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pfl PACKARD
HEWLETT
C'
SERVICE INFORMATION FROM HEWLETT-PACKARD
JULY-AUGUST 1983
c
HP Video Tapes for Technical Trainina
Learn the PractiicaA Aspects of Transistors,
Part of the "extra value" that comes Now our capability is expanding by Practical
with each Hewlett-Packard product offering you both service and appli- Transistors 90100D*
commitment to cations training via video tape. With
with useful video tapes, you can tailor your The Practical Transistor Series is a
training program to suit the many definitive, monochrome, 15-tape ex-
applications and service. In the past, needs of your organization. You may cursion into the world of transis-
this information has often been in select training programs for indi- tors. Each highly informative
the form of classroom seminars, viduals with different backgrounds program in the series is primarily
either a t your nearby HP sales of- and specific needs, present effective concerned with examining the many
fice or at one of our training facili- programs to just one or many tech- practical aspects of transistors
[ \>
ties in California. These training nicians, and offer a library of tech- rather than just dwelling on theory
programs still exist and are avail- nical programs your staff members and math. The end result will be a
able through your local HP sales can easily consult on their own . . . deeper workin derstanding of
representative. for new information or for refresher t r a n s i s t o r F S i l 1 make main-
purposes. tenance an troubleshooting prob-
. 5952-01 15 WWW.HPARCHIVE.COM OHewlett-Packard 1983
w
lems far easier and more efficient. 6. Answers by inspection; rule-of- useful in showing how to approach
series is highly recommended thumb formulas for emitter real problems in real equipment.
for electronics students, service per- follower circuit voltage gain These videocassettes provide: f-7
sonnel and engineers. A supplemen- Practical demonstrations
7. Multi-stage amplifiers
tary textbook by transistor authority
George Stanley Jr. (who also hosts 8. Troubleshooting single-stage Flexibility of use for classroom or
the series), plus a complete set of and multi-stage circuits individual study
homework problems, answers, and Latest in digital troubleshooting
9. Feedback amplifiers
certificates of completion are in- tools
cluded with the nearly nine hours 10. Why a transistor amplifies Most recent logic symbology
of video taped materia1.t
11. Troubleshooting actual multi- Useful troubleshooting tips
stage amplifier circuits
Individual tapes are: 12. FETS and unijunctions This course was designed, devel-
oped, and made for technicians. It
1. Transistors vs tubes 13. Breakdown diodes
is an appropriate bridge from tran-
2. Temperature effects on biasing 14. SCRs and tunnel diodes sistors to digital electronics, or a
digital refresher course. Equivalent
3. Current vs voltage drive 15. PIN, SRD, and HC diodes
in coverage to a college term of 13
4. Answers by inspection; rule-of-
thumb formulas for voltage gain Digital
weeks, Digital Troubleshooting is
presented in color on 14 videocas- 3
Troubleshooting 90420D* settes having a total running time
5. Answers by inspection; rule-of-
of 5 hours and 31 minutes. The HP
thumb formulas for voltage gain Developed to train HP's own tech-
with feedback nicians, this course is especially t Not eligible for quantity discount
2 BENCH BRIEFS JULY-AUGUST 1983 WWW.HPARCHIVE.COM
50351' Logic Lab is recommended for The course consists of color video 2. Basic DesigdTerminology of
performing assigned experiments. cassettes, textbooklexperiment book, microcomputers
The lab demonstrations shown in study guide, quizzes and answers.
3. Microprocessor internal hard-
video are from the workbook in- The HP 5036A Microprocessor Lab
ware
cluded with the series. Also in- is recommended for performing as-
cluded is a 180-page text and a study signed experiments. The lessons are 4. Stack pointers and i n t e r n a l
guide plus exams, solutions, and directed to technicians who are al- registers
certificates of completion. ready able troubleshoot and. re-
r$i" ? % . 5. Timing cycles, machine cycles
pair 1p n % -
C ': 1
and instructions
Individual tapes are: w. After completing the fol-
1. Introduction to digital elec- lowing two modules, technicians 6. Troubleshooting status signals
tronics should be well prepared for more
7. DMA and handshaking
advanced microprocessor trouble-
2. Binary nature of digital circuits shooting modules. The more ad- 8. Principles of interrupts
3. Basics of transistors and IC's vanced modules p r e s e n t l y a r e
9. Using interrupts
offered as live tutorial training
4. Logic gates and symbols courses (see accompanying photo). 10. Microprocessor support circuits
5. I n t r o d u c t i o n t o d i g i t a l IC They are being produced in video
11. Communication with keyboards
families format for future release.
