CHAPTER 1. INTRODUCTION
Figure 1-1. Test Set, right front three quarter view with shipping dimensions
MajorAssemblies and Components
Figure 1-3. Test set, side view
Figure 1-4. Wiring Diagram
Tabulated Data
Figure 1-5. Schematic (Model A427).
Figure 1-5.1. Schematic (Model A427B).
Figure 1-6. Base Plan (Model A427).
Figure 1-6.1. Base Plan (Model A427B).
Difference in Models
CHAPTER 2. OPERATING INSTRUCTIONS
Figure 2-1. Control panel
Figure 2-2. Terminal bucket mounting.
Table 2-1. Input Connections
Figure 2-3. Starting instructions.
Figure 2-4. Stopping instructions
Section Il. OPERATION UNDER UNUSUAL CONDITIONS
CHAPTER 3. OPERATOR/CREW MAINTENANCE INSTRUCTIONS
Troubleshooting
Figure 3-1. Fuse Location
Figure 3-2. Voltage receptacles.
Table 3-2. Troubleshooting (Cont'd)
Filter Capacitors
CHAPTER 4. ORGANIZATIONAL MAINTENANCE INSTRUCTIONS
Figure 4-1. Control panel
Section V. TROUBLESHOOTING
Section VI. RADIO INTERFERENCE
Figure 4-2. Suppression filter location removal and installation.
Section VII. MAINTENANCE OF THE HOUSING, DOORS AND GRILLS
Figure 4-3. Grills, removal and installation
Section VIII. MAINTENANCE OF THE POWER ABSORBER
Figure 4-4. Wind switch location
Figure 4-7. Terminal studs, removal and installation.
Control Transformer
CHAPTER 5. DIRECT SUPPORT MAINTENANCE INSTRUCTIONS
Figure 5-1. Rectifier removal and installation.
Figure 5-2. Housing, removal and installation.
Figure 5-3. Wind switch removal and installation.
Figure 6-4. Rectifier, removal and installation.
Figure 5-5. Variable transformer, removal and installation.
Figure 5-6. Voltage sensing module, removal and installation.
Figure 5-7. Contactor, removal and installation.
Figure 5-8. Control transformer, removal and installation.
Figure 5-9. Power absorbers, removal and installation.
Figure 5-10. Fan and motor, removal and installation.
CHAPTER 6. REPAIR OF THE HOUSING
Figure 7-1. Types of multimeters.
Figure 7-2. "Zeroing" the AN/URM-1O5 meter.
Figure 7-3. "Zeroing" the TS-352B/U meter.
Figure 7-4. "Zeroing" the Simpson 160 meter.
Figure 7-5. TS-352 continuity test.
Figure 7-6. Testing for shorts.
Figure 7-8. Reading the ohm scale.
CHAPTER 8. ADMINISTRATIVE STORAGE
REFERENCES
APPENDIX B. BASIC ISSUE ITEMS LIST , ITEM S TROOP INSTALLED OR AUTHORIZED LIST AND REPAIR PARTS AND SPECIAL TOOLS LIST
Recoverability code
How to Locate Repair Parts
Figure B-1. Housing, doors, and grills.
Figure B-1. Housing, doors, and grills. - Continued
Figure B-2. Control panel, rectifier, and variable transformer.
Figure B-2. Control panel, rectifier, and variable transformer. - Continued
Figure B-2. Control panel, rectifier, and variable transformer. - Continued
Figure B-3. Sensing module, control transformer, and terminal board (Sheet 1 of 2).
Figure B-3. Sensing module, control transformer, and terminal board (Sheet 2 of 2).
Figure B-3. Sensing module, control transformer, and terminal board - Continued
Figure B-3. Sensing module, control transformer, and terminal board - Continued
Figure B-3. Sensing module, control transformer, and terminal board - Continued
Figure B-4. Power absorber, fan motor, and load module (Sheet 1 of 2)
Figure B-4. Power absorber, fan motor, and load module (Sheet 2 of 2).
Figure B-4. Power absorber, fan motor, and load module - Continued
Figure B-4. Power absorber, fan motor, and load module - Continued
Figure B-4. Power absorber, fan motor, and load module - Continued
SECTION VII - INDEX-NATIONAL STOCK NUMBER AND REFERENCE NUMBER CROSS-REFERENCE TO FIGURE AND ITEM NUMBER
INDEX - CROSS REFERENCE PART NUMBER TO FIGURE AND ITEM NUMBER
INDEX - CROSS REFERENCE PART NUMBER TO FIGURE AND ITEM NUMBER - Continued
APPENDIX C. MAINTENANCE ALLOCATION CHART
Section II. MAINTENANCE ALLOCATION CHART
Section II. MAINTENANCE ALLOCATION CHART - Continued
Figure 1-1. Test Set, right front three quarter view with shipping dimensions
MajorAssemblies and Components
Figure 1-3. Test set, side view
Figure 1-4. Wiring Diagram
Tabulated Data
Figure 1-5. Schematic (Model A427).
