A led doesn't light up in sequencer mode

Hello,

I finished building a smr4 mkii kit, and i can see that when i press S5 to go in sequencer mode, and press S4 to switch pages between Tuning Midi and System, S4 led doesn’t light up but i can scroll thru Tuning Midi and System. S4 led works while in synthesis mode.

Is it normal behavior or i should look closely somewhere ?

Thanks !

Bleh it works … Weird didn’t do anything