Agilent 6031A Service Manual - Comprehensive Guide for Power Supply Models

SERVICE MANUAL

AUTORANGING

SYSTEM DC POWER SUPPLY

AGILENT MODELS 6030A, 6031A,

6032A and 6035A

FOR INSTRUMENTS WITH SERIAL NUMBERS Agilent Model 6030A; Serials US38320301 and above Agilent Model 6031A; Serials US38310376 and above Agilent Model 6032A; Serials US38321026 and above Agilent Model 6035A; Serials US38320281 and above

For instruments with higher serial numbers, a change page may be included.

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Agilent Part No. 5959-3344	Printed in USA
Microfiche Part No. 5959-3345	September, 2000

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Agilent Technologies 6031A, 6030A service manual 6032A and 6035A, Agilent Part No Microfiche Part No

Contents

Agilent Part No Microfiche Part No 6032A and 6035A Certification Safety Summary Symbol Description Safety Symbol DefinitionsPrinting History Table of Contents Principles of Operation Component Location and Circuit DiagramsEeprom Replaceable Parts Blank Front Panel Option 125 L00 Vac Input Power Option 119 Introduction Firmware Revisions Manual RevisionsItem Description Calibration and Verification Calibration ProcedureIntroduction Test Equipment Required Test Equipment Required Type Required Characteristics USE Recommended Model CR4 Initial Setup Voltage Monitor Zero Calibration Common Mode CalibrationRemote Readback Zero Calibration Disp a Common Mode Setup Voltage Monitor and Remote Readback Full Scale Calibration Constant Voltage Full Scale Calibration Current Monitor Zero Calibration Constant Voltage Zero CalibrationConstant Current Zero Calibration Constant Current Full Scale Calibration Current Monitor Full Scale Calibration Power Limit Calibration Performance Tests Resistance Programming Full Scale CalibrationMeasurement Techniques Constant Voltage CV Tests Current-Monitoring Resistor Setup Disp a Basic Test Setup Page RMS Measurement Test Setup, CV Pard Test Peak-To-Peak Measurement Test Setup, CV Pard Test Constant Current CC Tests Load Transient Recovery WaveformPage Page CC Pard Test Setup Initialization Procedure Initial Troubleshooting Procedures Troubleshooting Electrostatic Protection Repair and Replacement A4 FET Board Removal A2 Control Board Removal A8 Gpib Board Removal A5 Diode Board RemovalA3 Front-Panel Board Removal A1 Main Board Removal Gpib Section Troubleshooting Overall Troubleshooting ProcedureA1 Designator Wire color A3S1 Position Rear View Troubleshooting Isolation Troubleshooting Isolation Error Primary Interface TroubleshootingGo to Secondary SA Voltage and Current DAC Secondary Interface TroubleshootingNode Measurement Source Address Lines Data Lines Clock and Primary SA Waveforms Readback DAC Circuits Node Setup MeasurementReadback Multiplexer U20 Readback and Secondary SA Waveforms Primary SA Signature AnalysisFront Panel SA Secondary Signature Analyzer Test Setups Primary and Front Panel Signature Analyzer Test SetupsSecondary SA 00.04 00.02 00.01 00.00 Inputs Node Measurement Front Panel LED Display and Indicator DriversOutputs Current Display Voltage Display 1ABC Inputs Node MeasurementsC7AA Procedure Node Secondary Processor Signature Table Power Section Troubleshooting Main Troubleshooting Setup Main Troubleshooting Setup Troubleshooting No-Output Failures Modified Mains Cord Set For Troubleshooting Power Section Blocks Vdc Control Board Test Connector, A2J7 Status of FET On/Off-Pulses 10. Performance Failure SymptomsA2J7-26 A2J7-25 Troubleshooting DC-To-DC Converter Troubleshooting AC-Turn-On CircuitsInputs Node + Outputs Node + Inputs Node + A2J7-26PWM-ONA2J7-25PWM-OFF Troubleshooting Bias SuppliesOutputs Node Input Node + Waveforms A2C52 + ≈ + 25Vdc A1U4 Outputs Troubleshooting CV Circuit Troubleshooting Down ProgrammerON/OFF OFF Troubleshooting OVP Circuit Troubleshooting CC Circuit Outputs Troubleshooting PWM & ClockNode + External Vdc Inputs +OUT Outputs SET Voltage Vdc Node +Overrange Principles of Operation Address SwitchesGpib Board Primary Microprocessor Gpib Block Diagram Secondary Microprocessor IsolationDigital-to-Analog Converters Analog Multiplexer Front Panel Board Front-Panel Switches and Input PortAddress Latches and Decoders Volts and Amps Output Ports and Displays Front Panel Block Diagram OVP Adjust Control Mode IndicatorsPower Clear Power Mesh and Control Board FET Control Signals Timing Diagram Power MeshPage Control Board Page Page Power Mesh Block Diagram Control Board Block Diagram Reference Designators Replaceable Parts Description Abbreviations Ordering Information Main Board Assembly CR2 CR1DS1 A1 Mechanical VR1 Control Board Assembly Page Page Page Page Page Page VR5 VR2VR6 Front Panel Board TS1 FET Board CR3 Diode BoardCR5 CR6Page AC Input Filter Gpib Board Page IC RAM MCM6164C55 IC Eprom AM27512IC Uart MC68B50P IC Eeprom NMC9346 Output Board A8 MechanicalChassis Electrical CB1 100 Schematic Diagram Notes Component Location and Circuit Diagrams101 102 Top View, Top Covers Removed 103 Page 2B a Main Board A1 and Output Filter Component Location 105 2C a Main Board A1 and Output Filter Component Location 106 107 Component Location FET Board A4 Component Location 108 6A A/35A Diode Board A5 Component Location 6C a Diode Board A5 Component Location Gpib Board A8 Component Location 111 A Output Board A9 Component Location 112 Page Page Page Page 13A. Gpib Board Schematic Diagram 13B. Gpib Board Schematic Diagram Suggestions for Using Appendix a L00 Vac Input Power OptionGeneral Information Description Scope of Appendix a 120 121 122 123 6 Manual Changes 125 Blank Front Panel Option 126 Troubleshooting Isolation option 127 Agilent 6030A Test Record Performance Test Record Agilent 6030A Power Supply Page 1Test Facility Agilent 6030A 130 Performance Test Record Agilent 6030A Power Supply Page 2 Agilent 6031A Test Record Performance Test Record Agilent 6031A Power Supply Page 1Agilent 6031A 131 Current Programming Constant Current Tests Readback Performance Test Record Agilent 6031A Power Supply Page 2Load Effect 50.0A Source Effect 120A Agilent 6032A Test Record Performance Test Record Agilent 6032A Power Supply Page 1Agilent 6032A 133 Load Effect 16.5A Performance Test Record Agilent 6032A Power Supply Page 2Source Effect 50.0A 134 Agilent 6035A Test Record Performance Test Record Agilent 6035A Power Supply Page 1Agilent 6035A 135 Load Effect 2.0A Performance Test Record Agilent 6035A Power Supply Page 2Source Effect 5.0A 136 137 Manual Backdating 138 Change 139