A. Please make sure the accompaniment mode is switched on for the chords for the accompaniment to work.
On the LK-S250, the process is below:
1. Press the left button under the LCD screen to go to Rhythm mode.
2. Press the right button under the LCD to switch on the Accompaniment mode.
Then, when you play a chord (in the accompaniment area of the keyboard) the chords and rhythm should sound.