OK. Not surprising no-one has anything.
I changed the title to aid any future tragic. I found a service manual for the 9440 model which may have some cross-over to the 9470 and 9460.
https://www.aef.se/Instrumentmuseum/Instrumentportal_ny/Dokument/Enstaka/9440_Protokollanalysator.pdfThose who maintain FTP manuals sites might want to snaffle a copy and change the pdf name to English. Although Google still managed to find this one for me.
I still can't find floppy disk images but one of the differences of the 9470 model is a HDD. So When I get it working I may be able to format a floppy from the HDD. It did work for long enough to boot up. But then the Schaffner IEC mains filter let out the stink. Probably a RIFA inside.
Even with my limited experience I should have known better. Old test equipment, not powered on for 10 years (or more) Phzzzt Phzzt stink.
I'm not actually going to use the thing but I thought it might make an interesting case for a Z80 computer project. It has a fold down keyboard and little built in green screen CRT, a floppy drive and a handy soft pouch for stuff on the top. And a power supply.