As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING OPERATIONAL CHECK OF EMERGENCY LIGHT SYSTEM ON A LINE CHECK, 3 EMERGENCY COVE LIGHTS WERE FOUND NOT ILLUMINATING. EMERGENCY LIGHT POWER SUPPLY 20LN WAS REPLACED AND SYSTEM TESTED SATISFACTORILY. AIRCRAFT WAS RETURNED TO SERVICE.