ThinkCentre
™
Hardw are Replacement Guide
Ty pe s 8122, 8123, 8124
Ty pe s 8131, 8137, 8138
ThinkCentre
™
Hardw are Replacement Guide
Ty pe s 8122, 8123, 8124
Ty pe s 8131, 8137, 8138
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 components . . . . . . . . . . .1
Locating controls and connectors on the front of the
computer . . . . . . . . . . . . . . .2
Locating connectors on the rear of the computer . .3
Identifying parts on the system board . . . . . .4
Chapter 2. Replacing hardware . . . . .5
Removing the computer cover . . . . . . . .5
Pivoting or removing the optional hard disk drive
mounting bracket . . . . . . . . . . . . .7
Removing and replacing the front bezel . . . . .8
Replacing the power supply . . . . . . . . .8
Replacing the system board assembly . . . . . .12
Replacing the microprocessor . . . . . . . .19
Replacing a memory module . . . . . . . .25
Replacing an adapter . . . . . . . . . . .26
Replacing the hard disk drive . . . . . . . .27
Replacing an optical drive . . . . . . . . .28
Replacing the diskette drive . . . . . . . . .30
Replacing the keyboard . . . . . . . . . .30
Replacing the mouse . . . . . . . . . . .31
Replacing the internal speaker . . . . . . . .31
Completing the installation . . . . . . . . .33
Updating (flashing) BIOS from a diskette or
CD-ROM . . . . . . . . . . . . . . .34
© 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 guide CRUs and FRUs will often 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.
Note: Use only the parts provided by IBM.
This guide contains procedures for replacing the following parts:
v Power supply
v System board
v Microprocessor
v Memory modules
v Optional PCI adapter
v Hard disk drive
v Optical drive
v Diskette drive
v Keyboard
v Mouse
v Internal speaker
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. If
you no longer have this copy of the Quick Reference, you can obtain one online
from the World Wide We b at http://www.ibm.com/pc/support.
Safety information for replacing FRUs
Do not attempt any repair before reading the “Important safety information” in the
Hardware Maintenance Manual (HMM) for the computer. You can find the HMM on
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:
v CRU removal and installation instructions
v Publications
v Troubleshooting information
v Parts information
v Downloads and drivers
v Links to other useful sources of information
access this information, go to http://www.ibm.com/pc/support.
To
© Copyright IBM Corp. 2005 v
Tools required
To replace some parts in your computer, you will need a flat-blade or Phillips
screwdriver. Additional tools might be needed for certain parts.
Handling static-sensitive devices
Static electricity, although harmless to you, can seriously damage computer
components.
When you are replacing a part, 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:
v Limit your movement. Movement can cause static-electricity to build up around
you.
v Always handle parts 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 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, 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.
v Do 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 remove the computer cover, see “Removing
the computer cover” on page 5.
Locating components
The following illustration will help you locate the various components in your
computer.
1 Optical drive 6 System board
2 Memory modules 7 Lower drive cage (diskette drive and
hard disk drive)
3 Power supply 8 Internal speaker
4 PCI adapter connector 9 Diskette drive
5 Optional PCI adapter
© Copyright IBM Corp. 2005 1
Locating controls and connectors on the front of the computer
This section shows the various external connectors on the computer to which you
can attach external devices.
1
3
9
4
1 IEEE 1394 connector (some
4 Microphone connector
models)
2 USB connector 5 Headphone connector
3 USB connector
2 Hardware Replacement Guide
Locating connectors on the rear of the computer
The following illustration shows the location of connectors on the rear of the
computer.
