EUROCOM L295U Series, L297U Series Service Manual

L295U / L297U

Preface

LCD Computer L295U/L297U Series 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 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 September 2004

Trademarks

Intel®, Pentium® and Celeron® are US 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 computer.

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

Related Documents

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

User’s Manual on CD This describes the computer’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 computer.

Preface

Contents

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

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

Model Differences ........................................................................... 1-2

System Specifications L295U/L297U .............................................1-3

External Locator - Front View ........................................................1-6

External Location - Left & Right Side Views .................................1-7

External Locator - Rear View .........................................................1-8

Mainboard Overview - Top .............................................................1-9

Key Parts .........................................................................................1-9

Mainboard Overview - Bottom .....................................................1-10

Key Parts .......................................................................................1-10

Mainboard Overview - Top ...........................................................1-11

Cable Connectors and Switches ....................................................1-11

Mainboard Overview - Bottom .....................................................1-12

Cable Connectors and Switches ....................................................1-12

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

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

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

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

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

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

Removing the Hard Disk Drive Assembly ......................................2-5

Removing the LCD Back Cover .....................................................2-6

Removing the System Memory .......................................................2-7

Removing the CPU ..........................................................................2-8

Removing the I/O Bracket .............................................................2-10

Removing the Modem ...................................................................2-11

Removing the Floppy Disk Drive Assembly ................................2-12

Removing the Mini PCI I/F Module .............................................2-13

Removing the CD Device Assembly (L295U Series) .................. 2-14

Removing the CD Device Assembly (L297U Series) .................. 2-15

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

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

L295U - Base ................................................................................. A-3

L295U - Back ................................................................................ A-4

L295U - Front ................................................................................ A-5

L295U - Card Reader Module ....................................................... A-6

L295U - Combo ............................................................................. A-7

L295U - Toshiba DVD .................................................................. A-8

L295U - FDD ................................................................................. A-9

L295U - HDD .............................................................................. A-10

L297U - Base ............................................................................... A-11

L297U - Back .............................................................................. A-12

L297U - Front .............................................................................. A-13

L297U - Card Reader Module ..................................................... A-14

L297U - CD-ROM ....................................................................... A-15

L297U - Combo ........................................................................... A-16

L297U - Toshiba DVD-RW ........................................................ A-17

L297U - FDD ............................................................................... A-18

L297U - HDD .............................................................................. A-19

L297U - Video Capture Card Module ......................................... A-20

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

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

Northwood - 1 of 2 .........................................................................B-3

Northwood - 2 of 2 .........................................................................B-4

Clock Generator ..............................................................................B-5

MCH Power ....................................................................................B-6

MCH Host .......................................................................................B-7

Preface

MCH AGP ...................................................................................... B-8

MCH Memory ................................................................................B-9

MCH Memory Termination ......................................................... B-10

DDR RIMM ................................................................................. B-11

DVO Chrontel CH7107A ............................................................. B-12

LCD Connector ............................................................................ B-13

CRT & USB ................................................................................. B-14

ICH5 (Power, LPC, Clock, SMbus) .............................................B-15

ICH5 (PCI, IDE, UHB, USB, LAN) ............................................B-16

Thermal & Fan Controller ............................................................ B-17

Cardbus PCI1520 ......................................................................... B-18

IEEE 1394 .................................................................................... B-19

Cardbus Slot & Mini PCI .............................................................B-20

LAN RTL8100BL ........................................................................B-21

IDE Connector & Firmware Hub .................................................B-22

SIO W83627HF ............................................................................B-23

Serial & Parallel Port ....................................................................B-24

CODEC ........................................................................................ B-25

Amplifiers & Inverter Connector .................................................B-26

Power 1 ......................................................................................... B-27

Power 2 ......................................................................................... B-28

Power 3 ......................................................................................... B-29

Introduction

Overview 1 - 1

1.Introduction

1: Introduction

Overview

This manual covers the information you need to service or upgrade the L295U/L297U LCD 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 L295U/L297U LCD computer 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 Model Differences

1.Introduction

Model Differences

The differences between the model types are indicated in the table and pictures below.

