As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TWO CEILING EMERGENCY LIGHTS, 2 AISLE EMERGENCY LIGHTS AND 2 AFT DOOR EMERGENCY LIGHTS INOPERATIVE. FOUND AFT EMERGENCY POWER SUPPLY UNIT (EPSU) TEST "UNIT FAULT". REMOVED AND REPLACED AFT EPSU AND BATTERY IAW AIRBUS MAINTENANCE MANUAL 33-51-38-400-001. OPS CHECK GOOD.