As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, EMERGENCY LIGHT FAIL MESSAGE "EPSU INT LOAD FWD L" AND "EPSU ARMED / ON AFT L" DURING PTP TEST; REMOVED AND REPLACED EPSU 13WL IAW AMM 32-51-38. REMOVED AND REPLACED BATTERY PACK IAW AMM 33-51-38. RE-TERMINATED PIN C OF 13WL-A CONNECTOR IAW AWM 33-51-04. EMERGENCY LIGHT OPS CHECK GOOD IAW AMM 33-51-22-710-001-A. REMOVED AND REPLACED O2 CONTAINER IN AISLE OF AFT ENTRY DOOR AND OPS CHECK O2 DROP GOOD IAW AMM 35-23-00.