1. Manuals
  2. Brands
  3. Broadcast Electronics Manuals
  4. Power Supply
  5. AM-10A
  6. Manual

Broadcast Electronics AM-10A Manual

Hide thumbs Also See for AM-10A:
Table of Contents

Advertisement

Quick Links

SECTION II
SECTION III
SECTION IV
FIGURE
TABLE

TABLE OF CONTENTS

TITLE
LIST OF TABLES
TITLE
PAGE NO.

Advertisement

Table of Contents
loading

Related Manuals for Broadcast Electronics AM-10A

Summary of Contents for Broadcast Electronics AM-10A

  • Page 1: Table Of Contents

    TABLE OF CONTENTS PARAGRAPH PAGE NO. SECTION I POWER SUPPLY THEORY OF OPERATION SECTION II POWER SUPPLY CIRCUIT BOARD MAINTENANCE SECTION III POWER SUPPLY CIRCUIT BOARD PARTS LIST SECTION IV POWER SUPPLY CIRCUIT BOARD DRAWINGS LIST OF ILLUSTRATIONS FIGURE TITLE PAGE NO.

  • Page 2: Power Supply Theory Of Operation

    SECTION I POWER SUPPLY THEORY OF OPERATION INTRODUCTION. GENERAL DESCRIPTION. AC INPUT. CONVENTIONAL RECTIFIER CIRCUITRY. SOFT-START CIRCUIT.
  • Page 3 AC LINE DETECTION/SYNCHRONIZATION. SOFT-START CONTROL CIRCUIT. POWER FACTOR CORRECTOR CIRCUIT BOARD CONTROL CIRCUIT.
  • Page 5 SCR CONTROLLED RECTIFIER CIRCUIT. FILTER CIRCUIT. POWER SUPPLY ENABLE CIRCUIT. SWITCHING REGULATOR CIRCUIT.
  • Page 6 LOW VOLTAGE POWER SUPPLY. SWITCHING REGULATOR CONTROL CIRCUIT. SWITCHING REGULATOR CIRCUIT OPERATION. POWER CONTROL/CORRECTION CIRCUIT.
  • Page 7 FAULT DETECTION. CROWBAR CIRCUIT.
  • Page 8 POWER SUPPLY CIRCUIT GROUNDS.

  • Page 9: Power Supply Circuit Board Maintenance

    SECTION II POWER SUPPLY CIRCUIT BOARD MAINTENANCE INTRODUCTION. SAFETY CONSIDERATIONS. WARNING THE TRANSMITTER CONTAINS MULTIPLE CIRCUIT GROUNDS WITH HIGH AC AND DC POTENTIALS WITH RESPECT TO THE CABINET WHICH IS AT WARNING EARTH POTENTIAL. DO NOT ENERGIZE THE WARNING TRANSMITTER WITH TEST EQUIPMENT CON NECTED TO THE TRANSMITTER OUTPUT WARNING NETWORK, RF POWER MODULE, RF COMBINER, OR...
  • Page 10 WARNING DISCONNECT ALL TRANSMITTER PRIMARY POWER BEFORE PROCEEDING. WARNING SECOND LEVEL MAINTENANCE. TROUBLESHOOTING. WARNING THE TRANSMITTER CONTAINS MULTIPLE CIRCUIT GROUNDS WITH HIGH AC AND DC POTENTIALS WITH RESPECT TO THE CABINET WHICH IS AT WARNING EARTH POTENTIAL. DO NOT ENERGIZE THE WARNING TRANSMITTER WITH TEST EQUIPMENT CON NECTED TO THE TRANSMITTER OUTPUT...
  • Page 11 TROUBLESHOOTING PROCEDURES. TABLE 2-1. POWER SUPPLY MODULE TROUBLESHOOTING (Sheet 1 of 2) SYMPTOM CIRCUITRY TO CHECK...
  • Page 12 TABLE 2-1. POWER SUPPLY MODULE TROUBLESHOOTING (Sheet 2 of 2) SYMPTOM CIRCUITRY TO CHECK COMPONENT REPLACEMENT PROCEDURE.

