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Coin-Op : Arcade : Zaxxon : KB-3498-284

Title

Zaxxon Pinout Part 2

Author

spies.com

Article

44-pin connector at location P5 on Assy IC Brd A, Sound II

SOLDER SIDE | PARTS SIDE
------------------------------------|--------------------------------------
Gnd | A | 1 | Gnd
--------------------------------|---|---|----------------------------------
Gnd | B | 2 | Gnd
--------------------------------|---|---|----------------------------------
+5V | C | 3 | +5V
--------------------------------|---|---|----------------------------------
+5V | D | 4 | +5V
--------------------------------|---|---|----------------------------------
-5V | E | 5 | -5V
--------------------------------|---|---|----------------------------------
+12V | F | 6 | (+12V)
--------------------------------|---|---|----------------------------------
[from P4-4 & to Spkr?] Spkr - | H | 7 | Spkr + [from P4-3 & to Spkr?]
--------------------------------|---|---|----------------------------------
(Coin Meter A) | J | 8 | (Coin Meter B)
--------------------------------|---|---|----------------------------------
Coin Mech A | K | 9 | Coin Mech B
--------------------------------|---|---|----------------------------------
Reset | L | 10| Service Switch
--------------------------------|---|---|----------------------------------
P1 Start | M | 11| P2 Start
--------------------------------|---|---|----------------------------------
P1 Left | N | 12| P1 Right
--------------------------------|---|---|----------------------------------
P1 Up | P | 13| P1 Down
--------------------------------|---|---|----------------------------------
P1 Fire | R | 14| (P1 Spare)
--------------------------------|---|---|----------------------------------
(P2 Left) | S | 15| (P2 Right)
--------------------------------|---|---|----------------------------------
(P2 Up) | T | 16| (P2 Down)
--------------------------------|---|---|----------------------------------
(P2 Fire) | U | 17| (P2 Spare)
--------------------------------|---|---|----------------------------------
(Gnd) | V | 18| (Gnd)
--------------------------------|---|---|----------------------------------
R | W | 19| G
--------------------------------|---|---|----------------------------------
B | X | 20| Comp Sync *
--------------------------------|---|---|----------------------------------
(Gnd) | Y | 21| (Gnd)
--------------------------------|---|---|----------------------------------
(Gnd) | Z | 22| (Gnd)
---------------------------------------------------------------------------

* At the bottom center of the Sound II board, there is a section labeled
"Color Conv." At the far left you will see switch #4 (SW4). If this switch
is off ("0"), you will get JAMMA compatible negative composite sync. If it
is on ("1"), you will get positive composite sync.

Items in parantheses "()" are only needed for the cocktail setup, or perhaps
as extra pinouts.

Speaker @ 8 Ohms

There is an additional 10-pin connector between P1 on both boards. Pin 1
on the sound board maps to pin 1 on the video board, pin 2 on the sound
board maps to pin 2 on the video board, etc. A Zaxxon boardset should come
with the connector between these two sets of pins.

P1 connector on both boards:
Pin | Definition
------------------
1 | Unused
2 | +12V
3 | Unused
4 | Gnd
5 | Gnd
6 | Gnd
7 | -5V
8 | +5V
9 | +5V
10 | +5V

There is an additional 6-pin MTA connector at P4. I believe it is needed
to get sound.

P4 connector on Sound II Board
Pin | Definition
------------------
1 | Unused
2 | Unused
3 | Spkr + [to P5-7?]
4 | Spkr - [to P5-H?]
5 | Unused
6 | Unused

--Dave Holcomb


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