Thanks anyway.

I was wrong about the input with hexcodes on RC1400, I misread it, there nothing like that, sorry for that.
This is only working with the RC3200, if I am not wrong again.

This is a bit confusing I must say.
Thought that a Marantz DVD would be easy to use and "talk" to some of the remote control I have, and they are all Marantz products, and made during the same time period.
There is just one button missing to get all I need to function, that is "smode".
I listen very much to SACD, but now I can´t get anything else than 2channels.

Reading a lot around the net, but there is no solution.
Not even som codes for the RC3200 that works with the DV7600, not what I have seen so far, but hopefully there are som solution to this matter.
But I am not the only one with this "problem".