As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, CREW REPORTED THE NR 1 FMS SHUTDOWN, AUTOPILOT DISENGAGED AND VISIBLE SMOKE APPEARED FROM THE LT SIDE OF THE INSTRUMENT PANEL. AFTER EVALUATION, DIVERTED. AN EMERGENCY WAS DECLARED, & LANDED. THE NR 1 FMS WAS FOUND TO BE DEFECTIVE AND WAS REPLACED WITH AN INSPECTED UNIT. OPS CHECKED SATISFACTORY.