  • Page 13: Power Supply Circuit Board Parts List

    SECTION III POWER SUPPLY CIRCUIT BOARD PARTS LIST INTRODUCTION. TABLE 3-1. REPLACEABLE PARTS LIST INDEX TABLE DESCRIPTION PART NO. PAGE...
  • Page 14 TABLE 3-2. POWER SUPPLY PANEL ASSEMBLY - 957-0315 REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-3. POWER SUPPLY CIRCUIT BOARD ASSEMBLY - 917-0315-001 (Sheet 1 of 8) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ±...
  • Page 15 TABLE 3-3. POWER SUPPLY CIRCUIT BOARD ASSEMBLY - 917-0315-001 (Sheet 2 of 8) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 16 TABLE 3-3. POWER SUPPLY CIRCUIT BOARD ASSEMBLY - 917-0315-001 (Sheet 3 of 8) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ±...
  • Page 17 TABLE 3-3. POWER SUPPLY CIRCUIT BOARD ASSEMBLY - 917-0315-001 (Sheet 4 of 8) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 18 TABLE 3-3. POWER SUPPLY CIRCUIT BOARD ASSEMBLY - 917-0315-001 (Sheet 5 of 8) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 19 TABLE 3-3. POWER SUPPLY CIRCUIT BOARD ASSEMBLY - 917-0315-001 (Sheet 6 of 8) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 20 TABLE 3-3. POWER SUPPLY CIRCUIT BOARD ASSEMBLY - 917-0315-001 (Sheet 7 of 8) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ±...
  • Page 21 TABLE 3-3. POWER SUPPLY CIRCUIT BOARD ASSEMBLY - 917-0315-001 (Sheet 8 of 8) REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-4. POWER SUPPLY PANEL HARNESS - 947-0189 REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-5. POWER SUPPLY CAPACITOR CIRCUIT BOARD ASSEMBLY - 917-0315-004 REF.

  • Page 22: Power Supply Circuit Board Drawings

    SECTION IV POWER SUPPLY CIRCUIT BOARD DRAWINGS INTRODUCTION. FIGURE TITLE NUMBER 4–1...

