Komatsu WA480-8 Operation & Maintenance Manual page 115

OPERATION EXPLANATION OF COMPONENTS
RETURN SWITCH
Pressing RETURN switch cancels a selection or changes, and
returns the screen to the previous screen or the standard
screen.
UP SWITCH
Pressing UP switch moves the cursor up by one item. When on
the first line, it moves to the last line.
On the value input screen, the value is increased by one.
DOWN SWITCH
Pressing the DOWN switch moves the cursor down by one
item. When on the last line, it moves to the first line.
On the value input screen, the value is decreased by one.
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