Vintage Synth Repair

I just started work on a Roland SH1000, and I'm looking for service 
documents or schematics - unsuccesfully so far. 

What I would need in specifics is a 
- Connection diagram for the top panel 
- The full name/characteristics on the transistors marked "C373" 
and "A733/Q265"
- An educated guess on where to start when it did produce sounds 
recently, but now sports a dead (replaced to no avail) fuse and 
absolute silence

Hope you can help - I seem unable to track down anything with Google 
these days, and I couldn't find much in the list archives.


-Mu