DT557/558: UndershootLDC Logs shows signs of Brake Blending at time of faults. Time: 1753Hrs (TAM1), 1806Hrs(SIM2) & 1825Hrs(LVR2) Request RS to check for abnormalities during time of fault. ~~~~~ 557/558 : Undershoot - LDC Logs shows signs of Brake Blending at time of faults. Time: 1753Hrs(TAM1), 1806Hrs(SIM2) & 1825Hrs(LVR2). Request RS to check for abnormalities.  557/558 checked time slots for any sign of brake fault from fault record - OK. Checked all cars BCU diameter setting - OK. Brake pressure checked - OK. Physically checked brake units application/release application & found #1557 B2 parking brake unit slow in releasing from B1 to COAST. Notif. 2268057 raised to RSW to C/o.  Ridzuan/Kamarul/Ridzuwan 44303 Name                          : KAMARULZAMAN Date of Occurrence            : 17/04/2021 EMU / Equipment / Location    : 1557-B2 TREAD BRAKE UNIT Description of fault / cause  : SLOW IN RELEASING Fault Found During PM or CM   : CM    Required Rectification        :Required Servicing