What was found
FLIGHT 7701 IND TO DEN, ON APPROACH THE CREW ATTEMPTED TO EXTEND FLAPS 1 AT 210KTS AND OBTAINED A FLAP FAIL MESSAGE ON THE EICAS. CYCLED THE FLAPS THREE TIMES PER THE QRH AND DISCOVERED THE SLATS WOULD MOVE, BUT THERE WAS NO FLAP MOVEMENT. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE WARMED AIRCRAFT IN HANGAR, DROPPED FLAPS AND FOUND LT OB ACTUATOR TRIPPED, RESET AND OPS CHECKED GOOD.