First try the Forum on www.fostexusa.com under "support".
Now where to start??? I will refer to pages in the User Manual with ()
Four Inputs, 16 Tracks. You allocate the Inputs A,B,C,D to four Tracks with the Rec Select buttons (p36) i.e. A - 1, B - 3, C - 7,D - 8 or A - 2, B - 4, C&D -...