As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 6306 - CMH-BDL - ON TAKEOFF FROM CMH AT ABOUT 500 FEET, LAV SMOKE DISPLAYED ON EICAS AND AT THE SAME TIME, THE FA NOTICED SMOKE IN THE CABIN. COMPLETED MEMORY ITEMS, DECLARED AN EMERGENCY. UNEVENTFUL LANDING. REMOVED AND REPLACED ENGINE 2.