Toshiba tecra a5 Service Manual

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Toshiba Personal Computer

Tecra A5

Maintenance Manual

TOSHIBA CORPORATION

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© 2005 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 Tecra A5 Maintenance Manual First edition May 2005

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 A5 Series 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 OS/2 and PS/2 are trademarks of IBM Corporation. Microsoft, MS-DOS, Windows, DirectSound and DirectMusic are registered trademarks of Microsoft Corporation. Intel and Pentium are registered trademarks, and SpeedStep is a trademark of Intel Corporation. Sound Blaster is a registered trademark of Creative Technology Ltd. Centronics is a registered trademark of Centronics Data Computer Corporation. Photo CD is a trademark of Eastman Kodak. All other properties are trademarks or registered trademarks of their respective holders.

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Tecra A5 Maintenance Manual

Preface

This maintenance manual describes how to perform hardware service maintenance for the Toshiba Personal Computer Tecra A5, referred to as the A5 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.

Tecra A5 Maintenance Manual

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The manual is divided into the following parts:

Chapter 1 Hardware Overview describes the A5 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 module  Board layout  Pin assignments  Keyboard scan/character codes  Key layout  Screw torque list  Reliability

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Tecra A5 Maintenance Manual

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 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

Tecra A5 Maintenance Manual

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Tecra A5 Maintenance Manual

Chapter 1 Hardware Overview

1.1 Features............................................................................................................................1-1

1.2 System Unit......................................................................................................................1-6

1.3 2.5-inch Hard Disk Drive.................................................................................................1-8

1.4 Optical device Drives.......................................................................................................1-9

1.5 Power Supply.................................................................................................................1-12

1.6 Batteries .........................................................................................................................1-14

Chapter 2 Troubleshooting Procedures

2.1 Troubleshooting Introduction..........................................................................................2-1

2.2 Troubleshooting Flowchart..............................................................................................2-2

2.3 Power Supply Troubleshooting .......................................................................................2-7

2.4 Display Troubleshooting...................................................................................……….2-12

2.5 Keyboard Troubleshooting ............................................................................................2-15

2.6 External USB Devices Troubleshooting........................................................................2-17

2.7 TV-Out Failure Troubleshooting...................................................................................2-19

2.8 TouchPad Troubleshooting............................................................................................2-21

2.9 Speaker Troubleshooting............................................................................................... 2-23

2.10 Optical Drive Troubleshooting...................................................................................... 2-25

2.11 Modem Troubleshooting................................................................................................2-28

2.12 PCMCIA Troubleshooting............................................................................................. 2-30

2.13 IEEE 1394 Troubleshooting ..........................................................................................2-32

2.14 Wireless LAN Troubleshooting..................................................................................... 2-34

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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...............................................................................................................3-8

3.5 Speaker Audio Test.........................................................................................................3=9

3.6 Fan ON/OFF Test...........................................................................................................3-10

3.7 Main Battery Charge Test ..............................................................................................3-11

3.8 FDD Test........................................................................................................................3-12

3.9 CD-ROM Test................................................................................................................3-13

3.10 Keyboard Test................................................................................................................3-14

3.11 Mouse (Pad) Test ...........................................................................................................3-16

3.12 LCD Pixels Mode Test...................................................................................................3-18

3.13 Magnetic Switch Test.....................................................................................................3-19

3.14 HDD R/W Test...............................................................................................................3-20

3.15 LAN Test........................................................................................................................3-22

3.16 RTC Test........................................................................................................................3-14

3.17 Read 1394 GUID.............................................................................................................3-25

3.18 CD Control Button Test ..................................................................................................3-16

3.19 Speaker EQ Type Check&Re-Write ................................................................................3-18

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Tecra A5 Maintenance Manual

Chapter 4 Replacement Procedures

4.1 General......................................................................................................................... 4-1

4.2 Battery.......................................................................................................................... 4-7

4.3 PC Card ........................................................................................................................ 4-9

4.4 HDD ........................................................................................................................... 4-11

4.5 Expansion Memory.................................................................................................... 4-13

4.6 Optical Drive Module................................................................................................. 4-16

4.7 Optical Drive.............................................................................................................. 4-18

4.8 Keyboard.................................................................................................................... 4-20

4.9 Bluetooth module....................................................................................................... 4-23

4.10 Wireless LAN Unit..................................................................................................... 4-27

4.11 Modem ....................................................................................................................... 4-31

4.12 Display Assembly ...................................................................................................... 4-34

4.13 Top Cover................................................................................................................... 4-37

4.14 Touch Pad................................................................................................................... 4-40

4.15 Direct Play Button Module ........................................................................................ 4-42

4.16 Memory...................................................................................................................... 4-44

4.17 System Board ............................................................................................................. 4-48

4.18 Fan & CPU................................................................................................................. 4-51

4.19 USB Module............................................................................................................... 4-56

4.20 VGA Module.............................................................................................................. 4-58

4.21 Display Mask.............................................................................................................. 4-60

