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

DBS3900 V100R009C00

Site Maintenance Guide Issue

Draft C

Date

2014-03-26

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2014. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd. Address:

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

Website:

http://www.huawei.com

Email:

[email protected]

Issue Draft C (2014-03-26)

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

i

DBS3900 Site Maintenance Guide

About This Document

About This Document Overview This document describes the routine hardware maintenance items for the DBS3900. The maintenance items consist of power supply system maintenance, grounding system maintenance, cabinet maintenance, as well as power-on and power-off operations. It also describes how to replace components, modules, and boards. The exteriors of components or cables in this document are for reference only. The actual exteriors may be different. NOTE

Unless otherwise specified, the BBU refers to both the BBU3900 and BBU3910 in this document. For details about the LampSite solution, see LampSite Site Maintenance Guide.

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

Product Version

DBS3900

V100R009C00. The mapping base station versions are: GBTS: V100R016C00 eGBTS: V100R016C00 NodeB: V200R016C00 eNodeB: V100R007C00

Intended Audience This document is intended for: l

Network planning engineers

l

Field engineers

l

System engineers



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About This Document

Organization 1 Changes in DBS3900 Site Maintenance Guide This chapter describes the changes in DBS3900 Site Maintenance Guide. 2 Maintenance Items for the DBS3900 Hardware This section describes the items, period, operation guidelines, and reference standards for maintaining the DBS3900 hardware. 3 Powering On and Powering Off the Base Station The method to power on and power off a DBS3900 varies according to the cabinets used by the DBS3900. This chapter describes how to power on and power off a DBS3900 in different scenarios. 4 Risky Hardware Operations The operations of replacing some components or boards may have affect the normal system operation, and therefore is called risky hardware operations. To reduce the impact of risky operations on the system, operators need to know the impacts and perform the replacement at proper time. 5 Replacing or Adding Common Components This chapter describes how to replace or add the common components in various cabinets used by the DBS3900. 6 Replacing the Components in the APM, TMC, and Battery Cabinet This chapter describes the procedures and precautions for replacing the components in the APM series cabinets, TMC series cabinets and IBBS series cabinets. 7 Replacing the Components in an OMB This chapter describes the procedure and precautions for replacing the components in an OMB. 8 Replacing the Components in an OMB (Ver.C) This chapter describes the procedure and precautions for replacing the components in an OMB (Ver.C). 9 Replacing the Components in an IMB03 This chapter describes the procedure and precautions for replacing the components in an IMB03. 10 Replacing the Components in a 19-Inch Rack This chapter describes the procedure and precautions for replacing the components in a 19-inch rack. 11 Replacing the Components in a TP48600A For details about the procedure and precautions for replacing the components in the TP48600A, see TP48600A-H17B1 User Guide. 12 Replacing Components in the IBC10 This chapter describes the procedure and precautions for replacing components in an IBC10. Issue Draft C (2014-03-26)


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About This Document

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

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

Description Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or unanticipated results. NOTICE is used to address practices not related to personal injury. Calls attention to important information, best practices and tips. NOTE is used to address information not related to personal injury, equipment damage, and environment deterioration.

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

Description

Times New Roman

Normal paragraphs are in Times New Roman.

Boldface

Names of files, directories, folders, and users are 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 Conventions Issue Draft C (2014-03-26)


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About This Document

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

Description

Boldface

The keywords of a command line are in boldface.

Italic

Command arguments are in italics.

[]

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

{ x | y | ... }

Optional items are grouped in braces and separated by vertical bars. One item is selected.

[ x | y | ... ]

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

[ x | y | ... ]*

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

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

Description

Boldface

Buttons, menus, parameters, tabs, window, and dialog titles are in boldface. For example, click OK.

>

Multi-level menus are in boldface and separated by the ">" signs. For example, choose File > Create > Folder.

Keyboard Operations The keyboard operations that may be found in this document are defined as follows. Format

Description

Key

Press the key. For example, press Enter and press Tab.

Key 1+Key 2

Press the keys concurrently. For example, pressing Ctrl+Alt +A means the three keys should be pressed concurrently.

Key 1, Key 2

Press the keys in turn. For example, pressing Alt, A means the two keys should be pressed in turn.

Mouse Operations Issue Draft C (2014-03-26)


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About This Document

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

Description

Click

Select and release the primary mouse button without moving the pointer.

Double-click

Press the primary mouse button twice continuously and quickly without moving the pointer.

Drag

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



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Contents

Contents About This Document.....................................................................................................................ii 1 Changes in DBS3900 Site Maintenance Guide..........................................................................1 2 Maintenance Items for the DBS3900 Hardware......................................................................3 3 Powering On and Powering Off the Base Station...................................................................5 4 Risky Hardware Operations........................................................................................................7 5 Replacing or Adding Common Components.........................................................................10 5.1 Boards Operation Regulations......................................................................................................................................11 5.2 Replacing the BBU Case..............................................................................................................................................12 5.3 Replacing BBU Boards................................................................................................................................................17 5.3.1 Querying the Electronic Label...................................................................................................................................17 5.3.2 Replacing the UMPT.................................................................................................................................................18 5.3.3 Replacing the WMPT................................................................................................................................................27 5.3.4 Replacing the GTMU................................................................................................................................................35 5.3.5 Replacing the LMPT.................................................................................................................................................43 5.3.6 Replacing the UBBP..................................................................................................................................................51 5.3.7 Replacing the WBBP.................................................................................................................................................55 5.3.8 Replacing the LBBP..................................................................................................................................................59 5.3.9 Replacing the UPEU..................................................................................................................................................63 5.3.10 Replacing the UEIU.................................................................................................................................................68 5.3.11 Replacing the FAN Unit..........................................................................................................................................72 5.3.12 Replacing the UTRP................................................................................................................................................75 5.3.13 Replacing the USCU...............................................................................................................................................80 5.3.14 Replacing the UBRI.................................................................................................................................................83 5.3.15 Replacing the UCIU................................................................................................................................................88 5.3.16 Replacing the Optical Module.................................................................................................................................91 5.4 Adding Boards to the BBU...........................................................................................................................................95 5.4.1 Adding a UPEU.........................................................................................................................................................95 5.4.2 Adding a UBBP.......................................................................................................................................................117 5.4.3 Adding a WBBP......................................................................................................................................................120 5.4.4 Adding an LBBP.....................................................................................................................................................122 Issue Draft C (2014-03-26)


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Contents

5.4.5 Adding a UTRP.......................................................................................................................................................124 5.5 Replacing Boards in the SLPU...................................................................................................................................126 5.5.1 Replacing a UELP...................................................................................................................................................126 5.5.2 Replacing the UFLP................................................................................................................................................130

6 Replacing the Components in the APM, TMC, and Battery Cabinet.............................135 7 Replacing the Components in an OMB................................................................................136 7.1 Replacing an HEUA...................................................................................................................................................137 7.2 Replacing an EPS30-4815AF.....................................................................................................................................139 7.3 Replacing a DCDU-03B, DCDU-11B, or DCDU-12B..............................................................................................144 7.4 Replacing the AC Surge Protection Box....................................................................................................................148

8 Replacing the Components in an OMB (Ver.C)..................................................................151 8.1 Replacing the ELU.....................................................................................................................................................152 8.2 Replacing an HEUB...................................................................................................................................................153 8.3 Replacing a PDU10D-01............................................................................................................................................156 8.4 Replacing a PMU 11A................................................................................................................................................158 8.5 Replacing a PSU (R4850G2)......................................................................................................................................162 8.6 Replacing an ETP48100-A1 Subrack.........................................................................................................................166 8.7 Replacing the Fuse......................................................................................................................................................169 8.8 Replacing the AC Surge Protection Box....................................................................................................................172 8.9 Replacing a GPS Surge Protector...............................................................................................................................174

9 Replacing the Components in an IMB03..............................................................................177 9.1 Replacing an EPS30-4815AF.....................................................................................................................................178 9.2 Replacing an EPS4890 Subrack.................................................................................................................................183 9.3 Replacing an EPS24S48100DC Subrack...................................................................................................................186 9.4 Replacing an ETP48100-B1 Subrack.........................................................................................................................188 9.5 Replacing a PMU 01B................................................................................................................................................191 9.6 Replacing a PSU (EPW25-24S48D)..........................................................................................................................196 9.7 Replacing a PSU (EPW30-48A).................................................................................................................................199 9.8 Replacing a DCDU-03B, DCDU-11B, or DCDU-12B..............................................................................................202

10 Replacing the Components in a 19-Inch Rack...................................................................207 10.1 Replacing a DCDU-03B, DCDU-11B, or DCDU-12B............................................................................................208

11 Replacing the Components in a TP48600A.........................................................................213 12 Replacing Components in the IBC10...................................................................................214 12.1 Replacing a DCDU-12C...........................................................................................................................................215 12.2 Replacing the ELU...................................................................................................................................................218 12.3 Replacing a Temperature Sensor at the Air Intake Vent of the BBU.......................................................................222 12.4 Replacing an FAU03D-02........................................................................................................................................226 12.5 Replacing a Fuse.......................................................................................................................................................229



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Contents

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



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1

1 Changes in DBS3900 Site Maintenance Guide

Changes in DBS3900 Site Maintenance Guide This chapter describes the changes in DBS3900 Site Maintenance Guide.

Draft C (2014-03-26) This is a draft. Compared with the issues Draft B (2014-02-28), this issue includes the following changes: l

12 Replacing Components in the IBC10 and its child topic

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

Draft B (2014-02-28) This is a draft. Compared with the issues Draft A (2014-01-20), this issue does not include any new information and does not exclude any information. Compared with the issues Draft A (2014-01-20), this issue includes the following changes. Topic

Change Description

About This Document

Added the description of the LampSite solution.

5.3.16 Replacing the Optical Module

Added the step of performing rate negotiation.

Draft A (2014-01-20) This is a draft. Compared with the issues for the multimode base station version V100R008C00 and the singlemode base station versions WCDMA-NodeB V200R015C00, GSM-BTS V100R015C00, and eNodeB V100R006C00, this issue includes the following changes: l

5.3.6 Replacing the UBBP



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l

1 Changes in DBS3900 Site Maintenance Guide

5.4.2 Adding a UBBP

Compared with the issues for the multimode base station V100R008C00, WCDMA-NodeB V200R015C00, GSM-BTS V100R015C00, and eNodeB V100R006C00, this issue includes the following change: Added the descriptions of the BBU3910. Compared with the issues for the multimode base station V100R008C00, WCDMA-NodeB V200R015C00, GSM-BTS V100R015C00, and eNodeB V100R006C00, this issue does not exclude any information.



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2 Maintenance Items for the DBS3900 Hardware

Maintenance Items for the DBS3900 Hardware

This section describes the items, period, operation guidelines, and reference standards for maintaining the DBS3900 hardware. For the maintenance items for the APM and TMC series cabinets used in the DBS3900, see Routine Maintenance Items. The following table lists the maintenance items for the BBU. Table 2-1 Maintenance Items for the BBU Item

Maintenance Period

Operation Guideline

Reference Standard

Fans

Weekly, monthly, or quarterly

Check the fans.

No fan-related alarm is generated.

Ventilation of the BBU

Quarterly

Check the air intake vents and air exhaust vents of the BBU and of the subrack and cabinet housing the BBU.

The air intake vents and air exhaust vents are clean. If much dirt is on the air intake vents and air exhaust vents, maintenance personnel must clean the vents.

Equipment surface

Monthly or quarterly

Check whether the equipment surface is intact and whether the labels on the equipment are legible.

The equipment surface is intact and the labels on the equipment are legible.

Equipment cleanliness


Check whether all the equipment is clean.

The surface and interior of the equipment are clean.

Indicators


Check whether the indicators are in the normal state.

No indicator indicates alarms.



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2 Maintenance Items for the DBS3900 Hardware

Item

Maintenance Period

Operation Guideline

Reference Standard

Ambient temperature in the cabinet


Check whether the temperature in the cabinet is within the acceptable temperature range.

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

NOTE

The maintenance period depends on onsite conditions.



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3

3 Powering On and Powering Off the Base Station

Powering On and Powering Off the Base Station The method to power on and power off a DBS3900 varies according to the cabinets used by the DBS3900. This chapter describes how to power on and power off a DBS3900 in different scenarios.

NOTICE l Power on a cabinet or BBU within 7 days after unpacking it. If you power off a cabinet or BBU for maintenance, restore power to the cabinet or BBU within 48 hours. l Power on an RRU within 24 hours after unpacking it. If you power off an RRU for maintenance, restore power to the RRU within 24 hours.

Powering On a Base Station The following table describes how to power on a DBS3900 in different scenarios. Application Scenario

Reference

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

Powering On a Base Station

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


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


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




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Application Scenario

Reference

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


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


Indoor scenario where the BBU is installed in an IMB03


Outdoor AC scenario where the BBU is installed in a TP48600A


Powering Off the Base Station 1.

Determine whether to perform a normal power-off or emergency power-off as required. If...

Then...

The base station needs to be powered off in scenarios such as a planned equipment swap or foreseeable regional blackout

Proceed to 2 to perform a normal poweroff.

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

Proceed to 3 to perform an emergency power off.

2.

Turn off the power switch on the BBU first, set all circuit breakers in all power devices to OFF, and then turn off the power switch on the external power equipment connecting to the cabinet in a DBS3900.

3.

Turn off the power switch on the external power equipment connecting to the cabinet in a DBS3900 and then the power switches on the BBU and power devices if time permits.



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4 Risky Hardware Operations

4

Risky Hardware Operations

The operations of replacing some components or boards may have affect the normal system operation, and therefore is called risky hardware operations. To reduce the impact of risky operations on the system, operators need to know the impacts and perform the replacement at proper time. The following table describes the impacts of replacing different components or boards. Table 4-1 Risky hardware operations Hardw are Operat ion

Impact

5.3.4 Replaci ng the GTMU

l If a multimode base station supports co-transmission and the shared ports for co-transmission are provided by the GSM mode, replacing the GTMU will interrupt the services of the peer mode. Typical scenario: The GU dual-mode base station supports co-transmission over TDM through the E1/T1 ports on the GTMU. The UMTS data is transmitted through the backplane in the manner of TDM over Packet (ToP). l For a multimode base station in dual-star topology, if the GTMU is reset abnormally or removed, the data and voice services of the UMTS or LTE mode may be interrupted.

