I don't have much info on a Conia, but if the remote is IR, you should be able to learn on the 3000. It could be one of those weird IR remotes which can't be learned on the 3000, but I can't tell.

You can learn on any screen and any key without setting a component code, so that is not the problem.

What happens when you try to learn? Do you get the 2 beeps and NG?

Be sure and hold the key down on the Conia remote until the 3000 beeps, if it ever does. Other than that, there isn't much more that I can tell you.

I googled on the Conia M380, and it looks straightforward enough, so good luck on teaching it to the 3000.