Question for people with a working Rastan PCB

DarrenF

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I'm working on a Rastan with issues (attract mode fine; hangs when a game is started).

I noticed that the jumper "JP5" is open (appears scratched/gouged on the PCB). Anyone have a working Rastan PCB? JP5 is located near the center of the board, beside IC43. Is this jumper open or closed on your PCB??
 
Damn, I can't find mine. Now I'm pissed...

Easy enough to locate one - just wheel a classic, horizontal game into the corner (Joust will do) and leave it there for a while without looking at it. Eventually, it'll convert itself to Rastan.

At least, that's the only explanation I can find for it. Same principal behind the proliferation of Arkanoid machines. Ignore a Kangaroo in a warehouse for long enough, and *poof!*. Arkanoid.

-Ian
 
Hehe.

The schematics show the jumper closed... but I'm becoming convinced that it should be open. Still hoping for a confirmation from someone with a working board.

I tried mine with the jumper open and closed:
- when closed the board resets periodically
- when open, it doesn't reset periodically.

My theory is that it's a watchdog enable/disable jumper, and that the Rastan code is not written to reset the watchdog timer... so when it's enabled, it resets constantly.

As an aside, I sumbled upon the information Rastan is supposed to have a little jumper-connector on the 4-pin "H" header. This is not evident AT ALL in the schems, and there is no wiring diagram as it's a JAMMA kit... Anyhow, it appears to supply 12V power to the coin processing custom SIP (PC050). So I built one and now I can coin it up normally (using the coin inputs, not just using the service credit input). But, it still hangs shortly thereafter... Oh, and I now have sound, but it's clearly not right. It's just looping some random sounding garbage every 8 or 10 secs. Something on the sound CPU side is clearly in the weeds...
 
It still pisses me off that i can't find my board. It's a Rastan Saga board, but should be the same...
 
Well I just checked mine for you. The jumper at JP5 has continuity at three points in a straight line and also the first jumper point (the one to the left if looking at board with the jamma edge connector facing you has continuity to pin 4 of the LS04 Ic chip. On another note the 4 pin H connector pin 1 and 2 are connected with white wire and pins 3 and 4 are connected by black wire. My board works perfect in my original taito cab.

It is an original Taito board too.
 
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Well I just checked mine for you. The jumper at JP5 has continuity at three points in a straight line and also the first jumper point (the one to the left if looking at board with the jamma edge connector facing you has continuity to pin 4 of the LS04 Ic chip. On another note the 4 pin H connector pin 1 and 2 are connected with white wire and pins 3 and 4 are connected by black wire. My board works perfect in my original taito cab.

It is an original Taito board too.

Thanks for checking your PCB.

I also found this ultra-high-res photo online:
http://arcade.ym2149.com/pcb/taito/rastan_pcb_partside.jpg
That one clearly shows the jumper cut.

So... now I have one piece of evidence for open, and one for closed...
Anyone care to weigh in with a tie-breaker??
 
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