As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STATUS MESSAGE: EMERGENCY LIGHTS ON, BREAKER U3 TRIPPED. R & R K198 RELAY IAW ESPM 20-39-00 AND R & R PS37, PS38 AND PS43 BATTERY CHARGERS AND PS37 BATTERY IAW AMM 33-51-17-000/400-801. PERFORMED OPERATIONAL TEST OF THE EPSU IAW AMM 33-51-17-710-801 NO DEFECTS NOTED. SDR CLOSED.