DDJ-SZ - deck goes automatic in brake mode by pushing play/pause buttom

load a track into a deck, choose the first cue point on the hot cue buttoms, start with the play/pause buttom, the track start en brake immidiatatly, the play knob on the screen is not blue but stays black. in the setup menu the start time is set to fast and and the stop time is set to position 3 - when the stop time is set to fastest i have also this problem. I load the track into a deck, track start at the 1st cue point as set in the setup menu (play from statt & play from 1st cue point) - then i pressed the CUE buttom and then i push the PLAY/PAUSE buttom - By starting the deck sometimes the song stops slowly (when the brake time is set to position 2) and when the stop time is set to fast, the song started playing en stops immidiately like i pressed a second time on the PLAY/PAUSE button. When i'm holding the PLAY/pause buttom for a few seconds the song continued playing without a problem -