Clevo m575a schematic
Notebook Computer
M570A/M575A
Service Manual
Preface
Preface
I
Preface
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
October 2005
Trademarks
Intel®, Pentium® and Celeron® are 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.
II
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 M570A/
M575A 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.
Preface
Appendix A, Part Lists
Appendix B, Schematic Diagrams
Preface
III
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, 6.0A minimum AC/DC Adapter,
CAUTION
Preface
IV
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
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.
Preface
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.
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.
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.
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 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.
Preface
V
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.
Preface
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.
Use only approved brands of
peripherals.
Unplug the power cord before
attaching 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.
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.
VI
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.
Preface
Preface
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.
VII
Preface
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.
VIII
Contents
Preface
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 (Audio "DJ")& Rear Views .................... 1-7
External Locator - Left Side & Right Side View ............................1-8
External Locator - Bottom View ..................................................... 1-9
M570A/M575A Mainboard Overview - Top (Key Parts) ............1-10
M570A/M575A Mainboard Overview - Bottom (Key Parts) ....... 1-11
M570A/M575A Mainboard Overview - Top (Connectors) .......... 1-12
M570A/M575A Mainboard Overview - Bottom (Connectors) ....1-13
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) ..........................................2-7
Removing the Wireless LAN Module ............................................. 2-8
Removing the Bluetooth Module ....................................................2-9
Removing the TV Tuner Card. ...................................................... 2-10
Removing the Optical (CD/DVD) Device ....................................2-11
Removing the Processor ................................................................2-12
Removing the VGA Card .............................................................. 2-14
Removing the Keyboard ................................................................2-15
Part Lists ..................................................A-1
Part List Illustration Location ........................................................ A-2
Top (M570A/M575A) ................................................................... A-3
Bottom (M570A/M575A) .............................................................. A-4
LCD (M570A/M575A) .................................................................. A-5
Combo Drive (M570A/M575A) .................................................... A-6
DVD Drive (M570A/M575A) ....................................................... A-7
DVD-RW Drive (M570A/M575A) ............................................... A-8
HDD (M570A/M575A) ................................................................. A-9
Second-HDD (M570A/M575A) .................................................. A-10
Schematic Diagrams................................. B-1
System Block Diagram ...................................................................B-2
CLOCK GENERATOR ..................................................................B-3
CPU-1 .............................................................................................B-4
CPU-2 .............................................................................................B-5
Alviso-1 ..........................................................................................B-6
Alviso-2 ..........................................................................................B-7
Alviso-3 ..........................................................................................B-8
DIMM A .........................................................................................B-9
DIMM B .......................................................................................B-10
VGA CARD CONNECTOR ........................................................B-11
ICH6M-1 .......................................................................................B-12
ICH6M-2 .......................................................................................B-13
ICH6M-3 .......................................................................................B-14
USB & CCD CONN .....................................................................B-15
CARD BUS & 1394-1 ..................................................................B-16
CARD BUS &1394-2 ...................................................................B-17
MINIPCI .......................................................................................B-18
REALTEK GIGA LAN ................................................................B-19
PCIE GIGA LAN .........................................................................B-20
AC97 .............................................................................................B-21
Preface
IX
Preface
AUDIO-DJ ................................................................................... B-22
Azalia Codec & AMP .................................................................. B-23
Pre Amp AP8202 ......................................................................... B-24
SIO FWH IR & CIR ..................................................................... B-25
H8 ................................................................................................. B-26
VCORE ........................................................................................ B-27
+1.05VS, +2.5VS ......................................................................... B-28
+1.8V, 0.9, +1.5V ......................................................................... B-29
+VDD3, +VDD5, +VDD12 ......................................................... B-30
CHARGER, DC IN ...................................................................... B-31
BUTTON BOARD ....................................................................... B-32
CARD READER BOARD ........................................................... B-33
USB BOARD M560A .................................................................. B-34
USB BOARD M570A .................................................................. B-35
COM PORT BOARD ................................................................... B-36
AUDIO DJ BOARD ..................................................................... B-37
Preface
CLICK BOARD ........................................................................... B-38
PATA HDD BOARD ................................................................... B-39
SATA HDD BOARD ................................................................... B-40
SECOND HDD BOARD ............................................................. B-41
X
1: Introduction
Overview
This manual covers the information you need to service or upgrade the M570A/M575A 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. Windows XP ) 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.
