Sony PCV-RX742 - Manual (Page 77)

To Replace the Lithium Battery
The lithium battery starts to weaken after several years and the system settings, such as the date and time stored in
CMOS RAM, may become inaccurate. Replace the lithium battery when this occurs.
There is danger of the battery exploding if it is replaced incorrectly. Replace the battery only with a
CR2032-type lithium battery.
Replacing the lithium battery
1. Write down any changes you may have made to the settings in the BIOS Setup utility.
2. Shut down your computer and turn off all peripheral devices, such as your printer.
3. Unplug your computer and any peripheral devices.
4. Remove the side cover. See Removing the side cover .
5. If necessary, remove any cables, add-on cards, or other components to access the lithium battery.
6. Remove the old battery and install the new battery with the plus (+) side up.
Installing a lithium battery
7. Replace the side cover. See Replacing the side cover .
The values stored in the CMOS memory are now reset to the factory default values. Run the Setup utility to reset the date,
time, passwords, and other changes you may have made to the BIOS settings. If you do not wish to customize your BIOS
settings, do not run the Setup utility.
Dispose of the lithium battery properly. In some areas, the disposal of lithium batteries in household or
business trash may be prohibited. You can return your unwanted lithium batteries to your nearest Sony Service Center
or Factory Service Center. To locate a Service Center near you, call 1-888-4-SONY-PC (1-888-476-6972).
To reset your computer's date and time, see the VAIO Help and Support Center for instructions.
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