Star Tech Journal

Issue: 1983-September - Vol 5 Issue 7

STAR*TECH JOURNAL/SEPTEMBER 1983
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23
IN
56. Diodes derive their name from the fact that
a)
b)
c)
d)
e)
they have only two electrodes or electrical connections.
they Cllll control two different circuits at the same time.
they are bolh a regulator and a switch.
they can operate within two distinct voltage ranges.
None of the above.
57. The schematic symbol for a diode is:
The names of various Game Synonyms
comprise this issue's word puzzle. Find and
encircle these words as they appear below.
They run vertically, horizontally, diagonally
and sometimes backwards.
GAME SYNONYMS
E K A N N V M N A I
Q J E 0 X
R z V I Q
z B s s 0
E I T R I
K H N E M
N M E V Q
T F M I H
N V N
E E I
M T A
E W T
S 0 R
U F E
M Z T
A N N
p N E
D
Q
H
T
T
0
X
K
0
B p B u
C H R A
G A 0 I L
0 E I N u
0 Q T M H
0 I A y D
0 T E D T
C Y R E L
0 A C K S
S D V E MM
P K S R D J
0 S Y L J y
R S L P C A
T 0 L H D B
S A C V U 0
Y E E F S X
U N T D U K
T J C N W N
I Z V Z 0 U
U V S U G C
b)
-t>-
d)
-If-
58. The basic function of a diode is to
a) act as a one-way valve for the flow of electrons.
b) act essentially as a switching-type device.
c) enable electrons to flow in one direction but to .be blocked from flowing in the
opposite direction.
d) • None of the above.
e) a, b, and c above.
5 9. Power rectification is one functi!)n of a diode and in this situation it
a) converts alternating current into direct current.
b) converts direct current into alternating current.
c) can be coupled with a capacitor to provide a relatively smooth source of direct
current.
d) None of the above.
e) a and c above.
60. When a diode is used in a circuit to prevent the voltage in one wire from exceeding the
voltage in a second wire, it is being used as a
a) clamping diode.
b) part of a logic gate.
c) detector diode.
d) rectifier.
e) All of the above.
lnQulzltlve Answers (August) 52)d 53)e 54)d 55)g
A E G I S Y R G B M
Find these hidden words in the above puzzle:
Sta.-.Tech Journal Technical Seminars
FUN
ENTERTAINMENT
CONTEST
MATCH
RECREATION AMUSEMENT
PLAY
SPORT
ADVENTURE DIVERSION
The next Distributor-Sponsored S•TJ Technical Seminar will be held on September
12-16, 1983. This seminar is sponsored by Betson Enterprises, Moonachie, New
Jersey. If you are interested in attending, please contact Steven Betti at 201/ 440-2200.
From New York & Connecticut: 800/526-7004. In New Jersey: 800/652-2837.
Distributors interested in sponsoring an S•TJ Technical Seminar should contact
StarirTech Journal, at 609/662-3432 for further information.
Here is the answer key
to August's puzzle:
CPU SYSTEM
T E
s
MURPHY'S IAW #507
Nature always sides with the hidden flaw.
E R
A
T
w
A
0
L
C
T
R
E
F
p R
A
F
B M A R
E 0
s L p
s C
The address label on your envelope contains your subscriber account number in the top
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N
R
u
MOVING? QUESTIONS?
T G
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D D
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0
D
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STAR*TECH JOURNAL/SEPTEMBER 1983
24
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VOL. 5/#1 MARCH '83
Purity, Convergence, and Tracking Adjustments for
Wells-Gardner Color X·Y Monitor • On The Service
Trail ... Atari's " Pole Position" Notes, Atari's" Dig Dug"
Difficulty Adjustment, Atari's "Black Widow" /'Gravitar"
Update, The Operator's Business Status, Sega "Tac-
Scan" Conversion Kit, Bally/Midway"Super Pac-Man"
Drop Off, Bally/M idway "Pac-Man Plus" • Sega
" Frogger" Intermittent Sound • Rowe/Seaburg Ser·
vice Tips • Atari " Pole Position" High Score Retention
Mod, Gas Pedal Maintenance, Steering Wheel lock·
Up, Intermittent Gear Shift, Double Vision • ROM/
PROM Test Cable Assy • Sega Electronics' ROM
line (Part 6) • Data East Cassette System Power
Supply Mod • New System Preview/ Atari's " Xevious"
• Coinco Coin Return Level Mod • Bally/ Midway
"Pac-Man Plus" Precaution • Taito "Front line"
Ribbon Cables • Taito "Wild Western" Option Switch
Settings • Atari Coin Door Part Numbers • Bally/
Midway Picture Tube Interchangeability • Manufacts:
Summary of Major Op-Amp circuits (Part 3) • News
Bits/ NEC 4-Megabit Memory Chip • Bally Feature
lamp Power Supply Mod • Gottlieb "Q*Bert" Tech·
nical Notes, Gottlieb's MA4000 Filter Board,
Troubleshooting Gottlieb's "Q*Bert" GG-111 System •
The "Bear'' Facts ... Digital logic Intro, 555 Timer
Circuits, Kasco "Driver II", Ticket Dispenser Feedback
• An R&D Tax Credit for Your Electronic Coin-Op
Business? • lnQuizitive • In Other Words/Video
Games
VOL. 5/#2 APRIL '83
Stern "Lost Tomb" Service Notes • Atari " Pole Posi·
lion" Gas Pedal Modification • On The Service Trail . .
