Clevo M540N, M545N, M550N, M555N Service Manual. Www.s Manuals.com. M540, M550, Manual

User Manual: Notebook Clevo M550 - Service manuals and Schematics, Disassembly / Assembly. Free.

Open the PDF directly: View PDF .
Page Count: 105 [warning: Documents this large are best viewed by clicking the View PDF Link!]

Manual

Preface

Notebook Computer

M540/M545N/M550/M555N

Service Manual

Preface

Notice

The company reserves the right to revise this publication or to change its contents without notice. Information contained

herein is for reference only and does not constitute a commitment on the part of the manufacturer or any subsequent ven-

dor. They assume no responsibility or liability for any errors or inaccuracies that may appear in this publication nor are

they in anyway responsible for any loss or damage resulting from the use (or misuse) of this publication.

This publication and any accompanying software may not, in whole or in part, be reproduced, translated, transmitted or

reduced to any machine readable form without prior consent from the vendor, manufacturer or creators of this publica-

tion, except for copies kept by the user for backup purposes.

Brand and product names mentioned in this publication may or may not be copyrights and/or registered trademarks of

their respective companies. They are mentioned for identification purposes only and are not intended as an endorsement

of that product or its manufacturer.

Version 1.0

March 2006

Trademarks

Intel, Celeron, and Intel Core are trademarks/registered trademarks of Intel Corporation.

Windows® is a registered trademark of Microsoft Corporation.

Other brand and product names are trademarks and./or registered trademarks of their respective companies.

Preface

III

Preface

About this Manual

This manual is intended for service personnel who have completed sufficient training to undertake the maintenance and

inspection of personal computers.

It is organized to allow you to look up basic information for servicing and/or upgrading components of the M540/

M545N/M550/M555N series notebook PC.

The following information is included:

Chapter 1, Introduction, provides general information about the location of system elements and their specifications.

Chapter 2, Disassembly, provides step-by-step instructions for disassembling parts and subsystems and how to upgrade

elements of the system.

Appendix A, Part Lists

Appendix B, Schematic Diagrams

Preface

IMPORTANT SAFETY INSTRUCTIONS

Follow basic safety precautions, including those listed below, to reduce the risk of fire, electric shock and injury to per-

sons when using any electrical equipment:

1. Do not use this product near water, for example near a bath tub, wash bowl, kitchen sink or laundry tub, in a wet

basement or near a swimming pool.

2. Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote risk of elec-

trical shock from lightning.

3. Do not use the telephone to report a gas leak in the vicinity of the leak.

4. Use only the power cord and batteries indicated in this manual. Do not dispose of batteries in a fire. They may

explode. Check with local codes for possible special disposal instructions.

5. This product is intended to be supplied by a Listed Power Unit (DC Output 20V, 3.25A (65W) minimum AC/DC Adapter, OR by

a DC Output 20V, 4.5A (90W) minimum AC/DC Adapter if you are using the optional port replicator.

CAUTION

Always disconnect all telephone lines from the wall outlet before servicing or disassembling this equipment.

TO REDUCE THE RISK OF FIRE, USE ONLY NO. 26 AWG OR LARGER,

TELECOMMUNICATION LINE CORD

This Computer’s Optical Device is a Laser Class I Product

Preface

Instructions for Care and Operation

The notebook computer is quite rugged, but it can be damaged. To prevent this, follow these suggestions:

1. Don’t drop it, or expose it to shock. If the computer falls, the case and the components could be damaged.

2. Keep it dry, and don’t overheat it. Keep the computer and power supply away from any kind of heating element. This

is an electrical appliance. If water or any other liquid gets into it, the computer could be badly damaged.

3. Follow the proper working procedures for the computer. Shut the computer down properly and don’t forget to save

your work. Remember to periodically save your data as data may be lost if the battery is depleted.

Do not expose the computer

to any shock or vibration.

Do not place it on an unstable

surface.

Do not place anything heavy

on the computer.

Do not expose it to excessive

heat or direct sunlight.

Do not leave it in a place

where foreign matter or mois-

ture may affect the system.

Don’t use or store the com-

puter in a humid environment.

Do not place the computer on

any surface which will block

the vents.

Do not turn off the power

until you properly shut down

all programs.

Do not turn off any peripheral

devices when the computer is

on.

Do not disassemble the com-

puter by yourself.

Perform routine maintenance

on your computer.

