Train Prep 3638 BCU Fault. 3638 Brakes unable to be released.
FC314 BCU Control Pressure Fault
FC308 BCU Fault
FC330/331 BCU BCP Fault Bogie 1,2. ~~~~~ Train Prep 3638 BCU Fault. 3638 Brakes unable to be released. FC314 BCU Control Pressure Fault FC308 BCU Fault FC330/331 BCU BCP Fault Bogie 1,2.  #3638 Replaced ACU due to brake unable to release. Conducted function check and brake cyclic test - ok. S/N Old - 15403003 S/N New - 1543082 Notif to CSC - 2607646 Done by: Kumar/Sufian/Din/Morgan 45456