The Shuffle and Repeat buttons are unique in that they have 4 states. They are as follows:

     Top to bottom: 

     off 
     off - pressed 
     on
     on - pressed

Also the broken gray and black lines are shared lines.

The EQ and PL buttons are the same.They are as follows:

     Top row is off, bottom row is on.
     Left half is unpressed,Right half is pressed.