The Kahuna's Big Wave input/output board utilizes all 5 input IC's to control all inputs used within the game.
Should one of these five IC's become corrupt, you would need to replace that IC with a new input chip.
Swapping one for the other would create additional problems during testing. If you suspect a defective IC - JET
suggests replacing with a new chip first and not pulling one from another part of the I/O board.
MAIN BOARD INPUTS - CONTINUED
KAHUNA'S BIG WAVE - MAIN BOARD INPUT CHART CONTINUED
IC
INPUT #
CONTENT
PICTURE
U1
2
33
34
35
36
37
38
39
40
LEFT SCREEN SENSOR (UP Y 13)
RIGHT SCREEN SENSOR (L X 21)
RIGHT SCREEN SENSOR (MID X 22)
RIGHT SCREEN SENSOR (R X 23)
RIGHT SCREEN SENSOR (DOWN Y 21)
RIGHT SCREEN SENSOR (MID Y 22)
RIGHT SCREEN SENSOR (UP Y 23)
LEFT SCREEN SENSOR (MID Y 12)
JET Games
Kahuna's Big Wave Service Manual
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