As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN OVERDOOR L1 EMERGENCY LIGHT POWER SUPPLY LOW BATTERY (M33093) REF HAECO NON-ROUTINE NO.9493696 - ORIGINATED BY EMP V905400,SPEC NO.B777-33-3-7019. PERFORMED BY EMP V905400, IDT BY EMP V905467, REPLACED CABIN OVERDOOR L1 EMERGENCY LIGHT POWER SUPPLY BATTERY PACK, AND PERFORMED THE LIGHT TEST,THE RESULT FOUND NORMAL REF AMM 33-51- 06-960-802 REV.96.