Pre-amp outputs not working, D400

[Axel]

New info, if you press source button 2 seconds you can control the sound and can keep pre on/off on tone button

Sorry, could you please explain this in more detail?

Hmmmm.......which details should I give. It works at described.

In the config for the remote I selected pre on/off on the tone button, I did nothing else with remote config.

If I press the source button 2 seconds I can control the tone on this button.

Sorry there are no more details for remote config.

If you press the source button for two seconds, it shows the type of the incoming signal. I don’t understand how you can control the tone from here. There is nothing to be gained from turning the pre-outs on and off. It can be left on all the time.