMB (Ver.C)


151

8.1 Replacing the ELUThis section describes the procedure and precautions for replacing the ELU.


a flat-head screwdriver, a Phillips screwdriver, and an ESD box or bag.l The type of the component to be replaced is confirmed according to Querying the Electronic

Label of the Cabinet, and a new component is available.l Associated personnel have gained permission to access the site and have obtained the

required keys.l The new component is intact, and its hardware version is the same as that of the component

to be replaced.

Contextl For the position of the ELU, see ELU.l It takes about 5 minutes to replace an ELU.

Procedure

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

NOTICETake proper ESD protection measures, for example, put on an ESD wrist strap or ESD gloves,to prevent electrostatic damage to the boards, modules, or electronic components.

Step 2 Remove the faulty ELU, as shown in the following figure.1. Remove the RJ45 connector and cable from the top of the ELU.2. Optional: Open the cover for the ELU. Skip this step when replacing the ELU in a BTS3900

or BTS3900L. Push the housing of the faulty ELU upwards according to the arrow directionon the housing.

3. Use a Phillips screwdriver to remove the two M4x8 screws from the ELU, as shown in thefollowing figure.



152

Figure 8-1 Removing a faulty ELU

Step 3 Install a new ELU.

1. Place the new ELU on the installation position, and use two M4x8 screws to secure theELU to 1.2 N·m (10.62 lbf·in.).

2. Reinstall the RJ45 connector to the port on the top of the ELU.

3. Optional: Reinstall the cover for the ELU. Skip this step when replacing the ELU in aBTS3900 or BTS3900L.


----End





8.2 Replacing an HEUBThis section describes the procedure and precautions for replacing a Heat Exchange Unit typeB (HEUB).


and an M3 Phillips screwdriver.



153

l The quantity and types of boards to be replaced are confirmed, and new boards are available.l Associated personnel have gained permission to access the site and have obtained the

required keys.

ContextThe following figure shows the position of the HEUB in the OMB.

Figure 8-2 Position of the HEUB in the OMB

Procedure



Step 2 Remove the connector from the LOAD9 port on the PDU10D-01.


Step 4 Disconnect the monitoring cable and power cable from the HEUB, as shown in the followingfigure.



154


Step 5 Remove the four M3 screws from the HEUB and remove the HEUB, as shown in the followingfigure.

Figure 8-4 Removing the HEUB

Step 6 Install the new HEUB and tighten the screws on it to 0.55 N·m (4.87 lbf·in.).

Step 7 Connect the cables back to the corresponding ports according to the record.


----End







155

8.3 Replacing a PDU10D-01This section describes the procedure for replacing a PDU10D-01.

Prerequisitesl An ESD wrist strap or a pair of ESD gloves and an M6 screwdriver are available.l The type of the component to be replaced is confirmed according to Querying the Electronic


required keys.

Contextl Replacing a PDU10D-01 interrupts the services carried on the base station.l Replacing a PDU10D-01 takes about 20 minutes.l The following figure shows the position of the PDU10D-01 in an OMB.

Figure 8-5 Position of the PDU10D-01

Procedure





156

Step 2 Switch off the external power supply to power off the PDU10D-01.

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

Step 4 Disconnect the power cables from the PDU10D-01, as shown in the following figure.


Step 5 Remove the four M6 screws from the panel, and then remove the PDU10D-01, as shown in thefollowing figure.

Figure 8-7 Removing the PDU10D-01

Step 6 Install the new PDU10D-01, tighten the screws on the PDU10D-01 to 1.4 N·m (12.39 lbf·in.),and reconnect the cables.

Step 7 Switch on the external power supply to power on the PDU10D-01.

Step 8 Observe the status of indicators on the BBU and RRUs listed in the following table to determinewhether the new PDU10D-01 is working properly.



157

Table 8-1 Checklist

Item Normal Status




Indicators on the RRU panel l The RUN indicator is blinking green (on for 1sand off for 1s).

l The ALM indicator is steady off.


----End





8.4 Replacing a PMU 11AThis section describes the procedure for replacing a PMU 11A (shortened to PMU in thissection).


a flat-head screwdriver, a Phillips screwdriver, a torque screwdriver, and an ESD box orbag.

l The type of the component to be replaced is confirmed according to Querying the ElectronicLabel of the Cabinet, and a new component is available.

l The new component is intact, and its hardware version is the same as that of the componentto be replaced.




158

Contextl The PMU is hot-swappable.l Replacing a PMU takes about 5 minutes.l The position of the PMU varies with the base station type. Table 8-2 describes the positions

of the PMU. Figure 8-8 shows the positions of the PMU.

Table 8-2 Positions of the PMU

Base Station Installation Position Reference

BTS3900A (Ver.D) EPU05A-02/04 in an APM30H(Ver.D)

Components of an EPU05A

BTS3900 (Ver.D) EPU05A-02 in an IMS06 in theBTS3900 (Ver.D) AC cabinet

BTS3900L (Ver.D) EPU05A-02 in an IMS06 in theBTS3900L (Ver.D) AC cabinet

DBS3900 EPU05A-03/05 in an APM30H(Ver.D) or ETP48100-A1 in anOMB (Ver.C)

Components of an EPU05A orComponents of an ETP48100-A1

BTS3900C (Ver.C) ETP48100-A1 in an OMB(Ver.C)

Components of an ETP48100-A1

BTS3900AL(Ver.A)

ETP48400 in a BTS3900AL(Ver.A) cabinet

Components of an ETP48400



159

Figure 8-8 Positions of the PMU



160

Procedure



Step 2 Remove the faulty PMU, as shown in the following figure.1. Record the cable connections on the panel of the faulty PMU, and disconnect the cables.2. Release the buckle on the upper right side of the faulty PMU, and lower the handle on the

right.3. Hold the handle and remove the faulty PMU from the slot.

Figure 8-9 Removing the faulty PMU

(1) Buckle (2) Handle

Step 3 Take out a new PMU, and set the DIP switch on the PMU panel according to the setting of theDIP switch on the faulty PMU. The following figure shows the position of the DIP switch.

