Train doors unable to close in all modes. TC changed end to north cab and closed train doors - ok. T hereafter when train tried to depart in all modes, EB kept t ripping with ATS alarm showed obstructed motion. TC was auth ~~~~~ L3 623/624 from ER & station CCTV footage, postulate that the train was unable to move due train doors unable to close.
From ER, #3624 B/S door open command was activated the
entire period.
Measured #3623 DCRA-2/DORA-3, #3624 DCRB-1/DCRB-3/DCRB-4 & DORB-2 - Satis.
Replaced the above-mentioned relays as preventive measure.

 Kwa ZY
07/03/2022