Agilent Technologies 6010a Overall Troubleshooting Procedure, A3 Front Panel Assembly Rear View

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d.Lift the A1 board up and toward the rear, then remove the wires from the front panel switch A3S1.

 

A1 Designator

Wire color

A3S1 Position (Rear View)

 

A

white/gray

Upper right

 

B

gray

Upper left

 

C

white/brown/gray

Lower left

 

D

white/red/gray

Lower right

 

 

 

 

 

A3 FRONT PANEL ASSEMBLY

S1

 

 

 

 

 

 

REAR VIEW

 

B-- --A

 

 

 

 

C-- --D

 

 

 

 

 

 

Install the A1 board by reversing the above steps. Be careful to follow the wire color code mentioned above.

Overall Troubleshooting Procedure

Perform the troubleshooting and repair procedures which follow only if you are trained in equipment service and are aware of the danger from fire and electrical-shock hazards. Some of the procedures include removing the unit's protective covers which may expose you to potentially lethal electrical shock. Whenever possible, make test connections and perform service with the power removed.

After performing the Initial Troubleshooting Procedures, focus on developing a logical approach to locating the source of the trouble. The underlying strategy for the troubleshooting procedures here is to guide you to the faulty circuit nodes which have improper signals or voltages. It relies on you to identify the particular functional circuit to troubleshoot from symptom tables and by understanding how the unit works. It then relies on you to discover the defective component or components which cause the faulty circuit nodes. So, read the BLOCK DIAGRAM overview in Chapter 4 and read the functional circuit descriptions for the circuits that you suspect may be defective. Then return to this section for help finding the faulty circuit nodes.

Table 3-1 gives the signals for each of the test points on the control board test connector. This connector is provided in service kit P/N 5060-2865. The measurements given here include bias and reference voltages as well as power supply status signals and waveform information. To troubleshoot the power supply the A4 power FET board and A2 control board can be raised out of the unit using extender boards and cables provided in service kit P/N 5060-2865.

The A4 power FET board should only be raised on its extender when using the Main Troubleshooting Setup; NEVER when the unit is operated with its normal ( ≈ 300Vdc ) bus voltage. To do so can cause damage to the unit and is a shock hazard.

Table 3-2 provides troubleshooting information based on the status of the PWM-ON and PWM-OFF signals which drive the PFETs. This table is used for no-output failures.

Tables 3-3 and 3-4 give measurements for the test points on the A3 front panel board and possible failure symptoms respectively.

Table 3-5 describes possible symptoms for overall performance failures of the power supply. It is necessary to have a properly working front panel before using this table.

Chapter 6 contains schematic diagrams and voltage levels, and component location diagrams to help you locate components and test points.

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Contents Autoranging DC Power Supply Agilent Models 6010A, 6011A Certification Safety Summary Safety Symbol Definitions Table of Contents Replaceable Parts Troubleshooting Circuit DiagramsSafety Considerations ScopeManual Revisions Item DescriptionCalibration Procedure IntroductionTest Equipment Required Operation Verification TestsType Required Characteristics USE Recommended Model Test Equipment Required4KVA Initial Setup Calibration ProcedureMON Iout Display SettingsVout Common Mode Setup CR4 Performance TestsMeasurement Techniques Current-Monitoring Resistor Setup Basic Test Setup Constant Voltage CV TestsPage RMS Measurement Test Setup, CV Pard Test Peak-To-Peak Measurement Test Setup, CV Pard Test 6012B 6015A 6010A 6011ANot Applicable Load Transient Recovery Waveform 6010A 6011A 6012B 6015AConstant Current CC Tests Page CC Pard Test Setup Troubleshooting Initial Troubleshooting ProceduresControl Board Test Connector, A2J7 VdcRepair and Replacement Electrostatic ProtectionA2 Control Board Removal A4 FET Board RemovalA1 Main Board Removal A5 Diode Board RemovalA3 Front Panel Board Removal A3 Front Panel Assembly Rear View Overall Troubleshooting ProcedureA1 Designator Wire color A3S1 Position Rear View Using the Tables Main Troubleshooting SetupMain Troubleshooting Setup Modified Mains Cord Set For Troubleshooting Troubleshooting No-Output Failures Front Panel TroubleshootingA2J7-26 A2J7-25 Performance Failure Symptoms Troubleshooting Bias SuppliesA3 Front Panel Board Failure Symptoms Node + Node + N0DEPower Section Blocks Troubleshooting AC-Turn-on CircuitsTroubleshooting PWM & Clock AC FaultRelay Enable + OUTTroubleshooting DC-To-DC Converter Troubleshooting Down ProgrammerPWM-ON PWM-OFFWaveforms Troubleshooting CV Circuit Troubleshooting CC CircuitON/OFF OFFTroubleshooting OVP Circuit SET Voltage Setup MeasurementPage System Description Autoranging PowerOverview Regulation & Control Subsystem A and 6015A Simplified Schematic A and 6012B Simplified Schematic Input from Output to Quick Reference Guide to Major Circuits Major FunctionOperation PWM DP DP PWMInput Power Subsystem Protection SubsystemFront Panel Board DC Power Conversion SubsystemOutput Subsystem Page Simplified Front Panel Schematic Replaceable Parts Reference DesignatorsOrdering Information Description AbbreviationsMain Board Assembly CB1 CR1CR2 CR5VR1 A1 Mechanical6010A C37 6010A, 6011A, 6015A Not Used Not Used Not Used Page Not Used VR6 VR2VR5 TB1 TB2Not Used VR1 VR2 Agilent ModelTS1 Drvr TTL NOR DualFET N-CHAN CR3CR6 A5 Mechanical A6 Mechanical Chassis Electrical Not Used Component Location and Circuit Diagrams Schematic Diagram NotesIndicate number of paths represented by the line Top View, Top Covers Removed Main Board A1 and Filter Board A6 Component Location Control Board A2 Component Location Front Panel Board A3 Component Location FET Board A4 Component Location Diode Board A5 Component Location Page Page Page Page Option 002 Hardware SpecificationsGeneral Information Table A-1. Specifications, Option Remote Programming Input Compliance Voltage ± Current Programming EnableStatus Indicators AccuracyRemote Trip and Remote Reset Timing Power-on PresetMaximum Output Voltage logic high + On State logic lowTable A-1. Specifications, Option Pulse Timing Bias Supplies DC Output Ratings 25C ±Short Circuit Output Current Pard TypicalInstallation Connector Assembly ProcedureFigure A-1. Mating Connector Assembly OperationLocal/Remote Programming Resistance Voltage or Current Remote Resistance Programming Figure A-4. Calculating Value of Series Dropping ResistorFigure A-5. Remote Resistance Programming Remote Monitoring 101102 Status IndicatorsRemote Control 103 Remote ResetOvervoltage Power-On Preset 104105 AC Dropout Buffer CircuitMultiple Supply System Shutdown 106 MaintenanceBias Supplies 107 Troubleshooting Resistance and Voltage ProgrammingTroubleshooting Current Programming Figure A-11. Troubleshooting Current Programming of CV Mode 108Figure A-13. Troubleshooting Status Indicators 109110 Table A-3. Replacement Parts 111112 VR9 113114 Logic Symbols and DefinitionsIndicator and Qualifier Symbols Schematic Diagram Notes 115Schematic Notes Figure A-15. Option 002 Board, Component Location 116Figure A-16. Option 002 Board, Schematic Diagram 117 Page 119 Model 6010A ChangeModel 6011A Change 120 Model 6012B ChangeModel 6015A Change Delete 121122 123 124 DS5 125126
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6015A, 6012B, 6011A, 6010a specifications

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