As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CAPTAIN DECLARED AN EMERGENCY DUE TO SMOKE IN THE CABIN. THE AIRCRAFT WAS EVACUATED ON THE TAXI WAY. THE PASSENGERS WERE PICKED UP BY BUS AND THE AIRCRAFT WAS TOWED BACK TO THE GATE. MAINTENANCE INSPECTED AND REPLACED THE RECIRCULATION FAN IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 21-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.