Huawei Technologies BTS3702E-2500 WiMAX Outdoor Pico Base Station User Manual Site Maintenance Guide Draft

Huawei Technologies Co.,Ltd WiMAX Outdoor Pico Base Station Site Maintenance Guide Draft

User Manual

DBS3900 WiMAXV300R002Site Maintenance Guide Issue 01Date 2009-11-30Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.
Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. For anyassistance, please contact our local office or company headquarters. Huawei Technologies Co., Ltd.Address: Huawei Industrial BaseBantian, LonggangShenzhen 518129People's Republic of ChinaWebsite: http://www.huawei.comEmail: support@huawei.com Copyright © Huawei Technologies Co., Ltd. 2009. 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 the property of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respective holders. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees or representationsof any kind, either express or implied.The information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute the warranty of any kind, express or implied.Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.
ContentsAbout This Document.....................................................................................................................11 Preparations for Site Maintenance.........................................................................................1-12 Tasks of Routine Hardware Maintenance.............................................................................2-12.1 Maintenance of Power Supply System and Grounding System of the BTS3702E.........................................2-22.2 Maintenance of BTS3702E Main Equipment.................................................................................................2-22.3 Maintenance of Cables....................................................................................................................................2-33 Powering On and Powering Off the BTS3702E....................................................................3-13.1 Powering On the BTS3702E...........................................................................................................................3-23.2 Powering Off the BTS3702E..........................................................................................................................3-44 Replacing the BTS3702E Modules..........................................................................................4-15 Replacing the Optical Modules ..............................................................................................5-16 Replacing the Power Modules ................................................................................................6-17 Replacing the BTS3702E Cables..............................................................................................7-17.1 Replacing the Power Cables of the BTS3702E...............................................................................................7-27.2 Replacing the Signal Cables of the BTS3702E...............................................................................................7-37.3 Replacing the Transmission Cables of the BTS3702E...................................................................................7-47.3.1 Replacing the Ethernet Cables...............................................................................................................7-47.3.2 Replacing the Optical Fibers..................................................................................................................7-57.4 Replacing the RF Jumpers of the BTS3702E..................................................................................................7-6DBS3900 WiMAXSite Maintenance Guide (Draft) ContentsIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.i
TablesTable 2-1 Maintenance tasks for the power supply system and grounding system of the BTS3702E.................2-2Table 2-2 Maintenance tasks of the BTS3702E...................................................................................................2-3Table 2-3 Maintenance items for cables...............................................................................................................2-3Table 3-1 Meanings of the BTS3702E indicators................................................................................................3-2DBS3900 WiMAXSite Maintenance Guide (Draft) TablesIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.iii
