Agilent Technologies | 6011A | Service manual | Agilent Technologies 6011A Service manual

SERVICE MANUAL
AUTORANGING
DC POWER SUPPLY
AGILENT MODELS 6010A, 6011A,
6012B and 6015A
Agilent Part No. 06010-90001
FOR INSTRUMENTS WITH SERIAL NUMBERS
Agilent Model 6010A; Serials
US37110171 and above
Agilent Model 6011A; Serials
US35460156 and above
Agilent Model 6012B; Serials
US35430336 and above
Agilent Model 6015A; Serials
US37050146 and above
For instruments with higher serial numbers, a change page may be included.
Microfiche Part No. 06010-90002
Printed in USA: September 2000
CERTIFICATION
Agilent Technologies, Inc. certifies that this product met its published specifications at time of shipment from the factory.
Agilent Technologies, Inc. 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 Agilent Technologies, Inc. hardware product is warranted against defects in material and workmanship for a period of
three years from date of delivery. Agilent Technologies, Inc. software and firmware products, which are designated by
Agilent Technologies, Inc. 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 Agilent Technologies, Inc. will, at its option, either repair or
replace products which prove to be defective. Agilent Technologies, Inc. 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 Agilent Technologies, Inc. Customer shall prepay shipping charges by (and shall pay all duty and taxes) for products
returned to Agilent Technologies, Inc. for warranty service. Except for products returned to Customer from another
country, Agilent Technologies Inc. shall pay for return of products to Customer.
Warranty services outside the country of initial purchase are included in Agilent Technologies, Inc. product price, only if
Customer pays Agilent Technologies, Inc. international prices (defined as destination local currency price, or U.S. or
Geneva Export price).
If Agilent Technologies, Inc. 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 Agilent Technologies, Inc.
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. AGILENT TECHNOLOGIES, INC. 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. AGILENT
TECHNOLOGIES, INC. 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 Agilent
Technologies, Inc. Sales and Service office for further information on Agilent Technologies, Inc. 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. Agilent Technologies, Inc. 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 threeconductor 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 Agilent Technologies, Inc. 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 ............................................................................................................................................................................ 7
Scope .................................................................................................................................................................................... 7
Calibration and Verification ............................................................................................................................................. 7
Troubleshooting................................................................................................................................................................ 7
Principles of Operation ..................................................................................................................................................... 7
Replaceable Parts.............................................................................................................................................................. 7
Circuit Diagrams............................................................................................................................................................... 7
Safety Considerations ........................................................................................................................................................... 7
Manual Revisions ................................................................................................................................................................. 8
Calibration and Verification.................................................................................................................................................. 9
Introduction........................................................................................................................................................................... 9
Test Equipment Required ..................................................................................................................................................... 9
Operation Verification Tests................................................................................................................................................. 9
Calibration Procedure ........................................................................................................................................................... 9
Initial Setup..................................................................................................................................................................... 12
Performance Tests .............................................................................................................................................................. 16
Measurement Techniques ............................................................................................................................................... 16
Constant Voltage (CV) Tests .......................................................................................................................................... 18
Constant Current (CC) Tests........................................................................................................................................... 24
Troubleshooting .................................................................................................................................................................... 27
Introduction......................................................................................................................................................................... 27
Initial Troubleshooting Procedures..................................................................................................................................... 27
Electrostatic Protection ....................................................................................................................................................... 29
Repair and Replacement ..................................................................................................................................................... 29
A2 Control Board Removal ............................................................................................................................................ 30
A4 FET Board Removal ................................................................................................................................................. 30
A5 Diode Board Removal............................................................................................................................................... 31
A3 Front Panel Board Removal...................................................................................................................................... 31
A1 Main Board Removal................................................................................................................................................ 31
Overall Troubleshooting Procedure.................................................................................................................................... 32
Using the Tables ............................................................................................................................................................. 33
Main Troubleshooting Setup .......................................................................................................................................... 33
Troubleshooting No-Output Failures .............................................................................................................................. 36
Front Panel Troubleshooting........................................................................................................................................... 36
Troubleshooting Bias Supplies ....................................................................................................................................... 38
Power Section Blocks ..................................................................................................................................................... 40
Troubleshooting AC-Turn-on Circuits............................................................................................................................ 40
Troubleshooting PWM & Clock..................................................................................................................................... 41
Troubleshooting DC-To-DC Converter .......................................................................................................................... 42
Troubleshooting Down Programmer .............................................................................................................................. 42
Troubleshooting CV Circuit ........................................................................................................................................... 44
Troubleshooting CC Circuit............................................................................................................................................ 44
Troubleshooting OVP Circuit ......................................................................................................................................... 45
Principles of Operation ........................................................................................................................................................ 47
Autoranging Power ............................................................................................................................................................. 47
Overview............................................................................................................................................................................. 47
System Description ............................................................................................................................................................. 47
Regulation & Control Subsystem ....................................................................................................................................... 48
Protection Subsystem.......................................................................................................................................................... 53
Input Power Subsystem ...................................................................................................................................................... 53
5
DC Power Conversion Subsystem ...................................................................................................................................... 54
Output Subsystem............................................................................................................................................................... 54
The Front Panel Board........................................................................................................................................................ 55
Replaceable Parts.................................................................................................................................................................. 57
Introduction......................................................................................................................................................................... 57
Ordering Information.......................................................................................................................................................... 58
Component Location and Circuit Diagrams ...................................................................................................................... 79
System Option 002 (6010A, 6011A, 6012B) ........................................................................................................................ 89
General Information............................................................................................................................................................ 89
Specifications.................................................................................................................................................................. 89
Option 002 Hardware...................................................................................................................................................... 89
Installation .......................................................................................................................................................................... 93
Connector Assembly Procedure...................................................................................................................................... 93
Operation ............................................................................................................................................................................ 94
Local/Remote Programming........................................................................................................................................... 95
Remote Resistance Programming ................................................................................................................................... 97
Remote Monitoring......................................................................................................................................................... 99
Status Indicators............................................................................................................................................................ 100
Remote Control............................................................................................................................................................. 100
Power-On Preset ............................................................................................................................................................... 102
AC Dropout Buffer Circuit ........................................................................................................................................... 103
Multiple Supply System Shutdown .............................................................................................................................. 103
Bias Supplies ................................................................................................................................................................ 104
Maintenance...................................................................................................................................................................... 104
Troubleshooting............................................................................................................................................................ 105
Troubleshooting Resistance and Voltage Programming............................................................................................... 105
Troubleshooting Current Programming ........................................................................................................................ 105
Backdating........................................................................................................................................................................... 116
6
1
Introduction
Scope
This manual contains information for troubleshooting the Agilent Models 6010A, 6011A, 6012B, or 6015A 1000W
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. Both manuals cover Agilent Models 6010A/11A/12B/15A;
differences between models are described as required.
The following information is contained in this manual.
Calibration and Verification
Contains calibration procedures for Agilent Models 6010A/11A/12B/15A. 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 regulation and control, protection, input power, dc
power conversion and output 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 Agilent Models
6010A/11A/12B/15A.
Circuit Diagrams
Contains functional schematics and component location diagrams for all Agilent 6010A/11A/12B/15A circuits. The names
that appear on the functional schematics also appear on the block diagrams in Chapter 4. Thus, the descriptions in Chapter 4
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.
7
Manual Revisions
Agilent Technologies 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 B for backdating information.
8
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 and the A2 control board can involve circuits which, although functional, may prevent the
unit from performing within specified limits. So, after A1 or A2 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.
CV Load Effect
CC Load Effect
Calibration Procedure
Calibrate the unit twice per year and when required during repair. The following calibration procedures which follow
should be performed in the sequence given. Table 2-2 describes in detail these calibration procedures and lists the expected
results to which each adjustment must be made.
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 2-3 lists various power
supply circuits with calibration procedures that should be performed after those circuits are serviced.
9
Table 2-1. Test Equipment Required
TYPE
Oscilloscope
REQUIRED CHARACTERISTICS
Sensitivity: 1mV
Bandwidth: 20MHz & 100MHz
Input: differential, 50Ω & 10MΩ
USE
P,T
Isolation Transformer
100VA 4KVA minimum
T
RMS Voltmeter
True rms, 10MHz bandwidth
Sensitivity: 1 mV
Accuracy: 5%
P
Agilent 3400A
Logic Pulser
4.5 to 5.5Vdc @ 35mA
T
Agilent 546A
Multimeter
Resolution: 100nV
Accuracy: 0.0035%, 6½ digit
P,A,T
Agilent 3456A
CC PARD Test
Current Probe
No saturation at:
6010A 20Adc
6011A 100Adc
6012B 51Adc
6015A 51Adc
Bandwidth: 20Hz to 20MHz
P
Tektronix P6303
Probe/AM503 Amp/
TM500 Power Module
Electronic Load*
Power range: 1000 watts
Open and short switches
6010A
Voltage range: 200Vdc
Current range: 20Adc
6011A
Voltage range: 30Vdc
Current range: 120Adc
6012B
Voltage range: 65Vdc
Current range: 55Adc
6015A
Voltage range: 200Vdc
Current range: 5Adc
P,A
Transistor Devices Model
Value:
6010A
P,A
CC PARD Test
Resistive Load
3.5 ohms >1000W
Accuracy: 1%
6011A
0.058 ohms >1000W
Accuracy 1%
6012B
0.4 ohms >1000W
Accuracy: 1%
Rheostat or Resistor Bank
10
RECOMMENDED MODEL
Agilent 1740A
DLP 130-50-2500
DLR-400-15-2500
DLP 50-150-3000
DLP 130-50-2500
DLR-400-15-2500
Table 2-1. Test Equipment Required (continued)
TYPE
Load Resistors
(6015A)
REQUIRED CHARACTERISTICS
40Ω, ±1%, 1000W
250Ω, ±1%, 1000W
USE
P,A
Current-Monitoring
Resistors
Value:
6010A
P,A
RECOMMENDED MODEL
100mV @ 10A (10mΩ must
be capable of 20Amps)
Accuracy: 0.02% **
TC: 10ppm/°C
6011A
50mV @100A (0.5mΩ)
Accuracy: 0.05% **
TC: 30ppm/°C
6012B
50mV @ 50A (1.0mΩ)
Accuracy: 0.02% **
TC: 30ppm/°C
6015A
0.1Ω, 15A, ±0.04%**
Calibration and Test
Resistors
Value:
Terminating
Resistors (4)
Value: 50Ω ± 5%, noninductive
P
Blocking
Capacitors (2)
Value: 0.01µF, 600Vdc
P
Common-Mode
Toroidal Core
≥3.7µH/turn2
≅23mm I.D
P
Ferrox-Cube
500T600-3C8,
Agilent 9170-0061
DC Power Supply
.
Voltage range: 0-60Vdc
Current range: 0-50Adc
T,P
Agilent 6012B
Variable Voltage
Transformer
(autotransformer)
Range greater than -13% to +6% of
nominal input AC voltage
4KVA
P = performance testing
50Ω, 5%, 40W
2KΩ, 0.01%, ¼W
A = calibration adjustments
A,T
P,A
T = troubleshooting
* Resistors may be substituted for test where an electronic load is not available.
** Less accurate, and less expensive, current-monitor resistors can be used, but the accuracy to which current programming
and current meter reading can be checked must be reduced accordingly.
11
Initial Setup
Maintenance described herein is performed with power supplied to the instrument, and protective covers
removed. Such maintenance should be performed only by service trained personnel who are aware of the
hazards involved (for example, fire and electrical shock). Turn off ac power when making or removing
connections to the power supply. Where maintenance can be performed without power applied, the power
should be removed.
a.
b.
c.
d.
e.
f.
Unplug the line cable and remove the top cover by removing the two screws.
Slide the cover to the rear.
Plug a control board test connector A2P7 onto the A2J7 card-edge fingers.
Turn OVERVOLTAGE ADJUST control A3R97 fully clockwise.
Disconnect all loads from output terminals.
Connect power supply for local sensing, and ensure that MODE switches are set as shown below.
g.
h.
i.
Reconnect the line cable and turn on ac power.
Allow unit to warm up for 30 minutes.
At the beginning of each calibration procedure, the power supply should be in its power-off state, with no external
circuitry connected except as instructed.
The POWER LIMIT adjustment (A2R25) must be adjusted at least coarsely before many of the calibration procedures
can be performed. If you have no reason to suspect that the Power Limit circuit is out of adjustment, do not disturb its
setting. Otherwise, center A2R25 before you begin to calibrate the power supply.
j.
Table 2-2. Calibration Procedure
TEST
Meter F/S
Adjust.
Resistance
Programming
F/S
Adjust.
TESTED
VARIABLE
Meter Ref.
Voltage
Prog. Voltage
TEST POINTS
6010A, 6012B
A2J3 pin 7 ( + )
A2J3 pin 10 (-)
6011A, 6015A
A2J3 pin 6 ( + )
A2J3 pin 9 (-)
VP ( + )
P(-)
TEST SEQUENCE AND ADJUSTMENTS
a.
b.
a.
b.
c.
12
Connect DVM across test points and turn on
ac power.
Adjust A2R24 to obtain the voltage range
specified in the results.
Connect a 2KΩ 0.01%, ¼W resistor and
DVM between test points.
Set MODE switch as in Figure 2-1 and turn on
ac power.
Adjust A2R23 to obtain the voltage range
specified in the results.
EXPECTED
RESULTS
0.5V ± 50µV
2.5V ±4mV
Table 2-2. Calibration Procedure (continued)
TEST
V-MON
Zero
Adjust.
TESTED
VARIABLE
V-MON
TEST POINTS
VM ( + )
M(-)
TEST SEQUENCE AND ADJUSTMENTS
a.
b.
c.
d.
Common
Mode
Adjust.
Residual
Output
Voltage
VM( + )
VM ( + )
M(-)
a.
b.
c.
d.
I-MON
Zero
Adjust.
I-MON
IM ( + )
M (-)
e.
f.
a.
b.
c.
I-MON
F/S
Adjust.
I-MON
IM ( + )
M(-)
a.
b.
c.
d.
Rm ( + )
Rm ( - )
e.
Set voltage and current controls to minimum
settings.
Disable power supply as in Initial Setup step i.
Short circuit output terminals and connect the
DVM between test points. Turn on power
supply.
Adjust V-MON Zero trim pot A2R22 to
voltage range specified in the results.
Set voltage and current controls to minimum
and short the unit's sense terminals
( + S & - S).
Attach the DVM across test points and disable
power supply as Initial Setup step i.
Turn on ac power and record the initial
voltage (IR) with DVM across test points.
Remove the local sensing straps and connect a
1Vdc power supply between - S( + ) and –
OUT( - ). See Figure 2-1.
Adjust A2R21 to the voltage range specified.
Remove the 1V supply and replace jumpers.
Set voltage and current controls to minimum.
Disable power supply as in Initial Setup step I
and short output terminals. Turn on ac power.
Connect DVM across test points and adjust
I-MON Zero trim pot A2R8 as shown in
results.
Perform I-MON Zero Adjust before
proceeding .
Connect a 0.010Ω (6010A), 0.0005Ω (6011A)
0.0001Ω (6012B), current monitoring resistor
Rm across the output terminals.
Turn on ac power and using the “Display
Setting”, set current control to 17A (6010A),
120A (6011A), 50A (6012B), 5A (6015A),
and voltage control to 5V.
Connect DVM across test points and take an
initial reading (IR).
Connect DVM across Rm monitoring
terminals and adjust A2R9 as shown in the
results.
EXPECTED
RESULTS
0 ± 80µV
IR* ±80µV
IR* ±40µV
(6015A)
0± 100µV
IR*
0.034 IR*±
33.5µV (6010A,
6015A)
0.012 IR*
±40µV (6011A,
6012B)
*IR = Initial Reading
13
Table 2-2. Calibration Procedure (continued)
TEST
Power
Limit
Adjust.
TESTED
VARIABLE
V(OUT)
I(OUT)
TEST POINTS
TEST SEQUENCE AND ADJUSTMENTS
a.
b.
Perform I-MON F/S Adjust before
proceeding.
Connect the unit to the ac power line via a
variable transformer. Set input power rail to
240Vdc; DVM ( + ) on rear of A1R3 and
DVM (-) to rear of A1R1. Note that power rail
must be maintained at 240Vdc during
calibration.
WARNING
The inner cover must be removed to connect the
voltmeter. Disconnect the power line and wait two
minutes before connecting or disconnecting the
voltmeter.
14
c.
Connect a 3.8Ω (6010A), 0.066Ω (6011A),
0.44Ω (6012B), 40Ω (6015A) resistor or an
electronic load across the unit's output
terminals.
d.
Set the load for 18A (6010A), 120A (6011A),
50A (6012B), 5A (6015A), in CC mode, and
turn A2R25 (lower knee) fully counter
clockwise.
e.
Turn on power supply and set voltage at 65V
(6010A), 8V (6011A), 22V (6012B), 204V
(6015A), and current at 17.5A (6010A), 121A
(6011A), 51A (6012B), 5.1A (6015A), using
DISPLAY SETTINGS.
f.
Turn A2R25 clockwise until CV LED lights.
Output should be 65V ± 0.6V (6010A), 8
±0.08V (6011A), 22 ±0.2V (6012B), 204V
(6015A), and 17A (6010A), 120A (6011A)
51A (6012B), 5.1A (5015A) in CV mode.
g.
Turn off ac power and replace the 3.8Ω
(6010A), 0.066Ω (6011A), 0.44Ω (6012B),
40Ω (6015A), resistor with a 38Ω (6010A),
0.36Ω (6011A), 3.3Ω (6012B), 250Ω
(6015A), resistor or reset electronic load for
5.5A (6010A), 55A (6011A), 18.2A (6012B)
in CC mode.
EXPECTED
RESULTS
Table 2-2. Calibration Procedure (continued)
TEST
Power Limit
Adjust
(continued)
TESTED
VARIABLE
TEST POINTS
TEST SEQUENCE AND ADJUSTMENTS
h.
Turn A2R26 (upper knee) fully counter
clockwise. Turn on the supply and set voltage
at 200V (6010A), 20V (6011A), 60V
(6012B), 500V (6015A), and current at 5.25A
(6010A), 56A (6011A), 19A (6012B) 2.25A
(6015A), using DISPLAY SETTINGS.
i.
Turn A2R26 (upper knee) clockwise until CV
LED lights. Output should be 200 ± 2V
(6010A), 20 ±0.5V (6011A), 60 ±0.4V
(6012B), and 5.25A (6010A), 55A (6011A),
18.2A (6012B), 2.2A (6015A), in CV mode.
EXPECTED
RESULTS
Figure 2-1. Common Mode Setup
15
Table 2-3. Guide to Recalibration After Repair
Printed Circuit
Board
A1 Main Board
Block Name
Circuit Within
A1 Main Board
A5 Diode Board
A2 Control Board
A2 Control Board
A2 Control Board
A2 Control Board
A2 Control Board
A2 Control Board
1.
2.
3.
Constant Voltage
(CV) Circuit
Constant Voltage
(CV) Circuit
Constant Current
(CC) Circuit
Power Limit
Comparator
Bias Power Supplies
All Except Current
Source
Current Source
Ref.
Designator
R11
R13 (6011A)
T1, T2
CR4
CR5, CR1 (6011A)
All
Perform These
Procedures*
3 then 4
5
5
1 then 2
All
6
All
3 then 4
All
5
± 15V Supplies
All
All
U7, R84, R85, R24 7
* Code To Calibration Procedure To Be Performed
4. I-MON Full Scale (F/S) Calibration
V-MON Zero Calibration
5. Power Limit Calibration
Common-Mode Calibration
6. Resistance Programming Full Scale (F/S) Calibration
I-MON Zero Calibration
7. Meter Full Scale (F/S) Calibration
Performance Tests
The following paragraphs provide test procedures for verifying the unit's compliance with the specifications of Table 1-1 in
the Operating Manual. Please refer to CALIBRATION PROCEDURE or TROUBLESHOOTING if you observe
out-of-specification performance.
Measurement Techniques
Setup For All Tests. Measure the DC output voltage directly at the + S and - S terminals. Connect unit for local sensing,
and ensure that MODE switches are set as shown below. Select an adequate wire gauge for load leads using the procedures
given in the Operating Manual for connecting the load.
Electronic Load. The test and calibration procedures use an electronic load to test the unit quickly and accurately. If an
electronic load is not available, you may substitute:
3.5Ω 1000W load resistor (6010A)
0.4Ω 1000W load resistor (6011A)
0.4Ω 1000W load resistor (6012B)
250Ω 1000W load resistor (6015A)
16
for the electronic load in the following tests:
CV Source Effect (Line Regulation)
CC Load Effect (Load Regulation)
Temperature Coefficient (6015A)
Drift (stability ) (6015A)
You may substitute:
40Ω 1000W load resistor (6010A)
0.058Ω 1000W load resistor (6011A)
3.4Ω 1000W load resistor (6012B)
40Ω 1000W load resistor (6015A)
in these tests:
CV Load Effect (Load Regulation)
CV PARD (Ripple and Noise)
CC Source Effect (Line Regulation)
CC PARD (Ripple and Noise)
The substitution of the load resistor requires adding a load switch to open and short the load in the CC or CV load
regulation tests. The load transient recovery time test procedure is not amenable to modification for use with load resistors.
An electronic load is considerably easier to use than a load resistor. It eliminates the need for connecting resistors or
rheostats in parallel to handle the power, it is much more stable than a carbon-pile load, and it makes easy work of
switching between load conditions as is required for the load regulation and load transient-response tests.
Current-Monitoring Resistor Rm. To eliminate output current measurement error caused by voltage drops in the leads
and connections, connect the current-monitoring resistor between -OUT and the load as a four-terminal device. Figure 2-2
shows correct connections. Select a resistor with stable characteristics:
0.010, 0.02% accuracy, 30 ppm/°C (6010A)
0.0005Ω, 0.05% accuracy, 30ppm/°C (6011A)
0.0010Ω, 0.05% accuracy, 30ppm/°C (6012B)
0.010Ω, 0.02% accuracy, 30ppm/°C (6015A)
or lower temperature coefficient and a current rating of:
17A (6010A).
120A (6011A).
50A (6012B)
>5A (6015A)
Figure 2-2. Current-Monitoring Resistor Setup
17
Constant Voltage (CV) Tests
CV Setup. If more than one meter or a meter and an oscilloscope are used, connect each to the + S and - S terminals by a
separate pair of leads to avoid mutual coupling effects. Connect only to + S and -S (except for peak-to-peak PARD)
because the unit regulates the output voltage between + S and - S, not between + OUT and -OUT. Use coaxial cable or
shielded 2-wire cable to avoid pickup on test leads. For all CV tests set the output current at full output to assure CV
operation.
Load Effect (Load Regulation). Constant-voltage load effect is the change in dc output voltage (Eo) resulting from a
load-resistance change from open-circuit to full-load. Full-load is the resistance which draws the maximum rated output
current at voltage Eo. Proceed as follows:
a. Connect the test equipment as shown in Figure 2-3. Operate the load in constant resistance mode (Amps/Volt) and set
resistance to maximum.
b. Turn the unit's power-on, and turn up current setting to full output.
c. Turn up output voltage to:
60Vdc (6010A)
7.0Vdc (6011A)
20.0Vdc (6012B)
200Vdc (6015A)
as read on the digital voltmeter.
Figure 2-3. Basic Test Setup
d.
e.
f.
18
Reduce the resistance of the load to draw an output current of:
17.0Adc (6030A)
120Adc (6011A)
50Adc (6012B)
5.0Adc (6015A)
Check that the unit's CV LED remains lighted.
Record the output voltage at the digital voltmeter.
Open-circuit the load.
g.
When the reading settles, record the output voltage again. Check that the two recorded readings differ no more than:
± 0.011Vdc (6010A)
± 0.0037Vdc (6011A)
± 0.007Vdc (6012B)
± 0.033Vdc (6015A)
Source Effect (Line Regulation). Source effect is the change in dc output voltage resulting from a change in ac input
voltage from the minimum to the maximum value as specified in Input Power Requirements in the Specifications Table, in
the Operating Manual. Proceed as follows:
a. Connect the test equipment as shown in Figure 2-3. Operate the load in constant resistance mode (Amps/Volt) and set
resistance to maximum.
b. Connect the unit to the ac power line through a variable autotransformer which is set for low line voltage (104Vac for
120Vac).
c. Turn the unit's power-on, and turn up current setting to full output.
d. Turn up output voltage to:
60.0Vdc (6010A)
20.0Vdc (6011A)
20.0Vdc (6012B)
500Vdc (6015A)
as read on the digital voltmeter.
e. Reduce the resistance of the load to draw an output current of:
17.0Adc (6010A)
50Adc (6011A)
50Adc (6012B)
2.0Adc (6015A)
Check that the unit's CV LED remains lighted.
f. Record the output voltage at the digital voltmeter.
g. Adjust autotransformer to the maximum for your line voltage.
h. When the reading settles record the output voltage again. Check that the two recorded readings differ no more than:
± 0.011Vdc (6010A)
± 0.004Vdc (6011A)
± 0.005Vdc (6012B)
± 0.063Vdc (6015A)
PARD (Ripple And Noise). Periodic and random deviations (PARD) in the unit's output-ripple and noise-combine to
produce a residual ac voltage superimposed on the dc output voltage. Constant-voltage PARD is specified as the
root-mean-square (rms) or peak-to-peak (pp) output voltage in a frequency range of 20Hz to 20MHz (10MHz, 6010A).
RMS Measurement Procedure. Figure 2-4 shows the interconnections of equipment to measure PARD in Vrms. To
ensure that there is no voltage difference between the voltmeter's case and the unit's case, connect both to the same ac
power outlet or check that the two ac power outlets used have the same earth-ground connection.
Use the common-mode choke as shown to reduce ground-loop currents from interfering with measurement. Reduce noise
pickup on the test leads by using 50Ω coaxial cable, and wind it five turns through the magnetic core to form the
common-mode choke. Proceed as follows:
a. Connect the test equipment as shown in Figure 2-4. Operate the load in constant resistance mode (Amps/Volt) and set
resistance to maximum.
b. Turn the unit's power-on, and turn up current setting to full output.
c. Turn up output voltage to:
60Vdc (6010A)
7Vdc (6011A)
60Vdc (6012B)
200Vdc (6015A)
19
d.
e.
Reduce the resistance of the load to draw an output current of:
17.0Adc (6010A)
120Adc (6011A)
17.5Adc (6012B)
5.0Adc (6015A)
Check that the unit's CV LED remains lighted.
Check that the rms noise voltage at the true rms voltmeter is no more than:
22mV rms (6010A)
8.0mV rms (6011A)
8.0mV rms (6012B)
50mV rms (6015A)
Figure 2-4. RMS Measurement Test Setup, CV PARD Test
Peak Measurement Procedure. Figure 2-5 shows the interconnections of equipment to measure PARD in Vpp. The
equipment grounding and power connection instructions of PARD rms test apply to this setup also. Connect the
oscilloscope to the + OUT and - OUT terminals through 0.01µF blocking capacitors to protect the oscilloscope's input from
the unit's output voltage. To reduce common-mode noise pickup, set up the oscilloscope for a differential, two-channel
voltage measurement. To reduce normal-mode noise pickup, use twisted, 1 meter or shorter, 50Ω coaxial cables with
shields connected to the oscilloscope case and to each other at the other ends. Proceed as follows:
a.
b.
c.
20
Connect the test equipment as shown in Figure 2-5. Operate the load in constant resistance mode (Amps/Volt) and set
resistance to maximum.
Turn the unit's power-on, and turn up current setting to full output.
Turn up output voltage to:
60Vdc (6010A)
7.0Vdc (6011A)
d.
e.
f.
60Vdc (6012B)
200Vdc (6015A)
Reduce the resistance of the load to draw an output current of:
17.0Adc (6010A)
120Adc (6011A)
17.5Adc (6012B)
5.0Adc (6015A)
Check that the unit's CV LED remains lighted.
Set the oscilloscope's input impedance to 50Ω and bandwidth to 20MHz. Adjust the controls to show the 20KHz and
higher frequency output-noise waveform of Figure 2-6.
Check that the peak-to-peak is no more than:
50mV (6010A)
50mV (6011A)
50mV (6012B)
160mV (6015A)
Figure 2-5. Peak-To-Peak Measurement Test Setup, CV PARD Test
Load Transient Recovery Time. Specified for CV operation only; load transient recovery time is the time for the output
voltage to return to within a specified band around its set voltage following a step change in load.
