Threshold FET Two - Manual or advice for MM/MC phono setup?

I recently acquired a Threshold FET Two (series I) without a manual.  I have questions about the MM vs MC phono setup.  On the back there is one set of phono RCA inputs, and one capacitance switch to select between 100pF & 300 pF. Is it necessary to open it up to set jumpers/switches for MM vs MC?  Or is it self-adjusting?

If curious, it will be fed by a also recently acquired Denon DP-790 (circa '75-79?) with stock arm.  Cartridge still TBD, but it has an old (entry level?) Grado GT at the moment. 

Any help or comments would be appreciated. 

Also, anyone have any idea where I can get or download an Owner's Manual (and/or Service Manual)?

Thanks in advance.