As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MKE/IND - FLT 1198 - ON TAKEOFF ROLL, CREW NOTICED THE LT DC GENERATOR FELL OFF-LINE WITH THE LT DC GEN ANNUNCIATOR ILLUMINATING. THE CREW ABORTED TAKEOFF AND RETURNED TO THE GATE. THE AIRCRAFT WAS INSPECTED BY MAINTENANCE. THEY FOUND THE LT DC POWER PANEL BAD. THE DC POWER PANEL WAS REPLACED. OPS CHECKED AND RETURNED TO SERVICE. (X)