VAIO Digital Studio™ System Reference Manual

Replacing the Lithium Battery

You may need to replace the lithium battery if your computer consistently

loses the date or time settings after turning it off. The lithium battery has

a typical life of three years, after which the battery may be too weak to

power the CMOS memory.

1 Reboot your computer by selecting Shut Down... from the Start

menu, and then selecting Restart.

2 If the error message “Error: Check date and time settings”appears

during the reboot sequence, press F2 during the reboot process to

access the BIOS Setup Utility. Otherwise it is not necessary to replace

the battery at this time, and you can skip all remaining steps.

3 Compare all the BIOS options to their default settings (see “CMOS

Setup Options” on page 85). Make a list of all the BIOS options that

are different from their default values. You will refer to this list when

you restore the BIOS settings later.

4 Select Exit Discarding Changes from the main menu using the right

arrow key.

5 Press Enter, type Y when prompted to discard changes, then press

Enter to exit the BIOS Setup Utility.

6 Turn off the computer and unplug the power cord.

7 Removethesidecover(see“Removing the Side Cover” on page 28).

! Before opening the system unit, save and close all open files, exit all open

applications, turn off the power to all attached peripheral devices, shut

down the computer, and unplug the power cord.

! When you remove the lithium battery, all values stored in the CMOS memory

(BIOS setup values and Plug and Play values) may be lost. Although the

computer can hold the charge for a short time while replacing the battery, it

is safer to assume that the settings will be lost. When the values are lost, the

BIOS values revert to their factory-default settings (see “Accessing the BIOS

Setup Utility” on page 22).

Do not handle damaged or leaking batteries.

The lithium battery may explode if mistreated. Do not disassemble it or

dispose of it in fire.

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