6 Nov
2005
6 Nov
'05
8:29 p.m.
Hi,
For the 7970 tape drive there ARE the
full schematics on bitsavers... So
I think it should be possible to get the complete 7978B docs, too.
I asusme there's nothing of use on
http://www.hpmuseum.net/ ?
Don't think so.... :-(
But I still and
urgently need the schematics for the 7978 drive. My
I sould be suprised if any
published manual contained full schematics. By that period, HP comptuers were 'repaired'
by board-swapping. If you're
lucky there will be _some_ useful info in the boardswapper guide, like
pinouts or testpoints.
You are too pessimistic :-) I hope to find good
documentation of
everything I need.
I hate to say this, but you may be reduced to producing your own
schematics. It can't be that difficult, I've managed to do it a few times.
But there is one small problem: I don't have the time to do that for an
old switching power supply. And by the way I'm not very good in
repairing switching power supplies. These devices scare me a bit.....
+ph