SJ-20141127113509-004-ZXSDR R8872A (HV1.0) Hardware Replacement_608417

ZXSDR R8872AMacro Remote Radio UnitHardware Replacement

Hardware Version: HV1.0

ZTE CORPORATIONNo. 55, Hi-tech Road South, ShenZhen, P.R.ChinaPostcode: 518057Tel: +86-755-26771900Fax: +86-755-26770801URL: http://support.zte.com.cnE-mail: [email protected]

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Revision History

Revision No. Revision Date Revision Reason

R1.0 2014-11-17 First edition

Serial Number: SJ-20141127113509-004

Publishing Date: 2014-11-17 (R1.0)

SJ-20141127113509-004|2014-11-17 (R1.0) ZTE Proprietary and Confidential

ContentsAbout This Manual ......................................................................................... I

Chapter 1 ZXSDR R8872A Replacement .................................................. 1-1

Chapter 2 Cable Replacement................................................................... 2-12.1 Replacing the Grounding Cable........................................................................... 2-1

2.2 Replacing the Power Cable................................................................................. 2-3

2.3 Replacing the Optical Fiber ................................................................................ 2-4

2.4 Replacing the Antenna Feeder Jumper Cable ...................................................... 2-6

2.5 Replacing the AISG/MON Interface Cable............................................................ 2-8

Glossary .......................................................................................................... I

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About This ManualPurpose

This manual describes precautions andmethods for replacing the device and cables duringthe maintenance on the ZXSDR R8872A.

Intended Audience

This manual is intended for:

l Device installation engineersl Maintenance engineers

What Is in This Manual

This manual contains the following chapters.

Chapter 1, ZXSDR

R8872A Replacement

Describes the precautions and procedures for replacing the ZXSDR

R8872A.

Chapter 2, Cable

Replacement

Describes the precautions and procedures for replacing different cables of

the ZXSDR R8872A.

Related Documentation

The following documentation is related to this manual:

l ZXSDR R8872A Macro Remote Radio Unit Hardware Descriptionl ZXSDR R8872A Macro Remote Radio Unit Hardware Installation

Conventions

This manual uses the following conventions.

Note: provides additional information about a topic.

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Chapter 1ZXSDR R8872A ReplacementThis procedure describes how to replace the ZXSDR R8872A by taking pole-mountedinstallation as an example.

The ZXSDR R8872A replacement takes about 30 minutes. During replacement, allservices running on the ZXSDR R8872A are interrupted.

Prerequisite

l You have acquired the hardware configuration of the faulty ZXSDR R8872A, andprepared a new ZXSDR R8872A with the same specifications as the faulty one.

l You have recorded the information of all cable connections to the faulty ZXSDRR8872A, such as the interfaces to which the optical fibers and antenna feederjumpers are connected. This information is used for correctly reconnecting the cablesto the new ZXSDR R8872A after the replacement.

Steps

1. Stop operating the equipment.

a. Inform the OMC administrator that the ZXSDR R8872A will be replaced, and askthe administrator to block the cells corresponding to this site.

b. Power off the faulty ZXSDR R8872A.

2. Remove the faulty equipment.

a. Wear an ESDwrist strap, and ensure that the ESDwrist strap is grounded securely.

If no ESD wrist strap is available or no appropriate earthing point is available forgrounding the ESD wrist strap, wear antistatic gloves instead.

b. Disconnect all related cables from the faulty equipment, and stick a label onthe disconnected end of each cable. For how to disconnect the cables, refer toChapter 2 Cable Replacement.

c. Turn the adjustable wrench in counterclockwise direction to loosen the fasteningscrew in the middle, to remove the RRU chassis from the mounting ear groove ofthe pole-mounted fixing clamp, see Figure 1-1.

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ZXSDR R8872A Hardware Replacement

Figure 1-1 Removing the Chassis

3. Install the equipment by referring to the ZXSDR R8872A Macro Remote Radio UnitHardware Installation.

a. Install the new chassis.

b. According to the information marked on cable labels, reinstall the removed cables.

4. Make power-on checks.

During equipment power-on, check whether the indicators are displayed in correctstatuses, and perform the corresponding operation according to different situations.For the status description of each indicator on the ZXSDRR8872A, refer to the ZXSDRR8872A Macro Remote Radio Unit Hardware Description.

l Yes → Self-inspection is successful. Go to the next step.l No → Troubleshoot the fault, or contact ZTE technical support.

