Sony PCV-RS220 Online Help Center (User Guide) User Manual page 64

Overview
The upgrading procedures described in this section assume that you are familiar with the general terminology associated
with personal computers and with the safety practices and regulatory compliance required for using and modifying
electronic equipment.
Your computer may not be equipped with all of the hardware features mentioned in this section. The interior configuration
of your system may vary from the illustrations, depending the computer purchased. To view the specific hardware
configuration for your system, see the online specifications sheet.
Before upgrading your computer
Disconnect the computer from its power source and from telecommunications links, networks, or modems before you open
the unit or follow any procedures described in this section.
Failure to disconnect your computer from its power source may result in personal injury or equipment damage.
Electrostatic discharge (ESD) can damage disk drives, add-on cards, and other components. Work at an ESD workstation
when following the procedures described in this section. If an ESD station is not available, use these precautions:

Avoid working in a carpeted area

Do not handle materials that may produce or hold static electricity, such as cellophane wrappers.

Ground yourself by maintaining continuous contact with an unpainted metal portion of the chassis while performing
the procedure.

When removing a slot cover or other internal components, avoid rough handling that may damage the system board
or add-on cards.
You may need to temporarily remove add-on cards or other components that may be near the slot cover you plan to
remove.
Electrostatic discharge (ESD) can damage disk drives, add-on cards, and other components. Follow the
procedures described here only at an ESD workstation. If such a station is not available, do not work in a carpeted
area and do not handle materials that produce or hold static electricity (for example, cellophane wrappers). Ground
yourself by maintaining continuous contact with an unpainted metal portion of the chassis while performing the
procedure.
Always turn the power off before you open the system or connect your computer to peripheral equipment. Otherwise,
damage may occur to the integrated circuits in your computer.
Page 64