As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED LAVATORY SMOKE DETECTOR MESSAGE WITH SMOKE VISABLE. MAINTENANCE TROUBLESHOT, REMOVED AND REPLACED THE LAVATORY WASTE MOTOR ASSEMBLY USING THE AIRCRAFT MANUALS. OPERATIONAL CHECKS WERE PERFORMED USING THE AIRCRAFT MAINTENANCE MANUALS. AIRCRAFT WAS RELEASED FOR SERVICE.