Train unable to proceed in ATPM, when prompted further, TC feedback MCH stuck. Train continued in AMout of station. ~~~~~ DLP ended on 29 OCT 2019.     When MS was put to forward & reverse, MCH able to move from B3, B2, B1. But MS was at coded (ATPM), MCH stuck at 715 & 716. Removed the master controller cover and checked for any FOD or dust. Cleaned up and apply grease and re-aligned the cam s/w mechanism by loosening the two bolts. MCH able to move freely in forward, reverse, ATPM. Retightened and did security check and function tested ok. Done by Sanip/Omar/Hakim. 03/01/20.