Clevo L285P User manual

Preface
I
Preface
LCD Computer
L285P
Service Manual

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II
Preface
Notice
The company reserves the right to revise this publication or to change its contents without notice. Information contained
herein is for reference only and does not constitute a commitment on the part of the manufacturer or any subsequent ven-
dor. 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 publica-
tion, 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 2002
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.

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

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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.

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V
Preface
Contents
Introduction ........................................................... 1-1
Overview ............................................................................................................. 1-1
System Specifications ......................................................................................... 1-2
Processor ............................................................................................................. 1-2
Core Logic Chip .................................................................................................. 1-2
BIOS .................................................................................................................... 1-2
System Memory .................................................................................................. 1-2
Video ................................................................................................................... 1-3
LCD ..................................................................................................................... 1-3
Audio ................................................................................................................... 1-3
Interface ............................................................................................................... 1-3
PC Card Sockets .................................................................................................. 1-3
Storage ................................................................................................................. 1-4
Modem ................................................................................................................. 1-4
LAN ..................................................................................................................... 1-4
Keyboard ............................................................................................................. 1-4
Power ................................................................................................................... 1-4
Power Management ............................................................................................. 1-4
Support for WFM Ver 2.0 ................................................................................... 1-4
Indicators ............................................................................................................. 1-4
Physical Dimensions ........................................................................................... 1-4
Weight ................................................................................................................. 1-5
Fan Bearing Type: ............................................................................................... 1-5
Security ................................................................................................................ 1-5
Optional ............................................................................................................... 1-5
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

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Preface
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
Disassembly ............................................................ 2-1
Overview ............................................................................................................. 2-1
Maintenance Tools .............................................................................................. 2-2
Connections ......................................................................................................... 2-2
Maintenance Precautions .................................................................................... 2-3
Cleaning ...............................................................................................................2-3
Disassembly Steps ............................................................................................... 2-4
Removing the Hard Disk Drive Assembly .......................................................... 2-6
Removing the System Memory ........................................................................... 2-7
Removing the CPU ............................................................................................. 2-9
Removing the I/O Bracket ................................................................................ 2-11
Removing the Modem ....................................................................................... 2-12
Removing the Floppy Disk Drive Assembly .................................................... 2-13
Removing the CD Device Drive Assembly ...................................................... 2-14
Removing the Inverter Board ............................................................................ 2-15
Removing the Mainboard .................................................................................. 2-16
Separating the Base Assembly from the LCD & Mainboard Assembly ........... 2-17
Removing the LCD ........................................................................................... 2-18
Removing the LED Board ................................................................................. 2-19
Removing the Speaker Units ............................................................................. 2-19
Removing the Base Assembly Cover ................................................................ 2-20
Removing the USB Board ................................................................................. 2-21
Removing the Power Supply Unit ..................................................................... 2-21
Part Lists ............................................................... A-1

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Preface
Part List Illustration Location .............................................................................A-2
Base-1 (L285P) ...................................................................................................A-3
Back (L285P) ......................................................................................................A-4
LCD Front (L285P) .............................................................................................A-5
Floppy Disk Drive (L285P) ................................................................................A-6
Hard Disk Drive (L285P) ....................................................................................A-7
MKE-TEAC CD-ROM Drive (L285P) ..............................................................A-8
SAMSUNG CD-ROM Drive (L285P) ................................................................A-9
SAMSUNG DVD-ROM Drive (L285P) ..........................................................A-10
TOSHIBA DVD-ROM Drive (L285P) .............................................................A-11
KME Combo Drive (L285P) ............................................................................A-12
SAMSUNG-TOSHIBA Combo Drive (L285P) ...............................................A-13
KME CD-RW Drive (L285P) ...........................................................................A-14
Schematic Diagrams ..............................................B-1
System Block Diagram .......................................................................................B-3
Northwood Power & Ground - 1 of 2 .................................................................B-4
Northwood Memory Interface - 2 of 2 ................................................................B-5
Clock Generator ..................................................................................................B-6
MCH845 Power & Ground - 1 of 4 ....................................................................B-7
MCH845 Host Interface - 2 of 4 .........................................................................B-8
MCH845 Memory Interface - 3 of 4 ...................................................................B-9
MCH845 AGP Interface - 4 of 4 .......................................................................B-10
DDR RIMM ......................................................................................................B-11
ATI Power .........................................................................................................B-12
ATI Host Interface ............................................................................................B-13
ATI Memory - 1 of 2 .........................................................................................B-14
ATI Memory - 2 of 2 .........................................................................................B-15
DDR VRAM - 1 of 2 .........................................................................................B-16
DDR VRAM - 2 of 2 .........................................................................................B-17
LCD Connector .................................................................................................B-18
CRT & USB ......................................................................................................B-19

