Marantz MA-5 amplifier level led indicator alignement

[Frank-el]

Good morning,
I own a pair of Maranz MA-5 amplifiers. The level indicator LEDs on one amplifier only light up at fairly high volumes. Does anyone know how to adjust the settings? Unfortunately, I don't have a service manual and I couldn't find any information about it. Thank you very much.

 

[Cal Weldon]

Are you able to post this in the solid state forum? This is the intro area.

 

[Frank-el]

i try later T.Y