HP 9121 9122 drives

[Tony Duell]

> have some specs but other than that they're useless. I have the service
> manual for the drive used in the 9121 but that's all.

I have that manaul too (it's entiled something like 'HP 3.5" floppy disc 
drive service infrormation'). Mine has a section specifically on the 
9121, which includes the PSU schematic and a complete parts list for the 
controller board (but no schematics for the interesting bits).

-tony