Train doors at car 2627 B4 door were notproven closed due to bag stuck. TC recycled train doors onc e - ok. Fault did not recur at subsequent stations. Train do ors at car 2627 B4 door were not proven closed due to bag st ~~~~~ FOD FOUND-NO.WEATHER STRIP/ROLLER CONDITION ALL OK .CLEAN  J RAIL AND GUIDE RAIL -YES.10/20MM GAUGE TEST PASS-YES.PUSH/PULL GAUGE TEST PASS=YES.DOOR CYCLIC TEST 20XDIR EXTINGUISH OK-YES.IVAN CHANG  28.10.2022