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Tait TB8100 Service Manual

Tait TB8100
306 pages
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TB8100 base station
Service Manual
MBA-00016-02
Issue 2
September 2006

Table of Contents

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Tait TB8100 Specifications

General IconGeneral
BrandTait
ModelTB8100
CategoryAccessories
LanguageEnglish

Summary

1 Safety and Servicing Information

1.1 Personal Safety

General safety precautions for personnel working with the equipment.

1.2 Equipment Safety

Safety precautions related to the handling and operation of equipment.

2 Reciter Circuit Description

3 Reciter Fault Finding

3.2 Test Equipment

List of recommended test equipment for reciter fault finding procedures.

3.4 Board Replacement

Procedures for replacing faulty system interface boards and disposing of old ones.

3.5 Initial Checks

Initial checks to verify reciter power-up, configuration, alarms, and clock.

3.8 Receiver

Checks to verify receiver synthesizer lock and sensitivity.

3.9 Exciter

Checks to verify exciter synthesizer lock and output specifications.

3.11 Final Tasks

Tasks to confirm reciter functionality and complete final administration after repair.

4 Reciter Disassembly and Reassembly

5 Reciter Board Replacement

5.1 Replacing the System Interface Board

Procedure for removing and replacing the system interface board.

7 Power Amplifier Circuit Description

8 Power Amplifier Fault Finding

8.1 Safety Precautions

Safety precautions for personal and equipment handling during PA fault finding.

8.3 Test Equipment

List of test equipment required for PA fault finding procedures.

8.5 Board Replacement

Procedures for replacing faulty boards and disposing of old ones.

8.6 Initial Checks

Initial checks for PA power-up, configuration, alarms, and LEDs.

8.8 Control Board

Checks to verify PA power-up, transmission, DC supply voltages, and test points.

8.9 6W Board

Checks for DC supply, voltage levels, driver transistor, and output power on the 6W board.

8.11 60W Board

Checks for DC supply, voltage levels, final transistor, and output power on the 60W board.

8.13 Boost Regulator Board (12V PA Only)

Checks for DC output voltages and Power Saving operation of the boost regulator board.

8.14 Final Tasks

Tasks to confirm PA functionality and complete final administration after repair.

9 Power Amplifier Disassembly and Reassembly

10 Power Amplifier Board Replacement

10.2 Replacing the 6W Board

Procedure for removing and replacing the 6W board, including recalibration.

10.3 Replacing the 60W Board

Procedure for removing and replacing the 60W board and transistor, including recalibration.

10.4 Replacing the 60W RF Power Transistor

Detailed procedure for replacing the 60W RF power transistor, including recalibration.

10.5 Replacing the Control Board

Procedure for replacing the control board, including reprogramming and recalibration.

10.6 Replacing the Low Pass Filter/Directional Coupler Board

Procedure for replacing the LPF/directional coupler board, including recalibration.

10.7 Replacing the Splitter/Combiner Boards

Procedure for removing and replacing splitter/combiner boards.

10.9 Replacing the Boost Regulator Board in a 12V PA

Procedure for replacing the boost regulator board in 12V PA models.

12 Power Management Unit Circuit Description

13 Power Management Unit Fault Finding

13.1 Safety Precautions

Safety precautions for personal and equipment handling during PMU fault finding.

13.3 Test Equipment

List of test equipment required for PMU fault finding procedures.

13.5 Board Replacement

Procedures for replacing PMU cards and boards, and disposing of faulty items.

13.6 Initial Checks

Initial checks for PMU power-up, output voltages, and indicator LEDs.

13.7 Auxiliary Power Supply Board

Procedure for testing the auxiliary power supply board's output voltages.

13.8 DC Module

Fault finding procedures for the DC converter without and with microprocessor control.

13.9 AC Module

Test procedures for verifying the AC converter's operation and component resistance.

14 Power Management Unit Disassembly and Reassembly

14.1 Safety Precautions

Safety precautions for personal and equipment handling during PMU disassembly/reassembly.

15 Power Management Unit Card and Board Replacement

15.1 Safety Precautions

Safety precautions for personal and equipment handling during PMU card replacement.

17 Control Panel Circuit Description

18 Control Panel Servicing

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