Hi, This series of cameras,CD200-CD250-CD300-CD350-CD400-CD500,can suffer the same illness.Also thier parents,the FD series. The lens tracks back and forth and can't "jive" with the disk,looking, looking,looking.Most often an adjustment and "tweaking" is needed. This can be very time consuming. There are other reasons as well,like broken parts. I have one of these units in house now. Stay in touch,I'll share what I know/find out. Jim