Yamaha PortaTone PSR-550 Owner'S Manual Download

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Troubleshooting

POSSIBLE CAUSE/SOLUTION

This is normal and is no cause for alarm.

Using a mobile phone in close proximity to the PortaTone may produce interference.
To prevent this, turn off the mobile phone or use it further away from the PortaTone.

The batteries probably need to be replaced. Either replace all six batteries, or use
an AC power adaptor.

• The R1/R2/L voice volume (Mixer) settings could be set too low. Make sure the

voice volumes are set at appropriate levels (page 76).

• The Local Control function could be turned off. Make sure Local Control is turned

on (page 116).

• Check whether the naming function of Registration Memory or song recording

(page 21) is called up in the display or not. If the naming function is active, the
PSR-550 does not produce any sound, even when the keys are played.

You are probably exceeding the maximum polyphony of the PSR-550. The PSR-550
can play up to 32 notes at the same time — including voice R2, voice L, auto
accompaniment, song, and multi pad notes. Notes exceeding this limit will not
sound.

Make sure that Disk mode is engaged.
In the Disk mode, no panel operations can be executed (except for disk operations),
and playing the keyboard does not produce any sound.
Exit from the display by pressing the [EXIT] button.

The MIDI Clock may be set to “Ext”. Make sure it is set to “Int” (page 116).

You may be trying to start accompaniment by playing a key in the right-hand range
of the keyboard. To start the accompaniment with Synchro Start, make sure to play
a key in the left-hand (accompaniment) range of the keyboard.

Check whether the Song mode (page 25) is selected or not. When the Song mode
is active, none of the auto accompaniment functions can be used.

Make sure that the scale tuning value for those notes is set to “0.” If not, select the
template “Equal” to recall the normal tuning of

0 cents (page 119).

Check whether the fingering mode is set to “Full” or not. If the Full fingering mode is
selected, chords are recognized over the entire range of the keyboard, irrespective
of the split point setting.

• Harmony cannot be turned on when the Full Keyboard fingering mode is selected

or if a percussion kit voice is selected. Select an appropriate fingering mode or
voice.

• Harmony cannot be turned on when a drum kit is selected for the voice R1.

The MIDI terminals can only be used when the HOST SELECT switch is set to
“MIDI.” All other settings (“Mac,” “PC-1,” and “PC-2”) are for direct transmission/
reception with a computer.

PROBLEM

• The speakers produce a “pop” sound whenever

the power is turned ON or OFF.

• When using a mobile phone, noise is produced.

• The volume is reduced or the sound is distorted.
• The sound quality has gotten progressively

worse.

• The registration memory doesn’t work properly.
• Recorded song data will not play back properly.
• The display goes blank and all panel controls are

reset.

• No sound results when the keyboard is played.

• Not all simultaneously-played notes sound.
• Auto Accompaniment seems to “skip” when the

keyboard is played.

• Nothing happens or nothing seems to function,

even when pressing a panel button. For example,
pressing the DEMO button does not start the
Demo song, or playing the keyboard does not
produce any sound.

• The accompaniment or song does not play back

even when pressing the [START/STOP] button.

• The Multi Pads do not play back, even when one

of the MULTI PAD buttons is pressed.

• The auto accompaniment does not start, even

when the Synchro Start is in the standby
condition and a key is pressed.

• The following buttons related to the auto

accompaniment do not function.
• [SYNC START] button
• [SYNC STOP] button
• [ACMP ON/OFF] button
• REGISTRATION MEMORY [FREEZE] button

• Certain notes sound at the wrong pitch.

• Auto accompaniment chords are recognized

regardless of the split point or where chords are
played on the keyboard.

• The Harmony function does not operate.