Hi, i just received my new to me Icom IC-7200, and a MFJ993b IntelliTuner. It is my first external tuner (I use to have a borrowed TS-570d), and I build the interface cable as described in the page #9 of the instruction manual and I followed the instructions on page 33 for Icom Radio Interface. On the IC-7200 when I press the "tuner" button, it does not activate the MFJ tuner. Is something wrong? Thanks.