07-ZXG10-BTS-)

ZXG10-BTSBase Transceiver Station

Maintenance Manual(Routine Maintenance)

Version 2.9

ZTE CORPORATION ZTE Plaza, Keji Road South, Hi-Tech Industrial Park, Nanshan District, Shenzhen, P. R. China 518057 Tel: (86) 755 26771900 800-9830-9830 Fax: (86) 755 26772236 URL: http://support.zte.com.cn E-mail: [email protected]

LEGAL INFORMATION Copyright © 2006 ZTE CORPORATION. The contents of this document are protected by copyright laws and international treaties. Any reproduction or distribution of this document or any portion of this document, in any form by any means, without the prior written consent of ZTE CORPORATION is prohibited. Additionally, the contents of this document are protected by contractual confidentiality obligations. All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTE CORPORATION or of their respective owners. This document is provided “as is”, and all express, implied, or statutory warranties, representations or conditions are disclaimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose, title or non-infringement. ZTE CORPORATION and its licensors shall not be liable for damages resulting from the use of or reliance on the information contained herein. ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the subject matter of this document. Except as expressly provided in any written license between ZTE CORPORATION and its licensee, the user of this document shall not acquire any license to the subject matter herein. The contents of this document and all policies of ZTE CORPORATION, including without limitation policies related to support or training are subject to change without notice.

Revision History

Date Revision No. Serial No. Reason for Revision

9/01/2005 R1.0 sjzl20052378 First edition

8/17/2006 R1.1 sjzl20052378 Change in documentation style

ZTE CORPORATION Values Your Comments & Suggestions! Your opinion is of great value and will help us improve the quality of our product documentation and offer better services to our customers.

Please fax to: (86) 755-26772236; or mail to Documentation R&D Department, ZTE CORPORATION, ZTE Plaza, A Wing, Keji Road South, Hi-Tech Industrial Park, Shenzhen, P. R. China 518057.

Thank you for your cooperation!

Document Name ZXG10-BTS (V2.9) Base Transceiver Station Maintenance Manual – Routine Maintenance

Product Version V2.9 Document Revision Number R1.1

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Contents

About this Manual........................................................... ix Purpose.............................................................................. ix Intended Audience ............................................................... ix Prerequisite Skill and Knowledge ............................................ ix What is in This Manual........................................................... x Related Documentation......................................................... xi Conventions........................................................................ xi How to Get in Touch............................................................ xii

Chapter 1.......................................................................1

Routine Maintenance Overview.......................................1 Procedure ...............................................错误！未定义书签。 Precautions ....................................................................3

Chapter 2.......................................................................5

Daily Maintenance Items.................................................5 BTS Current Alarms Querying and Handling ..............................5 24-Hour BTS History Alarms Querying and Handling...................5 24-Hour BTS History Notification Messages Querying and Handling..........................................................................................6 Real Time BTS Cells Status Querying and Handling ....................6 Daily Cells Performance Report Analysis ...................................7

Chapter 3.......................................................................9

Weekly Maintenance Items.............................................9 Past Week History Alarms Querying and Handling ......................9 Past Week History Notification Messages Querying and Handling 10 Alarm Frequency Analysis .................................................... 10

Weekly Cell Performance Report Analysis................................11

Chapter 4.....................................................................13

Monthly Maintenance Items..........................................13 Monthly Cell Performance Report Analysis ...............................13 Spare Parts Check ...............................................................13

Chapter 5.....................................................................15

Quarterly Maintenance Items........................................15 Conversation, Coverage, and Handover Test ...........................15

Equipment Room Maintenance ........................................ 15 Burglarproof Nets, Windows, Doors, and Other Items Check ......15 Equipment Room Temperature Check.....................................16 Equipment Room Humidity Check ..........................................16 Equipment Room Air Conditioner(s) Check ..............................16 Equipment Room Cleanliness Check .......................................16 Equipment Room Lighting Check ...........................................17 Equipment Room Sockets Check............................................17 Equipment Room Safety Check..............................................17 Environmental Alarm Collection Facilities Check .......................17

Principle Equipment Check ............................................. 18 Cabinets Power Supply Check ...............................................18 Fans Check.........................................................................18 Boards (CMM, TRM, and AEM) Running Status Check................18

Chapter 6.....................................................................21

Yearly Maintenance Items.............................................21 Principle Equipment Check ............................................. 21

Amplifiers Output Power Measurement ...................................21 VSWR Measurement ............................................................22 Clock Calibration (Optional for the BTSs with Internal Synchronization) .................................................................23 Cabinets Air Filters Cleaning .................................................25

Lightning Protection and Grounding Check ........................ 26 Lightning Arresters Check.....................................................26 Grounding Cables Check.......................................................27

Grounding Resistance Measurement ...................................... 27 Antenna Feeder System Check........................................ 28

Antenna Feeder Interfaces Check .......................................... 28 Antennas and Towers Firmness Check.................................... 28 Directional Antennas Tilt Check ............................................. 29 Waterproof Status of Antenna Feeder Connectors and Lightning Protection Grounding Clips Check .......................................... 31

Other Checks................................................................ 32 Iron Towers Check (Optional) ............................................... 32 Mast Check (Optional) ......................................................... 32 Transmission Equipment Running Status Check ....................... 33 Storage Batteries Running Status Check................................. 33

Chapter 7.....................................................................34

Routine Maintenance Data Record Forms.....................34 Daily Maintenance Record Form ...................................... 34 Weekly Maintenance Record Form ................................... 34 Quarterly Maintenance Record Form ................................ 34 Yearly Maintenance Record Form..................................... 34 Emergency Troubleshooting Record Form ......................... 34 Board Replacement Data Record Form ............................. 34

Appendix A..................................................................34

Normal and Abnormal Status of Boards........................34 Normal Status of Boards ................................................ 34

CMM ................................................................................. 34 TRM.................................................................................. 34 CDU.................................................................................. 34 RDU.................................................................................. 34

Abnormal Status of Boards ............................................. 34 CMM ................................................................................. 34 TRM.................................................................................. 34 CDU.................................................................................. 34 RDU.................................................................................. 34

Appendix B..................................................................34

Replacing Modules and Parts ........................................34 Precautions ........................................................................34 CMM Replacement ...............................................................34 TRM/ETRM Replacement.......................................................34 AEM Replacement................................................................34 PDM Replacement ...............................................................34 MCMM Backplane Replacement..............................................34 MTRM Backplane Replacement ..............................................34 Fan Module Replacement......................................................34 Trunk Cable Replacement .....................................................34 RF Cable Replacement .........................................................34 Cabinet-Top 1/2'' Soft Jumpers Replacement...........................34

Appendix C..................................................................34

PDM Front Panel Power Switches .................................34

Appendix D .................................................................34

RF Awareness and Control Information........................34 FCC Statement ............................................................. 34 CE Statement ............................................................... 34

Appendix E ..................................................................34

Abbreviations.................................................................34

Appendix F...................................................................34

Figures............................................................................34

Appendix G .................................................................34

Tables .............................................................................34

Appendix H.................................................................34

Index..............................................................................34

Confidential and Proprietary Information of ZTE CORPORATION ix

About this Manual

Purpose

This manual introduces the routine maintenance period, items and methods for ZXG10-BTS (V2.9).

Intended Audience

This document is intended for engineers and technicians who perform routine maintenance on the ZXG10-BTS (V2.9) Base Transceiver Station.

Prerequisite Skill and Knowledge

To use this document effectively, users should have a general understanding of GSM telecommunication technology. Familiarity with the following is helpful:

The ZXG10 system and its various components

User interfaces on the Base Transceiver Station

OMCR software

Local operating procedures

ZXG10-BTS Base Transceiver Station Maintenance Manual (Routine Maintenance)

x Confidential and Proprietary Information of ZTE CORPORATION

What is in This Manual

This manual contains the following chapters:

T AB L E 1 – C H AP T E R S U M M AR Y

Chapter Summary

Chapter 1, Routine Maintenance Overview

Explains the purpose of routine maintenance and the precautions during maintenance.

Chapter 2, Daily Maintenance Items

Introduces the daily maintenance items and methods.

Chapter 3, Weekly Maintenance Items

Introduces the weekly maintenance items and methods.

Chapter 4, Monthly Maintenance Items

Introduces the monthly maintenance items and methods.

Chapter 5, Quarterly Maintenance Items

Introduces the quarterly maintenance items and methods.

Chapter 6, Yearly Maintenance Items

Introduces the yearly maintenance items and methods.

Chapter 7, Routine Maintenance Data Record Forms

Gives all the routine maintenance forms related to the maintenance methods introduced in this Manual.

Appendix A, Normal and Abnormal Status of Boards

Introduces the normal and abnormal status of the boards.

Appendix B, Replacing Modules and Parts

Explains the procedures of replacing Modules and Parts.

Appendix C, PDM Front Panel Power Switches

Explains the power switches on PDM front panel.

Appendix D, Abbreviations Lists all the abbreviations used in the manual.

Appendix E, Figures Lists all the figures appeared in the manual.

Appendix F, Tables Lists all the tables appeared in the manual.

Appendix G, Index Lists the important words appeared in the table.

Software Version

The steps and procedure mentioned in the document are according to OMCR version 2.0 (Build 95d – 2.95.100d), which is also referred as OMCR V2.95.

About this Manual

Confidential and Proprietary Information of ZTE CORPORATION xi

Related Documentation

The following documentation is related to this manual:

ZXG10-BTS (V2.9) Base Transceiver Station Guide to Documentation

ZXG10-BTS (V2.9) Base Transceiver Station – Technical Manual

ZXG10-BTS (V2.9) Base Transceiver Station – Hardware Manual

ZXG10-BTS (V2.9) Base Transceiver Station – Installation Manual

ZXG10-BTS (V2.9) Base Transceiver Station – System Debugging Manual

ZXG10-BTS (V2.9) Base Transceiver Station – Maintenance Manual (Emergency Maintenance)

ZXG10-BTS (V2.9) Base Transceiver Station – Maintenance Manual (Troubleshooting)

Conventions

ZTE documents employ the following typographical conventions.

T AB L E 2 – TY P O G R AP H I C AL C O N V E N T I O N S

Typeface Meaning

Italics References to other Manuals and documents.

“Quotes” Links on screens.

