What was found
THE AIRCRAFT WAS GROUNDED. DURING CLIMB OUT, AT APPROXIMATELY 13,000 FEET, FLIGHT ATTENDANTS REPORTED SMOKE IN CABIN. SMOKE CHECKLIST ACCOMPLISHED. LEFT PACK AND CABIN FANS TURNED OFF. LANDED WITHOUT INCIDENT AT FLL. REPLACED AIR CYCLE MACHINE LEFT PACK PER AMM 21-52-21-400-001-A.