As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX - EEL - DURING 4-DAY CHECK EMERGENCY LIGHT TEST AT FORWARD FLIGHT ATTENDANT PANEL FAILED DISPLAYING MESSAGE -L COMM FAULT-. MAINTENANCE REMOVED AND REPLACED FORWARD LT EMERGENCY LIGHT BATTERY PACK AND EMERGENCY POWER SUPPLY UNIT (11WL), OPERATIONAL CHECK WAS GOOD.