As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT THE NR 1 FMS SCREEN FAILED, FOLLOWED BY THE AMBER LATERAL MODE OFF CAS MESSAGE. FOR THE NEXT FEW MINUTES THERE WAS A MUSTY ODOR IN THE COCKPIT THAT DISSIPATED. REMOVED AND REPLACED THE CDU . PERFORMED A SATISFACTORY OPERATIONS CHECK. WORK DONE LAW AMM 34-60-01. NO FURTHER DEFECTS NOTED.