All Star Alliance carriers use one checkin which is located at the end of TBIT by Terminal 3. The self service kiosks are for all *A carriers even. The lounge is located on Level six using the elevators. I was just there since Virgin Australia uses the lounge. One of the nicest lounges around. They'll even hand out tablets for use.

Note even if you have Precheck, there's no Precheck or Precheck lite at TBIT since no carriers there are part of the program.