Magnavox model 1ST605R - no schematics/manual

I have a magnavox mystique model 1ST605R and I need to do a cartridge replacement and some repair work on the radio board (can't get FM to work). However, I can find ZERO on this model number. I even looked to the Sam's Technical Library and there is ZERO in the 1ST model range. Can anyone help me? I know it needs a new fantail cartridge, but I really need the number for this item as they are NOT cheap and there is no returns. Anyone have any help for me?