Electronic Keyboard User Manual
271
Troubleshooting
Troubleshooting
Appendices
No sound is heard
The [Master Volume] slider is set too 
low.
Turn the [Master Volume] knob toward 
“Max.”
p. 24
Headphones are connected.
When you connect the headphones, 
the sound is heard only through the 
headphones.
If you want sound to be output from the 
speakers, disconnect the headphones.
p. 25
The plug is still plugged into the 
headphone jack.
Disconnect the plug from the 
headphone jack.
p. 25
The volume is set too low on the Level 
[
▲
] [
▼
] buttons.
Press the Level [
▲
][
▼
] buttons to raise 
the volume.
p. 72
The volume is set too low on the 
Expression Pedal.
Advance the expression pedal.
p. 136
You do not have a Voice selected.
Voices that have their button indicator 
lit can be played.
Press a voice button to select a voice.
p. 47
No sound is heard
(by the Lower keyboard)
Drums/SFX are selected for the Lower 
keyboard, but you are playing a key to 
which no drum sound is assigned.
Turn the Drums/SFX off or play keys to 
which drums sounds are assigned.
p. 76
No sound is heard
(by the Upper keyboard)
“Percussion Set 3” has been selected 
for the Upper keyboard.
When “Percussion Set 3” is selected, 
some keys may have no sound 
assigned to them.
For the upper keyboard, select a voice 
other than “Percussion Set 3.”
p. 49
No sound is heard
(by the pedalboard)
Pedal cord is not connected correctly.
Use the pedal cable to connect the 
pedal correctly.
p. 20
No sound is heard (when external 
devices are connected)
The power of the connected external 
devices is not turned on.
Use the correct procedure to turn on 
the power of the connected external 
devices.
p. 241
–
p. 247
Damper Pedal does not operate
The damper pedal affects only the 
Lower keyboard and Upper keyboard. 
The damper pedal does not affect the 
Bass pedalboard.
You can change the settings so that the 
damper pedal affects the Upper 
keyboard.
p. 212
The damper pedal does not affect the 
Solo voice.
This is not a malfunction.
- - -
Expression Pedal does not 
operate
The function of the Expression Pedal 
during recording or the function during 
playback has been set to 
“COMPOSER.”
Set the expression pedal function 
during recording to “PEDAL,” and 
during playback to “PEDAL” or 
“PEDAL+COMPOSER.”
p. 211
Can’t use the function assigned to 
the foot switch
If “Regist Shift” (change Registrations) 
is “RIGHT,” “LEFT,” or “RIGHT + Load 
Next,” the foot switch will be 
dedicated to switching the 
Registration.
Turn “Regist Shift” off.
p. 135
When the human voice “Jazz Scat” 
is selected, playing dynamics do 
not change the sound
The setting of “Initial Touch” is turned 
OFF.
Turn “Initial Touch” on.
p. 210
Rotary effect is not be applied
Some sounds do not allow the rotary 
effect to be applied.
This is not a malfunction.
- - -
Chorus effect does not apply
Some sounds do not allow the chorus 
effect to be applied.
This is not a malfunction.
- - -
Problem Check Solution Page
AT-900_e.book 271 ページ 2007年9月7日 金曜日 午前8時43分










