Agilent Technologies AGILENT MODELS 6023A and 6028A service manual CR5, DS1, DS5

Page 63

Table 5-5. A3 Front-Panel Board Parts List

Ref. Desig.

Agilent Model

Agilent Part Number

Description

 

 

ELECTRICAL PARTS

 

A3

6023A

06023-60020

Front-Panel Board Assembly

A3

6028A

06028-61020

Front-Panel Board Assembly

C1

All

0160-4807

Capacitor, fixed ceramic 33pF ±5% 100V

C2-4

All

0160-5422

Capacitor, fixed ceramic 0.047∝F ±20% 5OV

C5

All

0160-4805

Capacitor, fixed ceramic 47pF ±5% 100V

C6

All

0160-4835

Capacitor, fixed ceramic 0.1∝F ±10% 50V

C7

All

0160-0168

Capacitor, fixed ceramic 0.1/1F ±10% 200V

C8

All

0160-5893

Capacitor, fixed met 0.047∝F ±10% 100V

C9

All

0160-5422

Capacitor, fixed ceramic 0.047∝F ±20% 50V

C10

All

0160-4805

Capacitor, fixed ceramic 47pF ±5% 100V

C11

All

0160-4835

Capacitor, fixed ceramic 0.1∝F ±10% 50V

C12

All

0160-0168

Capacitor, fixed ceramic 0.1∝F ±10% 200V

C13

All

0160-5893

Capacitor, fixed ceramic 0.047∝F ±10% 100V

C14-15

All

0160-5422

Capacitor, fixed ceramic 0.047∝F ±20% 50V

C16

All

0160-4831

Capacitor, fixed ceramic 4700pF 10% 100V

C17

All

0160-5422

Capacitor, fixed ceramic 0.047∝F ±20% 50V

C80

All

0160-4835

Capacitor, fixed ceramic 0.1∝F ±10% 50V

CR1,2

All

1901-0033

Diode general purpose 180V 200mA

CR3,4

All

1901-0050

Diode switching 80V 200mA

CR5

All

1901-0033

Diode general purpose 180V 200mA

DS1-8

6023A

1990-0985

Display kit

DS1

6028A

1990-0681

Display, analog

DS2-4

6028A

1990-0540

Display, numeric

DS5

6028A

1990-0681

Display, analog

DS6-8

6028A

1990-0540

Display, numeric

DS9,10

All

1990-0951

LED, green

J1

All

1251-5055

Connector, post type 26-contacts

R1

All

0683-3925

Resistor, composition 3.9KΩ 5% 1/4W

R2

All

0683-6815

Resistor, composition 680Ω 5% 1/2W

R3

All

0683-2025

Resistor, composition 2KΩ 5% 1/4W

R4,5

6023A

 

