Lenovo M55 User Manual

Hardw are Replacement Guide Ty pe s 8012, 8794, 8798, 8802 Ty pe s 8806, 8811, 8816

First Edition (July 2006)

U.S. GOVERNMENT USERS – RESTRICTED RIGHTS: Our products and/or services are provided with RESTRICTED RIGHTS. Use, duplication or disclosure by the Government is subject to the GSA ADP Schedule contract with Lenovo Group Limited, if any, or the standard terms of this commercial license, or if the agency is unable to accept this Program under these terms, then we provide this Program under the provisions set forth in Commercial Computer Software–Restricted Rights at FAR 52.227-19, when applicable, or under Rights in Data-General, FAR 52.227.14 (Alternate III).

Overview . . . . . . . . . . . . . .v

Safety information for customers . . . . . . .v

Safety information for service personnel . . . . .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

Removing the hard disk drive mounting bracket . .7

Removing and replacing the front bezel . . . . .8

Replacing the power supply . . . . . . . . .8

Replacing the system board . . . . . . . . .10

Replacing the microprocessor . . . . . . . .16

Replacing a memory module . . . . . . . .23

Replacing an adapter . . . . . . . . . . .24

Replacing the hard disk drive . . . . . . . .25

Replacing an optical drive . . . . . . . . .26

Replacing the diskette drive . . . . . . . . .28

Replacing the system fan assembly . . . . . .29

Replacing the keyboard . . . . . . . . . .31

Replacing the mouse . . . . . . . . . . .32

Replacing the internal speaker . . . . . . . .33

Completing the installation . . . . . . . . .34

Updating (flashing) BIOS from a diskette or

CD-ROM . . . . . . . . . . . . . . .36

Appendix. Notices . . . . . . . . . .37

Television output notice . . . . . . . . . .38

Trademarks . . . . . . . . . . . . . .38

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 parts provided by Lenovo™.

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 System fan assembly v Keyboard v Mouse v Internal speaker

Safety information for customers

Do not open your computer or attempt any repair before reading the “Important safety information” in the Safety and warranty guide that was included with your computer. If you no longer have this copy of the Safety and warranty guide, you can obtain one online from the Support Web site at http://www.lenovo.com/ think/support.

Safety information for service personnel

Do not attempt any repair before reading the “Important safety information” in the Hardware Maintenance Manual (HMM) for the computer. Yo u can find the HMM on the Support Web site at http://www.lenovo.com/think/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

v Support phone list

access this information, go to http://www.lenovo.com/think/support.

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 Optional PCI adapter 2 Memory modules 7 Hard disk drive 3 System board 8 Internal speaker 4 Power supply 9 Diskette drive 5 PCI Express 16 adapter

connector

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

1 Power supply diagnostic LEDs 9 Serial connector (COM 2) (some models) 2 Voltage selection switch 10 USB connectors (8) 3 Power connector 11 Ethernet connector 4 Audio line out connector 12 PCI Express x16 adapter connector 5 Audio line in connector 13 PCI Express x1 adapter connector 6 VGA monitor connector 14 PCI adapter connector 7 Parallel connector 15 PCI adapter connector 8 Serial connector (COM 1)

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.

1 Diskette drive connector 13 PCI Express (x16) graphics adapter

connector (some models)

2 Speaker connector 14 PCI Express (x1) adapter connector 3 Memory connector 4 15 PCI adapter connector 1 4 Memory connector 3 16 PCI adapter connector 2 5 Memory connector 2 17 System fan connector (not used) 6 Memory connector 1 18 Battery 7 Front panel I/O connector 19 Temperature sensor connector 8 Serial connector (COM2) 20 Microprocessor fan connector 9 Serial ATA IDE connectors (5) 21 Microprocessor 10 Clear CMOS/Recovery jumper 22 Microprocessor heat sink 11 Cover presence switch connector 23 12v power connector 12 Power supply 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 Safety and warranty guide that was included with your computer or in the Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Safety and warranty guide or HMM, go to the Support Web site at http://www.lenovo.com/ think/support.

Notes:

1. Use only parts provided by Lenovo.

2. Your computer might look slightly different than the illustrations in this

chapter.

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 components” on page 1.

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.

6. When the hard disk drive mounting bracket 1 is in position, access to some

of the components inside the chassis is restricted. It can be easily removed for better access.

See “Removing the hard disk drive mounting bracket” on page 7.

To replace the computer cover, see “Completing the installation” on page 34.

6 Hardware Replacement Guide

Removing the hard disk drive mounting bracket

The hard disk drive mounting bracket can easily be removed to provide better access to some CRUs and FRUs.

1. After the cover has been removed, pivot the hard disk drive bracket outward

from the rear of the chassis.

2. Remove the hard disk drive bracket by sliding it out of the chassis at the hinge

end. The hard disk drive cables are long enough to allow the bracket to be set to the side without disconnecting cables.

To illustrate the internal views of the chassis more clearly, many of the

Note:

illustrations in this document are shown without the hard disk drive bracket in position.

Chapter 2. Replacing hardware 7

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