Use the equipment setup of Figure 2-3 to display output voltage transients while switching the load between 10% with the
output set at:
60Vdc (6010A)
7Vdc (6011A)
20Vdc (6012B)
200Vdc (6015A)
21
6010A
6011A
NOT APPLICABLE
6012B
6015A
Figure 2-6. 20KHz Noise, CV Peak-to-Peak PARD
Proceed as follows:
a.
b.
c.
d.
e.
f.
22
Connect the test equipment as shown in Figure 2-3. Operate the load in constant-current mode and set for minimum
current.
Turn the unit's power-on, and turn up current setting to full output.
Turn up output voltage to:
60Vdc (6010A)
7.0Vdc (6011A)
20.0Vdc (6012B)
200Vdc (6015A)
as read on the digital voltmeter.
Set the load to vary the load current between:
15 and 17Adc (6010A)
108 and 120Adc (6011A)
45 and 50Adc (6012B)
4.5 and 5.0Adc (6015A)
at a 30Hz rate for the 10% RECOVERY TEST.
Set the oscilloscope for ac coupling, internal sync and lock on either the positive or negative load transient.
Adjust the oscilloscope to display transients as in Figure 2-7.
g.
Check that the pulse width of the transient pulse is no more than:
150mV/2ms (6010A)
100mV/2ms (6011A)
100mV/2ms (6012B)
200mV/5ms (6015A)
6010A
6011A
6012B
6015A
Figure 2-7. Load Transient Recovery Waveform
Temperature Coefficient. Temperature coefficient (TC) is the change in output voltage for each °C change in ambient
temperature with constant ac line voltage, constant output voltage setting and constant load resistance. Measure temperature
coefficient by placing the unit in an oven, varying the temperature over a range within the unit's operating temperature range,
and measuring the change in output voltage. Use a large, forced air oven for even temperature distribution. Leave the unit at
each temperature measurement for half hour to ensure stability in the measured variable. Measure the output voltage with a
stable DVM located outside the oven so voltmeter drift does not affect the measurement accuracy. To measure offset TC,
repeat the procedure with output voltage set to 0.10Vdc.
Proceed as follows:
a.
b.
c.
d.
Connect DVM between +S and -S.
Place power supply in oven, and set temperature to 30°C.
Turn the unit's power-on and turn up current setting to full output.
Turn up output voltage to the following:
23
e.
f.
g.
h.
200Vdc (6010A)
20.0Vdc (6011A)
60.0Vdc (6012B)
500Vdc (6015A)
as read on the DVM.
After 30 minutes stabilization, record the temperature to the nearest 0.1°C. Record the output voltage on the DVM.
Set oven temperature to 50°C.
After 30 minutes stabilization, record the temperature to the nearest 0.1°C. Record output voltage.
Check that the magnitude of the output voltage change is no greater than
620mV.(6010A)
80mV (6011A)
176mV (6012B)
1.6V (6015A)
Drift (Stability). Drift is the change in output voltage beginning after a 30-minute warm-up during 8 hours operation with
constant ac input line voltage, constant load resistance and constant ambient temperature. Use a DVM and record the output at
intervals, or use a strip-chart recorder to provide a continuous record. Check that the DVM's or recorder's specified drift during
the 8 hours will be no more than 0.001%. Place the unit in a location with constant air temperature preferably a large forced-air
oven set to 30°C and verify that the ambient temperature does not change by monitoring with a thermometer near the unit.
Typically the drift during 30 minute warm-up exceeds the drift during the 8-hour test. To measure offset drift, repeat the
procedure with output voltage set to 0.10Vdc.
a.
b.
c.
d.
e.
Connect DVM between + S and - S.
Turn the unit's power-on and turn up current setting to full output.
Turn up output voltage to:
200Vdc (6010A)
20Vdc (6011A)
60.0Vdc (6012B)
500Vdc (6015A)
as read on the digital voltmeter.
After a 30 minute warmup, note reading on DVM.
The output voltage should not deviate more than
77mV (6010A)
9mV (6011A)
23mV (6012B)
190mV (6015A)
from the reading obtained in step d over a period of 8 hours.
Constant Current (CC) Tests
CC Setup. Constant-current tests are analogous to constant-voltage tests, with the unit's output short circuited and the
voltage set to full output to assure CC operation. Follow the general setup instructions on Page 16.
Load Effect (Load Regulation). Constant current load effect is the change in dc output current (Io) resulting from a
load-resistance change from short-circuit to full-load, or full-load to short-circuit. Full-load is the resistance which develops
the maximum rated output voltage at current Io. Proceed as follows:
a.
b.
c.
24
Connect the test equipment as shown in Figure 2-3. Operate the load in constant resistance mode (Amps/Volt) and set
resistance to minimum.
Turn the unit's power-on, and turn up voltage setting to full output.
Turn up output current to:
5.0Adc (0.050Vdc across Rm) (6010A) Check that the AMPS display reads about 5 amps.
50Adc (0.25Vdc across Rm) (6010A) Check that the AMPS display reads about 50 amps.
d.
e.
f.
g.
h.
17.5Adc (0.0175Vdc across Rm) (6012B) Check that the AMPS display reads about 17.5 amps.
2Adc (0.20Vdc across Rm) (6015A) Check that the AMPS display reads about 2 amps.
Increase the load resistance until the output voltage at +S and -S increases to:
200Vdc (6010A)
20Vdc (6011A)
60Vdc (6012B)
500Vdc (6035A)
Check that the CC LED is lighted and AMPS display still reads ≈ current setting.
Record voltage across Rm.
Short circuit the load.
When the reading settles (≈ 10s), record the voltage across Rm again. Check that the two recorded readings differ no
more than:
0.105mVdc (6010A)
± 0.010mVdc (6011A)
± 0.0118mVdc (6012B)
± 3.4mVdc (6015A)
Disconnect the short across the load.
Source Effect (Line Regulation). Constant current source effect is the change in dc output current resulting from a
change in ac input voltage from the minimum to the maximum values listed in the Specifications Table in the Operating
Manual. Proceed as follows:
a. Connect the test equipment as shown in Figure 2-3. Operate the load in constant resistance mode (Amps/Volt) and set
resistance to minimum.
b. Connect the unit to the ac power line through a variable autotransformer set for low line voltage (e.g. 104Vac for
120Vac).
c. Switch the unit's power-on and turn up output voltage setting to full output.
d. Turn up output current to:
17.0Adc (6010A)
120Adc (6011A)
50Adc (6012B)
5.0Adc (6015A)
Check that the AMPS display reads ≈ current setting.
e. Increase the load resistance until the output voltage between + S and - S increases to:
60Vdc (6010A)
7.0Vdc (6011A)
20.0Vdc (6012B)
200Vdc (6035A)
Check that the CC LED is still on and the AMPS display still reads ≈ current setting.
f. Record the voltage across Rm.
g. Adjust autotransformer to the maximum for your line voltage.
h. When the reading settles record the voltage across Rm again. Check that the two recorded readings differ no more than:
± 0.067mVdc (6010A)
± 0.018mVdc (6011A)
± 0.015mVdc (6011A)
± 18mVdc (6015A)
PARD Ripple And Noise. Periodic and random deviations (PARD) in the unit's output (ripple and noise) combine to
produce a residual ac current as well as an ac voltage super-imposed on the dc output. The ac voltage is measured as
constant-voltage PARD. Constant-current PARD is specified as the root-mean-square (rms) output current in a frequency
range 20Hz to 20MHz with the unit in CC operation. To avoid incorrect measurements, with the unit in CC operation,
caused by the impedance of the electronic load at noise frequencies, use a:
0.4Ω (6010A)
0.058Ω (6011A)
0.4Ω (6012B)
40Ω (6015A)
25
load resistor that is capable of safely dissipating 1000 watts. Proceed as follows:
a. Connect the test equipment as shown in Figure 2-8.
b. Switch the unit's power-on and turn the output voltage all the way up.
c. Turn up output current to:
17.0Adc (6010A)
120Adc (6011A)
50Adc (6012B)
5.0Adc (6015A)
Check that the unit's CC LED remains lighted.
d. Check that the rms noise current measured by the current probe and rms voltmeter is no more than:
15mA rms (6010A).
120mA rms (6011A)
25mA rms (6012B)
50mA rms (6015A)
Figure 2-8. CC PARD Test Setup
26
3
Troubleshooting
Maintenance described herein is performed with power supplied to the instrument, and protective covers
removed. Such maintenance should be performed only by service-trained personnel who are aware of the
hazards involved (for example, fire and electrical shock). Where maintenance can be performed without
power applied, the power should be removed.
Introduction
Before attempting to troubleshoot this instrument, ensure that the fault is with the instrument itself and not with an
associated circuit. The performance test enables this to be determined without having to remove the covers from the supply.
The most important aspect of troubleshooting is the formulation of a logical approach to locating the source of trouble. A
good understanding of the principles of operation is particularly helpful, and it is recommended that Chapter 4 of this
manual be reviewed before attempting to troubleshoot the unit. Often the user will then be able to isolate a problem simply
by using the operating controls and indicators. Once the principles of operation are understood, refer to the following
paragraphs.
Table 2-1 lists the test equipment for troubleshooting. Chapter 6 contains schematic diagrams and information concerning
the voltage levels and waveforms at many of the important test points. Most of the test points used for troubleshooting the
supply are located on the control board test "fingers", which are accessible close to the top of the board. See Table 3-1.
If a component is found to be defective, replace it and re-conduct the performance test. When a component is replaced,
refer to Calibration Procedure (Chapter 2). It may be necessary to perform one or more of the adjustment procedures after a
component is replaced.
Initial Troubleshooting Procedures
If a problem occurs, follow the steps below in sequence:
a.
b.
c.
d.
Check that input power is available, and check the power cord and rear-panel circuit breaker.
Check that the settings of mode switch A2S1 are correct for the desired mode of operation. (See Operating Manual).
Check that all connections to the power supply are secure and that circuits between the supply and external devices are
not interrupted.
If the power supply fails turn-on self-test or gives any other indication of malfunction, remove the unit from the
operating system before proceeding with further testing.
Some circuits on the power mesh are connected directly to the ac power line. Exercise extreme caution
when working on energized circuits. Energize the supply through an isolation transformer to avoid
shorting ac energized circuits through the test instrument's input leads. The isolation transformer must
have a power rating of at least 4KVA. During work on energized circuits, the safest practice is to
disconnect power, make or change the test connections, and then re-apply power.
Make certain that the supply's ground terminal (┴) is securely connected to an earth ground before applying
power. Failure to do so will cause a potential shock hazard that could result in personal injury.
27
Table 3-1. Control Board Test Connector, A2J7
PIN NO.
SIGNAL NAME
Digital-Circuits Bias & Reference Voltages
24
+5V
22
+ 20V(5V UNREG)
14
2.5V ref
6
0.5V ref
Analog-Circuits Bias Voltages
2
+ 15V
21
- 15V
Vdc
5.0
20.0
2.50
0.50
WAVEFORM/CONDITIONS
with 120Hz & 40KHz ripple
15.0
-15.0
SOURCE
A2Q9 (emitter)
A1CR2, A1CR5
A2U7 (OUT)
A2R84,A2R85, A2R24
A2U11 (OUT)
A2U12 (OUT )
Status Signals
17
CV
16
CC
13
OV
11
DROPOUT
TTL Lo
TTL Lo
TTL Hi
TTL Hi
if in CV operation
if in CC operation
if not OVP shutdown
if ac mains okay
A2Q2 (collector)
A2Q1 (collector)
A2U15-13
A2U15-10
12
TTL Hi
if not overtemp shutdown
A4TS1,A5TS1
10µs TTL pulses, 20KHz
1.7µs TTL pulses, 20KHz
½ sawtooth, 20KHz
while not down programming
A2U16-5
A2U15-1
A2CR27 (cathode)
A2CR17, CR31(anode)
e.g.: 2Vdc if OVP set to 200
voltage output (6010A)
A3R97 (wiper)
if +5V bias OK
A2UQ11-4
OT
Control Signals
25
PWM OFF
26
PWM ON
18
Ip MONITOR
15
DOWN PROGRAM
7
OVP PROGRAM
19
PCLR
Commons & Current-Monitor
4
L COMMON
9
M COMMON
10
I-TEST
3
20
NOT USED
Ip-SET
28
TTL Hi (6010A, 6015A)
1.2-3.0 (6011A, 6012B)
1/100 OVP (6010A)
1/10 OVP (6011A)
1/30 OVP (6012B)
1/100 OVP (6015A)
TTL Hi
0.0
≈0.0017 ( Iout)
≈0.9
common return for all bias
voltages, and status and control
signals
common return for 2.5V ref.
and 0.5V ref.
inboard-side monitoring res.
A1R11
AlR13 (6011A))
A2R25 wiper
Electrostatic Protection
The following caution outlines important precautions which should be observed when working with static sensitive
components in the power supply.
This instrument uses components which can be damaged by static charge. Most semiconductors can
suffer serious performance degradation as a result of static charges, even though complete failure may
not occur. The following precautions should be observed when handling static-sensitive devices.
a.
b.
c.
d.
e.
f.
Always turn power off before removing or installing printed-circuit boards.
Always stored or transport static-sensitive devices (all semiconductors and thin-film devices) in conductive material.
Attach warning labels to the container or bag enclosing the device.
Handle static-sensitive devices only at static-free work stations. These work stations should include special conductive
work surfaces (such as Agilent Part No. 9300-0797) grounded through a one-megohm resistor. Note that metal table
tops and highly conductive carbon-impregnated plastic surfaces are too conductive; they can act as large capacitors and
shunt charges too quickly. The work surfaces should have distributed resistance of between 106and 10l2 Ω per square.
Ground all conductive equipment or devices that may come in contact with static-sensitive devices or subassemblies
containing same.
Where direct grounding of objects in the work area is impractical, a static neutralizer should be used (ionized air
blower directed at work). Note that this method is considerably less effective than direct grounding and provides less
protection for static-sensitive devices.
While working with equipment on which no point exceeds 500 volts, use a conductive wrist strap in contact with skin.
The wrist strap should be connected to ground through a one-megohm resistor. A wrist strap with insulated cord and
built-in resistor is recommended, such as 3M Co. No. 1066 (Agilent Part No. 9300-0969 (small) and 9300-0970
[large]).
Do not wear a conductive wrist strap when working with potentials in excess of 500 volts; the one-megohm
resistor will provide insufficient current limiting for personal safety.
g.
All grounding (device being repaired, test equipment, soldering iron, work surface, wrist strap, etc.) should be done to
the same point.
h. Do not wear nylon clothing. Keep clothing of any kind from coming within 12 inches of static-sensitive devices.
i. Low-impedance test equipment (signal generators, logic pulsers, etc.) should be connected to static-sensitive inputs
only while the components are powered.
j. Use a mildly activated rosin core solder (such as Alpha Metal Reliacor No. 1, Agilent Part No. 8090-0098) for repair.
The flux residue of this type of solder can be left on the printed circuit board. Generally, it is safer not to clean the
printed-circuit board after repair. Do not use Freon or other types of spray cleaners. If necessary, the printed-circuit
board can be brushed using a natural-bristle brush only. Do not use nylon-bristle or other synthetic-bristle brushes. Do
not use high-velocity air blowers (unless ionized).
k. Keep the work area free of non-conductive objects such as Styrofoam-type cups, polystyrene foam, polyethylene bags,
and plastic wrappers. Non-conductive devices that are necessary in the area can be kept from building up a static
charge by spraying them with an anti-static chemical (Agilent Part No. 8500-3397).
l. Do not allow long hair to come in contact with static-sensitive assemblies.
m. Do not exceed the maximum rated voltages specified for the device.
Repair and Replacement
Repair and replacement of most components in the power supply require only standard techniques that should be apparent
to the technician. The following paragraphs provide instructions for removing certain assemblies and components for which
the procedure may not be obvious upon inspection.
29
To avoid the possibility of personal injury, remove the power supply from operation before opening the
cabinet. Turn off ac power and disconnect the line cord, load, and remote sense leads before attempting
any repair or replacement.
When replacing any heatsink-mounted components except thermostat, smear a thin coating of heatsink
compound between the component and heatsink. If a mica insulator is used, smear a thin coating of
heatsink compound on both sides of the mica insulator.
Do not use any heatsink compound containing silicone, which can migrate and foul electrical contacts
elsewhere in the system. An organic zinc oxide cream, such as American Oil and Supply Company
Heatsink Compound #100, is recommended.
Most of thc attaching hardware in this unit is metric. The only non-metric (sometimes called English or
inch) fittings are listed below. Be careful when both types of screws are removed not to get them
mixed up.
a.
b.
c.
Screws that secure the input and output capacitors to A1 main board and output bus.
Rear-panel circuit breaker.
Rear-panel ground binding post.
Top Outside Cover Removal. Remove the two top rear screws using a Size 2, Pozidriv screwdriver. A Phillips head
screwdriver does not fully seat into Pozidriv screws and risks stripping the heads. Remove the top cover by sliding it to the
rear and lifting at the front.
Bottom Cover Removal. Remove the handles from both sides of the unit and remove the bottom cover by sliding it to the
rear. Use a Phillips head #2 screwdriver to remove the handle screws. You do not need to remove the unit's feet.
Inside Top Cover Removal. The unit includes an inside cover which secures the vertical board assemblies. Remove the
inside cover for repair but not for calibration. Remove the nine mounting screws (Pozidriv, M4x7) – two in the left side,
three on the right side, and four on top. Remove the inside cover by lifting at the front edge.
When installing the inside cover, insert it first at the right side. While holding it tilted up at the left, reach through the
cutouts in the cover and fit the top tabs of the A2 control board into the mating slots in the cover. Then repeat the process
for the A4 FET board, and the A5 Diode board. Press the inside cover down firmly while tightening screws that secure
cover to chassis. Be careful when replacing printed-circuit assemblies and covers not to bend any boards or components.
A2 Control Board Removal
After removing the inside cover, unplug the W1 ribbon cable at the front edge of the A2 control board and unplug the W7
and W8 ribbon cables from the lower center of the A2 control board. Remove the A2 board by lifting first at the front edge
and than pulling it up and out of the unit.
When installing the A2 board, insert it first at the rear of the unit. While holding it tilted up at the front, fit the A2TB1
terminal strip into the mating cutout in the rear panel. Then lower the A2 board's bottom tabs into the mating slots on the
chassis. Re-install the W1, W7, and W8 ribbon cables.
A4 FET Board Removal
After removing the inside cover, remove the A4 FET board by lifting, using the large aluminum heatsink as a handle. One
connector and one tab holds the A4 board at its bottom edge.
30
When installing the A4 power mesh board, lower it vertically, placing its tab into the A1 board slot first, align the connector
and press in place.
A5 Diode Board Removal
After removing the cover, remove the A5 Diode board by first removing the two cover screws (Pozidriv) that hold
heatsinks to the A1 board, then lift vertically to remove the A5 Diode board from the connector.
When installing the A5 Diode board, lower it into the mating connector on the A1 board, then install a screw between each
heatsink and Al board.
A3 Front Panel Board Removal
Remove the A3 front panel board by first removing the entire front panel assembly. You do not need to remove the top
cover. Follow this procedure:
a. Remove the top plastic insert by prying up with a flat-blade screwdriver.
b. Remove the four front panel assembly mounting screws (Phillips 6-32) two on the top and two on the bottom.
c. Gently pull the front panel assembly away from the unit as far as permitted by the connecting cables.
d. Note the locations of the four power-wire connections to the power switch and then unplug the quick-connect plugs.
e. Unplug the W1 ribbon cable from connector A2J3 on the A2 control board.
f. Remove the A3 board from the front panel assembly by removing the six mounting screws (Pozidriv, M4x.7)
Install the A3 Board by reversing the steps above. Connect the power switch wires in the exact locations from which they
were removed. See A1 Main Board Removal.
A1 Main Board Removal
Removing the A1 main board requires removing all the vertical boards except the A3 front panel board, and 17 A1 board
mounting screws, four standoffs, and two bus-bar mounting screws. Component-access cutouts in the bottom inside cover
allow unsoldering most A1 board components for repair without removing the A1 board.
Proceed as follows:
To remove the A1 board, proceed as follows:
a. Remove the A2, A4, and A5 boards according to the above instructions.
b. Remove the AC power cord from the cooling fan and the four AC Input Power wires.
from
L6 (chassis)
RFI filter
Circuit breaker
L6 (chassis)
c.
AC Input Wire
color
white
white/gray
white/brown/gray
white
Terminal Destination
designator
location
P
left rear
N
behind A1K1
L
behind A1K1
A1K1 front armature
Remove the following mounting screws:
2 (1 each) from the output bus bars
7 from the A1 board
4 from transformer AlT2
4 from transformer AlT3
2 from relay AlK1
4 inside-cover mounting posts 5/16 hex
31
d.
Lift the A1 board up and toward the rear, then remove the wires from the front panel switch A3S1.
A1 Designator
A
B
C
D
Wire color
white/gray
gray
white/brown/gray
white/red/gray
A3S1 Position (Rear View)
Upper right
Upper left
Lower left
Lower right
A3 FRONT PANEL ASSEMBLY
REAR VIEW
S1
B-- | --A
C-- | --D
Install the A1 board by reversing the above steps. Be careful to follow the wire color code mentioned above.
Overall Troubleshooting Procedure
Perform the troubleshooting and repair procedures which follow only if you are trained in equipment
service and are aware of the danger from fire and electrical-shock hazards. Some of the procedures include
removing the unit's protective covers which may expose you to potentially lethal electrical shock.
Whenever possible, make test connections and perform service with the power removed.
After performing the Initial Troubleshooting Procedures, focus on developing a logical approach to locating the source of
the trouble. The underlying strategy for the troubleshooting procedures here is to guide you to the faulty circuit nodes
which have improper signals or voltages. It relies on you to identify the particular functional circuit to troubleshoot from
symptom tables and by understanding how the unit works. It then relies on you to discover the defective component or
components which cause the faulty circuit nodes. So, read the BLOCK DIAGRAM overview in Chapter 4 and read the
functional circuit descriptions for the circuits that you suspect may be defective. Then return to this section for help finding
the faulty circuit nodes.
Table 3-1 gives the signals for each of the test points on the control board test connector. This connector is provided in
service kit P/N 5060-2865. The measurements given here include bias and reference voltages as well as power supply status
signals and waveform information. To troubleshoot the power supply the A4 power FET board and A2 control board can be
raised out of the unit using extender boards and cables provided in service kit P/N 5060-2865.
The A4 power FET board should only be raised on its extender when using the Main Troubleshooting
Setup; NEVER when the unit is operated with its normal ( ≈ 300Vdc ) bus voltage. To do so can cause
damage to the unit and is a shock hazard.
Table 3-2 provides troubleshooting information based on the status of the PWM-ON and PWM-OFF signals which drive
the PFETs. This table is used for no-output failures.
Tables 3-3 and 3-4 give measurements for the test points on the A3 front panel board and possible failure symptoms
respectively.
Table 3-5 describes possible symptoms for overall performance failures of the power supply. It is necessary to have a
properly working front panel before using this table.
Chapter 6 contains schematic diagrams and voltage levels, and component location diagrams to help you locate components
and test points.
32
Make most voltage measurements (except DC-to-DC Converter and ac mains-connected circuits) referenced to the unit's
output common. The output common is accessible at rear-panel M terminal. All voltages are ± 5% unless a range is
given.
Using the Tables
Typically there will be two types of power supply failures; no-output and performance failures.
1.
NO-OUTPUT FAILURE: Start with the TROUBLESHOOTING NO-OUTPUT FAILURES section which
references Tables 3-1 and 3-3.
2.
PERFORMANCE FAILURE: If the power supply produces an output but does not perform to specifications, begin by
verifying the measurements at the A2J7 test connector using Table 3-1. Next, verify the front panel by doing the
procedure outlined in the FRONT PANEL TROUBLESHOOTING section. After the front panel has been verified
consult Table 3-5 for the performance failure symptom which seems closest to the one observed and proceed to the
functional circuit given for that failure.
The circuits referenced in Tables 3-2 and 3-5 are derived from functional blocks of circuits in the power supply. These
blocks are given in the Power Supply Blocks section starting on page 40. Troubleshooting information for each block will
include a brief description of the circuit involved. The columns provided in each block are as follows:
NODE:
This column lists the nodes where the measurements should be taken. In some cases this will be
stated as NODE ( + ) and NODE (- ) where the first is the test node and the second is the
reference.
SETUP:
If a certain setup is required for the measurement, it will be given in this column.
MEASUREMENT:
This column indicates what the expected measurement is for the given node.
SOURCE:
If applicable, the components which generate the signal will be provided in this column .
Some blocks will have Input and Output sections. The input section will have a source column to indicate which
components generated the measured signal. The output section will list all the important output signals from that block.
However, because the outputs of one block are the inputs to another, the schematic should be consulted if an output
measurement is incorrect. This will indicate the next circuit block to be trouble shot.
Main Troubleshooting Setup
Figure 3-1 shows the troubleshooting setup for troubleshooting all of the unit except the front panel and initial no output
failures (see page 36). The external power supply provides the unit's internal bus voltage. The ac mains cord connects to the
unit's A1T3 bias transformer via an isolation transformer, thereby energizing the bias supplies, but it does not connect to the
input rectifier and filter because that would create the bus voltage. With the external supply the unit operates as a dc-to-dc
converter. The supply biases the A4Q1, A4Q2, A4Q3 and A4Q4 PFETs with a low voltage rather than the 320Vdc bus
voltage. This protects the PFETs from failure from excess power dissipation if the power-limit comparator or the off-pulse
circuitry are defective. It also reduces the possibility of electrical shock to the troubleshooter.
33
Figure 3-1. Main Troubleshooting Setup
An isolation transformer provides ac voltage that is not referenced to earth ground, thereby reducing the
possibility of accidentally touching two points having high ac potential between them. Failure to use an
isolation transformer as shown in Figure 3-1 will cause the ac mains voltage to be connected directly to
many components and circuits within the power supply, including the FET heatsinks, as well as to the
terminals of the external dc power supply. Failure to use an isolation transformer is a definite
personal-injury hazard.
The troubleshooting setup of Figure 3-1 connects high ac voltage to relay K1, fan B1, fuseholder A1F1, and
other components and circuits along the front of the A 1 main board.
As a convenience in implementing the troubleshooting setup, prepare cord sets as shown in Figure 3-2. This facilitates
connecting the unit's input power rail to the external supply and connecting the bias transformer to the isolation
transformer.
34
Figure 3-2. Modified Mains Cord Set For Troubleshooting
With the mains cord unplugged proceed as follows:
a.
Remove the top cover and the inside cover as described on page 30. Remove fuse A1F1.
Failure to remove fuse AlF1 will result in damage to the unit; damage to the external DC supply and a
shock hazard to you.
b.
c.
Install control board test connector onto the A2J7 card edge fingers.
Connect a 50 Ω, 40W, load resistor to the unit's output terminals.
35
d.
e.
Place the front panel power-on switch in the off position. Remove the ac input cover from the rear panel and connect the
"L" and "N" screws on the barrier block to the output of the external DC supply. If a line cord is already connected to
these terminals, construct an adapter as shown in Figure 3-2 (a), which allows you to connect the cord to the DC supply.
In either case ignore polarity as the unit's rectifying diodes steer the dc power to the correct nodes.
Complete the setup of Figure 3-1 by attaching an ac mains cord to test points J8 (L, black wire) and J7 (N, white wire)
and connect the green ground wire to the unit's case ground terminal or a suitably grounded cabinet screw. See Figure
3-2 (b). Plus the mains cord into an isolation transformer.
Troubleshooting No-Output Failures
Note
The main troubleshooting setup is not used for the No Output Failures and Front Panel troubleshooting
tests.
No-output failures often include failure of the A4Q1 through A4Q4 PFETs and their fuses, A4F1 and A4F2. When either
the off-pulses or the power-limit comparator fails, the PFETs can fail from excessive power dissipation. The strategy for
localizing no-output failures is to check the voltages and waveforms at the control board test connector to predict if that
circuit failure would cause the PFETs to fail. This makes it possible to develop your troubleshooting approach without an
extensive equipment setup. Proceed as follows:
a.
b.
c.
d.
With the mains cord unplugged remove the A4 FET Driver board as described on page 30. Plug in the mains cord and
switch on power.
Using Table 3-1 check the bias voltages, the PWM-OFF, PWM-ON and Ip MONITOR Control signals and other
signals of interest at the A2 control board test fingers, A2J7.
Check for the presence of program voltages, VP and IP, at the rear panel.
Check for presence of the 320Vdc rail voltage between the rear facing end of AlR3 and the rear facing end of AlR1. If
there is no rail voltage, check diode Assembly A1U1.
