TM-11-5820-890-30-4 Ground ICOM Radio Sets: Receiver-Transmitter Radio RT-1523(C)/U (NSN 5895-01-234-8093) Manual

CHAPTER 1 INTRODUCTION
1-2. CONSOLIDATED Refer to the latest issue of INDEX OF ARMY PUBLICATIONS  AND BLANK FORMS
1-7. NOMENCLATURE CROSS-REFERENCE LIST. Cont
1-10. EQUIPMENT DATA
CHAPTER 2 Subject RECEIVER-TRANSMITTER, RADIO RT-1523(C)/U MAINTENANCE INSTRUCTIONS
Figure 2-1. RT Functional Sections Block Diagram
Figure 2-2. RT Partitioning of Functional Sections
2-2. CONTROL SECTION
Figure 2-3. Control Section Module Locations
2-3. RF SECTION
2-4. ICOM I/O SECTION
2-5. POWER SUPPLY (1A3)
Figure 2-7. Power Supply Functional Block Diagram
2-6. RT CHASSIS (1A17)
Figure 2-8. RT Chassis External Connectors
2-7. BASIC RT SIGNAL TYPES
Figure 2-9. Antenna Connector Schematic
2-9. TRANSMIT RF SIGNAL PATH
2-11. TRANSMIT AUDIO SIGNAL PATH
2-13. TRANSMIT DATA SIGNAL PATH
2-14. PRIMARY CONTROL SIGNALS
2-15. FREQUENCY HOPPING OPERATIONS
FIGURE 2-10. FH BLOCK DIAGRAM
b. Receive Path Test (FAIL1)
2-17. RETRANSMIT OPERATION
2-19. REMOTE CONTROL OPERATION
SIGNAL NAME
2-20. CIPHER TEXT
Section Il. REPAIR PARTS, SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT - TM-11-5820-890-30-4_46
Figure 2-11. The Troubleshooting Process for the RT
2-27. TEST PRECAUTIONS AND NOTES
2-29. OPERATIONAL CHECK
Figure 2-12. Operational Check Test Setup Diagram
STEP 1. SELF-TEST -cONT
STEP 2. FREQUENCY LOAD TEST
STEP 4. RF OUTPUT TEST
STEP 4. RF OUTPUT TEST Cont
STEP 5. RECEIVER SENSITIVITY TEST
STEP 5. RECEIVER SENSITIVITY TEST cont
STEP 7. COMSEC ALARM TEST
STEP 9. ECCM LOAD TEST
STEP 9. ECCM TEST Cont
STEP 10. SINGLE CHANNEL TRANSMIT TEST -CONT
STEP 11. SINGLE CHANNEL RECEIVE TEST
STEP 12. FREQUENCY HOP RECEIVE TEST
STEP 13. SINGLE CHANNEL DATA TRANSMIT TEST -cont - TM-11-5820-890-30-4_63
STEP 13. SINGLE CHANNEL DATA TRANSMIT TEST -Cont - TM-11-5820-890-30-4_64
STEP 14. RETRANSMIT TEST
STEP 15. HOLD BATT CHECK
STEP 16. ZEROIZE COMSEC (1-5) TEST
2-30. TROUBLESHOOTING FLOWCHARTS
2-30. TROUBLESHOOTING FLOWCHARTS. Cont - TM-11-5820-890-30-4_69
2-30. TROUBLESHOOTING FLOWCHARTS. Cont - TM-11-5820-890-30-4_70
2-30. TROUBLESHOOTING FLOWCHARTS. Cont - TM-11-5820-890-30-4_71
2-30. TROUBLESHOOTING FLOWCHARTS. Cont
CHART 1 Troubleshooting Power Supply (Sheet 1 of 1) - TM-11-5820-890-30-4_73
CHART 2 Troubleshooting  Test Failure and Display (Sheet 1 of 8)
CHART 2 Troubleshooting Test Failure and Display (Sheet 2 of 8)
CHART 2 Troubleshooting Test Failure and Display (Sheet 3 of 8)
CHART 2 Troubleshooting           Test Failure and Display (Sheet 4 of 8)
CHART 2 Troubleshooting Test Failure and Display (Sheet 5 of 8)
CHART 2 Troubleshooting            Test Failure and Display (Sheet 6 of 8)
CHART 2 Troubleshooting Test Failure and Display (Sheet 7 of 8)
CHART 2 Troubleshooting Test Failure and Display (Sheet 8 of 8)
CHART 3 Troubleshooting Display Blanking Failure (Sheet 1 of 2)
CHART 3 Troubleshooting Display Blanking Failure (Sheet 2 of 2)
CHART 4 Troubleshooting Holding Battery (Sheet 1 of 2)
CHART 4 Troubleshooting Holding Battery (Sheet 2 of 2)
CHART 5 Troubleshooting Display Characters Failure (Sheet 1 of 1)
CHART 6 Troubleshooting Modules Present Self-Test (Sheet 1 of 2)
CHART 6 Troubleshooting Modules Present Self-Test (Sheet 2 of 2)
CHART 7 Troubleshooting Failure Displays (Sheet 1 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 2 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 3 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 4 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 5 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 6 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 7 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 8 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 9 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 10 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 11 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 12 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 13 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 14 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 15 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 16 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 17 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 18 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 19 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 20 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 21 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 22 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 23 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 24 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 25 of 26)
CHART 7 Troubleshooting Failure Displays (Sheet 26 of 26)
CHART 8 Troubleshooting Remote Control Circuits (Sheet 1 of 3)
CHART 8 Troubleshooting Remote Control Circuits (Sheet 2 of 3)
CHART 8 Troubleshooting Remote Control Circuits (Sheet 3 of 3)
CHART 9 Troubleshooting Fail 4 Displayed or Remote Test Failed (Sheet 1 of 8)
CHART 9 Troubleshooting Fail 4 Displayed or Remote Test Failed (Sheet 2 of 8)
CHART 9 Troubleshooting Fail 4 Displayed or Remote Test Failed (Sheet 3 of 8)
CHART 9 Troubleshooting Fail 4 Displayed or Remote Test Failed (Sheet 4 of 8)
CHART 9 Troubleshooting Fail 4 Displayed or Remote Test Failed (Sheet 5 of 8)
CHART 9 Troubleshooting Fail 4 Displayed or Remote Test Failed (Sheet 6 of 8)
CHART 9 Troubleshooting Fail 4 Displayed or Remote Test Failed (Sheet 7 of 8)
CHART 9 Troubleshooting Fail 4 Displayed or Remote Test Failed (Sheet 8 of 8)
CHART 10 Troubleshooting Keyboard Circuits and No 00000 Display (Sheet 1 of 2)
CHART 10 Troubleshooting Keyboard Circuits and No 00000 display (Sheet 2 of 2)
CHART 11 Troubleshooting Keyboard Circuits or No - - - - - Display (Sheet 1 of 1)
CHART 12 Troubleshooting CHAN Switch (Sheet 1 of 1)
CHART 13 Troubleshooting Vehicular RF Output (Sheet 1 of 8)
CHART 13 Troubleshooting Vehicular RF Output (Sheet 2 of 8)
CHART 13 Troubleshooting Vehicular RF Output Transmit Circuit (Sheet 3 of 8)
CHART 13 Troubleshooting Vehicular RF Output Transmit Circuit (Sheet 4 of 8)
CHART 13 Troubleshooting Vehicular RF Output Transmit Circuit (Sheet 5 of 8)
CHART 13 Troubleshooting Vehicular RF Output Transmit Circuit (Sheet 6 of 8)
CHART 13 Troubleshooting Vehicular RF Output Transmit Circuit (Sheet 7 of 8)
CHART 13 Troubleshooting Vehicular RF Output Transmit Circuit (Sheet 8 of 8)
CHART 14 Troubleshooting RF Power Output (Sheet 1 of 1)
CHART 15 Troubleshooting No SIG Display (Sheet 1 of 1)
CHART 16 Troubleshooting No SIG Display with Power Amplifier (Sheet 1 of 1)
CHART 17 Troubleshooting Medium Power Transmit Path (Sheet 1 of 1)
CHART 18 Troubleshooting Low Power Transmit Path (Sheet 1 of 1)
CHART 19 Troubleshooting RF Output (Sheet 1 of 1)
CHART 20 Troubleshooting Low Receiver Sensitivity (Sheet 1 of 9)
CHART 20 Troubleshooting Low Reoeiver Sensitivity (Sheet 2 of 9)
CHART 20 Troubleshooting Low Receiver Sensitivity (Sheet 3 of 9)
CHART 20 Troubleshooting Low Receiver Sensitivity (Sheet 4 of 9)
CHART 20 Troubleshooting Low Receiver Sensitivity (Sheet 5 of 9)
CHART 20 Troubleshooting Low Receiver Sensitivity (Sheet 6 of 9)
CHART 20 Troubleshooting Low Receiver Sensitivity (Sheet 7 of 9)
CHART 20 Troubleshooting Low Receiver Sensitivity (Sheet 8 of 9)
CHART 20 Troubleshooting Low Receiver Sensitivity (Sheet 9 of 9)
CHART 21 Troubleshooting No SIG Display (Sheet 1 of 1)
CHART 22 Troubleshooting   Sidetone/Squelch   Control (Sheet 1 of 1)
CHART 23 Troubleshooting   Volume   Control (Sheet 1 of 1)
CHART 24 Troubleshooting AUD/FILL Receive (Sheet 1 of 1)
CHART 25 Troubleshooting Sidetone (Sheet 1 of 6)
CHART 25 Troubleshooting Sidetone (Sheet 2 of 6)
CHART 25 Troubleshooting Sidetone (Sheet 3 of 6)
CHART 25 Troubleshooting Sidetone (Sheet 4 of 6)
CHART 25 Troubleshooting    Sidetone (Sheet 5 of 6)
CHART 25 Troubleshooting    Sidetone (Sheet 6 of 6)
CHART 26 Troubleshooting Sidetone (Sheet 1 of 1)
CHART 27 Troubleshooting COMSEC Alarm (Sheet 1 of 2)
CHART 27 Troubleshooting   COMSEC   Alarm (Sheet 2 of 2)
CHART 28 Troubleshooting COMSEC Alarm Clear (Sheet 1 of 1)
CHART 29 Troubleshooting COMSEC Lend (Sheet 1 of 2)
CHART 29 Troubleshooting COMSEC Load (Sheet 2 of 2)
CHART 30 Troubleshooting COMSEC STORE (Sheet 1 of 2)
CHART 30 Troubleshooting COMSEC STORE (Sheet 2 of 2)
