TIMS showed rear M1 car B4 door when opening train doors Obstructed motion detected. Staff (AMK) wasunable to isolate train door. Staff escorting train at Rear M1 car B3 door to JUR. TIMS showed rear M1 car B4 door when  ~~~~~ 1610 TIMS showed B4 door when opening train doors Obstructed motion detected. Staff (AMK) was unable to isolate train door. Staff escorting 1610 B4 door to JUR. CE: 1610 B4 check n found been isolated. Follow train to Jurong.  1610 B4 RHS outer door roller delaminated - Replaced. Tested door operation for Open/Close - OK. Kamar/Alan/Shafie 45141