As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON LAYOVER CK, FOUND 2 AFT LEFT OVERWING EMERG EXIT LIGHTS INOP. FOUND CONNECTOR PLUG OFF OF BATTERY PACK FOR AFT O/W BATTERY PACK. REINSTALLED CONNECTOR CHECKS GOOD. REPLACED BATTERY FOR MIDDLE O/W EXIT LIGHT, NO HELP. REPLACED BATTERY PACK, OPS CKS GOOD.