As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED A LAV SMOKE WARNING AFTER TAKEOFF WITH NO SMOKE NOTED. THE ACFT CONTINUED TO WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE R & R THE LAV SMOKE DETECTOR, OPERATIONALLY TESTED WITH NO DEFECTS NOTED, AND THE ACFT WAS APPROVED FOR RETURN TO SERVICE.