Train doors at Front DT car were not proven closed. TC recycled train doors twice - ok. Staff(SBW) c hecked and confirmed no train Front DT A4 door small gap - p ush close to clear fault. Staff(SBW) later isolated Front DT ~~~~~ Check and found FC083 CLE occur twice Open Close speed pass: Y FOD found: N Door cycle 20x: N Rubbing marks: N Door Push/Pull force: 9kgf Door mating gap: 64mm Check Door Lock Switch red line when door closed (should be at half or at most flushed with the step) - satis Door Lock Switch Cushion Rubber intact: Y Door Close Switch distance from actuating plate: 15mm Door Wobble: Y Rectification Actions: Found 3615 A4 LHS door outter roller damage. Replaced both LHS and RHS roller to iron roller. Conducted door staticand cyclic test-satis Done by:Haslan and Asruddin