New Life Games Tech Forums

Just bought a Universal Double Jackpot slot.
About 25percent of the time when a coin is inserted it just drops thru.
Any ideas about a fix?
thanks
Fred

are you using real coins or tokens?  try a different sample coin.

It's a quarter machine and am using quarters!
thanks for the reply

There is also an guide that may need adjustment to force the coin past the optic

cool I will try to look for it.
Thanks

What type of Universal slot do you have? Standard with 8816 board or Ultra Series.

Ultra Series would have a CC-62 comparitor.
Standard Universal could have CC-16, CC-40, mechanical acceptor, Imoex or whatever plastic comparitor, etc.

What type of coin comparitor do you have? If it is a CC-16 or similar there is a senstivity setting on it, lower right side. Turn with very small screwdriver counter-clockwise.

Looks like I have a mechical coin acceptor. I don't see a screw adjuster. Anything else I can try?
Thanks
Fred

This link has a lot of good info on mechanical acceptors. http://newlifegames.net/nlg/index.php?topic=179.0


You could go to a CC-16 but you need a wiring harness for it too.

Post a picture if yours turns out not to be mechanical.

Yes it is mechanical. Should I replace it or go to a cc16. How do I find out how to wire it? Thanks

If you go to a CC-16 24vdc comparitor you need to connect it to the little connector that should be wrapped up under your bet buttons inside the door. There will be a purple wire, blue wire, and a black wire on this connector.
The purple is power to the CC-16 and the blue is the mpu controlled ground. The black is not used. On the side of the CC-16 there are six or seven pins. The bottom is ground and the blue wire goes there. The third pin from the bottom is the 24v connection and the purple wire goes there.
Now that connector does not reach the CC-16, there is a harness that is used. Not sure where to find one so you may need to splice the wires in.

I would post some pics but my camera battery just died.

Post a pic of your current setup and I'll get back with more help.  Does your mech. comparitor have a wired diverter coil?

Here is some info on installing a CC-16 if you go that route.

Ron (r273)

The pdf for the CC-16 is not exactly correct. Maybe when they first came out in 1985, but not anymore.

Look at my modified drawing below. The lockout coil for the 24vdc CC-16 should have two gray wires (12vdc has green wires) No wire from the harness goes to the coil. Only two wires used, the purple and blue.
Purple ends up at pin #4 and blue ends up at pin #6. Black is not used.

The resistor is optional. Universal supplies 32vdc and the resistor drops the voltage. But the CC-16 works just fine with the 32vdc supplied. Never had a problem.

Thanks for all the great info. A couple of questions, where do I get the cc-16? Where do I get the harness? I tried screwing in the screw at the top of the mechanical comparator out and it only got worse. It is screwed all the way in.
Fred

Did you find the harness in your machine with the purple/blue/black wires? Make sure it is there first. Also, does your mech. acceptor stop taking coins after max coins are played or can you add more coins and tilt the machine? (takes two extra coins past max bet to tilt)  If you cannot add more coins and tilt the machine then your acceptor has a lockout coil and those wires are already going to it.
You can check with one of vendors listed on NLG like BlueRidge or Lemans, they might have a CC-16 24v and maybe a harness.
I have a harness that fits the CC-16 but the other end does not match the Uni plug, would need to splice it in.

Is there a battery on the board? Is there going to be a problem with coin direction or placing on door? do I have to program the machine?
Thanks
Fred

I will check the tilt and coin issue and get back to you!
Fred

Yes there is a battery on the mpu board. Not sure what that has to do with the comparitor??

The cc-16 snaps in where the mech. acceptor goes. No programming needed, the board does not communicate or know the cc-16 is there.

What happens is; When the door is closed and locked the mpu grounds the blue wire. The purple wire is always 32v dc +/-. When the blue wire is grounded the CC-16 is on.
A sample coin is mounted on the CC-16. When a coin is inserted the CC-16 compares the magnetic field of the sample coin to the coin inserted. If it is a match the coin is allowed to continue to the hopper. If it does not match the coin is rejected to the coin tray. After the coin passes through the CC-16 it goes thru two optics before going into the hopper. The optics count the coin.
When maximum coins are inserted the mpu opens the ground and shuts off the CC-16 and it then rejects all coins inserted. If the player is dropping coins so fast that one extra gets thru before the CC-16 shuts off, then that extra coin is counted to the next spin. But if two or more extra get thru then the machine tilts.

How do I know it's not the optic sensor?
Thanks

Ok, lets back up! Your first post said coins just drop thru. Do you mean they come back out to the coin tray? Or, they just drop thru to the hopper? Please reply on this!

I assumed they were dropping back out to the coin tray.

If they go to the hopper without being counted then the optics are not seeing them. If it works sometimes then the optics should be ok but maybe dirty or maybe the wrong size (too big) There are two sizes of optics I believe. A picture would be nice!

The bad thing is both are happening. The main problem is them dropping into hopper but also occasionally into the tray. How do you clean the optics?
Thanks again, I am trying to post picture but my pixels are too large, I will try my iPhone.
Fred

I would use damp Q-tip, but do not use alcohol on the Q-tip.
After thinking about it, pretty sure optics are not dirty. A dirty, blinded optic would cause a tilt error.
Sounds like a problem with either optic size or path of coins.

There are programs for resizing pics, I'll search for one.

I will send a picture.

Here is a picture of the comparator and optics. Both seem to be malfunctioning. Any help would be great,
Fred

There is no comparitor in that picture. What I see is a lockout coil for a mechanical acceptor.
Do you have the mechanical acceptor?

Also, what type of coins are you using? Nickels, quarters, quarter size tokens, dollar size tokens??

Here is a pic of what should be there, mounts in front of the coil. This one is for nickels

Yes, I have the mechanical comparator. I took it out to see the wiring harness. Are those the two wires I would use to connect a cc-16? My problem is that the coins will fall into the tray or they will fall into the hopper without registering. I think the optics is OK but the path may be out of alignment. How do I fix that?
Thanks
Fred

Ok, you have the U-87P optics which are for small coins. Since you did not mention what coins you are using I will assume they are nickels.
Not much experience with this style but it looks like that screw I circled is adjustable. I would loosen it and move it to the left.
The optics should have one sensor that looks thru a slot in the coin guide. I put an arrow where the senor should be. Moving the screw and the bar it attaches to the left should force inserted coins more to the center of the optics.
Also, maybe hit the area with some canned air, a lot of dust there.

Yes, those two wires connect to the CC-16D 24v.

I forgot to mention that it uses quarters. I will try adjustments and let you know.

Hmmm, nickels maybe, but quarters should not get past the optics.
What you can do is take the white button near the yellow reset switch and pull it out. It will lock in place and simulates the door closed. Then on your door I think I see a microswitch on the door lock. (most have optics) Push the microswitch so the machine thinks the door is now closed and locked. With the door open and the white switch pulled and microswitch closed the coil will pull in and you can insert coins with the door open and watch to see what is happening. Once the max bet is reached the coil will pop out and the acceptor should reject any more coins.
I can't see why the optics would miss quarters unless they are somehow missing the optics.

Works better with the adjustments. why does it seem that it is very infrequent that any winners are paid? Is there any way to change the odds?

Open the door and press the green test button nine times. You can watch it count to nine on the win meter.
Then write down the five repeating numbers in the win meter. All five sets of numbers will start with a 9.
Post the numbers and I can look it up and tell you what % payback chip you have.
Only way to upgrade the odds is to change to a better % payout chip.