TC reported unable to proceed in ATPM mode due to MCH jam. TC proceed in AM mode to next station. ~~~~~ 3633 checked & confirmed MCH unable to move when MS is at ATPM. MS to other modes, MCH able to move.  Farreze. 07/03/2020.  3633 retightened all mounting bolts to 6NM for MS & MCH. Re-aligned master controller cover plate. Function test MS & MCH operation - OK.  Ridzuan. 07/03/2020.