Huawei Technologies AAU3940 Active Antenna Unit User Manual Hardware Maintenance Guide

Huawei Technologies Co.,Ltd Active Antenna Unit Hardware Maintenance Guide

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HardwareMaintenanceGuide.pdf

AAU3940Hardware Maintenance GuideIssue 01Date 2015-01-15HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2015. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respective holders. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees or representationsof any kind, either express or implied.The information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied. Huawei Technologies Co., Ltd.Address: Huawei Industrial BaseBantian, LonggangShenzhen 518129People's Republic of ChinaWebsite: http://www.huawei.comEmail: support@huawei.comIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.i
About This DocumentOverviewThis document describes routine maintenance for an AAU3940 such as equipment maintenanceand power-on and power-off operations. It also describes how to replace the AAU, modules init, and optical modules.Product VersionThe following table lists the product versions related to this document.Product Name Solution Version Product VersionDBS3900 lSRAN10.0 and laterlRAN17.0 and laterleRAN8.0 and laterV100R010C00 and later Intended AudienceThis document is intended for:lBase station installation personnellSystem engineerlSite maintenance personnelOrganization1 Changes in AAU3940 Hardware Maintenance GuideThis chapter describes changes in AAU3940 Hardware Maintenance Guide.2 Routine Hardware Maintenance ItemsRoutine hardware maintenance for an AAU improves reliability of the AAU. You are advisedto perform routine hardware maintenance yearly.3 Powering On and Powering Off an AAUAAU3940Hardware Maintenance Guide About This DocumentIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.ii
This section describes the process and precautions for powering on and powering off an AAU.4 Replacing an AAUThis section describes how to replace a faulty AAU. Replacing an AAU interrupts all the servicescarried by the AAU and causes alarms.5 Replacing the Optical ModuleYou must disconnect the fiber optic cable from an optical module before replacing the opticalmodule. Disconnecting the fiber optic cable interrupts transmission of CPRI signals.ConventionsSymbol ConventionsThe symbols that may be found in this document are defined as follows.Symbol DescriptionIndicates an imminently hazardous situation which, if notavoided, will result in death or serious injury.Indicates a potentially hazardous situation which, if notavoided, could result in death or serious injury.Indicates a potentially hazardous situation which, if notavoided, may result in minor or moderate injury.Indicates a potentially hazardous situation which, if notavoided, could result in equipment damage, data loss,performance deterioration, or unanticipated results.NOTICE is used to address practices not related to personalinjury.Calls attention to important information, best practices andtips.NOTE is used to address information not related to personalinjury, equipment damage, and environment deterioration. General ConventionsThe general conventions that may be found in this document are defined as follows.Convention DescriptionTimes New Roman Normal paragraphs are in Times New Roman.Boldface Names of files, directories, folders, and users are inboldface. For example, log in as user root.AAU3940Hardware Maintenance Guide About This DocumentIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.iii
Convention DescriptionItalic Book titles are in italics.Courier New Examples of information displayed on the screen are inCourier New. Command ConventionsThe command conventions that may be found in this document are defined as follows.Convention DescriptionBoldface The keywords of a command line are in boldface.Italic Command arguments are in italics.[ ] Items (keywords or arguments) in brackets [ ] are optional.{ x | y | ... } Optional items are grouped in braces and separated byvertical bars. One item is selected.[ x | y | ... ] Optional items are grouped in brackets and separated byvertical bars. One item is selected or no item is selected.{ x | y | ... }*Optional items are grouped in braces and separated byvertical bars. A minimum of one item or a maximum of allitems can be selected.[ x | y | ... ]*Optional items are grouped in brackets and separated byvertical bars. Several items or no item can be selected. GUI ConventionsThe GUI conventions that may be found in this document are defined as follows.Convention DescriptionBoldface Buttons, menus, parameters, tabs, window, and dialog titlesare in boldface. For example, click OK.>Multi-level menus are in boldface and separated by the ">"signs. For example, choose File > Create > Folder. Keyboard OperationsThe keyboard operations that may be found in this document are defined as follows.AAU3940Hardware Maintenance Guide About This DocumentIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.iv
