As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE & BURNING SMELL IN FORWARD PART OF CABIN AFTER TAKE-OFF. RECIRCULATION FAN WAS OFF & APU WAS OFF. UPON LANDING FOUND AFT CARGO FIRE DETECTION FAULT LIGHT ON. REPLACED CARGO ELECTRONIC UNIT NR THREE THAT HAD FAULTED. SYSTEM GROUND CHECKED NORMAL.