What was found
(CAN) DURING NR 1 ENGINE START ENGINE ECAM WARNING OF EGT OVER LIMIT, EGT WITHIN ALLOWED LIMITS, NEW START ATTEMPTED ENG NR 1 CONTROL SYST FAULT AND SLOW TO RESPOND ECAM WARNING, FLIGHT CREW ACCOMPLISHED TAIL PIPE FIRE DRILL.IAW TSM 80-00-00-810-842, START VALVE TEST C/O NO FAULTS REPORTED, TSM 73-21-72-810-899, ENGINE MANUAL START C/O ECAM WARNINGS REAPPEARED, WITH TGT AT 430 DEGREES C ENGINE MASTER SELECTED OFF AND DRY CYCLE C/O, FMU REPLACED AND NEW START ATTEMPTED ENGINE FOUND SERVICEABLE. AIRCRAFT RETURNED TO SERVICE.