Troubleshooting - Yamaha P-250 Owner's Manual

Troubleshooting

Problem
The P-250 does not turn on.
A click or pop is heard when the
power is turned on or off.
Noise is heard from the P-250
speakers.
The overall volume is too low, or
there is no sound at all.
The keyboard volume is lower
than the song playback volume.
The speakers do not turn off
when a pair of headphones is
connected.
The buttons do not respond.
The sound sustains and does
not decay when I press the
pedal to which [Sostenuto] is
assigned.
Higher or lower notes do not
sound correctly when the trans-
pose or octave setting is made.
The tempo does not change
even though I recorded with
tempo changes.
86
P-250
Possible causes
The P-250 has not been plugged in prop-
erly.
Electrical current is being applied to the
instrument.
A mobile phone is being used near the P-
250 (or the ring tone is sounding).
The [MASTER VOLUME] is set too low
(page 16).
Headphones are connected (applicable
only if the Speaker setting is [Normal
HeadphoneSW]). (page 79)
Speaker setting is off.
The "Local Control" function is set to off.
(page 74)
The "InternalTG" is set to off (page 70).
"Expression" is assigned to one of the
connected pedals or the modulation
wheel.
The Master EQ gain level is low
(page 38).
The Part EQ gain level is low (page 68).
The volume level for the keyboard perfor-
mance is set too low.
The speaker setting is on.
While you are using a function, some but-
tons not used for the function are dis-
abled.
With the voices in the ORGAN1,
ORGAN2, STRINGS, CHOIR, or
SYNTH.PAD group, or part of the XG
group, the sound continues sustaining
while you hold down the sostenuto pedal.
The setting range for the transposition
and octave setting is C-2 - G8. (With the
normal setting, the unit's 88 keys cover
the range of A-1 - C7.) If the lowest key is
set to a note lower than C-2, it will pro-
duce a sound one octave higher. If the
highest key is set to a note higher than
G8, it will produce a sound one octave
lower.
Depending on the timing of the tempo
changes, the changed tempo may not be
recorded. In this case, the recording will
be played back at the original tempo.
Make tempo changes when the recording
track is selected and the red track indica-
tor is flashing. The same trick applies to
editing the tempo after recording.
Solution
Securely insert the female plug into the socket on
the P-250, and the male plug into a proper AC out-
let. (page 16)
This is normal.
Turn off the mobile phone, or use it further away
from the P-250. Using a mobile phone in close
proximity to the P-250 may produce interference.
Raise the [MASTER VOLUME] level.
Disconnect the headphone plug.
Set "Speaker" to "Normal" or "ON". (page 79)
Turn the "Local Control" function on.
Set the "InternalTG" to on.
Assign any function other than "Expression" to the
pedal.
Raise the Master EQ gain level.
Raise the Part EQ gain level.
Move the [SONG BALANCE] slider toward "KEY-
BOARD" to increase the keyboard volume.
Set "Speaker" to "Normal". (page 79)
If a song is recording or playing, stop recording or
playback. Otherwise, press the [EXIT] button to
return to the main screen. Then, perform the
desired operation.
This is normal.
This is normal.
This is normal.
Check the location at which the tempo was
changed.