1 Power supply diagnostic
11 Ethernet connector
LEDs
2 Voltage selection switch 12 USB connectors (2)
3 Power connector 13 Standard keyboard connector
4 Audio line in connector 14 Standard mouse connector
5 Audio line out connector 15 PCI Express x16 adapter connector (some
models)
6 Microphone connector 16 PCI adapter connector
7 Serial connector (COM 1) 17 PCI adapter connector
8 Parallel connector 18 PCI Express x1 adapter connector
9 VGA monitor connector 19 Serial connector (COM 2) (some models)
10 USB connectors (2)
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 Internal speaker connector 12 PCI adapter connector
2 Memory connector 4 13 PCI adapter connector
3 Memory connector 3 14 Serial connector (COM 2)
4 Memory connector 2 15 PCI Express x1 adapter connector
5 Memory connector 1 16 Clear CMOS/Recovery jumper
6 Front panel connector 17 Battery
7 Power supply connector 18 Microprocessor fan connector
8 PATA IDE connector 19 Microprocessor
9 System fan connector 20 Microprocessor heat sink
10 SATA IDE connectors (4) 21 12V power connector
11 PCI Express x16 graphics connector 22 Diskette drive connector
4 Hardware Replacement Guide
Chapter 2. Replacing hardware
Attention:
Do not remove the computer cover 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 the parts provided by IBM.
Removing the computer cover
Important
Turn off the computer and wait 3 to 5 minutes to let the computer cool
before removing 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. See “Locating controls and connectors on the front of the computer”
on page 2 and “Locating connectors on the rear of the computer” on page 3.
4. Remove any locking devices such as a padlock or Kensington lock that secure
the computer cover.
5. Press the cover-release button on the right side cover, slide the cover to the
rear, and remove.
© Copyright IBM Corp. 2005 5
6. Some models have an optional hard disk drive mounting bracket 1 installed.
When this bracket is installed, access to some of the CRUs or FRUs inside the
chassis is restricted.
Note: There appears to be two drive bays in the bracket. However, due to
thermal restrictions, only the bay 2 at the rear of the chassis can be used to
install a hard disk drive.
See “Pivoting or removing the optional hard disk drive mounting bracket” on
page 7.
To replace the computer cover, see “Completing the installation” on page 33.
6 Hardware Replacement Guide
Pivoting or removing the optional hard disk drive mounting bracket
The optional hard disk drive mounting bracket can easily be pivoted upward or
removed if necessary to enable replacement of some CRUs and FRUs.
To pivot the optional hard disk drive bracket upward, pull outward at the bottom
of the bracket.
Note: You might have to disconnect the cables attached to the optional hard disk
drive.
If it is necessary to remove the optional hard disk drive mounting bracket,
disconnect the cables attached to the optional hard disk drive, remove the two
screws, and lift the bracket out of the chassis.
Chapter 2. Replacing hardware 7
Removing and replacing the front bezel
1. Remove the computer cover. See “Removing the computer cover” on page 5.
2. To release the front bezel from the chassis, press downward on the two plastic
tabs 1 and push the bezel outward as shown.
3. To reinstall the bezel, align the plastic tabs 1 on the bottom of the bezel with
the corresponding holes in the chassis, then snap it into position at the bottom
and top of the chassis.
4. Go to “Completing the installation” on page 33.
Replacing the power supply
Attention:
Do not remove the computer cover 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: You will need a phillips screwdriver.
1. Remove the computer cover. See “Removing the computer cover” on page 5.
Note: For this procedure, it helps to lay the computer on its side.
8 Hardware Replacement Guide
2. To access the 12 V power connector, remove the lower drive cage
thumb-screw and slide the lower drive cage toward the rear and out of the
bay. Place the drive cage out of your way without disconnecting the drive
signal cables.
3. Disconnect the power supply cables 1 and 2 from the system board.
4. Disconnect the power cable from each of the drives. Note the location of each
cable that is disconnected.
Chapter 2. Replacing hardware 9
5. Remove the four screws that secure the power supply at the rear of the
chassis.
6. Press inward on the metal retainer inside the chassis and slide the power
supply toward the front of the chassis and lift it out of the chassis as shown.
7. Install the new power supply into the chassis so that the screw holes in the
power supply align with those in the chassis.
Note: Use only the screws provided with the new power supply.
8. Install and tighten the four screws that secure the power supply.
10 Hardware Replacement Guide
9. Reconnect power supply connectors 1 and 2 to the system board.
10. Reinstall the lower drive cage and secure it with the thumb-screw.
11. Reconnect a power supply connector to each of the drives.
12. Go to “Completing the installation” on page 33.
Chapter 2. Replacing hardware 11
Replacing the system board assembly
Attention:
Do not remove the computer cover 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.
