Hey Xela, If you can't get the schematics from the internet fraternity, Barco bought EMT and supposedly have all the documentation: http://www.barco.com/
People tell me Barco are a pain to deal with, so I would try and find them elsewhere first.
You could also try:
http://www.danalexanderaudio.com/
http://www.emt-studiotechnik.de/
http://www.hestudiotechnik.de/
Hope this helps!
Justin