This will "Blank Out" the Radio Station's Frequency [Numeral(s)] designation(S)
on the screen and activate the Treble/Bass controls use as Regulators for
Right/Left control.[Treble is Rightward/Bass is Leftward].
If you don't use the T/B R/L controls in a few seconds (10 ?) the screen reverts
to the Radio Station's Frequency Numbers.
(At least that's how my Becker works,yours may differ.)
Or you may call Becker in the Morning.
http://www.beckerautosound.com/