As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING GROUND OPERATIONS, THE CREW NOTED A SMOKE ODOR IN CABIN AND ELECTED TO RETURN TO THE GATE. MAINTENANCE DETERMINED THE SOURCE OF THE SMOKE TO BE THE RT COFFEE BREWER. THE BREWER WAS REPLACED, OPS CHECKS PERFORMED AND THE DISCREPANCY CLEARED.