As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT MAINTENANCE - ONT - WHILE PERFORMING 3A CHECK INSPECTION ON EXIT SIGN ON ROW NR 1 IT DID NOT ILLUMINATE. MAINTENANCE REMOVED AND REPLACED EMERGENCY AND LIGHT SIGN. OPERATIONALLY CHECKED SATISFACTORY AND ACFT WAS RELEASED TO RETURN FOR SERVICE. (S)