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CONNECTOR IDENTIFICATION
WILLIAMS ELECTRONICS GAMES uses a special technique to identify connectors.
Each plug or jack receives
a prefix number (which identifies the circuit board), a letter, and a number. J-designations refer to the male part
of a connector.
P-designations refer to the female part of a connector.
For example, 1Ji
designates jack 1 of
board 1 (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, 1J1-3 refers to pin 3 of jack 1 on board 1.
GRAND LIZARD
CIRCUIT BOARDS
All
GRAND LIZARD
Circuit Boards are in the backbox.
They are accessible by removing the backbox glass,
unlatching the insert board, and swinging it open.
CPU BOARD. The System-11 CPU Board (p/n 0-10880) must be equipped with the ROMs specified
in the
GRAND LIZARD
(System-t
t)
ROM Summary. For this ROM complement, on
Revision
A CPU
boards (having only jumpers Wi through W7): jumpers Wi, W2, W4, WS, and W7 must be connec-
ted; on
Revision B
CPU boards (having jumpers W1 through W18): jumpers W1, W2, W4, W5, W7,
W8, Wi1, W12, W13, W14, Wi6, Wi7, and W18 must be connected. Jumper W7 is cutlremoved for
West German games.
BACKGROUND SOUND BOARD. The Background Sound Board is
pin
C-l1029.
DISPLAY BOARDS.
The Alphanumeric Display Board is
pin
0-10877.
Two of the 7-digit Player
Score Displays (SPEEDER 1, SPEEDER 2) are pIn C-l 0866. The SPEEDER 3 and 4 Displays are
pIn C-8364. The 2-digit Credit, 2-digit MATCH (also Ball-in-Play) Display is
pin
C-836S.
POWER SUPPLY BOARD. The Power Supply Board is pin 0-8345 (equipped with a relay).
Prefix numbers for
GRAND LIZARD
System-1l
circuit boards and major assemblies are listed below:
1
CPU
2 - (not assigned)
3 - Backbox Power Supply
4 - Alphanumeric Display
5 - Player Score Displays
6 - Backbox
7 - Cabinet
8 - Playfield
9 - Insert Board
10 - (not assigned)
11 -
BIG
Sound
12 - (not assigned)
13 - (not assigned)
14 - (not assigned)
15 - Flipper Power Supply
GRAND LIZARD
GAME CONTROL LOCATIONS
The On-Off switch is on the bottom of the cabinet near the right front leg.
The Volume Control is on the left inner wall of the cabinet on the tilt mechanisms board. It is accessible by open-
ing the coin box door.
The Credit switch is a pushbutton to the left of the coin door on the cabinet exterior.
GAME ADJUSTMENT/DIAGNOSTIC SWITCHES.
GRAND LfZARD
allows the operator to program virtually all
game adjustments, obtain bookkeeping information, and diagnose problems, using only three switches mounted
on the inside of the coin door and the Credit buttom beside the coin door.
ADVANCE, AUTO-UPIMANUAL-DOWN,
and HIGH-SCORE RESET are the switches located on
the inside of the coin door. Refer to the Game Status Displays text and the Text/Diagnostic
Procedures for details concerning their operation.
The Memory Protect switch is on the inside frame of the coin door. This interlock switch must be open to clear
bookkeeping totals and to make game adjustments.
It automatically opens, when the coin door opens.
The CPU Diagnostic switch (SW 2) is the left switch (of the two switches mounted on the lower edge of the CPU
Board) near a large, socketed microprocessor chip. This switch initiates the Memory Chip Test explained in the
Diagnostic Procedures.
The Sound Diagnostic switch (SW 1) is the right switch of the two mounted on the lower edge of the CPU Board.
This switch initiates the Sound Section Test. Refer to the Diagnostic Procedures.
GRAND LIZARD 2