As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3374 THE CREW REPORTED THEY WERE UNABLE TO RESET THE EMERGENCY LIGHTS FROM ROW 6. THE AIRCRAFT WAS REMOVED FROM SERVICE. RESET EMERGENCY LIGHTS AND THE OPERATIONAL CHECK WAS GOOD PER EMB AMM 33-50-00. THE AIRCRAFT WAS RETURNED TO SERVICE.