As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - EMERGENCY LIGHT INOP AT CABIN AFT OVERHEAD AND OUTSIDE RIGHT AFT, AND CABIN CENTER EMERGENCY OVERHEAD. MAINTENANCE REPLACED NR 4 EMERGENCY BATTERY PACK AND PERFORMED OPERATIONAL TEST OF THE EMERGENCY LIGHTS SYSTEM, IAW DASH 9 AMM 33-51-01-710-801, OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.