Vintage Synth Repair

I'm new here just wanted to say hi and ask for a little help. 

I have a Moog OPUS 3 Model # 339A and I need a schematic. 
I did find a site that had a manuel for this 339A 
but they never returned my e-mail which I asked if it 
had a schematic so I didn't want to spend money 
for something that wasn't what I needed or 
worst yet not to receive anything at all.

Hope someone can help.

Best Regards,

RockTheNight