HP7879B tape again

[Tony Duell]

I asusme there's nothing of use on http://www.hpmuseum.net/ ? That has 
some stuff on larger (than handheld) HP computers and peripherals.

> 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.

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.

-tony