and displays
6. Modern digital IC families Understanding Microprocessors,
Module I 90301 R* Ordering Information
7. Simple troubleshooting
techniques (includes the following five tapes) To order video programs, books, the
HP 5035T Logic Lab or the 5036A
a. Troubleshooting digital IC's 1. General history of computers Microprocessor Lab, please contact
9. Flip-flops and microprocessors your local Hewlett-Packard sales of-
2. Analog vs digital systems, three fice.
10. Counters and shift registers
state bus concept, talkers and Product HP P/N Price
11. Combinational logic circuits listeners
Practical
12. Display technologies 3. Introduction to programming Transistors 90100D* $2150
13. IC manufacturing Digital
4. Processor registers and instruc- Troubleshooting 90420D* $4000
14. Memories tion set Microprocessors
Mod. I 90301R* $1800
5 . Simple Assembly language Microprocessors
Microprocessor Training programming Mod. I1 90207R* $3700
and Troubleshooting * = Tape Formats;
Microprocessor Fundamentals,
This series of videotapes was devel- Module I1 90307R* NTSC Format PAL Format
oped to provide HP technicians with (includes the following 11 tapes) A = VHS(SP) C = VHS
a practical introduction to micropro- B = Beta 1 E = Beta
1. Algorithmic state machines D = 3/4"Umatic F = 3/4"Umatic
cessor systems.
New Application Notes Y-factor
Help Understand Phase
"e
Editor's Note: The following appli- Noise and Noise Figure ENR
cation notes are available free of Measurements
charge from the following address:
d(f)
Residual Phase Noise
Hewlett-Packard Absolute Phase Noise
1820 Embarcadaro Road
Palo Alto, CA 94303 Do you understand the following Quadrature
Attn. Appl. Notes terms? Loop Bandwidth
WWW.HPARCHIVE.COM JULY-AUGUST 1983 BENCH BRIEFS 3
If not, you should immediately ob- ment a structured troubleshooting The cost savings of computer-aided
tain copies of two new publications procedure without a computer-aided troubleshooting are then reviewed
from Hewlett-Packard: AN57-1, system. The back-tracing algorithm for engineering, manufacturing and 7
called Fundamentals of RF and Mi- is explained and flow-charted. Ex- service.
crowave Noise Figure Measure- amples show how to measure and
ments, and Product Note 11729B-1, calculate a composite signature. Po- The Logic Troubleshooting
titled Phase Noise Characterization tential time savings is estimated. System
of Microwave Oscillators. Theory of operation and probability
of error detection are also derived. The H P 55005A Logic Trouble-
AN57-1 starts with a fundamental shooting System consists of an HP-
discussion of noise and carefully ex- What is a Composite Signature? 85 personal computer, an HP 5005B
plains the concepts of noise figure programmable Signature Multi-
measurement as well as 8970A ap- A composite signature is the binary meter, and a sophisticated software
plications. Several noise measure- sum of individual signatures. The package. The software has been op-
m e n t techniques a r e discussed. composite signature magnifies the timized to run on the HP-85 so that
Appendices in the book include a power of Signature Analysis by pro- low-cost computer-aided trouble-
glossary of noise figure measure- viding a single signature that veri- shooting is attractive t o manufac-
ment terminology, derivations of fies the correct operation of an IC, t u r i n g a n d t h e system i s cost
many of the common (and not-so- microprocessor bus or digital cir- effective enough to be dedicated to
common) noise measurement equa- cuit. Composite signature saves the a specific production line or repair
tions, and a list of precautions troubleshooter time by reducing the station.
used to help keep measurements amount of visual comparisons of the
accurate. signature analyzer display to printed The system provides the user with
signature tables. Rough estimates a universal approach to all digital
Product Note 11729B-1 tells the
show that one can find the first bad products. With assistance from the
complete story of phase noise meas-
signature ten times faster than by guided probing module, the trouble-
urements using the phase detector
taking individual signatures. The shooter can quickly isolate the cause
method. Chapter 1 introduces you
time saved is realized when making of a functional failure to the faulty
to this new measurement concept.
