Fantasy, Rock-Ola S.N.K., 1982 ----------------------------- SOLDER SIDE | PARTS SIDE ------------------------------------|-------------------------------------- (Power) Gnd | A | 1 | Gnd (Power) (Coin Common) Gnd | B | 2 | Gnd +5V | C | 3 | +5V +5V | D | 4 | +5V P2 Down | E | 5 | P2 Up P2 Right | F | 6 | P2 Left (Not Used) | H | 7 | (Not Used) (Not Used) | J | 8 | (Not Used) P1 Down | K | 9 | P1 Up P1 Right | L | 10| P1 Left (Not Used) | M | 11| (Not Used) (Not Used) | N | 12| (Not Used) Coin 1 | P | 13| P1 Start (Not Used) | R | 14| Coin 2 (Not Used) | S | 15| P2 Start Green | T | 16| Red Sync | U | 17| Blue (Not Used) | V | 18| Audio Output +12V | W | 19| +12V +12V | X | 20| +12V (Logic Common) Gnd | Y | 21| Gnd (Audio Common) (Power) Gnd | Z | 22| Gnd (Power) --------------------------------------------------------------------------- The game wiring diagram does not show the SK-6 Voice PC Board. It only shows a 100 Ohm volume control pot on the coin door with a 3-pin molex connector: Pin 1 goes to Pin 21 on game board and Speaker (Speaker -) Pin 2 is labeled "Audio Volume Speaker" (Speaker +) Pin 3 is labeled "Audio Output" (goes to pin 18 on game board) The game wiring diagram shows the speaker with these two labels: Audio (Volume Control) Audio Common (goes to pin 21 on game board)