Figure 8-10 Position of the DIP switch



161

NOTE

At a site configured with two or more APM30Hs, if two PMU units are connected to one RS485 bus forthe BBU, the monitoring address of the other PMU is set to 4. That is, the lower four bits of the DIP switchare set to 0010.

Step 4 Install the new PMU, as shown in the following figure.1. Release the buckle on the upper right side of the PMU, and lower the handle.2. Gently slide the new PMU into the corresponding subrack along the guide rails.3. Raise the handle, and fasten the buckle.4. Reconnect the cables to the new PMU according to the cable connection records.

Figure 8-11 Installing the PMU

Step 5 Check the status of indicators on the new PMU to determine whether the new PMU is workingproperly. When the new PMU is working properly, the RUN indicator is blinking green (on for1s and off for 1s, or on for 0.125s and off for 0.125s) and the ALM indicator is steady off.


----End



8.5 Replacing a PSU (R4850G2)This section describes the procedure for replacing a PSU (R4850G2), which is shortened to PSUin this section.





162




Contextl The PSU is hot-swappable.l It takes about 3 minutes to replace a PSU.l The position of the PSU varies with the base station type. Table 8-3 describes the positions

of the PSU. Figure 8-12 shows the positions of the PSU.

Table 8-3 Positions of the PSU

BaseStation

Installation Position See Section...

BTS3900A(Ver.D)

EPU05A-02/04 in an APM30H (Ver.D) Components of an EPU05A

BTS3900(Ver.D)

EPU05A-02 in an IMS06 in the BTS3900(Ver.D) AC cabinet

BTS3900L(Ver.D)

EPU05A-02 in an IMS06 in the BTS3900L(Ver.D) AC cabinet

DBS3900 EPU05A-03/05 in an APM30H (Ver.D) orETP48100-A1 in an OMB (Ver.C)

Components of an EPU05A orComponents of an ETP48100-A1

BTS3900C(Ver.C)

ETP48100-A1 in an OMB (Ver.C) Components of an ETP48100-A1

BTS3900AL(Ver.A)

ETP48400 in a BTS3900AL (Ver.A)cabinet

Components of an ETP48400



163

Figure 8-12 Positions of the PSU



164

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


Step 2 Remove the faulty PSU, as shown in the following figure.1. Release the buckle in the upper right of the faulty PSU, and lower the ejector lever on the

right.2. Hold the ejector lever and remove the faulty PSU from the slot.

Figure 8-13 Removing the faulty PSU

(1) Buckle (2) Ejector lever

Step 3 Install a new PSU, as shown in the following figure.1. Release the buckle in the upper right of the PSU, and lower the ejector lever on the right

side.2. Gently slide the new PSU into the corresponding subrack along the guide rails.3. Raise the ejector lever, and fasten the buckle.

Figure 8-14 Installing the PSU



165

Step 4 Check the status of indicators on the new PSU to determine whether the new PSU is workingproperly. When the power indicator is steady green, and the protection indicator and alarmindicator are steady off, the new PSU is working properly.


----End



8.6 Replacing an ETP48100-A1 SubrackThis section describes the procedure for replacing an ETP48100-A1 (shortened to ETP in thissection) subrack that is used in an AC cabinet.


an M3 screwdriver, and an M6 screwdriver.l The type of the component to be replaced is confirmed according to Querying the Electronic


required keys.

Contextl Replacing an ETP subrack interrupts the services carried on a cabinet.l Replacing an ETP subrack takes about 20 minutes.l The following figure shows the position of the ETP subrack in an OMB (Ver.C).



166

Figure 8-15 Position of the ETP subrack in an OMB (Ver.C)

(1) ETP subrack

Procedure



Step 2 Power off the ETP subrack.


Step 4 Disconnect cables1. Remove the monitoring signal cable from the PMU, as shown in the following figure.

Figure 8-16 Removing the monitoring signal cable from the PMU



167

2. Disconnect the AC and DC input power cables from the subrack, as shown in the followingfigure.

Figure 8-17 Disconnecting the cables from the EPU subrack

Step 5 Loosen the four M6 screws on the mounting ears of the subrack, and remove the subrack, asshown in the following figure.

Figure 8-18 Removing an ETP subrack



168

NOTE

l If you have confirmed that the ETP subrack is faulty and needs to be replaced, you need to remove thePSUs and PMU before removing the ETP subrack from the cabinet.

l If you have confirmed that the entire ETP subrack is faulty and needs to be replaced, you need to removeonly the entire ETP subrack from the cabinet.

Step 6 Install a new component.1. Install the new ETP subrack, tighten the screws on the mounting ears to 2 N·m (17.70

lbf·in.), and then reconnect related cables.2. When the ETP subrack is replaced, reinstall the PMU and PSUs in the new subrack, tighten

the screws on the panel to 0.55 N·m (4.87 lbf·in.), and then reconnect related cables.

Step 7 Power on the ETP subrack.

Step 8 Observe the status of indicators on the PMU and PSUs to determine whether the new ETPsubrack is working properly.l When the PMU is working properly, the RUN indicator is blinking green (on for 1s and off

for 1s), and the ALM indicator is steady off.l When the PSUs are working properly, the power indicators are steady green, and the

protection indicators and alarm indicators are steady off.


----End



8.7 Replacing the FuseThis section describes the procedure and precautions for replacing the fuse.


a flat-head screwdriver, an ESD box or bag, a new fuse, and a key to the cabinet door.l The quantities and types of fuses to be replaced are confirmed, and the require fuses are

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

required keys.



169

Context

NOTICEl Replacing a fuse on the power output port for the BBU interrupts all services carried by the

base station.l Replacing a fuse interrupts all services carried by the corresponding module.l The specifications of the fuse vary according to the ambient temperature. At temperatures

around 25oC (77oF), the current of a fuse must be equal to or lower than 75% of the ratedcurrent.

l The fuse is hot-swappable.l The following figure shows the positions of the fuse and spare fuse box in the PDU10D-01

in an OMB (Ver.C).

