What was found
SAV - FLIGHT 2312, THE CREW REPORTED ELECTRICAL SMOKE IN THE COCKPIT AND CABIN, AND ON SHORT FINAL AUTO PILOT FAILED, SECONDARY PITCH TRIM FAIL, THEN CA, & F/O MFD'S AND EICAS ALL WENT TO RED X'S FOLLOWED BY THE AUTO PILOT CIRCUIT BREAKER POPPING. THE AIRCRAFT LANDED AT SAV WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE NUMBER ONE IC-600, OPERATIONALLY TESTED WITH NO DEFECTS, AND PLACED THE AUTO PILOT ON MEL.