Hi there

I currently have this problem and I have followed the guide but no joy. I was wondering if anyone could explain to me how this lock works please? I am guessing that the cable attached to the front lock contains a cable within it? Also what actually does holding the little while disk in place actually do? when I hold the while disk in place and turn it does nothing the same as when just turning the key I Notice it not moving at all.

Ive searched the net and I'm not coming up with much luck, this guide is the best thing I've found so far.

Cheers