Jersey Jack Pinball The Hobbit, Operation Manual

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The Hobbit Menu System B-17
Ball Trough Test
When you enter the
Ball Trough Test
, the LCD monitor will display the screen shown in figure
B17. The squares on the screen represent the current states of the six opto switch transmitter/
receiver pairs in the ball trough mechanism, under the lower part of the playfield. There are five
opto switches in the bottom of the trough (labeled “#1” to “#5”) and one higher, in the neck of the
trough VUK (labeled “jam”). A green square represents a blocked opto switch, typically caused by a
ball in that position in the trough. A light tan square represents an unblocked opto switch (no ball
in that position). For reference, corresponding matrixed switch numbers are shown under each
square.
You can use the Enter button to fire the trough VUK. The rightmost ball in the trough will be kicked
into the shooter lane, then Auto-Launched up the playfield. Most of the high power coils will be
enabled, so slingshots, pop bumpers, VUKs and flippers (if activated by the flipper buttons) will kick
a ball around as it rolls down the playfield - so be careful with your fingers! You can empty the
trough, one ball at a time (catching each one before it returns to the trough), and test all of the opto
switches in the process.
Note: When the coin door is opened, the game’s safety interlock switch (the upper switch on item
14, page C-2 of this manual) disables the 70-volt power running to the playfield. To allow coils to
function in the Ball Trough Test , you must either close the coin door or pull the safety interlock
switch’s actuator out (it will “click” and lock in place). When you close the coin door, the interlock
switch actuator will be pushed back into its normal (unlocked) position.
To exit the Ball Trough Test at any time, press the Back/Escape button.
Figure B17. Ball Trough Test screen.