TIMS showed Front DT A1 door was not proven closed. TC recycled train doors once to clear fault. Sta ff (PNR) check and confirmed no obstaclesnor obstruction, however Front DT A1 door was slow in closing. Staff (CNG) su ~~~~~ FOUND #3656 A1 DOOR ROLLER FAULTY.REPLACE WITH NEW ROLLER DONE.FUNCTION TEST DOOR OPERATION AND SECURITY CHECK OK.CONDUCT DOOR OPEN/CLOSE CYCLIC TEST AND MONITOR NO ABNORALITIES AT TIMS.SRIDHAR/IBRAHIM/HAIRUL S 07.02.2024