Clevo M540J, M545J, M550J, M555J Service Manual

Preface

I

Preface

Notebook Computer
M540J/M545J/M550J/M555J

Service Manual

Preface

II

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 ven­dor. 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 publica­tion, 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
February 2006

Trademarks

AMD Turion™ and AMD Sempron™ are trademarks of Advanced Micro Devices, Inc.
Windows® is a registered trademark of Microsoft Corporation.

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

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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 M540J/
M545J/M550J/M555J 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

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IV

Preface

IMPORTANT SAFETY INSTRUCTIONS

Follow basic safety precautions, including those listed below, to reduce the risk of fire, electric shock and injury to per­sons 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 elec­trical 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.

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

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V

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 mois­ture may affect the system.

Don’t use or store the com­puter 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 com­puter by yourself.

Perform routine maintenance
on your computer.

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VI

Preface

4. Avoid interference. Keep the computer away from high capacity transformers, electric motors, and other strong mag­netic 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 proce­dures, make sure that
you have turned off the
power, and discon­nected all peripherals
and cables (including
telephone lines). It is
advisable to also re­move your battery in
order to prevent acci­dentally turning the
machine on.

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

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

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IX

Preface

Contents

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

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

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

External Locator - Top View with LCD Panel Open ...................... 1-5

External Locator - Front & Right side Views .................................1-6

External Locator - Left Side & Rear View .....................................1-7

External Locator - Bottom View .....................................................1-8

M540J Mainboard Overview - Top (Key Parts) .............................1-9

M540J Mainboard Overview - Bottom (Key Parts) ...................... 1-10

M540J Mainboard Overview - Top (Connectors) ......................... 1-11

M540J Mainboard Overview - Bottom (Connectors) ...................1-12

M550J Mainboard Overview - Top (Key Parts) ...........................1-13

M550J Mainboard Overview - Bottom (Key Parts) ...................... 1-14

M550J Mainboard Overview - Top (Connectors) ......................... 1-15

M550J Mainboard Overview - Bottom (Connectors) ...................1-16

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

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

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

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

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

Disassembly Steps ........................................................................... 2-4

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

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

Removing the System Memory (RAM) .......................................... 2-8

Removing the Optical (CD/DVD) Device ....................................2-10

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

Removing the Keyboard ................................................................2-13

Removing the Wireless LAN Module ........................................... 2-14

Removing the Modem and Bluetooth Modules ............................2-15

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

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

Top (M550J) .................................................................................. A-3

Top (M555J) .................................................................................. A-4

Bottom (M550J/M555J) ................................................................ A-5

LCD (M550J) ................................................................................. A-6

LCD (M555J) ................................................................................. A-7

DVD-RW Drive (M550J) .............................................................. A-8

Top (M540J) .................................................................................. A-9

Top (M545J) ................................................................................ A-10

Bottom (M540J/M545J) .............................................................. A-11

LCD (M540J) ............................................................................... A-12

LCD (M545J) ............................................................................... A-13

Combo Drive (M540J) ................................................................ A-14

