Morning Chris,
Isn't the fourth connector the same as yours? the info I have is the same as this, but mine is scribbled in a book!
The 2 small connectors will be used for connection to a remote display, if one isn't on the actual set and connection to remote controls.
I'm no longer in Crete, moved back to Blighty end of 2009, just in time for the worst Winter for many years!
I am just down the road from you, in sunny Southend. Not quite the same as Crete, but it will do for now.
Για σου
Keith