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Troubleshooting
If you think there’s a problem, read this first.
Symptom
Cause/Action Page
Power does not turn on
Is the AC adaptor connected correctly?
p. 18
Pedal does not work, or is “stuck”
Is the pedal connected correctly?
Plug the cable firmly into the pedal connector.
p. 18
If you disconnect the pedal cable from the DP-990 while the power is on, the
pedal effect may remain “stuck” in the On condition.
You must power-off the DP-990 before connecting or disconnecting the pedal
cable.
—
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. 69
Unable to read from/write to USB
memory
Are you using (optional) Roland USB memory?
Reliable performance cannot be guaranteed if you use non-Roland USB
memory products.
—
If you are unable to read or write USB memory successfully, change the
External Memory setting to “Mode 1.”
p. 78
“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.
—
Device connected to the Input
jacks have insufficient volume
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
Could the DP-990’s volume or the volume of the connected equipment be
turned down?
p. 20
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. 21
Has Local Control been set to “Off”?
When Local Control is set to Off, no sound is produced by playing back a
song. Set Local Control to On.
p. 75
No sound when you play back a
song
Has Local Control been set to “Off”?
When Local Control is set to Off, no sound is produced by playing back a
song. Set Local Control to On.
p. 75
Could the song volume be set to “0”? p. 47
No sound from the leftmost notes
of the keyboard
Is V-LINK switched on?
When V-LINK is on, the lowest twelve notes of the keyboard are used to control
the image, and will not produce sound.
p. 77
No sound (when a MIDI device is
connected)
Are all devices powered on?
—
Are the MIDI cables connected correctly? p. 84
Do the MIDI channels of the DP-990 and the connected device match? p. 76
Not all the notes you play are
sounded
The maximum simultaneous polyphony is 128 notes. If you are playing along
with a song and making heavy use of the damper pedal, the number of notes
the DP-990 is attempting to produce may exceed the maximum polyphony,
meaning that some of the notes will drop out.
—
DP-990_e.book 86 ページ ２００７年８月２２日 水曜日 午後４時３５分