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Agilent Technologies 6632B, 6634B, 66332A, 6633B Diagrams, General Schematic Notes, Introduction

Models: 6632B 6633B 66332A 6634B

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Diagrams

Introduction

This chapter contains drawings and diagrams for troubleshooting and maintaining the Agilent Model 66332A Dynamic Measurement DC Source and the Agilent Model 66332A/6632B/6633B/6634B System DC Power Supplies. Unless otherwise specified in the drawings, a drawing or diagram applies to all models and input voltage options.

General Schematic Notes

aComponents marked with an asterisk are model dependent (See Table 6-1).

aAll resistors are in ohms 1%, 1/8 W, unless otherwise specified.

aAll resistors are in ohms 1%, 1/8 W, unless otherwise specified.

aAll capacitors are in microfarads unless otherwise specified.

aUnless otherwise noted, bias connections to integrated-circuit packages are as follows:

		Common	5 V
14-pin packages		pin 7	pin 14
16-pin packages		pin 8	pin 16
20-pin packages		pin 10	pin 20
		Table 6-1. Model-dependent Components
Designator	66332A/	6633B	6634B	Designator	66332A/	6633B	6634B
	6632B				6632B
C300, 304, 307	0.047 uF			C411		2.2 uF	2.2 uF
C302	18000 uF	2200 uF	1200 uF	C420, 421		0.022 uF	0.022 uF
C313	33,000 uF	18000 uF	8200 uF	C422, 424, 425		1000 pF	220 pF
C314-316	0.047 uF			C423		0.047 uF	0.0047 uF
C331, 332	2200 pF			C425		1000 pF	1000 pF
C333	0.033 uF			C426			0.1 uF
C335	3300 pF	3300 pF	0.047 pF	C427			4700 pF
C340			0.01 uF	C428-430		0.047 uF	0.047 uF
C344, 346	0.047 uF	0.022 uF	0.022 uF	C431, 432		0.22 uF
C349, 352	10 pF	0.033 uF	0.033 uF	C482		0.022 uF	0.022 uF
C359	10 pF	22 pF	22 pF	C499	6.8 uF
C360	10 pF	15 pF	10 pF	D319, 320, 321		Diode	Diode
C361	33 pF			D330	Diode	Diode
C362	180 pF	220 pF	120 pF	D400			Diode
C372, 373	0.047 uF			D499	Diode	Diode
C375			0.047 uF	F400, 406	0 Ohm
C376, 377	0.047 uF	0.022 uF	6800 pF	L300, 301	22 uH
C378	0.047 uF			Q312, 319	Transistor
C382	100 uF	50 uF	22 uF	R300	3K	12K	33K
C383	1 uF			R301, 302	121 Ohm	511 Ohm	2k
C403	10 pF			R313	4.7 Ohm	10 Ohm	10 Ohm

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Agilent Technologies 6632B, 6634B, 66332A Diagrams, General Schematic Notes, Introduction, 1. Model-dependentComponents

