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SERVICE MANUAL
AUTORANGING
SYSTEM DC POWER SUPPLY
HP MODELS 6030A, 6031A,
6032A and 6035A
HP Part No. 5959-3344
FOR INSTRUMENTS WITH SERIAL NUMBERS
HP Model 6030A; Serials US38320301 and above
HP Model 6031A; Serials US38310376 and above
HP Model 6032A; Serials US38321026 and above
HP Model 6035A; Serials US38320281 and above
*
For instruments with higher serial numbers, a change page may be included.
Microfiche Part No. 5959-3345 Printed in USA: November, 1999
CERTIFICATION
Hewlett-Packard Company certifies that this product met its published specifications at time of shipment from the factory.
Hewlett-Packard further certifies that its calibration measurements are traceable to the United States National Bureau of
Standards, to the extent allowed by the Bureau's calibration facility, and to the calibration facilities of other International
Standards Organization members.
WARRANTY
This Hewlett-Packard hardware product is warranted against defects in material and workmanship for a period of three years
from date of delivery. HP software and firmware products, which are designated by HP for use with a hardware product and
when properly installed on that hardware product, are warranted not to fail to execute their programming instructions due to
defects in material and workmanship for a period of 90 days from date of delivery. During the warranty period Hewlett-
Packard Company will, at its option, either repair or replace products which prove to be defective. HP does not warrant that
the operation of the software, firmware, or hardware shall be uninterrupted or error free.
For warranty service, with the exception of warranty options, this product must be returned to a service facility designated
by HP. Customer shall prepay shipping charges by (and shall pay all duty and taxes) for products returned to HP for
warranty service. Except for products returned to Customer from another country, HP shall pay for return of products to
Customer.
Warranty services outside the country of initial purchase are included in HP's product price, only if Customer pays HP
international prices (defined as destination local currency price, or U.S. or Geneva Export price).
If HP is unable, within a reasonable time to repair or replace any product to condition as warranted, the Customer shall be
entitled to a refund of the purchase price upon return of the product to HP.
LIMITATION OF WARRANTY
The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by the Customer,
Customer-supplied software or interfacing, unauthorized modification or misuse, operation outside of the environmental
specifications for the product, or improper site preparation and maintenance. NO OTHER WARRANTY IS EXPRESSED
OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE.
EXCLUSIVE REMEDIES
THE REMEDIES PROVIDED HEREIN ARE THE CUSTOMER'S SOLE AND EXCLUSIVE REMEDIES. HP SHALL
NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.
ASSISTANCE
The above statements apply only to the standard product warranty. Warranty options, extended support contracts, product
maintenance agreements and customer assistance agreements are also available. Contact your nearest Hewlett-Packard
Sales and Service office for further information on HP's full line of Support Programs.
2
SAFETY SUMMARY
The following general safety precautions must be observed during all phases of operation, service and repair of this
instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety
standards of design, manufacture, and intended use of the instrument. Hewlett-Packard Company assumes no liability for
the customer's failure to comply with these requirements.
BEFORE APPLYING POWER.
Verify that the product is set to match the available line voltage and the correct fuse is installed.
GROUND THE INSTRUMENT.
This product is a Safety Class 1 instrument (provided with a protective earth terminal). To minimize shock hazard, the instrument chassis
and cabinet must be connected to an electrical ground. The instrument must be connected to the ac power supply mains through a three-
conductor power cable, with the third wire firmly connected to an electrical ground (safety ground) at the power outlet. For instruments
designed to be hard wired to the ac power lines (supply mains), connect the protective earth terminal to a protective conductor before any
other connection is made. Any interruption of the protective (grounding) conductor or disconnection of the protective earth terminal will
cause a potential shock hazard that could result in personal injury. If the instrument is to be energized via an external autotransformer for
voltage reduction, be certain that the autotransformer common terminal is connected to the neutral (earth pole) of the ac power lines
(supply mains).
INPUT POWER MUST BE SWITCH CONNECTED.
For instruments without a built-in line switch, the input power lines must contain a switch or another adequate means for disconnecting
the instrument from the ac power lines (supply mains).
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE.
Do not operate the instrument in the presence of flammable gases or fumes.
KEEP AWAY FROM LIVE CIRCUITS.
Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be made by qualified
service personnel. Do not replace components with power cable connected. Under certain conditions, dangerous voltages may exist even
with the power cable removed. To avoid injuries, always disconnect power, discharge circuits and remove external voltage sources before
touching components.
DO NOT SERVICE OR ADJUST ALONE.
