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  Tm-5-6675-238-14
  • Chapter 1 Introduction
  • Signal Processor Unit
  • Figure 1-1. Position And Azimuth Determining System Test Set An/Usm-427
  • Figure 1-1. Position And Azimuth Determining System Test Set An/Usm-427 - Cont
  • Figure 1-1. Position And Azimuth Determining System Test Set An/Usm-427 - Cont
  • Table 1-1. Performance Data
  • Table 1-3. Cable Assemblies
  • Chapter 2 Service Upon Receipt And Installation
  • Figure 2-1. Typical Packaging Diagram
  • Section Iii. Installation Instructions
  • Chapter 2 Service Upon Receipt And Installation
  • Figure 2-1. Typical Packaging Diagram
  • Chapter 3 Operating Instructions
  • Figure 3-1. Signal Processor Unit Controls, Indicators, And Connectors
  • Figure 3-2. Tape Reader, Part No, 877406-1, Controls, Indicators, And Connectors
  • Figure 3-2.1 Tape Reader, Part No. 877406-2, Controls, Indicators, And Connectors
  • Figure 3-3. Buffer Unit Connectors
  • Table 3-1. Pads Test Set Controls, Indicators, And Connectors
  • Table 3-1. Pads Test Set Controls, Indicators, And Connectors - Continued
  • Table 3-1. Pads Test Set Controls, Indicators, And Connectors - Continued
  • Section Iii. Operation Under Unusual Conditions
  • Chapter 6 Functioning Of Equipment
  • Serial Data Bus Loop Closer.
  • Table 6-1. Serial Data Bus Signals
  • Figure 6-1. Serial Data Bus Data Word Utilization
  • Table 6-2. Spu Serial Address Word And Data Word Bit Usage
  • Figure 6-2. Computer Discrete Loop Closer Functional Block Diagram
  • Table 6-3. Input/Output Discrete Signals
  • Table 6-3. Input/Output Discrete Signals - Continued
  • Teletypewriter Control Logic
  • Built-In Test
  • Serial Dirts Bus Loop Closer Self-Test.
  • Digital/Dc Loop Closer Self-Test.
  • Figure 6-3. Signal Procesor Unit Power Supply Functional Block Diagram
  • Figure 6-4. Buffer Unit Functional Block Diagram
  • Figure 6-5. Tape Reader, Functional Block
  • Tape Reader, Part No. 877406-2, Function. A
  • Section Il. Software Description
  • Chapter 8 General Support Maintenance Instructions
  • Wire List Notations
  • Table 8-1. Signal Processor Unit Wire List
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-1. Signal Processor Unit Wire List – Continued
  • Table 8-2. Signal Processor Unit Front Panel Wire List
  • Table 8-2. Signal Processor Unit Front Panel Wire List - Continued
  • Table 8-2. Signal Processor Unit Front Panel Wire List - Continued
  • Table 8-2. Signal Processor Unit Front Panel Wire List - Continued
  • Table 8-3. Cable Assemblies Wire List
  • Table 8-3. Cable Assemblies Wire List - Continued
  • Table 8-3. Cable Assemblies Wire List - Continued
  • Table 8-3. Cable Assemblies WireList-Continued
  • Table 8-3. Cable Assemblies Wire List - Continued
  • Table 8-3. Cable Assemblies Wire List - Continued
  • Table 8-3. Cable Assemblies Wire List - Continued
  • Table 8-3. Cable Assemblies Wire List - Continued
  • Table 8-3. Cable Assemblies Wire List - Continued
  • Table 8-3. Cable Assemblies Wire List - Continued
  • Table 8-3. Cable Assemblies Wire List - Continued
  • Table 8-3. Cable Assemblies Wire List - Continued
  • Table 8-3. Cable Assemblies Wire List - Continued
  • Table 8-3. Cable Assemblies Wire List - Continued
  • Table 8-3. Cable Assemblies Wire List - Continued
  • Table 8-3. Cable Assemblies Wire List - Continued
  • Section Ii. Tools And Equipment
  • Table 8-5. Tools And Equipment Required For General Support Maintenance
  • Section Iii. Troubleshooting
  • Table 8-6. Pads Test Set Self- Test Procedure
  • Table 8-6. Pads Test Set Self- Test Procedure - Continued
  • Table 8-6. Pads Test Set Self-Test Procedure - Continued
  • Table 8-6. Pads Test Set Self-Test Procedure - Continued
  • Table 8-6. Pads Test Set Self-Test Procedure - Continued
  • Table 8-6. Pads Test Set Self-Test Procedure - Continued
  • Table 8-6. Pads Test Set Self-Test Procedure - Continued
  • Table 8-6. Pads Test Set Self-Test Procedure - Continued
  • Table 8-6. Pads Test Set Self-Test Procedure - Continued
  • Table 8-6. Pads Test Set Self-Test Procedure - Continued
  • Table 8-6.1. Pads Test Set Self-Test Procedure Using Tape Reader, Part No. 877406-2
