[sdiy] Buchla schematics in general

[Magnus Danielson]

Grant Richter wrote:
> On many 200 series modules (if not most) there is additional circuitry 
> added to the PCB board that is not shown on the schematic.
> 
> "Bug fixes" like this are common in short run manufacturing.
> 
> Sometimes resistor values changed, stuff like that.
> 
> Don is as better than most professionals at back annotating this kind of 
> stuff.
> 
> Make sure you look over the whole schematic sheet for notes like: R14 > 
> 68K DB 8/72
> 
> Spelled out that means "R14 was increased to 68K by Don Buchla in August 
> of 1972"
> 
> Sometimes there is a little note with a reason, like "fixes problem SFC".
> 
> Which means somebody at the San Francisco Conservatory noticed something.
> 
> Many times the notes are on the drawing margins which may have been 
> cropped when scanned.
> 
> It is a paper database, you know from before the things with keyboards.
> 
> It is remarkably complete and well maintained compared to most 
> industrial messes from that era.

Most of the scans I have put up is from papercopies I have received and 
scanned. Since my scanner has restricted surface area and I didn't have 
proper tools to glue scans together, I scanned the pages in one run, but 
tried to make sure I got it all, in which case I scanned the pages 
offset such that completeness could be achieved.

I would be happy to scan from better sources and to maintain better 
quality. Back when I did it I was severly limited by space of that 
account, so I targeted for best quality per kB without doing too much 
processing (none infact).

If only someone supplies me with the material, I do have a site for it!

Cheers,
Magnus