Astro City Cab Questions - Sega Naomi setup - Nanao MS29 Monitor

bongoben

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Astro City Cab Questions - Sega Naomi setup - Nanao MS8-29 Monitor

Alright, I just picked up an Astro City cab from Alejandromad this past weekend. I have gutted the cab of the wiring harness that was inside as I was planning on dropping in my Sega Naomi setup. The first question I have is regarding power. The power supply mounted to the back of the cab outputs to all of it's own connectors for whatever game was previously in this cab. The Sega Naomi setup uses a computer type power supply so I didn't think I would need to use the power supply mounted to the cab. But, the Nanao monitor is the 100V version. How would I go about getting the 100V for the monitor but still use the Naomi power supply for the game? Should I leave the Astro City power supply mounted to the cab strictly to run power to the monitor but then patch in to grab the 120V to go to the Naomi power supply or am I overthinking this?
 
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Channelmaniac is hooking me up with a 100v step down transformer for the monitor power. So that is figured out. I'll just wire that in after the on/off switch in the cab so it turns on when the game turns on. I'm sure I'll have other questions with this cab as the Naomi setup is totally foreign to me so I'll bump it as needed later.

Potential questions that may be answered in the pdf manuals I have but I haven't had a chance to look yet much less to work on the cab any more... so the two questions below are kind of pending further investigation right now:
-Can I patch the RCA audio coming out of the little pcb straight to the speaker molex connectors?
-Since I'm not going to be using the computer video out cord to hook it up to an lcd monitor (like I did to test the setup) do I take the game's video signal off of the jamma connector?
 
You should do a little reading up on this thing called "JVS". It's the successor to JAMMA but came out after the arcade crash so it never gained traction stateside. That's what your Astro City is set up for and you can connect a Naomi directly to it, no JAMMA needed. Basically, you need that little I/O card in your cabinet, it's set up specific to that cabinet, and replaces the Naomi JAMMA interface board.
 
You should do a little reading up on this thing called "JVS". It's the successor to JAMMA but came out after the arcade crash so it never gained traction stateside. That's what your Astro City is set up for and you can connect a Naomi directly to it, no JAMMA needed. Basically, you need that little I/O card in your cabinet, it's set up specific to that cabinet, and replaces the Naomi JAMMA interface board.

Thanks for the kick in the butt to actually do some research. I think my problem is that Naomi was introduced to me as a simple drop-in setup into the Astro City cab... but when you get down to it, with all of the different parts, it's a headache. I found a few great write-ups on the Sega Naomi forums which I'll spend some time with after work. I currently have the Naomi Jamma interface board but I'll see if I can find one of the JVS I/O pcbs. But with the Naomi Jamma interface board it is possible to have the controls, audio (from audio amp), and monitor feeds run through the jamma harness and that's it, yes? Power would come from the Naomi power supply. So feeding the monitor send, audio send, and the controls over to the Jamma I/O pcb would take care of the rest, yes? It sounds like the JVS I/O is easier... but the Jamma I/O is useable.
 
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Thanks for the kick in the butt to actually do some research. I think my problem is that Naomi was introduced to me as a simple drop-in setup into the Astro City cab... but when you get down to it, with all of the different parts, it's a headache. I found a few great write-ups on the Sega Naomi forums which I'll spend some time with after work. I currently have the Naomi Jamma interface board but I'll see if I can find one of the JVS I/O pcbs. But with the Naomi Jamma interface board it is possible to have the controls and monitor feeds run through the jamma harness and that's it, yes? Audio would come directly from the audio amp pcb to the speakers. Power would come from the Naomi power supply. So feeding the monitor send and the controls over to the Jamma I/O pcb would take care of the rest, yes? It sounds like the JVS I/O is easier... but the Jamma I/O is useable.

It shouldn't be a headache... as long as your cabinet is wired correctly it should be as simple as six connectors that plug right into the Naomi: two power connectors, two RCA audio connectors, the JVS input cable (looks like USB but isn't), and a DE15 (think "VGA connector") for the video (some really, really new stuff uses DVI or HDMI instead but we won't get into that here). Not sure why you want to mutilate the cabinet wiring... familiarity? Missing a cable somewhere?

This picture shows pretty well what I'm talking about. You can see the RCA audio connections and the DE15 video connector and power connectors are just to the right of it. The JVS controls connector is on the same panel but a ways off to the left -- that gray cable. Your cabinet is supposed to have all of these ready to go.
 
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It shouldn't be a headache... as long as your cabinet is wired correctly it should be as simple as six connectors that plug right into the Naomi: two power connectors, two RCA audio connectors, the JVS input cable (looks like USB but isn't), and a DE15 (think "VGA connector") for the video (some really, really new stuff uses DVI or HDMI instead but we won't get into that here). Not sure why you want to mutilate the cabinet wiring... familiarity? Missing a cable somewhere?

This picture shows pretty well what I'm talking about. You can see the RCA audio connections and the DE15 video connector and power connectors are just to the right of it. The JVS controls connector is on the same panel but a ways off to the left -- that gray cable. Your cabinet is supposed to have all of these ready to go.

Right on. I appreciate the help with this. The wiring that I got with my Monkey Ball kit was a hacked up mess. I've sorted that out and have removed about half of what was there... I'm still not sure what any of it was for. The harness in the Astro City cab seemed to be complete but that is all that was in the cabinet (besides monitor and cp). I didn't realize this JVS I/O was even an option until you brought it up so I was just going to try to use what was in front of me. I have no intention of hacking the wire harness up at all if I don't have to and I guess I just need to find a JVS pcb and go from there. Should probably get back to work and I will spend some time with all of this in the next few days.
 
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