Which manual for HP-48SX?

[EugeneNine]

I had a .pdf soruce (The HP digital sender I used creates pdf's in its firmware), the gui front end just extracts each page, OCR's then puts back together for me. That part was easy but still had a number of errors due to things like a not clean scan and lots of math symbols. So I'm slowly going though and cleaning it up.
I would just upload here but its exceeds the file size limit.