5.3.3 Replaci ng the WMPT

l If no standby WMPT is configured, replacing a WMPT will interrupt all services carried by the NodeB. Therefore, a WMPT must be replaced within 10 minutes. l If a multimode base station supports co-transmission and the shared ports for co-transmission are on the WMPT, replacing the WMPT will interrupt the services of the peer mode. Typical scenario: The GU dual-mode base station supports co-transmission over IP through the Ethernet link on the WMPT. The GSM data is transmitted through the FE ports interconnecting the WMPT and GTMU panels. l For a multimode base station in dual-star topology, replacing the WMPT may decrease the rate of GSM or LTE data services. However, voice services will not be affected



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Hardw are Operat ion

Impact

5.3.5 Replaci ng the LMPT

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

5.3.2 Replaci ng the UMPT

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

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

l If a separate-MPT multimode base station supports co-transmission and the shared ports for co-transmission are on the UMPT, replacing the UMPT will interrupt the services of the peer mode. Typical scenario: The GU dual-mode base station supports co-transmission over IP through the Ethernet link on the UMPT. The GSM data is transmitted through the interconnected FE ports. l For a separate-MPT multimode base station in dual-star topology, replacing the UMPT that works in UMTS mode may decrease the rate of GSM or LTE data services. However, the voice services will not be affected. Replacing the UMPT that works in LTE mode may decrease the rate of GSM or UMTS data services. However, the voice services will not be affected. Replacing the UMPT that works in GSM mode may interrupt the data or voice services of UMTS or LTE mode.

5.3.7 Replaci ng the WBBP

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

5.3.8 Replaci ng the LBBP

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

5.3.11 Replaci ng the FAN Unit

l Replacing the FAN unit may cause overtemperature alarms due to interruption of heat dissipation in the BBU. Therefore, the FAN unit must be replaced within 3 minutes.

5.3.15 Replaci ng the UCIU

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



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Hardw are Operat ion

Impact

5.3.9 Replaci ng the UPEU

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

5.3.10 Replaci ng the UEIU

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

5.3.12 Replaci ng the UTRP

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

5.3.16 Replaci ng the Optical Module

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

Replaci ng an RFU

Replacing an RFU interrupts the services carried on the RFU.

Replaci ng an RRU

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


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

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


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5

5 Replacing or Adding Common Components

Replacing or Adding Common Components

About This Chapter This chapter describes how to replace or add the common components in various cabinets used by the DBS3900. 5.1 Boards Operation Regulations This section describes the boards operation regulations when installing or removing BBU boards. 5.2 Replacing the BBU Case This section describes the procedure and precautions for replacing a BBU3900 or BBU3910 case. 5.3 Replacing BBU Boards This chapter describes how to replace the boards in a BBU. 5.4 Adding Boards to the BBU This section describes how to add boards to the BBU during the maintenance. 5.5 Replacing Boards in the SLPU When maintaining the SLPU, the UELP or UFLP in the SLPU needs to be replaced.



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5.1 Boards Operation Regulations This section describes the boards operation regulations when installing or removing BBU boards. l

When moving a board, you must hold the board with both hands, as shown in the following figure. Figure 5-1 Incorrect and correct operations when moving a board

l

When installing a board, you must hold the ejector lever side of the board with one hand and hold another side of the board with the other hand to ensure that the board is moving in the correct direction. Do not hold the board with only one hand and never apply lateral forces to the board. The following figure shows incorrect and correct operations when installing a board. Figure 5-2 Incorrect and correct operations when installing a board (1)

l

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



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

5.2 Replacing the BBU Case This section describes the procedure and precautions for replacing a BBU3900 or BBU3910 case.

Prerequisites l

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

l

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

l

If a static IP-based GSM base station is used, a PC equipped with an Ethernet cable and the short message terminal (SMT) application is available. For details about the hardware requirements of the PC, see GSM SMT User Guide.

l

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

Process The following figure shows the process for replacing the BBU case.



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Figure 5-4 Process for replacing the BBU case

Procedure l

Perform the following operations remotely. 1.


Query alarms reported by the base station according to the instructions in Browsing Current Alarms. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

13



2.

Block all cells under the base station. NOTE

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

– Optional: For a GBTS, run the LST GCELL command on the BSC LMT to query the administrative state of the cells under the base station. Then, run the SET GCELLADMSTAT command with the ADMSTAT parameter set to LOCK to block all cells under the base station. – Optional: For an eGBTS, run the BLK GLOCELL command on the eGBTS LMT to block all cells under the eGBTS. – Optional: For a NodeB, run the BLK ULOCELL command on the NodeB LMT to block all cells under the NodeB. – Optional: For an eNodeB, run the BLK CELL command on the eNodeB LMT to block all cells under the eNodeB. 3.

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

4.

Instruct the site engineer to replace the board.

5.

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

6.

Unblock all cells under the base station. – Optional: For a GBTS, run the SET GCELLADMSTAT command with the ADMSTAT parameter set to UNLOCK on the BSC LMT to unblock all cells under the base station. – Optional: For an eGBTS, run the UBL GLOCELL command on the eGBTS LMT to unblock all cells under the eGBTS. – Optional: For a NodeB, run the UBL ULOCELL command on the NodeB LMT to unblock all cells under the NodeB. – Optional: For an eNodeB, run the UBL CELL command on the eNodeB LMT to unblock all cells under the eNodeB.

l

7.

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

8.

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

Perform the following operations locally. 1.

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

2.

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

NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Issue Draft C (2014-03-26)


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3.

Power off the BBU, as shown in the following table. Table 5-1 Powering off the BBU Base Station

Method of Powering off the BBU

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

Powering Off a Base Station

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


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


DBS3900


BTS3900AL (Ver.A)


BTS3900C (Ver.C)


4.

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

5.

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

CAUTION When removing a BBU power cable in a running base station, you need to remove the connector on the power equipment side before removing the connector on the BBU side. The operations in the reverse sequence may cause component damage or personal injury. 6.

Loosen the four M6 screws on the BBU case, and remove the BBU case, as shown in the following figure. Figure 5-5 Removing the BBU case

7.


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


15



CAUTION Remove and install a BBU board strictly according to instructions in 5.1 Boards Operation Regulations. 8.

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

9.

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

CAUTION Ensure that the BBU power cable for a BBU added to a running base station must be connected to the BBU first and then to the power equipment. The operations in the reverse sequence may cause component damage or personal injury. 10. Power on the BBU, as shown in the following table. Table 5-2 Powering on the BBU Base Station

Method of Powering on the BBU

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


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


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


DBS3900


BTS3900AL (Ver.A)


BTS3900C (Ver.C)


BTS3012AE (Ver.D_Z)

Powering On and Powering Off the BTS3012AE

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. 12. Take off the ESD wrist strap or ESD gloves, and pack up all tools. 13. Inform the remote engineer that the board has been replaced.



16



14. After receiving the notification from remote engineers, perform the operation of Performing Service Tests. ----End

Follow-up Procedure l

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

l

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

l

Contact the local Huawei office to handle the faulty component.

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

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

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

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

l

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

l

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

Step 2 The type of the board to be replaced can be determined according to the BoardType and Description in the command output. Keep the new board ready according to the information indicated by the bar code label on the panel or handle of the new board. The following figure shows the bar code label. Figure 5-6 Bar code label

----End Issue Draft C (2014-03-26)


17



5.3.2 Replacing the UMPT This section describes the procedure and precautions for replacing a faulty UMPT in a BBU3900 or BBU3910.

Prerequisites l

To confirm the type of a faulty board, do as follows: – If the board can be queried online, run an MML command online to query it according to the instructions in Querying the Electronic Label. – If the board is faulty and cannot be queried online, query the board information offline on the U2000 according to the instructions in Querying Inventory Data.

l


l


l

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

Context l

Replacing the UMPT has the following impacts on the base station: – If no standby UMPT is configured in a single-mode base station or co-MPT multimode base station, replacing a UMPT will interrupt all services carried by the base station. Therefore, a UMPT must be replaced within 10 minutes. – If a separate-MPT multimode base station supports co-transmission and the shared ports for co-transmission are on the UMPT, replacing the UMPT will interrupt the services of the peer mode. Typical scenario: The GU dual-mode base station supports cotransmission over IP through the Ethernet link on the UMPT. The GSM data is transmitted through the interconnected FE ports. – For a separate-MPT multimode base station in dual-star topology, replacing the UMPT that works in UMTS mode may decrease the rate of GSM or LTE data services. However, the voice services will not be affected. Replacing the UMPT that works in LTE mode may decrease the rate of GSM or UMTS data services. However, the voice services will not be affected. Replacing the UMPT that works in GSM mode may interrupt the data or voice services of UMTS or LTE mode.

l

The UMPT is hot-swappable.

l

The following figure shows the position of the UMPT in the BBU.



18



Figure 5-7 Position of the UMPT

Process The following figure shows the process for replacing the UMPT.

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



19



Figure 5-8 Process for replacing the UMPT

Procedure l




20



2.

Ask field engineers to prepare dialing test tools. For details, see Preparing Dialing Test Tools.

3.


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

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

4.

5.

If...

Then...

The base station is a GBTS

Run the LST GCELL command on the BSC to query the administrative state of the cells under the base station. Then, run the SET GCELLADMSTAT command with the ADMSTAT parameter set to LOCK to block all cells under the base station.

The base station is an eGBTS

Run the BLK GLOCELL command on the eGBTS to block all cells under the eGBTS.

The base station is a NodeB

Run the BLK ULOCELL command on the NodeB to block all cells under the NodeB.

The base station is an eNodeB

Run the BLK CELL command on the eNodeB to block all cells under the eNodeB.

Back up data configuration files and the license. a.

Manually back up the NE data by performing operations in Manually Backing Up NE Data and upload the configuration file to the OSS server according to the instructions in Uploading NE Data.

b.

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

Prepare for restoring software and configuration data.

NOTICE If the BBU is configured with a UTRPc, the software and configurations can only be reset locally.



21



Prerequisite

Procedure

If...

Then...

l The transport network supports the automatic establishment of OM channels.

Prepare for restoring software and configuration data remotely.

You need to restore software and configurations by means of a self-deployment task on the U2000

1. Uploading a Software Package.

l The time for restoring software and configuration s remotely is longer than that for restoring software and configuration s locally.

l The device required by local commissionin g is available: a PC (commissioni ng using the LMT) or USB flash drive (commissioni ng using a USB flash drive).


2. Uploading a Commissioning License (When LTE Services are to be Enabled). 3. Preparing a Data Configuration File and a Deployment List. 4. Creating an NE Commissioning Task. 5. Starting an NE Commissioning Task.

Prepare for restoring software and configuration data locally.

You need to restore NE software and configurations manually

Download the software package of the target version from http:// support.huawei.com, and upload the software package from the OSS client to the OSS server or download the software package to the NE. For detailed operations, seeTransferring NE Files.

You need to conduct commissioning using the LMT

1. Preparing a Software Package, Data Configuration File, and Deployment List.


2. Uploading a Commissioning License (When LTE Services are to be Enabled).

22



Prerequisite

Procedure

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

If...

Then...

You need to conduct commissioning using a USB flash drive

1. Preparing a Software Package, Data Configuration Files, and Deployment Lists. 2. Back up configuration data by using the USB flash drive. For details about the USB flash drive used for a NodeB, eNodeB, or BTS3900, see Preparing a USB Flash Drive (for NodeB, eNodeB, and BTS3900). For details about the USB flash drive used for a GBTS. see Preparing a USB Flash Drive (for GBTS). 3. Uploading a Commissioning License (When LTE Services are to be Enabled).

6.

Ask field engineers to replace the board locally.

7.

Field engineers have replaced the board.

8.

If preparations for locally restoring of software and configuration data have been finished before the replacement, perform the following operations:


If...

Then...


Start a commissioning task and monitor the task status. For details, see Monitoring the Commissioning Task. If the NE commissioning task enters the auto-configuration phase, the base station has finished restoring the software and configurations.


23



If...

Then...


1. To upgrade the software, see Upgrading NE Software and Installing NE Patches in Taskbased Mode. 2. To upgrade configuration file, see Restoring NE Data. 3. After the base station restarts, run the LST VER command to check whether all modes have been loaded with the software of the target version. If not, run the DLD SOFTWARE command to redownload the software and then run the ACT SOFTWARE command to activate the software.

9.

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

10. Unblock all cells under the base station. NOTE

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

If...

Then...

The base station is a GBTS

Run the SET GCELLADMSTAT command on the BSC with the ADMSTAT parameter set to UNLOCK to unblock all cells under the GBTS.


Run the UBL GLOCELL command on the eGBTS to unblock all cells under the eGBTS.


Run the UBL ULOCELL command on the NodeB to unblock all cells under the NodeB.

The base station is an eNodeB

Run the UBL CELL command on the eNodeB to unblock all cells under the eNodeB.

11. Perform the operation of Browsing Current Alarms to compare the alarms queried with the alarms queried before the replacement. Then handle the added alarms according to the instructions in 3900 Series Base Station Alarm Reference. 12. Synchronize the inventory information manually according to the instructions in Synchronizing Inventory Data. 13. Inform the site engineer that the remote operations are completed, and ask the site engineer to verify the services. Issue Draft C (2014-03-26)


24


l




2.


NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. 3.

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

4.

Remove the transmission cable from the UMPT. If a surge protection board is configured, the surge protection transfer cable also needs to be removed, as shown in the following figure. Figure 5-9 Removing the cables

5.

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

CAUTION l When removing a board, hold the board with both hands and remove it from the subrack slowly. l When transporting a board, hold the board with both hands.

Figure 5-10 Removing the UMPT



25



6.

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

7.

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


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

9.

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

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

Then...

You need to restore data using the LMT

1. Run the DLD CFGFILE command to download configuration files from the FTP server to the eNodeB. 2. To download and activate the configuration file, software, and license (optional), see Loading Software, Data Configuration File, and Commissioning License on the LMT

You need to restore data using a USB flash drive

b.

Loading a Software Package or Data Configuration Files from a USB Flash Drive

After the base station restarts, run the LST VER command to check whether all modes have been loaded with the software of the target version. If not, run the DLD SOFTWARE command to redownload the software and then run the ACT SOFTWARE command to activate the software.

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



l




26


l



5.3.3 Replacing the WMPT This section describes the procedure and precautions for replacing a faulty WMPT in a BBU3900.

Prerequisites NOTE

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

l


l


l


l

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

Context l

Replacing the WMPT has the following impacts on the base station: – If no standby WMPT is configured, replacing a WMPT will interrupt all services carried by the NodeB. Therefore, a WMPT must be replaced within 10 minutes. – If a multimode base station supports co-transmission and the shared ports for cotransmission are on the WMPT, replacing the WMPT will interrupt the services of the peer mode. Typical scenario: The GU dual-mode base station supports co-transmission over IP through the Ethernet link on the WMPT. The GSM data is transmitted through the FE ports interconnecting the WMPT and GTMU panels. – For a multimode base station in dual-star topology, replacing the WMPT may decrease the rate of GSM or LTE data services. However, voice services will not be affected

l

The WMPT is hot-swappable.

l

The following figure shows the position of the WMPT in the BBU.



