Basic HTML Version
:xxn::x
Sw.
is
Stuck On. This message indicates that a switch, which is not usually On,
remains in the On position after the game is switched On. The stuck switch is essential for game
play (for example, a coin chute switch, the slam tilt switch, the plumb bob tilt switch), and should be
cleared to permit proper game operation.
Ground Short Row-N,
Wht-JaX.
Frequent appearance of this message requires activation
of the Switch Levels Test to locate the switch causing the "WHT-xxx ROW x SHORT" message.
Possible 'row short' causes are: 1) Slam Tilt (or other coin door) switch touching the grounded coin
door; 2) A
leaf-type,
playfield switch touching a grounded part;
3)
Players poking metallic
objects (wires, coat hangers, etc.) into the game;
4)
Switch cable insulation pierced or damaged
allowing bare wire contact with a grounded part;
5)
All switches in a row closing at the same time
(Note: This instance is NOT a switch problem; however, for most games this is a very rare
possibility).
"Bead MotorlSwitch Error" - Possible Causes:
1. The motor that turns the head is not functioning.
2. The switch that positions the head is not operating correctly (broke or needs adjustment).
This error message gets set when the head turns and does not see a switch position closure within
20 seconds. The usual cause is the head positioning switch (top of the head) is not adjusted properly.
It should trigger closed when not on an indentation and open when on an indentation. The head
will NOT work properly unless this switch is adjusted correctly. See T. 12 - Head Motor/Switc
&
T.16 Head Manual tests for help in adjusting this switch.
FactorySettingsRestored.
Repeated appearance of this message indicates that the CMOS
RAM
no longer retains any custom Pricing or Game Adjustment settings and has reverted to
factory default settings. Generally, the following CPU checks will isolate the cause of the CMOS
RAM
memory
failure.
The voltage at pin 28 of U8 should be +5V (game turned On) and at least
+3.8V (game turned
om.
When the voltage drops below
+3.BV,
memory reset occurs. Check the
batteries and battery holder. Be sure that the batteries are good and that there is no contamination
on the battery holder terminals. Tum the game OFF, and use an ohmmeter to check diodes D1 and
D2 on the CPU Board.
D1 should read 0 ohms when forward-biased and infinite ohms when
reverse-biased. D2 should read 15 ohms when forward-biased and infinite ohms when reverse-
biased.
116ChecksumEn-or. The game ROM checksum is invalid. If this occurs replace the game
ROM.
TIme and Date Not Set. The real time clock is not running. If this occurs go to U.4 of the
Utilities Menu and set the time and date.
The CPU has three L.E.D.s located on the upper left.side of the board. On game power-up the top
and bottom L.E.D.s turn On for a moment then, the top L.E.D. turns Off and the center L.E.D.
starts to blink rapidly. The bottom L.E.D. remains On. The system has detected a problem if the
following happens:
THE MACHINE 144