TIMS showed"Door Close Operation TimeOut, Front DT Car A1 Door"after train departed NOV2. Staff(SOM) checked and confirmedno abnormalities. ~~~~~ TIMS showed  "Door Close Operation Time     Check Tims observed multiple Times door close time out. CLE,ER and fault trace downloaded in PTU 007.Mating strip check ok.Push/pull resistant LHS-8.5kg,RHS-9.5kg.No FOD observed.Clean J-rail and redo push/pull both side 5.5kg.DLS check ok.DSS found 15.5mm ,readjust to 14.7mm function test door open/close ok.Door cycle 50x ok.D static test ok. Done by Sanip/Koh  03/02/21