As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TEN MINUTES PRIOR TO LANDING LAV SMOKE LIGHT ON OVERHEAD PANEL CAME ON WITH CHIME ON P/A. FLT ATTENDANT HAD NO INDICATION OF SMOKE IN EITHER LAV OR CABIN. FIVE MINUTES TO LANDING LAV SMOKE LIGHT WENT OUT WITH NO CHIME. NO SMOKE WAS EVER DETECTED BY CREW. QRH WAS FOLLOWED. PERFORMED LAV SMOKE DET TEST ON FWD & AFT LAV PER MM SYS CHKS OK. NO PROBLEMS FOUND.