TC reported Front DT-3636 A2 train door unable to open. ~~~~~ TC reported Front DT A2 train door unabl   Checked and found 3636 A2 door 2 main rollers delaminated. Replaced and function test ok. Doors able to move smoothly. Conduct door operation and cyclic test satis. N.AKUMAR/HASZHAN/KWOK/10.08.23