Preface

4. Avoid interference. Keep the computer away from high capacity transformers, electric motors, and other strong mag-

netic fields. These can hinder proper performance and damage your data.

5. Take care when using peripheral devices.

Power Safety

The computer has specific power requirements:

• Only use a power adapter approved for use with this computer.

• Your AC adapter may be designed for international travel but it still requires a steady, uninterrupted power supply. If you are

unsure of your local power specifications, consult your service representative or local power company.

• The power adapter may have either a 2-prong or a 3-prong grounded plug. The third prong is an important safety feature; do

not defeat its purpose. If you do not have access to a compatible outlet, have a qualified electrician install one.

• When you want to unplug the power cord, be sure to disconnect it by the plug head, not by its wire.

• Make sure the socket and any extension cord(s) you use can support the total current load of all the connected devices.

• Before cleaning the computer, make sure it is disconnected from any external power supplies.

Use only approved brands of

peripherals.

Unplug the power cord before

attaching peripheral devices.

Do not plug in the power

cord if you are wet.

Do not use the power cord if

it is broken.

Do not place heavy objects

on the power cord.



Power Safety

Warning

Before you undertake

any upgrade proce-

dures, make sure that

you have turned off the

power, and discon-

nected all peripherals

and cables (including

telephone lines). It is

advisable to also re-

move your battery in

order to prevent acci-

dentally turning the

machine on.

Preface

VII

Preface

Battery Precautions

• Only use batteries designed for this computer. The wrong battery type may explode, leak or damage the computer.

• Do not continue to use a battery that has been dropped, or that appears damaged (e.g. bent or twisted) in any way. Even if the

computer continues to work with a damaged battery in place, it may cause circuit damage, which may possibly result in fire.

• Recharge the batteries using the notebook’s system. Incorrect recharging may make the battery explode.

• Do not try to repair a battery pack. Refer any battery pack repair or replacement to your service representative or qualified service

personnel.

• Keep children away from, and promptly dispose of a damaged battery. Always dispose of batteries carefully. Batteries may explode

or leak if exposed to fire, or improperly handled or discarded.

• Keep the battery away from metal appliances.

• Affix tape to the battery contacts before disposing of the battery.

• Do not touch the battery contacts with your hands or metal objects.



Battery Disposal

The product that you have purchased contains a rechargeable battery. The battery is recyclable. At the end of

its useful life, under various state and local laws, it may be illegal to dispose of this battery into the municipal

waste stream. Check with your local solid waste officials for details in your area for recycling options or proper

disposal.

Caution

Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommend-

ed by the manufacturer. Discard used battery according to the manufacturer’s instructions.

Preface

VIII

Preface

Related Documents

You may also need to consult the following manual for additional information:

User’s Manual on CD

This describes the notebook PC’s features and the procedures for operating the computer and its ROM-based setup pro-

gram. It also describes the installation and operation of the utility programs provided with the notebook PC.

Preface

Contents

Introduction ..............................................1-1

Overview .........................................................................................1-1

System Specifications ................................. 1-2

Model Differences ...........................................................................1-5

External Locator - Top View with LCD Panel Open ......................1-6

External Locator - Front & Right Side Views .................................1-7

External Locator - Left Side & Rear View .....................................1-8

External Locator - Bottom View .....................................................1-9

M550N Mainboard Overview - Top (Key Parts) ..........................1-10

M550N Mainboard Overview - Bottom (Key Parts) ....................1-11

M550N Mainboard Overview - Top (Connectors) .......................1-12

M550N Mainboard Overview - Bottom (Connectors) ..................1-13

M540N Mainboard Overview - Top (Key Parts) ..........................1-14

M540N Mainboard Overview - Bottom (Key Parts) ....................1-15

M540N Mainboard Overview - Top (Connectors) .......................1-16

M540N Mainboard Overview - Bottom (Connectors) ..................1-17

Disassembly ...............................................2-1

Overview .........................................................................................2-1

Maintenance Tools ..........................................................................2-2

Connections .....................................................................................2-2

Maintenance Precautions .................................................................2-3

Removing the Battery ......................................................................2-5

Removing the Hard Disk Drive .......................................................2-6

Removing the System Memory (RAM) ..........................................2-9

Removing the Processor ................................................................2-11

Removing the Wireless LAN Module ...........................................2-13

Removing the Bluetooth Module ..................................................2-14

