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Help me with my Jamma Cabinet
lettuce:
If you could give a better explanation Alan that would be great, heres some more close up pictures
and the unknow circuit broad, the wires you see running down the right side of the broad are not connected to anything they are just cable tied up!
RayB:
Alan's comments were wrong...!
In your most recent photo... the BIG thing is the Isolation Transformer, and as I already said, the monitor is powered through that!
The part that says 5a, 2a, etc are FUSES. (Lift up the cardboard while you have the power off and you will see 3 fuses).
The small silver box is an AC power filter. It ensures that voltage is "clean" and doesn't have interference / noise on it.
The power switch.... Is a power switch. ::)
The board though is a mystery. I am tempted to say it's an audio board or amp. Can you trace the wires off it and ensure NONE are connected? None going to the speakers? I don't know what it is. It's not a standard JAMMA part, which means you can chuck it. You don't need it.
~Ray
lettuce:
I think the wires do go to the speakers, ill have to double check tomorrow, there are 3 speakers in the cab in total left, right, and one placed in a box, much like a sub i guess!
So i can remove the Fuses box, and the power supply, and keep the rest in? If i remove the power supply where does the iso transformer draw its power from?, is it wired straight to the wire that goes to the plug that plugs into the wall socket?
As looking at this picture,
it looks like the power supply is only connected via the 12v, -5v, gnd, gnd, 5v, FG, AC, AC wires, i cant see any wires going in to the power supply to actually power it. I'll have to have a good look tomorrow!
lettuce:
Is there only surpossed to be one cable from the ISO transfomer going to the monitor??? As i have followed the wires from the ISO transfomer and the only one that seems to go off to the monitor is the wire labeled 0 v?? Ive draw a rough diagram
As you can see on the right had side of the ISO trans, the black wired that is labeled 0 V, seems to head off to the monitor, the other black wire labeled 120 v goes to the terminal marked 3A on the fuse box, the 120 v terminal isnt wired to anything. On the left hand side of the ISO trans, the Blue wire labeled 0v, does to the top left terminal of the AC Power Filter. The brown wire goes to the Power supply (which ive removed completely) terminal labeled AC. THe 220 v terminal isnt wired to anything.
So is this all right? Can i remove all the other wires from the ISO Transfomer apart from the wire that does to the monitor, or do i have to keep all the other wires attached to where they go? As i though i could completely remove every thing apart from the ISO transfomer?
I also notice that there was a Blue, yellow, black, and 2 red wires that were attached to the Power supply that go up the back of the cabinet somewhere, are these wires for the coin mech? As now they are not attach to the power supply anymore, their nothing to do with the monitor are they? This is how these wires where attached to the power supply
Blue -----
lettuce:
Anybody?
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