bbu3900 hardware maintenance guide(09)(pdf)-en

BBU3900

Hardware Maintenance Guide

Issue 09Date 2013-11-28

HUAWEI TECHNOLOGIES CO., LTD.

Copyright Huawei Technologies Co., Ltd. 2013. 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.comEmail: [email protected]

Issue 09 (2013-11-28) Huawei Proprietary and ConfidentialCopyright Huawei Technologies Co., Ltd.

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About This Document

PurposeThis document describes the routine hardware maintenance of the BBU3900. The maintenancetasks consist of power supply and grounding system maintenance, cabinet maintenance, andpower-on and power-off operations. This document also describes the procedures for replacingthe components.

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

Product Name Product VersionDBS3900 V100R007C00DBS3900 GSM V100R014C00DBS3900 WCDMA V200R014C00DBS3900 LTE V100R005C00DBS3900 LTE TDD V100R005C00

Intended AudienceThis document is intended for:l Field engineersl System engineers

Organization1 Changes in BBU3900 Hardware Maintenance GuideThis chapter describes the changes in the BBU3900 Hardware Maintenance Guide.

BBU3900Hardware Maintenance Guide About This Document


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2 Maintenance Items for BBU3900 HardwareMaintenance items for BBU3900 hardware include checking the following items: fans, theventilation of the BBU, the exterior and cleanness of hardware, indicators, and the ambienttemperature in the cabinet.3 Powering On and Powering Off the BBU3900This chapter describes how to power on and power off the BBU3900. After power-on, you needto check the status of the indicators on the BBU3900. The power-off procedure for an emergencyis different from for a normal situation. You need to determine whether to perform a normalpower-off or emergent power-off based on the situation.4 Risky Hardware OperationsThe 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 BBU3900 CasesAs the core of a base station, a BBU3900 processes the baseband signals of the entire base stationand communicates with the RNC/BSC and RFU/RRU. Replacing a BBU3900 interrupts servicescarried by the base station.6 Replacing the Components in the OMBThis chapter describes how to replace the components in the OMB, including the HEUA, AC/DC power equipment, DCDU-03B, and AC surge protection box.7 Replacing the Components in the IMB03This chapter describes how to replace the components in the IMB03, including the AC/DC powerequipment and DCDU-03B.8 Replacing the Components in the BBU3900This chapter describes how to replace the components in the BBU3900 during the maintenance,including the BBU3900 case, BBU3900 boards and modules, and optical modules.9 Adding Components in the BBU3900This chapter describes how to add new boards in the BBU during the maintenance.10 Replacing SLPU ComponentsDuring the SLPU maintenance, the SLPU components, such as UELP, and UFLP, can bereplaced as required

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



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Symbol DescriptionIndicates 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 ConventionsThe general conventions that may be found in this document are defined as follows.

Convention DescriptionTimes New Roman Normal paragraphs are in Times New Roman.Boldface Names of files, directories, folders, and users are in

boldface. For example, log in as user root.Italic Book titles are in italics.Courier New Examples of information displayed on the screen are in

Courier New.

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

Convention DescriptionBoldface The keywords of a command line are in boldface.Italic Command arguments are in italics.



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Convention Description[ ] Items (keywords or arguments) in brackets [ ] are optional.{ x | y | ... } Optional items are grouped in braces and separated by

vertical bars. One item is selected.[ x | y | ... ] Optional items are grouped in brackets and separated by

vertical bars. One item is selected or no item is selected.{ x | y | ... }* Optional items are grouped in braces and separated by

vertical bars. A minimum of one item or a maximum of 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 ConventionsThe GUI conventions that may be found in this document are defined as follows.

Convention DescriptionBoldface Buttons, menus, parameters, tabs, window, and dialog titles

are in boldface. For example, click OK.> Multi-level menus are in boldface and separated by the ">"

signs. For example, choose File > Create > Folder.

Keyboard OperationsThe keyboard operations that may be found in this document are defined as follows.

Format DescriptionKey Press the key. For example, press Enter and press Tab.Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt

+A means the three keys should be pressed concurrently.Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A means

the two keys should be pressed in turn.

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



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Action DescriptionClick Select and release the primary mouse button without moving

the pointer.Double-click Press the primary mouse button twice continuously and

quickly without moving the pointer.Drag Press and hold the primary mouse button and move the

pointer to a certain position.



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Contents

About This Document.....................................................................................................................ii1 Changes in BBU3900 Hardware Maintenance Guide.............................................................12 Maintenance Items for BBU3900 Hardware.............................................................................53 Powering On and Powering Off the BBU3900.........................................................................73.1 Powering On the BBU3900............................................................................................................................................83.2 Powering Off the BBU3900...........................................................................................................................................94 Risky Hardware Operations......................................................................................................105 Replacing BBU3900 Cases..........................................................................................................136 Replacing the Components in the OMB.................................................................................166.1 Replacing the HEUA....................................................................................................................................................176.2 Replacing the AC/DC Power Equipment.....................................................................................................................196.3 Replacing the DCDU-03B............................................................................................................................................246.4 Replacing the AC Surge Protection Box......................................................................................................................267 Replacing the Components in the IMB03...............................................................................307.1 Replacing the AC/DC Power Equipment.....................................................................................................................317.2 Replacing the DCDU-03B............................................................................................................................................368 Replacing the Components in the BBU3900...........................................................................398.1 Querying the Electronic Label for a Board...................................................................................................................418.2 Replacing the UMPTa1/UMPTb1................................................................................................................................418.3 Replacing the WMPT...................................................................................................................................................448.4 Replacing the GTMU...................................................................................................................................................478.5 Replacing the UMPTa2/UMPTa6................................................................................................................................528.6 Replacing the LMPT....................................................................................................................................................598.7 Replacing the WBBP....................................................................................................................................................678.8 Replacing the LBBP.....................................................................................................................................................708.9 Replacing a UPEU........................................................................................................................................................738.10 Replacing the UEIU....................................................................................................................................................768.11 Replacing the FAN Unit.............................................................................................................................................788.12 Replacing a UTRP......................................................................................................................................................81