About This DocumentOverviewAfter completing the deployment and acceptance test of the BTS3702E, Huawei conductsroutine maintenance to ensure that the BTS3702E operates in its optimum capacity.The document describes the tasks of the routine hardware maintenance of the BTS3702E,including the maintenance of the power supply system and grounding system, the maintenanceof the BTS3702E main equipment, and the maintenance of the cables. In addition, the documentprovides guidance for the replacement of modules and cables.VersionThe following table lists the product version related to this document.Product Name VersionBTS3702E V300R002 Intended AudienceThis document is intended for:lSystem engineerslSite maintenance personnelChange HistoryVersion Change History01(2009-11-25) This is the initial release. DBS3900 WiMAXSite Maintenance Guide (Draft) About This DocumentIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.1
Organization1 Preparations for Site MaintenanceThe preparations for the maintenance of the BTS3702E site include obtaining site information,selecting maintenance tasks, and preparing maintenance tools and spare parts.2 Tasks of Routine Hardware MaintenanceThe tasks of the routine hardware maintenance of the BTS3702E include the maintenance of thepower supply system and grounding system, the maintenance of the main equipment of theBTS3702E, and the maintenance of the cables.3 Powering On and Powering Off the BTS3702EWhen maintaining the BTS3702E, you need to power on and power off the BTS3702E. Duringpower-on, check the power supply voltage of the BTS3702E and the states of the indicators onthe BTS3702E. Power off the BTS3702E on a regular basis or in an emergency according toactual requirements.4 Replacing the BTS3702E ModulesThe BTS3702E is an integrated outdoor micro BTS of Huawei WiMAX Micro. Replacing theBTS3702E modules disrupts all services carried by this BTS.5 Replacing the Optical ModulesThe optical module provides an interface for photoelectric conversion, which enables thetransmission between the BTS3702E and other equipment through the optical fiber. It is usedto connect the ASN-GW or cascading connections between the BTSs. Remove the optical fibersfirst when replacing the optical modules. This disrupts the transmission signal.6 Replacing the Power ModulesThe power module is used to shift the power level to enable the transmission between theBTS3702E and other equipment through Ethernet cables. It is used to connect the ASN-GW orcascading connections between the BTSs. Remove the Ethernet cables first when replacing thepower modules. This disrupts the transmission signal .7 Replacing the BTS3702E CablesWhen the BTS3702E cables are faulty, you need to replace them promptly. The cables that canbe replaced are power cables, signal cables, transmission cables, and RF jumpers.ConventionsSymbol ConventionsThe symbols that may be found in this document are defined as follows.Symbol DescriptionIndicates a hazard with a high level of risk, which if notavoided,will result in death or serious injury.OrganizationDBS3900 WiMAXSite Maintenance Guide (Draft)2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.Issue 01 (2009-11-30)
Symbol DescriptionIndicates a hazard with a medium or low level of risk, whichif not avoided, could result in minor or moderate injury.Indicates a potentially hazardous situation, which if notavoided,could result in equipment damage, data loss,performance degradation, or unexpected results.Indicates a tip that may help you solve a problem or savetime.Provides additional information to emphasize or supplementimportant points of the main text. General 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.Italic 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.DBS3900 WiMAXSite Maintenance Guide (Draft) OrganizationIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.3
Convention Description[ 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.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.OrganizationDBS3900 WiMAXSite Maintenance Guide (Draft)4 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.Issue 01 (2009-11-30)
1 Preparations for Site MaintenanceThe preparations for the maintenance of the BTS3702E site include obtaining site information,selecting maintenance tasks, and preparing maintenance tools and spare parts.Obtaining the Site InformationBefore maintaining the BTS3702E site, familiarize yourself with the following informationabout the BTS:lUnsolved faults and alarms of the sitelHardware configuration of the sitelLocal environmentlSpare partsSelecting Maintenance ItemsAccording to the specific condition of the BTS3702E site, you should select proper maintenancetasks, including:lMaintaining the power supply system and grounding system of the BTS3702ElMaintaining the BTS3702E main equipmentlMaintaining the cables of the BTS3702EArranging for Tools and Spare PartsChoose the corresponding tools and spare parts according to the site information andmaintenance tasks of the BTS3702E.The site maintenance tools are:lThe frequency test devices include a signal generator, a spectrum analyzer, andcorresponding connectors and cables.lThe power test devices are used to test and analyze the output power of the BTS3702E.The power meter is often used.lThe antenna and feeder test equipment is used to locate faults and to measure the standingwave ratio, return loss, and cable insertion loss. The SiteMaster is often used.lOther materialsDBS3900 WiMAXSite Maintenance Guide (Draft) 1 Preparations for Site MaintenanceIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.1-1
