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Toshiba Qosmio G20 User Manual

Toshiba Qosmio G20
444 pages
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Toshiba Personal Computer
QOSMIO G20
Maintenance Manual
TOSHIBA CORPORATION
File Number 960-511
[CONFIDENTIAL]

Table of Contents

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Toshiba Qosmio G20 Specifications

General IconGeneral
BrandToshiba
ModelQosmio G20
CategoryLaptop
LanguageEnglish

Summary

Preface

Safety Precautions

Essential safety instructions before disassembling the computer.

Hardware Overview

Features

Details on the QOSMIO G20 series high-performance all-in-one PCs.

System Block Diagram

Visual representation of the computer's internal components and their connections.

2.5-inch Hard Disk Drive

Specifications and dimensions of the 2.5-inch Serial-ATA HDD.

Optical Drive

Information on the DVD Super Multi drive, including its read/write capabilities.

Power Supply & Batteries

Information on power supply functions and battery specifications.

AC Adapter

Specifications for the AC adapter used for charging the battery.

Troubleshooting Procedures

Troubleshooting Overview

Chapter's purpose: identifying Field Replaceable Units (FRUs) causing malfunctions.

Troubleshooting Flowchart

Guide for determining troubleshooting procedures based on system behavior.

Power Supply Troubleshooting

Steps to diagnose and resolve power supply issues.

System Board Troubleshooting

Procedures to determine if the system board is malfunctioning.

2.5” HDD Troubleshooting

Procedures to diagnose issues with the 2.5-inch HDD, including partition and format checks.

Keyboard Troubleshooting

Steps to check for keyboard malfunctions using diagnostic tests.

Display Troubleshooting

Steps to diagnose display problems by checking external monitor and running tests.

Wireless LAN Troubleshooting

Steps to check Wireless LAN transmitting-receiving and antenna connections.

Sound Troubleshooting

Steps to diagnose sound function issues by checking connections and running tests.

Tests and Diagnostics

The Diagnostic Test

Explanation of how to use Diagnostic Test programs for hardware modules.

Executing the Diagnostic Test

Step-by-step guide to start and navigate the diagnostic programs.

Check of the RAID configuration

Procedures to check RAID configuration and identify failed drives.

Setting of the hardware configuration

Steps for initial configuration of hardware and DMI information.

System Test

Procedures for performing system tests like ROM checksum and fan checks.

Memory Test

Steps to execute memory tests, including conventional, protected mode, and cache memory tests.

Keyboard Test

Procedure for testing the keyboard by displaying pressed key codes.

Display Test

Steps to perform display tests, including VRAM, gradation, and pattern displays.

Hard Disk Test

Procedures for testing the hard disk drive, including error code analysis.

ONLY ONE TEST

Tests unique functions of the model, including touch pad, LED, and sensors.

SETUP

Details on configuring system settings like memory, date/time, battery, passwords, and boot priority.

Replacement Procedures

Overview & Safety Precautions

General overview, safety guidelines, and important points before disassembly.

Tools and Equipment

Lists required tools and equipment for disassembly and assembly.

Battery pack Replacement

Procedures for removing and installing the main battery pack.

HDD Replacement

Procedures for removing and installing the Hard Disk Drive (HDD).

Memory module Replacement

Procedures for removing and installing memory modules.

Keyboard Replacement

Steps for removing and installing the keyboard.

Optical disk drive Replacement

Procedures for replacing and ejecting the optical disk drive.

System board Replacement

Steps for removing and installing the system board, including BIOS/EC/KBC updates.

LCD unit / FL inverter Replacement

Procedures for removing and installing the LCD unit and FL inverter.

Appendices

Handling the LCD Module

Precautions for safely handling the LCD module during assembly/disassembly.

Board Layout

Diagrams showing the layout of system board ICs and connectors.

Pin Assignment

Detailed pin assignments for various system board connectors.

BIOS Rewrite Procedures

Step-by-step guide on how to rewrite the system BIOS program.

EC/KBC Rewrite Procedures

Instructions for rewriting the EC/KBC system program.

Maintenance of TOSHIBA RAID

Procedures for repairing TOSHIBA RAID arrays, including drive log analysis.

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