BBU3900Hardware Maintenance Guide Contents


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8.13 Replacing the USCU..................................................................................................................................................848.14 Replacing a UBRI.......................................................................................................................................................878.15 Replacing the UCIU...................................................................................................................................................908.16 Replacing the Optical Module....................................................................................................................................939 Adding Components in the BBU3900......................................................................................979.1 Adding a UPEU..........................................................................................................................................................1009.1.1 Adding a UPEUc.....................................................................................................................................................1009.1.2 Replacing a UEIU with a UPEUc............................................................................................................................1029.1.3 Replacing One UPEUa Board with Two UPEUc Boards.......................................................................................1049.1.4 Replacing a UEIU and a UPEUa with Two UPEUc Boards...................................................................................1079.1.5 Replacing Two UPEUa Boards with Two UPEUc Boards.....................................................................................1119.2 Adding a WBBP.........................................................................................................................................................1159.3 Adding a LBBP..........................................................................................................................................................1169.4 Adding a UTRP..........................................................................................................................................................11810 Replacing SLPU Components...............................................................................................12010.1 Replacing a UELP....................................................................................................................................................12110.2 Replacing the UFLP.................................................................................................................................................123

BBU3900Hardware Maintenance Guide Contents


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1 Changes in BBU3900 Hardware MaintenanceGuide

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

09 (2013-11-28)This is the ninth commercial issue.Compared with the issues for the 08 (2013-05-27), no information is changed.Compared with the issues for the 08 (2013-05-27), this issue incorporates the following changes:

Topic Change Description8.3 Replacing the WMPT Added the steps of changing the VLAN mode

from the VLAN group to the single VLAN.

08 (2013-05-27)This is the eighth commercial issue.Compared with the issues for the 07 (2012-12-30), this issue is added with the following topic:l 4 Risky Hardware OperationsCompared with the issues for the 07 (2012-12-30), this issue does not change or delete anyinformation.

07 (2012-12-30)This is the seventh commercial issue.Compared with the issues for the 06 (2012-11-08), no information is added.Compared with the issues for the 06 (2012-11-08), this issue incorporates the following changes:

BBU3900Hardware Maintenance Guide 1 Changes in BBU3900 Hardware Maintenance Guide


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Topic Change Description5 Replacing BBU3900 Cases Added the steps of modifying the ESN of the

BBU.8 Replacing the Components in theBBU3900 and it's child topics

Added the precautions for removing andinstalling boards.

9 Adding Components in the BBU3900 andit's child topics

Compared with the issues for the 06 (2012-11-08), this issue deletes no contents.

06 (2012-11-08)This is the sixth commercial issue.Compared with the issues for the 05 (2012-09-15), this issue is added with the following topic:l 9.3 Adding a LBBPCompared with the issues for the 05 (2012-09-15), this issue incorporates the following changes:

Topic Change Description5 Replacing BBU3900 Cases Added the steps of modifying the ESN of the

BBU.


05 (2012-09-15)This is the fifth commercial issue.Compared with the issues for the 04 (2012-08-05), this issue is added with the following topic:l Replacing the Components in the OMB(Ver.C)Compared with the issues for the 04 (2012-08-05), no information is changed.Compared with the issues for the 04 (2012-08-05), this issue deletes no contents.

04 (2012-08-05)This is the fourth commercial issue.Compared with the issues for the 03 (2012-06-20), this issue is added with the following topic:l 9.1.3 Replacing One UPEUa Board with Two UPEUc BoardsCompared with the issues for the 03 (2012-06-20), this issue incorporates the following changes:



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Topic Change Description8.5 Replacing the UMPTa2/UMPTa6 Changed the steps of backing up the

configuration file and license.8.6 Replacing the LMPT


03 (2012-06-20)This is the third commercial issue.Compared with the issues for the 02 (2012-04-25), no information is added.Compared with the issues for the 02 (2012-04-25), this issue incorporates the following changes:

Topic Change Description8.4 Replacing the GTMU Changed the steps of blocking all cells of the

BTS.5 Replacing BBU3900 Cases8.9 Replacing a UPEU


02 (2012-04-25)This is the second commercial issue.Compared with the issues for the 01 (2012-03-20), no information is added.Compared with the issues for the 01 (2012-03-20), this issue incorporates the following changes:

Topic Change Description8.3 Replacing the WMPT l Add the steps by using a USB flash drive

l Add the steps of checking for alarms in theprerequisites

l Add the steps of backing up theconfiguration file in the prerequisites

8.2 Replacing the UMPTa1/UMPTb18.4 Replacing the GTMU

8.7 Replacing the WBBP l Add the steps of checking for alarms in theprerequisites

l Add the time estimation for how long needthe board to come up

8.8 Replacing the LBBP

8.16 Replacing the Optical Module Add the steps of confirming the type of afaulty board.



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01 (2012-03-20)This is the first commercial issue.Compared with the issues for the Draft A (2012-02-10), no information is added.Compared with the issues for the Draft A (2012-02-10), this issue incorporates the followingchanges:

Topic Change Description8.6 Replacing the LMPT8.5 Replacing the UMPTa2/UMPTa6

Some descriptions are optimized.

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

Draft A (2012-02-10)This is the draft version.Compared with issue MBTS V100R004C00, WCDMA-NodeB V200R013C00, and GSM-BTSV100R013C00, this issue is added with the following topic:l 9.4 Adding a UTRPl 8.15 Replacing the UCIUl 8.2 Replacing the UMPTa1/UMPTb1l 7 Replacing the Components in the IMB03Compared with issue MBTS V100R004C00, WCDMA-NodeB V200R013C00, and GSM-BTSV100R013C00, no information is changed.Compared with issue MBTS V100R004C00, WCDMA-NodeB V200R013C00, and GSM-BTSV100R013C00, this issue deleted the following new topics:l Replacing the SLPU



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2 Maintenance Items for BBU3900 HardwareMaintenance items for BBU3900 hardware include checking the following items: fans, theventilation of the BBU, the exterior and cleanness of hardware, indicators, and the ambienttemperature in the cabinet.Table 2-1 describes the maintenance items for BBU3900 hardware.

Table 2-1 Maintenance items for BBU3900 hardwareItem Checking

FrequencyOperation Guide Reference Standard

Fans Weekly,monthly, orquarterly

Check fans. There is no fan-relatedalarm.

Check theventilation ofthe BBU.

Quarterly Check the air intakevents and air exhaustvents of the BBU and ofthe rack 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.

Check thehardwareexterior.

Monthly orquarterly

Check whether thehardware surface isdamaged and whetherthe label on the cabinet islegible.

The hardware surface is notdamaged and the label on thecabinet is legible.

Check thehardwarecleanness.

Monthly orquarterly

Check whether thehardware is clean.

The hardware surface isclean, and the inside ofcabinet is not dusty.

Checkindicators.

Monthly orquarterly

Check whetherindicators on thehardware are normal.

There is no indicator-relatedalarm.

BBU3900Hardware Maintenance Guide 2 Maintenance Items for BBU3900 Hardware


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Item CheckingFrequency

Operation Guide Reference Standard

Check theambienttemperature ofthe cabinet.

Monthly orquarterly

Check whether thetemperature in thecabinet is normal.

The ambient temperature inthe BBU3900 must rangefrom -20oC to +55oC.

NOTEThe maintenance period depends on onsite conditions.

BBU3900Hardware Maintenance Guide 2 Maintenance Items for BBU3900 Hardware


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3 Powering On and Powering Off the BBU3900About This Chapter

This chapter describes how to power on and power off the BBU3900. After power-on, you needto check the status of the indicators on the BBU3900. The power-off procedure for an emergencyis different from for a normal situation. You need to determine whether to perform a normalpower-off or emergent power-off based on the situation.

3.1 Powering On the BBU3900After setting the power switch of the BBU3900 to ON, you need to check the running status ofthe BBU3900 by observing the status of indicators.3.2 Powering Off the BBU3900This section describes how to power off the BBU3900 in a normal situation and in an emergency.

BBU3900Hardware Maintenance Guide 3 Powering On and Powering Off the BBU3900


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3.1 Powering On the BBU3900After setting the power switch of the BBU3900 to ON, you need to check the running status ofthe BBU3900 by observing the status of indicators.

PrerequisitesThe input voltage stays within a proper range.l If the BBU3900 uses +24 V DC power, the input voltage should range from +21.6 V DC

to +29 V DC.l If the BBU3900 uses -48 V DC power, the input voltage should range from -38.4 V DC to

-57 V DC.

ProcedureStep 1 Set the power switch of the BBU3900 to 1.Step 2 Check the status of indicators on the panel of each board in the BBU3900, and determine whether

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

Table 3-1 Indication of normal power supply to the componentsComponent Normal Power Supply StatusMain control board l The RUN indicator is steady on.

l The ALM indicator is steady off.l The ACT indicator is steady on.

Baseband processing boardUTRPUSCUFAN The STATE indicator is blinking green (on

for 1s and off for 1s).UPEU The RUN indicator is steady on.

If the status of indicators is abnormal, perform the following operations:l Reset the board.l Remove the board and check whether there are damaged pins. If so, replace the board. If no,

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

Step 3 When the board becomes functional, the indicators enter the normal status. Perform the nextstep based on the status of the indicators.



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If... Then...Main control board l The RUN indicator is on

for 1s and off for 1s,l The ALM indicator is

steady off,

The BBU3900 is functioningproperly. End the task.Baseband processing board

UTRPUSCUFAN The STATE indicator is

blinking green (on for 1s andoff for 1s).

UPEU The RUN indicator is steadyon.

The indicators are in other status. The BBU3900 is faulty.Clear the fault, and then go toStep 1.

----End

3.2 Powering Off the BBU3900This section describes how to power off the BBU3900 in a normal situation and in an emergency.

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

If... Then...The BBU3900 needs to be powered off inscenarios such as a planned equipment swapor foreseeable regional blackout,

You need to perform a normal power-off byreferring to Step 2.

The BBU3900 needs to be powered off inemergent scenarios such as a fire, smoke, orwater damage,

You need to perform an emergent power-offby referring toStep 3.

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

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

switch for the BBU3900 if time permits.----End



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4 Risky Hardware OperationsThe 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 operationsHardwareOperation

Impact

8.2Replacing theUMPTa1/UMPTb1

l If a multi-mode base station supports co-transmission and the shared ports forco-transmission are on the UMPT, replacing the UMPT interrupts the servicesof the peer mode. Typical scenario: The GU dual-mode base station supportsco-transmission over IP through the Ethernet link on the UMPT. The GSM datais transmitted through the FE ports interconnecting the UMPT and GTMUpanels.

l For a multi-mode base station in dual-star topology, when the UMPT isremoved and inserted again, the rate of GSM or LTE data services maydecrease. However, voice services will not be affected.

8.3Replacing theWMPT

l If a multi-mode base station supports co-transmission and the shared ports forco-transmission are on the WMPT, replacing the WMPT interrupts the servicesof the peer mode. Typical scenario: The GU dual-mode base station supportsco-transmission over IP through the Ethernet link on the WMPT. The GSMdata is transmitted through the FE ports interconnecting the WMPT and GTMUpanels.

l For a multi-mode base station in dual-star topology, when the WMPT isremoved and inserted again, the rate of GSM or LTE data services maydecrease. However, voice services will not be affected.

BBU3900Hardware Maintenance Guide 4 Risky Hardware Operations


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HardwareOperation

Impact

8.4Replacing theGTMU

l If a multi-mode base station supports co-transmission and the shared port forco-transmission is located GTMU, replacing the GTMU interrupts services ofthe peer mode. Typical scenario: The GU dual-mode base station supports co-transmission over TDM through the E1/T1 ports on the GTMU. The UMTSdata is transmitted through the backplane in the manner of TDM over Packet(ToP).

l For a multi-mode base station in dual-star topology, when the GTMU is resetabnormally or removed and inserted again, UMTS or LTE data or voiceservices may be interrupted.

8.5Replacing theUMPTa2/UMPTa6

l For a multi-mode base station in dual-star topology, when the UMPT isremoved and inserted again, the rate of GSM or UMTS data services maydecrease. However, voice services will not be affected.

8.6Replacing theLMPT

l For a multi-mode base station in dual-star topology, when the LMPT isremoved and inserted again, the rate of GSM or UMTS data services maydecrease. However, voice services will not be affected.

8.7Replacing theWBBP

l When the WBBPf serving as the converging party in CPRI MUX topology isreset abnormally or removed and inserted again, data and voice services of theconverged party will also be interrupted.

8.8Replacing theLBBP

l When the LBBPd serving as the converged party in CPRI MUX topology isreset abnormally or removed and inserted again, the data service rate of theconverging party will decrease. However, voice services will not be affected.When the LBBPd serving as the converging party in CPRI MUX topology isreset abnormally or removed and inserted again, data and voice services of theconverged party will also be interrupted.

8.9Replacing aUPEU

l If the only one UPEU in the base station is faulty, replacing the UPEU interruptspower supply to a BBU and accordingly interrupts services carried by the BBU.

l If one of the two UPEUs in the base station is faulty, replacing the UPEU maycause a failure to monitor the external equipment.

8.10Replacing theUEIU

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



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HardwareOperation

Impact

8.12Replacing aUTRP

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

8.15Replacing theUCIU

l If the UCIU is faulty or is replaced, services carried by radio frequency (RF)modules in GU or GL mode are affected. In this situation, services of one modeare restored automatically. Services of the other mode can be restored only afterthe fault is rectified or the UCIU is reset.

8.16Replacing theOpticalModule

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

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 BBU3900 CasesAs the core of a base station, a BBU3900 processes the baseband signals of the entire base stationand communicates with the RNC/BSC and RFU/RRU. Replacing a BBU3900 interrupts servicescarried by the base station.

Prerequisitesl Query alarms reported by the base station. For details, see Browsing the Current Alarm.l The following tools and materials are available: an ESD wrist strap or ESD gloves and an

M6 screwdriver.l The type and quantity of BBU cases to be replaced are confirmed. New BBU cases are

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

is available for a GBTS using a static IP address. For details about the hardwarerequirements for the computer, see the GSM SMT User Guide.

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

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

BBU case:NOTE

In a multi-mode base station, block the cells of each mode respectively.1. On the NodeB, run the BLK LOCELL command to block all cells working in UMTS

mode. Modify the ESN on the RNC to the same as the ESN on the new BBU case. Fordetails, see Creating NodeB Commissioning Tasks.

2. On the eNodeB, run the BLK CELL command to block all cells working in LTE mode.Modify the ESN in the DHCP management interface to the same as the new BBU case. Fordetails, see Creating an eNodeB Commissioning Task.

3. On the BSC, run the LST GCELL command to query the administrative state of all cellsunder the BTS, and run the SET GCELLADMSTAT command with ADMSTAT set toLOCK to block all cells under the BTS. Then change the ESN on the BSC to the same asthe ESN on the new BBU by running one of the following MML commands:

BBU3900Hardware Maintenance Guide 5 Replacing BBU3900 Cases


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l When the base station uses TDM transmission, run the LST BTSOMLDETECTcommand to query the status of the OML timeslot automatic detection function. If theswitch for this function is turned off, you do not need to modify the ESN. If the switchis turned on, run the SET BTSOMLDETECT command to modify the ESN on theBSC.

l If the BTS uses IP transmission, run the MOD BTSESN command to change the ESNon the BSC.

Step 2 Power off the BBU. For details, see 3.2 Powering Off the BBU3900.Step 3 Put on an ESD wrist strap or ESD gloves.

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

Step 4 Record all cable connections on the panels of the boards in the BBU case to be replaced.Step 5 Disconnect the power cables, transmission cables, common public radio interface (CPRI) cables,

and alarm cables from the panels of the boards in the BBU case.Step 6 Loosen the four M6 screws on the BBU case, and remove the BBU case, as shown in Figure

5-1.

Figure 5-1 Removing a BBU case

Step 7 Remove all the boards in the faulty BBU case, install them in the corresponding slots of the newBBU case, and install filler panels in the vacant slots.

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

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

Step 10 Power on the BBU. For details, see 3.1 Powering On the BBU3900.Step 11 Check the status of the new BBU case by observing the status of indicators on the boards in the

BBU. For details about the status of the indicators, see the related hardware description.Step 12 If a GBTS uses a static IP address, perform the following operations:

1. Connect the computer on which the SMT application is installed to the ETH port on theGTMU, as shown in Figure 5-2.



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Figure 5-2 Connecting the GTMU

2. Log in to the SMT, and configure the static IP data according to the instructions in the GSMSMT User Guide.

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

Step 13 On the M2000, perform the following operations:NOTE

Alarms reported by a GSM+UMTS (GU), GSM+LTE (GL), UMTS+LTE (UL), or GSM+UMTS+LTE(GUL) base station can be checked and cleared on the M2000. For example, alarms reported by a GU basestation can be checked and cleared on the M2000.

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

2. On the eNodeB, run the UBL CELL command to unblock all cells working in LTE mode.3. On the BSC, run the SET GCELLADMSTAT command and set ADMSTAT to

UNLOCK to unblock all cells of the BTS.4. Check whether any new alarms are generated by the base station according to the

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

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

6. Check whether any new alarms are generated by the base station according to theinstructions in Browsing the Current Alarm. Then handle all eNodeB alarms according tothe instructions in Browsing Active Alarms or Events.

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

Step 14 Take off the ESD wrist strap or ESD gloves, and pack up all the tools.----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 into the packing box of the new component.l Fill in the fault form with detailed information about the replaced component.l Contact the local Huawei office to handle the faulty component.



15

6 Replacing the Components in the OMBAbout This Chapter

This chapter describes how to replace the components in the OMB, including the HEUA, AC/DC power equipment, DCDU-03B, and AC surge protection box.6.1 Replacing the HEUAThe Heat Exchange Unit type A (HEUA) provides power for the fan assembly, monitors thestatus of the fan assembly, collects the cabinet environment monitoring information and powersurge protection alarm information, and reports the collected information to the BBU.6.2 Replacing the AC/DC Power EquipmentThe AC/DC power equipment is used in an AC cabinet, converting external 220 V AC inputpower into -48 V DC power.6.3 Replacing the DCDU-03BThe DCDU-03B distributes DC power to different components. Replacing the DCDU-03Bdisrupts the power supply to the entire base station and all services carried by the base station.6.4 Replacing the AC Surge Protection BoxThe AC surge protection box provides surge protection for the input AC power.

BBU3900Hardware Maintenance Guide 6 Replacing the Components in the OMB


16

6.1 Replacing the HEUAThe Heat Exchange Unit type A (HEUA) provides power for the fan assembly, monitors thestatus of the fan assembly, collects the cabinet environment monitoring information and powersurge protection alarm information, and reports the collected information to the BBU.

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

screwdriver.l The quantity and type of board to be replaced are confirmed, and the new board is ready.l Associated personnel have gained permissions to access the site and have obtained the

required keys.

ContextFigure 6-1 shows the position of the HEUA in the OMB.

Figure 6-1 Position of the HEUA

HEUA

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



17

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

Step 2 Set circuit breaker SW7 on the DCDU-03B to OFF.Step 3 Record all the cable connections on the panel of the module to be replaced.Step 4 Disconnect the power cable and monitoring cable from the HUEA, as shown in Figure 6-2.

Figure 6-2 Disconnecting the cables

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

four M3 screws from the HEUA and then remove the HEUA, as shown in Figure 6-3.

Figure 6-3 Removing the HEUA

Step 6 Install the new board, tighten the screws on the board to 0.55 Nm (4.87 lbfin.), then install the

cover plate, tighten the screws on the cover plate until the tightening torque reaches 0.55 Nm(4.87 lbfin.), and then reconnect the cables.

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

Follow-up Procedurel Place the replaced component into the ESD box or bag. Then, place the ESD box or bag

into a foam-padded carton or the packing box of the new component.l Fill in the fault form with detailed information about the replaced component.l Contact the local Huawei office to handle the faulty component.



18

6.2 Replacing the AC/DC Power EquipmentThe AC/DC power equipment is used in an AC cabinet, converting external 220 V AC inputpower into -48 V DC power.

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

Phillips screwdriver, and M6 Phillips screwdriver.l The quantities and types of modules to be replaced are confirmed, and the new modules

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

required keys.

Contextl Figure 6-4 shows the position of the AC/DC power equipment in the cabinet.

Figure 6-4 Position of the AC/DC power equipment in the cabinet

1

(1) AC/DC power equipment

l Figure 6-5 shows the positions of the components in the AC/DC power equipment.

Figure 6-5 Positions of the components in the AC/DC power equipment

(1) Power distribution unit(PDU)

(2) Power supply unit(PSU)

(3) Power monitoring unit(PMU)

(4) Subrack



19

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

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

NOTE

l If you have confirmed that the subrack is faulty and needs to be replaced, you need to removethe PDU, PSUs, and PMU before removing the subrack from the cabinet.

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

l Replacing the AC/DC power equipment, PSU, PMU, PDU, or subrack interrupts all theservices carried by the base station. Therefore, the AC/DC power equipment or itscomponents must be replaced in 20 minutes.

ProcedureStep 1 Power off the AC/DC power equipment.Step 2 Put on an ESD wrist strap or ESD gloves.

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

Step 3 Record all cable connections on the panel of the component to be replaced.Step 4 Remove the component to be replaced.

l Remove the entire AC/DC power equipment.1. Remove all cables from the AC/DC power equipment.2. Loosen the four M6 screws on the mounting ears of the AC/DC power equipment, and

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



20

Figure 6-6 Removing the AC/DC power equipment

l Remove the PDU.1. Remove the DC output power cable from the PDU, as shown in Figure 6-7.

Figure 6-7 Removing the cable from the PDU

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

6-8.



21

Figure 6-8 Removing the PDU

l Remove the PSU.Loosen the M3 screw from the PSU panel, and remove the PSU, as shown in Figure 6-9.

Figure 6-9 Removing the PSU

l Remove the PMU.1. Remove the monitoring signal cable from the PMU, as shown in Figure 6-10.

Figure 6-10 Removing the cable from the PMU

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

6-11.



22

Figure 6-11 Removing the PMU

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

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

l Remove the subrack.1. Remove all cables from the AC/DC power equipment.2. Remove the PDU, PSU, and PMU from the subrack.3. Loosen the four M6 screws on the mounting ears of the subrack, and then remove the

subrack, as shown in Figure 6-12.

Figure 6-12 Removing the subrack



23

Step 5 Install the new component.

l Install the new AC/DC power equipment, tighten the screws on the mounting ears to 2 Nm(17.70 lbfin.), and then reconnect related cables.

l Install the new PDU, tighten the screw on the panel to 0.55 Nm (4.87 lbfin.), and thenreconnect related cables.

l Install the new PSU and tighten the screw on the panel to 0.55 Nm (4.87 lbfin.).l Install the new PMU, and tighten the screw on the panel to 0.55 Nm (4.87 lbfin.), and then

reconnect related cables.l Install the new subrack, tighten the screws on the mounting ears to 2 Nm (17.70 lbfin.),

install the PDU, PSU, and PMU in sequence, and then reconnect related cables.Step 6 Power on the AC/DC power equipment.Step 7 Check whether the AC/DC power equipment works properly according to the status of the

indicators on the AC/DC power equipment, BBU, and RRU.NOTE

For details about the indicators on the AC/DC power equipment, BBU, and RRU, see the correspondinghardware description document.




6.3 Replacing the DCDU-03BThe DCDU-03B distributes DC power to different components. Replacing the DCDU-03Bdisrupts the power supply to the entire base station and all services carried by the base station.


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

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

required keys.

Contextl Figure 6-13 shows the position of the DCDU-03B in the OMB.



24

Figure 6-13 Position of the DCDU-03B

DCDU

l Replacing the DCDU-03B disrupts all the services carried by the base station. Therefore,

the replacement should be complete within 20 minutes.

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


Step 3 Record all the cable connections on the panel of the module to be replaced.Step 4 Disconnect the power cables from the DCDU-03B, as shown in Figure 6-14.




25

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

6-15.

Figure 6-15 Removing the DCDU-03B

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

reaches 2 Nm (17.70 lbfin.), and reconnect the cables.Step 7 Power on the DCDU-03B.Step 8 Take off the ESD wrist strap or ESD gloves, and pack up all tools.

----End



6.4 Replacing the AC Surge Protection BoxThe AC surge protection box provides surge protection for the input AC power.



26


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

new AC surge protection box is ready.l Associated personnel have gained permissions to access the site and have obtained the

required keys.

Contextl Figure 6-16 shows the position of the AC surge protection box in the OMB.

Figure 6-16 Position of the AC surge protection box

(1) AC surge protection box

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

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

ProcedureStep 1 Power off the base station.Step 2 Put on an ESD wrist strap or ESD gloves.


Step 3 Record all the cable connections on the panel of the faulty AC surge protection box.Step 4 Disconnect the monitoring cable and power cable from the AC surge protection box, as shown

in Figure 6-17.



27


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

protection box, as shown in Figure 6-18.

Figure 6-18 Removing the AC surge protection box

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

reaches 1.2 Nm (10.62 lbfin.), and then reconnect the cables.Step 7 Power on the base station.Step 8 Take off the ESD wrist strap or ESD gloves, and pack up all tools.

----End



28





29

7 Replacing the Components in the IMB03About This Chapter

This chapter describes how to replace the components in the IMB03, including the AC/DC powerequipment and DCDU-03B.7.1 Replacing the AC/DC Power EquipmentThe AC/DC power equipment is used in an AC cabinet, converting external 220 V AC inputpower into -48 V DC power.7.2 Replacing the DCDU-03BThe DCDU-03B distributes DC power to different components. Replacing the DCDU-03Bdisrupts the power supply to the entire base station and all services carried by the base station.

BBU3900Hardware Maintenance Guide 7 Replacing the Components in the IMB03


30

7.1 Replacing the AC/DC Power EquipmentThe AC/DC power equipment is used in an AC cabinet, converting external 220 V AC inputpower into -48 V DC power.

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

Phillips screwdriver, and M6 Phillips screwdriver.l The quantities and types of modules to be replaced are confirmed, and the new modules

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

required keys.

Contextl Figure 7-1 shows the position of the AC/DC power equipment in the cabinet.

Figure 7-1 Position of the AC/DC power equipment in the cabinet

(1) AC/DC power equipment

l Figure 7-2 shows the positions of the components in the AC/DC power equipment.

Figure 7-2 Positions of the components in the AC/DC power equipment

(1) Power distribution unit(PDU)

(2) Power supply unit(PSU)

(3) Power monitoring unit(PMU)

(4) Subrack



31

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

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

NOTE

l If you have confirmed that the subrack is faulty and needs to be replaced, you need to removethe PDU, PSUs, and PMU before removing the subrack from the cabinet.

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

l Replacing the AC/DC power equipment, PSU, PMU, PDU, or subrack interrupts all theservices carried by the base station. Therefore, the AC/DC power equipment or itscomponents must be replaced in 20 minutes.

ProcedureStep 1 Power off the AC/DC power equipment.Step 2 Put on an ESD wrist strap or ESD gloves.

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

Step 3 Record all cable connections on the panel of the component to be replaced.Step 4 Remove the component to be replaced.

l Remove the entire AC/DC power equipment.1. Remove all cables from the AC/DC power equipment.2. Loosen the four M6 screws on the mounting ears of the AC/DC power equipment, and

remove the AC/DC power equipment, as shown in Figure 7-3.



32

Figure 7-3 Removing the AC/DC power equipment

l Remove the PDU.1. Remove the DC output power cable from the PDU, as shown in Figure 7-4.

Figure 7-4 Removing the cable from the PDU

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

7-5.



33

Figure 7-5 Removing the PDU

l Remove the PSU.Loosen the M3 screw from the PSU panel, and remove the PSU, as shown in Figure 7-6.

Figure 7-6 Removing the PSU

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

Figure 7-7 Removing the cable from the PMU

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

7-8.



34

Figure 7-8 Removing the PMU

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

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

l Remove the subrack.1. Remove all cables from the AC/DC power equipment.2. Remove the PDU, PSU, and PMU from the subrack.3. Loosen the four M6 screws on the mounting ears of the subrack, and then remove the

subrack, as shown in Figure 7-9.

Figure 7-9 Removing the subrack



35

Step 5 Install the new component.

l Install the new AC/DC power equipment, tighten the screws on the mounting ears to 2 Nm(17.70 lbfin.), and then reconnect related cables.

l Install the new PDU, tighten the screw on the panel to 0.55 Nm (4.87 lbfin.), and thenreconnect related cables.

l Install the new PSU and tighten the screw on the panel to 0.55 Nm (4.87 lbfin.).l Install the new PMU, and tighten the screw on the panel to 0.55 Nm (4.87 lbfin.), and then

reconnect related cables.l Install the new subrack, tighten the screws on the mounting ears to 2 Nm (17.70 lbfin.),

install the PDU, PSU, and PMU in sequence, and then reconnect related cables.Step 6 Power on the AC/DC power equipment.Step 7 Check whether the AC/DC power equipment works properly according to the status of the

indicators on the AC/DC power equipment, BBU, and RRU.NOTE

For details about the indicators on the AC/DC power equipment, BBU, and RRU, see the correspondinghardware description document.




7.2 Replacing the DCDU-03BThe DCDU-03B distributes DC power to different components. Replacing the DCDU-03Bdisrupts the power supply to the entire base station and all services carried by the base station.


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

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

required keys.

Contextl Figure 7-10 shows the position of the DCDU-03B in the IMB03.



36

Figure 7-10 Position of the DCDU-03B

(1) DCDU-03B

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


Step 3 Record all the cable connections on the panel of the module to be replaced.Step 4 Disconnect the power cables from the DCDU-03B, as shown in Figure 7-11.




37

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

7-12.

Figure 7-12 Removing the DCDU-03B

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

reaches 2 Nm (17.70 lbfin.), and reconnect the cables.Step 7 Power on the DCDU-03B.Step 8 Take off the ESD wrist strap or ESD gloves, and pack up all tools.

----End





38

8 Replacing the Components in the BBU3900About This Chapter

This chapter describes how to replace the components in the BBU3900 during the maintenance,including the BBU3900 case, BBU3900 boards and modules, and optical modules.

NOTEIn a dual-mode base station, if two main control boards need to be replaced, you must replace one maincontrol board and wait for the new board to resume services before replacing the other main control board.

8.1 Querying the Electronic Label for a BoardBefore replacing a board, you need to query the board information to confirm the type of boardto be replaced.8.2 Replacing the UMPTa1/UMPTb1The universal main processing and transmission unit (UMPT) processes signaling messages andmanages resources on other boards.8.3 Replacing the WMPTThe WCDMA main processing and transmission unit (WMPT) processes signals and managesresources on other boards.8.4 Replacing the GTMUThe GSM transmission and management unit (GTMU) is the basic transmission and controlfunction entity of the BBU. It provides the reference clock, power supply port, maintenance port,and external alarm collection port, and controls and manages the entire base station.8.5 Replacing the UMPTa2/UMPTa6The universal main processing and transmission unit (UMPT) processes signaling messages andmanages resources on other boards.8.6 Replacing the LMPTThe LTE main processing and transmission unit (LMPT) manages the entire eNodeB system interms of OM and signaling processing and provides system clock for the BBU.8.7 Replacing the WBBPThe WCDMA baseband processing unit (WBBP) is configured in the BBU and it processesbaseband signals.8.8 Replacing the LBBP