The text covers everything from
manual comparisons of measured component(s). All necessary docu- -7
signatures to the expected ones re- mentation is consolidated into the
theory to how you make an actual corded on paper. Any grouping of system data base.
phase noise measurement. The
digital signals can be chosen to form
11729B Carrier Noise Test Set is a composite signature. One simply The application software requires no
described in the note, along with the probes the individual nodes and then further programming by the user.
other instruments that make UP the
Phase Noise System.
3 compares the composite signa- There is no complicated file system
tures to detect the presence of in- to deal with. Everything is prefor-
These two techniques are rapidly dividual f a u l t y waveforms. Of matted and self-contained. One need
gaining their places as popular course, with a computer-aided sys- only save and recall data bases. The
"new" measurements in laborato- tem there is no advantage because operating system is present on every
ries and on production lines. Every comparisons of signatures to mem- tape or disc and is completely menu
repair technician and system engi- ory are done automatically. There- driven via the HP-85 softkeys.
neer who works around RF and mi- fore, composite s i g n a t u r e i s
crowave equipment will hear talk primarily used in manual trouble-
about these measurements. Be pre- shooting applications.
d
pared and know what your co-work-
ers are talking about! About AN222-5
New Application Notes AN2224 is about the HP 55005A Service Notes from HP relating to
Describe Composite Logic Troubleshooting System and personal safety and possible equip-
Signature Troubleshooting describes how the system can be ment damage are of vital impor-
and the Logic used in a manufacturing or service tance to our customers. To make you
Troubleshooting System test strategy. The Note discusses the more aware of these important
Jim Bechtold, Editor
system's contribution of faster
troubleshooting and cleaner, more
notes, they are printed on paper
with a red border, and the service 3
accurate documentation. It also ex- note number has a "8' suffix. In
About AN222-6
plains how the system is used t o order t o make you immediately
AN222-6 shows you how a compos- troubleshoot, manage data bases and aware of any potential safety prob-
ite signature can be used to imple- create troubleshooting procedures. lems, we are highlighting safety-re-
4 BENCH BRIEFS JULY-AUGUST 1983 WWW.HPARCHIVE.COM
lated service notes here with a brief
description of each problem. Also, in
order to draw your attention to
safety-related service notes on the
service note order form at the back
of Bench Briefs, each appropriate
number is highlighted by being
printed in color.
8660A, 8660B, 8660C Signal
-
Generators
8662A, 8663A Synthesized Signal
May 1983 please choose from the alternatives Generators
given below to correct this situation.
SUBJECT: Product Hazard and Send your instrument(s) to the near- 8901A Modulation Analyzer
Correction Notice est Hewlett-Packard Service Office.
Product Models: 8660A, The modifications will be made at no 8956A System Interface
86608, 8660C Signal charge to you.
Generators
0 Have your own qualified technician The wire used to ground the fan in
Hazard: Possible electric
shock to operator
make the modification at your facility these instruments is not the type
with a Hewlett-Packard supplied kit. specified by the Hewlett-Packard
Corrective Action: See
Contact your local Hewlett-Packard Product Safety Manual. Therefore,
attached Product Safety
instrument field engineer or instru- the wire should be changed to make
Service Note
ment service manager to request a
these instruments comply with the
modification kit to be sent out at no
Dear 8660AlBlC Customer:
charge. They will need to know which
standard and prevent a potential
We have recently discovered a poten- kit and how many to send. See the safety hazard.
tial safety hazard condition with our attached Product Safety Service
8660A, 8660B and 8660C Signal Gen- Note to determine which kit you re- The procedure involves replacing the
erators. In the event an insulation fail- quire. Your qualified technician existing 24 Ga. black wire from the
ure were to occur in the instrument should be able to make the modifi- fan frame to the instrument chassis
cooling fan such that the fan body be- cation in approximately 30 minutes. with an 18 Ga. greedyellow wire as
comes live, the fan housing could also required by the standard.
