What was found
CLE TO MSY - AFTER LEVELING OUT AT FL360, THE CREW RECEIVED AN EICAS WARNING FOR "BAGG SMOKE". THE CREW COMPLETED THE APPROPRIATE QRH CHECKLISTS AND PRESSED THE EXTINGUISHER BUTTON, THEN RECEIVED THE "BAGG EXTNGBTL INOP" MESSAGE. ON DESCENT TO CMH, THE BAGGAGE SMOKE INDICATION EXTINGUISHED. THE FLIGHT ATTENDANT CONFIRMED THERE WAS NO SMOKE IN THE BAGGAGE COMPARTMENT AND THE FLIGHT LANDED WITHOUT INCIDENT. THE BAGGAGE COMPARTMENT WAS INSPECTED AND NO SIGNS OF FIRE OR SMOKE WERE PRESENT AND BOTH EXTINGUISHER BOTTLES WERE DISCHARGED. MAINTENANCE REPLACED BOTH EXTINGUISHER BOTTLES AND BOTH BAGGAGE COMPARTMENT SMOKE DETECTORS AND THE SYSTEM OPS CHECKED GOOD.