Adjusting a Japanese MDX-F5800 to US frequencies

Hello, I have a Japanese market Sony MDX-F5800 that I'd like to recalibrate to receive US radio frequencies. The MiniDisc wiki has a fantastic service manual for the unit, except they do not touch at all on the tuner. The service manual is for a US/UK unit and lists a TU-032 tuner. My model has a TU-030 tuner in it and has additional components, probably for the TV tuner capability it lists on the label. Does anyone have a service manual for the tuner itself, or should I just stick with having MD's but no radio?