Introduction
The M570A/M575Aseries 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.
1.Introduction
Overview 1 - 1
Introduction
System Specifications
Feature Specification
1.Introduction
Processor Intel Pentium® M Processor
(478-pin) Micro-FC-PGA Package
Models 730/ 740/ 750/ 760/ 770/ 780
Core Logic Intel 915PM + ICH6-M
Memory Two 200 Pin SO-DIMM Sockets Supporting DDRII (DDR2) With Speeds Up To 533 MHz
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 17.0" WXGA (1440*900) Flat Panel TFT
OR
17.0" WSXGA+ (1680*1050) Flat Panel TFT
OR
17.0" WUXGA (1920*1200) Glare Type Flat Panel TFT
(µ0.09) 0.09 Micron Process Technology
2MB On-die L2 Cache & 533MHz FSB
1.6/ 1.73/ 1.86/ 2/ 2.13/ 2.26 GHz
1 - 2 System Specifications
Feature Specification
Introduction
Video Card
Options
Storage One Changeable 12.7mm(h) Optical Device (CD/DVD) Type Drive in Removable Bay
ATI Mobility Radeon X700 (M26) PCI Express Video Card
128MB DDR Video RAM On Board
256-bit Video Memory Interface
PCI Express * 16
Fully Supports DirectX® 9.0
ATI Mobility Radeon X800 XT (M28 PRO) PCI Express Video Card
256MB DDR-III (DDR3) Video RAM On Board
256-bit Video Memory Interface
PCI Express * 16
Fully Supports DirectX® 9
HDTV Output Support
NVIDIA GeForce Go 7800 GTX (G70M) PCI Express Video Card
256MB DDR-III (DDR3) Video RAM On Board
256 bit Memory Interface
PCI Express * 16
Fully Supports DirectX® 9.0C
HDTV Output Support
nd
One Removable Bay for 2
Easy Changeable 2.5" 9.5 mm (h) Hard Disk Drive Supporting ATA 100/ 66/ 33 or SATA 150
The System Supports both PATA (Parallel) and SATA (Serial) Interfaces
Battery or 2nd PATA Hard Disk Drive or Optical Disk Drive
1.Introduction
Audio 7.1 Channel High Definition Audio Chipset (AZALIA) with UAA (Universal Audio Architecture)
EAX™ 1.0 & 2.0 Compatible
Direct Sound 3D™ Compatible
A3D™ Compatible
16/ 20/ 24-bit S/PDIF-Out Supporting 44.1KHz/ 48KHz/ 96KHz Sample Rate
2 * Built-In Hi-Fi Speakers
Built-In Standalone Audio "DJ" CD Player (Supports MP3 Formats)
S/PDIF Digital Output (7.1CH)
SRS WOW Surround Sound (SRS/ TruSurround/ TruBass / Focus Enhancement)
System Specifications 1 - 3
Introduction
Feature Specification
1.Introduction
Interface &
Communication
Card Reader Built-In 4-in-1 Card Reader (MS/ MS PRO/ SD/ MMC)
Keyboard &
Pointing Device
PCMCIA One Type-II PCMCIA CardBus PC Card Slot
Four USB 2.0 Ports
One Mini-IEEE 1394 Port
One DVI-Out Port
One Microphone-In Jack
One Line-In Jack
One Headphone-Out Jack
One S/PDIF Output Jack
One Serial Port
One S-Video-Out Jack
300K Pixel PC VIdeo Camera Module with USB Interface
(Factory Option)
OR
1.3M Pixel PC VIdeo Camera Module with USB Interface
(Factory Option)
Bluetooth 1.2 Module with USB Interface (Optional)
Wireless Network Options
Intel PRO/Wireless 2915ABG (802.11a/b/g) (Optional)
Winkey Keyboard Built-In TouchPad with Scrolling Function
One RJ-11 Jack for Plug & Play Fax/Modem
AZALIA 56K Plug & Play Fax/Modem
V.90/92 Compliant
One RJ-45 Jack (Local Area Network)
10MB/100MB/1Gbit PCI-Express
Fast Ethernet On Board
One Infrared Transceiver IrDA 1.1 Compliant
(IrDA 1.1/ FIR/ SIR/ ASKIR)
Infrared Transfer 1cm ~ 30 cm Operating
Distance
115.2K bps SIR
4M bps FIR
One CATV-In Jack (Functions with Optional TV Tuner
Module)
One Consumer Infrared (CIR) Transceiver for TV Remote
(Functions with Optional TV Tuner Module)
Power
Management
