As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAV SMOKE WARNING ON EICAS IN FLIGHT. INSPECTED AND PERFORMED OPS CHECK OF LAV LIGHTS AND BALLAST. OPS CHECK SAT, NO SINGS OF BURNING/DAMAGE. PERFORMED OPS CHECK OF LAV SMOKE DETECTION SYSTEM. OPS CHECK SAT. UNABLE TO DUPLICATE FAULT AT THIS TIME. NO FAULTS FOUND. PERFORMED HIGH ENG RUNS. NO DEFECTS NOTED