Game Plan Old Coney Island switch problem

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Ron Kral

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Sep 1, 2022, 4:02:05 PMSep 1
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I'm working on a Game Plan Old Coney Island for a friend.
There were LOTS of small issues that I fixed.
A big one was replacing the targets. During that, one
of the switch wires detached and I soldered it back.
Correctly as near as I can tell.

Before that, everything worked, sort of.
Now, the flippers have stopped working AND
SOME of the switches either do not cause any coil to
fire OR cause the wrong coil to fire.

The manual is pitiful - nothing on the switch matrix
and no wire color codes for the switch wires.
Regardless, I found the diagnostic mode for the
coils and displays, but without documentation, I
cannot guess if there's a switch diagnostic mode.
IS THERE a switch diagnostic mode? How do I get
into it? Is it numbered like the coil diagnostic mode?

Any help greatly appreciated!

John Robertson

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Sep 1, 2022, 7:09:00 PMSep 1
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Pressing the Self Test button on the coin door 12 times will take you to
Diagnostics from Bookkeeping:

12th press - All lamps flash
13th press - Displays all count 0 to 9 and repeat
14th press - All solenoids fire sequentially
15th press - All closed/stuck switches are shown. - raise drop any drop
targets and remove the ball from the game.

John :-#)#

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