1626 - A3 DOOR UNABLE TO OPEN (TRAIN PRE ~~~~~ 1626 A3 DOOR U BLE TO OPEN (TRAIN PREP).  1636 A3 door leaf removed & checked both door leaf J-rail & rollers - OK, all in good condition. Swapped #1626 A3 DCP with #1626 B3 DCP. Function test - OK. No DIR.  Alan/Kamarul/Shafie/Sarma/Anand 44942 DCP S/N (after swapped) : #1626 B3 Door : 1503W020011S006 #1626 A3 Door : 1503W020011S016