My pad 1 plays pad 10 an 16 same as 6 plays 2 random

How do i stop pad 1 play 4 5 7 8 an so on i press 4 it plays 1 8 1 5 try rebooting doesnt work please help cant fix open to any answer the more the better and there is nothing on here saying how to fix they just say clean the pads an senors. HELPP PLESASE cant make phat beats ........

does mpc 1000 or 2500 have simult?

if so thats what it sounds like