  • Page 23: List Of Illustrations

    TABLE OF CONTENTS PARAGRAPH PAGE NO. SECTION I RF POWER MODULE THEORY OF OPERATION SECTION II RF POWER MODULE MAINTENANCE SECTION III RF POWER MODULE PARTS LIST SECTION IV RF POWER MODULE DRAWINGS LIST OF ILLUSTRATIONS FIGURE TITLE PAGE NO. LIST OF TABLES TABLE TITLE...
  • Page 24 SECTION I RF POWER MODULE THEORY OF OPERATION INTRODUCTION. GENERAL DESCRIPTION. MODULATOR CIRCUIT BOARD. MODULATOR CIRCUIT. FAULT DETECTION CIRCUITS.
  • Page 25 PWM Drive Fault Detector. Modulator Fault Detector. B+ Supply Fuse Fault Detector. B+ Power Supply Fault Detector. Modulator Status Circuit. POWER SUPPLY.
  • Page 27 RF AMPLIFIER CIRCUIT BOARD. PRE-DRIVER CIRCUIT. DRIVER CIRCUIT. RF AMPLIFIER CIRCUIT.
  • Page 28 RF DRIVE STATUS CIRCUIT. FAULT DETECTOR CIRCUIT. POWER SUPPLY CIRCUIT.
  • Page 30 SECTION II RF POWER MODULE MAINTENANCE INTRODUCTION. SAFETY CONSIDERATIONS. WARNING THE TRANSMITTER CONTAINS MULTIPLE CIRCUIT GROUNDS WITH HIGH AC AND DC POTENTIALS WITH RESPECT TO THE CABINET WHICH IS AT WARNING EARTH POTENTIAL. DO NOT ENERGIZE THE WARNING TRANSMITTER WITH TEST EQUIPMENT CON NECTED TO THE TRANSMITTER OUTPUT WARNING NETWORK, RF POWER MODULE, RF COMBINER, OR...
  • Page 31 WARNING DISCONNECT ALL TRANSMITTER PRIMARY POWER BEFORE ATTEMPTING ANY EQUIPMENT MAINTE WARNING NANCE. CAUTION REMOVING OR INSTALLING AN RF POWER MODULE WITH THE TRANSMITTER ENERGIZED MAY RESULT CAUTION IN DAMAGE TO THE MODULE. DO NOT REMOVE THE RF POWER MODULES WITH THE TRANSMITTER EN ERGIZED.
  • Page 32 RF POWER MODULE ASSEMBLY PROCEDURE. RF POWER MODULE EXCHANGE PROGRAM. TROUBLESHOOTING PROCEDURES. COMPONENT REPLACEMENT PROCEDURE.
  • Page 33 TABLE 2-1. RF POWER MODULE TROUBLESHOOTING (Sheet 1 of 3) SYMPTOM CIRCUITRY TO CHECK ±...
  • Page 34 TABLE 2-1. RF POWER MODULE TROUBLESHOOTING (Sheet 2 of 3) SYMPTOM CIRCUITRY TO CHECK ± ±...
  • Page 35 TABLE 2-1. RF POWER MODULE TROUBLESHOOTING (Sheet 3 of 3) SYMPTOM CIRCUITRY TO CHECK...
  • Page 36 SECTION III RF POWER MODULE PARTS LIST INTRODUCTION. TABLE 3-1. REPLACEABLE PARTS LIST INDEX TABLE DESCRIPTION PART NO. PAGE...
  • Page 37 TABLE 3-2. POWER MODULE ASSEMBLY - 957-0010-001 REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-3. MODULATOR CIRCUIT BOARD ASSEMBLY - 917-0302 (Sheet 1 of 4) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ±...
  • Page 38 TABLE 3-3. MODULATOR CIRCUIT BOARD ASSEMBLY 917-0302 (Sheet 2 of 4) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 39 TABLE 3-3. MODULATOR CIRCUIT BOARD ASSEMBLY 917-0302 (Sheet 3 of 4) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 40 TABLE 3-3. MODULATOR CIRCUIT BOARD ASSEMBLY 917-0302 (Sheet 4 of 4) REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-4. POWER AMPLIFIER CIRCUIT BOARD ASSEMBLY - 917-0304 (Sheet 1 of 3) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ±...
  • Page 41 TABLE 3-4. POWER AMPLIFIER CIRCUIT BOARD ASSEMBLY - 917-0304 (Sheet 2 of 3) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ±...
  • Page 42 TABLE 3-4. POWER AMPLIFIER CIRCUIT BOARD ASSEMBLY - 917-0304 (Sheet 3 of 3) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 43 TABLE 3-5. POWER MODULE FREQUENCY DEPENDANT KIT, 522 - 650 KHZ - 957-1015-001 REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-6. POWER MODULE FREQUENCY DEPENDANT KIT, 651 - 770 KHZ - 957-1015-002 REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-7. POWER MODULE FREQUENCY DEPENDANT KIT, 771 - 920 KHZ - 957-1015-003 REF.
  • Page 44 TABLE 3-9. POWER MODULE FREQUENCY DEPENDANT KIT, 1081 - 1300 KHZ - 957-1015-005 REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-10. POWER MODULE FREQUENCY DEPENDANT KIT, 1301 - 1580 KHZ - 957-1015-006 REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-11. POWER MODULE FREQUENCY DEPENDANT KIT, 1581 - 1700 KHZ - 957-1015-007 REF.
  • Page 45 SECTION IV RF POWER MODULE DRAWINGS INTRODUCTION. FIGURE TITLE NUMBER 4–1...

  • Page 46: Paragraph Section I

    TABLE OF CONTENTS PARAGRAPH PAGE NO. SECTION I OUTPUT NETWORK THEORY OF OPERATION SECTION II OUTPUT NETWORK MAINTENANCE SECTION III OUTPUT NETWORK ASSSEMBLY PARTS LIST SECTION IV OUTPUT NETWORK ASSEMBLY DRAWINGS LIST OF TABLES TABLE TITLE PAGE NO.

  • Page 47: Section I

    SECTION I OUTPUT NETWORK THEORY OF OPERATION INTRODUCTION. FUNCTIONAL DESCRIPTION.

  • Page 48: Output Network Maintenance

    SECTION II OUTPUT NETWORK MAINTENANCE INTRODUCTION. SAFETY CONSIDERATIONS. WARNING THE TRANSMITTER CONTAINS MULTIPLE CIRCUIT GROUNDS WITH HIGH AC AND DC POTENTIALS WITH RESPECT TO THE CABINET WHICH IS AT WARNING EARTH POTENTIAL. DO NOT ENERGIZE THE WARNING TRANSMITTER WITH TEST EQUIPMENT CON NECTED TO THE TRANSMITTER OUTPUT WARNING NETWORK, RF POWER MODULE, RF COMBINER, OR...
  • Page 49 WARNING DISCONNECT ALL TRANSMITTER PRIMARY POWER BEFORE ATTEMPTING ANY EQUIPMENT MAINTE WARNING NANCE. SECOND LEVEL MAINTENANCE. ELECTRICAL ADJUSTMENTS. MODULATION CALIBRATION CONTROLS. DIRECTIONAL COUPLER NULL CONTROLS. TROUBLESHOOTING. WARNING THE TRANSMITTER CONTAINS MULTIPLE CIRCUIT GROUNDS WITH HIGH AC AND DC POTENTIALS WITH RESPECT TO THE CABINET WHICH IS AT WARNING EARTH POTENTIAL.
  • Page 50 TROUBLESHOOTING PROCEDURES. TABLE 2-1. DIRECTIONAL COUPLER CIRCUIT BOARD TROUBLESHOOTING SYMPTOM CIRCUITRY TO CHECK TABLE 2-2. LIGHTNING DETECTION CIRCUIT BOARD/SPARK GAP TROUBLESHOOT SYMPTOM CIRCUITRY TO CHECK TABLE 2-3. LIGHTNING PROTECTION CIRCUIT BOARD TROUBLESHOOTING SYMPTOM CIRCUITRY TO CHECK COMPONENT REPLACEMENT PROCEDURE.

