Yamaha DX21 - Manual (Page 11)

CHAPTER III: THE FUNCTION MODE
The FUNCTION mode permits access to four groups of functions: tuning functions, MIDI functions, memory
management functions, and performance functions. In this chapter we’ll describe each of these functions; what
they do and how they are programmed.
The FUNCTION mode is accessed by pressing the FUNCTION button to the left
1. Accessing the
of the LCD display. Individual parameters to be programmed are then called by
FUNCTION Mode pressing the appropriate voice selector button. Note that when the FUNCTION
mode is active pressing a voice selector button calls the corresponding FUNCTION
parameter—these are the functions printed in brown below each voice selector.
Note that there are two exceptions: the PB (Pitch Bend) MODE SET and KEY SHIFT
KEY SET buttons are NOT included among the voice selectors. These function
selectors are located immediately above the DATA ENTRY -1 and +1 switches.
When the FUNCTION mode is called, the LCD should look something like this.
The top line of the display will. read “FUNCTION CONTROL”, indicating that the
FUNCTION mode is active, and the lower display line will show the name of the
selected function and its current data. In the example above, the MASTER TUNE
function is called (press the Al button) and the data is currently set at 0.
Once the desired function has been selected, its value can be altered using either
2. Entering Function
the linear DATA ENTRY control located to the left of the panel, or the adjacent
Data -1 /NO/OFF and +1 /YES/ON switches.
Moving the DATA ENTRY control away from you increases the value of the selected
parameter, and moving the control towards you decreases the data value. Pressing
the -1 switch decreases the value of the selected parameter by one (decrements),
and pressing the +1 switch increases the value by one (increments). While the
DATA ENTRY control is valuable for quickly approaching the desired value with
parameters that have a large data range, the +1 and -1 switches permit precise
step-wise location of a specific value. The switches are also easier to use with
parameters that only have two values–e.g. ON (1) or OFF (0). In some cases you
will be required to answer YES or NO to prompts which will appear on the LCD
display. The -1 /NO/OFF and +1 /YES/ON switches are used for this.
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