Where to power coin door lights from Jamma machine

[redfivexw]

Hi everyone,
i just converted an old Atari Xevious to Jamma.  I wired everything up and it all works, but i did not know where i should pull power for the coin door lights and the "1 player, 2 player" light up buttons.  If anyone could tell me where that power should be connected i would appreciate it. I used an old neo geo power supply and wiring to make the conversion but lost track of the coin door power...

[SirPeale]

From the 12V connection, of course!

[RayB]

WHOA, stop stop!!

Peale's advice only applies to the coin door lights. As for the Atari Start buttons, they are likely 2v bulbs and you really shold power them off the same lines that the original board uses. Remember, the game flashes them when you insert coins, so you can't just go and light them up so they are always on. Do it right. Check schematics and find the board outputs that control those lights!

[SirPeale]

Peale's advice only applies to the coin door lights.

True enough.  I missed the part about the buttons.

As for the Atari Start buttons, they are likely 2v bulbs and you really shold power them off the same lines that the original board uses. Remember, the game flashes them when you insert coins, so you can't just go and light them up so they are always on. Do it right. Check schematics and find the board outputs that control those lights!

He converted it to JAMMA, so there likely wouldn't be a board that supports it.  Unless he wants them on all the time, then he could get it from the +5V and a resistor.

[SirPoonga]

The lights are outputs from the board.
http://coinop.org/kb_dl.aspx/KB/pinouts/xevious.txt
Run U and 17 directly to the LEDs instead of through the hardness.

I assume to convert to jamma you are just going to take the original harness and wire it to a jamma fingerboard.  So for U and 17, they still go directly to the LEDs.

Replace U and 17 with 4 and D if the bottom wiring on that page is used.


Basically, whatever wire is currently going to the leds from the factory harness do not cut.  You are just going to use that.  You are converting the wires that are meaningful to jamma to the jamma fingerboard.

Wait, I got it backwards, don't I.  You are taking a cabinet and making it jamma, not the game to jamma.

If you want them to just light up constantly, as that is all you can do, then find a 5v line and knock it down to 2-3.3V

[RayB]

Ahhhhh! I misunderstood. So the cab is Xevious, but it will no longer be running Xevious?

[redfivexw]

thanks for the replys.  I took the xevious board out of it, and pulled all the original power supply and wiring out, and put in a jamma harness, power supply, etc from a neo geo.  I currenly have a Galaga 88 jamma board installed.  I will probobly not be re-installing the xevious board unless i can make/buy a xevious to jamma adapter.  So i understand that the coin doors lights need 12volt, but i did not know where to grab it from, do i run from the 12volt wire coming from the jamma plug (where the game board goes in) or directly from the power supply?  I would not mind if the 1-2 player lights light up all the time, so should i run the 5volt line to that?  I am unsure, and will wait for one of you to tell me what to do before i try it.  please help

[redfivexw]

Also, i am not really familiar with the concept of knocking down the 5volt to 3 volts, do i go to radio shack and buy a resistor and wire it in between?  Also, can i just tap power off an existing 12volt and 5 volt line that is already going somewhere else, or do i need a dedicated line?

[RayB]

I THINK you can run it off straight from the power supply (AFTER the fuses--you did put in fuses right?)

For the Atari, you need 330 ohm resistors.

[redfivexw]

Yes, all the fuses are there, i was thinking of putting them in there, but isnt that 110 volts?  the wires that come off of that go straight to the switching power supply and the marquee lights, i think i would need to run it from the power supply as the power is less.  Where do i get the resistor, is it a radio shack item?

[Q*Bert_OP]

yes

[RayB]

Can someone find that Bob Roberts wiring diagram? I can't find it. OH wait, I think I have it. Hopefully it will attach to this post...

Yes, all the fuses are there, i was thinking of putting them in there, but isnt that 110 volts?

If your cabinet was wired correctly there should be one main fuse along the 110/120v line, like you mentioned, but also a fuse on each of the outputs from the switcher. Not all cabinets will have this though. I had one JAMMA cab with spaghetti wiring inside and only the one fuse like you have.

the wires that come off of that go straight to the switching power supply and the marquee lights, i think i would need to run it from the power supply as the power is less.

[SirPeale]

Here's my edited version, you can extrapolate the PC cord to the arcade power supply easily.

[redfivexw]

thank you for the help, i will do as you say, how do i know if the coin doors are 12v or 6v? 

[RayB]

thank you for the help, i will do as you say, how do i know if the coin doors are 12v or 6v?

[SirPeale]

The JAMMA standard is for the coin door lights to run off 12V.