TC reported cab door close button at 'B'side cover was damaged. TC reported cab door close button a t 'B' side cover was damaged. ~~~~~ 3640 TC reported B/S cab door close button cover was damaged. ORC SB CE checked 3640 B/S cab door close button cover damaged.  3640 B/S cab door close button cover replaced. Security/function check - OK.  Aqil/Shamil 45500