Passenger feedback at Real time feedbackthat there was a squeaking sound heard on the train door. Station (YIS) confirmed there was squeaking sound heard whenthe train door was opening and closing but it was opening a  ~~~~~ Passenger feedback at Real time feedback     #3560 function test door operation on all 8 doors found #3560-A4 door with squeaking sound.Re-adjusted back close & open door speed and function test A4 door ok-No squeaking sound-cleared. Done by Henry/Kamal. 22/05/20