As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN R1 DOOR EXIT SIGN FAILED TO OPERATION REF HAECO NON-ROUTIN E NO.:9476534,ORIGINATED BY EMP V905376,SPEC NO.B777-33-3-7030. R1 DOOR EMERGENCY (M33094) POWER SUPPLY REPLACED AND SET THE TEST SWITCH TO ON MODE FOUND R1 DOOR EXIT SIGN LIGHT COME ON AS PER AMM 33-51-06-960-802 REV100,IDT