As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED VIBRATION IN FLIGHT DURING CRUISE. CREW DECLARED AN EMERGENCY AND DIVERTED TO CMH. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT PER EMB AMM, AND FOUND A/P ELEVATOR SERVO TO BE THE CAUSE. MAINTENANCE REMOVED AND REPLACED A/P ELEV SERVO PER EMB AMM, OPS CHECK GOOD.