Troubleshooting - Yamaha PSR-SX900 Owner's Manual

Overall
A click or pop is heard when the power is
turned on or off.
The power is automatically turned off.
Noise is heard from the instrument.
Noise is heard from the instrument's speak-
ers or headphones when using the instru-
ment with an iPhone/iPad app.
In the LCD, there are some specific points
that are always lit or unlit.
There is a slight difference in sound quality
among different notes played on the key-
board.
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 sound is distorted or noisy.
Sound from the speaker is occasionally inter-
rupted.
Not all simultaneously played notes sound.
The keyboard volume is lower than the Style/
Song playback volume.
The Main display does not appear even
when turning the power on.
Some characters of the file/folder name are
garbled.
An existing file is not shown.

Troubleshooting

This is normal. Electrical current is being applied to the instrument.
This is normal and due to the Auto Power Off function. If necessary, set the parameter of
the Auto Power Off function (page 21).
Noise may be heard if a mobile phone is used near the instrument or if the phone is ring-
ing. Turn off the mobile phone, or use it further away from the instrument.
When you use the instrument along with an iPhone/iPad app, we recommend that you set
"Airplane Mode" to "ON" on your iPhone/iPad in order to avoid noise caused by communi-
cation.
These are the result of defective pixels and occasionally occur in TFT-LCDs; they do not
indicate a problem in operation.
This is normal and is a result of the instrument's sampling system.
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. Use the PART ON/OFF [RIGHT 1]/[RIGHT 2]/[RIGHT 3]/
[LEFT] button to turn it on (page 44).
The volume of individual parts may be set too low. Raise the volume in the Mixer display
(page 80).
Make sure the desired channel is set to on in the Mixer display (page 82).
Headphones are connected, disabling the speaker output. Unplug the headphones.
Connect the footswitch to the appropriate jack.
Make sure that the Speaker setting is set to "On" or "Headphone switch": [MENU]  [Util-
ity]
The volume may be turned up too high. Make sure all relevant volume settings are appro-
priate.
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 Man-
ual on the website.
The sound level is too high, so the speaker protection function is activated and the sound
stops. Set the sound to an appropriate level by turning down the [MASTER VOLUME] dial.
You are probably exceeding the maximum polyphony of the instrument. When the maxi-
mum polyphony is exceeded, the least important notes (such as soft notes and notes cur-
rently decaying) will stop sounding first.
The volume of the keyboard parts may be set too low. Raise the volume in the Mixer dis-
play (page 80).
This may occur if a USB flash drive has been installed to the instrument. Installation of
some USB flash drive may result a long interval between turning the power on and
appearance of the Home display. To avoid this, turn the power on after disconnecting the
device.
The language settings have been changed. Set the appropriate language for the file/ folder
names (page 21).
The file extension (.MID, etc.) may have been changed or deleted. Manually rename the
file, adding the appropriate extension, on a computer.
Data files with names of more than 50 characters cannot be handled by the instrument.
Rename the file, reducing the number of characters to 50 or less.
PSR-SX900/SX700 Owner's Manual
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