Yamaha RCX240 User Manual page 317

Select the parameter with the cursor (
2
"Serial IO" setting (3)
Press (EDIT).
3
"Serial IO" setting (4)
Press (INVALID) or
4
To select "4. IO size", press
Press to quit the edit mode.
5
/
(VALID) to enter the setting.
(Large) or (Small).
Chapter 4 OPERATION
12. "SYSTEM" mode
) keys.
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