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

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

ATHLON 64 1/4 .............................................................................B-3

ATHLON 64 2/4 .............................................................................B-4

ATHLON 64 3/4 .............................................................................B-5

ATHLON 64 4/4 .............................................................................B-6

DDR SO-DIMM .............................................................................B-7

DDR TERMINATION ...................................................................B-8

PANEL, INVERTER, FAN ............................................................B-9

C15 HT CPU .................................................................................B-10

C51 HT MCP ................................................................................B-11

C51 PCI EXPRESS ......................................................................B-12

C51 DAC / IFP .............................................................................B-13

C51 PWR / GND - DECOUPLING .............................................B-14

MCP51 HT ....................................................................................B-15

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X

Preface

MCP51 PCI ..................................................................................B-16

MCP51 SATA / IDE .................................................................... B-17

MCP51 AUDIO / USB / MISC .................................................... B-18

MCP51 RGMII ............................................................................. B-19

MCP51 PWR / GND .................................................................... B-20

MINI PCI, USB2.0*2 ................................................................... B-21

SIO, SATA HDD, CD-ROM ....................................................... B-22

LAN RTL8201CL ........................................................................ B-23

FWH, TOUCHPAD, LED ........................................................... B-24

IEEE 1394 VT6307S .................................................................... B-25

H8/2111 ........................................................................................ B-26

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

AZALIA CODEC ALC880 ......................................................... B-28

AUDIO AMP, USB2.0* 2 ............................................................ B-29

PCMCIA ENE CB714B ............................................................... B-30

PCM SOCKET, 3-IN-1 SOCKET ............................................... B-31

SYSYEM POWER, BRIDGE BATT .......................................... B-32

+2.6V, +1.3V, +1.2V ................................................................... B-33

+VCORE ...................................................................................... B-34

+1.2VS_ADJ, +1.0V_ADJ ........................................................... B-35

+VDD3, +VDD5, +VDD12 ......................................................... B-36

D/D BD (RGB & TV OUT MUXES) .......................................... B-37

D/D BD (CRT, S-VIDEO, RJ-11) ............................................... B-38

D/D BD (CHARGER, DC IN) ..................................................... B-39

AUDIO BD (PHONE JACK, USB) ............................................. B-40

HOT KEY BD (HOT KEY, LED) ............................................... B-41

LED BOARD ............................................................................... B-42

CLICK BOARD ........................................................................... B-43

RJ-45 BOARD ............................................................................. B-44

USB DONGLE BOARD .............................................................. B-45

Introduction

Overview 1 - 1

1.Introduction

Chapter 1: Introduction

Overview

This manual covers the information you need to service or upgrade the M540J/M545J/M550J/M555J 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 M540J/M545J/M550J/M555J 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 infor­mation 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 Mobile AMD Turion™ 64 Processor (35W),

754-pin Micro-PGA Package, 64bit
Models ML-30/ ML-34/ ML-37/ ML-40/ ML-44

(µ0.09) 0.09 Micron Silicon-On-Insulator (SOI) Process
Technology, 1MB L2 Cache

1.6GHz/ 1.8GHz/ 2.0GHz/ 2.2GHz/ 2.4GHz

Mobile AMD Turion™ 64 Processor (35W),
754-pin Micro-PGA Package, 64bit
Models ML-28/ ML-32/ ML-42

(

µ0.09) 0.09 Micron Silicon-On-Insulator (SOI) Process

Technology, 512KB L2 Cache

1.6GHz/ 1.8GHz/ 2.4GHz

Mobile AMD Turion™ 64 Processor (25W),
754-pin Micro-PGA Package, 64bit
Models MT-30/ MT-34/ MT-37/ MT-40/ MT-44

(µ0.09) 0.09 Micron Silicon-On-Insulator (SOI) Process
Technology, 1MB L2 Cache

1.6GHz/ 1.8GHz/ 2.0GHz/ 2.2GHz/ 2.4GHz

Mobile AMD Turion™ 64 Processor (25W),
754-pin Micro-PGA Package, 64bit
Models MT-28/ MT-32/ MT-42

(

µ0.09) 0.09 Micron Silicon-On-Insulator (SOI) Process

Technology, 512KB L2 Cache

1.6GHz/ 1.8GHz/ 2.4GHz

Mobile AMD Sempron™ Processor (25W),
754-pin Micro-PGA Package, 32bit
Models 2800+/ 3100+

(

µ0.13) 0.13 Micron Silicon-On-Insulator (SOI) Process

Technology, 256KB L2 Cache

1.6GHz/ 1.8GHz

Mobile AMD Sempron™ Processor (25W),
754-pin Micro-PGA Package, 32bit
Models 2600+/ 3000+/ 3300+

(µ0.09) 0.09 Micron Silicon-On-Insulator (SOI) Process
Technology, 128KB L2 Cache

1.6GHz/ 1.8GHz/ 2.0GHz

Core Logic nVIDIA C51MV + MCP51M

Memory 64-bit Wide DDR Data Channel

Two 200 Pin SO-DIMM Sockets Supporting DDR 333 / 400 MHz
Memory Expandable up to 2GB (256/ 512/ 1024 MB DDR 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

Introduction

System Specifications 1 - 3

1.Introduction

LCD M550J:

15.0" XGA (1024*768) Flat Panel TFT
OR

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

M540J:

