> I have the service manual that covers the 1500-only board, and the
combined 1500/1510/1520 board. If you are trying to fix a terminal, you
will find it very helpful, as it has troubleshooting flowcharts, theory of
operation, etc. I will be happy to send you a copy, and also will place a
copy on osiweb.org.
> There's also a copy of the user manual on classiccmp, that may be useful
for switch settings.
> I don't know if my Hazeltine works or not--with a new baby, I haven't had
much time for my hobbies, and it's in storage. It is "in the queue".
However, I can't imagine it will be too difficult to bring it up.
> BTW, It might be nice to preserve (and host online) the 1500 and 1510
firmware, and the 1520 firmware as well, if anyone has one of those.
Sorry, I did not realize you were the OSI Dave...In exchange I will send
you Vol 4.8 and Vol 4.12 of PEEK.