BTS3606CE BTS3606AC CDMA.pdf

BTS3606CE BTS3606AC CDMAV400R007C01

Site Maintenance Guide

Issue 01

Date 2011-04-27

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2011. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior 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 the 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 01 (2011-04-27) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.

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http://www.huawei.com

mailto:[email protected]

About This Document

PurposeThis document describes the routine maintenance and part replacement of the BTS3606CE andthe BTS3606AC.

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

Product Name Product Version

BTS3606CE V400R007C01

BTS3606AC

Intended AudienceThis document is intended for:

l Site maintainers

l System engineers

l Network shifts

l Network operators

Change HistoryVersion Change History

01 (2011-04-27) First official release.

Draft A (2011-01-01) Draft A of V400R007C01.

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Organization1 Tasks of Routine BTS Hardware Maintenance

During site maintenance, you need to check related hardware periodically.

2 Replacing BTS Parts

During site maintenance, you can replace BTS parts to meet the needs.

3 Reference Information

This describes reference information of site maintenance.

ConventionsSymbol Conventions

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

Symbol Description

Indicates a hazard with a high level of risk, which if notavoided, will result in death or serious injury.

Indicates a hazard with a medium or low level of risk, whichif not avoided, could result in minor or moderate injury.

Indicates a potentially hazardous situation, which if notavoided, could result in equipment damage, data loss,performance degradation, or unexpected results.

Indicates a tip that may help you solve a problem or savetime.

Provides additional information to emphasize or supplementimportant points of the main text.

General Conventions

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

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files, directories, 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.

About This DocumentBTS3606CE BTS3606AC CDMA


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Command Conventions

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


Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

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

{ x | y | ... } Optional items are grouped in braces and separated 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.

About This DocumentBTS3606CE BTS3606AC CDMA


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Contents

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

1 Tasks of Routine BTS Hardware Maintenance....................................................................1-1

2 Replacing BTS Parts..................................................................................................................2-12.1 Replacing the BBU3900..................................................................................................................................2-3

2.1.1 Replacing a BBU3900 Case...................................................................................................................2-42.1.2 Replacing a CMPT.................................................................................................................................2-52.1.3 Replacing an HCPM or HECM..............................................................................................................2-72.1.4 Replacing a UPEU.................................................................................................................................2-82.1.5 Replacing a UTRP................................................................................................................................2-102.1.6 Replacing a UELP or UFLP.................................................................................................................2-112.1.7 Replacing a UEIU................................................................................................................................2-122.1.8 Replacing a UBRI................................................................................................................................2-132.1.9 Replacing a USCU...............................................................................................................................2-142.1.10 Replacing a FAN................................................................................................................................2-152.1.11 Replacing an Optical Module.............................................................................................................2-162.1.12 Replacing a Power Cable...................................................................................................................2-182.1.13 Replacing an E1/T1 Cable..................................................................................................................2-182.1.14 Replacing an E1/T1 Surge Protection Transfer Cable.......................................................................2-192.1.15 Replacing an FE Cable.......................................................................................................................2-212.1.16 Replacing an FE Surge Protection Transfer Cable.............................................................................2-222.1.17 Replacing a CPRI Cable.....................................................................................................................2-232.1.18 Replacing an Alarm Cable.................................................................................................................2-242.1.19 Replacing a Clock Signal Cable.........................................................................................................2-24

2.2 Replacing the Monitoring Transfer Board....................................................................................................2-252.3 Replacing the EMUA....................................................................................................................................2-262.4 Replacing the Storage Batteries....................................................................................................................2-262.5 Replacing the DCDU....................................................................................................................................2-282.6 Replacing the Heat Exchanger......................................................................................................................2-302.7 Replacing the STDM.....................................................................................................................................2-312.8 Replacing the SPAM.....................................................................................................................................2-332.9 Replacing the SLPU......................................................................................................................................2-342.10 Replacing the PSUAC/DC.............................................................................................................................2-35

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2.11 Replacing the PMU.....................................................................................................................................2-352.12 Replacing the FAN......................................................................................................................................2-362.13 Replacing the PDU......................................................................................................................................2-382.14 Replacing the Surge Protector of the Satellite Antenna System ................................................................2-40

3 Reference Information .............................................................................................................3-13.1 Powering On and Powering Off the BTS........................................................................................................3-2

3.1.1 Powering On the BTS............................................................................................................................3-23.1.2 Powering Off the BTS............................................................................................................................3-5

ContentsBTS3606CE BTS3606AC CDMA


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Figures

Figure 1-1 Power cable connection of the BTS3606AC......................................................................................1-7Figure 1-2 Cable connections for the BTS3606CE (-48 V cabinet).................................................................... 1-8Figure 2-1 Removing the cover of the storage batteries.....................................................................................2-27Figure 2-2 Installing the storage batteries..........................................................................................................2-27Figure 2-3 Power cable connections of built-in storage batteries......................................................................2-28Figure 2-4 Positions where silica gel is applied on the front door of the cabinet (unit: mm)............................2-30Figure 2-5 Appearance of the BTS3606CE cabinet...........................................................................................2-38Figure 3-1 PDB of the BTS3606CE (-48 V cabinet) .......................................................................................... 3-2Figure 3-2 PDB of the BTS3606CE (+24 V cabinet) ......................................................................................... 3-3Figure 3-3 PDB of the BTS3606AC (AC PDB).................................................................................................. 3-3Figure 3-4 PDB of the BTS3606AC (DC PDB).................................................................................................. 3-4

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Tables

Table 1-1 Routine check list.................................................................................................................................1-2Table 1-2 Power cable distribution of the BTS3606AC.......................................................................................1-7Table 1-3 Power cable distribution of the BTS3606CE (-48 V cabinet)..............................................................1-8

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1 Tasks of Routine BTS HardwareMaintenance

During site maintenance, you need to check related hardware periodically.

l The multimeter, earth resistance meter, wrench, and cleaning tool are available.l In the remote equipment room, there are engineers responsible for operations on the Service

Maintenance System.

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Table 1-1 Routine check list

MaintenanceFrequency

Maintenance Task

Instruction ReferenceStandard

Impact bytheExceptionof theMaintained Item

Solution

Once half ayear

Checking thecables

Check allcables in thecabinet.Ensure thatthewaterproofplug is fixedinto the cableoutlet or thecable outletis sealed bywaterproofcement.Figure 1-1shows thecabling oftheBTS3606ACcabinet.Figure 1-2shows thecabling oftheBTS3606CEcabinet.

l The cableis notcorrodedordamaged.

l Thecables areconnectedsecurelyandreliably.

l There is aproperdistancebetweencablesandhumanbodies orequipment.

Theequipment ofwhich thecables arenot securelyconnectedmalfunctionsor partiallymalfunctions.

Reconnect orreplace theexceptionalcables.

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Maintenance Task



Solution

Once half ayear

Checking thestoragebatteries

l Checkalarms ontheServiceMaintenanceSystem.

l Checktheexteriorof thestoragebatteries.

l No alarmisgenerated.

l Thestoragebatterieshave noelectrolyte leak anddo notswell.There isnoforeignobjectbetweenthe anodeandcathodeof thestoragebatteries.

Theexceptions ofstoragebatteries willcause theshortening ofpowerbackup timeor lack of thepowerbackupfunction.

Clear allforeignobjects onthe site orreplace thestoragebatteries.

Once half ayear

Checking thefans


l Checktheexteriorof thefans.


l The fansdo notgenerateanypeculiarsound orsmell.

Theexception offans causesanexcessivelyhightemperatureof some partsin thecabinet. Inthis case, anovertemperature alarm isreported, orthe system isprotectedagainst thehightemperatureautomatically.

Replace thefaulty fans.



1-3


Maintenance Task



Solution

Once half ayear

Checking thegroundingand lightningprotectionperformance

l Checkthegrounding offeeders.

l Checkthe earthresistance. (Itneeds tobe testedbyprofessionalpersonnelwith anearthresistance meter.)

l Checkthegrounding of E1/T1cables.

l Thefeedergrounding bar isconnectedproperlyand is notrusty.

l Thegroundingresistance is equalto or lessthan 10ohm orcomplieswith thelocalgroundingstandard.

l Do notgroundtwistedpaircablesandgroundonly oneend ofcoaxialcables.

