What was found
DURING ORIGINATING FLOW WHILE TESTING THE EMERGENCY LIGHTS, 'EMER LT BATT FAULT ' EICAS MESSAGE ILLUMINATED. REMOVED FROM SERVICE. SELECTED EMERGENCY LIGHTS ON, "EMERGENCY LT BATT FAULT" EICAS MESSG DID NOT RETURN. CMC SHOWED ADVISORY HISTORY FAULT "EMERGENCY LT BATT FAULT" & EMER LT BATT (FWD R) WRG FAULT. PERFOMED E175 FIM TASK 33-50-00-810-801-A, TRANSITORY CONDITION OF THE MAU, NO FURTHER DEFECTS NOTED. RETURNED TO SERVICE.