THE PIT 
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    PARTS SIDE      SOLDER SIDE
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         +5V |  A | 1  | +5V
         +5V |  B | 2  | +5V
        +12V |  C | 3  | +12V
    -SPEAKER |  D | 4  | +SPEAKER
             |  E | 5  | C. SYNC
         KEY |  F | 6  | KEY
       GREEN |  H | 7  | RED
        BLUE |  L | 8  | VIDEO GND
             |  K | 9  |
        COIN |  L | 10 |
     START 2 |  M | 11 |
             |  N | 12 | START 1
             |  P | 13 | UP
             |  R | 14 | LEFT
             |  S | 15 | DOWN
             |  T | 16 | RIGHT
             |  U | 17 | FIRE
             |  V | 18 | 
             |  W | 19 | 
             |  X | 20 | 
         GND |  Y | 21 | GND 
         GND |  Z | 22 | GND
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