As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY EXIT SIDE LIGHTS AT L2 AND R2 DOORS, SEAT MOUNTED EMERGENCY ESCAPE PATH LIGHTS AT ROWS 9 THROUGH 15, AND FLOOR PROXIMITY LIGHTS AT L2 LAVATORY AND R1 GALLEY ARE INOPERATIVE. AIRCRAFT WAS GROUNDED. REMOVED AND REPLACED CONTROL MODULE AND BATTERY PACK IAW AMM 33-51-07. OPERATIONAL CHECK GOOD.