  • Table 8-6.1. Pads Test Set Self-Test Procedure Using Tape Reader, Part No. 877406-2 - Continued
  • Table 8-6.1. Pads Test Set Self-Test Procedure Using Tape Reader, Part No. 877406-2 - Continued
  • Table 8-6.1. Pads Test Set Self-Test Procedure Using Tape Reader, Part No. 877406-2 - Continued
  • Table 8-6.1. Pads Test Set Self-Test Procedure Using Tape Reader, Part No. 877406-2 - Continued
  • Table 8-6.1. Pads Test Set Self-Test Procedure Using Tape Reader, Part No. 877406-2 - Continued
  • Table 8-6.1. Pads Test Set Self-Test Procedure Using Tape Reader, Part No. 877406-2 - Continued
  • Table 8-6.1. Pads Test Set Self-Test Procedure Using Tape Reader, Part No. 877406-2 - Continued
  • Table 8-6.1. Pads Test Set Self-Test Procedure Using Tape Reader, Part No. 877406-2 - Continued
  • Table 8-6.1. Pads Test Set Self-Test Procedure Using Tape Reader, Part No. 877406-2 - Continued
  • Table 8-6.1. Pads Test Set Self-Test Procedure Using Tape Reader, Part No. 877406-2 - Continued
  • Table 8-6.1. Pads Test Set Self-Test Procedure Using Tape Reader, Part No. 877406-2 - Continued
  • Figure 8-1. Signal Processor Unit Parts Location Diagram
  • Figure 8-1. Signal Processor Unit Parts Location Diagram - Cont
  • Figure 8-1. Signal Processor Unit Parts Location Diagram - Cont
  • Figure 8-1. Signal Processor Unit Parts Location Diagram - Cont
  • Figure 8-1. Signal Processor Unit Parts Location Diagram - Cont
  • Figure 8-2. Pads Test Set Self-Test Interconnection Diagram
  • Table 8-7. Failure/Action Indicator Number Definition
  • Table 8-7. Failure/Action Indicator Number Definition - Continued
  • Tape Reader Testing And Troubleshooting Procedure
  • Procedure (Tape Reader, Part No. 877406-2)
  • Table 8-8. Tape Reader Testing And Troubleshooting Procedure
  • Table 8-8. Tape Reader Testing And Troubleshooting Procedure-Continued
  • Table 8-8. Tape Reader Testing And Troubleshooting Procedure-Continued
  • Table 8-8. Tape Reader Testing And Troubleshooting Procedure-Continued
  • Table 8-8. Tape Reader Testing And Troubleshooting Procedure-Continued
  • Table 8-8. Tape Reader Testing And Troubleshooting Procedure-Continued
  • Table 8-8. Tape Reader Testing And Troubleshooting Procedure-Continued
  • Table 8-8. Tape Reader Testing And Troubleshooting Procedure-Continued
  • Table 8-8. Tape Reader Testing And Troubleshooting Procedure-Continued
  • Table 8-8. Tape Reader Testing And Troubleshooting Procedure-Continued
  • Table 8-8. Tape Reader Testing And Troubleshooting Procedure-Continued
  • Table 8-8. Tape Reader Testing And Troubleshooting Procedure-Continued
  • Table 8-8. Tape Reader Testing And Troubleshooting Procedure-Continued
  • Figure 8-3. Tape Reader, Part No. 877406-1, Test Point Locations
  • Figure 8-3. Tape Reader, Part No. 877406-1, Test Point Locations - Cont
  • Figure 8-4. Tape Reader, Part No. 877406-1, Plug-In Circuit Card Adjustments
  • Figure 8-5. Tape Reader, Part No. 877406-1, Waveforms
  • Table 8-8.1. Tape Reader Testing And Troubleshooting Procedure For Tape Reader Part No. 877406-2
  • Table 8-8.1. Tape Reader Testing And Troubleshooting Procedure For Tape Reader Part No. 877406-2- Continued
  • Figure 8-5.2. Tape Reader, Part No. 877406-2, Servo Module Adjustments
  • Section Iv. Maintenance Of Pads Test Set
  • Figure 8-6. Signal Processor Unit Exploded View
  • Figure 8-6. Signal Processor Unit Exploded View - Cont
  • Figure 8-6. Signal Processor Unit Exploded View - Cont
  • Figure 8-6. Signal Processor Unit Exploded View - Cont
  • Legend For Figure 8-6
  • Panel Assembly Removal And Replacement.
  • Panel Component Removal And Replacement.
  • Time Totalizing Meter M1
  • Suppression Resistor Rt1, Rt2, Rt3, Or Rt4
  • Logic No. 2 Electronic Component Assembly A2 Removal And Replacement
  • Power Supply Component Removal And Replacement
  • Figure 8-7. Signal Processor Unit Power Supply Voltage-Adjustment Locations Diagram
  • Figure 8-8. Logic No. 2 Electronic Component Assembly A2 Adjustment Locations Diagram
  • Overvoltage Protector Z1, Z2, Z3, Or Z4
  • Figure 8-9. Power Supply Test-Jack Locations
  • Overvoltage Protectors Z3 And Z4 Voltage Adjustment.