Figure 8-19 Positions of the fuse and spare fuse box in the PDU10D-01

(1) Spare fuse box

Procedure




170


Step 2 Remove the fuse to be replaced, as shown in the following figure.

Figure 8-20 Disconnecting the fuse to be replaced

Step 3 Take out a new fuse from the spare fuse box, as shown in the following figure.

Figure 8-21 Taking out a spare fuse

(1) Spare fuses

Step 4 Install the new fuse in the corresponding port, as shown in Figure 8-22.

Figure 8-22 Installing the new fuse



171

Step 5 Check the running status of the corresponding module to determine whether the new fuse isworking properly.


----End





and an M4 screwdriver.l The quantities and types of AC surge protectors to be replaced are confirmed, and new AC

surge protectors are available.l Associated personnel have gained permission to access the site and have obtained the

required keys.

Contextl Replacing an AC surge protection box interrupts the surge protection for the base station.l Therefore, the AC surge protection box must be replaced within 10 minutes.l The following figure shows the position of the AC surge protection box in an OMB (Ver.C).



172

Figure 8-23 Position of the AC surge protection box

(1) AC surge protection box



Step 2 Remove the board on which the indicator on the AC surge protection box is red, and install thenew board of the same type as the removed board, as shown in the following figure.



----End



173



8.9 Replacing a GPS Surge ProtectorThis section describes the procedure and precautions for replacing the GPS surge protector.


a torque wrench, and an inner hexagon wrench.l The type of the component to be replaced is confirmed according to Querying the Electronic

Label of the Cabinet, and a new component is available.l The new component is intact, and its hardware version is the same as that of the component

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

required keys.

Contextl It takes about 5 minutes to replace a GPS surge protector.l The following figure shows the position of a GPS surge protector.

Figure 8-25 Position of the GPS surge protector in an OMB (Ver.C)

(1) Frame (2) GPS surge protector



174

Figure 8-26 Position of the GPS surge protector in a BTS3900AL

(1) Frame (2) GPS surge protector

Procedure



Step 2 Remove the faulty GPS surge protector, as shown in the following figure.1. Disconnect the GPS jumper from the Surge terminal on the faulty GPS surge protector.2. Disconnect the PGND cable from the ground terminal of the faulty GPS surge protector.3. Remove the faulty GPS surge protector from the N50 straight female connector on the GPS

signal cable.



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Figure 8-27 Removing the faulty GPS surge protector

Step 3 Install the new GPS surge protector.1. Connect the Protect terminal on the faulty GPS surge protector to the N50 straight female

connector on the GPS signal cable.2. Connect the PGND cable to the ground terminal for the faulty GPS surge protector.3. Connect the GPS jumper to the Surge terminal on the faulty GPS surge protector.


----End





176

9 Replacing the Components in an IMB03

About This Chapter

This chapter describes the procedure and precautions for replacing the components in an IMB03.


9.2 Replacing an EPS4890 SubrackThis section describes the procedure for replacing an EPS4890 (shortened to EPS in this section)subrack that is used in a BTS3900 (Ver.B) cabinet or an IMB03 cabinet.

9.3 Replacing an EPS24S48100DC SubrackThis section describes the procedure for replacing an EPS24S48100DC (shortened to EPS inthis section) subrack that is used in a BTS3900 (Ver.B) cabinet, an APM30H (Ver.B), or anIMB03.

9.4 Replacing an ETP48100-B1 SubrackThis section describes the procedure for replacing an ETP48100-B1 (shortened to ETP in thissection) subrack that is used in an AC cabinet.

9.5 Replacing a PMU 01BThis section describes the procedure for replacing a PMU 01B (shortened to PMU in this section).

9.6 Replacing a PSU (EPW25-24S48D)This section describes the procedure for replacing a PSU (EPW25-24S48D) that is installed inan EPS24S48100DC in a BTS3900 (Ver.B) cabinet, an APM30H (Ver.B) cabinet, or an IMB03cabinet. PSU (EPW25-24S48D) is shortened to PSU in this section.

9.7 Replacing a PSU (EPW30-48A)This section describes the procedure for replacing a PSU (EPW30-48A), which is shortened toPSU in this section.


DBS3900Site Maintenance Guide 9 Replacing the Components in an IMB03


177



an M3 Phillips screwdriver, and an M6 Phillips screwdriver.


Contextl Replacing an EPS30-4815AF interrupts the services carried on the base station.

l Replacing an EPS30-4815AF takes about 20 minutes.

l When a component of the EPS30-4815AF is faulty, replace the board of the faultycomponent. When the entire EPS30-4815AF is faulty, replace the entire EPS30-4815AF.

NOTE

l If you have confirmed that the subrack is faulty and needs to be replaced, you need to removethe DCDU-05, PSUs, and PMU before removing the EPS30-4815AF from the cabinet.

l If you have confirmed that the entire EPS30-4815AF is faulty, you need to remove only the entireEPS30-4815AF from the cabinet.

l The following figure shows the positions of the EPS30-4815AF in an OMB and an IMB03.

Figure 9-1 Positions of the EPS30-4815AF

l The following figure shows the positions of the components of an EPS30-4815AF.



178

Figure 9-2 Positions of the components

(1) DCDU-05 (2) PSU (GERM4815T) (3) PMU (EPMU03) (4) EPS30-4815AF subrack

Procedure

Step 1 Power off the EPS30-4815AF




Step 4 Remove the component to be replaced.l Removing the entire EPS30-4815AF1. Remove all cables from and to the EPS30-4815AF.2. Loosen the four M6 screws on the mounting ears of the EPS30-4815AF, and remove the

EPS30-4815AF, as shown in the following figure.



179

Figure 9-3 Removing the EPS30-4815AF

l Removing the DCDU-051. Remove the DC output power cable from the DCDU-05, as shown in the following figure.

