As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A ROUTINE OVERNIGHT MAINTENANCE SERVICE CHECK LAS VEGAS MAINTENANCE REPORTED THAT THE ELECTROLUMINESCENT EGRESS PATH LIGHTING WOULD NOT TEST BETWEEN ROWS 21 AND 24. FURTHER REPORT THAT TIGHTENED THE ELECTROLUMINESCENT STRIP ELECTRICAL CONNECTION. A SATISFACTORY OPERATIONAL TEST WAS ACCOMPLISHED PER AMM 33-53-00. THE AIRPLANE HAS RETURNED TO SERVICE.