As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CHECK THE EMERGENCY LIGHTS, FIND THAT THE AISLE LIGHTS AT STA1582 & 1666, RBL51 NOT COME ON. REPLACED THE CABIN 3R DOOR AREA M33401 BATTERY & POWER SUPPLY AND OP TEST CARRIED OUT, FOUND NORMAL AS PER AMM 33-51-06-960-802 REV 81 & AMM 33-51-06-960-803 REV 81.