As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AN OVERNIGHT LINE CHECK, THE EMERGENCY ESCAPE PATH LIGHTING FROM ROWS 31 AND AFT WERE FOUND TO BE INOPERATIVE. MAINTENANCE REPLACED EMERGENCY LIGHT POWER SUPPLIES M736 AND M737 WHILE ALSO SWAPPING THE CONTROL PINS ON THE SEAT MOUNTED EMERGENCY LIGHT MODULE M10765. THE SYSTEM OPERATED NORMALLY AFTER THE POWER SUPPLIES WERE REPLACED AND THE PINS CORRECTED ON THE LIGHT MODULE.