IBM ThinkCentre 8171 Parts list manual

ThinkCentre
™
Hardware Removal and Replacement
Guide
Ty pe s 8424, 8425, 8428
Ty pe s 8171, 8172, 8173


ThinkCentre
™
Hardware Removal and Replacement
Guide
Ty pe s 8424, 8425, 8428
Ty pe s 8171, 8172, 8173


Second Edition (June 2004)
© Copyright International Business Machines Corporation 2004. All rights reserved.
US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.

Contents
Overview . . . . . . . . . . . . . .v
Safety information . . . . . . . . . . . .v
Additional information resources . . . . . . .v
Tools required . . . . . . . . . . . . . .v
Handling static-sensitive devices . . . . . . .v
Replacing customer replaceable units
(CRUs) . . . . . . . . . . . . . . .1
Opening the cover . . . . . . . . . . . .1
Locating components . . . . . . . . . . .2
Identifying parts on the system board . . . . . .3
Removing and replacing the power supply . . . .3
Removing and replacing the system board assembly 7
Removing and replacing the microprocessor . . .10
Removing and replacing memory modules . . . .15
Removing and replacing a hard disk drive . . . .18
Completing the installation . . . . . . . . .19
Updating (flashing) BIOS from a diskette . . . .21
© Copyright IBM Corp. 2004 iii

iv Hardware Removal and Replacement Guide

Overview
This guide contains instructions for replacing the following customer replacement
units (CRUs):
v Power supply
v System board
v Microprocessor
v Hard disk drive
v Memory modules
Safety information
Do not open your computer or attempt any repair before reading the “Important
safety information” in the Quick Reference that was included with your computer. If
you no longer have this copy of the Quick Reference, you can obtain one online
from the IBM Web site at http://www.ibm.com/pc/support.
Additional information resources
If you have Internet access, the most up-to-date manuals for your computer are
available from the World Wide Web. To access this information, point your browser
to: http://www.ibm.com/pc/support
Type your machine type and model number in the Quick path field, and click Go.
Tools required
To replace some CRUs in your computer, you might need a flat-blade or Phillips
screwdriver. Additional tools might be needed for certain CRUs.
Handling static-sensitive devices
Static electricity, although harmless to you, can seriously damage computer
components and CRUs.
When you are replacing a CRU, do not open the static-protective package
containing the new CRU until the defective CRU has been removed from the
computer and you are ready to install the new CRU.
When you handle CRUs and other computer components, take these precautions to
avoid static-electricity damage:
v Limit your movement. Movement can cause static-electricity to build up around
you.
v Always handle CRUs and other computer components carefully. Handle
adapters, memory modules, system boards, and microprocessors by the edges.
Never touch any exposed circuitry.
v Prevent others from touching the CRUs and other computer components.
© Copyright IBM Corp. 2004 v

v Before you replace a new CRU, touch the static-protective package containing
the CRU 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, remove the new CRU from the static-protective packaging, and
install it directly in the computer without setting the CRU down. When this is
not possible, place the static-protective package that the CRU came in on a
smooth, level surface and place the CRU on it.
v Do not place the CRU on the computer cover or other metal surface.
vi Hardware Removal and Replacement Guide

Replacing customer replaceable units (CRUs)
Attention
Do not open your computer or attempt any repair before reading the “Safety
notices” in the Quick Reference that was included with your computer. If you
no longer have this copy of the Quick Reference, you can obtain one online
from the IBM Web site at http://www.ibm.com/pc/support.
Opening the cover
Important
Turn off the computer and wait 3 to 5 minutes to let the computer cool
before opening the cover.
To open the cover:
1. Remove any media (diskettes, CDs, or tapes) from the drives, shut down your
operating system, and turn off all attached devices.
2. Unplug all power cords from electrical outlets.
3. Disconnect all cables attached to the computer. This includes power cords,
input/output (I/O) cables, and any other cables that are connected to the
computer.
4. Remove the floor stand, if attached.
5. If a cover lock is installed, unlock the cover.
6. Press inward on the two buttons and pivot the top cover upward as illustrated.
© Copyright IBM Corp. 2004 1

Locating components
The following illustration will help you locate the various components in your
computer.
1 Diskette drive lock 5 Power supply assembly
2 Memory modules 6 CD or DVD drive (hard disk drive is
under the CD drive)
3 Battery 7 CD or DVD drive lock
4 PCI riser
2 Hardware Removal and Replacement Guide