Format DescriptionKey Press the key. For example, press Enter and press Tab.Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt+A means the three keys should be pressed concurrently.Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A meansthe two keys should be pressed in turn. Mouse OperationsThe mouse operations that may be found in this document are defined as follows.Action DescriptionClick Select and release the primary mouse button without movingthe pointer.Double-click Press the primary mouse button twice continuously andquickly without moving the pointer.Drag Press and hold the primary mouse button and move thepointer to a certain position.AAU3940Hardware Maintenance Guide About This DocumentIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.v
ContentsAbout This Document.....................................................................................................................ii1 Changes in AAU3940 Hardware Maintenance Guide............................................................12 Routine Hardware Maintenance Items.....................................................................................23 Powering On and Powering Off an AAU.................................................................................43.1 Powering on an AAU.....................................................................................................................................................53.2 Powering off an AAU.....................................................................................................................................................64 Replacing an AAU.........................................................................................................................85 Replacing the Optical Module..................................................................................................16AAU3940Hardware Maintenance Guide ContentsIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.vi
1 Changes in AAU3940 HardwareMaintenance GuideThis chapter describes changes in AAU3940 Hardware Maintenance Guide.01 (2015-01-15)This is the first commercial release.Compared with issue Draft A (2014-10-30), no information is added to or deleted from this issue.Compared with issue Draft A (2014-10-30), this issue includes the following changes.Topic Change DescriptionEntire document Some figure updates caused by the structuremodification of the AAU. Draft A (2013-10-30)This is a draft.AAU3940Hardware Maintenance Guide 1 Changes in AAU3940 Hardware Maintenance GuideIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.1
2 Routine Hardware Maintenance ItemsRoutine hardware maintenance for an AAU improves reliability of the AAU. You are advisedto perform routine hardware maintenance yearly.DANGERWhile working at heights, be careful not to drop any tools, equipment, or other objects. Fallingobjects may cause serious injury or death. Always wear a helmet and avoid standing in the dangerarea.The items in the following checklist are not mandatory but strongly recommended.Table 2-1 AAU routine hardware maintenance itemsNo. Item1All AAUs are intact and securely installed, with all modules in the AAUs securelyinstalled.2 All RF cables are free from wear, cuts, cracks, or other damage.3 All RF cable connectors are sealed and waterproofed properly.4 All RF cable conduits are in good condition.5 All power cables are free from wear, cuts, cracks, or other damage.6 All power cable connectors are in good condition.7 All power cable conduits are in good condition.8 All shield layers of power cables are in good condition.9 All power cables are sealed properly.10 All CPRI fiber optic cables are free from wear, cuts, cracks, or other damage.11 All screws on the cover plate of the maintenance cavity are tightened.AAU3940Hardware Maintenance Guide 2 Routine Hardware Maintenance ItemsIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.2
No. Item12 All RET cables (optional) are free from wear, cuts, cracks, or other damage.13 All RET cable (optional) connectors are sealed properly. If any of the statements in the checklist cannot be complied with, perform the followingcorrective actions:1. Tighten all connections.2. Report any other faults found during the checking, because further repairs on towers canbe performed only by trained and technically-qualified field engineers.AAU3940Hardware Maintenance Guide 2 Routine Hardware Maintenance ItemsIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.3
3 Powering On and Powering Off an AAUAbout This ChapterThis section describes the process and precautions for powering on and powering off an AAU.3.1 Powering on an AAUThis section describes the procedure and precautions for powering on an AAU.3.2 Powering off an AAUAn AAU can be powered off in two ways: normal power-off and emergency power-off. Youmust power off the AAU in a normal situation such as moving the equipment or anticipating aterritorial blackout. You must also power off the AAU in an emergency such as a fire, smoke,or water damage.AAU3940Hardware Maintenance Guide 3 Powering On and Powering Off an AAUIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.4