–Other tools and materials are the multimeter, ESD wrist strap or gloves, screwdriver,ESD box or bag, dust-free cloth, wrench, tape, diagonal plier, and plier.–Ethernet cables for commissioning.–Local maintenance terminal.–Spare parts.NOTEArrange for the tools and components according to the actual conditions of the specific replacement.1 Preparations for Site MaintenanceDBS3900 WiMAXSite Maintenance Guide (Draft)1-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.Issue 01 (2009-11-30)
2 Tasks of Routine Hardware MaintenanceAbout This ChapterThe tasks of the routine hardware maintenance of the BTS3702E include the maintenance of thepower supply system and grounding system, the maintenance of the main equipment of theBTS3702E, and the maintenance of the cables.2.1 Maintenance of Power Supply System and Grounding System of the BTS3702EThis section describes the maintenance tasks, maintenance frequency, operation guidance, andreference standard of the power supply system and grounding system of the BTS3702E.2.2 Maintenance of BTS3702E Main EquipmentThe maintenance tasks of the BTS3702E equipment include checking the surface of theequipment, cleanness of the equipment, and indicators.2.3 Maintenance of CablesThe maintenance tasks of cables include checking the signal cables, the Ethernet cables, theoptical fibers, the connectors, and the sockets.DBS3900 WiMAXSite Maintenance Guide (Draft) 2 Tasks of Routine Hardware MaintenanceIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.2-1
2.1 Maintenance of Power Supply System and GroundingSystem of the BTS3702EThis section describes the maintenance tasks, maintenance frequency, operation guidance, andreference standard of the power supply system and grounding system of the BTS3702E.Table 2-1 lists the maintenance tasks of the power system and grounding system of theBTS3702E.Table 2-1 Maintenance tasks for the power supply system and grounding system of theBTS3702EItem Frequency Operation StandardPower cable Monthly Carefully check theconnections of powercables.The power cables arenot aging, and thereis no corrosion on thejoints.Voltage Monthly Measure the voltageof the power supplyusing a multimeter.Operating voltagerange: -36 V DC to-57 V DC.PGND cable Monthly Check whether thePGND cable andground bar areconnected securely.The joints are secureand corrosion free.Earth resistance Monthly Measure the earthresistance using anelectric earthresistance tester andrecord themeasurement.The groundingresistance is lowerthan 10 ohms. 2.2 Maintenance of BTS3702E Main EquipmentThe maintenance tasks of the BTS3702E equipment include checking the surface of theequipment, cleanness of the equipment, and indicators.Table 2-2 lists the maintenance tasks of the BTS3702E.2 Tasks of Routine Hardware MaintenanceDBS3900 WiMAXSite Maintenance Guide (Draft)2-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.Issue 01 (2009-11-30)
Table 2-2 Maintenance tasks of the BTS3702EItem Frequency Operation StandardEquipment surface Quarterly Check whether thesurface of theequipment isdamaged andwhether the label ofthe equipment islegible.-EquipmentcleanlinessQuarterly Check whether theequipment is clean.-Indicators Monthly Check whether theindicators on theequipment arefunctional.For details on themeanings of theindicators, see 3.1Powering On theBTS3702E. 2.3 Maintenance of CablesThe maintenance tasks of cables include checking the signal cables, the Ethernet cables, theoptical fibers, the connectors, and the sockets.Table 2-3 lists the maintenance items for the cables.Table 2-3 Maintenance items for cablesItem Frequency Operation StandardSignal cables AnnuallyCarefully check theconnection of thesignal cables.lThe signal cables arereliably connected.lThe signal cables areintact.lThe cables can be clearlyidentified through thelabels.Ethernet cables AnnuallyCarefully check theconnection of theEthernet cables.lThe Ethernet cables arereliably connected.lThe Ethernet cables areintact.lThe hubs are intact.lThe cables can be clearlyidentified through thelabels.DBS3900 WiMAXSite Maintenance Guide (Draft) 2 Tasks of Routine Hardware MaintenanceIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.2-3
Item Frequency Operation StandardOptical fibers AnnuallyCheck the connectionsof the optical fibers andoptical modules.lThe optical fibers areintact and reliablyconnected.lThe optical modules areclean and connectedproperly.lThe winding pipes forthe optical fiber areintact.lThe cables can be clearlyidentified through thelabels.RF jumper AnnuallyCarefully check theconnection of the RFjumper.lThe RF jumpers areintact and reliablyconnected.lThe waterproof of the RFjumper connections isperfect.lThe cables can be clearlyidentified through thelabels.Connectors andsockets QuarterlyCheck whether there isany dust or greasy dirton the insulators of theconnectors andsockets.The insulators are clean. 2 Tasks of Routine Hardware MaintenanceDBS3900 WiMAXSite Maintenance Guide (Draft)2-4 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.Issue 01 (2009-11-30)
