Led 6 blinks

Hi to all mates, This is my first post. I have finished control board of shruthi 0.7 till step 11. Ihave made the test ( without the LCD) and the 3and 7 leds stay lit as they have to do. I push the bottons and the leds change status on off. All but led number 6 that blink. It doesn’t stay lit. Or off or blinking. is it correct, or I have some problems?

LED 6 is the mod matrix LED. It blinks according to the modulation you are editing.

Hi, thanks for the replay. so all ok, can I go on.
It’s very interesting also if my skill is not the best.