Lenovo ThinkCentre M79 Hardware Maintenance Manual Download Page 113

Page: 113 / 186

Chapter 11. Installing or replacing hardware

This chapter provides instructions on how to install or replace hardware for your computer.

Handling static-sensitive devices

Do not open the static-protective package containing the new part until the defective part has been removed
and you are ready to install the new part. Static electricity, although harmless to you, can seriously damage
computer components and parts.

When you handle parts and other computer components, take these precautions to avoid static-electricity
damage:

• Limit your movement. Movement can cause static electricity to build up around you.

• Always handle parts and other computer components carefully. Handle PCI cards, memory modules,

system boards, and microprocessors by the edges. Never touch any exposed circuitry.

• Prevent others from touching the parts and other computer components.

• Touch the static-protective package containing the part to a metal expansion-slot cover or other

unpainted metal surface on the computer for at least two seconds. This reduces static electricity from
the package and your body before you install or replace a new part.

• When possible, remove the new part from the static-protective package, and install it directly in the

computer without setting the part down. When this is not possible, place the static-protective package
that the part came in on a smooth, level surface and place the part on the package.

• Do not place the part on the computer cover or other metal surface.

Installing or replacing hardware

This section provides instructions on how to install or replace hardware for your computer. You can expand
the capabilities of your computer and maintain your computer by installing or replacing hardware.

Attention:

Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

Notes:

• Use only computer parts provided by Lenovo.

• When installing or replacing an option, use the appropriate instructions in this section along with the

instructions that come with the option.

Installing external options

You can connect external options to your computer, such as external speakers, a printer, or a scanner. For
some external options, you must install additional software in addition to making the physical connection.
When installing an external option, see “Locating connectors, controls, and indicators on the front of your
computer” on page 28 and “Locating connectors on the rear of your computer” on page 29 to identify the
required connector. Use the instructions shipped with the option to help you make the connection and install
any software or device drivers that are required for the option.

Removing the computer cover

Attention:

Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

105