Train doors at car 2610 were not provenclosed. TC recycled train doors twice but to know avail. Sta ff(BGB) checked and confirmed car 2610 A4 no obstructions bu t unable to close. TC was authorised to operate DIRBS to pro ERS-10 ~~~~~ Train doors at car 2610 were not proven Fault is duplicated in depot. When train was in depot, the doors were jammed ajar and stiff. DIRBS was activated. From TIMS observed car 2610 FC 083 saloon door A4 Close operation TO From ER saw TC cycled doors multiple times with DIR unable to energise. Train was able to move off until DIRBS was triggered at DT 3610. 2610 A4 RHS outer roller was found to be delaminated. - Replaced main rollers on 2610 A4 RHS door. - Door operation was smooth without wobbling. Cyclic test was OK with di- Door Static test timing was within criteria. - Door push/pull resistance force satis. Done by Jack, Koh, Rizman, Sanip. 21/8/2023.