Have your own qualified technician
become live. This condition would
make the modification at your facility
present a serious shock hazard to the
with material you acquire yourself. For a detailed procedure, please
operator and therefore immediate cor-
The attached Product Safety Serv- order Safety Service Notes 8662A-
rective action should be taken.
ice Note contains a list of the re- 8 3 , 8663A-l-S, 8956A-1-S or
We feel that the probability of this con- quired material and the procedure to 8901A-2-S.
dition being present now or in the fu- perform the modification. If you re-
ture is very low. This is based on our quire assistance, contact your local
evaluation of the condition and the fact
8901A Modulation Analyzer
Hewlett-Packard Service Office. Your
that, to our knowledge, there have been qualified technician should be able
no occurrences in the field in over 11 to make the modification in approx- In addition to replacing the black
years of instrument use. However, the imately 30 minutes. wire from the instrument chassis to
nature of the possible safety hazard is the fan frame, the 8901A should
Please accept our apologies for any
serious and appropriate precautions
inconvenience that this situation causes
have an additional wire installed
should be taken. from the fan frame to the fan cover.
you and our thanks for your help in
In order to have your instrument(s) correcting it.
modified as soon as possible, and to For more information, order Safety
minimize the impact to your operation, Spokane Division Service Note 8901A-2-S.
Editor's Note: is identified by its housing depth of
The above letter is attached to copies one inch, while the new fan housing
of Safety Service Notes 866OA-31-S, depth is 2.7 inches. The part num-
8660B-34-S, and 866OC-11-S. The bers of the modification kits are
modification consists of adding an 08660-60378 for the old fan and
18 G a . greenlyellow wire to posi- 08660-60376 for the new fan. For
tively connect the fan and housing to more details, please order the above
the instrument chassis. The old fan referenced Safety Service Notes.
WWW.HPARCHIVE.COM JULY-AUGUST 1983 BENCH BRIEFS 5
419A D(> NULL VOLT\ AETER 3453A DIGITAL STIMULUS RESPONSE UNIT
419A-9B. Serials Cl948A05803 and below. New and 3453A-4A. All serials. Instructions for proper align-
improved batter] replacement.
I ment of the HP-IB interface connector.
419A-10A. Serials 0948A05830 to C1948A06037. Bat-
tery charger modification. 3455A DIGITAL VOLTMETER
546A
. --.-
LUUIG
-...w-E R
ru
3455A-21, All serials. DC Performance Testing on the
lOOV and lOOOV ranges.
546A-2. Configuration Code 01 A. Component 3455A-22. Serials 1622A12900 and below. Recom-
changes required when changing IC A1 U1. mended replacement of terminal assemblies.
3455A-23. All serials. Recommended test equipment
853A SPECTRUM ANALYZER DISPLAY change.
853A-3. Serials 2223A00101 to 2223A00276,
2223A00278 to 2223A00280, 2223A00286 to
3456A DIGITAL VOLTMETER
Need Any Service 2223A00406. Improved plug-in retaining latch.
3456A-4A. All serials. Recommended spare parts
kit-part number 03456-69802.
1332A X-Y DISPLAY
Notes? 1332A-3A. Serials 1945A and below. Modification to
improve dynamic range. Supersedes 1332A-3 and
3456A-12. Serials 201 5A. Differences between in-
struments with and without cooling fans.
3456A-17A. All serials. Customer service kit for com-
1332A-4.
ponent level repair.
They're free! 1340A X-Y DISPLAY
1340A-6. Serials 2038A and below. Modification to
improve X-Y amplifier performance.
3468AlB DIGITAL MULTIMETERS
Here's the latest listing of Service 3468A-2. All serials. Recommended replacement for
the A1 U l O l Input Operational Amplifier.
Notes. They recommend modifica- 1350A GRAPHICS TRANSLATOR
34688-1. All serials. Battery Retrofit Kit installation for
1350A-7. All serials. Preferred replacement for A4
tions t o Hewlett-Packard instru- dynamic RAM.
Battery Retrofit Kit P/N 03468-68701.
m e n t s t o increase r e l i a b i l i t y ,
1351A GRAPHICS GENERATOR 3478A DIGITAL MULTIMETER
improve performance, or extend 1351A-2. All serials. Preferred replacement for DAC 3478A-3. All serials. Recommended replacement for
their usefulness. transistor. the A1 UlOl Input Operational Amplifier.
1630AlD LOGIC ANALYZER 3484A DIGITAL VOLTMETER SYSTEM
Use the order form at the rear of 1630AID-0. Service Note Index. 3484A-6. All serials. Recommended substitute trans-
istor for Transistor Q1 of the DC Amplifier
Bench Briefs to order, free of charge, 1630A/D-l. 1630A serials 2311A00231 and below;
assembly.