4.22 Speakers ..................................................................................................................... 4-62

4.23 FL Inverter Board....................................................................................................... 4-64

4.24 LCD Module .............................................................................................................. 4-66

Tecra A5 Maintenance Manual

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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

Appendix E Key Layout.......................................................................................................... E-1

Appendix F Series Screw Torque List .................................................................................... F-1

Appendix G Reliability............................................................................................................G-1

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Tecra A5 Maintenance Manual

Chapter 1 Hardware Overview

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1 Hardware Overview

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Tecra A5 Maintenance Manual

1 Hardware Overview

Chapter 1 Contents

1.1 Features......................................................................................................................1-1

1.2 System Unit................................................................................................................1-6

1.3 2.5-inch Hard Disk Drive...........................................................................................1-8

1.4 Optical device Drives.................................................................................................1-9

1.4.1 DVD-ROM & CD-RW ............................................................................... 1-9

1.4.2 DVD-ROM................................................................................................1-10

1.4.3 DVD Super Multi Double Layer...............................................................1-11

1.5 Power Supply...........................................................................................................1-12

1.6 Batteries ...................................................................................................................1-14

1.6.1 Main Battery.............................................................................................. 1-15

1.6.2 RTC battery...............................................................................................1-16

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1 Hardware Overview

Figures

Figure 1-1 2.5-inch HDD ................................................................................................ 1-8

Figures

Table 1-1 2.5-inch HDD specifications ......................................................................... 1-8

Table 1-2 DVD-ROM & CD-RW drive specifications ................................................. 1-9

Table 1-3 DVD-ROM drive specifications.................................................................. 1-10

Table 1-4 DVD Super Multi Double Layer drive specifications................................. 1-11

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Tecra A5 Maintenance Manual

1.1 Features 1 Hardware Overview

1.1 Features

The Tecra A5 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 Pentium-M Dothan 1.6GHz, 1.73GHz, 1.86GHz, 2.0GHz, and 2.13GHz

• Intel Celeron-M Dothan 1.3GHz, 1.4GHz, and 1.5GHz

• FCPGA CPU

 Chipset

• Intel 915PM/915GM/910GML Express chipset for system memory controller

• ATI MOBILITY RADEON X600SE GPU with HyperMemory

• NVIDIA GeForce Go 6200 GPU with TurboCache technology

• Intel ICH6-M for PCI to LPC bridge, PCI IDE controller, Power Management

• ENE KB910Q B4 for keyboard controller, Battery Management Unit, and RTC

• Marvell 88E8053 GIGA LAN controller

• Marvell 88E8036 10/100 LAN controller

• Marvell 88SA8040 for SATA to PATA bridge

• LPC47N217/LPC47N207 Super IO IC for FIR

• LPC47N217 Super IO IC for Printer port

• ALC250_D for AC97 Codec

• TI PCI7411/PCI6411/PCI14510RGVF/PCI1510RGVF for PCMCIA controller

• TI PCI7411/PCI14510RGVF for 1394 controller

• TI PCI7411 for 5-in-1 card reader controller

 Display

• 14” (15:9) TFT screen with a resolution of 1280 horizontal x 768 vertical pixels,

Logic

non-CSV normal brightness, WXGA

CSV normal brightness, WXGA

• 14” (15:9) TFT screen with a resolution of 1280 horizontal x 768 vertical pixels,

CSV high brightness, WXGA

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1 Hardware Overview 1.1 Features

 Memory

• DDR-I 333MHz specification compliant

• Two 200-pin (Jedec Standard) +2.5V SO-DIMM DDR sockets with

256MB/512MB/1GB DDR module

• Maximum upgradeable to 2GB by two 1GB SO-DIMM modules

 BIOS

• 1MB Flash ROM for system and keyboard BIOS

• Suspend to RAM/Disk

• Password protection (System)

• Windows 98 ready with PnP

• Various hot keys for system control

• Refreshable

• Complete ACPI 1.0B function

 Power

• 6 cells of Li-Ion 18650 size, smart battery pack with 4300mAH x 10.8V

• 12 cells of Li-Ion 18650 size smart battery pack with 8600mAH x 10.8V

• 4 hours charging time to 100% capacity on 4300mAH Li-Ion battery

(System off or Suspend)

• 4 hours charging time to 100% capacity on 8600mAH Li-Ion battery

(System off or Suspend)

 HDD

• 9.5mm, 2.5" HDD up to 120 GB

• Bus Master IDE

• 9.5m/m, 2.5”HDD Support

• Support Ultra 100 synchronous DMA

 Fixed Device Drivers

• 5.25” 12.7mm height, DVD-ROM & CD-RW combo device

• 5.25” 12.7mm height, DVD-ROM device

• 5.25” 12.7mm height, DVD Super-multi device

 Optional Devices

• 128MB/256MB/512MB/1024MB SO-DIMM DDR modules

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Tecra A5 Maintenance Manual

1.1 Features 1 Hardware Overview

• VGA controller NV44MV with 32MB/64MB VRAM or M24C with 64MB/128MB

VRAM

• MINI PCI wireless module (802.11g: Atheros MB43/MB51, Intel Calexico2;

802.11a/g: Atheros MB44, Intel Calexico2)

• Dual-band built-in antenna for wireless LAN communication

• MDC Modem

• Mini PCI module (Analog TV tuner)

• External USB remote control devices

 Keyboard

The computer's keyboard layouts are compatible with a 101/102-key enhanced keyboard. There are five types of keys: typewriter keys, keypad overlay, function keys, soft keys and cursor control keys. The typewriter keys and keypad overlay keys are gray. The other keys are dark gray.

