TC reported car 3609, 'A1' door was not fully opened.SM(YCK) checked and confirmedfaulty.Stafftook videos and sent to duty CC. TC reported car 3609, 'A1' door was not fully opened.SM(YCK) checked and confirmed ~~~~~ 3609 TC reported  A1 door was not fully opened. SM(YCK) confirmed faulty. Staff took videos and sent to duty CC. Depot to check 3609 A1 door operation.  3609 A1 Door. Checked 3609 A1 Door - No FC recorded. Checked & found A1 Left A/S door outer roller delaminated. Replaced door roller.Clean J-rail guide rail. No FOD found. Weather strip - OK. Door cyclic check - OK. Door gap 63.9mm. Door open/close timing - OK. No DIR lit. All doors proven closed. Sarma/Sugu/Anand 45241