As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT CREW RECEIVED EICAS LAVATORY SMOKE WARNING. THE FLIGHT ATTENDANT FOUND NO TRACES OF FIRE OR SMOKE IN THE LAVATORY. CREW COMPLIED WITH AOM VOL 1 PROCEDURES, DECLARED AN EMER & LANDED WITHOUT INCIDENT. CFR CLEARED THE ACFT TO TAXI. LAVATORY SMOKE INDICATION INFLIGHT. NO ORDER NOTED. R & R SMOKE DETECTION PANEL IAW AMM 26-14-02. OPERATIONS CHECKED GOOD.