Yamaha PSR-450 Owner's Manual - Page 83

Troubleshooting

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Troubleshooting Symptom Cause Solution A "pop" sound occurs when the [STANDBY/ON] switch is pressed to turn the instrument on. The initial surge of power in the instrument. This is normal and is not a cause for concern. • The volume has become lower. • The sound quality has become worse. • The rhythm stops. • Recorded song data is not played back properly. • The display disappears suddenly and the panel settings are reset. The batteries are drained. Replace the batteries with a complete set of 6 new batteries, or plug in the power adaptor. Noise is heard from the PSR-450. This can happen if a mobile telephone (or other wireless equipment) is being used or is ringing near the instrument. Turn mobile phones near the instrument off. Using a mobile phone near the PSR-450, including receiving calls, can produce unwanted noise. No sound from the PSR-450 speakers when the keyboard is played. A pair of headphones or a connecting cable may be plugged into the instrument's PHONES/OUTPUT jack. Unplug the headphones or connecting cable. The Dictionary function may be ON. Turn the Dictionary function OFF. The MIDI LOCAL mode may be set to Turn the MIDI LOCAL mode ON. OFF. • Some notes don't sound when a number of keys are played simultaneously. • Auto-accompaniment or song playback is interrupted. This can occur if the PSR-450's maximum polyphony (the maximum number of playback notes) is exceeded. The maximum polyphony of the PSR450 is 32 notes. Make sure that the maximum number of notes being played - including autoaccompaniment or song playback - is 32 or less. Rhythm accompaniment does not play A style number between 128 and 140 when the [START/STOP] button is (Pianist category) or number 121 pressed. (Guitar Serenade) is selected. This is not a malfunction. The Pianist and Guitar Serenade styles do not include rhythm parts. Auto-accompaniment will not start. The MIDI CLOCK may be set to EXTERNAL and the instrument is not receiving an external clock signal. Refer to the clock setting instructions on page 66, and set the clock to INTERNAL. Auto-accompaniment does not play properly. The style volume may be turned all the Refer to the instructions on page 23 way down. and set the style volume to an appropriate level. The keyboard split point is not set appropriately for the chords you are playing. Refer to the instructions on page 28 and set the split point at an appropriate key. Footswitch operation is reversed. The instrument's power was turned on Turn the power off, and then turn it on while the footswitch was pressed. again without pressing the footswitch. The timbre and volume of the sound produced varies according to the keys played. In order to reproduce realistic instrument sound and response, the PSR-450's AWM tone generator system employs "multi-sampling" in which different instrument samples are assigned to different key ranges. This can result in slight differences in the sound. This is not a malfunction. PSR-450 Owner's Manual 83

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83
PSR-450
Owner’s Manual
Troubleshooting
Symptom
Cause
Solution
A “pop” sound occurs when the
[STANDBY/ON] switch is pressed to
turn the instrument on.
The initial surge of power in the
instrument.
This is normal and is not a cause for
concern.
• The volume has become lower.
• The sound quality has become worse.
• The rhythm stops.
• Recorded song data is not played
back properly.
• The display disappears suddenly and
the panel settings are reset.
The batteries are drained.
Replace the batteries with a complete
set of 6 new batteries, or plug in the
power adaptor.
Noise is heard from the PSR-450.
This can happen if a mobile telephone
(or other wireless equipment) is being
used or is ringing near the instrument.
Turn mobile phones near the
instrument off. Using a mobile phone
near the PSR-450, including receiving
calls, can produce unwanted noise.
No sound from the PSR-450 speakers
when the keyboard is played.
A pair of headphones or a connecting
cable may be plugged into the
instrument’s PHONES/OUTPUT jack.
Unplug the headphones or connecting
cable.
The Dictionary function may be ON.
Turn the Dictionary function OFF.
The MIDI LOCAL mode may be set to
OFF.
Turn the MIDI LOCAL mode ON.
• Some notes don’t sound when a
number of keys are played
simultaneously.
• Auto-accompaniment or song
playback is interrupted.
This can occur if the PSR-450’s
maximum polyphony (the maximum
number of playback notes) is
exceeded.
The maximum polyphony of the PSR-
450 is 32 notes. Make sure that the
maximum number of notes being
played — including auto-
accompaniment or song playback — is
32 or less.
Rhythm accompaniment does not play
when the [START/STOP] button is
pressed.
A style number between 128 and 140
(Pianist category) or number 121
(Guitar Serenade) is selected.
This is not a malfunction. The Pianist
and Guitar Serenade styles do not
include rhythm parts.
Auto-accompaniment will not start.
The MIDI CLOCK may be set to
EXTERNAL and the instrument is not
receiving an external clock signal.
Refer to the clock setting instructions
on page 66, and set the clock to
INTERNAL.
Auto-accompaniment does not play
properly.
The style volume may be turned all the
way down.
Refer to the instructions on page 23
and set the style volume to an
appropriate level.
The keyboard split point is not set
appropriately for the chords you are
playing.
Refer to the instructions on page 28
and set the split point at an appropriate
key.
Footswitch operation is reversed.
The instrument’s power was turned on
while the footswitch was pressed.
Turn the power off, and then turn it on
again without pressing the footswitch.
The timbre and volume of the sound
produced varies according to the keys
played.
In order to reproduce realistic
instrument sound and response, the
PSR-450’s AWM tone generator
system employs “multi-sampling” in
which different instrument samples are
assigned to different key ranges. This
can result in slight differences in the
sound.
This is not a malfunction.