As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCI - DURING MAINTENANCE INSPECTION THE EMERGENCY EXIT LIGHTS OVER BOTH EXITS AND THE AISLE PATH LIGHTS FROM RO 8 TO 12 WERE FOUND TO BE INOPERATIVE. MAINTENANCE CLEANED THE CONNECTORS ON INVERTERS NUMBER 4 AND 5, OPERATIONALLY TESTED WITH NO DEFECTS AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.