Figure 9-4 Removing the cable from the DCDU-05

2. Loosen the M3 screw on the DCDU-05 panel, and remove the DCDU-05, as shown in the

following figure.



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Figure 9-5 Removing the DCDU-05

l Removing a PSULoosen the M3 screw on the PSU panel, and remove the PSU, as shown in the following figure.

Figure 9-6 Removing a PSU

l Removing the PMU1. Remove the monitoring signal cable from the PMU, as shown in the following figure.

Figure 9-7 Removing the cable from the PMU

2. Loosen the M3 screw on the PMU panel, and remove the PMU, as shown in the following

figure.



181


3. Set the DIP switch on the new PMU according to the settings of the DIP switch on thefaulty PMU. For details about the DIP switch, see PMU (EPMU03).

l Removing the subrack

1. Remove all cables from and to the EPS30-4815AF.

2. Remove the DCDU-05, PSUs, and PMU from the subrack.

3. Loosen the four M6 screws on the mounting ears of the subrack, and remove the subrack,as shown in the following figure.

Figure 9-9 Removing the subrack



182


l Install the new EPS30-4815AF, tighten the screws on the mounting ears to 2 N·m (17.70lbf·in.), and then reconnect related cables.

l Install the new DCDU-05, tighten the screw on the panel to 0.55 N·m (4.87 lbf·in.), andthen 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, tighten the screw on the panel to 0.55 N·m (4.87 lbf·in.), and thenreconnect related cables.

l Install the new subrack, tighten the screws on the mounting ears to 2 N·m (17.70 lbf·in.),install the DCDU-05, PSUs, and PMU in sequence, and then reconnect related cables.

Step 6 Power on the EPS30-4815AF

Step 7 Check whether the EPS30-4815AF works properly according to the status of indicators on theEPS30-4815AF, BBU, and RRUs.

NOTE

For details about the indicators on the EPS30-4815AF, BBU, and RRUs, see the corresponding hardwaredescription.


----End





9.2 Replacing an EPS4890 SubrackThis section describes the procedure for replacing an EPS4890 (shortened to EPS in this section)subrack that is used in a BTS3900 (Ver.B) cabinet or an IMB03 cabinet.


a Phillips screwdriver, an ESD box or bag, and keys to the cabinet door.






183

Contextl Replacing an EPS subrack interrupts the services carried on a base station.l Replacing an EPS subrack takes about 25 minutes.l The following figure shows the positions of the EPS subrack in a BTS3900 (Ver.B) cabinet

and an IMB03 cabinet.

Figure 9-10 Positions of the EPS subrack

Procedure



Step 2 Set the BAT circuit breaker on the EPS subrack to OFF.

Step 3 Switch off external AC power supply to the EPS subrack.

Step 4 Disconnect the PGND cable for the EPS subrack from the ground bar on the inner left wall ofthe cabinet.

Step 5 Remove the PMU and all PSUs from the EPS subrack. For detailed operations, see 9.5 Replacinga PMU 01B and 9.7 Replacing a PSU (EPW30-48A).

Step 6 Use a Phillips screwdriver to remove the cable tray from the right side of the EPS subrack.

Step 7 Label the cables delivered with the EPS subrack on the right side of the EPS subrack, and removethe cables.



184

Step 8 Remove the screws from the AC protective cover on the EPS subrack, and then remove the ACprotective cover.

Step 9 Label the AC input and output power cables delivered with the EPS subrack on the left side ofthe EPS subrack, and remove the cables.

NOTICEThe PE wire of the AC input power cable is connected to a hexagonal screw on a mounting earof the EPS subrack. The hexagonal screw must be stored properly after the PE wire isdisconnected.

Step 10 Label the DC output power cables delivered with the EPS subrack on the right side of the EPSsubrack, and remove the cables.

Step 11 Remove the remaining four screws from both sides of the EPS subrack, and pull the EPS subrackout of the cabinet along the guide rails, as shown in the following figure. The figure usesBTS3900 (Ver.B) as an example.

NOTICEThe EPS subrack is heavy. Therefore, you need to hold the subrack with one hand and supportthe bottom with the other hand to slowly pull the subrack out of the cabinet. This prevents thesubrack from falling and ensures personal safety.

Figure 9-11 Removing an EPS subrack

Step 12 Slide the new EPS subrack into the original installation position along the guide rails, and thentighten the screws on both sides of the subrack.

Step 13 Optional: If the faulty EPS subrack uses 220 V AC three-phase input power, the short-circuitingbars at the AC INPUT terminals on the new EPS subrack must be removed.

Step 14 Reinstall the PMU and all PSUs in the corresponding slots in the EPS subrack.



185

Step 15 Connect the new power series 120 connector to the removed cable tray, and reinstall the cabletray onto the right inner side of the cabinet.

Step 16 Reinstall cables on the EPS subrack according to attached labels.

NOTICEThe PE wire of the AC input power cable must be connected to the hexagonal screw removedin Step 9. Otherwise, reliability risks may be caused.

Step 17 Install the AC protective cover on the left AC input area of the EPS subrack, and tighten thescrew on the cover.

Step 18 Restore external AC power supply to the EPS subrack.

Step 19 Set the three PSU circuit breakers on the EPS subrack to ON.

Step 20 Set the BAT circuit breaker on the EPS subrack to ON.

Step 21 Observe the status of indicators on the PMU and PSUs to determine whether the new EPS subrackis working properly.

l When the PMU is working properly, the RUN indicator is blinking green (on for 1s and offfor 1s), and the ALM indicator is steady off.

l When the PSUs are working properly, the power indicators are steady green, and theprotection indicators and alarm indicators are steady off.


----End





9.3 Replacing an EPS24S48100DC SubrackThis section describes the procedure for replacing an EPS24S48100DC (shortened to EPS inthis section) subrack that is used in a BTS3900 (Ver.B) cabinet, an APM30H (Ver.B), or anIMB03.


a Phillips screwdriver, an ESD box or bag, and keys to the cabinet door.




