As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS AROUND DOOR 3R GOES OFF AFTER FEW MINUTES BEING TESTED. TROUBLESHOOTED PER FIM 33-51 TASK 806 AND FOUND EMERGENCY POWER SUPPLY M33401 WITH BATTERY DISCHARGED. REPLACED BATTERY PACK OF POWER SUPPLY M33401 PER AMM TASK 33-51-06-960-802. LIGHTS OPS TESTED SATISFACTORILY.