As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - EMERGENCY EXIT SIGN AT AFT LEFT HAND SERVICE DOOR AT AL2-7 FORWARD OF DOOR NEAR FLOOR INOPERATIVE. REPLACED EMERGENCY EXIT LIGHT BATTERY PACK CONTROL MODULE AL2-7 AT AFT LEFT HAND SERVICE DOOR FORWARD OF DOOR NEAR FLOOR. SYSTEM GROUND CHECKED NORMAL OPERATION.