1. Turn off the computer and allow it to cool for one hour.
2. Remove the computer cover. See “Removing the computer cover” on page 5.
Note: For this procedure, it helps to lay the computer on its side.
3. Carefully note the location of all cable connections on the system board. It will
be necessary to reconnect them correctly after you install the new system
board assembly. See “Identifying parts on the system board” on page 4 to
locate the cables.
Important
Note the cable routing. It is important to route the cables the same way
after you install the new system board.
4. Remove the air baffle by squeezing the two tabs 1 together and pulling it
out of the chassis.
5. Remove any PCI adapter cards. See “Replacing an adapter” on page 26.
12 Hardware Replacement Guide
6. Remove the lower drive cage by removing the thumb-screw and sliding the
lower drive cage toward the rear of the computer.
7. Disconnect the cables attached to the drives in the lower drive cage and set
the drive cage to the side.
8. Disconnect all cables connected to the system board. See “Identifying parts on
the system board” on page 4.
9. Remove screws 1 through 7.
10. Slide the system board toward the front of the computer to disengage it from
the mounting tabs and lift it out.
11. Place the defective system board next to the new system board on a clean, flat
surface.
12. Remove all memory modules from the defective system board and install
them in the same connector on the new system board. See “Replacing a
memory module” on page 25. Return here after installing the memory
modules on the new system board.
Chapter 2. Replacing hardware 13
13. Release and pivot lever 1 upward. Remove the heat sink 2 from the
system board by carefully lifting it up and off the mounting bracket. Place the
heat sink on its side on a clean, flat surface so the thermal material on the
bottom of the heat sink does not touch the surface and become contaminated.
14. Release and pivot locking lever 2 securing the microprocessor 1, then
pivot the microprocessor retainer 3 until it is open.
14 Hardware Replacement Guide
15. Using the vacuum pen1, remove the microprocessor from the system board
socket by lifting it straight up and out of the socket.
Important
Do not touch the gold contacts on the bottom of the microprocessor. If
you must touch the microprocessor, touch only the sides.
Notes:
a. Notice of the orientation of the notches 1 on the microprocessor. This is
important when reinstalling the microprocessor on the new system board.
b. Do not drop anything onto the microprocessor socket while it is exposed.
The socket pins must be kept as clean as possible.
Chapter 2. Replacing hardware 15
16. On the new system board, release and pivot the locking lever, then pivot the
microprocessor retainer until it is open.
Note: There will be a black protective cover on the retainer to protect the
microprocessor socket. As you close the microprocessor retainer, remove the
cover. Place the black protective cover on the microprocessor retainer of the
defective system board.
17. 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.
18. Using the vacuum pen 1, lower the microprocessor straight down into the
microprocessor socket.
16 Hardware Replacement Guide
19. Pivot the microprocessor retainer 3 to the closed position and rotate the
locking lever 2 to secure the microprocessor 1. Make sure the locking
lever is engaged with the retainer tab when securing the microprocessor.
20. Align the beveled corners of the heat sink and the mounting bracket. Then
position the heat sink 2 on the heat sink mounting bracket. Lower the lever
1 to secure the heat sink.
Chapter 2. Replacing hardware 17
21. Install the new system board assembly into the computer chassis by aligning
the four slots in the metal plate on the bottom of the system board with the
tabs in the chassis. Then slide the system board toward the rear of the chassis.
Important
Make sure to correctly align the metal plate on the bottom of the system
board with the tabs in the chassis. Otherwise, the system board might be
damaged when you install the screws.
22. Align the seven screw holes, and install the screws.
23. Reinstall all adapter cards. See “Replacing an adapter” on page 26.
24. Reconnect all cables that were disconnected from the system board. Make sure
all cables are routed correctly. See “Identifying parts on the system board” on
page 4 for cable locations.
25. Reinstall the lower drive cage and secure it with the thumb screw.
26. Reconnect the signal and power cables to the drives in the lower drive cage.
27. Reinstall the air baffle.
28. Go to “Completing the installation” on page 33.
18 Hardware Replacement Guide
Replacing the microprocessor
Attention:
Do not remove the computer cover 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.
