As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE FLYING TO DTW, AUTOPILOT DISENGAGED. THE AVIONICS SMOKE DETECTION LIGHT ILLUMINATED AND THEN WENT OUT. CREW SMELLED SMOKE IN THE FLIGHT DECK AND VERIFIED THE SAME IN THE CABIN BY THE FLIGHT ATTENDANT, DIVERTED TO APN. FLIGHT LANDED WITHOUT FURTHER INCIDENT. FOUND FCC BURNED WHEN TROUBLESHOOTING THIS DISCREPANCY. REMOVED AND REPLACED FLIGHT CONTROL COMPUTER.