186



Contextl Replacing an EPS subrack interrupts the services carried on a cabinet.l Replacing an EPS subrack takes about 25 minutes.l The following figure shows the positions of the EPS subrack in a BTS3900 (Ver.B) cabinet,

an APM30H (Ver.B), and an IMB03.

Figure 9-12 Positions of the EPS subrack

Procedure



Step 2 Switch off external AC power supply to the EPS subrack.

Step 3 Label the cables on the EPS subrack, and remove the cables.

Step 4 Remove all PSUs from the EPS subrack. For detailed operations, see 9.6 Replacing a PSU(EPW25-24S48D).

Step 5 Remove the four M6x12 screws from the mounting ears on both sides of the EPS subrack, asshown in the following figure. The figure uses BTS3900 (Ver.B) as an example.



187

Figure 9-13 Removing an EPS subrack

Step 6 Use one hand to pull out the EPS subrack and the other hand to support the EPS subrack andthen remove it.

Step 7 Take out a new EPS subrack, perform the preceding operations in reverse sequence to installthe new EPS subrack in the cabinet, and install the removed PSUs into the EPS subrack.

Step 8 Reconnect the removed cables to the EPS subrack based on the cable connection records.

Step 9 Restore external AC power supply to the EPS subrack.

Step 10 Observe the status of indicators on the PSUs to determine whether the new EPS subrack isworking properly. When the PSUs are working properly, the power indicators are steady green,and the protection indicators and alarm indicators are steady off.


----End





9.4 Replacing an ETP48100-B1 SubrackThis section describes the procedure for replacing an ETP48100-B1 (shortened to ETP in thissection) subrack that is used in an AC cabinet.


an M3 screwdriver, and an M6 screwdriver.




188


Contextl Replacing an ETP subrack interrupts the services carried on a cabinet.l Replacing an ETP subrack takes about 20 minutes.l The following figure shows the position of the ETP subrack in an IMB03.

Figure 9-14 Position of the ETP subrack in an IMB03



Step 2 Power off the ETP subrack.


Step 4 Disconnect cables1. Remove the monitoring signal cable from the PMU, as shown in the following figure.

Figure 9-15 Removing the monitoring signal cable from the PMU



189

2. Disconnect the AC and DC input power cables from the subrack, as shown in the followingfigure.

Figure 9-16 Disconnecting the cables from the EPU subrack

Step 5 Loosen the four M6 screws on the mounting ears of the subrack, and remove the subrack, asshown in the following figure.

Figure 9-17 Removing an ETP subrack

NOTE

l If you have confirmed that the ETP subrack is faulty and needs to be replaced, you need to remove thePSUs and PMU before removing the ETP subrack from the cabinet.

l If you have confirmed that the entire ETP subrack is faulty and needs to be replaced, you need to removeonly the entire ETP subrack from the cabinet.



190


1. Install the new ETP subrack, tighten the screws on the mounting ears to 2 N·m (17.70lbf·in.), and then reconnect related cables.

2. When the ETP subrack is replaced, reinstall the PMU and PSUs in the new subrack, tightenthe screws on the panel to 0.55 N·m (4.87 lbf·in.), and then reconnect related cables.

Step 7 Power on the ETP subrack.

Step 8 Observe the status of indicators on the PMU and PSUs to determine whether the new ETPsubrack is working properly.

l When the PMU is working properly, the RUN indicator is blinking green (on for 1s and offfor 1s), and the ALM indicator is steady off.

l When the PSUs are working properly, the power indicators are steady green, and theprotection indicators and alarm indicators are steady off.


----End





9.5 Replacing a PMU 01BThis section describes the procedure for replacing a PMU 01B (shortened to PMU in this section).






Contextl The PMU is hot-swappable.

l Replacing a PMU takes about 5 minutes.

l The position of the PMU varies with the base station type. Table 9-1 describes the positionsof the PMU. Figure 9-18 shows the positions of the PMU.



191

Table 9-1 Positions of the PMU


BTS3900A (Ver.B) EPS 01A/01C in an APM30H(Ver.B)

Components of an EPS 01

BTS3900A (Ver.C) EPU03A-02/04 in an APM30H(Ver.C)

Components of an EPU03A

BTS3900 (Ver.B) EPS4890 in a BTS3900 (Ver.B)cabinet

Components of an EPS4890

BTS3900 (Ver.C) ETP48150-A3 in a BTS3900(Ver.C) cabinet

Components of an ETP48150-A3

DBS3900 l EPS4890 in an IMB03l EPS 01B/01D in an APM30H

(Ver.B)l EPU03A-03/05 in an

APM30H (Ver.C)

l Components of an EPS4890l Components of an EPS 01l Components of an EPU03A



192

Figure 9-18 Positions of the PMU

Procedure




193


Step 2 Remove the faulty PMU, as shown in the following figure.1. Record the cable connections on the panel of the PMU to be replaced.2. Disconnect the cables from the PMU.

NOTICEWhen plugging or unplugging the DB50 connector of the environment monitoring signalcable, you must press the latches on both sides of the DB50 connector and plug or unplugthe connector perpendicularly to or from the PMU panel to to avoid bending of pins, whichcauses alarms.

3. Use a Phillips screwdriver to remove the two screws from the handle on the panel of thePMU.

4. Gently pull the handle to slide the PMU out of the subrack and remove the PMU from thesubrack.


Step 3 Take out a new PMU, and set the DIP switch on the PMU panel according to the setting of theDIP switch on the faulty PMU. The following figure shows the position of the DIP switch.



194

Figure 9-20 Position of the DIP switch

NOTE

At a site configured with two or more APM30Hs, if two PMU units are connected to one RS485 bus forthe BBU, the monitoring address of the other PMU is set to 4. That is, the lower four bits of the DIP switchare set to 0010.

Step 4 Install the new PMU, as shown in the following figure.1. Place the new PMU in the corresponding slot, use a Phillips screwdriver to loosen the

screws on the handle on the panel of the new PMU, and raise the handle.2. Slide the new PMU along the guide rails into the subrack until it snaps shut, and lower the

handle.3. Tighten the two screws on the handle.4. Reconnect the cables to the new PMU according to the cable connection records.



