The primary codes are contained in a post in this thread:

[Link: dbstalk.com]

But they're in CCF/pronto format. You should be able to import them with the universal browser or whatever they call it on the MX-3000.

Some of the keys have 2 codes. The difference is that one of the codes works with press/hold operations and the other doesn't.

I figured it all out and generated the AV1/AV2 alternate codes to boot, but I haven't bothered to put it in to postable form. It's kind of scattered between my desktop, my laptop, and some notes on a piece of paper... :O