Rear DT car brake fault when train departing station. STBS operated. Proceed in ATPM to the next sta tion. ~~~~~ 667/668-ER download from RSD PTU006 Fault code: 308, 314, 330, 331, 312. ER show #3667 stuck brake at EM at 1815hrs. #3667-BIC was normalised and #3668-STBS was operated by TC when in depot. When #3667 entering in pit 16, stuck brake occurred and no line    voltage. Checked by Zulqarnian. 13/06/20.     #3667 Checked from Tims fault code 308, 314, 330, 331, 332. Downloaded ER and further check found ACU hunting when EM. Replaced ACU and function check ok. Brake cycle test are ok. ACU- Old s/n: 1511-039.  New s/n: 1451-026. Notification: 2169658 raised to RSW. Done by Jack/Sateesh/Koh. 14/06/20.