As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB FOLLOWING AN AIR CONDITIONING PACK 2 RESET DUE TO AN OVERHEAT, FLIGHT ATTENDANT REPORTED SMOKE IN THE CABIN. NR 2 PACK WAS SELECTED OFF. RETURNED TO DEPARTURE FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE DEACTIVATED THE NR 2 PACK AND PLACED ON MEL. LATER, MAINTENANCE REPLACED NR 2 PACK FLOW CONTROL VALVE. OPERATIONAL CHECK OK.