39
Playing the Internal Sound Generator
USB mode and MIDI mode
The SC-D70 has two modes: USB mode and MIDI mode.
Normally, the SC-D70 will start up in USB mode when you turn on the power. If 
you wish to start up the SC-D70 in MIDI mode, push and hold in the INST LEVEL/
PREVIEW switch, and turn on the power.
fig.15-02.e
Depending on the mode, the flow of MIDI data will be as shown in the following 
diagram.
In USB mode
MIDI data that is input from MIDI IN will not be passed to the sound generator, but 
will be sent through the USB connector to the computer.
fig.15-03.e
Sound Generator Level Knob / Preview Switch
THRU function : ON
MIDI IN
USB
MIDI OUT
SC-D70
Part group A
GM/GS 
Sound generator
Part A1 - A16
Part group B
GM/GS 
Sound generator
Part B1 - B16
The number of sound 
generator parts that can be 
controlled via the USB 
connector will depend on 
the software that you use. 
This means that even 
though you use the USB 
connector, you may not 
necessarily be able to play 
32 parts. Carefully read the 
owner’s manual for your 
software.