Removing the Optical (CD/DVD) Device ....................................2-15

Removing the Keyboard ................................................................2-16

Removing the Modem .................................................................. 2-17

Part Lists ..................................................A-1

Part List Illustration Location ........................................................ A-2

Top (M550N) ................................................................................. A-3

Bottom (M550N) ........................................................................... A-4

LCD (M550N) ............................................................................... A-5

Top (M555N) ................................................................................. A-6

Bottom (M555N) ........................................................................... A-7

LCD (M555N) ............................................................................... A-8

Top (M540N) ................................................................................. A-9

Bottom (M540N) ......................................................................... A-10

LCD (M540N) ............................................................................. A-11

Top (M545N) ............................................................................... A-12

Bottom (M545N) ......................................................................... A-13

LCD (M545N) ............................................................................. A-14

Schematic Diagrams................................. B-1

System Block Diagram ...................................................................B-2

YONAH 1/2 ....................................................................................B-3

YONAH 2/2 ....................................................................................B-4

Calistoga 1/5, HOST .......................................................................B-5

Calistoga 2/5 ...................................................................................B-6

Calistoga 3/5, DDR .........................................................................B-7

Calistoga 4/5 ...................................................................................B-8

Calistoga 5/5 ...................................................................................B-9

DRII SO-DIMM 0 .......................................................................B-10

DDRII SO-DIMM 1 .....................................................................B-11

PANEL, BRIDGE BATTERY, FAN ...........................................B-12

ICH7-M 1/4, SATA ......................................................................B-13

ICH7-M 2/4, PCI, USB ................................................................B-14

Preface

ICH7-M 3/4, FWH ....................................................................... B-15

ICH7-M 4/4 .................................................................................. B-16

CD-ROM, PC-BEEP, USB2.0*2 ................................................. B-17

CLOCK GENERATOR, CCD ..................................................... B-18

LAN RTL8110SBL ...................................................................... B-19

PCI7412 ........................................................................................ B-20

PCM SOCKET,3 IN 1 SOCKET ................................................. B-21

T8510TE/ GX-L ........................................................................... B-22

ISA BIOS, MINI CARD, NEW CARD ....................................... B-23

TOUCH PAD, LED ..................................................................... B-24

AZALIA CODEC AL880 ............................................................ B-25

AUDIO AMP, USB2.0 ................................................................. B-26

MDC, BT, PWRGD, DDB CON ................................................. B-27

SYSTEM POWER ....................................................................... B-28

+1.8V, +VTT MEM, +1.5VS ....................................................... B-29

+VCORE ...................................................................................... B-30

+1.05VS, +2.5VS ......................................................................... B-31

+VDD3, +VDD5 .......................................................................... B-32

D/D BD (CRT, S-VIDEO, RJ-11) ............................................... B-33

D/D BD(CHARGER, DC IN) ...................................................... B-34

AUDIO BD(JACK, RJ-11, USB) ................................................ B-35

HOT KEY BD(HOTKEY, LED) ................................................. B-36

LED BOARD ............................................................................... B-37

CLICK BOARD ........................................................................... B-38

RJ-45 BOARD ............................................................................. B-39

USB DANGLE BOARD .............................................................. B-40

H8/2111 ........................................................................................ B-41

EXT.COM PORT ......................................................................... B-42

Introduction

Overview 1 - 1

1.Introduction

Chapter 1: Introduction

Overview

This manual covers the information you need to service or upgrade the M540/M545N/M550/M555N series notebook

computer. Information about operating the computer (e.g. getting started, and the Setup utility) is in the User’s Manual.

Information about drivers (e.g. VGA & audio) is also found in User’s Manual. That manual is shipped with the computer.

Operating systems (e.g. DOS, Windows 9x, Windows NT 4.0, Windows 2000, Windows XP, OS/2 Warp, UNIX, etc.) have

their own manuals as do application software (e.g. word processing and database programs). If you have questions about

those programs, you should consult those manuals.

The M540/M545N/M550/M555N series notebook is designed to be upgradeable. See “Disassembly” on page 2 - 1 for

a detailed description of the upgrade procedures for each specific component. Please note the warning and safety infor-

mation indicated by the “” symbol.

The balance of this chapter reviews the computer’s technical specifications and features.

