TC reported car 3674 1st pair saloon door did not open. Staff(BDL) checked, confirmed no abnormaliti es. Staff(CBR) checked, no abnormalities. TC reported car 36 74 1st pair saloon door did not open. Staff(BDL) checked, co ~~~~~ 3674 TC reported 1st pair saloon door did not open. Staff(BDL) checked, confirmed no abnormalities. Staff(CBR) checked no abnormalities.  3674 A1/B1 doors performed the following checks : Check fault code: No FC recorded FOD found: N Weather strip condition ok: Y Removed door checked roller condition ok: N, 3674 B1 LHS outer                                                roller delam, 3674 A1                                            RHS inner roller                                                 cracked Clean J-rail & guide rail: Y Push/pull door smooth & no wobble: Y, after rectification Door cyclic test 20x, DIR extinguish ok: Y, after rectification TIMS door static timing test pass: Y, after rectification Door lock switch red line flush with surface for positive latching: Y Door close switch actuating plate distance ok: Y Rectification action: Replaced #3674 A1 and B1 door rollers to iron rollers.  Aliff/Daniel/Redzwan 45308