SM(SBW) reported that external DMI for front M1 and front M2 car did not light up when train doors o pened at platform. Staff (KTB) checked and feedback confirme d there was no external DMI lighted up for Front M1 car and ~~~~~ SM(SBW) reported that external DMI for f        Check #1566-A & B side,#2566-A side exterior door indicator light not working.Replace #1566-B side door indicator light.Unable to replace #1566,#2566-A side due to non-platform side. 0020 raise to follow up. Done by Asruddin/Sufhian/Imran. 20/02/22 1566/2566 A side exterior light to C/O #1566 & #2566-AA side exterior light replace and function test ok. Done by Haslan/Asruddin. 22/02/22