As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS AND SIGNS ARE INOP WHILE ON BATTERY POWER AT L1, R2 EXITS / REF TSM 33-51-00-810-801-A. PERFORMED BITE TEST REF AMM 33-51-00-710-001. REMOVED AND REPLACED FWD AND AFT EPSU BATTERIES REF AMM 33-51-38-000-002 AND AMM 33-51-38-400-002-A. OPS CHECK GOOD"