Theexcessivelyhigh earthresistancewill cause adecrease inthe lightningprotectionperformanceand theprotectionfrom theinterferenceof the powergrid.

Find thecauses of theincrease inthe earthresistanceand improvethe earthresistanceconditions.




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Maintenance Task



Solution

Once half ayear

Checking thecabinet

l Checktheexteriorof thecabinet.

l Checkthe doorand lockof thecabinet.

l Thecabinet isnotdamaged,has nocrack,sinkmark,paintingpeel-off,corrosion, or rust.Thelabels arelegible.

l The doorand lockarefunctional and notdamaged.Thesupporting lever isfunctional.

l Theseriousexceptionmayaffect theperformance of theequipment in thecabinet.

l If thedoor andlockmalfunction, theequipment may bestolen orcannot bemaintained.

l If theequipmentperformance isaffected,replacethecabinet.

l Replacethe doorand lock.



1-5


Maintenance Task



Solution

Once half ayear

Checking theindicators


l Observeon thesite.

NOTECheck theindicators onall boards,including theSTDM,PMU, PSU,SPAM,temperaturecontrol unit,and RF fansubrack, inthe BBU.


l After thedoor ofthecabinet isopened,allindicators are inthenormalstate,exceptthat theindicatoron thePMUbecomesON inred,indicating the doorstatusalarm.

If anindicatorbecomes ONin red, theassociatedpart hasexceptions.

Solve theproblemaccordingly.

Once half ayear

Checking thecleanlinessof the cabinet

Observe onthe site.NOTE

The anti-dust net inthe cabinet isexposed todust, and thedust mayeasily affectthe cabinetsin the areanear roads ordeserts.Therefore,check andreplace theanti-dust netperiodically.

The exteriorof the cabinetis clean, andno dustaccumulatesinside thecabinet.

The pollutedexterior ofthe cabinetmayacceleratethe corrosionof the cabinetand obstructthe heatdissipationof thecabinet.

Clean theexteriors andinteriors ofcabinets.




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Figure 1-1 Power cable connection of the BTS3606AC

Table 1-2 Power cable distribution of the BTS3606AC

Number Cable Name

L1, L2, L3, N BTS External Power Cables

P1 to P5 Power cables connecting the AC surge protection box and the PSU

P6, P7 Power cables connecting the PSU and the storage batteries

P8, P9 Power cables connecting the PSU and the DCDU

P10 Power cable connecting the DCDU and the BBU

P11 Power cable connecting the DCDU and the STDM

P12 Power cable connecting the STDM and the SPAM/FAN

P13 Power cable connecting the AC surge protection box and the heatexchanger

P14 Power cable connecting the DCDU and the heat exchanger



1-7

Figure 1-2 Cable connections for the BTS3606CE (-48 V cabinet)

Table 1-3 Power cable distribution of the BTS3606CE (-48 V cabinet)

Number Cable Name

1 E1/T1 Surge Protection Transfer Cable of the BBU3900

2 -48 V Power Cable of the BBU3900

3 STDM power cable

4 SPAM/FAN power cable

5 RS485 signal cable

6 SMA RF Signal Cable

7 CPRI Cable




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2 Replacing BTS Parts

About This Chapter

During site maintenance, you can replace BTS parts to meet the needs.

2.1 Replacing the BBU3900This topic describes how to replace the BBU3900. When the BBU3900 is faulty, replace it.

2.2 Replacing the Monitoring Transfer BoardThis describes how to replace a faulty monitoring transfer board.

2.3 Replacing the EMUAThis describes how to replace a faulty EMUA.

2.4 Replacing the Storage BatteriesThis describes how to replace an entire set of faulty storage batteries.

2.5 Replacing the DCDUThis describes how to replace the faulty DCDU.

2.6 Replacing the Heat ExchangerWhen the head exchanger on the door of the cabinet is faulty, you need to replace it. When thecontrol panel on the heat exchanger is faulty (other parts of the heat exchanger are not faultyand you need not replace the entire heat exchanger), replace the control panel.

2.7 Replacing the STDMThis describes how to replace the Standalone Transceiver Duplex Filter Module (STDM).

2.8 Replacing the SPAMThis topic describes how to replace the Standalone Power Amplifier Module (SPAM). Whenthe SPAM is faulty, replace it.

2.9 Replacing the SLPUThis describes how to replace the faulty SLPU.

2.10 Replacing the PSUAC/DCThis describes how to replace the faulty PSUAC/DC.

2.11 Replacing the PMUThis describes how to replace the faulty PMU.

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2.12 Replacing the FANThis describes how to replace the faulty FAN. The FAN mentioned in this topic is the FAN ofthe carrier, rather than the FAN of the BBU.

2.13 Replacing the PDUThis section describes how to replace the PDU when the BTS3606CE PDU is faulty.

2.14 Replacing the Surge Protector of the Satellite Antenna SystemThis describes how to replace the faulty surge protector of the BTS satellite antenna system. Thesurge protector of the satellite antenna system provides surge protection for GPS clock signalsentering the BTS. If the faulty surge protector is replaced within a short period, GPS clock signalsare disrupted for a moment, but services of the BTS are not affected.

2 Replacing BTS PartsBTS3606CE BTS3606AC CDMA



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2.1 Replacing the BBU3900This topic describes how to replace the BBU3900. When the BBU3900 is faulty, replace it.

ContextNOTEAll the BBU3900 boards are hot-swappable.

2.1.1 Replacing a BBU3900 CaseA faulty BBU3900 case must be replaced with a new one. The BBU3900 processes basebandsignals of the BTS system, and provides a port for data communication between the BTS andthe BSC. All services of the BTS may be interrupted when the BBU3900 case is replaced.

2.1.2 Replacing a CMPTA CMPT is a main control and transmission unit of the BBU3900. It provides transmission ports,clock ports, and OM ports, and manages equipment. When only one CMPT is configured in theBBU3900, replacing the CMPT interrupts BTS services.

2.1.3 Replacing an HCPM or HECMAn HCPM or HECM processes baseband signals of the BTS system. Replacing the HCPM orHECM interrupts its services.

2.1.4 Replacing a UPEUA UPEU is the power module of the BBU3900. It supplies power to boards in the BBU3900.When only one UPEU is configured in the BBU3900, replacing the UPEU interrupts BTSservices.

2.1.5 Replacing a UTRPA UTRP transmits data between the BBU3900 and the BSC. Replacing the UTRP interrupts itstransmission services.

2.1.6 Replacing a UELP or UFLPA UELP or UFLP is the surge protection unit for BBU3900 trunk cables. It provides surgeprotection for E1/T1 and FE links. Replacing the board interrupts its transmission services.

2.1.7 Replacing a UEIUA UEIU is the environment interface unit. It transmits information about environmentmonitoring equipment and alarms to the CMPT. Replacing the UEIU does not affect BTSservices.

2.1.8 Replacing a UBRIA UBRI is a baseband radio interface unit. It implements the functions of PN sharing, 1Xresource pool, and convergence and distribution of baseband data.

2.1.9 Replacing a USCUA USCU is the extension satellite card clock unit of the BBU3900. It provides clock signalssuch as BITS, GPS, and RGPS clock signals. Replacing the USCU does not affect services.

2.1.10 Replacing a FANThe FAN is the fan unit of the BBU3900. It dissipates heat from the BBU3900. Replacing theFAN does not affect BTS boards and services if the replacement is completed within 3 minutes.

2.1.11 Replacing an Optical ModuleA swappable optical module supports optical fiber transmission. Replacing the swappableoptical module interrupts services carried over the optical fiber.



2-3

2.1.12 Replacing a Power CableA power cable connects the power port on the BBU3900 and the external power supply to feedthe external power supply into the BBU3900. You must power off the BBU3900 before replacingthe power cable.

2.1.13 Replacing an E1/T1 CableAn E1/T1 cable functions as the physical carrier of service exchanges between the BBU3900and the BSC. Replacing the E1/T1 cable interrupts services carried by the E1/T1 cable.

2.1.14 Replacing an E1/T1 Surge Protection Transfer CableAn E1/T1 surge protection transfer cable connects the CMPT or UTRP and the UELP. Itfunctions as the physical carrier of signal exchanges between the BBU3900 and the UELP.Replacing the E1/T1 surge protection transfer cable interrupts BTS transmission services.

2.1.15 Replacing an FE CableAn FE cable functions as the physical carrier of service exchange between the BBU3900 andthe BSC. Replacing the FE cable interrupts services carried by the FE cable.

2.1.16 Replacing an FE Surge Protection Transfer CableAn FE surge protection transfer cable connects the CMPT and the UFLP. It functions as thephysical carrier of signal exchanges between the BBU3900 and the UFLP. Replacing the FEsurge protection transfer cable interrupts BTS transmission services.

2.1.17 Replacing a CPRI CableA CPRI cable connects the BBU3900 and the RRU to transmit baseband signals. Replacing theCPRI cable interrupts services carried by the CPRI cable.

2.1.18 Replacing an Alarm CableAn alarm cable connects the UPEU and an external alarm device to monitor the externalenvironment. Replacing the alarm cable interrupts the external monitoring function of the BTS.

2.1.19 Replacing a Clock Signal CableReplacing a clock signal cable affects BTS clock signals.

2.1.1 Replacing a BBU3900 CaseA faulty BBU3900 case must be replaced with a new one. The BBU3900 processes basebandsignals of the BTS system, and provides a port for data communication between the BTS andthe BSC. All services of the BTS may be interrupted when the BBU3900 case is replaced.

PrerequisiteThe following tools and materials are available: ESD wrist straps or ESD gloves, Phillipsscrewdriver, key to the cabinet door.

Procedure

Step 1 Record the carrier information.Run the DSP CBTSSECTORCARRIERINFO command to query the cell IDs, sector IDs, andcarrier IDs of the BTS. Then, record the IDs.

Step 2 Block carriers.1. Run the BLK RES command to block all carriers. Set Priority to Low.2. Run the DSP RES command to check whether all carriers are blocked. If they are blocked,

go to the next step.




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Step 3 Power off the BBU3900.1. Set the load circuit breaker on the BBU3900 to OFF.2. Disconnect the power supply.

Step 4 Remove the faulty BBU3900 case.1. Label the BBU3900 cables and remove them.2. Remove the screws on the BBU3900.3. Remove the BBU3900 case.

Step 5 Install a new BBU3900 case.1. Position a new BBU3900 case.2. Tighten the screws on the BBU3900 case.3. Install the boards previously removed from the faulty BBU3900 case to the new BBU3900

case.4. Install the cables previously removed from the faulty BBU3900 case to the new BBU3900

case according to the labels on the cables.

Step 6 Power on the BBU3900.1. Connect the power supply.2. Set the load circuit breaker of the BBU3900 to ON.

Step 7 Unblock carriers.

Run the UBL RES command to unblock carriers.

Step 8 Check the operating status of the new BBU3900 based on the indicator description.

----End

Follow-up ProcedurePerform the following operations after the faulty BBU3900 is replaced:

1. Record the version, board name, slot number, and site name of the faulty board.2. Check whether there is visible physical damage on the board, for example, mechanical parts

or plug-ins are distorted, pins are bent or missing, or the board is burnt.3. Record the information about the fault location process, including the cause of the fault,

fault symptoms, alarm name, status of indicators on the board panel, and detailedprocedures for identifying and clearing the fault on site.

4. Place the faulty board in an antistatic bag. Then, place the onsite fault record and theantistatic bag in the board box, and store them properly.

2.1.2 Replacing a CMPTA CMPT is a main control and transmission unit of the BBU3900. It provides transmission ports,clock ports, and OM ports, and manages equipment. When only one CMPT is configured in theBBU3900, replacing the CMPT interrupts BTS services.

PrerequisiteThe following tools and materials are available: ESD wrist strap, ESD gloves, Phillipsscrewdriver, and ESD box or bag.



2-5

Context

A maximum of two CMPTs in active/standby mode can be configured in the BBU3900.

CAUTIONReplacing the active CMPT interrupts BTS services.

Before replacing the faulty board, run the DSP CBTSBRDSTAT command to check whetherthe board to be replaced is the active board. If it is the active board, run the SWP CBTSBRDcommand to perform an active/standby switchover.

Procedure

Step 1 Determine the position of the faulty board.

Attach a label to the board panel before replacing the faulty board.

Step 2 Block carriers.

1. Run the BLK RES command to block all carriers of the BTS. Set Priority to Low.

2. Run the DSP RES command to check whether all carriers of the BTS are blocked. If theyare blocked, go to the next step.

Step 3 Remove the faulty board.

1. Wear an ESD wrist strap and ESD gloves, and then insert the ground terminal into the ESDport on the cabinet.

2. If cables were connected to the faulty CMPT, label the cables before removing them.

3. Loosen the screws on the panel and remove the CMPT.

4. Place the faulty board in an ESD box or bag.

Step 4 Install a new board.

1. Take out a new CMPT. Confirm that the new CMPT is intact.

2. Install the new CMPT and tighten the screws on the panel.

3. If cables were disconnected from the faulty CMPT, connect those cables to the new CMPTaccording to the labels.

Step 5 Load board software.

l If automatic software loading is enabled, the system automatically loads CMPT softwarefrom the BAM after the CMPT is installed.

l If automatic software loading is disabled, run the DLD CBTSSW command to load CMPTsoftware.


Run the UBL RES command to unblock all carriers of the BTS.

Step 7 Verify that the CMPT is working properly based on the indicator description.




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NOTECheck link status before replacing the CMPT. Run the DSP CBTSLNKSTAT command to verify thatstatus of the link in use is Good.

----End

Follow-up Procedure1. Record the version, board name, slot number, and site name of the faulty board.2. Check whether there is visible physical damage on the board, for example, mechanical parts




2.1.3 Replacing an HCPM or HECMAn HCPM or HECM processes baseband signals of the BTS system. Replacing the HCPM orHECM interrupts its services.

Prerequisite

The following tools and materials are available: ESD wrist strap, ESD gloves, Phillipsscrewdriver, and ESD box or bag.

Context

CAUTIONThe impacts of replacing the HCPM or HECM are as follows:l If no cable is connected to the faulty board, replacing the board interrupts its services.l If the faulty board is connected to an RF unit, replacing the board interrupts its services

and all carriers of the RF unit.

Procedure



Step 2 Block the faulty board.1. Run the BLK CBTSCPM command to block the faulty board. Set Block Type to IDLE.2. Run the DSP CBTSBRDSTAT command to check whether all carriers are blocked. If they

are blocked, go to the next step.




2-7


2. If cables were connected to the faulty board, label the cables before removing them.

3. Loosen the screws on the panel and remove the faulty board.



1. Take out a new board. Confirm that the board is intact.

2. Install the new board and tighten the screws on the panel.

3. If cables were disconnected from the faulty board, connect those cables to the new boardaccording to the labels.


l If automatic software loading is enabled, the system automatically loads HCPM or HECMsoftware from the BAM after the HCPM or HECM is installed.

l If automatic software loading is disabled, run the DLD CBTSSW command to load HCPMor HECM software.

Step 6 Unblock the board.

Run the UBL CBTSCPM to unblock the new HCPM or HECM.

Step 7 Verify that the HCPM or HECM is working properly based on the indicator description.

----End

Follow-up Procedure1. Record the version, board name, slot number, and site name of the faulty board.

2. Check whether there is visible physical damage on the board, for example, mechanical partsor plug-ins are distorted, pins are bent or missing, or the board is burnt.

3. Record the information about the fault location process, including the cause of the fault,fault symptoms, alarm name, status of indicators on the board panel, and detailedprocedures for identifying and clearing the fault on site.


2.1.4 Replacing a UPEUA UPEU is the power module of the BBU3900. It supplies power to boards in the BBU3900.When only one UPEU is configured in the BBU3900, replacing the UPEU interrupts BTSservices.

Prerequisite





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Context

A maximum of two UPEUs in active/standby mode can be configured in the BBU3900. Youare advised to configure two UPEUs in the BBU3900 to ensure normal operating of theBBU3900.

CAUTIONThe impacts of replacing the UPEU are as follows:l When only one UPEU is configured in the BBU3900, replacing the UPEU interrupts BTS

services.l When two UPEUs are configured in the BBU3900, replacing the UPEU does not interrupt

BTS services.

NOTE

l The following operations can be performed only when two UPEUs are configured in the BBU3900.

l If only one UPEU is configured in the BBU3900, block all carriers of the BTS before replacing thefaulty UPEU.

Procedure

Step 1 Remove the faulty UPEU.1. Wear an ESD wrist strap and ESD gloves, and then insert the ground terminal into the ESD

port on the cabinet.2. Set the switch on the UPEU to OFF.3. If cables are connected to the faulty UPEU, label the cables before removing them.4. Loosen the two captive screws on the UPEU and remove the UPEU.5. Place the faulty board in an ESD box or bag.

Step 2 Install a new UPEU.1. Take out a new UPEU. Confirm that the new UPEU is intact.2. Install the new UPEU and tighten two captive screws on the UPEU.3. If cables are connected to the faulty UPEU, connect the cables to the new UPEU according

to the labels.4. Set the switch on the UPEU to ON.

Step 3 Verify that the UPEU is running properly.

The UPEU is running properly if the RUN indicator is on.

----End


or plug-ins are distorted, pins are bent or missing, or the board is burnt.



2-9



2.1.5 Replacing a UTRPA UTRP transmits data between the BBU3900 and the BSC. Replacing the UTRP interrupts itstransmission services.

Prerequisite


Context

CAUTIONReplacing the UTRP interrupts its transmission services.

Procedure



Step 2 Block carriers.1. Run the BLK RES command to block all carriers of the BTS. Set Priority to Low.2. Run the DSP RES command to check whether all carriers of the BTS are blocked. If they


Step 3 Remove the faulty board.1. Wear an ESD wrist strap and ESD gloves, and then insert the ground terminal into the ESD

port on the cabinet.2. If cables are connected to the faulty UTRP, label the cables before removing them.3. Loosen the screws on the panel and remove the faulty board.4. Place the faulty board in an ESD box or bag.

Step 4 Install a new board.1. Take out a new UTRP. Confirm that the new UTRP is intact.2. Install the new UTRP and tighten the screws on the panel.3. If cables are connected to the faulty UTRP, connect the cables to the new UTRP based on

the labels.





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l If automatic software loading is enabled, the system automatically loads UTRP softwarefrom the BAM after the UTRP is installed.

l If automatic software loading is disabled, run the DLD CBTSSW command to load UTRPsoftware.



Step 7 Verify that the UTRP is working properly based on the indicator description.

NOTECheck link status before replacing the UTRP. Run the DSP CBTSLNKSTAT command to verify thatstatus of the link in use is Good.

----End





2.1.6 Replacing a UELP or UFLPA UELP or UFLP is the surge protection unit for BBU3900 trunk cables. It provides surgeprotection for E1/T1 and FE links. Replacing the board interrupts its transmission services.


Context

CAUTIONReplacing the UELP or UFLP interrupts its transmission services.

Procedure






2-11

1. Run the BLK RES command to block all carriers of the BTS. Set Priority to Low.2. Run the DSP RES command to check whether all carriers of the BTS are blocked. If they



port on the cabinet.2. Label the cables connected to the faulty board before removing them.3. Loosen the screws on the panel and remove the faulty board.4. Place the faulty board in an ESD box or bag.

Step 4 Install a new board.1. Take out a new board. Confirm that the board is intact.2. Set the DIP switch on the new board as the DIP switch on the faulty board.

Only the UELP has a DIP switch.3. Install the new board and tighten the screws on the panel.4. Connect the cables to the new board according to the labels.



Step 6 Query the status of links carried by the board and verify that the board is running properly.

NOTECheck link status before replacing the UELP or UFLP. Run the DSP CBTSLNKSTAT command to verifythat status of the link in use is Good.

----End





2.1.7 Replacing a UEIUA UEIU is the environment interface unit. It transmits information about environmentmonitoring equipment and alarms to the CMPT. Replacing the UEIU does not affect BTSservices.

Prerequisite





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Procedure




port on the cabinet.2. Label the cables connected to the faulty board before removing them.3. Loosen the screws on the panel and remove the faulty board.4. Place the faulty board in an ESD box or bag.

Step 3 Install a new board.1. Take out a new board. Confirm that the board is intact.2. Install a new board.3. Connect the cables to the new board according to the labels.

Step 4 If no alarm is generated, verify that the board is working properly based on the indicatordescription.

----End





2.1.8 Replacing a UBRIA UBRI is a baseband radio interface unit. It implements the functions of PN sharing, 1Xresource pool, and convergence and distribution of baseband data.


Context

CAUTIONReplacing the UBRI interrupts the services carried on it.



2-13

ProcedureStep 1 Determine the position of the faulty board.


Step 2 Block carriers.1. Run the BLK RES command to block all carriers of the BTS. Set Priority to Low.2. Run the DSP RES command to check whether all carriers of the BTS are blocked. If they



port on the cabinet.2. If cables were connected to the faulty board, label the cables before removing them.3. Loosen the screws on the panel and remove the faulty board.4. Place the faulty board in an ESD box or bag.

Step 4 Install a new board.1. Take out a new board. Confirm that the board is intact.2. Install the new board and tighten the screws on the panel.3. If cables were disconnected from the faulty board, connect those cables to the new board

according to the labels.

Step 5 Load board software.l If automatic software loading is enabled, the system automatically loads UBRI software from

the BAM after the UBRI is installed.l If automatic software loading is disabled, run the DLD CBTSSW command to load UBRI

software.



Step 7 Verify that the board is working properly based on the indicator description.

----End





2.1.9 Replacing a USCUA USCU is the extension satellite card clock unit of the BBU3900. It provides clock signalssuch as BITS, GPS, and RGPS clock signals. Replacing the USCU does not affect services.




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Prerequisite


Procedure





2. Label the cables connected to the faulty board before removing them.

3. Loosen the screws on the panel and remove the faulty board.



1. Take out a new board. Confirm that the board is intact.

2. Install the new board and tighten the screws on the panel.

3. Connect the cables to the new board according to the labels.

Step 4 Verify that the USCU is working properly based on the description of indicators.

----End





2.1.10 Replacing a FANThe FAN is the fan unit of the BBU3900. It dissipates heat from the BBU3900. Replacing theFAN does not affect BTS boards and services if the replacement is completed within 3 minutes.

Prerequisite




2-15

ContextThe FAN dissipates heat from the BBU3900. The temperature inside the BBU3900 rises afterthe FAN is replaced, but BTS boards and services are not affected if the replacement is completedwithin 3 minutes.

ProcedureStep 1 Remove the faulty FAN.


2. Loosen the two captive screws on the FAN and remove the FAN.3. Place the faulty board in an ESD box or bag.

Step 2 Install a new FAN.1. Take out a new FAN. Confirm that the new FAN is intact.2. Install the new FAN and tighten two captive screws on the FAN.

Step 3 Verify that the FAN is running properly.

The FAN is running properly if the indicator is green and blinks at 0.5 Hz.

----End





2.1.11 Replacing an Optical ModuleA swappable optical module supports optical fiber transmission. Replacing the swappableoptical module interrupts services carried over the optical fiber.

PrerequisiteThe following materials are available: electrostatic discharge (ESD) wrist strap, ESD gloves,and ESD box or bag.

ContextThe swappable optical module is used for remote connection or cascading connection of RRUs.The swappable optical module is inserted into the SFP port on the HCPM or HECM. This enablesthe optical fiber to connect the HCPM or HECM and the RRU.

The swappable optical module is inserted into the FE1 port on the CMPT (4 E1/T1). This enablesthe FE optical fiber to connect the CMPT (4 E1/T1) and the BSC.




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The procedure of replacing the swappable optical module connected to the SFP port on theHCPM or HECM is used as an example.

Procedure

Step 1 Mark the position where the swappable optical module is to be replaced.

Label the position before replacing the swappable optical module.


1. Run the BLK RES command to block all carriers of the RRU connected to the SFP port.Set Priority to Low.

2. Run the DSP RES command to check whether all carriers are blocked. If they are blocked,go to the next step.

Step 3 Remove the swappable optical module.

1. Remove the optical fiber from the optical module.

2. Install a protective cap to the optical fiber removed and label the optical fiber.

3. Remove the optical module.

Step 4 Install a new swappable optical module.

1. Take out a new swappable optical module. Ensure that it is intact and the model is the sameas that of the removed module.

2. Insert the new optical module into the SFP port.

3. Insert the optical fiber into the new optical module.


Run the UBL RES command to unblock all carriers of the RRU connected to the SFP port.

Step 6 Ensure that the new optical module works properly.

When the optical module is working properly, the status of the indicators on the port is as follows:

l RX: on

l TX: on

----End







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2.1.12 Replacing a Power CableA power cable connects the power port on the BBU3900 and the external power supply to feedthe external power supply into the BBU3900. You must power off the BBU3900 before replacingthe power cable.


Context

CAUTIONReplacing the power cable interrupts all BTS services.

Procedure

Step 1 Cut a new power cable as the same length as the faulty power cable.

Step 2 Set the BBU3900 power switch to OFF.

Step 3 Loosen the screws on the 3V3 power connector at the end of the power cable using a Phillipsscrewdriver, and then remove the 3V3 power connector from the BBU3900.

Step 4 Install the 3V3 power connector to the power port on the BBU3900, and then tighten the screwson the 3V3 power connector.

Step 5 Route the new power cable along the original path of the faulty power cable.

Step 6 Strip the sheath off the power cable for adding OT terminals.

Step 7 Disconnect the faulty power cable and add OT terminals to the new power cable.

Step 8 Set the BBU3900 power switch to ON.

----End

Follow-up ProcedureDiscard the faulty power cable properly and clean the site.

2.1.13 Replacing an E1/T1 CableAn E1/T1 cable functions as the physical carrier of service exchanges between the BBU3900and the BSC. Replacing the E1/T1 cable interrupts services carried by the E1/T1 cable.





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Context

CAUTIONReplacing the E1/T1 cable interrupts services carried by the E1/T1 cable.

Procedure

Step 1 Determine the position of the faulty E1/T1 cable.

Attach a label close to the installation position before replacing the faulty E1/T1 cable.

Step 2 Block carriers.1. Run the BLK RES command to block all carriers carried by the faulty E1/T1 cable. Set

Priority to Low.2. Run the DSP RES command to check whether all carriers are blocked. If they are blocked,


Step 3 Disconnect the faulty E1/T1 cable.1. Disconnect the E1/T1 cable from the BBU3900.2. Disconnect the faulty E1/T1 cable from the outdoor transmission device.3. Coil up the faulty E1/T1 cable and place it into a plastic bag.

Step 4 Install a new E1/T1 cable.1. Take out a new E1/T1 cable. Verify that the new cable is intact and models of the new cable

and faulty cable are the same.2. Connect the new E1/T1 cable to the BBU3900 where the faulty E1/T1 cable was connected.3. Route the new E1/T1 cable to the outdoor transmission device following the route of the

faulty E1/T1 cable.4. Connect the new E1/T1 cable to the outdoor transmission device.


Run the UBL RES command to unblock all carriers carried by the E1/T1 cable.

Step 6 Verify that the E1/T1 cable is working properly.

Run the DSP CBTSLNKSTAT command to verify that status of the E1/T1 link in use isGood.

----End

Follow-up ProcedureDiscard the faulty cable properly and clean the site.

2.1.14 Replacing an E1/T1 Surge Protection Transfer CableAn E1/T1 surge protection transfer cable connects the CMPT or UTRP and the UELP. Itfunctions as the physical carrier of signal exchanges between the BBU3900 and the UELP.Replacing the E1/T1 surge protection transfer cable interrupts BTS transmission services.



2-19

Prerequisite


Context

CAUTIONReplacing the E1/T1 surge protection transfer cable interrupts BTS transmission services.

Procedure

Step 1 Determine the position of the faulty E1/T1 surge protection transfer cable.

Attach a label close to the installation position before replacing the faulty E1/T1 surge protectiontransfer cable.

Step 2 Block carriers.1. Run the BLK RES command to block all carriers carried by the faulty E1/T1 surge

protection transfer cable. Set Priority to Low.2. Run the DSP RES command to check whether all carriers are blocked. If they are blocked,


Step 3 Disconnect the faulty E1/T1 surge protection transfer cable.1. Disconnect the faulty E1/T1 surge protection transfer cable from the CMPT or UTRP.2. Disconnect the faulty E1/T1 surge protection transfer cable from the UELP.3. Coil up the faulty E1/T1 surge protection transfer cable and place it in a plastic bag.

Step 4 Install a new E1/T1 surge protection transfer cable.1. Take out a new E1/T1 surge protection transfer cable. Verify that the new cable is intact

and models of the new cable and faulty cable are the same.2. Connect the new E1/T1 surge protection transfer cable to the positions where the faulty

E1/T1 surge protection transfer cable was connected.


Run the UBL RES command to unblock all carriers carried by the E1/T1 surge protectiontransfer cable.

Step 6 Verify that the E1/T1 surge protection transfer cable is working properly.

Run the DSP CBTSLNKSTAT command to verify that status of the E1/T1 link in use isGood.

----End





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2.1.15 Replacing an FE CableAn FE cable functions as the physical carrier of service exchange between the BBU3900 andthe BSC. Replacing the FE cable interrupts services carried by the FE cable.


Context

CAUTIONReplacing the FE cable interrupts services carried by the FE cable.

ProcedureStep 1 Determine the position of the faulty FE cable.

Attach a label close to the installation position before replacing the faulty FE cable.

Step 2 Block carriers.1. Run the BLK RES command to block all carriers carried by the faulty FE cable. Set

Priority to Low.2. Run the DSP RES command to check whether all carriers are blocked. If they are blocked,


Step 3 Disconnect the faulty FE cable.1. Disconnect the faulty FE cable from the BBU3900.2. Disconnect the faulty FE cable from the outdoor transmission device.3. Coil up the faulty FE cable and place it in a plastic bag.

Step 4 Install a new FE cable.1. Take out a new FE cable. Verify that the new cable is intact and models of the new cable

and faulty cable are the same.2. Connect the new FE cable to the BBU3900 where the faulty FE cable was connected.3. Route the new FE cable to the outdoor transmission device following the route of the faulty

FE cable.4. Connect the new FE cable to the outdoor transmission device.


Run the UBL RES command to unblock all carriers carried by the FE cable.

Step 6 Verify that the FE cable is working properly.

Run the DSP CBTSFEPORTINFO command to verify that status of the FE link in use isGood.

----End



2-21


2.1.16 Replacing an FE Surge Protection Transfer CableAn FE surge protection transfer cable connects the CMPT and the UFLP. It functions as thephysical carrier of signal exchanges between the BBU3900 and the UFLP. Replacing the FEsurge protection transfer cable interrupts BTS transmission services.

Prerequisite


Context

CAUTIONReplacing the FE surge protection transfer cable interrupts BTS transmission services.

Procedure

Step 1 Determine the position of the faulty FE surge protection transfer cable.

Attach a label close to the installation position before replacing the faulty FE surge protectiontransfer cable.

Step 2 Block carriers.1. Run the BLK RES command to block all carriers carried by the faulty FE surge protection

transfer cable. Set Priority to Low.2. Run the DSP RES command to check whether all carriers are blocked. If they are blocked,


Step 3 Disconnect the faulty FE surge protection transfer cable.1. Disconnect the faulty FE surge protection transfer cable from the CMPT.2. Disconnect the faulty FE surge protection transfer cable from the UFLP.3. Coil up the faulty FE surge protection transfer cable and place it in a plastic bag.