3.1 Powering on an AAUThis section describes the procedure and precautions for powering on an AAU.ContextDANGERlBefore powering on a base station, check that the positive and negative wires of all powercables are correctly connected. Any incorrect power cable connection may cause damage toequipment or unexpected injuries of human body.lExercise caution when performing a power-on check, which involves high voltageoperations. Direct contact with the input voltage or indirect contact with the input voltageusing a damp object may be fatal.NOTICElAfter unpacking the RU, you must power on it within 24 hours. If you power off the RU formaintenance, you must restore power to the RU within 24 hours.lKeep a minimum of 7.35 m (24.11 ft) away from the front of the AAU after the RU is poweredon and the AAU starts working.ProcessThe following figure shows the process of powering on an AAU.AAU3940Hardware Maintenance Guide 3 Powering On and Powering Off an AAUIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.5
Figure 3-1 Process of powering on an AAU NOTElThe normal input voltage of an AAU is 220 V AC and should range from 200 V AC to 240 V AC.lWhen an AAU is working properly, the RUN indicator is blinking (on for 1s and off for 1s), and the ALMindicator is steady off. For details about indicators, see AAU3940 Hardware Description.3.2 Powering off an AAUAn AAU can be powered off in two ways: normal power-off and emergency power-off. Youmust power off the AAU in a normal situation such as moving the equipment or anticipating aterritorial blackout. You must also power off the AAU in an emergency such as a fire, smoke,or water damage.ProcedurelNormal power-off1. Set the corresponding circuit breaker on the power equipment for the AAU to OFF.lEmergency power-offNOTICEEmergency power-off may damage the AAU. Therefore, do not perform an emergencypower-off in normal cases.AAU3940Hardware Maintenance Guide 3 Powering On and Powering Off an AAUIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.6
1. Shut off the external input power of the power equipment for the AAU.2. If time permits, set the corresponding circuit breaker on the power equipment for theAAU to OFF.----EndAAU3940Hardware Maintenance Guide 3 Powering On and Powering Off an AAUIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.7
4 Replacing an AAUThis section describes how to replace a faulty AAU. Replacing an AAU interrupts all the servicescarried by the AAU and causes alarms.PrerequisiteslThe 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, a hex key, and an ESDbox or bag.lThe new component is intact, and its hardware version is the same as that of the componentto be replaced.ProcedureStep 1 Put on an ESD wrist strap or ESD gloves.NOTICETake proper ESD protection measures, for example, put on an ESD wrist strap or ESD gloves,to prevent electrostatic damage to the boards, modules, or electronic components.Step 2 Instruct the U2000 administrator to block the faulty AAU by running the BLK BRD command.Step 3 Power off the AAU. For detailed operations, see 3.2 Powering off an AAU.Step 4 Remove cables from the faulty AAU.1. Optional: If the AAU is installed on a pole top, remove the landscaping cover, as shownin the following figure. Skip this step if the AAU is installed on a pole or wall.AAU3940Hardware Maintenance Guide 4 Replacing an AAUIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.8
Figure 4-1 Removing the landscaping cover from the AAU 2. Loosen the screws on the cover of the maintenance cavity, and open the cover.3. Record cable connections on the AAU and remove all cables, including the power cable,CPRI fiber optic cable, and PGND cable.NOTElIf the AAU is installed on a pole or a wall, the PGND cable connects to the ground bolt on theattachment plate. In this case, remove the PGND cable.lIf the AAU is installed on a pole top, the PGND cable connects to the ground bolt on the mountingsupport. In this case, do not remove the PGND cable.4. Use an M6 inner hexagon torque screwdriver to tighten the screws on the maintenancecavity, and close the cover.Step 5 Remove the faulty AAU.AAU3940Hardware Maintenance Guide 4 Replacing an AAUIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.9
lIf the AAU is installed on a pole or wall, use a torque screwdriver to loosen the captivebolts on the attachment plate and remove the AAU with both hands, as shown in Figure4-2.lIf the AAU is installed on a pole top, use a torque screwdriver to loosen the four boltssecuring the AAU, and remove the AAU with both hands, as shown in Figure 4-3.Figure 4-2 Removing an AAU from a Pole or Walla: Pole installation scenario b: Wall mounting scenario AAU3940Hardware Maintenance Guide 4 Replacing an AAUIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.10
Figure 4-3 Removing an AAU from a Pole Top Step 6 Install a new AAU.lIn the pole installation or wall mounting scenario:1. Place the attachment plate on the maintenance cavity of the AAU, and use a torquescrewdriver to tighten the screws to 7 N·m (61.95 lbf·in.), as shown in Figure 4-4.2. Insert the attachment plate at the bottom of the AAU to the dovetail groove on themounting bracket, and use a torque screwdriver to tighten the captive screws to 7 N·m(61.95 lbf·in.), as shown in Figure 4-5.AAU3940Hardware Maintenance Guide 4 Replacing an AAUIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.11
Figure 4-4 Installing the attachment plate NOTEThe following figure shows the installation in the wall mounting scenario, installing an AAU on a pole isthe same.AAU3940Hardware Maintenance Guide 4 Replacing an AAUIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.12
Figure 4-5 Securing the AAU lIn the pole top installation scenario:1. Hold the AAU tightly with both hands and insert it into the mounting bracket on thepole top, and use four M6 hexagon socket-head cap bolts to secure the AAU to 7 N·m(61.95 lbf·in.), as shown in the following figure.2. Install the landscaping cover.AAU3940Hardware Maintenance Guide 4 Replacing an AAUIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.13
Figure 4-6 Installing an AAU on a pole top Step 7 Install AAU cables.1. Open the cover for the maintenance cavity of the AAU.2. Reconnect cables to the AAU according to the previous record, and ensure that waterproofblocks are inserted into vacant ports.3. Close the cover for the maintenance cavity of the AAU.Step 8 Set the corresponding circuit breaker on the power equipment for the AAU to ON.AAU3940Hardware Maintenance Guide 4 Replacing an AAUIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.14
NOTEThe status of indicators on an AAU that works normally is as follows:lRUN indicator: blinkinglALM indicator: steady offlACT indicator: steady onFor details about indicators, see section "Ports and Indicators" in AAU3940 Hardware Description.Step 9 Take off the ESD wrist strap or ESD gloves, and pack up all tools.Step 10 Inform the remote engineer that the AAU has been replaced.----EndFollow-up ProcedurelPlace the replaced component into an ESD box or bag. Then, place the ESD box or baginto a foam-padded carton or the packing box of the new module.lComplete the fault form with detailed information about the replaced component.lContact the local Huawei office to handle the faulty component.AAU3940Hardware Maintenance Guide 4 Replacing an AAUIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.15
5 Replacing the Optical ModuleYou must disconnect the fiber optic cable from an optical module before replacing the opticalmodule. Disconnecting the fiber optic cable interrupts transmission of CPRI signals.PrerequisiteslTo confirm the type of a faulty module, perform the following steps:–Run the DSP BTSOPTMODULE command on the BSC LMT.–Run the DSP OPTMODULE command on the NodeB LMT.–Run the DSP SFP command on the eNodeB LMT.–Identify the type of the faulty module according to the values of Rate, Wavelength,and Transmission mode in the output information of the command, and obtain a newoptical module of the same type as the faulty one. The type of a new optical module isidentified by the label on the new module. The following figure shows the label on anoptical module.Figure 5-1 Label on an optical module(1) Maximum rate (2) Wavelength (3) Transmission mode lThe type and number of optical modules to be replaced are confirmed, and new opticalmodules are ready.lRequired tools and materials are available, including an ESD box or bag, and ESD gloves.ContextlOptical modules are inserted into the RX TX CPRI0 and RX TX CPRI1 ports on an AAU.AAU3940Hardware Maintenance Guide 5 Replacing the Optical ModuleIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.16
lOptical modules are hot-swappable.lIt takes about five minutes to replace an optical module on the AAU, which involvesdisconnecting the fiber optic cable, removing the faulty optical module, inserting a newoptical module, reconnecting the fiber optic cable, and waiting for CPRI links to restore.ProcedureStep 1 Put on an ESD wrist strap or a pair of ESD gloves.NOTICETake proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESDgloves, to prevent electrostatic damage to the boards, modules, or other electronic components.Step 2 Record the connections of the optical module and fiber optic cable.Step 3 Press the latch on the optical connector, and then remove the connector from the faulty opticalmodule, as shown in the following figure.Figure 5-2 Removing the cablesCAUTIONDo not look into the optical module without eye protection after removing the fiber optic cablefrom the optical module. Step 4 Lower the puller on the faulty optical module, and then pull the puller until the optical moduleis removed from the AAU.Step 5 Install a new optical module into the AAU according to the label on the module.NOTEThe optical modules to be installed must match CPRI rates.AAU3940Hardware Maintenance Guide 5 Replacing the Optical ModuleIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.17
Step 6 Insert the optical connector into the new optical module.Step 7 Check the transmission of CPRI signals by observing the status of CPRI0 and CPRI1 indicators.For details about the status of the indicators, see the ports and indicators on an AAU of relatedmanuals of RRU hardware descriptions.Step 8 Take off the ESD wrist strap or ESD gloves, and pack up all tools.----EndFollow-up ProcedurelPlace the replaced component into an ESD box or bag. Then, place the ESD box or baginto a foam-padded carton or the packing box of the new module.lComplete the fault form with detailed information about the replaced component.lContact the local Huawei office to handle the faulty component.AAU3940Hardware Maintenance Guide 5 Replacing the Optical ModuleIssue 01 (2015-01-15) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.18

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