Do not attempt internal service or adjustment unless another person, capable of rendering first aid and resuscitation, is present.
DO NOT EXCEED INPUT RATINGS.
This instrument may be equipped with a line filter to reduce electromagnetic interference and must be connected to a properly grounded
receptacle to minimize electric shock hazard. Operation at the line voltage or frequencies in excess of those stated on the data plate may
cause leakage currents in excess of 5.0mA peak.
SAFETY SYMBOLS.
Instruction manual symbol: the product will be marked with this symbol when it is necessary for the user to refer to the
instruction manual (refer to Table of Contents) .
Indicates hazardous voltages.
Indicate earth (ground) terminal.
The WARNING sign denotes a hazard. It calls attention to a procedure, practice, or the like, which, if not correctly
performed or adhered to, could result in personal injury. Do not proceed beyond a WARNING sign until the
indicated conditions are fully understood and met.
The CAUTION sign denotes a hazard. It calls attention to an operating procedure, or the like, which, if not correctly
performed or adhered to, could result in damage to or destruction of part or all of the product. Do not proceed beyond
a CAUTION sign until the indicated conditions are fully understood and met.
DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT.
Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification to the
instrument. Return the instrument to a Hewlett-Packard Sales and Service Office for service and repair to ensure that safety features are
maintained.
Instruments which appear damaged or defective should be made inoperative and secured against unintended operation until they can be
repaired by qualified service personnel.
3
TABLE OF CONTENTS
Introduction ............................................................................................................................................................................ 9
Scope .................................................................................................................................................................................... 9
Calibration and Verification ............................................................................................................................................. 9
Troubleshooting................................................................................................................................................................ 9
Principles of Operation ..................................................................................................................................................... 9
Replaceable Parts.............................................................................................................................................................. 9
Circuit Diagrams............................................................................................................................................................... 9
Safety Considerations ........................................................................................................................................................... 9
Manual Revisions ............................................................................................................................................................... 10
Firmware Revisions ............................................................................................................................................................ 10
Calibration and Verification................................................................................................................................................ 11
Introduction ........................................................................................................................................................................ 11
Test Equipment Required ................................................................................................................................................... 11
Operation Verification Tests............................................................................................................................................... 11
Calibration Procedure ......................................................................................................................................................... 11
Initial Setup..................................................................................................................................................................... 14
Voltage Monitor Zero Calibration .................................................................................................................................. 15
Common Mode Calibration ............................................................................................................................................ 15
Remote Readback Zero Calibration................................................................................................................................ 15
Constant Voltage Full Scale Calibration......................................................................................................................... 17
Voltage Monitor and Remote Readback Full Scale Calibration ..................................................................................... 17
Constant Voltage Zero Calibration ................................................................................................................................. 18
Current Monitor Zero Calibration................................................................................................................................... 18
Constant Current Zero Calibration.................................................................................................................................. 18
Current Monitor Full Scale Calibration .......................................................................................................................... 19
Constant Current Full Scale Calibration ......................................................................................................................... 19
Power Limit Calibration ................................................................................................................................................. 20
Resistance Programming Full Scale Calibration............................................................................................................. 21
Performance Tests .............................................................................................................................................................. 21
Measurement Techniques ............................................................................................................................................... 21
Constant Voltage (CV) Tests.......................................................................................................................................... 22
Constant Current (CC) Tests........................................................................................................................................... 28
Initialization Procedure....................................................................................................................................................... 31
Troubleshooting .................................................................................................................................................................... 33
Introduction ........................................................................................................................................................................ 33
Initial Troubleshooting Procedures..................................................................................................................................... 33
Electrostatic Protection....................................................................................................................................................... 34
Repair and Replacement ..................................................................................................................................................... 34
A2 Control Board Removal ............................................................................................................................................ 35
A4 FET Board Removal ................................................................................................................................................. 36
A5 Diode Board Removal .............................................................................................................................................. 36
A8 HP-IB Board Removal.............................................................................................................................................. 36
A3 Front-Panel Board Removal...................................................................................................................................... 36
A1 Main Board Removal................................................................................................................................................ 37
Overall Troubleshooting Procedure.................................................................................................................................... 37
HP-IB Section Troubleshooting.......................................................................................................................................... 40
Primary Interface Troubleshooting ..................................................................................................................................... 40
Secondary Interface Troubleshooting ................................................................................................................................. 43
Voltage and Current DAC .............................................................................................................................................. 43
Readback DAC Circuits.................................................................................................................................................. 43
5
Readback Multiplexer (U20): ......................................................................................................................................... 45
Signature Analysis .............................................................................................................................................................. 45
Primary SA ..................................................................................................................................................................... 46
