Two different drives... I bet the Chinon is not original, maybe the Matsushita either. Anyone around who knows something which drives were used originally?
Both of them.
Have a look at
http://www.amiga-hardware.com/showhardware.cgi?HARDID=17
J301
This jumper is closed to add a second internal floppy drive, open to leave the second floppy out of the main unit box. The Amiga expects an ID bit stream from each floppy drive; this lets it determine the drive type. External floppies have this ID circuitry on board, but as it's not an industry standard capability, it has to be implemented on the A2000 motherboard to save cost on internal drives. Leaving the jumper open prevents the Amiga from seeing the ID sequence.
Open this jumper, and simply try sticking your Chinon drive on the 'untwisted' floppy connector where the bad df0: used to be and see if it works. If you have two twists in the cable, it will work without changing any jumpers. If you only have one twist, your Chinon is most likely jumpered as DS1 (=DF1:) and will need to be rejumpered as DS0. There should be a 'jumper map' somewhere on the drive, but anyways:
It has a Jumper with 3 Pins... (and I guess there are not many choices...
1 3 5
o o o
Are you sure there are only three pins? and not six (ie three pairs)? The jumper block should short(cover/connect) pins 3&5.
-Paul
