As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 5033 - DFW-SPS - PILOT REPORTED, THAT THE CARGO SMOKE WARNING LIGHT CAME ON AND FIRED THE NR 1 CARGO EXTINGUISHER. MAINTENANCE FOUND NO EVIDENCE OF FIRE OR FAULTY INDICATIONS. MAINTENANCE CLEANED THE SMOKE DETECTOR AND REMOVED AND REPLACED THE CARGO FIRE EXTINGUISHER NR 1 BOTTLE. THE AIRCRAFT WAS RETURNED TO SERVICE.