Links to both:
http://www.ebay.com/itm/222347218541?ssPageName=STRK:MEDWX:IT&_trksid=p3984.m1435.l2649
http://www.ebay.com/itm/222347220595?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Well, the service manual includes original schematic, I believe the schematics available publicly were reverse engineered by Wayne upon the rev 2A.