CHART 31 Troubleshooting Frequency Hop Mode (Sheet 1 of 1)
CHART 32 Troubleshooting ECCM Load (Sheet 1 of 1)
CHART 33 Troubleshooting ECCM Load (Sheet 1 of 1)
CHART 34 Troubleshooting ECCM Load (Sheet 1 of 1)
CHART 35 Troubleshooting ERF Load (Sheet 1 of 1)
CHART 36 Troubleshooting ERF Load Monitor (Sheet 1 of 2)
CHART 36 Troubleshooting ERF Load Monitor (Sheet 2 of 2)
CHART 37 Troubleshooting Transmit Mode (Sheet 1 of 3)
CHART 37 Troubleshooting Transmit Mode (Sheet 2 of 3)
CHART 37 Troubleshooting Transmit Mode (Sheet 3 of 3)
CHART 38 Troubleshooting   Whisper   Mode (Sheet 1 of 1)
CHART 39 Troubleshooting COMSEC Transmission (Sheet 1 of 4)
CHART 39 Troubleshooting COMSEC Transmission (Sheet 2 of 4)
CHART 39 Troubleshooting COMSEC Transmission (Sheet 3 of 4)
CHART 39 Troubleshooting COMSEC Transmission (Sheet 4 of 4)
CHART 40 Troubleshooting CT Sidetone (Sheet 1 of 1)
CHART 41 Troubleshooting Transmission SC, Audio, CT (Sheet 1 of 1)
CHART 42 Troubleshooting Transmission Time Delay SC, Audio, CT (Sheet 1 of 1)
CHART 43 Troubleshooting Remote Variable (Sheet 1 of 1)
CHART 44 Troubleshooting   Receive   SC,   Audio,   CT (Sheet 1 of 1)
CHART 45 Troubleshooting Receive FH, Audio, CT (Sheet 1 of 2)
CHART 45 Troubleshooting Receive FH, Audio, CT (Sheet 2 of 2)
CHART 46 Troubleshooting Transmit FH, Audio, CT (Sheet 1 of 1)
CHART 47 Troubleshooting Transmit FH, Audio, (Sheet 1 of 1)
CHART 48 Troubleshooting Transmit CUE (Sheet 1 of 1)
CHART 49 Troubleshooting Transmit Data (Sheet 1 of 5)
CHART 49 Troubleshooting Transmit Data (Sheet 2 of 5)
CHART 49 Troubleshooting   Transmit   Data (Sheet 3 of 5)
CHART 49 Troubleshooting Transmit Data (Sheet 4 of 5)
CHART 49 Troubleshooting Transmit Data (Sheet 5 of 5)
CHART 50 Troubleshooting Transmit Data (Sheet 1 of 2)
CHART 50 Troubleshooting Transmit Data (Sheet 2 of 2)
CHART 51 Troubleshooting   Asterisk   (*)   Function
CHART 52 Troubleshooting Receive Data Operation (Sheet 1 of 2)
CHART 52 Troubleshooting Receive Data Operation (Sheet 2 of 2)
CHART 53 Troubleshooting Receive Data Operation (Sheet 1 of 2)
CHART 53 Troubleshooting Receive Data Operation (Sheet 2 of 2)
CHART 54 Troubleshooting Receive Data Operation (Sheet 1 of 2)
CHART 54 Troubleshooting Receive Data Operation (Sheet 2 of 2)
CHART 55 Troubleshooting Transmit Data Operation (Sheet 1 of 1)
CHART 56 Troubleshooting Transmit Data  Operation (Sheet 1 of 1)
CHART 57 Troubleshooting Retransmit Mode (Sheet 1 of 1)
CHART 58 Troubleshooting Retransmit Mode (Sheet 1 of 1)
CHART 59 Troubleshooting Retransmit Mode (Sheet 1 of 1)
CHART 60 Troubleshooting Retransmit Mode (Sheet 1 of 1)
CHART 61 Troubleshooting Retransmit Mode (Sheet 1 of 2)
CHART 61 Troubleshooting Retransmit Mode (Sheet 2 of 2)
CHART 62 Troubleshooting HOLD BATT Mode (Sheet 1 of 1)
CHART 63 Troubleshooting Zeroize COMSEC Mode (Sheet 1 of 1)
CHART 64 Troubleshooting Zeroize COMSEC Mode (Sheet 1 of 1)
CHART 65 Troubleshooting Zeroize COMSEC Mode (Sheet 1 of 1)
Section IV. MAINTENANCE    PROCEDURES
2-33. REPAIR PROCEDURES. Cont
2-34. REPLACEMENT OF RT COVERS
2-35. REPLACEMENT OF MODULES 1A2, 1A6, 1A7, 1A12, 1A13, 1A14, 1A15, and 1A16
Figure 2-13. RT Module Locations
2-36. REPLACEMENT OF IMPEDANCE MATCHING NETWORK (1A1)
2-37. REPLACEMENT OF POWER SUPPLY (1A3)
Figure 2-14. Module Screw Locations
2-38. REPLACEMENT OF ECCM MODULE (1A5)
2-39. REPLACEMENT OF CONTROL MODULE (1A4)
2-40. REPLACEMENT OF lF/DEMODULATOR (1A8)
Figure 2-15. RF Cable Locations
2-41. REPLACEMENT OF TUNER/MIXER (1A9)
2-42. REPLACEMENT OF SYNTHESIZER (1A10)
2-43. REPLACEMENT OF EXCITER/POWER AMPLIFIER (1A11)
2-44. REPLACEMENT OF RF CABLES 1W1 THROUGH 1W5
2-45. REPLACEMENT OF RT CHASSIS (1A17)
2-48. REPLACEMENT OF DATA ENTRY KEYPAD
Figure 2-16. RT Front Panel Keypad
2-47. REPLACEMENT OF FRONT PANEL ASSEMBLY
Figure 2-17. Front View of RT Front Panel Assembly
Figure 2-18. Rear View of RT Front Panel Assembly
REMOVAL - TM-11-5820-890-30-4_244
INSTALLATION - TM-11-5820-890-30-4_245
2-48. REPLACEMENT OF AUDIO FLEX (1A17A1W3)
REMOVAL Cont - TM-11-5820-890-30-4_247
INSTALLATION Cont - TM-11-5820-890-30-4_248
2-49. REPLACEMENT OF SWITCH FLEX (1A17A1W2). Cont
INSTALLATION - TM-11-5820-890-30-4_250
2-50. REPLACEMENT OF DISPLAY  CCA (1A17A1A1)
2-51. REPLACEMENT OF FRONT PANEL
INSTALLATION Cont
2-53. REPLACEMENT OF THREADED SCREW INSERTS
INSTALLATION - TM-11-5820-890-30-4_255
Section V. PREPARATION FOR STORAGE OR SHIPMENT - TM-11-5820-890-30-4_256
Figure 2-20. Packing Static Sensitive Modules
CHAPTER 3 MAINTENANCE GROUP, ELECTRICAL EQUIPMENT MAINTENANCE INSTRUCTIONS
3-4. MOUNTING BASE, ELECTRICAL EQUIPMENT MT-6352/VRC
figure 3-1. TEST ADAPTER FRONT PANEL
3-7. INTERCONNECTING DEVICE J-4501/GRC. Cont
Figure 3-2. Test Cables (Sheet 1 of 11)
Figure 3-2. Test Cables (Sheet 2 of 11)
Figure 3-2. Test Cables (Sheet 3 of 11)
Figure 3-2. Test Cables (Sheet 4 of 11)
Figure 3-2. Test Cables (Sheet 5 of 11)
Figure 3-2. Test Cables (Sheet 6 of 11)
Figure 3-2. Test Cables (Sheet 7 of 11)
Figure 3-2. Test CabIes (Sheet 8 of 11)
Figure 3-2. Test Cables (Sheet 9 of 11)
Figure 3-2. Test Cables (Sheet 10 of 11)
Figure 3-2. Test Cables (Sheet 11 of 11)
3-8. TEST ADAPTER
Figure  3-3. Test Adapter Interaction Block Diagram
Figure 3-4. Test Adapter Power Supply
Table 3-1. Test Adapter Switches Cont
Section Il. REPAIR PARTS, SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT
3-13. ASSEMBLY AND INSTALLATION OF STANDARD TEST SETUP. Cont
Figure 3-5. Assembly and Installation of Reference Fixture (Sheet 1 of 2)
Figure 3-5. Assembly and Installation of Reference Fixture (Sheet 2 of 2)
Section IV. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
Section V. TROUBLESHOOTING PROCEDURES
3-18. OPERATIONAL CHECK
STEP 1. SELF-TEST, LOAD, AND RF OUTPUT CHECK
Figure 3-6. Operational Check Test Setup Diagram
STEP 1. SELF-TEST, LOAD, AND RF OUTPUT CHECK -CONT
STEP 1. SELF-TEST, LOAD, AND RF OUTPUT CHECK -CONT
STEP 2. POWER SUPPLY OUTPUT CHECK - TM-11-5820-890-30-4_288
STEP 3. ECCM LOAD CHECK - CONT
STEP 5. SINGLE CHANNEL VOICCE CHECK
STEP 6. FREQUENCY HOPPING VOICE CHECK
STEP 8. SINGLE CHANNEL TACFIRE CHECK
STEP 9. SINGLE CHANNEL 16K DATA CHECK
STEP 10. REMOTE OPERATION CHECK
STEP 11. POWER SUPPLIES TEST
Figure 3-7. Maintenance Group Pretroubleshooting Test Setup
STEP 12. RF SECTION TEST
STEP 12. RF SECTION TEST -CONT
STEP 13. WIRING AND SWITCH TESTS
Table 3-2. Test Adapter Continuity Checks
Table 3-2. Test Adapter Continuity Checks Cont - TM-11-5820-890-30-4_301
Table 3-2. Test Adapter Continuity Checks Cont - TM-11-5820-890-30-4_302
Table 3-2. Test Adapter Continuity Checks Cont - TM-11-5820-890-30-4_303
Table 3-2. Test Adapter Continuity Checks Cont - TM-11-5820-890-30-4_304
3-19.   TEST  PRECAUTIONS  AND NOTES
3-21. TROUBLESHOOTING FLOWCHARTS
Chart 1 Troubleshooting Faulty Display (Sheet 1 of 1)
Figure 3-8. REF RT Troubleshooting Test Setup
Chart 2 Troubleshooting Remote Operation Failure (Sheet 1 of 1)
Figure 3-9. Control-Monitor Troubleshooting Test Setup
Chart 3 Troubleshooting RF Output (Sheet 1 of 1)
Chart 4 Troubleshooting Power Output (Sheet 1 of 1)
Chart 5 Troubleshooting 27.5 V Power Supply (Sheet 1 of 1)
Chart 6 Troubleshooting 27.5 V Power Supply (Sheet 1 of 1)
Chart 7 Troubleshooting 6.75 V Power Supply (Sheet 1 of 2)
Chart 7 Troubleshooting 6.75 V Power Supply (Sheet 2 of 2)
Chart 8 Troubleshooting 13 V Power Supply (Sheet 1 of 3)
Chart 8 Troubleshooting 13 V Power Supply (Sheet 2 of 3)
Chart 8 Troubleshooting 13 V Power Supply (Sheet 3 of 3)
Chart 9 Troubleshooting 5 V Power Supply (Sheet 1 of 1)
Chart 10 Troubleshooting 1.5 V Power Supply (Sheet 1 of 1)
Chart 11 Troubleshooting UUT GND Connection (Sheet 1 of 1)
Chart 12 Troubleshooting UUT GND Connection (Sheet 1 of 1)
Chart 13 Troubleshooting Relay K1 (Sheet 1 of 1)
Chart 14 Troubleshooting Relay K1 (Sheet 1 of 6)
Chart 14 Troubleshooting Relay K1 (Sheet 2 of 6)
Chart 14 Troubleshooting Relay K1 (Sheet 3 of 6)
Figure 3-10. Impedance Matching Test Setups
Chart 14 Troubleshooting Relay K1 (Sheet 4 of 6)
Chart 14 Troubleshooting Relay K1 (Sheet 5 of 6)
Chart 14 Troubleshooting Relay K1 (Sheet 6 of 6)
Chart 15 Troubleshooting RF to Frequency Counter Path (Sheet 1 of 7)
Chart 15 Troubleshooting RF to Frequency Counter Path (Sheet 2 of 7)
Chart 15 Troubleshooting RF to Frequency Counter Path (Sheet 3 of 7)
Chart 15 Troubleshooting RF to Frequency Counter Path (Sheet 4 of 7)
