As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE-LAV SMOKE WARNING (3F-1L), NO SMOKE IN LAVATORY. PERFORMED CABIN AREA CONTROL PANEL LAVATORY SMOKE DETECTION TEST, PER AMM 26-13-00-710-801 OPERATIONAL TEST AND 26-13-00-740-801 SELF TEST. ALL CHECKS SATISFACTORY.