As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED: PILOT REPORTS THAT WHILE AT CRUISE, THE SMOKE REST UPR DOOR 4 EICAS ILLUMINATED BRIEFLY, THEN EXTINGUISHED, FOLLOWED BY CARGO HEAT BULK CARGO WHICH EXTINGUISHED AFTER 10 MINUTES. MAINTENANCE FOUND NO CMCF EXISTING FAULTS ON THE CABIN SMOKE DETECTOR IAW AMM 26-10-F4-33A-421A. ACCOMPLISHED GROUND TEST CARGO HEAT SYSTEM AND PASSED IAW AMM 21-40-F3-07A-421A. RETURNED TO SERVICE.