As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED: SMOKE DETECTOR WENT OFF WITH SMOKE LIGHT ON OVERHEAD PANEL. CUSTOMER WAS IN THE LAV, DENIED SMOKING. FAS SAID THERE WAS NO SMOKE OR ODOR. AURAL ALERT AND LIGHT WENT OUT AFTER 45 SECONDS. CLEANED ALL 3 LAVATORIES SMOKE DETECTORS WITH COMPRESSED GAS SPRAY TO REMOVE DUST AND LINT. ALL THREE LAV SMOKE DETECTOR LIGHTS ARE GREEN; OPS CHECK GOOD IAW AMM 26-14-00.