As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CABIN EMERGENCY LIGHTS ILLUMINATED WITH FLIGHT DECK SWITCH IN ARM POSITION. CHECKED POWER AND GROUND INPUTS AT EMERGENCY POWER SUPPLY UNITS ELECTRICAL CONNECTORS 3351-P5 AND 3351-P6 WITH FLIGHT DECK AND F/A EMERGENCY LIGHT SWITCHES IN ALL POSITIONS. (REF WDGM 33-51-00) POWER AND GROUND INPUTS CHECKED GOOD. REPLACED POWER SUPPLY UNIT 3351-PS3 IAW MM TASK NR'S 33-51-01-000-801 AND 33-51-01-400-801. SECURED AND SAFTIED ELECTRICAL CONNECTORS 3351-P5 AND 3351-P6. EMERGENCY LIGHT SYS OPS TEST GOOD SEVERAL TIMES IAW MM TASK 33-50-00-710-801. RETURNED TO SERVICE.