Chart 15 Troubleshooting RF to Frequency Counter Path (Sheet 5 of 7)
Chart 15 Troubleshooting RF to Frequency Counter Path (Sheet 6 of 7)
Chart 15 Troubleshooting RF to Frequency Counter Path (Sheet 7 of 7)
Chart 16 Troubleshooting Relay K2 (Sheet 1 of 1)
Chart 17 Troubleshooting Relay K2 (Sheet 1 of 1)
Chart 18 Troubleshooting UUT ANT to REF ANT RF path (Sheet 1 of 3)
Chart 18 Troubleshooting UUT ANT to REF ANT RF path (Sheet 2 of 3)
Chart 18 Troubleshooting UUT ANT to REF ANT RF path (Sheet 3 of 3)
3-22. ECCM AND COMSEC FILL DEVICES, MX-18290/VRC AND KYK-13/TSEC
Table 3-3. Threaded Screw Inserts Cont
Figure  3-11. Threaded Screw Insert Replacement
3-26. REMOVAL AND INSTALLATION OF TEST ADAPTER
Figure 3-12. Test Adapter Front Panel Repair. (Sheet 1 of 3)
Figure 3-12. Test Adapter Front Panel Repair. (Sheet 2 of 3)
Figure 3-12. Test Adapter Front Panel Repair. (Sheet 3 of 3)
3-27. REPLACEMENT OF CONNECTORS
b. Replacement of Circular Multipin Connector J11
c. Replacement of Six-pin Audio Connectors (J13, J14, and J18)
3-28. REPLACEMENT OF SWITCHES
b. Replacement of Rotary Switches (S1 through S6 and S8)
3-29. REPLACEMENT OF TEST POINTS AND POWER PLUGS
3-30. REPLACEMENT OF POWER SUPPLY CCA
3-31.   REPLACEMENT OF VOLTAGE REGULATORS
3-32. REPLACEMENT OF POWER SUPPLY MOUNTING BRACKET
3-33. REPLACEMENT OF RF CABLES
3-34. REPLACEMENT OF RELAYS
3-35. REPLACEMENT OF RELAY MOUNTING BRACKETS
3-36. REPLACEMENT OF RESISTOR R3
3-37. REPLACEMENT OF RESISTOR MOUNTING BRACKET
3-38. REPLACEMENT OF DUMMY LOAD AND ATTENUATORS
3-39. REPLACEMENT OF DIODE CR1
3-41. REPLACEMENT OF MOUNTING BRACKET
Section VIl. PREPARATION FOR STORAGE OR SHIPMENT
CHAPTER 4 AMPLIFIER-ADAPTER, VEHICULAR AM-7239/VRC AND AM-7239B/VRC MAINTENANCE INSTRUCTIONS
4-3. AUDIO   AMPLIFIER
Figure 4-1. Audio Amplifier Block Diagram
Section Il. REPAIR PARTS, AND SUPPORT Subject SPECIAL TOOLS, TMDE, EQUIPMENT
4-9. OPERATIONAL CHECK. Cont
Figure 4-2. Amplifier-Adapter Test Setup
STEP 1a. INPUT POWER CHECK FOR AM -7239 / VRC.
STEP 2. POWER SUPPLY OUTPUT CHECK FOR AM -7239 / VRC AND AM -7239B / VRC
STEP 2. AUDIO AMPLIFIER CHECK FOR AM -7239 / VRC AND AM -7239B / VRC
STEP 2. AUDIO AMPLIFIER CHECK FOR AM -7239 / VRC AND AM -7239B / VRC -CONT - TM-11-5820-890-30-4_379
STEP 2. AUDIO AMPLIFIER CHECK FOR AM -7239 / VRC AND AM -7239B / VRC -CONT - TM-11-5820-890-30-4_380
STEP 5. REMOTE CONTROL TRANSFORMERS CHECK FOR AM -7239 / VRC AND AM -7239B / VRC -CONT
STEP 6. INTERCOM AUDIO PATH CHECK FOR AM -7239 / VRC AND AM -7239B / VRC -CONT
4-11.   TEST  PRECAUTIONS  AND NOTES
4-13. TROUBLESHOOTING FLOWCHARTS
Chart   1 Troubleshooting Primary Power Circuit for AM-7239/VRC (Sheet 1 of 3)
Chart   1 Troubleshooting Primary Power Circuit for AM-7239/VRC (Sheet 2 of 3)
Chart   1 Troubleshooting Primary Power Circuit for AM-7239/VRC (Sheet 3 of 3)
Chart   2 Troubleshooting Primary Power Circuit for AM-7239/VRC (Sheet 1 of 1)
Chart   3 Troubleshooting Relay Control Circuit for AM-7239/VRC (Sheet 1 of 3)
Chart   3 Troubleshooting Relay Control Circuit for AM-7239/VRC (Sheet 2 of 3)
Chart   3 Troubleshooting Relay Control Circuit for AM-7239/VRC (Sheet 3 of 3)
Chart   4 Troubleshooting Primary Power Path AM-7239/VRC (Sheet 1 of 2)
Chart   4 Troubleshooting Primary Power Path AM-7239/VRC (Sheet 2 of 2)
Chart   5 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 1 of 6)
Chart   5 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 2 of 6)
Chart   5 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 3 of 6)
Chart   5 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 4 of 6)
Chart   5 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 5 of 6)
Chart   5 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 6 of 6)
Chart   6 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 1 of 12)
Chart   6 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 2 of 12)
Chart   6 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 3 of 12)
Chart   6 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 4 of 12)3.
Chart   6 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 5 of 12)
Chart   6 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 6 of 12)
Chart   6 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 7 of 12)
Chart   6 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 8 of 12)
Chart   6 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 9 of 12)
Chart   6 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 10 of 12)
Chart 6 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 11 of 12)
Chart 6 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 12 of 12)
Chart   7 Troubleshooting Primary Power Path for AM-7239B/VRC (Sheet 1 of 1)
Chart 8 Troubleshooting Power Supply 6.75 V dc Output (Sheet 1 of 7)
Chart   8 Troubleshooting Power Supply 6.75 V dc Output (Sheet 2 of 7)
Chart   8 Troubleshooting Power Supply 6.75 V dc Output (Sheet 3 of 7)
Chart   8 Troubleshooting Power Supply 6.75 V dc Output (Sheet 4 of 7)
Chart   8 Troubleshooting Power Supply 6.75 V dc Output (Sheet 5 of 7)
Chart   8 Troubleshooting Power Supply 6.75 V dc Output (Sheet 6 of 7)
Chart   8 Troubleshooting Power Supply 6.75 V dc Output (Sheet 7 of 7)
Chart   9 Troubleshooting Power Supply 13, 28, or 200 V dc Output (Sheet 1 of 2)
Chart   9 Troubleshooting Power Supply 13, 28, or 200 V dc Output (Sheet 2 of 2)
Chart   10 Troubleshooting Voltages at J7, J8, or J9 Connector (Sheet 1 of 3)
Chart   10 Troubleshooting Voltages at J7, J8, or J9 Connector (Sheet 2 of 3)
Chart   10 Troubleshooting Voltages at J7, J8, or J9 Connector (Sheet 3 of 3)
Chart   11 Troubleshooting Intercom Audio-A Line (Sheet 1 of 2)
Chart   11 Troubleshooting Intercom Audio-A Line (Sheet 2 of 2)
Chart   12 Troubleshooting Speaker Output (Sheet 1 of 1)
Chart 13 Troubleshooting Speaker Output (Sheet 1 of 1)
Chart   14 Troubleshooting Intercom Audio-B Line (Sheet 1 of 2)
Chart   14 Troubleshooting Intercom Audio-B Line (Sheet 2 of 2)
Chart   15 Troubleshooting Speaker Output (Sheet 1 of 1)
Chart   16 Troubleshooting Speaker Output (Sheet 1 of 1)
Chart   17 Troubleshooting ADMC-A Line (Sheet 1 of 1)
Chart   18 Troubleshooting ADMC-A Line (Sheet 1 of 1)
Chart   19 Troubleshooting ADMC-B Line (Sheet 1 of 1)
Chart   20 Troubleshooting ADMC-B Line (Sheet 1 of 1)
Chart   21 Troubleshooting COMSEC 13 V Line Filtering (Sheet 1 of 3)
Chart   21 Troubleshooting COMSEC 13 V Line Filtering (Sheet 2 of 3)
Chart   21 Troubleshooting COMSEC 13 V Line Filtering (Sheet 3 of 3)
Chart   22 Troubleshooting Shunt Regulator (Sheet 1 of 1)
Chart   23 Troubleshooting   8   Power   Amplifier   Interface (Sheet 1 of 1)
Chart   24 Troubleshooting J7 Power Amplifier Interface (Sheet 1 of 1)
Chart   25 Troubleshooting Remote Control Transformers (Sheet 1 of 8)
Chart   25 Troubleshooting Remote Control Transformers (Sheet 2 of 8)
Chart   25 Troubleshooting Remote Control Transformers (Sheet 3 of 8)
Chart   25 Troubleshooting Remote Control Transformers (Sheet 4 of 8)
Chart   25 Troubleshooting   Remote   Control   Transformers (Sheet 5 of 8)
Chart   25 Troubleshooting Remote Control Transformers (Sheet 6 of 8)
Chart   25 Troubleshooting Remote Control Transformers (Sheet 7 of 8)
Chart   25 Troubleshooting Remote Control Transformers (Sheet 8 of 8)
Chart 26 Troubleshooting Remote Control Transformers (Sheet 1 of 9)
Chart   26 Troubleshooting Remote Control Transformers (Sheet 2 of 9)
Chart   26 Troubleshooting Remote Control Transformers (Sheet 3 of 9)
Chart   26 Troubleshooting Remote Control Transformers (Sheet 4 of 9)
Chart   26 Troubleshooting Remote Control Transformers (Sheet 5 of 9)
Chart   26 Troubleshooting Remote Control Transformers (Sheet 6 of 9)
Chart   26 Troubleshooting Remote Control Transformers (Sheet 7 of 9)
Chart   26 Troubleshooting Remote Control Transformers (Sheet 8 of 9)
Chart   26 Troubleshooting Remote Control Transformers (Sheet 9 of 9)
Chart   27 Troubleshooting Two-Wire Terminals (Sheet 1 of 2)
Chart   27 Troubleshooting Two-Wire Terminals (Sheet 2 of 2)
Chart   28 Troubleshooting Two-Wire Terminals (Sheet 1 of 2)
Chart   28 Troubleshooting Two-Wire Terminals (Sheet 2 of 2)
Chart   29 Troubleshooting VIC-A Audio Transmit Line (Sheet 1 of 1)
Chart   30 Troubleshooting VIC-B Audio Transmit Line (Sheet 1 of 1)
Section IV. MAINTENANCE PROCEDURES FOR AM-7239/VRC
4-16. REPAIR INSTRUCTIONS.