  • Page 51: Output Network Asssembly Parts List

    SECTION III OUTPUT NETWORK ASSEMBLY PARTS LIST INTRODUCTION. TABLE 3-1. REPLACEABLE PARTS LIST INDEX (Sheet 1 of 2) TABLE DESCRIPTION PART NO. PAGE...
  • Page 52 TABLE 3-1. REPLACEABLE PARTS LIST INDEX (Sheet 2 of 2) TABLE DESCRIPTION PART NO. PAGE...
  • Page 53 TABLE 3-2. OUTPUT NETWORK ASSEMBLY, AM-10A/AM-6A - 957-0030/957-0032 REF. DES. DESCRIPTION PART NO. QTY. FOR 957-0030 ASSEMBLY, AM-10A FOR 957-0032 ASSEMBLY, AM-6A TABLE 3-3. LIGHTNING PROTECTION CIRCUIT BOARD, AM-6A, AM-10A - 917-0216-001/-002 REF. DES. DESCRIPTION PART NO. QTY. FOR 957-0216-001 ASSEMBLY, AM-6A FOR 957-0216-002 ASSEMBLY, AM-10A TABLE 3-4.
  • Page 54 TABLE 3-5. DIRECTIONAL COUPLER CIRCUIT BOARD ASSEMBLY - 917-0306-002 (Sheet 1 of 2) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 55 DESCRIPTION PART NO. QTY. TABLE 3-6. LIGHTNING DETECTION CIRCUIT BOARD ASSEMBLY - 917-0306-004 REF. DES. DESCRIPTION PART NO. QTY. ± TABLE 3-7. OUTPUT NETWORK FREQUENCY DEPENDANT PARTS, 522 - 650 KHZ, AM-10A - 957-1035-101 REF. DES. DESCRIPTION PART NO. QTY.
  • Page 56 AM-6A - 957-1035-061 REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-9. OUTPUT NETWORK FREQUENCY DEPENDANT PARTS, 651 - 770 KHZ, AM-10A - 957-1035-102 REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-10. OUTPUT NETWORK FREQUENCY DEPENDANT PARTS, 651 - 770 KHZ, AM-6A - 957-1035-062 (Sheet 1 of 2) REF.
  • Page 57 AM-6A - 957-1035-062 (Sheet 2 of 2) REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-11. OUTPUT NETWORK FREQUENCY DEPENDANT PARTS, 771 - 920 KHZ, AM-10A - 957-1035-103 REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-12. OUTPUT NETWORK FREQUENCY DEPENDANT PARTS, 771 - 920 KHZ, AM-6A - 957-1035-063 REF.
  • Page 58 TABLE 3-14. OUTPUT NETWORK FREQUENCY DEPENDANT PARTS, 921 - 1080 KHZ, AM-6A - 957-1035-064 REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-15. OUTPUT NETWORK FREQUENCY DEPENDANT PARTS, 1081 - 1300 KHZ, AM-10A - 957-1035-105 (Sheet 1 of 2) REF. DES. DESCRIPTION PART NO. QTY.
  • Page 59 TABLE 3-15. OUTPUT NETWORK FREQUENCY DEPENDANT PARTS, 1081 - 1300 KHZ, AM-10A - 957-1035-105 (Sheet 2 of 2) REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-16. OUTPUT NETWORK FREQUENCY DEPENDANT PARTS, 1081 - 1300 KHZ, AM-6A - 957-1035-065 REF. DES.
  • Page 60 AM-6A - 957-1035-066 REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-19. OUTPUT NETWORK FREQUENCY DEPENDANT PARTS, 1581 - 1700 KHZ, AM-10A - 957-1035-107 REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-20. OUTPUT NETWORK FREQUENCY DEPENDANT PARTS, 1581 - 1700 KHZ, AM-6A - 957-1035-067 (Sheet 1 of 2) REF.
  • Page 61 TABLE 3-20. OUTPUT NETWORK FREQUENCY DEPENDANT PARTS, 1581 - 1700 KHZ, AM-6A - 957-1035-067 (Sheet 2 of 2) REF. DES. DESCRIPTION PART NO. QTY.

