As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE EMERGENCY LIGHTS AT 9DF AND 7DF WERE NOTED TO BE INOPERATIVE, DURING THE PREFLIGHT INSPECTION. MAINTENANCE INSPECTED AND REPLACED THE POWER SUPPLY AT THE 5LK POSITION. OPERATIONAL CHECKS WERE COMPLETED, AND THE AIRCRAFT WAS RETURNED TO SERVICE.