TC reported cab door unable to fully closed when depress the closing button. TC push closed the cab door to closed fully. ~~~~~ 3674 - TC reported cab door unable to fully closed when depress the closing button. TC push closed the cab door to closed fully.  Found #3674 A/S cab door roller guide rail screw loose, tighten and secure ok. Function test ok. Dit and Dmi check ok. Done By:Jack/Koh Date:06/11/2023