  • Page 62: Output Network Assembly Drawings

    SECTION IV OUTPUT NETWORK ASSEMBLY DRAWINGS INTRODUCTION. FIGURE TITLE NUMBER 4–1...
  • Page 63 TABLE OF CONTENTS PARAGRAPH PAGE NO. SECTION I ECU THEORY OF OPERATION...
  • Page 64 PARAGRAPH PAGE NO. SECTION II TRANSMITTER ECU MAINTENANCE...

  • Page 65: Page No

    PARAGRAPH PAGE NO. SECTION III ECU ASSEMBLY PARTS LIST SECTION IV ECU ASSEMBLY DRAWINGS LIST OF ILLUSTRATIONS FIGURE TITLE PAGE NO. LIST OF TABLES TABLE TITLE PAGE NO.
  • Page 66 SECTION I ECU THEORY OF OPERATION INTRODUCTION. GENERAL DESCRIPTION. FUNCTIONAL DESCRIPTION. ECU DISPLAY CIRCUIT BOARD. EXCITER MONITOR MODE CONTROL CIRCUIT.
  • Page 67 AUTORANGE CIRCUIT. POLARITY CONTROL CIRCUIT. HALF-WAVE RECTIFIER CIRCUIT. METER CIRCUITRY. INDICATOR CIRCUITRY. RESET SWITCH. ECU SWITCH CIRCUIT BOARD.
  • Page 68 ECU METER SWITCH CIRCUIT BOARD. MOTHERBOARD. CONTROLLER CIRCUIT BOARD. CABINET/EXTERNAL INTERLOCK AND REMOTE CONTROL FAIL-SAFE. External Interlock.
  • Page 69 Remote Control Fail-safe. EXTERNAL MUTE. ANTENNA INTERLOCK.
  • Page 72 REMOTE CONTROL. POWER ON.
  • Page 73 POWER CONTROL CIRCUIT.
  • Page 74 Power Control Driver Circuit. POWER CONTROL TRIM CIRCUIT. Trim Reset. TRANSMITTER OFF.
  • Page 75 AC POWER INTERRUPTIONS. FORWARD AND REFLECTED POWER CIRCUITRY.
  • Page 76 FOLDBACK PROTECTION. ANTENNA STATUS INDICATOR CONDITION High Forward Power Circuitry...
  • Page 77 High Reflected Power Circuitry. Over-temperature Circuitry.
  • Page 78 Reflected Power Emergency. Lightning Conditions. Foldback Indication.
  • Page 79 ATTACK SIGNAL OPERATION. 1.2 : 1 VSWR CONDITIONS. FOLDBACK RECOVERY. High Reflected Power Recovery. High Forward Power Recovery.
  • Page 80 High Reflected Power Release Signal. Over-Temperature Recovery. Reflected Power Emergency/Lightning Recovery. EXCITER MONITORING.
  • Page 81 POWER SUPPLY MONITORING. Power Supply Fault. Power Supply Emergency Condition. Power Supply Maintenance Condition. RF POWER MODULE MONITORING. RF Power Module Fault. RF Power Module Maintenance Condition.
  • Page 82 FAULT CIRCUIT. OSCILLATOR CIRCUIT. OVER-CYCLE OFF CIRCUIT. POWER SUPPLY CIRCUIT. ±...
  • Page 83 EXCITER CIRCUIT BOARD. LEFT/RIGHT CHANNEL INPUT CIRCUIT.
  • Page 84 MONO MODE SWITCHING. 24 uS DELAY CIRCUIT. NEGATIVE LIMITER. IPM CORRECTION CIRCUIT. PWM CIRCUIT.
  • Page 85 PWM DRIVER CIRCUIT. FREQUENCY SYNTHESIZER. PWM REFERENCE CIRCUIT.
  • Page 87 LOCK DETECTOR CIRCUIT. ± STEREO DETECTION CIRCUIT. IPM WAVE SHAPE CIRCUIT. PHASE MODULATOR CIRCUIT.
  • Page 88 RF DRIVE CIRCUIT. EXCITER FAILURE DETECTOR CIRCUIT. POWER SUPPLY CIRCUITS. STEREO CIRCUIT BOARD. EQUALIZATION CIRCUITRY.
  • Page 90 8 MICROSECOND DELAY CIRCUIT. 4 MICROSECOND DELAY CIRCUIT. ALL-PASS FILTER. EQUALIZATION SELECTION CIRCUIT. L+R AND L-R MATRIX CIRCUIT.
  • Page 91 PHASE MODULATOR CIRCUIT.
