What was found
AT FL280 FIRE BELL SOUNDED, LOWER CARGO LIGHT ILLUMINATED, AFT CARGO MESSAGE ON MX DISPLAY LIGHT EXTINGUISHED DURING DESCENT. RAN LOWER CARGO FIRE CHECKLIST, CONTINUED TO DAL ASKED FOR FIRE TRUCKS TO MEET AIRCRAFT. DAL FIRE AND RESCUE FOUND NO FIRE AND DAMAGE TO AIRCRAFT. TRANSFERRED TO DMI 7250016 IAW KII MEL 26-19 CAT C DUE 4/18/11 PLACARDS INSTALLED. PART REPAIRED, FINDINGS NO PHYSICAL DAMAGE, UNIT FAILED PRELIM TEST DUE TO LOW QUIESCENT, UNIT WAS CLEANED, LOGIC BOARD REPLACED AND FUNCTIONAL TESTED.