5. Notify the OMC administrator to unblock the cells corresponding to this site.

6. Handle the faulty ZXSDR R8872A.

a. Put the faulty ZXSDR R8872A into a moisture-proof antistatic bag, mark theequipment model, sector information, and fault information on a label, and stickthe label on the bag.

b. Put the bag containing the faulty device into a carton. Paste a label on the carton,also describe the equipment model, sector information, and fault information.

c. Contact the local office of ZTE for repairing the faulty equipment.

– End of Steps –

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Chapter 2Cable ReplacementTable of Contents

Replacing the Grounding Cable..................................................................................2-1Replacing the Power Cable ........................................................................................2-3Replacing the Optical Fiber .......................................................................................2-4Replacing the Antenna Feeder Jumper Cable ............................................................2-6Replacing the AISG/MON Interface Cable ..................................................................2-8

2.1 Replacing the Grounding CableReplacing the grounding cable will result in power-off of the ZXSDR R8872A andinterruption of all services carried by the ZXSDR R8872A. It may take about ten minutesto replace the grounding cable.

Steps

1. Record the statuses of all output switches in the external power supply cabinet, andthen turn off the output switch corresponding to the power cable to be replaced.

2. Remove the grounding screws on the grounding point of the equipment, and take offthe cable, see Figure 2-1.

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Figure 2-1 Removing the Grounding Cable

3. Connect a new grounding cable. For detailed operations, refer to the ZXSDR R8872AMacro Remote Radio Unit Hardware Installation.

4. Close the external power supply switch, and then observe whether power-relatedindicators on the equipment are in proper statuses. For the description aboutindicator statuses, refer to the ZXSDR R8872A Macro Remote Radio Unit HardwareDescription.l Yes → Power supply is normal. Go to the next step.l No → Troubleshoot the fault and connect the power cable again, or contact ZTE

technical support.

5. Handle the faulty cable.

a. Put the faulty cable into a moisture-proof antistatic bag, mark the cable type andfault information on a label, and then stick the label on the bag.

b. Put the bag containing the faulty cable into a carton, and stick the same label onthe carton, providing necessary information for cable repair.

c. Contact the local office of ZTE for handling the faulty cable.


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Chapter 2 Cable Replacement

2.2 Replacing the Power CableThe power cable is used to lead DC or AC power supplies from the external power supplycabinet to the operation and maintenance cavity of the ZXSDR R8872A, providing powerto the ZXSDR R8872A. This procedure describes how to connect a DC power cable.

Replacing the DC input power cable will result in power-off of the ZXSDR R8872A andinterruption of all services carried by the ZXSDR R8872A. The DC input power cablereplacement takes about ten minutes.

PrerequisiteA spare power cable with the same type and length as the DC input power cable to bereplaced is available.

Steps1. Take a record of the output switch status of the external power supply cabinet. Turn

off the output switch corresponding to power cable to be replaced.

2. Record the connection information at both ends of the old power cable, and thendisconnect the power cable. The following describes how to disconnect the powercable from the ZXSDR R8872A.

a. Open the maintenance cavity, and loosen the power cable crimping clip at theentrance of the maintenance cavity.

b. Press the top pole with the screwdriver, until the pole cannot spring back. Pull outthe power cable with the tubular terminal from the terminal block, see Figure 2-2.

Figure 2-2 Removing the Tubular Terminals

Note:

To pull out the plug, pull the ring at the plug with fingers and pull out the pluggradually.

3. Install a new cable.

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a. Install the new DC input power cable in accordance with the previously recordedconnection relationship. For detailed operations, refer to the ZXSDR R8872AMacro Remote Radio Unit Hardware Installation.

b. Stick a label on the power cable.

The label of the new cable must contain the same information as that on the labelof the old cable.

c. Use the multimeter to verify that no short circuit exists on -48 V and GND powercables.l Yes → The power cable is connected properly. Go to the next step.l No → Troubleshoot the fault and connect the power cable again, or contact

ZTE technical support.

4. Close the external power supply switch, and then observe whether power-relatedindicators on the equipment are in proper statuses. For the description aboutindicator statuses, refer to the ZXSDR R8872A Macro Remote Radio Unit HardwareDescription.l Yes → Power supply is normal. Go to the next step.l No → Troubleshoot the fault and connect the power cable again, or contact ZTE

technical support.

5. Handle the faulty power cable.





2.3 Replacing the Optical FiberReplacing the optical fiber will interrupt the service that is carried on the fiber. It may takeabout ten minutes to replace optical fibers.

PrerequisiteA spare optical fiber is available. The spare cable must be of the same type as the cableto be replaced.

