train prep found #1503 BCU com fault to ~~~~~ train prep found #1503 BCU com fault to rectify   Found 1503 having BCU comm fault FC307/301. Found BCU earth cable (PL3) broken. Repair new cable lug and tested satis. Replaced BCU for preventive. S/N: 1809049 (N) 1812100 (O) Notification to CSC: 2549203.