IBM ThinkCentre 8105 Parts list manual

ThinkCentre
™
Hardware Replacement Guide
Ty pe s 8104, 8105, 8106, 8107
Ty pe s 8108, 8109, 8117, 8118
Ty pe s 8119, 8120, 8121


ThinkCentre
™
Hardware Replacement Guide
Ty pe s 8104, 8105, 8106, 8107
Ty pe s 8108, 8109, 8117, 8118
Ty pe s 8119, 8120, 8121


First Edition (April 2005)
©Copyright International Business Machines Corporation 2005. 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 for replacing CRUs......v
Safety information for replacing FRUs ......v
Additional information resources .......v
Tools required .............vi
Handling static-sensitive devices .......vi
Chapter 1. Locations .........1
Locating the connectors on the front of your
computer ...............1
Locating the connectors on the rear of your computer 2
Locating components ...........3
Identifying parts on the system board ......4
Chapter 2. Replacing hardware .....5
Opening the cover ............5
Replacing the power supply .........6
Replacing the system board .........8
Replacing the microprocessor ........13
Replacing the hard disk drive ........17
Replacing the optical drive .........19
Replacing amemory module ........20
Replacing aPCI adapter ..........22
Replacing the internal speaker ........23
Replacing akeyboard ...........25
Replacing amouse ............25
Completing the parts replacement .......26
Updating (flashing) BIOS from adiskette or
CD-ROM ...............27
©Copyright IBM Corp. 2005 iii

iv Hardware Replacement Guide

Overview
This guide is intended to be used by customers who are replacing Customer
Replaceable Units (CRUs) as well as trained service personnel who are replacing
Field Replaceable Units (FRUs). In this document, CRUs and FRUs will be referred
to as parts.
This guide does not include procedures for all parts. It is expected that cables,
switches, and certain mechanical parts can be replaced by trained service personnel
without the need for step-by-step procedures.
This guide contains instructions for replacing the following parts:
Note: Use only parts provided by IBM.
vPower supply
vSystem board
vMicroprocessor
vHard disk drive
vOptical drive
vMemory module
vPCI adapter card
vInternal speaker
vKeyboard
vMouse
Safety information for replacing CRUs
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.
To obtain acopy of the Quick Reference go to the World Wide Web at
http://www.ibm.com/pc/support/.
Safety information for replacing FRUs
Do not open your computer or attempt any repair before reading the “Important
safety information” in the Hardware Maintenance Manual (HMM) for the computer.
To obtain acopy of the HMM,go to the World Wide Web at
http://www.ibm.com/pc/support/.
Additional information resources
If you have Internet access, the most up-to-date information for your computer is
available from the World Wide Web.
You can find the following information:
vCRU removal and installation instructions
vCRU removal and installation videos
vPublications
vTroubleshooting information
vParts information
©Copyright IBM Corp. 2005 v

vDownloads and drivers
vLinks to other useful sources of information
To access this information, point your browser to
http://www.ibm.com/pc/support/
Tools required
To replace some parts in your computer, you might need aflat-blade or Phillips
screwdriver.
Handling static-sensitive devices
Static electricity, although harmless to you, can seriously damage computer
components and parts.
When replacing apart, 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.
When you handle parts and other computer components, take these precautions to
avoid static-electricity damage:
vLimit your movement. Movement can cause static electricity to build up around
you.
vAlways handle parts and other computer components carefully. Handle
adapters, memory modules, system boards, and microprocessors by the edges.
Never touch any exposed circuitry.
vPrevent others from touching the parts and other computer components.
vBefore you replace anew part, touch the static-protective package containing the
part to ametal 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.
vWhen possible, remove the new part from the static-protective packaging 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.
vDo not place the part on the computer cover or other metal surface.
vi Hardware Replacement Guide

Chapter 1. Locations
This chapter provides illustrations to help locate the various connectors, controls
and components of the computer. To open the computer cover, see “Opening the
cover” on page 5.
Locating the connectors on the front of your computer
The following illustration shows the location of connectors on the front of the
computer.
1 Headphone connector 3 USB connector
2 Microphone connector 4 USB connector
©Copyright IBM Corp. 2005 1

Locating the connectors on the rear of your computer
The following illustration shows the location of connectors on the rear of the
computer.
1 PCI adapter connector 8 Ethernet connector
2 Integrated cable lock 9 USB connectors
3 Standard mouse connector 10 Audio line out connector
4 Standard keyboard connector 11 Audio line in connector
5 VGA monitor connector 12 USB connectors
6 Parallel connector 13 Power supply diagnostic LEDs
7 Serial connector 14 Power connector
2Hardware Replacement Guide

Locating components
The following illustration will help you locate the various components in your
computer.
1 PCI riser 5 Hard disk drive
2 Power supply assembly 6 Internal speaker
3 Optical drive eject button 7 Cable clip
4 Optical drive 8 Rear fan bracket assembly
Chapter 1. Locations 3

Identifying parts on the system board
The system board (sometimes called the planar or motherboard) is the main circuit
board in your computer. It provides basic computer functions and supports a
variety of devices.
The following illustration shows the locations of parts on the system board.
1 SATA connector 9 Internal speaker connector
2 IDE connector 10 Memory connector 1
3 PCI riser connector 11 Memory connector 2
4 Front panel connector 12 Microprocessor fan connector
5 12v power connector 13 Rear fan connector
6 Power connector 14 Clear CMOS/Recovery jumper
7 System fan connector 15 Battery
8 Microprocessor
Note: Your computer has support for two double data rate 2(DDR2) dual inline
memory modules (DIMMs).
4Hardware Replacement Guide

