What was found
DFW - FLT 0776 - AFTER TAKEOFF DFW WHEN LANDING GEAR RETRACTED, LT MLG MESSAGE APPEARED ON MFDU. RECYCLED LANDING GEAR WITH SAME RESULTS. AIRCRAFT RETURNED TO DFW AND LANDED WITHOUT INCIDENT. ADJUSTED LT MLG DOOR STOP. ACCOMPLISHED LANDING GEAR RETRACTION CHECK WITH NO DEFECTS FOUND. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)