advanSea S400 pinout

[SailorMcCruise]

Hello,
on the boat I am taking care of the anemometer does not work anymore.
The owner told me the display was already disconnected when he got the boat.
Now I wanted to see if it can be fixed, but i cannot seem to find any pinouts / voltages as to detect if the masthead sensor is still working somehow.
Does anyone have information on the advanSea S400 ?

Thanks!