Yamaha Harmony Director HD-200 Owner's Manual page 27

Troubleshooting
If you encounter any problems, first check the items listed below. If the solution provided below does not solve the
problem, or you are experiencing a problem other than those mentioned in the list, turn the power OFF, disconnect
the AC power adaptor and contact the dealer from whom you purchased the instrument to have the instrument
repaired.
Problem
A "pop" like noise occurs when
the power is turned ON.
A scratching noise or "pop"
occasionally occurs.
Noise occurs from the radio or
TV, etc.
The lamps for the panel buttons
are flashing.
The speaker produces no sound
even though the keyboard is
being played.
The volume of lower notes is
too low.
The sound is distorted.
Data in the memory has been
lost.
The LCD display is hard to read.
The sound is distorted when
playing chords.
Cause
Electrical current is flowing
through the main amplifier.
Such a noise may occur when
turning on/off the power of a
household appliance such as a
refrigerator or washing machine,
or when using an electric drill.
The radio or TV is positioned too
close to the instrument.
Battery power is low.
The volume settings for all notes
are set to the minimum level.
Headphones are connected to
the instrument.
This is due to the limitations of
the speaker.
Low frequency sounds are
produced using an external
speaker at a high volume.
The sound of the instrument is
resonant with the closet,
windowpane or other objects
close to the instrument.
A low-power rated speaker is
connected to the instrument.
The backup lithium battery's
power is low.
The display may be hard to read
depending on the angle.
Battery power is low.
Solution
This indicates that the device is operating and
is nothing to worry about. If you are using
external speakers, please turn down the
volume on the amplifier before switching the
power ON.
Use an AC outlet that is as far away as possible
from the device or machine that may be
causing the noise.
If you cannot find the source of the noise,
please contact the dealer from whom you
purchased the instrument.
Position the radio or TV as far away as possible
from the instrument.
Use the AC power adaptor or replace all six
batteries with a new set.
Set the volume to any level other than the
minimum level.
Disconnect the headphones from the
instrument.
Connect the instrument to a keyboard amplifier,
etc.
Reduce the volume.
Remove the objects that are resonating.
Connect a high-power rated speaker.
A speaker rated 100 W or more is
recommended when using this instrument for a
concert band.
Contact the dealer from whom you purchased
the instrument and have the battery replaced.
Adjust the CONTRAST dials on the rear panel.
Use the AC power adaptor or replace all six
batteries with a new set.
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