Owner's Manual (DP-900_OM.pdf) - Roland
Owner's Manual (DP-900_OM.pdf) - Roland
Owner's Manual (DP-900_OM.pdf) - Roland
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Troubleshooting<br />
Case<br />
In the upper<br />
range, the sound<br />
changes abruptly<br />
beyond a certain<br />
key<br />
A High-pitched<br />
whine is produced<br />
Cause/Remedy<br />
On an acoustic piano, notes in the upper<br />
one and a half octaves of the keyboard<br />
continue to sound until they<br />
decay naturally, regardless of the<br />
damper pedal. There is a difference in<br />
the timbre as well. <strong>Roland</strong> pianos<br />
faithfully simulate such characteristics<br />
of the acoustic piano. On the <strong>DP</strong>-<strong>900</strong>,<br />
the range that is unaffected by the<br />
damper pedal will change depending<br />
on the Key Transpose setting.<br />
When listening through headphones:<br />
Some of the more flamboyant and<br />
effervescent piano tones feature an<br />
ample high-end component,<br />
which may make the sound appear<br />
to have metallic reverberation<br />
added. Since this<br />
reverberation becomes particularly<br />
audible when supplemented by<br />
heavy reverb, you may be able to<br />
diminish the problem by reducing<br />
the amount of reverb applied to<br />
the sound.<br />
If you can’t hear the problem in the<br />
headphones:<br />
Here, a different cause (such as<br />
resonance produced by the <strong>DP</strong>-<br />
<strong>900</strong>) would be suspect. Consult<br />
your <strong>Roland</strong> dealer or nearest <strong>Roland</strong><br />
Service Center.<br />
Case<br />
The bass range<br />
sounds odd, or<br />
there is a vibrating<br />
resonance<br />
The volume level<br />
of the instrument<br />
connected to Input<br />
jacks is too<br />
low<br />
926b<br />
Cause/Remedy<br />
If you can’t hear the problem in the<br />
headphones:<br />
Playing at loud volumes may<br />
cause instruments near the <strong>DP</strong>-<strong>900</strong><br />
to resonate.<br />
Resonation can also occur with<br />
fluorescent light tubes, glass<br />
doors, and other objects. In particular,<br />
this problem occurs more<br />
easily when the bass component is<br />
increased, and when the sound is<br />
played at higher volumes. Use the<br />
following measures to suppress<br />
such resonance.<br />
• Place speakers so they are 10–15<br />
cm from walls and other surfaces.<br />
• Reduce the volume.<br />
• Move the speakers away from any<br />
resonating objects.<br />
When listening through headphones:<br />
Here, a different cause (such as<br />
resonance produced by the <strong>DP</strong>-<br />
<strong>900</strong>) would be suspect. Consult<br />
your <strong>Roland</strong> dealer or nearest <strong>Roland</strong><br />
Service Center.<br />
Could you be using a connection cable<br />
that contains a resistor?<br />
Use a connection cable that does not<br />
contain a resistor.<br />
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