What was found
AUTO THROTTLES FAILED ON TAKEOFF. WOULD RE-ENGAGE, BUT THEN CLICK OFF AS THE THROTTLE TRIES TO MOVE. GROUNDED - YES. CONFIRMED FAULT, A/T FLIGHT FAULT REVIEW SHOWS MSG 22-31688 (1) ASM2 CH-A SPD RATE MONITOR (2) ASM2 CH-A N1 RATE MONITOR, & (3) ASM2 CH-A ARM RATE MONITOR. REMOVED & REPLACED NR 2 A/T SERVO MOTOR REF AMM TASK 22-31-91, OPS CK NML. ALSO, ACCOMPLISHED FIM 22-11 TASK 802 (GP43) LRU REPLACEMENT TEST FOR A/T, OPS CK NML. THIS CLOSES MEL 22-4B. NO SPECIAL MEL PROCEDURES TO REVERSE.