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Toshiba Personal Computer
Satellite P20-25 Series
Maintenance Manual
TOSHIBA CORPORATION
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Copyright © 2003 by Toshiba Corporation. All rights reserved. Under the copyright laws, this manual cannot be reproduced in any form without the prior written permission of Toshiba. No patent liability is assumed with respect to the use of the information contained herein. Toshiba Personal Computer Satellite P20-25 Series Maintenance Manual First edition June 2003 Disclaimer The information presented in this manual has been reviewed and validated for accuracy. The incl
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Preface This maintenance manual describes how to perform hardware service maintenance for the Toshiba Personal Computer Satellite P20 Series, referred to as the P20-25 Series in this manual. The procedures described in this manual are intended to help service technicians isolate faulty Field Replaceable Units (FRUs) and replace them in the field. SAFETY PRECAUTIONS Four types of messages are used in this manual to bring important information to your attention. Each of these messages
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The manual is divided into the following parts: Chapter 1 Hardware Overview describes the P20-25 Series system unit and each FRU. Chapter 2 Troubleshooting Procedures explains how to diagnose and resolve FRU problems. Chapter 3 Test and Diagnostics describes how to perform test and diagnostic operations for maintenance service. Chapter 4 Replacement Procedures describes the removal and replacement of the FRUs. Appendices The appendices describe the following: Handling the LCD mod
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Conventions This manual uses the following formats to describe, identify, and highlight terms and operating procedures. Acronyms On the first appearance and whenever necessary for clarification acronyms are enclosed in parentheses following their definition. For example: Read Only Memory (ROM) Keys Keys are used in the text to describe many operations. The key top symbol as it appears on the keyboard is printed in boldface type. Key operation Some operations require you to simulta
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vi Satellite P20-25 Series Maintenance Manual
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Table of Contents Chapter 1 Hardware Overview 1.1 Features......................................................................................................................1-1 1.2 System Unit................................................................................................................1-5 1.3 2.5-inch Hard Disk Drive...........................................................................................1-9 1.4 Removable Drives......................................
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Chapter 3 Tests and Diagnostics 3.1 The Diagnostic Test ................................................................................................... 3-1 3.2 Executing the Diagnostic Test ................................................................................... 3-2 3.3 Config Check Test ..................................................................................................... 3-6 3.4 DMI Check Test..................................................................
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Chapter 4 Replacement Procedures 4.1 General.......................................................................................................................... 1 4.2 Battery........................................................................................................................... 7 4.3 PC Card......................................................................................................................... 9 4.4 Removable modules...............................
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Appendices Appendix A Handling the LCD Module ........................................................................... A-1 Appendix B Board Layout ................................................................................................ B-1 Appendix C Pin Assignments............................................................................................ C-1 Appendix D Keyboard Scan/Character Codes .................................................................. D-1 Appendi
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Chapter 1 Hardware Overview
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1 Hardware Overview 1-ii Satellite P20-25 Series Maintenance Manual
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1 Hardware Overview Chapter 1 Contents 1.1 Features......................................................................................................................... 1 1.2 System Unit................................................................................................................... 5 1.3 2.5-inch Hard Disk Drive.............................................................................................. 8 1.4 Removable Drives......................................
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1 Hardware Overview 1-iv Satellite P20-25 Series Maintenance Manual
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1.1 Features 1 Hardware Overview 1.1 Features The Satellite P20-25 Series Personal Computer uses extensive Large Scale Integration (LSI), and Complementary Metal-Oxide Semiconductor (CMOS) technology extensively to provide compact size, minimum weight and high reliability. This computer incorporates the following features and benefits: CPU Intel Desktop P4 up to 2.4GHZ or Northwood upgradable Chipset • Intel DT Springdale (865 PE) • Intel 82801 EB I/O Controller HUB5(ICH5) • PC8
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1 Hardware Overview 1.1 Features HDD • One 2.5", 9.5mm hard disk with capacity 30GB/40GB/60GB/80GB • Bus Master IDE • 9.5mm, 2.5”HDD support • Support Ultra 100 synchronous DMA FDD / DVD Devices One of the following: • 12.7mm, 1.44MB FDD device • 5.25” 12.7mm height DVD-R/RW device • 5.25” 12.7mm height DVD-ROM device • 5.25” 12.7mm height DVD multi-drivedevice • 5.25” 12.7mm height combo device Keyboard An easy-to-use 87-key keyboard provides a numeric keypad overlay for fast
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1.1 Features 1 Hardware Overview I/O Ports • One 25-pin parallel port, EPP/ECP capability • One 15-pin CRT port, supports DDC 2B • One TV-out connector • One MIC-in port • One line-in port • One headphone-out • One 2-pin AC adapter jack • One type III or two type II PCMCIA card bus slots • Four 4-pin USB ports • One RJ11/RJ45 port • VR for volume control • IEEE1396 (i.Link / FireWire) port • CIR port Universal Serial Bus (USB) The computer comes with four USB ports that comp
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1 Hardware Overview 1.1 Features Sound system A Cirrus logic ALC202 for AC97 codec audio subsystem offers industry leading mixed signal technology to enhance the computer’s multimedia capability. The sound system is equipped with stereo speakers and jacks for headphone and external microphone. TV-out port This video-out mini-jack enables transfer of NTSC or PAL data (video and right/left audio) to external devices such as a TV. LAN port The computer comes with an RJ-45 Local Area
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1.2 System Unit 1 Hardware Overview 1.2 System Unit The system unit is composed of the following major components: Processor • Intel Desktop P4 up to 2.4GHZ or Northwood upgradable – mPGA478 package CPU – FSB533 Northwood CPU 2.53G/2.66G/2.8G w/o HT – FSB533 Northwood CPU 3.06G w/HT – FSB800 Northwood CPU 2.4G/2.6G/2.8G/3.0G/3.2G w/HT System Logic • Intel chipset MCH Springdale PE • Integrated DRAM controller • Accelerated Graphics Port (AGP) Interface • Hub Interface to Intel
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1 Hardware Overview 1.2 System Unit Memory • System DRAM • Two JEDEC standard 200-pins SO-DIMM memory support +2.5V 64/128/256MB/512MB. • System & KB Combine ROM BIOS • 512KB Flash ROM Video Subsystem • nVIDIA NV34M Graphics Controller) • Microsoft-DX9 & OpenGL-2.0 (with NVIDIA extensions) Graphics APIs hardware support • 50 million triangles per second setup engine • 1000 million pixels per second fill rate • 256-bit 3D and 2D graphics accelerator, with full 32/64/128-bit color
