I do have the manual in pdf , but the memory battery is not mentioned , or I have found yet . This is one of my " fix it one of these days " projects . It's been a yr. + since I looked this unit , as I remember , it would turn on and act normal , then after a few moments it would freeze-up & be unresponsive . Some one in a thread somewhat in the last couple weeks mentioned a similar issue . So now I'm on the lookout for the location of the memory battery ?