What was found
SAFA INSPECTION FOUND FLOOR PROXIMITY LIGHTNING AT SEATS 30, 31 AND 32 INOP ON BOTH SIDES. FULL EMERGENCY LIGHT GROUND TEST SHOWS FAULT 33-11624 LOCKED FOR MX FERRY SLAVED WCU 26 FROM SEAT 39D INTO WCU 24 POSITION AT SEAT 22D, NO JOY. INSTALLED WCU IN ORIGINAL POSITION. DMC-B787-A-33-51-07-01B-720A-A FOUND BROKEN WIRE AT SEAT 30 FLOOR PROXMITY LIGHT.REPAIRED THE WIRE BUT NO HELP.NEEDS MORE TROUBLESHOOTING.REF AMM 33-51-06. MATERIALS UPDATE UNLOCKING TROUBLESHOT SYSTEM REF FIM 33-50-F1-C5A-421A-A. REMOVED AND REPLACED WELS CONTROL UNIT BATTERY AT M3351WG04 REF AMM 33-51-07-02B-720A-A. PERFORMED SYSTEM VERIFICATION TEST REF AMM 33-51-00-07A-343A-A.