As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2334. LAV SMOKE WARNING AND AURAL ALERT FOR ABOUT 10 SECONDS WHILE PARKED ON RAMP. REMOVED FROM SERVICE. C/W FIM 26-14-00-810-803-A. NO EVIDENCE OF SMELL. PERFORMED GVI OF TRASH & OTHER AREAS IN BOTH FWD & AFT LAV. NO SIGNS OR SMELLS NOTED. NO FURTHER DEFECTS . COULD NOT DUPLICATE. RETURNED TO SERVICE. NO PARTS REPLACED.