I have scanned now one binder containing blueprints/schematics for the
HP 9810 and 9820. There may be more hidden somewhere in the archives. I'll
scan that, too, when I find them. I hope that I also have schematics
for the 9830.
For now, they are mostly single page TIFF images; multi-page parts are
packed into PDFs. As usual, they can be found on our FTP site:
ftp://computermuseum.informatik.uni-stuttgart.de/hp/98xx/
Enjoy ;-)
Christian