Introduction

1 - 2 System Specifications

1.Introduction

System Specifications

Feature Specification

Processor Intel® Core™ Duo Processor

(478-pin) Micro-FC-PGA Package

T2300/ T2400/ T2500/ T2600/ T2700

65nm (65 Nanometer) Process Technology

2MB On-die L2 Cache & 667MHz FSB

1.66/ 1.83/ 2.0/ 2.16/ 2.33 GHz

Intel® Core™ Solo Processor

(478-pin) Micro-FC-PGA Package

T1300/ T1400

65nm (65 Nanometer) Process Technology

2MB On-die L2 Cache & 667MHz FSB

1.66/ 1.83 GHz

Intel® Celeron® M Processor

(478-pin) Micro-FCPGA Package

410/ 420/ 430

65nm (65 Nanometer) Process Technology

1MB On-die L2 Cache & 533MHz FSB

1.46/ 1.60/ 1.73 GHz

Core Logic Intel 945GM + ICH7-M

Memory Two 200 Pin SO-DIMM Sockets Supporting DDRII (DDR2) 533 / 667 MHz

128-bit Wide DDRII (DDR2) Data Channel

Memory Expandable up to 2GB (256/ 512/ 1024 MB DDRII Modules)

(Note: Do Not Use Other Module Types)

Security Security (Kensington® Type) Lock Slot BIOS Password

BIOS One 4Mb Flash ROM Phoenix™ BIOS, Plug and Play

LCD M550N/M555N Computers:

15.0" XGA (1024*768) Flat Panel TFT

15.0" SXGA+ (1400*1050) Flat Panel TFT

M540N/M545N Computers:

14.0" WXGA (1280*768) Flat Panel TFT

Video Adapter Intel 945GM Integration

Supports Dynamic Video Memory Technology (DVMT) 3.0 - up to 128MB of Video Memory dynamically allocated from

system memory where needed

Supports Analog Monitor Pixel Resolution up to 1600 * 1200 at 85Hz

Supports DirectX 9.1

Storage One Changeable 12.7mm(h) Optical Device (CD/DVD) Type Drive (see “Optional” on page 4 for drive options)

Easy Changeable 2.5" 9.5 mm (h) HDD with SATA (Serial) Interface

Introduction

System Specifications 1 - 3

1.Introduction

Audio Integrated AZALIA Compliant Interface (HDA)

3D Stereo Enhanced Sound System

Sound-Blaster PRO™ Compatible

2 * Built-In Speakers

Built-In Microphone

Keyboard &

Pointing Device

Winkey Keyboard Built-In TouchPad with Scrolling Function

Express Card

Slot

ExpressCard/34/54 Slot

Interface Three USB 2.0 Ports

One External Monitor Port

One Headphone-Out Jack

One Microphone-In Jack

One Line-In Jack

One S/PDIF Output Jack

One RJ-11 Jack for Plug & Play Fax/Modem

One RJ-45 Jack for 10Mb/ 100Mb/ 1000Mb Fast Ethernet

One Mini-IEEE 1394 Port

One S-Video-Out Jack (supports HDTV)

One DC-in Jack

Note: External 7.1 CH Audio Output Support Configurable through Headphone, Microphone, Line-In and S/PDIF Jacks

Card Reader Embedded 4-in-1 Card Reader (MS/ MS PRO/ SD/ MMC)

Communication AZALIA 56K Plug & Play Fax/Modem v.90/92 Compliant

10Mb/ 100Mb/ 1000Mb Fast Ethernet

(Option) Intel PRO/Wireless 3945ABG Wireless LAN Module with PCIe Interface

(Factory Option) Bluetooth Module - Version 2.0

(Factory Option) PC Camera with USB Interface

Power

Management

Supports ACPI 2.0

Power Button as Sleep/Resume Key

Supports Hibernate Mode

Supports Stand by Mode

Supports Battery Low Suspend

Supports Resume from Modem Ring

Supports Wake on LAN

Power Full Range AC/DC Adapter 20V, 3.25A (65 Watts), 100~240V, 47~63Hz

Full Range AC/DC Adapter 20V, 4.5A (90 Watts), 100~240V, 47~63Hz (If Using the Optional Port Replicator)

