Yamaha PSR-450 Manual Do Utilizador

PSR-450  Owner’s Manual

Troubleshooting

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.