I have a Sony MHC-1600 mini Hi-Fi system. I have not used the CD player for some time and the drawer will not open when the button is pressed. Any suggestions for correcting this fault?
Ok, sounds like you'll need a service manual then, and be prepared to do some measurements.
Here's a place that only seems to require a registration to download it: www.nodevice.com/manual/newmans/600/SONY_MHC1600_Service_Manualpdf
I'd open it up and try to move the drawer motor by hand, and measure if it gets any voltage.