As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKE OFF AFT FLIGHT ATTENDANT REPORTED BOTH AFT LAVATORY SMOKE SOUNDED AND A LIGHT SMOKE COULD BE SEEN; STRONG ODOR. CORRECTIVE ACTION: REMOVED AND REPLACED APU AND CHANGED COELESOR BAG RAN ENGINES OPS CHECK AC SYSTEM NO ODOR COMING FROM AC SYSTEM.