[SOLVED] NAMCO SYSTEM 1 ROM 5 ERROR

[sk8er000]

Hello,
Today I've received my Namco System 1 Galaga88 that I was planning to use for @Darksoft multi. I've played a bit the game and seems to run fine but id I set the DIP 1 to on and press the TEST button on the HAS the self TEST reports "ROM NO.5 ERROR" followed by "B0FF 0000 0000 0000".
The test doesn't go further.
I'd like to know if there is a way to go further with the test and what kind of eprom can I use to try to swap this rom (that from the manual seems to be P10).

I hope that if it's only a corrupted rom I still can use the board for the multi

Thank you in advance

 

[Darksoft]

I'm not sure but it says ROM, not RAM, so that probably should fix it.

 

[sk8er000]

Found the issue!
Examining the PCB JP3 had the center pin broken, it was an easy fix to swap it with a new one

Now the self test goes through as expected

 

[Darksoft]

Congrats!

 

[sk8er000]

Now I'm ready for the multi

 

[RandomRetro]

Found the issue!
Examining the PCB JP3 had the center pin broken, it was an easy fix to swap it with a new one

Now the self test goes through as expected

Any clue what that jumper is for?

 

[sk8er000]

Found the issue!
Examining the PCB JP3 had the center pin broken, it was an easy fix to swap it with a new one

Now the self test goes through as expected

Any clue what that jumper is for?

Yes, here's the purpose of each jumper

 

[RandomRetro]

Thanks @sk8er000. Any translation on those ROM columns?

 

[sk8er000]

I can translate them from japanese:

ピン数 (pinsuu) = Pin number
容量 (youryou) = Capacity
種類 (shurui) = Type
例 (rei) = Example

 

[RandomRetro]

Thanks @sk8er000. I may have to post of picture of my board for help to make sure my jumpers are right. I have no audio and need to put it on the bench and start probing...