Train doors at car 3623(B2) were not proven closed. TC recycled train doors once - ok. Staff(CCK) fo llow train, Fault recur at BGB. Staff(CCK) isolated in close d. Train doors at car 3623(B2) were not proven closed. TC re ~~~~~ Check FC-940/953/946. Checked door gap was 1392mm when door full open-out of criteria. Both side door stopper was installed wrongly. Re-install door stopper and adjusted door open gap to 1402mm-ok. Replace both rollers to iron rollers. Swapped DCP from B2(S/N:1405W020041S014) to A2(S/N:1503W020011S044). Mating strip, push/pull and DLS red line within criteria. Door cyclic and static test-pass.

Done by: Sanip and Koh