27



Figure 5-11 Position of the WMPT in the BBU

Process The following figure shows the process for replacing the WMPT.




28



Figure 5-12 Process for replacing the WMPT

Procedure l




29



2.


3.

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


4.



5.

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. For details about how to change the VLAN group to the single VLAN, see the procedure in sections "Modifying the VLAN Configuration Mode" of RAN Reconfiguration Guide.

6.


NOTICE If the BBU is configured with a UTRPc, the software and configurations can only be reset locally. Prerequisite

Procedure

If...

Then...









30



Prerequisite


Procedure


If...

Then...




1. Preparing a Software Package, Data Configuration File, and Deployment List. 2. Uploading a Commissioning License (When LTE Services are to be Enabled).




31



Prerequisite

Procedure

If...

Then...



7.


8.


9.



If...

Then...




32



If...

Then...



10. On the NodeB, run the UBL ULOCELL command to unblock all cells under the NodeB. 11. Perform the operation of Browsing Current Alarms to compare the alarms queried with the alarms queried before the replacement. Then handle the added alarms according to the instructions in 3900 Series Base Station Alarm Reference. 12. Synchronize the inventory information manually according to the instructions in Synchronizing Inventory Data. 13. Inform the site engineer that the remote operations are completed, and ask the site engineer to verify the services. l



2.




4.

Remove the transmission cable from the WMPT. If a surge protection board is configured, the surge protection transfer cable also needs to be removed, as shown in the following figure. Figure 5-13 Removing the cables



33



5.

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


Figure 5-14 Removing the WMPT

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 WMPT.

7.



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

9.



Restore data using the LMT or a USB flash drive. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

34



If...

Then...




b.






l


l


5.3.4 Replacing the GTMU This section describes the procedure and precautions for replacing a faulty GTMU in a BBU3900.

Prerequisites l


l


l


l

Ensure that the USB port on the main control board has been enabled. The USB port on the main control board is enabled by default before delivery. Local engineers can run MML commands (DSP LOCALUSBPORT for the NodeB/eNodeB/



35



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

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

Then...

The base station is deployed by using DHCP

1. Ensure that the site ESN configured on the BSC is consistent with that on the BBU. 2. Ensure that the DHCP relay function has been enabled for the next layer-3 routing device on the transmission path of the base station.

Co-transmission is achieved through the backplane in the multimode base station and the GTMU is not connected to the transmission cable

Ensure that the GTMU version has been upgraded to BTS3000 V100R014C00 or later.

Context l

In a GBTS, replacing the GTMU has the following impacts on the base station: – If a multimode base station supports co-transmission and the shared ports for cotransmission are provided by the GSM mode, replacing the GTMU will interrupt the services of the peer mode. Typical scenario: The GU dual-mode base station supports co-transmission over TDM through the E1/T1 ports on the GTMU. The UMTS data is transmitted through the backplane in the manner of TDM over Packet (ToP). – For a multimode base station in dual-star topology, if the GTMU is reset abnormally or removed, the data and voice services of the UMTS or LTE mode may be interrupted.

l

The GTMU is hot-swappable.

l

The following figure shows the position of the GTMU in the BBU. Figure 5-15 Position of the GTMU

Process If the GTMU serves as the main control and transmission board, the process for replacing the GTMU is shown in the following figure. Issue Draft C (2014-03-26)


36






37



Figure 5-16 Process for replacing the GTMU

If the GTMUb serves as an evolved baseband radio interface processing board, the process for replacing the GTMUb is shown in the following figure. Issue Draft C (2014-03-26)


38



Figure 5-17 Process for replacing the GTMUb

NOTE

The following procedure uses the example of replacing the GTMU.

Procedure l



Query alarms reported by the base station according to the instructions in Browsing Current Alarms.


39



2.

On the BSC, run the LST BTSAUTODLDACTINFO command to check whether the function of automatically loading and activating base station software has been enabled. If...

Then...

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

1. Download the software package of the target version from http:// support.huawei.com. 2. To download the software package from the OSS server to the corresponding BSC or RNC, see Transferring NE Files.

The function of automatically loading and activating base station software has not been enabled

l To back up data using the SMT, download the software package of the target version from http:// support.huawei.com and save it to the PC on which SMT is installed. l To back up data with a USB flash drive, see Preparing a USB Flash Drive (for GBTS).

3.

Optional: If static IP addresses are configured, run the LST BTSIPRT, LST BTSDEVIP, and LST BTSIP commands on the BSC to query the IP address and route information.

4.

For a GBTS, run the LST GCELL command on the BSC LMT to query the administrative state of the cells under the base station. Then, run the SET GCELLADMSTAT command with the ADMSTAT parameter set to LOCK to block all cells under the base station.

5.


6.

Run the LST BTSAUTODLDACTINFO command on the BSC to check whether the function of automatically loading and activating base station software has been enabled.

7.


If...

Then...

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

Unblock all cells under the base station.

The function of automatically loading and activating base station software has not been enabled

Ask the local engineers to restore configuration data.

For a GBTS, run the SET GCELLADMSTAT command with the ADMSTAT parameter set to UNLOCK on the BSC LMT to unblock all cells under the base station.


40



8.


9.

Synchronize the inventory information manually according to the instructions in Synchronizing Inventory Data.

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



2.




4.

Remove the transmission cable and CPRI cables from the GTMU. If a surge protection board is configured, the surge protection transfer cable also needs to be removed, as shown in the following figure. Figure 5-18 Removing the cables

5.

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




41



Figure 5-19 Removing the GTMU

6.

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

7.



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

9.

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

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

a.

Connect the computer on which the SMT application is installed to the ETH port on the GTMU, as shown in the following figure. Figure 5-20 Connecting the GTMU



42



b.

Log in to the SMT, and configure the static IP data according to the instructions in section "Setting the Static IP Address of the IP over FE BTS" in SMT User Guide.

c.

Restart the GTMU on the SMT.

d.

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

10. If the function of automatically loading and activating base station software has not been enabled, restore data. – To restore data using the SMT, see Forcibly Loading Software and Activating Software. – To restore the data backed up in a USB flash drive, see Preparing a USB Flash Drive (for NodeB, eNodeB, and BTS3900). 11. Take off the ESD wrist strap or ESD gloves, and pack up all tools. 12. Inform the remote engineer that the board has been replaced. 13. After receiving the notification from remote engineers, perform the operation of Performing Service Tests. ----End



l


l


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

Prerequisites NOTE

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

l


l


l


l

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



43



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

Context l

Replacing the LMPT has the following impacts on the base station: – If no standby LMPT is configured in an eNodeB, replacing an LMPT will interrupt all services carried by the eNodeB. Therefore, an LMPT must be replaced within 10 minutes. – For a multimode base station in dual-star topology, replacing the LMPT may decrease the rate of GSM or UMTS data services. However, voice services will not be affected

l

The LMPT is hot-swappable.

l

Figure 5-21 shows the position of the LMPT in the BBU. Figure 5-21 Position of the LMPT

Process The following figure shows the process for replacing the LMPT.




44



Figure 5-22 Process for replacing the LMPT

Procedure l




45



2.


3.

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


4.

5.



b.

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


NOTICE If the BBU is configured with a UTRPc, the software and configurations can only be reset locally. Prerequisite

Procedure

If...

Then...









46



Prerequisite


Procedure


If...

Then...




1. Preparing a Software Package, Data Configuration File, and Deployment List. 2. Uploading a Commissioning License (When LTE Services are to be Enabled).




47



Prerequisite

Procedure

If...

Then...



6.


7.


8.



If...

Then...




48



If...

Then...



9.

On the eNodeB, run the UBL CELL command to unblock all cells under the eNodeB.

10. Optional: For an eNodeB, load a commercial license according to the instructions in Installing the Stand-Alone License. 11. Perform the operation of Browsing Current Alarms to compare the alarms queried with the alarms queried before the replacement. Then handle the added alarms according to the instructions in 3900 Series Base Station Alarm Reference. 12. Synchronize the inventory information manually according to the instructions in Synchronizing Inventory Data. 13. Inform the site engineer that the remote operations are completed, and ask the site engineer to verify the services. l



2.




4.

Remove the transmission cable from the LMPT. If a surge protection board is configured, the surge protection transfer cable also needs to be removed, as shown in the following figure. Figure 5-23 Removing the cables



49



5.

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


Figure 5-24 Removing the LMPT

2 1

6.

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

7.



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

9.



Restore data using the LMT or a USB flash drive.


50



If...

Then...




b.






l


l


5.3.6 Replacing the UBBP This section describes the procedure and precautions for replacing a faulty UBBP in a BBU3900 or BBU3910.

Prerequisites NOTE

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

l




51



l


l

Optional: If a UBBP is used for replacing a WBBP or LBBP, ensure that the license for the corresponding mode has been obtained.

l


l

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

Context – When the UBBP serving as the converging party in a base station using the CPRI MUX feature is reset abnormally or removed and inserted again, data and voice services of the converged party will be interrupted. – When the UBBP serving as the converged party in a base station using the CPRI MUX feature is reset abnormally or removed and inserted again, data service rate of the converging party will decrease. However, voice services of the converging party will not be affected. l

The UBBP is hot-swappable.

l

The following figure shows the position of the UBBP in the BBU3900 or BBU3910. Figure 5-25 Position of the UBBP

Process The following figure shows the process for replacing the UBBP.



52



Figure 5-26 Process for replacing the UBBP

Procedure l



2.

Run the BLK BRD command to block the UBBP.

3.


4.




53


l


5.

Run the UBL BRD command to unblock the UBBP.

6.


7.


8.




2.




4.

Remove the CPRI cables from the UBBP, as shown in the following figure. Figure 5-27 Removing a CPRI cable

5.

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




54



Figure 5-28 Removing a UBBP from the BBU

6.



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

8.

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

9.

Inform the remote engineer that the board has been replaced.




l


l


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



55



Prerequisites l


l


l


l

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

l

The WBBP is hot-swappable.

l

The following figure shows the position of the WBBP in the BBU.

Context

Figure 5-29 Position of the WBBP

Process The following figure shows the process for replacing the WBBP.



56



Figure 5-30 Process for replacing the WBBP

Procedure l



2.

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

3.


4.




57


l


5.

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

6.


7.


8.




2.




4.

Remove the CPRI cables from the WBBP, as shown in the following figure. Figure 5-31 Removing the cables

5.

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




58



Figure 5-32 Removing the WBBP

6.



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

8.


9.





l


l


5.3.8 Replacing the LBBP This section describes the procedure and precautions for replacing a faulty LBBP in a BBU3900. Issue Draft C (2014-03-26)


59



Prerequisites l


l


l


l

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

l

The LBBP is hot-swappable.

l

The following figure shows the position of the LBBP in the BBU.

Context

Figure 5-33 Position of the LBBP

Process The following figure shows the process for replacing the LBBP.



60



Figure 5-34 Process for replacing the LBBP

Procedure l



2.

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

3.


4.




61


l


5.

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

6.


7.


8.




2.




4.

Remove the CPRI cables from the LBBP, as shown in the following figure. Figure 5-35 Removing the cables

5.

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




62



Figure 5-36 Removing the LBBP

6.



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

8.


9.





l


l


5.3.9 Replacing the UPEU This section describes the procedure and precautions for replacing a faulty UPEU in a BBU3900 or BBU3910. Issue Draft C (2014-03-26)


63



Prerequisites l


l


l


l

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

Context – If a base station is configured with one UPEU, replacing the UPEU will cut off the power supply to the BBU and interrupt all the services carried by the base station. – If a base station is configured with two UPEUs, replacing one UPEU will cause the failure to monitor the external equipment. l

The following figure shows the position of the UPEU in the BBU. Figure 5-37 Position of the UPEU

Process The following figure shows the process for replacing the UPEU.



64



Figure 5-38 Process for replacing the UPEU

Procedure l



2.





65


5 Replacing or Adding Common Components NOTE




4.


5.

Unblock all cells under the base station. NOTE


– Optional: For a GBTS, run the SET GCELLADMSTAT command with the ADMSTAT parameter set to UNLOCK on the BSC LMT to unblock all cells under the base station. – Optional: For an eGBTS, run the UBL GLOCELL command on the eGBTS LMT to unblock all cells under the eGBTS. – Optional: For a NodeB, run the UBL ULOCELL command on the NodeB LMT to unblock all cells under the NodeB. – Optional: For an eNodeB, run the UBL CELL command on the eNodeB LMT to unblock all cells under the eNodeB.

l

6.


7.


8.




2.


NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. 3. Issue Draft C (2014-03-26)

Record all the cable connections on the panel of the module to be replaced. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

66



4.

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

5.

Remove the power cable, monitoring cable, and alarm cable from the UPEU, as shown in the following figure.

CAUTION Before removing the BBU power cable, turn off the BBU circuit breaker on the power device that supplies power to the BBU. If there is no such circuit breaker, remove the BBU power cable connector from the power device. Figure 5-39 Removing the cables

6.

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


Figure 5-40 Removing the UPEU



67



7.

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

CAUTION l Remove and install a BBU board strictly according to instructions in 5.1 Boards Operation Regulations. l Ensure that the BBU power cable to be connected in a running base station is connected to the BBU first and then to the power equipment. The operation in the reverse sequence may cause personal injury or component damage. 8.

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

9.

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

10. Take off the ESD wrist strap or ESD gloves, and pack up all tools. 11. Inform the remote engineer that the board has been replaced. 12. After receiving the notification from remote engineers, perform the operation of Performing Service Tests. ----End



l


l


5.3.10 Replacing the UEIU This section describes the procedure and precautions for replacing a faulty UEIU in a BBU3900 or BBU3910.

Prerequisites l


l


l




68



Context l

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

l

The UEIU is hot-swappable.

l

The following figure shows the position of the UEIU in the BBU. Figure 5-41 Position of the UEIU

Process The following figure shows the process for replacing the UEIU.



69



Figure 5-42 Process for replacing the UEIU

Procedure l



2.


3.


4.


5.




70



6. l




2.




4.

Disconnect the monitoring signal cable and alarm cable from the UEIU, as shown in the following figure. Figure 5-43 Disconnecting the cables

5.

Loosen the two M3 screws on the panel, and pull out the UEIU, as shown in the following figure. Figure 5-44 Removing the UEIU

1 2

6.


CAUTION Remove and install a BBU board strictly according to instructions in 5.1 Boards Operation Regulations. Issue Draft C (2014-03-26)


71



7.