3 Powering On and Powering Off theBTS3702EAbout This ChapterWhen maintaining the BTS3702E, you need to power on and power off the BTS3702E. Duringpower-on, check the power supply voltage of the BTS3702E and the states of the indicators onthe BTS3702E. Power off the BTS3702E on a regular basis or in an emergency according toactual requirements.3.1 Powering On the BTS3702EThe power supply input of the BTS3702E is -48 V DC. After powering on the BTS3702E,determine the working state of the BTS3702E according to the status of the indicators.3.2 Powering Off the BTS3702EYou can power off the BTS3702E in a normal situation or in an emergency.DBS3900 WiMAXSite Maintenance Guide (Draft) 3 Powering On and Powering Off the BTS3702EIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.3-1
3.1 Powering On the BTS3702EThe power supply input of the BTS3702E is -48 V DC. After powering on the BTS3702E,determine the working state of the BTS3702E according to the status of the indicators.PrerequisitelThe installation of the hardware and cables of the BTS3702E is finished.lThe range of the power supply input of the BTS3702E is from -36 V DC to -57 V DC.ContextCAUTIONThe BTS3702E must be powered on within 24 hours after being unpacked or after being poweredoff for maintenance.ProcedureStep 1 Turn on the power switch of the BTS3702E.DANGERAfter the BTS3702E is powered on, do not look directly at the beam from the optical modulewithout taking the necessary eye-protection measures.Step 2 Wait for three to five minutes and then check the status of the indicators on modules of theBTS3702E. Table 3-1 lists the meanings of the indicators.Table 3-1 Meanings of the BTS3702E indicatorsIndicator Color State DescriptionRUN Green On There is power input, but theboard is faulty.Off There is no power input, or theboard is faulty.Blinking at 4 Hz (on for0.125s and off for 0.125s)The board is being loaded.Blinking at 0.5 Hz (on for1s and off for 1s)The board is workingproperly.3 Powering On and Powering Off the BTS3702EDBS3900 WiMAXSite Maintenance Guide (Draft)3-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.Issue 01 (2009-11-30)
Indicator Color State DescriptionALM Red On An alarm is generated, and theboard needs to be replaced.Blinking at 0.5 Hz (on for1s and off for 1s)An alarm is generated, but youcannot determine that theboard needs to be replaced.This alarm may be generatedby a faulty board or port.Off No fault.TX_ACT Green On The board is workingproperly.Blinking at 0.5 Hz (on for1s and off for 1s)The board is operating, but theantenna port transmits nopower.SFP0 Red and green Green and on The link is functional.Green and blinking Data can be transmitted andreceived over the Ethernetport.Red and on An alarm is generated,indicating that an exceptionoccurs when the opticalmodule receives signals.Off The SFP module is not inposition or is powered off.SFP1 Red and green Green and on The link connected to theEthernet port is functional.Green and blinking Data can be transmitted andreceived over the Ethernetport.Red and on An alarm is generated,indicating that exceptionoccurs when the opticalmodule receives signals.Off The SFP module is not inposition or is powered off.VSWR Red Off No alarm is generated.On An alarm is generated on onlythe A port of the antennasubsystem.DBS3900 WiMAXSite Maintenance Guide (Draft) 3 Powering On and Powering Off the BTS3702EIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.3-3
Indicator Color State DescriptionBlinking at 4 Hz (on for0.125s and off for 0.125s)An alarm is generated on boththe A and B ports of theantenna subsystem.Blinking at 0.5 Hz (on for1s and off for 1s)An alarm is generated on onlythe B port of the antennasubsystem. Step 3 Proceed with the next step according to the status of the indicator.If... Then...The modules of the BTS3702E workproperly.The power-on procedure is complete.The BTS3702E is faulty. Record the faulty status, turn off the powerswitch, rectify the fault, and then go to Step1.----End3.2 Powering Off the BTS3702EYou can power off the BTS3702E in a normal situation or in an emergency.ProcedureStep 1 Determine the method for powering off the BTS3702E according to the actual situation.If... Then...The BTS3702E needs to be powered offwhen you swap the equipment or anticipatea territorial power outage.Power off the BTS3702E in a normal situationby referring to Step 2.The BTS3702E needs to be powered off inan emergency, such as fire, smoke, or waterimmersion,Power off the BTS3702E in an emergency byreferring to Step 3.Step 2 Set the circuit breaker on the auxiliary power supply equipment of the BTS3702E to OFF.Step 3 Cut off the external input power supply for the auxiliary power supply equipment of theBTS3702E. If time permits, ensure that the circuit breaker on the auxiliary power supplyequipment of the BTS3702E is set to OFF.----End3 Powering On and Powering Off the BTS3702EDBS3900 WiMAXSite Maintenance Guide (Draft)3-4 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.Issue 01 (2009-11-30)