Bold Menus, menu options, function names, input fields, radio button names, check boxes, drop-down lists, dialog box names, window names.

CAPS Keys on the keyboard and buttons on screens and company name.

Constant width Text that you type, program code, files and directory names, and function names.

[ ] Optional parameters.

Mandatory parameters.

| Select one of the parameters that are delimited by it.

Note: Provides additional information about a certain topic.

Typographical Conventions


xii Confidential and Proprietary Information of ZTE CORPORATION

Typeface Meaning

Checkpoint: Indicates that a particular step needs to be checked before proceeding further.

Tip: Indicates a suggestion or hint to make things easier or more productive for the reader.

T AB L E 3 – M O U S E OP E R AT I O N C O N V E N T I O N S

Typeface Meaning

Click Refers to clicking the primary mouse button (usually the left mouse button) once.

Double-click Refers to quickly clicking the primary mouse button (usually the left mouse button) twice.

Right-click Refers to clicking the secondary mouse button (usually the right mouse button) once.

Drag Refers to pressing and holding a mouse button and moving the mouse.

How to Get in Touch

The following sections provide information on how to obtain support for the documentation and the software.

If you have problems, questions, comments, or suggestions regarding your product, contact us by e-mail at [email protected]. You can also call our customer support center at (86) 755 26771900 and (86) 800-9830-9830.

ZTE welcomes your comments and suggestions on the quality and usefulness of this document. For further questions, comments, or suggestions on the documentation, you can contact us by e-mail at [email protected]; or you can fax your comments and suggestions to (86) 755 26772236. You can also browse our website at http://support.zte.com.cn, which contains various interesting subjects like documentation, knowledge base, forum and service request.

Mouse Operation

Conventions

Customer Support

Documentation Support

Confidential and Proprietary Information of ZTE CORPORATION 1

C h a p t e r 1

Routine Maintenance Overview

Routine maintenance is to check the equipment status periodically to find and resolve the problems in time to prevent potential damages or faults. This chapter introduces the purpose, common procedure and precautions of routine maintenance of ZXG10-BTS (V2.9).

Common Methods

The common methods for finding and removing faults are as follows:

Check alarms using alarm management and operation log of BSS operation & maintenance subsystem in OMCR (V2).

Observe and analyze alarm messages

Observe and analyze the alarm messages reported by each Network Element (NE), such as, current alarms, history alarms and common notification messages. This method helps to locate and resolve the abnormal situation or potential faults in advance, while the network is running.

Observe operation log

Observe operation log through user management to trace modifications on system parameters. Locate the relevant terminal and operator and detect the fault caused by the personal operations in time.

LED status analysis

Locate and remove fault by observing LED status on the panel of each board in the rack. The maintenance staff should be well familiar with the status and meaning of all LEDs on each board.


2 Confidential and Proprietary Information of ZTE CORPORATION

Performance analysis

Carry out performance management and signaling tracing through management interface of BSS operation and maintenance subsystem in OMCR (V2). The steps include the following:

Using performance management interfaces

Create different performance measurement tasks, generate different performance reports and understand different performance indices of BSS. By analyzing the information, detect the distribution of load in the network and adjust network parameters in time to improve the network performance.

Through the signaling tracing interface

Trace the signaling involved in the BSS (including the Gb interface signaling). This helps the relevant engineers to consult various signaling procedures during debugging and maintenance and discover the signaling problems.

Fault analysis with auxiliary instruments

Use auxiliary instruments such as the test MS, signaling analyzer and BER analyzer to analyze, locate and remove faults.

Plugging/unplugging

Unplug/plug the defective board and external interface connectors. This will resolve the fault caused by the poor contacts or processor.

Comparison and replacement

Compare the defective board with a normal board in the similar position. Check for the system in running state, jumpers or connection cables (for example, a board in the same slot in a multi-mode position in the system). This will help to verify the fault.

Replace the possible defective board with the spare or another faultless board.

Isolation

Isolate the part of the defective board from the other relevant boards or racks. This will help to find out if the fault is due to the interaction between them.

Self-test

Run the self-test after powering on. The LEDs on the panel flash in a certain pattern. Examine the board based on LED pattern.

To remove the fault, the above procedure works simultaneously with the experience of the maintenance staff.

Chapter 1 - Routine Maintenance Overview


Precautions

Following matters need attention during routine maintenance.

The equipment room should be clean. Ensure the normal temperature and humidity conditions. Take preventions against dust and dampness.

Ensure the stability and reliability of the primary power system. Check the system grounding and the lightning ground on periodic basis. In particular, check the lightning protection system before storm season and after thunderstorm to ensure that the facilities are in good condition.

Perform regular routine maintenance. Maintain a complete log to provide detailed records on system operation, version, data changes, upgrading and troubleshooting. Keep shift records to identify the responsibilities. This helps in the future analysis and troubleshooting.

The maintenance personnel should be well trained and have the certain knowledge about the equipment and networks before taking the post. Before handling the equipment, wear antistatic wrist strap to avoid accidents.

Running signaling tracing program is highly forbidden in the daytime, when traffic is high. Signaling tracing can only be performed under the conditions permitted by ZTE Customer Service Department and in low-traffic time periods.

Make sure that the spare-parts are not affected by the moisture or mould. Ensure the sufficient stock of commonly used spare-parts. Keep the spare-parts separate to the defective parts and label them for convenience.

The light intensity in the equipment room should be strong enough for maintenance. Ensure that there should be no dark corner that causes maintenance inconveniences.

Remove the fault without delay. Contact the local office of ZTE CORPORATION immediately for the unresolved faults.

Place the contact information of the local ZTE office at a visible place so that the maintenance staff can contact ZTE in time.





C h a p t e r 2

Daily Maintenance Items

This chapter introduces the daily maintenance items of ZXG10-BTS (V2.9).

BTS Current Alarms Querying and Handling

ZXG10 Alarm Management interface in the OMCR client

1. Click Fault Management in the OMCR topological view and select Alarm management.

2. In the ZXG10 Alarm Management interface, select View > Physical View from the menu bar.

3. From the left pane, select GSM Equipment > Physical Site to view the current alarms of the BTS site in the right pane.

There is no abnormal alarm of the BTS in the alarm view.

Double-click the alarm to get the alarm details. Resolve the alarm according to the System method in Details window.

24-Hour BTS History Alarms Querying and Handling



2. In the ZXG10 Alarm Management interface, select File > Alarm History Query from the menu bar to start Alarm Query Wizard.

i. Select the History Alarm as Alarm Type.

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ii. Set the past 24 hours as the start time/end time, and then select the BTS to be queried from the alarm source to query all history alarms.

No frequent abnormal alarm or alarms occur and the alarm history query displays normal results.

Analyze the abnormal alarms or frequent alarms in detail. Find the causes, and resolve the frequent or abnormal alarms as appropriate.

24-Hour BTS History Notification Messages Querying and Handling




i. Select the Information as Alarm Type.

ii. Set the past 24 hours as the start time/end time, and then select BSC and OMCR Information from the source to query all history notification messages.

No frequent exception notification message occurs and the notification message query displays normal results.

Analyze the frequent exception notification messages in detail. Find the causes, and resolve the notification messages.

Important! Focus on history notification messages related to BTS and Abis interface transmission during history notification messages analysis.

Real Time BTS Cells Status Querying and Handling

ZXG10 Dynamic data management interface in the OMCR client

1. Click Configuration Management in the OMCR topological view and select Dynamic data management.

2. In the left pane of ZXG10 Dynamic Data Management interface of the OMCR client, do the following:

i. To display the configurations and real-time status of the traffic and signaling channels of the current cell, right-

Normal Result

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Chapter 2 - Daily Maintenance Items


click the BTS Site Manager > Cell, and select QueryChanStastic.

ii. To display the real-time status of the channels of transceivers, click Cell > TRX. Right-click in the lower-right pane and click Refresh.

The status of the cell channel is normal and there is no blocked channel. Traffic channels are seized in real-time.

Refer to BTS alarms in the alarm management interface to resolve the blocked channels of the BTS. If there is no or abnormal channel seizure (for example, the channel is released once it is seized), use alarm management with signaling tracing to resolve.

Daily Cells Performance Report Analysis

ZXG10 Performance analyzer interface in the OMCR client

1. Click Performance Management in the OMCR topological view and select Performance analyser.

2. In the ZXG10 Performance Analyser interface, select Report > Create Performance Report from the menu bar to create a cell performance report.

The performance indices in the report are normal.

Resolve the abnormal indices in the performance report as appropriate.

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C h a p t e r 3

Weekly Maintenance Items

This chapter introduces the weekly maintenance items of ZXG10-BTS (V2.9).

Past Week History Alarms Querying and Handling

ZXG10 Alarm management interface in the OMCR client

1. Click Fault management in the OMCR topological view and select Alarm management.


i. Select the History Alarm as Alarm Type.

ii. Set the past week as the start time/end time, and then select BSC to be queried from the alarm source to query all history alarms.

The indices in the alarm query result are normal. There is no alarm that occurs often.

Analyze in detail the alarms that occur often. Find their causes and remove them.

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Past Week History Notification Messages Querying and Handling

ZXG10 Alarm management interface in the OMCR client

1. Click Fault management in the OMCR topological view and select Alarm management.


i. Select the Information as the Query Type.

ii. Set the past week as the start time/end time, and then select BSC to be queried from the alarm source to query all common notification messages.

No frequent exception notification message occurs and alarm query displays normal results.

Analyze in detail the exception notification messages that often occur, find their causes and remove them. Check the quality of the relevant transmission link for the notification messages that often occur at the Abis transmission interface, such as slip notification message and Rx alarms.

Alarm Frequency Analysis

Alarm management interface in the OMCR client

1. Click ZXG10 Fault management in the OMCR topological view and select Alarm management.

2. In the ZXG10 Alarm Management interface, select File > Alarm Statistics > Alarm Frequency Statistics from the menu bar to see Alarm Frequency Statistics window.

i. Select relevant BTS from the Source tab.

ii. Set the past week as the start time/end time from the Time tab. Click on the Custom radio option below and select 30 from the list item to be read as The Most 30 Kinds of Alarms.

Alarm frequency analysis results are normal.

Analyze in detail the alarms that often occur, find their causes and remove them.