Feature/Model L295U Series L297U Series

LCD Size Color TFT 15" XGA LCD Panel (supporting a resolution

of 1024*768 256K colors)

Color TFT 17" SXGA LCD Panel (supporting a

resolution of 1280*1024 16 million colors)

CD Device Location Left Side Front Dimensions 369mm (H) * 384mm (W) * 188mm (D 395mm (H) * 418mm (W) * 179mm (D) Weight 8.9 Kg 10.2 Kg Designs Supported

(Additional Colors Also supported)

Table 1 - 1

Model

Specifications

Introduction

System Specifications L295U/L297U 1 - 3

1.Introduction

System Specifications L295U/L297U

Feature Specification - L295U Specification - L297U

Processor Types Intel Pentium® 4 with HT Technology (520/ 530/ 540) FC-PGA2 Package (478-pin)

(90nm) - 90 Nanometer Process Technology, 1MB L2 Cache & 800MHz Front Side Bus

2.8/ 3.0/ 3.2/ GHz

Intel Pentium® 4 with HT Technol og y FC-PGA2 Package (478-pin)

(130nm) - 130 Nanometer Process Technology, 512KB L2 Cache & 800MHz Front Side Bus

2.8/ 3.0/ 3.2 GHz

Intel Pentium® 4 FC-PGA2 Package (478-pin)

(130nm) - 130 Nanometer Process Technology, 512KB L2 Cache & 533MHz Front Side Bus

2.8 GHz

Intel Celeron® D (325/ 330/ 335/ 340/ 345/ 350) FC-PGA2 Package (478-pin)

(90nm) - 90 Nanometer Process Technology, 256KB L2 Cache & 533MHz Front Side Bus

2.53/ 2.66/ 2.80/ 2.93/ 3.06/ 3.2 GHz

Intel Celeron® FC-PGA2 Package (478-pin)

(130nm) - 130 Nanometer Process Technology, 128KB L2 Cache & 400MHz Front Side Bus

2.4/ 2.5/ 2.6/ 2.7/ 2.8 GHz Core Logic Intel Chipset 865-GV Memory Two DIMM Sockets Supporting DDR 333/ 400 MHz

Expandable Memory up to 2GB (128M/256M/512M/1GB DDR DIMM modules)

BIOS 4MB Flash ROM Phoenix BIOS

Supports ACPI

Intel OSB Support

LCD Color TFT 15" XGA LCD Panel (supporting a resolution of

1024*768 256K colors)

Color TFT 17" SXGA LCD Panel (supporting a resolution

of 1280*1024 16 million colors)

Table 1 - 2

L295U/L297U

System

Specifications

Introduction

1 - 4 System Specifications L295U/L297U

1.Introduction

Video 865-GV Integrated Chipset

Video RAM - Shared Memory Architecture (SMA)

Supporting DDR Video Shared Memory up to 64MB

2D Hardware Accelerator (for block level transfers of data integrating an extensive set of instructions for 3D)

Audio AC97’ Compatible

SoundBlaster

™ and Windows Sound System™ Compatible

Two Built-In Speakers (3W)

Three Audio Jacks for Headphone-Out, Line-In, and Microphone-In

Interface One Serial Port (16550A Compatible, 9 Pin Shell, up to 115Kbps)

One Parallel Port (25pin Shell, SPP/Bi-Direction/ECP/EPP Mode Support)

One External Monitor (VGA) Port (15-pin D-sub)

Two PS/2 Ports (Keyboard & Mouse)

Three Audio Jacks For Headphone-out, Line-in, and Microphone-in

Four USB 2.0 Ports

One RJ-45 Jack for 100M/10M Ethernet LAN

One RJ-11 Port for Modem (optional)

One Mini-PCI /IF IEEE 1394 Module (optional) - Enables IEEE 1394 Port (6 Pin Un-Powered)

I/O Chip Winbond W83627HF PC Card Sockets Supports Two Type II Slots or One Type III PCMCIA Slot (Cardbus Support)

Feature Specification - L295U Specification - L297U



Video Memory

The system allocates or “shares” a portion of system memory for video use. See “Dynamic Video Memory Technology” on page 3 - 2 for information on the system allocated video memory, and “Share Memory (Main Menu)” on page 5 - 8 for information on user configurable options.

Introduction

System Specifications L295U/L297U 1 - 5

1.Introduction

Storage One 3.5", 1.44MB 3-Mode Floppy Disk Drive (Exchangeable With 6-in-1 Card Reader Module or Video-Capture

Module)

One 3.5", 25.4mm Height Hard Disk Drive (Ultra-66/100 I/F Support)

One Optical Device Bay for the Optional 12.7mm Height ATAPI CD-ROM, or CD-RW, or DVD-ROM, or DVD-ROM &

CD-RW Combo, or DVD/RW+R

Modem Removable Internal 56k MDC Data/Fax Modem (optional) LAN On Board 10/100Mbps Base Auto-Detection Power Internal Switching Power Supply

Full Range - AC in 90~264V, 160W

Power Management

Supports ACPI

Supports Hibernate Mode

Supports Standby Mode

Indicators LED Indicators (HDD/FDD/CD Device activity, Power) Physical

Dimensions

369mm (H) * 384mm (W) * 188mm (D) 395mm (H) * 418mm (W) * 179mm (D)