Step 4 Install a new FE surge protection transfer cable.1. Take out a new FE surge protection transfer cable. Verify that the new cable is intact and

models of the new cable and faulty cable are the same.2. Connect the new FE surge protection transfer cable to the positions where the faulty FE

surge protection transfer cable was connected.


Run the UBL RES command to unblock all carriers carried by the FE surge protection transfercable.




Issue 01 (2011-04-27)

Step 6 Verify that the FE surge protection transfer cable is working properly.

Run the DSP CBTSFEPORTINFO command to verify that status of the FE link in use isGood.

----End


2.1.17 Replacing a CPRI CableA CPRI cable connects the BBU3900 and the RRU to transmit baseband signals. Replacing theCPRI cable interrupts services carried by the CPRI cable.


Context

CAUTIONReplacing the CPRI cable interrupts services carried by the CPRI cable.

Procedure

Step 1 Determine the position of the faulty CPRI cable.

Attach a label close to the installation position before replacing the faulty CPRI cable.

Step 2 Block carriers.1. Run the BLK RES command to block all carriers of the RRU where the CPRI cable is

connected. Set Priority to Low.2. Run the DSP RES command to check whether all carriers are blocked. If they are blocked,


Step 3 Disconnect the faulty CPRI cable.1. Remove the CPRI cable from the optical module and install a protective cap to the cable.2. Coil up the faulty cable and place it in a plastic bag.

Step 4 Install a new CPRI cable.1. Take out a new cable. Verify that the new cable is intact and models of the new cable and

faulty cable are the same.2. Connect the new cable to the positions where the faulty cable is connected following the

route of the faulty cable.




2-23

Run the UBL RES command to unblock all carriers of the RRU where the CPRI cable isconnected.

Step 6 Verify that the CPRI cable is working properly based on the description of HCPM, HECM, orUBRI indicators.

----End


2.1.18 Replacing an Alarm CableAn alarm cable connects the UPEU and an external alarm device to monitor the externalenvironment. Replacing the alarm cable interrupts the external monitoring function of the BTS.

Prerequisite


Context

Both ends of the alarm cable are terminated with RJ45 connectors. During onsite installation,add an OT terminal to one end of the cable as required.

Procedure

Step 1 Determine the position of the faulty alarm cable.

Attach a label close to the installation position before replacing the faulty alarm cable.

Step 2 Disconnect the faulty alarm cable.1. Disconnect the faulty alarm cable from the UPEU.2. Disconnect the faulty alarm cable from the external alarm device.3. Coil up the faulty alarm cable and place it in a plastic bag.

Step 3 Install a new alarm cable.1. Take out a new alarm cable. Confirm that the new cable is intact and models of the new

cable and faulty cable are the same.2. Connect the new alarm cable to the positions where the faulty alarm cable was connected.

----End


2.1.19 Replacing a Clock Signal CableReplacing a clock signal cable affects BTS clock signals.




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ProcedureStep 1 Determine the position of the faulty clock signal cable.

Attach a label close to the installation position before replacing the faulty clock signal cable.

Step 2 Disconnect the faulty clock signal cable.1. Loosen both ends of the faulty clock signal cable and remove it.2. Coil up the faulty clock signal cable and place it in a plastic bag.

Step 3 Install a new clock signal cable.1. Take out a new clock signal cable. Confirm that the new cable is intact and models of the

new cable and faulty cable are the same.2. Connect the new alarm cable to the positions where the faulty clock signal cable was

connected.

----End


2.2 Replacing the Monitoring Transfer BoardThis describes how to replace a faulty monitoring transfer board.

PrerequisiteThe following tools and materials are available: the ESD wrist strap or gloves, Phillipsscrewdriver, ESD box or bag, and key to the cabinet door.

ProcedureStep 1 Disconnect the cables on the PMU interface board and record the connection positions.

Step 2 Remove the cover of the monitoring transfer board.

Step 3 Disconnect cables from the monitoring transfer board and record the original positions of thecables.

Step 4 Use a Phillips screwdriver to unscrew the monitoring transfer board, and remove the board.

Step 5 Install a new monitoring transfer board and tighten the screws on it.

Step 6 Reconnect the cables according to the recorded connection positions.

Step 7 Fix the cover.

Step 8 Reconnect the cables on the PMU according to the recorded positions.

----End



2-25

Follow-up Procedure1. Record the software version, board name, slot number, and site name of the faulty board.




2.3 Replacing the EMUAThis describes how to replace a faulty EMUA.

Prerequisite

The following tools and materials are available: the ESD wrist strap or gloves, Phillipsscrewdriver, ESD box or bag, and key to the cabinet door.

Procedure

Step 1 Disconnect cables of the EMUA and record the positions of the cables.

Step 2 Use a Phillips screwdriver to unscrew the EMUA.

Step 3 Replace the faulty EMUA with a new one, and screw up the new EMUA.The DIP switch settings of the new EMUA must be the same as those of the faulty EMUA.

Step 4 Reconnect the cables according to the recorded connection positions.

----End

Follow-up Procedure1. Record the software version, board name, slot number, and site name of the faulty board.




2.4 Replacing the Storage BatteriesThis describes how to replace an entire set of faulty storage batteries.




Issue 01 (2011-04-27)


Procedure

Step 1 Turn off the BATT switch on the AC/DC power module.

Step 2 Use a Phillips screwdriver to unscrew and remove the cover of the storage batteries. See Figure2-1.

Figure 2-1 Removing the cover of the storage batteries

Step 3 Disconnect power cables at both ends of the storage batteries and remove the copper bars thatconnect the storage batteries.

Step 4 Replace the faulty storage batteries with new ones. See Figure 2-2.

Figure 2-2 Installing the storage batteries

Step 5 Fix the interconnection copper bars and temperature sensor. Connect power cables to both endsof the storage batteries, and ensure that the polarities are correctly connected. See Figure 2-3.



2-27

Figure 2-3 Power cable connections of built-in storage batteries

Step 6 Use a Phillips screwdriver to fix the cover of the storage batteries.

Step 7 Turn on the BATT switch of the AC/DC power module.

----End

Follow-up Procedure1. Record the software version, board name, slot number, and site name of the faulty board.2. Check whether there is visible physical damage on the board, for example, mechanical parts




2.5 Replacing the DCDUThis describes how to replace the faulty DCDU.

PrerequisiteThe following tools and materials are available: the ESD wrist strap or gloves, Phillipsscrewdriver, ESD box or bag, key to the cabinet door, tie wraps, and cable cutter.

Procedure

Step 1 Record information of the carriers.




Issue 01 (2011-04-27)

Run the DSP CBTSSECTORCARRIERINFO command to query the cell IDs, sector IDs, andcarrier IDs.

Step 2 Block the carriers.1. Run the BLK RES command to block all carriers of the BTS. Set the priority to "Low".2. Run the DSP RES command to query whether the carriers are blocked. If the carriers are

blocked, proceed with the next step.

Step 3 Power off the BTS.1. Set the power switch to OFF.

Set the load MCBs (SW1 and SW2) controlling the BBU3900 to OFF.2. Switch off the power supply.

Step 4 Remove the BBU3900 by referring to 2.1.1 Replacing a BBU3900 Case.

Step 5 Remove the cables from the DCDU by using a cable cutter. Record the connection positions ofthe cables.

Step 6 Unscrew and remove the DCDU.

Step 7 Install a new DCDU.

Step 8 Reconnect the cables to the DCDU according to the recorded connection positions.

Step 9 Install the BBU3900 and connect the cables by referring to 2.1.1 Replacing a BBU3900Case.

Step 10 Fix the DCDU and BBU by tightening the panel screws.

Step 11 Power on the BBU.1. Switch on the power supply.2. Set the power switch to ON.

Set the load MCB controlling the BBU3900 to ON.

Step 12 Unblock the carriers.

