Introduction from The Dark Nak

Hi everyone,
I am new to this forum with absolutely no knowladge in maintaining Nakamichi CD players although I am not too bad in renovating their cassette decks. I came here to find some teacher to help me to maintain my Nakamichi CD player MB-2, MB-1S and MB-4S. I am particulatrly interest in the test unit to calibrate these CD players. Thanks for reading.