As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED A LAVATORY SMOKE INDICATION ON EICAS TWICE DURING FLIGHT. CREW PERFORMED QRH AND CONTINUED TO DESTINATION. MX INSPECTED AND FOUND NO EVIDENCE OF LAVATORY FIRE. MX PERFORMED OPS CHECK OF LAVATORY SMOKE SYS, SUCCESSFUL. ACFT WAS APPROVED FOR RETURN TO SERVICE.