Hello,
the io-30 seems te replace the io-12
maybe you can try that manual at this site below.
http://www.nostalgickitscentral.com/...ucts/test.html
"Michael Breeman" schreef in
bericht ...
Require a complete service/construction manual for a Heathkit IO-30
Oscilloscope. Also interested in a 5BP1 crt for this instrument, must be
in VGC and both will be required to be posted to Australia.
--
Michael Breeman