195

Figure 9-21 Installing the PMU

Step 5 Check the status of indicators on the new PMU to determine whether the new PMU is workingproperly. When the new PMU is working properly, the RUN indicator is blinking green (on for1s and off for 1s) and the ALM indicator is steady off.


----End



9.6 Replacing a PSU (EPW25-24S48D)This section describes the procedure for replacing a PSU (EPW25-24S48D) that is installed inan EPS24S48100DC in a BTS3900 (Ver.B) cabinet, an APM30H (Ver.B) cabinet, or an IMB03cabinet. PSU (EPW25-24S48D) is shortened to PSU in this section.



196






Contextl The PSU is hot-swappable.

l Replacing a PSU takes about 3 minutes.

l The following figure shows the positions of the PSU in a BTS3900 (Ver.B) cabinet, anAPM30H (Ver.B) cabinet, and an IMB03 cabinet.


Procedure





197

Step 2 Remove the faulty PSU, as shown in the following figure.

1. Use a screwdriver to loosen the screws on the ejector lever on the panel of the PSU.

2. Gently pull the ejector lever to slide the PSU out of the subrack and remove the PSU fromthe subrack.

Figure 9-23 Removing the PSU

Step 3 Install a new PSU, as shown in the following figure.

1. Use a screwdriver to loosen the screws on the ejector lever of the PSU, and raise the ejectorlever.

2. Slide the new PSU along the guide rails into the subrack until it snaps shut, and lower theejector lever.

3. Tighten the screws on the ejector lever.




198

Step 4 Check the status of indicators on the new PSU to determine whether the new PSU is workingproperly. When the new PSU is working properly, the power indicator is steady green, and theprotection indicator and alarm indicator are steady off.


----End





9.7 Replacing a PSU (EPW30-48A)This section describes the procedure for replacing a PSU (EPW30-48A), which is shortened toPSU in this section.






Contextl The PSU is hot-swappable.

l Replacing a PSU takes about 3 minutes.

l The position of the PSU varies with the base station type. Table 9-2 describes the positionsof the PSU. Figure 9-25 shows the positions of the PSU.

Table 9-2 Positions of the PSU


BTS3900A (Ver.B) EPS 01A/01C in an APM30H(Ver.B)

l Components of an EPS 01l Components of an EPS4890

BTS3900 (Ver.B) EPS4890 in a BTS3900 (Ver.B)cabinet



199


DBS3900 EPS4890 in an IMB03EPS 01B/01D in an APM30H(Ver.B)


Procedure




200


Step 2 Remove the faulty PSU, as shown in the following figure.1. Use a screwdriver to loosen the screws on the ejector lever on the panel of the PSU.2. Gently pull the ejector lever to slide the PSU out of the subrack and remove the PSU from

the subrack.

Figure 9-26 Removing the PSU

Step 3 Install a new PSU, as shown in the following figure.1. Use a screwdriver to loosen the screws on the ejector lever of the PSU, and raise the ejector

lever.2. Slide the PSU along the guide rails into the subrack until it snaps shut, and lower the ejector

lever.3. Tighten the screws on the ejector lever.



201


Step 4 Check the status of indicators on the new PSU to determine whether the new PSU is workingproperly. When the new PSU is working properly, the power indicator is steady green, and theprotection indicator and alarm indicator are steady off.


----End






Prerequisitesl An ESD wrist strap or a pair of ESD gloves and an M6 screwdriver are available.




202

Context

l Replacing a DCDU interrupts all the services carried on the base station.

l Replacing a DCDU takes about 20 minutes.

l An OMB can only use the DCDU-03B. An IMB03 or 19-inch rack can use the DCDU-03B,DCDU-11B, or DCDU-12B.

l This section describes the procedure for replacing the DCDU-03B in an OMB. Theprocedures for replacing the DCDU-11B and DCDU-12B are the same.

l The following figure shows the positions of the DCDU in an OMB and the DCDU in anIMB03.


Procedure




203












204










205


Item Normal Status







----End





206

10 Replacing the Components in a 19-InchRack

About This Chapter

This chapter describes the procedure and precautions for replacing the components in a 19-inchrack.


DBS3900Site Maintenance Guide 10 Replacing the Components in a 19-Inch Rack


207


Prerequisitesl An ESD wrist strap or a pair of ESD gloves and an M6 screwdriver are available.l Associated personnel have gained permission to access the site and have obtained the

required keys.

Contextl Replacing a DCDU interrupts all the services carried on the base station.l Replacing a DCDU takes about 20 minutes.l An OMB can only use the DCDU-03B. An IMB03 or 19-inch rack can use the DCDU-03B,

DCDU-11B, or DCDU-12B.l This section describes the procedure for replacing the DCDU-03B in an OMB. The

procedures for replacing the DCDU-11B and DCDU-12B are the same.l The following figure shows the positions of the DCDU in an OMB and the DCDU in an

IMB03.



208


Procedure






209










210










211


Item Normal Status







----End





212

11 Replacing the Components in aTP48600A

For details about the procedure and precautions for replacing the components in the TP48600A,see TP48600A-H17B1 User Guide.

DBS3900Site Maintenance Guide 11 Replacing the Components in a TP48600A


213

12 Replacing Components in the IBC10

About This Chapter

This chapter describes the procedure and precautions for replacing components in an IBC10.

12.1 Replacing a DCDU-12CThis section describes the procedure for replacing a DCDU-12C (DCDU for short).

12.2 Replacing the ELUThis section describes the procedure and precautions for replacing an electronic label unit (ELU).

12.3 Replacing a Temperature Sensor at the Air Intake Vent of the BBUThis section describes the procedure and precautions for replacing a temperature sensor at theair intake vent of the BBU.