Run the UBL RES command to unblock the carriers.

Step 13 Check and ensure that the new BBU3900 and DCDU are functional.l The DCDU is functional if the BBU3900 and RF module can be powered on normally.l Check the indicators on the BBU3900 and ensure that the board is working properly by

referring to BBU3900 User Guide.

----End

Follow-up ProcedureAfter the replacement, proceed with the following steps.






2-29


2.6 Replacing the Heat ExchangerWhen the head exchanger on the door of the cabinet is faulty, you need to replace it. When thecontrol panel on the heat exchanger is faulty (other parts of the heat exchanger are not faultyand you need not replace the entire heat exchanger), replace the control panel.

PrerequisiteThe following tools and materials are available: the ESD wrist strap or gloves, Phillipsscrewdriver, ESD box or bag, key to the cabinet door, tie wraps, and cable cutter.

Procedurel Replacing the Heat Exchanger

1. Set the load MCB (SW3) controlling the DCDU to OFF.2. Disconnect the cables from the control panel of the heat exchanger. Record the

connection positions of the cables.3. Remove the wind baffle below the heat exchanger.4. Use a Phillips screwdriver to loosen the 16 screws around the heat exchanger.5. Remove the faulty heat exchanger from the front door.6. Apply silica gel to the front door at the positions shown in Figure 2-4.

Figure 2-4 Positions where silica gel is applied on the front door of the cabinet (unit:mm)




Issue 01 (2011-04-27)

7. Fix the new heat exchanger.8. Fix the wind baffle below the heat exchanger.9. Reconnect the cables on the control panel of the heat exchanger according to the

recorded positions.10. Set the load MCB (SW3) controlling the DCDU to ON.

l Replacing the Control Panel1. Disconnect the cables from the control panel of the heat exchanger. Record the

connection positions of the cables.2. Use a Phillips screwdriver to remove the four screws around the control panel.3. Remove the faulty control panel and install the new control panel.4. Fasten four screws around the new control panel.5. Reconnect the cables on the control panel according to the recorded positions.

----End

Follow-up ProcedureAfter the replacement, proceed with the following steps.





2.7 Replacing the STDMThis describes how to replace the Standalone Transceiver Duplex Filter Module (STDM).

PrerequisiteThe following tools and materials are available: the ESD wrist strap, Phillips screwdriver,adjustable wrench, ESD box or bag and keys to the front panel and cabinet door.

Procedure

Step 1 Record information of the carriers.Run the DSP CBTSSECTORCARRIERINFO command to query the cell IDs, sector IDs, andcarrier IDs.



Step 3 Power off the BTS.



2-31

1. Set the power switch to OFF.

l Set the MCB with the silkscreen "RF+FAN" on the DC PDB (-48 V)of BTS3606CE(-48 V) to OFF.

l Set the MCB with the silkscreen "STDM+SPAM+FAN" on the DC PDB (+24V)ofBTS3606CE (+24V) to OFF.

l Set the switch corresponding to the DC PDB of the BTS3606AC to OFF.

2. Switch off the power supply.

Step 4 Remove the faulty STDM.

1. Removing the cables of the STDM and attach temporary labels to the removed cables.

2. Loosen the screws on the STDM.

3. Remove the STDM.

Step 5 Install the new STDM.

1. Install the new STDM.

2. Fasten the screws on the STDM.

3. Connect the cables of STDM according to the temporary labels.

Step 6 Power on the BTS.

1. Switch on the power supply.

2. Set the power switch to ON.

l Set the MCB with the silkscreen "RF+FAN" on the DC PDB (-48 V)of BTS3606CE(-48 V) to ON.

l Set the MCB with the silkscreen "STDM+SPAM+FAN" on the DC PDB (+24V)ofBTS3606CE (+24V) to ON.

l Set the switch corresponding to the DC PDB of the BTS3606AC to ON.



Step 8 Ensure that the new STDM functions properly.

The Run indicator of the STDM panel blinks at o.5 Hz.

----End

Follow-up ProcedureAfter replacing the FAN, perform the following steps:

1. Record the version, board name, slot number, and site name of the faulty board.







Issue 01 (2011-04-27)

2.8 Replacing the SPAMThis topic describes how to replace the Standalone Power Amplifier Module (SPAM). Whenthe SPAM is faulty, replace it.

PrerequisiteThe following tools and materials are available: the ESD wrist strap, Phillips screwdriver,adjustable wrench, ESD box or bag and key to the cabinet door.

Procedure




Step 3 Power off the BTS.1. Set the power switch to OFF.

l Set the MCB with the silkscreen "RF+FAN" on the DC PDB (-48 V)of BTS3606CE(-48 V) to OFF.


l Set the switch corresponding to the DC PDB of the BTS3606AC to OFF.2. Switch off the power supply.

Step 4 Remove the faulty SPAM.1. Removing the cables of the SPAM and attach temporary labels to the removed cables.2. Loosen the screws on the SPAM.3. Removing the SPAM

Step 5 Install the new SPAM.1. Install the new SPAM.2. Fasten the screws on the SPAM.3. Install the cables according to the temporary labels.

Step 6 Power on the BTS.1. Switch on the power supply.2. Set the power switch to ON.

l Set the MCB with the silkscreen "RF+FAN" on the DC PDB (-48 V)of BTS3606CE(-48 V) to ON.




2-33




Step 8 Ensure that the new SPAM functions properly.

RUN indicator of the SPAM (green) blinks at 0.5 Hz.

----End






2.9 Replacing the SLPUThis describes how to replace the faulty SLPU.


Procedure

Step 1 Remove the faulty SLPU.1. Removing the cables of the SLPU and attach temporary labels to the removed cables.2. Loosen the screws on the SLPU.3. Remove the SLPU.

Step 2 Install a new SLPU.1. Install a new SLPU.2. Fasten the screws on the SLPU.3. Connect the cables of SLPU according to the temporary labels.

----End

Follow-up ProcedureAfter replacing the SLPU, perform the following steps:





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2.10 Replacing the PSUAC/DC

This describes how to replace the faulty PSUAC/DC.

Prerequisite

The following tools and materials are available: the ESD wrist strap, flat-head screwdriver,Phillips screwdriver, ESD box or bag, and key to the cabinet door.

Procedure

Step 1 Remove the faulty PSUAC/DC.

1. Remove the screws on the handle of the PSUAC/DC.

2. Removing the PSUAC/DC

Step 2 Install the new PSUAC/DC.

1. Installing the PSUAC/DC

2. Fasten the screws on the handle of the PSUAC/DC.

----End

Follow-up ProcedureAfter the replacement, perform the following steps:





2.11 Replacing the PMUThis describes how to replace the faulty PMU.



2-35

PrerequisiteThe following tools and materials are available: the ESD wrist strap, flat-head screwdriver,Phillips screwdriver, ESD box or bag, and key to the cabinet door.

Procedure

Step 1 Remove the faulty PMU.1. Removing the cables of the PMU and attach temporary labels to the removed cables.2. Remove the screws on the handle of the PMU.3. Remove the PMU.

Step 2 Install the new PMU.1. Install the new PMU.2. Fasten the screws on the handle of the PMU.3. Connect the cables of PUM according to the temporary labels.

----End






2.12 Replacing the FANThis describes how to replace the faulty FAN. The FAN mentioned in this topic is the FAN ofthe carrier, rather than the FAN of the BBU.


Procedure


Step 2 Block the carriers.1. Run the BLK RES command to block all carriers of the BTS. Set the priority to "Low".




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2. Run the DSP RES command to query whether the carriers are blocked. If the carriers areblocked, proceed with the next step.

Step 3 Power off the BTS.

Set the power switch to OFF.

l Set the MCB with the silkscreen "RF+FAN" on the DC PDB (-48 V)of BTS3606CE (-48 V)to OFF.


l Set the switch corresponding to the DC PDB of the BTS3606AC to OFF.

Step 4 Remove the faulty FAN.1. Remove the cables of the FAN.2. Loosen the screws of the FAN.3. Remove the FAN.

