I thought I had changed my pin code, but later it didn't work. I tried the default code "0000" and that did it! Try it, before you hand in the hand set.
Beovision LX5500, BeoCord V6000, BeoSound 9000, BeoLab 8000, BeoLab 3500, BeoLab 2000, BeoVox1, BeoCom 6000, Form1, LightControl 1