Panasonic RC-X260 - Manual (Page 3)

When should the battery be replaced
Unplug the AC power cord from the AC
power outlet. After several seconds, plug it
back into the outlet, if the digits flash con­
tinuously, replace the battery with a new
one.
Replace the battery with a new one after
one year of use (most batteries have a
shelf life of approximatery one year).
If an extended power failure or interruption
occurs, replace the battery with a new one.
Operation
The sure time battery back-up is designed
to keep the clock operating in the event of
a power failure or interruption. (Such as
when moving this unit to a different room.)
Whenever a power interruption occurs, the
clock display will disappear. However even
though the display is completely blacked
out, the 9-volt back-up battery will take
over as the power source and the present
time and the alarm time will be preserved.
Even if the power is not resumed by the
wake-up time, the buzzer alarm will acti­
vate.
Notes
When the set is unplugged (not in use) for
a long time, remove the back-up battery to
prevent possible battery leakage.
Power failures may occur at any time of the
night or day and can be of a long or short
duration.
Most failures are so short that people don’t
even notice the interruption. These inter­
ruptions do, however, affect clocks which
do not incorporate a battery back-up.
If the power is not resumed by the wake-up
time, the radio alarm will not activate.
If the back-up battery goes dead during a
power interruption, the present time and
alarm time must also be reset after the
interruption.
The back-up battery wilt be exhausted
after about 17 hours of total (accumulative)
use. (The battery life will vary depending
on the frequency of the power interrup­
tion.)
After a power interruption, the time shown
in the display window may not be always
correct (it may gain or lose about six
minutes per hour).