Front Panel SA................................................................................................................................................................ 46
Secondary SA ................................................................................................................................................................. 46
Power Section Troubleshooting.......................................................................................................................................... 52
Main Troubleshooting Setup .......................................................................................................................................... 53
Troubleshooting No-Output Failures .............................................................................................................................. 54
Power Section Blocks ..................................................................................................................................................... 55
Troubleshooting AC-Turn-On Circuits........................................................................................................................... 58
Troubleshooting DC-To-DC Converter .......................................................................................................................... 58
Troubleshooting Bias Supplies ....................................................................................................................................... 59
Troubleshooting Down Programmer .............................................................................................................................. 62
Troubleshooting CV Circuit ........................................................................................................................................... 62
Troubleshooting CC Circuit............................................................................................................................................ 63
Troubleshooting OVP Circuit......................................................................................................................................... 63
Troubleshooting PWM & Clock..................................................................................................................................... 64
Principles of Operation ........................................................................................................................................................ 67
Introduction ........................................................................................................................................................................ 67
HP-IB Board....................................................................................................................................................................... 67
Primary Microprocessor ................................................................................................................................................. 67
Address Switches........................................................................................................................................................... 67
EEPROM........................................................................................................................................................................ 69
Isolation .......................................................................................................................................................................... 69
Secondary Microprocessor ............................................................................................................................................. 69
Digital-to-Analog Converters ......................................................................................................................................... 69
Analog Multiplexer......................................................................................................................................................... 69
Status Inputs ................................................................................................................................................................... 69
Front Panel Board............................................................................................................................................................... 70
Address Latches and Decoders ....................................................................................................................................... 70
Volts and Amps Output Ports and Displays.................................................................................................................... 70
RPG and Latches ............................................................................................................................................................ 70
Front-Panel Switches and Input Port .............................................................................................................................. 70
Mode Indicators.............................................................................................................................................................. 72
OVP Adjust Control ....................................................................................................................................................... 72
Power Clear .................................................................................................................................................................... 72
Power Mesh and Control Board.......................................................................................................................................... 72
Overview ........................................................................................................................................................................ 72
Power Mesh .................................................................................................................................................................... 74
Control Board ................................................................................................................................................................. 75
Replaceable Parts ................................................................................................................................................................. 81
Introduction ........................................................................................................................................................................ 81
Ordering Information.......................................................................................................................................................... 82
Component Location and Circuit Diagrams .................................................................................................................... 103
l00 Vac Input Power Option 100 ....................................................................................................................................... 119
General Information.......................................................................................................................................................... 119
Description ................................................................................................................................................................... 119
Scope of Appendix A.................................................................................................................................................... 119
Suggestions for Using Appendix A............................................................................................................................... 119
Chapter 1 Manual Changes........................................................................................................................................... 119
Chapter 2 Manual Changes........................................................................................................................................... 119
6
Chapter 3 Manual Changes:.......................................................................................................................................... 123
Chapter 4 Manual Changes:.......................................................................................................................................... 123
Chapter 5 and 6 Manual Changes ................................................................................................................................. 123
Blank Front Panel Option 001........................................................................................................................................... 125
Introduction ...................................................................................................................................................................... 125
Troubleshooting............................................................................................................................................................ 125
Chapter 2 Manual Changes:.......................................................................................................................................... 125
Chapter 3 Manual Changes:.......................................................................................................................................... 126
Chapter 5 and 6 Manual Changes: ................................................................................................................................ 126
7
1
Introduction
Scope
This manual contains information for troubleshooting the HP 6030A, 6031A, 6032A, or 6035A 1000 W Autoranging Power
Supply to the component level. Wherever applicable, the service instructions given in this manual refer to pertinent
information provided in the Operation Manual (P/N 5959-3301). Both manuals cover HP Models 6030A/31A/32A/35A;
differences between models are described as required.
The following information is contained in this manual.
Calibration and Verification
Contains calibration procedures for HP Models 6030A/31A/32A/35A. Also contains verification procedures that check the
operation of the supplies to ensure they meet the specifications of Chapter 1 in the Operating Manual.
Troubleshooting
Contains troubleshooting procedures to isolate a malfunction to a defective component on the main circuit board or to a
defective assembly (front panel, power transformer, or cable assembly). Board and assembly level removal and replacement
procedures are also given in this section.
