What was found
A/P 1 KICKED OFF TWICE FL 360, GOT MOMENTARY FCC DATA FAULT ALERTS. A/P 2 OK, 5 MIN LATER GOT LVL 1 EMERG PWR ON ALERT, RECYCLED EMER PWR SW, ALERT RETURNED. DEPLOYED ADG, SELECTED ELEC MODE. DIVERT TO DEN. ON FINAL SLOWING THROUGH 170 KIAS A/P AND ATT FAILED LOST LEFT EMERGENCY BUS. INTEROGATED CFDS, EPCU FAULTED EMERG POWER RELAY INTERFACE. T/S PER MD11 FIM . FOUND RCCB FOR LT DC EMERG BUS B1-1754 OPEN AND SIGNS OF OVERHEATING AT TERMINAL A1. REMOVED AND REPLACED C/B B1-1754 (LEFT EMERG DC FEED C/B). OPS CHECK NORMAL FOR LT EMERG BUSS AND EMER PWR TEST. FCC 1 RTS IS NORMAL. RETURNED A/C TO SERVICE.