hello mate
i used to run a japax edm but mine had a 3.5" fdd but it was some weird jap format but i do know that you can copy these disks on the machine you need a wizard disk to copy the files. you used to be able to get these disks from sodick edm your custmer will know who these peple are!
by the sounds of it if one of the drives is broke you need a new drive any way
one for system disk and one for data disk
good luck hope you fix the problem