EB was applied while departing station with DIR and DMI illuminated and TIMS showed Front M1 car 'B2 ' train doors status lost. Reset EB - ok. TC confirmed all t rain doors proven closed at RFP SB. Station staff (RFP) chec ~~~~~ EB was applied while departing station w     #1659-B2 door checked no fault code.Check guide rail no FOD.Further check found LHS door having squeeking sound.Remove door found 2 big roller faulty.Replace roller,clean J-rail,guide rail and test Push/Pull gauge (both side 4.2kg)Adjusted DLS red mark-ok.Function test DLD,DLS,DCS-ok.Conduct door cyclic test 5x-ok,door opening/closing time 3.2sec.    Done by Zulq/Asruddin. 06/01/21