5/9/14 - rsb

NO change to layout. No functional change.
Fixed typos regarding L and R audio. Board was built correctly, but text labels in schematic were wrong.
Added graphic to clarify connection at audio jack.
Added value of 33Ohms to PTC1 to match ECO from 2013 (value change). Schematic used to have nothing specified.

6/5/2015 - ccross