A1R1, A1R3, and AlU1 connect to the ac mains voltage. Use a voltmeter with both input terminals floating
to measure the rail voltage.
e.
Select the functional circuit for troubleshooting based on your measurements and Table 3-2, which provides direction
based on the status of the PWM OFF and PWM ON signals .
Front Panel Troubleshooting
Troubleshoot the A3 front panel board by first doing the following setup:
a. Remove the top plastic insert from the front frame by prying up with a flat-blade screwdriver.
b. Remove the 4 front panel assembly mounting screws (Phillips 6-32), two on top and two on the bottom.
c. Detach the A3 board from the front panel assembly by removing the 6 mounting screws (Pozidriv, M4x7).
d. Place the A3 board vertically against the supply with a piece of insulating material between. The test connector can
then be attached to the A3 board. The rest of the front panel assembly can stand vertically so that the pots and the
switches can be accessed while troubleshooting.
e. Plug in the mains cord and switch on power.
The ac mains voltage connects directly to the LINE switch and to components and traces at the front of the
A1 main board. Be extremely careful to avoid touching the ac mains voltage.
Start troubleshooting by performing the tests given in Table 3-3. This table provides the measurements for the test points on
the test connector as well as the source components for that measurement. Table 3-4 gives front panel symptoms as well as
the circuits or components that may cause the supply to exhibit those symptoms. Both Tables 3-3 and 3-4 should be used to
check out and troubleshoot the front panel.
36
Table 3-2. No-Output Failures
(Bias supplies and AC turn-on circuit functioning)
Status of PFET on/off-Pulses
PWM-ON
PWM-OFF
DEFECTIVE
A2J7-26
A2J7-25
BOARD
lo
lo
A2
lo
hi
A2 & A4
hi
lo
A2 & A4
hi
hi
A2 & A4
lo
N
A2
N
lo
A2 & A4
hi
N
A2 & A4
N
hi
A2 & A4
N
N
A2 & A4
lo= TTL low
hi= TTL high
CHECK FUNCTIONAL CIRCUITS
Control ckts: CV & CC thru on- & off-Pulse Oneshots *
PWM and DC-to-DC Converter: A4Q1, A4Q2, A4Q3 and A4Q4
probably failed
PWM and DC-to-DC Converter: A4Q1, A4Q2, A4Q3 and A4Q4
probably failed
PWM and DC-to-DC Converter: A4Q1, A4Q2, A4Q3 and A4Q4
probably failed
A2U15A,on-Pulse Oneshot and A2Q11
Off-Pulse Oneshot and DC-to-DC: A4Q1, A4Q2, A4Q3 and A4Q4
probably failed
A2U15A, on-Pulse Oneshot & DC-to-DC: A4Q1, A4Q2, A4Q3, and
A4Q4 probably failed
off-Pulse Oneshot and DC-to-DC: A4Q1, Q4Q2, A4Q3 and A4Q4
probably failed
Power-Limit Comparator and DC-to-DC: A4Q1, A4Q2, A4Q3 and
A4Q4 probably failed
N = normal 20KHz pulse train, TTL levels
* Decide which to troubleshoot -- the CV Circuit, the CC Circuit, or the PWM and Off-Pulse & On-Pulse Oneshots -- by
measuring the CV CONTROL (A2CR24, cathode) and the CC CONTROL (A2CR11 cathode) voltages. Troubleshoot
whichever is negative, and if neither is negative, troubleshoot the PWM. Make these voltage measurements after you have
implemented the Main Troubleshooting Setup.
Table 3-3. Front Panel Board Tests
.
Pin
No
1
2
3
4
5
Signal Name
+7.5V
-1V
CV VOLTAGE
CC VOLTAGE
VOLTS test
Measurement
7.5V
-1.0V
0-5V
0-5V
-1888 on volts
display
-1888 on amps
display
0-1V
TTL high
6
AMPS test
7
8
VOLTS input
VOLTS low range
9
TTL lo
10
DISPLAY
SETTINGS
DISPLAY OVP
11
12
13
AMPS input
-5V
buffered OVP
0-600mV
-5.0V
0-2.2V
TTL high
Description
Source
Derived from + 15V bias.
Derived from –15V bias.
For 0 to full scale output voltage.
For 0 to full scale output current.
Jumper to + 5V on A3 board.
A3VR2, A3R93
A3R89, A3R94, A3C17
A3U6-6, A3R88, A3CR1
A3U7-1, A3R58
A3U1-37
Jumper to + 5V on A3 board.
A3U2-37
For 0 to full scale output voltage.
If VOLTS display is below 20 volts
(press DISPLAY SETTINGS).
If DISPLAY SETTINGS switch on
front panel is depressed.
If DISPLAY OVP switch on front
panel is depressed.
For 0 to full scale output current.
Derived from -15V bias.
1/30 of OVP voltage setting when
DISPLAY OVP switch is depressed
varies with OVP ADJUST pot.
A3U4-2,3,10
A3U5-13
A3S1,A3R85
A3S2,A3R64
A3R56,A3R58
A3VR1, A3R90
A3U7-7,A3CR5
37
Troubleshooting Bias Supplies
+5V on A2 Control Board. The PWM A2U22 includes a clock generator (40KHz set by A2R170, A2C79, and A2Q10),
and a current limit (2Adc set by 0.15Vdc across A2R172). It turns off each output pulse using the difference between the
voltage at voltage divider A2R161-A2R163 and the 2.5Vdc set by voltage regulator A2U21.
Circuit Included. + 5Vdc bias supply circuitry from connector pin A1J5-1,3 (1,3 both pins) through jumper A2W3 on A2
control board.
Setup. The Main Troubleshooting Setup, page 33. Apply the ac mains voltage to the isolation transformer, and set the
external supply to 0Vdc.
Input:
NODE +
A2J7-22
NODE A2J4-4.
MEASUREMENT
≈ 20Vdc
SOURCE
A1CR2,AlCR5
Outputs
NODE
A2U22-6
A2U22-12,13
A2Q9 (emit)
A2U21 -2
A2R161, A2R163
MEASUREMENT
≈ 2 to 4Vdc sawtooth, 40KHz
≈ 19Vpk, 15µs pulses, 40KHz
≈ 20Vpk, 5µs pulses, 40KHz
2.5Vdc
2.5Vdc
To check if load on + 5V is shorted, remove jumper A2W3
Table 3-4. A3 Front Panel Board Failure Symptoms
SYMPTOMS
Error when pressing DISPLAY SETTINGS
Error in VOLTS or AMPS
DEFECTIVE CIRCUIT
Limits display.
Input ranging or DVMS.
CHECK COMPONENTS
A3U5, A3U8
A3U8,A3U6,A3U4,A3U1,A3U2,
A3U7
A3DS1 through A3DS8
A3R99, A3R100
* One or more display digits out
Display LEDs.
Unable to adjust VOLTAGE or CURRENT
Potentiometers.
or always max
VOLTS decimal point error
Decimal drivers.
A3U3
* Note that the Volts and Amps tests (Table 3-3 pins 5 and 6) verify that all the current and voltage display segments light
except for the decimal points.
Table 3 5. Performance Failure Symptoms
SYMPTOMS
Unexplained OVP shutdowns
DEFECTIVE
BOARD
A2
CHECK FUNCTIONAL CIRCUITS
OVP Circuit, CV Circuit
No current limit
A2
CC Circuit
Max current < 17Adc
A2
CC Clamp, CC Circuit
Max power < specified
A2, A1
Power Limit, 20KHz clock, transformer A1T2
Max voltage < 200Vdc
A2, A1
Cycles on & off randomly
A2, A1
CV Circuit, diodes A1U1, mains voltage select
jumper A1W1
AC-Surge-&-Dropout Detector, Mains Voltage
Select switch A1S2
38
Table 3 5. Performance Failure Symptoms (continued)
SYMPTOMS
CV overshoots
DEFECTIVE
BOARD
A2
CHECK FUNCTIONAL CIRCUITS
A2U5A, A2CR19, A2R62
Output noise ( < 1KHz)
A2, A1
CV Circuit, Input Filter
Output noise ( > 1KHz)
A1, A4
CV regulation, transient response,
programming time
CC regulation
A2, A1
Transformer A1 T2, output Filter, snubbers A4R1
to A4R11, A4R13 to A4R19, A4C1 to A4C4,
A4CR1 to A4CR4
Wrong sensing (paragraph 3-40), low ac mains
voltage, CV Circuit
Low ac mains voltage, CC circuit
CV oscillates with capacitive loads
A2
CC oscillates with inductive loads
A2
A2
A2R61, A2R60, A2R58, A2R59, A2C33, A2R64,
A2R68, A2C36, A2C37, A2U5, A2R65
A2R61, A2R60, A2R58, A2R57, A2C33, A2R19,
A2C11, A2R58, A2C12, A2U4, A2R35, A2C20,
A2R37, A2C17, A2R29, A2C18, A2R31
+15V on A2 Control Board. Voltage regulator A2U11 regulates the voltage across resistor A2R99 to be 1.25Vdc. That
sets the current through zener diode A2VR3 at 7.5mAdc. The output voltage is 1.25Vdc plus 11.7Vdc across A2VR3 plus
the voltage across A2R100.
Circuit Included. + 15Vdc bias supply circuitry from connector pin A2J5-5 through test point A2J7-2 on A2 control board.
Setup. The Main Troubleshooting Setup, page 33. Apply the ac mains voltage to the isolation transformer, and set the
external supply to 0Vdc.
Input:
NODE (+ )
A2C52(+)
NODE ( - )
A2C52(-)
MEASUREMENT
≈ 27Vdc
SOURCE
A1U4 ,AlC15 (+)
A1U4,A1C17 (+) (6011A)
Outputs:
NODE ( + )
A2J7-2
A2J7-2
A2J7-2
A2C50 ( + )
N0DE ( - )
A2U11 (ADJ)
A2VR3 (Anode)
A2VR2 (Anode)
A2C50 ( - )
MEASUREMENT
1.25Vdc
12.9Vdc
6.2Vdc
13.8Vdc
To check if load on + 15V is shorted, remove jumper A2W1 .
-15V on A2 Control Board. Voltage regulator A2U12 regulates the voltage across resistor A2R103 to be 1.25Vdc.
Circuit Included. -15Vdc bias supply circuitry from connector pin A2J5-6 through test point A2J7-21 on A2 control
board.
Setup. The Main Troubleshooting Setup, page 33. Apply the ac mains voltage to the isolation transformer, and set the
external supply to 0Vdc.
39
Input:
NODE ( + )
A2C55(+)
NODE ( - )
A2C55(-)
MEASUREMENT
≈ 27Vdc
SOURCE
A1U4, AlC16 ( - )
A1U4, AlC18 ( - ) (6011A)
Outputs:
NODE ( + )
A2J7-21
A2J7-21
A2C54 ( + )
N0DE ( - )
A2U12-3 (ADJ)
A2VR4 (Anode)
A2C54 ( - )
MEASUREMENT
-1.25Vdc
-12.9Vdc
13.8Vdc
To check if load on -15V is shorted, remove jumper A2W3.
Refer to Down Programmer, page 42, for the + 10.6V bias supply, and refer to OVP Circuit, page 45, for the +2.5V bias
supply.
Power Section Blocks
This section contains the blocks referenced in Tables 3-2 and 3-5.
Troubleshooting AC-Turn-on Circuits
Relay A1K1 closes at 2.5 seconds and DROPOUT goes high at 2.9 seconds after 20V (5V UNREG) reaches about 13Vdc.
DROPOUT high enables the PWM if OVERVOLTAGE, and OVERTEMPERATURE are also high.
Circuits Included. AC-Surge-&-Dropout Detector, Bias Voltage Detector, Delay Circuits, and Relay Driver--all on A2
control board.
Setup. The Main Troubleshooting Setup, page 33. Apply the ac mains voltage to the isolation transformer, and set the
external supply to 0Vdc.
Inputs:
NODE ( + ) *
A2J7-24
A2J7-22
A2U11-16
A2U20-13
SETUP
MEASUREMENT
5.0Vdc
≈ 21Vdc
f.w.rect.,0.8Vpk
TTL sq wave,20KHz
SETUP
cycle power
cycle power
cycle power
MEASUREMENT
≈ 13.5Vdc
≈ 1.4Vdc
transition 0 to 5Vdc at 2.5 sec
hi (5Vdc)
2.9 s burst 1.25KHz sq. wave
one 840ms pulse then hi at 2.5 sec
three 420ms pulses then hi at 2.9 sec
transition lo to hi at 1.7 sec
Outputs:
NODE ( + ) *
A2U17-9
A2U17-14
A2Q11-14
A2Q11-4
A2U9-10
A2U9-15
A2U9-14
A2U9-1
40
cycle power
cycle power
cycle power
cycle power
SOURCE
A2Q9 (emit.)
A1CR2,AlCR5
A1CR3,AlCR4
A2U20-6
A2U15-10
( AC FAULT )
A2Q7-C
( RELAY ENABLE )
* NODE ( - ) = A2J7-4
cycle power
transition lo to hi at 2.9 sec
cycle power
transition 5.0 to 0.3Vdc at 2.5 sec
Troubleshooting PWM & Clock
The inputs to inhibit Gate A2U18A and PWM gate A2U18B are the keys to PWM troubleshooting. The 20KHz clock starts
each PWM output pulse, and the pulse stops when any of the inputs to A2U18A or A2U18B goes low. The PWM is
inhibited and prevented from initiating output pulses as long as any of the seven inputs is low.
Circuit Included. Pulse Width Modulator (PWM), Off-Pulse Oneshot, On-Pulse one-Shot, 20KHz Clock.
Setup. The Main Troubleshooting Setup, page 33. Apply the ac mains voltage to the isolation transformer. Adjust the units
current setting above 1.0Adc. Set the external supply (EXTERNAL) and adjust the unit's voltage setting (INTERNAL) as
instructed below. Use the "DISPLAY SETTINGS" switch to make adjustments to the unit's current or voltage setting.
Inputs:
NODE ( - ) = A2J7-4
NODE ( + )
A2J7-24
A2U18-10
A2U18-12
A2U18-13
A2U18-5
A2U18-2
A2U18-1
SETUP
Set OUTPUT ADJUST
for 1Vdc
MEASUREMENT
5.0Vdc
hi
hi
hi
hi
hi
hi
SOURCE
A2Q9, A2W3
A2U15-10
A2U15-13
A5TS1, A4TS1
A2U18-8
A2U8-2
A2U10-7
Outputs:
NODE ( + )
A2U20-1
A2U20-5
A2U20-6
A2U19-5
A2U19-6
A2U16-5
A2U16-5
A2U16-4
A2U16-4
A2U15-1
A2U15-1
+ OUT
+ OUT
SET VOLTAGE (Vdc)
EXTERNAL
INTERNAL
0
0
0
0
0
0
0
2
0
2
40
2
40
0
40
20
40
0
40
20
40
0
40
20
40
2
MEASUREMENT
TTL sq wave, 320KHz
TTL sq wave, 40KHz (80KHz, 6015A)
TTL sq wave, 20KHz
20KHz
20KHz
10µs pulse, 20KHz
lo
48µs pulse, 20KHz
hi
1.7µs pulse, 20KHz (80Vdc, 6015A)
lo
≈ 40Vdc (UNREGULATED)
14Vdc (6011A, 6012B)
80Vdc (6015A)
20Vdc (CV)
2.0Vdc (6011A, 6012B, 6015A)
41
Troubleshooting DC-To-DC Converter
Parallel NOR gates A4U1, A4U2 and A4U3A act as drivers and switch on FETs A4Q1, Q2, Q3 and Q4 through pulse
transformer A4T1. NOR gate A4U3B turns off the FETs through pulse transformer A4T2 and transistors A4Q5 and A4Q6.
Circuits Included. On-Pulse Driver, Off-Pulse Driver, FET Switches and Drivers on A4 FET board.
Setup. The Main Troubleshooting Setup, page 33. Apply the ac mains voltage to the isolation transformer, and set the
external supply to 40Vdc. Set the unit's output voltage to 20Vdc and current to above 1Adc using "DISPLAY SETTINGS"
switch. Verify that the UNREGULATED LED lights. See Figure 3-3 for waveforms.
Inputs:
NODE ( + )
A2J7-26
(PWM-ON)
A2J7-25
(PWM-OFF)
A4P1-C1
A4Q2-D
NODE ( - )
M
M
A4Q4-S
MEASUREMENT
1.7µs 20KHz pulse
(see Waveform 1)
10µs 20KHz pulse
(see Waveform 2)
10.6Vdc
39Vdc
NODE ( - )
A4Q2-S
A4Q4-S
A4Q4-D
A2J7-4
MEASUREMENT
(see Waveform 3)
(see Waveform 3)
(see Waveform 4)
(see Waveform 5)
M
SOURCE
A2J5-11, A2U15-1, A4P1-A3
A2U16-5, A2J5-13, A4P1-A2
A1U3-2
A1C5 (+), A4P1-22 to 25
A1C1(-), A4P1-16 to 18
Outputs:
NODE ( + )
A4Q1/Q2-G
A4Q3/Q4-G
A4Q2-S
A2J7-18
If you replace the FETs, replace both the FETs and associated drive components as furnished in FET Service Kit, Agilent
Part No. 5060-2866.
The FETs are static sensitive and can be destroyed by relatively low levels of electrostatic voltage.
Handle the A4 FET board and the FETs only after you, your work surface and your equipment are
properly grounded with appropriate resistive grounding straps. Avoid touching the FET's gate and
source pins.
Troubleshooting Down Programmer
The down programmer discharges the output when either PWM OFF is generated or CV ERROR is more negative than
about - 3Vdc. Comparator A5U1 triggers down programming when the voltage at A5U1-5 is less than about 4Vdc.
Circuit Included. Down programmer and 10.6V bias supply on A1 main board.
Setup. The Main Troubleshooting Setup, page 33, except connect the external supply to the unit's + OUT ( + ) and – OUT
( - ) terminals. Apply the ac mains voltage to the isolation transformer. Set the external supply for an output voltage of
10Vdc and set current limit for 2.5 Amps. Set the power supply under test for a voltage setting of 8.0Vdc and current
setting of 2.0Adc using "DISPLAY SETTINGS".
42
Figure 3-3. Waveforms
43
Outputs:
NODE ( + )
A5C3 (+)
A5VR1(K)
A5U1-3
A5CR2(K)
A5CR2(K)
A5U1-1
A5U1-1
+R20
+R20
NODE ( - ) = A2J7-4
EXTERNAL SUPPLY
ON/OFF
ON/OFF
ON/OFF
OFF
ON
OFF
ON
OFF
ON
MEASUREMENT
10Vdc
6.5Vdc
0.2Vdc
1.8Vdc
0.2Vdc
0.5Vdc
5.0Vdc
<0.001Vdc
1.5Vdc
Troubleshooting CV Circuit
V-MON, the output of CV Monitor Amp A2U2, is 1/40 (1/4, 6011A, 6012B) the voltage between + S and - S. CV Error
Amp A2U3 compares V-MON to CV PROGRAM. Innerloop Amp A2U5A stabilizes the CV loop with input from A2U5B.
The measurements below verify that the operational amplifier circuits provide expected positive and negative dc voltage
excursion when the CV loop is open and the power mesh shut down.
Circuits Included. Constant Voltage (CV) Circuit and buffer amplifier A2U5B.
Setup. The Main Troubleshooting Setup, page 33. Apply the ac mains voltage to the isolation transformer, and disconnect
the external supply Remove the + S jumper and connect A2J7-2 ( + 15V) to + S. Set mode switch settings B4, B5 and B6
all to 0. Set VP to 0Vdc by connecting to P or set VP to + 5Vdc by connecting to A2J7-24 according to SETUP below.
VP and P are on rear-panel terminal block.
Outputs:
NODE ( + )
VM
A2U5-1
A2U3-6
A2U5-1
NODE ( - )
A2J7-4
A2J7-4
A2J7-4
A2J7-4
SETUP
VP = 0
VP = 0
VP = 5
A2U3-6
A2J7-4
VP = 5
A2U5-7
A2J7-4
short A2J7-24 to A2U5-5
MEASUREMENT
3.75Vdc
-14Vdc
-14Vdc
13Vdc
4.7Vdc (6011A, 6012B, 6015A)
≈ 0Vdc
5.1Vdc (6011A, 6012B, 6015A)
+ 7.5Vdc
If the failure symptoms include output voltage oscillation, check if the CV Error Amp circuit is at fault by shorting A2U3-6
to A2U3-2. If oscillations stop, the CV Error Amp circuit is probably at fault.
Troubleshooting CC Circuit
I-MON, the output of CC Monitor Amp A2U1, in volts is ≈ 1/3 (1/24, 6011A) the output current in amperes. CC Error
Amp A2U4C compares I-MON to CC PROGRAM. Differentiator circuit A2U4A differentiates the inboard voltage sense
to stabilize the CC loop. Its output is summed with I-MON at CC Error Amp A2U4C.
The measurements below verify that the operational amplifier circuits provide expected positive and negative do voltage
gain when the CC loop is open and the power mesh shut down.
44
Circuits Included. Constant Current (CC) Circuit on A2 control board.
Setup. The Main Troubleshooting Setup, page 33, except connect the external supply with polarity reversed to the unit's +
OUT ( - ) and - OUT ( + ) terminals. Apply the ac mains voltage to the isolation transformer. Set the external supply to
3.0Adc constant current with a voltage limit in the range 5 to 20Vdc. Set mode switches B1, B2 and B3 to 0. Set IP to 0Vdc
by connecting to P or set IP to + 5Vdc by connecting to A2J7-24 according to SETUP below.
Outputs:
NODE ( + )
IM
A2U4-8
A2U4-8
NODE ( - )
A2J7-4
A2J7-4
A2J7-4
SETUP
IP = 5 (6015A)
IP = 0
IP = 5
MEASUREMENT
0.125Vdc (0.88Vdc, 6015A)
-14Vdc
+14Vdc
If the failure symptoms include output current oscillation, check if the differentiator circuit is at fault by removing resistor
A2R35 ( 1M ohm) (3.3M ohm, 6011A). If oscillations stop, the differentiator is probably at fault.
Troubleshooting OVP Circuit
Flip-flop A2U8A-A2U8D is set by comparator A2U8C and reset by PCLR . TTL low at A2U18-12 inhibits the PWM.
OVP Program Voltage on A2J7-7 is equal to Eout/10.
Circuit included. OVP Circuit and 2.5V bias supply on A2 control board.
Setup. The Main Troubleshooting Setup, page 33, except connect the external supply to the unit's + OUT ( + ) and - OUT
( - ) terminals. Apply the ac mains voltage to the isolation transformer. Adjust the unit's OVP limit to 10Vdc. Set the
external supply (EXTERNAL) as instructed below.
Outputs:
NODE ( - ) = A2J7-4
NODE ( + )
A2U7-2
A2J7-7
SET VOLTAGE
EXTERNAL (Vdc)
-
A2J7-13
5
A2J7-13
15
A2J7-13
5
A2J7-13
5
* Front panel OVP control turned fully cw.
Note
SETUP
MEASUREMENT
cycle power
2.5Vdc
1.0Vdc
≈2.2Vdc (6015A)*
hi
lo
lo
hi
Connecting a test probe to either input of either comparator in the OV Flip flop (pins A2U8-1, 6, 7, 10, 11
or 13) may cause the flip flop to change states and cause the probed input to be low.
45
4
Principles of Operation
Autoranging Power
Autoranging allows the unit to be compact and light weight and yet to deliver a range of output voltage/current
combinations which would otherwise require the use of more than one supply or a higher rated power supply. Autoranging
is a name for circuitry which automatically makes full power available at all but low rated output voltages and currents. By
comparison, a conventional constant voltage/constant current (CV/CC) power supply can provide full output power only at
maximum rated output voltage and current.
Overview
The Simplified Schematic, Figure 4-1, shows how the major circuits are connected. Segmenting the Simplified schematic
into functional circuit blocks will highlight how these blocks work and illustrate overall system function.
Table 4-1 briefly describes the major circuits employed in the design of this unit. When used in conjunction with the
Simplified Schematic, the reader is provided with a quick overall appreciation of the unit's operation.
Power flows from the ac mains at the left of the schematic through circuit blocks connected by heavy lines to the output
terminals at the right. Follow the schematic from right to left to see how the output voltage is regulated during CV mode of
operation, The output voltage is monitored both at the output sense terminals + S and - S; OVS (Outerloop Voltage Sense)
and also before the two stages of output filter IVS (InnerLoop Voltage Sense).
Sensing with output sense terminals provides accurate load-voltage control and sensing before the output filter stabilizes the
supply and permits it to power reactive loads. The CV monitor amplifier buffers the OVS voltage to produce the V-MON
output monitoring voltage. A buffer amplifier monitors the voltage before the output filter to produce the IVS voltage.
When in CC operation, the output current is regulated in a similar manner. Output current is sensed as the OCS outerloop
voltage across a current monitoring resistor. OCS is buffered to produce l-MON. IVS is differentiated to produce an
innerloop current sensing voltage.
System Description
The Agilent 6010A /6011A/6012B/6015A are power supplies which utilizes the principle of switching to achieve
regulation. Basically, the power supply employs five major functional sub-systems together with the Front Panel to achieve
its overall objective of delivering a maximum of 17A or 200V (6010A); 120A or 20V (6011A); 50A or 60V (6012B); 5A
or 500V (6015B), at the power output of 1000W.
These sub-systems are
1. Regulation & Control
2. Protection
3. Input Power
4. DC Power Conversion
5. Output
47
Regulation & Control Subsystem
This sub-system may be considered to be the brains of the unit. It provides the control pulses to open and close the
switching elements which deliver power to the output. This section also regulates the output to ensure that the unit is
delivering a constant power at either a constant voltage or constant current setting. In the event that this cannot be achieved,
then the protection subsystem is employed to limit the power to the output.
To understand how this control is achieved, consider Figure 4-1, the simplified schematic. Power from the output is
sampled and attenuated before it is fed back to the Constant Voltage Error Amplifier. Another input to this amplifier is the
Program Voltage which the user sets via the front panel. The difference between these two voltages is amplified and
becomes the CV Error Signal. The output of the supply is also sampled by the CC Monitor Amp. This sample voltage is fed
into the Constant Current Error Amp. The other input to the Constant Current Error Amp is the program current which the
user sets via the front panel. The difference between these two voltages is amplified and becomes the Constant Current
Error Signal. These two signals are connected in a wired-OR configuration and fed into the Constant Voltage Comparator.
The control mechanism which the unit employs to regulate its output comprises the Primary Current Monitor Transformer,
the Control Voltage Comparator and the Pulse Width Modulator. The Primary Current Monitor Transformer senses the
power transferred by the FETs and generates the Ip Ramp Voltage which continues to build up as the output increases. This
Ramp Voltage and the Control Voltage are used as inputs to the control voltage Comparator. If the Ramp Voltage exceeds
the Control Voltage, the output of the comparator goes low and resets the Pulse Width Modulator in the process. If the unit
develops power in excess of its requirements, the power LIMIT Comparator effectively monitors this condition and returns
a low signal which disables the Pulse Width Modulator and prevents any further power development.
The PULSE WIDTH Modulator (PWM) is the device which the unit employs to constantly alter the duty cycle of the
switching waveform produced by the FETs. Once reset, it triggers the off-pulse one-shot which turns off the FETs via the
off-pulse driver. The 20KHz entering the PWM holds it reset for 1.5µS and on the next clock pulse from the oscillator the
output is clocked high. This in turn triggers the on-pulse one-shot which enables the FETs. Other inputs which can disable
the PWM are the outputs from the Power Limit Comparator, the Master Enable, the CV and CC loop.
Figure 4-2 shows the timing diagram of the signals which control the FETs. Notice that on the rising edge of the on-pulse,
the PWM is activated and remains on until the off pulse is sent. There is a slight delay in the time the off-pulse is sent and
the time the FETs are actually turned off. This turn off delay results in greater power being generated than is required as
shown by the Ramp Voltage exceeding the Control Voltage. To prevent this situation, there is an Initial Ramp Circuit
which increases the Ramp Voltage and enables the voltage to ramp up to the Control Voltage level earlier.
The sampled output voltage is fed back through the Constant Voltage Circuit and the Constant Current Circuit before it
becomes the Control Voltage. The CV and CC circuits provide the means for the instrument to deliver power at either
constant voltage or constant current.
