Train doors at car 3674 'A4' were not proven closed. TC recycled train doors few times- ok. Staff(AD M) checked and confirmed no train doors abnormalities. Faultdid not recur at subsequent stations. ~~~~~ Train doors at car 3674 'A4' were not pr #3674-A4 door check and found RHS/LHS outer roller was damaged.Replacement done and door function test,cycle test & static test are ok. Done by Din/Kumar.  05/07/24