4-17. REMOVAL AND INSTALLATION OF 5A3TB2 SHORTING BAR
4-18. REPLACEMENT OF POWER SUPPLY (5A1)
4-19. REPLACEMENT OF AUDIO AMPLIFIER CCA (5A2)
Figure 4-5. Vehicular Amplifier-Adapter AM-7239/VRC (Exploded View)
INSTALLATION - TM-11-5820-890-30-4_472
4-20. REPLACEMENT OF TRANSISTOR Q1
Figure 4-7. Transistor Q1 Replacement
4-21. REPLACEMENT OF CONNECTOR J9
4-22. Tools: REPLACEMENT OF CONNECTORS J2 - J6
Figure 4-8. Replacement of Components in Audio Amplifier Chassis
4-23. REPLACEMENT OF ELECTRICAL BINDING POSTS E1A, E2A, E1B, AND E2B
INSTALLATION - TM-11-5820-890-30-4_479
4-24. REPLACEMENT OF RESISTOR R1
4-25. REPLACEMENT OF REMOTE CONTROL TRANSFORMER CCA
4-26. REPLACEMENT OF CONNECTORS P2 AND P3
INSTALLATION - TM-11-5820-890-30-4_483
4-27. REPLACEMENT OF WIRING ON AUDIO AMPLIFIER CHASSIS CONNECTORS
INSTALLATION - TM-11-5820-890-30-4_485
4-28. REPLACEMENT OF AUDIO AMPLIFIER CHASSIS O-RING GASKET
REMOVAL Cont - TM-11-5820-890-30-4_487
INSTALLATION Cont - TM-11-5820-890-30-4_488
Figure 4-9. Maintenance of Audio Amplifier Chassis Case
4-29. REPLACEMENT OF SURGE ARRESTORS OR DIODES
4-30. REPLACEMENT OF AUDIO AMPLIFIER CASE
REMOVAL Cont - TM-11-5820-890-30-4_492
INSTALLATION Cont - TM-11-5820-890-30-4_493
4-31. REPLACEMENT OF CIRCUIT BREAKER CB1
Figure 4-10. Replacement of Components in Power Control Chassis
4-32. REPLACEMENT OF LAMP HOLDER DS1
4-33. REPLACEMENT OF RELAY K1
4-34. REPLACEMENT OF DIODE CR1
INSTALLATION - TM-11-5820-890-30-4_499
4-35. REPLACEMENT OF ZENER DIODE VR1/VR2
4-36. REPLACEMENT OF SIDE PANEL
Figure 4-11.  Disassembled View of  Mounting Adapter AM-7239/VRC
INSTALLATION - TM-11-5820-890-30-4_503
4-37. REPLACEMENT OF DIODE CR6
4-38. REPLACEMENT OF TERMINAL BLOCK TB2
4-39. REPLACEMENT Tools: retained screws (35), Iockwashers (23), step d. and flat washers (24) securing replace- ment terminal block TB2 (32) to power control chassis (17). Using flat tip screwdriver, install four re- These were removed in tained screws securing shorting bar (39) step c. and terminal lugs (37) with tagged wires to terminal block TB2 (32). Remove wire tags. Hold in place and tighten six captive This was removed in screws (13) securing rear access cover step b. (12) to power control chassis (10). See figure 4-5. Using torque screwdriver, torque screws to 8 to 10 in-lb. OF POWER CONTROL CHASSIS O-RING GASKET
INSTALLATION - TM-11-5820-890-30-4_507
Figure 4-12. Maintenance of Power Control Chassis Case
INSTALLATION Cont - TM-11-5820-890-30-4_509
4-40. REPLACEMENT OF BOTTOM COVER
4-41. REPLACEMENT OF TERMINAL BLOCK TB1
Figure 4-13. Disassembled View of Power Supply Chassis
4-42. REPLACEMENT OF SNAP LINE DRIVER CCA
4-43. REPLACEMENT OF WIRING
REMOVAL Cont - TM-11-5820-890-30-4_515
REMOVAL Cont - TM-11-5820-890-30-4_516
REMOVAL Cont - TM-11-5820-890-30-4_517
REMOVAL Cont - TM-11-5820-890-30-4_518
4-44. REPLACEMENT OF POWER SUPPLY CHASSIS
INSTALLATION - TM-11-5820-890-30-4_520
4-45. REPLACEMENT OF P1 CONNECTOR
4-46. REPLACEMENT OF J10 CONNECTOR
4-47. REPLACEMENT OF J11 CONNECTOR
Section V. MAINTENANCE PROCEDURES FOR AM-7239B/VRC
4-51. REPLACEMENT OF POWER SUPPLY (5A1)
INSTALLATION - TM-11-5820-890-30-4_526
Figure 4-14. Disassembled View of Mounting Adapter AM-7239BI/RC
4-52. REPLACEMENT OF 1-WATT AUDIO AMPLIFIER CCA (5A2)
4-53. REPLACEMENT OF TRANSISTOR Q1
Figure 4-15. Removal and Installation of Audio Amplifier Chassis Components
4-54. REPLACEMENT OF CONNECTOR J9
4-55. REPLACEMENT OF CONNECTOR J2 - J6
Figure 4-16. Replacement of Components in Audio Amplifier Chassis
4-56. REPLACEMENT OF ELECTRICAL BINDING POSTS E1A, E2A, E1B, AND E2B
4-57. REPLACEMENT OF RESISTOR R1
4-58. REPLACEMENT OF 2-WIRE DUAL TRANSIENT PROTECTION CCA
4-59. REPLACEMENT OF CONNECTORS P2 AND P3
4-60. REPLACEMENT OF WIRING ON AUDIO AMPLIFIER CHASSIS CONNECTORS
INSTALLATION - TM-11-5820-890-30-4_539
4-61. REPLACEMENT OF AUDIO AMPLIFIER CHASSIS O-RING GASKET
Figure 4-17. Removal and Installation of Audio Amplifier Chassis
Figure 4-18. Maintenance of Audio Amplifier Chassis Case
INSTALLATION - TM-11-5820-890-30-4_543
4-62. REPLACEMENT Tools: OF CIRCUIT BREAKER CB1
Figure 4-19. Replacement of Components in Power Control Chassis
4-63. REPLACEMENT OF LAMP HOLDER DS1
4-64. REPLACEMENT OF RELAY K1
4-65. REPLACEMENT OF DIODE CR1
4-66. REPLACEMENT OF ZENER DIODE VR1/VR2
4-67. REPLACEMENT OF SIDE PANEL
Figure 4-20. Disassembled View of Mounting Adapter AM-7239B/VRC
INSTALLATION cont - TM-11-5820-890-30-4_552
4-68. REPLACEMENT OF DIODE CR6
4-69. REPLACEMENT OF TERMINAL BLOCK TB2
4-70. REPLACEMENT OF POWER CONTROL CHASSIS O-RING GASKET.
INSTALLATION - TM-11-5820-890-30-4_556
Figure 4-21. Maintenance of Power Control Chassis Case
4-71. REPLACEMENT OF TERMINAL BLOCK TB1
Figure 4-22. Disassembled View of Power Supply Chassis
4-72. REPLACEMENT OF SNAP LINE DRIVER CCA
INSTALLATION - TM-11-5820-890-30-4_561
4-73. REPLACEMENT OF REMOTE CONTROL TRANSFORMER CCA
INSTALLATION - TM-11-5820-890-30-4_563
4-74. REPLACEMENT OF POWER SUPPLY HEATSINK
REMOVAL Cont - TM-11-5820-890-30-4_565
INSTALLATION - TM-11-5820-890-30-4_566
INSTALLATION Cont - TM-11-5820-890-30-4_567
4-75. REPLACEMENT OF POWER SUPPLY COVER GASKET
Figure 4-23. Replacement of Power Supply Cover Gasket
4-76. REPLACEMENT OF P1 CONNECTOR
4-77. REPLACEMENT OF J10 CONNECTOR
4-78. REPLACEMENT OF J11 CONNECTOR
Section VI. Subject PREPARATION FOR STORAGE OR SHIPMENT
Figure  4-24. Packing Static Sensitive Modules
CHAPTER 5 AMPLIFIER, RADIO FREQUENCY AM-7238/VRC MAINTENANCE INSTRUCTIONS
Figure 5-1. Power Amplifier Block Diagram
5-4. RF SIGNAL PATHS
Section Il. REPAIR PARTS, SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT
5-10. OPERATIONAL CHECK. Cont
Figure 5-2. RF Power Amplifier Test Setup.
Step 1. SAFE TO TURN ON CHECK
Figure 5-3. Reference RF Output Test Setup
Step 3. RECEIVE PATH LOSS CHECK
Figure 5-4. RF Output Test Setup
Step 4. SIGNAL STRENGTH CHECK
5-11. TROUBLESHOOTING
5-13. EXPLANATION OF SYMBOLS AND NOTES
Figure 5-5. Test Point Locations for Decoder Control (6A2)
Figure 5-6. Test Point Locations in Power Amplifier Case (6A1)
Figure 5-7. Test Point Locations for Power Amplifier Heat Sink (6A3)
Chart 1 Troubleshooting Primary Power Overcurrent (Sheet 1 of 1)
Chart 2 Troubleshooting RF Output at 88 MHz (Sheet 1 of 6)
Figure 5-8. RF Output (dBm) Troubleshooting Test Setup
Figure 5-9. RF Output (V dc) Troubleshooting Test Setup.