Important
Leave your computer turned off for at least one hour before removing the
microprocessor to allow the thermal interface between the microprocessor and
the heat sink time to cool down.
Important
When you receive a new microprocessor, you will also receive a new heat
sink and vacuum pen. You must use the new heat sink with the new
microprocessor. If you use the old heat sink with the new microprocessor,
your computer might overheat causing intermittent problems.
Important
Avoid handling the microprocessor with your hands, and avoid contact with
the microprocessor contacts. Use the vacuum pen provided to remove and
install the microprocessor. If you must touch the microprocessor, touch only
the sides.
1. Remove the computer cover. See “Removing the computer cover” on page 5.
Note: For this procedure, it helps to lay the computer on its side.
Chapter 2. Replacing hardware 19
2. Remove the air baffle by squeezing the tabs 1 together and pulling it out of
the chassis.
3. Release and pivot lever 1 upward. Remove the heat sink 2 from the
system board by carefully lifting it up and off the mounting bracket.
20 Hardware Replacement Guide
4. Release and pivot locking lever 2 securing the microprocessor 1, then
pivot the microprocessor retainer 3 until it is open.
5. Using the vacuum pen1, remove the microprocessor from the system board
socket by lifting it straight up and out of the socket.
Important
Do not touch the gold contacts on the bottom of the microprocessor. If
you must touch the microprocessor, touch only the sides.
Chapter 2. Replacing hardware 21
Notes:
a. Notice of the orientation of the notches 1 on the microprocessor. This is
important when reinstalling the microprocessor on the system board.
b. Do not drop anything onto the microprocessor socket while it is exposed.
The socket pins must be kept as clean as possible.
6. Make sure that the microprocessor retainer is fully open.
7. Loosen the protective cover 3 that protects the gold contacts on the new
microprocessor 2 but do not remove it. Use the vacuum pen 1 to pick up
the microprocessor then completely remove the cover.
8. Position the microprocessor so that the notches on the microprocessor are
aligned with the tabs in the microprocessor socket.
22 Hardware Replacement Guide
Important
To avoid damaging the microprocessor contacts, do not tilt the
microprocessor when installing it into the socket.
9. Using the vacuum pen 1, lower the microprocessor straight down into the
microprocessor socket.
Note: Install the black protective cover that was removed from the new
microprocessor onto the defective microprocessor after the installation is
complete.
10. Pivot the microprocessor retainer3 to the closed position and pivot the
locking lever 2 to secure the microprocessor 1. Make sure the locking
lever is engaged with the retainer tab when securing the microprocessor.
Chapter 2. Replacing hardware 23
11. Align the beveled corners of the new heat sink and the mounting bracket.
Then position the heat sink 2 on the heat sink mounting bracket. Lower the
lever 1 to secure the heat sink.
12. Reinstall the air baffle.
13. Go to “Completing the installation” on page 33.
24 Hardware Replacement Guide
Replacing a memory module
Attention:
Do not remove the computer cover 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.
1. Remove the computer cover. See “Removing the computer cover” on page 5.
Note: For this procedure, it helps to lay the computer on its side.
2. Locate the memory module connectors. See “Locating components” on page 1.
3. Open the retaining clips, and lift the memory module out of its connector.
4. Ensure that the notch on the new memory module 1aligns correctly with the
connector key 2 on the system board. Push the memory module straight
down into the connector until the retaining clips close.
5. Go to “Completing the installation” on page 33.
Chapter 2. Replacing hardware 25
Replacing an adapter
Attention:
Do not remove the computer cover 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.
1. Remove the computer cover. See “Removing the computer cover” on page 5.
Note: For this procedure, it helps to lay the computer on its side.
2. At the rear of the computer, push the blue adapter latch as indicated and pivot
it to the open position.
3. Remove the adapter by pulling it straight out of the adapter connector.
4. Install the new adapter into the same adapter connector. Ensure the adapter is
fully seated into the adapter connector.
5. At the rear of the computer, pivot the blue adapter latch to the closed position
to secure the adapters.
6. Go to “Completing the installation” on page 33.
26 Hardware Replacement Guide
Replacing the hard disk drive
Attention:
Do not remove the computer cover 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.
