Xmen/Captain America Jamma Pinout Help

ddonaldson

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I'm a bit confused. JAMMA supposed to be universal, no?

I have a cab with an NBA Jam JAMMA+ wiring harness (is that the right term?). It works with NBA Jam, Blitz and Open Ice. Everything works except the "tilt" switch on the coin door.

I plug in a verified working xmen PCB, but I get no sound, the test switch doesn't work, and the coin slots don't work. (the caps on the sound chip PCB look perfectly fine, i know they are prone to leakage) This one has a test button the PCB, so I can activate the test screen. All the controls are being registered.

I plugged in a verified working Captain America PCB, and again coin slots and test switch don't work. I do have sound tho!

I looked at the Jamma connector I have, and it appears that everything pinout is wired.

Am i missing something? I appreciate any advice!

Thanks,

Dan
 
I'm sorry, I should have been more clear. The cabinet is a converted NBA Jam to an NHL Open Ice Challenge, which does not have a seperate sound board.

But you're correct, the NBA Jam TE does have a separate sound board.
 
Well I changed all the dip switches to think it's in a 2 player cabinet with 2 coin mechs, but no luck.

My Jamma connector doesn't have any ground wires in the #27 as illustrated here:

http://www.jammaboards.com/jcenter_jamma_pinout.html

I can just splice in off another ground wire? Would the lack of this wire cause the coin slots to stop working?

Thanks again
Not having a ground at pin 27 of the JAMMA harness isn't necessarily a problem. Many JAMMA harnesses aren't fully populated. As long as the coin switch has a ground from the JAMMA harness and its coin 1 or coin 2 from the JAMMA harness, that's fine.

So if you try to play NBA Jam or Open ice the coin switches work fine, but not with X-Men or Captain America? If so that seem very odd and looks like the X-Men and Captain America boards have problems. Do you have another cabinet or someone nearby that could test the boards?

As for the X-Men sound issue, that pcb has 2 ways to output sound. One is from a separate 4 pin connector for stereo sound and the other is right from the JAMMA harness for mono sound. Go into the test menu and under the game or sound options make sure it's set to mono and not stereo. Hopefully that gets your sound up and running.
 
Thanks a lot for the help!

I was thinking, and said..maybe I can wire up a switch using the pin out on the Captain America board. Wires 1 is the coin, and 16 is the ground. I used my monitor discharge cable to ground, then made a connection - coin! coin!

I made another jumper short and the game started.

So I plugged in the player in 3 controls. Up was left, down was jump, punch was right...wth!? Why? The pin out for the player 3 and 4 controls are completely different.

I changed all the dip switch settings back to a 2 player game, and I still couldn't get it to see my normal 2 coin slots.

Now I don't know if this is common on a lot of midway cabinets, but inside the coin door there is a test switch, a volume pot and a credit button. None of them worked. Could they be preventing this?

I'm wondering if I just buy a brand new complete Jamma wiring harness (where everything is wired) would it work?

Thanks again.
 
Doing more research revealed that the pin outs for players 3 and 4 for X-men and Captain America are completely different than the pin outs for Midway sports games (Blitz, NBA Jam, Open Ice).

Now the final question: Does anyone sell the 15 pin connector as shown here? Bob Roberts maybe? Does anyone know the correct name for the 15 pin molex?

Capcom_Harness_314x172.jpg


I'd like to get a few so I can make some custom Midway to Konami player 3/4 conversion harnesses.

Thanks again!
 
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