K8038 trouble to be set brightness

As kit manual, when the kit is enabled memory function to mount the jp1.
I did to set the brightnessas according to setting minimum brightness on kit manual.
It seems to be not controlled by push button although turn on the both LED.
However it was controlled by push button after normal start.
When i press manually the push button to control brightness after normal start that is well changed.
So at this moment, i don’t know what i should check kit.
Could you let me know what i should do on this trouble.