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Chapter 3 - Weekly Maintenance Items


Weekly Cell Performance Report Analysis

ZXG10 Performance Analyser interface in the OMCR client



The performance indices in the report are normal.

Resolve the abnormal indices in the performance report as appropriate.

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C h a p t e r 4

Monthly Maintenance Items

This chapter introduces the monthly maintenance items of ZXG10-BTS (V2.9).

Monthly Cell Performance Report Analysis ZXG10 Performance Analyser interface in the OMCR client



The performance indices of the cells are stable.

Focus on the optimization on the cell with the poorest performance. Analyze the cells with significant index changes in detail, and locate the causes.

Spare Parts Check None.

Check the spare part warehouse and conditions against the spare parts list.

Note: Keep the damaged parts separate from the new and good-conditioned parts. Mark the items for convenience.

The spare parts are complete and in good condition.

Arrange supplementary common spare parts in time before these parts are used.

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C h a p t e r 5

Quarterly Maintenance Items

This chapter introduces the quarterly maintenance items of ZXG10-BTS (V2.9).

Conversation, Coverage, and Handover Test

Test MS and drive testing tools

Test the conversation, coverage and handover of the BTS with a test MS and drive testing tools.

The conversation quality is good. There is no call loss during the handover, and the BTS coverage is normal.

Resolve the problems found during the tests.

Equipment Room Maintenance Burglarproof Nets, Windows, Doors, and Other Items Check

None.

Check the burglar nets, windows, doors and other items.

The burglar nets, windows and doors are intact.

Repair the items in time if they are damaged.

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Equipment Room Temperature Check

None.

Observe the temperature in the equipment room from the thermometer.

Long-term operating temperature: 15 ºC to 30 ºC

Short-term operating temperature: 0 °C to 45 °C

Adjust the air conditioner(s) to maintain the normal temperature conditions.

Equipment Room Humidity Check

None.

Check the humidity in the equipment room from the hygroscope.

Long-term operating room-humidity: 40 % - 65 %

Short-term operating room-humidity: 20 % to 90 %

Adjust the air conditioner(s) to maintain the normal humidity conditions.

Equipment Room Air Conditioner(s) Check

None.

Check the operation of the air conditioner(s) in the equipment room and clean the air filters periodically.

Air conditioner(s) ensures the normal and effective cooling of the equipment room.

Repair the air conditioner(s) in time.

Equipment Room Cleanliness Check

None.

Check if the equipment room floor, cabinets, doors and windows, equipment documentation, and equipment interior and floor are clean.

All facilities remain clean and tidy without obvious dust.

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Chapter 5 - Quarterly Maintenance Items


Clean the dust. Find out the reasons of poor dust conditions and take the corresponding dustproof measures.

Equipment Room Lighting Check

None.

Check the general lighting and emergency lighting in the equipment room.

The lighting is normal and covers every corner.

Repair the damaged lighting facilities in time.

Equipment Room Sockets Check

None.

Check if the sockets in the equipment room are normal.

The sockets in the equipment room are normal.

Repair the sockets in time if the sockets are damaged.

Equipment Room Safety Check

None.

Check for the disaster protection facilities, equipment protection, and firefighting facilities in the equipment room.

The equipment room includes handheld fire extinguishers that have normal pressure and fall within the validity period. The equipment room is rodent-free and insect-free.

Repair or replace the damaged firefighting facilities in time.

Environmental Alarm Collection Facilities Check

None.

Check the environment alarm collection items such as temperature, humidity, fire alarm, power supply, and burglarproof facilities in the equipment room.

The environment alarm collection facilities in the equipment room are normal.

Repair or replace the damaged environment alarm collection facilities in time.

Troubleshooting

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Principle Equipment Check Cabinets Power Supply Check

Mutilmeter

Check the DC input voltage at the cabinet top using multimeter. Check if any power cable is aged and need to be changed.

Nominal DC voltage: -48 V

Allowed fluctuation range: -57 V to -40 V

No DC power cable is aged.

In case of DC power abnormalities, check for the power alarm. If there is any power alarm, troubleshoot according to the meanings of the alarm LED and instructions of the power equipment. Replace the aged DC power cable if any.

Fans Check

None.

Check for the normal running of the fans, and the alarm on the OMCR client.

The fans work normal with even rotational speed. There is no alarm on the OMCR client.

In case of the fan alarms, replace the fan plug-in box or fans.

None.

Boards (CMM, TRM, and AEM) Running Status Check

None.

Check for the alarms by observing the LEDs on the Controller & Maintenance Module (CMM), Transceiver Module (TRM), and Antenna Equipment Module (AEM) panels and in the OMCR client.

Note: Refer to ZXG10-BTS (V2.9) Base Transceiver Station – Hardware Manual, for the meaning of LEDs.

The boards run normal and there is no alarm. See topic Normal Status of Boards in Appendix A for the normal working status of the boards.

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Exit from Test

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Chapter 5 - Quarterly Maintenance Items


See Table 15 in Appendix A for the abnormal status of CMM. Troubleshoot the board as suggested below:

PWR troubleshooting

If the red PWR LED is on or off, check through the background (or Local Maintenance Terminal (LMT)) for LAPD link disconnection, power over-voltage or power under-voltage alarm.

RUN troubleshooting

If the red RUN LED is on or flashes, check through the background (or LMT) for LAPD link disconnection alarm.

SYN troubleshooting

If the red SYN LED flashes at 4 Hz, it indicates an E1 out-of-frame alarm.

If the red SYN LED is on, it indicates the E1 line broken or not connected, check through the background (or LMT) for LAPD link disconnection alarm.

CLK troubleshooting

When the red CLK LED is on, check through the background or LMT weather there is LAPD link interruption alarm or clock abnormality alarm.

STA troubleshooting

Red STA LED flashes at 1 Hz: It indicates LAPD link interruption.

Red STA LED flashes at 4 Hz: It indicates that the HDLC link is broken. Check through the background or LMT for the alarms of the following:

Long HW link disconnection

Active/standby communication link failure

Communication link failure from the extended rack to the basic rack

Communication link failure between the basic rack and the left and right extended racks

Red STA LED is on: Check through the background or LMT for the indications of the following:

Forward code slip at the transmit end of an E1 interface

Reverse code slip at the transmit end of an E1 interface

Forward code slip at the receive end of an E1 interface

Reverse code slip at the receive end of an E1 interface

CMM Board Troubleshooting



See Table 16 in Appendix A for the abnormal status of TRM. Troubleshoot the board as suggested below:

PWR troubleshooting If the PWR LED is off or PWR LED is red, check through the background or LMT for the alarms of the following:

LAPD link disconnection between Frame Unit Controller (FUC) and BSC

Communication interruption between CMM and FUC

RUN troubleshooting

If the red PWR LED is on, check through the background or LMT for the alarms of the following:

LAPD link disconnection between FUC and BSC

Communication interruption between the CMM and the FUC

MOD troubleshooting

If the red MOD LED is on, it indicates that the BCCH is blocked. Unblock the BCCH carrier through Dynamic Data Management. If unblocking of BCCH does not work, reset the TRM. If the alarm still exists, replace the TRM.

ACT troubleshooting

If the red ACT LED flashes, it indicates that channels (such as SDCCH and TCH) are blocked. Unblock the SDCCH or TCH through Dynamic Data Management. If unblocking of SDCCH and TCH does not work, reset the TRM. If the alarm still exists, replace the TRM.

If the red ACT LED is on, it is possible that TRM has fault. Reset the TRM. If resetting of TRM does not work, replace the TRM.

STA troubleshooting

If the red STA LED flashes at 1 Hz, it indicates that the LAPD link between FUC and BSC is broken.

If the red STA LED flashed at 4 Hz, it means the HDLC link of the TRM is broken. Check through the background or LMT for the alarm of communication interruption between CMM and FUC.

If red STA LED is on, check through the background or LMT for the alarms related to temperature, clock and frame number.

TRM Board Troubleshooting


C h a p t e r 6

Yearly Maintenance Items

This chapter introduces the yearly maintenance items of ZXG10-BTS (V2.9).

Principle Equipment Check Amplifiers Output Power Measurement

Following tools are required:

One 3 1/2 digital multimeter

One 150 W through-line power meter

Several RF cables

Other metals

1. Turn off the TRM power supply. See Appendix C, for the location of TRM power switch.

2. If Transceiver Unit (TRU) does not output power on turning off the power supply, do the following:

i. Loosen the cable connectors from the amplifier output end to AEM.

ii. Connect the cable connectors with a through-line power meter and a large-power load.

Caution: If the connector is not connected with any antenna, it must be connected with a 100 W microwave power load. If power load is connected with an antenna, then it does not need to be connected with any load.

3. Turn on the power and add the stimulation (there is output from the TRU).

Tools

Test Procedure



4. Read the power of the set frequency band (GSM900: 925 MHz – 960 MHz; GSM1800: 1805 MHz – 1880 MHz). In the case of full power, read the output power and the gain flatness.

The output power is more than 40 W and the gain flatness is less than ±0.5 dB.

1. For 80 W BTS, if the amplifier output power fails to meet the technical specifications, check if the TRU output level is within the allowed range. If it is normal, then check power amplifier for the fault.

2. Common problems of a power amplifier include the following:

Power amplifier module (front-end) damages

Amplifier tube (rear-end) damages

The above problems are caused by low gain and decreased output power. If the power amplifier causes the fault, replace the module.

1. Remove the connections between the through-line power meter, large power load, and the amplifier output end.

2. Restore the connection between the amplifier output end and the AEM.

VSWR Measurement

SiteMaster

50 Ω SMA (M) matching load

SMA torque spanner

One N(M), -N(M) testing cable

1. Turn on the power switch of SiteMaster.

2. Select OPT in the main menu.

3. Select the items to be measured (SWR, RL, CL) by pressing the B1 key.

4. Select the FREQ key in the main menu, and enter start and stop scanning frequencies.

5. Select the START CAL key to calibrate the measuring instrument as follows:

i. Connect the circuit breaker (OPEN) with TEST PORT and select ENTER.

ii. Connect the shorter (SHORT) with TEST PORT and select ENTER.

iii. Connect the 50 Ω load with TEST PORT and select ENTER.

The system performs auto calibration.

