As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION UNSUCCESSFUL FIRE DETECTION SYSTEM TEST BAGGAGE EXTG BUTTON AND BAGGAGE SMOKE ON EICAS WILL NOT ILLUMINATE. THE AIRCRAFT WAS REMOVED FROM SERVICE. CLEANED CONNECTOR TO BOTH 1/2 FIRE DETECTORS. PERFORMED OPERATIONAL CHECK OF BAGGAGE FIRE DETECTION IAW EMB 145 MM 26-15-00. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.