Chart 2 (Sheet 2 of 6)
Chart 2 Troubleshooting RF Output at   88 MHz (Sheet 3 of 6)
Chart 2 Troubleshooting RF Output at 88 MHz (Sheet 4 of 6)
Chart 2 Troubleshooting RF Output at 88 MHz (Sheet 5 of 6)
Chart 2 Troubleshooting RF Output at 88 MHz (Sheet 6 of 6)
Chart 3 Troubleshooting   RF   Power   Output   at   55z (Sheet 1 of 2)
Chart 3 Troubleshooting RF Power Output at 55 MHz (Sheet 2 of 2)
Chart 4 Troubleshooting RF Power Output at 33 MHz (Sheet 1 of 2)
Chart 4 Troubleshooting RF Power Output at 33 MHz (Sheet 2 of 2)
Chart 5 Troubleshooting Receive Path (Sheet 1 of 1)
Chart 6 Troubleshooting 5:1 VSWR Adjustment Circuit (Sheet 1 of 1)
Figure 5-10. VSWR Adjustment Troubleshooting Test Setup
Chart 7 Troubleshooting 5:1 VSWR Adjustment Circuit (Sheet 1 of 1)
Section IV. Subject General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . Operational Check   . . . . . . . . . . . . . . . . . . . . . Repair Instructions   . . . . . . . . . . . . . . . . . . . . Disassembly for Troubleshooting . . . . . . . . Replacement of Power Amplifier Cover . . . Replacement of Decoder Control (6A2) . . Replacement of Power Amplifier Heat Sink MAINTENANCE PROCEDURES
5-18. DISASSEMBLY FOR TROUBLESHOOTING
Figure 5-11. Power Amplifier (Exploded View)
5-19. REPLACEMENT OF POWER AMPLIFIER COVER
INSTALLATION - TM-11-5820-890-30-4_613
5-21. REPLACEMENT OF POWER AMPLIFIER HEAT SINK (6A3). Cont
5-22. REPLACEMENT OF POWER AMPLIFIER CASE (6A1)
Section V. PREPARATION FOR STORAGE OR SHIPMENT - TM-11-5820-890-30-4_616
Figure 5-12. Packing Static Sensitive Modules
CHAPTER 6 CONTROL-MONITOR C-11291/VRC MAINTENANCE INSTRUCTIONS
Figure 6-1. Control-Monitor Functional Block Diagram
6-2. CONTROL-MONITOR CHASSIS (7A1)
6-3. MICROCONTROLLER (7A2). Cont
Figure 6-3. Decoder/Timer Functional Block Diagram
6-5. ANALOG MODULE (7A4)
Figure 6-4. Analog Module Functional Block Diagram
Figure 6-5. Power Supply Functional Block Diagram
Figure 6-6. Analog Check Timing
6-8. INTERFACE FAULTS AND ERRORS
6-13. OPERATIONAL CHECK
Step 1. SELF-TEST
Figure 6-7. Control-Monitor Test
STEP 3. CONTROL FUNCTION CHECK
Step 4. INPUT AND RADIO SELECT CHECK
Figure 6-8. Operation with Radio Test setup
6-14. TROUBLESHOOTING
6-16. EXPLANATION OF SYMBOLS AND NOTES
Chart 1 Troubleshooting Display  Circuit (Sheet 1 of 5)
Chart 1 Troubleshooting Display Circuit (Sheet 2 of 5)
Chart 1 Troubleshooting Display Circuit (Sheet 3 of 5)
Chart 1 Troubleshooting Display Circuit (Sheet 4 of 5)
Chart 1 Troubleshooting Display Circuit (Sheet 5 of 5)
Chartl 2 Troubleshooting Display Circuit (Sheet 1 of 4)
Chart 2 Troubleshooting Display Circuit (Sheet 2 of 4)
Chart 2 Troubleshooting Display Circuit (Sheet 3 of 4)
Chart 2 Troubleshooting Display Circuit (Sheet 4 of 4)
Chart 3 Troubleshooting   F2   Display (Sheet 1 of 3)
Chart 3 Troubleshooting   F2   Display (Sheet 2 of 3)
Chart 3 Troubleshooting   F2   Display (Sheet 3 of 3)
Chart 4 Troubleshooting   Radio   Transmit (Sheet 1 of 2)
Chart 4 Troubleshooting Radio Transmit (Sheet 2 of 2)
Chart 5 Troubleshooting Incorrect Display in  RF (CONTROL M) (Sheet 1 of 1)
Chart 6 Troubleshooting Incorrect Display in RF (any other display) (Sheet 1 of 1)
Chart 7 Troubleshooting Incorrect Display  in MODE or VAR (Sheet 1 of 1)
Chart 8 Troubleshooting Incorrect Display in CONTROL (Sheet 1 of 1)
Chart 9 Troubleshooting Incorrect Display After INIT Set to UP (Sheet 1 of 1)
Chart 10 Troubleshooting Incorrect Display After INIT Set to ON (Sheet 1 of 1)
Chart 11 Troubleshooting   Incorrect   Control-Monitor   Output (Sheet 1 of 1)
Chart 12 Troubleshooting Incorrect Test Cycle Display (Sheet 1 of 1)
Chart 13 Troubleshooting Ud Display (Sheet 1 of 1)
Chart 14 Troubleshooting Power Supply (Sheet 1 of 2)
Chart 14 Troubleshooting Power Supply (Sheet 2 of 2)
Chart 15 Troubleshooting Incorrect Display in CHAN or COMSEC (Sheet 1 of 1)
Section IV. MAINTENANCE PROCEDURES - TM-11-5820-890-30-4_662
6-21. CAUTION DISASSEMBLY FOR TROUBLESHOOTING
6-22. REPLACEMENT OF BACK COVER
6-24. REPLACEMENT OF CONTROL-MONITOR MODULES
Section V. PREPARATION FOR STORAGE OR SHIPMENT - TM-11-5820-890-30-4_666
Figure 6-10. Packing Static Sensitive Modules
CHAPTER 7 MOUNTING BASE, ELECTRICAL EQUIPMENT MT-6352/VRC MAINTENANCE INSTRUCTIONS
Figure 7-1. Electrical Connector Assembly Schematic Diagram
Section Ill. TROUBLESHOOTING PROCEDURES - TM-11-5820-890-30-4_670
Figure 7-2. Electrical Connector Assembly (Exploded View)
Section IV. MAINTENANCE PROCEDURES - TM-11-5820-890-30-4_672
7-9. REPLACEMENT OF ACCESS COVER. Cont
7-10. REPLACEMENT OF CONNECTOR CASE
REMOVAL Cont - TM-11-5820-890-30-4_675
INSTALLATION Cont - TM-11-5820-890-30-4_676
7-11. REPLACEMENT OF J1 , J2, J3, OR J4 CONNECTOR
7-12. REPLACEMENT OF J5 CONNECTOR
INSTALLATION - TM-11-5820-890-30-4_679
7-13. REPLACEMENT OF FL1 FILTER
7-14. REPLACEMENT OF FL2 FILTER
INSTALLATION - TM-11-5820-890-30-4_682
7-14. REPLACEMENT  OF FL2 FILTER
7-15. REPLACEMENT OF WIRING
INSTALLATION Cont - TM-11-5820-890-30-4_685
7-16. REPLACEMENT OF THREADED SCREW INSERTS
Figure   7-3.   Threaded  Screw Insert Replacement
7-17. REPLACEMENT OF FILTER EMI-CCA
Section V. PREPARATION FOR STORAGE OR SHIPMENT - TM-11-5820-890-30-4_689
CHAPTER 8 BATTERY BOX CY-8523A/PRC MAINTENANCE lNSTRUCTIONS
Section Ill. TROUBLESHOOTING PROCEDURES
8-8. EXPLANATION OF SYMBOLS AND NOTES
Chart 1 Troubleshooting   Battery   Box (Sheet 1 of 1)
Figure 8-2. CCA IS GEN Battery Box Troubleshooting Test Setup
Section IV. MAINTENANCE PROCEDURES - TM-11-5820-890-30-4_695
8-11. VISUAL INSPECTION OF BATTERY BOX
Figure 8-3. Battery Box CY-8523A/PRC (Exploded View)
8-12. REPLACEMENT OF BATTERY BOX COVER
8-13. REPLACEMENT OF LATCH/STRIKE ASSEMBLY
8-15. REPLACEMENT OF TWO-WIRE TRANSIENT PROTECTION CCA
INSTALLATION - TM-11-5820-890-30-4_701
INSTALLATION - TM-11-5820-890-30-4_702
8-17. REPLACEMENT OF BINDING POSTS
8-18. REPLACEMENT OF J1 CONNECTOR
8-19. REPLACEMENT OF P1 CONNECTOR
8-21. REPLACEMENT OF DAMPENING TAPE GASKET
8-22. REPLACEMENT OF WIRES
8-23. REPLACEMENT OF PLASTIC STRIP
8-24. REPLACEMENT OF BATTERY BOX CASE
Section V. PREPARATION FOR STORAGE OR SHIPMENT - TM-11-5820-890-30-4_710
CHAPTER 9 MOUNTING BASE, ELECTRICAL EQUIPMENT MT-6353/VRC MAINTENANCE INSTRUCTIONS
FIGURE 9-1. PA MOUNT SCHEMATIC DIAGRAM
Section Il. REPAIR PARTS, SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT
9-8. OPERATIONAL CHECK
Figure 9-2. PA Mount Test Setup
Step 2. POWER SUPPLY OUTPUT CHECK - TM-11-5820-890-30-4_717
9-9. TROUBLESHOOTING
9-10.    TEST PRECAUTIONS AND NOTES
9-12. TROUBLESHOOTING FLOWCHARTS
Chart 1 Troubleshooting Short on Input to Power Supply (Sheet 1 of 1)
Chart 2 Troubleshooting Lamp DS1 Circuit (Sheet 1 of 1)
Chart 3 Troubleshooting Power Supply 6.75 V dc Output (Sheet 1 of 1)
Chart 4 Troubleshooting Power Supply 13 V dc Output (Sheet 1 of 1)
Chart 5 Troubleshooting Power Supply 27 V dc Output (Sheet 1 of 1)
Chart 6 Troubleshooting Power Supply 200 V dc Output (Sheet 1 of 1)
Section IV. Subject General    . . . . . . . . . . . . . . . . . . . . . Operational Check . . . . . . . . . . . . . . . Repair Procedures   . . . . . . . . . . . . .. . . Replacement of Power Supply    . . . . . . . . . Replacement of PA Mount Chassis . . . . . . Lamp DS1 Replacement    . . . . . . . . . . . . . 9-13. GENERAL. MAINTENANCE    PROCEDURES
Figure 9-3. Diode CR2 Position on Relay K1
Figure 9-5. Mounting Bracket with CR1, VR1, VR2, CR3, and R1
9-16. REPLACEMENT OF POWER SUPPLY
9-17. REPLACEMENT OF PA MOUNT CHASSIS
CHAPTER 10 ANTENNA BASE, ELECTRICAL EQUIPMENT AS-3684/VRC AND AS-3900/VRC MAINTENANCE INSTRUCTIONS
Section III. TROUBLESHOOTING PROCEDURES
Step 1. AS-3684 ANTENNA BASE CHECK
Figure 10-1. AS-3684 Antenna Base Test Setup
Step 2. AS-3900 ANTENNA BASE CHECK
Figure 10-2. AS-3900 Antenna Base Test Setup
Section IV. MAINTENANCE PROCEDURES
CHAPTER 11 CABLE ASSEMBLY, SPECIAL PURPOSE, ELECTRICAL CX-13313/VRC MAINTENANCE   INSTRUCTIONS
Section Ill. TROUBLESHOOTING PROCEDURES
Step 1. CX-13313/VRC CABLE CHECK
Figure 11-1. CX-13313/VRC
Section IV. MAINTENANCE PROCEDURES
CHAPTER 12 RECEIVER-TRANSMITTER C-11561(C)/U (RCU) MAINTENANCE INSTRUCTIONS
Figure 12-1. RCU Functional Sections Block Diagram
Figure 12-2. RCU Partitioning of Functional Sections
12-2. CONTROL SECTION
12-3. ICOM I/O SECTION
Figure 12-4. ICOM I/O Section Module Locations
Table 12-1. ICOM Power Supply Output Destinations
12-3. ICOM I/O SECTION. Cont
12-4. SPEAKER AMPLIFIER SECTION
Figure 12-5. Speaker Amplifier Section Module Locations
12-5. POWER SUPPLY (19A1)
Figure 12-7. Power Supply Functional Block Diagram
Table 12-4. Power Supply Output Destinations
Figure 12-8. Front Panel/Chassis External Connectors
12-7. BASIC RCU SIGNAL TYPES
12-9. ANALOG TRANSMIT SIGNAL PATH
12-10. DIGITAL DATA RECEIVE SIGNAL PATH
12-11. DIGITAL DATA TRANSMIT SIGNAL PATH
12-12. SPEAKER OPERATION
12-14. SELF-TEST
12-15. FILL OPERATION
Section Il. REPAIR PARTS, SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT
Section III. TROUBLESHOOTING PROCEDURES
Figure 12-9. The Troubleshooting Process for the RCU
12-21. 12-22. TEST PRECAUTIONS AND NOTES
12-23. OPERATIONAL CHECK
Figure 12-10. Operational Check Test Setup Diagram
Step 2. SELF-TEST.
