As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX FLIGHT NR 2389, ON LANDING NR 1 ARCDU SHORTED OUT WITH ELECTRICAL SMOKE. NO DISPLAY ON DU. EMERGENCY VOLUME ON RADIO. MAINTENANCE REMOVED AND REPLACED PILOT'S ARCDU IAW MTC 6238101 WITH SERVICEABLE UNIT. CAT LLL FUNCTIONAL CHECK GOOD. AIRCRAFT REMAIN CAT LLL. PLACARD SHOWS CAT LLL. MTX CONTROL INFORMED. AIRCRAFT RETURNED TO SERVICE.