Sega-Naomi

Posted: **Tue Jul 22, 2008 3:46 pm**

Hello everybody... :smt006 I am new on this forum. I have to admit that I don't know much about arcade systems. I do know very much about pinball machines however. So if you have any questions about those... shoot

I recently bought a naomi2 GD Rom system, with a game Virtua Fighter 4 in it. Since yesterday the system won't start anymore...

This is what happens :

I switch on the game.

The system starts loading and counts till 100%.

Than it starts checking memory till 100%.

Then it says (and here it goes wrong...) rebooting in 2 sec.

The screen turns black... the naomi2 bouncing image appears again...

Screen turns black again and then shows the message " I/O BD is not connected to naomi BD".

I cannot enter in test, I can do nothing...

Who can help me to solve this ??

Thanks,

Lieven

www.silverballgames.com

Posted: **Tue Jul 22, 2008 4:23 pm**

:smt006

check the cord that connects your NAOMI board to the I/O it's probably loose. :smt020

Posted: **Tue Jul 22, 2008 4:28 pm**

Can anyone post a picture of this "I/O to naomi" connector ??

I checked all visible connectors and couldn't find any loose ones.

Posted: **Wed Jul 23, 2008 1:57 am**

The 2 connectors necessary for the Naomi setup are:

1) The power connector (looks like a floppy drive power connector)

2) The USB connector from the I/O to the Naomi filter board (near the test button)

If either of these is disconnected, or the I/O is busted, then you will get this message.

Posted: **Wed Jul 23, 2008 3:31 pm**

All connectors seem to be ok and in position.

On the I/O board (behind the test buttons) I have 2 leds colored red. Is that ok ??

Posted: **Wed Jul 23, 2008 3:58 pm**

It's as if the GD ROM drive spins like crazy after he gave the reboot message, which appears for only 2sec. ... then the screen turns black and the I/O BD message appears.

The problems started simply when the game was in attract mode... so nobody pulled any wiring or cables ...

Please help ... :smt010

Posted: **Wed Jul 23, 2008 4:23 pm**

Can you post a picture of your setup? A good image might help.

Posted: **Wed Jul 23, 2008 4:49 pm**

Here are some pics ... :

Regards,

Lieven

Posted: **Wed Jul 23, 2008 6:58 pm**

on your IO board, move the 2 small white plug connectors to the outer edges of the boards (im not near my cab so do not know what they are called) but they might help? I know on my cab they are on the outer edges of the IO, not sure what difference it makes thou???????

Posted: **Wed Jul 23, 2008 11:04 pm**

silverballgames wrote:Here are some pics ... :

Regards,

Lieven

Yep, I'm jealous! Naomi 2 GD rom setup in a Uni cab with VS3?

Gimme!!

Sega-Naomi

Naomi2 - I/O board error

Naomi2 - I/O board error