As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN EMER LIGHTS TEST FAILED. FAULT READS "EPSU RT EXTERNAL LOAD". BIT TEST EPSU RT, UNABLE TO RUN TEST. EPSU NOT POWER UP. RELAMPED OVER WING EMER LIGHTS ON RT WING FAIRING(2 EA.). RE-SEATED BATTERY PACK AND ACPD EMER LIGHTS TEST. OP CKS GOOD. EMER LIGHTS TEST FROM CIDS PNL OP CKS GOOD.