hey everyone i’m sitting here trying to adjust settings on my 2001 volvo s40 1.9t on the car radio which is a hu-615. few things, how do i turn dolby prologic on, what does ej+ entry mean, what does voice lch/rch mean, what does beep and dtc check mean, af-c adjust, diver test, pll lock, pi, pool status, tp search. sorry that’s a lot but i’m so confused and i’m trying to figure it out. the things i’m most trying to figure out is how to turn dolby prologic on and ej+ entry and voice check. if anyone knows how to figure these out or knows what to do please help.