Clevo L295U, L297U service manual
L295U / L297U
LCD Computer
L295U/L297U Series
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
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.
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 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
Preface
III
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
IV
Contents
Preface
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
V
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
Preface
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
VI
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.Introduction
Overview 1 - 1
Introduction
Model Differences
The differences between the model types are indicated in the table and pictures below.
1.Introduction
Table 1 - 1
Model
Specifications
Feature/Model L295U Series L297U Series
LCD Size Color TFT 15" XGA LCD Panel (supporting a resolution
of 1024*768 256K 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)
Color TFT 17" SXGA LCD Panel (supporting a
resolution of 1280*1024 16 million colors)
1 - 2 Model Differences
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 Technology 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
Introduction
Table 1 - 2
L295U/L297U
System
Specifications
1.Introduction
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)
System Specifications L295U/L297U 1 - 3
Introduction
Feature Specification - L295U Specification - L297U
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)
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.
Audio AC97’ Compatible
SoundBlaster
Three Audio Jacks for Headphone-Out, Line-In, and Microphone-In
™ and Windows Sound System™ Compatible
Two Built-In Speakers (3W)
1.Introduction
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)
1 - 4 System Specifications L295U/L297U
Feature Specification - L295U Specification - L297U
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
Indicators LED Indicators (HDD/FDD/CD Device activity, Power)
Supports ACPI
Supports Hibernate Mode
Supports Standby Mode
Introduction
1.Introduction
Physical
Dimensions
Weight 8.9Kg 10.2Kg
369mm (H) * 384mm (W) * 188mm (D) 395mm (H) * 418mm (W) * 179mm (D)
System Specifications L295U/L297U 1 - 5
Introduction
1.Introduction
Figure 1 - 1
Front View
1. LCD Panel
2. Speakers
3. LED Activity
indicators
4. Power Button
5. CD Device
(L297U Only)
External Locator - Front View
1
2
4
3
L295UT
L295U Series
43
2
L297U Series
1 - 6 External Locator - Front View
43
5
Introduction
External Location - Left & Right Side Views
Left
L295U Series L297U Series
1 1
3
Figure 1 - 2
Left & Right Views
Right
4
5
4
5
6
7
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
1.Introduction
*Floppy Disk Drive &
Optional Modules
If you have either the
2
2
8
9
10
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 .
1
External Location - Left & Right Side Views 1 - 7
Introduction
1.Introduction
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
External Locator - Rear View
14
14
1
14
14
14
1 - 8 External Locator - Rear View
2 3
4 5
6
87
9
10
11
12 13
Introduction
Mainboard Overview - Top
Key Parts
3
4
Figure 1 - 4
Mainboard
Overview - Top
Key Parts
1. CPU Socket (no
CPU Installed)
2. Intel Springdale-
2
1
G (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
1.Introduction
8
9
7
6
5
Mainboard Overview - Top 1 - 9
Introduction
1.Introduction
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
Mainboard Overview - Bottom
Key Parts
1
2
3
1 - 10 Mainboard Overview - Bottom
4
5
Introduction
Mainboard Overview - Top
Cable Connectors and Switches
5
6
9
15
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)
2
3
4
1
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)
1.Introduction
10 11
12
7
8
16
13 14
Mainboard Overview - Top 1 - 11
Introduction
1.Introduction
Figure 1 - 7
Mainboard Bottom
Cable Connectors &
Switches
1. CN35 (LCD
Connector)
Mainboard Overview - Bottom
Cable Connectors and Switches
1
1 - 12 Mainboard Overview - Bottom
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.
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 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 and
Component Parts
Warning
Overview 2 - 1
Disassembly
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.
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 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.
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 pu ll on the wir e.
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 part s, 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
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.
2.Disassembly
To remove the hard disk drive assembly:
1. Remove the hard disk drive assembly page 2 - 5
To remove the LCD back cover:
1. Remove the LCD back cover page 2 - 6
To remove the system memory:
1. Remove the LCD back cover page 2 - 6
2. Remove the system memory page 2 - 7
To remove the CPU:
1. Remove the LCD back cover page 2 - 6
2. Remove the CPU page 2 - 8
To remove the I/O Bracket:
1. Remove the LCD back cover page 2 - 6
2. Remove the I/O bracket page 2 - 10
To remove the modem:
1. Remove the LCD back cover page 2 - 6
2. Remove the I/O bracket page 2 - 10
3. Remove the modem page 2 - 11
To remove the floppy disk drive assembly:
1. Remove the LCD back cover page 2 - 6
2. Remove the floppy disk drive assembly page 2 - 12
To remove the Mini PCI I/F module:
1. Remove the LCD back cover page 2 - 6
2. Remove the Mini PCI I/F module page 2 - 13
To remove the L295U series CD/DVD Device:
1. Remove the LCD back cover page 2 - 6
2. Remove the CD/DVD device page 2 - 14
To remove the L297U series CD/DVD Device:
1. Remove the LCD back cover page 2 - 6
2. Remove the CD/DVD device page 2 - 15
2 - 4 Disassembly Steps
Disassembly
Removing the Hard Disk Drive Assembly
1. Turn OFF the computer and turn it around so that you may comfortably access the left side.
2. Remove screw from the HDD Bay .
3. Carefully pull the HDD assembly out from the bay and disconnect the IDE cable , and power cable .
4. Turn the assembly over and remove screws ( - ) holding the assembly to the bay cover .
5. Remove screws - and separate the hard disk and case .
6. Insert the new hard disk, and reverse the removal procedures to install the new hard disk.
a. b.
1 2
10 15
2
1
d.
9
5 8
16 17
e.
17
10
3 4
9
c.
3
4
11
12
Figure 2 - 1
Hard Disk Removal
Sequence
a. Remove the screw
from the HDD Bay.
b. Slide the HDD assem-
bly in the direction of
the arrow.
c. Disconnect the IDE
and power cables.
d. Remove the screws
from the assembly.
e. Remove the screws
and separate the HDD
from the case.
2.Disassembly
5
6
9. HDD Bay Cover
16
7
8
13
14
15
Removing the Hard Disk Drive Assembly 2 - 5
16.HDD
17.HDD case
•11 Screws
Disassembly
Figure 2 - 2
LCD Back Cover
Removal
Sequence
a. Remove the screws
from the LCD back
cover.
b. Lift the cover out and
set it aside.
2.Disassembly
Removing the LCD Back Cover
1. Turn OFF the computer and place it with its LCD display facing down on a clean, dry, level surface.
2. Remove screws - from the LCD back cover and slide it up towards the top of the computer.
3. Carefully remove the LCD back cover from the main unit and set it aside.
a.
1 2 3 4
11
10
9
1 11
8
12
b.
5
6
7
12
12.LCD back cover
•11 Screws
2 - 6 Removing the LCD Back Cover
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