SA (YIS) reported train door #7 did notopened. HHPSD opened. SM (SBW) checked and confirmed all tra in doors and HHPSD were opened. SA (YIS) reported train door#7 did not opened. HHPSD opened. SM (SBW) checked and confi  ~~~~~ 3632 SA (YIS) reported train door #7 did not opened. HHPSD opened. SM (SBW) checked and confirmed all train doors and HHPSD were opened. CE: 1632-A3 door unable to open  1632 CHECK NO FC. Further check found 1632 A3 door LHS outer roller delaminated. RHS ok. Replace roller done. Service Guide rail/Jrail no sign of FOD. Check door matting within criteria. check DLS    Red mark ok. DLD rubber cushion ok. DCS to plate within criteria. Push/pull ok. Conduct door cyclic and static test within criteria. Done by Saini/Haslan 45257