Now the UI board is free to take out. You can grab it by the knobs and start lifting it on the right side half way out.

On the left side the speaker and its cable might be in the way to get it out straight. Just move it diagonally to the right to get it out completely.

Make sure the black plastic mat underneath the UI board stays inside.

After reassembling you want to check the board with the internal test function. You can enter it by holding the "COM" button while powering on, then choose the function test (0).