6 Cell Smart Lithium-Ion Battery Pack, 4000mAH (44.4W)

6 Cell Smart Lithium-Ion Battery Pack, 4400mAH (48.8W)

Feature Specification

Introduction

1 - 4 System Specifications

1.Introduction

Environmental

Spec

Temperature

Operating: 5°C ~ 35°C

Non-Operating: -20°C ~ 60°C

Relative Humidity

Operating: 20% ~ 80%

Non-Operating: 10% ~ 90%

Physical

Dimensions &

Weight

Model A Computers:

333mm (w) * 276mm (d) * 24-33mm (h)

2.4 kg Without Battery

Model B Computers:

333mm (w) * 243mm (d) * 24-33mm (h)

2.2 kg Without Battery

Optional Optical Drive Module Options:

DVD/CD-RW Combo Drive Module

DVD-Dual Drive Module

Port Replicator (10/100 Base-T Ethernet Port, 4 * USB

2.0 Ports, Serial Port, Parallel Port, External Monitor Port,

DC-In Jack)

(Note: Port Replicator requires the supplied 90W

power adapter)

Intel PRO/Wireless 3945ABG Wireless LAN Module with

PCIe Interface

(Factory Option) PC Camera with USB Interface

(Factory Option) Bluetooth Module - Version 2.0

(Factory Option) Swap Battery - 2 ~ 3 Minutes Swap

Time

Charger Box

Feature Specification

Introduction

System Specifications 1 - 5

1.Introduction

Model Differences

This notebook series includes two different model types (each model includes two design styles). The models differ

slightly in design style including the LCD type, and the location of the card reader (the easiest way to differentiate be-

tween the model types is the location of the card reader).

Feature M540N/M545N M550N/M555N

LCD Type 14.0" WXGA (1280 * 768) TFT

15.0" XGA (1024 * 768) TFT

15.0" SXGA+ (1400 * 1050) TFT

4-in-1 Card Front Left Side

Design

Styles

M54ON M545N M55ON M555N

Introduction

1 - 6 External Locator - Top View with LCD Panel Open

1.Introduction

External Locator - Top View with LCD Panel Open

Figure 1

Top View

1. Optional Built-In

PC Camera

2. LCD

3. LED Status

Indicators

4. Hot-Key Buttons

5. Power Button

6. Keyboard

7. TouchPad and

Buttons

8. LED Power &

Communication

Indicators

9. Built-In

Microphone

10. Speakers

M540N

454

M550N

Note: Only M540N Design Style is Pictured

Note: Only M550N Design Style is Pictured

Introduction

External Locator - Front & Right Side Views 1 - 7

1.Introduction

External Locator - Front & Right Side Views Figure 2

Front Views

1. LED Power &

Communication

Indicators

2. LCD Latch

(M550N Only)

3. 4-in-1 Card

Reader (M540N

Only)

Figure 3

Right Side Views

1. Headphone-Out

Jack

2. Microphone-In

Jack

3. USB 2.0 Port

4. RJ-11 Phone

Jack

5. Optical Device

Drive Bay

6. DC-In Jack

M550N

M540N

145

Introduction

1 - 8 External Locator - Left Side & Rear View

1.Introduction

External Locator - Left Side & Rear View

335 6

M550N

Figure 4

Left Side View

1. RJ-45 LAN Jack

2. Vent/Fan Intake

3. 2 * USB 2.0 Ports

4. S/PDIF-Out Jack

5. Line-In Jack

6. Mini-IEEE 1394

Port

7. ExpressCard Slot

8. 4-in-1 Card

Reader (M550N

Only)

M540N 4

335 6

Figure 5

Rear View

1. External Monitor

Port

2. S-Video-Out Port

3. Security Lock Slot

4. Battery

1234

Introduction

External Locator - Bottom View 1 - 9

1.Introduction

External Locator - Bottom View

Figure 6

Bottom View

1. Vent/Fan Intake

2. Battery

3. Module Bay Cover

4. Hard Disk Cover

5. Speakers

(M550N Only)



Overheating

To prevent your com-

puter from overheating

make sure nothing

blocks the vent/fan in-

takes while the com-

puter is in use.

