As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT SERVICE DOOR EXIT SIGN INOPERATIVE. TROUBLESHOT THE AFT SERVICE DOOR SIGN IAW WM 33-50-50 AND FOUND NO POWER TO PIN -M- ON P0546 FOR THE NR 4 EMERGENCY LIGHT POWER UNIT. REMOVED AND REPLACED THE NR 4 EMERGENCY LIGHT POWER UNIT IAW AMM 33-50-01, OPS CHECKED GOOD.