BBU3900Hardware Maintenance Guide 8 Replacing the Components in the BBU3900


39

The LTE baseband processing unit (LBBP) in the BBU processes baseband and common publicradio interface (CPRI) signals.8.9 Replacing a UPEUA universal power and environment interface unit (UPEU) is configured in a BBU and it converts-48 V DC or +24 V DC power into +12 V DC power.8.10 Replacing the UEIUThe Universal Environment Interface Unit (UEIU) provides channels for transmitting themonitoring signals from external equipment to the BBU.8.11 Replacing the FAN UnitThe FAN unit is located in the BBU. The FAN unit and the air intake box form a ventilationloop, which ensures ventilation and heat dissipation. Replacing the FAN unit may lead toovertemperature alarms due to interruption of heat dissipation in the BBU. The services,however, are not affected.8.12 Replacing a UTRPA universal transmission processing unit (UTRP) provides ports for transmission.8.13 Replacing the USCUThe Universal Satellite card and Clock Unit (USCU) in the BBU receives clock signals, such asGlobal Positioning System (GPS), remote global position system (RGPS), building integratedtiming supply (BITS), and M-1PPS signals. In addition, it transmits or receives 1PPS+TODclock signals.8.14 Replacing a UBRIA universal baseband radio interface board (UBRI) provides ports for common public radiointerface (CPRI) cables. Replacing a UBRI interrupts services carried by the board.8.15 Replacing the UCIUThe Universal inter-Connection Infrastructure Unit (UCIU) interconnects BBUs. It forwardscontrol and synchronization information from one BBU to another.8.16 Replacing the Optical ModuleThe optical module is used for the optical transmission between the BBU and other devices.



40

8.1 Querying the Electronic Label for a BoardBefore replacing a board, you need to query the board information to confirm the type of boardto be replaced.1. Run the DSP BTSELABEL command on the LMT to query the information of the board

that is configured on the GSM side or run the DSP BRDMFRINFO command on the LMTto query the information of the board that is configured on the UMTS or LTE side.

2. Confirm the type of the board to be replaced according to the Boadtype and Descriptionfields in the query result. Ensure that the new board is of the same type by checking theinformation indicated by the bar code on the label of the panel or handle of the new board.Figure 8-1 shows a label containing the bar code.

Figure 8-1 A label containing the bar code

8.2 Replacing the UMPTa1/UMPTb1The universal main processing and transmission unit (UMPT) processes signaling messages andmanages resources on other boards.

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

If the board can be queried online, run the associated command on the LMT followingthe instructions in 8.1 Querying the Electronic Label for a Board. If the board is faulty and cannot be queried online, query the board information offline

on the M2000 following the instructions in Querying Inventory Data.l To back up the configuration file and software, see Manually Backing Up NE Data.l To download the backup configuration file and software, do as follows:

If the configuration file and software are downloaded by using a USB flash drive, seeObtaining a USB Flash Drive for NodeB Commissioning. If the WMPT needs to be upgraded on the LMT after the replacement, upload the

configuration file of the base station to the FTP server of the M2000 following theinstructions in Transferring Files from NEs to a Client.

l Query alarms reported by the base station. For details, see Browsing the Current Alarm.l The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves

and an M3 Phillips screwdriver.



41

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

Contextl Figure 8-2 shows the position of the UMPT in the BBU.

Figure 8-2 Position of the UMPT

l The UMPT is hot-swappable.l If a multi-mode base station supports co-transmission and the shared ports for co-

transmission are on the UMPT, replacing the UMPT interrupts the services of the peermode. Typical scenario: The GU dual-mode base station supports co-transmission over IPthrough the Ethernet link on the UMPT. The GSM data is transmitted through the FE portsinterconnecting the UMPT and GTMU panels.

l For a multi-mode base station in dual-star topology, when the UMPT is removed andinserted again, the rate of GSM or LTE data services may decrease. However, voice serviceswill not be affected.

ProcedureStep 1 Before replacing the UMPT, ask the M2000 administrator to perform the following operation:

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

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

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

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

Step 3 Record cable connections on the panel of the UMPT to be replaced.Step 4 Disconnect the transmission cable from the UMPT. If a surge protection board is configured,

the surge protection transfer cable also needs to be disconnected, as shown in Figure 8-3.



42


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

shown in Figure 8-4.

CAUTIONl When removing a board, hold it with both hands, and ensure it does not collide with the

subrack.l When moving a board, hold it with both hands.

Figure 8-4 Removing the UMPT

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

replaced board. For details, see UMPT.Step 7 Install the new board, lower the ejector levers, tighten the screws on the board panel to 0.6 Nm

(5.31 lbfin.), and reconnect the cables.

CAUTIONWhen removing or installing a board of the BBU, ensure that correct operations are performed.For the correct operations, see section Operation Rules in the 9 Adding Components in theBBU3900.

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



43

Step 9 Upgrade NodeB software and load data configuration file.l To upgrade the NodeB software and load the configuration file by using a USB flash drive,

see Upgrading the NodeB Software and Downloading the Data Configuration File (on theNodeB Side).

l To upgrade the NodeB software and load the data configuration file on the LMT, seeUpgrading the NodeB Software and Downloading the Data Configuration File.

Step 10 Inform the M2000 administrator that the replacement is complete, and instruct the administratorto perform the following operations:1. On the NodeB, run the UBL LOCELL command to unblock all cells of the NodeB.2. Check whether any new alarms are generated by the base station according to the


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

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



into a foam-padded carton or the packing box of the new module.l Fill in the fault form with detailed information about the replaced component.l Contact the local Huawei office to handle the faulty component.

8.3 Replacing the WMPTThe WCDMA main processing and transmission unit (WMPT) processes signals and managesresources on other boards.

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 NodeB reconfiguration before and after thereplacement, see RAN Reconfiguration Guide.

l To confirm the type of a faulty board, do as follows: If the board can be queried online, run the associated command on the LMT following

the instructions in 8.1 Querying the Electronic Label for a Board. If the board is faulty and cannot be queried online, query the board information offline

on the M2000 following the instructions in Querying Inventory Data.l To back up the configuration file and software, see Manually Backing Up NE Data.



44

l Optional: If a UMPT is used to replace a WMPT and the NodeB uses the VLAN group,the VLAN mode must be changed from the VLAN group to the single VLAN.

l To download the backup configuration file and software, do as follows: If the configuration file and software are downloaded by using a USB flash drive, see

Obtaining a USB Flash Drive for NodeB Commissioning. If the WMPT needs to be upgraded on the LMT after the replacement, upload the

configuration file of the base station to the FTP server of the M2000 following theinstructions in Transferring Files from NEs to a Client.

l Query alarms reported by the base station. For details, see Browsing the Current Alarm.l The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves

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

required keys.

