Agilent Technologies 66332A Specific Troubleshooting Procedures, Power-on Self-test Failures

Page 37

Troubleshooting - 3

Specific Troubleshooting Procedures

Power-on Self-test Failures

The power-on self-test sequence tests most of the digital and DAC circuits. If the supply fails self-test, the display "ERR" annunciator will come on. You can then query the unit to find out what the error(s) are. When an error is detected, the output is not disabled so you can still attempt to program the supply to help troubleshoot the unit. Table 3-2 lists the self test errors and gives the probable cause for each error.

NOTE: A partial self test is performed when the *TST? query is executed. Those tests that interfere with normal interface operation or cause the output to change are not performed by *TST?. The return value of *TST? will be zero if all tests pass, or the error code of the first test that failed. The power supply will continue normal operation if *TST? returns a non-zero value.

Table 3-2. Self-Test Error Codes/Messages

Error Code

Description

Probable Cause

E1

Checksum in Read-only Non-volatile ROM

A2 Interface Bd

E2

Checksum in Config Non-volatile ROM

A2 Interface Bd

E3

Checksum in Cal Non-volatile ROM

A2 Interface Bd

E4

Checksum in State Non-volatile ROM

A2 Interface Bd

E5

Checksum in RST Non-volatile ROM

A2 Interface Bd

E10

RAM test failed

A2

Interface Bd

E11

12 bit DAC test failed, 0 is written to DAC U241A and B,

A2

Interface Bd

 

ADC U242 is checked for 133 +/- 7 counts

 

 

E12

12 bit DAC test failed, 4095 is written to DAC U241A

A2

Interface Bd

 

and 0 to B, ADC U242 is checked for 71 +/- 7 counts

 

 

E13

12 bit DAC test failed, 0 is written to DAC U241A and

A2

Interface Bd

 

4095 to B, ADC U242 is checked for 71 +/- 7 counts

 

 

E14

12 bit DAC test failed, 4095 is written to DAC U241A

A2

Interface Bd

 

and B, ADC U242 is checked for 10 +/- 7 counts

 

 

E15

8 bit DAC test failed, 10 and 240 are written to DAC

A2

Interface Bd

 

U244, ADC U242 is checked for 10 and 240 +/- 7 counts

 

 

E80

Dig I/O test failed, SEC_PCLR written low and high,

A2

Interface Bd

 

read back through Xilinx

 

 

E213

RS-232 input buffer overrun

A2

Interface Bd

E216

RS-232 framing error

A2

Interface Bd

E217

RS-232 parity error

A2

Interface Bd

E218

RS-232 UART input overrun

A2

Interface Bd

E220

Front Panel comm UART input overrun

A3

Front Panel/Display Bd

E221

Front Panel comm UART framing error

A3

Front Panel/Display Bd

E222

Front Panel comm UART parity error

A3

Front Panel/Display Bd

E223

Front Panel firmware input buffer overrun

A3

Front Panel/Display Bd

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Contents Agilent Part No Microfiche No October Certification Warranty InformationBefore Applying Power Safety SummarySymbol Description Safety Symbol DefinitionsInstrument Identification Printing HistoryItem Description Table of Contents Disassembly Procedures Initialization ROM UpgradeIntroduction General Schematic Notes Backdating Post-repair CalibrationPage Organization Safety ConsiderationsRelated Documents ChapterElectrostatic Discharge RevisionsManual Revisions Firmware RevisionsIntroduction Type Specifications Recommended ModelTest Equipment Required Built-in Self TestsMeasurement Techniques Test SetupPerformance Tests Operation Verification TestsElectronic Load Current-Monitoring ResistorConstant Voltage CV Tests CV SetupVoltage Programming and Readback Accuracy CV Load EffectCV Noise Pard CV Source EffectCC Setup Transient Recovery TimeConstant Current CC Tests Current Programming and Readback AccuracyLow Range Current Readback Accuracy Current Sink -CC OperationCC Load and Line Regulation CC Source Effect CC Load EffectCC Noise Pard Performance Test Equipment FormPerformance Test Record Forms − 4 mV + 4 mV Vout − 12 mV Model Agilent 6634B Report No Date Test Description MinimumVout − 42 mV Iout + 0.29 mATroubleshooting Flow Charts Overall TroubleshootingTest Equipment Required for Troubleshooting Type Purpose Recommended ModelSheet 1. Main Flowchart Sheet 2. Main Flowchart Sheet 3. Main Flowchart Sheet 4. OV at Turn-On Sheet 5. OV at Turn-On Sheet 6. FS Indicated but Fuse OK Sheet 7. No Output Voltage Sheet 8. No Output Voltage Sheet 9 No Output Voltage Sheet 10. No Current Limit Sheet 11. Unit Does Not OV Sheet 12. High Output Voltage Power-on Self-test Failures Specific Troubleshooting ProceduresSelf-Test Error Codes/Messages Error Code Description Probable CauseBias and Rail Voltages CV/CC Status Annunciators TroubleshootingBias and Reference Voltages Bias Test Point Common MeasurementVoltage Measurements at J307 A2 Interface to A1 Main board J307 Voltage MeasurementsManual Fan Speed Control Disabling Protection FeaturesCalibration Password Inhibit Calibration SwitchPost-repair Calibration Upgrade Procedure ROM UpgradeInitialization Identifying the FirmwareRemote sense leads before attempting disassembly Disassembly ProceduresList of Required Tools A2 Interface Board, Removal and Replacement Cover, Removal and ReplacementFront Panel Assembly, Removal and Replacement A3 Front Panel Board, Removal and Replacement S1 Line Switch, Removal and ReplacementT1 Power Transformer, Removal and Replacement A1 Main Control BoardTransformer Wiring Line Voltage WiringPower Supply Interface signals Interface SignalsConnector Signal Description A2 Interface Circuits A3 Front Panel CircuitsPrimary Interface Secondary InterfaceA2/A3 Block Diagram A1 Main Board Circuits Power CircuitsA1 Block Diagram Control Circuits Principles of Operation Page Designator Model PartNumber Qty Description Chassis, ElectricalDesignator Model Part Number Qty Description Chassis, MechanicalMechanical Parts ldentification A1 Control Board PC Board Assembly Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts A5 AC input/RFI Board Binding Post Option #020Relay Option #760 Model-dependent Components General Schematic NotesDiagrams A1 Board Component Locations R434 825 R500 175 325 R435 R505 A1 Board Component Locations A4 and A6 Board Component Locations A1 Board schematic sheet A1 Board schematic sheet A1 Board schematic sheet A6 Relay Option Board schematic Index Index Manual Updates
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6632B, 6633B, 66332A, 6634B specifications

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