You can buy a service manual from www.mellotron.com which has schematics.
However when I used them to fix my preamp i found the schematic i needed
had several errors.
There is also a Owners Manual which, I assume by the name, must have come
with the unit. It also has some block diagrams and schematics and is
worth having if you can track one down. I bought a copy on ebay (i just
didn't think the guy meant a PHOTOcopy).
-jim/m400#680
>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