3556-HAVING BCU FAULT DURING DT CHECK.TO ~~~~~ 3556 HAVING BCU FAULT DURING DT CHECK.  3556 ER D/L - Done. ACU replaced & function check - OK. Brake cyclic test - OK. No residual pressure at COAST. No air leak. Limited movement/depot shunting - OK, no fault occurred. 3556 ACU S/N : OLD : 1034/013 NEW : 1331/066 Notif 2189482 Name:Sarma(Team S/RSD/UPD) Date of Occurrence:14/08/2020 Last Service Date:Nil EMU / Equipment / Location:555/556 / DT Car ACU / 3556 Equipment Serial No. (if any):(New:1331/066)(Old:1034/013) Description of fault / cause:Fault Code 306/308 Measurements (if any):Nil Required Rectification: Requires servicing  Sarma/Anand/Kana 44057