Normal Result

Troubleshooting

Exit from Test

Tools

Test Procedure

Chapter 6 - Yearly Maintenance Items


6. In SCALE of the main menu, enter the values of TOP, BOTTOM, and LIMIT. For convenient query, the recommended value of TOP is 1.5 and BOTTOM is 1.0.

7. In the FREQ menu, select MARKER and then select EDIT. Read the values. Examine if these values meet the requirements and then save them.

VSWR is less than 1.5.

If the test result is not normal, use the fault location function (DTF) to find the position of the fault and its cause. Remove the fault as appropriate.

Reconnect the connector of the equipment and restore the system.

Calibrate the measuring instrument before power-on for measurement

If measurement is conducted during equipment running, it is necessary to notify the customer or get the customer's approval. Lock the relevant sectors then switch off the relevant power and perform the test (measurement during equipment running is not recommended).

During measurement, observe the running status of the equipment with care.

Clock Calibration (Optional for the BTSs with Internal Synchronization)

Frequency meter

Notebook computer installed with LMT software

1. Set the BTS to the internal synchronization mode in OMCR.

In OMCR, select Configuration Management > Integrated Configuration Management > PhyView. Right-click Physical Site, select Site Attribute from the popup menu and set the synchronization mode after entering the Attribute interface.

2. Connect the frequency meter to the 13 MHz clock test port at the cabinet top. The 13 MHz clock-testing interface is located at the top of the Power Distribution Module (PDM) panel, as shown in Figure 1.

Normal Result

Troubleshooting

Exit from Test

Precautions

Tools

Test Procedure



F I G U R E 1 – LO C AT I O N O F 13M C L O C K TE S T I N G I N T E R F AC E I N T H E CAB I N E T

3. Connect the serial port on the notebook computer to the External Test Port (ETP) of the CMM.

4. Start LMT in the computer and click (the CLK Calibrate icon) in the menu to enter the CKU calibration interface.

5. Press Start to start communication with the BSC. When the program starts, only the Start button is available and all other buttons are unavailable. After the communication with BSC starts, the Start button becomes available and all other buttons such as Calibrate becomes unavailable.

6. The current CKU values shown in the CKU calibration interface include DAC value and voltage. Calibrate the DAC value in the calibration group box. Enter a DAC value manually or use the arrows to adjust the DAC value. The Step value determines the length of each increase or decrease in the DAC value. Three options are available: 1, 3 and 10. After specifying the DAC value, the system calculates the corresponding voltage automatically. Press the Calibrate button to notify the BSC to start calibration. Observe the frequency meter until the clock adjusts to 13 MHz.

7. Press Save to save the DAC value in the Flash memory, and the system adopts the value saved in Flash memory at the reboot. Save the new DAC value before rebooting the system otherwise the system uses the old DAC value saved earlier in Flash memory.

8. Press End to terminate the calibration.

The clock calibrates to 13.000000 MHz ± 0.025 ppm.

If the clock calibration is not possible to be in the above given range, then replace CMM.

Normal Result

Troubleshooting



Reset the BTS to its original mode if previously it works in the eternal synchronization mode.

Cabinets Air Filters Cleaning

The BTS (V2.9) cabinet has two air filters: One is installed in the air filter plug-in box at the bottom of the cabinet and the other is at the front door.

None.

1. Replace the air filter at the bottom of the cabinet in the following way:

i. Open the cabinet door, and loosen the two screws at both sides of the air filter plug-in box and hold the two handles to pull out the air filter plug-in box.

ii. Loosen the screws to take off the mechanical parts on the air filter, and then remove the air filter.

iii. Wash the air filter with clean water and air. Dry it or replace it with a new air filter.

iv. Install the air filter into the air filter plug-in box again. Make sure that the air filter is flat.

v. Push the air filter plug-in box along the guide rail into the cabinet, until the rear side of the panel presses closely against the front side of the guide rail. Fasten two screws and close the cabinet door.

vi. Connect the protection ground of the cabinet to the earth properly.

Caution: In dismounting the air filter plug-in box, protect the RF cables above it.

2. Replace the air filter on the cabinet door in the following way:

i. Open the cabinet door and take off the springs pressing the air filter. Take care of the hooks at both sides of the pressing springs and do not pull the springs by force.

ii. Take off the fastening screws on the upper and lower pressing strips to remove the upper and lower pressing strips and the air filter.

iii. Wash the air filter with clean water and air dry it or replace it with a new air filter.

iv. Install the dust screen into the cabinet door again and make sure that the dust screen is installed flatly. Close the cabinet door.

Exit from Test

Tools

Test Procedure



Lightning Protection and Grounding Check Lightning Arresters Check

SiteMaster

50 Ω N(F) matching load

One testing cable

Adapters N(M)-7/16DIN(M), N(M)-7/16DIN(F) The following steps describe how to check lightning arresters:

1. Switch off the power of all TRMs of the corresponding carrier shelf on the PDM front panel. See Appendix C for the Details.

2. Loosen the jumper connectors connected to both ends of the lightning arrester.

3. Calibrate the SiteMaster.

i. Press the START CAL button to perform zero calibration prior to the test.

ii. Connect the short calibration terminal (OPEN) to RF/REFLECTION on the backplane, and press ENTER.

iii. Connect the open-circuit calibration terminal (OPEN) to RF/OUT, and press ENTER to calibrate the load.

iv. Select SAVE SETUP to save the calibration value (optional).

4. Connect the SiteMaster to a port on the lightning arrester via testing cable.

5. Connect the other port on the lightning arrester to the matching load.

6. Read the SiteMaster and examine whether the return loss of the lightning arrester is within the valid range.

7. Repeat Steps (4) through (6) to measure the return loss of the other port on the lightning arrester.

8. Adjust the multimeter to X10K to measure the resistance of the conductor in the high-frequency sockets at both ends of the lightning arrester.

9. Adjust the multimeter to X1 to measure the resistance between the conductor in the antenna and the ground.

Tools

Test Procedure



The technical indices of the lightning arrester comply with the product specifications. The measured value is more than 20 dB.

The resistance of the conductor in the high-frequency sockets at both ends of the lightning arrester is more than 20 MΩ.

The resistance between the conductor in the antenna and the ground is approximately 0 Ω.

If the measured value is beyond the valid range, replace the lightning arresters.

Connect the jumper connectors to the two ports on the lightning arrester. Power-on the TRMs of the carrier shelf on the PDM panel to recover the system.

Take care of the grounding connection of the lightning arrester, so that they may not be damaged.

Grounding Cables Check

None.

Check if connectors of the grounding cables are loose, rusty or aged.

The connectors are not loose, rusty or aged.

Replace the grounding cables and reconnect them.

Grounding Resistance Measurement

Earth resistance tester (model ZC-8)

1. Disconnect the grounding down-lead from the equipment, and connect it to the earth resistance tester.

2. Mount two auxiliary piles 20 m and 40 m away from the testing point (remote voltage/remote current). To ensure good contact between the piles and the earth, sprinkle water around them.

3. Connect the two auxiliary piles and terminals of the earth resistance tester with a conducting wire. Shake the handle of the tester to measure the grounding resistance. For the battery power supply, you can read the grounding resistance directly by pressing the button.

Grounding resistance ≤ 5 Ω

Note: Measure the grounding resistance according to the design requirements, if any.

Normal Result

Troubleshooting

Exit from Test

Precautions

Tools

Test Procedure

Normal Result

Troubleshooting

Tools

Test Procedure

Normal Result



Check for the reliable connection of the grounding down-lead to the ground grid.

Check if the ground grid system complies with the design, and if any resistance-reducing agent is applied on regular basis.

Antenna Feeder System Check Antenna Feeder Interfaces Check

None.

Observe the LEDs on the AEM panel and check for SWR1 and SWR2 alarms.

Check if the RF cables of the antenna feeder system are aged.

The LEDs on the AEM panel show no SWR alarms.

The RF cables of the antenna feeder system are not aged.

According to the VSWR measuring method, check the VSWR of the jumpers, main feeders and antennas. Check segment by segment from the output port of the combiner to locate the defective parts. Replace the defective parts until the fault is removed.

If the RF cables are aged, replace them.

Antennas and Towers Firmness Check

Spanner

Check for the proper setting of fixing clips of antennas and antenna supports.

Check for the proper setting of fixing clips of the tower top amplifiers.

The fixing clips of antennas and tower top amplifiers are reliable and do not shake or slide.

Tighten the fastening screws with a spanner.

Troubleshooting

Tools

Test Procedure

Normal Result

Troubleshooting

Tools

Test Procedure

Normal Result

Troubleshooting



Directional Antennas Tilt Check

Angle gauge

Check the tilt of a directional antenna by using the rotary angle gauge with a bubble tube as shown in Figure 2. If using other instrument, refer to the corresponding instrument’s instructions.

F I G U R E 2 – AN G L E G AU G E

0

1020

30

40

5060

7080

90

80

7060

50

5060

7080

90

8070

60

50

40

3020

10

43210

576

8

87

65

43

21

01

23

45

67

887

65

43

21

215

12

1

152

12

1DIAL

1. Press the angle gauge against the object to be measured, as shown in Figure 3.

Tools

Test Procedure



F I G U R E 3 – ME AS U R I N G T H E OB J E C T W I T H AN AN G L E G AU G E ( I )

1 2 3012

3

80

80

78

60

4

6

5

70

50

8

6050

70

567 234

12 156080

90

4

70

875 61

4050

30

10

20

2010

30

2

015

5

60

8090

70

101

432

8

4050

121

76 D

IAL

2

2. Rotate the dial until the bubble in the air bleeder is located in the middle of two indication rings.

3. Read the scale on the dial.

The tilt conforms to the network planning requirements.

1. Rotate the dial to set the angle.

2. Press the object to be measured against the dial chassis firmly. Move the object and chassis together until the bubble in the air bleeder moves to the middle of the two indication rings, as shown in Figure 4.

Normal Result

Troubleshooting



F I G U R E 4 – OB J E C T M E AS U R E M E N T W I T H T H E AN G L E G AU G E ( I I )

3

60

7

50

8

6

54

1250

1

278 356 4

507060 80

34

0121

60

7080

90

8

6

5

7 DIAL

0

3070

1030

4020

20

10

72

2

8090

011

7080 60

43 65

12 15

4050

81

2

215

Waterproof Status of Antenna Feeder Connectors and Lightning Protection Grounding Clips Check

Waterproof adhesive

Sealant

Insulation tape

Check for the water leakage and cracks on the antenna feeder connectors and the lightening protection grounding kit.

