As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN EMERGENCY LIGHTING EPSU SYSTEM TEST (CIDS1) FAILS FOR EPSU (16) OWD R CLASS 1. REQS BATTERY R2 IAW TASK 33-51-38-000-002-A & TASK 33-51-38-400-002-A. REMOVED AND REPLACED BATTERY IAW 33-51-38-000-002 & 33-51-88-400-002. OP CHECK GOOD IAW 51-00-710-001-A FA.