The CONSTANT VOLTAGE circuit takes its input from two positions on the output voltage rail: the Innerloop Voltage
Sense (IVS), and the outerloop Voltage Sense (OVS) at the + S and - S terminals. The CV Monitor Amplifier attenuates the
OVS in the ratio of 1:40 (6010A); 1:4 (6011A); 1:12 (6012B); 1:100 (6015A), and produces the Voltage Monitor(V-MON)
signal. This signal connects through protective circuitry to the rear panel and display circuits on the front panel, and also
forms the input to the CV Error Amplifier. The Program Voltage which the user sets at the front panel voltage control is
also an input to this amplifier. The output is the error signal which together with the output from the Innerloop Voltage
Sense (IVS) generates the CV Control Voltage.
In addition to the Front Panel settings, the CV Program Voltage can be set from an external voltage applied between rear
panel terminals VP and P, or from an external resistor between these same terminals.
48
Figure 4-1. 6010A and 6015A Simplified Schematic
49
Figure 4-1. 6011A and 6012B Simplified Schematic
50
Table 4-1. Quick Reference Guide to Major Circuits
Dependent Circuits
Input from
Output to
Mains
Control Circuits
Circuit
Bias Power
Supply (BPS)
Major Function
Provides Bias and
Reference Voltage.
Bias Voltage
Detector (BVD)
Delays the unit's
operation at poweron.
Enables power
circuits.
BVS
Delay Circuit,
OVP
BVD: DOD
PWM; Relay
Power Limit
Comparator (PLC)
Determines
maximum primary
current.
BVS; Ramp
PWM
Control Voltage
Comparator
(CVC)
Constant Voltage
Circuit (CV)
Regulates the
operation of the
PWM.
Produces CV
Control Voltage.
V IP RAMP Control
Port Voltage (VCP)
PWM
CVC,
Display
Circuits
Constant Current
Circuit (CC)
Produces CC
Control Voltage.
Outer Voltage
Sense (OVS)
Innerloop Voltage
Sense (IVS) CV
Program Voltage
Outer Current
Sense (OCS). CC
Program Voltage
Pulse Width
Modulator (PWM)
Switches FETs.
Master Enable;
PLC, CVC
FETs
Primary Current
Monitor
Transformer
Generates IP Ramp
Voltage.
FETs
CVC; PLC
Power
Transformer
Stores and transfers
output power.
FETs
Output Rectifier
A4 Q1,2,3,4
Control gating of
current in power,
and Sense
Transformers.
Rapidly lowers
output voltage.
PWM
Sensing
Transformer
CV Circuit, OVP,
DOD
Output Rail
Timed Delay
Circuit (TDC)
Down
Programmer (DP)
CVC; Display
Circuits
Operation
Mains voltage at BVS input is
converted to lower voltage levels to
provide the internal operating voltages
for the various circuits.
Holds all circuits reset until all internal
voltages are at acceptable levels.
Waits for 3 seconds after power-on and
then shuts out inrush current limiting
resistor. The circuit is triggered by the
BVD when the + VDC is stable.
Compares VIP RAMP with VREF and
produces a signal to inhibit the PWM
when V IP RAMP > V REF.
Compares VIP RAMP with VCP and
produces a signal to inhibit the PWM
when VIP RAMP > VCP.
Monitors OVS signals from which
VMON is derived. Combines OVS and
IVS to give CV Control Voltage.
Monitors OCS signals from which
l-MON is derived. Combines OCS and;
differentiated IVS to give the CC
control voltage.
Switching action achieved at 20KHz
rate with on-pulse activated by 20KHz
clock and off-pulse by CVC, PLC,
20KHz clock or shutdown circuits.
Senses Ip current build-up while FETs
are on.
When FETs are on, the primary
windings of the transformer store
energy until the FETs are switched off
when the energy is transferred to the
secondary for output circuits.
FETs open and close in response to
pulses from the PWM. The length of its
on/off time depends on the duration of
the PWM on or off pulse.
Output filter capacitor are rapidly
discharged at varying ampere rates
depending on output voltage. Circuit
activated under condition of ac power
loss, shut down or low voltage.
51
Table 4-1. Quick Reference Guide to Major Circuits (continued)
Circuit
Drop out Detector
(DOD)
Over Voltage
Protection (OVP)
Circuit
A9 Output board
(6015A)
Major Function
Shuts down output
power when line
drops out for more
than one cycle.
Limits maximum
output voltage.
Protects output
capacitors and
power mesh from
reverse voltage.
Dependent Circuits
Input from
Output to
Bias Transformer
PWM; DP
+ Out Sense
DP; PWM
Power Mesh
Output
terminals
Operation
If no ac pulse is detected after 20ms,
the circuit inhibits the PWM and
triggers the Down Programmer.
Senses Output Voltage and compares
with a preset limit set by its reference
circuit. It triggers the Down
Programmer in extreme situations.
Diodes provide protection against
reverse voltage applied across the
output terminals.
.
Figure 4-2. FET Control Signals Timing Diagram
The CONSTANT CURRENT CIRCUIT also produces a control voltage. The outerloop current sense (OCS) is taken across
the current monitoring resistor and the combined signal is amplified by the CC Monitor amplifier to give the outerloop
Current-Sense Voltage, I-MON. This signal is then diverted along two paths: one terminating at the barrier strip while
along the other path the signal combines with the differentiated output of the Innerloop Voltage Sense (IVS). The CC error
amplifier compares this combined output with the user-set CC Program Voltage to produce the CC Control Voltage.
The Control Voltage used to regulate the unit may be derived from either the CV or CC circuit. These circuits are connected via a wired-OR connection to the CV or CC circuit. If the CV Control Voltage exceeds the CC Control Voltage then
52
diode A2CR24 is reversed biased but diode A2CR11 is forward biased and the CC Circuit provides the controlling signal.
Similarly when CC Control Voltage exceeds CV Control Voltage, the CV circuit provides the regulating control voltage.
When the unit is operating in CV mode, the CV Control Voltage varies between - 0.5Vdc and + 0.5Vdc. It is most negative
when the load is drawing no power but as power output increases the voltage becomes more positive.
Protection Subsystem
The diverse system configurations and operating environments under which the unit will be required to operate, will
certainly require it to be adequately protected if it must function reliably. The protection circuits of the unit offer protection
at turn-on and also during operation.
The CURRENT LIMIT RESISTORS is the first protection along the power rail which the unit utilizes. This circuit
prevents any surges of AC input to the input filter by limiting the inrush current. After a predetermined elapsed time the
resistor is bypassed and the unit is ready to deliver power. The circuit which carries out this function is the TIMED DELAY
CIRCUIT. When both the Dropout Detector and the PCLR are high, this delay circuit is enabled and counting at the clock
frequency of 1.25KHz begins. After 3 seconds, DROPOUT goes high and enables the PWM.
Turn-on protection is also offered by the BIAS VOLTAGE DETECTOR (BVD) which prevents spurious operation that
may occur at power-on of the unit if circuits attempt to operate before the + 5Vdc bias voltage is at the clock, PWM, and
logic circuits. After power-on, as the output of the + 5Vdc bias power supply rises the BVD is turned on inhibiting the
Relay Driver and the On-Pulse Driver and creating the power clear signal PCLR . The latter signal is held low until the
unregulated input to the + 5Vdc bias supply is greater than an input voltage sufficient to assure a + 5Vdc output
Certain circuits also give the unit on-going protection during its operation The AC SURGE AND DROPOUT DETECTOR
is such a circuit. This circuit protects the unit from damage from AC mains voltage surges. It shuts down the unit when
there is either a 40% overvoltage or a 20 ms voltage interruption in the ac mains voltage. The mains detect signal senses the
ac mains voltage and pulls the DROPOUT signal low thereby inhibiting the PWM and shutting off the power.
During conditions of overvoltage when a monitored fraction of the output voltage exceeds the limit set by the front panel
OVP Adjust, the OVER VOLTAGE PROTECTION circuit inhibits the PWM and triggers the Down Programmer. This
condition persists until the unit is turned off. At power-on, the Bias Voltage Detector resets the OVP.
The DOWN PROGRAMMER is another protection circuit which is activated when any of the following adverse operating
conditions occurs: over voltage; over temperature; primary power failure; and programming of a lower output voltage.
Under these conditions, the Down Programmer lowers the output voltage by rapidly discharging the output filter capacitors.
The Down Programmer takes its input from the Master Enable and the CV Error Amplifier. When either of these signals is
low, it is activated. The + 8.9Vdc bias supply provide enough energy to the Down Programmer to discharge the output
circuit even when primary power is lost.
The TEMPERATURE PROTECTION circuit protects the FETs from excessive temperature gradients. A thermostat
mounted on the FET heat sink monitors the temperature build up of the FETs and disables the PWM when the temperature
exceeds a predetermined limit.
In addition to an over-temperature protection, there is also an OVERVOLTAGE PROTECTION circuit. When the FETs
turn off, the leakage inductance of the power transformer forces current to continue to flow in the primary. Clamp diodes
are employed to protect the FETs from excessive reverse voltage by bypassing the FETs and conducting the current to the
input filter.
Input Power Subsystem
This subsystem forms the interface between the ac mains supply and the switching elements of the unit. It takes ac power
53
from the mains, converts it to dc and delivers this unregulated dc to the switching elements and internal control circuitry.
Input power takes two distinct pathways to carry out the above function: mains -rectifier/filter--switching elements and
mains--bias supply--control circuits.
If the first pathway is taken, it is seen that primary power from the ac mains enters the INPUT RECTIFIER via the inrush
current limiting resistor. The rectifier converts the ac voltage to dc voltage and passes its output to the input filter. The unit
has a feature which allows it to operate either at 110/120 or 220/240Vac mains voltage. The voltage doubling capability as
it is called is effected by connecting jumper AlW1 between the rectifier and filter. When the mains voltage is 220/240Vac,
the jumper is open permitting the filter to develop a typical bus voltage of about 300Vdc. However, when the mains voltage
is 110/1120Vac, the jumper terminals are connected and the rectifier/filter combination now behaves as a voltage doubler
enabling a bus voltage of 300Vdc to be developed .
For the second pathway, primary power passes the Mains Voltage Select Switches to the BIAS POWER SUPPLIES which
provide the operating voltages for the internal circuits. The Mains Voltage Select Switches connect the primary windings of
the Bias-Supplies' transformer for operation at 120, 220, or 240Vdc.
The unit checks that the + 5Vdc bias voltage and the ac mains voltage are within acceptable limits as part of its turn-on
sequence.
DC Power Conversion Subsystem
The current available at the input rails after rectification enters the power transformer A1T2 and Primary Current Monitor
Transformer A1T1. This current flow is controlled by the FETs which act as high frequency switches. The FETs driver
circuits are under the control of the Pulse Width Modulator where the On/Off pulses originate.
During the on-pulse the FETs are turned on and current enters the primaries of transformers A1T1 and A1T2 as described
above. The output rectifiers A5CR4 and A5CR5 (6011A and 6015A) being reversed biased block the flow of current from
the secondary of A1T2 to the output. There is therefore a current build up and the secondary windings of A1T2 act as a
storage device. Meanwhile the current in the secondary of current transformer A1T1 develops a linearly increasing voltage
waveform across resistors A2R116 and A2R117. This waveform is the Ip Ramp Voltage and corresponds to the energy
build up in the secondary of the power transformer.
When the FETs are turned off, the collapsing magnetic field reverses the polarity across the power transformer causing the
output rectifiers to be forward biased. Current therefore flows from the secondary windings to the output filters.
Output Subsystem
As discussed above, power reaches the output rail when the FETs are turned off and the output diodes are forward biased.
The signal is first passed through the first stage of the output filter network where most of its 20KHz ripple derived from
the switching FETs are attenuated. Part of the signal leaving the first stage filter is fed back to the CV and CC Circuits as
the Innerloop Voltage Sense and becomes part of the inner control loop. The primary purpose of these feed-back loops is to
impart sufficient stability to the power supply and enable it to cope with a variety of loads.
The signal from the first stage filter also becomes the input to the second stage capacitor filter which provides the additional
filtering necessary for the unit to meet its specifications. This filter is close to + S and - S output terminals thereby ensuring
that the filter is as close to the user's load as possible. The output from the + S and - S terminals is also fed back to the CV
and CC Circuits and forms part of the outer feedback loop.
The 6015A units contain an A9 output board that provides protection against excessive reverse voltage applied across the
output terminals.
54
The Front Panel Board
Figure 4-3 is a simplified schematic of the front panel board. The V-MON, I-MON, and OVP signals are passed to the front
panel board from the A2 Control Board. The V-MON and I-MON signals are then. amplified by buffer amplifiers before
they are directed to their respective digital voltmeters for display. As an intermediate step before display, the V-MON
signal passes through a pair of bilateral range switches A3U4A and U4D which determine the resolution of the voltage
display. When the voltage to be displayed is below a certain value, the unit selects the low-range bilateral switch A3U4
which enables the voltage to be displayed to an accuracy of two decimal places; however above this critical output voltage
value, the high-range switch A3U4D assumes control and the voltage displayed is accurate to one decimal place.
In addition to providing the display voltage, the V-MON and I-MON signals are used to generate the CV and CC control
voltages respectively. When the CV control voltage is found to be more negative than the Control Port Voltage, the power
supply is operating in the CV Mode and the CV LED lights. Similarly the CC LED lights when the CC Control Voltage is
below the Control Port Voltage confirming that the power supply is operating in CC Mode. When both CV and CC Control
Voltages exceed the Control Port Voltage, the power supply becomes unregulated and the unregulated LED lights.
The CV of CC Program voltages are obtained by depressing the "DISPLAY SETTINGS" switch and reading the respective
display. By depressing this switch and turning the Voltage or Current control, the technician can set the program voltage or
current. If the instrument is operating in CV Mode for example, then the display voltage and the CV Program Voltage are
identical but the display current may vary with the CC Program Voltage. This condition is reversed when the unit is under
CC Mode.
The OVP set potentiometer is also located on the front panel. By depressing the “OVP DISPLAY” switch and adjusting the
pot with a small flat screw-driver, the OVP limit can be set. When the output voltage exceeds this pre-set limit, the unit is
disabled and the OVP LED lights.
55
Figure 4-3. Simplified Front Panel Schematic
56
5
Replaceable Parts
Introduction
This chapter contains information for ordering replacement parts. Table 5-3 lists parts in alpha-numeric order by reference
designators and provides the following information:
a.
b.
c.
d.
Reference Designators. Refer to Table 5-1.
Agilent model in which the particular part is used.
Agilent Part Number.
Description. Refer to Table 5-2 for abbreviations.
Parts not identified by reference designator are listed at the end of Table 5-3 under Mechanical and/or Miscellaneous.
Table 5-1. Reference Designators
A
B
C
CR
DS
F
FL
G
J
K
L
Q
R
RT
S
T
TB
TS
U
VR
W
X
Y
Assembly
Blower
Capacitor
Diode
Signaling Device (light)
Fuse
Filter
Pulse Generator
Jack
Relay
Inductor
Transistor
Resistor
Thermistor Disc
Switch
Transformer
Terminal Block
Thermal Switch
Integrated Circuit
Voltage Regulator (Zener diode)
Wire (Jumper)
Socket*
Oscillator
* Reference designator following "X" (e.g. XA2) indicates assembly or device mounted in socket.
57
Ordering Information
To order a replacement part, address order or inquiry to your local Agilent Technolgies sales office. Specify the following
information for each part: Model, complete serial number, and any option or special modification (J) numbers of the
instrument; Agilent part number; circuit reference designator; and description. To order a part not listed in Table 5-3, give a
complete description of the part, its function, and its location.
Table 5-2. Description Abbreviations
ADDR
ASSY
AWG
BUFF
CER
COMP
CONV
DECODER/DEMULTI
ELECT
EPROM
FET
FF
FXD
IC
INP
LED
MET
MOS
OP AMP
OPTO
OVP
PCB
PORC
POS
PRIOR
ROM
RAM
RECT
REGIS
RES
TBAX
TRIG
UNI
VAR
VLTG REG
WW
58
Addressable
Assembly
American Wire Gauge
Buffer
Ceramic
Carbon Film Composition
Converter
Decoder/Demultiplexer
Electrolytic
Erasable Programmable Read-Only Memory
Field Effect Transistor
Flip-Flop
Fixed
Integrated Circuit
Input
Light Emitting Diode
Metalized
Metal-Oxide Silicon
Operational Amplifier
Optical
Over Voltage Protection
Printed Circuit Board
Porcelain
Positive
Priority
Read-Only Memory
Random Access Memory
Rectifier
Register
Resistor
Tube Axial
Triggered
Universal
Variable
Voltage Regulator
Wire Wound
Table 5-3. Replaceable Parts List
Ref. Desig.
A1
A1
A1
B1
C1,2, 4-*6,8
C9
C10
C11,12
C11,12
C11,12
C13,14
C13,14
C13,14
C15,16
C15,16
C13-16
C17,18
C17,18
C17,18
*C19
*C19,20
*C19
*C19
*C20-23
*C20,22
*C22
*C23
C24
*C24
*C25
*C25
*C25
*C25,26
C26
*C26
C27
C28
C28
C28
C29
C29
C30
C30,31
C30
C32
C33
Agilent Model
6010A, 6011A
6012B
6015A
All
All
All
All
6010A
6011A
6012B, 6015A
6010A
6012B
6015A
6010A, 6012B
6015A
6011A
6010A, 6012B
6011A
6015A
6010A
6011A
6012B
6015A
6010A, 6015A
6012B
6011A
6011A
6010A, 6015A
6012B
6010A
6012B
6015A
6011A
6010A, 6015A
6012B
6011A, 6012B, 6015A
6010A, 6012B
6011A
6015A
6010A, 6012B, 6015A
6011A
6010A
6011A
6012B, 6015A
6011A
6011A
Agilent Part Number
06030-61032
06032-61032
06030-61033
See Chassis Electrical
0180-4528
0160-5932
0180-3699
0160-6392
0160-5895
0160-5933
0180-3702
0180-3492
0180-4204
0180-3693
0180-3587
0180-3425
0180-0291
0180-3693
0180-4129
0160-0260
0160-0291
0160-5286
0160-0904
0160-6392
0160-7732
0160-5377
0160-7732
NOT USED
0160-4281
0160-0269
0160-5286
0160-0904
0160-5377
NOT USED
0160-4281
0160-6805
See Chassis Electrical
0160-7732
NOT USED
0160-4323
0160-4281
See Chassis Electrical
NOT USED
0160-4962
0160-4323
0160-4962
Description
MAIN BOARD ASSEMBLY
MAIN BOARD ASSEMBLY
MAIN BOARD ASSEMBLY
fxd elect 1800µF 200V
fxd poly 0.47µF 250V
fxd elect 470µF 20% 35V
fxd poly .047µF 20V
fxd poly .047µF
fxd elect .022µF 10%
fxd elect 1600µF 125V-10% +50%
fxd elect 2600µF 75V
fxd elect 900µF 350V
fxd elect 1000µF 20%
fxd elect 1000µF 20%
fxd elect 5500µF 40V
fxd elect 1µF 35V
fxd elect 1000µF 50V
fxd elect 1µF 35V
fxd cer .047µF 20%
fxd cer 1µF 35V
fxd cer .47µF 20%
fxd ww 0.05µF 1KV
fxd poly .047µF 20%
fxd poly .47µF
fxd poly, 2.2µF 10% 63V
fxd poly, .47µF
fxd met 2200pf 20%
fxd cer .047µF 20%
fxd cer .47µF 20%
fxd ww 0.05µF 1KV
fxd cer 2.2µF 10% 63V
fxd met 2200pf 20%
fxd met 0.01µF 400V
fxd poly, .47µF
fxd met .047µF 20% 250VAC
fxd met 2200PF 20%
fxd poly 1.0µF 20%
fxd met .047µF 20% 250V
fxd poly 1.0µF 20%
* Part of output filter (6010A, 5060-3520; 6011A, 5060-3525; 6012B, 5060-3523; 6015A, 5060-3521) which is mounted
on the output bus bars.
59
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
C34
CB1
CR1
CR2
CR3,4
CR5
CR6-13
DS1
F1
F2
K1,2
L1
Agilent Model
All
6010A 6012B, 6015A
All
All
All
All
All
All
All
All
All
All
L2
6010A, 6012B, 6015A
L3
L3
6010A
6012B
L2,3
L3
L4
L4
6011A
6015A
6010A, 6012B, 6015A
6011A
Q1
Q1
Q2
R1-4
R5
R7
R8
R9
R10
R11
R11
R11,12
R12,13
R12,13
R13
R14,15
R14,15
R14,15
R16,17
R18
R19
R20-23
R20,23
R24
R25-R28
R25
6010A
6015A
All
All
All
All
All
All
All
6010A, 6015A
6012B
6011A
6010A, 6012B
6015A
6011A
6010A, 6015A
6011A
6012B
All
All
All
6010A, 6012B, 6015A
6011A
All
6010A, 6015A
6011A, 6012B
Agilent Part Number
0160-6805
See Chassis Electrical
1901-0731
1901-0731
1901-0050
1901-0731
1901-0731
1990-0517
2110-0001
2110-0671
0490-1834
06012-80003
9170-0707
9170-1267
5080-2040
9140-1064
06012-80095
9170-0721
06011-80092
5080-2131
See Chassis Electrical
9170-1267
5080-2040
1855-0456
1855-0777
1855-0665
0811-1866
0757-0418
0698-5525
0757-0765
0811-3700
0811-3699
5080-2079
06032-80001
NOT USED
0699-0188
0698-3492
06011-80001
NOT USED
7175-0057
0812-0100
0683-1065
0757-0921
0757-0403
NOT USED
0699-0208
0686-2015
NOT USED
0811-1869
Description
fxd met 0.01µF 400V
power rect. 400V
power rect. 400V 1A
diode-switching 80V 200ma
Power rect. 400V
Power rect. 400V
LED visible
fuse 1A 250V
fuse .125A 125V
Relay
Snubber wire
ferrite core, (ref. L1)
Magnetic core
jumper for L2
Output Choke
Output Choke
ferrite core, (ref. L1)
Output Choke
Ind fxd 18µH 5A
Magnetic core
jumper for L2
MOSFET N-Chan
Trans FET N-Ch 600V 3.2A
FET N-Chan
fxd ww 10K 1% 5W
fxd comp 619 1% 1/8W
fxd comp 6.8 5% 1/2W
fxd comp 36.5K 1% 1/8W
fxd ww 20 10% 20W
fxd ww 6 10% 20W
current sensing resistor
current sensing resistor
fxd film 2.2 5% 1/4W
fxd film 26.1 5% 1/4W
Current Sensing Resistor
solid tinned copper wire
fxd ww 2K 5% 5W
fxd comp 10M 5% 1/2W
fxd film 750 1% 1/8W
fxd film 121 l% 1/8W
fxd film 1 5% 1/4W
fxd comp 200 5% 1/2W
fxd ww 30 ohms 3W
* Part of output filter (6010A, 5060-3520; 6011A, 5060-3525; 6012B, 5060-3523; 6015A, 5060-3521) which is mounted
on the output bus bars.
