As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, A BURNING SMELL APPEARED APPROX 5 MIN AFTER FIRST CLASS OVENS TURNED ON. TURNED OFF OVENS AND PULLED C/BS AND SMELL WENT AWAY. MTC FOUND BURNED PIECE OF PAPER ON OVEN LOWER HEATING ELEMENT. REMOVED PAPER AND CHECKED OVENS. OVENS TEST OK.