Basic HTML Version
Connector Identification
Since GAME
SHOW
is using WIlLIAMS ELEC1RONICS GAMES System lIB, a new
connector identification technique must be introduced. Each plug or jack receives
a prefix number (which identifies the circuit board), followed by a letter ("J" or ''P''),
and a number. .J-designations refer to the male part of a connector. Pvdeslgnattons
refer to the female part of a connector. For example, IJI designates jack 1 of board
3 (a CPU Boardjack): 3P6 designates plug 6 of board 3 (a Power Supply 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, IJl-3
refers to pin 3 ofjack I on board 1.
Other game components may also have similar prefixes preceding their designator
to clarify their locations or related circuit.
Prefix numbers for the System lIB circuit boards and other major assemblies are
listed below. A prefix number may precede a component designator to identify its
associated unit (e.g., connectorlJl).
1 - CPU
2 - Master Interconnect
3 - Backbox Power Supply
4 - Alphanumertc Display
5 - Aux Power Drtver
6 - Backbox
7 - Cabinet
8 - Playfteld
9 - Insert Board
10 - Sound Board
Circuit Boards
System lIB Circuit Boards for GAME
SHOW
are in the backbox. They are
accessible by unlocking the Backbox lock, removing the Backbox glass, unlatching
the Insert Board (with lamps and the Digital Display Boards), and swinging it open.
Lamp circuit boards are mounted on the Playfield and the Insert Board.
CONTROL BOARD
The System lIB CPU Board
(pin
0-11883-2003) must be equipped with the
ROMs specified in the GAMESHOWROM Summary, CPU Board jumpers
WI, W2, W4, W5, W7, W8, Wll, W14, W16, W17, and WIg must be
connected.
SOUND BOARD
The Sound Board is
pin
0-11581-2003, including ROMs and micro-
processor.
DISPLAY BOARD
GAME
SHOW
has two Display Boards. The BALLYRight Display Board is
pin
0-12502-1, and the BAILYLeft Display Board is
p/n'D-12706.
1-2 Control locations