As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TRANSIT CHECK CAPTAIN REPORTED NORM ANTI-SKID AND ALTN ANTI-SKID MESSAGES IN EICAS. MESSAGE APPEARED EVERY TIME THAT THE PARKING BRAKES WERE USED. FIM PROCEDURE WAS ACCOMPLISHED BUT NO FAILURE CODE APPEARS. AIRCRAFT WAS SENT TO THE HANGAR. ANIT-SKID AND AUTO-BRAKE CONTROL UNIT WAS REPLACED AND TESTS WERE PREFORMED IAW MM.