As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AT FL 330 "CABIN PRESURE" WARNING LIGHT ILLUMINATED. CABIN UNCONTROLLABLE, RAPID CABIN DESCENT CARRIED OUT. CABIN LIGHT WENT OUT THROUGH FL 200 BUT CABIN ALT SHOWING FL 300. ALSO, BOTH LAVATORIES DETECTORS CAME ON WITH NO VISIBLE SMOKE. CABIN RESSURE CONTROLLER REPLACED AND SYSTEM CHECKED SERVICEABLE AS PER MM 21-32-00. BATTERIES REPLACED IN BOTH LAVATORY SMOKE DETECTORS.