12.4 Replacing an FAU03D-02If an FAU03D-02 is faulty and cannot be repaired in time, replace it.

12.5 Replacing a FuseThis section describes the procedure and precautions for replacing a fuse.

DBS3900Site Maintenance Guide 12 Replacing Components in the IBC10


214

12.1 Replacing a DCDU-12CThis section describes the procedure for replacing a DCDU-12C (DCDU for short).


a Phillips screwdriver, a pair of diagonal pliers, and an ESD box or bag.l The type of the component to be replaced is confirmed according to Querying the Electronic

Label of the Cabinet, and a new component is available.l The new component is intact, and its hardware version is the same as that of the component

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

required keys.

Contextl Replacing a DCDU interrupts all the services carried by the RRUs that are powered by the

DCDU.l It takes about 20 minutes to replace a DCDU.l The following figure shows the position of the DCDU in an IBC10 DC cabinet.



215

Figure 12-1 Position of a DCDU

(1) DCDU-12C

Procedure




216


Step 2 Modify the administration state and block all RRUs that are powered by the DCDU to bereplaced. For details, see RRU Hardware Maintenance Guide.

Step 3 In an IBC10 DC cabinet, turn off the power switch on the external power equipment that providespower for the DCDU-12C. In an IBC10 AC cabinet, set the RFC1 and RFC0 circuit breakerson the EPU05A to OFF.

Step 4 Record the positions of DC output terminals or connectors on the DCDU. Then remove theterminals or connectors.

Step 5 Use a Phillips screwdriver to remove the protective cover for the DC input wiring terminal blockfrom the DCDU, as shown in the following figure.

Figure 12-2 Removing the protective cover for the DC input wiring terminal block from theDCDU

Step 6 Record the connection of the DC input power cables, and disconnect the power cables.

Step 7 Use a Phillips screwdriver to remove the two screws from each side of the DCDU, and gentlypull the DCDU out of the cabinet along the guide rails.

Step 8 Place the new DCDU on the installation position, and push it into the cabinet along the guiderails. Use two M6 captive screws on each side of the DCDU to secure the DCDU to 2 N·m (17.7lbf·in.).

Step 9 Remove the protective cover for the DC input wiring terminal block from the new DCDU,reconnect the power cables to the DC input wiring terminal block of the new DCDU accordingto the recorded positions, and then reinstall the protective cover.



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Step 10 Reinstall the power cable connectors removed in Step 4 to the DCDU.

Step 11 Turn on the external power switch for the DCDU that is turned off in Step 3.

Step 12 Check whether the DCDU is providing power properly by observing the indicator status on theBBU powered by the DCDU according to the following checklist.

Table 12-1 Checklist

Item Normal Status

If No.0 DCDU-12C is replaced, check theindicator status on the FMUEA in theFAU03D-02. For the indicator status, see FanAssembly (FAU03D-02).

l The RUN indicator is blinking green (onfor 0.125s and off for 0.125s or on for 1sand off for 1s).


l If No.1 DCDU-12C is replaced, check theindicator status on the upper BBUs.

l If No.2 DCDU-12C is replaced, check theindicator status on the lower BBUs.

l UPEU: The RUN indicator is steady on.l FAN: The STATE indicator is blinking

green (on for 1s and off for 1s).l The normal status of the indicators on the

BBU is as follows:RUN indicator: blinking green (on for 1sand off for 1s)ALM indicator: steady offACT indicator: steady on


----End





12.2 Replacing the ELUThis section describes the procedure and precautions for replacing an electronic label unit (ELU).


a flat-head screwdriver, a Phillips screwdriver, and an ESD box or bag.

l The type of the PSU to be replaced is confirmed according to Querying the Electronic Labelof the Cabinet, and a new PSU is available.



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Contextl It takes about 5 minutes to replace an ELU.l The following figure shows the position of the ELU in a cabinet.

Figure 12-3 Position of the ELU in a cabinet

(1) ELU



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Procedure



Step 2 Remove the faulty ELU.1. Remove the connector in the SENSOR port on the FAU03D-02 and put the connector on

the sensor through the cable hole at the rear of the cabinet to the front of the cabinet, asshown in the following figure.

Figure 12-4 Removing the connector from the temperature sensor on the FAU03D-02

2. Use a Phillips screwdriver to remove the four M6 screws from the air deflector and remove

the air deflector, as shown in the following figure.



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Figure 12-5 Removing the air deflector

3. Remove the RJ45 connector from the ELU.

4. Use a Phillips screwdriver to remove the two M4x8 screws on the ELU.

Figure 12-6 Removing a faulty ELU

Step 3 Install a new ELU.



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1. Place the new ELU on the installation position, and use two M4x8 screws to secure theELU to 1.2 N·m (3.10 lbf·in.).

2. Connect the RJ45 connector to the port on the ELU.3. Put the cable removed in Step 2.1 through the cable hole at the rear of the air deflector and

then put it through the cable hole at the rear of the cabinet.

NOTICEWhen routing a cable, prevent it from pressing any other cables.

4. Use a Phillips screwdriver to secure the four M6 screws removed from the air deflectoronto the cabinet to 4.8 N·m (42.48 lbf·in.).

5. Connect one end of the cable for the temperature sensor at the rear of the cabinet with anRJ45 connector to the SENSOR port on the FAU03D-02.


----End





12.3 Replacing a Temperature Sensor at the Air Intake Ventof the BBU

This section describes the procedure and precautions for replacing a temperature sensor at theair intake vent of the BBU.


a flat-head screwdriver, a Phillips screwdriver, and an ESD box or bag.

l The type of the PSU to be replaced is confirmed according to Querying the Electronic Labelof the Cabinet, and a new PSU is available.



Contextl It takes about 5 minutes to replace a temperature sensor at the air intake vent of the BBU.

l The following figure shows the position of the sensor at the air intake vent of the BBU.



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Figure 12-7 Position of the temperature sensor at the air intake vent of the BBU in a cabinet

(1) Temperature sensor at the air intake vent of the BBU

Procedure




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Step 2 Remove the temperature sensor at the air intake vent of the BBU.1. Remove the connector in the SENSOR port on the FAU03D-02 and put the connector on

the sensor through the cable hole at the rear of the cabinet to the front of the cabinet, asshown in the following figure.

