TC reported smoke and fire detected at FM2 car, fault self cleared when departing CNG1 TC reported s moke and fire detected at FM2 car, fault self cleared when d eparting CNG1 ~~~~~ 2556 TC reported smoke and fire detected, fault self cleared when departing CNG1 CE:2556 No recurrence of fault  2556 FC 735 (Fire & smoke detector lost power) Replaced DC-DC converter on 2556 FCP. Function test - ok. Fault did not reoccurred. No abnormalities found. Old: A103695 New: A103740 Shaun 45338