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PA-3B
DC IN
P
REPARING TO
U
SE THE
MDF3
Supplying Power
Using an Optional AC adaptor
If you use the MDF3 often, you will probably want to power
it with an AC power adaptor. The MDF3 can be powered by
the Yamaha PA-3B power adaptor, which is available for pur-
chase separately.
Before you connect the adaptor, check to make sure that the
POWER switch on the rear panel is turned off.
Plug the round end of the adaptor cord into the DC IN jack
on the back panel of the MDF3, then plug the adaptor itself
into an AC outlet.
Caution:
Be sure to use a power adaptor that is suited to the voltage
in your locale. Do not use an adaptor other than PA-3B. Any other
AC adaptor using different voltage can damage the MDF3.
Unplug the AC power adaptor when not using the instrument, or
during electrical storms.
Using Batteries
Under normal operating conditions, the MDF3 can be oper-
ated continuously for approximately three hours using a fresh
set of batteries.
Before you begin to insert the batteries, check to make sure
that the POWER switch on the rear panel is turned off. Then,
place six size “AA” alkaline batteries in the battery compart-
ment located on the underside of the unit.
Make sure that the batteries are oriented properly. The cor-
rect orientation is indicated by the markings on the inside of
the compartment.
Caution:
When the batteries run down, replace them with a com-
plete set of six new batteries. NEVER mix old and new batteries.
Do not use different types of batteries (e.g. alkaline and manganese)
at the same time.
Be sure to remove the batteries from the MDF3 when you will not
being using it for an extended period of time. If you leave batteries
in the unit during extended periods of disuse, you run the risk of
damage due to corrosion.