Step 5 Install the new FAN.1. Install the new FAN.2. Fasten the screws of the FAN.3. Install the cables of the FAN.

Step 6 Power on the BTS.

Set the power switch to ON.

l Set the MCB with the silkscreen "RF+FAN" on the DC PDB (-48 V)of BTS3606CE (-48 V)to ON.





Step 8 Ensure that the new FAN functions properly.

When the FAN panel is normal, the indicator (green) blinks at 0.5 Hz.

----End







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2.13 Replacing the PDUThis section describes how to replace the PDU when the BTS3606CE PDU is faulty.

PrerequisiteThe following tools and materials are available: the ESD wrist strap and ESD gloves, Phillipsscrewdriver, ESD box or bag, cabinet key, tie wrap, and wire nipper.

ContextFigure 2-5 shows the BTS3606CE cabinet.

Figure 2-5 Appearance of the BTS3606CE cabinet




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Procedure

Step 1 Record the information of the carriers.Run the DSP CBTSSECTORCARRIERINFO command to query the cell IDs, sector IDs, andcarrier IDs.

Step 2 Block the carriers.1. Run the BLK RES command to block all the carriers of the BTS. Set priority to Low.2. Run the DSP RES command to check whether the status of all the carriers of the BTS is

Blocked. If the status is Blocked, go to the next step.

Step 3 Power off the PDU.1. Set the power supply switch to OFF.

Set the load MCB of the BBU3900 to OFF.2. Switch off the power supply.

Step 4 Remove the cables on the PDU using a wire nipper. Mark the cable positions.

Step 5 Remove the screws in the PDU and then the PDU.

Step 6 Install a new PDU.

Step 7 Connect the cables to the PDU according to the marks.

Step 8 Fix the PDU and the BBU using the screws.

Step 9 Power on the PDU.1. Switch on the power supply.2. Set the power supply switch to ON.

Set the load MCB of the BBU3900 to ON.

Step 10 Unblock the carriers.Run the UBL RES command to unblock the carriers.

Step 11 Ensure that the new PDU functions properly.If the power supply for the BBU3900 and the RF module is normal, you can infer that the PDUworks properly.

----End

Follow-up ProcedureDo as follows after the PDU is replaced:







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2.14 Replacing the Surge Protector of the Satellite AntennaSystem

This describes how to replace the faulty surge protector of the BTS satellite antenna system. Thesurge protector of the satellite antenna system provides surge protection for GPS clock signalsentering the BTS. If the faulty surge protector is replaced within a short period, GPS clock signalsare disrupted for a moment, but services of the BTS are not affected.

PrerequisiteThe following tools and materials are available: the ESD wrist strap or gloves, Phillipsscrewdriver, adjustable wrench, and the ESD box or bag.

ContextThe surge protector can effectively discharge the ultra-high voltage and current in the GPSfeeders caused by lightning.

If any faulty surge protector is replaced within a short period, the GPS clock signals of the BTSare interrupted, but the services of the BTS are not interrupted.

Procedure

Step 1 Remove the faulty surge protector.1. Label the cables that are connected to the ports of the surge protector, and then remove the

cables.2. Unscrew the surge protector and then remove it.3. Place the removed surge protector in an ESD box/bag.

Step 2 Install a new surge protector.1. Take the new surge protector out of the ESD box. Ensure that the new surge protector is

not damaged and that the types of the new and the removed surge protectors are the same.2. Install the new surge protector in the position where the faulty surge protector is located.3. According to the labels, insert the cables into the ports of the new surge protector.

Step 3 Ensure that the new surge protector functions properly.

Check whether the new surge protector functions properly through the following methods:

l Run the DSP CBTSBRDSPECSTAT command to check whether more than four satellitesare locked.

l Alarms related to the satellite block are not generated on the Alarm Management System.

----End

Follow-up ProcedureAfter the replacement, do as follows:





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3 Reference Information

About This Chapter

This describes reference information of site maintenance.

3.1 Powering On and Powering Off the BTSWhen maintaining the BTS, you may need to power on and off the BTS. The operations ofpowering on and off the BTS should comply with associated regulations and requirements.

BTS3606CE BTS3606AC CDMASite Maintenance Guide 3 Reference Information


3-1

3.1 Powering On and Powering Off the BTSWhen maintaining the BTS, you may need to power on and off the BTS. The operations ofpowering on and off the BTS should comply with associated regulations and requirements.

3.1.1 Powering On the BTSThis describes how to power on the BTS3606CE and BTS3606AC.

3.1.2 Powering Off the BTSThis describes two power-off modes of the BTS, that is, regular power-off and emergency power-off.

3.1.1 Powering On the BTSThis describes how to power on the BTS3606CE and BTS3606AC.

Prerequisitel Set all MCBs of the BTS3606CE and the BTS3606AC to OFF.l Insert all boards of BTS3606CE/BTS3606AC into the slots on the backplane.

ContextFigure 3-1 and Figure 3-2 shows the PDB of the BTS3606CE.

Figure 3-1 PDB of the BTS3606CE (-48 V cabinet)

3 Reference InformationBTS3606CE BTS3606AC CDMA



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Figure 3-2 PDB of the BTS3606CE (+24 V cabinet)

Figure 3-3 and Figure 3-4 shows the PDB of the BTS3606AC.

Figure 3-3 PDB of the BTS3606AC (AC PDB)



3-3

Figure 3-4 PDB of the BTS3606AC (DC PDB)

Procedurel BTS3606CE


2. Set all MCBs of the PDB to ON.

3. Set the switch on the UPEU panel of the BBU to ON.

4. Check the indicators of boards and modules.

When the boards and modules are normal after power-on, the status of indicators isas follows:

– UPEU panel of the BBU: the indicator (green)is ON

– FAN panel of the BBU: the indicator (green) is blinking

– Boards inside the BBU: the RUN indicator (green) is blinking

– FAN panel: the indicator (green) is blinking

– STDM and SPAM panels: the RUN indicator (green) is blinking

l BTS3606AC


2. Set the MCB of the PSU of the AC PDB AC/DC to ON.

The normal status of the indicators of the panel of the PSU AC/DC is:




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– The RUN indicator is ON

– The monitoring indicator is OFF.

– The alarm indicator is OFF.3. Set the MCBs controlling the BBU and the STDM/SPAM in the DC PDB to ON.4. Set the switch on the UPEU panel of the BBU to ON.5. Check the indicators of boards and modules.

When the boards and modules are normal after power-on, the status of indicators isas follows:

– UPEU panel of the BBU: the indicator (green) is ON– FAN panel of the BBU: the indicator (green) is blinking– Boards inside the BBU: the RUN indicator (green) is blinking– FAN panel: the indicator (green) is blinking– STDM and SPAM panels: the RUN indicator (green) is blinking

----End

3.1.2 Powering Off the BTSThis describes two power-off modes of the BTS, that is, regular power-off and emergency power-off.

Context

You can use the two power-off methods on the BTS based on the site situations.

l Regular power-offIt is applied to some specific situations, for example BTS movement and predicted power-off.

l Emergency power-offIt is applied to some emergency situations, for example the impact caused by fire, smoke,and water.

Procedurel Regular power-off of the BTS3606CE -48 V

1. Set the switch on the UPEU panel of the BBU to OFF.2. Set the MCBs controlling BBU and STDM/SPAM in DC PDB to OFF.3. Switch off the power supply from the power system to the BTS.

l Regular power-off of the BTS3606CE +24V1. Set the switch on the UPEU panel of the BBU to OFF.2. Set the MCBs controlling BBU and STDM/SPAM in DC PDB to OFF.3. Switch off the power supply from the power system to the BTS.

l Regular power-off of the BTS3606AC



3-5

1. Set the switch on the UPEU panel of the BBU to OFF.2. Set the MCBs controlling BBU and STDM/SPAM in DC PDB to OFF.3. Set the MCB of the AC PDB PSU to OFF.4. Switch off the power supply from the power system to the BTS.

l Emergency power-off

Switch off the power supply from the power system to the BTS.

----End




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Documents

BTS3606CE BTS3606AC CDMA.pdf