As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT F/A ADVISED OF SMOKE IN THE CABIN. IN FLIGHT EMERGENCY WAS DECLARED. ALL CIRCUIT BREAKERS SET & GALLEY POWER SWITCH THEN BEING TURNED OFF. OPERATED ALL NORMAL OPERATIONS WITHIN THE GALLEY FOUND NR 3 COFFEEMAKER TO BE EMITTING A FOUL ODOR. REMOVED AND REPLACED NR 3 COFFEEMAKER BREWED NUMEROUS TIMES, NO DEFECTS NOTED REF AMM 25-00.