8.


9.

After receiving the notification from remote engineers, perform the operation of Performing Service Tests.

----End



l


l


5.3.11 Replacing the FAN Unit This section describes the procedure and precautions for replacing a faulty FAN unit in a BBU3900 or BBU3910.

Prerequisites l


l


l


l

Replacing the FAN unit may cause overtemperature alarms due to interruption of heat dissipation in the BBU. Therefore, the FAN unit must be replaced within 3 minutes.

l

The FAN unit is hot-swappable.

l

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

Context

Figure 5-45 Position of the FAN unit



72



Process The following figure shows the process for replacing the FAN unit. Figure 5-46 Process for replacing the FAN unit

Procedure l



2.


3.




73


l


4.


5.


6.




2.



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


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



74



Figure 5-47 Removing the FAN unit

4.

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

5.

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

6.


7.


8.

After receiving the notification from remote engineers, perform the operation of Performing Service Tests.

----End



l


l


5.3.12 Replacing the UTRP This section describes the procedure and precautions for replacing a faulty UTRP in a BBU3900 or BBU3910.

Prerequisites l


l




75



l


l

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

l

The UTRP is hot-swappable.

l

The following figure shows the position of the UTRP in the BBU.

Context

Figure 5-48 Position of the UTRP

Process The following figure shows the process for replacing the UTRP.



76



Figure 5-49 Process for replacing the UTRP

Procedure l



2.





77






4.


5.




l

6.


7.


8.




2.




78



4.

Remove the transmission cable from the UTRP. If a surge protection board is configured, the surge protection transfer cable also needs to be removed, as shown in the following figure. Figure 5-50 Removing the cables

5.

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


Figure 5-51 Removing the UTRP

6.




79




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

8.

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

9.


10. Inform the remote engineer that the board has been replaced. 11. After receiving the notification from remote engineers, perform the operation of Performing Service Tests. ----End



l


l


5.3.13 Replacing the USCU This section describes the procedure and precautions for replacing a faulty USCU in a BBU3900 or BBU3910.

Prerequisites l


l


l


l

The USCU is hot-swappable.

l

The following figure shows the position of the USCU in the BBU.

Context



80



Figure 5-52 Position of the USCU

Process The following figure shows the process for replacing the USCU. Figure 5-53 Process for replacing the USCU



81



Procedure l

l



2.


3.


4.


5.


6.




2.




4.

Remove the GPS clock signal cable from the USCU, as shown in the following figure. Figure 5-54 Removing the cable

5.

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




82



Figure 5-55 Removing the USCU

6.



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

8.


9.





l


l


5.3.14 Replacing the UBRI This section describes the procedure and precautions for replacing a faulty UBRI in a BBU3900 or BBU3910.



83



Prerequisites l


l


l


l

The UBRI is hot-swappable.

l

The following figure shows the position of the UBRI in the BBU.

Context

Figure 5-56 Position of the UBRI in the BBU

Process The following figure shows the process for replacing the UBRI.



84



Figure 5-57 Process for replacing the UBRI

Procedure l



2.





85






4.


5.




l

6.


7.


8.




2.




86



4.

Remove the CPRI cables from the UBRI, as shown in the following figure. Figure 5-58 Removing the cables

5.

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

CAUTION l When removing a board, hold the board with both hands and remove it from the subrack slowly. l When transporting a board, hold the board with both hands. Figure 5-59 Removing the UBRI

2 1

6.



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

8.


9.


10. After receiving the notification from remote engineers, perform the operation of Performing Service Tests. ----End Issue Draft C (2014-03-26)


87





l


l


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

Prerequisites l


l


l


l

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

l

The UCIU is hot-swappable.

l

The following figure shows the position of the UCIU in the BBU.

Context

Figure 5-60 Position of the UCIU

Process The following figure shows the process for replacing the UCIU.



88



Figure 5-61 Process for replacing the UCIU

Procedure l



2.


3.


4.


5.




89



6. l




2.




4.

Remove the interconnection cable between optical ports from the UCIU, as shown in the following figure. Figure 5-62 Removing the cable

5.

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




90



6.



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

8.


9.





l


l


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

Prerequisites l

To confirm the type of a faulty optical module, perform the following steps: 1.


For a GBTS, run the DSP BTSOPTMODULE command on the U2000 to query the type of the optical module. For an eGBTS, NodeB, or eNodeB, run the DSP SFP command on the U2000 to query the type of the optical module. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

91



2.

Identify the type of the faulty module according to the values of Rate, Wavelength, and Transmission mode queried by the command, and obtain an optical module of the same type as the faulty one according to the label on the new module. The following figure shows the label on an optical module. Figure 5-63 Label on an optical module

(1) Maximum rate

(2) Wavelength

(3) Transmission mode

NOTE

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

l


l


l

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

l

To prevent the ongoing services from being interrupted, you need to perform Step 1 to reset the RRU after removing and reinstalling the optical module, fiber optic cable, or cable if the CPRI port is changed.

l

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

Context

Figure 5-64 Position of an optical module

(1) Optical module



92



Procedure l

Replace the optical module. 1.



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

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

3.

Record the position of the optical module in the board.

4.

Press the latch on the optical connector, and then remove the connector from the faulty optical module, as shown in the following figure. Figure 5-65 Removing the cable

CAUTION Do not look into the optical module without eye protection after removing the fiber optic cable from the optical module. Issue Draft C (2014-03-26)


93



5.

Lower the puller on the faulty optical module, and then pull the puller until the optical module is removed from the BBU, as shown in the following figure. Figure 5-66 Removing the optical module

6.

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

7.

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

8.

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

9.

Ask field engineers to reset the corresponding RF module.

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


Optional: Reset the RF module if the CPRI port is changed. – For a GBTS, run the RST BTSBRD command to reset the RF module. – For an eGBTS, NodeB, or eNodeB, run the RST BRD command to reset the RF module.

2.

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

NOTICE Rate negotiation interrupts services carried on the CPRI link for less than 2 minutes. – For a GBTS, run the MML command DSP BTSCPRILBR to query the CPRI line rate. If the current rate differs from the planned rate, run the MML command STR BTSCPRILBRNEG to start rate negotiation. Issue Draft C (2014-03-26)


94



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



l


l


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

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

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

Prerequisites l


l


l

The UPEU is hot-swappable.

l

The existing UPEUc is installed in slot 19 and the added UPEUc can be installed in slot 18, as shown in the following figure.

Context

Figure 5-67 Slot for the new UPEUc



95



Process The following figure shows the process for adding a UPEUc. Figure 5-68 Process for adding a UPEUc

Procedure l



2.

Run an MML command on the U2000 to add the board. – For a GBTS LMT, run the ADD BTSBRD command on the BSC to configure the newly added board. – For an eGBTS, NodeB, or eNodeB LMT, run the ADD BRD command on the eGBTS, NodeB, or eNodeB to configure the newly added board.

l





Install a UPEUc in slot 18 and tighten the screws on the panel to 0.6 N·m (5.31 lbf·in.), as shown in the following figure. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

96



Figure 5-69 Installing the UPEUc


Install the power cable for the added UPEUc. a.

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

b.

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


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

5.

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

6.


7.

Inform the remote engineer that the board has been installed.

----End

Follow-up Procedure Place the replaced component into an ESD box or bag. Then, place the ESD box or bag into a foam-padded carton or the packing box of the new module. Issue Draft C (2014-03-26)


97



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

Prerequisites l


l


l

The UEIU and UEPU are hot-swappable.

l

The UPEUc is installed in slot 19 and the UEIU to be replaced is installed in slot 18, as shown in the following figure.

Context

Figure 5-70 Slot housing the UEIU to be replaced

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



98



Figure 5-71 Process

Procedure l


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

2.

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

3.


4.


5.




99


l




2.



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

4.

Disconnect the monitoring signal cable and alarm cable from the UEIU, as shown in the following figure. Figure 5-72 Disconnecting the cables

5.


1 2

6.


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


100




7.



b.



Connect the cables to corresponding ports on the UPEUc according to the cable connection record for the UEIU.

9.


10. Check the status of the new board by observing the status of indicators. For details about the status of the indicators, see UPEU. 11. Take off the ESD wrist strap or ESD gloves, and pack up all tools. 12. Inform the remote engineer that the board has been installed. ----End

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

Replacing One UPEUa Board with Two UPEUc Boards When the BBU is configured with a UPEUa and the power required by the BBU exceeds the power supported by the UPEUa, you need to replace the UPEUa with two UPEUc boards. Issue Draft C (2014-03-26)


101



Prerequisites l


l


l


l

The following figure shows the slot that houses the UPEUa to be replaced.

Context

Figure 5-75 Slot housing the UPEUa to be replaced

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



102



Figure 5-76 Process

Procedure l



2.


l





103




Install a UPEUc in slot 18 and tighten the screws on the panel to 0.6 N·m (5.31 lbf·in.), as shown in the following figure. Figure 5-77 Installing the UPEUc




b.




5.

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



104



CAUTION Before removing the BBU power cable, turn off the BBU circuit breaker on the power device that supplies power to the BBU. If there is no such circuit breaker, remove the BBU power cable connector from the power device. 6.

Remove all the cables from the UPEUa in slot 19, as shown in the following figure. Figure 5-78 Removing the cables

7.

Loosen the two M3 screws on the panel, and pull out the UPEU, as shown in the following figure. Figure 5-79 Removing the UPEU

8.




105




9.

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

CAUTION Ensure that the BBU power cable for a BBU added to a running base station must be connected to the BBU first and then to the power equipment. The operations in the reverse sequence may cause component damage or personal injury. 10. Turn on the power switch for the UPEUc in slot19 to power on the UPEUc. 11. Check the status of the new board by observing the status of indicators. For details about the status of the indicators, see UPEU. 12. Take off the ESD wrist strap or ESD gloves, and pack up all tools. 13. Inform the remote engineer that the board has been installed. ----End



Replacing a UEIU and a UPEUa with Two UPEUc Boards When the BBU is configured with a UPEUa and a UEIU and the power required by the BBU exceeds the power supported by the UPEUa, you need to replace the UEIU and UPEUa with two UPEUc boards.

Prerequisites l




106



l


l


l

A UEIU is installed in slot 18 and a UPEUa is installed in slot 19, as shown in the following figure.

Context

Figure 5-81 Slots housing the UEIU and UPEUa

Process The following figure shows the process for replacing the UEIU and UPEUa with two UPEUc boards.



107



Figure 5-82 Process

Procedure l


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

2.

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

3.


4.




108



5.


l



2.



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

4.

Remove the monitoring cable and alarm cable from the UEIU, as shown in the following figure. Figure 5-83 Removing the cables

5.


1 2

6.




109



Figure 5-85 Installing a UPEUc

7.



b.



Connect the cables to corresponding ports on the UPEUc according to the cable connection record for the UEIU.

9.


10. Turn off the power switch for the UPEUa in slot 19 to power off the UPEUa. 11. Remove the power cable, monitoring cable, and alarm cable from the UPEUa, as shown in the following figure.

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



110



Figure 5-86 Removing the cables

12. Loosen the two M3 screws on the panel, and pull out the UPEU, as shown in the following figure. Figure 5-87 Removing the UPEU

13. Install a UPEUc in slot 19 and tighten the screws on the UPEUc to 0.6 N·m (5.31 lbf·in.), as shown in the following figure. Figure 5-88 Installing the UPEUc

14. Install the power cable for the added UPEUc.


a.


b.

Connect the other end of the power cable to the power supply equipment onsite. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

111



CAUTION When removing a BBU power cable in a running base station, you need to remove the connector on the power equipment side before removing the connector on the BBU side. The operations in the reverse sequence may cause component damage or personal injury. 15. Connect the cables to corresponding ports on the UPEUc that has replaced the UPEUa based on the cable connection record for the UPEUa.

CAUTION Ensure that the BBU power cable for a BBU added to a running base station must be connected to the BBU first and then to the power equipment. The operations in the reverse sequence may cause component damage or personal injury. 16. Turn on the power switch for the UPEUc in slot 19 to power on the UPEUc. 17. Check the status of the new board by observing the status of indicators. For details about the status of the indicators, see UPEU. 18. Take off the ESD wrist strap or ESD gloves, and pack up all tools. 19. Inform the remote engineer that the board has been installed. ----End


Replacing Two UPEUa Boards with Two UPEUc Boards When the BBU is configured with two UPEUa boards and the power required by the BBU exceeds the power supported by the UPEUa boards, you need to replace the two UPEUa boards with two UPEUc boards.

Prerequisites l


l


l


l

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

Context



112



Figure 5-89 Slots housing two UPEUa boards

Process The following figure shows the process for replacing the two UPEUa boards with two UPEUc boards.



113



Figure 5-90 Process

Procedure l




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

3.

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



114



4.

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

CAUTION Before removing the BBU power cable, turn off the BBU circuit breaker on the power device that supplies power to the BBU. If there is no such circuit breaker, remove the BBU power cable connector from the power device. Figure 5-91 Removing the cables

5.

Remove the UPEUa in slot 18, as shown in the following figure. Figure 5-92 Removing the UPEUa in slot 18

6.

Install a UPEUc in slot 18 and tighten the screws on the panel to 0.6 N·m (5.31 lbf·in.), as shown in the following figure. Figure 5-93 Installing the UPEUc



115




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

8.

Turn on the power switch for the UPEUc in slot 18 to power on the UPEUc.

9.

Turn off the power switch for the UPEUa in slot 19 to power off the UPEUc.

10. Remove all the cables from the UPEUa in slot 19.

CAUTION Before removing the BBU power cable, turn off the BBU circuit breaker on the power device that supplies power to the BBU. If there is no such circuit breaker, remove the BBU power cable connector from the power device. 11. Remove the UPEUa in slot 19, as shown in the following figure. Figure 5-94 Removing the UPEUa in slot 19

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



116



Figure 5-95 Installing a UPEUc in slot 19

13. Connect the cables to corresponding ports on the UPEUc newly installed in slot 19 based on the cable connection record for the UPEUa that has been removed from slot 19.

CAUTION Ensure that the BBU power cable for a BBU added to a running base station must be connected to the BBU first and then to the power equipment. The operations in the reverse sequence may cause component damage or personal injury. 14. Turn on the power switch for the UPEUc in slot 19 to power on the UPEUc. 15. Check the status of the new board by observing the status of indicators. For details about the status of the indicators, see UPEU. 16. Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End


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

Prerequisites l


l


l

The corresponding license has been obtained.

l

After a UBBP is added, the power required by the BBU may be greater than the power supported by the UPEU. Therefore, a UPEUc needs to be installed before the UBBP is

Context



117



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

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

l

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

Process The following figure shows the process for adding a UBBP. Figure 5-96 Process for adding a UBBP

Procedure l


Field engineers have installed the UBBP.

