Star Tech Journal
Issue: 1982-August - Vol 4 Issue 6 - Page 12
12
STARHECH JOURNAL/AUGUST 1982
SYSTEM AUDIO
The game audio section is fairly similar to that of most any video game.
All sounds are created on the super sound 1/0 board (see board set) and
preamplified by an LM3900. This preamplified signal is then routed to a
separate dual amp board. The fully amplified signal is then used to drive
the two speakers mounted in the game top panel. Keep in mind that the
volume pot is connected to the preamplifier on the super sound board and
that the audio amplifiers are mounted by themselves on a separate board.
Also, if the fuse for the unregulated + 12 volt blows, the most noticeable
effect (coin door lamps are disabled) will be a loss of audio.
CONNECTOR
A listing of game connectors may be helpful in troubleshooting some
game failures.
POWER SUPPLY
J3 - Unregulated DC input (9-pin connector)
J6 - AC in (3-pin connector)
J4 - Regulated DC voltages out (15-pin connector)
J5 - Unregulated and regulated DC voltage out (15-pin connector)
SUPER CPU BOARD
JI - Voltage in (20-pin connector)
SYSTEM AUDIO
Super
Sound
1/0 Board
J2 - Video and sync. information to monitor (9-pin connector)
SUPER SOUND 1/ 0 BOARD
J5 - Control panel switch inputs (23-pin connector)
J4 - Control and front door switch inputs and angle encoder inputs
( 19-pin connector)
J6 - Not used on "Tron" (IO-pin connector)
J3 - Connections to volume pot, audio out (9-pin connector)
Dual
Amp
Board
Notes
1. All game switches input 74LS244S on the super sound board.
2. The angle encoder is nothing more than a directional and speed
sensing optic board (like Atari steering boards).
3. The voltage input connector pins (JI) on the CPU board are much
larger (higher current) than the connector pins mounted on J2 of the
CPU board and the 4 connectors mounted on the Super Sound 1/0
Board. These smaller connector pins are extremely brittle and can
easily be broken or more likely bent. When placing these connectors
on the logic boards, be careful to make sure all pins mesh into the
female connector.
All connectors are keyed; however, there is an unused IO-pin male
connector J6 (1/0 board) with the key in Pin 8, there is also a 9-pin
female connector J2 (CPU board) with the key in Pin 7. Needless to say,
a 9-pin female with the key in Pin 7 fits nicely onto a IO-pin male
connector with the key in Pin 8. The only giveaway that something is
wrong is that one male pin on the end (Pin 1) is not connected. this
mistake is easily accomplished in bright lights or bar darkness, especially
since the J2 connector is mounted on the middle board. Fortunately
nothing is damaged. The symptom will be all game operations are
normal but no video on monitor.
I
+12vdc
(Unregulated)
Notes:
Volume Pot
1. Audio preamps (Super Sound Board) - LM3900
2. Volume Pot located on right side/coin door frame
3. Volume Pot value - 1 k ohms
4. Separate Dual Amp Board mounted left side of
cabinet
5. Audio Amps (Dual Amp Board) - MB3730
6. Speakers (2) 6"x9" 4 ohm, 1 Ow
PAC-MAN
TO
MS. PAC-MAN
INTRODUCING the sex-change operation: Ms.
Pac-Man Kit for Pac-Man.
If you decide to use a Midway Speed-Up, the
game starts to get more difficult after the
second wave.
The Kit will turn Pac-Man into a "same as
original" Ms. Pac-Man. EASY INSTALLATION.
PRICE: 1-5 Kits $225, 6 or more Kits $200.
MONEY ORDERS ONLY PLEASE.
Kit consists of: 1) Nine Chips, 2) PC Board,
and 3) Three Jumpers. Converts back to
regular Pac-Man in minutes.
r--
For more information (if you need it) call
212-799-4375 or write to: Joe Sistems, 2091A
Wantagh Avenue, Wantagh, L.I., N.Y. 11793.
ORDER B L A N K - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7
I
NAME: - - - - --
-
- - - - - - --
- --
- - - - - - - - - --
ADDRESS: - - - - - - - - -- - - - - - - - - -- - - - - - --
CITY/STATE/ZIP - - - - - - - -- - - - - - - - -- - --
- - - - - --
---
-----------
- - -- -- -- - - - -- --
PHONE: _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _
Please send me ____ Kits at $. _ _ _ _ _ each.
I am enclosing my money order for a total of $ _ _ _ _ _
Make Money Order Payable to:
Joe Sistems, 2091 A Wantagh Avenue, Wantagh, LI., N.Y. 11793
L--- -------- ---------- - ---------- -
---------- ----- --
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STARHECH JOURNAL/AUGUST 1982
SYSTEM AUDIO
The game audio section is fairly similar to that of most any video game.
All sounds are created on the super sound 1/0 board (see board set) and
preamplified by an LM3900. This preamplified signal is then routed to a
separate dual amp board. The fully amplified signal is then used to drive
the two speakers mounted in the game top panel. Keep in mind that the
volume pot is connected to the preamplifier on the super sound board and
that the audio amplifiers are mounted by themselves on a separate board.
Also, if the fuse for the unregulated + 12 volt blows, the most noticeable
effect (coin door lamps are disabled) will be a loss of audio.
CONNECTOR
A listing of game connectors may be helpful in troubleshooting some
game failures.
POWER SUPPLY
J3 - Unregulated DC input (9-pin connector)
J6 - AC in (3-pin connector)
J4 - Regulated DC voltages out (15-pin connector)
J5 - Unregulated and regulated DC voltage out (15-pin connector)
SUPER CPU BOARD
JI - Voltage in (20-pin connector)
SYSTEM AUDIO
Super
Sound
1/0 Board
J2 - Video and sync. information to monitor (9-pin connector)
SUPER SOUND 1/ 0 BOARD
J5 - Control panel switch inputs (23-pin connector)
J4 - Control and front door switch inputs and angle encoder inputs
( 19-pin connector)
J6 - Not used on "Tron" (IO-pin connector)
J3 - Connections to volume pot, audio out (9-pin connector)
Dual
Amp
Board
Notes
1. All game switches input 74LS244S on the super sound board.
2. The angle encoder is nothing more than a directional and speed
sensing optic board (like Atari steering boards).
3. The voltage input connector pins (JI) on the CPU board are much
larger (higher current) than the connector pins mounted on J2 of the
CPU board and the 4 connectors mounted on the Super Sound 1/0
Board. These smaller connector pins are extremely brittle and can
easily be broken or more likely bent. When placing these connectors
on the logic boards, be careful to make sure all pins mesh into the
female connector.
All connectors are keyed; however, there is an unused IO-pin male
connector J6 (1/0 board) with the key in Pin 8, there is also a 9-pin
female connector J2 (CPU board) with the key in Pin 7. Needless to say,
a 9-pin female with the key in Pin 7 fits nicely onto a IO-pin male
connector with the key in Pin 8. The only giveaway that something is
wrong is that one male pin on the end (Pin 1) is not connected. this
mistake is easily accomplished in bright lights or bar darkness, especially
since the J2 connector is mounted on the middle board. Fortunately
nothing is damaged. The symptom will be all game operations are
normal but no video on monitor.
I
+12vdc
(Unregulated)
Notes:
Volume Pot
1. Audio preamps (Super Sound Board) - LM3900
2. Volume Pot located on right side/coin door frame
3. Volume Pot value - 1 k ohms
4. Separate Dual Amp Board mounted left side of
cabinet
5. Audio Amps (Dual Amp Board) - MB3730
6. Speakers (2) 6"x9" 4 ohm, 1 Ow
PAC-MAN
TO
MS. PAC-MAN
INTRODUCING the sex-change operation: Ms.
Pac-Man Kit for Pac-Man.
If you decide to use a Midway Speed-Up, the
game starts to get more difficult after the
second wave.
The Kit will turn Pac-Man into a "same as
original" Ms. Pac-Man. EASY INSTALLATION.
PRICE: 1-5 Kits $225, 6 or more Kits $200.
MONEY ORDERS ONLY PLEASE.
Kit consists of: 1) Nine Chips, 2) PC Board,
and 3) Three Jumpers. Converts back to
regular Pac-Man in minutes.
r--
For more information (if you need it) call
212-799-4375 or write to: Joe Sistems, 2091A
Wantagh Avenue, Wantagh, L.I., N.Y. 11793.
ORDER B L A N K - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7
I
NAME: - - - - --
-
- - - - - - --
- --
- - - - - - - - - --
ADDRESS: - - - - - - - - -- - - - - - - - - -- - - - - - --
CITY/STATE/ZIP - - - - - - - -- - - - - - - - -- - --
- - - - - --
---
-----------
- - -- -- -- - - - -- --
PHONE: _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _
Please send me ____ Kits at $. _ _ _ _ _ each.
I am enclosing my money order for a total of $ _ _ _ _ _
Make Money Order Payable to:
Joe Sistems, 2091 A Wantagh Avenue, Wantagh, LI., N.Y. 11793
L--- -------- ---------- - ---------- -
---------- ----- --
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