As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON ENGINE SHUT DOWN, SMELLED LIKE ACRID ELEC SMOKE ROSE FROM BEHIND F/O SEAT FROM THE VICINITY OF THE C/B PANEL A/C WAS POWERED BY THE APU GRD POWER WAS AVAILABLE. OPENED AND INSP C/B PANELS NTF INSP FOR OPEN C/B NONE FOUND RAN ENGS TRANS POWER FORM APU TO ENG AND BACK CHECKED WINDOW HEAT ALL NORMAL OK FOR SERVICE.