60
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
R29,30
R29,30
R31
R32
R31,32
R33
R33
R34
R35
R36,37
R36,37
R38,39
R40
R41
R43,44
R45
R46
R47,48
R49
S1
S2
S3
T1
T2
T2
T2
T3
U1
Agilent Model
6010A
6015A
6010A
6010A
6015A
6010A
6015A
6010A, 6015A
6010A, 6015A
6010A
6015A
6010A, 6015A
6010A, 6015A
All
All
All
All
All
All
All
All
6010A, 6012B, 6015A
All
6010A
6012B
6015A
All
All
U3
U3
6010A, 6012B, 6015A
6011A
U4
U5
U6
VR1
6015A
6010A, 6015A
All
All
Agilent Part Number
0811-1887
0811-3557
0757-0367
0686-7535
0698-8959
0757-0451
0757-0471
0757-0438
0698-8827
0811-1909
0811-1913
0757-0467
NOT USED
0764-0041
0698-0085
0698-8827
0757-0419
0698-3622
0757-0401
3101-2046
3101-1914
See Chassis Electrical
9100-4350
06030-80090
06032-80090
9100-4827
9100-4864
1906-0218 or
1906-0389
1826-0393
1906-0006
1826-0643
1990-1074
1902-0955
Description
fxd ww .05 5% 10W
fxd ww 0.5ohms 5% 10W
fxd film 100K 1% 1/2W
fxd comp 75K 5% 1/2W
fxd film 619K 1%
fxd film 24.3K 1% 1/8W
fxd film 182K 1%
fxd film 5.11K 1% 1/8W
fxd film 1M 1% 1/8W
fxd ww 500 5% l0W
fxd ww 1.5K l0W
fxd film 121K 1% 1/8W
fxd ww 30 5% 2W
fxd film 2.61K 1% 1/8W
fxd film 1M 1% 1/8W
fxd film 681 1% 1/8W
fxd film 120 5% 2W
fxd film 100 1% 1/8W
switch, DPDT slide
switch, 2-DPDT slide
current transformer
power transformer
power transformer
power transformer
bias transformer
diode bridge
IC, volt-reg 1.2/37V
U3 is included with heatsink assembly 50602942, see A1 Mechanical
diode bridge 400V
IC, switched-mode ckt
opto-isolator
diode zener 7.5V 5%
A1 MECHANICAL
J1
J2
J3,4
J5
J6
6010A, 6012B, 6015A
6011A
All
All
All
All
All
6015A
All
All
All
All
All
1205-0282
5060-2942
1205-0562
21l0-0269
0403-0086
06032-60010
0340-1095
2190-0586
NOT USED
1251-5384
NOT USED
5060-2877
5060-2878
heatsink (ref. U3)
heatsink assembly (includes U3)
heatsink (ref. U1)
fuse clip (ref. F1)
bumper foot (ref. R9,10)
output bus bar
insulator for buss bar
lockwasher (ref. U1)
Post-Type Connector,3pin
ribbon cable(2inch)(ref.W8)
ribbon cable(4inch)(ref.W7)
61
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
J7,8
J9,10,
L,N,P
J11-14
XA4,5
All
All
A2
A2
A2
A2
C1-4
C5
C6-7
C8
C9
C10
C11
C12
C13-16
C17
C17
C18
C19
C19
C20
C20
C21,22
C23
C24
C24
C25
C25
C26
C27
C27
C28
C28
C29
C30
C31
C32
C32
C33
C33
C33
C33
C34
C34
C35
C36
6010A
6011A
6012B
6015A
All
All
All
All
All
All
All
All
All
6010A, 6012B, 6015A
6011A
All
6010A, 6011A, 6012B
6015A
6010A, 6012B, 6015A
6011A
All
All
6010A, 6012B, 6015A
6011A
6010A, 6012B, 6015A
6011A
All
6010A, 6012B, 6015A
6011A
6010A, 6012B, 6015A
6011A
All
All
All
6010A, 6012B, 6015A
6011A
6010A
6011A
6012B
6015A
6010A, 6012B, 6015A
6011A
All
All
62
Agilent Model
All
All
Agilent Part Number
1251-0600
1251-5613
1251-0600
1252-1052
06030-60022
06011-60022
06032-60022
06030-60028
0160-5422
0160-4801
0160-5422
0160-5892
0160-5422
0160-4807
0160-5892
0160-4830
0160-5422
0160-4833
0160-4832
0160-5892
0160-5469
0160-5534
0160-5892
0160-5534
0160-5422
NOT USED
0160-0162
0160-0161
0160-4812
NOT USED
0160-4807
0160-5892
0160-5534
0160-4834
0160-4833
0160-5422
0160-4807
0160-5422
0160-5644
0160-4832
0160-4822
NOT USED
0160-4831
0160-4824
NOT USED
0160-4832
0160-5422
0160-4812
Description
connector, single contact
connector, single contact
connector, single contact
connector 64pin
Control Board Assembly
Control Board Assembly
Control Board Assembly
Control Board Assembly
fxd cer .047µF 20% 50V
fxd cer 100pf 5% 100V
fxd cer .047µF 205 50V
fxd poly .22µF 10%
fxd cer .047 20% 50V
fxd cer 33pf 5% 100V
fxd poly .22µF 10%
fxd cer 2200pf 10% 100V
fxd cer .047µF 20% 50V
fxd cer .022µF 10% 100V
fxd cer .01µF 10% 100V
fxd poly .22µF l0%
fxd met 1µF 10% 50V
fxd met .1µF 10% 63V
fxd poly 22µF 10%
fxd poly 0.1µF 10% 63V
fxd cer .047µF 20% 50V
fxd poly .022µF 10% 200V
fxd poly .01µF 10% 200V
fxd cer 220pf 5% 100V
fxd cer 33pf 5% 100V
fxd poly .22µF 10%
fxd poly 0.1µF 10% 63V
fxd cer .047µF 10% 100V
fxd cer .022µF 10% 100V
fxd cer .047µF 20S 50V
fxd cer 33pf 5% l00V
fxd cer .047µF 20% 50V
fxd cer .033µF 10% 50V
fxd cer .01µF 10% 100V
fxd cer 1000pf 5% 100V
fxd cer 4700pf 10% 100V
fxd cer 680pf
fxd cer .01µF 10% 100V
fxd cer .047uf 20% 50V
fxd cer 220pf 5% 100V
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
C37
C37
C38-40
C41
C42
C43
C44
C45
C46
C46
C47
C48,49
C50
C50
C51
C52
C53
C54
C54
C55
C56,57
C58
C59
C60
C61
C62
C63
C64
C64
C65
C66
C67
C68
C69,70
C71
C72
C73
C74,75
C76
C77
C78
C79
C80
C81
C82
C83
C84
C85
Agilent Model
6010A, 6011A, 6015A
6012B
All
All
All
All
All
All
6010A, 6011A, 6012B
6015A
All
All
6010A, 6011A, 6012B
6015A
All
All
All
6010A, 6011A, 6012B
6015A
All
All
All
All
All
All
All
All
6010A, 6011A, 6012B
6015A
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
Agilent Part Number
NOT USED
0160-4830
0160-5422
0160-4831
0160-4812
0160-4831
0160-5422
0160-4812
0160-5166
0160-4832
0160-5422
0160-4835
0180-0291
0180-4129
0180-1731
0180-0230
0180-1731
0180-0291
0180-4129
0180-0230
0160-5422
0160-4801
0160-4835
0160-5422
0160-4812
0160-4835
0180-1980
0180-0116
0180-4132
0160-5422
0160-4801
0160-5422
0160-4822
0160-5422
0180-0376
0180-2624
0180-3407
0160-5098
0160-4835
0160-4833
0160-4832
0160-4830
0160-4813
0160-5422
0160-4812
0160-5422
0160-4812
0160-4832
Description
fxd cer 2200pf 10% 100V
fxd cer .047µF 20% 50V
fxd cer 4700pf 10% l00V
fxd cer 220pf 5% 100V
fxd cer 4700pf 10% 100V
fxd cer .047µF 20% 50V
fxd cer 220pf 5% 100V
fxd cer .015µF 20% 100V
fxd cer .01µF 20% 100V
fxd cer .047µF 20% 50V
fxd cer .1µF 10% 50V
fxd elect 1µF 10% 35V
fxd elect 1µF 10% 35V
fxd cer 4.7µF l00V
fxd elect 1µF 20% 50V
fxd cer 4.7µF 100V
fxd elect 1µF 10% 35V
fxd elect 1µF 10% 35V
fxd elect 1µF 20% 50V
fxd cer .047µF 20% 50V
fxd cer l00pf 5% l00V
fxd cer .1µF 10% 50V
fxd cer .047µF 20% 50V
fxd cer 220pf 5% l00V
fxd cer .1µF 10% 50V
fxd elect 1µF 5% 35V
fxd elect 6.8µF l0% 35V
fxd elect 6.8µF l0% 35V
fxd cer .047µF 20% 50V
fxd cer 100pf 5% l00V
fxd cer .047µF 20% 50V
fxd cer 1000pf 5% 100V
fxd cer .047µF 20% 50V
fxd elect .47µF 10% 35V
fxd elect 2000µF 10V
fxd elect 2200µF 35V
fxd cer .22µF 10% 50V
fxd cer .1µF 10% 50V
fxd cer .022µF 10S 100V
fxd cer .01µF 10% 100V
fxd cer 2200pf 10% 100V
fxd cer 180pf 52 l00V
fxd cer .047µF 203 50V
fxd cer 220pf 5% l00V
fxd cer .047µF 20% 50V
fxd cer 220pf 5% l00V
fxd cer .01µF l0% l00V
63
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
CR1-6
CR7,8
CR9,10
CR11
CR12
CR13,14
CR15,16
CR17,18
CR19
CR20-31
CR32
L1
Q1-3
Q4-6
Q7
Q8
Q9
Q9
Agilent Model
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
6010A, 6012B
6011A
Q9
Q10
Q11
R1,2
R3
R4
R5
R6
R6
R6
R6
R7
R8
R9
R9
R10
R11,12
R13
R11-13
R13
R14,15
R16
R17
R18
R18
R19
R20
R20
R21
R21
R21
R21
6015A
All
All
All
All
All
All
6010A
6011A
6012B
6015A
All
All
6010A, 6011A, 6012B
6015A
All
6010A, 6012B, 6015A
6010A, 6015A
6011A
6012B
All
All
All
6010A, 6011A, 6015A
6012B
All
6010A, 6015A
6011A, 6012B
6010A, 6015A
6011A
6012B
6015A
64
Agilent Part Number
1901-0033
1901-0050
1901-0033
1901-0050
1901-0033
1901-0050
1901-0033
1901-0050
1901-0033
1901-0050
1901-0992
06023-80090
1854-0823
1855-0413
1854-0823
1853-0012
1854-0635
5060-2944
1853-0036
1858-0023
0686-5125
0683-5125
0757-0483
0683-2015
0698-6615
0699-1011
0698-7631
0757-0424
0683-5125
2100-3353
2100-3352
2100-3351
0698-3433
0757-0465
0698-3430
NOT USED
0757-0379
0686-5125
0683-2015
0698-7082
0683-1025
0683-1024
0757-0442
0686-5135
0686-1025
2100-3274
2100-3350
2100-3273
2100-3274
Description
gen prp 180V 200ma
switching 80V 200ma
gen prp 180V 200ma
switching 80V 200ma
gen prp 180V 200ma
switching a0V 200ma
gen prp 180V 200ma
switching 80V 200ma
gen prp 180V 200ma
switching 80V 200ma
schottky 40V 3A
choke
NPN Si
J-FET P-chan Si
NPN Si
PNP Si
NPN Si
NPN Si (included with heatsink 5060-2944,
see A2 Mechanical)
NPN S/HS Assy
PNP Si
transistor array
fxd comp 5.1K 5% 1/2W
fxd film 5.1K 5% 1/4W
fxd film 562K 1% 1/8W
fxd film 200 5% 1/4W
fxd film 3.75K .1%
fxd film 3.32K .1% 1/8W
fxd film 2.87K .1%
fxd film 1.1K
fxd film 5.1K 5% 1/4W
trimmer 20K 10%
trimmer 1K 10%
trimmer 500 ohms
fxd film 28.7 1% 1/8W
fxd film 100K 1% 1/8W
fxd film 21.5 1% 1/8W
fxd film 12.1 1% 1/8W
fxd comp 5.1K 1/2W
fxd film 200 5% 1/4W
fxd film 100K 1% 1/8W
fxd film 1K 5% 1/4W
fxd film 1K 5% 1/4W
fxd film 10K 1% 1/8W
fxd comp 51K 5% 1/2W
fxd comp 1K 5% 1/2W
trimmer 10K 10%
trimmer 200 10%
trimmer 2K 10%
trimmer 10K 10%
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R31
R32
R33
R34
R34
R35
R35
R35
R36
R37,38
R37
R38
R39
R40
R40
*R40
R41
R41
R41
R40,41
R42
R42
R42
R43
R43
R43
R44
R45
R46
R46
R47
R48
R47,48
R49
R49
R49
**R49
Agilent Model
All
All
All
All
All
All
All
All
All
6010A, 6011A, 6012B
6015A
All
All
6010A, 6012B, 6015A
6011A
6010A, 6015A
6011A
6012B
All
6010A, 6011A, 6015A
6012B
6012B
All
6010A
6011A
6015A
6010A
6011A
6015A
6012B
6010A, 6015A
6011A
6012B
6010A, 6015A
6011A
6012B
All
All
6010A, 6012B, 6015A
6011A
6010A, 6012B, 6015A
6010A, 6012B, 6015A
6011A
6010A
6011A
6012B
6015A
Agilent Part Number
2100-3353
2100-3273
2100-3350
2100-3273
2100-3274
0157-0470
0757-0464
0698-4509
0757-0280
0698-3260
0757-0471
0698-8827
0698-3449
0757-0458
0757-0442
0683-l055
0683-3355
0683-l555
0698-3455
0698-4536
0698-4536
0698-3455
0683-4725
0699-1210
NOT USED
0699-1744
0699-0118
0699-3104
0699-1210
0699-1742
0699-0059
0699-0642
0699-1743
0699-0118
0699-1211
0757-0199
0698-8816
0683-1255
0698-4359
0757-0470
0757-0458
0757-0458
0699-1745
0698-7496
5060-3404
Description
trimmer 20K 10%
trimmer 2K 10%
trimmer 200 10%
trimmer 2K 10%
trimmer 10K 10%
fxd film 162K 1% 1/8W
fxd film 90.9K 1% 1/8W
fxd film 80.6K 1% 1/8W
fxd film 1K 1% 1/8W
fxd film 464K 1% 1/8W
fxd film 182K 1%
fxd film 1M 1% 1/8W
fxd film 28.7K 1% 1/8W
fxd film 51.1K 1% 1/8W
fxd film 10K 1% 1/8W
fxd film 1M 5% 1/4W
fxd film 3.3M 5% 1/4W
fxd film 1.5M 5% 1/4W
fxd film 261K 1% 1/8W
fxd film 340K 1% 1/8W
fxd film 340K 1% 1/8W
fxd film 261K 1% 1/8W
fxd film 4.7K 5% 1/4W
fxd film 80K .1% .1W
111.1K and 2M in parallel
fxd film 280K 1% .1W
fxd film 20K .1% .1W
fxd film 250K 0.1%
fxd film 80K .1% .1W
fxd film 70K .1% .1W
fxd film 5K .1% .1W
fxd film 10K .1% .1W
fxd film 345K .1% .1W
fxd film 20K .1% .1W
fxd film 95K .1% .1W
fxd film 21.5K 1% 1/8W
fxd film 2.15 1% 1/8W
fxd film 1.2M 5% 1/4W
fxd film 402K 1% 1/8W
fxd film 162K 1% 1/8W
fxd film 51.1K 1%
fxd film 51.1K 1%
fxd film 560K .1% 1/4W
jumper (see W1-3)
fxd film 20K .1% 1/4W
2M(two 1M in series)
*R40 is comprised of two 1% fixed film resistors, 11.1K (0698-6979) and 2M (0683-2055), assembled in parallel.
** R49 is comprised of two 1M 1% fixed film resistors (0698-6369) assembled in series.
65
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
R50
R50
R51
R51
R52
R52
R52
R53
R53
R53
R54
R55
R55
R55
R56
R56
R57
R57
R58
R58
R58
R58
R59,60
R59,60
R59,60
R59,60
R61
R61
R61
R61
R62
R63
R64
R64
R65
R65
R66
R67
R67
R67
R68
R69
R70
R71
R72
R73
R73
R73
R74
R75
R76
66
Agilent Model
6010A, 6015A
6011A, 6012B
6010A, 6012B, 6015A
6011A
6010A, 6015A
6011A
6012B
6010A, 6015A
6011A
6012B
All
6010A, 6015A
6011A
6012B
6010A, 6012B, 6015A
6011A
6010A, 6011A, 6012B
6015A
6010A
6011A
6012B
6015A
6010A
6011A
6012B
6015A
6010A
6011A
6012B
6015A
All
All
6010A, 6012B, 6015A
6011A
6010A, 6011A, 6015A
6012B
All
6010A, 6015A
6011A
6012B
All
All
All
All
All
6010A, 6015A
6011A
6012B
All
All
All
Agilent Part Number
0686-5135
0686-1025
0698-3433
0699-1742
0699-0059
0699-0642
0757-0451
0757-0462
0757-0458
0698-3450
0757-0451
0757-0462
0757-0458
0757-0199
0698-3155
0757-0124
0757-0344
0757-0449
0698-3572
0699-1630
0698-4486
0698-0442
0757-0438
0698-7668
0757-0344
0757-0449
0698-3572
0699-1630
0757-0124
0683-l015
0757-0124
0757-0270
NOT USED
0757-0473
0683-4725
NOT USED
0757-0459
0757-0123
0757-0270
0683-1015
0757-0449
0698-0085
0757-0452
0757-0289
0757-0442
0757-0461
0757-0460
0698-8827
0757-0438
Description
fxd film 51K 5% 1/2W
fxd film 1K 5% 1/2W
jumper (see W1-3)
fxd film 28.7 1% 1/8W
fxd film 70K .1% .1W
fxd film 5K .1% .1W
fxd film 10K .1% .1W
fxd film 24.3K 1% 1/8W
fxd film 75K 1% 1/8W
fxd film 51.1K 1% 1/8W
fxd film 42.2K 1% 1/8W
fxd film 24.3K 1% 1/8W
fxd film 75K 1% 1/8W
fxd film 51.1K 1% 1/8W
fxd film 21.5K 1% 1/8W
jumper (see W1-3)
fxd film 4.64K 1% 1/8W
fxd film 39.2K 1% 1/8W
fxd film 1M 1% 1/8W
fxd film 20K 1% 1/8W
fxd film 60.4K 1% 1/8W
fxd film 4M
fxd film 24.9K 1% 1/8W
fxd film 10K 1% 1/8W
fxd film 5.11K 1% 1/8W
fxd film 39.91K 1%
fxd film 1M 1% 1/4W
fxd film 20K 1% 1/4W
fxd film 60.4K 1% 1/8W
fxd film 4M
fxd film 39.2K 1% 1/8W
fxd film 100 5% 1/4W
fxd film 39.2K 1% 1/8W
fxd film 249K 1% 1/8W
fxd film 221K 1% 1/8W
fxd film 4.7K 5% 1/4w
fxd film 56.2K 1% 1/8W
fxd film 34.8K 1% 1/8W
fxd film 249K 1% 1/8W
fxd film 100 5% 1/4W
fxd film 20K 1% 1/8W
fxd film 2.61K 1% 1/8W
fxd film 27.4K 1% 1/8W
fxd film 13.3K 1% 1/8W
fxd film 10K 1% 1/8W
fxd film 68.1K 1% 1/8W
fxd film 61.9K 1% 1/8W
fxd film 1M 1% 1/8W
fxd film 5.11K 1% 1/8W
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
Agilent Model
Agilent Part Number
Description
R77
All
0683-4715
fxd film 470 5% 1/4W
R78
All
0698-6322
fxd film 4K 1% 1/8W
R79,80
All
0683-2035
fxd film 20K 5% 1/4W
R81
6010A, 6012B, 6015A
0757-0419
fxd film 681 1% 1/8W
R81
6011A
0698-3444
fxd film 316 1% 1/8W
R82
All
0683-4715
fxd film 470 5% 1/4W
R83
All
0698-6322
fxd film 4K 1% 1/8W
R84
All
0698-6320
fxd film 5K .1% 1/8W
R85
All
0698-6983
fxd film 20.4K .1% 1/8W
R86
All
0757-0465
fxd film 100K 1% 1/8W
R87
6010A, 6012B
0698-7933
fxd film 3.83K .1% 1/8W
R87
6011A
0698-6322
fxd film 4K 1% 1/8W
R87
6015A
0699-2850
fxd film 10.01K 0.1% 25PM
R88
6010A
0699-1745
fxd film 500 .1% 1/8W
R88
6011A
0698-8695
fxd film 36K .1% 1/8W
R88
6012B
0698-6979
fxd film 111.1K .1% 1/8W
*R88
6015A
5060-3405
2.5M (two 1.25M in series)
R89-91
All
0683-2225
fxd film 2.2K 55 1/4W
R92
6010A, 6015A
0898-4480
fxd film 15.8K 1% 1/8W
R92
6011A
0757-0457
fxd film 47.5K 1% 1/8W
R92
6012B
0757-0464
fxd film 90.9K 1% 1/8W
R93
All
0683-3325
fxd film 3.3K 5% 1/4W
R94,95
All
0683-2225
fxd film 2.2K 5% 1/4W
R96
All
0757-0481
fxd film 475K 1% 1/8W
R97
All
0757-0290
fxd film 6.19K 1% 1/8W
R98
All
0757-0444
fxd film 12.1K 1% 1/8W
R99
All
0698-4416
fxd film 169 1% 1/8W
R100
All
0757-0404
fxd film 130 1% 1/8W
R101
All
0698-4608
fxd film 806 1% 1/4W
R102
All
0698-4447
fxd film 280 1% 1/8W
R103
All
0698-4416
fxd film 169 1% 1/8W
R104,105
All
0683-4725
fxd film 4.7K 5% 1/8W
R106
6010A, 6015A
0757-0404
fxd film 130 5% 1/8W
R106
6010A, 6011A, 6012B
0683-2715
fxd film 270 5% 1/4W
R107
All
0683-1815
fxd film 180 5% 1/4W
R108
All
0683-2715
fxd film 270 5% 1/4W
R109
All
0683-1815
fxd film 180 5% 1/4W
R110
All
0683-5105
fxd film 51 5% 1/4W
R111
All
0683-2035
fxd film 20K 5% 1/4W
R112
All
0757-0199
fxd film 21.5K 1% 1/8W
R113
All
0757-0283
fxd film 2K 1% 1/8W
R114
All
0683-2225
fxd film 2.2K 5% 1/4W
R115
All
0757-0280
fxd film 1K 1% 1/8W
R116,117
All
0757-0346
fxd film 10 1% 1/8W
R118
All
0698-3498
fxd film 8.66K 1% 1/8W
R119
All
0757-0438
fxd film 5.11K 1% 1/8W
R120
All
0683-4725
fxd film 4.7K 5% 1/4W
R121
All
0683-2025
fxd film 2K 5% 1/4W
R122
All
0683-1025
fxd film 1K 5% 1/4W
R123
All
0683-4715
fxd film 470 5% 1/4W
R124
All
0757-0442
fxd film 10K 1% 1/8W
* R88 is comprised of two 1.25M 0.1% fixed film resistors (0698-6950) assembled in series.
67
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
R125
R126
R127
R128
R129
R130
R131
R132
R133
R134
R135
R136
R137
R138
R139
R140
R141
R142
R143
R144
R145
R146
R147
R148
R149
R150
R150
R151
R152
R153
R154
R155
R156
R157
R158
R159,160
R161
R162
R163
R164
R165
R166,167
R168
R169
R170
R171
R172
R173
R174
R175
R176
68
Agilent Model
All
All
All
All
All
6010A, 6015A
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
6010A, 6015A
6011A, 6012B
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
Agilent Part Number
0757-0465
0757-0442
0698-8827
0698-3136
0698-4121
NOT USED
0757-0449
1810-0205
0683-5625
0683-1025
0683-1855
0757-0420
0698-4435
0757-0199
0683-4725
0683-2025
0683-5135
0683-6835
0683-4725
0757-0415
0683-1005
0683-1035
0683-5115
0757-0422
0683-2025
0754-0404
0683-2715
0683-4725
0757-0442
0757-0443
0757-0451
0757-0444
0683-4725
0683-1005
0686-2005
0686-6215
0757-0283
0757-0442
0757-0283
0757-0434
0683-1035
0686-1315
0683-1515
0757-0124
0698-3136
0757-0280
0811-3174
0683-2225
0683-3625
0683-1525
0683-2225
Description
fxd film 100K 1% 1/8W
fxd film 10K 1% 1/8W
fxd film 1M 1% 1/8W
fxd film 17.8k 1% 1/8W
fxd film 11.3K 1% 1/8W
fxd film 20K 1% 1/8W
resistor network
fxd film 5.6K 5% 1/4W
fxd film 1K 5% 1/4W
fxd film 1.8M 5% 1/4W
fxd film 750 1% 1/4W
fxd film 2.49K 1% 1/8W
fxd film 21.5K 1% 1/8W
fxd film 4.7K 5% 1/4W
fxd film 2K 5% 1/4W
fxd film 51K 5% 1/4W
fxd film 68K 5% 1/4W
fxd film 4.7K 52 1/4W
fxd film 475 1% 1/8W
fxd film 10 52 1/4W
fxd film 10K 52 1/4W
fxd film 510 5% 1/4W
fxd film 909 1% 1/8W
fxd film 2K 5% 1/4W
fxd film 130 5% 1/4W
fxd film 270 5% 1/4W
fxd film 4.7K 5% 1/4W
fxd film 10K 1% 1/8W
fxd film 11K 1% 1/8W
fxd film 24.3K 1% 1/8W
fxd film 12.1K 1% 1/8W
fxd film 4.7K 5% 1/4W
fxd film l0 52 1/4W
fxd comp 20 5% 1/2W
fxd comp 620 5% 1/2W
fxd film 2K 1% 1/8W
fxd film l0K 1% 1/8W
fxd film 2K 1% 1/8W
fxd film 3.65K 1% 1/8W
fxd film 10K 5% 1/4W
fxd comp 130 5% 1/2W
fxd comp 150 5% 1/4W
fxd film 39.2K 1% 1/8W
fxd film 17.8K 1% 1/8W
fxd film 1K 1% 1/8W
fxd WW .07 5% 5W
fxd film 2.2K 5% 1/4W
fxd film 3.6K 5% 1/4W
fxd film 1.5K 55 1/4W
fxd film 2.2K 5% 1/4W
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
R177
R178,179
R180
R181
R182
S1
U1-3
U4,5
U6
U7
U8
U9
U10
U11
U11
Agilent Model
All
All
All
All
All
All
All
All
All
All
All
All
All
6010A, 6012B
6011A
U11
U12
U12
6015A
6010A, 6012B
6011A
5060-2942
1826-0527
U12
U13
U14
U14
6015A
All
6010A, 6015A
6011A, 6012B
U15
U16
U17
U18
U19
U20
U21
U22
U23
VR1
VR2
VR3,4
VR5
VR6
W1-3
(R51,VR6)
W1-3 (R49,
R51, VR6)
Y1
Y1
All
All
All
All
All
All
All
All
All
All
All
All
All
All
6010A, 6012B, 6015A
5060-2943
1820-1287
NOT USED
Correct Designation is
Q11
1820-1272
1820-1437
1826-0138
1820-1205
1820-1112
1820-2096
1826-0544
1826-0428
1826-0065
1902-3110
1902-0777
1902-0018
1902-0575
6011A
6010A, 6011A, 6015A
6012B, 6015A
6010A, 6012B, 6015A
6011A
6011A
6011A
Agilent Part Number
0683-0335
0683-4725
0683-l045
0683-3335
0698-8827
3101-2097
1826-0493
1826-0161
1826-0346
1826-0544
1826-0138
1820-0935
1826-0065
1826-0393
Description
fxd film 3.3 5% 1/4W
fxd film 4.7K 5% 1/4W
fxd film 100K 5% 1/4W
fxd film 33K 5% 1/4W
fxd film 1M 1% 1/8W
switch (6) 1A
IC op-amp
IC op-amp
IC op-amp
IC voltage regulator
IC voltage reg. Dual trkg.
IC counter CMOS
IC comparator
IC voltage regulator
IC voltage regulator (incorporated into
heatsink assy 5060-2942, see A2
Mechanical)
IC volt reg/HS assy
IC voltage regulator
IC voltage regulator (incorporated into
heatsink assy 5060-2943, see A2
Mechanical)
IC volt reg/HS assy
IC buffer TTL LS
7175-0057
IC buffer TTL LS
IC multivibrator TTL LS
IC comparator
IC gate TTL LS
IC flip flop -type
IC counter TTL LS
IC voltage reg
IC voltage regulator
IC comparator
zener 5.9V 2%
zener 6.2V
zener 6.8V
zener 6.5V 2S
jumper (see W1-3)
jumper
7175-0057
jumper
0960-0586
1960-0586
A2 MECHANICAL
1205-0282
5060-2942
5060-2943
5060-2944
resonator- cer
resonator- cer
heat sink (Q9,U11,U12)
heatsink assy (includes U11)
heatsink assy (includes U12)
heatsink assy (includes Q9)
69
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
J1,2
J3
J4
J5,6
J15
TB1
TB2
A3
A3
A3
A3
C1
C2
C3
C4-6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17-19
CR1,2
CR3-5
DS1-8
DS9,10
DS9,10
DS11-13
DS11-13
R1-17
R18
R19-37
R38
R39
R40-44
R45
R46-54
R55
R56
R56
R56
R57
70
Agilent Model
All
All
All
All
All
All
All
All
All
6010A
6011A
6012B
6015A
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
6010A, 6015A
6011A, 6012B
6010A, 6015A
6011A, 6012B
All
All
All
All
All
All
All
All
All
6010A
6011A
6012B, 6015A
All
Agilent Part Number
1200-0485
1200-0181
1251-8417
1251-7743
1251-8676
1251-5240
1251-0600
0360-2195
0360-2192
06010-60020
06011-60020
06012-60036
06010-60023
0160-5893
0160-0168
0160-4835
0160-5422
NOT USED
0160-5893
0160-0168
0160-4835
0160-5422
NOT USED
0160-4835
0160-5422
0160-4831
0160-4807
0160-5422
1901-0050
1901-0033
1990-0985
1990-0995
1990-0521
1990-0895
1990-0524
0683-2015
0698-3456
0683-2015
0683-1045
NOT USED
0683-2015
0698-3456
0683-2015
0683-1045
0698-8871
0698-6348
0698-6362
NOT USED
Description
IC socket (S1)
insulator, (Q8)
connector 16-pin
connector 26-pin
connector 5-pin
connector 20-pin
connector 1-pin
barrier block 6-pos.
barrier block 2-pos.