Atari Customer/Field Service, Atari "Millipede" and
"Tempest'' Option Setting Recommendations, Wico's
New Contact Points • Design Scene Simulation
System for Sale • Bally Midway Service Bulletins:
"Baby Pac-Man" Vidiot PCB Adjustments, " Baby Pac-
Man" Schematic Typo, " Baby Pac-Man" Flipper E.O.S.
Wiring, "Centaur'' & "Speak Easy" Solenoid Expander
PCBs • Saga Electronics' ROM line (Part 7) •
Manufacturer Phone Numbers for Canada and Other
Countries • Gottlieb "Q•Bert" Symptoms/Possible
Causes, 8088 Microprocessor Notes • Nintendo
" Donkey Kong Jr." Speed Up/Down Kits • News
Bits/Flat Computer Displays • Manufacts: logic
Board lock-Ups • New System Preview/Nintendo's
"Popeye" • Taito Troubleshooting Chart for FMP001
Switching Regulator • Atari "Pole Position" Pulley
Cable • The "Bear'' Facts .. . Logic Truth Tables,
"Scoutball" Troubleshooting Tips • In Other Words/
echnical Terms • Data East " Bump 'N' Jump" Option
Switch Settings • lnQu izitive
VOL. 5/#3 MAY '83
AOE '83 Highlights • Coin Acceptors, Inc. Introduces
0
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If you need back volumes, you can check the appropriate
box(es) below. Back issues and volumes must be pre-paid when
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Low-Cost log ic Board Tester• Bally Midway Service
Bulletin: Thumper Bumper Locking Ring • On The
Service Trail ... National Lock Reports on Lockout
Problem, AOE '83 in Review • AOE Expo '83/Non-
Vldeos • Manufacts: Sega "Turbo" PROM ldentijication
Chart ·• News Bits/ Service Trends Survey • AOE
Asides • Sega Electronics' ROM line (Part 8) • A
New Company Introduces a New Imaging Surface •
New System Preview/Saga's "Star Trek'' • Bally
Midway Wire Cheating Kits • Tech Shop Profile •
Bally Feature lamp Burnout Cure • New-Tone Elec·
Ironies, lnc.'s Transient Voltage Protection Unit •
The "Bear" Facts . .. Logic Gates, logic Math, Divide-
by•N Counters, Pulse Generator, Namco " Hotball"
Hockey, Destron " Bio-Rhythm" and "Astrograph"
Modifications • In Other WordsNideo Game
Manufacturers • lnQuizitive
VOL. 5/#4 JUNE '83
AOE '83: largest Yet • Kiddie Rides USA Debuts
New Rides • COi NCO Conducts Service Seminars •
On The Service Trail ... Williams Drop Target Jumper
Wire Fix, Williams "Black Knight" Flipper Coil Replace-
ment • Atari "Tempest" Color X·Y Monitor, Bally
Midway "Super Pac-Man" Enhancement Chip • TCG
Adds New Replacement Parts • Manufacts: Introduc-
tion to the 68000 • News Bits/Hybrid Flat Displays,
Other Video Game Applications • Sega Electronics'
ROM line (Part 9) • Chemtronics Electronic Grade
Coolant • Bally Midway " Grand Slam" Fly-Away
Target Adjustment, Bally Midway "Journey'' Cassette
Notes • New System Preview/ Cinematronics'
"Cosmic Chasm" • Tech Shop Profile/United Distri·
butors, Inc. • Sega Electron ics Service Bulletins:
Sega G-80 Power Supply Ground Mod, Sega "Zaxxon"
Uprig~t/TableJoystickMod • SegaColorX·YMonitor
Zener Replacement • Analyzing the Data East
Cassette System • The " Bear" Facts: PAO Show, R·S
latch Operation, Keyboard Programmable Divide-
By•N Counter, "Scoutball" Troubleshooting Tips for
light or Sound Failure • Sole Proprietorship life
Insurance • Randustrial Corp. Maintenance Catalog
• In Other Words/Pinball Games/Mfg. • lnOuizitive
VOL. 5/#5 JULY 1983
News Bits/Dept. of Labor Service Industry Growth
Report, New Tube Family• Abloy Electric Switchlocks
Get UL listing • On The Service Trail ... Atari " Pole
Position" Front Glass Panel, Atari " Dig-Dug" and
" Xevious" Contact Points, Sega Sit Down "Star Trek"
Start Button, Meltec "Boom Balls" Trouble Areas •
Bally Midway Service Bulletins:" Journey'' Intermittent
Shut-Off of Tape Cassette, " Mappy'' Difficulty level
Setting, "Wacko", "Kozmik Krooz' r'', "Journey'', etc.
Power Schematic Manual Errors, " Super Pac-Man"/
"Mappy'' Similar Electronics Circuits • Midway Initiates
Service Newsletter for Operators • American Lock
CompanyDevelopsNewSecurityCamlock • Wells·
Gardner Color X·Y High Voltage Supply • Pace's
Pulse Heat Power Source • Manufacts: Sega Elec·
Ironies' "Turbo" Troubleshooting (Part 1) • Sega's
New 24-Hour Rapid Return on Serviced Parts •
Chemtronics Triple Purpose Plastic/Glass Cleaner •
Build YourOwn Logic Probe• Cinematronics "Cosmic
Chasm" Engineering Changes: Monitor: Jitter, Stray
lines, Power Problem, Cooling, Erratic Trackball,
Game Lock Up, Power Up Credits, Muffled Audio •
Sega Electronics' ROM line (Part 10) • New System
Preview/Universal's " Mr. Doi" • Analyzing the Data
East Cassette System (Part 2) • The Importance of
Good Cash Management • Tech Shop Profile/Pioneer
Sales & Service Inc. • The " Bear' Facts: Power Supply
Primer, JK Divide-By-Counters, "Audio Skeeball"
Tickets, Cotton Candy Vendor Retrofit KiVNew
EPROM, Troubleshooting the CDC Micron Timer •
Industry Technical Schools • Bally "Baby Pac-Man"
Switched Illum ination Mod, Atari "Quantum" Monitor
Mod• In Other Words/Conversion Kits• lnQuizitive
• HELP! Williams "Gorger" Solenoid Problem
VOL. 5/#6 AUGUST '83
News Bits/Downloading Video Software, ICs Soon to
Become Centipedes • Armor Chain Company
Announces New Anti-Theft Anchor for Vending
Machines • On The Service Trail ... Varistor Protection,
Sega's "Star Trek" Kit, Taito Rectifier Heat Sinks,
Williams' New Plastic Cabinets • Atari Tech Tips:
Dangerous Display Harness, Using the Z80 Interface,
"Food Fight" Joystick Calibration/Selecting Options
• Bally Midway 125VA Power Supply Blown Fuses
Care • Bally Midway Service Bulletins: " Baby Pac·
Man" Memory Combinations, "Ms. Pac-Man" RFI
Modification • Atari "Star Wars" Hardware • Sega
"Star Trek"/"The Kit" • Sega 24-Hour Turnaround
Update • Gottlieb Power Distribution fo r the GG-I 11
Video System • Atari " Pole Position" Heat Cure •
ETA Elects New Officers at Annual Convention •
TDP's New " Motion Fluid60" Handles lubrication fo r
Close-Fitting Parts • New System Preview/Atari's
"Star Wars" • Protection Mod for Kurz-Kasch TF650
• Tech Shop Profile/Sandler Vending Company •
Manufacts: Saga Electronics' "Turbo" Troubleshooting
(Part 2) • The " Bear'' Facts: Using Ohm's Law, How to
Troubleshoot DC Power Supplies, T, oubleshooting
Gino Rondina Hydraulic Toys, "Superball" Ticket
Motor Drive Mod; Ball Release Kit; Ball Stop Guard,
Ikemoto " Frog Hunter'' Ticket Dispenser Kit • How to
Use low-Cost Photo Equipment to Fight Crime •
I nQuizitive • All-Purpose Non-Contact Aerosol Dusi/
lint Remover Announced by Chemtronics • In Other
Words/ GPU System
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