As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHT SYSTEM TEST FAILED DUE TO EXTERNAL POWER SUPPLY UNIT (EPSU) INTERNAL LOAD FAULT TASK 33-51-00-710-001A. RELAMPED CABIN EXIT MARKING AND LOCATION SIGNS AS REQUIRED RESTORING EPSU MEMORIZED INTERNAL LOADS. CABIN EMERGENCY LIGHTING SYSTEM OPERATIONAL CHECKS SATISFACTORY REFERENCE AIRBUS A/M/M 33-51-00-710-009-A AND 33-51-00-710-001-A.