As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A ROUTINE OVERNIGHT SERVICE CHECK MAINTENANCE INSPECTION LAS VEGAS MAINTENANCE REPORTED THAT THE AFT EMERGENCY EXIT SIGNS/LIGHTS ABOVE THE DOORS WOULD NOT TEST. LAS VEGAS FURTHER REPORT THE REMOVAL AND REPLACEMENT OF THE BS-105 EMERGENCY LIGHTS POWER SUPPLY BATTERY PACK. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED PER AMM 33-53-00. THE AIRPLANE HAS RETURNED TO SERVICE.