2Precautions
Precautions !! PLEASE READ THIS BEFORE PROCEEDING !!
YAMAHA is not responsible for damage caused by improper handling or operation.
■Location
Do not expose the G50 to the following conditions to
avoid deformation, discoloration, or more serious damage.
• Direct sunlight (e.g. near a window).
• High temperatures (e.g. near a heat source, outside, or
in a car during the daytime).
• Excessive humidity.
• Excessive dust.
• Strong vibration.
■USE THE CORRECT POWER SUPPLY
Power to the G50 should be supplied only from the
appropriate Yamaha AC adaptor (the PA-3B or another
adaptor specifically recommended by Yamaha). Use of
another adaptor may cause serious damage to the unit.
Also make sure that the adaptor you have is appropriate
for the AC mains supply voltage in the area where you
intend to use the G50. (The correct input voltage is
marked on the adaptor.)
■Power Supply
• Turn the power switch OFF when the instrument is not
in use.
• The power adaptor should be unplugged from the AC
outlet if the G50 is not to be used for an extended
period of time.
• Unplug the G50 during electric storms.
• Avoid plugging the G50 into the same AC outlet as
appliances with high power consumption, such as
electric heaters or ovens. Also avoid using multi-plug
adaptors since these can result in reduced sound
quality and possibly damage.
■Turn Power OFF When Making Connections
• To avoid damage to the G50 and other devices to
which it is connected (a sound system, for example),
turn the power switches of all related devices OFF
prior to connecting or disconnecting audio and MIDI
cables.
■MIDI Connections
• When connecting the G50 to MIDI equipment, be sure
to use high-quality cables made especially for MIDI
data transmission.
• Avoid MIDI cables longer than about 15 meters.
Longer cables can pick up electrical noise that can
causes data errors.
■Handling and Transport
• Never apply excessive force to the controls, connec-
tors or other parts of the instrument.
• Always unplug cables by gripping the plug firmly, not
by pulling on the cable.
• Disconnect all cables before moving the instrument.
• Physical shocks caused by dropping, bumping, or
placing heavy objects on the instrument can result in
scratches and more serious damage.
■Cleaning
• Clean the cabinet and panel with a dry soft cloth.
• A slightly damp cloth may be used to remove stubborn
grime and dirt.
• Never use cleaners such as alcohol or thinner.
• Avoid placing vinyl objects on top of the instrument
(vinyl can stick to and discolor the surface).
■Electrical Interference
• This instrument contains digital circuitry and may
cause interference if placed too close to radio or
television receivers. If this occurs, move the instru-
ment further away from the affected equipment.
■Data Backup
• The G50 contains a special long-life battery that
retains the contents of its internal memory even when
the power is turned OFF. The backup battery should
last for several years. When the backup battery needs
to be replaced “BALo” will appear on the display
when the power is turned on. When this happens, have
the backup battery replaced by qualified Yamaha
service personnel. DO NOT ATTEMPT TO REPLACE
THE BACKUP BATTERY YOURSELF!
■Service and Modification
• The G50 contains no user serviceable parts. Opening it
or tampering with it in any way can lead to irreparable
damage and possibly electric shock. Refer all servicing
to qualified YAMAHA personnel.