4 Replacing the BTS3702E ModulesThe BTS3702E is an integrated outdoor micro BTS of Huawei WiMAX Micro. Replacing theBTS3702E modules disrupts all services carried by this BTS.PrerequisitelCheck the quantity and model of the replaced BTS3702E modules. Prepare the newBTS3702E modules.lRecord the installation position of the BTS3702E modules.lRecord the port positions of all the cables connected to the BTS3702E modules.lPrepare the tool kit.ContextCAUTIONTake proper ESD prevention measures, for example, wear ESD wrist straps or gloves to preventboards, modules, and electronic components from being destroyed by static discharge from thehuman body.NOTESee the BTS3702E Quick Installation Guide to install new BTS3702E modules.ProcedureStep 1 Upload the BTS data configuration file by referring to Manually Backing Up ConfigurationData.Step 2 Power off the BTS3702E and turn off the power switch of the external power supply of theBTS3702E by referring to 3.2 Powering Off the BTS3702E.Step 3 Open the cover of the cabling cavity to disconnect all the cables connected to the BTS3702Emodules and take insulation measures for the cables.Step 4 Move the faulty BTS3702E modules and replace them by new BTS3702E modules.DBS3900 WiMAXSite Maintenance Guide (Draft) 4 Replacing the BTS3702E ModulesIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.4-1
Step 5 Connect all the cables to the new BTS3702E modules and fix the cover of the cabling cavity.Step 6 Turn on the power switch of the external power supply of the BTS3702E and power on theBTS3702E by referring to 3.1 Powering On the BTS3702E.Step 7 Replace the ESN number of the BTS by referring to Detecting BSs Automatically.----EndLater MeasuresCheck the following items after replacing the faulty BTS3702E modules:lThe BTS3702E modules are correctly installed.lAll the cables are correctly connected.lThe BTS3702E is operational after being powered on.Contact the local Huawei office to handle the faulty BTS3702E modules.4 Replacing the BTS3702E ModulesDBS3900 WiMAXSite Maintenance Guide (Draft)4-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.Issue 01 (2009-11-30)
5 Replacing the Optical ModulesThe optical module provides an interface for photoelectric conversion, which enables thetransmission between the BTS3702E and other equipment through the optical fiber. It is usedto connect the ASN-GW or cascading connections between the BTSs. Remove the optical fibersfirst when replacing the optical modules. This disrupts the transmission signal.PrerequisitelCheck the quantity and type of the faulty optical modules and prepare new optical modules.lRecord the installation position and connection points of the faulty optical modules and theoptical fibers.lThe required tools and materials are ready. The tools or materials include the ESD wriststrap or ESD gloves, and the ESD box or bag.ContextlThe optical modules are hot-swappable.lReplacing the BTS3702E optical module involves removing the optical fibers and faultyoptical modules, installing the new optical modules, connecting the optical fibers to theoptical modules, and recovering the links. The operation takes about five minutes.CAUTIONlTake proper ESD prevention measures, for example, wear ESD wrist straps or gloves toprevent boards, modules, and electronic components from being destroyed by static dischargefrom the human body.lAfter removing the optical fibers from the optical modules, do not look directly at the opticalmodules and optical fiber connectors without taking the necessary eye-protection measures.ProcedureStep 1 Press the latch on the connector of the optical fiber connector, and then remove the connectorfrom the faulty optical module.DBS3900 WiMAXSite Maintenance Guide (Draft) 5 Replacing the Optical ModulesIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.5-1
Step 2 Turn the ring-pull on the faulty optical module outwards. Hold the ring-pull and take the faultyoptical module out of the slot to remove it from the BTS3702E.Step 3 Install the new optical modules in the BTS3702E.Step 4 Connect the optical fiber connectors to the new optical modules.Step 5 Check whether the transmission signal is recovered according to the indicators.----EndPostrequisiteContact the local Huawei office to handle the faulty optical modules.5 Replacing the Optical ModulesDBS3900 WiMAXSite Maintenance Guide (Draft)5-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.Issue 01 (2009-11-30)
6 Replacing the Power ModulesThe power module is used to shift the power level to enable the transmission between theBTS3702E and other equipment through Ethernet cables. It is used to connect the ASN-GW orcascading connections between the BTSs. Remove the Ethernet cables first when replacing thepower modules. This disrupts the transmission signal .PrerequisitelCheck the quantity and type of the power modules. Prepare the new power modules.lRecord the installation position and connection points of the faulty power modules and theEthernet cables.lThe required tools or materials are ready. The tools or materials include the ESD wrist strapor ESD gloves, and the ESD box or bag.ContextlThe power modules are hot-swappable.lReplacing the BTS3702E power module involves removing the Ethernet cables and faultypower modules, installing the new power modules, connecting the Ethernet cables to thepower modules, and recovering the links. The operation takes about five minutes.CAUTIONlTake proper ESD prevention measures, for example, wear ESD wrist straps or gloves toprevent boards, modules, and electronic components from being destroyed by static dischargefrom the human body.ProcedureStep 1 Remove the Ethernet cables from the faulty power modules.Step 2 Turn the ring-pull on the faulty power module outwards. Hold the ring-pull and take the faultypower module out of the port to remove it from the BTS3702E.Step 3 Install the new power modules in the BTS3702E.DBS3900 WiMAXSite Maintenance Guide (Draft) 6 Replacing the Power ModulesIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.6-1
Step 4 Connect the Ethernet cables to the new power modules.Step 5 Check whether the transmission signal is recovered according to the indicators.----EndPostrequisiteContact the local Huawei office to handle the faulty power module.6 Replacing the Power ModulesDBS3900 WiMAXSite Maintenance Guide (Draft)6-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.Issue 01 (2009-11-30)
7 Replacing the BTS3702E CablesAbout This ChapterWhen the BTS3702E cables are faulty, you need to replace them promptly. The cables that canbe replaced are power cables, signal cables, transmission cables, and RF jumpers.ContextNOTEContact Huawei engineers in the following conditions:lWhen you want to arrange for devices, cables, and connectors by yourself.lWhen you need to shorten the cable with a specified length.7.1 Replacing the Power Cables of the BTS3702EWhen the power cables of the BTS3702E are faulty, you need to replace them.7.2 Replacing the Signal Cables of the BTS3702EWhen the signal cables of the BTS3702E are faulty, you need to replace them. The BTS3702Esignal cables are monitoring signal cables.7.3 Replacing the Transmission Cables of the BTS3702EThe transmission cables of the BTS3702E are optical fibers and Ethernet cables.7.4 Replacing the RF Jumpers of the BTS3702EThe RF jumper of the BTS3702E is used to receive and transmit the RF signals. When the faultyRF jumper is confirmed, replace the faulty RF jumper.DBS3900 WiMAXSite Maintenance Guide (Draft) 7 Replacing the BTS3702E CablesIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.7-1
7.1 Replacing the Power Cables of the BTS3702EWhen the power cables of the BTS3702E are faulty, you need to replace them.PrerequisitelThe type and model of the faulty power cables are confirmed, and the new power cablesare ready and routed according to the specifications.lThe new cables are in good condition.lThe required tools and materials are ready. The tools and materials are the ESD wrist strapor gloves, Phillips screwdriver, flat-head screwdriver, ESD box or bag, and OT terminals.ContextReplacing the power cables of the BTS3702E may interrupt all the services.Replacing the power cables involves removing the faulty cables and installing the new cables.This operation takes about five minutes.CAUTIONTake proper ESD prevention measures, for example, wear ESD wrist straps or gloves to preventboards, modules, and electronic components from being destroyed by static discharge from thehuman body.ProcedureStep 1 Route the new power cables in the same way as the faulty power cables are routed.Step 2 For details about how to power off the BTS3702E, see 3.2 Powering Off the BTS3702E.Step 3 Remove the faulty power cables from the equipment.Step 4 Install the new power cables.Step 5 Attach engineering labels to the new power cables and ensure that the content on eachengineering label is consistent with that on the original label.Step 6 Bind the new power cables.Step 7 For details about how to power on the BTS3702E, see 3.1 Powering On the BTS3702E.----EndLater MeasuresAfter replacing the faulty power cables, verify that:The cables are correctly and securely connected.Contact the local Huawei office to handle the faulty power cables.7 Replacing the BTS3702E CablesDBS3900 WiMAXSite Maintenance Guide (Draft)7-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.Issue 01 (2009-11-30)
