AT&T 7720 사용자 설명서
BASE UNIT BACK-UP BATTERIES
Replacing the Base Power Reserve Batteries
The base unit back-up batteries need to be replaced when the PWR RESERVE
BATT LOW light on the base flashes when the phone is on.
BATT LOW light on the base flashes when the phone is on.
1
Turn the base unit over. (Remove the wall bracket if the phone is
wall-mounted.)
wall-mounted.)
2
Open the battery compartment door.
3
Remove the old batteries.
4
Insert four new AA batteries as indicated by the diagram in the
compartment.
compartment.
5
Close the battery compartment door.
IMPORTANT: Do not install batteries during a power failure. Installing
batteries during a power failure will not enable the phone to work.
When battery power is low, the PWR RESERVE BATT LOW light goes on.
Replace the batteries promptly.
batteries during a power failure will not enable the phone to work.
When battery power is low, the PWR RESERVE BATT LOW light goes on.
Replace the batteries promptly.
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