As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE OVHT/DET LIGHT ILLUMINATED WITH CORRESPONDING AFT B DET ON DESCENT INTO DFW. THE AIRCRAFT LANDED WITHOUT INCIDENT. INSPECTION FOUND NO EVIDENCE OF FIRE. THE CARGO FIRE SUPPRESSION CONTROL PANEL WAS FOUND AT FAULT. THE CONTROL PANEL WAS REMOVED AND REPLACED IAW MM 26-16-10 AND OPERATIONAL CHECKS WERE GOOD. THE CARGO BINS WERE INSPECTED WITH NO FAULTS NOTED.