Important
When you receive a new hard disk drive, you will also receive a Product
Recovery CD. The Product Recovery CD will enable you to restore the contents
of the hard disk to the same state as when your computer was originally
shipped from the factory. For more information on recovering
factory-installed software, refer to ″Recovering Software″ in the Quick
Reference.
1. Remove the computer cover. See “Removing the computer cover” on page 5.
Note: For this procedure, it helps to lay the computer on its side.
2. Remove the lower drive cage by removing the thumb-screw and sliding the
lower drive cage toward the rear of the computer.
3. Disconnect the signal and power cables from the hard disk drive.
4. Remove the hard disk drive from the lower drive cage by pulling the blue
handle.
5. Remove the defective hard disk drive from the blue bracket by flexing the
bracket.
Chapter 2. Replacing hardware 27
6. To install the new hard disk drive into the blue bracket, flex the bracket and
align the pins 1 through 4on the bracket with the holes in the hard disk
drive. Do not touch the circuit board 5 on the bottom of the hard disk drive.
7. Insert the new hard disk drive into the lower drive cage with its circuit board
side facing downward.
8. Connect the power and signal cables to the new hard disk drive. See
“Identifying parts on the system board” on page 4.
9. Reinstall the lower drive cage and secure it with the thumb screw.
10. Go to “Completing the installation” on page 33.
Replacing an optical drive
Attention:
Do not remove the computer cover 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.
1. Remove the computer cover. See “Removing the computer cover” on page 5.
Note: For this procedure, it helps to lay the computer on its side.
2. Remove the front bezel. See “Removing and replacing the front bezel” on page
8.
Note: Some optical drives can be removed without first removing the front
bezel.
28 Hardware Replacement Guide
3. Disconnect the signal and power cables from the rear of the optical drive.
4. Release the optical disk drive by pressing on the blue retainer lever at the side
of the drive and removing it from the front of the computer.
5. Remove the retainer bracket from the failing drive and install it on the new
drive.
6. Slide the new optical drive into the bay from the front until it snaps into
position.
7. Reconnect the signal and power cables to the drive.
8. Reinstall the front bezel. See “Removing and replacing the front bezel” on page
8.
9. To complete the installation, go to “Completing the installation” on page 33.
Chapter 2. Replacing hardware 29
Replacing the diskette drive
Attention:
Do not remove the computer cover 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.
1. Remove the computer cover. See “Removing the computer cover” on page 5.
2. Remove the front bezel. See “Removing and replacing the front bezel” on page
8.
Note: For this procedure, it helps to lay the computer on its side.
3. Disconnect the signal and power cables from the rear of the diskette drive.
4. Release the diskette drive by pressing on the blue retainer lever at the side of
the drive bay and slide it out the front of the computer.
5. Remove the retainer bracket from the failing drive and install it on the new
drive.
6. Slide the new diskette drive into the lower drive cage until it snaps into
position.
7. Reconnect the signal and power cables to the drive.
8. To install the bezel, align the tabs on the bottom of the bezel with the
corresponding holes in the chassis. Pivot the bezel until it snaps into position at
the bottom and top of the chassis.
9. Go to “Completing the installation” on page 33.
Replacing the keyboard
30 Hardware Replacement Guide
Attention:
Do not remove the computer cover 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.
1. Remove any media (diskettes, CDs, or tapes) from the drives, shut down the
computer, and turn off all attached devices.
2. Unplug all power cords from electrical outlets.
3. Locate the connector for the keyboard. See “Locating connectors on the rear of
the computer” on page 3 and “Locating controls and connectors on the front of
the computer” on page 2.
Your keyboard might be connected to the standard keyboard connector 1 at
the rear of the computer or to a USB connector 2 at either the front or rear of
the computer.
4. Disconnect the failing keyboard cable from the computer and connect the new
keyboard cable to the appropriate connector.
5. Go to “Completing the installation” on page 33.
Replacing the mouse
Attention:
Do not remove the computer cover 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.
1. Remove any media (diskettes, CDs, or tapes) from the drives, shut down the
computer, and turn off all attached devices.
