As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING EMERGENCY ESCAPE PATH LIGHT SYSTEM CHECK ON LOG PAGE 9707422 FOUND EMERGENCY CEILING LIGHTS FROM SEATS ROW 47LK TO 50LK DO NOT TURN ON. PERFORMED TROBLESHOOTING AND FOUND BATTERY PACK ON POWER SUPPLY M734 DISCHARGED. REMOVED AND REPLACED BATTERY PACK REF AMM 33-51-07/201. EMERGENCY LIGHTS SYSTEM IS GOOD FOR SERVICE.