qosmio f50(1).pdf

Toshiba Personal Computer

Qosmio F50

Maintenance Manual

TOSHIBA CORPORATION

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 Qosmio Maintenance Manual

First edition June. 2008

Disclaimer

The information presented in this manual has been reviewed and validated for accuracy. The

included set of instructions and descriptions are accurate for the TOSHIBA Qosmio at the

time of this manual's production. However, succeeding computers and manuals are subject to

change without notice. Therefore, Toshiba assumes no liability for damages incurred directly or

indirectly from errors, omissions, or discrepancies between any succeeding product and this

manual.

Trademarks

IBM is a registered trademark and IBM PC is a trademark of International

Business Machines Corporation.

Intel, Intel SpeedStep, Intel® CoreTM, Celeron and Centrino are trademarks

or registered trademarks of Intel Corporation.

Windows, Microsoft and Windows Vista® are registered trademarks of

Microsoft Corporation.

Photo CD is a trademark of Eastman Kodak.

Bluetooth is a trademark or registered trademark owned by its proprietor

and used by TOSHIBA under license.

Memory Stick is a registered trademark and i.LINK is a trademark of Sony

Corporation.

DVD MovieFactory is a registered trademarks of Ulead Systems, Inc.

Labelflash is a trademark of YAMAHA CORPORATION.

Manufactured under license from Dolby Laboratories.

Dolby and the double-D symbol are trademarks of Dolby Laboratories.

Dolby Home Theater is a trademark of Dolby Laboratories.

PalmCheck and TouchPad are trademarks of Synaptics Incorporated.

ExpressCard is a trademark of PCMCIA.

ConfigFree is a trademark of Toshiba Corporation.

Wi-Fi is a registered trademark of the Wi-Fi Alliance.

Secure Digital and SD are trademarks of SD Card Association.

MultiMediaCard and MMC are trademarks of MultiMediaCard Association.

xD-Picture Card is a trademark of FUJIFILM Corporation.

Other trademarks and registered trademarks not listed above may be used

in this manual.

Qosmio 0 Maintenance Manual

Preface

This maintenance manual describes how to perform hardware service maintenance for the

Toshiba Personal Computer Qosmio 0, referred to as the Qosmio 0 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 will be italicized and identified as shown below.

DANGER: “Danger” indicates the existence of a hazard that could result in death or

serious bodily injury if the safety instruction is not observed.

WARNING: “Warning” indicates the existence of a hazard that could result in bodily

injury if the safety instruction is not observed.

CAUTION: “Caution” indicates the existence of a hazard that could result in property

damage if the safety instruction is not observed.

NOTE: “Note” contains general information that relates to your safe maintenance

service.

Improper repair of the computer may result in safety hazards. Toshiba requires service

technicians and authorized dealers or service providers to ensure the following safety precautions

are adhered to strictly.

Be sure to fasten screws securely with the right screwdriver. If a screw is not fully

fastened, it could come loose, creating a danger of a short circuit, which could cause

overheating, smoke or fire.

If you replace the battery pack or RTC battery, be sure to use only the same model battery

or an equivalent battery recommended by Toshiba. Installation of the wrong battery can

cause the battery to explode.

Qosmio Maintenance Manual

iii

The manual is divided into the following parts:

Chapter 1

Hardware Overview describes the Qosmio 0 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 module

Board layout

Pin assignments

Keyboard scan/character codes

Key layout

Screw torque list

Reliability

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

Qosmio 0 Maintenance Manual

Some operations require you to simultaneously use two or more keys. We identify such

operations by the key top symbols separated by a plus (+) sign. For example, Ctrl + Pause

(Break) means you must hold down Ctrl and at the same time press Pause (Break) . If three

keys are used, hold down the first two and at the same time press the third.

User input

Text that you are instructed to type in is shown in the boldface type below:

DISKCOPY A: B:

The display

Text generated by the computer that appears on its display is presented in the typeface below:

Format complete

System transferred

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