What was found
SMOKE IN COCKPIT ORIGINATING FROM CENTER CONSOLE/FMS NR 2 AREA. INSPECTED CENTER CONSOLE FOR ACTUAL ORIGIN OF SMOKE. FOUND AT 3 FMS CDU AS THE SOURCE AS INDICATED BG THE PRESENCE OF A BURNED PLASTIC ODOR EMITTING FROM THE UNIT. INSPECTED ALL CONSOLE WIRING FOR SIGNS OF DAMAGE, INSPECTED AVIONICS COOLING SQS. FOR PROPER OPERATION AND VERIFIED PROPER VOLTAGES PRESENT AT THE FMS CDU. NO FURTHER DEFECTS NOTED. THE NR 2 FMS CDU WAS REPLACED ON A SQUAWK IN THE SAME W/O. ALL DAMAGE WAS CONFINED WITHIN THIS UNIT REF MM 05-102.