Yamaha CVP-705B - Manual (Page 111)

CVP-709/CVP-705 Owner’s Manual
111
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Troubleshooting
Overall
A click or pop is heard when the power is
turned on or off. Electrical current is being applied to the instrument. This is normal.
The power is automatically turned off. This is normal and due to the Auto Power Off function. If necessary, set the
parameter of the Auto Power Off function (page 19).
Noise is heard from the instrument’s
speakers. Noise may be heard if a mobile phone is used near the instrument or if the
phone is ringing. Turn off the mobile phone, or use it further away from the
instrument.
In the LCD, there are some specific points
that are always lit or unlit. These are the result of defective pixels and occasionally occur in TFT-
LCDs; they do not indicate a problem in operation.
Noise is heard from the instrument’s
speakers or headphones when using the
instrument with the application on iPhone/
iPad. When you use the instrument along with the application on your iPhone/
iPad, we recommend that you set “Airplane Mode” to “ON” on your
iPhone/iPad in order to avoid noise caused by communication.
Mechanical noise is heard during
performance. The keyboard mechanism of this instrument simulates the keyboard
mechanism of an actual piano. Mechanical noise is also heard on a piano.
There is a slight difference in sound quality
among different notes played on the
keyboard. This is normal and is a result of the instrument’s sampling system.
Some Voices have a looping sound.
Some noise or vibrato is noticeable at higher
pitches, depending upon the Voice.
The overall volume is too low or no sound is
heard. The master volume may be set too low. Set it to an appropriate level with
the [MASTER VOLUME] dial.
All keyboard parts are set to off. On the Home display, touch [Main]/
[Layer]/[Left] to turn on the part (page 48).
The volume of the individual parts may be set too low. Raise the volume in
the Balance display (page 42).
Make sure the desired channel is set to on (page 93).
Headphones are connected, disabling the speaker output. Unplug the
headphones.
Make sure that the “Speaker” is set to “On” from [Menu]  [Utility] 
[Speaker/Connectivity].
The sound is distorted or noisy. The volume may be turned up too high. Make sure all relevant volume
settings are appropriate.
This may be caused by certain effects or filter resonance settings. Check
the effect or filter settings and change them accordingly in the Mixer
display, referring to the Reference Manual on the website (page 9).
Not all simultaneously played notes sound. You are probably exceeding the maximum polyphony (page 115) of the
instrument. When the maximum polyphony is exceeded, the earliest
played notes will stop sounding, letting the latest played notes sound.
The keyboard volume is lower than the Song/
Style playback volume. The volume of the keyboard parts may be set too low. Raise the keyboard
volume (Main/Layer/Left), or lower the Song/Style volume in the Balance
display (page 42).
Some characters of the file/folder name are
garbled. The language settings have been changed. Set the appropriate language
for the file/folder name (page 22).