Sony PCV-LX810 - Manuel (Page 44)

VAIO Slimtop™ System Reference Manual 30
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 the computer.
2
If the error message “Error: Check date and time settings” appears during the
reboot sequence, press F3, then press F2 during the reboot process to access
the BIOS Setup Utility. If the error message does not appear, you do not need
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 65 to locate the BIOS default settings. 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
Press ESC, then select Exit from the main menu using the right arrow key.
Exit Discarding Changes, the first item in the list, is automatically selected.
5
Press Enter, type N when prompted to save, then press Enter to exit the BIOS
Setup Utility.
6
Turn off the computer, and unplug the power cord.
7
Remove the system cover (see “Removing the System Cover” on page 24 ).
8
Remove the power supply (see 1 in diagram and “Removing the Power
Supply” on page 33).
!
Sony recommends that you use an authorized service dealer to replace the
lithium battery. However, if you wish to replace the battery yourself, read
the following cautions and procedure.
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
CMOS Setup Utility” on page 16).
Do not handle damaged or leaking batteries.
The lithium battery may explode if mistreated. Do not disassemble it or
dispose of it in fire.