Ikari Warriors schematics

I've been looking for years, and I've never seen schematics for Ikari Warriors, only a manual.

I, too, would very much like to find a copy of them, paper or digital.

Is there any particular problem you're having with IW? I managed to fix mine w/o the schems, and more recently developed a freeplay/highscore save mod for the JAMMA version...
 
Hello!

I'm about to receive some faulty Ikari pcbs and I'm just doing my home work before they arrive.

Did you ever see this thread?
http://forums.arcade-museum.com/showthread.php?t=219643&highlight=ikari+schematics

...in there is a "Ikari warriors schematic package Video Snk".

Would you think that's an indication the schematics do exist? Not sure to whom it was sold to, it seemed to have been advertised here and on eBay. If all else fails I might nag TNT again and see if they have another copy.
 
Nope, never saw that FS post, or I'm sure I would have taken a chance and paid $9.

Sounds kind of promising. If I ever get a paper copy, I'll certainly scan them at work and submit to arcarc.xmission.com

To get you started when you get your boards, here are a few IW tips:

-it's a 3-board set, so be cure to check to the ribbon cable interconnects; remove and replace them, look for damage, jiggle them to see if problems change, etc.

-also related to the 3-board set, check voltage on ICs on the bottom board and bump up your voltage (not exceeding 5.25 on the top board). There can be significant drop from the top board to the bottom. There are seperate 2-wire power interconnects.

-there is a poorly-documented self-test mode. Hole the PL1 start button during the power on cycle to enter self test, then press a button (i forget which) to cycle thru the tests.

-if you're having intermittent issues that don't respond to voltage correction, suspect bad RAM. I had to replace almost every RAM IC on my boardset before fixing some weird intermittent gfx issues on mine.

-of course, before breaking out any soldering iron, carefully check for physical damage (burned components, damaged traces, EPROMs inserted backwards, etc, etc)
 
wow, i didn't know about the self test.

i have in my own collection the jamma version of ikari warriors. do you know if the bottom 2 boards are common in both 44pin and 56pin versions? so in theory i can swap them out to see if they are the cause of the faults?

thanks for your input! for sure if i locate a hard copy i will get them scanned and share.
 
Don't get too excited about self-test mode, it's really not exceptionally useful. It has some monitor test patterns, an input test, a gfx test of some sort, and a sound test. In theory, even w/o test mode it does a RAM and ROM test every time it boots up. But I know for a fact the ROM check is very limited. I haven't followed the code for the RAM check, but I expect it's pretty limited too.

I do believe that both versions of IW use the same middle and bottom boards. I think the JAMMA version of IW actually uses a Victory Road top board, and of course different code ROMs. I'd be curious to hear what SNK part numbers you've got on each of your 3 PCBs in your JAMMA IW set. I'll pull mine out tomorrow and post them as well.

wow, i didn't know about the self test.

i have in my own collection the jamma version of ikari warriors. do you know if the bottom 2 boards are common in both 44pin and 56pin versions? so in theory i can swap them out to see if they are the cause of the faults?

thanks for your input! for sure if i locate a hard copy i will get them scanned and share.
 
I tried out the test mode in MAME. as noted, hold P1 start when turning the game on to enter (it will start at a blue crosshatch screen). to go between different tests you hold either of the P1 buttons and press P1 start. it's good for the input and dipswitch tests I guess, or if you want to play the game music. use the P2 start to exit.

the ram/rom check has nothing to do with it, as that's done on power up anyway, making it not really a "self test" at all.
 
Back
Top Bottom