As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING LINE CHECK, MAINTENANCE FOUND THAT THE EMERGENCY PATHWAY LIGHTS AT ROWS 5, 6, AND 7 ON THE RIGHT SIDE WERE INOPERATIVE. THEY REPLACED THE EMERGENCY BATTERY POWER SUPPLY AT ALL FOUR OVERWING EXIT SIGNS BUT THAT DID NOT CORRECT THE PROBLEM. MAINTENANCE THEN FOUND A CONNECTOR IN THE IMMEDIATE AREA DISCONNECTED. AFTER THE PLUG WAS RECONNECTED THE SYSTEM OPERATED AS DESIGNED AND THE AIRCRAFT WAS RETURNED TO SERVICE.