As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING TAXIING TO THE GATE, AIRCRAFT EXPERIENCED SMOKE IN THE FLIGHT DECK CAUSED BY NR 2 FMS CDU. NR 2 CDU WAS CONFIRMED FAULTY AFTER MAINTENANCE INVESTIGATION AND THE AIRCRAFT WAS DISPATCHED UNDER MEL. CDU WAS REPLACED ON RETURN FLIGHT AND ROUTED TO VENDOR FOR INVESTIGATION. TSSV: 1861 HRS.