Chapter 2. Replacing hardware
Attention
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 or in the
Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Quick
Reference or HMM,go to http://www.ibm.com/pc/support/.
Note: Use only parts provided by IBM.
Opening the cover
Important
Turn off your computer and wait 3to 5minutes to let the computer cool
before opening the computer cover.
To open the computer 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 any locking devices such as aKensington lock that secure the cover.
5. Press the buttons on the sides of the computer and pivot the cover upward to
open the computer as shown.
©Copyright IBM Corp. 2005 5

Replacing the power supply
Attention
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 or in the
Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Quick
Reference or HMM,go to http://www.ibm.com/pc/support/.
This section provides instructions on how to replace the power supply.
1. Open the computer cover. See “Opening the cover” on page 5.
2. Pivot the drive bay assembly upward to gain access to the power supply.
3. Remove the PCI riser. See “Replacing aPCI adapter” on page 22.
4. Remove the three screws at the rear of the chassis securing the power supply.
6Hardware Replacement Guide

5. Disconnect power supply cables 1 and 2 from the system board.
6. Disconnect the power supply cables from all the drives.
7. Remove the power supply assembly from the computer.
8. Install the new power supply assembly into the chassis so that the screw holes
in the power supply assembly align with those in the chassis.
Note: Use only the screws that are provided.
9. Install and tighten the three screws at the rear of the chassis to secure the
power supply assembly.
10. Reconnect all the power supply cables to the drives and the system board.
11. Reinstall the PCI riser.
12. Go to “Completing the parts replacement” on page 26.
Chapter 2. Replacing hardware 7

Replacing the system board
Attention
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 or in the
Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Quick
Reference or HMM,go to http://www.ibm.com/pc/support/.
This section provides instructions on how to replace the system board.
1. Open the computer cover. See “Opening the cover” on page 5.
2. Pivot the drive bay assembly upward to gain access to the system board.
3. Remove the PCI riser. See “Replacing aPCI adapter” on page 22.
4. Locate the rear fan bracket assembly and the rear fan connector. See “Locating
components” on page 3and “Identifying parts on the system board” on page
4.
5. Disconnect the rear fan cable and remove the rear fan bracket assembly by
lifting it off the system board.
6. Carefully take note of the location of all cable connections on the system
board. It will be necessary to reconnect them properly when installing anew
system board.
7. Disconnect all cables connected to the system board. See “Identifying parts on
the system board” on page 4.
8. Take note of the location of the memory modules and remove them from the
failing system board. See “Replacing amemory module” on page 20. Return
here after removing the memory modules.
8Hardware Replacement Guide

9. Remove the heat sink 1 from the system board by pivoting the lever 2
securing the heat sink until it is fully in the up position. Carefully lift the heat
sink off of the system board.
Note: Place the heat sink on its side on aclean, flat surface so the thermal
interface on the bottom of the heat sink does not touch the surface and
become contaminated.
10. Use the handle at the rear of the system board to pull the system board and
tray out the rear of the chassis.
11. Place the failing system board next to the new system board on aclean, flat
surface.
Chapter 2. Replacing hardware 9

12. To remove the microprocessor from the failing system board, release the lever
3 securing the microprocessor 2 then pivot the microprocessor retainer 1
until it is fully open.
13. Use the vacuum pen 1 to remove the microprocessor from the system board
socket by lifting it out of the socket.
Note: If you are replacing afailing microprocessor, you will receive avacuum
pen with the new microprocessor.
Important
Do not touch the gold contacts on the bottom of the microprocessor. If
you must touch the microprocessor, touch only the sides.
10 Hardware Replacement Guide

a. Take notice of the orientation of the notches 1 on the microprocessor.
This is important when installing the microprocessor on the new system
board.
b. Do not drop anything on the socket while it is open. Keep all contacts as
clean as possible.
14. On the new system board, release the lever securing the microprocessor
retainer then pivot the retainer until it is fully open.
15. Position the microprocessor so that the notches on the microprocessor are
aligned with the tabs in the microprocessor socket.
Important
To avoid damaging the microprocessor contacts, do not tilt the
microprocessor when installing it into the socket.
16. Use the vacuum pen 1 to lower the microprocessor straight down into the
system board socket of the new system board.
Chapter 2. Replacing hardware 11

17. Lower the microprocessor retainer 1 and then lower the lever 3 to secure
the retainer. Make sure the lever is securely locked into position.
Note: There will be ablack plastic cover on the microprocessor retainer to
protect the socket on the new system board. When you lock the
microprocessor in position, remove the cover. Place the black cover on
the microprocessor retainer of the failing system board.
18. Install the new system board and tray into the rear of the chassis until it is
fully seated.
19. Place the heat sink1into position and lower the lever 2 to secure the heat
sink.
20. Reinstall the memory modules on the new system board in the same location
as they were on the failing system board. See “Replacing amemory module”
on page 20.
21. Reconnect all cables that were disconnected from the system board. See
“Identifying parts on the system board” on page 4.
22. Reinstall the PCI riser that was removed. See “Replacing aPCI adapter” on
page 22.
23. Reinstall the rear fan bracket assembly and connect the fan cable to the system
board.
24. Go to “Completing the parts replacement” on page 26.
12 Hardware Replacement Guide