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T.15 Gumball Test
The Gumball Test may be used to test all of the ball cycling capabilities
of your Twilight Zone Pinball Machine. The display shows the 12 critical switches that are
involved in the ball cycling:
LOWER SWITCHES:
Outhole - This is the switch at the bottom of the game that is closed by balls draining
between the flippers.
Trough - These four switches hold the balls in the lower trough. The four boxes left to
right on the display represent the four trough switches (from left to right
respectively) .
Auto-fire - This is the opto for the auto-fire kicker located just to the left of the ball shooter.
UPPER SWITCHES:
Spiral
This is the opto that detects the ball passing over the right spiral magnet. This
opto is used to signal the diverter to open and allow the ball into the gumball
machine.
Lane
This is a rollover micro switch that lets the game know that the ball has gotten
beyond the diverter and is on its way to the ball popper.
Popper
- This opto tells the ball popper to kick the ball up into the gumball machine.
Geneva - This switch is closed by the gumball motor cam to let the game know that the
motor has completed a "dispense gumball" cycle.
Exit
This is the rollover switch outside the gumball machine that lets the game know
that a gumball has left the machine.
The Gumball Test has two types of operations: Automatic and Manual. The automatic operations occur
as the result of the action of balls on the playfield. The Manual operations are the result of operator
pressing the "Enter" button.
Automatic Operations:
Reload gumball from playfield:
Any ball that is sent up the right spiral lane during gumball test will be diverted and loaded
into the gumball machine.
The display will show ·LOADING GUMBALL MACHINE. ...". The following switches will be
seen in the following order:
SPIRAL, LANE, POPPER, ENTRY
Reload gumball(s) from trough:
Any time there are more than 3 balls at the bottom of the game (in the trough anellor
outhole), the game will reload all excess balls into the gumball machine (this will happen
during gumball test, game over, OR game play).
The trough will serve a ball to the auto-fire kicker. The kicker will kick the ball through the
gumball diverter, and the popper will load this ball into the gumball machine.
Twilight Zone 1-20