1630D serials 2311A00791 and below. ESD pro-
individual Service Notes document- tection for the HP-IL interface. 3484A-7. All serials. Recommended replacement for
the front panel Sample Rate adjustment poten-
ing several instruments. 1630AiD-2. 1630A serials 231 1A00213 and below;
tiometer, R3.
1630D serials 2311A00769 and below. 200 MHz
oscillator rework to improve performance.
3495A SCANNER
If you would like t o purchase large 1630A/D-3. 1630A serials 231 1A00223 and below;
3495A-78. All serials. Spare parts and troubleshooting
1630D serials 231 1A00790 and below. Display
quantities of Service Notes covering adjustment to improve viewing.
information.
a wide range of instruments, or if 3497A DATA ACQUlSlTlON/CONTROL UNIT
1727A OSCILLOSCOPE
you desire a complete history of all 1727A-2. All serials. Modification to improve pulse re- 3497A-8A. All serials. Customer spare parts recom-
Service Notes documenting all sponse and bandwidth. mendations.
3497A-12. All serials. 3497A mainframe verification
changes to your instruments, Hew- 1980AlB OSCILLOSCOPE MEASUREMENT checks.
lett-Packard offers a microfiche li- SYSTEMS
1980A/B-l0A. 1980A serials 2240A- and below; 371 1A IFlBB TRANSMITTER
brary for a modest, one time charge. 19806 serials 2216A- and below. Modification to 371 1A-3. All serials. Preferred replacement for trans-
There is also a microfiche subscrip- prevent random bus lock up or syntax errors. istor A l Q l and capacitor AlC1.
tion service available that automat- 1980AiB-15A. Serials 2216A and below. Modification 371 1A-4. Serials 201611-00326 to 2016U-00349.
to decrease the response time for rapid program- Modification to improve slave output amplitude.
ically updates the library on a med trigger level slewing routines.
quarterly schedule. 1980A/B-16. 1980A serials 2309A-00205 and below; 3724A BASEBAND ANALYSER
19806 serials 2306A-01716 and below. Modifica- 3724A-3. Serials 2148U-00141 and below. Preferred
tion to prevent random line fuse failures and/or A1 replacement for - 12V regulator (A9U2).
The part numbers for the microfiche board burning associated with A1Q2 failures.
library and subscription service are: 3725A BASEBAND ANALYSER DISPLAY
3060A/3061A/3062A BOARD TEST SYSTEM 3725A-1. Serials 2237U-00171 and below. Recom-
3060A-54. All serials. Board test language 200, revi-
mendations when making NPR measurements is a
sion 2308. 16kHz slot.
Library of 3061A-1, All serials. Board test language 200, revision
Service Notes- 5951-6511 2308.
3746A SLMS
3062A-1. All serials. Board test language 200, revision
Subscription service- 5951-6517 2308. 3746A-6. Serials 225OU-00332 and below. Preferred
replacement for IC A22U16.
3325A SYNTHESIZER/FUNCTION
Contact your local HP Sales Office GENERATOR 3747AIB SELECTIVE LEVEL MEASURING
for ordering information. 3325A-1OB. Serials 1748A-04251 and above have SET
parts 8120-3108 and 1251-6567; 1748A-04401 3747A/B-8A. Serials 2030U and below. Preferred re-
and above have parts 8120-3216 and 1251-5064. placement of memory assembly A109.
New PC board connectors and cables. 3747A/B-27. Serials below 2142U-00028 for 3747A
and below 2143U-00146 for 37478. Modification to
3400A RMS VOLTMETER improve noise floor at 100kHz.
4038188 PORTABLE AC VOLTMETER 3400A-13. Serials 2225 and below. Recommended
403BiBB-9C. Serials 0986A20520 and below. New replacement photochopper amplifier assembly. 3779A PRIMARY MULTIPLEX ANALYSER
and improved battery replacement. 3779A-26. All serials. Intermittent incorrect operation
403BiBB-lOA. Serials 0986A20521 to 0986A21374. 3421A DATA ACQUlSlTlONlCONTROL UNIT of frame alignment measurement.
