Train doors at FM1 car were not proven closed. TC recycled train doors once - ok. Fault did not recu r at subsequent stations. ERS-10 ~~~~~ 1514 Train doors were not proven closed. TC recycled train doors once - ok. Fault did not recur at subsequent stations. Depot check door function.  1514 checked/found the following door dollers pitted : A1 - RHS & LHS B1 - LHS B2 - LHS A3 - LHS B4 - LHS OPS 20 raised to change-out door rollers.  Celine Tan 44960 TO CONTINUE RECTIFICATION.  1514 replaced the following door rollers : A1 - RHS & LHS A3 - LHS OPS 30 raised to replace the o/s door rollers.  Alan/Lee PT/Anand/Kamarul 44961 To Continue c/out rollers.  1514 replaced the remaining door rollers: B1/B2/B4 all LHS door rollers. Security/function check door open/close - OK. No DIR illuminated when doors were closed.  Alan/Lee PT/Kamarul 44962