2.

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

3.

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


If...

Then...


Run the ADD GBTSBBRES command to deliver the UBBP multimode license (GSM).


118


l


If...

Then...


Run the ADD NODEBBBRES command to deliver the UBBP multimode license (UMTS).

The base station is an eNodeB for LTE FDD

Run the ADD ENODEBFDDBBRES command to deliver the UBBP multimode license (LTE FDD).

The base station is an eNodeB for LTE TDD

Run the ADD ENODEBTDDBBRES command to deliver the UBBP multimode license (LTE TDD).




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

CAUTION Remove and install a BBU board strictly according to instructions in 5.1 Boards Operation Regulations. Figure 5-97 Installing the UBBP

3.


If a CPRI cable needs to be connected to the newly added UBBP, install the CPRI cable according to the instructions in the related installation guide. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

119



4.

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

5.


6.


----End

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

Prerequisites l


l


l

After a WBBP is added, the power required by the BBU may exceed the power supported by the UPEU. Therefore, a UPEUc needs to be installed before the WBBP is added. For details about the power specifications of the UPEU and how to install a UPEUc, see UPEU and 5.4.1 Adding a UPEU, respectively. In some hot areas, if a second UPEU is installed in the BBU in an outdoor AC cabinet, the FAN unit in the BBU must be replaced with a FANc unit that operates at a high speed. For details about how to replace a FAN unit, see 5.3.11 Replacing the FAN Unit.

Context

NOTE

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

l

For details about the slot assignment of the WBBP in the BBU, see BBU3900 Slot Assignment.

Process The following figure shows the process for adding a WBBP.



120



Figure 5-98 Process

Procedure l

l


Receive the information that the site engineer has installed the board.

2.

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




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

CAUTION Remove and install a BBU board strictly according to instructions in 5.1 Boards Operation Regulations.



121



Figure 5-99 Installing the WBBP

3.

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

4.

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

5.


6.


----End

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

Prerequisites l


l


l

The LBBP is hot-swappable.

l

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

Context

NOTE


l

For details about the slot assignment of the LBBP in the BBU, see BBU3900 Slot Assignment.



122



Process The following figure shows the process for adding an LBBP. Figure 5-100 Process

Procedure Step 1 Perform the following operations remotely. 1.

Field engineers have installed the LBBP.

2.

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

Step 2 Perform the following operations locally. 1.



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

CAUTION Remove and install a BBU board strictly according to instructions in 5.1 Boards Operation Regulations. Issue Draft C (2014-03-26)


123



Figure 5-101 Installing the LBBP

3.

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

4.

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

5.


6.


----End

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

Prerequisites l


l


l

The UTRP is hot-swappable.

l

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

Context

NOTE


l

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



124



Process The following figure shows the process for adding a UTRP. Figure 5-102 Process

Procedure Step 1 Perform the following operations remotely. 1.

Field engineers have installed the UTRP.

2.

Run an MML command on the U2000 to add the board. l For a GBTS LMT, run the ADD BTSBRD command on the BSC to configure the newly added board. l For an eGBTS, NodeB, or eNodeB LMT, run the ADD BRD command on the eGBTS, NodeB, or eNodeB to configure the newly added board.

Step 2 Perform the following operations locally. 1.



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



125



CAUTION Remove and install a BBU board strictly according to instructions in 5.1 Boards Operation Regulations. Figure 5-103 Installing the UTRP

3.

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

4.

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

5.


6.


----End

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

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

Prerequisites l

To confirm the type of a faulty board, do as follows: – If the board can be queried online, run an MML command online to query it according to the instructions in 5.3.1 Querying the Electronic Label. – If the board is faulty and cannot be queried online, query the board information offline on the U2000 according to the instructions in Querying Inventory Data.



126



l


l


l

The following figure shows the UELP which is installed in the surge protection subrack for transmission signals in BTS3900AL.

Context

Figure 5-104 Position of a UELP in BTS3900AL

l

The following figure shows the position of the UELP in the BBU in OMB. Figure 5-105 Position of a UELP in OMB

l

The following figure shows the position of the UELP in the Signal Lightning Protection Unit (SLPU) in other cabinets. Figure 5-106 Position of a UELP



127


l


The UELP is hot-swappable.

Process The following figure shows the Process for replacing the UELP. Figure 5-107 Procedure for replacing the UELP

Procedure l



2.




128


l


3.


4.


5.


6.




2.




4.

Disconnect the transmission cables from the UELP, as shown in the following figure. Figure 5-108 Disconnecting the cables

5.

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




129



Figure 5-109 Removing the UELP

6.

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

7.

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

8.

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

9.


10. Inform the remote engineer that the board has been replaced. 11. After receiving the notification from remote engineers, perform the operation of Performing Service Tests. ----End



l


l


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

Prerequisites l

To confirm the type of a faulty board, do as follows: – If the board can be queried online, run an MML command online to query it according to the instructions in 5.3.1 Querying the Electronic Label. – If the board is faulty and cannot be queried online, query the board information offline on the U2000 according to the instructions in Querying Inventory Data.

l


l




130



Context l

The following figure shows the UFLP which is installed in the surge protection subrack for transmission signals in BTS3900AL. Figure 5-110 Position of a UFLP in BTS3900AL

l

The following figure shows the position of the UFLP in the BBU in OMB. Figure 5-111 Position of the UFLP in OMB

l

The following figure shows the position of the UFLP in the SLPU in other cabinets. Figure 5-112 Position of the UFLP

S

l

The UFLP is hot-swappable.



131



Process The following figure shows the process for replacing the UFLP. Figure 5-113 Procedure for replacing the UFLP

Procedure l



2.


3.




132


l


4.


5.


6.




2.




4.

Disconnect transmission cables from the UFLP, as shown in the following figure. Figure 5-114 Disconnecting the cables

5.

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




133



Figure 5-115 Removing the UFLP

6.

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

7.

Reconnect the cables according to the cable connection record.

8.


9.





l


l




134


6

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

Replacing the Components in the APM, TMC, and Battery Cabinet This chapter describes the procedures and precautions for replacing the components in the APM series cabinets, TMC series cabinets and IBBS series cabinets. In a DBS3900, the procedures for replacing the components in the APM30H series cabinets, TMC11H series cabinets, and IBBS series cabinets are the same as those for replacing the components in the cabinets used by a BTS3900A. For detailed operations, see chapters "Replacing Components in an APM30H or a TMC11H", "Replacing Components in an IBBS200T or IBBS200D", and "Replacing Components in an IBBS700T or IBBS700D" in corresponding BTS3900A site maintenance guide. The following table lists related links. Cabinet

Link

APM30H (Ver.B)/TMC11H (Ver.B)

Replacing Components in an APM30H or TMC11H

IBBS200D (Ver.B)/IBBS200T (Ver.B)

Replacing Components in an IBBS200T or IBBS200D

APM30H (Ver.C)/TMC11H (Ver.C)


IBBS200D (Ver.C)/IBBS200T (Ver.C)


APM30H (Ver.D)/TMC11H (Ver.D)


IBBS200D (Ver.D)/IBBS200T (Ver.D)


IBBS700D/IBBS700T




135


7

7 Replacing the Components in an OMB

Replacing the Components in an OMB

About This Chapter This chapter describes the procedure and precautions for replacing the components in an OMB. 7.1 Replacing an HEUA This section describes the procedure and precautions for replacing a Heat Exchange Unit type A (HEUA). 7.2 Replacing an EPS30-4815AF This section describes the procedures for replacing an EPS30-4815AF. 7.3 Replacing a DCDU-03B, DCDU-11B, or DCDU-12B When the DBS3900 uses an OMB, IMB03, or 19-inch rack, the DCDU-03B, DCDU-11B, or DCDU-12B (shortened to DCDU in this section) is used to distribute DC power to the BBU and RRUs. This section describes the procedure for replacing a DCDU. 7.4 Replacing the AC Surge Protection Box This section describes the procedure and precautions for replacing the AC surge protection box.



136



7.1 Replacing an HEUA This section describes the procedure and precautions for replacing a Heat Exchange Unit type A (HEUA).

Prerequisites l

The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves and an M3 Phillips screwdriver.

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

l

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

l


Context The following figure shows the position of the HEUA in the OMB. Figure 7-1 Position of the HEUA in the OMB

HEUA



137



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

NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Set the SW7 circuit breaker on the DCDU-03B to OFF to power off the HEUA. Step 3 Record all the cable connections on the panel of the module to be replaced. Step 4 Disconnect the monitoring cable and power cable from the HEUA, as shown in the following figure. Figure 7-2 Disconnecting the cables

Step 5 Remove the four M3 screws from the cover plate, and remove the cover plate. Remove the four M3 screws from the HEUA and remove the HEUA, as shown in the following figure. Figure 7-3 Removing the HEUA

Step 6 Install the new HEUA and tighten the screws on it to 0.55 N·m (4.87 lbf·in.). Step 7 Install the cover plate and tighten the screws on it to 0.55 N·m (4.87 lbf·in.). Step 8 Connect the cables back to the corresponding ports according to the record. Step 9 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End Issue Draft C (2014-03-26)


138





l


l


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

Prerequisites l

The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves, an M3 Phillips screwdriver, and an M6 Phillips screwdriver.

l


l

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

l

Replacing an EPS30-4815AF takes about 20 minutes.

l

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

Context

NOTE

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

l

The following figure shows the positions of the EPS30-4815AF in an OMB and an IMB03. Figure 7-4 Positions of the EPS30-4815AF



139


l


The following figure shows the positions of the components of an EPS30-4815AF. Figure 7-5 Positions of the components

(1) DCDU-05

(2) PSU (GERM4815T)

(3) PMU (EPMU03)

(4) EPS30-4815AF subrack

Procedure Step 1 Power off the EPS30-4815AF Step 2 Put on an ESD wrist strap or a pair of ESD gloves.

NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 3 Record the cable connections on the panel of the component to be replaced. Step 4 Remove the component to be replaced. l

Removing the entire EPS30-4815AF

1.

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

2.

Loosen the four M6 screws on the mounting ears of the EPS30-4815AF, and remove the EPS30-4815AF, as shown in the following figure.



140



Figure 7-6 Removing the EPS30-4815AF

l

Removing the DCDU-05

1.

Remove the DC output power cable from the DCDU-05, as shown in the following figure. Figure 7-7 Removing the cable from the DCDU-05

2.

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



141



Figure 7-8 Removing the DCDU-05

l

Removing a PSU

Loosen the M3 screw on the PSU panel, and remove the PSU, as shown in the following figure. Figure 7-9 Removing a PSU

l

Removing the PMU

1.

Remove the monitoring signal cable from the PMU, as shown in the following figure. Figure 7-10 Removing the cable from the PMU

2.

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



142



Figure 7-11 Removing the PMU

3.

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

l

Removing the subrack

1.


2.

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

3.

Loosen the four M6 screws on the mounting ears of the subrack, and remove the subrack, as shown in the following figure. Figure 7-12 Removing the subrack



143



Step 5 Install a new component. l

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

l

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

l

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

l

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

l

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

Step 6 Power on the EPS30-4815AF Step 7 Check whether the EPS30-4815AF works properly according to the status of indicators on the EPS30-4815AF, BBU, and RRUs. NOTE

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

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



l


l


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

Prerequisites l

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

l


l

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

l

Replacing a DCDU takes about 20 minutes.

Context



144



l

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

l

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

l

The following figure shows the positions of the DCDU in an OMB and the DCDU in an IMB03. Figure 7-13 DCDUs in an OMB and an IMB03




145



NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Modify the administrative state and block all cells managed by the BBU powered by the DCDU to be replaced and all RRUs powered by the DCDU. For detailed operations, see 5.2 Replacing the BBU Case and RRU Hardware Maintenance Guide. Step 3 Optional: Before replacing a DCDU-03B or DCDU-11B, record the status of circuit breakers SW0 to SW9 on the DCDU, and set all the circuit breakers to OFF. If a DCDU-12B is to be replaced, skip this step. Step 4 Turn off the DCDU circuit breaker on the external power device. Step 5 Record the installation positions (DC output ports) of all connectors on the DCDU, and remove the connectors. Step 6 Use a Phillips screwdriver to remove the protective cover for the DC input wiring terminal block from the DCDU. Step 7 Disconnect cables from the DCDU, as shown in the following figure. Figure 7-14 Disconnecting the cables

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



146



Figure 7-15 Removing the DCDU

Step 9 Place the new DCDU on the installation position, and gently push it into the cabinet along the guide rails. Tighten the two M6 screws on each side of the DCDU to 2 N·m (17.7 lbf·in.). Step 10 Remove the protective cover for the DC input wiring terminal block from the new DCDU, reconnect the power cables to the new DCDU according to the recorded installation positions, and then reinstall the protective cover. Step 11 Reinstall the cables to the new DCDU according to the recorded installation positions. Step 12 Turn on the DCDU circuit breaker on the external power device. Step 13 Optional: Set the circuit breakers that were set to OFF in Step 3 to ON. Step 14 Check the indicators on the BBU and RRUs according to the following table to verify that these components are properly powered by the DCDU.



147



Table 7-1 Maintenance checklist Item

Normal Status

Indicators on the BBU

l UPEU: The RUN indicator is steady on. l FAN: The STATE indicator is blinking green (on for 1s and off for 1s). l The normal status of the indicators on the BBU is as follows: RUN indicator: blinking green (on for 1s and off for 1s) ALM indicator: steady off ACT indicator: steady on

Indicators on the RRU panel

l RUN indicator: blinking green (on for 1s and off for 1s) l ALM indicator: steady off




l


l


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

Prerequisites l

The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves and an M4 screwdriver.

l

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

l


l

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

l

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

l

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

Context



148



Figure 7-16 Position of the AC surge protection box

(1) AC surge protection box

Procedure Step 1 Power off the base station. Step 2 Put on an ESD wrist strap or a pair of ESD gloves.

NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 3 Record all the cable connections on the panel of the module to be replaced. Step 4 Disconnect the monitoring cable and power cable from the AC surge protection box, as shown in the following figure. Figure 7-17 Disconnecting the cables



149



Step 5 Use an M4 screwdriver to remove the screw on the panel of the AC surge protection box, and pull it out of the cabinet, as shown in following figure. Figure 7-18 Removing the AC surge protection box

Step 6 Install the new AC surge protection box, and tighten the screw on the panel to 1.2 N·m (10.62 lbf·in.). Step 7 Reconnect the cables according to the cable connection record. Step 8 Power on the base station. Step 9 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End



l


l




150


8

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

Replacing the Components in an OMB (Ver.C)

About This Chapter This chapter describes the procedure and precautions for replacing the components in an OMB (Ver.C). 8.1 Replacing the ELU This section describes the procedure and precautions for replacing the ELU. 8.2 Replacing an HEUB This section describes the procedure and precautions for replacing a Heat Exchange Unit type B (HEUB). 8.3 Replacing a PDU10D-01 This section describes the procedure for replacing a PDU10D-01. 8.4 Replacing a PMU 11A This section describes the procedure for replacing a PMU 11A (shortened to PMU in this section). 8.5 Replacing a PSU (R4850G2) This section describes the procedure for replacing a PSU (R4850G2), which is shortened to PSU in this section. 8.6 Replacing an ETP48100-A1 Subrack This section describes the procedure for replacing an ETP48100-A1 (shortened to ETP in this section) subrack that is used in an AC cabinet. 8.7 Replacing the Fuse This section describes the procedure and precautions for replacing the fuse. 8.8 Replacing the AC Surge Protection Box This section describes the procedure and precautions for replacing the AC surge protection box. 8.9 Replacing a GPS Surge Protector This section describes the procedure and precautions for replacing the GPS surge protector.



151



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

Prerequisites l

The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves, a flat-head screwdriver, a Phillips screwdriver, and an ESD box or bag.

l

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

l


l

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

l

For the position of the ELU, see ELU.

l

It takes about 5 minutes to replace an ELU.

Context

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

NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or ESD gloves, to prevent electrostatic damage to the boards, modules, or electronic components. Step 2 Remove the faulty ELU, as shown in the following figure. 1.

Remove the RJ45 connector and cable from the top of the ELU.

2.

Optional: Open the cover for the ELU. Skip this step when replacing the ELU in a BTS3900 or BTS3900L. Push the housing of the faulty ELU upwards according to the arrow direction on the housing.

3.

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



152



Figure 8-1 Removing a faulty ELU

Step 3 Install a new ELU. 1.

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

2.

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

3.

Optional: Reinstall the cover for the ELU. Skip this step when replacing the ELU in a BTS3900 or BTS3900L.




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8.2 Replacing an HEUB This section describes the procedure and precautions for replacing a Heat Exchange Unit type B (HEUB).

Prerequisites l

The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves and an M3 Phillips screwdriver.



153



l

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

l


Context The following figure shows the position of the HEUB in the OMB. Figure 8-2 Position of the HEUB in the OMB


NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Remove the connector from the LOAD9 port on the PDU10D-01. Step 3 Record all the cable connections on the panel of the module to be replaced. Step 4 Disconnect the monitoring cable and power cable from the HEUB, as shown in the following figure.



154



Figure 8-3 Disconnecting the cables

Step 5 Remove the four M3 screws from the HEUB and remove the HEUB, as shown in the following figure. Figure 8-4 Removing the HEUB

Step 6 Install the new HEUB and tighten the screws on it to 0.55 N·m (4.87 lbf·in.). Step 7 Connect the cables back to the corresponding ports according to the record. Step 8 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End



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

Prerequisites l


l


l


l

Replacing a PDU10D-01 interrupts the services carried on the base station.

l

Replacing a PDU10D-01 takes about 20 minutes.

l

The following figure shows the position of the PDU10D-01 in an OMB.

Context

Figure 8-5 Position of the PDU10D-01




156



Step 2 Switch off the external power supply to power off the PDU10D-01. Step 3 Record the cable connections on the panel of the module to be replaced. Step 4 Disconnect the power cables from the PDU10D-01, as shown in the following figure. Figure 8-6 Disconnecting the cables

Step 5 Remove the four M6 screws from the panel, and then remove the PDU10D-01, as shown in the following figure. Figure 8-7 Removing the PDU10D-01

Step 6 Install the new PDU10D-01, tighten the screws on the PDU10D-01 to 1.4 N·m (12.39 lbf·in.), and reconnect the cables. Step 7 Switch on the external power supply to power on the PDU10D-01. Step 8 Observe the status of indicators on the BBU and RRUs listed in the following table to determine whether the new PDU10D-01 is working properly. Issue Draft C (2014-03-26)


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Table 8-1 Checklist Item

Normal Status




l The RUN indicator is blinking green (on for 1s and off for 1s). l The ALM indicator is steady off.




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

Prerequisites l

The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves, a flat-head screwdriver, a Phillips screwdriver, a torque screwdriver, and an ESD box or bag.

l


l


l




158



Context l

The PMU is hot-swappable.

l

Replacing a PMU takes about 5 minutes.

l

The position of the PMU varies with the base station type. Table 8-2 describes the positions of the PMU. Figure 8-8 shows the positions of the PMU.

Table 8-2 Positions of the PMU Base Station

Installation Position

Reference

BTS3900A (Ver.D)

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

Components of an EPU05A

BTS3900 (Ver.D)

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

BTS3900L (Ver.D)

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

DBS3900

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

Components of an EPU05A or Components of an ETP48100-A1

BTS3900C (Ver.C)

ETP48100-A1 in an OMB (Ver.C)

Components of an ETP48100-A1

BTS3900AL (Ver.A)

ETP48400 in a BTS3900AL (Ver.A) cabinet

Components of an ETP48400



159



Figure 8-8 Positions of the PMU



160




NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Remove the faulty PMU, as shown in the following figure. 1.

Record the cable connections on the panel of the faulty PMU, and disconnect the cables.

2.

Release the buckle on the upper right side of the faulty PMU, and lower the handle on the right.

3.

Hold the handle and remove the faulty PMU from the slot. Figure 8-9 Removing the faulty PMU

(2) Handle

(1) Buckle

Step 3 Take out a new PMU, and set the DIP switch on the PMU panel according to the setting of the DIP switch on the faulty PMU. The following figure shows the position of the DIP switch. Figure 8-10 Position of the DIP switch



161


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

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

Step 4 Install the new PMU, as shown in the following figure. 1.

Release the buckle on the upper right side of the PMU, and lower the handle.

2.

Gently slide the new PMU into the corresponding subrack along the guide rails.

3.

Raise the handle, and fasten the buckle.

4.

Reconnect the cables to the new PMU according to the cable connection records. Figure 8-11 Installing the PMU

Step 5 Check the status of indicators on the new PMU to determine whether the new PMU is working properly. When the new PMU is working properly, the RUN indicator is blinking green (on for 1s and off for 1s, or on for 0.125s and off for 0.125s) and the ALM indicator is steady off. Step 6 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End



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

Prerequisites l




162



l


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l

The PSU is hot-swappable.

l

It takes about 3 minutes to replace a PSU.

l

The position of the PSU varies with the base station type. Table 8-3 describes the positions of the PSU. Figure 8-12 shows the positions of the PSU.

Context

Table 8-3 Positions of the PSU Base Station


See Section...

BTS3900A (Ver.D)

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


BTS3900 (Ver.D)

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

BTS3900L (Ver.D)

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

DBS3900

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

Components of an EPU05A or Components of an ETP48100A1

BTS3900C (Ver.C)

ETP48100-A1 in an OMB (Ver.C)

Components of an ETP48100A1

BTS3900AL (Ver.A)

ETP48400 in a BTS3900AL (Ver.A) cabinet

Components of an ETP48400



163



Figure 8-12 Positions of the PSU



164




NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Remove the faulty PSU, as shown in the following figure. 1.

Release the buckle in the upper right of the faulty PSU, and lower the ejector lever on the right.

2.

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

Figure 8-13 Removing the faulty PSU

(2) Ejector lever

(1) Buckle

Step 3 Install a new PSU, as shown in the following figure. 1.

Release the buckle in the upper right of the PSU, and lower the ejector lever on the right side.

2.

Gently slide the new PSU into the corresponding subrack along the guide rails.

3.

Raise the ejector lever, and fasten the buckle.

Figure 8-14 Installing the PSU



165



Step 4 Check the status of indicators on the new PSU to determine whether the new PSU is working properly. When the power indicator is steady green, and the protection indicator and alarm indicator are steady off, the new PSU is working properly. Step 5 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End



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

Prerequisites l

The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves, an M3 screwdriver, and an M6 screwdriver.

l


l


l

Replacing an ETP subrack interrupts the services carried on a cabinet.

l

Replacing an ETP subrack takes about 20 minutes.

l

The following figure shows the position of the ETP subrack in an OMB (Ver.C).

Context



166



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

(1) ETP subrack


NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Power off the ETP subrack. Step 3 Record the cable connections on the panel of the component to be replaced. Step 4 Disconnect cables 1.

Remove the monitoring signal cable from the PMU, as shown in the following figure. Figure 8-16 Removing the monitoring signal cable from the PMU



167


2.


Disconnect the AC and DC input power cables from the subrack, as shown in the following figure. Figure 8-17 Disconnecting the cables from the EPU subrack

Step 5 Loosen the four M6 screws on the mounting ears of the subrack, and remove the subrack, as shown in the following figure. Figure 8-18 Removing an ETP subrack



168


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

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

Step 6 Install a new component. 1.

Install the new ETP subrack, tighten the screws on the mounting ears to 2 N·m (17.70 lbf·in.), and then reconnect related cables.

2.

When the ETP subrack is replaced, reinstall the PMU and PSUs in the new subrack, tighten the screws on the panel to 0.55 N·m (4.87 lbf·in.), and then reconnect related cables.

Step 7 Power on the ETP subrack. Step 8 Observe the status of indicators on the PMU and PSUs to determine whether the new ETP subrack is working properly. l When the PMU is working properly, the RUN indicator is blinking green (on for 1s and off for 1s), and the ALM indicator is steady off. l When the PSUs are working properly, the power indicators are steady green, and the protection indicators and alarm indicators are steady off. Step 9 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End



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

Prerequisites l

The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves, a flat-head screwdriver, an ESD box or bag, a new fuse, and a key to the cabinet door.

l

The quantities and types of fuses to be replaced are confirmed, and the require fuses are available.

l




169



Context

NOTICE l Replacing a fuse on the power output port for the BBU interrupts all services carried by the base station. l Replacing a fuse interrupts all services carried by the corresponding module. l The specifications of the fuse vary according to the ambient temperature. At temperatures around 25oC (77oF), the current of a fuse must be equal to or lower than 75% of the rated current. l

The fuse is hot-swappable.

l

The following figure shows the positions of the fuse and spare fuse box in the PDU10D-01 in an OMB (Ver.C).

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

(1) Spare fuse box




170



NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Remove the fuse to be replaced, as shown in the following figure. Figure 8-20 Disconnecting the fuse to be replaced

Step 3 Take out a new fuse from the spare fuse box, as shown in the following figure. Figure 8-21 Taking out a spare fuse

(1) Spare fuses

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



171



Step 5 Check the running status of the corresponding module to determine whether the new fuse is working properly. Step 6 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End



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8.8 Replacing the AC Surge Protection Box This section describes the procedure and precautions for replacing the AC surge protection box.

Prerequisites l

The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves and an M4 screwdriver.

l

The quantities and types of AC surge protectors to be replaced are confirmed, and new AC surge protectors are available.

l


l

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

l

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

l

The following figure shows the position of the AC surge protection box in an OMB (Ver.C).

Context



172



Figure 8-23 Position of the AC surge protection box

(1) AC surge protection box


NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Remove the board on which the indicator on the AC surge protection box is red, and install the new board of the same type as the removed board, as shown in the following figure. Figure 8-24 Disconnecting the cables

Step 3 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End Issue Draft C (2014-03-26)


173





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

Prerequisites l

The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves, a torque wrench, and an inner hexagon wrench.

l


l


l


l

It takes about 5 minutes to replace a GPS surge protector.

l

The following figure shows the position of a GPS surge protector.

Context

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

(1) Frame


(2) GPS surge protector


174



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

(1) Frame

(2) GPS surge protector


NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Remove the faulty GPS surge protector, as shown in the following figure. 1.

Disconnect the GPS jumper from the Surge terminal on the faulty GPS surge protector.

2.

Disconnect the PGND cable from the ground terminal of the faulty GPS surge protector.

3.

Remove the faulty GPS surge protector from the N50 straight female connector on the GPS signal cable.



175



Figure 8-27 Removing the faulty GPS surge protector

Step 3 Install the new GPS surge protector. 1.

Connect the Protect terminal on the faulty GPS surge protector to the N50 straight female connector on the GPS signal cable.

2.

Connect the PGND cable to the ground terminal for the faulty GPS surge protector.

3.

Connect the GPS jumper to the Surge terminal on the faulty GPS surge protector.




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9

9 Replacing the Components in an IMB03

Replacing the Components in an IMB03

About This Chapter This chapter describes the procedure and precautions for replacing the components in an IMB03. 9.1 Replacing an EPS30-4815AF This section describes the procedures for replacing an EPS30-4815AF. 9.2 Replacing an EPS4890 Subrack This section describes the procedure for replacing an EPS4890 (shortened to EPS in this section) subrack that is used in a BTS3900 (Ver.B) cabinet or an IMB03 cabinet. 9.3 Replacing an EPS24S48100DC Subrack This section describes the procedure for replacing an EPS24S48100DC (shortened to EPS in this section) subrack that is used in a BTS3900 (Ver.B) cabinet, an APM30H (Ver.B), or an IMB03. 9.4 Replacing an ETP48100-B1 Subrack This section describes the procedure for replacing an ETP48100-B1 (shortened to ETP in this section) subrack that is used in an AC cabinet. 9.5 Replacing a PMU 01B This section describes the procedure for replacing a PMU 01B (shortened to PMU in this section). 9.6 Replacing a PSU (EPW25-24S48D) This section describes the procedure for replacing a PSU (EPW25-24S48D) that is installed in an EPS24S48100DC in a BTS3900 (Ver.B) cabinet, an APM30H (Ver.B) cabinet, or an IMB03 cabinet. PSU (EPW25-24S48D) is shortened to PSU in this section. 9.7 Replacing a PSU (EPW30-48A) This section describes the procedure for replacing a PSU (EPW30-48A), which is shortened to PSU in this section. 9.8 Replacing a DCDU-03B, DCDU-11B, or DCDU-12B When the DBS3900 uses an OMB, IMB03, or 19-inch rack, the DCDU-03B, DCDU-11B, or DCDU-12B (shortened to DCDU in this section) is used to distribute DC power to the BBU and RRUs. This section describes the procedure for replacing a DCDU.



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9.1 Replacing an EPS30-4815AF This section describes the procedures for replacing an EPS30-4815AF.