Step 3. ICM TEST
Step 3. ICM TEST. Cont
Step 4. FREQUENCY LOAD TEST
Step 5. COMSEC ALARM TEST
Step 6. COMSEC VARIABLE LOAD TEST
Step 7. TRANSMIT VOICE TEST
Step 7. TRANSMIT VOICE TEST. Cont
Step 8. TRANSMIT ANALOG DATA TEST
Step 9. TRANSMIT DIGITAL DATA TEST
Step 9. TRANSMIT DIGITAL DATA TEST. Cont
Step 10. RECEIVE DIGITAL DATA TEST
Step 11. RECEIVE FREQUENCY HOP VOICE TEST
Step 12. RF OUTPUT TEST
Step 14. HOLD BATT TEST
Step 16. ZEROIZE COMSEC VARIABLE (6) TEST
Step 17. Z-FH TEST
12-24. TROUBLESHOOTING FLOWCHARTS
12-24. TROUBLESHOOTING FLOWCHARTS. Cont - TM-11-5820-890-30-4_791
Figure 12-11. RCU Parent Board Connectors
12-24. TROUBLESHOOTING FLOWCHARTS. Cont - TM-11-5820-890-30-4_793
12-24. TROUBLESHOOTING FLOWCHARTS. Cont - TM-11-5820-890-30-4_794
CHART 1 Troubleshooting Power Supply (Sheet 1 of 1) - TM-11-5820-890-30-4_795
CHART 2 Troubleshooting Speaker System (Sheet 1 of 1)
CHART 3 Troubleshooting Turn-On Initialization Failure (Sheet 1 of 4)
CHART 3 Troubleshooting Turn-On Initialization Failure (Sheet 2 of 4)
CHART 3 Troubleshooting Turn-On Initialization Failure (Sheet 3 of 4)
CHART 3 Troubleshooting Turn-On Initialization Failure (Sheet 4 of 4)
CHART 4 Troubleshooting Alarm Tone Failure (Sheet 1 of 5)
CHART 4 Troubleshooting Alarm Tone Failure (Sheet 2 of 5)
CHART 4 Troubleshooting Alarm Tone Failure (Sheet 3 of 5)
CHART 4 Troubleshooting Alarm Tone Failure (Sheet 4 of 5)
CHART 4 Troubleshooting Alarm Tone Failure (Sheet 5 of 5)
CHART 5 Troubleshooting Hold Up  Battery (Sheet 1 of 1)
CHART 6 Troubleshooting Display Dimming (Sheet 1 of 1)
CHART 7 Troubleshooting ERROR Display (Sheet 1 of 2)
CHART 7 Troubleshooting ERROR Display (Sheet 2 of 2)
CHART 8 Troubleshooting COMSEC Present Self-Test (Sheet 1 of 1)
CHART 9 Troubleshooting Display Self-Teat Failure (sheet 1 of 1)
CHART 10 Troubleshooting Self-Test Failure (Sheet 1 of 15)
CHART 10 Troubleshooting Self-Test Failure (Sheet 2 of 15)
CHART 10 Troubleshooting Self-Test Failure (Sheet 3 of 15)
CHART 10 Troubleshooting Self-Test Failure (Sheet 4 of 15)
CHART 10 Troubleshooting Self-Test Failure (Sheet 5 of 15)
CHART 10 Troubleshooting Self-Test Failure (Sheet 6 of 15)
CHART 10 Troubleshooting Self-Test Failure (Sheet 7 of 15)
CHART 10 Troubleshooting Self-Test Failure (Sheet 8 of 15)
CHART 10 Troubleshooting Self-Test Failure (Sheet 9 of 15)
CHART 10 Troubleshooting Self-Test Failure (Sheet 10 of 15)
CHART 10 Troubleshooting Self-Test Failure (Sheet 11 of 15)
CHART 10 Troubleshooting Self-Test Failure (Sheet 12 of 15)
CHART 10 Troubleshooting Self-Test Failure (Sheet 13 of 15)
CHART 10 Troubleshooting Self-Test Failure (Sheet 14 of 15)
CHART 10 Troubleshooting Self-Test Failure (Sheet 15 of 15)
CHART 11 Troubleshooting COMSEC PT Failure (Sheet 1 of 1)
CHART 12 Troubleshooting REM Link Failure (Sheet 1 of 2)
CHART 12 Troubleshooting REM Link Failure (Sheet 2 of 2)
CHART 13 Troubleshooting ICM REM Audio Failure (Sheet 1 of 3)
CHART 13 Troubleshooting ICM REM Audio Failure (Sheet 2 of 3)
CHART 13 Troubleshooting ICM REM Audio Failure (Sheet 3 of 3)
CHART 14 Troubleshooting Receive ICM Alarm Failure (Sheet 1 of 3)
CHART 14 Troubleshooting Receive ICM Alarm Failure (Sheet 2 of 3)
CHART 14 Troubleshooting Receive ICM Alarm Failure (Sheet 3 of 3)
CHART 15 Troubleshooting SPKR Failure (Sheet 1 of 3)
CHART 15 Troubleshooting SPKR Failure (Sheet 2 of 3)
CHART 15 Troubleshooting SPKR Failure (Sheet 3 of 3)
CHART 16 Troubleshooting Transmit ICM Alarm Failure (Sheet 1 of 5)
CHART 16 Troubleshooting Transmit ICM Alarm Failure (Sheet 2 of 5)
CHART 16 Troubleshooting Transmit ICM Alarm Failure (Sheet 3 of 5)
CHART 16 Troubleshooting Transmit ICM Alarm Failure (Sheet 4 of 5)
CHART 16 Troubleshooting Transmit ICM Alarm Failure (Sheet 5 of 5)
CHART 17 Troubleshooting Transmit ICM Voice Failure (Sheet 1 of 4)
CHART 17 Troubleshooting Transmit ICM Voice Failure (Sheet 2 of 4)
CHART 17 Troubleshooting Transmit ICM Voice Failure (Sheet 3 of 4)
CHART 17 Troubleshooting Transmit IOM Voice Failure (Sheet 4 of 4)
CHART 18. Troubleshooting WHSP Failure (Sheet 1 of 1)
CHART 19 Troubleshooting Channel Number   Display Failure (sheet 1 of 1)
CHART 20 Troubleshooting Keyboard Failure Display (sheet 1 of 2)
CHART 20 Troubleshooting Keyboard Failure Display (sheet 2 of 2)
CHART 21 Troubleshooting No. _____ Display (sheet 1 of 1)
CHART 22 Troubleshooting Clearing COMSEC Alarm Failure (Sheet 1 of 1)
CHART 23 Troubleshooting AUD/DATA Audio Failure (Sheet 1 of 1)
CHART 24 Troubleshooting COMSEC Load Failure (Sheet 1 of 3)
CHART 24 Troubleshooting COMSEC Load Failure (Sheet 2 of 3)
CHART 24 Troubleshooting COMSEC Load Failure (Sheet 3 of 3)
CHART 25 Troubleshooting COMSEC Store Failure (Sheet 1 of 2)
CHART 25 Troubleshooting COMSEC Store Failure (Sheet 2 of 2)
CHART 26 Troubleshooting Transmit Voice FM Deviation Failure (Sheet 1 of 2)
CHART 26 Troubleshooting Transmit Voice FM Deviation Failure (Sheet 2 of 2)
CHART 27 Troubleshooting Transmit CT Voice (TEK 5) Failure (Shoot 1 of 3)
CHART 27 Troubleshooting Transmit CT Voice   (TEK 5) Failure (Sheet 2 of 3)
CHART 27 Troubleshooting Transmit CT Voice   (TEK 5) Failure (Sheet 3 of 3)
CHART 28 Troubleshooting CT Sidetone Failure (Sheet 1 of 1)
CHART 29 Troubleshooting Transmit CT Voice (TEK   1, 2, 3, or 4) Failure (Sheet 1 of 1)
CHART 30 Troubleshooting Transmit TD Voice Failure (Sheet 1 of 1)
CHART 31 Troubleshooting RK 6 Display Failure (Sheet 1 of 1)
CHART 32 Troubleshooting Transmit CT TF Data Failure (Shoot 1 of 3)
CHART 32 Troubleshooting Transmit CT TF Data Failure (Sheet 2 of 3)
CHART 32 Troubleshooting Transmit CT TF Data Failure (Sheet 3 of 3)
CHART 33 Troubleshooting Transmit CT 4800 Data Failure (Sheet 1 of 4)
CHART 33 Troubleshooting Transmit CT 4800 Data Failure (Sheet 2 of 4)
CHART 33 Troubleshooting Transmit CT 4800 Data Failure (Sheet 3 of 4)
CHART 33 Troubleshooting Transmit CT 4800 Data Failure (Sheet 4 of 4)
CHART 34 Troubleshooting Transmit CT 16000 Data Failure (Sheet 1 of 1)
CHART 35 Troubleshooting Transmit PT 16000 Failure (Sheet 1 of 1)
CHART 36 Troubleshooting Receive PT 16000  Data Failure (Sheet 1 of 2)
CHART 36 Troubleshooting Receive PT 16000 Data Failure (Sheet 2 of 2)
CHART 37 Troubleshooting Receive Frequency Hop Voice FH Failure (sheet 1 of 1)
CHART 38 Troubleshooting receive frequancy hop voice FH-M Failure (sheet 1 of 1)
CHART 39 Troubleshooting RF Output Level Failure (Sheet 1 of 1)
CHART 40 Troubleshooting Sidetone Failure (Sheet 1 of 1)
CHART 41 Troubleshooting Sidetone Disable Failure (Sheet 1 of 1).
