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DDK-7 Owner’s Manual
• Do not place the instrument against a wall (allow at least 3 cm/one-inch from
the wall), since this can cause inadequate air circulation, and possibly result in
the instrument overheating.
• Before connecting the instrument to other electronic components, turn off the
power for all components. Before turning the power on or off for all
components, set all volume levels to minimum. Also, be sure to set the volumes
of all components at their minimum levels and gradually raise the volume
controls while playing the instrument to set the desired listening level.
• When cleaning the instrument, use a soft, dry cloth. Do not use paint thinners,
solvents, cleaning fluids, or chemical-impregnated wiping cloths.
• Do not insert a finger or hand in any gaps on the instrument.
• Never insert or drop paper, metallic, or other objects into the gaps on the panel
or keyboard. If this happens, turn off the power immediately and unplug the
power cord from the AC outlet. Then have the instrument inspected by qualified
Yamaha service personnel.
• Do not place vinyl, plastic or rubber objects on the instrument, since this might
discolor the panel or keyboard.
• Do not rest your weight on, or place heavy objects on the instrument, and do not
use excessive force on the buttons, switches or connectors.
• Do not use the instrument/device or headphones for a long period of time at a
high or uncomfortable volume level, since this can cause permanent hearing
loss. If you experience any hearing loss or ringing in the ears, consult a
physician.
Saving and backing up your data
• Always save data to a USB flash memory or other external media, in order to
help prevent the loss of important data due to a malfunction or user operating
error.
Backing up the external media
•To protect against data loss through media damage, we recommend that you
save your important data onto two external media.
Yamaha cannot be held responsible for damage caused by improper use or
modifications to the instrument, or data that is lost or destroyed.
Always turn the power off when the instrument is not in use.
Connections
Maintenance
Handling caution
Saving data
The serial number of this product may be found on the bottom
of the unit. You should note this serial number in the space
provided below and retain this manual as a permanent record
of your purchase to aid identification in the event of theft.
Model No. DDK-7
Serial No.
(bottom)