hifi engine

Audio Dynamics CD-2000E Parts Listing or Service Manual Needed

Hum emanating from underneath the CD drawer, even when the unit is switched off. Also, the CD drawer will not open or close completely by itself anymore--I need to help it. A parts listing would help me understand how the unit works. And a service manual might be of more assistance. Any help would be greatly appreciated. Merry Christmas! Happy Hanukkah! A Wonderful Kwanzaa!