Power Full Range AC/DC Adapter 20V,
Environmental
Spec
1 - 4 System Specifications
Supports ACPI 2.0 Supports Hibernate Mode
Supports Standby
6.0A (120 Watts), 100~240V, 47~63Hz
8 Cell Smart Lithium-Ion Battery Pack, 4.4AH (for ATI X700 + ATI X800 + NVIDIA 7800 GTX)
nd
Optional Battery - 6 Cell Smart Lithium-Ion Battery Pack, 3.8AH (for ATI X700 + ATI X800)
2
Temperature
Operating: 5
Non-Operating: -20°C ~ 60°C
°C ~ 35°C
Relative Humidity
Operating: 20% ~ 80%
Non-Operating: 10% ~ 90%
Feature Specification
Introduction
Physical
Dimensions &
Weight
Optional Optical Drive Module Options:
397mm (w) * 294mm (d) * 22 - 44mm (h)
3.7 kg With 8 Cell Battery & Optical Device
DVD/CD-RW Combo Drive Module
DVD-Dual Drive Module
8 Cell Smart Lithium-Ion Battery Pack, 4.4AH
300K Pixel PC VIdeo Camera Module with USB Interface
(Factory Option)
OR
1.3M Pixel PC VIdeo Camera Module with USB Interface
(Factory Option)
Wireless Network Options
Intel PRO/Wireless 2915ABG (802.11a/b/g) (Optional)
Model Differences
The models vary slightly in external cover design and color.
Bluetooth 1.2 Module with USB Interface
USB Floppy Disk Drive
nd
Battery - 6 Cell Smart Lithium-Ion Battery Pack,
2
3.8AH
nd
PATA Hard Disk Drive
2
Mini-PCI Hybrid TV Tuner Card
Mini-PCI MCE TV Tuner Card (Hardware Decoder)
1.Introduction
Figure 1
Model difference
M570A
M575A
System Specifications 1 - 5
Introduction
Figure 2
Top View
1. Optional Built-In PC
Camera
2. LCD
3. Ap-Key Buttons
4. Power Button
5. Keyboard
6. TouchPad and
Buttons
7. Audio "DJ" Controls
8. Built-In Microphone
9. Audio "DJ" LED
Display Panel
(Including LED
Indicators)
1.Introduction
External Locator - Top View with LCD Panel Open
1
2
4
3
5
Audio "DJ" &
Power Button
Make sure that the Audio "DJ" player is off
before pressing the
power button to turn
the computer on.
1 - 6 External Locator - Top View with LCD Panel Open
6
7
9
7
8
Introduction
External Locator - Front (Audio "DJ")& Rear Views
1 2 3 4 5 6 7 8 9
10
1
2
11
3
4
12
5
13
6
7 8
9
10
11
Figure 3
Front Views
1. Audio "DJ" Power
Button
2. Volume Down
3. Volume Up
4. Repeat
5. LED Display
6. Previous Track
7. Next Track
8. Play/Pause
9. Stop (Press Twice To
Eject The CD/DVD)
10. Repeat Mode
Indicator
11. Track Indicator
12. Time Indicator
13. Disc Indicator
Figure 4
Rear Views
1. Vent/Fan Intake/
Outlet
2. S/PDIF-Out Jack
3. Line-In Jack
4. 2 * USB 2.0 Ports
5. DVI-Out Port
6. TV-In Jack (Enabled
With TV Tuner Only)
7. RJ-11 Phone Jack
8. RJ-45 LAN Jack
9. S-Video-Out Jack
10. DC-In Jack
11. Serial Port
1.Introduction
External Locator - Front (Audio "DJ")& Rear Views 1 - 7
Introduction
Figure 5
Left Side View
1. Headphone-Out
Jack
2. Microphone-In Jack
3. 4-in-1 Card Reader
4. PC Card Slot
5. Mini-IEEE 1394a
Port
6. 2 * USB 2.0 Ports
7. Speaker
1.Introduction
Figure 6
Right Side View
1. Security Lock Slot
2. Speaker
3. Optional Device
Drive Bay
External Locator - Left Side & Right Side View
4
1
2
2
1
3
5
6
7
3
1 - 8 External Locator - Left Side & Right Side View
External Locator - Bottom View
1
4
Introduction
Figure 7
Bottom View
1. Vent/Fan Intake/
Outlet
2. Battery
3. Optical Device
Release Latches
2
1
3
4. Component bay
Cover
5. Infrared &
Consumer
Infrared
Transceiver
1.Introduction
Overheating
5
External Locator - Bottom View 1 - 9
To prevent your computer from overheating
make sure nothing
blocks the vent/fan intakes while the computer is in use.
