Clevo l295t Service Manual
LCD Computer
L295T 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
November 2005
Trademarks
Intel® and Pentium® 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 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
System Specifications .....................................................................1-2
External Locator - Front View ........................................................1-5
External Location - Left & Right Side Views .................................1-6
External Locator - Rear View .........................................................1-7
Mainboard Overview - Top .............................................................1-8
Key Parts ........................................................................................1-8
Mainboard Overview - Bottom .......................................................1-9
Key Parts .........................................................................................1-9
Mainboard Overview - Top ...........................................................1-10
Cable Connectors and Switches ....................................................1-10
Mainboard Overview - Bottom .....................................................1-11
Cable Connectors and Switches ....................................................1-11
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 Optical Device Assembly ......................................2-14
Part Lists ..................................................A-1
Part List Illustration Location ........................................................ A-2
L295T - Base ................................................................................. A-3
L295T - Bracket ............................................................................. A-4
L295T - Front ................................................................................ A-5
L295T - Toshiba DVD-RW ........................................................... A-6
L295T - FDD ................................................................................. A-7
L295T - HDD ................................................................................ A-8
Schematic Diagrams.................................B-1
System Block Diagram ...................................................................B-2
CPU Prescott - 1 of 2 ......................................................................B-3
CPU Prescott - 2 of 2 ......................................................................B-4
Clock Generator ..............................................................................B-5
MCH Power ....................................................................................B-6
MCH Host .......................................................................................B-7
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 RTL8100CL/8110SL ...........................................................B-21
Preface
V
Preface
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
Power 4 ......................................................................................... B-30
Preface
VI
1: Introduction
Overview
This manual covers the information you need to service or upgrade the L295T 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 L295T 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
Table 1 - 1
System
Specifications
1.Introduction
System Specifications
Latest Specification Information
The specifications listed in this Appendix are correct at the time of going to pre ss. Certain items (particularly p rocessor types/speeds
and CD/DVD device types) may be changed or updated due to the manufacturer's release schedule. Check with your service center for
details.
Feature Specification
Processor Types Intel® Pentium® 4 630/ 640/ 650 Processor with HT
Technology
LGA775 Package (775-pin)
Intel® Pentium® 4 520/ 530/ 540/ 550 Processor with HT
Technology
LGA775 Package (775-pin)
(90nm) 90 Nanometer Process Technology, 2MB On-Die
L2 Cache & 800MHz Front Side Bus - 3.0/ 3.2/ 3.4 GHz
(90nm) 90 Nanometer Process Technology, 1MB On-Die
L2 Cache & 800MHz Front Side Bus - 2.8/ 3.0/ 3.2/ 3.4
GHz
Core Logic Intel 865GV + ICH5
LCD Options 15.0" XGA Flat Panel TFT (1024*768)
Security Security (Kensington® Type) Lock Slot BIOS Password
1 - 2 System Specifications
Intel® Pentium® 4 520J/ 530J/ 540J/ 550J Processor with
HT Technology
LGA775 Package (775-pin)
Intel® Celeron® D 325J/ 330J/ 335J/ 340J/ 345J/
Processor
LGA775 Package (775-pin)
(90nm) 90 Nanometer Process Technology, 1MB On-Die
L2 Cache & 800MHz Front Side Bus - 2.8/ 3.0/ 3.2/ 3.4
GHz
(90nm) 90 Nanometer Process Technology, 256K On-Die
L2 Cache & 533MHz Front Side Bus - 2.53/ 2.66/ 2.8/
2.93/ 3.06 GHz
Feature Specification
Introduction
