TC reported train doors at car 2645 didnot opened. Staff(CCK) checked and confirmed door A3 train d oor did not fully open. Fault did not recur at subsequent st ations. ~~~~~ Open Close speed pass: Y FOD found: N Door cycle 20x: Y Rubbing marks: N Door Push/Pull force: 9.5Kgf Door mating gap: 64mm    Check Door Lock Switch red line when door closed -satis Door Lock Switch Cushion Rubber intact: Y Door Close Switch distance from actuating plate - 15mm Door Wobble: Y Rectification Actions: Checked and found #2645 A3 RHS outer roller damage. Replaced both roller RHS and LHS to iron roller. Security and function check-ok. Door static test-ok. Checked J-rail and guide rail, FOD, door rubbing mark, DLS and DCS and DCD checked okay. Done by: Saini and Morgan