As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A MAINTENANCE VISIT, THE EMERGENCY FLOOR PROXIMITY LIGHTS AT ROWS 35 THROUGH 65 ON THE RIGHT WERE FOUND TO BE INOPERATIVE. MAINTENANCE REPLACED THE BATTERY IN THE POWER SUPPLY. SYSTEM OPERATION WAS NORMAL AFTER THE BATTERY WAS REPLACED.