As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JUST AFTER TAKEOFF THE CREW RECEIVED A RECIRCULATION FAN MESSAGE AND THE F/A REPORTED SMOKE IN THE CABIN. TURNED OFF THE FANS AND SMOKE QUICKLY DISSIPATED AND FLIGHT CONTINUED. VERIFIED FAN CAUSED THE EVENT. R & R THE RECIRCULATION FAN AND FILTERS IAW AMM.