Figure 12-8 Removing the connector from the temperature sensor on the FAU03D-02

2. Use a Phillips screwdriver to remove the four M6 screws from the air deflector and remove

the air deflector, as shown in the following figure.

Figure 12-9 Removing the air deflector



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3. Remove the RJ45 connector and 4-pin connector for the temperature sensor at the air intake

vent of the BBU.4. Use a Phillips screwdriver to remove the two M4x8 screws on the temperature sensor at

the air intake vent of the BBU.

Figure 12-10 Removing the temperature sensor at the air intake vent of the BBU

Step 3 Install a new temperature sensor at the air intake vent of the BBU.1. Place the new temperature sensor on the installation position, and use two M4x8 screws to

secure the temperature sensor to 1.2 N·m (3.10 lbf·in.).2. Insert the RJ45 connector and 4-pin connector into the port on the temperature sensor at

the air intake vent of the BBU.3. Put the cable removed in Step 2.1 through the cable hole at the rear of the air deflector and

then put it through the cable hole at the rear of the cabinet.

NOTICEWhen routing a cable, prevent it from pressing any other cables.

4. Place the air deflector into its original position and use a Phillips screwdriver to tighten thefour M6 screws on the air deflector to 4.8 N·m (42.48 lbf·in.).

5. Reconnect the end of the cable for the temperature sensor at the rear of the cabinet with anRJ45 connector to the SENSOR port on the FAU03D-02.



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----End



12.4 Replacing an FAU03D-02If an FAU03D-02 is faulty and cannot be repaired in time, replace it.


a flat-head screwdriver, a Phillips screwdriver, and an ESD box or bag.l The type of the PSU to be replaced is confirmed according to Querying the Electronic Label

of the Cabinet, and a new PSU is available.l Associated personnel have gained permission to access the site and have obtained the

required keys.l The new component is intact, and its hardware version is the same as that of the component

to be replaced.

Contextl It takes about 5 minutes to replace an FAU03D-02.l The following figure shows the position of the FAU03D-02 in a cabinet.



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Figure 12-11 Position of the FAU03D-02 in a cabinet

(1) FAU03D-02

Procedure




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Step 2 Record the positions to which cables for the FAU03D-02 are connected and remove the cableconnectors from the FAU03D-02.

Step 3 Use a Phillips screwdriver to loosen the four M6 screws on the FAU03D-02 and pull out thefaulty FAU03D-02, as shown in the following figure.

Figure 12-12 Removing the FAU03D-02

Step 4 Install the new FAU03D-02, as shown in the following figure.1. Use both hands to hold the FAU03D-02, keeping the side with the FAU03D-02 silkscreen

outwards and the port of the cable leftwards, and place the bottom of the FAU03D-02 onthe bent edge of the installation plate.

2. Use a torque screwdriver to tighten the four captive screws on the installation plate of theFAU03D-02 to 2 N·m (17.7 lbf·in.).



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Figure 12-13 Installing the new FAU03D-02

Step 5 Connect the power cable and monitoring cable for the FAU03D-02 to the corresponding ports.

Step 6 Check the status of the indicators to determine whether the FAU03D-02 is working properly.For details about the status of the indicators, see Fan Assembly (FAU03D-02).


----End





12.5 Replacing a FuseThis section describes the procedure and precautions for replacing a fuse.

Prerequisitesl Required tools and materials are available, including an ESD wrist strap or a pair of ESD

gloves, and an ESD box or bag.

l The quantities and types of fuses to be replaced are confirmed, and the require fuses areavailable.



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Context

NOTICEl Replacing a fuse on the power input port for the BBU interrupts all services carried by the

base station.l Replacing a fuse interrupts all services carried by the corresponding module.l The current derating proportion of the fuse varies with the ambient temperature. At

temperatures of 25°C (77ºF), the current of a fuse must be equal to or lower than 75% of therated current.

l The fuse can be replaced only with a spare part provided by Huawei.

l When the indicator on the fuse base is steady on, the fuse is faulty and must be replaced.l The fuse is hot-swappable.l The position of the fuse varies with the type of the IBC10 cabinet. Table 1 describes the

positions of the fuse. Figure 1 shows the positions of the fuse.

Table 12-2 Position of the fuse

Cabinet Type Installation Position Legend

IBC10 DC DCDU-12C in the IBC10 DCcabinet

Figure 12-14 shows theinstallation positions of thefuse and spare fuse box.

Figure 12-14 Positions of the fuse and spare fuse box in the DCDU-12C

(1) Fuses (2) Spare fuse box



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Procedure



Step 2 Turn off the power switch for the component whose power supply is controlled by the fuse tobe replaced. If there is no power switch, you can disconnect the power cable connected to thecomponent.

Step 3 Take out a new fuse from the spare fuse box and check that the current of the fuse meets therequirement, as shown in the following figure.

NOTE

The spare fuse box provides five 5 A fuses and three 30 A fuses.

Figure 12-15 Taking out a new fuse

(1) Fuses

Step 4 Replace the fuse.1. Pivot the ejector lever under the fuse terminal outwards, remove the fuse base, and remove

the fuse from the base, as shown in the following figure.



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Figure 12-16 Removing a faulty fuse

2. Insert the new fuse into the fuse base, insert the fuse base into the fuse terminal, and ensure

that the fuse base is installed securely, as shown in the following figure.

Figure 12-17 Replacing a fuse

Step 5 Turn on the power switch turned off in Step 2 and checking whether the indicator on the fuseterminal block is off. Then determine whether the new fuse works properly according to thestatus of the corresponding component.


----End





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13 Replacing an RRU

For details about how to replace an RRU, see RRU Hardware Maintenance Guide.

DBS3900Site Maintenance Guide 13 Replacing an RRU


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Documents

DBS3900 Site Maintenance Guide(V100R009C00_Draft C)(PDF)-En