As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHL- FLIGHT 3514 CREW REPORTED EMERGENCY LIGHTS WOULD NOT OPERATE FROM EITHER COCKPIT OR CABIN. ALL EMERGENCY LIGHT BATTERIES, EMERGENCY LIGHT CONTROL BOX, AND FLIGHT ATTENDANTS LIGHT SWITCH WERE REPLACED. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.