TC reported EB applied due to 'A' side cab door opened by itself when train was departing KRJ SB. TCclosed cab door - okay. TC reset EB - ok. Train proceeded i n Auto to next station. ~~~~~ 3501 TC reported EB applied due to A/S cab door opened by itself when train was departing KRJ SB. TC closed cab door okay. TC reset EB - ok. Train proceeded in Auto to next station. CE 3501 found A/S cab door Secured and closed.EB ok. Depot 3501 A/S cab door operational check.  3501 reported 'A' side cab door opened by itself. Checked DIR - OK.    No FOD found. Open/close door checked - OK. Function & security checked - OK. No abnormalities found. Amir/Haiqal/Koon PL 45102 TO FOLLOW UP RECTIFICATION Download ER-Found EB applied & DIR dropped @1028am.-no other occurance. Further checked found latch screws loose. Replaced screw & function checked - OK. Placed torque seal- OK. All other cab doors - OK. Sarma/Alan/Kamarul/Lee PT 45102