M550N

M540N

Introduction

1 - 10 M550N Mainboard Overview - Top (Key Parts)

1.Introduction

M550N Mainboard Overview - Top (Key Parts)

Figure 7

Mainboard Top

Key Parts

1. GS5019P

2. Clock Generator

3. ExpressCard

Assembly

4. H8/2111

5. Keyboard Cable

Connector

6. Hot-Key Board

Cable Connector 2

Introduction

M550N Mainboard Overview - Bottom (Key Parts) 1 - 11

1.Introduction

M550N Mainboard Overview - Bottom (Key Parts) Figure 8

Mainboard Bottom

Key Parts

1. CPU Socket (no

CPU installed)

2. Northbridge-Intel

945GM

3. Realtek

RTL8110SBL

4. ALC880 Audio

Codec

5. Audio Amp.

6. PCI7402

7. Southbridge-Intel

ICH7-M

8. Flash BIOS ROM

9. Memory Slots

DDRII So-DIMM

10. Mini PCIe Socket

11. Bluetooth

Connector

Introduction

1 - 12 M550N Mainboard Overview - Top (Connectors)

1.Introduction

M550N Mainboard Overview - Top (Connectors)

Figure 9

Mainboard Top

Connectors

1. USB Port

2. S/PDIF-Out Jack

3. Line-In Jack

4. Mini-IEEE 1394

Port

Introduction

M550N Mainboard Overview - Bottom (Connectors) 1 - 13

1.Introduction

M550N Mainboard Overview - Bottom (Connectors) Figure 10

Mainboard Bottom

Connectors

1. LCD Cable

Connector

2. D/D Board Cable

Connector

3. Optical Device

Drive Connector

4. SATA HDD

Connector

5. Modem Module

Connector

6. Touch Pad Cable

Connector

7. Audio Board

Cable Connector

8. CMOS Bat. Cable

Connector

9. Speaker Cable

Connector

10. Microphone

Cable Connector

11. LED Board Cable

Connector

12. 4-in-1 Card

Reader Socket

13. Mini-IEEE 1394

Port

14. RJ-45 LAN

Connector

15. Fan Cable

Connector

Introduction

1 - 14 M540N Mainboard Overview - Top (Key Parts)

1.Introduction

M540N Mainboard Overview - Top (Key Parts)

Figure 11

Mainboard Top

Key Parts

1. GS5019P

2. Clock Generator

3. ExpressCard

Assembly

4. 4-in-1 Card

Reader Socket

5. H8/2111

6. Keyboard Cable

Connector

7. Hot-Key Board

Cable Connector

Introduction

M540N Mainboard Overview - Bottom (Key Parts) 1 - 15

1.Introduction

M540N Mainboard Overview - Bottom (Key Parts)

Figure 12

Mainboard Bottom

Key Parts

1. CPU Socket (no

CPU installed)

2. Northbridge-Intel

945GM

3. Realtek

RTL8110SBL

4. ALC880 Audio

Codec

5. Audio Amp.

6. PCI7402

7. Southbridge-Intel

ICH7-M

8. Flash BIOS ROM

9. Memory Slots

DDRII So-DIMM

10. Mini PCIe Socket

11. Bluetooth Cable

Connector

Introduction

1 - 16 M540N Mainboard Overview - Top (Connectors)

1.Introduction

M540N Mainboard Overview - Top (Connectors)

Figure 13

Mainboard Top

Connectors

1. USB Port

2. S/PDIF-Out Jack

3. Line-In Jack

4. Mini-IEEE 1394

Port

Introduction

M540N Mainboard Overview - Bottom (Connectors) 1 - 17

1.Introduction

M540N Mainboard Overview - Bottom (Connectors) Figure 14

Mainboard Bottom

Connectors

1. LCD Cable

Connector

2. D/D Board Cable

Connector

3. Optical Device

Drive Connector

4. SATA HDD

Connector

5. Modem Module

Connector

6. Audio Board

Cable Connector

7. CMOS Bat. Cable

Connector

8. Microphone

Cable Connector

9. Mini-IEEE 1394

Port

10. RJ-45 LAN

Connector

11. Fan Cable

Connector

Introduction

1-18

1.Introduction

Disassembly

Overview 2 - 1

2.Disassembly

Chapter 2: Disassembly

Overview

This chapter provides step-by-step instructions for disassembling the M540/M545N/M550/M555N series notebook’s

parts and subsystems. When it comes to reassembly, reverse the procedures (unless otherwise indicated).

We suggest you completely review any procedure before you take the computer apart.

Procedures such as upgrading/replacing the RAM, CD device and hard disk are included in the User’s Manual but are

repeated here for your convenience.

