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ERROR MESSAGES
The WPC game program has the capability to aid the operator and service personnel. At game turn-on,
or after pressing the Begin Test switch, once the game has been operating for an extended period, the
display may signal with a message, "Press ENTER for Test Report". This indicates the game program
has detected a possible problem with the game.
To obtain details of the problem open the coin door and press the Begin Test switch. Press the Enter
button to begin displaying the message(s). The following messages apply to your game.
Check Switch
##.
This message indicates that at least one switch was stuck 'On' at game turn-on or has NOT been
actuated during ball play (for 90 balls or apx. 30 games). The game program compensates the game
play requirements affected by each disabled switch to allow 'nearly normal' play. This helps keep
your game earning, until the service technician can repair the problem. To verify the problem, refer
to the Test Menu text describing Switch Testing, and check each reported switch using applicable
switch tests. Always check switch operation using a ball, to simulate game conditions.
Switch
problems may often be resolved by adjusting the wire switch actuators, fixing switch circuitry
problems, securing loose connectors, etc. Mechanisms using 'opto switches'
(drop targets, etc.)
need to be checked for proper power connections (+12V dc and ground).
Check Fuses F115 and F116 and Opto 12V Supply
This message will be displayed if the game senses that all optical switches are not functioning. This
usually occurs when there is no 12V supply to the playfield optics.
The problem is likely to be a blown fuse (F109), or at connectors J 138, J139,
J
140 or J 141 on the
power driver board.
Opto Trough Bad Check Connectors, Wires and 12V Supply.
This message will be displayed if all of the optics in the playfield ball trough are not functioning. This
is usually caused by a problem with a ball trough connector supplying 12V and ground for the optical
circuits.
Pinball Missing.
This game normally uses five balls, however, it will operate with less. This message announces that
a ball is missing or stuck. When the ball is located, return it to the game via the Outhole. Other
possibilities for this problem could be malfunctions of the Ball Trough switches or the Ball Shooter
switch.
xxxxx 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 - xxx.
This message indicates that the switch wires being called out are touching a grounded part on the
playfield or coin door. The following should be checked:
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 is NOT a switch problem; however, for
most games it is a very rare possibility.
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