Vintage Synth Repair

Yes, I have aquired one of these and it needs surgery.  Unfortunately
I don't have a road map for it so I was hoping one of you out in
Cyberland might have a service manual for it.  Electronic (.pdf)
format is fine.  I can trade for it if you like as I have a large
collection of manuals.  Or, if it's cheap, I can, *sigh*, buy it. 
Anyway email me at XXXXtransanalogXXXX@....  <-----(remove the
X's)  Thanks!