Figure 1-5.1. Schematic (Model A427B).
Figure 1-6. Base Plan (Model A427).
Figure 1-6.1. Base Plan (Model A427B).
Difference in Models
CHAPTER 2. OPERATING INSTRUCTIONS
Figure 2-1. Control panel
Figure 2-2. Terminal bucket mounting.
Table 2-1. Input Connections
Figure 2-3. Starting instructions.
Figure 2-4. Stopping instructions
Section Il. OPERATION UNDER UNUSUAL CONDITIONS
CHAPTER 3. OPERATOR/CREW MAINTENANCE INSTRUCTIONS
Troubleshooting
Figure 3-1. Fuse Location
Figure 3-2. Voltage receptacles.
Table 3-2. Troubleshooting (Cont'd)
Filter Capacitors
CHAPTER 4. ORGANIZATIONAL MAINTENANCE INSTRUCTIONS
Figure 4-1. Control panel
Section V. TROUBLESHOOTING
Section VI. RADIO INTERFERENCE
Figure 4-2. Suppression filter location removal and installation.
Section VII. MAINTENANCE OF THE HOUSING, DOORS AND GRILLS
Figure 4-3. Grills, removal and installation
Section VIII. MAINTENANCE OF THE POWER ABSORBER
Figure 4-4. Wind switch location
Figure 4-7. Terminal studs, removal and installation.
Control Transformer
CHAPTER 5. DIRECT SUPPORT MAINTENANCE INSTRUCTIONS
Figure 5-1. Rectifier removal and installation.
Figure 5-2. Housing, removal and installation.
Figure 5-3. Wind switch removal and installation.
Figure 6-4. Rectifier, removal and installation.
Figure 5-5. Variable transformer, removal and installation.
Figure 5-6. Voltage sensing module, removal and installation.
Figure 5-7. Contactor, removal and installation.
Figure 5-8. Control transformer, removal and installation.
Figure 5-9. Power absorbers, removal and installation.
Figure 5-10. Fan and motor, removal and installation.
CHAPTER 6. REPAIR OF THE HOUSING
Figure 7-1. Types of multimeters.
Figure 7-2. "Zeroing" the AN/URM-1O5 meter.
Figure 7-3. "Zeroing" the TS-352B/U meter.
Figure 7-4. "Zeroing" the Simpson 160 meter.
Figure 7-5. TS-352 continuity test.
Figure 7-6. Testing for shorts.
Figure 7-8. Reading the ohm scale.
CHAPTER 8. ADMINISTRATIVE STORAGE
REFERENCES
APPENDIX B. BASIC ISSUE ITEMS LIST , ITEM S TROOP INSTALLED OR AUTHORIZED LIST AND REPAIR PARTS AND SPECIAL TOOLS LIST
Recoverability code
How to Locate Repair Parts
Figure B-1. Housing, doors, and grills.
Figure B-1. Housing, doors, and grills. - Continued
Figure B-2. Control panel, rectifier, and variable transformer.
Figure B-2. Control panel, rectifier, and variable transformer. - Continued
Figure B-2. Control panel, rectifier, and variable transformer. - Continued
Figure B-3. Sensing module, control transformer, and terminal board (Sheet 1 of 2).
Figure B-3. Sensing module, control transformer, and terminal board (Sheet 2 of 2).
Figure B-3. Sensing module, control transformer, and terminal board - Continued
Figure B-3. Sensing module, control transformer, and terminal board - Continued
Figure B-3. Sensing module, control transformer, and terminal board - Continued
Figure B-4. Power absorber, fan motor, and load module (Sheet 1 of 2)
Figure B-4. Power absorber, fan motor, and load module (Sheet 2 of 2).
Figure B-4. Power absorber, fan motor, and load module - Continued
Figure B-4. Power absorber, fan motor, and load module - Continued
Figure B-4. Power absorber, fan motor, and load module - Continued
SECTION VII - INDEX-NATIONAL STOCK NUMBER AND REFERENCE NUMBER CROSS-REFERENCE TO FIGURE AND ITEM NUMBER
INDEX - CROSS REFERENCE PART NUMBER TO FIGURE AND ITEM NUMBER
INDEX - CROSS REFERENCE PART NUMBER TO FIGURE AND ITEM NUMBER - Continued
APPENDIX C. MAINTENANCE ALLOCATION CHART
Section II. MAINTENANCE ALLOCATION CHART
Section II. MAINTENANCE ALLOCATION CHART - Continued