Prerequisites l

The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves, an M3 Phillips screwdriver, and an M6 Phillips screwdriver.

l


l

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

l

Replacing an EPS30-4815AF takes about 20 minutes.

l

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

Context

NOTE

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

l

The following figure shows the positions of the EPS30-4815AF in an OMB and an IMB03. Figure 9-1 Positions of the EPS30-4815AF

l

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



178



Figure 9-2 Positions of the components

(1) DCDU-05

(2) PSU (GERM4815T)

(3) PMU (EPMU03)

(4) EPS30-4815AF subrack

Procedure Step 1 Power off the EPS30-4815AF Step 2 Put on an ESD wrist strap or a pair of ESD gloves.

NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 3 Record the cable connections on the panel of the component to be replaced. Step 4 Remove the component to be replaced. l

Removing the entire EPS30-4815AF

1.


2.

Loosen the four M6 screws on the mounting ears of the EPS30-4815AF, and remove the EPS30-4815AF, as shown in the following figure.



179



Figure 9-3 Removing the EPS30-4815AF

l

Removing the DCDU-05

1.

Remove the DC output power cable from the DCDU-05, as shown in the following figure. Figure 9-4 Removing the cable from the DCDU-05

2.

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



180



Figure 9-5 Removing the DCDU-05

l

Removing a PSU

Loosen the M3 screw on the PSU panel, and remove the PSU, as shown in the following figure. Figure 9-6 Removing a PSU

l

Removing the PMU

1.

Remove the monitoring signal cable from the PMU, as shown in the following figure. Figure 9-7 Removing the cable from the PMU

2.

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



181



Figure 9-8 Removing the PMU

3.

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 PMU (EPMU03).

l

Removing the subrack

1.


2.

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

3.

Loosen the four M6 screws on the mounting ears of the subrack, and remove the subrack, as shown in the following figure. Figure 9-9 Removing the subrack



182



Step 5 Install a new component. l

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

l

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

l

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

l

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

l

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

Step 6 Power on the EPS30-4815AF Step 7 Check whether the EPS30-4815AF works properly according to the status of indicators on the EPS30-4815AF, BBU, and RRUs. NOTE

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




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

Prerequisites l

The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves, a Phillips screwdriver, an ESD box or bag, and keys to the cabinet door.

l


l


l




183



Context l

Replacing an EPS subrack interrupts the services carried on a base station.

l

Replacing an EPS subrack takes about 25 minutes.

l

The following figure shows the positions of the EPS subrack in a BTS3900 (Ver.B) cabinet and an IMB03 cabinet.

Figure 9-10 Positions of the EPS subrack


NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Set the BAT circuit breaker on the EPS subrack to OFF. Step 3 Switch off external AC power supply to the EPS subrack. Step 4 Disconnect the PGND cable for the EPS subrack from the ground bar on the inner left wall of the cabinet. Step 5 Remove the PMU and all PSUs from the EPS subrack. For detailed operations, see 9.5 Replacing a PMU 01B and 9.7 Replacing a PSU (EPW30-48A). Step 6 Use a Phillips screwdriver to remove the cable tray from the right side of the EPS subrack. Step 7 Label the cables delivered with the EPS subrack on the right side of the EPS subrack, and remove the cables. Issue Draft C (2014-03-26)


184



Step 8 Remove the screws from the AC protective cover on the EPS subrack, and then remove the AC protective cover. Step 9 Label the AC input and output power cables delivered with the EPS subrack on the left side of the EPS subrack, and remove the cables.

NOTICE The PE wire of the AC input power cable is connected to a hexagonal screw on a mounting ear of the EPS subrack. The hexagonal screw must be stored properly after the PE wire is disconnected. Step 10 Label the DC output power cables delivered with the EPS subrack on the right side of the EPS subrack, and remove the cables. Step 11 Remove the remaining four screws from both sides of the EPS subrack, and pull the EPS subrack out of the cabinet along the guide rails, as shown in the following figure. The figure uses BTS3900 (Ver.B) as an example.

NOTICE The EPS subrack is heavy. Therefore, you need to hold the subrack with one hand and support the bottom with the other hand to slowly pull the subrack out of the cabinet. This prevents the subrack from falling and ensures personal safety. Figure 9-11 Removing an EPS subrack

Step 12 Slide the new EPS subrack into the original installation position along the guide rails, and then tighten the screws on both sides of the subrack. Step 13 Optional: If the faulty EPS subrack uses 220 V AC three-phase input power, the short-circuiting bars at the AC INPUT terminals on the new EPS subrack must be removed. Step 14 Reinstall the PMU and all PSUs in the corresponding slots in the EPS subrack. Issue Draft C (2014-03-26)


185



Step 15 Connect the new power series 120 connector to the removed cable tray, and reinstall the cable tray onto the right inner side of the cabinet. Step 16 Reinstall cables on the EPS subrack according to attached labels.

NOTICE The PE wire of the AC input power cable must be connected to the hexagonal screw removed in Step 9. Otherwise, reliability risks may be caused. Step 17 Install the AC protective cover on the left AC input area of the EPS subrack, and tighten the screw on the cover. Step 18 Restore external AC power supply to the EPS subrack. Step 19 Set the three PSU circuit breakers on the EPS subrack to ON. Step 20 Set the BAT circuit breaker on the EPS subrack to ON. Step 21 Observe the status of indicators on the PMU and PSUs to determine whether the new EPS subrack is working properly. l When the PMU is working properly, the RUN indicator is blinking green (on for 1s and off for 1s), and the ALM indicator is steady off. l When the PSUs are working properly, the power indicators are steady green, and the protection indicators and alarm indicators are steady off. Step 22 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End



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9.3 Replacing an EPS24S48100DC Subrack This section describes the procedure for replacing an EPS24S48100DC (shortened to EPS in this section) subrack that is used in a BTS3900 (Ver.B) cabinet, an APM30H (Ver.B), or an IMB03.

Prerequisites l

The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves, a Phillips screwdriver, an ESD box or bag, and keys to the cabinet door.

l




186



l


l


l

Replacing an EPS subrack interrupts the services carried on a cabinet.

l

Replacing an EPS subrack takes about 25 minutes.

l

The following figure shows the positions of the EPS subrack in a BTS3900 (Ver.B) cabinet, an APM30H (Ver.B), and an IMB03.

Context

Figure 9-12 Positions of the EPS subrack


NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Switch off external AC power supply to the EPS subrack. Step 3 Label the cables on the EPS subrack, and remove the cables. Step 4 Remove all PSUs from the EPS subrack. For detailed operations, see 9.6 Replacing a PSU (EPW25-24S48D). Step 5 Remove the four M6x12 screws from the mounting ears on both sides of the EPS subrack, as shown in the following figure. The figure uses BTS3900 (Ver.B) as an example. Issue Draft C (2014-03-26)


187



Figure 9-13 Removing an EPS subrack

Step 6 Use one hand to pull out the EPS subrack and the other hand to support the EPS subrack and then remove it. Step 7 Take out a new EPS subrack, perform the preceding operations in reverse sequence to install the new EPS subrack in the cabinet, and install the removed PSUs into the EPS subrack. Step 8 Reconnect the removed cables to the EPS subrack based on the cable connection records. Step 9 Restore external AC power supply to the EPS subrack. Step 10 Observe the status of indicators on the PSUs to determine whether the new EPS subrack is working properly. When the PSUs are working properly, the power indicators are steady green, and the protection indicators and alarm indicators are steady off. Step 11 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End



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

Prerequisites l

The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves, an M3 screwdriver, and an M6 screwdriver.

l




188



l


l

Replacing an ETP subrack interrupts the services carried on a cabinet.

l

Replacing an ETP subrack takes about 20 minutes.

l

The following figure shows the position of the ETP subrack in an IMB03.

Context

Figure 9-14 Position of the ETP subrack in an IMB03


NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Power off the ETP subrack. Step 3 Record the cable connections on the panel of the component to be replaced. Step 4 Disconnect cables 1.

Remove the monitoring signal cable from the PMU, as shown in the following figure. Figure 9-15 Removing the monitoring signal cable from the PMU



189


2.


Disconnect the AC and DC input power cables from the subrack, as shown in the following figure. Figure 9-16 Disconnecting the cables from the EPU subrack

Step 5 Loosen the four M6 screws on the mounting ears of the subrack, and remove the subrack, as shown in the following figure. Figure 9-17 Removing an ETP subrack

NOTE

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



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Step 6 Install a new component. 1.

Install the new ETP subrack, tighten the screws on the mounting ears to 2 N·m (17.70 lbf·in.), and then reconnect related cables.

2.

When the ETP subrack is replaced, reinstall the PMU and PSUs in the new subrack, tighten the screws on the panel to 0.55 N·m (4.87 lbf·in.), and then reconnect related cables.

Step 7 Power on the ETP subrack. Step 8 Observe the status of indicators on the PMU and PSUs to determine whether the new ETP subrack is working properly. l When the PMU is working properly, the RUN indicator is blinking green (on for 1s and off for 1s), and the ALM indicator is steady off. l When the PSUs are working properly, the power indicators are steady green, and the protection indicators and alarm indicators are steady off. Step 9 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End



l


l


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

Prerequisites l


l


l


l


l

The PMU is hot-swappable.

l

Replacing a PMU takes about 5 minutes.

l

The position of the PMU varies with the base station type. Table 9-1 describes the positions of the PMU. Figure 9-18 shows the positions of the PMU.

Context



191



Table 9-1 Positions of the PMU Base Station


Reference

BTS3900A (Ver.B)

EPS 01A/01C in an APM30H (Ver.B)

Components of an EPS 01

BTS3900A (Ver.C)

EPU03A-02/04 in an APM30H (Ver.C)


BTS3900 (Ver.B)

EPS4890 in a BTS3900 (Ver.B) cabinet

Components of an EPS4890

BTS3900 (Ver.C)

ETP48150-A3 in a BTS3900 (Ver.C) cabinet

Components of an ETP48150-A3

DBS3900

l EPS4890 in an IMB03

l Components of an EPS4890

l EPS 01B/01D in an APM30H (Ver.B)

l Components of an EPS 01 l Components of an EPU03A

l EPU03A-03/05 in an APM30H (Ver.C)



192



Figure 9-18 Positions of the PMU




193



NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Remove the faulty PMU, as shown in the following figure. 1.

Record the cable connections on the panel of the PMU to be replaced.

2.

Disconnect the cables from the PMU.

NOTICE When plugging or unplugging the DB50 connector of the environment monitoring signal cable, you must press the latches on both sides of the DB50 connector and plug or unplug the connector perpendicularly to or from the PMU panel to to avoid bending of pins, which causes alarms. 3.

Use a Phillips screwdriver to remove the two screws from the handle on the panel of the PMU.

4.

Gently pull the handle to slide the PMU out of the subrack and remove the PMU from the subrack. Figure 9-19 Removing the PMU

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



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Figure 9-20 Position of the DIP switch

NOTE

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

Step 4 Install the new PMU, as shown in the following figure. 1.

Place the new PMU in the corresponding slot, use a Phillips screwdriver to loosen the screws on the handle on the panel of the new PMU, and raise the handle.

2.

Slide the new PMU along the guide rails into the subrack until it snaps shut, and lower the handle.

3.

Tighten the two screws on the handle.

4.

Reconnect the cables to the new PMU according to the cable connection records.



195



Figure 9-21 Installing the PMU

Step 5 Check the status of indicators on the new PMU to determine whether the new PMU is working properly. When the new PMU is working properly, the RUN indicator is blinking green (on for 1s and off for 1s) and the ALM indicator is steady off. Step 6 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End



l


l


9.6 Replacing a PSU (EPW25-24S48D) This section describes the procedure for replacing a PSU (EPW25-24S48D) that is installed in an EPS24S48100DC in a BTS3900 (Ver.B) cabinet, an APM30H (Ver.B) cabinet, or an IMB03 cabinet. PSU (EPW25-24S48D) is shortened to PSU in this section.



196



Prerequisites l


l


l


l


l


l

Replacing a PSU takes about 3 minutes.

l

The following figure shows the positions of the PSU in a BTS3900 (Ver.B) cabinet, an APM30H (Ver.B) cabinet, and an IMB03 cabinet.

Context





197



Step 2 Remove the faulty PSU, as shown in the following figure. 1.

Use a screwdriver to loosen the screws on the ejector lever on the panel of the PSU.

2.

Gently pull the ejector lever to slide the PSU out of the subrack and remove the PSU from the subrack.

Figure 9-23 Removing the PSU


Use a screwdriver to loosen the screws on the ejector lever of the PSU, and raise the ejector lever.

2.

Slide the new PSU along the guide rails into the subrack until it snaps shut, and lower the ejector lever.

3.

Tighten the screws on the ejector lever. Figure 9-24 Installing the PSU



198



Step 4 Check the status of indicators on the new PSU to determine whether the new PSU is working properly. When the new PSU is working properly, the power indicator is steady green, and the protection indicator and alarm indicator are steady off. Step 5 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End



l


l


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

Prerequisites l


l


l


l


l


l

Replacing a PSU takes about 3 minutes.

l

The position of the PSU varies with the base station type. Table 9-2 describes the positions of the PSU. Figure 9-25 shows the positions of the PSU.

Context

Table 9-2 Positions of the PSU Base Station


Reference

BTS3900A (Ver.B)

EPS 01A/01C in an APM30H (Ver.B)

l Components of an EPS 01

BTS3900 (Ver.B)


l Components of an EPS4890

EPS4890 in a BTS3900 (Ver.B) cabinet


199



Base Station


DBS3900

EPS4890 in an IMB03

Reference

EPS 01B/01D in an APM30H (Ver.B)





200



NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Remove the faulty PSU, as shown in the following figure. 1.

Use a screwdriver to loosen the screws on the ejector lever on the panel of the PSU.

2.

Gently pull the ejector lever to slide the PSU out of the subrack and remove the PSU from the subrack.

Figure 9-26 Removing the PSU


Use a screwdriver to loosen the screws on the ejector lever of the PSU, and raise the ejector lever.

2.

Slide the PSU along the guide rails into the subrack until it snaps shut, and lower the ejector lever.

3.

Tighten the screws on the ejector lever.