Front Panel Board
Front Panel Board
Front Panel Board
Front Panel Board
fxd plyprpln .047µF 10% 100V
fxd poly 0.1µF 10% 200V
fxd cer 0.1µF 10% 50V
fxd cer .047µF 20% 50V
fxd plyprpln .047µF 10% 100V
fxd poly 0.1µF 10% l00V
fxd cer 0.1µF 10% 50V
fxd cer .047µF 20% 50V
fxd cer 0.1µF l0% 50V
fxd cer .047µF 20% 50V
fxd cer 4700pf l0% l00V
fxd cer 33pf 5% l00V
fxd cer .047µF 20% 50V
photoswitch IF=350ma VAX=15V
diode gen prp 180V 200ma
display kit
led green IF=30ma BVR=5V
led green IF=30ma BVR=5V
led yellow IF=20ma BVR=5V
led yellow IF=20ma BVR=5V
fxd film 200 5% 1/4W
fxd film 287K 1% 1/8W
fxd film 200 5% 1/4W
fxd film 100K 5% 1/4W
fxd film 200 5% 1/4W
fxd film 287K 1% 1/8W
fxd film 200 5% 1/4W
fxd film 100K 5% 1/4W
fxd film 953 1% 1/8W
fxd film 3K 1% 1/8W
fxd film 1K .1% 1/8W
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
R58
R58
R58
R59
R60-62
R63
R64
R65,66
R65,66
R67
R67
R67
R68
R68
R69
R70
R70
R70
R71
R71
R72
R73
R74
R75
R76
R77
R77
R78
R79
R80
R81
R82
R83
R83
R83
R84
R84
R84
R84
R85
R86
R87
R88
R89
R90
R91
R92
R93
R94
R95
R96
Agilent Model
6010A
6011A
6012B, 6015A
All
All
All
All
6010A, 6011A, 6012B
6015A
6010A, 6011A
6012B
6015A
6010A, 6011A, 6015A
6012B
6010A, 6011A, 6015A
6010A, 6011A
6012B
6015A
6010A, 6011A, 6015A
6012B
All
All
All
All
All
6010A, 6011A, 6012B
6015A
All
All
All
All
All
6010A
6011A, 6012B
6015A
6010A
6011A
6012B
6015A
All
All
All
All
All
All
All
All
All
All
All
All
Agilent Part Number
0698-0533
0698-6392
0699-1212
0683-6215
0683-2015
0683-5125
0683-1025
0683-5615
0683-3201
0757-0449
0757-0453
0757-5615
0698-3201
0757-0449
0757-0442
0698-7353
0698-4493
0698-6671
0757-0280
0698-3476
0698-6362
0757-0452
NOT USED
0683-5135
0757-0441
0698-3159
NOT USED
0757-0458
0683-1025
0683-5135
0683-3025
0683-1025
0698-6363
0698-6343
0698-6322
0698-6563
0698-6363
0698-8861
0699-1211
0757-0438
0683-5135
0757-0199
0683-3925
0698-5808
0686-6815
0757-0452
NOT USED
0683-2025
0757-0280
0683-l035
0683-5125
Description
fxd film 4.64K 0.1% 1/8W
fxd film 22K 0.1% 1/8W
fxd film 19K 0.1% 1/8W
fxd film 620 52 1/4W
fxd film 200 5% 1/4W
fxd film 5.1K 5% 1/4W
fxd film 1K 5% 1/4W
fxd film 560 5% 1/4W
fxd film 560 5% 1/4W
fxd film 20K 1% 1/8W
fxd film 30.1K 1% 1/8W
fxd film 20K 1% 1/8W
fxd film 80K 1% 1/8W
fxd film 20K 1% 1/8W
fxd film 10K 1% 1/8W
fxd film 19K 1% 1/8W
fxd film 34K 1% 1/8W
fxd film 7K 0.25% 1/8W
fxd film 1K 1% 1/8W
fxd film 6K 1% 1/8W
fxd film 1K 0.1% 1/8W
fxd film 27.4K 1% 1/8W
fxd film 51K 5% 1/4W
fxd film 8.25K 1% 1/8W
fxd film 26.lK 1% 1/8W
fxd film 51.1K 1% 1/8W
fxd film 1K 5% 1/4W
fxd film 51K 5% 1/4W
fxd film 3K 5% 1/4W
fxd film 1K 5% 1/4W
fxd film 9K 0.1% 1/8W
fxd film 9K 0.1% 1/8W
fxd film 4K 0.1%
fxd film 40K 0.1% 1/8W
fxd film 40K 0.1% 1/8W
fxd film 6.66K 0.1% 1/8W
fxd film 95K 0.1%
fxd film 5.11K 1% 1/8W
fxd film 51K 5% 1/4W
fxd film 21.5K 1% 1/8W
fxd film 3.9K 5% 1/4W
fxd film 4K 1% 1/8W
fxd comp 680 5% 1/2W
fxd film 27.4K 1% 1/8W
fxd film 2K 5% 1/4W
fxd film 1K 1% 1/8W
fxd film 10K 5% 1/4W
fxd film 5.1K 5% 1/4W
71
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
R97
R98
R98
R99,100
S1,2
U1,2
U3
U4
U5
U6
U7
U8
VR1
VR2
W1
W2,4
W2,3
W3,5-7
W5
W6,7
W8
W8
Agilent Model
All
6010A, 6012B, 6015A
6011A
All
All
All
All
All
All
All
All
All
All
All
All
All
6011A, 6012B
6010A, 6015A
6011A, 6012B
6011A, 6012B
6010A
6015A
J3
All
6010A, 6015A
6011A, 6012B
Agilent Part Number
2100-1775
0698-4457
0757-0415
See Chassis Electrical
5060-9436
1826-0876
1820-1144
1826-0502
1826-0138
1826-0493
1826-0346
1826-0502
1902-3092
1902-0064
8159-0005
7175-0057
7175-0057
NOT USED
NOT USED
7175-0057
7175-0057
NOT USED
A3 MECHANICAL
1251-5055
5041-0309
4040-2121
A4
All
06011-60023
C1
All
0160-4569
C2
All
0160-5981
C3
All
0160-4569
C4
All
0160-5981
C5,6
All
0160-4835
C7
6010A, 6011A, 6012B
0180-0116
C7
6015A
0180-4132
C8
All
0130-0228
**CR1
6010A, 6011A, 6012B
1901-1418
CR1
6015A
5060-9667
CR2,3
All
1901-1087
**CR4
All
1901-1418
CR5-11
6010A, 6011A, 6015A
1901-0050
CR5
6012B
NOT USED
CR6-11
6012B
1901-0050
F1,2
All
2110-0671
L1-4
All
9100-1610
Q1-4
All
1855-0473
Q5,6
All
1854-0585
R1-4
All
0811-1065
R5-8
All
0698-3609
** If either diode needs replacement, replace both diodes.
72
Description
var. ww. trimmer 5K 5%
fxd film 576 ohms 1% 1/8W
fxd film 475 1% 1/8W
switch, rockerarm
IC Converter A/D CMOS
IC NOR Gate TTL LS Quad
Analog Switch, 4SPST, 14pin dip
IC Comparator, quad, 14pin dip
IC Op Amp, Low-Bias-Hi-Impd.
IC Op Amp, gen. purpose
Analog Switch, 4SPST, 14pin dip
diode, zener, 4.99V 2%
diode, zener, 7.5V 5%
res. 0 ohms
jumper, solid tinned copper
jumper, solid tinned copper
jumper, solid tinned copper
jumper, solid tinned copper
Connector Post Type
key cap (ref. S1,S2)
Plastic-misc (ref. DS9-13)
FET Board
fxd poly .01uf 10S% 800Vdc
fxd poly .047µF 10% 630Vdc
fxd poly .01µF 10% 800Vdc
fxd poly .047µF 10% 630Vdc
fxd cer .1µF 10% 50V
fxd elect 6.8µF 10% 35V
fxd elect 6.8µF 10% 35V
fxd elect 22µF 10% 15V
diode rect. /HA assy
diode rect. /HA assy
pwr rect. 600V
diode rect. /HA assy
diode-switching 80V 200ma
diode-switching 80V 200ma
fuse .125A 125V
coil 150µH 20%
MOS FET N chan.
NPN Si
fxd ww 0.2 5% 1/2W
fxd met 22 5% 1/2W
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
R9-11
R12
R13-16
R17-19
R20
R21
R22
R23,24
R25
R26
R27
R28
R29-33
R34
TS1
T1
T2
U1-3
VR1,2
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
Agilent Model
Agilent Part Number
0698-5139
0757-0466
0698-3609
0698-5139
0757-0379
0683-1505
0683-1815
0686-2005
0757-0466
0683-1815
0757-0379
0683-1505
0683-0475
0683-0275
3103-0081
06011-80091
06011-80095
1820-l050
1902-0779
P1
6010A, 6012B
All
All
All
All
All
A4 MECHANICAL
1205-0398
1252-0093
06032-20001
06032-20002
0380-1524
1252-1053
A5
A5
A5
A5
C1
C1
C2
C2
C2
C2
C3
C3
C4
C4
C4,5
C5
C5
C6
C7
CR1
CR1
CR2
6010A
6011A
6012B
6015A
6010A, 6012B, 6015A
6011A
6010A
6011A
6012B
6015A
6010A, 6012B, 6015A
6011A
6010A, 6012B
6015A
6011A
6010A
6015A
6010A
6015A
6010A, 6012B, 6015A
6011A
6010A, 6012B, 6015A
06030-60024
06011-60024
06032-60029
06030-60029
0180-3167
0160-4832
0160-5464
0160-5422
0160-4569
0160-7222
0160-5422
0180-3167
0160-4832
0160-4835
0160-6077
0160-5464
0160-7222
see chassis electrical
0160-5166
1901-0050
5080-2068
1901-0731
Description
fxd comp 3.9 5% 5W
fxd film 110K 1% 1/8W
fxd met 22 5% 2W
fxd comp 3.9 5% .5W
fxd film 12.l 1% 1/8W
fxd film 15 5% 1/4W
fxd film 180 5% 1/4W
fxd comp 20 5% 1/2W
fxd film 1l0K 1% 1/8W
fxd film 180 5% 1/4W
fxd film 12.1 1% 1/8W
fxd film 5% 1/4W
fxd film 4.7 5% 1/4W
fxd film 2.7 5% 1/4W
switch-therm +202F
Transformer
Transformer
DRVR TTL NOR DUAL
zener 11.8V 5%
heatsink (ref. CR1,4)
socket pin (ref. Q1-4)
heatsink (ref. Q1,Q2)
heatsink (ref. Q3,Q4)
standoff (8mm)
connector 64-pin
Diode Board
Diode Board
Diode Board
Diode Board
fxd elect 1000µF 20% 25V
fxd cer .01µF 10% 100V
fxd poly .01µF 5% 1.5KVdc
fxd cer .047µF 20% 50Vdc
fxd poly .01µF 10% 800Vdc
fxd poly .0022µF 1600Vdc
fxd cer .047µF 20% 50Vdc
fxd cer 1000µF 25Vdc
fxd cer .01µF 10% 100Vdc
fxd cer .01µF
fxd poly pr 0.015µF 200V
fxd poly .01µF 5% 1.5KVdc
fxd poly .0022µF 1600Vdc
fxd cer 0.015µF 100V
diode-switching 80V 200ma
rectifier matched pair (with CR5)
pwr rectifier 400V 1A
73
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
CR3
CR2,3
CR4,5
CR4,5
CR4
CR4
CR5
CR6
F1
F1
F1
L1,2
L1,2
L1,2
L1
Agilent Model
6010A, 6012B, 6015A
6011A
6010A
6015A
6011A
6012B
6011A
6010A, 6015A
6010A
6011A
6012B
6010A
6011A
6015A
6012B
L3
Q1
Q1
Q1
Q2
Q2
R1
R1
R2
R2
R3
R3
R3
R4
R4
R4
R5
R5
R6
R6
R7
R7
R7
R8
R8
R9
R9
R9
R9
R10
R10
R10,11
R11
R11
6010A, 6015A
6010A, 6015A
6011A
6012B
6011A
6012B
6010A, 6012B, 6015A
6011A
6011A
6010A, 6012B, 6015A
6010A, 6012B
6011A
6015A
6010A, 6012B
6011A
6015A
6010A, 6012B, 6015A
6011A
6010A, 6012B, 6015A
6011A
6010A, 6015A
6011A
6012B
6010A, 6012B, 6015A
6011A
6010A
6011A
6012B
6015A
6010A, 6015A
6012B
6011A
6010A, 6015A
6012B
74
Agilent Part Number
1901-0050
1901-0050
1901-1542
1901-1388
1901-0731
1901-1182
5080-2068
1902-3203
NOT USED
2110-0699
2110-0546
9170-1334
9170-1272
5080-2132
06012-80003
9170-0707
9170-0894
1855-0767
1854-0264
1855-0549
1855-0549
1854-1070
0683-1855
0811-3460
0686-1005
0698-3151
0757-0459
0683-1025
0757-0459
0698-3202
0757-0317
0698-3202
0757-0317
0698-4196
0683-l045
0698-4211
0683-2735
0757-0465
0683-1025
0698-7332
0757-0447
0698-8144
0757-0428
0757-0480
0683-2055
0698-3512
0698-4196
0698-3601
NOT USED
0686-1005
Description
diode-switching 80V 200ma
diode-switching 80V 200ma
pwr rectifier 400V 50A
diode pwr rectifier
pqr rectifier 400V 1A
pqr rectifier 300V 50A
rectifier matched pair (with CR1)
diode 14.7V 5% 400mW
fuse 5A 125V (axial)
fuse 5A 125V (axial)
ferrite core for L1,2
core-magnetic ferrite
inductor
snubber wire
ferrite core for L1
core-shield bead (ref. Q1)
MOS FET N chan
NPN Si
MOS FET N chan
FET N-CHAN
NPN Si
fxd film 1.8M 5% 1/4W
fxd ww 0.05 5% 5W
fxd comp 10 5% 1/2W
fxd film 2.87K 1% 1/8W
fxd film 56.2K 1% 1/8W
fxd film 1K 5% 1/8W
fxd film 56.2K 1% 1/8W
fxd film 1.74K 1% 1/8W
fxd film 1.33K 1% 1/8W
fxd film 1.74K 1% 1/8W
fxd film 1.33K 1% 1/8W
fxd film 1.07K 1% 1/8W
fxd film 100K 5% 1/4W
fxd film 158K 1% 1/8W
fxd film 5% 1/4W
fxd film 100K 1% 1/8W
fxd film 1K 5% 1/8W
fxd film 1M 1% 1/8W
fxd film 16.2K 1% 1/8W
fxd film 787K 1% 1/8W
fxd film 1.62K 1% 1/8W
fxd film 432K 1% 1/8W
fxd film 2M 5%
fxd film 1.13K 1% 1/8W
fxd film 1.07K 1% 1/8W
fxd film 10 5% 2W
fxd comp 10 5% 1/2W
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
R12
R12,13
R13
R14
R14
R14
R14
R15-18
R15-18
R15
R15
R16
R17
R18
R19
R19
R19
R20
TS1
TS1
U1
VR1
VR1
P1
A6
C101
C101
C102
C102
C103
C103
Agilent Model
6010A, 6015A
6011A
6010A, 6012B, 6015A
6010A
6011A
6012B
6015A
6010A
6015A
6011A
6012B
6011A
6011A
6011A
6010A
6011A
6015A
6010A, 6015A
6010A, 6011A, 6015A
6012B
All
6010A
6011A, 6012B, 6015A
Agilent Part Number
0757-0447
0698-3609
0683-1005
0811-1746
0757-0459
0811-3290
0811-0923
0811-3729
0811-3842
0683-1855
0811-1068
0698-7332
0698-3151
0683-1005
0689-8144
0811-1903
0683-2055
0811-3731
3103-0082
3103-0081
1826-0346
1902-0515
1902-0575
Description
fxd film 16.2K 1% 1/8W
fxd met 22 5% 2W
fxd film 10 5% 1/4W
fxd ww .36 5% 2W
fxd film 56.2K 1% 1/8W
fxd ww .1 5% 2W
fxd ww 0.91ohms 2W
fxd ww 250 5% 10W
fxd ww 600 ohms 10W
fxd film 1.8M 5% 1/4W
fxd ww 50 5% 10W
fxd film 1M 1% 1/8W
fxd film 2.87K 1% 1/8W
fxd film 10 10% 1/4W
fxd film 787K 1% 1/8W
fxd ww 100 5% 10W
fxd film 2M 5%
fxd ww 1.2 5% 2W
switch-thermal 200 degree/C
switch-thermal 202 degree/C
IC OP-Amp
zener 6.5V 2%
zener 6.5V 2%
6010A, 6015A
6010A, 6012B
6012B
6011A
6011A
6011A
6012B
6012B
6010A, 6015A
6010A, 6015A
6010A, 6015A
All
6010A, 6015A
6010A, 6015A
6011A
6011A
6015A
A5 MECHANICAL
5020-2878
1205-0398
1252-0093
1205-0520
06011-20001
1205-0398
06032-00018
06032-00017
1251-7600
5020-2877
5020-2878
1251-1053
0340-1123
5080-2065
06011-00001
8150-4777
2190-0100
heatsink (ref. Q1)
heatsink (ref. Q1)
socket pin (ref. Q2)
heatsink (ref. Q1)
heatsink (ref. diodes)
heatsink (ref. Q2)
outer heatsink
heatsink bracket
connector sgl. Cont. skt.
front heatsink (ref. CR5)
rear heatsink (ref. CR4)
connector 64-pin
Insulator (ref. L1,2)
Jumper (ref. L1,2)
bracket (ref. diode heatsink)
wire snubber (ref. T1, L1, L2)
lockwasher (CR4 to HS)
All
6010A, 6011A, 6012B
6015A
6010A, 6011A, 6012B
6015A
6010A, 6011A, 6012B
6015A
5060-3522
0160-4355
0160-4048
0160-4281
0160-4439
0160-4355
0160-4048
AC Input Filter
fxd met .01µF 10% 250Vac
fxd ppr-met .022µF 250V
fxd met 2200pf 20% 250Vac
fxd ppr-met .0047µF 250V
fxd met .01µF 10% 250Vac
fxd ppr-met .022µF 250V
75
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
C104
C105
C106,107
C106,107
C108,109
L101
R101
W101-103
Agilent Model
6010A, 6011A, 6012B
All
6010A, 6011A, 6012B
6015A
All
All
All
All
TB110
All
A9
C1,2
C3
CR1
CR2,3
R1-4
6015A
6015A
6015A
6015A
6015A
6015A
6015A
W1
W7
W8
All
6011A
6011A
6015
All
All
All
All
6010A
6011A
6012B
6015A
All
All
6012B, 6015A
All
All
All
All
All
All
6010A, 6011A, 6012B
All
All
All
All
All
76
Agilent Part Number
0160-4281
0160-4962
0160-4183
0160-4439
0160-4962
66000-80004
0686-3945
1251-5613
A6 MECHANICAL
0360-2217
0180-4231
0160-2569
1901-0325
1901-0759
0764-0027
A9 MECHANICAL
06030-0005
CABLING
06011-60001
5060-2864
CHASSIS
MECHANICAL
5021-8403
5041-8802
5001-0539
06032-00015
06010-00009
06011-00009
06012-00018
06015-00001
0370-1091
5041-0309
5041-2089
4040-1954
06032-00025
06032-00024
06032-00011
06032-00012
0380-1362
06023-00026
1510-0044
0400-0086
0380-1692
5001-6739
5001-6738
Description
fxd met 2200pf 20% 250Vac
fxd poly 1µF 20% 250Vac
fxd met 1000pf 20% 250Vac
fxd ppr-met .0047µF 250V
fxd poly 1µF 20% 250V
choke, input
fxd comp 390K 5% .5W
connector, single
Barrier Block 3-pos
OUTPUT BOARD
fxd elect 750µF 350V
fxd cer 0.02µF 2KV
diode 700V 35A
diode 600V PRV 3A
fxd met 75K 5% 2W
heatsink (ref. CR1)
ribbon cable (A2 to A3)
see A1 Main Board
see A1 Main Board
cable assy (ref. fan)
front frame casting
top trim strip
side trim strip
front sub-panel
lettered front panel
lettered front panel
lettered front panel
lettered front panel
knobs
plain key cap (ref. Front)
lettered key cap
display window
Chassis
Internal cover (under top cover, lettered)
air baffle (ref. fan, attached to rear panel,
sheet metal)
DC output mounting plate
standoff (12mm)
cover plate (ref. rear panel)
binding post, single,(ref. rear panel ground)
insulated bushing (ref. rear panel AC Input
Board)
standoff (l09.4mm)
top cover
bottom cover
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
Agilent Model
All
6010A, 6015A
6011A, 6012B
6010A, 6015A
All
All
All
All
6010A, 6015A
6015A
6015A
6015A
6015A
6015A
6015A
6015A
5040-1625
5062-3703
5041-8819
5041-8820
5041-8801
06032-000l0
2190-0587
3050-0894
0535-0077
0515-0155
0515-0064
0515-0156
0515-0210
6015A
0515-0211
6010A, 6011A, 6015A
0515-0413
6015A
0515-0414
6015A
0515-0610
6015A
6015A
0515-0642
0515-0751
6015A
6015A
6015A
6015A
0515-0896
0515-0968
0515-1132
0515-0031
10,11,15
10,11,15
10,11,15
15
15
B1
B1
C6
Agilent Part Number
5040-1626
5040-1627
5060-3237
6010A, 6012B, 6015A
6011A
6010A
0515-0964
2190-0586
3050-0893
06671-40002
06671-40003
CHASSIS
ELECTRICAL
3160-0097
3160-0381
0160-2569
Description
DC output cover (ref. Barrier Block.)
AC output cover (ref. AC line cord)
AC output cover with strain relief (ref. AC
line cord)
strain relief (power cord)
strap handle
handle retainer (front)
handle retainer (back)
Foot
bus bar-output
lockwashers
flatwashers
hex nuts
screw mach M5x0.8 (ref. bus bar)
screw mach M3x0.5 (ref. fan)
screw mach M4x0.7 (ref. ac input cover)
screw mach M4x0.7 (ref. baffle, top cover,
diode board to main board, frame casting to
frame)
screw mach M3x0.5 (ref. rear plate, output
bus assy)
screw mach M3x0.7 (ref. main board to
chassis, ac input board, front panel)
screw mach M4x0.7 (ref. line choke, bus bar
cover)
screw mach M5x0.8 (ref. bus bar to main
board)
screw mach (ref. bus bar )
screw mach M4x0.7 (ref. pwr xmfr, relay, ac
input board )
screw mach M4x0.7 (ref. inside top cover )
screw mach (ref. output bus assy))
screw mach M5x0.8 (ref. strap handle))
nut hex w/lkwr (ref. fan front panel to
subpanel)
screw (ref. bias transformer A1T3)
lock washer (ref. bias transformer A1T3)
flat washer (ref. bias transformer A1T3)
clamp (ref. bias transformer A1T3)
bracket (ref. bias transformer A1T3)
Fan
Fan
fxd cer 0.02µF 20% 2KVdc
77
Table 5-3. Replaceable Parts List (continued)
Ref. Desig.
C28
C28
C28
C30
C30
C31
C34
CB1
L4
R20-23
R99,100
S3
78
Agilent Model
6010A
6012B
6015A
6010A
6011A
6011A
6010A
All
All
6015A
All
All
Agilent Part Number
0180-3703
0180-3491
NOT USED
0160-4962
0160-0381
0180-3491
0160-6805
3105-0126
5080-2307
0699-0208
2100-4060
3101-0402
Description
fxd elect 1500µF 250V
fxd elect 2600µF 75V
fxd poly 1.0µF 20%
fxd poly .01µF 10% 400V
fxd elect 10,000µF 40V
fxd poly .01µF 10% 400V
Circuit Breaker 4A 65Vdc
choke (input line)
fxd comp 1 5% 1/4W
5K pot. (ref. Frt. Panel)
switch DPST (on/off)
6
Component Location and Circuit Diagrams
This chapter contains component location diagrams, schematics, and other drawings useful for maintenance of the power
supply. Included in this section are:
a.
b.
c.
Component location illustrations (Figures 6-1 through 6-8), showing the physical location and reference designators of
almost all electrical parts. Components located on the A6 AC Input Board and on the output filter board mounted on
the output bus bars are easily identified by reference designators silkscreened on the boards.
Notes (Table 6-1) that apply to all schematic diagrams.
Schematic diagrams (Figures 6-9 through 6-13).
AC line voltage is present on the A1 Main Board Assembly whenever the power cord is connected to an ac
power source.
79
Table 6-1. Schematic Diagram Notes
1.
.
2.
denotes front-panel marking.
denotes rear-panel marking.
3.
Complete reference designator consists of component reference designator prefixed with assembly number
(e.g.: A2R14).
4.
Resistor values are in ohms. Unless otherwise noted, resistors are either 1/4W, 5% or 1/8W, 1%. Parts list provides
power rating and tolerance for all resistors.
5.
Unless otherwise noted, capacitor values are in microfarads.
6.
Square p.c. pads indicate one of the following:
a. Pin 1 of an integrated circuit.
b. The cathode of a diode or emitter of a transistor.
c. The positive end of a polarized capacitor.
7.
In schematic symbols drawn to show right-to-left signal flow, blocks of information are still read left to right. For
example:
ž indicates shift away from control block (normally down and to right).  indicates shift toward control block
(normally up and to left).
8.
9.
indicates multiple paths represented by only one line. Reference designators with pin
numbers indicate destination, or signal names identify individual paths. Numbers
indicate number of paths represented by the line.
For single in-line resistor packages, pin 1 is marked with a dot. For dual in-line integrated circuit packages, pin 1 is
either marked with a dot, or pin 1 is to the left (as viewed from top) of indication at end of integrated circuit
package. e.g.:
80
Table 6-1. Schematic Diagram Notes (continued)
Pin locations for other semi-conductors are shown below:
81
Figure 6-1. Top View, Top Covers Removed
82
Figure 6-2. Main Board (A1) and Filter Board (A6) Component Location
83
Figure 6-3. Control Board (A2) Component Location
84
Figure 6-4. Front Panel Board (A3) Component Location
85
Figure 6-5. FET Board (A4) Component Location
86
Figure 6-6. Diode Board (A5) Component Location
87
A
System Option 002 (6010A, 6011A, 6012B)
General Information
This option facilitates the operation of the power supply in an automated system. Four major circuit blocks provide:
1 ) remote analog programming of the supply's output by three different control methods; 2) signals indicating the power
supply modes and conditions; 3) two different digital methods of remote control; and 4) the outputs of three bias supplies
for use with external circuitry.
The power supply equipped with this option can be operated from either a 6940B Multiprogrammer equipped with a
69520A power supply programming card or a 6942A Multiprogrammer equipped with a 69709A power supply
programming card.
Remote Programming. Through this interface both the output voltage and current can be remote programmed by either an
external voltage source, resistance, or a current sink.
Status Indicators. Six optically isolated lines provide open-collector digital outputs which indicate the following states:
constant voltage mode, constant current mode, output unregulated, ac dropout, overvoltage, and overtemperature.
Remote Control. Two optically isolated methods of remote control are available. 0ne method requires a negative going
edge, which sets a latch on the 002 card to inhibit the power supply. The latch and OVP are reset by a negative-going pulse
on another input line. The second method of remote control requires a low logic level to inhibit the power supply for the
duration of the low level.
Bias Supplies. The outputs of three bias supplies are also available at the option connector. These outputs are + 15V, -15V,
and +5V.
Monitoring. The 002 Option Board provides two monitoring outputs (I.MON. and V.MON) available at the option
connector. They both vary from 0 to 5V corresponding to a 0 to full scale output.
Other modes of operation, such as multiple supply system control, are described in detail in later paragraphs. Modes such as
Auto series, Auto Parallel, and Auto tracking operation are described in the Operating Manual.
Specifications
Table A-1 provides specifications for the Option 002. This table is referred to periodically throughout the text of this
Appendix.
Option 002 Hardware
The Option 002 hardware consists of a single printed circuit board installed at the right side (facing the front panel) of the
chassis. Two cables connect the option board to the A2 control board at A2J1 and A2J2. Connections between the option
board and external circuits are made via the 37-pin connector mounted on the option board and available at the rear of the
power supply. A mating connector is also included for the user's convenience.
89
Table A-1. Specifications, Option 002
Remote Programming
Resistance Programming: 0 to 4 k ohm provides 0 to maximum rated voltage or current output.
Accuracy:
@25°C ±5°C
CV: 0.5% ± 235mV (6010A)
CC: 1.0% ± 170mA (6010A)
0.5% ± 35mV (6011A)
1.0% ± 800mA (6011A) *
0.5% ± 70mV (6012B)
1.0% ± 500mA (6012B)
Voltage Programming: 0 to 5V provides 0 to maximum rated voltage or current output.
Accuracy:
@25°C ± 5°C
CV: 0.3% ± 235mV (6010A)
CC: 0.36% ± 170mA (6010A)
0.25% ± 35mV (6011A)
0.4% ± 800mA (6011A) *
0.3% ± 70mV (6012B)
0.36% ± 500mA (6012B)
Current Programming: 0 to 2mA current sink provides 0 to maximum rated voltage or current output.
@25°C ± 5°C
0.25% ± 2mV (6011A)
CV: 0.43% ± 235mV (6010A)
0.30% ± 35mV (6011A) *
CC: 0.50% ± 170mA (6010A)
* After 5 minute warm-up.a
Input Compliance Voltage: ± 1V
Accuracy:
0.43% ± 71mV (6012B)
0.50% ± 500mA (6012B)
Current Programming Enable:
Relays K2 (CV) and K1 (CC) are biased from the Control Isolator Bias input (see Remote Shutdown and OVP Clear)
Relay Bias Voltage: +4V minimum + 7V maximum
Relay Resistance: 500Ω ± 10%
Note
For Control Isolator Bias voltages greater than 7V, a series resistor must be used to maintain the relay bias voltage within
specified limits.
Enabling either relay is accomplished by bringing CV or CC enable line to Control Isolator Bias common via a suitable
driver; maximum driver off-state leakage =0.5mA.
Output Voltage and Current Monitor: 0 to 5V output indicates 0 to maximum rated output voltage or current.
Accuracy:
@25°C ± 5°C
CV: 0.3% + 60mV (6010A)
CC: 0.36% + 10mA (6010A)
0.3% ± 15mV (6011A, 6012B)
0.36% ± 20mA (6011A, 6012B)
Output Impedance: 10.2 k ohm ± 5%
Temperature Coefficient:
CV: 12.5 ppm/°C +2.4mV/°C (6010A)
CC: 47 ppm/°C + 0.54mA/°C (6010A)
12.5 ppm/°C +810µV/°C (6011A, 6012B)
47 ppm/°C + 1.6mA/°C (6011A, 6012B)
Status Indicators:
Status Isolator Bias input (referred to Status Isolator Common)
90
Table A-1. Specifications, Option 002 (continued)
Voltage Range: +4.75V to 16V
Current Drain: 20mA maximum
Status Indicator output:
Open collector output:
Maximum Output Voltage (logic high): + 16V
Logic Low output: + 0.4V maximum at 8mA
Remote Control (Trip, Reset, Inhibit) Control Isolator Bias Input.
Voltage Range: +4.75V to 16V
Remote Control Inputs ( Remote Trip , Remote Reset ) Remote Inhibit
On State (logic low):
Minimum forward current required (If): 1.6mA Isolator forward voltage (Vf) at 1.6 mA (If): 1.4V typical, 1.75
maximum.
