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6
Maintenance
How to Test the Battery
Your system may include a
backup battery. If it does, the
system will continue to function
during a power failure, because
it will draw power from the bat-
tery.
You can test the charge in your
system's battery by following
the procedure to the right.
If your backup battery's charge
is low, a service message ap-
pears in your display. To inves-
tigate the service message, fol-
low the instructions in "Trouble-
shooting Service Conditions,"
later in this section.
To replace your system's bat-
tery, call your service represen-
tative.
To Test the Battery:
1. Press and hold the
[walk test] key for 2 seconds
until you hear two beeps.
When prompted, enter your
user code.
2. Press the
key four
times. You see:
BATTERY TEST?
Byp=NO Home=YES
3. Press the key. The
battery test begins. To clear
the display, press the
key. The test takes approxi-
mately 2 minutes, during
which time you see:
BATTERY TEST
IN PROGRESS
If the battery's charge is low,
you see the following once
the test has concluded:
PRESS SERVICE