201



Figure 9-27 Installing the PSU

Step 4 Check the status of indicators on the new PSU to determine whether the new PSU is working properly. When the new PSU is working properly, the power indicator is steady green, and the protection indicator and alarm indicator are steady off. Step 5 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End



l


l



Prerequisites l


l




202



Context l


l


l


l


l

The following figure shows the positions of the DCDU in an OMB and the DCDU in an IMB03. Figure 9-28 DCDUs in an OMB and an IMB03

Procedure Step 1 Put on an ESD wrist strap or a pair of ESD gloves. Issue Draft C (2014-03-26)


203



NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Modify the administrative state and block all cells managed by the BBU powered by the DCDU to be replaced and all RRUs powered by the DCDU. For detailed operations, see 5.2 Replacing the BBU Case and RRU Hardware Maintenance Guide. Step 3 Optional: Before replacing a DCDU-03B or DCDU-11B, record the status of circuit breakers SW0 to SW9 on the DCDU, and set all the circuit breakers to OFF. If a DCDU-12B is to be replaced, skip this step. Step 4 Turn off the DCDU circuit breaker on the external power device. Step 5 Record the installation positions (DC output ports) of all connectors on the DCDU, and remove the connectors. Step 6 Use a Phillips screwdriver to remove the protective cover for the DC input wiring terminal block from the DCDU. Step 7 Disconnect cables from the DCDU, as shown in the following figure. Figure 9-29 Disconnecting the cables




204







205




Normal Status








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10

10 Replacing the Components in a 19-Inch Rack

Replacing the Components in a 19-Inch Rack

About This Chapter This chapter describes the procedure and precautions for replacing the components in a 19-inch rack. 10.1 Replacing a DCDU-03B, DCDU-11B, or DCDU-12B When the DBS3900 uses an OMB, IMB03, or 19-inch rack, the DCDU-03B, DCDU-11B, or DCDU-12B (shortened to DCDU in this section) is used to distribute DC power to the BBU and RRUs. This section describes the procedure for replacing a DCDU.



207




Prerequisites l


l


l


l


l


l


l

The following figure shows the positions of the DCDU in an OMB and the DCDU in an IMB03.

Context



208



Figure 10-1 DCDUs in an OMB and an IMB03


NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Modify the administrative state and block all cells managed by the BBU powered by the DCDU to be replaced and all RRUs powered by the DCDU. For detailed operations, see 5.2 Replacing the BBU Case and RRU Hardware Maintenance Guide.



209



Step 3 Optional: Before replacing a DCDU-03B or DCDU-11B, record the status of circuit breakers SW0 to SW9 on the DCDU, and set all the circuit breakers to OFF. If a DCDU-12B is to be replaced, skip this step. Step 4 Turn off the DCDU circuit breaker on the external power device. Step 5 Record the installation positions (DC output ports) of all connectors on the DCDU, and remove the connectors. Step 6 Use a Phillips screwdriver to remove the protective cover for the DC input wiring terminal block from the DCDU. Step 7 Disconnect cables from the DCDU, as shown in the following figure. Figure 10-2 Disconnecting the cables




210







211




Normal Status








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212


11 Replacing the Components in a TP48600A

11

Replacing the Components in a TP48600A

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



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12

12 Replacing Components in the IBC10

Replacing Components in the IBC10

About This Chapter This chapter describes the procedure and precautions for replacing components in an IBC10. 12.1 Replacing a DCDU-12C This section describes the procedure for replacing a DCDU-12C (DCDU for short). 12.2 Replacing the ELU This section describes the procedure and precautions for replacing an electronic label unit (ELU). 12.3 Replacing a Temperature Sensor at the Air Intake Vent of the BBU This section describes the procedure and precautions for replacing a temperature sensor at the air intake vent of the BBU. 12.4 Replacing an FAU03D-02 If an FAU03D-02 is faulty and cannot be repaired in time, replace it. 12.5 Replacing a Fuse This section describes the procedure and precautions for replacing a fuse.



214



12.1 Replacing a DCDU-12C This section describes the procedure for replacing a DCDU-12C (DCDU for short).

Prerequisites l

The following tools and materials are available: an ESD wrist strap or a pair of ESD gloves, a Phillips screwdriver, a pair of diagonal pliers, and an ESD box or bag.

l


l


l


l

Replacing a DCDU interrupts all the services carried by the RRUs that are powered by the DCDU.

l

It takes about 20 minutes to replace a DCDU.

l

The following figure shows the position of the DCDU in an IBC10 DC cabinet.

Context



215



Figure 12-1 Position of a DCDU

(1) DCDU-12C




216



NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Modify the administration state and block all RRUs that are powered by the DCDU to be replaced. For details, see RRU Hardware Maintenance Guide. Step 3 In an IBC10 DC cabinet, turn off the power switch on the external power equipment that provides power for the DCDU-12C. In an IBC10 AC cabinet, set the RFC1 and RFC0 circuit breakers on the EPU05A to OFF. Step 4 Record the positions of DC output terminals or connectors on the DCDU. Then remove the terminals or connectors. Step 5 Use a Phillips screwdriver to remove the protective cover for the DC input wiring terminal block from the DCDU, as shown in the following figure. Figure 12-2 Removing the protective cover for the DC input wiring terminal block from the DCDU

Step 6 Record the connection of the DC input power cables, and disconnect the power cables. Step 7 Use a Phillips screwdriver to remove the two screws from each side of the DCDU, and gently pull the DCDU out of the cabinet along the guide rails. Step 8 Place the new DCDU on the installation position, and push it into the cabinet along the guide rails. Use two M6 captive screws on each side of the DCDU to secure the DCDU to 2 N·m (17.7 lbf·in.). Step 9 Remove the protective cover for the DC input wiring terminal block from the new DCDU, reconnect the power cables to the DC input wiring terminal block of the new DCDU according to the recorded positions, and then reinstall the protective cover. Issue Draft C (2014-03-26)


217



Step 10 Reinstall the power cable connectors removed in Step 4 to the DCDU. Step 11 Turn on the external power switch for the DCDU that is turned off in Step 3. Step 12 Check whether the DCDU is providing power properly by observing the indicator status on the BBU powered by the DCDU according to the following checklist. Table 12-1 Checklist Item

Normal Status

If No.0 DCDU-12C is replaced, check the indicator status on the FMUEA in the FAU03D-02. For the indicator status, see Fan Assembly (FAU03D-02).

l The RUN indicator is blinking green (on for 0.125s and off for 0.125s or on for 1s and off for 1s).

l If No.1 DCDU-12C is replaced, check the indicator status on the upper BBUs.

l UPEU: The RUN indicator is steady on.

l If No.2 DCDU-12C is replaced, check the indicator status on the lower BBUs.

l ALM indicator: steady off

l FAN: The STATE indicator is blinking green (on for 1s and off for 1s). l The normal status of the indicators on the BBU is as follows: RUN indicator: blinking green (on for 1s and off for 1s) ALM indicator: steady off ACT indicator: steady on




l


l


12.2 Replacing the ELU This section describes the procedure and precautions for replacing an electronic label unit (ELU).

Prerequisites l


l

The type of the PSU to be replaced is confirmed according to Querying the Electronic Label of the Cabinet, and a new PSU is available.



218



l


l


l

It takes about 5 minutes to replace an ELU.

l

The following figure shows the position of the ELU in a cabinet.

Context

Figure 12-3 Position of the ELU in a cabinet

(1) ELU



219




NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or ESD gloves, to prevent electrostatic damage to the boards, modules, or electronic components. Step 2 Remove the faulty ELU. 1.

Remove the connector in the SENSOR port on the FAU03D-02 and put the connector on the sensor through the cable hole at the rear of the cabinet to the front of the cabinet, as shown in the following figure. Figure 12-4 Removing the connector from the temperature sensor on the FAU03D-02

2.

Use a Phillips screwdriver to remove the four M6 screws from the air deflector and remove the air deflector, as shown in the following figure.



220



Figure 12-5 Removing the air deflector

3.

Remove the RJ45 connector from the ELU.

4.

Use a Phillips screwdriver to remove the two M4x8 screws on the ELU. Figure 12-6 Removing a faulty ELU

Step 3 Install a new ELU. Issue Draft C (2014-03-26)


221



1.

Place the new ELU on the installation position, and use two M4x8 screws to secure the ELU to 1.2 N·m (3.10 lbf·in.).

2.

Connect the RJ45 connector to the port on the ELU.

3.

Put the cable removed in Step 2.1 through the cable hole at the rear of the air deflector and then put it through the cable hole at the rear of the cabinet.

NOTICE When routing a cable, prevent it from pressing any other cables. 4.

Use a Phillips screwdriver to secure the four M6 screws removed from the air deflector onto the cabinet to 4.8 N·m (42.48 lbf·in.).

5.

Connect one end of the cable for the temperature sensor at the rear of the cabinet with an RJ45 connector to the SENSOR port on the FAU03D-02.




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12.3 Replacing a Temperature Sensor at the Air Intake Vent of the BBU This section describes the procedure and precautions for replacing a temperature sensor at the air intake vent of the BBU.

Prerequisites l


l


l


l


l

It takes about 5 minutes to replace a temperature sensor at the air intake vent of the BBU.

l

The following figure shows the position of the sensor at the air intake vent of the BBU.

Context



222



Figure 12-7 Position of the temperature sensor at the air intake vent of the BBU in a cabinet

(1) Temperature sensor at the air intake vent of the BBU




223



NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or ESD gloves, to prevent electrostatic damage to the boards, modules, or electronic components. Step 2 Remove the temperature sensor at the air intake vent of the BBU. 1.

Remove the connector in the SENSOR port on the FAU03D-02 and put the connector on the sensor through the cable hole at the rear of the cabinet to the front of the cabinet, as shown in the following figure. Figure 12-8 Removing the connector from the temperature sensor on the FAU03D-02

2.

Use a Phillips screwdriver to remove the four M6 screws from the air deflector and remove the air deflector, as shown in the following figure. Figure 12-9 Removing the air deflector



224



3.

Remove the RJ45 connector and 4-pin connector for the temperature sensor at the air intake vent of the BBU.

4.

Use a Phillips screwdriver to remove the two M4x8 screws on the temperature sensor at the air intake vent of the BBU. Figure 12-10 Removing the temperature sensor at the air intake vent of the BBU

Step 3 Install a new temperature sensor at the air intake vent of the BBU. 1.

Place the new temperature sensor on the installation position, and use two M4x8 screws to secure the temperature sensor to 1.2 N·m (3.10 lbf·in.).

2.

Insert the RJ45 connector and 4-pin connector into the port on the temperature sensor at the air intake vent of the BBU.

3.

Put the cable removed in Step 2.1 through the cable hole at the rear of the air deflector and then put it through the cable hole at the rear of the cabinet.

NOTICE When routing a cable, prevent it from pressing any other cables. 4.

Place the air deflector into its original position and use a Phillips screwdriver to tighten the four M6 screws on the air deflector to 4.8 N·m (42.48 lbf·in.).

5.

Reconnect the end of the cable for the temperature sensor at the rear of the cabinet with an RJ45 connector to the SENSOR port on the FAU03D-02.



225






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12.4 Replacing an FAU03D-02 If an FAU03D-02 is faulty and cannot be repaired in time, replace it.

Prerequisites l


l


l


l


l

It takes about 5 minutes to replace an FAU03D-02.

l

The following figure shows the position of the FAU03D-02 in a cabinet.

Context



226



Figure 12-11 Position of the FAU03D-02 in a cabinet

(1) FAU03D-02




227



NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or ESD gloves, to prevent electrostatic damage to the boards, modules, or electronic components. Step 2 Record the positions to which cables for the FAU03D-02 are connected and remove the cable connectors from the FAU03D-02. Step 3 Use a Phillips screwdriver to loosen the four M6 screws on the FAU03D-02 and pull out the faulty FAU03D-02, as shown in the following figure. Figure 12-12 Removing the FAU03D-02

Step 4 Install the new FAU03D-02, as shown in the following figure. 1.

Use both hands to hold the FAU03D-02, keeping the side with the FAU03D-02 silkscreen outwards and the port of the cable leftwards, and place the bottom of the FAU03D-02 on the bent edge of the installation plate.

2.

Use a torque screwdriver to tighten the four captive screws on the installation plate of the FAU03D-02 to 2 N·m (17.7 lbf·in.).



228



Figure 12-13 Installing the new FAU03D-02

Step 5 Connect the power cable and monitoring cable for the FAU03D-02 to the corresponding ports. Step 6 Check the status of the indicators to determine whether the FAU03D-02 is working properly. For details about the status of the indicators, see Fan Assembly (FAU03D-02). Step 7 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End



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12.5 Replacing a Fuse This section describes the procedure and precautions for replacing a fuse.

Prerequisites l

Required tools and materials are available, including an ESD wrist strap or a pair of ESD gloves, and an ESD box or bag.

l

The quantities and types of fuses to be replaced are confirmed, and the require fuses are available.



229


l



Context

NOTICE l Replacing a fuse on the power input port for the BBU interrupts all services carried by the base station. l Replacing a fuse interrupts all services carried by the corresponding module. l The current derating proportion of the fuse varies with the ambient temperature. At temperatures of 25°C (77ºF), the current of a fuse must be equal to or lower than 75% of the rated current. l The fuse can be replaced only with a spare part provided by Huawei. l

When the indicator on the fuse base is steady on, the fuse is faulty and must be replaced.

l

The fuse is hot-swappable.

l

The position of the fuse varies with the type of the IBC10 cabinet. Table 1 describes the positions of the fuse. Figure 1 shows the positions of the fuse. Table 12-2 Position of the fuse Cabinet Type


Legend

IBC10 DC

DCDU-12C in the IBC10 DC cabinet

Figure 12-14 shows the installation positions of the fuse and spare fuse box.

Figure 12-14 Positions of the fuse and spare fuse box in the DCDU-12C

(1) Fuses


(2) Spare fuse box


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NOTICE Take proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESD gloves, to prevent electrostatic damage to the boards, modules, or other electronic components. Step 2 Turn off the power switch for the component whose power supply is controlled by the fuse to be replaced. If there is no power switch, you can disconnect the power cable connected to the component. Step 3 Take out a new fuse from the spare fuse box and check that the current of the fuse meets the requirement, as shown in the following figure. NOTE

The spare fuse box provides five 5 A fuses and three 30 A fuses.

Figure 12-15 Taking out a new fuse

(1) Fuses

Step 4 Replace the fuse. 1.

Pivot the ejector lever under the fuse terminal outwards, remove the fuse base, and remove the fuse from the base, as shown in the following figure.



231



Figure 12-16 Removing a faulty fuse

2.

Insert the new fuse into the fuse base, insert the fuse base into the fuse terminal, and ensure that the fuse base is installed securely, as shown in the following figure. Figure 12-17 Replacing a fuse

Step 5 Turn on the power switch turned off in Step 2 and checking whether the indicator on the fuse terminal block is off. Then determine whether the new fuse works properly according to the status of the corresponding component. Step 6 Take off the ESD wrist strap or ESD gloves, and pack up all tools. ----End



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13 Replacing an RRU

13

Replacing an RRU

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



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