  • Amp Assembly Ds1 Removal And Replacement
  • Figure 8-10. Tape Reader, Part No. 877406-1, Exploded View
  • Figure 8-10. Tape Reader, Part No. 877406-1, Exploded View - Cont
  • Legend For Figure 8-10
  • Servo Feedback Potentiometer R2 Or R3 Removal And Replacement
  • Supply Reel Motor B2
  • Capacitor C1 Or C2 Removal And Replacement
  • Terminal Board Tb2 Removal And Replacement
  • Fuseholder Xf1 Or Xf2 Removal And Replacement
  • Figure 8-10.1. Tape Reader, Part No. 877406-2, Exploded View
  • Figure 8-10.1. Tape Reader, Part No. 877406-2, Exploded View - Cont
  • Legend For Figure 8-10.1
  • Servo Board A3 Removal And Replacement.
  • Replacement.
  • Fuseholder Xf1 Or Xf2 Removal And Replacement
  • Tape Reader, Part No. 877406-2, Head Cleaning.
  • Self-Test, Operational
  • Straight Backshell Disassembly
  • Figure 8-11. Backshell Strap Wrench
  • Figure 8-12. Straight Backshell Disassembly/Assembly
  • Figure 8-13. Right Angle Backshell Disassembly/Assembly
  • Pin Removal/Insertion.
  • Table 8-9. Cable And Connector Tooling And Contact Identification
  • Figure 8-14. Contact Pins And Insertion And Removal Tools
  • Figure 8-16. Contact Pin Insertion Tool Loading
  • Figure 8-17. Crimping Tool Ms3198-1 With Positioner Ms3198-6p
  • Figure 8-18. Crimping Tool Ms3191-4 With Positioner Ms3191-9t
  • Figure 8-20. Crimping Tool My28-4
  • Figure 8-21. Terminal Lug And Wire Preparation
  • Chapter 9 Materiel Used In Conjunction With Major Item
  • Appendix A References
  • Appendix A References - Cont
  • Appendix B Components Of End Item List
  • Section Ii. Integral Components Of End Item
  • Section Ii. Integral Components Of End Item - Continued
  • Section Ii. Integral Components Of End Item - Continued
  • Section Iii. Basic Issue Items
  • Appendix C Additional Authorization List
  • Appendix D Maintenance Allocation Chart
  • Tools And Test Equipment Requirements, Section Iii.
  • Section Ii. Maintenance Allocation Chart
  • Section Ii. Maintenance Allocation Chart - Continued
  • Section Ii. Maintenance Allocation Chart - Continued
  • Section Ii. Maintenance Allocation Chart - Continued
  • Section Ill. Tools And Test Equipment Requirements
  • Section Iii. Tools And Test Equipment Requirements - Continued
  • Appendix E Repair Parts And Special Tools List
  • Appendix F Expendable Supplies And Materials List
  • Glossary
  • Index
  • Index – Continued
  • Index – Continued
  • Index – Continued
  • Index – Continued
  • Index – Continued
  • Index – Continued
  • Index – Continued
  • Index – Continued
  • Fo-1. Pads Test Set Block Diagram
  • Fo-2. Serial Data Bus Control Logic Functional Block Diagram
  • Fo-3. Serial Data Bus Loop Closer Functional Block Diagram
  • Fo-4. Loop Closer Functional Block Diagram
  • Fo-5. Digital/Dc Loop Closer Functional Block Diagram
  • Fo-6. Digital/Resolver And Digital/Synchro Loop Closer Functional Block Diagram
  • Fo-7. Fail Discrete Status And On/Off-Enter Logic Functional Block Diagram
  • Fo-8. Memory Load And Verify Functional Block Diagram
  • Fo–9. Teletypewriter Control Logic Functional Block Control Logic Functional Diagram
  • Fo-10. Tape Reader Control Logic Self-Test Functional Block Diagram
  • Fo-11.Loop Closer Self-Test Functional Block Diagram
  • Fo-12. Serial Data Bus Loop Closer Self- Test Functional Block Diagram
  • Fo-13. Teletypewriter Control Logic Self-Test Functional Block Diagram
  • Fo-14. Digital Resolver And Digital Synchro Loop Closer And Self Test Functional Block Diagram
  • Fo-15. Digital/Dc Loop Closer Self-Test Functional Block Diagram
  • Fo-16. Computer Discrete Loop Closer Self- Test Functional Block Diagram
  • Figure Fo-16.1. Tape Reader, Part No. 877406-2, Functional Block Diagram
  • Fo-17. Pads Test Set Self-Test Flow Chart
  • Fo-17. Pads Test Set Self-Test Flow Chart - Cont
  • Fo-18. Signal Processor Unit Schematic Diagram
  • Fo-18. Signal Processor Unit Schematic Diagram - Cont
  • Fo-18. Signal Processor Unit Schematic Diagram - Cont
  • Fo-19. Tape Reader Schematic Diagram
  • Fo-19. Tape Reader Schematic Diagram - Cont
  • Figure Fo19-1. Tape Reader, Schematic Diagram
  • Figure Fo19-1. Tape Reader, Schematic Diagram - Cont
  • Figuree Fo-20. Tape Reader,Schematic Diagram

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