Clintxx

Hello, I have a DHC-MD373 Mini Hifi System (1999). I just bought a new MZ-N10 NetMD Walkman and connected it via the provided optical cable with the optical socket on the back of the DHC. However, the MZ-N10 shows on the display "No Signal". Have you heard anything before about this problem? Is it possible that the DHC model cannot communicate with the NetMD Walkman? Both models are from Europe. Thanks in advance, Clint