Hi Stuart,
This is a long shot, but here goes...
I have an HP5036A lab, but lack the book.
Searching, I found this on a forum from way back in 2003:
"Yes, I managed to get a manual, by watching auctions on eBay. In fact, I
bought another HP 5036A plus manual and let the seller keep the hardware to
save shipping costs from England to the US. The manual is softcover and
would not be easy to copy without cutting the spine off, which would ruin
its value.
Don't give up, though. I know someone that has a manual that has been cut up
and copied and I'm trying to get it so that I can make an Acrobat PDF file
of it. Stuart Johnson"
I don't suppose you ever got a .pdf copy scanned?
Just interested.
Cheers,
Simon Coleby
Customer Service Centre.
Agilent Technologies UK Limited, Registered Office: 710 Wharfedale Road, Winnersh
Triangle, Wokingham, Berkshire, RG41 5TP - Registered No. 03809903