Radio Shack 43-3808 - Manual (Page 7)

7 Preparation
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Preparation
INSTALLING THE BACKUP BATTERY
If AC power fails or you unplug the system, one 9V alkaline bat-
tery (not supplied) is needed to save any recorded messages
and the settings for the day and time. For the best performance
and longest life, we recommend you use a RadioShack alkaline
battery.
Follow these steps to install the backup battery.
1. Use a Phillips screwdriver to remove the screw on the bat-
tery compartment cover, then remove the cover.
2. Attach a 9V alkaline battery to the terminals and place the
battery in the compartment.
3. Replace the cover and secure it with the screw.
Replace the battery when Lo appears on the display while the
system is connected to AC power.
CONNECTING AC POWER
Insert the supplied AC adapter’s barrel plug into the DC 9V jack
on the back of the system, then plug the adapter into a standard
AC outlet. The display lights and
Cr appears.
The system initializes in about 20 seconds, then sounds 4
tones.
00 and -- alternately appear.