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Connector Identification
Since DR.
DUDE
is using WILUAMS ELECTRONICS GAMES System. 11C, 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-deeignattons refer to the male part of a connector. ' P-designations
refer to the female part of a connector. For example, IJI designates jack 1 of board
3 (a CPU Board jack); 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, IJ 1-3
refers to pin 3 of jack I on board 1.
Other game components may also have similar prefixes preceding their destgnator
to clarify their locations or related circuit.
Prefix numbers for the System 11C 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 - Alphanumeric Display
5 - Aux Power Driver
6 - 'Backbox
7 - Cabinet
8 - Playfleld
9 - Insert Board
10 - Sound Board
Circuit Boards
System I1C Circuit Boards for DR.
DUDE
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 swtnging it open.
Lamp circuit boards are mounted on the Playfte1d and the insert Board.
CPU BOARD
The System lIe CPU Board
(pin
0-11883-2014) must be equipped with the
ROMs specified in the DR.
DUDE
ROM Summary. CPU Board jumpers
WI, W2, W4, W5, W7, WH, WI4, W16, and must be connected. ','
SOUND BOARD
.
,
The Sound Board is
pin
0-11581-2016, including ROMs and micro-
processor.
1
I
I
_j
DISPLAY BOARD
DR.
DUDE
has two Display Boards. The BALLYRight Display Board is
pin
0-12502-1, and the BALLYLeft Display Board is p!n D-12706.
I
1-:2 Control Locations
I
~
-I
i
L
",_ _.. . ._ _