As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING EMERGENCY LIGHT TEST FOUND DOOR R4 AREA EMERGENCY LIGHT N OT ILLUMINATED(M33408). NOT ILLUMINATED - ORIGINATED BY EMP V905 467 ON HAECO NR 9491445, SPEC NO.B777-33-3-7030. PERFORMED BY EMP V905400, REPLACED DOOR R4 AREA EMERGENCY LIGHT BATTERY PACK, AND PERFORMED THE TEST, THE RESULT FOUND NORMAL. R EF AMM 33-51-06-960-802 REV 95.