7.2 Replacing the Signal Cables of the BTS3702EWhen the signal cables of the BTS3702E are faulty, you need to replace them. The BTS3702Esignal cables are monitoring signal cables.PrerequisitelThe types, models, and quantity of the faulty signal cables are confirmed, and the newsignal cables are ready.lThe new cables are in good condition.lThe required tools and materials are ready. The tools and materials are the ESD wrist strapor ESD gloves, Phillips screwdriver, flat-head screwdriver, and ESD box or bag.ContextReplacing the BTS3702E signal cables interrupts the signal transmission carried on the signalcables.Replacing the signal cables involves removing the faulty cables, installing the new cables,clearing the alarms generated on the BTS3702E, and resuming the services. This operation takesabout ten minutes.CAUTIONTake proper ESD prevention measures, for example, wear ESD wrist straps or gloves to preventboards, modules, and electronic components from being destroyed by static discharge from thehuman body.ProcedureStep 1 Lead the new signal cables to the peer device along the route of the faulty cables.Step 2 Remove the faulty signal cables from the equipment.Step 3 Connect two ends of new signal cables to the port connected to the faulty signal cables, and thenremove the fault signal cables.Step 4 Attach an engineering label to each new cable. The content on each engineering label should bethe same as that on the replaced cable.Step 5 Bind the new signal cables.----EndLater MeasuresCheck the following items after replacing the faulty signal cables:lThe cables are correctly and securely connected.lAll related alarms are cleared in the alarm management system.DBS3900 WiMAXSite Maintenance Guide (Draft) 7 Replacing the BTS3702E CablesIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.7-3
Contact the local Huawei office to handle the faulty signal cables.7.3 Replacing the Transmission Cables of the BTS3702EThe transmission cables of the BTS3702E are optical fibers and Ethernet cables.7.3.1 Replacing the Ethernet CablesThe Ethernet cables are used to transmit the electric signals between the BTS3702E and theASN-GW, or transmit the electric signals between two cascading BTS3702Es. When theEthernet cables of the BTS3702C are faulty, you need to replace them.7.3.2 Replacing the Optical FibersThe optical fibers are used to transmit the optical signals between the BTS3702E and the ASN-GW, or transmit the optical signals between two cascading BTS3702Es. When the optical fibersof the BTS3702E are faulty, you need to replace them.7.3.1 Replacing the Ethernet CablesThe Ethernet cables are used to transmit the electric signals between the BTS3702E and theASN-GW, or transmit the electric signals between two cascading BTS3702Es. When theEthernet cables of the BTS3702C are faulty, you need to replace them.PrerequisitelThe quantity and types of the faulty Ethernet cables are confirmed, and new Ethernet cablesare ready.lThe new cables are in good condition.lThe installation position of the Ethernet cable is recorded.lThe required tools and materials are ready. The tools and materials are the ESD wrist strapor ESD gloves, and ESD box or bag.ContextReplacing the Ethernet cables between the BTS3702E and the ASN-GW interrupts all theservices carried by the BTS3702E. Replacing the cascading Ethernet cable between twoBTS3702Es interrupts all the BTS3702E services except the BTS3702E services between thisEthernet cable and the ASN-GW.Replacing the Ethernet cables involves removing the faulty cables and installing the new cables.This operation takes about five minutes.CAUTIONTake proper ESD prevention measures, for example, wear ESD wrist straps or gloves to preventboards, modules, and electronic components from being destroyed by static discharge from thehuman body.7 Replacing the BTS3702E CablesDBS3900 WiMAXSite Maintenance Guide (Draft)7-4 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.Issue 01 (2009-11-30)
ProcedureStep 1 Route the new Ethernet cables in the same way as the faulty Ethernet cables are routed.Step 2 Remove the faulty Ethernet cables from the power modules. Remove the other connector fromthe peer device.Step 3 Install the new Ethernet cables.Step 4 Attach an engineering label to each new cable. The content on each engineering label should bethe same as that on the replaced cable.Step 5 Arrange and bind the new Ethernet cables.