Memory Dual Channel
Two 200-Pin SODIMM Sockets, Supporting DDR 333 /
DDR 400 MHz Modules Only
(Note: Do Not Use Other Module Types)
Video Controller 865GV Integrated Chipset
Supports 3D Hardware Motion Compensation
BIOS 4MB Flash ROM Phoenix BIOS
Storage One Fixed 3.5", 25.4mm Height Hard Disk Drive Supporting Both IDE and SATA Interfaces
One 3.5", 1.44MB 3-Mode Floppy Disk Drive (Exchangeable With 6-in-1 Card Reader Module or Video-Capture
Module)
One changeable 12.7mm(h) Optical Device (CD/DVD) Type Drive (see “Optional” on page C - 4 for drive options)
Audio AC’97 2.2 Compliant
Sound Blaster™ Compatible
Windows Sound System™ Compatible
Interface One Serial Port
One Parallel Port
One External Monitor Port
Two PS/2 Ports (Keyboard & Mouse)
One Headphone-Out Jack
One Microphone-In Jack
One Line-In Jack
Four USB 2.0 Ports
One RJ-45 Jack for LAN
One RJ-11 Jack for Modem
Memory Expandable up to 2GB (256/ 512/ 1024 MB DDR
Modules)
Shared Memory Architecture (Supports up to 64MB of
Dynamically Allocated Shared Memory as Video Memory)
2 * Built-In 2W Main Stereo Speakers
One Headphone-Out Jack
One Microphone-In Jack
One Line-In Jack
1.Introduction
One IEEE 1394 Port (Un-Powered) Enabled by Mini-PCI /IF IEEE 1394 Module (optional)
PC Card Sockets Supports Two Type II Slots or One Type III PCMCIA Slot (Cardbus Support)
System Specifications 1 - 3
Introduction
Feature Specification
1.Introduction
Communication 1000Mb Base-T Gigabit LAN Built-In (10/100Mb Base-T
Compliant)
Interchangeable V.90 (V.92 Compliant) / 56K MDC
Modem
OR
56K MDC Modem (V.92 Compliant) & Bluetooth Combo
Module (Factory Option)
Power
Management
Power Internal Switching Power Supply
Environmental
Spec
Physical
Characteristics
Optional Optical Drive Module Options:
Supports ACPI v1.0b
Supports Hibernate Mode
Full Range -160W
Temperature
Operating: 5°C ~ 35°C
Non-Operating: -20°C ~ 60°C
369mm (H) * 384mm (W) * 188mm (D)
Fan Bearing: Two Ball Bearings
CD-ROM Drive Module
Combo Drive Module
DVD-ROM Drive Module
DVD-Dual Drive Module
Options Below Exchangeable with Floppy Disk Drive
Module:
6-in-1 Card Reader Module - For MD/ CF/ SM/ MS/ SD/
MMC Formats (Factory Option)
802.11 b/ g Wireless LAN Module with Mini-PCI Interface
(Optional)
OR
IEEE 1394 Module with Mini-PCI Interface (Optional)
Power Button as Sleep/Resume Key
Supports Standby Mode
Relative Humidity
Operating: 20% ~ 80%
Non-Operating: 10% ~ 90%
8.9Kg
Tilt (0-15 deg), Swivel (270 deg)
MDC Modem
OR
MDC & Bluetooth Modem Combo Module (Factory
Option)
802.11 b/ g Wireless LAN Module with Mini-PCI Interface
(Optional)
OR
IEEE 1394 Module with Mini-PCI Interface (Optional)
1 - 4 System Specifications
Video Capture Card Module Supporting S-Video-In and
AV Terminal (Factory Option)
Introduction
External Locator - Front View
1
2
3
4
Figure 1 - 1
Front View
1. LCD Panel
2. Speakers
3. LED Activity
indicators
4. Power Button
1.Introduction
43
2
External Locator - Front View 1 - 5
Introduction
Figure 1 - 2
Left & Right Views
1. Floppy Disk
Drive*
2. Hard Disk Drive
(HDD) Bay
3. CD Device
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
1.Introduction
Slot
External Location - Left & Right Side Views
Left
1
4
3
5
Right
4
5
6
7
*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 .
1
2
1 - 6 External Location - Left & Right Side Views
8
9
10
Introduction
External Locator - Rear View
13
13
13
Figure 1 - 3
Rear View
1. Carrying Handle
1
13
13
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. PS/2 Mouse &
Keyboard Ports
10. Printer/Parallel
Port
11. Serial Port
12. External Monitor
(CRT) Port
13. Vents
1.Introduction
4 5
2 3 87
6
9
10
11 12
External Locator - Rear View 1 - 7
Introduction
Figure 1 - 4
Mainboard Over-
view - 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. Cardbus
PCI1520
1.Introduction
Mainboard Overview - Top
Key Parts
2
3
4
1
7
1 - 8 Mainboard Overview - Top
6
5
Introduction
Mainboard Overview - Bottom
Key Parts
1
2
3
Figure 1 - 5
Mainboard Over-
view - 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
1.Introduction
4
5
Mainboard Overview - Bottom 1 - 9
Introduction
Figure 1 - 6
Mainboard Top
Cable Connectors &
Switches
1. Floppy Disk Drive
(CN5)
2. TV Port or Touch
Screen (Bluetooth
use)
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)
1.Introduction
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)
Mainboard Overview - Top
Cable Connectors and Switches
5
6
4
9
15
2
3
1
1 - 10 Mainboard Overview - Top
11
10
7
8
12
16
13
14
Introduction
Mainboard Overview - Bottom
Cable Connectors and Switches
1
Figure 1 - 7
Mainboard Bottom
Cable Connectors &
Switches
1. CN35 (LCD
Connector)
1.Introduction
Mainboard Overview - Bottom 1 - 11
Introduction
1.Introduction
1-12
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.
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