Contents

and Agilent Model 6632B, 6633B, 6634B System DC Power SupplyAgilent Model 66332A Dynamic Measurement DC SourceCERTIFICATION Warranty InformationWARRANTY LIMITATION OF WARRANTYSAFETY SYMBOLS Safety SummaryBEFORE APPLYING POWER DO NOT SERVICE OR ADJUST ALONEDescription Safety Symbol DefinitionsSymbol Item Description Printing HistoryInstrument Identification VERIFICATION AND PERFORMANCE TESTS Table of ContentsTROUBLESHOOTING INTRODUCTIONINDEX REPLACEABLE PARTS LISTDIAGRAMS PRINCIPLES OF OPERATIONPage Related Documents Safety ConsiderationsIntroduction OrganizationFirmware Revisions RevisionsElectrostatic Discharge Manual RevisionsTest Equipment Required Verification and Performance TestsIntroduction Figure 2-1.Test Setup Test SetupMeasurement Techniques 2 - Verification and Performance TestsCurrent-MonitoringResistor Operation Verification TestsPerformance Tests Electronic LoadCV Load Effect CV SetupConstant Voltage CV Tests Voltage Programming and Readback AccuracyVerification and Performance Tests CV Source EffectCV Noise PARD Current Programming and Readback Accuracy Transient Recovery TimeCC Setup Constant Current CC TestsVerification and Performance Tests Current Sink -CCOperationLow Range Current Readback Accuracy CC Load and Line Regulation2 - Verification and Performance Tests CC Load EffectCC Source Effect Verification and Performance Tests Performance Test Equipment FormCC Noise PARD 2 - Verification and Performance Tests Performance Test Record FormsVerification and Performance Tests 2 - Verification and Performance Tests Introduction TroubleshootingTest Equipment Required Overall TroubleshootingFlow Charts 3 - TroubleshootingFigure 3-1Sheet 1. Main Flowchart TroubleshootingFigure 3-1Sheet 2. Main Flowchart continued 3 - TroubleshootingFigure 3-1Sheet 3. Main Flowchart continued TroubleshootingFigure 3-1Sheet 4. OV at Turn-On 3 - TroubleshootingFigure 3-1Sheet 5. OV at Turn-Oncontinued TroubleshootingFigure 3-1Sheet 6. FS Indicated but Fuse OK 3 - TroubleshootingFigure 3-1Sheet 7. No Output Voltage TroubleshootingFigure 3-1Sheet 8. No Output Voltage continued 3 - TroubleshootingFigure 3-1Sheet 9 No Output Voltage continued TroubleshootingFigure 3-1Sheet 10. No Current Limit 3 - TroubleshootingFigure 3-1Sheet 11. Unit Does Not OV TroubleshootingFigure 3-1Sheet 12. High Output Voltage 3 - TroubleshootingTable 3-2. Self-TestError Codes/Messages Specific Troubleshooting ProceduresPower-on Self-testFailures TroubleshootingTable 3-3.Bias and Reference Voltages CV/CC Status Annunciators TroubleshootingBias and Rail Voltages 3 - TroubleshootingTroubleshooting J307 Voltage Measurements3 - Troubleshooting Disabling Protection FeaturesManual Fan Speed Control Troubleshooting Inhibit Calibration SwitchCalibration Password Post-repairCalibrationIdentifying the Firmware ROM UpgradeUpgrade Procedure InitializationFigure 3-2.Component Location Disassembly ProceduresList of Required Tools Troubleshooting3 - Troubleshooting Cover, Removal and ReplacementA2 Interface Board, Removal and Replacement Front Panel Assembly, Removal and ReplacementA1 Main Control Board S1 Line Switch, Removal and ReplacementA3 Front Panel Board, Removal and Replacement T1 Power Transformer, Removal and Replacement3 - Troubleshooting Line Voltage WiringFigure 3-3.Transformer Wiring Introduction I/O Interface SignalsPrinciples of Operation Table 4-1.Power Supply Interface signalsSecondary Interface A3 Front Panel CircuitsA2 Interface Circuits Primary InterfaceFigure 4-1.A2/A3 Block Diagram Principles of Operation4 - Principles of Operation Power CircuitsA1 Main Board Circuits Principles of Operation Figure 4-2.A1 Block Diagram4 - Principles of Operation Control CircuitsPrinciples of Operation Page Table 5-1.Chassis, Electrical Replaceable Parts ListIntroduction Table 5-2.Chassis, Mechanical 5 - Replaceable PartsFigure 5-1.Mechanical Parts ldentification Replaceable Parts5 - Replaceable Parts Table 5-3.A1 Control Board PC Board AssemblyReplaceable Parts 5 - Replaceable Parts Replaceable Parts 5 - Replaceable Parts Replaceable Parts 5 - Replaceable Parts Replaceable Parts 5 - Replaceable Parts Replaceable Parts 5 - Replaceable Parts Replaceable Parts Table 5-6.Relay Option #760 5 - Replaceable PartsTable 5-4.Binding Post Option #020 Table 5-5.A5 AC input/RFI BoardTable 6-1. Model-dependentComponents DiagramsGeneral Schematic Notes Introduction66332A 6 - DiagramsTable 6-1. Model-dependentComponents continued DesignatorTable 6-2.A1 Board Component Locations DiagramsTable 6-2continued 6 - DiagramsFigure 6-1.A1 Board Component Locations Figure 6-2.A4 and A6 Board Component Locations Figure 6-3.A1 Board schematic sheet A1 Board schematic sheet A1 Board schematic sheet Figure 6-4.A6 Relay Option Board schematic Index Page Manual Updates