As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE CARGO FWD & AFT INDICATION DURING CRUISE. EACH INDICATION WAS ABOUT 3 SEC LONG AND SHOWED UP TWICE ON EICAS. NO FURTHER INDICATIONS AFTER THE TWO REPORTED GROUNDED - YES. INSPECTED FWD AND AFT CARGO SMOKE DETECTOR SENSORS, NO DEFECT FOUND, RESET C/BS AND PERFORMED BITE TEST, SYST CHECK OK PER AMM 26-16-00. OK FOR SERVICE.