What was found
PRIOR TO TAKEOFF, WHEN SELECTING AUTO BRAKES TO MAX, NORMAL BRAKING WAS LOST, THEN AUTO BRAKES OFF LIGHT WENT AMBER AND NORMAL BRAKING RETURNED AUTOBRAKES COULD NOT BE SELECTED WITH BRAKES APPLIED. PERFORMED OPS CHECK OF AUTOBRAKES SYSTEM IAW M/M 32-42-54. OPS GOOD, NO DEFECTS NOTED.