Re: Team EM: Flip Flop

On Sep 15, 9:13 pm, IBreakStuff <richmill...@xxxxxxxxx> wrote:
So if you've followed my previous posts, I've been having problems
with my flip flop and the problems have ranged from the game not
starting to problems with my score motor (thus my name).

I received the schematic from pbr today.  Question 1, if anyone has
the original schematic, can you read it without a magnifying glass (I
need to use two on my copy)

I can read most of the schematic, but a lot of the numbers are a bit
tough to make out.


Again, looking at the schematic, I'm not sure how I read the score
motor matrix.  I was hoping there would be something that told me what
each position of each cam does.

Unfortunately, Bally doesn't provide a chart for all of the score
motor switches like Williams does. When you are tracing a circuit and
find a score motor switch (indicated by a circle around the switch),
it will show a number representing the cam the switch is mounted on,
and a letter giving the position within the stack on that cam.

The score motor sequence chart just shows when each switch stack is
activated. Each motor cycle is one half of a revolution. The chart
shows one full revolution (2 cycles), with each cycle divided into 8
steps labeled 0-7. The switches on cam1 are active in the home
position (position zero). Any switches that are closed in this
position will show as normally closed on the schematic.

Cam 2 switches are activated 5 times per cycle, at positions 1-5.
Switches on this stack normally will handle 500 and 5000 point scores,
bonus countdown, score reel reset, and other things that need need to
happen repeatedly in quick succession. Cams 3-8 and 10 each activate
once per cycle, one after the other, in positions 1-7. Cam 9
activates 3 times per cycle at positions 3-5, useful for scoring 300
points. Cam 11 activates 6 times per cycle, but it actually fires
between the numbered positions, i.e. cam 11 activates half a step
after each activation of cam 2 (plus one extra activation). This is
used to pulse half of the score reset relays at the start of game so
even though it looks like all of the score reels advance 5 times per
cycle, only half of them are actually advance at a time, cutting the
max current in half.

You may notice that the sequence shown for both cycles is identical
for cams 1-11. Cam 12 is different though. In the first cycle, the
stack is activated continuously (not pulsed like the others) in
positions 0-5, and then deactivates at position 6. In the second
cycle, the stack is inactive in positions 0-5, and then activates at
position 6 (and stays active until position 6 of the next cycle).
This is used as an alternator. A19-A21 on the schematic shows how a
switch on this stack is used to alternate which lanes and holes are
lit after the bonus reaches 11,000. Every time the motor turns, the
lit lites will change.

Finally, and the thing that I'm trying to fix (a two parter)
The bonus lights 1000 - 8000 don't seem to work.  Although I see the
bulbs glow so I know some electricity is getting to them.  I've tried
changing the bulbs, I could use some suggestions on what to do about
that.

A23-A26 on the schematic shows the Bonus Unit, and the color of the
wires heading from the unit to the bulbs. You should be able to spot
these wire colors attached to the Bonus Unit disc in sequence, and it
should be obvious which finger steps between the traces that lead to
these wires. This finger should be grounded, and should make good
contact to the traces as it moves. You can test that it is making
good contact by measuring continuity between the finger and the trace
that it is touching. If you have poor conductivity, then the finger
contact may need cleaning or the tension needs adjusted.

More likely the problem is that the finger does not have a good
connection to ground (actually common). Try measuring continuity from
the finger to any Yellow wire. You should see zero ohms. If you
don't, you have a loose Yellow wire on the unit. On the Bally
steppers, this wire should be screwed onto the gear side of the
stepper frame.

The other problem I'm having is the double bonus light isn't working
(although now that I write this, it might be the same issue as
above.)  I cannot find anything on the schematic about that light.

The 6 Volt circuits are along the bottom of the schematic, so that is
where you will find all of the lamps. The Double Bonus lite is right
at A18. It shows that the lite should be lit when the Ball Count Unit
is on ball 3 or 5. Either there is an issue in the Ball Count Unit,
or a dirty Jones plug is blocking the current to the lamp. The White-
Orange wire from the Ball Count Unit to the Double Bonus lite is
57-1. At A-39 you can see that this wire is on the top right pin of
the 18-pin Jones plug going to the playfield. You can check
continuity to and through this plug to see if this is the problem.

The extra ball light works great.

Thanks for any help you can provide.

Rich

Steve Yates
Team-EM
http://REELpinball.com
.

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