As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAINTENANCE FOUND THAT THE AFT CABIN EXIT IDENTIFIER FAILED TO ILLUMINATE DURING THE SERVICE CHECK. TROUBLE SHOOTING PER WD 33-51-12 FOUND THE EMERGENCY LIGHT BATTERY PACK WAS INOPERATIVE. THE BATTERY PACK WAS REPLACED PER B717 AMM 33-51. OPERATIONAL CHECK WAS GOOD. (LP #8919523)