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I have been looking for another UBA for one of my Alphas for months now. Price has been the main issue so today I decided to install a WBA 13 SS that I had from an IGT S2000. I removed the UBA frame from the Alpha and installed the WBA frame. I noticed that they both use the same 20 pin connector, but left in the one that the machine was originally using with the UBA frame. (p/n #CBL-31034-0001)
All other parts swapped over fine and I installed a ID-0003 V3.75-32 4 mb chip in the WBA-13.
Powered up the machine but it does not recognize the WBA and I get the Comm Error on the machine. The machine is set-up in settings for the JCM Bill Val but it still will not recognize.
Next I removed the interface harness from the original one from the Alpha to the one from the IGT frame thinking this might be the issue.
I still get the Bill Comm error and the WBA will not cycle. The two red led's are illuminated on the CPU board of the WBA and all the switches are off.

The game will play since it still has credits on it from when it was set-up with the UBA but it will not accept bills with the current comm error.
I would think that it would not need a RAM clear since the setting will be that same and I'm still using a JCM product.

Hi Neonkiss, no need to RAM Clear, UBA to WBA is not the issue with game settings

Your issue is with the WBA, you need the additional RS232 Comm Board that mounts on the side of the WBA, without this you will always receive the Comm Error

Harp

I agree.   :212-

Thanks,
Now where do I get a Comm Board or a UBA?


Ford, do you have a picture of this board?

Quick Google search and I think I found a picture of one?

What is the pinout and do I need additional harnesses?

No Additional Harness' remove the connector from the WBA CPU and pull the Harness back, the Comm Board installs directly into the CPU then the original Harness installs into the RS232 Board

If I can find a picture I will post

Sorry, I got busy & did not get back to you. Here is picture with it installed.

Oh, WoW,
In all my years I have never seen such an animal.
I'm on the hunt.  :299-
Anyone know where to find one?

I got some about a month or 2 ago. When my computer crashed I lost info. where I got them. Check with Coorslight, that is who told me where to get them. Maybe he remembers where I got them. I know it was a member on NLG.

I think it was  American Gaming

Here you go.
http://www.americangaminginc.com/products/products.asp?ItemId=98643 (http://www.americangaminginc.com/products/products.asp?ItemId=98643)

Thanks Ford. I'll look into it.
 :3- :3- :3-

These are new. Some used ones I found they wanted more $'s for.

Hi guys,
you can make same effect with home made small board, one   MAX232 chip or equivalent one, five caps and problem fixed for couple dollars!
Scheme is on MAX232 chip datasheet.
Regards Goran

good to know. used ones got hard to find

I am use this on Novomatic machines to connect Mei acceptor to machine. I am make 10 this boards and save around 400 EURO which novomatic ask for that.
that working around 2 years with out of any problem!