As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNSCHEDULED STAB TRIM EICAS MEESAGE AND AURAL WARNING DURING TAKE-OFF ROLL, ABORTED TAKEOFF AT 85 KNOTS.AIRCRAFT WAS GROUNDED. TROUBLESHOT USING FIM 27-09 FT 813, FOUND STCM FAULT BALL ON THE LEFT SAM, FAULT BALL CLEARED AND SYSTEM TEST NORMAL REMOVED AND REPLACED THE LEFT SAM IAW 27-09-00 AND 27-11-00, TEST OK