[Andy R]

In the Hardware Setup dialog, select the Analog Out page, choose "TRS Mirrors/Analog Out 1 - 2".

In the Hardware Setup dialog, select the Monitor page and create a stereo output assigned to Analog Out 1-2.

On a tracks I/O, choose Stereo Monitor as the output.

Assuming all other settings are default, you should have output via the headphones and TRS 1 - 2. Toggle the volume knob by pressing it to vary CR (Control Room) and HP (Headphone) volume. Make sure the Mute button to the left of the CR/HP volume is not lit.

If you still get nothing from TRS 1 - 2, use headphones to verify instead. If you have signal in the headphones, and the mute is not lit, then something could be defective.

At this point I would try trouble shouting by routing audio to the other 6 audio outputs to verify they do, or don't work.