Pax feedback to Staff (YCK) train door #7 did not opened. Staff (KTB) checked and confirmed all trai n opened. No other abnormalities. ~~~~~ 1616 Pax feedback to Staff (YCK) train door #7 did not opened. Staff (KTB) confirmed all train opened. No other abnormalities.  1616 A3 door checked/found both LHS & RHS outer/inner door rollers worn/damaged. Replaced both LHS/RHS inner/outer door rollers. Function check - OK. Door gap = 64mm. No FOD found. Door cyclic test - OK, no DIR lit up. Door open/close timing - OK. All doors proven closed. Checked weather strip condition & cleaned J-rail/guide - OK.  Sarma/Alan/Shafie/Lee PT/Kamarul 45022