Edit - Solved! Bad shift registers were the cause. Still looking for schematics, though.

Rasputin wrote:Here's another quite hard to find:
Yamaha FS1R Service Manual including Schematics...
https://drive.google.com/open?id=0B5VDu ... ktwcENNREk
Rasputin wrote:Ensoniq VFX, VFX-SD, SD-1:
Service Manual
https://drive.google.com/open?id=0B44NK ... WRGdjhickk
Ensoniq - Service Bulletin #13 (keyboard problems)
https://drive.google.com/open?id=0B44NK ... TN4akNNWkE
Schematics
https://drive.google.com/open?id=0B44NK ... DQtUF9JYWs
These are pretty hard to come by, so I'd archive them while they're available.
Lozzy_uk wrote:I was hoping to lookup the vol & data slider pot values in order to replace mine, unless I missed it??
Rasputin wrote:As far as I can remember, it should be a 10k linear (sometimes called type 'B') slide potentiometer. Should be 60mm long with a 15mm shaft and 45mm travel. The Volume and Data pots should be the same.
But it's simple enough to double-check all this yourself. Not really something needing schematics, a ruler and multimeter would suffice.
ʝɵʝɵ wrote:Anyone got the Kurzweil K2500 service manual? It's on Scribd but I don't see why I should be paying for downloading a document that doesn't even belong to them.
czery wrote:Does anyone have the schematic / service manual for the original E-Mu Proteus 1 / 2 sound module? I guess there's not much interest in this kind of "obsolete" sampler technology.
Rasputin wrote:czery wrote:Does anyone have the schematic / service manual for the original E-Mu Proteus 1 / 2 sound module? I guess there's not much interest in this kind of "obsolete" sampler technology.
http://www.musicparts.com/products.asp?Company=E-Mu
The good news is it exists. The bad news is that it's not "in the wild", so to speak. I tried to organize a group buy for items like this, but... well, you know.
czery wrote:That being said, I am extremely disappointed how a few individuals have decided to not only withhold said information and even put up pay-walls to access information to what I think should be made publicly available. In the case of the Proteus 1 - E-mu is no longer servicing these synths and I doubt E-mu has any important intellectual property vested in the operation of its obsolete 80s sampling technology. I cannot find a good reason for such a service manual to be withheld.
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