Korg TM-70T Owner's Manual page 6

The left tuning guide LED lights up if the pitch of
your instrument is flat, and the right tuning guide
LED lights up the pitch is sharp.
Tuning to a just major third above
If you want to tune to a just
major third (C ♯ ) above A (0
cents), tune your instrument
so that the meter lines up with
the on the left side.
Tuning to a just minor third above
If you want to tune to a just
minor third (C) above A (0
cents), tune your instrument
so that the meter lines up with
the on the right side.
Tuning to a reference tone (Sound Out)
Use the Sound Out feature on this device to tune while
hearing the sound that's output.
1.
Press the
A reference tone is output from the headphones or
speaker.
2.
Press the ,
select the name of the target note to which you want
to tune.
Each time you press the button, the output reference
tone changes as follows.
B ♭ (B ♭ 4) n B n C (C5) n C ♯ n D n E ♭ n E n F n
F ♯ n G n G ♯ n A n B ♭ n B n C (C6) n C (C3) ...
This setting is stored even when the power is off.
3.
Tune your instrument according to the reference tone.
When using a contact mic or connecting a pair of
headphones, you can tune while looking at the meter.
4.
To turn the reference tone off, press the
button.
The pitch is at
2
1, 4
button while the tuner is on.
buttons on the
In tune The pitch is sharp
4
button to