  • Page 92 BAND-PASS FILTER. TRANSISTOR AMPLIFIER CIRCUIT. AMPLITUDE LIMITER CIRCUIT. OUTPUT NETWORK. OPERATING MODE SELECTION AND INDICATION CIRCUIT.
  • Page 93 EQUALIZATION SELECTION. PILOT SIGNAL. POWER SUPPLY FILTER NETWORK. ± ECU POWER SUPPLY ASSEMBLY.
  • Page 95 SECTION II TRANSMITTER ECU MAINTENANCE INTRODUCTION. SAFETY CONSIDERATIONS. WARNING THE TRANSMITTER CONTAINS MULTIPLE CIRCUIT GROUNDS WITH HIGH AC AND DC POTENTIALS WITH RESPECT TO THE CABINET WHICH IS AT WARNING EARTH POTENTIAL. DO NOT ENERGIZE THE WARNING TRANSMITTER WITH TEST EQUIPMENT CON NECTED TO THE TRANSMITTER OUTPUT WARNING NETWORK, RF POWER MODULE, RF COMBINER, OR...
  • Page 96 THE TRANSMITTER MAY BE DAMAGED IF THE ECU CAUTION CIRCUIT BOARDS ARE NOT SECURELY SEATED INTO CAUTION THE CONNECTORS. FIRST LEVEL MAINTENANCE. CLEANING AND INSPECTION. WARNING NEVER OPEN THE EQUIPMENT UNLESS ALL TRANS MITTER PRIMARY POWER IS DISCONNECTED. EN SURE ALL TRANSMITTER PRIMARY POWER IS DIS WARNING CONNECTED BEFORE ATTEMPTING MAINTENANCE ON ANY AREA WITHIN THE TRANSMITTER.
  • Page 97 ECU EXTENDER CIRCUIT BOARD OPERATION. CONTROLLER CIRCUIT BOARD ADJUSTMENTS. P1 SET - P5 SET CONTROLS. FWD AND RFL CALIBRATIONS. ECU METER SWITCH CIRCUIT BOARD ADJUSTMENTS. FORWARD POWER METER LOW AND HIGH SCALE CALIBRATIONS. REFLECTED POWER METER LOW AND HIGH SCALE CALIBRATIONS.
  • Page 98 FWD AND RFL CALIBRATIONS. STEREO CIRCUIT BOARD ADJUSTMENTS. STEREO ADJUSTMENT. EXCITER CIRCUIT BOARD ADJUSTMENTS. MODULATION CALIBRATION. PHASE MODULATOR CALIBRATION. SYMMETRY CONTROL. IPM CORRECTION CIRCUIT CONTROLS. SINGLE CHAN MONO LEVEL CONTROL. AVERAGE MODULATION LIMIT CONTROL. NEG LIMIT CONTROL.
  • Page 99 Procedure. WARNING DISCONNECT ALL TRANSMITTER PRIMARY POWER BEFORE PROCEEDING. WARNING WARNING DISCONNECT ALL TRANSMITTER PRIMARY POWER BEFORE PROCEEDING. WARNING FREQUENCY CALIBRATION CONTROL. Procedure. WARNING DISCONNECT ALL TRANSMITTER PRIMARY POWER BEFORE PROCEEDING. WARNING...
  • Page 100 WARNING DISCONNECT ALL TRANSMITTER PRIMARY POWER BEFORE PROCEEDING. WARNING DISPLAY CIRCUIT BOARD ADJUSTMENTS. L/L+R AND R/L-R DISPLAY CALIBRATION CONTROL. Procedure. WARNING DISCONNECT ALL TRANSMITTER PRIMARY POWER BEFORE PROCEEDING. WARNING WARNING DISCONNECT ALL TRANSMITTER PRIMARY POWER BEFORE PROCEEDING. WARNING TROUBLESHOOTING. WARNING THE TRANSMITTER CONTAINS MULTIPLE CIRCUIT GROUNDS WITH HIGH AC AND DC POTENTIALS WITH RESPECT TO THE CABINET WHICH IS AT...
  • Page 101 TROUBLESHOOTING PROCEDURES. TABLE 2-1. EXCITER CIRCUIT BOARD TROUBLESHOOTING (Sheet 1 of 3) SYMPTOM CIRCUITRY TO CHECK...
  • Page 102 TABLE 2-1. EXCITER CIRCUIT BOARD TROUBLESHOOTING (Sheet 2 of 3) SYMPTOM CIRCUITRY TO CHECK...
  • Page 103 TABLE 2-1. EXCITER CIRCUIT BOARD TROUBLESHOOTING (Sheet 3 of 3) SYMPTOM CIRCUITRY TO CHECK TABLE 2-2. STEREO CIRCUIT BOARD TROUBLESHOOTING (Sheet 1 of 2) SYMPTOM CIRCUITRY TO CHECK...
