As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CARGO SMOKE INDICATOR ILLUMINATED ON GROUND, WHEN THE CARGO BAY WAS UNLOADED AN ELECTRICAL BURN SMELL WAS DETECTED. MAINTENANCE FOUND BOTH CARGO LIGHTS TO BE DIRTY AND BURNED. BOTH LIGHTS WERE REPLACED AND THE AIRCRAFT WAS RETURNED TO SERVICE WITH NO FURTHER PROBLEMS.