As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT INSPECTION THE CREW REPORTED THAT THE MIDDLE EMERGENCY LIGHTS ON THE FLOOR WOULD NOT ILLUMINATE. MAINTENANCE CLEANED THE CONNECTION AT THE FLIGHT ATTENDANTS LIGHTING CONTROL PANEL, OPERATIONALLY TESTED THE SYSTEM AND CLEARED THE DISCREPANCY.