  • Page 104 TABLE 2-2. STEREO CIRCUIT BOARD TROUBLESHOOTING (Sheet 2 of 2) SYMPTOM CIRCUITRY TO CHECK TABLE 2-3. CONTROLLER CIRCUIT BOARD TROUBLESHOOTING (Sheet 1 of 2) SYMPTOM CIRCUITRY TO CHECK...
  • Page 105 TABLE 2-3. CONTROLLER CIRCUIT BOARD TROUBLESHOOTING (Sheet 2 of 2) SYMPTOM CIRCUITRY TO CHECK TABLE 2-4. ECU POWER SUPPLY TROUBLESHOOTING SYMPTOM CIRCUITRY TO CHECK COMPONENT REPLACEMENT PROCEDURE.
  • Page 106 SECTION III ECU ASSEMBLY PARTS LIST INTRODUCTION. TABLE 3-1. REPLACEABLE PARTS LIST INDEX TABLE DESCRIPTION PART NO. PAGE...
  • Page 107 TABLE 3-2. EXCITER/CONTROLLER ASSEMBLY - 957-0009-011 REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± TABLE 3-3. ECU EXCITER CIRCUIT BOARD ASSEMBLY - 917-0300 (Sheet 1 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ±...
  • Page 108 TABLE 3-3. ECU EXCITER CIRCUIT BOARD ASSEMBLY - 917-0300 (Sheet 2 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 109 TABLE 3-3. ECU EXCITER CIRCUIT BOARD ASSEMBLY - 917-0300 (Sheet 3 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 110 TABLE 3-3. ECU EXCITER CIRCUIT BOARD ASSEMBLY - 917-0300 (Sheet 4 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ±...
  • Page 111 TABLE 3-3. ECU EXCITER CIRCUIT BOARD ASSEMBLY - 917-0300 (Sheet 5 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 112 TABLE 3-3. ECU EXCITER CIRCUIT BOARD ASSEMBLY - 917-0300 (Sheet 6 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 113 TABLE 3-3. ECU EXCITER CIRCUIT BOARD ASSEMBLY - 917-0300 (Sheet 7 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 114 TABLE 3-3. ECU EXCITER CIRCUIT BOARD ASSEMBLY - 917-0300 (Sheet 8 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ±...
  • Page 115 TABLE 3-3. ECU EXCITER CIRCUIT BOARD ASSEMBLY - 917-0300 (Sheet 9 of 10) REF. DES. DESCRIPTION PART NO. QTY.
  • Page 116 TABLE 3-3. ECU EXCITER CIRCUIT BOARD ASSEMBLY - 917-0300 (Sheet 10 of 10) REF. DES. DESCRIPTION PART NO. QTY. 10 kHz SPACING 9 kHz SPACING TABLE 3-4. VCO MODULE CIRCUIT BOARD ASSEMBLY - 917-0069 REF. DES. DESCRIPTION PART NO. QTY. ±...
  • Page 117 TABLE 3-5. ECU MOTHERBOARD CIRCUIT BOARD ASSEMBLY - 917-0301 (Sheet 2 of 3) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 118 TABLE 3-5. ECU MOTHERBOARD CIRCUIT BOARD ASSEMBLY - 917-0301 (Sheet 3 of 3) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± TABLE 3-6. ECU CONTROLLER CIRCUIT BOARD ASSEMBLY - 917-0205 (Sheet 1 of 10) REF.
  • Page 119 TABLE 3-6. ECU CONTROLLER CIRCUIT BOARD ASSEMBLY - 917-0205 (Sheet 2 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 120 TABLE 3-6. ECU CONTROLLER CIRCUIT BOARD ASSEMBLY - 917-0205 (Sheet 3 of 10) REF. DES. DESCRIPTION PART NO. QTY.