No leakages or cracks found.

Follow the steps below to make waterproof treatment:

1. Switch off the power of all TRMs/ETRMs of the corresponding carrier shelf on the PDM panel.

2. Remove the existing waterproof material.

Tools

Test Procedure

Normal Test

Troubleshooting



3. Wrap the waterproof adhesive at the connector, apply the seal adhesive, and then wrap the insulation tape.

4. Wrap the adhesive tape layer by layer from the bottom to avoid rainwater leakage.

5. Power-on the TRMs of the corresponding carrier shelf on the PDM panel.

Other Checks Iron Towers Check (Optional)

None.

Check the tower lamps.

Check the tower structure and the base by measuring the verticality and height of the iron tower.

Check the stronghold of structure bolts.

Check the corrosion-proof and rust-proof conditions.

The structure distortion, base sinking and verticality of the iron tower all satisfy the design requirements. The bolts are fixed tightly and there is no corrosion or rust on them.

Handle the abnormalities as per procedure.

Mast Check (Optional)

None.

Check the following:

Installation of the mast fasteners

Stresses of the mast

Cables on the cabling wire tower and anchors

Corrosion-proof and rust-proof conditions

Mast verticality

The mast is firmly fixed and there is no corrosion or rust. The mast is vertical.

Resolve the exceptions as per procedure.

Tools

Test Procedure

Normal Result

Troubleshooting

Tools

Test Procedure

Normal Result

Troubleshooting



Transmission Equipment Running Status Check

None.

Observe whether LEDs on the transmission equipment indicate any alarm.

No alarm is present.

Refer to User’s Manual of the transmission equipment.

Storage Batteries Running Status Check

None.

Check for battery leakage and reliable contact of the connection lines.

There is no battery leakage and the connection is normal.

Refer to the battery instructions.

Tools

Test Procedure

Normal Result

Troubleshooting

Tools

Test Procedure

Normal Result

Troubleshooting





C h a p t e r 7

Routine Maintenance Data Record Forms

This chapter introduces various data record forms involved in routine maintenance.

Daily Maintenance Record Form T AB L E 4 – D AI L Y M AI N T E N A N C E R E C O R D FO R M

Daily Maintenance Record Form

On-duty Date:

On-duty Time:

Person Handing Over the Shift:

Relief Person:

Current Alarm Records of the BTS

Site No. Alarm Description

Time of Occurrence

End Time Remarks

History Alarm Records of the BTS

Site No. Alarm Description and Troubleshooting Remarks



Daily Maintenance Record Form

History Notification Message Records of the BTS

Site No. Notification Message Description and Troubleshooting

Remarks

Real time Status Abnormality Records of Cells

Site No. Abnormalities and Troubleshooting Remarks

Customer Complaints

Site No. Complaint Description and Troubleshooting

Remarks

Shift Description:

Shift Leader:

Verification:

Chapter 7 - Routine Maintenance Data Record Forms


Weekly Maintenance Record Form T AB L E 5 – W E E K L Y M AI N T E N AN C E R E C O R D FO R M

Weekly Maintenance Record Form

Maintenance Time: Maintenance Staff:

Check Item Analysis and Conclusion

Exception Handling Remarks

History alarms

History notification messages

Alarm frequency

Performance data

Shift Leader:

Verification:



Quarterly Maintenance Record Form T AB L E 6 – QU AR T E R L Y M AI N T E N AN C E R E C O R D FO R M

Quarterly Maintenance Record Form

Maintenance Time: Maintenance Staff:

Category Check Item Check Result Remarks

The coverage test result is normal

Yes No

The conversation test result is normal

Yes No

Conversation, coverage and handover tests

The handover test result is normal

Yes No

The burglar nets, doors and windows are intact

Yes No

Equipment room temperature

Temperature:

Equipment room humidity

Humidity:

The air conditioners in the equipment room are running normally

Yes No

The equipment room is clean

Yes No

The equipment room lighting is normal

Yes No

The sockets in the equipment room are normal

Yes No

The safety facilities in the equipment room are complete

Yes No

Equipment room maintenance

The environment alarm collection devices are normal

Yes No

The power supply of cabinets is normal

Yes No

The fans run normally Yes No

Checking the principal equipment

The boards run normally

Yes No

Shift Leader:

Verification:



Yearly Maintenance Record Form T AB L E 7 – Y E AR L Y M AI N T E N AN C E R E C O R D FO R M

Yearly Maintenance Record Form

Maintenance Time:

Maintenance Staff:

Category Check Item Check Result Remarks

Measuring the output power of amplifiers

Output power:

Measuring the VSWR VSWR:

The clock calibration is completed

Yes No

Checking the principal equipment

The air filters of each cabinet are clean

Yes No

The lightning arresters are normal

Yes No

The grounding cables are reliably connected

Yes No

Checking the grounding and lightning protection status

Measuring the grounding resistance

Grounding resistance:

The antenna feeder interfaces are normal

Yes No

The TTAs are fixed firmly

Yes No

The tilt of the directional antennas satisfies the requirements

Yes No

Checking the antenna feeder system

The antenna feeder interfaces and the lightning protection grounding clips are normal

Yes No

The iron towers are normal

Yes No

The masts are normal Yes No

The transmission equipment runs normally

Yes No

Checking others

The storage batteries are normal

Yes No

Shift Leader:

Verification:



Emergency Troubleshooting Record Form T AB L E 8 – EM E R G E N C Y TR O U B L E S H O O T I N G R E C O R D FO R M

Emergency Troubleshooting Record Form

Site Name: Handled by:

Time of Occurrence: Solved Time:

Fault Source: Subscriber complaints Alarm system

___ Detected in daily maintenance Others

Fault Type:

Fault Symptom:

Troubleshooting:

Result:

Leader’s comments:



Board Replacement Data Record Form T AB L E 9 – B O AR D R E P L AC E M E N T D AT A R E C O R D FO R M

Board Replacement Data Record Form

BTS No.: Maintenance Staff:

Board Type

Board Slot

Time of Fault

Replace-ment Time

SN of the Faulty Board

SN of the Replacing Board





A p p e n d i x A

Normal and Abnormal Status of Boards

Normal Status of Boards

Table 10 lists the normal status of LEDs on CMM panel.

T AB L E 10 – NO R M AL S T AT U S O F T H E LEDS O N CMM P AN E L

Name Description Color Normal Status

RUN Running LED Green Green LED is on

SYN System synchronization LED

Green/red Green LED flashes at 4 Hz: Boot is running

Green LED flashes at 1 Hz: Application is running

CLK Clock LED Green/red Green LED is on: Network synchronization clock at the Abis interface

Green LED flashes at 1 Hz: SDH network synchronization clock

Off: Free running

MST Active/standby status LED

Green Green LED is on: Network synchronizing

Green LED flashes at 1 Hz: Phase is locked

Off: Free running

STA Status LED Green/red Off: Normal

CMM




Green LED flashes at 1 Hz: System is being initialized

Green LED flashes at 4 Hz: Software loading in progress

Table 11 lists the normal status of the LEDs on TRM panel.

T AB L E 11 – NO R M AL S T AT U S O F T H E LEDS O N TRM P AN E L


PWR Power LED Green/red Green LED is on: Normal

RUN Running LED Green Green LED flashes at 4 Hz: Boot is running

Green LED flashes at 1 Hz: Application is running

MOD Channel mode LED

Green/red Green LED is on: BCCH indication. See the Note below the table.

Green LED flashes at 1 Hz: BCCH indication; System Info broadcast

Off: No BCCH indication

ACT Channel activation LED

Green Green LED flashes: Channel activation indication (SDCCH, TCH)

Off: No traffic in all the channels and the channels are deactivated.

See the Note below the table.

STA Status LED Green/red Off: Normal

Green LED flashes at 1 Hz: System is being initialized

Green LED flashes at 4 Hz: Software loading in progress

TRM

Appendix A - Normal and Abnormal Status of Boards


Note:

The green MOD LED represents a temporary status. It is abnormal if the green LED is on and does not flash, indicating that the TRM has not received any System Info message.

The channel activation LED (ACT) shows the number of activated channels. According to the number of channels activated, the TRM adjust the LED control pulse width to display the number of channels activated. For the details, refer to Table 12.

T AB L E 12 – D I S P L AY O F T H E C H AN N E L AC T I V AT I O N LED ( ACT)

Number of Activated Timeslots LED Display

0 00000000,00000000

1 10000000,00000000

2 10100000,00000000

3 10101000,00000000

4 10101010,00000000

5 10101010,10000000

6 10101010,10100000

7 10101010,10101000

8 10101010,10101010

Note:

0 indicates off and 1 indicates on.

Each bit display time is Td and temporarily defined as 4 Hz (0.25 s) while the entire status display period is 16 * Td = 4 s.

For combined channels such as TCH/F, SDCCH/8, and SDCCH/4, Td can be regarded as activated, as long as one logical sub-channel (such as an SDCCH sub-channel) in this channel combination is activated.

When some timeslots are allocated as common control channels and private control channels (such as mainBCCH channel combination and extBCCH channel combination), the status of these timeslots is defined as inactivated and not included in the display statistics of ACT.

If extBCCH channel combination is used, the green LED flashes only when all configured BCCH channels are normal and system messages are being sent. If one or several extBCCH channels are blocked or defective, the red LED will flash according to the number of channels blocked or



defective. The flashing time is the same as described above. If all the allocated extBCCHs are blocked or defective, the red LED will be solid on.

Table 13 lists the normal status of the LEDs on Combiner Distribution Unit (CDU) panel.

T AB L E 13 – NO R M AL S T AT U S O F T H E LEDS O N CDU P AN E L


FPO Forward power output Green On: Normal

SWR1 VSWR level-1 alarm Red Off: No alarm

SWR2 VSWR level-2 alarm Red Off: No alarm

PWR LNA power supply Green On: Normal

LNA LNA alarm Red Off: No alarm

Table 14 lists the normal status of the LEDs on Radio Distribution Unit (RDU) panel.

