As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING LINE CHECK, MX FOUND THA THE EMERGENCY PATHWAY LIGHTING IN ROWS 18-21 OF THE CABIN AND THE AFT LAVATORY WALL LIGHT WERE INOPERATIVE. MX REPLACED THE BATTERIES AND THE POWER SUPPLY. THE LIGHTS RETURNED TO AN OPERATIONAL CONDITION. (K)