As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT HEALTH MONITORING ALERTS RECEIVED FOR THE WIRELESS EMERGENCY LIGHTING SYSTEM. REMOVED AND REPLACED THE CONTROL UNIT AT THE L4 DOOR IAW DMC-B787-A-33-51-07-00A, AND RELOADED THE CONFIGURATION SOFTWARE IAW DMC-B787- 33-51-07-04A-750A-A. OPS CHECKED GOOD.