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VIII
Preface
ICH2 (Power, LPC, Clock, SMbus) - 1 of 2 .....................................................B-20
ICH2 (PCI, IDE, Hub, USB, LAN) - 2 of 2 ......................................................B-21
CardBus (TI PCI1420) ......................................................................................B-22
CardBus Slot & Mini PCI .................................................................................B-23
LAN 8193C .......................................................................................................B-24
IDE Connector & Firmware HUB ....................................................................B-25
Super I/O W83627HF .......................................................................................B-26
Serial & Parallel Port, MDC .............................................................................B-27
AC'97 Codec .....................................................................................................B-28
Amplifier & Inverter Con. .................................................................................B-29
Power - 1 of 3 ....................................................................................................B-30
Power - 2 of 3 ....................................................................................................B-31
Power - 3 of 3 ....................................................................................................B-32
Indicator Board ..................................................................................................B-33
LCD Transfer Board - Hyundai ........................................................................B-34
LCD Transfer Board - Hyundai ........................................................................B-35
LCD Transfer Board - Sharp .............................................................................B-36
LCD Transfer Board - Sharp .............................................................................B-37
LCD Transfer Board - Chi Mei .........................................................................B-38
LCD Transfer Board - Chi Mei .........................................................................B-39
LCD Transfer Board - AU ................................................................................B-40
LCD Transfer Board - AU ................................................................................B-41
PCB Inverter Board - 1 of 2 .............................................................................B-42
PCB Inverter Board - 2 of 2 .............................................................................B-43
PCB Inverter Board ...........................................................................................B-44
Updating the FLASH ROM BIOS....................... C-1

Introduction
Overview 1 - 1
1.Introduction
1: Introduction
Overview
This manual covers the information you need to service or upgrade the L285P LCD computer. Information about oper-
ating 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 L285P 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 System Specifications
1.Introduction
System Specifications
Processor
• Intel Pentium®4 2.0/ 2.2/ 2.4/ 2.5 GHz (400 MHz front side bus)
• CPU Package - FC-PGA2 478 pin
• 512KB L2 cache (on die)
• Intel Pentium®4SFF 1.6/ 1.8/ 2.0/ 2.2/ 2.3 GHz (400MHz front side bus)
• CPU Package - FC-PGA2 478 pin
• 512KB L2 cache (on die)
• Intel Pentium®4 1.5/ 1.6/ 1.7/ 1.8 GHz (400 MHz front side bus)
• CPU Package - FC-PGA2 478 pin
• 256KB L2 cache (on die)
• Intel Celeron® 1.8 GHz (400 MHz front side bus)
• CPU Package - FC-PGA2 478 pin
• 128KB L2 cache (on die)
Core Logic Chip
• Intel 845
BIOS
• 2MB Flash ROM Phoenix BIOS
• Supports Plug and Play, ACPI 2.0
System Memory
• Two DIMM sockets supporting DDR 200/266 MHz
• Expandable memory up to 1GB (64/128/256/512 DDR DIMM modules)

Introduction
System Specifications 1 - 3
1.Introduction
Video
• ATI Mobility 7-P
• 32MB or 64MB of DDR video memory on board (factory option)
• Integrated 128-bit 2D/3D Graphics Accelerator
AGP 2.0 with 4x Architecture
Hardware Motion Compensation, IDCT for DVD Play
LCD
• Color TFT 15” XGA LCD Panel supporting a resolution of 1024*768/256K color depth
Audio
• AC97’ 2.2 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 CRT port (15-pin D-sub) compliant DC1.1
•TwoPS/2ports
• Four USB ports
• One RJ-45 jack for 100M/10M Ethernet LAN
• One RJ-11 port for Modem
• One IEEE 1394 port (Mini-PCI I/F for IEEE 1394 Module option)
PC Card Sockets
• Supports two Type II slots or one Type III PCMCIA slot (CardBus support)

