As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN ENGINE POWER WAS ADVANCED TO THE TAKEOFF SETTING, THE NR 2 ENGINE THRUST REVERESER UNLOCK INDICATION ILLUMINATED. THE TAKEOFF WAS ABORTED AT APPROXIMATELY 30 KTS AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE PLACED THE REVERSER ON MEL 78-1A.