TC feedback front DT car A2 door slow inclosing. Staff(BNV) monitored for 3 stations and confirmed no abnormalities. ~~~~~ 3545 A2 door had been isolated and tagged. Normalized. Carried out door operation several times, found A2 door to be OK. Found A3 door to be slightly slow. Adjusted closing speed and synchronized doors. Function test, OK. N.AKWOK.K.T/02.01.22 --------------