Battery charging circuit improvement, 3421A-4. All serials. Recommended replacement for 3779A-27. All serials. Modification to cure A4 filter in-
the A1 UlOl Input Operational Amplifier. stability at low temperatures.
410C ELECTRONIC VOLTMETER
41OC-23. Serials 0982A22438 and below, and serial 3437A SYSTEM VOLTMETER 37798 PRIMARY MULTIPLEX ANALYSER
prefixes 982 and below. Recommended replace- 3437A-7. All serials. Product support package for 37796-28. All serials. Modification to cure A4 filter in-
ment for the A3 Amplifier Assembly. 3437A Systems Voltmeter. stability at low temperatures.
6 BENCH BRIEFS JULY-AUGUST 1983 WWW.HPARCHIVE.COM
3779C PRIMARY MULTIPLEX ANALYSER 6012A POWER SUPPLY 8566A SPECTRUM ANALYZERS
3779C-7. Serials 223511-00259 to 223511-00273. 6012A-5A. All serials. Assembly level FET repair pro- 8566A-19. Serials 2318 and below. Preferred re-
Modification to improve mounting security of mains cedure. placement of 18.4 MHz oscillator crystal.
'T auxiliary transformer.
3779C-8. Serials 2138U-00125 and below. Modifica-
tion to cure A4 filter instability at low temperatures.
6034A POWER SUPPLY
6034A-6. Serials 2222A00750 and below. Replace-
8668A SPECTRUM ANALYZERS
8568A-43. Serials 2318 and below. Preferred re-
3779C-9. Serials 2235U-00289 and below. Software ment of three 16 K EPROMS by a 64 K ROM. placement of 18.4 MHz oscillator crystal.
update for new type EPROMS.
37790-10. Serials 2235U-00249 and below. Modifica- 6140A DIGITAL CURRENT SOURCES 8656A SIGNAL GENERATOR
tion to cure "ringing" on power supply. 6140A-5. Serials 2227A-00484 and below. All J20, 8656A-17. Serials 2136A and below. Modification to
J99, P05, 061, 062, 063 and 064 options. Modifi- improve filtering of the 15 Vdc supply voltage to the
37790 PRIMARY MULTIPLEX ANALYSER cation to simplify calibration. Supersedes 6140A-4. heterodyne section.
3779D-7. Serials 2235U-00204 to 223511-00208. 8656A-18. Serials 2228A and below. Modification to
Modification to improve mounting security of mains 7470A GRAPHICS PLOTTER the 50 MHz reference oscillator to improve
auxiliary transformer. 7470A-1. All serials. Modification to improve performance.
3779D-8. Serials 2142U-00125 and below. Modifica- performance. 8656A-19. Serials 2232A and below. Improved fre-
tion to cure A4 filter instability at low temperatures. quency modulation adjustment.
3779D-10. Serials 223511-00199 and below. Modifica- 7585A DRAFTING PLOTTER 8656A-20. Serials 2223A and below. Improved spec-
tion to cure "ringing" on power supply. 7585A-1. Serials 2309A and below. Modification to tral purity of modulation output.
improve operation at 9600 baud.
3781NB PATTERN GENERATOR 8660AIBIC SYNTHESIZED SIGNAL
I 3781A-2. All serials. Recommended modifications to 8111A PULSEIFUNCTION GENERATOR GENERATOR
prevent subsequent power supply failure. 81 11A-1A. Serials 2215G00956 and above. Temper- 8660A-31-S. Serials 2121A01964 and below. Modifi-
3781A-3. All serials. Preventive maintenance to ature compensation for selected Shaper IC's. cation to prevent possible shock hazard.
minimize possibility of intermittent failures. 86608-34-S. All serials. Modification to prevent possi-
37818-5. All serials. Recommended modifications to 8112A PROGRAMMABLE PULSE ble shock hazard.
prevent subsequent power supply failure. GENERATOR 866OC-114. Serials 2242A04297 and below. Modifi-
81 12A-1. Serials 2136G00405 and below. Protection cation to prevent possible shock hazard.
3782AlB ERROR DETECTOR against damage of the output amplifier by elec-
3782A-2. All serials. Preventive maintenance to trostatic discharge. 8662A SYNTHESIZED SIGNAL GENERATOR
minimize possibility of intermittent failures. 8662A-7. Serials above 2002A00298 and below
37828-5. All serials. Recommended modifications to 8160A18161A PROGRAMMABLE PULSE 2244A01143. Modification to improve FM spur.
prevent subsequent power supply failure. GENERATOR 8662A-8-S. Serials 2301A01160 and below. Modifica-
8160A-5. Serials 2047G00586 and above. Recom- tion to correct improper grounding of fan.
