I am new here, been reading these forums for ages tho. Last week I bought a naomi system with a Sega Jamma I/O board, which turns out is the A type board that requires a coin counter to run.
I am trying to diagnose why there is no power to any of the unit, psu, anything. I have a couple of questions:
1. The stock psu is wired like this by me today:
![Image](http://img.photobucket.com/albums/v321/mikeosoft/naomi%20universal/IMG_20110315_154657.jpg)
Should the psu power up without anything besides power being supplied? E.G. no naomi board plugged in? I've tried this and nothing.
2. Is there some pins I can short to enable the psu to "on" position? kinda like shorting out two pins on an atx psu to make it stay on when power plug is plugged in?
3. There is a jumper seen here:
![Image](http://img.photobucket.com/albums/v321/mikeosoft/naomi%20universal/IMG_20110315_154725.jpg)
What is this for? I assumed it was to assign where 5 volts comes from, e.g. psu or jamma harness, if so which setting is what?
4. I did a search for wiring the coin counter/coin stuff in the jamma io baord, but andy's response was a few links which are no longer available. Does anyone have working links on how to either solder to sega jamma IO A board to disable coincounter or how to wire one up??
Also thanks for this awesome naomi site, and you dudes rock. [/img]