As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AN A-CHECK, IAW WORKCARD 2803, FOUND THE EMERGENCY LIGHT AT THE L4 DOOR INOPERATIVE. MAINTENANCE PERFORMED FIM 33-50-F1-M8A-421A, AND FOUND THE WIRELESS CONTROL UNIT DEFECTIVE. REMOVED AND REPLACED THE CONTROL UNIT IAW AMM 33-51-07. CHECKED OK FOR SERVICE.