T AB L E 14 – NO R M AL S T AT U S O F T H E LEDS O N RDU P AN E L


PWR LNA power supply Green On: Normal

LNA LNA alarm Red Off: No alarm

Abnormal Status of Boards

Table 15 lists the abnormal status of the LEDs on CMM panel.

T AB L E 15 – AB N O R M AL S T A T U S O F T H E LED S O N CMM P AN E L

Name Description Color Abnormal Status

PWR Power LED Green/Red Red LED is on: Alarm

Off: Power off or other reasons

RUN Running LED Green Red LED is on or flashes: The system is abnormal

SYN System synchronization mode LED

Green/Red Red LED flashes at 4 Hz: The E1 out-

CDU

RDU

CMM

Appendix A - Normal and Abnormal Status of Boards



of-frame alarm

Red LED is on: The E1 line is broken or not connected

CLK Clock LED Green/Red Red LED is on: Clock fault

STA Status LED Green/Red Red LED flashes at 1 Hz: LAPD link disconnection

Red LED flashes at 4 Hz: HDLC link disconnection

Red LED is on: Other alarms such as temperature, clock or frame number alarms

Table 16 lists the abnormal status of the LEDs on TRM panel.

T AB L E 16 – AB N O R M AL S T A T U S O F T H E LED S O N TRM P AN E L


PWR Power LED Green/red Red LED is on: Alarm

Off: Power off or other reasons

RUN Running LED Green Red LED is on or flashes: The system is abnormal

MOD Channel mode LED

Green/red The red LED is on: BCCH blocked (including blocking of any extBCCH

ACT Channel activation LED

Green The red LED flashes: Channel blocking indication (SDCCH, TCH…)

The red LED is on: The CU is prohibited

STA Status LED Green/red Red LED flashes at 1 Hz: LAPD link

TRM




disconnection

Red LED flashes at 4 Hz: HDLC link disconnection

Red LED is on: Other alarms such as temperature, clock or frame number alarms

Table 17 lists the abnormal status of the LEDs on CDU panel.

T AB L E 17 – AB N O R M AL S T A T U S O F T H E LED S O N CDU P AN E L


FPO Forward power output Green Off: Abnormal

SWR1 VSWR level-1 alarm Red On: Alarm

SWR2 VSWR level-2 alarm Red On: Alarm

PWR LNA power supply Green Off: Abnormal

LNA LNA alarm Red On: Alarm

Table 18 lists the abnormal status of the LEDs on RDU panel.

T AB L E 18 – AB N O R M AL S T A T U S O F T H E LED S O N RDU P AN E L


PWR LNA power supply Green Off: Abnormal

LNA LNA alarm Red On: Alarm

CDU

RDU


A p p e n d i x B

Replacing Modules and Parts

Precautions

The replacement defective modules and parts is a common and very important method used during routine maintenance. During module replacement, it is recommended to contact the relevant technicians or ZTE local maintenance staff for technical support and guidance.

The following principles should be considered necessary during the replacement of modules and parts:

Store undamaged spare parts in antistatic bags (moisture-proof bags are recommended). Sort the spare parts in cartons and label the cartons for easy identification.

Wear an antistatic wrist strap plugging/unplugging any module. Connect the antistatic wrist strap to the grounding terminal of the rack. Do not touch the grounding terminal after the connection.

Note: There is 1 MΩ resistor connected in series between the antistatic wrist strap and the grounding terminal, and any touch with the grounding terminal may bypass this resistor.

While holding a module, do not touch the circuits, components or wiring slots on the module. Do not plug/unplug the module with extra force. The right steps are as follows:

i. Hold the handles of the panel and slightly uplift the module.

ii. Align the module with the backplane and then insert the module slightly to avoid bending the pins or slots on the backplane or module.



iii. Tighten the fixing screws on the module after inserting the module.

Use a torque spanner to plug/unplug the RF cable on the front panel of the rack. Do not use force to avoid destroying the RF cable connector.

While installing the feeder jumper, insert the connector of the feeder jumper into the socket of the AEM and tighten the connector by hand.

Indicate the cause of the fault in the modules and keep the defective modules in antistatic bags. Sort the modules and store them as suitable.

Install a standard dummy panel in the empty slot to protect against dust.

Make sure that the module is properly inserted in the slot.

Avoid hot plugging/unplugging during module replacement.

Ground the test instrument while using.

CMM Replacement

Antistatic wrist strap

Phillips screwdriver

1. Determine the necessity to replace the module through fault observation and analysis.

2. Prepare a new module of the same model as of the defective module.

3. Prepare an antistatic bag, a moisture-proof bag, a carton and labels for identification.

1. Turn off the power switch of CMM. See Appendix C for the location of the power switch.

2. Wear an antistatic wrist strap.

3. Perform the active/standby changeover before replacing the active CMM to make the standby module become active.

4. Loosen the fixing screws on the CMM panel and pull the handles on the defective module outwards with one hand. When the module leaves the slot and springs outwards, hold the lower edge of the module with the other hand, and then pull out the module slightly. During this operation, avoid touching the components and circuits on the module.

5. Keep the defective board in an antistatic bag, containing a moisture-proof bag. Label it indicating the module model, defective slot number, program version and fault. Store the defective module properly in a carton. Label the carton for easy identification in the future.

Tools

Preliminary Setup

Procedure

Appendix B - 错误！未定义样式。


6. According to the slot specified on the plug-in box, insert the spare CMM into the plug-in box. Push the module with proper force until it is in the proper location and then fasten the fixing screws.

7. Power-on the CMM again.

1. Self-test process starts on powering-on the CMM. Upon successful self-test, LEDs show normal state and the module recovers services, indicating the successful replacement.

2. If the module fails the self-test, it performs the self-test again and then shows the abnormity of the relevant unit, with the services not recovered, indicating replacement failure.

3. Analyze the fault through the foreground and background to make sure that the fault is caused by the module.

TRM/ETRM Replacement






4. Record the locations of RF cables on the front panel of the defective module, so as for easy restore of the cables after module replacement.

1. Turn off the power switch of TRM/ETRM. See Appendix C for the location of the power switch.


3. Unplug the RF cables on the TRM/ETRM front panel.

4. Loosen the fixing screws on the TRM/ETRM panel and pull the handles on the defective module outwards with one hand. When the module leaves the slot and springs outwards, hold the lower edge of the module with the other hand, and then pull out the module slightly. During this operation, avoid touching the components and circuits on the module.


Confirmation

Tools

Preliminary Setup

Procedure



6. According to the slot specified on the plug-in box, insert the spare TRM/ETRM into the plug-in box. Push the module with proper force until it is in the proper location and then fasten the fixing screws.

7. Power-on the TRM/ETRM again.

1. Self-test process starts on powering-on the CMM. Upon successful self-test, LEDs show normal state, and the module recovers services, indicating the successful replacement.



AEM Replacement






4. Record the locations of RF cables (such as RF cables and feeder jumpers) on the front panel of the defective module, so as for easy restore of the cables after module replacement.

1. Turn off the power supply of AEM. The AEM is powered through the TRM/ETRM. Therefore, all the TRMs/ETRMs should be turned off. See Appendix C for the location of the power switch.


3. Unplug the RF cables (such as RF cables and feeder jumpers) from the front panel.

4. Loosen the fixing screws on the AEM panel and pull the handles on the defective module outwards with one hand. When the module leaves the slot and springs outwards, hold the lower edge of the module with the other hand, and then pull out the module slightly. During this operation, avoid touching the components and circuits on the module.

5. Keep the defective board in an antistatic bag, containing a moisture-proof bag. Label it indicating the module model, defective slot number, program version and fault. Store the

Confirmation

Tools

Preliminary Setup

Procedure



defective module properly in a carton. Label the carton for easy identification in the future.

6. According to the slot specified on the plug-in box, insert the spare AEM into the plug-in box. Push the module with proper force until it is in the proper location and then fasten the fixing screws.

7. Power-on the AEM again.

Self-test process starts on powering-on the CMM. Upon successful self-test, LEDs show normal state, and the module recovers services, indicating the successful replacement.

If the module fails the self-test, it performs the self-test again and then shows the abnormity of the relevant unit, with the services not recovered, indicating replacement failure.

Analyze the fault through the foreground and background to make sure that the fault is caused by the module.

PDM Replacement






1. Turn off the BTS main switch (ON/OFF) at the top of the cabinet, as shown in Figure 5.

Confirmation

Tools

Preliminary Setup

Procedure



F I G U R E 5 – BTS M AI N S W I T C H


3. Loosen the fixing screws on the PDM panel and pull the handles on the defective module outwards with one hand. When the module leaves the slot and springs outwards, hold the lower edge of the module with the other hand, and then pull out the module slightly. During this operation, avoid touching the components and circuits on the module.


5. According to the slot specified on the plug-in box, insert the spare PDM into the plug-in box. Push the module with proper force until it is in the proper location and then fasten the fixing screws.

6. Power-on the BTS main switch again.

1. Self-test process starts on powering-on the other modules (such as CMM and TRM). Upon successful self-test, LEDs show normal state, and the module recovers services, indicating the successful replacement.



Confirmation



MCMM Backplane Replacement

The MCMM backplane is replaced from the front side of the rack. The customer and relevant technical personnel must approve the backplane replacement, since the backplane replacement may influence the communication in a cell.



1. Determine the necessity to replace the backplane through fault observation and analysis.

2. Prepare a new backplane of the same model as of the defective backplane.


4. Record the slots for the modules on the defective backplane, so as for easy restore of the modules in their original slots after backplane replacement.

1. Turn off the power supply.


3. Remove all the modules in the layer. Loosen the fixing screws on the modules and pull the handles on the module outwards with one hand. When the module leaves the slot and springs outwards, hold the lower edge of the module with the other hand, and then pull out the module slightly. During this operation, avoid touching the components and circuits on the module.

4. Loosen the screws fixing the backplane by using a cross screwdriver and remove the backplane.

5. Record the cable locations that are at the inner side of the backplane, so as for easy restore of the cables after backplane replacement.

6. Slightly pull cables outward to prevent them from dropping outside the shelf.

7. Fix the new backplane with screws.

8. Insert modules correctly into their original slots. Push the modules with proper force until it is in the proper location and then fasten the fixing screws.