CHART 42 Troubleshooting RXMT Failure (Sheet 1 of 1)
CHART 43 Troubleshooting SQ OFF Failure (Sheet 1 of 1)
CHART 44 Troubleshooting HOLD BATT Failure (Sheet 1 of 1)
CHART 45 Troubleshooting Zeroize COMSEC Variable (1-5) Failure (Sheet 1 of 1)
CHART 46 Troubleshooting COMSEC Variable (1-5) Zeroize Variable (6) Failure (Sheet 1 of 1)
CHART 47 Troubleshooting Zeroize COMSEC Variable (6) Failure (Sheet 1 of 1)
CHART 48. Troubleshooting Z-FH Failure (Sheet 1 of 1)
Section IV. MAINTENANCE PROCEDURES - TM-11-5820-890-30-4_892
12-28. 1. Tools: REPAIR PROCEDURES. Continued (e) Remove the module. (f) Unhook the module extractor from the module. 5.   Handle   all   modules   carefully. 6. Before Installing a module, check the connector for bent or broken pins. Do not install if damaged. 7.   Perform   the   operational   check. Repair Precautions. CAUTION Static electricity can damage the RCU modules. Ground the RCU and all tools before removing a module. Use a grounded wrist strap when handling a module. CAUTION Steps marked with           must be performed exactly as written. They are critical in maintaining the nuclear hardness of the RCU. Seals must not be damaged. All screws must be torqued to the limits specified in the replacement procedures. REPLACEMENT OF RCU COVERS
2. Removal and Installation of Bottom Cover
Figure 12-12. RCU Module Locations
12-30. REPLACEMENT  OF POWER SUPPLY (19A1)
Figure 12-13. Module Screw Locations
12-31. REPLACEMENT OF DC POWER FILTER (19A12)
12-32. REPLACEMENT OF FRONT PANEL/CHASSIS (19A13)
12-33. REPLACEMENT OF DATA ENTRY KEYPAD
Figure 12-14. RCU Front Panel Keypad
12-34. Tools: REPLACEMENT OF FRONT PANEL ASSEMBLY
REMOVAL Cont - TM-11-5820-890-30-4_903
INSTALLATION cont - TM-11-5820-890-30-4_904
Figure 12-15. Front View of RCU Front Panel Assembly
Figure 12-16. Rear View of RCU Front Panel Assembly
12-35. Tools: REPLACEMENT OF AUDIO FLEX
INSTALLATION - TM-11-5820-890-30-4_908
12-36. REPLACEMENT . OF SWITCH FLEX
REMOVAL Cont - TM-11-5820-890-30-4_910
12-37 REPLACEMENT OF DISPLAY CCA
12-38. REPLACEMENT OF FRONT PANEL
REMOVAL - TM-11-5820-890-30-4_913
12-39. REPLACEMENT OF OBSERVATION WINDOW
Section V. PREPARATION FOR STORAGE OR SHIPMENT - TM-11-5820-890-30-4_915
Figure  12-17. Packing Static Sensitive Modules
CHAPTER 13 POWER SUPPLY ADAPTER, VEHICULAR MX-10862/VRC MAINTENANCE INSTRUCTIONS
13-2. HEAT SINK ASSEMBLY
Section Il. REPAIR PARTS, AND SUPPORT Subject TM 11-5820-890-30-4 SPECIAL TOOLS, TMDE, EQUIPMENT
Figure 13-1. Power Supply Adapter Test Setup
Step 2. POWER SUPPLY OUTPUT CHECK
Step 3. REMOTE CONTROL CIRCUIT CHECK
Step 4. CONTINUITY CHECKS
13-11. TEST  PRECAUTIONS  AND NOTES
13-12. EXPLANATION OF SYMBOLS AND NOTES
Chart   1 Troubleshooting   Primary   Power   Circuit (Sheet 1 of 2)
Chart   1 Troubleshooting Primary Power Circuit (Sheet 2 of 2)
Chart   2 Troubleshooting DS1 Indicator lamp Circuit (Sheet 1 of 2)
Chart   2 Troubleshooting DS1 Indicator lamp Circuit (Sheet 2 of 2)
Chart   3 Troubleshooting 27.5 V dc Power Circuit (Sheet 1 of 1)
Chart   4 Troubleshooting Remote Control Switch Circuit (Sheet 1 of 1)
Chart   5 Troubleshooting   Remote   Control   Switch   Circuit (Sheet 1 of 1)
Chart   6 Troubleshooting 27 V dc Output Circuit (Sheet 1 of 1)
Chart   7 Troubleshooting 13 V dc Output Circuit (Sheet 1 of 1)
Chart   8 Troubleshooting 6.75 and 200 V dc Output Circuits (Sheet 1 of 1)
Chart   9 Troubleshooting 13 V dc Battery Tray Input Circuit (Sheet 1 of 1)
Chart   10 Troubleshooting    Remote    Control    Circuit (Sheet 1 of 2)
Chart   10 Troubleshooting   Remote   Control   Circuit (Sheet 2 of 2)
Chart   11 Troubleshooting     Continuity (Sheet 1 of 1)
Chart   12 Troubleshooting    Continuity (Sheet 1 of 1)
Chart   13 Troubleshooting     Continuity (Sheet 1 of 1)
Chart   14 Troubleshooting    Continuity (Sheet 1   of 1)
Section IV. MAINTENANCE PROCEDURES - TM-11-5820-890-30-4_944
13-17. REPLACEMENT OF HEAT SINK ASSEMBLY (8A1)
Figure 13-2. Power Supply Adapter (Front and Bottom Views)
13-18. REPLACEMENT Tools: OF POWER SUPPLY ADAPTER CHASSIS (8A2)
13-19. REPLACEMENT OF INSTRUCTION PLATE
13-20. Tools: REPLACEMENT OF SEAL SCREW
13-21. REPLACEMENT OF J3 OR J4 CONNECTOR
INSTALLATION - TM-11-5820-890-30-4_951
13-22. REPLACEMENT OF J5 CONNECTOR
INSTALLATION - TM-11-5820-890-30-4_953
13-23. REPLACEMENT OF P1 CONNECTOR
INSTALLATION - TM-11-5820-890-30-4_955
13-24. REPLACEMENT OF SEALING GUIDE PIN
13-25. REPLACEMENT OF J2 CONNECTOR
INSTALLATION - TM-11-5820-890-30-4_958
13-26. REPLACEMENT OF LCL/RMT ROTARY SWITCH (8A2S1)
Figure 13-5. Power Supply Adapter (Rear View) Without Rear Access Cover
13-27. REPLACEMENT OF CR1 DIODE
13-28. REPLACEMENT OF CR3 OR CR4 DIODE
INSTALLATION - TM-11-5820-890-30-4_963
13-29. REPLACEMENT OF CR3 AND CR4 DIODE ANGLE BRACKET
INSTALLATION - TM-11-5820-890-30-4_965
13-30. Tools: TM 11-5820-890-30-4 REPLACEMENT OF TWO-WIRE TRANSIENT PROTECTION CIRCUIT CARD ASSEMBLY (8A2A1)
Figure 13-6. Power Supply Adapter (Bottom View) Without Heat Sink Assembly
13-31. REPLACEMENT OF DIODE CIRCUIT CARD ASSEMBLY (8A2A2)
13-32. REPLACEMENT OF TB1 TERMINAL BOARD.
13-33. REPLACEMENT OF CR2 DIODE ON K1 RELAY
13-34. REPLACEMENT OF K1 RELAY
13-35. REPLACEMENT OF CB1 CIRCUIT BREAKER
13-36.   REPLACEMENT OF LAMP HOLDER FOR DS1 LAMP
13-37. REPLACEMENT OF E1 OR E2 BINDING POST
13-38. REPLACEMENT OF J1 CONNECTOR
INSTALLATION - TM-11-5820-890-30-4_976
13-39. REPLACEMENT OF REAR ACCESS COVER ASSEMBLY
Figure 13-7. Rear Access Cover Assembly on Power  Supply Adapter
INSTALLATION - TM-11-5820-890-30-4_979
INSTALLATION Cont - TM-11-5820-890-30-4_980
13-40. REPLACEMENT OF POWER SUPPLY ADAPTER CHASSIS ASSEMBLY
Figure 13-9. Power Supply Adapter Chassis Assembly (Front View).
REMOVAL Cont - TM-11-5820-890-30-4_983
Figure 13-10. Power Supply Adapter Chassis Assembly (Bottom View) Without Heat Sink Assembly
REMOVAL Cont - TM-11-5820-890-30-4_985
Figure 13-11. Power Supply Adapter Chassis Assembly (Rear View) Without Rear Access Cover
REMOVAL Cont - TM-11-5820-890-30-4_987
INSTALLATION - TM-11-5820-890-30-4_988
INSTALLATION Cont - TM-11-5820-890-30-4_989
INSTALLATION Cont - TM-11-5820-890-30-4_990
INSTALLATION Cont - TM-11-5820-890-30-4_991
13-41. REPLACEMENT OF WIRING IN POWER SUPPLY ADAPTER CHASSIS (8A2)
Section V. PREPARATION FOR STORAGE OR SHIPMENT - TM-11-5820-890-30-4_993
Figure 13-12. Packing Static Sensitive Modules
CHAPTER 14 TRAY, BATTERY CY-8664/VRC MAINTENANCE INSTRUCTIONS
Section Il. REPAIR PARTS, SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT
Section Ill. TROUBLESHOOTING PROCEDURES - TM-11-5820-890-30-4_998
Figure 14-1. Battery Tray Test Setup
Step 1. BATTERY TRAY CHECK.
