Train doors at Front DT car A1 side werenot proven closed. TC recycled train doors once - ok. Fault did not recur at subsequent stations. ~~~~~ 3625 A1 Train doors were not proven closed. TC recycled train doors once - ok. Fault did not recur at subsequent stations.  3625 A1 door found FC 010/016/023. 1) Check history DCP swapped before & date: 5 July 2023 2) Check fault code: 3625 A1 door, FC 010, 016 & 023 3) Download ER & Fault Trace: TC cycled door once to clear fault 4) FOD found: N 5) Weather strip condition ok: Y 6) Roller condition ok: Y 7) Clean J-rail & guide rail: Y 8) Push/pull door smooth & no wobble: Y 9) Door cyclic test 20x, DIR extinguish ok: Y 10) TIMS door static timing test pass: Y 11) Door lock switch red line flush with surface for positive        latching: Y, adjusted slightly downwards. 12) Door close switch actuating plate distance ok: Y Postulate FOD self-dislodged.  Jonathan Koh WC 45119