Introduction
Figure 8
Mainboard Top
Key Parts
1. CPU Socket (no
CPU installed)
2. VGA Sockets
3. Northbridge-Intel
915PM
4. Memory Slots
DDR2 So-DIMM
5. Mini-PCI Socket
(Wireless Lan
Module)
6. Audion Amp.
7. ASP WOW
8. Audio Codec
9. TV tuner Socket
1.Introduction
M570A/M575A Mainboard Overview - Top (Key Parts)
1
2
2
3
4
8
8
7
6
1 - 10 M570A/M575A Mainboard Overview - Top (Key Parts)
9
5
Introduction
M570A/M575A Mainboard Overview - Bottom (Key Parts)
8
3
4
2
Figure 9
Mainboard Bottom
Key Parts
1. PC Card
Assembly
2. Southbridge-Intel
ICH6-M
3. Bluebird VLT
4. H85/211
5. Ultra Media
6. Flash BIOS ROM
7. RTL8110
8. GS5019P
1.Introduction
7
5
6
1
M570A/M575A Mainboard Overview - Bottom (Key Parts) 1 - 11
Introduction
Figure 10
Mainboard Top
Connectors
1. S/PDIF-Out Jack
2. Line-In Jack
3. USB Port
4. DVI-Port
5. TV-In Jack
6. RJ-11 Jack
7. RJ-45 Jack
8. S-Video Jack
9. DC-In Jack
10. Battery
Connectors
11. CD Connector
12. HDD Connector
13. Bluetooth
1.Introduction
Connector
14. Headphone-Out
Jack
15. Microphone-In
Jack
16.
Mini-IEEE 1394a
Port
17. USB Ports
18. System Fan
Connector
19. LCD Connector
M570A/M575A Mainboard Overview - Top (Connectors)
10
7
8
11
17
16
15
18
1
13
3
2
12
4
5
6
19
9
10
14
1 - 12 M570A/M575A Mainboard Overview - Top (Connectors)
Introduction
M570A/M575A Mainboard Overview - Bottom (Connectors)
7
6
5
4
3
2
8
9
10
Figure 11
Mainboard Bottom
Connectors
1. CMOS Bat.
Connector
2. Keyboard
Connector
3. Speaker-1
Connector
4. Com Connector
5. Inventer Board
Connector
6. CCD Connector
7. Modem Module
Connector
8. LED Connector
9. ADJ Connector
10. Touch Pad
Connector
1.Introduction
1
M570A/M575A Mainboard Overview - Bottom (Connectors) 1 - 13
Introduction
1.Introduction
1 - 14 M570A/M575A Mainboard Overview - Bottom (Connectors)
2: Disassembly
Overview
This chapter provides step-by-step instructions for disassembling the M570A/M575A 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.
Disassembly
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.
2.Disassembly
Information
Warning
Overview 2 - 1
Disassembly
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.
2 - 2 Overview
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.
Maintenance Precautions
The following precautions are a reminder. To avoid personal injury or damage to the computer while performing a removal 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 produce 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.
Disassembly
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.
2.Disassembly
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.
Overview 2 - 3
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