For Control Isolator Bias voltage greater than ± 5V, an optional resistor (Ropt) may be added to reduce drive current .
Off state ( logic high) maximum leakage current: 100µA.
REMOTE TRIP and REMOTE RESET Timing
Pulse duration (TL): 15µS minimum
Reset time (TH): 125µs minimum
Set-up time (Ts): 25µs minimum
OVP clear delay: 1 sec ± 30% Bias Supplies DC output Ratings:
Power-on Preset
Output Ratings: open collector output (referred to power supply common).
Maximum output voltage (logic high): + 16V
Logic low output: +0.4V maximum at 8mA
91
Table A-1. Specifications, Option 002 (continued)
Pulse Timing
Low Bias or AC DROPOUT will go false after 5V supply stabilizes.
Bias Supplies
DC Output Ratings: (25°C ± 5)
No Load to Full Load 104V to 127V line.
+ 5 V ± 3% at 100mA
+15 V ± 3% at 75mA
-15V ± 4% at75mA
Short Circuit Output Current:
+5V
+ 15V
-15V
125mA ± 6%
103mA ± 6%
103mA ± 6%
PARD (Typical):
+ 5V
+ 15V
-15V
25mV pk-pk
Same
Same
1.5mV Rms
Same
Same
Isolation:
Status Indicator lines and Remote Control lines may be floated a maximum of 240Vdc (6010A, 250Vdc, 6011A, 6012B)
from ground from the power supply or from each other. These lines may not be connected to any primary circuits.
Jumpers Designation
W1--jumpered:
OV indication @ A7J3-17 is active (lo) if OVP; Remote Trip or Remote Inhibit is
active.
W1--open:
OV indication is active (lo) if OVP or Remote Trip is active.
Normal operation as shipped:
W3 and W4 jumpered W2 and W5 open.
OVP Programmable (6011A)
A7J3-25/CV: W2 jumpered; W3 open or
AJ3-24/CC: W5 jumpered; W4 open
S1A,B in open position.
92
Installation
When installing the board, perform the following steps:
a. Remove the top and inner cover of the power supply as discussed in Section 3 under Repair and Replacement.
b. Remove the plate next to the barrier strip on the rear panel of the supply by unscrewing the 2 M3 screws.
c. Insert the already prepared 002 board in the slot closest to the right side (looking from the front panel) of the supply.
d. Use the two M3 screws to connect the rear end of the 002 board to the rear panel of the supply.
e. Attach ribbon cables from the A2 Control Board A2J 1 to A7J1 and A2J2 to A7J2.
f. Replace the inner and outer cover of the supply.
g. Remove 550V label from rear of unit.
Connector Assembly Procedure
The following instructions describe assembly of the mating connector provided to interface the user's system with the
option connector, J3. Figure A-1 identifies the parts of the mating connector.
Proceed as follows:
Note:
It may be desirable to set up a test interface before final assembly of the mating connector to allow
checkout of the system. A mating connector with pins accessible for temporary wiring is available from
Agilent Technologies, Agilent part number 1251-4464.
If the cable assembly presents RFI or ESD problems, a shielded cable assembly accessory Agilent part
number 5060-2890 can be ordered.
a.
If a multi-wire cable is being used as opposed to individual wires), remove approximately 1 1/2 inches of cable
insulation from the end. Be careful not to cut the insulation on the individual wires.
b.
Strip 3/16 inch of insulation from the end of each wire to be used.
c.
Insert each wire into a contact pin (1) and crimp firmly.
d.
Insert each pin into a proper hole in connector-pin house (2) from rear. Pins will lock into housing when fully inserted.
Note
Once the pins are locked into the connector-pin housing, they are extremely difficult to remove.
Therefore, be certain pin is in proper hole before inserting fully.
e.
Screw a slotted setscrew (3) partially into a square nut (4) and place in position in connector shield assembly (6).
f.
Place strain relief (5) in position in connector shield assembly (6), just under set screw (3). Be certain that strain relief
is oriented as shown in Figure A-1.
g.
Place connector pin housing (2) in shield assembly (6) and route cable through cable entrance.
h.
Fold connector assembly (6) and secure with three screws.
i.
Strain relief set screw (3) can now be adjusted from top of connector to clamp firmly on cable.
j.
Clip fasteners (7) onto ends of connector pin housing (2).
k.
Connector can now be plugged onto option connector J3 and secured with two screws (8) into the threaded stand-offs
on either side of J3.
93
Figure A-1. Mating Connector Assembly
Operation
The following paragraphs provide the operating instructions necessary to interface a 002-equipped power supply into an
automated system. A brief description of some circuits is also provided. The unit is shipped for front panel operation with
mode switch settings as follows:
B1
B2
B3
0
1
1
B4
0
B5
B6
1
1
Before beginning, switch the power supply's rear panel MODE switches B1 through B6 to their correct positions for the
programming source being used, (see Table A-2).
Next switch A1 and A2 also on the rear panel, to the correct program source function, see Figure A-2. All connections are
made at the 37-pin rear panel connector J3, and can be wired directly into the mating connector supplied for this purpose.
94
Figure A-2. 002 Option Rear Panel Connector J3 and Switches A1 and A2.
Local/Remote Programming
When switching to local/ control, remember to set Front Panel Voltage and Current Control to safe levels.
Local Programming (Figure A-3). The supply can be switched back and forth between remote and local programming
while initially checking out a remote programming circuit. For proper operation of local programming, the user must
supply the bias voltage (CONTROL ISOLATOR BIAS). The Control Isolator Bias voltage can range from +4.75V to
+ 16V depending upon the user's interface circuits. Refer to Specifications Table A-1. For local programming, take the
Control Isolator Bias common and connect it to both of the LOC/REM terminals, and position mode switch as indicated in
Operation.
Although CONTROL ISOLATOR BIAS can be + 4.75V to + 16V, a supply voltage of more than 7V
may damage the relays. Therefore, if CONTROL ISOLATOR BIAS exceeds 7V it is necessary to use a
resistor in series with each of the LOC/REM terminals. Figure A-4 provides a graph from which the
proper series resistance value can be determined. Note that the tolerances of both the Control Isolator
Bias and the resistor must be taken into account. The actual Control Bias used in Figure A-4 is obtained
after subtracting any driver gate voltage drop.
95
Figure A-3. Accessing Local Programming while in Remote Programming Mode
If solid state circuitry is used, connect the Control Isolator Bias to a driver capable of sinking 10mA of current, then
connect the driver's output to both of the LOC/REM terminals. Refer to Figure A-3. Either method will enable relays K1
(CV) and K2 (CC) to switch regulation to the front panel VOLTAGE and CURRENT controls. For Control Isolator Bias
voltages greater than 7V, a resistor (Ropt) must be used in series with the Control Isolator Bias common or the Driver's
output. Figure A-4 provides a graph for determining the proper series resistance value depending on the Control Isolator
Bias voltage being used.
The supply can be returned to the remote programming mode by switching off the Control Isolator Bias common or by
increasing the Driver's output signal to within 1V of the Control Isolator Bias voltage. If remote programming is solely
desired, leave the LOC/REM terminals open and make the proper connections to the RESISTOR/VOLTAGE PROG. or
CURRENT PROG. terminals (see Figures A-5, A-6, A-7).
Table A-2. Mode Switch settings for enabling different Programming Sources
Program Source
Resistance
Voltage or
Current
96
Switch Pole Settings
Mode
B1
B2
B3
B4
B5
0
0
1
0
0
0
1
0
0
1
B6
1
0
Figure A-4. Calculating Value of Series Dropping Resistor
Remote Resistance Programming
Check switches A1 and A2 on the rear panel, they must be in their correct positions for CV and CC resistance/voltage
programming (see Figure A-2). A resistance variable from 0 to 4K ohms can be used to program the output voltage or
current from 0 to full scale. To program the output voltage, connect the variable resistance between J3-25 (CV RES/VOLT
PROG.) and J3-22 (E COM.). To program the output current, connect the variable resistance from J3-24 (CC RES/VOLT
PROG.) to J3-22 (E COM.).
If the programming lines become open circuited during resistance programming (user’s system becomes
disconnected from J3), the power supply's output will tend to rise above rating. The supply will not be
damaged if this occurs, but the user's load may be damaged. To protect the load, be sure that the
overvoltage trip point is properly adjusted. The unit includes clamp circuits to prevent it from supplying
more than about 120% of rated output voltage or current when the remote programming voltage is
greater than 5Vdc or remote programming resistance is greater than 4K ohm. Do not intentionally
operate the unit above 100% rated output. Limit your programming voltage to 5Vdc and programming
resistance to 4K ohm to assure reliable operation.
Remote Voltage Programming (Figure A-6). Check switches Al and A2 on the rear panel, they must be in the correct
positions for CV and CC resistance/ voltage programming (see Figure A-2). A voltage source variable from 0 to 5 volts,
can be used to program the output voltage or current from 0 to full scale. The load on the programming source is less than
1mA. To program voltage, the voltage source should be connected from J3-25 (CV RES & VOLT PROG) to J3-22 (E
COM). To program current, the voltage source should be connected from J3-24 (CC RES & VOLT PROG) to J3-22 (E.
COMMON). If the programming lines become open circuited (user's system becomes disconnected from J3) during voltage
programming, the Programming Protection circuit will reduce the power supply output to zero.
97
Figure A-5. Remote Resistance Programming
Figure A-6. Voltage Programming of Output Voltage and Current
98
Current Programming (Figure A-7). Check switches A1 and A2 on the rear panel, they must be in the correct positions
for CV and CC current programming (see Figure A-2). A current sink variable from 0 to 2mA, can be used to program the
output voltage or current from 0 to full scale (see Figure A-7). The following paragraph provides a brief circuit description,
refer to schematic diagram.
Figure A-7. Current Programming of Output Voltage and Current
To program voltage, the current sink can be connected from J3-21 (CV CURRENT PROG) to J3-20 ( -15V). To program
current, the current sink can be connected from J3-2 (CC CURRENT PROG) to J3-20 ( -15V). Current sinks can either be
connected to the power supply ( -15 V) or to an external negative supply that is referenced to the L. COMMON of the
power supply.
The 0 to 2mA current sink will cause the output signal of op-amps U17 and U18 to vary proportionally from 0 to 5 volts.
These signals are then coupled through relays K1 and K2 and then on to the A2 Board's CV and CC circuits which, in-turn,
will program the supply's output from 0 to full scale. If the programming lines become open circuited (user's system
becomes disconnected from J3) during current programming, the Programming Protection circuit will bring the power
supply output to zero.
Remote Monitoring
The 002 Option board provides a protected 0 to 5V output corresponding to a full scale voltage output. The voltage monitor
output is available between pins J3-5 (V. Monitor) and J3-1 (D COMMON).
Observe the caution described in Local Programming (Figure A-3) paragraph, page 96.
99
Output impedance is l0K ohm: the monitoring device input impedance should be at least 1M ohm to limit error to 1% +
basic accuracy; 10M ohm to limit error to 0.1% + basic accuracy.
The I. MON signal from the mainframe is also brought out through the 002 Option board. A 0 to full scale current-monitor
output is available between pins J3-3 (I. MON) and J3-1 (D COMMON). Output impedance is l0K ohms: the monitoring
device input impedance should be at least 1M ohm to limit error to 1% + basic accuracy.
In some applications it may be desirable to install a noise-suppression capacitor on these monitor outputs to lessen the
effects of noise induced in the monitor leads. The capacitors should be ceramic or tantalum type, from 0.1 to 1µF. The
capacitor is installed directly across the monitor device input terminals .
Status Indicators
Six optically isolated lines provide open collector digital outputs which indicate certain modes and conditions of power
supply operation. For proper supply operation of the opto-isolators, the user must supply the bias voltage, (ISOLATOR
BIAS). This voltage can be from +4.75 V to + 16V depending upon the user's interface circuits, refer to the specifications
Table A-1. Connect the bias voltage ( + ) between J3-37, (ISOLATOR BIAS) and J3-34 (ISOLATOR COMMON). The
status indicator outputs are open collector (referenced to ISOLATOR common); therefore, it is necessary to connect a
pull-up resistor from each output to ISOLATOR BIAS. When choosing the resistor value observe the current sink
capabilities of these lines as described in the Specifications Table A-1.
Because of the relatively slow rise and fall times of opto-isolators, Schmitt-triggered devices should be used to interface
these output lines to logic circuits.
The following signals are in active low-form:
a. CV MODE , J3-36, indicates that the power supply is in constant voltage operation.
b.
CC MODE , J3-35, indicates that the power supply is in constant current operation.
c.
OUTPUT UNREGULATED , J3-18, indicates that the power supply is in neither constant voltage nor constant
current operation and cannot be guaranteed to meet specifications.
OVERVOLTAGE , J3-17, Indicates power supply shutdown because of: the voltage output exceeding the OV trip
point set at the front panel; or, a system-initiated shutdown as described in multiple supply system shutdown section,
page 103.
OVERTEMPERATURE , J3-16, indicates power supply shutdown due to an excessive temperature rise on the FET or
output diode heatsink.
d.
e.
The Low Bias AC DROPOUT signal, J3-19, is in active high form. This signal indicates: loss of primary power,
momentary AC dropout. or "brownout'' conditions where the AC line voltage drops below approximately 70% nominal.
Remote Control
For operation of the opto-isolators. the user must supply the bias voltage (CONTROL ISOLATOR BIAS). This voltage
can be from + 4.75V to + 16V depending on the requirements of the driving circuits. The type of driving logic and bias
voltage will determine the amplitude of the high and low logic levels, refer to the Specification Table A-1 under Remote
Control.
Connect the bias voltage ( + ) to J3-10 CONTROL ISOLATOR BIAS, and reference the input signals to this bias supply's
negative terminal.
Two optically isolated methods of remote control are available. They are described in the following paragraphs.
100
Remote Trip. A negative-going edge applied to terminal J3-30 ( REMOTE TRIP ) will shut down the power supply,
reducing the output voltage to near zero. For minimum pulse duration and timing considerations with respect
to REMOTE RESET , see Table A-1. The following paragraph provides a brief circuit description (see schematic diagram
and Figure A-8).
A negative going edge at REMOTE TRIP coupled through opto-isolator (U9) causes one-shot U13B to set the
TRIP/RESET latch (U5A) low. This sets terminal J1-13 ( INHIBIT ) low, thus inhibiting the Pulse Width Modulator of the
power supply. It also lights the unregulated indicator on the front panel and generates an unregulated signal from the
opto-isolator U3.
The low signal generated by the Trip/Reset Latch is also coupled through opto-isolator U2 and appears at J3-17 as an
OVERVOLTAGE status signal. This signal does not affect the state of the power supply's OVP circuit.
Remote Reset. A negative-going edge applied to terminal J3-29 ( REMOTE RESET ) will return the supply to its initial
state following a system-initiated shutdown or an OVP shutdown caused by a temporary over voltage condition. For
minimum pulse duration and timing considerations with respect to REMOTE TRIP see Table A-1 under Remote Control.
The following paragraphs provide a brief description of this circuit (see schematic diagram and Figure A-8).
A negative-going pulse applied to terminal J3-29 ( REMOTE RESET ) is coupled through opto-isolator U10. One-Shot
U13A then triggers and resets the TRIP/RESET latch output high. This sets terminal J1-13 ( INHIBIT ) high, thus enabling
the power supply's Pulse Width Modulator.
The REMOTE RESET signal will also reset the power supply OVP circuit in the event that an overvoltage condition has
shut down the supply. When a REMOTE RESET signal is present, ONE SHOT U13A goes low, this will produce an OV
CLEAR pulse at terminal J1-12. The OV CLEAR pulse will cause the output of A2U2 to go low thus, resetting the OV
FLIP FLOP. When this occurs the output of A2U24D goes high and simultaneously causes the front panel OV LED to turn
off and the OV signal (J1-6) to go high. The OVERVOLTAGE signal to U4B also goes high and enables the PWM of the
power supply .
Note
By observing the OVERVOLTAGE status indicator or the power supply's output while applying a reset
pulse to REMOTE RESET , the user can determine the cause of shutdown. If the output returns and
OVERVOLTAGE goes high immediately, this indicates a controller-initiated shutdown. If the output
takes about one second to return, this indicates that the output voltage had exceeded the OVP trip point. If
the OVP circuit trips continually, check the load and/or the trip point setting.
Alternate Method of Remote Control. The REMOTE INHIBIT input, J3-31, provides an alternate method of remote
shutdown. By maintaining a low logic level at this input, the supply's output will be inhibited until REMOTE INHIBIT is
returned to its initial high state. The following paragraph provides a brief description of this circuit (see schematic diagram
and Figure A-8).
A low logic level applied to terminal J3-31 ( REMOTE INHIBIT ) is coupled through opto-isolator U8 and causes U4B to
inhibit the power supply's (PWM) Pulse Width Modulator. If jumper W1 is used (see Figure A-8) while a
REMOTE INHIBIT signal is applied, an OVERVOLTAGE signal will appear at terminal J3-17 OVERVOLTAGE thus,
indicating the power supply shut down.
101
Figure A-8. Remote Control
Power-On Preset
This open collector output line J3-6, provides a logic low pulse ( Power - On - Preset ) to the user that can be used to
initialize or delay a system's operation until + 5 V Reg. supply has stabilized. The pulse is generated after primary power is
turned on and also after resumption of power following momentary ac dropout or conditions in which line voltage drops
below approximately 70% of the nominal. See Table A-l for Power - On - Preset signal specifications.
The Power - On - Preset circuit also ensures that terminal J3-17 ( OVERVOLTAGE ) will be high when the supply is
turned on. This protects against unwanted Multiple Supply System Shutdowns when using J3-17 ( OVERVOLTAGE ) to
remote trip additional power supplies.
The following paragraphs provide a brief description of the power-on preset circuit, refer to schematic diagram (Section 6).
Circuits on the Power Supply's A2 Control Board produce a power-clear signal, ( PCLR ), when the supply is turned on.
These circuits hold PCLR low until the unregulated input to the A2 Board's + 5Vdc bias supply is greater than about
11Vdc, an input voltage sufficient to assure + 5Vdc bias output.
This PCLR signal is coupled through terminal J1-15 to the 002 Option board's power-on preset circuit. When the power-on
preset circuit receives the PCLR signal, transistors U14A and U14C turn off.
Turning U14A off causes a DROPOUT signal to appear at terminal J3-19 ( DROPOUT ). Turning U14C off causes U14B
and U14D to turn on. When U14B is on, it holds output J3-17 ( OVERVOLTAGE ) high. Holding J3-17 high will
prevents any unwanted Multiple Supply Shutdown's from occurring when the supply is wired for such an application. When
102
U10D is on, it causes J3-6 ( Power - On - Preset ) to be low thus, if used, can initialize or delay a customer's system
operation.
AC Dropout Buffer Circuit
This circuit couples, inverts and isolates the DROPOUT signal (received from the A2 Control Board) of status output
terminal J3-19 ( DROPOUT ). The dropout signal indicates loss of primary power, momentary AC dropout, or "brownout"
conditions where the AC line voltage drops below approximately 70% normal. The following paragraph provides a brief
description of the AC Dropout Buffer circuit. Refer to the Schematic Diagram
The AC Dropout Buffer Circuit receives a DROPOUT signal from the A2 Control Board. This causes the bias voltage
supplied to the Dropout Buffer U14A to be pulled down through diode CR4 thus, turning U14A off. This in turn will cause
opto-isolator U3 to turn off. Since external pull up resistors are used, terminal J3-19 (DROPOUT) will go high and remain
high until the dropout signal from the A2 Control Board is removed.
Multiple Supply System Shutdown
When using more than one 002 Option equipped power supply in a system, it may be desirable to implement a system
shutdown. In this configuration, an OVP trip or remote shutdown of a single unit will cause all of the supplies to shut down.
Figure A-9. System Shutdown using Controller Power Supply
Figure A-9 shows one method of system shutdown. The advantages of this method are that one common is used for all
status and control lines (useful for controller-operated systems), and the capability of system reset. As shown in Figure A-9,
one supply's OVERVOLTAGE line is connected to the next supply's REMOTE TRIP line, and so on in a continuous
chain.
Note
+5V REG/POWER SUPPLY common from Supply 1 can be used instead of the bias voltage from the
controller. However, because of current limits of the + 5V REG, no more than four units can be
connected together in this configuration. To prevent ground loops, do not parallel connect + 5V REG
from more than one supply.
The note on page 101 tells how to determine if a shutdown was initiated through the remote trip line or by a supply's OVP.
103
This allows the controller to determine which supply initiated the shutdown. Following a multiple supply shutdown, each unit
can be reset individually or all the REMOTE RESET lines can be tied together for a system reset.
If it is necessary to have all the supplies come up simultaneously after a system shutdown, follow this procedure:
a.
First bring the REMOTE INHIBIT line low.
b.
Provide a negative-going pulse to the REMOTE RESET .
c.
After at least one second, return REMOTE INHIBIT to a high level.
Figure A-10. System Shutdown Using Bias Supply Output
Figure A-10 shows a second method of system shutdown. This method is appropriate in systems which are not
controller-operated and in which more than four supplies must be shutdown simultaneously. Because each supply derives
its CONTROL ISOLATOR BIAS from the previous supply's + 5V REG, there is no limit to the number of supplies that can
be shutdown. Each supply must be reset individually.
Using either method of system shutdown, PCLR inhibits the OVERVOLTAGE indicator from going low and shutting
down succeeding supplies upon initial sum-on. After the supplies have stabilized, PCLR returns to a high state.
Bias Supplies
The outputs of three current-limited bias supplies are available for user-supplied circuitry. These are + 15V @ 75mA at
J3-4, -15V @ 75mA at J3-20, and +5 V @ 100mA at J3-23; all with respect to J3-7, L Common.
It may be desirable to install noise-suppression capacitors on the bias supply outputs near the load circuits. The capacitors
should be ceramic or tantalum type, approximately 0.1µF to 10µF.
Maintenance
The following paragraphs provide procedures and setups to aid in checking and troubleshooting the 002 Option Board. This
information, used in conjunction with the schematic drawing and the Operation section of this Appendix, will help in the
isolation and repair of faulty circuits.
When testing the option, use of the test connector on page 95 will allow easier access to the J3 contacts.
104
Troubleshooting
Before attempting to troubleshoot the 002 Option Board, ensure that the fault is with the option itself and not with the main
power supply. This can be accomplished by removing the top cover, inside cover and disconnecting the two ribbon cables
from the A2 Control board and checking the operation of the main supply. Otherwise troubleshoot the option board as
described in the following paragraphs.
Removal of the Option Board. To facilitate troubleshooting the 002 Option the board can be removed from the power
supply and electrically connected via the ribbon cables from Service Kit's 06033-60005 or 5060-2665. To remove the
circuit board proceed as follows:
a.
Turn off power supply and disconnect line cord.
b.
Disconnect option I/O cable from J3 on rear panel and remove the two screws that secure option board to rear panel.
c.
Disconnect the ribbon cables from the A2 Control board.
d.
Remove option board by lifting the board by the front edge and sliding the board toward the front of the power supply.
e.
Reconnect the option board to the A2 Control board using the extended ribbon cables from the Service Kit, and pace
the option board on an insulated surface next to the power supply.
f.
Be careful that the option board lies securely on insulating material and does not touch any part of the main power
supply.
Isolating Faulty Circuit. If it is apparent which function is not operating properly, proceed to the appropriate paragraph. If
the problem involves more than one function, check the bias voltages from connectors J1 and J2 and the ± 11.8V on the
option board.
Troubleshooting Resistance and Voltage Programming
a.
Confirm that the problem is on the option board by disconnecting the ribbon cables from the A2 Control Board and
attempting to program the supply via the rear panel terminal strip.
b.
Check ± 15V and ± 11.8V supplies.
c.
Check for a problem in the programming protection circuit. This circuit should draw about 2µA from the programming
lines.
d.
Check that W3 and W4 are installed and S1 is in proper position .
Troubleshooting Current Programming
a.
Check ± 15V and ± 11.8V supplies.
b.
Proceed to test set-up shown in Figure A-11 and/or A-12.
c.
Put S1 in V, R position and see if varying the 0-20V voltage source produces a 0-5 volt DC level across R44 or R39. If
not, check op-amps and associated circuitry.
d.
Put S1 in I position and see if varying voltage source from 0 to 20 volts produces a 0-5VDC level at W3 or W4. If not
check relay and programming protection circuit.
105
Figure A-11. Troubleshooting Current Programming of CV Mode
Figure A-12. Troubleshooting Current Programming of CC Mode
Troubleshooting Status Indicators. The test set-up shown in Figure A-13 can be used to check each of the six status
indicators. This set-up will temporarily defeat the isolation of the status lines. Before attempting to troubleshoot a status
indicator, check for + 5V Bias for proper operation of the opto-couplers.
106
Figure A-13. Troubleshooting Status Indicators
To check CV Mode proceed as follows:
a. Using test set-up, Figure A-13, connect to end of 2KΩ resistor to J3-36.
b. Turn on power supply.
c. Using "Display Setting'' set voltage and current or power supply for 1 volt and 1 amp.
d. DVM should read between 0 to 0.4 volts.
e. Turn off power supply and short to output terminals.
f. Turn on power supply.
g. DVM should read approximately 5Vdc.
To check CC Mode proceed as follows:
a. Using test set-up, Figure A-13, connect top end of 2KΩ resistor to J3-35.
b. Turn on power supply.
c. Using "Display Settings'' set voltage for 1 volt and current for 1 Amp.
d. DVM should read = 5Vdc.
e. Turn off power supply and short the output terminals.
f. Turn on power supply.
g. DVM should read between 0 to 0.4Vdc.
To check OVERVOLTAGE proceed as follows:
a. Using test set-up, Figure A-13, connect top end of 2KΩ resistor to J3-17.
b. Turn "OVP Adjust" fully clockwise and voltage control fully counter clockwise.
c. Open power supply output terminals and turn on power.
d. DVM should read approximately 5Vdc.
e. Press 'Display Settings" and increase voltage control for 15Vdc output.
f. Turn OVP Adjust'' counterclockwise until supply goes into overvoltage.
g. DVM should read between 0 and 0.4Vdc.
h. Turn "OVP Adjust" fully clockwise and turn off input power for 5 seconds.
i. Turn on input power and DVM should read approximately 5Vdc.
To check OUTPUT UNREGULATED proceed as follows:
a. Using test set-up, Figure A-13, connect to end of 2KΩ to J3-18.
b. Connect output terminals of power supply to an electronic load capable of exceed the power supplies output power
rating by 50%.
107
c.
d.
e.
f.
a.
Turn on power supply.
DVM should read approximately 5Vdc.
Set voltage and current controls of power supply to maximum.
Decrease resistance of electronic load until "UNREGULATED" LED on front panel lights.
DVM should now read between 0 to 0.4Vdc.
To check LOW BIAS or AC Dropout proceed as follows:
a. Using test set-up, Figure A-13, connect top end of 2KΩ resistor to J3-19.
b. Substitute an oscilloscope in place of DVM. Set vertical deflection for 1 volt/div on the DC input.
c. Turn power on and observe oscilloscope trace. Voltage should increase to 5V at power-on and drop to between 0 to
0.4Vac approximately 3 sec.
d. Turn power off. Voltage should go to about 5Vdc before decaying back to 0V.
Note
In this test, the Low BIAS or AC Dropout signal decays to 0V only because of loss of power to the + 5V
REG Bias Supply used in the test set-up. If in doubt, use an external + 5V supply for this test.
To check OVERTEMPERATURE proceed as follows:
a. Turn off power supply and disconnect line cord.
b. Wait at least two minutes for input capacitors to discharge .
c. Remove top cover and inside cover.
d. Using test set-up, Figure A-13, connect top end of 2KΩ resistor to J3-16.
e. Turn on power supply.
f. DVM should read approximately 5Vdc.
g. Turn off power and wait two minutes.
h. Remove the A4 FET Assembly from the unit.
i. Turn on power supply. DVM should read between 0 to 0.4Vdc.
Note
The FET heatsinks are connected to the primary circuit and hazardous voltage (up to between 300 to
400V) exists between the heatsinks and the heatsink and the chassis. These potentials remain for up to 2
minutes if the power supply is turned off. Do not touch the heatsinks or any components on the heatsink
assemblies while the power supply is turned on or for at least two minutes after primary power is
removed. Do not place any of the heatsink assemblies on extender boards.
Troubleshooting Remote Shutdown. The following procedures check the Remote Shutdown features of 002 Option.
Troubleshooting can be accomplished by using a logic probe and referring to the schematic and the circuit description on
page 104. Before attempting to troubleshoot the Remote Shutdown section of the option, check for + 5Vdc internal bias.
