As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AURAL OVERSPEED WARNING CAME ON DURING TAKEOFF ROLL, LOW SPEED ABORT. THERE WAS A MALFUNCTION WITHIN THE OVERSPEED WARNING SYSTEM. THE AUDIBLE TONE GENERATOR WAS REMOVED. THE NR 2 CHANNEL CARD WAS REMOVED, INSPECTED, CLEANED AND REINSTALLED. THE OVERSPEED SYSTEM WAS OPERATIONALLY CHECKED IAW THE MM AND FOUND TO PERFORM WITHIN MFG SYS TOLERANCES. THE AIRCRAFT WAS RETURNED TO SERVICE.