As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAVATORY SMOKE WARNING CAME ON DURING CRUISE. NO SMOKE NOTED IN ANY OF THE LAVATORIES. WARNING WENT OUT AFTER ABOUT A MINUTE. ACCOMPLISHED LAVATORY SMOKE DETECTION FAULT REVIEW AND SYSTEM TEST IAW AMM 26-17-00. NO FAULTS NOTED, OPS CHECKED GOOD.