Troubleshooting - Yamaha Clavinova CVP-900 Owner's Manual

Troubleshooting

Problem
• The Clavinova does not turn on; there is no
power.
• A click or pop is heard when the power is
turned on or off.
• Noise is heard from the Clavinova's speakers.
• The display is too bright or too dark to read.
• The keyboard volume is low compared to that
of the Auto Accompaniment or song playback.
• The volume of the Auto Accompaniment or
song playback is low compared to that of the
keyboard.
• The overall volume is low, or no sound is
heard.
• The damper, sostenuto and soft functions do
not work for the relevant pedals.
• The damper pedal has no effect, or the sound
continuously sustains even when the damper
pedal is not pressed.
• Not all simultaneously-played notes sound.
• Accompaniment style or Song playback does
not start.
• Only the rhythm channel plays.
• The accompaniment style does not start,
even when Synchro Start is in standby
condition and a key is pressed.
• The desired chord is not recognized or output
by the auto accompaniment.
Possible Cause and Solution
Make sure that the Clavinova has been plugged in properly. Securely insert the
female plug into the AC socket on the Clavinova, and the male plug into a proper
AC outlet (page 17).
This is normal when electrical current is applied to the instrument.
Using a mobile phone in close proximity to the Clavinova may produce
interference. To prevent this, turn off the mobile phone, or use it further away from
the Clavinova.
The brightness of the display may be affected by the surrounding temperature;
try adjusting the contrast (page 149).
The overall keyboard volume or the independent volume level of the keyboard
part may be set too low. Raise the MAIN/LAYER/LEFT volume voices or lower
the STYLE/SONG volume in the BALANCE display (page 62).
The volume level of one or more accompaniment parts or song channels is set
too low. Raise the part or channel level(s) in the appropriate MIXER display
(page 121).
• The Master Volume is set too low; set it to an appropriate level with the
[MASTER VOLUME] dial.
• The volume of the individual parts may be set too low. Raise the volume of
MAIN, LAYER, LEFT, STYLE, and SONG in the BALANCE display (page 62).
• Make sure the desired channel is set to ON (page 62, 77).
• Headphones are connected, disabling the speaker output. (This happens
when the speaker setting is set to "HEADPHONE SW"; page 149.) Unplug the
headphones.
• Make sure the speaker setting is set to ON (page 149).
• Make sure the Local Control function is set to ON (page 145).
Each pedal has been assigned to a different function. Make sure that each pedal
is properly assigned to SUSTAIN, SOSTENUTO, and SOFT (page 139).
The pedal cable/plug may not be properly connected. Make sure to securely
insert the pedal plug into the proper jack (page 161 - 162).
You may be exceeding the maximum polyphony of the Clavinova. When this
happens, the earliest played notes will stop sounding, letting the latest played
notes sound. See page 166 for information on the maximum polyphony.
• MIDI Clock may be set to "EXTERNAL." Make sure this is set to "INTERNAL"
(page 146).
• Make sure to press the appropriate [START/STOP] button. To play an
accompaniment style, press the STYLE [START/STOP] button (page 62); to
playback a song, press the SONG [START/STOP] button (page 75).
• "New Song" (a blank song) has been selected. Make sure to select an
appropriate song in the SONG display (page 75).
• The song has been stopped at the end of the song data. Return to the
beginning of the song by pressing the [TOP] button (page 77).
Make sure the Auto Accompaniment function is turned on; press the [ACMP]
button.
You may be trying to start accompaniment by playing a key in the right hand
range of the keyboard. Make sure to play a key in the left-hand (accompaniment)
range of the keyboard.
• You may not be playing the correct keys to indicate the chord. Refer to "Chord
Types Recognized in the Fingered Mode" (page 64).
• You may be playing the keys according to a different fingering mode, and not
the one currently selected. Check the accompaniment mode, and play the
keys according to the selected mode (page 63).
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CVP-900