This voltage must be present for proper operation of these circuits
To check the REMOTE TRIP and REMOTE RESET proceed as follows:
a. Connect +5V (J3-23) to Control Isolator bias (J3-l0).
b. Turn unit on and short REMOTE TRIP (J3-30) to + 5V common (J3-7) momentarily. Output should go into
unregulated condition with output off.
c. Short REMOTE RESET (J3-29) to + 5V common (J3-7) momentarily and OUTPUT should return to its initial state.
To check REMOTE INHIBIT proceed as follows:
a. Table A-3. Replacement Connect +5V (J3-23) to control isolator bias (J3-10).
b. Turn unit on and short REMOTE INHIBIT (J3-31 ) to + 5V common (J3-7). Output should go to an unregulated
output off condition.
c. Remove short between REMOTE INHIBIT (J3-31 ) and + 5V common (J3-7) and output should return to its initial
state.
108
Table A-3. Replacement Parts
REF. DESIG.
A7
C1,2
C3
C4
C5
C6
C7
C8,9
C10
C11
C12,13
C14
C15
C16
C17,18
C19
C20-22
C20-22
CR1-4
CR5-10
CR11-14
CR15
CR16,17
CR18,19
CR20
CR21,22
CR23
CR24,25
CR26-29
CR30
K1,2
L1-3
Q1,2
R1-3
R4
R5
R6
R7
R8,9
R10
R11
R12
R13
R14
R15,16
R17
R18
R19
R20,21
MODEL NO,
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
6010
6011A, 6012B
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
PART NO.
5060-2854
0180-0230
0180-2825
0160-4835
0160-4554
0160-4835
0160-4554
0180-0230
0180-2825
0160-4801
0160-5422
0160-4801
0160-5422
0160-5422
0180-0230
0180-2825
0160-0128
0160-0122
1901-0050
1901-0327
1901-0033
1901-0327
1901-0050
1901-0033
1901-0050
1901-0033
1901-0050
1901-0033
1901-0327
0490-1418
9170-1223
1854-0823
0683-2015
0683-3925
0683-2035
0683-3035
0683-6225
0683-2035
0683-1035
0683-5125
0757-0984
0683-1615
0683-4715
0683-1235
0686-1525
0683-1535
0683-4715
0683-1235
DESCRIPTION
Opt. 002 Interface Board
fxd elect. 1µF 20% 50V
fxd elect. 22µF 50V
fxd cer. 0.1µF 10% 50V
fxd cer. 0.0µF 20% 50V
fxd cer. 0.1µF l0% 50V
fxd cer. 0.0µF 20% 50V
fxd elect. 1µF 20% 50V
fxd elect. 22µF 50V
fxd cer. 100pf 5% l00V
fxd cer. 0.047µF 20% 50V
fxd cer. 100pfF 5% l00V
fxd cer. 0.047µF 20% 50V
fxd cer. 0.047µF 20% 50V
fxd elect. 1µF 20% 50V
fxd elect. 22µF 50V
fxd cer. 2.2µF 20% 50V
fxd cer. 2.2µF 20% 50V
switching 80V 200ma
pwr. rect. 300V 40A
gen. prp. 180V 200ma
zener 9.09V 10% PD=1.5W
NOT USED
switching 80V 200ma
gen. prp. 180V 200ma
switching 80V 200ma
gen. prp. 180V 200ma
switching 80V 200ma
gen. prp. 180V 200ma
zener 9.09V 10% PD=1.5W
relay 250ma 28V,5V –coil 3VA
core shielding bead
NPN SI PD=300mW FT=200MHZ
fxd. film 200 5% 1/4W
fxd. film 3.9K 5% 1/4W
fxd. film 20K 5% 1/4W
fxd. film 30K 5% 1/4W
fxd. film 6.2K 5% 1/4W
fxd. film 20K 5% 1/4W
fxd. film 10K 5% 1/4W
fxd. film 5.1K 5% 1/4W
fxd. film 10 1% 1/2W
fxd. film 160 5% 1/4W
fxd. film 410 5% 1/4W
fxd. film 12K 5% 1/4W
fxd. film 1.5K 5% 1/4W
fxd. film 15K 5% 1/4W
fxd. film 470 5% 1/4W
fxd. film 12K 5% 1/4W
109
Table A-3. Replacement Parts
REF. DESIG.
R22
R23
R24
R25,26
R27
R28
R29,30
R31
R32
R33
R34
R35
R36
R37
R38
R39
R40
R41
R42
R43
R44
R45
R46
R47
R48
R49
R50,51
R52,53
R54
R55
R56
R57
S1
U1-3
U4
U5
U6
U6
U7
U7
U8-10
U11
U12
U13
U14
U15
U15
U16
U16
U17,18
110
MODEL NO,
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
6010A, 6011A
6012B
6010A, 6011A
6012B
All
All
All
All
All
6010A, 6011A
6012B
6010A, 6011A
6012B
All
PART NO.
0686-1525
0683-1535
0683-4715
0683-1235
0686-1525
0683-1535
0698-4479
0686-5125
0683-5125
0686-5125
0683-5125
0757-0986
0757-0269
0683-4715
0683-1035
0698-6631
0683-4715
0813-0001
0683-4715
0683-l035
0698-6631
0683-4715
0813-0001
0683-1525
0683-3325
0683-2225
0683-3355
0683-1055
0757-0441
0757-0986
0757-0269
0698-3226
3101-2715
1990-0732
1820-1197
1820-1202
5060-2942
1826-0393
5060-2945
1826-0551
1990-0494
1820-1491
1820-1416
1820-l437
1858-0023
5060-2943
1826-0527
5060-2950
1826-0277
1826-0493
DESCRIPTION
fxd. film 1.5K 5% 1/4W
fxd. film 15K 5% 1/4W
fxd. film 470 5% 1/4W
fxd. film 12K 5% 1/4W
fxd. film 1.5K 5% 1/4W
fxd. film 15K 5% 1/4W
fxd. film 14K 1% 1/8W
fxd. comp. 5.lK 5% 1/2W
fxd. film 5.1K 5% 1/4W
fxd. comp. 5.1K 5% 1/4W
fxd. film 5.1K 5% 1/4W
fxd. film 12.1K 1% 1/2W
fxd. film 270 1% 1/8W
fxd. film 470 5% 1/4W
fxd. film 10K 5% 1/4W
fxd. film 2.5K .1% 1/8W
fxd. film 470 5% 1/4W
fxd. ww. 1K 5% 3W
fxd. film 470 5% 1/4W
fxd. film 10K 5% 1/4W
fxd. film 2.5K .1% 1/8W
fxd. film 470 5% 1/4W
fxd. ww. 1K 5% 3W
fxd. film 1.5K 5% 1/4W
fxd. film 3.3K 5% 1/4W
fxd. film 2.2K 5% 1/4W
fxd. film 3.3M 5% 1/4W
fxd. film 1M 5% 1/4W
fxd. film 8.25K 1% 1/8W
fxd. film 12.lK 1% 1/2W
fxd. film 270 1% 1/8W
fxd film 6.49K 1% 1/8W
Switch-Slide 2-lA .1A 50V
Opto-Isolator IF=20mA max.
IC NAND gate TTL LS quad
IC NAND gate TTL LS
IC Voltage Reg. heatsink assy.
IC Voltage Reg.
IC Voltage Reg. heat sink assy.
IC Voltage Reg.
Opto-Isolator IF=20mA max.
IC Buffer TTL LS, hex
IC Schmitt-Trig. TTL LS, hex
IC Multi. Vib. TTL LS
Trans. Array 16-pin
IC Voltage Reg. heatsink assy.
IC Voltage Reg.
IC Voltage Reg. heatsink assy.
IC Voltage Reg.
IC Op Amp Low-bias-High-Impd.
Table A-3. Replacement Parts
REF. DESIG.
U19
U19
U20
U20
VR1-8
VR9
VR10
VR11
VR12
VR13
VR14
VR15
VR16
VR17
Z1
MODEL NO,
6010A, 6011A
6012B
6010A, 6011A
6012B
All
All
All
All
All
All
All
All
All
All
All
PART NO.
5060-2942
1826-0393
5060-2946
1826-0607
1902-0556
1902-3185
1902-0556
1902-3256
1902-0779
1902-3180
1902-3110
1902-0575
1902-0556
1902-3256
1810-0276
DESCRIPTION
IC Voltage Reg. heatsink assy.
IC Voltage Reg.
IC Voltage Reg. heatsink assy.
IC Voltage Reg.
zener 20V 5% PD=1W IR=5µA
zener 12.4V 5% PD=.4W
zener 20V 5% PD=1W IR=5µA
zener 23.7V 5% PD=.4W
zener 11.8V 5% PD=.4W
zener 11.8V 2% PD=.4W
zener 5.9V 2% PD=.4W
zener 6.5V 2% PD=.4W
zener 20V 5% PD=.4W IR=5µA
zener 23.7V 5% PD=.4W
network res. 1.5K x 9
Mechanical
A7J3
W1
W2
W3,4
W5,6
All
All
6010A
All
All
All
All
All
All
06023-00025
1251-6075
1205-0282
1258-0189
NOT USED
7175-0057
8120-4356
1251-8417
0360-1300
plate (ref. A7J3)
connector 37-pin
heatsink (ref. U6, 7, 15, 16, 19, 20)
jumper
jumper, solid tinned copper
ribbon cable, 16 cond.
post type header (ref. J1, J2)
solder pin
111
Logic Symbols and Definitions
High = more positive
Low = less positive
Indicator and Qualifier Symbols
OR function
Polarity indicator, shown outside logic symbol. Any marked input or output is active low; any unmarked
input or output is active high.
(Dynamic indicator) Any market input is edge-triggered, ie, active during transition between states. Any
unmarked input is level sensitive.
(Schmitt trigger) indicates that hysteresis exists in device.
(Non-logic indicator) Any marked input or output does not carry logic information.
Open-collector or open emitter output.
t = xSec
G
C
Monostable (one-shot) multivibrator.
Indicates pulse width usually determined by external RC network.
Gate input (a number following G indicates which inputs are gated).
Control input (clock).
R
S
Reset (clear).
Set.
OLD SYMBOL
NEW SYMBOL
NOTES
Output requires external components to achieve logic state.
A positive-going transition at A or a negative-going transition at B
triggers the one-shot. External timing components connect to
non-logic inputs.
Output changes state rapidly regardless of input rate of change.
112
SCHEMATIC DIAGRAM NOTES
1.
ALL RESISTORS ARE IN OHMS, ± 5%, 1/4W, UNLESS OTHERWISE INDICATED.
2.
ALL CAPACITORS ARE IN MICROFARADS, UNLESS OTHERWISE INDICATED.
3.
WHITE SILKSCREENED DOTS ON P. C. BOARDS INDICATE ONE OF THE FOLLOWING.
A. PIN 1 OF AN I. C. (EXCEPT FOR U18 SEE NOTE 4 ).
B. POSITIVE END OF A POLARIZED CAPACITOR.
C. CATHODE OF A DIODE OR THE EMITTER OF A TRANSISTOR.
4.
PIN LOCATIONS FOR SEMICONDUCTORS ARE SHOWN BELOW:
5.
ON VOLTAGE REGULATOR DEVICES:
REF SUPPLY BIAS FOR REGULATORS INTERNAL REFERENCE.
REF = OUTPUT FROM REGULATORS INTERNAL REFERENCE.
BOOST OUTPUT = CONTROL FOR EXTERNAL PASS TRANSISTOR.
CS = CURRENT SENSE.
CL = CURRENT LIMIT.
INV = INVERTING INPUT TO REGULATORS ERROR AMPLIFIER.
NI = NON-INVERTING INPUT TO REGULATORS ERROR AMPLIFIER.
COMP = FREQUENCY COMPENSATION.
113
1.
2.
3.
4.
Schematic Notes
W1 in normally open position.
W3 & W4 jumpered.
Relays K1, K2 normally closed.
S1A and S1B are located at the rear panel.
Figure A-15. Option 002 Board, Component Location
114
Figure A-16. Option 002 Board, Schematic Diagram
115
B
Backdating
Manual backdating describes changes that must be made to this manual for power supplies whose serial numbers are
lower than those listed in the title page to this manual.
Look in the following table and locate your Agilent Model. Then look at each serial number listed for this group. If
the serial number of your power supply is prior to any of the serial number(s) listed, perform the change indicated in
the Change column. Note that several changes can apply to your supply. You may also be instructed to update your
power supply if certain components are being replaced during repair.
Model 6010A
Serial Numbers
PREFIX
NUMBER
US3711
0101-0170
3711A
01800-01929
3544A
01605-01799
3420A
01400-01604
3306A
01240-01399
3214A
01170-01239
3211A
01150-01169
3140A
01060-01149
3105A
00960-01059
3038A
00900-00959
2846A
00545-00899
2824A
00465-00544
2718A
00285-00464
2707A
00245-00268
2536A
00101-00244
116
Change
1
1
1,2
1-3
1-4
1-5
1-6
1-6
1-7
1-8
1-9
1-10
1-11
1-12
1-13
Model 6011A
Serial Numbers
PREFIX
NUMBER
US3546
0101-0155
3546A
01838-01962
3419A
01588-01837
3313A
01518-01587
3303A
01498-01517
3212A
01398-01497
3142A
01348-01397
3139A
01338-01347
3102A
01278-01337
3037A
01218-01277
2850A
00856-01217
2719A
00466-00855
2709A
00436-00465
2614A
00296-00435
2603A
00286-00295
2520A
00211-00285
2438A
00161-00210
2423A
00101-00160
Change
1
1
1,2
1-3
1-4
1-5
1-5
1-6
1-7
1-8
1-9
1-10
1-11
1-12
1-13
1-14
1-15
1-16
Model 6012B
Serial Numbers
PREFIX
NUMBER
US3543
0101-0335
3543A
04801-05360
3415A
04311-04800
3319A
04091-04310
3303A
04061-04090
3232A
03981-04060
3212A
03481-03980
3139A
03661-03840
3104A
03411-03660
3037A
03271-03410
2846A
02711-03270
2723A
01911-02710
2709A
01891-01910
2703A
01771-01890
2616A
01151-01770
2614A
01131-01150
2606A
01011-01130
2524A
00586-01010
2519A
00511-00585
2517A
00436-00510
2439A
00211-00435
2428A
00101-00210
Change
1
1
1,2
1-3
1-4
1-5
1-6
1-6
1-7
1-8
1-9
1-10
1-11
1-12
1-13
1-14
1-15
1-16
1-17
1-18
1-19
1-20
Model 6015A
Serial Numbers
PREFIX
NUMBER
US3705
0101-0145
3705A
00444-00518
3543A
00344-00443
3424A
00244-00343
3402A
00229-00243
3310A
00219-00228
3310A
00179-00218
3243A
00174-00178
3215A
00144-00173
3142A
00124-00143
3103A
00109-00123
3044A
00101-00108
Change
1
1
1,2
1-3
1-4
1-4
1-5
1-6
1-7
1-8
1-9
1-10
CHANGE 1
All
In the parts list for the A1 Main Board Assembly change R45 to 82.5K, 1% 1/8W, p/n 0757-0463.
CHANGE 2
6010A, 6015A
In the parts list for the A5 Diode Board Assembly change CR4, 5 to p/n 1901-1182. Change Q1
to p/n 1855-0486. Under A5 Mechanical change the heatsink for Q1 to p/n 1205-0398, change
heatsink for CR4 to p/n 06030-00004, change heatsink for CR5 to p/n 06030-00003.
6011A, 6012B
In the parts list for the A4 FET Board Assembly change CR1, CR4 to p/n 1901-1137.
CHANGE 3
6010A, 6015A
In the parts list for the A4 FET Board Assembly change CR1and CR4 to p/n 1901-1137.
6011A, 6012B
In the parts list for the A1 Main Board Assembly change K1 to p/n 0490-1457 and K2 to p/n
0490-1341. Change R47 and R48 to 150 5% 1W, p/n 0761-0035.
CHANGE 4
6010A, 6015A
In the parts list for the A1 Main Board Assembly change K1 to p/n 0490-1457 and K2 to p/n
0490-1341. Change R47 and R48 to 150 5% 1W, p/n 0761-0035.
6011A, 6012B
In the parts list for the A1 Main Board Assembly make the following changes:
Add:
C3, C7 1400µF, p/n 0180-3460
117
R6, 1.3K, p/n 0811-1803
U2, U4, Rectifier, p/n 1906-0006
Delete:
C27, C34, 0.01µF 400V, p/n 0160-6805
CR6-CR13, power rectifier 400V, p/n 1901-0731
R24, 200 5% 1/2W, p/n 0686-2015
R43, R44, 2.61K 1% 1/8W, p/n 0698-0085
R45, 82.5K 1% 1/8W, p/n 0757-0463
R46, 681 1% 1/8W, p/n 0757-0419
R47, R48 150 5% 1W, p/n 0761-0035
R49, 100 1% 1/8W, p/n 1902-0955
Q2, FET N-channel, p/n 1855-0665
VR1, diode zener 7.5V 5%, p/n 1902-0955
U6, opto-isolator, p/n 1990-1074
Change:
A1 board to p/n 06011-60021
C1, C2, C4-C6, C8 to p/n 0180-3460
C10 to p/n 0180-0426
DS1 to p/n 1990-0325
K1 to p/n 0490-1457
K2 to p/n 0490-1341
R5 to p/n 0686-3015
R7 to p/n 0686-1005
R8 to p/n 0686-3335
R41 to p/n 0811-1869
CR1 to p/n 1901-0028
Under AC Input Filter, change to p/n 06011-60025. Subtract 100 from all of the reference
designators. C101 thus becomes C1. Also delete W101-W103, p/n 1251-5613.
Under Chassis Electrical change L4 to p/n.06011-80093. Also add C27 0.01µF 10% 400W, p/n
0160-0381and R24 200 5% 1/2W, p/n 0686-2015.
CHANGE 5
6010A
118
In the parts list for the A1 Main Board Assembly make the following changes:
Add:
C3, C7 1400µF, p/n 0180-3460
R6, 1.3K, p/n 0811-1803
U2, U4, Rectifier, p/n 1906-0006
Delete:
C27, C34, 0.01µF 400V, p/n 0160-6805
CR6-CR13, power rectifier 400V, p/n 1901-0731
R24, 200 5% 1/2W, p/n 0686-2015
R43, R44, 2.61K 1% 1/8W, p/n 0698-0085
R45, 82.5K 1% 1/8W, p/n 0757-0463
R46, 681 1% 1/8W, p/n 0757-0419
R47, R48 150 5% 1W, p/n 0761-0035
R49, 100 1% 1/8W, p/n 1902-0955
Q2, FET N-channel, p/n 1855-0665
VR1, diode zener 7.5V 5%, p/n 1902-0955
U6, opto-isolator, p/n 1990-1074
Change:
A1 board to p/n 06030-60021
C1, C2, C4-C6, C8 to p/n 0180-3460
C10 to p/n 0180-0426
DS1 to p/n 1990-0325
K1 to p/n 0490-1457
K2 to p/n 0490-1341
R5 to p/n 0686-3015
R7 to p/n 0686-1005
R8 to p/n 0686-3335
R41 to p/n 0811-1869
CR1 to p/n 1901-0028
Under AC Input Filter, change p/n to 06011-60025 Subtract 100 from all of the reference
designators. C101 thus becomes C1. Also delete W101-W103, p/n 1251-5613.
Under Chassis Electrical change L4 to p/n 06011-80093. Also add C27 0.01µF 10% 400W, p/n
0160-0381 and R24 200 5% 1/2W, p/n 0686-2015.
6011A
In the parts list for the A1 Main Board Assembly make the following changes:
Change C23, C28 to 0.047µF, p/n 0160-5895
Add C21,C24, 0.047µF, p/n 0160-5895
Add R21, R22, 1 5% 1/4W, p/n 0699-0208
6012B
In the parts list for the A1 Main Board Assembly make the following changes:
Change C20, C22 to 0.047µF, p/n 0160-5895
Add C21,C23, 0.047µF, p/n 0160-5895
Add R20, R23, 1 5% 1/4W, p/n 0699-0208
6015A
In the parts list for the A2 Control Board Assembly change R40 to 95K 1% p/n 0699-1211 and
1.21M 1% p/n 0699-0088 assembled in parallel. Change R41 to 200K 0.1%, p/n 0699-6376.
CHANGE 6
6010A
In the Diode board A5 parts list and schematic diagram delete L3.
6011A, 6012B
In the parts list for the A1 Main Board Assembly change U1 to p/n 1906-0218.
6015A
In the parts list for the A1 Main Board Assembly make the following changes:
Add:
C3, C7 1400µF, p/n 0180-3460
R6, 1.3K, p/n 0811-1803
U2, U4, Rectifier, p/n 1906-0006
Delete:
C27, C34, 0.01µF 400V, p/n 0160-6805
CR6-CR13, power rectifier 400V, p/n 1901-0731
R24, 200 5% 1/2W, p/n 0686-2015
R43, R44, 2.61K 1% 1/8W, p/n 0698-0085
R45, 82.5K 1% 1/8W, p/n 0757-0463
R46, 681 1% 1/8W, p/n 0757-0419
R47, R48 150 5% 1W, p/n 0761-0035
R49, 100 1% 1/8W, p/n 1902-0955
Q2, FET N-channel, p/n 1855-0665
VR1, diode zener 7.5V 5%, p/n 1902-0955
U6, opto-isolator, p/n 1990-1074
Change:
A1 board to p/n 06030-60021
119
C1, C2, C4-C6, C8 to p/n 0180-3460
C10 to p/n 0180-0426
DS1 to p/n 1990-0325
K1 to p/n 0490-1457
K2 to p/n 0490-1341
R5 to p/n 0686-3015
R7 to p/n 0686-1005
R8 to p/n 0686-3335
R41 to p/n 0811-1869
CR1 to p/n 1901-0028
Under AC Input Filter, change to p/n 06011-60028. Subtract 100 from all of the reference
designators. C101 thus becomes C1. Also delete W101-W103, p/n 1251-5613.
Under Chassis Electrical change L4 to p/n 06011-80093. Also add C27 0.01µF 10% 400W, p/n
0160-0381 and R24 200 5% 1/2W, p/n 0686-2015.
CHANGE 7
6010A
In the parts list for the A1 Main Board Assembly change U1 to p/n 1906-0218. In the parts list
for the A5 Diode Board, change L1 to p/n 06011-80094.
6011A, 6012B
In the parts list for the A5 Diode Board, change L1 to p/n 06011-80094.
6015A
In the parts list for the A1 Main Board Assembly change C11, C12 to p/n 0160-6392. Change
R12, R13 to 2.2 5% 1/4W p/n 0699-0188.
CHANGE 8
6010A, 6012B
In the parts list for the A1 Main Board Assembly change T3 to p/n 5080-1982. Delete the
following mechanical attaching parts:
Screw, p/n 0515-0964
lock washer p/n 2190-0586
flat washer, p/n 3050-0893
6011A
In the parts list for the A1 Main Board Assembly delete T3 and the following mechanical
attaching parts:
Screw, p/n 0515-0964
lock washer p/n 2190-0586
flat washer, p/n 3050-0893
6015A
In the parts list for the A5 Diode Board, delete L3.
CHANGE 9
6010A, 6011A,
6012B
120
In the parts list for the Mechanical Chassis change the following parts:
From:
To:
Internal cover
06032-00024
06032-00005
Chassis
06032-00025
06032-00016
Cover-top
5001-6739
06032-00020
Cover-bottom
5001-6738
06032-00019
Cover-plate
06023-00026
06023-00010
In the option 002 replaceable parts list change cover plate from p/n 06023-00025 to p/n 0602300013. Add cover-plate p/n 06023-00010.
6015A
In the parts list for the A1 Main Board Assembly change U1 to p/n 1906-0218. In the parts list
for the A5 Diode Board, change L1 to p/n 06011-80094.
CHANGE 10
6010A, 6011A,
6012B
In the parts list for the Mechanical Chassis change the following parts:
From:
To:
Top cover
06032-00020
06032-00002
Bottom cover
06032-00019
06032-00003
Top trim
5041-8802
5040-7202
Side trim
5001-0539
5001-0439
Front frame
5021-8403
5021-5803
Feet
5041-8801
5040-7201
Strap handle
5062-3703
5060-8903
Handle ret. back 5041-8820
5041-6820
Handle ret. front 5041-8819
5041-6819
Lettered panel 06010-00009
06010-00008
6015A
In the parts list for the A1 Main Board Assembly delete T3 and the following mechanical
attaching parts:
Screw, p/n 0515-0964
lock washer p/n 2190-0586
flat washer, p/n 3050-0893
clamp, p/n 06671-400002
bracket, p/n 06671-400003
CHANGE 11
6010A
In the Diode board A5 parts list and schematic diagram delete CR6.
6011A
In the Diode board A5 parts list and schematic diagram change R17 from 2.87K 1%, p/n 06983151 to 4.87K 1%, p/n 0698-4444.
6012B
In the Diode board A5 parts list and schematic diagram change R2 from 2.87K 1%, p/n 06983151 to 4.87K 1%, p/n 0698-4444.
CHANGE 12
6010A
In the Diode board A5 parts list and schematic diagram change R2 from 2.87K 1% p/n 06983151 to 4.87K 1%, p/n 0698-4444.
6011A
In the option 002 (Appendix A) parts list and schematic diagram delete R57 and solder pin p/n
0360-1300.
6012B
In the Diode board A5 parts list and schematic diagram change CR4 to p/n 1901-0887. Delete
heatsink (ref. Q2) p/n 06032-0018, heatsink bracket 06032-00017 and replace with inner heatsink
(ref. Q2) p/n 06032-00006 and outer heatsink (ref. Q2) p/n 06032-00018.
121
CHANGE 13
6010A
In the option 002 (Appendix A) parts list and schematic diagram delete R57 and solder pin p/n
0360-1300.
6011A
In the parts list for the A1 Main Board Assembly change C17, C18 to 1000µF 50V, p/n 01803019. Change C10 to 22µF 250V, p/n 0180-0426.
6012B
In the option 002 (Appendix A) parts list and schematic diagram delete R57 and solder pin p/n
0360-1300.
CHANGE 14
6011A
In the parts list for the A2 Control Board Assembly add R130, 1M 1% 1/8W, p/n 0698-8827.
Delete C85. In the Chassis, Mechanical, delete AC output cover with strain relief, p/n 50603237. Add AC output cover, p/n 5040-1627, and strain relief, p/n 5040-1625. In the parts list for
the A1 Main Board Assembly delete C33 and R25.
6012B
In the parts list for the A1 Main Board Assembly change C17, C18 to 1000µF 50V, p/n 01803019. Change C10 to 22µF 250V, p/n 0180-0426.
CHANGE 15
6011A
In the parts list for the A5 Diode Board Assembly change CR1 and CR5 to 1901-1127. In the
parts list for the A1 Main Board Assembly change XA4, XA5 to 1251-7891. Under A4 and A5
Mechanical parts list change P1 to 1251-8696. In the parts list for A6 AC Input Filter delete
capacitor C9. In the parts list for CHASSIS MECHANICAL, change front frame casting to p/n
5021-8803; chassis to p/n 06032-00001; front sub-panel to p/n 06032-00009; and handle retainer
(front) to 5040-7219.
6012B
In the parts list for the A1 Main Board Assembly delete C30 and R25.
CHANGE 16
6011A
In the parts list for the A3 Front Panel Board delete DS1-8 and replace with the following:
DS1
1990-0681
DS2-4 1990-0540
DS5
1990-0681
DS6-8 1990-0540
6012B
In the parts list for the A2 Control Board Assembly add R130, 1M 1% 1/8W, p/n 0698-8827.
Delete C85.
CHANGE 17
6012B
122
In the parts list for the A1 Main Board Assembly change XA4, XA5 to 1251-7891. Under A4
and A5 Mechanical parts list change P1 to 1251-8696.
CHANGE 18
6012B
In the parts list for A6 AC Input Filter delete capacitor C9.
CHANGE 19
6012B
In the parts list for CHASSIS MECHANICAL, change front frame casting to p/n 021-8803;
chassis to p/n 06032-00001; front sub-panel to p/n 06032-00009; handle retainer (front) to 50407219 and handle retainer to p/n 5040-7220.
CHANGE 20
6012B
In the parts list for the A3 Front Panel Board delete DS1-8 and replace with the following:
DS1
1990-0681
DS2-4 1990-0540
DS5
1990-0681
DS6-8 1990-0540
123
Download PDF