----EndLater MeasuresCheck the following items after replacing the faulty Ethernet cables:lThe cables are correctly and securely connected.lThe related transmission alarms are cleared in the alarm management system.Contact the local Huawei office to handle the faulty Ethernet cables.7.3.2 Replacing the Optical FibersThe optical fibers are used to transmit the optical signals between the BTS3702E and the ASN-GW, or transmit the optical signals between two cascading BTS3702Es. When the optical fibersof the BTS3702E are faulty, you need to replace them.PrerequisitelThe quantity and type of the faulty optical fibers are confirmed, and new optical fibers areready.lThe new fibers are in good condition.lThe connections of optical fibers are recorded.lThe required tools and materials are ready. The tools and materials include the ESD wriststrap or gloves, ESD box or bag, and dust free cloth.ContextReplacing the optical fibers between the BTS3702E and the ASN-GW interrupts all the servicescarried by the BTS3702E. Replacing the cascading optical fiber between two BTS3702Esinterrupts all the BTS3702E services except the BTS3702E services between this optical fiberand the ASN-GW.Replacing the optical fibers involves removing the faulty optical fibers, installing the new opticalfibers, clearing the related transmission alarms generated on the BTS3702E, and resuming theservices. This operation takes about five minutes.DBS3900 WiMAXSite Maintenance Guide (Draft) 7 Replacing the BTS3702E CablesIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.7-5
CAUTIONlTake proper ESD prevention measures. For example, wear ESD wrist straps or gloves toprevent boards, modules, and electronic components from being destroyed by static dischargefrom the human body.lProtect your eyes against the laser emitted by the optical fiber that is removed from the opticalmodule.ProcedureStep 1 Route the new optical fibers in the same way as the faulty optical fibers are routed.Step 2 Press the latch on the LC connector of the faulty optical fiber, and then remove the LC connectorfrom the optical module. Remove the other connector from the peer device.Step 3 Plug the LC connector of the new optical fiber into the same optical module according to thelabel on the optical fiber. Install the other connector on the peer device.Step 4 Attach an engineering label to each new optical fiber. The content on each engineering labelshould be the same as that on the replaced fiber.Step 5 Arrange and bind the new optical fibers.----EndLater MeasuresCheck the following items after replacing the faulty optical fiber:lThe optical fiber of the correct type is properly connected.lAll related alarms are cleared in the alarm management system.Contact the local Huawei office to handle the faulty optical fibers.7.4 Replacing the RF Jumpers of the BTS3702EThe RF jumper of the BTS3702E is used to receive and transmit the RF signals. When the faultyRF jumper is confirmed, replace the faulty RF jumper.PrerequisitelCheck the quantity and types of the faulty RF jumpers and prepare new RF jumpers.lThe required tools and materials are ready. The tools and materials include the ESD gloves,screwdriver, waterproof tape, insulation tape, and feeder cable cutting tool.ContextBefore replacing the RF jumpers, you must power off the BTS3702E. This disrupts all theservices carried by the sectors associated with the BTS3702E.7 Replacing the BTS3702E CablesDBS3900 WiMAXSite Maintenance Guide (Draft)7-6 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.Issue 01 (2009-11-30)
CAUTIONTake proper ESD prevention measures. For example, wear ESD wrist straps or gloves to preventboards, modules, and electronic components from being destroyed by static discharge from thehuman body.NOTESee the BTS3702E Quick Installation Guide to install new RF jumpers.ProcedureStep 1 For details about how to power off the BTS3702E, see 3.2 Powering Off the BTS3702E.Step 2 Remove the waterproof insulation tapes on the BTS3702E RF port and the antenna RF port.Step 3 Remove the faulty RF jumpers from the BTS3702E RF ports.Step 4 Remove the faulty RF jumpers from the RF ports on the antenna system.Step 5 Fix the connector of the new RF jumpers to the corresponding RF ports on the BTS3701E.Step 6 Wrap the joints of the BTS3702E RF ports with a layer of insulating tape. Wind the tape aroundthe joint from top down.Step 7 Wrap the insulating tape with three layers of waterproof tape.NOTEThe tape is wrapped in the following sequence: from top down, from bottom up, and then from top down.For every two adjacent tape layers, the tape on the upper layer overlaps about half the width of the tape onthe lower layer.Step 8 Wrap the waterproof tape with three layers of insulating tape. For details about how to wrap theinsulating tape, see Step 7.Step 9 Connect the RF jumpers to the antenna system.Step 10 Wrap the joint of the RF ports of the antenna system with the waterproof insulation tape.Step 11 Stick the color rings. The new color rings should have the same color as the color rings on theold RF jumpers.Step 12 For details about how to power on the BTS3702E, see 3.1 Powering On the BTS3702E.----EndLater MeasuresCheck the following items after replacing the faulty RF jumpers:lThe cables are correctly and securely connected.lThe BTS3702E is operational after being powered on.Contact the local Huawei office to handle the faulty RF jumpers.DBS3900 WiMAXSite Maintenance Guide (Draft) 7 Replacing the BTS3702E CablesIssue 01 (2009-11-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.7-7

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