What was found
INFORMATION ONLY, REJECTED T/O 9L, PARKING BRAKE SET INDICATION, WE NEVER SET PARKING BRAKE. ONCE WE STARTED TAXI TO RUNWAY, CHECKED HANDLE DOWN POSITION, WE HAD NORMAL CONFIGURATION ON BELOW THE LINE CHECK LIST, PERFORMED RTO, SPEED BELOW 60 KTS, CLEARED RUNWAY COMPLETED RTO AND AFTER LANDING CHECK LIST, NO BRAKE COOLING REQUIRED TALKED TO MAINTENANCE, NO FURTHER PROBLEMS. INFO NOTED, CYCLED PARKING BRAKE SEVERAL TIMES, PARKING BRAKE INDICATIONS OPERATED NORMALLY, REF AMM 32-45-00, ACFT OK FOR SERVICE.