Train doors at Front M1 car 'A1' side were not proven closed. TC recycled train doors few times - ok . Fault recur at NEW2. TC recycled train doors once - ok. ~~~~~ #1603-A1 saloon door found door rollers damage from LHS & RHS. Replaced rollers and function door test ok. Check mating strip, DSS, Red line present and push/pull ok. Static door check ok. Done by Koh/Sanip. 12/03/23.