ThinkCentre
Hardw are Installation and Replacement
Guid e
Note
Before using this information and the product it supports, be sure to read and understand the Safety and Warranty Guide for
this product and “Notices,” on page 45.
LENOVO products, data, computer software, and services have been developed exclusively at private expense and
are sold to governmental entities as commercial items as defined by 48 C.F.R. 2.101 with limited and restricted
rights to use, reproduction and disclosure.
LIMITED AND RESTRICTED RIGHTS NOTICE: If products, data, computer software, or services are delivered
pursuant a General Services Administration ″GSA″ contract, use, reproduction, or disclosure is subject to restrictions
set forth in Contract No. GS-35F-05925.
vi ThinkCentreHardwareInstallationandReplacementGuide
Chapter 1. Important safety information
CAUTION:
Before using this manual, it is important that you read and understand all the
related safety information for this product. Refer to the Safety and Warranty Guide
that you received with this product for the latest safety information. Reading
and understanding the safety information reduces the risk of personal injury
and damage to your product.
This guide provides information about replacing Customer Replaceable Units
(CRUs).
This guide does not include procedures for all parts. It is expected that cables,
switches, and certain mechanical parts be replaced by trained service personnel
without the need for step-by-step procedures.
Note: Use only parts provided by Lenovo®.
This guide contains instructions for installing and or replacing the following parts:
v Battery
v Power supply
v Heat sink
v Hard disk drive
v Optical drive
v Diskette drive
v Memory modules
v PCI adapter
v System fan assembly
v Rear fan assembly
v Keyboard
v Mouse
Additional information resources
If you have Internet access, the most up-to-date information for your computer is
available from the World Wide Web.
Do not open the static-protective package containing the new part until the
defective part has been removed from the computer 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:
v Limit yourmovement.Movementcancausestaticelectricitytobuilduparound
you.
v Always handlepartsandothercomputercomponentscarefully.Handle
adapters, memory modules, system boards, and microprocessors by the edges.
Never touch any exposed circuitry.
v Prevent others from touching the parts and other computer components.
v Before you replace a new part, 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 in the package
and your body.
v When possible,removethenewpartfromthestatic-protectivepackaging,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 it.
v Do notplacethepartonthecomputercoverorothermetalsurface.
Figure 2 shows the location of connectors on the rear of your computer. Some
connectors on the rear of your computer are color-coded to help you determine
where to connect the cables on your computer.
USB connectors Used to attach a device that requires a Universal Serial Bus
(USB) connection, such as a USB keyboard, USB mouse, USB
scanner or USB printer. If you have more than eight USB
devices, you can purchase a USB hub, which you can use to
connect additional USB devices.
Ethernet connector Used to attach an Ethernet cable for a local area network
(LAN).
Note: To operate thecomputerwithinFCCClassBlimits,use
a Category 5 Ethernet cable.
Serial connector Used to attach an external modem, serial printer, or other
devices that use a 9-pin serial connector.
Audio line-in connector Used to receive audio signals from an external audio device,
such as a stereo system. When you attach an external audio
device, a cable is connected between the audio line-out
connector of the device and the audio line-in connector of the
computer.
Audio line-out connector Used to send audio signals from the computer to external
devices, such as powered stereo speakers (speakers with
built-in amplifiers), headphones, multimedia keyboards, or the
audio line-in connector on a stereo system or other external
recording device.
Chapter 2. Overview 7
Locating components
To open the computer cover, see “Opening the cover” on page 12.
Figure 3 shows the location of the various components in your computer.
Figure 3. Component locations
1 Hard disk drive 4 Diskette drive
2 Microprocessor and heat sink 5 Memory connectors (2)
3 Optical drive (such as a CD or