3704 BCU Fault. To check & rectify. (Tra ~~~~~ To further rectify.  3704 bogie #2 RIO v/v replaced. Function check & self test check - OK. Limited movement/depot shunting - OK. #3704 RIO V/v S/N : OLD : 1650010 - SPC NEW : 1941115 - SPC  Farid/Salleh/Koon PL 44236 3704 - BCU Unit unhealthy. (Train Prep)  3704 KB EP2002 log D/L. Found #3704 bogie #2 smart v/v detected brake cylinder leak >1 bar/min. OPS 20 raised to follow-up.  Kana 44235