As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE APPEARED AFTER SELECTING CRUISE THRUST, EMERGENCY DECLARED. DIVERTED TO JFK. PERFORMED TROUBLESHOOTING IAW ROLLS ROYCE FAULT ISOLATION MANUAL 72-00-00 AND EMB AMM 21-20-00 WITH NO DEFECTS NOTED. PERFORMED 75 PERCENT N2 RUNS WITH AND WITHOUT PACKS WITH NO DEFECTS NOTED. PERFORMED VISUAL INSPECTION OF PACKS WITH NO DEFECTS NOTED. RETURNED AIRCRAFT TO SERVICE.