Figure 14-2. Battery Tray Test Points
14-13. EXPLANATION OF SYMBOLS AND NOTES
CHART 1 Troubleshooting   DS1   lamp (Sheet 1 of 1)
CHART 2 Troubleshooting Battery Tray (Sheet 1 of 3)
CHART 2 Troubleshooting Battery Tray (Sheet 2 of 3)
CHART 2 Troubleshooting Battery (Sheet 3 of 3)
CHART 3 Troubleshooting DS1 Lamp (Sheet 1 of 6)
CHART 3 Troubleshooting DS1 Lamp (Sheet 2 of 6)
CHART 3 Troubleshooting DS1 Lamp (Sheet 3 of 6)
CHART 3 Troubleshooting DS1 Lamp (Sheet 4 of 6)
CHART 3 Troubleshooting DS1 Lamp (Sheet 5 of 6)
CHART 3 Troubleshooting DS1 Lamp (Sheet 6 of 6)
Section IV. MAINTENANCE    PROCEDURES
14-18. VISUAL INSPECTION OF BATTERY TRAY ASSEMBLY
14-19. REPLACEMENT OF MOUNTING PLATE
14-20. REPLACEMENT OF BATTERY TRAY CIRCUIT CARD ASSEMBLY (12A1A1)
14-20. REPLACEMENT OF BATTERY TRAY CIRCUIT CARD ASSEMBLY (12A1A1). Cont
14-21. REPLACEMENT OF CONNECTOR BOARD CIRCUIT CARD ASSEMBLY (12A1A2) AND P1 CONNECTOR
14-22. REPLACEMENT : OF R1 RESISTOR
14-23. REPLACEMENT OF VR1 ZENER DIODE
14-24. REPLACEMENT OF J1 CONNECTOR
14-25.. REPLACEMENT OF U1 VOLTAGE REGULATOR
INSTALLATION - TM-11-5820-890-30-4_1023
14-26. REPLACEMENT OF TERMINAL LUG
14-27 Tools: REPLACEMENT OF WIRES
14-27. REPLACEMENT OF WIRES
14-28. REPLACEMENT OF DS1 LAMP HOLDER
14-30. Tools: REPLACEMENT OF S1 PUSHBUTTON SWITCH
14-31. REPLACEMENT OF BATTERY TRAY CHASSIS
14-31. REPLACEMENT OF BATTERY TRAY CHASSIS. Cont - TM-11-5820-890-30-4_1030
14-31. REPLACEMENT OF BATTERY TRAY CHASSIS. Cont - TM-11-5820-890-30-4_1031
14-32. REPLACEMENT OF BATTERY BOX GASKET
14-33. REPLACEMENT OF THREADED SCREW INSERTS. Cont
Figure   14-7.   Threaded  Screw Insert Replacement
Section V. PREPARATION FOR STORAGE OR SHIPMENT - TM-11-5820-890-30-4_1035
14-35. PACKING STATIC SENSITIVE MODULES. Cont
CHAPTER 15 MOUNTING BASE, ELECTRICAL EQUIPMENT MAINTENANCE   INSTRUCTIONS
Section Il. REPAIR PARTS, SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT - TM-11-5820-890-30-4_1039
Figure 15-2. Electrical Connector Assembly Schematic Diagram
Figure 15-3. Electrical Connector Assembly (Exploded View)
Section IV. MAINTENANCE PROCEDURES - TM-11-5820-890-30-4_1042
15-9. REPLACEMENT OF ACCESS COVER
15-10. REPLACEMENT OF CONNECTOR CASE
15-10. REPLACEMENT OF CONNECTOR CASE. Cont - TM-11-5820-890-30-4_1045
15-10. REPLACEMENT OF CONNECTOR CASE. Cont - TM-11-5820-890-30-4_1046
15-11. REPLACEMENT OF J1 , J2, J3, OR J4 CONNECTOR
15-12. REPLACEMENT OF J5 CONNECTOR
15-12. REPLACEMENT OF J5 CONNECTOR. Cont
15-13. REPLACEMENT OF FL1 FILTER
15-14. REPLACEMENT OF FL2 FILTER
15-14. REPLACEMENT OF FL2 FILTER. Cont
15-15. REPLACEMENT OF WIRING
15-15. REPLACEMENT OF WIRING. Cont - TM-11-5820-890-30-4_1054
15-15. REPLACEMENT OF WIRING. Cont - TM-11-5820-890-30-4_1055
15-16. REPLACEMENT OF THREADED SCREW INSERTS
Figure   15-4.   Threaded  Screw Insert Replacement
15-17. REPLACEMENT OF FILTER EMI-CCA
Section V. PREPARATION FOR STORAGE OR SHIPMENT - TM-11-5820-890-30-4_1059
CHAPTER 16 LOUDSPEAKER-CONTROL UNIT, LS-671/VRC MAINTENANCE INSTRUCTIONS
Figure 16-1. Loudspeaker and External Components
Section II. REPAIR PARTS, SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT
EQUIPMENT PRESETS
Step 1. INPUT POWER CHECK
Step 2. VOLUME CONTROL CHECK. Cont
16-10. TROUBLESHOOTING
Figure 16-3. Speakor CCA Test Points
16-12. EXPLANATION OF SYMBOLS AND NOTES
Chart   1 Troubleshooting DS1 POWER Indicator Lamp Circuit (Sheet 1 of 3)
Chart   1 Troubleshooting DS1 POWER Indicator Lamp Circuit (Sheet 2 of 3)
Chart   1 DS1 POWER Indicator Lamp Circuit (Sheet 3 of 3)
Chart   2 Troubleshooting ON/OFF Switch (CB1) (Sheet 1 of 1)
Chart   3 Troubleshooting SW +27.5 V dc Power Circuit (Sheet 1 of 1)
Chart   4 Troubleshooting Speaker Circuit (Sheet 1 of 3)
Chart   4 Troubleshooting Speaker Circuit (Sheet 2 of 3)
Chart   4 Troubleshooting Speaker Circuit (Sheet 3 of 3)
Chart   5 Troubleshooting Handset Circuitry (Sheet 1 of 1)
Chart   6 Troubleshooting Speaker (Sheet 1 of 1)
Chart   7 Troubleshooting Speaker (Sheet 1 of 1)
Chart   8 Troubleshooting PTT Circuit (Sheet 1 of 1)
Chart   9 Troubleshooting Mute Circuit (Sheet 1 of 1)
Chart   10 Troubleshooting MIC Audio Circuit (Sheet 1 of 1)
Section IV. MAINTENANCE PROCEDURES - TM-11-5820-890-30-4_1083
16-17. REPLACEMENT OF REAR COVER ASSEMBLY (15A1)
16-18. REPLACEMENT OF CASE/FLEXIBLE CABLE ASSEMBLY
16-18. REPLACEMENT OF CASE/FLEXIBLE CABLE ASSEMBLY. Cont
16-19. Tools: REPLACEMENT OF LOUDSPEAKER
16-20. REPLACEMENT OF ON/OFF SWITCH (CB1)
16-21. Tools: REPLACEMENT OF POWER LAMP HOLDER (DS1)
Section V. PREPARATION FOR STORAGE OR SHIPMENT - TM-11-5820-890-30-4_1090
CHAPTER 17 FILL DEVICE, ECCM MX-18290/VRC MAINTENANCE INSTRUCTIONS
Section Il. REPAIR PARTS, SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT - TM-11-5820-890-30-4_1093
Step 1. LOADING FILL DEVICE FROM ANOTHER FILL DEVICE
Fill Device Connected to Fill Device (Using Fill Cable)
Step 2. LOADING FH DATA (LOCAL FILL) INTO RT (RECEIVER-TRANSMITTER)
Figure 17-2. RT Test Setup
Section IV. MAINTENANCE PROCEDURES.
APPENDIX A REFERENCES - TM-11-5820-890-30-4_1100
REFERENCES Cont
APPENDIX B TORQUE   REQUIREMENTS
APPENDIX C COMPONENTS OF END ITEM AND BASIC ISSUE ITEMS LISTS FOR MAINTENANCE GROUP OA-9297/GRC
Section Il. COMPONENTS OF END ITEM LIST FOR MAINTENANCE GROUP OA-9297/GRC
Figure C-1. Maintenance Group OA-9297/GRC
Section Ill. COMPONENTS OF END ITEM LIST FOR INTERCONNECTING DEVICE J-4501/GRC
Section Ill. COMPONENTS OF END ITEM LIST FOR INTERCONNECTING DEVICE J-4501/GRC (Cont)
Figure C-2. Interconnecting Device J-4501/GRC (Sheet 1 of 7)
Figure C-2. Interconnecting Device J-4501/GRC (Sheet 2 of 7)
Figure C-2. Interconnecting Device J-4501/GRC (Sheet 3 of 7)
Figure C-2. Interconnecting Device J-4501/GRC (Sheet 4 of 7)
Figure C-2. Interconnecting Device J-4501/GRC (Sheet 5 of 7)
Figure C-2. Interconnecting Device J-4501/GRC (Sheet 6 of 7)
Figure C-2. Interconnecting Device J-4501/GRC (Sheet 7 of 7)
Section IV. COMPONENTS OF END ITEM LIST FOR TOOL KIT, ELECTRONIC EQUIPMENT A3018715-1
National Stock Number - TM-11-5820-890-30-4_1117
National Stock Number - TM-11-5820-890-30-4_1118
Figure C-3. Electronic Equipment Tool Kit (Sheet 1 of 3)
Figure C-3. Electronic Equipment Tool Kit (Sheet 2 of 3)
Figure C-3. Electronic Equipment Tool Kit (Sheet 3 of 3)
Section V. COMPONENTS OF END ITEM LIST FOR PARTS KIT, ELECTRONIC EQUIPMENT A3018712-1
Figure C-4. Electronic Equipment Parts Kit
Section VI. BASIC ISSUE ITEMS
APPENDIX D EXPENDABLE/DURABLE SUPPLIES AND MATERIALS
APPENDIX E. GLOSSARY Section I. ABBREVIATIONS
ABBREVIATIONS -cont - TM-11-5820-890-30-4_1129
ABBREVIATIONS -cont - TM-11-5820-890-30-4_1130
ABBREVIATIONS -cont - TM-11-5820-890-30-4_1131
Section Il. UNUSUAL TERMS
figure FO-4. RT AUDIO TRANSMIT SIGNAL PATH FUNCTIONAL BLOCK DIAGRAM
FIGURE FO-5. RT DATA RECEIVE SIGNAL PATH FUNCTIONAL BLOCK DIAGRAM
FIGURE FO-6. RT DATA TRANSMIT SIGNAL PATH FUNCTIONAL BLOCK DIAGRAM
FIGURE FO-7. RT PRIMARY CONTROL SIGNALS
FIGURE FO-8. RT SELF-TEST SIGNAL PATH FUNCTIONAL BLOCK DIAGRAM
FIGURE FO-9. RT RETRANSMIT SIGNAL PAT FUNCTIONAL BLOCK DIAGRAM
FIGURE FO-10. RT REMOTE CONTROL RECEIVE SIGNAL PATH FUNCTIONAL BLOCK DIAGRAM (SHEET 1 OF 2)
FIGURE FO-10. RT REMOTE CONTROL RECEIVE SIGNAL PATH FUNCTIONAL BLOCK DIAGRAM (SHEET 2 OF 2)
FIGURE FO-11. RT CIPER TEXT RECEIVE SIGNAL PATH FUNCTIONAL BLOCK DIAGRAM
FIGURE FO-11. RT CIPER TEXT TRANSMIT SIGNAL PATH FUNCTIONAL BLOCK DIAGRAM
FIGURE FO-13. RT PARENT BOARD CONNECTORS
FIGURE FO-14. AMPLIFIER - ADAPTER, VEHICULAR AM- 7239 / VRC SCHEMATIC DIAGRAM
FIGURE FO-14. AMPLIFIER - ADAPTER, VEHICULAR AM- 7239B / VRC SCHEMATIC DIAGRAM
FIGURE FO-16. POWER AMPLIFIER BLOCK DIAGRAM
FIGURE FO-17. CONTROL-MONITOR C-11291 / VRC SCHEMATIC DIAGRAM
FIGURE FO-18. CONTROL-MONITOR PARENT BOARD AND DISPLAY BOARD
FIGURE FO-19. TEST ADAPTER SCHEMATIC DIAGRAM
FIGURE FO-20. SCHEMATIC DIAGRAM
FIGURE FO-21. SCHEMATIC DIAGRAM
FIGURE FO-22. SCHEMATIC DIAGRAM
FIGURE FO-23. SCHEMATIC DIAGRAM
FIGURE FO-24. RCU SPEAKER OPERATION FUNCTIONAL BLOCK DIAGRAM
FIGURE FO-25. SCHEMATIC DIAGRAM
FIGURE FO-26. SCHEMATIC DIAGRAM
FIGURE FO-27. FILL OPERATION SIGNAL PATH FUNCTIONA BLOCK DIAGRAM
FIGURE FO-28. POWER SUPPLY ADAPTER VRC SCHEMATIC DIAGRAM
FIGURE FO-29. BATTERY TRAY SCHEMATIC DIAGRAM
FIGURE FO-30. LOUDSPEAKER - CONTROL UNIT SCHEMATIC DIAGRAM
ALPHABETICAL INDEX
ALPHABETICAL INDEX -CONT - TM-11-5820-890-30-4_1166
ALPHABETICAL INDEX -CONT - TM-11-5820-890-30-4_1167
ALPHABETICAL INDEX -CONT - TM-11-5820-890-30-4_1168

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