I have the above phone system in which one of the phones has a LED readout for programming. I have searched the manual paper and online and can't find how to get my display back. I know there is a way to change the display to be darker and lighter but for the life of me I can't find it now and oops somehow sending calls here and there, I lost my read out and I'm hoping I can get it back... Anyone???? Help...

Thanks in Advance!
Kathy in WI