unfortunately the keyframe has to come out to gain access to the contacts, you can't get to them from above.

Do you have a local keyboard tech that can help here? I say that because I would also disconnect all the connectors so the lower half of the Audya is completely separate from the top to avoid damaging cables/connectors. Once that's done you can flip over the bottom and remove the screws from underneath. The two blocks either side also need to come out. It is a little tricky.