Contextl Figure 8-5 shows the position of the WMPT in the BBU.

Figure 8-5 Position of the WMPT in the BBU

WMPT

WMPT

ETH FE0 FE1 USB TST E1/T1 RST GPS

RUNALMACT

TX RX

l The WMPT is hot-swappable.l If a multi-mode base station supports co-transmission and the shared ports for co-

transmission are on the WMPT, replacing the WMPT interrupts the services of the peermode. Typical scenario: The GU dual-mode base station supports co-transmission over IPthrough the Ethernet link on the WMPT. The GSM data is transmitted through the FE portsinterconnecting the WMPT and GTMU panels.

l For a multi-mode base station in dual-star topology, when the WMPT is removed andinserted again, the rate of GSM or LTE data services may decrease. However, voice serviceswill not be affected.

ProcedureStep 1 Before replacing the WMPT, ask the M2000 administrator to perform the following operations:

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

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




45


Step 3 Record cable connections on the panel of the WMPT to be replaced.Step 4 Disconnect the transmission cable from the WMPT. If a surge protection board is configured,

the surge protection transfer cable also needs to be disconnected, as shown in Figure 8-6.


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




Figure 8-7 Removing the WMPT



46

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

Step 7 Install the new board, lower the ejector levers, tighten the screws on the board panel to 0.6 Nm(5.31 lbfin.), and reconnect the cables.


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

Step 9 Upgrade NodeB software and load data configuration file.l To upgrade the NodeB software and load the configuration file by using a USB flash drive,

see Upgrading the NodeB Software and Downloading the Data Configuration File (on theNodeB Side).

l To upgrade the NodeB software and load the data configuration file on the LMT, seeUpgrading the NodeB Software and Downloading the Data Configuration File.

Step 10 Inform the M2000 administrator that the replacement is complete, and instruct the administratorto perform the following operations:1. On the NodeB, run the UBL LOCELL command to unblock all cells of the NodeB.2. Check whether any new alarms are generated by the base station according to the


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

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



into a foam-padded carton or the packing box of the new module.l Fill in the fault form with detailed information about the replaced component.l Contact the local Huawei office to handle the faulty component.

8.4 Replacing the GTMUThe GSM transmission and management unit (GTMU) is the basic transmission and controlfunction entity of the BBU. It provides the reference clock, power supply port, maintenance port,and external alarm collection port, and controls and manages the entire base station.



47

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

If the board can be queried online, run the associated command on the LMT followingthe instructions in 8.1 Querying the Electronic Label for a Board. If the board is faulty and cannot be queried online, query the board information offline

on the M2000 following the instructions in Querying Inventory Data.l To query the base station information, do as follows:

On the BSC, run the LST BTSAUTODLDACTINFO command to check whether thefunction of automatically loading and activating base station software has been enabled. Query alarms reported by the base station. For details, see Browsing the Current Alarm. If a GBTS uses a static IP address, run the LST BTSIPRT, LST BTSDEVIP, and LST

BTSIP commands to query the IP addresses and routing information.l To back up the configuration file and software, see Manually Backing Up NE Data.l If the configuration file and software are downloaded by using a USB flash drive, see

Obtaining the USB Flash Drive for On-Site GBTS Commissioning.l The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves

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

is available for a GBTS using a static IP address. For details about the hardwarerequirements for the computer, see the GSM SMT User Guide.

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

ContextYou can replace the GTMU with another GTMU or a GTMUb.l Figure 8-8 shows the position of the GTMU in the BBU.

Figure 8-8 Position of a GTMU

GTMU

GTMU

ETH FE0 FE1

CPRI0 CPRI2 CPRI4

CPRI3CPRI1 CPRI5TX RX

TX0 RX0 TX1 RX1 TX2 RX2 TX3 RX3 TX4 RX4 TX5 RX5 LIU0LIU2

LIU1LIU3

USB TST E1/T1 RST

RUNALMACT

1 2 3 4 5

l The GTMU is hot-swappable.l If a multi-mode base station supports co-transmission and the shared port for co-

transmission is located GTMU, replacing the GTMU interrupts services of the peer mode.Typical scenario: The GU dual-mode base station supports co-transmission over TDMthrough the E1/T1 ports on the GTMU. The UMTS data is transmitted through thebackplane in the manner of TDM over Packet (ToP).



48

l For a multi-mode base station in dual-star topology, when the GTMU is reset abnormallyor removed and inserted again, UMTS or LTE data or voice services may be interrupted.

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

the BSC, run the SET GCELLADMSTAT command and set ADMSTAT to LOCK to blockall cells of the BTS.



Step 3 Record cable connections on the panel of the GTMU to be replaced.Step 4 Disconnect the transmission cable and CPRI cables from the GTMU. If a surge protection board

is configured, the surge protection transfer cable also needs to be disconnected, as shown inFigure 8-9.


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






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Figure 8-10 Removing the GTMU

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

replaced board. For details about the DIP switch, see GTMU.Step 7 Install the new board, lower the ejector levers, tighten the screws on the board panel to 0.6 Nm

(5.31 lbfin.), and reconnect the cables.


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

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

Before commissioning the GBTS on the SMT, ensure that the GBTS commissioning port is enabled byrunning the SET BTSLOCALETHPORT command on the BSC LMT.

1. Connect the computer on which the SMT application is installed to the ETH port on theGTMU, as shown in Figure 8-11.

Figure 8-11 Connecting the GTMU



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2. Log in to the SMT, and configure the static IP data according to the instructions in the GSMSMT User Guide.

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

Step 10 To upgrade GBTS software and load the configuration file, do as follows:l To upgrade the GBTS software and load the configuration file by using a USB flash drive,

see Upgrading the GBTS Software and Configurations.

NOTICEIf the UTRPc works in GSM mode and is connected to the transport network, the GBTSsoftware and configuration file must be upgraded by using a USB flash drive.

l To upgrade the GBTS software and load the configuration file using the SMT locally andthe LMT remotely.

NOTEBefore commissioning the GBTS on the SMT, ensure that the GBTS commissioning port is enabledby running the SET BTSLOCALETHPORT command on the BSC LMT. a. Query the software vers

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