What was found
EMERGENCY EXIT LIGHTS ASSOCIATED WITH BATTERY PACK M1668 ; EMERGENCY EXIT LIGHTS ASSOCIATED WITH BATTERY PACK M1668 ARE INOP / [01] PARTIAL UPDATE TO STEP 1; [02] REPLACED M1668 BATTERY AND PERFORMED SATISFACTORY TEST OF REPLACEMENT BATTERY PER AMM 33-51-06-960-805 TO STEP 4.D(6)(C); NO DEFECTS NOTED.; [03] VERIFIED CORRECTIVE ACTION ITEM 2. VERIFIED IT IS OK TO RE-INSTALL L/H #17 RETURN AIR GRILL IAW AMM 05-41-02.; [04] PARTIAL UPDATE TO STEP 1; [05] VERIFIED ACCOMPLISHMENT OF STEP 1. FAULT TTG8Q00ACZ71 IS COMPLETE.