Mellotronists

As I mentioned in a previous post, I just finished pulling everything 
out of my recently acquired M400 #380.  While the cabinet is being 
refinished, I thought I'd go through all of the electrical and 
mechanical components.

When I got the instrument, it came with nothing other than the power 
cord.  No documentation or manuals of any kind.  Can someone tell me 
what's out there in the way of schematics and/or wiring diagrams?  
I've seen mention of this kind of documentation on some of the recent 
eBay auctions, so I assume that there is something "official", but 
I'd even be interested in owner-generated diagrams.

Specifically, are there schmatics available of the power supply or 
motor controller?  What documentation came with the original 
instrument?

Thanks,

-Jamie Robertson
www.robertsonics.com