Ms Pacman Daughter Board orientation

AtomicBomb

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Someone brought me a Ms Pacman board out of a Pacman Cabaret (conversion, probably why I'm having issues) to have a look at and I'm having a bit of trouble re-assembling it. My issue is with the daughter board attached via ribbon cable. They brought it to me detached, I'm not sure which way to plug it in and I'll explain why later. First of all, I had a look around the web, and this daughter board doesn't look like the majority of Ms pacman boards. The main board has midway printed on it and looks similar to photos on crazykong.com, so I don't think it's a bootleg, but the location and orientation of the processor and roms on my daughter card are different than pictures I could find.

So here's what's screwing me up: there's no real keying to tell me which way ribbon cable should plug into the daughter card and I was left with the ribbon cable still attached to the MoBo, and unplugged from the daughter card. The cable doesn't look to have any kinks or twists in it, leading me to believe that it was installed in a flat manner. Intuitive installation and the dust accumulation on the boards leads me to believe it was installed one way, but then the keying on the processor (which would be moved to the ribbon cable location) would suggest the other.

I've attached 3 pics. The first two are the ways that it COULD go. I believe it should go like picture #1, but then if you look at picture #3 closely, they key on processor slot on the MoBo and they key on the processor would be backwards in that case. If installed in a cabinet like #2, the dust accumulation (primarily on the top of the ICs) is wrong.

Any ideas?
 

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The orientation is correct in picture 1.
Another way to tell is lining up pin one on the surface mounted chips on each board.
The Daughter board is bootleg.
 
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That's what I thought, but with it oriented like that, pin 1 for every chip on the MoBo is on the right side, and pin 1 on the daughter is on the left. This is what was throwing me off. Maybe I'm not understanding exactly what you're saying. Either way, I'm not surprised the Daughter is a bootleg. Probably explains the strange configuration. Thanks for the info.
 
I'm thinking pic 2 might be right, but there is an easy way to tell:

When the Z80 is installed on the main board, the orientation is to the right on your pic. when installed onto the daughter board, it is orientated the same way as the chips on the daughter board. BUT - you should still have continuity between pin 1 on the Z80 main board socket and pin 1 on the Z80 daughter-board socket. If you don't, then it's not plugged in right...
 
Thankfully I haven't powered it up so nothing SHOULD be toasted yet. The guy who gave it to me said it was running fine one day, then there was garbage on the screen the next. Found that some of the eprom pins were pretty black, and one of the ground pins was broken when I pulled it, so hopefully a cleaning and a jumper will do it. Continuity is a good idea Mod, I'll give that a shot. If I do toast an eprom, I'll probably just roll it back to a Pacman or go looking for a genuine daughter board.
 
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