What was found
DURING START OF TAKEOFF ROLL, THE TAKEOFF WARNING SOUNDED WITH POWER SET ABOVE 1.4 EPR. FLAPS, TRIM AND SPEED BRAKES AT SET IN OPERATING/TAKEOFF SETTINGS. RETURNED AIRCRAFT TO GATE. RESET TAKEOFF WARNING CIRCUIT BREAKERS, MOVED STABILIZER TRIM ALL THE WAY UP AND ALL THE WAY DOWN, RECYCLED FLAPS UP AND DOWN, CHECKED EPR TEST CARDS AND ALL CHECKED GOOD.