Donner DDP-300, Owner'S Manual

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No need to install extra drives. If the
piano isn’t recognized by computer,
please check if the USB cords are
connected securely or try to connect
other USB socket of the computer.
USB plug loose
Troubleshooting
There was no sound on the
keyboard.
1.Volume Controller Set at Minimum
Position.
2.Headphones or Plug Converters insert
headphone jack.
3.The power supply is not connected or
the piano is off.
1.Turn the volume to the right maximum
volume.
2.Remove the original connector form
the headphone jack.
3.Turn on the power supply and press
the boot button.
The pedals don't work.
1.Connecting line jack of pedal is not
plugged into piano.
2.Pedal plug loose.
1.Plug the pedal cord into the piano
jack.
2.Check to confirm whether the plug at
one end of the pedal connection is
loose or not, and then tighten it.
When the piano power is
turned on or off there is a
murmur.
Normal phenomenon
This is a normal phenomenon,
indicating that the current enters the
machine at this time.
The piano is noisy when
using a mobile phone.
Radio interference
The use of mobile phones in the vicinity
of the piano produces radiation. To
avoid this situation, you can turn off the
mobile phone or use it away from the
piano.
Abnormal tone or rhythm.
Power shortage
Power shortage.
Check power stability.
It seems that all tones are
pronounced or that the
pronunciation seems to be
cut off.
Normal phenomenon
The maximum number of simultaneous
sounds on this instrument is 128 notes. If
the dual tone mode is in use and the
accompaniment or music is playing, some
notes or sounds in the accompaniment or
music will be default.
Under the same timbre, the
quality of a note is different
from that of a note.
Normal phenomenon
This is a normal phenomenon. This machine
adopts AWM sound source mode. This kind
of sound source is sampled and recorded in
the whole keyboard area, so the quality of
the two notes is slightly different.
Issue Reason Solution
Connecting Computer,
Not recognized
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