Panasonic RX-DT650 - Manual (Page 4)

Power Sources
To operate AC power
Connect the included AC power cord to the AC socket of this unit and
your household AC outlet.
To operate on battery power
When using the memory back-up batteries (see the next page), insert
them first.
Please read “Use of batteries" on page 7.
Battery installation
Unplug the AC power cord from the household AC outlet and the
AC socket of the unit.
Insert ten R20/LR20 (UM-1 or equivalent, not included) batteries
into the battery compartment, making sure that the batteries are
installed in the designated numerical order and that the proper
polarities are maintained.
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• Batteries installed with incorrect polarities may leak and damage
this unit.
• Do not mix batteries (old and new) or types (manganese and
alkaline, etc.).
• If the unit is not used for a long period of time or is used only from
an AC power source, remove the batteries to prevent potential
damage from possible battery leakage.
Battery life
When to replace the batteries:
When the POWER/BATT STDBY <!) indicator goes off (or dims)
during play, replace all the batteries with new ones. If you continue
using the batteries, it will automatically turn itself off.