As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE REPORTED IN CABIN AFTER NR 1 ENGINE START. PERFORMED VISUAL INSPECTION OF NR 1 ENGINE, APU AND BOTH PACKS WITH NO DEFECTS NOTED. PERFORMED ENGINE START OF NR 1 ENGINE. ALL PARAMETERS NORMAL WITH NO EICAS MESSAGES OR EVIDENCE OF SMOKE, RETURNED AIRCRAFT TO SERVICE.