TC reported obstacles detected at Rear DT car B1 door when train doors open, fault extinguishes whentrain door closed. Staff (LVR) checked and confirmed no abn ormalities. ~~~~~ CHECK AND CONFIRM #3630 B1 ROLLER CONDITION WEAR AND TEAR BADLY.CHANGEOUT ROLLER OK.SECURITY CHECK OK.PERFORM DOOR CYCLIC TEST    OK.DOOR ABLE TO OPEN/CLOSE SMOOTHLY. SHAIK/HAFIZ/ZOHRI/YUSRI/SURENDAR 30.01.2024