Steps1. Disconnect the old cable.

a. Record the connection position at both ends of the optical fiber to be replaced,and mark the positions.

b. Loosen the optical fiber crimping clip at the entrance of the maintenance cavity.

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c. Press the blue line card at the front of the optical fiber, and remove the optical fiberand optical module (if it needs to be replaced) from the maintenance cavity, seeFigure 2-3.

Figure 2-3 Removing the Optical Fiber

d. Disconnect the optical fiber from the BBU.

Note:

If the replaced optical fiber is not damaged, cover the fiber connector with a dustproofcap to prevent the connector getting dirty. If the fiber connector is dirty, use a piece ofdust-free cotton cloth or a fiber-cleaning box to clean it.

2. Connect a new optical fiber.

a. Remove the dust cap from the new optical cable connector, and store it properlyfor future use.

b. Connect one end of the optical fiber to the RRU and the other end to the BBUby referring to the previous optical connection. For detailed cable installationinstructions, refer to the ZXSDR R8872A Engineering Hardware Installation.

c. Stick a label on the new optical fiber.

The label must contain the same contents as the label on the previous optical fiber.

3. Check whether indicators on the optical fiber are in normal statuses. For thedescription about indicator statuses, refer to the ZXSDR R8872A Macro RemoteRadio Unit Hardware Description.

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l Yes → The optical fiber is connected successfully. Go to the next step.l No → Troubleshoot the fault and connect the optical fiber again, or contact ZTE

technical support.

4. Handle the faulty optical fiber.





2.4 Replacing the Antenna Feeder Jumper CableReplacing the antenna feeder jumper cable will result in interruption of all services carriedby the cable. It may take about ten minutes to replace the antenna feeder jumper cable.

Prerequisite

A set of RF cables are specified for different types of sites.

l If RF cables are to be replaced for capacity expansion on a site, you can use a set ofRF cables in accordance with the site type.

l If a single RF cable is to be replaced, you can select an RF cable with an appropriatelength from a set of cables according to the location where the cable is to be used.

Steps

1. Inform the OMC administrator that the antenna feeder jumper cable will be replaced.Ask the administrator to block the cells in this site.

2. Disconnect the old cable.

a. Remove the waterproof tape from the antenna feeder jumper cable.

b. Use a wrench to unscrew the fastening screws of the antenna feeder cableconnector and the interface. Take off the connector carefully, see Figure 2-4.

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Figure 2-4 Removing the Antenna Feeder Jumper Cable


a. Install the new RF cable with both ends connected to the proper interfaces inaccordance with the previously-recorded connection information.

b. Waterproof the RF connectors on two ends with one layer of insulation tape, threelayers of waterproof clay, and three layers of anti-ultraviolet tapes.

c. Check whether the cable can send and receive RF signals properly.l Yes → The cable is connected properly. Go to the next step.l No → Troubleshoot the fault and connect the cable again, or contact ZTE

technical support.

d. Paste a label on the new cable.

The label content should be consistent with that on the faulty one.

4. Notify the OMC administrator to unblock the cells corresponding to this site.

5. Handle the faulty RF cable.



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2.5 Replacing the AISG/MON Interface CableReplacing the AISG/MON interface cable will result in interruption of all services carriedby the cable. It may take about ten minutes to replace the AISG/MON interface fiber.

Steps

1. Remove the old cable, see Figure 2-5.

a. Record and mark the connection positions at both ends of the faulty AISG/MONinterface cable.

b. Turn the fastening screws on the cable connector in counterclockwise directionwith a screwdriver to loosen the connector.

c. Pull out the connectors at both ends of the cable to take out the faulty cable.

Figure 2-5 Removing the AISG/MON Interface Cable


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a. Connect the new AISG/MON interface cable to the corresponding interfaces inaccordance with the original positions of the AISG/MON cable to be replaced. Fordetailed installation instructions, refer to the ZXSDRR8872AMacro Remote RadioUnit Hardware Installation.

b. Stick a label on the new AISG/MON interface cable.

The label must contain the same contents as those on the label on the previouscable.

3. According to purposes of different interface cables, test whether the correspondingcable can connect to the debugging device, monitoring device, or AISG antennaproperly. If the connection is abnormal, check the connection and connect the cableagain.l Yes → The cable is connected properly. Go to the next step.l No→Troubleshoot the fault and connect the cable again, or contact ZTE technical

support.

4. Handle the faulty cable.





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GlossaryOMC- Operation & Maintenance Center

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SJ-20141127113509-004-ZXSDR R8872A (HV1.0) Hardware Replacement_608417

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