9. Power-on the shelf of this layer and start the system again.

Self-test process starts on powering-on the shelf and then loads the module versions. Upon successful self-test, LEDs show normal state, and the module recovers services, indicating the successful replacement.

Tools

Preliminary Setup

Procedure

Confirmation



If the module fails the self-test, it performs the self-test again and then shows the abnormity of the relevant unit, with the services not recovered, indicating replacement failure.

Analyze the fault through the foreground and background to make sure that the fault is caused by the module.

MTRM Backplane Replacement

The MTRM backplane is replaced from the front side of the rack. The customer and relevant technical personnel must approve the backplane replacement, since the backplane replacement may influence the communication in a cell.






4. Record the slots for the modules on the defective backplane and cable locations (such as RF cables and feeder jumpers), so as for easy restore of the modules in their original slots after backplane replacement.

1. Turn off the power supply.


3. Unplug cables on all the module front panels on the layer.

4. Remove all the modules in the layer. Loosen the fixing screws on the modules and pull the handles on the module outwards with one hand. When the module leaves the slot and springs outwards, hold the lower edge of the module with the other hand, and then pull out the module slightly. During this operation, avoid touching the components and circuits on the module.

5. Loosen the screws fixing the backplane by using a cross screwdriver and remove the backplane.

6. Record the cable locations that are at the inner side of the backplane, so as for easy restore of the cables after backplane replacement.

7. Slightly pull cables outward to prevent them from dropping outside the shelf.

8. Record the physical location of the shelf in the layer indicated by the DIP switch on the backplane.

Tools

Preliminary Setup

Procedure



9. Insert the new backplane and push it into the empty shelf. Attach the cables back into the sockets on the backplane. Apply proper force to insert the cables.

10. Set the DIP switch to the position as on the original backplane.

11. Fix the new backplane with screws.

12. Insert modules correctly into their original slots. Push the modules with proper force until it is in the proper location and then fasten the fixing screws.

13. Power-on the shelf of this layer and start the system again.

1. Self-test process starts on powering-on the shelf and then loads the module versions. Upon successful self-test, LEDs show normal state, and the module recovers services, indicating the successful replacement.



Fan Module Replacement






1. Turn off the power supply of the fan module by turning off the power supply of TRM/ETRM. See Appendix C for the location of the power switch of TRM/ETRM.

Note: The fans start working immediately if the TRM/ETRM on the corresponding carrier shelf is powered-on. The fan power is directly introduced from the cabinet-top filter via the busbar.

2. Loosen the six spring screws on the fan plug-in box panel by to remove the fan plug-in box panel. Figure 6 shows the locations of the spring screws.

Confirmation

Tools

Preliminary Setup

Procedure



F I G U R E 6 – LO C AT I O N S O F S P R I N G S C R E W S

1-6: Spring Screws

Tip: Functions of the spring screws:

Spring screws 2 and 5 fixes the panel and the fan plug-in box

Spring screws 1, 3, 4, and 6 fix the panel and the rack.

3. Loosen the two bolts that fasten the fan module to the chassis with a Phillips screwdriver, as shown in Figure 7.

F I G U R E 7 – LO O S E N I N G T H E B O L T S O F T H E F AN M O D U L E

1-2: Spring bolts



4. Pull out the fan module along the guide rail.

5. Keep the defective module in a moisture-proof bag. Label the bag, indicating its model and the fault information. Keep the module in a carton. Label the carton for easy identification in future.

6. Insert the new module into the slots. Push the module with proper force into the backplane along the guide rail until it is in the proper location.

7. Fasten the fan module to the fan chassis with two bolts.

8. Power-on the fan module.

Observe the fans for their normal operation. If they are working normal, fix the spring screws on the fan plug-in box panel.

Trunk Cable Replacement




2. Make sure that the model of the new trunk cable is the same as that of the BTS trunk cable.

Note: The trunk cables are all digital cables of two specifications: 75 Ω coaxial cables and 120 Ω twisted-pair cables.

3. Check the labels at both ends of the trunk cable. Make sure that they are in one-to-one correspondence. That is, one end connects the trunk interface at the top of the BTS cabinet and the other end connects the trunk equipment.

4. Test the new trunk cable with a multimeter and ensure the trunk cable is not shorted or disconnected.

5. Prepare a moisture-proof bag, a carton and labels for identification.

During the operation, take care of the insulation layer of the digital trunk cable. Negligence may damage the trunk cable.

Caution: Replacing a trunk cable will interrupt services of the BTS.

1. Cut the cable ties of the trunk cable to be replaced. Unplug the E1 PORT connector of the trunk cable from the top of the cabinet to remove the trunk cable. Figure 8 shows the location of the E1 PORT interface at the top of the cabinet.

Confirmation

Tools

Preliminary Setup

Precautions

Procedure



F I G U R E 8 – LO C AT I O N O F T H E E1 PORT AT T H E TO P O F T H E C AB I N E T

E1 PORT

Caution: Do not apply immense force while removing the old trunk cable.

2. Keep the defective trunk cable in a moisture-proof bag. Label the bag, indicating its model and the fault information. Keep the module in a carton. Label the carton for easy identification in future.

3. Connect the connector of the new trunk cable according to the labels at both ends of the new trunk cable to the E1 PORT interface at the top of the cabinet and to the trunk equipment.

1. Check if the RF connector of the trunk cable is reliable and is connected in the proper manner.

2. If everything is normal, bind the trunk cable with cable ties in accordance with the binding requirements of the trunk cable.

RF Cable Replacement



1. Determine the RF cable to be replaced.

2. Different sites require different cable suites. Select the cable suites according to the requirements of new changed site type.

Confirmation

Tools

Preliminary Setup



3. Check if the grounding core wire of the new cable is in good contact and if the pins of the core wire are normal. Make sure that the contacts of SMA or N connector are reliable.

4. Record all the connection positions of the RF cable to be replaced.


1. Turn off the power of the corresponding TRMs/ETRMs (including PAs and TRUs) before replacing the transmitting RF cable. See Appendix C for the location of the power switch.

2. Loosen the SMA or N connectors at both ends of the RF cable to remove the cable.

3. Keep the defective RF cable in a moisture-proof bag. Label the bag, indicating cables model and fault information. Store it properly in a carton. Label the carton for easy identification in the future.

4. Connect the new RF cable according to the original connection mode of the old RF cable.

Caution: Apply even force during the operation. While tightening the SMA connector screws, apply proper force and shake it to align with the socket without damage.

5. Power-on the TRMs/ETRMs (including PAs and TRUs) again.

1. Observe the LEDs of each board. Upon successful replacement the LEDs shows the normal status.

2. Dial calls to check if the BTS runs normally after the replacement.

Cabinet-Top 1/2'' Soft Jumpers Replacement

LDF4 block cutter

LDF4 block installation tool

Two Adjustable wrenches

Hacksaw

Needle file

Paper knife

Adjustable hot air blower

Multimeter

Antenna feeder analyzer (SiteMaster)

1. Determine the necessity to replace the 1/2 inch soft jumper at the cabinet top through fault observation and analysis.

Procedure

Confirmation

Tools

Preliminary Setup



2. Prepare a new spare part of the same model as of the defective part.


1. Turn off the power switch of TRMs/ETRMs of the corresponding carrier shelf. See Appendix C for the location of the power switch.

2. Remove the jumper by an adjustable wrench. Remove the connectors at its two ends and check if the connectors are damaged. Replace the connectors if they are damaged.

3. Keep the defective jumper in a moisture-proof bag. Label it indicating the model and fault information. Store it in a carton and label the carton for easy identification in the future.

4. Test the new jumper, especially its connectivity with a multimeter.

Caution: Correctly dispose of the feeder residues. If sundries such as copper scraps enter the connector, it affects the performance of the antenna feeder system.

5. Connect the new jumper.

6. At the other end of the jumper, measure the performance indices of the antenna feeder by using an antenna feeder analyzer (SiteMaster).

7. If the indices are normal, connect the jumper to the antenna feeder interface at the top of the cabinet.

8. Power-on all the TRMs/ETRMs of the corresponding carrier shelf on the PDM panel.

1. Observe the running status of the TRMs/ETRMs and AEMs. Upon successful replacement the LEDs shows the normal status.

2. Dial calls to check if the BTS runs normally after the replacement.

Procedure

Confirmation


A p p e n d i x C

PDM Front Panel Power Switches

The TRM and CMM Power switches are on the PDM front panel, as shown in Figure 9.

F I G U R E 9 – PO W E R S W I T C H O F T H E TRM AN D CMM O N PDM FR O N T PAN E L

CMM2CMM1SLOT3-2 SLOT3-3 SLOT3-4SLOT3-1

SLOT2-1 SLOT2-4SLOT2-2 SLOT2-3SLOT1-4SLOT1-3SLOT1-2SLOT1-1

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFFOFF

ON ON

OFFOFF

ON ON

OFF

ON

OFF

ON

PDM



Table 19 shows the physical correspondence between power switches and the controlled carriers of TRM.

T AB L E 19 – PH Y S I C AL C O R R E S P O N D E N C E B E T W E E N P O W E R S W I T C H E S AN D T H E C O N T R O L L E D C AR R I E R S O F TRM

Power Switch

Carrier Power Switch

Carrier

Slot 1-1 The first carrier module in the first-layer carrier shelf

Slot 2-3 The third carrier module in the second-layer carrier shelf

Slot 1-2 The second carrier module in the first-layer carrier shelf

Slot 2-4 The fourth carrier module in the second-layer carrier shelf

Slot 1-3 The third carrier module in the first-layer carrier shelf

Slot 3-1 The first carrier module in the third-layer carrier shelf

Slot 1-4 The fourth carrier module in the first-layer carrier shelf

Slot 3-2 The second carrier module in the third-layer carrier shelf

Slot 2-1 The first carrier module in the second-layer carrier shelf

Slot 3-3 The third carrier module in the third-layer carrier shelf

Slot 2-2 The second carrier module in the second-layer carrier shelf

Slot 3-4 The fourth carrier module in the third-layer carrier shelf

Note:

Definition of the carrier shelf layers: From bottom to top, there are, the first layer, the second layer, and the third layer in the cabinet.

Definition of the numbers of carrier modules in a carrier shelf: From left to right, there are carrier modules 1, 2, 3, and 4.

Table 20 describes the physical correspondence between power switches and CMMs.

