Filter
Top Products
Symptom Cause/Action Page
Even though you’re using head-
phones and the sound is muted,
a thumping sound is heard when
you play the keyboard
LX-15 uses a hammer action keyboard in order to simulate an acoustic piano’s playing touch as realistically as possible. For this
reason, you’ll hear the hammers thump when you play the keyboard, just as you would when playing an acoustic piano. Since
this unit allows you to adjust its volume, you might notice the sound of the hammers in certain situations, but this does not
indicate a malfunction. If vibration transmitted to the oor or walls is a concern, you may be able to minimize the vibration
by moving the piano away from the wall, or by laying down a commercially available anti-vibration mat designed for use with
pianos.
–
Power turns o on its own
When 30 minutes have elapsed since you last played or operated this unit, the power will turn o automatically. (This is the
factory setting).
If you don’t need the power to turn o automatically, turn the “Auto O” setting “O.”
p. 40
Power does not turn on
Is the power cord connected correctly? p. 58
Could you have turned the power on again immediately after turning the power o?
Allow an interval of at least ve seconds before turning the power on again.
–
Screen display is irregular when
power is turned on/o
Since the LX-15 uses a liquid-crystal display, you may nd that it is unable to display letters or other things in environments
where temperatures go below 0 degrees Celsius (32 degrees Fahrenheit).
–
Pedal does not work, or is “stuck”
Is the pedal connected correctly?
Plug the cable rmly into the pedal connector.
p. 59
If you disconnect the pedal cord from the LX-15 while the power is on, the pedal eect may remain “stuck” in the On condition.
You must power-o the LX-15 before connecting or disconnecting the pedal cord.
p. 59
Could you have changed how the pedal eect is applied?
If the damper pedal part is set to Right, the pedal will apply only to the right tone; if it is set to Left, the pedal will apply only to
the left tone.
p. 45
Could Twin Piano be turned on?
If Twin Piano is on, the right pedal will aect only the right-hand keyboard zone and the left pedal will aect only the left-hand
keyboard zone.
p. 20
Could you have changed the function of the pedal?
If you’ve switched the function of the soft pedal or sostenuto pedal, these pedals will not operate as the soft pedal or sostenuto
pedal.
p. 46
Unable to read from/write to USB
ash drive
Are you using (optional) Roland USB ash drive?
Reliable performance cannot be guaranteed if you use non-Roland USB ash drive products.
–
If you are unable to read or write USB ash drive successfully, change the USB memory mode. p. 48
“Buzz” is heard from external
devices
Are the external devices connected to more than one AC power outlet?
If you connect external devices, be sure to connect them to the same AC outlet.
–
The volume level of the instru-
ment connected to Input jacks is
too low.
Could the Input volume be set to “0”? p. 44
Could you be using a connection cable that contains a resistor?
Use a connection cable that does not contain a resistor.
–
No sound
No sound
Is the speaker cable connected correctly? p. 59
Could the LX-15’s volume or the volume of the connected equipment be turned down? p. 13
Could headphones be connected?
Could there be a plug inserted in a headphone jack?
The speakers will not produce sound if headphones or plug are connected to the headphone jacks.
p. 11
Has Local Control been set to “O”?
When Local Control is set to O, no sound is produced by playing the keyboard. Set Local Control to On.
p. 46
Could Twin Piano mode be set to “Individual”?
If headphones are connected when Twin Piano is “On” and the mode is set to “Individual,” notes played in the left-hand keyboard
zone will not be heard from the headphones connected to the right Phones jack. Similarly, notes played in the right-hand
keyboard zone will not be heard from the headphones connected to the left Phones jack.
p. 20
No sound when you play back
a song
Has Local Control been set to “O”?
When Local Control is set to O, no sound is produced by playing the song. Set Local Control to On.
p. 46
Could the song volume be set to “0”? p. 25
No sound from the leftmost notes
of the keyboard
Could the Visual Control mode be set to MVC or V-LINK?
If the Visual Control mode is set to MVC or V-LINK, the lowest 12 keys of the keyboard (A0–G#1) are used to control images; they
will not produce sound.
p. 48
No sound (when a MIDI device is
connected)
Are all devices powered on? –
Are the MIDI cables connected correctly? p. 11
Do the MIDI channels of the LX-15 and the connected device match? p. 46
Notes don’t sound right
Sound is not loud enough
Only the high sounds are heard
Is the speaker cable connected correctly? p. 58
Pitch of the keyboard or song is
incorrect
Could you have made Transpose settings?
p. 21
p. 35
Is the Master Tune setting appropriate? p. 39
Is the setting for the Temperament correct? p. 39
Is the settings for the Stretch Tuning correct? p. 39
Not all the notes you play are
sounded
The maximum simultaneous polyphony is 128 voices. If you are playing along with a song and making heavy use of the damper
pedal, the number of notes the LX-15 is attempting to produce may exceed the maximum polyphony, meaning that some of the
notes will drop out.
–
Sounds are heard twice (doubled)
when the keyboard is played
Is the LX-15 in Dual play? p. 15
When the LX-15 is connected to an external sequencer, set the Local Control to o. Alternatively, the sequencer could be set so
its Soft Thru feature is O.
p. 46
Troubleshooting
50