I got an email from Jeff Stonestreet the other day with an attached schematic.<br>
"Attached is a schematic I created for the Casio SA-7 keyboard. I am working on a microprocessor-controlled sound generator and plan on using the SA-7 for parts. I got frustrated trying to figure out how the thing was wired, so I finally spent about a week carefully mapping every circuit board trace.
Maybe the schematic will save others the same frustration!"
<a href="http://casperelectronics.com/images/finishedpieces/Casio SA/schematic.JPG"><img src="http://casperelectronics.com/images/finishedpieces/Casio SA/_schematic.JPG" width="400" height="283" alt="" title=""  /></a><br>
<strong>Thanks Jeff!</strong><p>
More info on modding the Casio SA keyboards can be found <a href="http://casperelectronics.com/finished-pieces/casio-sa-keyboards/">here</a>