What was found
DURING TAKEOFF ROLL, THROTTLES WERE SPLIT ON RUN UP FOR TAKEOFF. WHILE ADJUSTING THROTTLES TO EVEN, CAPTAINS THOUGHT HE HIT THE AUTOTHROTTLE DISCONNECT, AS THE AUTOTHROTTLE DISCONNECTED, ECAM WARNING CAME ON. REJECTED TAKEOFF APPROX 80 KTS. AFTER COMPLETING CHECKLISTS & CONFERRING WITH MX, ANOTHER TAKEOFF WAS ATTEMPTED. DURING RUN UP AUTO THROTTLE DISCONNECTED AGAIN & TAKEOFF WAS REJECTED. AUTO THROTTLE APPEARS INOPERATIVE. R & R NR 1 TCC 301CJ1 IAW AMM 22-36-34-04-01. PERFORMED SATISFACTORY AFS AUTOLAND TEST IAW AMM 22-40-00-05.