2. Unplug all power cords from electrical outlets.
3. Locate the connector for the mouse. See “Locating connectors on the rear of the
computer” on page 3 and “Locating controls and connectors on the front of the
computer” on page 2.
Your mouse might be connected to the standard mouse connector 1 at the
rear of the computer or to a USB connector 2 at either the front or rear of the
computer.
4. Disconnect the failing mouse cable from the computer and connect the new
mouse cable to the appropriate connector.
5. Go to “Completing the installation” on page 33.
Replacing the internal speaker
Attention:
Do not remove the computer cover 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.
Chapter 2. Replacing hardware 31
1. Remove the computer cover. See “Removing the computer cover” on page 5.
Note: For this procedure, it helps to lay the computer on its side.
2. Remove the air baffle by squeezing the two tabs 1 together and pulling it out
of the chassis.
3. Locate the internal speaker connector, see “Identifying parts on the system
board” on page 4.
4. Disconnect the speaker cable from the system board.
5. Slide the speaker 1 upward until it is free from the metal tabs that secure it
at the bottom. Then pivot the bottom of the speaker outward and remove it
from the chassis.
6. Position the bottom of the new speaker into the metal tabs and pivot the top of
the speaker inward until it snaps into position.
7. Reconnect the speaker cable to the system board. See “Identifying parts on the
system board” on page 4.
8. Reinstall the air baffle.
9. Go to “Completing the installation” on page 33.
32 Hardware Replacement Guide
Completing the installation
After replacing a failed part, you need to install any other removed parts, install
the computer cover, and reconnect any cables, including telephone lines and power
cords. Also, depending on the part that was replaced, you might need to confirm
the updated information in the Setup Utility program. See ″Starting the Setup
Utility″ in your Quick Reference or in the Hardware Maintenance Manual.
To complete the installation:
1. Ensure that all components have been reassembled correctly and that no tools
or loose screws are left inside your computer. See “Locating components” on
page 1 for the location of the various components.
2. If this computer has an optional hard disk drive mounting bracket and it was
either pivoted upward or removed, place it back into position and reconnect
any cables that were disconnected from the optional hard disk drive. See
“Pivoting or removing the optional hard disk drive mounting bracket” on page
7.
3. Clear any cables that might impede the replacement of the computer cover.
4. Position the computer cover on the chassis so that the rail guides on the bottom
of the computer cover engage the rails. Then, push the computer cover closed
until it latches.
Chapter 2. Replacing hardware 33
5. Reconnect the external cables. Plug the power cord into the computer then into
a properly grounded power receptacle. See “Locating controls and connectors
on the front of the computer” on page 2 and “Locating connectors on the rear
of the computer” on page 3.
6. If you are replacing the system board you must update (flash) the BIOS. See
“Updating (flashing) BIOS from a diskette or CD-ROM.”
7. To update your configuration, see ″Starting the Setup Utility″ in the Quick
Reference that was included with your computer or in the Hardware Maintenance
Manual.
Updating (flashing) BIOS from a diskette or CD-ROM
Important
Start the Setup Utility program to view your system information. See
“Starting the Setup Utility” in your Quick Reference or in the Hardware
Maintenance Manual. If the serial number and the machine type/model listed
on the Main menu do not match what is printed on the label of your
computer, you must update (flash) the BIOS to change the serial number and
the machine type/model.
To update (flash) the BIOS from a diskette or CD-ROM, do the following:
1. Insert a system program update (flash) diskette or CD-ROM into the
appropriate drive. System program updates are available at
http://www.ibm.com/pc/support on the World Wide Web.
2. Turn on the computer. If it is on already, you must turn it off and back on
again. The update begins.
3. When you are prompted to select a language, press the number on your
keyboard which corresponds to the language then press Enter.
4. When prompted to change the serial number, press Y.
5. Type in the seven character serial number of your computer then press Enter.
6. When prompted to change the machine type/model, press Y.
7. Type in the seven character machine type/model of your computer then press
Enter.
8. Follow the instructions on the screen to complete the update.
34 Hardware Replacement Guide
Part Number: 39J7784
Printed in USA
(1P) P/N: 39J7784
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