Star Tech Journal

Issue: 1982-July - Vol 4 Issue 5

18
STAR*TECH JOURNAL/JULY 1982
STAR1f JECH JOURNAL
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VOL. 4/#1 MARCH '82
VOL. 4/#2 APRIL '82
VOL. 4/#3 MAY '82
VOL. 4/#4 JUNE '82
Taito "Qix" New Rom Available •
Nintendo "Donkey Kong" Cabinet
Problems • Service Notes: Atari
"Centipede", Gottlieb "Black Hole"
• Williams "Make Trax'' Increase
Appeal Using Options • Nintendo
"Donkey Kong" PCB Interchange-
ability • Atari "Asteroids" Display
Problem • Gottlieb Switch Arcing
Modification • New System Pre-
view/Williams "Hyperball" • Stern
Video Power Supply Interchange-
ability • Rock-Ola 473,474, 468-
1 Credit Mod • Gremlin/Sega's
Digital Tech Test (Part 3) • Midway
"Kickman" Service Notes • Gottlieb
"Haunted House" Prom ID • Over-
voltage Protection for Williams
"Defender" • Atari "Centipede":
Erasing High Scores • Trouble-
shooting With The Logic Comparator
• Midway CRT Substitutions •
Midway "Bosconian" Service Video
Tape • Service Tips: Rowe Bill
Changers, Williams Flippers, At~
Coin Doors • Midway's X-Y Mon-
itor Troubleshooting Guide (Part 2).
Gottlieb's New System BOA •
Nintendo "Donkey Kong" Pix Flip
Mod • Taito "Qix" Static Mod •
Midway Mini "Pac-Man" Static
Solution • On The Service Trail...
Nintendo "Donkey Kong", Rowe Bill
Changers, Tommy Lift Gates, Stern
Pop Bumpers Midway "Ms. Pac-
Man" Notes • Taito "Oix", Midway
"Galaga" & "Kickman" PCB Lock-
Up Mods • Midway "Kick"/"Kick-
man" Notes & Modifications •
Exidy "Mouse Trap" Audio Board
Modification • Bally "Flash Gordon"
Strobe Unit Service Tip • New
System Preview/Gottlieb's "Haunted
House" • Nickel/Dime Adjust-
ments for Jukebox Coin Mechs •
Rowe Responds to Erickson •
Atari Monitor Tech Tips • Midway's
X-Y Monitor Troubleshooting Guide
(Part 3) • Midway "Ms. Pac-
Man": PCB Layout Difficulty Mod
• Fluke's New Tester for Trouble-
shooting
Microprocessor-Based
Games • Doing Away With That
Tired Feeling • Gremlin/Sega's
Digital Tech Test (Part 4)
Field Service Tips: Williams
"Hyperball" Notes, Williams PCB
Interchangeability, Atari "Centipede"
Board Revisions • New Input
Protection Circuit for Wells-Gardner
Color X-Y Display • Stern "Turtles"
Update Kit • Newport Joystick
Replacement Solution • On The
Service Trail ... AOE '82 Show
Report, Williams "Hyperball" Loca-
lion Notes, Williams "Hyperball"
Handles, Response to Rowe Letter
• Williams "Hyperball" Ball Lift
Motor Kit and Control Panel Align-
ment • Annual Technicians
Convention • Gottlieb Transistor
and Diode Substitution Guide •
Midway's X-Y MonitorTroubleshoot-
ing Tips (Continued) • Exidy
"Mouse Trap" Joystick Modification
• Additional Manufacturer Cus-
tomer Service Numbers • New
System Preview/Stern's "Frenzy''
• Atari "Centipede", "Asteroids"
Tech Tips • Interchangeability of
Phono Volume Controls • Gottlieb
"System 80" Prom List • Taito
"Alpine Ski" Joystick Modification
• Coin Door Maintenance: Metal/
Plastic Coin Acceptors

lnOuizltive
Gottlieb "Haunted House" Up Kicker
Burnout Solution • Bally "Rapid
Fire" Computer Volume Control •
Exidy "Mouse Trap" Enhancement
Kit • Midway "Ms. Pac-Man" and
"Galaga" Wavy Video Mod •
Nintendo "Donkey Kong" Static
Problems • Gremlin/Sega "Zaxxon"
Joystick Handle Precaution •
Gremlin/Sega "Eliminator" Service
Notes: Fuse Change, X-Y Timing
PCB Mod, Freeze Up Mod •
Midway's Color TV Monitor Repair
(Part 1) • New System Preview/
Atari's "Dig Dug" • Atari Introduces
the "Pat 9000" Test Station •
Pace's Micro Portable Soldering
and Desoldering System • Taito
"Grand Champion" Coin and Reset
Mods • Midway "Galaga" Lock-
Up Mod • Venture Line "Looping"
Loss of Audio Solution: Eprom
Exchange, Power Supply Mod •
Bright Star's New Product Line •
Deco "Lock 'N' Chase/Cassette
System Notes • On The Service
Trail .. . Pinball Suggestion, Lock
Gripe, Gremlin Report • lnOuizltive
• Gottlieb Coil Chart
r--------------------~~~~---------------------7
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19
I_N_QizITIVE
_sT-AR_*_TE_C_H _JO-UR-N-AL-/J-U-LY-1-98-2 _ _
+5v
What will be the logic state at the output
when the switch is closed?
11.
When the pushbutton is activated, does the
lamp turn ON or OFF?
12. +1 0vdc
~--4/\llN' What will be the output voltage?
IN5232B
13.
± l
l
____.T
j
T
14.
What is the total capacitance if each cap is
rated at 2500MFD?
InQuizltive Answers
In the above circuit, what is the total working
voltage if each capacitor is rated at
15WVDC?
6. 20
8. No (Xsister is "off''
9. 1 (D2 is selected)
Answers Next Month
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