Manuals / Agilent Technologies / Home Audio / Stereo System

Agilent Technologies 66332A, 6634B, 6633B, 6632B Troubleshooting, 1Sheet 1. Main Flowchart

Models: 6632B 6633B 66332A 6634B

1 83

Download 83 pages 60.43 Kb

Page 25

Troubleshooting - 3

Troubleshooting - 3

Turn on unit and observe the display. Unit should display all of the segments and annunciators, the address and then after self test display either an error message or go to the metering mode.

Display comes

+5V @ A3J2-8?

A3J2-5 held

Replace A3 Front

No

Yes

No

Panel/Display

on?

low?

board

No

Yes

									Troubleshoot A1
	Yes								Troubleshoot A1
									+5V Interface Bias
									circuit, W6 or W7.


Error Message?									See Error Message
							Yes
							Yes
									Table 3-2
									Table 3-2


		No

Replace A2 Interface board

Protect											Go to
Protect											"Troubleshooting
Annunciator		OV?
								Yes
								Yes			OV at Turn-on"
On?											OV at Turn-on"
On?											(sheet 4)
											(sheet 4)


			No

		RI?									Check RI input, A2
								Yes
								Yes
											Interface board
											Interface board

No

No

Disable OCP and

OC? Yes check for normal operation

No

FS?		Fuse blown?		Go to "FS indicated
FS?	Yes	Fuse blown?	No	but fuse is OK"
Go to sheet 2				(sheet 6)
No		Yes

For OT check fan circuit, thermal sensor RT301

Replace internal fuse F300

Figure 3-1 Sheet 1. Main Flowchart

25

Image 25

Agilent Technologies 66332A, 6634B, 6633B, 6632B service manual Troubleshooting, 1Sheet 1. Main Flowchart

Contents

Agilent Model 66332A System DC Power SupplyDynamic Measurement DC Source and Agilent Model 6632B, 6633B, 6634BWARRANTY Warranty InformationLIMITATION OF WARRANTY CERTIFICATIONBEFORE APPLYING POWER Safety SummaryDO NOT SERVICE OR ADJUST ALONE SAFETY SYMBOLSSymbol Safety Symbol DefinitionsDescription Instrument Identification Printing HistoryItem Description TROUBLESHOOTING Table of ContentsINTRODUCTION VERIFICATION AND PERFORMANCE TESTSDIAGRAMS REPLACEABLE PARTS LISTPRINCIPLES OF OPERATION INDEXPage Introduction Safety ConsiderationsOrganization Related DocumentsElectrostatic Discharge RevisionsManual Revisions Firmware RevisionsIntroduction Verification and Performance TestsTest Equipment Required Measurement Techniques Test Setup2 - Verification and Performance Tests Figure 2-1.Test SetupPerformance Tests Operation Verification TestsElectronic Load Current-MonitoringResistorConstant Voltage CV Tests CV SetupVoltage Programming and Readback Accuracy CV Load EffectCV Noise PARD CV Source EffectVerification and Performance Tests CC Setup Transient Recovery TimeConstant Current CC Tests Current Programming and Readback AccuracyLow Range Current Readback Accuracy Current Sink -CCOperationCC Load and Line Regulation Verification and Performance TestsCC Source Effect CC Load Effect2 - Verification and Performance Tests CC Noise PARD Performance Test Equipment FormVerification and Performance Tests 2 - Verification and Performance Tests Performance Test Record FormsVerification and Performance Tests 2 - Verification and Performance Tests Introduction TroubleshootingFlow Charts Overall Troubleshooting3 - Troubleshooting Test Equipment RequiredFigure 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 - TroubleshootingPower-on Self-testFailures Specific Troubleshooting ProceduresTroubleshooting Table 3-2. Self-TestError Codes/MessagesBias and Rail Voltages CV/CC Status Annunciators Troubleshooting3 - Troubleshooting Table 3-3.Bias and Reference VoltagesTroubleshooting J307 Voltage MeasurementsManual Fan Speed Control Disabling Protection Features3 - Troubleshooting Calibration Password Inhibit Calibration SwitchPost-repairCalibration TroubleshootingUpgrade Procedure ROM UpgradeInitialization Identifying the FirmwareList of Required Tools Disassembly ProceduresTroubleshooting Figure 3-2.Component LocationA2 Interface Board, Removal and Replacement Cover, Removal and ReplacementFront Panel Assembly, Removal and Replacement 3 - TroubleshootingA3 Front Panel Board, Removal and Replacement S1 Line Switch, Removal and ReplacementT1 Power Transformer, Removal and Replacement A1 Main Control BoardFigure 3-3.Transformer Wiring Line Voltage Wiring3 - Troubleshooting Principles of Operation I/O Interface SignalsTable 4-1.Power Supply Interface signals IntroductionA2 Interface Circuits A3 Front Panel CircuitsPrimary Interface Secondary InterfaceFigure 4-1.A2/A3 Block Diagram Principles of OperationA1 Main Board Circuits Power Circuits4 - Principles of Operation Principles of Operation Figure 4-2.A1 Block Diagram4 - Principles of Operation Control CircuitsPrinciples of Operation Page Introduction Replaceable Parts ListTable 5-1.Chassis, Electrical 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 5-4.Binding Post Option #020 5 - Replaceable PartsTable 5-5.A5 AC input/RFI Board Table 5-6.Relay Option #760General Schematic Notes DiagramsIntroduction Table 6-1. Model-dependentComponentsTable 6-1. Model-dependentComponents continued 6 - DiagramsDesignator 66332ATable 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