4
POWER SUPPLY
POWER BACK UP DURING POWER INTERRUPTION
When to replace the battery
To check the battery condition, unplug the AC
power cord from the wall outlet and plug it in
again after a few minutes. If the displayed
time is incorrect, replace the battery with a
new one.
Caution
•
Be sure to install the battery before discon-
necting the AC power cord.
•
When the unit is left unplugged for a long
time, remove the battery to avoid undue
battery discharge and unit damage from
battery leakage.
Be sure to install an optional 9V battery for the
power back-up function. If the AC power
supply is interrupted, the battery supplies
power to keep the clock operating and holding
the alarm time setting.
•
During power interruption, the clock func-
tion is maintained although illumination of
the indicator goes off, but the alarm sound
does not come on.
•
After a power interruption, the displayed
time
may not be always correct (it may
gain or lose less than ten minutes per
hour).
This battery is only for clock operation and
alarm memory during power interruption.
You cannot listen to the radio with the
battery.
USING HOUSE CURRENT
Before use, check that the rated voltage of
your unit matches your local voltage.
Caution: To prevent electrical shock,
match wide blade of plug to wide slot,
fully insert.
To AC outlet
Insert one "6F22" battery
