What was found
DURING TAKEOFF THE FLAP/SLAT HANDLE WOULD NOT MOVE OUT OF TAKEOFF FLAP SETTING 15.5. INITIALLY COULD NOT MOVE FLAP SELECTOR WHEEL EITHER. EVENTUALLY USED THE FLAP SELECTOR WHEEL TO SELECT FLAPS 24 FOR LANDING, COULD NOT MOVE FLAP HANDLE OR GET SELECTOR TO MOVE UP PAST 15.5. NOTE GROUND PUSH BACK CREW PULLED GROUND POWER PRIOR TO OUR TRANSFER TO APU. INSPECTED AND CLEANED FLAP CONTROL MODULE, CHECKED ALL CABLE RUNS AND PUSH RODS FROM FLAP HANDLE CONTROL MODULE TO CAC, NO DEFECTS NOTED, COMPLETED AN ADJUSTMENT/TEST FLAP CONTROL MODULE IAW AMM 27-51-01-2. NO DEFECTS NOTED AT THIS TIME.