T AB L E 20 – PH Y S I C AL C O R R E S P O N D E N C E B E T W E E N P O W E R S W I T C H E S AN D CMM S

Power Switch

Description Power Switch

Description

CMM1 Controls the power supply of the CMM of the upper shelf

CMM2 Controls the power supply of the CMM of the lower shelf


A p p e n d i x D

RF Awareness and Control Information

FCC Statement

Before using this GSM Macro Base Transceiver Station, read this important RF energy awareness and control information and operational instructions to ensure compliance with the FCC RF exposure guidelines.

Working with the equipment while in operation, may expose the technician to RF electromagnetic fields that exceed FCC rules for human exposure. Visit the FCC website at www.fcc.gov/oet/rfsafety to learn more about the effects of exposure to RF electromagnetic fields.

Changes or modifications to this unit not expressly approved by the party responsible for compliance will void the user’s authority to operate the equipment. Any change to the equipment will void FCC grant.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to the FCC Rules. This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.

For OUTDOOR use, a Directional Antenna with a maximum gain of 17 dBi is authorized for use with this unit. Outdoor antennas must be positioned to observe minimum separation of 4 m (13.12 feet) for 850 MHz unit and 3 m (9.84 feet) for 1900 MHz unit from all users and bystanders. For the protection of personnel working in the vicinity of outdoor antennas, the following guidelines for minimum distances between the human body and the antenna must be observed.

The installation of an OUTDOOR antenna must be such that, under normal conditions, all personnel cannot come within 4 m



(13.12 feet) for 850 MHz unit and 3 m (9.84 feet) for 1900 MHz unit from the outdoor antenna. Exceeding this minimum separation will ensure that the worker or bystander does not receive RF-exposure beyond the Maximum Permissible Exposure according to section 1.1310, Limits for Controlled Exposure.

CE Statement

Before using this GSM Macro Base Transceiver Station, read this important RF energy awareness and control information and operational instructions to ensure compliance with the CE RF exposure guidelines.

The assessment of compliance boundary is performed by calculation in accordance with EN50383:2002.

Changes or modifications to this unit not expressly approved by the party responsible for compliance will void the user’s authority to operate the equipment.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to the CE Rules. This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.

For OUTDOOR use, a Directional Antenna with a maximum gain of 11 dBi is authorized for use with this unit. Outdoor antennas must be positioned to observe minimum separation of 4.2 m (13.78 feet) for 900 MHz unit and 3 m (9.84 feet) for 1800 MHz unit from all users and bystanders. For the protection of personnel working in the vicinity of outdoor antennas, the following guidelines for minimum distances between the human body and the antenna must be observed.

The installation of an OUTDOOR antenna must be such that, under normal conditions, all personnel cannot come within 4.2 m (13.78 feet) for 900 MHz unit and 3 m (9.84 feet) for 1800 MHz unit from the outdoor antenna. Exceeding this minimum separation will ensure that the worker or bystander does not receive RF-exposure beyond the Maximum Permissible Exposure according to section EN50383:2002, Limits for Controlled Exposure.


A p p e n d i x E

Abbreviations

Abbreviation Full Name

A

Abis Abis Interface

AEM Antenna Equipment Module

B

BCCH Broadcast Control Channel

BER Bit Error Rate

BSC Base Station Controller

BSS Base Station Subsystem

BTS Base Transceiver Station

C

CDU Combiner Distribution Unit

CKU Clock Unit

CMM Controller & Maintenance Module

E

E1 European Standard for Digital Transmission

ETP External Test Port

ETRM Enhanced Transceiver Module

extBCCH Extended BCCH

F

FUC Frame Unit Controller

G

Gb Gb Interface

GSM Global System for Mobile communication

H

HW High Way

L



Abbreviation Full Name

LAPD Link Access Protocol on D-Channel

LMT Local Management Terminal

LNA Low Noise Amplifier

M

MCMM Backplane of CMM

MS Mobile Station

MTRM Backplane of TRM

N

NE Network Element

O

OMC Operation & Maintenance Center

OMCR Operation & Maintenance Center Radio

P

PA Power Amplifier

PDM Power Distribution Module

R

RDU Radio Distribution Unit

RF Radio Frequency

RL Radio Link

S

SDCCH Standalone Dedicated Control Channel

SWR Standing Wave Ratio

T

TCH Traffic Channel

TRU Transceiver Unit

TRM Transceiver Module

TTA Tower Top Antenna

V

VSWR Voltage Standing Waver Ratio


A p p e n d i x F

Figures

Figure 1 – Location of 13M Clock Testing Interface in the Cabinet..................................................................................... 24 Figure 2 – Angle Gauge ..................................................... 29 Figure 3 – Measuring the Object With an Angle Gauge (I)....... 30 Figure 4 – Object measurement with the Angle Gauge (II) ..... 31 Figure 5 – BTS Main Switch................................................ 34 Figure 6 – Locations of Spring Screws ................................. 34 Figure 7 – Loosening the Bolts of the Fan Module .................. 34 Figure 8 – Location of the E1 PORT at the Top of the Cabinet.. 34 Figure 9 – Power Switch of the TRM and CMM on PDM Front Panel .............................................................................. 34





A p p e n d i x G

Tables

Table 1 – Chapter Summary ................................................x Table 2 – Typographical Conventions.................................... xi Table 3 – Mouse Operation Conventions .............................. xii Table 4 – Daily Maintenance Record Form ............................ 34 Table 5 – Weekly Maintenance Record Form......................... 34 Table 6 – Quarterly Maintenance Record Form...................... 34 Table 7 – Yearly Maintenance Record Form .......................... 34 Table 8 – Emergency Troubleshooting Record Form............... 34 Table 9 – Board Replacement Data Record Form................... 34 Table 10 – Normal Status of the LEDs on CMM Panel ............. 34 Table 11 – Normal Status of the LEDs on TRM Panel .............. 34 Table 12 – Display of the Channel Activation LED (ACT) ......... 34 Table 13 – Normal Status of the LEDs on CDU Panel.............. 34 Table 14 – Normal Status of the LEDs on RDU Panel.............. 34 Table 15 – Abnormal Status of the LEDs on CMM Panel .......... 34 Table 16 – Abnormal Status of the LEDs on TRM Panel........... 34 Table 17 – Abnormal Status of the LEDs on CDU Panel........... 34 Table 18 – Abnormal Status of the LEDs on RDU Panel........... 34 Table 19 – Physical Correspondence between Power Switches and the Controlled Carriers of TRM...................................... 34 Table 20 – Physical Correspondence between Power Switches and CMMs ....................................................................... 34





A p p e n d i x H

Index

Abnormal status..................52 CMM..............................51 RDU ..............................53

Air conditioner(s) ................20 Air filters ...........................29 Alarm messages ...................5 Alarms

Current alarms..................9 Environmental alarms ......21 Fan alarms .....................22 Frequency analysis ..........14 History alarms

24-Hour .......................9 Past week...................13

Angle gauge .......................33 Antenna.............................32 Antenna Equipment Module

(AEM) ...................... 22, 32 Antenna feeder ............. 32, 35 Antennas tilt................. 33, 34 BTS main switch .................59 Burglarproof Nets check .......19 Call loss.............................19 Cells status (real time).........10 Cleanliness.........................20 Clock calibration .................27 Code slip............................23 Communication link failure ...23 Controller & Maintenance

Module (CMM),.......... 22, 70 Conversation test ................19 Coverage ...........................19 Coverage test .....................19 DC voltage (nominal)...........22 Disaster protection ..............21 Doors check .......................19 Fans..................................22 Firefighting facilities ............21 Fluctuation range ................22 Front-end ..........................26 Grounding......7, 31, 35, 55, 67 Grounding cables ................31 Grounding clips check ..........35

Grounding down-lead .......... 32 Grounding resistance........... 31 GSM1800 .......................... 26 GSM900 ............................ 26 Handover .......................... 19 Handover test .................... 19 History Notification messages

24-Hour......................... 10 Past week ...................... 14

Humidity .................. 7, 20, 21 Long-term (operating) ..... 20 Short-term (operating) .... 20

Iron towers........................ 36 Isolation..............................6 LED status analysis ...............5 Lighting............................. 21 Lightning arresters.........30, 31 Lightning ground ..................7 Local Maintenance Terminal

(LMT) .......................27, 28 Mast ................................. 36 MCMM backplane ................ 61 MTRM backplane................. 62 Normal status

CDU .............................. 50 CMM.............................. 47 RDU .............................. 50 TRM .............................. 48

OMCR .................................6 OMCR version ......................2 Operation log .......................5 Output power................25, 26 Performance analysis ............6 Performance indices ... 6, 17, 68 Performance management

interfaces.........................6 Performance report ........15, 17

Daily ............................. 11 Monthly ......................... 17 Weekly .......................... 15

Plugging/unplugging..............6 Power amplifier common

problems ....................... 26



Power Distribution Module (PDM)............................... 59, 69

Power supply ..................... 22 Power switches

CMM ............................. 69 TRM.............................. 69

Precautions ....................7, 55 Principle Equipment Check

Quarterly....................... 22 Yearly ........................... 25

Rear-end........................... 26 Replacing modules

AEM.............................. 58 Cabinet-Top 1/2'' Soft

Jumpers..................... 67 CMM ............................. 56 Fan module.................... 63 MCMM backplane ............ 61 MTRM backplane............. 62 PDM.............................. 59 RF cable ........................ 66 TRM.............................. 57 Trunk cable.................... 65

Safety Equipment room..............21

Self-test ..............................6 Signaling tracing interface ......6 SiteMaster .........26, 30, 67, 68 Sockets .............................21 Spare parts .................. 17, 55 Temperature ....... 7, 20, 21, 24

Long-term (operating)......20 Short-term (operating).....20

Towers ..............................32 Transceiver Module (TRM) ....22 Troubleshooting LEDs

ACT .................... 24, 49, 50 CLK ......................... 23, 28 MOD........................ 24, 49 PWR ........................ 23, 24 RUN ........................ 23, 24 STA ......................... 23, 24 SYN...............................23

VSWR..................... 26, 27, 32 Waterproof.........................35 Windows check ...................19

07-ZXG10-BTS-)

Documents

keji road

tech industrial

antistatic

lapd link

channel activation

dynamic data

select file

primary mouse