TC reported obstruction detection at Front M2 car A4 door. SM(MSL) checked and confirmed Front M2 A4door did not open. ~~~~~ 2634 TC reported obstruction detection A4 door. SM(MSL) confirmed Front 2634 A4 door did not open.  2634 A4 door performed the following check : No FC FOD found: N Weather strip condition ok: Y Roller condition ok: No (2634 RHS delaminated) Clean J-rail & guide rail: Y Door cyclic test 20x, DIR extinguish ok: Y TIMS door static timing test pass: Y Door lock switch red line flush: Y Door close switch actuating plate distance ok: Y Changeout damaged and other rollers to new type rollers.  Huzzaidi/Abdillah/Hairi/Faizal 45438