EB tripped when train was departing station. TC reported obstacle detected at 'A2' door of front M1 car. TC reset EB and proceeded in AM to the next station. Fa ult did not recur at the next station. ~~~~~ EB tripped when train was departing stat     #1615-A2 door before cleaning do push/pull resistance & wobbling test-ok.Check mating strip,OK.DLS red mark not visible.Remove door and change bearing roller on both door due to spolt. After cleaning done Push/pull resistance,Mating strip,DLS red mark,DCS,DLD function test all within criteria.Door opening/closing/timing/Static test-all pass.No FOD and door rubbing mark found. Done by Haslan/Johari. 25/01/23