As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT 3062, SERVICE CHECK FOUND NUMEROUS EMERGENCY LIGHTS INOP IN THE 2L DOOR AREA. CORRECTIVE ACTION: BITE CHECK ON FACE OF 15WL ESPU SHOWED BATTERY AND UNIT FAULT. REPLACED THE EPSU BATTERY AND FAULT CLEARED, BUT UNIT FAULT REMAINED. REMOVED AND REPLACED EPSU 15WL ALL OPS OK. (LP 5980099)