As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 0538 - EWR - SMOKE WAS OBSERVED COMING FROM THE VICINITY OF THE AFT GALLEY COFFEEMAKER WHILE IN FLIGHT. THE COFFEEMAKER WAS TURNED OFF AND THE SMOKE CEASED. MAINTENANCE FOUND BURNT PAPER AT THE BACK OF THE COFFEEMAKER. THE AREA WAS CLEANED FREE OF THE DEBRIS. THERE WAS NO TROUBLE FOUND WITH THE COFFEEMAKER.