As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RH AFT UPPER EXIT SIGN INOP. CLEANED THE CANNON PLUG ON THE BATTERY PACK 4 AS PER ESPM 20-26-00. REMOVED & REINSTALLED THE BATT PACK 4 CEILING PANEL AS PER AMM 25-26-05. PERFORMED OPS CHECK OF THE EMERGENCY LIGHTS AS PER AMM 33-51-00. OPS CHECK PASSED.