Agilent Technologies AGILENT MODELS 6023A and 6028A instruction

Table 5-4. A2 Control Board Parts List (continued)

Ref. Desig.	Agilent Model	Agilent Part Number	Description
R85	All	0698-3450	Resistor 42.2KΩ 1% 1/8W
R86	All	0757-0452	Resistor 27.4KΩ 1% 1/8W
R87	All	0683-2715	Resistor 270Ω 5% 1/8W
R88,89	All	0683-2225	Resistor 2.2KΩ 5% 1/4W
R90	All	0683-2715	Resistor 270Ω 5% 1/8W
R91	All	0683-2225	Resistor 2.2KΩ 5% 1/4W
R92	All	0683-2015	Resistor 200Ω 5% 1/4W
R93	All	0686-5125	Resistor 5.1KΩ 5% 1/4W
R94	All	0686-1035	Resistor 10KΩ 5% 1/4W
R95	All	0757-0472	Resistor 200KΩ 1% 1/8W
R96	6023A	0698-3572	Resistor 60.4KΩ 1% 1/8W
R96	6028A	0757-0455	Resistor 36.5KΩ 1% 1/8W
R97	All	0686-5125	Resistor 5.1KΩ 5% 1/4W
R98	All	0686-2735	Resistor 27KΩ 5% 1/4W
R99	All	0686-1035	Resistor 10KΩ 5% 1/4W
R100,101	All	1810-0365	Network sip 2.2KΩ X5
R102,103	All	0757-0449	Resistor 20KΩ 1% 1/8W
R104	All	0757-0280	Resistor 1KΩ l% 1/8W
R105	All	0698-3430	Resistor 21.5KΩ 1% 1/8W
R106	All	0698-3449	Resistor 28.7KΩ 1% 1/8W
R107	All	0698-3153	Resistor 3.38KΩ 1% 1/8W
R108	All	0683-2035	Resistor 20KΩ 5% 1/4W
R109	All	0683-2225	Resistor 2.2KΩ 5% 1/4W
R110	All	0683-4725	Resistor 4.7KΩ 5% 1/4W
R111	All	0683-2025	Resistor 2KΩ 5% 1/4W
R112	All	0683-1125	Resistor 1.1KΩ 5% 1/4W
R113	All	0757-0442	Resistor 10KΩ 1% 1/8W
R114	All	0757-0424	Resistor 1.1KΩ 1% 1/8W
R115	All	0683-1015	Resistor 100Ω 5% 1/4W
R116	All	0683-3498	Resistor 8.66KΩ 1% 1/8W
R117	All	0757-0438	Resistor 5.11KΩ 1% 1/8W
R118	All	1810-0365	Network sip 2.2KΩ X5
R119	All	0757-0288	Resistor 9.09Ω 1% 1/8W
R120	All	0683-1005	Resistor 10Ω 5% 1/4W
R121	All	0757-0442	Resistor 10KΩ 1% 1/8W
R122	All	0683-5135	Resistor 51KΩ 5% 1/4W
R123-126	All	0683-4725	Resistor 4.7KΩ 5% 1/4W
R127	All	0683-1855	Resistor 1.8MO 5% 1/4W
R128	All	0683-6835	Resistor 68KΩ 5% 1/4W
R129	All	0757-0439	Resistor 6.8KΩ l% 1/8W
R130	All	0683-1055	Resistor 1MΩ 5% 1/4W
R131	All	0683-3335	Resistor 33KΩ 5% 1/4W
R132	All	0683-2225	Resistor 2.2KΩ 5% 1/4W
R133	All	0683-2735	Resistor 27KΩ 5% 1/4W
R134	All	0757-0466	Resistor 110KΩ 1% 1/8W
R135,136	All	0757-0442	Resistor 10KΩ 1% 1/8W
R137	All	0698-3455	Resistor 261KΩ 1% 1/8W
R138	All	0683-2045	Resistor 200KΩ 5% 1/4W

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Agilent Technologies AGILENT MODELS 6023A and 6028A service manual

Contents

Autoranging Certification Safety Summary Printing History Safety Symbol Definitions Table of Contents Replaceable Parts Circuit Diagrams TroubleshootingSafety Considerations Scope Item Description Manual Revisions Introduction Calibration ProcedureTest Equipment Required Operation Verification Tests Test Equipment Required Type Required Characteristics USE Recommended Model 1KVA Initial Setup MON Calibration Procedure Iout Vout Measurement Techniques Performance TestsCR7 Constant Voltage CV Tests Current-Monitoring Resistor Setup Basic 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 6028A Load Transient Recovery Waveform Constant Current CC Tests CC Pard Test Setup Initial Troubleshooting Procedures Troubleshooting PIN no Signal Name Control Board Test Connector, A2J7Vdc WAVEFORM/CONDITIONS Source Electrostatic Protection Repair and Replacement A2 Control Board Removal Overall Troubleshooting Procedure A4 Power Mesh Board RemovalA3 Front-Panel Board Removal A1 Main Board Removal Setup Using the TablesNode Measurement Main Troubleshooting Setup Main Troubleshooting Setup Modified Mains Cord Set For Troubleshooting Front-Panel Troubleshooting Troubleshooting No-Output Failures A2J7-26 A2J7-25 PWM-ON PWM-OFF Defective Check Functional CircuitsBoard Symptoms Defective Circuit Check Components Troubleshooting Bias SuppliesSymptoms Defective Check Functional Circuits Board Node + Measurement Source Measurement Source Node +Node + N0DE Troubleshooting AC-Turn-on Circuits Power Section BlocksSetup Measurement Source Setup Measurement Relay Enable Troubleshooting PWM & ClockPower Limit + OUT Troubleshooting DC-To-DC ConverterPWM-ON PWM-OFF Troubleshooting CC Circuit Troubleshooting CV Circuit Troubleshooting OVP Circuit Troubleshooting Down ProgrammerA4U4OUT Waveforms SET Voltage Vdc Node + Page Block Diagram Overview Autoranging Power Block Diagram Simplified Schematic Simplified Schematic Down Programmer DC-to-DC Converter Constant-Voltage CV Circuit Pfet Control Signals Timing Diagram Constant-Current CC Circuit Power-Limit ComparatorOvervoltage Protection OVP Circuit Control-Voltage Comparator Pulse-Width Modulator PWM Initial-Ramp CircuitBias Voltage Detector AC-Surge Dropout Detector Display Circuits Second-Delay CircuitPage Reference Designators Replaceable Parts Description Abbreviations Ordering Information CR1 Electrical PartsCR2 CR3 XA2P2 XA2P1Mechanical Parts Control Board Assembly CR3 Page Page Page VR4 VR3VR5 DS1 CR5DS5 VR1 IC A/D Cmos 3-1/2 DGTVR2 Pfet NPN SI Chassis Electrical TS1 A2 Board Mechanical Parts A1TB1A3 Board Mechanical Parts A4 Board Mechanical Parts Option 240 240V Operation Option 220 220V Operation Component 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 General Information SpecificationsOption 002 Hardware Input Compliance Voltage ± Current Programming Enable Table A-1. Specifications, Option Remote ProgrammingOutput Impedance 10.2 k ohm ± 5% Temperature Coefficient Status Indicators Power-on Preset Remote Trip and Remote Reset TimingMaximum Output Voltage logic high + On State logic low Bias Supplies DC Output Ratings 25C ± Table A-1. Specifications, Option Pulse TimingShort Circuit Output Current Pard Typical Connector Assembly Procedure Installation Operation Figure A-1. Mating Connector Assembly Local/Remote Programming Resistance Voltage or Current Figure A-4. Calculating Value of Series Dropping Resistor Remote Resistance Programming Figure A-5. Remote Resistance Programming Remote Monitoring Remote Control Status Indicators Overvoltage Remote Reset Figure A-8. Remote Control Power-On Preset Multiple Supply System Shutdown AC Dropout Buffer Circuit Bias Supplies Maintenance Troubleshooting Current Programming Troubleshooting Resistance and Voltage Programming Figure A-11. Troubleshooting Current Programming of CV Mode Figure A-13. Troubleshooting Status Indicators Page REF. Desig Model no Description Table A-3. Replacement Parts 100 101 VR9 OLD Symbol NEW Symbol Indicator and Qualifier SymbolsLogic Symbols and Definitions 102 Definitions Schematic Diagram Notes 103 Schematic Notes Figure A-15. Option 002 Board, Component Location 104 Schematic Notes Figure A-16. Option 002 Board, Schematic Diagram 105 Page Model 6028A Model 6023A107 108 From