Principles of Operation
Provides block diagram level descriptions of the supply's circuits. The primary interface, secondary interface, and the power
mesh and control circuits are described. These descriptions are intended as an aid in troubleshooting.
Replaceable Parts
Provides a listing of replaceable parts for all electronic components and mechanical assemblies for HP Models
6030A/31A/32A/35A.
Circuit Diagrams
Contains functional schematics and component location diagrams for all HP 6030A/31A/32A/35A circuits. The names that
appear on the functional schematics also appear on the block diagrams in Chapter 2. Thus, the descriptions in Chapter 2 can
be correlated with both the block diagrams and the schematics.
Safety Considerations
This product is a Safety Class 1 instrument, which means that it is provided with a protective earth terminal. Refer to the
Safety Summary page at the beginning of this manual for a summary of general safety information. Safety information for
specific procedures is located at appropriate places in the manual.
9
Manual Revisions
Hewlett-Packard instruments are identified by a 10-digit serial number. The format is described as follows: first two letters
indicate the country of manufacture. The next four digits are a code that identify either the date of manufacture or of a
significant design change. The last four digits are a sequential number assigned to each instrument.
Item Description
US The first two letters indicates the country of manufacture, where US = USA.
3648 This is a code that identifies either the date of manufacture or the date of a significant design change.
0101 The last four digits are a unique number assigned to each power supply.
If the serial number prefix on your unit differs from that shown on the title page of this manual, a yellow Manual Change
sheet may be supplied with the manual. It defines the differences between your unit and the unit described in this manual.
The yellow change sheet may also contain information for correcting errors in the manual.
Note that because not all changes to the product require changes to the manual, there may be no update information required
for your version of the supply.
Older serial number formats used with these instruments had a two-part serial number, i.e. 2701A-00101. This manual also
applies to instruments with these older serial number formats. Refer to Appendix G for backdating information.
Firmware Revisions
The primary and secondary interface microcomputer chips inside of your supply are identified with labels that specify the
revision of the supply's firmware. This manual applies to firmware revisions A.00.00, A.00.01, and A.00.02.
10
2
Calibration and Verification
Introduction
This section provides test and calibration procedures. The operation-verification tests comprise a short procedure to verify
that the unit is performing properly, without testing all specified parameters. After troubleshooting and repair of a defective
power supply you can usually verify proper operation with the turn-on checkout procedure in the Operating Manual. Repairs
to the A1 main board, the A2 control board and the A8 HP-IB board can involve circuits which, although functional, may
prevent the unit from performing within specified limits. So, after A1, A2 or A8 board repair, decide if recalibration and
operation verification tests are needed according to the faults you discover. Use the calibration procedure both to check
repairs and for regular maintenance.
When verifying the performance of this instrument as described in this chapter, check only those specifications for which a
performance test procedure is included.
Test Equipment Required
Table 2-1 lists the equipment required to perform the tests of this section. You can separately identify the equipment for
performance tests, calibration and troubleshooting using the USE column of the table.
Operation Verification Tests
To assure that the unit is performing properly, without testing all specified parameters, first perform the turn-on checkout
procedure in the Operating Manual. Then perform the following performance tests, in this section.
Voltage Programming And Readback Accuracy
Current Programming And Readback Accuracy
CV Load Effect
CC Load Effect
Calibration Procedure
Calibrate the unit twice per year and when required during repair. The following calibration procedures should be
performed in the sequence given.
Note: Some of the calibration procedures for this instrument can be performed independently, and some
procedures must be performed together and/or in a prescribed order. If a procedure contains no references
to other procedures, you may assume that it can be performed independently.
To return a serviced unit to specifications as quickly as possible with minimal calibration, the technician
need only perform calibration procedures that affect the repaired circuit. Table 2-2 lists various power
supply circuits with calibration procedures that should be performed after those circuits are serviced.
If the HP-IB board (A8) has been replaced, you must first initialize the board before you can calibrate the
unit. Refer to Page 31.
11
Table 2-1. Test Equipment Required
TYPE REQUIRED CHARACTERISTICS USE RECOMMENDED MODEL
Oscilloscope Sensitivity: 1 mV P,T HP54504A
Bandwidth: 20MHz & 100MHz
Input: differential, 50 & 10M
RMS Voltmeter True rms, 10MHz bandwidth P HP3400B
Sensitivity: 1 mV Accuracy: 5%
Logic Pulser 4.5 to 5.5Vdc @ 35mA T HP546A
Multimeter Resolution: 100nV P,C,T HP 3458A
Accuracy: 0.0035%, 6◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo