Train doors were not proven closed.Staff(AMK) checked and feedback that car 3613, 'A4' door was pa rtially opened when all train doors were opened. SM(YCK) che cked and feedback that the train door was opened and closed ~~~~~ Train doors were not proven closed. Staff(AMK) checked and feedback that car 3613, 'A4' door was partially opened when all train doors were opened. SM(YCK) checked and feedback that the train door was opened and closed. CE: T402-3613 A4 Door Isolated and Sticker Pasted  3613 A4 door fault code:086, Further check found A4 door LHS was wobbly, RHS was ok. Found 3613 A4 door LHS outer roller delaminated. Repalce roller done. Conduct Push/Pull ok. Check door guide rail, Jrail ok. DLD rubber cushion, DLS red mark nut secured. DCS to plate ok, Door matting ok. Door cycic ok, Door static test ok Done by Haslan/Zulq 08.08.23