TC reported train doors at front M1 carwere not proven closed. Opened and closed train doors once t o clear fault. ~~~~~ TC reported train doors at front M1 car     #1669 FC 953-Saloon door B2 close operation time out.CLE x1 Door mating 63.7mm,DCS to pate 14.8mm.DLS red mark visible.DLD rubber cushion ok.Push/pull-5.5kg-6kg.Check & service guide rail & J-rail ok.No FOD to be found.Conduct door static test open/close within criteria.Door cyclic test few times ok.No abnormalities and reoccurance.Postuate FOD dislodged during doors cycling. Done by Zulq.  26/07/22