Sega-Naomi

Hey guys,

I'm still learning about the Naomi. I wanted to know what the recommended voltage settings are for use on the New Astro Cab?



Here's my setup:

New Astro Cab

Naomi 1 Mobo

Capcom I/O



I got CvS working but when I play Power Stone, the game would freeze up. After looking around I realized that I had to turn up the juice so i did slightly. My question is whats the safest level to have it at? Will the settings be the same when I ad a Dimm Board and GD-Rom unit? I know that the GD-Rom will require another PSU. But will the voltage still need to be turned up and how much?



Just trying to be safe and not burn my apt down. Thanks guys!

This is a difference between the processing power needed between 2D and 3D games. Games like Power Stone that are completely in 3D require more system power. That's the reason for your problems.



The good news is that once you adjust the power for stable 3D play, everything else will play fine.

This is the exact same problem for me! Same setup.



How much can I juice up my astro city cab? I have no voltage meter unfortunately.

multimeters are very cheap to buy and there is no excuse to not have one,it is the one most important tool i use every day and i have been in the arcade industry for 22 years

if you try to up your +5 without reading it you could overvolt to a degree where you damage logic

naomi mobo's like 5.10v at the filter board input plugs

+12 can be anything from 11.90 to 12.90

+3.3 should be spot on

How do you adjust the voltage?

well quite a few years since i worked on an astro city but i am sure there was a nice big potentiometer on the power supply housing unit



on naomi sun psu there are 2 pots on the front,one for +5 and another for +3.3



on a standard jamma switcher there is a +5 on the front top

Just bought a meter



Now I want to test, and since I'm a total n00b with those things: how do I use it to check the astro PSU...?



Is it AC or DC to check? I'm a total n00b