3785AlB JITTER GENERATOR AND mended replacement of ECL dual gate IC.
RECEIVER 8161A-1. Serials 2202G00256 and above. Replace- 8663A SYNTHESIZED SIGNAL GENERATOR
3785A-8. All serials. Recommended modifications to ment of ECL dual gate IC. 8663A-1-S. Serials 2245A00110 and below. Modifica-
prevent subsequent power supply failure. tion to correct improper grounding of fan.
37858-7. All serials. Recommended modification to 8305A SWEEP OSCILLATOR
prevent subsequent power supply failure. 8350A-1. Serials 2146A01110 and below. Modification 8683AlB SIGNAL GENERATOR
'7 37938 DIFFERENTIAL PHASE DETECTOR
37936-4. Serials 2309U-00446 and below. Modifica-
to protect the power supply from shorting to the
bottom cover.
8350A-4. Serials 2205 and below. +5VA (A7U16)
8683A-2. All serials. Retrofitting option 002, reverse
power protection.
86838-1. All serials. RF output assembly kit
tion to prevent possible degradation of AM to PM regulator replacement. installation.
performance.
8447A 0.1 to 400 MHr AMPLIFIER 8684AIB SIGNAL GENERATOR
3964A INSTRUMENTATION TAPE 8447A-1. Serial prefix 1937A and below. 400 MHz 8684A-3. All serials. Retrofitting option 002, reverse
RECORDER preamplifier replacement. power protection.
3964A-17A. Serials 2314A and above. New type re- 86848-2. All serials. RF output assembly kit
commended instrumentation recording tape. 8447A, OPTION 001, 0.1 TO 400 MHr DUAL installation.
AMPLIFIER
396849 INSTR UMENTATlON TAPE 8447A-2. Serials 1937A and below. 400 MHz 8901A MODULATION ANALYZER
RECORDER preamplifier replacement. 8901A-2-S. Serials 2251A and below. Modification to
3968A-17A. Serials 2314A and above. New type re- correct improper grounding of fan assembly.
commended instrumentation recording tape. 8557A SPECTRUM ANALYZER
8557A-9. Serials prefixed 2229A. Recommended 8903A AUDIO ANALYZER
4935A TlMS bandwidth filter assembly A8/AlO replacement kit. 8903A-7. Serials 2150A and below. Modification to
4935A-9. Serial prefixes 2248 and 2305. Modification 8557A-10. Serials 2203A01756 to 2229A02131. Pre- prevent shorts between the bottom cover and
to correct P/AR measurement. ferred replacement for DPM brackets. mother board.
5150A THERMAL PRINTER 85586 SPECTRUM ANALYZER 8956A SYSTEM INTERFACE
5150A-5. Serial Prefix 2144A. Change transistor 85588-27. Serials 2145A and below. Front panel re- 8956A-1-S. Serials 2239A and below. Modification to
A l Q 2 to improve reliability of printer paper ad- trofit kit. correct improper grounding of fan.
vance circuit. 85588-28. All serials. Preferred replacement for
transistors A17Q1 and A17Q2. 59308A TIMING GENERATOR
5180A WAVEFORM RECORDER 85586-29. Serials prefixed 1914A through 2245A. 59308A-1A. All serials. HP-I8 verification program
5180A-12A. Serials 2204A00191 and below. Modifi- Preferred replacementfor bandwidth filter cover #1 using the 9825A.
cation to the bottom cover and information pull-out or #2.
cards for better durability. 64110A LOGIC DEVELOPMENT SYSTEM
518OA-14. Serials listed in the service note text. Mod- 8559A SPECTRUM ANALYZER MAINFRAME
ifications to eliminate generation of data spikes. 8559A-14. All serials. Preferred replacement for 64151A-4. 64151A static RAM controller. All board
5180A-15. Serials 2311A00541 and below. A10 and transistor A5A101. numbers. Modification to allow writes to ROM with-
A1 1 replacement procedures. 8559A-18. Serials prefixed 2240A and above. Pre- out generating a break.
ferred replacement for ribbon connector A16J5.
5328A UNIVERSAL COUNTER 8559A-19. All serials. Preferred replacement for sec- 642XX EMULATOR SUBSYSTEM
5328A-27A. Serials 1944A13473 and below. How to ond converter cover board. 64252A-6. 64252A 280 emulator pod. All board num-
retrofit the new A15 HP-I8 assembly (05328- 8559A-20. All serials. Electrostatic protection of input bers. Modification to pass M I cycles to the target
60043). circuits. system during background accesses.
1
WWW.HPARCHIVE.COM JULY-AUGUST 1983 BENCH BRIEFS 7
~~ ~- ~-
If you want service notes, please For European customers (ONLY) Name
check the appropriate boxes below
and return this form separately to Hewlett-Packard Firm
one of the following addresses. Central Mailing Dept. Address
P. 0. Box 529
Hewlett-Packard Van Hueven Goedhartlaan 121 City
1820 Embarcadero Road AMSTELVEE N- 1134
State Zip
Palo Alto, California 94303 Netherlands
0 40301059C 0 3061A-1 0 3497A-12 0 37810-5 0 8112A-1 0 8656A-19
0 4030-00-10A 0 3711A-3 0 3782A-2 0 8160A-5 0 8656A-20
.
0 3062A-2
0 410023 0 3325A-100 0 3711A-4 0 37820-5 0 8161A-1 0 866QA-31-S
0 419A-90 0 3400A-13 0 3724A-3 0 3785A-8 0 8350A-1 0 86600-344
0 419A-10A 0 3421A-4 0 3725A-1 0 37850-7 0 8350A-4 0 866OC-114
0 546A-2 0 3437A-7 0 3746A-6 0 37930-4 0 8447A-1 0 8662A-7
0 853A-3 0 3453A-4A 0 3747AI0-8A 0 3964A-17A 0 8447A-2 0 8662A-8-S
0 1332A-3A 0 3455A-21 0 3747Al0-27 0 3968A-17A 0 8557A-9 0 8663A-1-S
0 1340A-6 0 3455A-22 0 3779A-26 0 4935A-9 0 8557A-10 0 8683A-2
0 1350A-7 0 3455A-23 0 3779A-27 0 5150A-5 0 85580-27 0 86830-1
0 1351A-2 0 3456A-4A 0 37790-28 0 5180A-12A 0 85580-28 0 8684A-3
0 1630AlD-0 0 3456A-12 0 3779c-7 0 5180A-14 0 85580-29 0 86840-2
0 1630AlD-1 0 3456A-17A 0 377908 0 5180A-15 0 8559A-14 0 89QlA-2-S
0 1630AlD-2 0 3468A-2 0 377909 0 5328A-27A 0 8559A-18 0 8903A-7
0 1630AlD-3
0 1727A-2
0 1980AlB-10A
0 34680-1
0 3478A-3
0 3484A-6
0 3779C-10
0 3779D-7
0 37790-8
0 6021A-SA
0 6034A-6
0 6140A-5
0 8559A-19
0 8559A-20
0 8566A-19
0 8956A-1-S
0 59308A-1A
0 64151A-4
r
0 1980AIB-1SA 0 3484A-7 0 3779D-10 0 7470A-1 0 8568A-43 0 64252A-6
0 1980Al0-16 0 3495A-70 0 3781A-2 0 7585A-1 0 8656A-17
0 3060A-54 0 3497A-8A 0 3781A-3 0 8111A-1A 0 8656A-18
Please photocopy this order form if you do not
want to cut off the page
HEWLETT-PACKARD COMPANY Bulk Rate
1820 Embarcadero Road
Palo Alto, California 94303 U.S. Postage
BENCH BRIEFS
JULY-AUGUST 1983
Volume 23 Number 3
Service information from
Hewlett-Packard Company
To obtain a qualification form for a free
subscription, send your request to the
above address.
Reader comments or technical article
contributions are welcomed.
Please send them to the
Bench Briefs Editor
Editor: Jim Bechtold
Hewlett-Packard
690 E. Middlefield Rd.
Mt. View, CA 94042
All rights reserved Permission to reprint Bench Briefs granted upon written request to the Editor Printed in U.S.A.
8 BENCH BRIEFS JULY-AUGUST 1983 WWW.HPARCHIVE.COM
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