14.0" WXGA (1280*768) Flat Panel TFT

Video Adapter nVIDIA C51MV Integrated Graphics Adapter

Shared Memory Architecture of up to 128MB of Video Memory
Supports Analog Monitor Pixel Resolution up to 2048 * 1536 at 75Hz
Integrated High Quality 3D Graphics Engine Accelerator
Supports Microsoft DirectX 9.0 Vertex Shader 3.0

Storage One Changeable 12.7mm(h) Optical Device (CD/DVD) Type Drive

(see “Optional” on page 1 - 4 for drive options)
Easy Changeable 2.5" 9.5 mm (h) HDD with SATA (Serial) Interface

Audio Integrated AZALIA Compliant Interface (HDA)

3D Stereo Enhanced Sound System
Sound-Blaster PRO™ Compatible
2 * Built-In Speakers
Built-In Microphone

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

Keyboard &
Pointing Device

Winkey Keyboard Built-In TouchPad with Scrolling Function

PCMCIA One Type-II PCMCIA CardBus PC Card Slot

Interface Three USB 2.0 Ports

One External Monitor Port
One Headphone-Out Jack
One Microphone-In Jack
One Line-In Jack
One Serial Port

One S/PDIF Output Jack (5.1CH)
One RJ-11 Jack for Plug & Play Fax/Modem
One RJ-45 Jack for 10Mb/ 100Mb/ 1000Mb Fast Ethernet
One DC-in Jack

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

Feature Specification

Introduction

1 - 4 System Specifications

1.Introduction

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

10Mb/ 100Mb/ Fast Ethernet

802.11g Mini-PCI Wireless LAN Module
(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 Standby

Supports Battery Low Suspend
Supports Resume from Modem Ring
Supports Wake on LAN

Power Full Range AC/DC Adapter 20V, 5.25A (65 Watts), 100~240V, 47~63Hz

6 Cell Smart Lithium-Ion Battery Pack, 4000mAH (44.4W)
6 Cell Smart Lithium-Ion Battery Pack, 4400mAH (48.8W)

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

M550J:

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

2.4 kg Without Battery

M540J:

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

Battery Charger Box

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)

(Factory Option) PC Camera with USB Interface

(Factory Option) Bluetooth V2.0 Module

(Factory Option) 802.11g Mini-PCI Wireless LAN Module

Feature Specification

Introduction

External Locator - Top View with LCD Panel Open 1 - 5

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. Speakers

5. LED Power &
Communication
Indicators

6. Power Button

7. Keyboard

8. Built-In
Microphone

9. TouchPad and
Buttons

10. AP-Key Buttons

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3

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5

6

9

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3

5

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6

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3

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10

M550J M540J

4

Introduction

1 - 6 External Locator - Front & Right side Views

1.Introduction

External Locator - Front & Right side Views

Figure 2

Front Views

1. LED Power &
Communication
Indicators

2. LCD Latch
(M550J Only)

3. 4-in-1 Card
Reader (M540J
Only)

Figure 3

Right Side Views

1. Headphone-Out
Jack

2. Microphone-In
Jack

3. USB 2.0 Port

4. RJ-11 Modem
Jack

5. Optical Device
Drive Bay

6. DC-In Jack

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2

M550J

1

3

M540J

1 4

5

6

32

Introduction

External Locator - Left Side & Rear View 1 - 7

1.Introduction

External Locator - Left Side & Rear View

4

1 2

3 3 5

6

7

M550J

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. PC Card Slot

7. 4-in-1 Card
Reader (M550J
Only)

1

1

4

2

3 3 5

6

M540J

Figure 5

Rear View

1. External Monitor
Port

2. Serial Port

3. Security Lock Slot

4. Battery

4

1

2

3

Introduction

1 - 8 External Locator - Bottom View

1.Introduction

External Locator - Bottom View

Figure 6

Bottom View

1. Vent/Fan Intake

2. Battery

3. Memory (RAM)/
WLAN Module/
CPU Cover

4. Hard Disk Cover

5. Speakers
(M550J Only)



Overheating

To prevent your com­puter from overheating
make sure nothing
blocks the vent/fan in­takes while the com­puter is in use.

