What was found
EMERG LIGHT SWITCH: EMER LIGHTS DO NOT ILLUMINATE WITH SWITCH IN ARM AND BATTERIES OFF. RECEIVED REPAIRED BATTERY CHARGER SYSTEM (EMER BATTERY) P/N: CBS28-1 S/N: 0593M FROM THE CUSTOMER. GAINED ACCESS, REMOVED #1 EMERGENCY BATTERY PACK UC019 P/N: CBS28-1 S/N: 008255 DUE TO INTERNAL FAILURE, AND INSTALLED REPAIRED EMERGENCY BATTERY PACK P/N: CBS28-1 S/N: 0593M I.R.W. CE-700 AMM 33-50-07. ALLOWED BATTERY PACK TO CHARGE AND PERFORMED EMERGENCY LIGHTS OPERATIONAL CHECK I.R.W. CE-700 AMM 33-50-00 AND THE CHECK WAS FOUND SATISFACTORY