Train doors at car 3534 were not provenclosed. TC recycled train doors once - ok.ubsequent stations. ~~~~~ NO FOD observed in guide rail.10/20mm door gauge test pass.Found A2 door open/close speed fast compare other door,adjusted ok.DIR 1/2/3/DLR and COR6 check ok.DSS check ok.Remove door leaf check door roller no observed wobing.Door static test ok.Further check found door latching mechanism having 6mm gap space in between while isolation cock activated and cause DIR lit.Add shim on latch stopper of door driving bracket and function test ok.Door cycle ok.

Done by Koh/Sanip. 31/01/22