What was found
AFTER DEICE WENT TO START # 2 AND GOT A CARGO SMOKE INDICATION. CREW ELECTED TO CALL AIRPORT FIRE DEPARTMENT TO INSPECT FOR SMOKE. FIRE DEPARTMENT ARRIVED AND INSPECTED ALL CARGO COMPARTMENTS ON AIRCRAFT. NO EVIDENCE OF SMOKE OR FIRE PRESENT. WHEN MX ARRIVED AT A/C NO SMOKE ALERTS OR ECAM MESSAGES WERE PRESENT. PERFORMED MAIN DECK CARGO COMPARTMENT SMOKE DETECTION OPERATIONAL TEST, WITH NO FAULTS FOUND. RAN APU PER JRH AND PACKS PER AMM 21-11-00-05, NO FAULTS FOUND SYSTEM OPERATES NORMAL. COULD NOT DUPLICATE FAULT. NO 30 DAY HISTORY. OK FOR SERVICE.