What was found
AT CRUISE, FLIGHT LEVEL 340, FAC 1 FAIL LIGHT ECAM MESSAGE ANNUNCIATED. COMPLIED WITH COM PROCEDURE, BURNED INSULATION ODOR NOTED ON FLIGHT DECK, 1ST CLASS. ODOR DISSIPATED WITH FAC TURNED OFF, CIRCUIT BREAKER PULLED. FLIGHT DIVERTED TO MIA. AIRCRAFT LANDED AND TAXIED TO GATE UNEVENTFULLY. CORRECTED BY REPLACING NR 1 FAC COMPUTER. OPERATIONAL CHECK OK.