Yamaha disklavier Mark III Series Maintenance Handbook page 7

Control Unit — Rear Panel
1 TO HOST (serial port)
Used to connect the Disklavier with a personal com-
puter.
2 HOST SELECT
Used to select the host computer connected to the TO
HOST connector.
3 TO CONTROL CABLE FOR PIANO
Used to connect the control cable from the piano.
HOST SELECT TO CONTROL CABLE
TO HOST
FOR PIANO
PC1
PC2
MIDI
MAC
1 2
4 MIDI OUT
Used to connect external MIDI equipment for outputting
MIDI data.
5 MIDI IN
Used to connect external MIDI equipment for inputting
MIDI data.
This chapter describes the functions of the buttons and
other parts of the Disklavier.
5
OUT MIDI IN
3 5
4