The plugs that come off the perimeter of the PCB board all have specific destinations. If you have a fault with a specific part of a machine it is often helpful to be able to check that the plug for this part is plugged in properly amd does not have a loose wire. This page guides you on which plug goes where on the standard and jumbo machines.

STANDARD MACHINE PLUGS

PCB BOARD CONNECTOR PINS
J1	Joystick and drop button
J2	Credit display
J7	Coin and prize meters
J8	Coin mechs and note readers
J10	Prize sensor -- the little plug in the corner (siren if disconnected)
J6	Volume and music
J5	Voltage adjustments
JPI SOLID WHITE	Power into pcb from power supply
J4 BIG METAL	Gantry connector -- to all overhead motors, switches and claw

JUMBO MACHINES

PLUG	WHERE DOES IT GO TO?
JP2	Power input of 24V and 48V for motors and claws.
JP11	Prize sensor. Be careful not to put on JP12 which is next to it and the same size.
JP15	Joystick, drop button, tilt sensor, drop button light.
JP23	Speaker and volume control knobs.
JP3	Power input of 12V and 5V for pcb board and power all other 12V devices on machine eg coin mech, credit display, LCD screen, speakers.
JP20	LCD display control.
JP6	Coin mechs and note readers.
JP7	Extra coin mechs if used.
JP19	Connected to LCD display
JP16	Connected to credit display.
JP5	Coin meters and prize meters.
JP1	To gantry via fuse board.