To make the disassembly process easier each section may have a box in the page margin. Information contained under

the figure # will give a synopsis of the sequence of procedures involved in the disassembly procedure. A box with a 

lists the relevant parts you will have after the disassembly process is complete. Note: The parts listed will be for the dis-

assembly procedure listed ONLY, and not any previous disassembly step(s) required. Refer to the part list for the previ-

ous disassembly procedure. The amount of screws you should be left with will be listed here also.

A box with a  will also provide any possible helpful information. A box with a  contains warnings.

An example of these types of boxes are shown in the sidebar.



Information



Warning

Disassembly

2 - 2 Overview

2.Disassembly

NOTE: All disassembly procedures assume that the system is turned OFF, and disconnected from any power supply (the

battery is removed too).

Maintenance Tools

The following tools are recommended when working on the notebook PC:

• M3 Philips-head screwdriver

• M2.5 Philips-head screwdriver (magnetized)

• M2 Philips-head screwdriver

• Small flat-head screwdriver

• Pair of needle-nose pliers

• Anti-static wrist-strap

Connections

Connections within the computer are one of four types:

Locking collar sockets for ribbon connectors To release these connectors, use a small flat-head screwdriver to

gently pry the locking collar away from its base. When replac-

ing the connection, make sure the connector is oriented in the

same way. The pin1 side is usually not indicated.

Pressure sockets for multi-wire connectors To release this connector type, grasp it at its head and gently

rock it from side to side as you pull it out. Do not pull on the

wires themselves. When replacing the connection, do not try to

force it. The socket only fits one way.

Pressure sockets for ribbon connectors To release these connectors, use a small pair of needle-nose pli-

ers to gently lift the connector away from its socket. When re-

placing the connection, make sure the connector is oriented in

the same way. The pin1 side is usually not indicated.

Board-to-board or multi-pin sockets To separate the boards, gently rock them from side to side as

you pull them apart. If the connection is very tight, use a small

flat-head screwdriver - use just enough force to start.

Disassembly

Overview 2 - 3

2.Disassembly

Maintenance Precautions

The following precautions are a reminder. To avoid personal injury or damage to the computer while performing a re-

moval and/or replacement job, take the following precautions:

1. Don't drop it. Perform your repairs and/or upgrades on a stable surface. If the computer falls, the case and other

components could be damaged.

2. Don't overheat it. Note the proximity of any heating elements. Keep the computer out of direct sunlight.

3. Avoid interference. Note the proximity of any high capacity transformers, electric motors, and other strong mag-

netic fields. These can hinder proper performance and damage components and/or data. You should also monitor

the position of magnetized tools (i.e. screwdrivers).

4. Keep it dry. This is an electrical appliance. If water or any other liquid gets into it, the computer could be badly

damaged.

5. Be careful with power. Avoid accidental shocks, discharges or explosions.

•Before removing or servicing any part from the computer, turn the computer off and detach any power supplies.

•When you want to unplug the power cord or any cable/wire, be sure to disconnect it by the plug head. Do not pull on the wire.

6. Peripherals – Turn off and detach any peripherals.

7. Beware of static discharge. ICs, such as the CPU and main support chips, are vulnerable to static electricity.

Before handling any part in the computer, discharge any static electricity inside the computer. When handling a

printed circuit board, do not use gloves or other materials which allow static electricity buildup. We suggest that

you use an anti-static wrist strap instead.

8. Beware of corrosion. As you perform your job, avoid touching any connector leads. Even the cleanest hands pro-

duce oils which can attract corrosive elements.

9. Keep your work environment clean. Tobacco smoke, dust or other air-born particulate matter is often attracted

to charged surfaces, reducing performance.

10. Keep track of the components. When removing or replacing any part, be careful not to leave small parts, such as

screws, loose inside the computer.

Cleaning

Do not apply cleaner directly to the computer, use a soft clean cloth.

Do not use volatile (petroleum distillates) or abrasive cleaners on any part of the computer.



Power Safety

Warning

Before you undertake

any upgrade proce-

dures, make sure that

you have turned off the

power, and discon-

nected all peripherals

and cables (including

telephone lines). It is

advisable to also re-

move your battery in

order to prevent acci-

dentally turning the

machine on.

Disassembly

2 - 4 Overview

2.Disassembly

Disassembly Steps

The following table lists the disassembly steps, and on which page to find the related information. PLEASE PERFORM

THE DISASSEMBLY STEPS IN THE ORDER INDICATED.

To remove the Battery: