Yamaha DD-12 Owner's Manual page 3

Taking Care of Your DD-12
Your DD-12 Digital Percussion unit will give you years of
playing pleasure if you follow the simple rules below.
1. Avoid placing the DD-12 in areas that are subject to
excessive heat or humidity. Do not leave the instrument
near heaters or in a car exposed to direct sunlight, for
example.
2. Avoid locations where the instrument is likely to be
exposed to excessive dust or moisture.
3. Make any connections between the DD-12 and other
devices with both pieces of equipment turned off. Lower
the volume on all devices to the minimum level when
turning the power on.
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4. Do not subject the instrument to strong physical shocks,
and avoid placing any heavy objects on top of it.
5. Use a soft cloth, dry or slightly damp, to clean the DD-12.
Never use chemicals such as benzine or thinner.
6. The DD-12 contains digital circuitry which may cause
interference if it is placed close to radio or television
receivers. If this occurs, move the instrument farther away
from the affected receiver.
lying Power to the DD-12
Your DD-12 Digital Percussion unit will operate on either
batteries or an optional power adaptor. Follow the
instructions below for the power source you intend to use.
Using batteries:
Open the battery compartment cover located on the bottom
of the DD-12 and insert six "C" size (SUM-2 or R-14)
batteries or equivalent (sold separately), being careful to
orient them as shown by the markings inside the
compartment. Then replace the battery compartment cover,
making sure that it locks firmly in place.
Cautions:
€ When the batteries run down, replace them with a
complete set of six new batteries. NEVER mix old and
new batteries.
You will know it is time to replace the batteries with fresh
ones when the following symptoms occur:
1. The DD-12's instrument sounds become distorted.
2. The display becomes dim.
3. The DD-12 resets its settings to their initia! values for
no apparent reason.
€ To prevent damage due to battery leakage, remove the
batteries from the instrument when it is not to be used for
an extended period of time.
Using an optional Power Adaptor:
Plug the DC output cable from an Yamaha PA-3, PA-4, or PA-
40 Power Adaptor into the DC IN jack on the DD-12 rear
panel, then plug the adaptor into a convenient AC power
outlet.
Use ONLY a Yamaha PA-3, PA-4, or PA-40 Power Adaptor to
power your DD-12 with AC mains power. Other AC adaptors
could cause serious damage to your Digital Percussion unit.