TC feedback TIMS showed rear DT car B1 doors were faulty. Staff(BSH) check and feedback no abnormali ties found. ~~~~~ TC feedback TIMS showed rear DT car B1 doors faulty.   Checked #3633 B1 door FC932. Physical function cx found heavy vibration. Replaced LHS and RHS outer roller and serviced guide / J-rail. Function tested satis. Done by Zul and Saini.