buzzer on msp430fr5969 Launchpad

Good morning,

has anyone successfully operated the buzzer on msp430? What is the currect buzzer pin? In the booklet it says 19, but it should be digital at input J14 so 39, no?
However even if I try this there is no sound. The same holds true for the range finder Pin is 19, but does neither work with 19 nor with 39 on LaunchPad.

Any ideas?

Display and relay are working, but I am having problems with the digital sensors.

Regards Gotz