As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE FLIGHT NR 2153, AFTER TAKEOFF, THE CREW SAW AND SMELLED SMOKE AND THE LAV SMOKE ALARM SOUNDED. THE AIRCRAFT RETURNED TO CLE WITHOUT INCIDENT. MAINTEANCE FOUND THE NR 1 ENGINE BLOWING SMOKE INTO THE AIRCRAFT. THE NR 1 ENGINE WAS REMOVED AND REPLACED. THE AIRCRAFT RETURNED TO SERVICE.