DD-45/YDD-40 Owner’s Manual
7
Setting Up
Make all necessary settings below BEFORE turning the power on (page 9).
CAUTION
• Before connecting the instrument to other electronic components, turn off the power of all the components.
Also, before turning any components on or off, make sure to set all volume levels to minimum (0). Otherwise,
electrical shock or damage to the components may occur.
Power Requirements
Although the instrument will run either from an AC power adaptor or batteries, Yamaha recommends use of an
AC adaptor whenever possible. An AC adaptor is more environmentally friendly than batteries and does not
deplete resources.
Using an AC Power Adaptor
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Connect the AC adaptor to the power supply
jack.
WARNING
• Use the specified adaptor (page 31) only. The use of other
adaptors may result in irreparable damage to both the adap-
tor and the instrument.
w
Plug the AC adaptor into an AC outlet.
CAUTION
• Unplug the AC power adaptor when not using the instru-
ment, or during electrical storms.
• Even when the instrument is turned off, electricity is still
flowing to the instrument at the minimum level. When you
are not using the instrument for a long time, make sure you
unplug the AC power adaptor from the wall AC outlet.
NOTE
• Connecting the AC power adaptor automatically supplies power
from the adaptor and overrides battery power, even when batter-
ies are installed.
Using Batteries
q
Open the battery compartment cover located on
the instrument’s bottom panel.
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Insert six “AA” size, LR6 or equivalent batteries,
being careful to follow the polarity markings on
the side of the compartment.
e
Replace the compartment cover, making sure
that it locks firmly in place.
When battery power becomes too low for proper
operation, the volume may be reduced, the sound
may be distorted, and other problems may occur.
When this happens, make sure to replace all batter-
ies, following the precautions listed below.
CAUTION
• Use alkaline batteries for this instrument. Other types of
batteries (including rechargeable batteries) may have sud-
den drops of power when battery power becomes low.
• Make sure to install the batteries with the proper orienta-
tion, maintaining the correct polarity (as shown). Incorrect
battery installation may result in heat, fire and/or leaking of
corrosive chemicals.
• When the batteries run down, replace them with a complete
set of six new batteries. NEVER mix old and new batteries.
Do not use different kinds of batteries (e.g. alkaline and
manganese) at the same time.
• If the instrument is not to be in use for a long time, remove
the batteries from it, in order to prevent possible fluid leak-
age from the battery.
Adaptor
q
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AC outlet
q
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