Broadcast Electronics AM-2.5E, User Manual

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TABLE OF CONTENTS
PARAGRAPH PAGE NO.
SECTION I POWER SUPPLY THEORY OF OPERATION
1-1 Introduction 1-1
1-3 General Description 1-1
1-6 AC Input 1-1
1-8 Conventional Rectifier Circuitry 1-1
1-10 Soft-Start Circuit 1-1
1-12 AC Line Detection/Synchronization 1-2
1-16 Soft-Start Control Circuit 1-2
1-18 Power Factor Corrector Circuit Board Control Circuit 1-2
1-20 SCR Controlled Rectifier Circuit 1-5
1-23 Filter Circuit 1-5
1-25 Power Supply Enable Circuit 1-5
1-28 Switching Regulator Circuit 1-5
1-30 Low Voltage Power Supply 1-6
1-31 Switching Regulator Control Circuit 1-6
1-33 Switching Regulator Circuit Operation 1-6
1-34 Power Control/Correction Circuit 1-6
1-38 Fault Detection 1-7
1-43 Crowbar Circuit 1-7
1-47 Power Supply Circuit Grounds 1-8
SECTION II POWER SUPPLY CIRCUIT BOARD MAINTENANCE
2-1 Introduction 2-1
2-3 Safety Considerations 2-1
2-6 First Level Maintenance 2-1
2-8 Cleaning and Inspection 2-1
2-10 Second Level Maintenance 2-2
2-12 Troubleshooting 2-2
2-13 Safety Considerations 2-2
2-14 Removing/Installing a Power Supply Circuit Board 2-2
2-17 Troubleshooting Procedures 2-3
2-18 Component Replacement Procedure 2-4
SECTION III POWER SUPPLY CIRCUIT BOARD PARTS LIST
3-1 Introduction 3-1
SECTION IV POWER SUPPLY CIRCUIT BOARD DRAWINGS
4-1 Introduction 4-1
LIST OF ILLUSTRATIONS
FIGURE TITLE PAGE NO.
1-1 POWER SUPPLY CIRCUIT BOARD 1-3
SIMPLIFIED SCHEMATIC
LIST OF TABLES
TABLE TITLE PAGE NO.
2-1 POWER SUPPLY MODULE TROUBLESHOOTING 2-3
3-1 REPLACEABLE PARTS LIST INDEX 3-1