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Army Medical Dental Chair (JSA-R)Dental Chair (JSA-R)DevelopmentTable of ContentsIntroductionCredit AwardedLesson AssignmentLesson 1: Perform Preventive Maintenance Checks and Services on the Dental ChairFigure 1-1. Dental chair components.Pedestal and Motor Assembly.Perform Preventive Maintenance Checks and ServicesFigure 1-2. Potentiometer programming dials.Lubricate.Figure 1-3. Floor plate assembly.Figure 1-4. Pantograph arms.Figure 1-5. Cradle assembly.Exercises, Lesson 1Exercises, Lesson 1-cont.Exercises, Lesson 1-cont.Exercises, Lesson 1-cont.Solutions to Exercises, Lesson 1Lesson AssignmentLesson 2: Isolate Malfunctions to Component Level in the Dental ChairFigure 2-1. Wiring chart for the JSA-R Dental Chair.Figure 2-2. Control board schematic for the JSA-R Dental Chair.Lowering the chair.Automatic Mode Circuit Description.Operate mode-cont.Isolate Malfunctions to the Component LevelIsolate Malfunctions to the Component Level-cont.Figure 2-3. Dental chair power cord.Isolate Malfunctions to the Component Level-cont.Isolate Malfunctions to the Component Level-cont.The automatic control switch is faulty.Exercises, Lesson 2Exercises, Lesson 2-cont.Exercises, Lesson 2-cont.Solutions to Exercises, Lesson 2Lesson AssignmentLesson 3: Remove and Replace or Repair Defective Components of the Dental ChairFigure 3-1. Doctor and assistant controls.Remove and Replace a Faulty Solid State Control BoardReplacing Base Motor (PLR-200)Figure 3-3. View of bellows with chair raised.Figure 3-5. PLR-200 wiring diagram.Figure 3-6. The PLA-200 precision lift.Figure 3-7. Switches "A" and "B" on PLR-200.Chair Is In DOWN Position and Will Not Raise.Replacing the Back Motor AssemblyFigure 3-8. Installing wood block.Replacing the Back Motor Assembly-cont.Replacing the Seat MotorReplacing the Seat Motor-cont.Replacing the Potentiometer Wiring HarnessReplacing the Potentiometer Wiring Harness-cont.Figure 3-12. View of toggle switch on junction box.Replacing the Potentiometer Wiring Harness-cont.Exercises, Lesson 3Exercises, Lesson 3-cont.Exercises, Lesson 3-cont.Solutions to Exercises, Lesson 3Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.
Army Medical
Dental Chair (JSA-R)Dental Chair (JSA-R)DevelopmentTable of ContentsIntroductionCredit AwardedLesson AssignmentLesson 1: Perform Preventive Maintenance Checks and Services on the Dental ChairFigure 1-1. Dental chair components.Pedestal and Motor Assembly.Perform Preventive Maintenance Checks and ServicesFigure 1-2. Potentiometer programming dials.Lubricate.Figure 1-3. Floor plate assembly.Figure 1-4. Pantograph arms.Figure 1-5. Cradle assembly.Exercises, Lesson 1Exercises, Lesson 1-cont.Exercises, Lesson 1-cont.Exercises, Lesson 1-cont.Solutions to Exercises, Lesson 1Lesson AssignmentLesson 2: Isolate Malfunctions to Component Level in the Dental ChairFigure 2-1. Wiring chart for the JSA-R Dental Chair.Figure 2-2. Control board schematic for the JSA-R Dental Chair.Lowering the chair.Automatic Mode Circuit Description.Operate mode-cont.Isolate Malfunctions to the Component LevelIsolate Malfunctions to the Component Level-cont.Figure 2-3. Dental chair power cord.Isolate Malfunctions to the Component Level-cont.Isolate Malfunctions to the Component Level-cont.The automatic control switch is faulty.Exercises, Lesson 2Exercises, Lesson 2-cont.Exercises, Lesson 2-cont.Solutions to Exercises, Lesson 2Lesson AssignmentLesson 3: Remove and Replace or Repair Defective Components of the Dental ChairFigure 3-1. Doctor and assistant controls.Remove and Replace a Faulty Solid State Control BoardReplacing Base Motor (PLR-200)Figure 3-3. View of bellows with chair raised.Figure 3-5. PLR-200 wiring diagram.Figure 3-6. The PLA-200 precision lift.Figure 3-7. Switches "A" and "B" on PLR-200.Chair Is In DOWN Position and Will Not Raise.Replacing the Back Motor AssemblyFigure 3-8. Installing wood block.Replacing the Back Motor Assembly-cont.Replacing the Seat MotorReplacing the Seat Motor-cont.Replacing the Potentiometer Wiring HarnessReplacing the Potentiometer Wiring Harness-cont.Figure 3-12. View of toggle switch on junction box.Replacing the Potentiometer Wiring Harness-cont.Exercises, Lesson 3Exercises, Lesson 3-cont.Exercises, Lesson 3-cont.Solutions to Exercises, Lesson 3Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.Appendix: Dental Chair Troubleshooting Guide-cont.
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