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CONNECTOR
&
COMPONENT IDENTIFICATION
Since THE MACHINE uses WILLIAMS ELECTRONICS GAMES' WPC Electronics System, a
new technique to identify connectors and other game componentsmust be introduced. Each plug or
jack receives a number that identifies the circuit board and position on that board that it connects
to. J-designations refer to the male part of a connector. P-designations refer to the female part of a
connector. For example, J101 designates jack 1 of board 1 (a Power Driver Board Board jack);
P306 designates plug 6 of board 3 (a Display Driver Board plug). Identifying the specific pin
number of a connector involves a hyphen, which separates the pin number from the plug or jack
designation. For example, J101-3 refers to pin 3 ofjack 1 on board 1.
Other game components may also have similar numbers to clarify their locations or related
circuit. For example, F501 refers to a fuse located on the Sound Board.
Prefix numbers for the WPC circuit boards are listed below.
1- Power Driver Board
2- CPUBoard
3- Display Driver Board
4- Dual or Single Display Board
5- Sound Board
cmcurr
BOARDS
WPC Circuit Boards for THE MACHINE are in the backbox. They are accessible by unlocking
the Backbox, removing the Backglass, unlatching the Insert Board, and swinging it open.
Lamp circuit boards are mounted under the Playfield.
CPU Board The WPC CPU Board,
PIN
A-12742-50002,must be equipped with the ROMspecifiedin
the ROM Summary.
SoundBoard The Sound Board PINA-12738-50002,must be equipped with the ROMs specified in
the ROM Summary.
Power Driver Board The Power Driver Board is
PIN A-12697.
Display Driver Board The Display Driver Board is
PIN A-12739-1,
-2, or -3. The dash number
indicates whether an extended display is used, and if so, how many. No extended display
=
-1, one
extended display
=
-2, two extended displays
=
-3. THE MACHINE uses the
A-12739-1
Display
Driver Board.
Single Display Board The Single Display Board is
pin
A-12794.
THE MACHINE 1-2