Introduction
1 - 4 System Specifications
1.Introduction
Storage
• One 3.5”, 1.44MB 3-mode Floppy Disk Drive
• One 3.5”, 25.4mm height Hard Disk Drive (Ultra-66/100 I/F Support)
• One bay for the optional 12.7mm height 24X speed ATAPI CD-ROM, or 8X CD-RW, or 8X DVD-ROM, or 8X DVD-ROM &
CD-RW Combo.
Modem
• Removable Internal 56K Data/Fax modem
LAN
• On board 10/100Mbps base auto-detection
Keyboard
• Multimedia/Internet instant keyboard
Power
• Internal switching power supply
• Full range AC adapter - AC in 90~264V, 160W
Power Management
• ACPI Support: S1, S3, S4, S5
Support for WFM Ver 2.0
• SMBIOS 2.2, DMI, ACPI, WOL, WOR
Indicators
• LED indicators (HDD/FDD/CD Device activity, Power)
Physical Dimensions
• 384mm (H) * 369 mm (W) * 188mm (D)

Introduction
System Specifications 1 - 5
1.Introduction
Weight
•8.8Kg
Fan Bearing Type:
• Two ball bearings
Security
• BIOS password
• Kensington Lock
Optional
• MiniPCI I/F (Type IIIb) for IEEE 1394 Module
•MDCModule

Introduction
1 - 6 External Locator - Front View
1.Introduction
External Locator - Front View
567
1
2
4
2
3
Figure 1 - 1
Front View
1. LCD
2. Speakers
3. FDD Activity
LED
4. CD Device
Activity LED
5. HDD Activity
LED
6. Power LED
7. Power Button

Introduction
External Location - Left & Right Side Views 1 - 7
1.Introduction
External Location - Left & Right Side Views Figure 1 - 2
Left & Right Views
1. Floppy Disk
Drive
2. CD Device
3. Hard Disk Drive
(HDD) Bay
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
10. Kensington Lock
Slot
3
1
2
8
7
6
5
9
10
Left
4
Right

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. PS/2 Mouse
Port
10. PS/2 Keyboard
Port
11. Printer/Parallel
Port
12. Serial Port
13. External Moni-
tor (CRT) Port
14. Vents
1
4
5610
14
2 3
987
14
14
11 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. Northbridge Intel
Brookdale MCH
845
3. CMOS Battery
4. Firmware Hub
5. PCMCIA
6. CardBus Control-
ler
7. 2 * DIMM Sockets
2
4
5
6
3
7
1

Introduction
1 - 10 Mainboard Overview - Bottom
1.Introduction
Mainboard Overview - Bottom
Key Parts
Figure 1 - 5
Mainboard
Overview - Bottom
Key Parts
1. On-Board Video
Memory
2. VGA - ATI Mobil-
ity M7-P (Video
Controller)
3. Clock Generator
4. Southbridge Intel
ICH-2 360 EBGA
5. W83627HF-AW
Super I/O Con-
troller
6. V-Core PWM IC
Controller
7. Audio Amplifier
8. ALC201 - AC’97
Audio Codec
2
4
5
6
3
7
8
1
1

Introduction
Mainboard Overview - Top 1 - 11
1.Introduction
Mainboard Overview - Top
Cable Connectors and Switches
Figure 1 - 6
Mainboard Top
Cable Connectors &
Switches
1. CN1 (Inverter
Board)
2. CN5 (Wireless
Lan/IEEE1394
Module)
3. CN7 (Modem
Module)
4. CN11 (PCMCIA
Module)
5. CN13 (IEEE1394
Cable)
6. CN31 (Speaker
Cable)
7. CN30 (Modem
Cable)
8. CN28 (External
USB Cable)
9. CN27 (LED Board)
10.CN29 (Speaker
Cable)
11. C N4 ( FDD Cable)
12.CN6 (CDROM
Connector)
13.CN17 (CPU Fan
Cable)
2
4
67
3
12
9
1
11
10
13
5
8