As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS ON BOTH OVERWING AND BACK SECTION OF CENTER AISLE EMERGENCY LIGHTS COME ON AND THEN GO DIM UNTIL COMPLETELY OFF. REMOVED AND REPLACED NR 4 EMERGENCY LIGHTING ASSEMBLY IAW EMB AMM 33-50-04. OPS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE