As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW AFT CABIN EMERGENCY LIGHTS L2 615 AND L2 671 AND TAIL COMPARTMENT EMERGENCY LIGHT L2 694 COME ON WITH FLIGHT ATTENDANT EMERGENCY LIGHTS SWITCH IS PLACED ON. REPLACED BATTERY PACK B5 27 FOR AFT CABIN EMERGENCY LIGHTS L2 615 AND L2 671 AND TAIL COMPARTMENT EMERGENCY LIGHT L2 694. SYSTEM GROUND CHECKED NORMAL OPERATION.