As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE DETECTOR LAV FWD 3L DOOR FAULTING CSCP TEST. CABIN TEST STILL FAULTING SMOKE DETECTOR. REPLACED DETECTOR, NO HELP. REPLACED OEU 2-2-16, NO HELP. FOUND LAV OEU AT FAULT. RECONNECTED SMOKE DETECTOR IN LAV RAN TEST, OPS NORMAL. NO SMOKE DETECTOR FAULT. AFTER OEU SOFTWARE LOAD, OPS TEST NORMAL.