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4

3

1

5

5

2

4

3

1

M550J

M540J

1

1

Introduction

M540J Mainboard Overview - Top (Key Parts) 1 - 9

1.Introduction

M540J Mainboard Overview - Top (Key Parts)

Figure 7

Mainboard Top

Key Parts

1. PC Card
Assembly

2. H8/2111

3. RS-232
Transceivers

4. PC87381
Super I/O

1

2

3

4

Introduction

1 - 10 M540J Mainboard Overview - Bottom (Key Parts)

1.Introduction

M540J Mainboard Overview - Bottom (Key Parts)

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2

3

4

5

6

8

7

9

10

Figure 8

Mainboard Bottom

Key Parts

1. CPU Socket (no
CPU installed)

2. Northbridge­C51MV

3. Flash BIOS ROM

4. Mini-PCI
(Wireless Lan
Module)
Connector

5. Memory Slots
DDR2 So-DIMM

6. Southbridge­MCP51M

7. ENE PCMCIA &
Card Card
Control

8. RTL820KL
10/100M Fast
Ethernet
Phyceiver

9. ALC880 Audio
Codec

10. Audio Amp.

Introduction

M540J Mainboard Overview - Top (Connectors) 1 - 11

1.Introduction

M540J Mainboard Overview - Top (Connectors)

Figure 9

Mainboard Top

Connectors

1. PCMCIA Socket

2. Keyboard

3. Hot-key board
Connector

4. USB Port

5. S/PDIF-Out Jack

6. Line-In Jack

1

2

3

4

6

5

Introduction

1 - 12 M540J Mainboard Overview - Bottom (Connectors)

1.Introduction

M540J Mainboard Overview - Bottom (Connectors)

Figure 10

Mainboard Bottom

Connectors

1. D/D Board
Connector

2. LCD Connector

3. Speaker
Connector

4. Audio Board
Connector

5. BT Connector

6. Modem Module
Connector

7. TouchPad
Connector

8. CMOS Bat.
Connector

9. Microphone
Cable Connector

10. LED Board
Connector

11. Card Reader
Socket

12. LAN Board
Connector

13. Fan CPU Cable
Connector

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5

9

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Introduction

M550J Mainboard Overview - Top (Key Parts) 1 - 13

1.Introduction

M550J Mainboard Overview - Top (Key Parts)

Figure 11

Mainboard Top

Key Parts

1. PC Card
Assembly

2. H8/2111

3. RS-232
Transceivers

4. PC87381
Super I/O

1

2

3

4

Introduction

1 - 14 M550J Mainboard Overview - Bottom (Key Parts)

1.Introduction

M550J Mainboard Overview - Bottom (Key Parts)

Figure 12

Mainboard Bottom

Key Parts

1. CPU Socket (no
CPU installed)

2. Northbridge­C51MV

3. Mini-PCI
(Wireless Lan
Module)
Connector

4. Flash BIOS ROM

5. Memory Slots
DDR2 So-DIMM

6. Southbridge­MCP51M

7. ENE PCMCIA &
Card Card
Control

8. RTL8201CL
10/100M Fast
Ethernet
Phyceiver

9. ALC880 Audio
Codec

10. Audio Amp.

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2

3

4

5

6

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9

10

8

Introduction

M550J Mainboard Overview - Top (Connectors) 1 - 15

1.Introduction

M550J Mainboard Overview - Top (Connectors)

Figure 13

Mainboard Top

Connectors

1. PCMCIA Socket

2. Keyboard

3. Hot-key board
Connector

4. USB Port

5. S/PDIF-Out Jack

6. Line-In Jack

7. TouchPad
Connector

8. Card Reader
Socket

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8

4

6

1

2

3

5

Introduction

1 - 16 M550J Mainboard Overview - Bottom (Connectors)

1.Introduction

M550J Mainboard Overview - Bottom (Connectors)

Figure 14

Mainboard Bottom

Connectors

1. D/D Board
Connector

2. LCD Connector

3. Speaker Cable
Connector

4. Audio Board
Connector

5. BT Connector

6. Modem Module
Connector

7. Microphone
Cable Connector

8. CMOS Bat.
Connector

9. LAN Board
Connector

10. Fan CPU Cable
Connector

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Disassembly

Overview 2 - 1

2.Disassembly

Chapter 2: Disassembly

Overview

This chapter provides step-by-step instructions for disassembling the M540J/M545J/M550J/M555J 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 dis­assembly procedure listed ONLY, and not any previous disassembly step(s) required. Refer to the part list for the previ­ous 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 replac­ing 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 re­placing 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.