Solder Side | Parts Side
GND | A | 1 | GND
GND | B | 2 | GND
+5 | C | 3 | +5
+5 | D | 4 | +5
-5 | E | 5 | -5
+12 | F | 6 | +12
- KEY - | H | 7 | - KEY -
| J | 8 |
| K | 9 |
Speaker (-) | L | 10| Speaker (+)
| M | 11|
Video Green | N | 12| Video Red
Video Sync | P | 13| Video Blue
(Auto/Man) Service Switch | R | 14| Video GND
(Slam) Tilt Switch | S | 15| Test Switch (Advance)
Coin Switch # 2 | T | 16| Coin Switch #1
2P Start | U | 17| 1P Start
| V | 18|
| W | 19|
2P Left | X | 20| 1P Left
2P Right | Y | 21| 1P Right
(Flap) 2P Button 1 | Z | 22| 1P Button 1 (Flap)
| a | 23|
| b | 24|
| c | 25|
| d | 26| (HS Reset)
GND | e | 27| GND
GND | f | 28| GND