Vintage Nakamichi Oms-1a Cd Player

CD player has been tested and it is working.  However it is VERY sensitive to dirty or scratched disks, I don't know much about this model so not sure if that is normal or not.  However it will skip on disks that my other much newer players play without issue.  When playing a clean unscratched disk, it works perfectly and sounds great.  I also noticed the memory button doesn't seem to do anything, however not sure what it is supposed to do. There are a few scratches on the unit please look at pictures.