  • Page 121 TABLE 3-6. ECU CONTROLLER CIRCUIT BOARD ASSEMBLY - 917-0205 (Sheet 4 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 122 TABLE 3-6. ECU CONTROLLER CIRCUIT BOARD ASSEMBLY - 917-0205 (Sheet 5 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 123 TABLE 3-6. ECU CONTROLLER CIRCUIT BOARD ASSEMBLY - 917-0205 (Sheet 6 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 124 TABLE 3-6. ECU CONTROLLER CIRCUIT BOARD ASSEMBLY - 917-0205 (Sheet 7 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 125 TABLE 3-6. ECU CONTROLLER CIRCUIT BOARD ASSEMBLY - 917-0205 (Sheet 8 of 10) REF. DES. DESCRIPTION PART NO. QTY. ° ±...
  • Page 126 TABLE 3-6. ECU CONTROLLER CIRCUIT BOARD ASSEMBLY - 917-0205 (Sheet 9 of 10) REF. DES. DESCRIPTION PART NO. QTY.
  • Page 127 TABLE 3-6. ECU CONTROLLER CIRCUIT BOARD ASSEMBLY - 917-0205 (Sheet 10 of 10) REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-7. ECU DISPLAY/CONTROL SWITCH CIRCUIT BOARD ASSEMBLY - 917-0306-001 (Sheet 1 of 4) REF. DES. DESCRIPTION PART NO. QTY. ± ±...
  • Page 128 TABLE 3-7. ECU DISPLAY/CONTROL SWITCH CIRCUIT BOARD - 917-0306-001 (Sheet 2 of 4) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 129 TABLE 3-7. ECU DISPLAY/CONTROL SWITCH CIRCUIT BOARD - 917-0306-001 (Sheet 3 of 4) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 130 TABLE 3-7. ECU DISPLAY/CONTROL SWITCH CIRCUIT BOARD - 917-0306-001 (Sheet 4 of 4) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± TABLE 3-8. METER SWITCH CIRCUIT BOARD ASSEMBLY - 917-0306-005 (Sheet 1 of 2) REF. DES. DESCRIPTION PART NO.
  • Page 131 TABLE 3-8. METER SWITCH CIRCUIT BOARD ASSEMBLY - 917-0306-005 (Sheet 2 of 2) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± TABLE 3-9. ECU EXTENDER CIRCUIT BOARD ASSEMBLY - 917-0208 REF. DES. DESCRIPTION PART NO. QTY.
  • Page 132 TABLE 3-10. STEREO CIRCUIT BOARD ASSEMBLY - 917-0209 (Sheet 2 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 133 TABLE 3-10. STEREO CIRCUIT BOARD ASSEMBLY - 917-0209 (Sheet 3 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 134 TABLE 3-10. STEREO CIRCUIT BOARD ASSEMBLY - 917-0209 (Sheet 4 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 135 TABLE 3-10. STEREO CIRCUIT BOARD ASSEMBLY - 917-0209 (Sheet 5 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 136 TABLE 3-10. STEREO CIRCUIT BOARD ASSEMBLY - 917-0209 (Sheet 6 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 137 TABLE 3-10. STEREO CIRCUIT BOARD ASSEMBLY - 917-0209 (Sheet 7 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 138 TABLE 3-10. STEREO CIRCUIT BOARD ASSEMBLY - 917-0209 (Sheet 8 of 10) REF. DES. DESCRIPTION PART NO. QTY. ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±...
  • Page 139 TABLE 3-10. STEREO CIRCUIT BOARD ASSEMBLY - 917-0209 (Sheet 9 of 10) REF. DES. DESCRIPTION PART NO. QTY.
  • Page 140 TABLE 3-10. STEREO CIRCUIT BOARD ASSEMBLY - 917-0209 (Sheet 10 of 10) REF. DES. DESCRIPTION PART NO. QTY. TABLE 3-11. ECU HARNESS ASSEMBLY - 947-0153 REF. DES. DESCRIPTION PART NO. QTY.
  • Page 141 SECTION IV ECU ASSEMBLY DRAWINGS INTRODUCTION. FIGURE TITLE NUMBER...

This manual is also suitable for:

Am-6a

Table of Contents