Weight 8.9Kg 10.2Kg

Feature Specification - L295U Specification - L297U

Introduction

1 - 6 External Locator - Front View

1.Introduction

External Locator - Front View

L295U Series

L297U Series

L295UT

Figure 1 - 1

Front View

1. LCD Panel

2. Speakers

3. LED Activity indicators

4. Power Button

5. CD Device (L297U Only)

Introduction

External Location - Left & Right Side Views 1 - 7

1.Introduction

External Location - Left & Right Side Views



*Floppy Disk Drive &

Optional Modules

If you have either the 6-in-1 Card Reader, or Video Capture Card options, then

the optional module will replace the floppy disk drive module in the slot at point .

Figure 1 - 2

Left & Right Views

1. Floppy Disk Drive*

2. Hard Disk Drive (HDD) Bay

3. CD Device (L295U Only)

4. LCD Brightness Control Knob

5. Volume Control Knob

6. Dual PC Card Slots

7. PC Card Eject Buttons

8. Dual USB Ports

9. AC Power-In Port

10. Security Lock Slot

Left

Right

L295U Series L297U Series

1 1

Introduction

1 - 8 External Locator - Rear View

1.Introduction

External Locator - Rear View

Figure 1 - 3

Rear View

1. Carrying Handle

2. Headphone-Out Jack

3. Line-In Jack

4. Microphone-In Jack

5. RJ-45 LAN Jack

6. RJ-11 Phone Jack

7. Dual USB Ports

8. Unpowered IEEE 1394 Port

9. Blocked - IEEE 1394 Port (no

option installed)

10. PS/2 Mouse & Keyboard Ports

11. Printer/Parallel Port

12. Serial Port

13. External Monitor (CRT) Port

14. Vents

4 5

2 3

12 13

Introduction

Mainboard Overview - Top 1 - 9

1.Introduction

Mainboard Overview - Top

Key Parts

Figure 1 - 4

Mainboard

Overview - Top

Key Parts

1. CPU Socket (no CPU Installed)

2. Intel SpringdaleG (North Bridge)

3. RAM Sockets

4. Mini PCI Socket for WLAN or IEEE1394

5. FLASH BIOS

6. CMOS Battery

7. Realtek RTL8100BL

8. Cardbus PCI1520

9. CMOS Jumper Switch

Introduction

1 - 10 Mainboard Overview - Bottom

1.Introduction

Mainboard Overview - Bottom

Key Parts

Figure 1 - 5

Mainboard

Overview - Bottom

Key Parts

1. Chrontel CH7017A

2. Clock Generator

3. Intel ICH-5 460 mBGA (South Bridge)

4. SUPER I/O Winbond W83627HF

5. AC’97 MDC Module

Introduction

Mainboard Overview - Top 1 - 11

1.Introduction

Mainboard Overview - Top

Cable Connectors and Switches

Figure 1 - 6

Mainboard Top

Cable Connectors &

Switches

1. Floppy Disk Drive (CN5)

2. Card Reader(CN4)

3. CD/DVD Device (CN7)

4. Fan Power (CN9)

5. Inverter (CN1)

6. Modem Module

7. Speaker (CN31)

8. Modem Cable (CN33)

9. PC CARD (CN13)

10. Touch Screen (CN16)

11. IEEE1394 (CN36)

12. USB 2.0 (CN17)

13. LED Board (CN30)

14. Speaker (CN32)

15. Power (CN12)

16. Hard Disk (CN34)

10 11

13 14

Introduction

1 - 12 Mainboard Overview - Bottom

1.Introduction

Mainboard Overview - Bottom

Cable Connectors and Switches

Figure 1 - 7

Mainboard Bottom

Cable Connectors &

Switches

1. CN35 (LCD Connector)

Disassembly

Overview 2 - 1

2.Disassembly

2: Disassembly

Overview

This chapter provides step-by-step instructions for disassembling 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 provide any possible helpful information. A box with a  contains warnings.

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



Information and

Component Parts



Warning

Disassembly

2 - 2 Overview

2.Disassembly

NOTE: All disassembly procedures assume that the system is turned OFF, and disconnected from any power supply, and that all peripheral cables are disconnected (including telephone lines and network cables).

Maintenance Tools

The following tools are recommended when working on the computer:

• 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 pliers 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.

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 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 sho uld a lso mon itor 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 p art, be careful not to le ave small part s, 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 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.

Disassembly

2 - 4 Disassembly Steps

2.Disassembly

Disassembly Steps

The following 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 hard disk drive assembly:

1. Remove the hard disk drive assembly page 2 - 5

To remove the LCD back cover: