Hi!
I too had trouble making A1000 keyboard to work on newer Amiga (CDTV in that case) I even managed to burn A1000 keyboard timer chip (replaced with new one), but I made keyboard from broken A500 to fit A1000 succesfully, so may I suggest this, but ofcourse substitute A1000 pinout to A2000 --->
http://www.amiga.org/gallery/index.php?n=3419http://www.amiga.org/gallery/index.php?n=3424But note that you have to remove one transistor in order to reset your big box Amiga from KB.
I just suspect that A1000 keyboard have incompatible controller chip with some Amigas, but I may be wrong.
You have looked at these pinouts? -->
http://old.pinouts.ru/Inputs/KeyboardAmiga5_pinout.shtmlBtw, I have few brand new (ok, new old stock) A2000 keyboards with German layout, I could consider selling one if interested to pay for shipping and stuff.