As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT MX - ONT - 1A CHECK - WHILE PERFORMING OPS CHECKS ON EMERGENCY LIGHTING SYSTEM IN CABIN, QC INSPECTOR FOUND FWD CEILING PANEL MOUNTED OVERWING EXIT SIGN DOES NOT FULLY ILLUMINATE. MAINTENANCE PERSONNEL REMOVED AND REPLACED FWD CEILING EXIT LOCATING SIGN ASSY. OPERATIONALLY CHECK SATISFACTORY AND ACFT WAS RELEASED TO RETURN TO SERVICE. TSN: 7747 CSN 4219. (S)