Yamaha Portatone PSR-18, Authorized Product Manual

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Using a Digital Effect
When the PSR-18 POWER switch is initially turned on, the REVERB effect is
automatically selected. You can select either the REVERB or ECHO effect by press-
ing the appropriate button. The EFFECT VOLUME control adjusts the “depth”
or “strength” of the effect. Move the EFFECT VOLUME control towards the
“MAX” setting for a deeper effect. The effect can be turned off by sliding the
EFFECT VOLUME control all the way to the “OFF” position.
Playing a Rhythm Pattern
The PSR-18 has 22 different rhythm patterns that can be selected and played
by pressing the appropriate white key on the keyboard while holding the
button.
To play the SWING rhythm, for example, hold the button and press
the white key on the keyboard labelled “SWING” above the keyboard. The
SWING rhythm will begin playing immediately.
The rhythm pattern can be stopped at any time by pressing the button.
* A different rhythm pattern can be selected in the same way even while a rhythm
pattern is playing. In this case the new rhythm pattern begins playing from the
beginning of the next measure.
Adjusting the Tempo (speed)
of the Rhythm Pattern
The tempo of the selected rhythm pattern can be adjusted in 16 steps.
40 50 60 73 80 92 100 112 120 132 146 159 184 200 225 240 (beats per minute)
A tempo of 120 beats per minute is automatically selected when the POWER/
MODE switch is initially turned ON.
Press the TEMPO button to increase the tempo or the TEMPO
button to decrease the tempo. The tempo is increased or decreased by one step
each time the corresponding button is pressed. Press both the buttons
together to restore the normal “120” tempo setting.