See Chassis Electrical

R6

All

2100-1775

Termistor 5KΩ 5% 1-turn side adjust

R7

6023A

0757-0415

Resistor, fixed film 475Ω 1% 1/8W

R7

6028A

0698-4457

Resistor, fixed film 576Ω 1% 1/8W

R8

All

0683-1045

Resistor, fixed composition 100KΩ 5% 1/4W

R10-57

All

0683-2015

Resistor, fixed composition 200Ω 5% 1/4W

R58

All

0683-6215

Resistor, fixed composition 620Ω 5% 1/2W

R59

All

0757-0458

Resistor, fixed film 51.1KΩ 1% 1/8W

R60

All

0757-0270

Resistor, fixed film 249KΩ 1% 1/8W

R61,62

All

0683-5615

Resistor, fixed composition 560Ω 5% 1/4W

R63

All

0757-0458

Resistor, fixed film 51.1KΩ 1% 1/8W

R64

All

0757-0270

Resistor, fixed film 249KΩ 1% 1/8W

R65

All

0683-1045

Resistor, fixed composition 100KΩ 5% 1/4W

R66

All

0698-8498

Resistor, fixed film 1.02KΩ 0.1% 1/8W

R67

6023A

0699-0721

Resistor, fixed film 33KΩ 0.1% 1/8W

R67

6028A

0757-7929

Resistor, fixed film 9.09KΩ 1% 1/8W

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Contents Autoranging Certification Safety Summary Printing History Safety Symbol DefinitionsTable of Contents Replaceable Parts Scope TroubleshootingCircuit Diagrams Safety ConsiderationsItem Description Manual RevisionsOperation Verification Tests Calibration ProcedureIntroduction Test Equipment RequiredTest Equipment Required Type Required Characteristics USE Recommended Model1KVA Initial SetupMON Calibration ProcedureIout VoutPerformance Tests Measurement TechniquesCR7 Constant Voltage CV Tests Current-Monitoring Resistor SetupBasic Test Setup RMS Measurement Test Setup, CV Pard Test Peak-To-Peak Measurement Test Setup, CV Pard Test KHz Noise, CV Peak-to-Peak Pard 6023A 6028ALoad Transient Recovery Waveform Constant Current CC Tests CC Pard Test Setup Initial Troubleshooting Procedures TroubleshootingWAVEFORM/CONDITIONS Source Control Board Test Connector, A2J7PIN no Signal Name VdcElectrostatic Protection Repair and ReplacementA2 Control Board Removal A1 Main Board Removal A4 Power Mesh Board RemovalOverall Troubleshooting Procedure A3 Front-Panel Board RemovalMeasurement Using the TablesSetup NodeMain Troubleshooting Setup Main Troubleshooting SetupModified Mains Cord Set For Troubleshooting Front-Panel Troubleshooting Troubleshooting No-Output FailuresPWM-ON PWM-OFF Defective Check Functional Circuits A2J7-26 A2J7-25Board Node + Measurement Source Troubleshooting Bias SuppliesSymptoms Defective Circuit Check Components Symptoms Defective Check Functional Circuits BoardNode + Measurement SourceNode + N0DE Setup Measurement Power Section BlocksTroubleshooting AC-Turn-on Circuits Setup Measurement SourceTroubleshooting PWM & Clock Relay EnablePower Limit PWM-OFF Troubleshooting DC-To-DC Converter+ OUT PWM-ONTroubleshooting CC Circuit Troubleshooting CV CircuitTroubleshooting Down Programmer Troubleshooting OVP CircuitA4U4OUT Waveforms SET Voltage Vdc Node + Page Block Diagram Overview Autoranging PowerBlock Diagram Simplified Schematic Simplified Schematic Down Programmer DC-to-DC ConverterConstant-Voltage CV Circuit Pfet Control Signals Timing DiagramControl-Voltage Comparator Power-Limit ComparatorConstant-Current CC Circuit Overvoltage Protection OVP CircuitAC-Surge Dropout Detector Initial-Ramp CircuitPulse-Width Modulator PWM Bias Voltage DetectorDisplay Circuits Second-Delay CircuitPage Reference Designators Replaceable PartsDescription Abbreviations Ordering InformationCR3 Electrical PartsCR1 CR2XA2P1 XA2P2Mechanical Parts Control Board Assembly CR3 Page Page Page VR3 VR4VR5 CR5 DS1DS5 IC A/D Cmos 3-1/2 DGT VR1VR2 Pfet NPN SIChassis Electrical TS1A4 Board Mechanical Parts A1TB1A2 Board Mechanical Parts A3 Board Mechanical PartsOption 240 240V Operation Option 220 220V OperationComponent Location and Circuit Diagrams Schematic Diagram Notes Pin locations for other semi-conductors are shown below Top View, Top Covers Removed Main Board A1 Component Location Control Board A2 Component Location Front-Panel Board A3 Component Location Power Mesh Board A4 Component Location Page Page Specifications General InformationOption 002 Hardware Status Indicators Table A-1. Specifications, Option Remote ProgrammingInput Compliance Voltage ± Current Programming Enable Output Impedance 10.2 k ohm ± 5% Temperature CoefficientOn State logic low Remote Trip and Remote Reset TimingPower-on Preset Maximum Output Voltage logic high +Pard Typical Table A-1. Specifications, Option Pulse TimingBias Supplies DC Output Ratings 25C ± Short Circuit Output CurrentConnector Assembly Procedure InstallationOperation Figure A-1. Mating Connector AssemblyLocal/Remote Programming Resistance Voltage or Current Figure A-4. Calculating Value of Series Dropping Resistor Remote Resistance ProgrammingFigure A-5. Remote Resistance Programming Remote Monitoring Remote Control Status IndicatorsOvervoltage Remote ResetFigure A-8. Remote Control Power-On PresetMultiple Supply System Shutdown AC Dropout Buffer CircuitBias Supplies MaintenanceTroubleshooting Current Programming Troubleshooting Resistance and Voltage ProgrammingFigure A-11. Troubleshooting Current Programming of CV Mode Figure A-13. Troubleshooting Status Indicators Page REF. Desig Model no Description Table A-3. Replacement Parts100 101 VR9Definitions Indicator and Qualifier SymbolsOLD Symbol NEW Symbol Logic Symbols and Definitions 102Schematic Diagram Notes 103 Schematic NotesFigure A-15. Option 002 Board, Component Location 104 Schematic NotesFigure A-16. Option 002 Board, Schematic Diagram 105 Page Model 6023A Model 6028A107 108 From
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