 Touch Pad

This pointing control device, located in the center of the keyboard palm-rest, provides convenient control of the cursor without requiring desk space for a mouse. The Touch Pad incorporates two mouse (left and right) buttons for universal usage.

 I/O Ports

• Four USB (V2.) ports

• One DDC2b compliant 15-pin VGA port

• One S-Video port

• One microphone/mono-in port

• One headphone-out jack

• VR volume control

• Wireless communication switch

• FIR

• One DC-in jack

• One RJ-11 jack for 56kbps V.92 modem

• One RJ-45 jack with LED indicator

• Kensington lock

• One IEEE 1394 port

• One 5-in-1 push-push type flash card connector

• One type II PCMCIA slot with shutter door

• One infrared (IrDA 1.1) port

• One TV outs-video port (4-pin), compatible with PAL or NTSC TV standard

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1-3

1 Hardware Overview 1.1 Features

 PCMCIA Card Organization

• One type II card socket

• SRAM, OTPROM, FLASH ROM, mask ROM memory card up to 64MB

• Modem/LAN card

• CardBus card

• ACPI 1.0B compliant

• Supports SD/MMC/MS/MS Pro/xD formats

• High speed SD support

• SD-IO supported

• 1.8" 10.5mm removable ATA device

• CardBus card or PC card with hot insertion and removal

• Support 5V/3.3V PC Cards and 3.3V Cardbus cards

• Supports PCMCIA-ATA Specification

 Multiple Digital Media Card Slot

• TI PCI4510R Card Bus PCMCIA control or TI PCI7411 Card Bus PCMCIA

control

• Supports xD, SD, MS, MS Pro and MMC

 Universal Serial Bus (USB)

The computer has four Universal Serial Bus (USB) ports that comply with the USB 2.0 standard, which enable data transfer speeds more than 40 times faster than USB 1.1 (which this computer also supports.) The USB drives may be used to transfer data at low, full, and high speeds.

 External monitor port

A 15-pin CRT port supporting DDC 2B enables connection of an external monitor, which is recognized automatically by Video Electronics Standards Association (VESA) Display Data Channel (DDC) compatible functions.

 Sound system

Windows

compatible sound system provides internal speakers as well as jacks for an

external microphone and headphone.

 LAN port

The computer comes with an RJ-45 Local Area Network (LAN) port. The LAN port provides connectivity for LAN.

 Switches

• Power button

• Presto or Vivace from power off, WMP9 (programmable) on Windows

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Tecra A5 Maintenance Manual

1.1 Features 1 Hardware Overview

• Internet Exp lorer (programmable)

• Play/Pause

• Stop

• Fast forward

• Fast rewind

 Excellent power management function

• Standby mode, Suspend to RAM or Suspend to disk mode, using time out or hot

key

• HDD local standby mode by time out

• LCD local standby mode by time out

• Low battery alarm by beep

• Auto-backlight off when LCD cover closed

• Full ACPI 1.0B supported

• LCD auto-dim mode by time out

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1 Hardware Overview 1.2 System Unit

1.2 System Unit

The system unit is composed of the following major components:

 Processor (depending on the model you purchased)

• Mobile Intel® Celeron® M Processor 350J/360J/370 or

• Intel® Pentium® M Processor 725A/730/740/750/760/770

 System Logic

• Mobile Intel 915PM/915GM and 910GML Express Chipset host bridge/controller

processor with host bus support

• Integrated DRAM controller

• Integrated VGA controller

• Intel ICH6-M for PCI to LPC Bridge, PCI IDE controller, Power Management

Logic.

• PCI bus interface

• Power management functions

• Supports DMI

 Keyboard Controller

• ENE KB910 B4 is used for keyboard controller, battery management unit, and RTC.

 Memory

• System DRAM

• Two JEDEC standard 200-pin, 2.5V DDR I SO-DIMM memory support for

256MB/512MB/1024MB/2048MB.

• ROM BIOS for system and keyboard

• 1MB Flash ROM

• Slot: 2 SO-DIMM up to 1GB can be upgraded through memory expansion slot.

You need to remove existing SO-DIMM if SO-DIMM is installed in memory expansion slot. Maximum upgradeable system memory depends on the model.

• L2 Cache: 1MB L2 Cache (Intel® Celeron® M Processor) 2MB L2 Cache (Intel®

Pentium® M Processor)

• Video RAM: Depending on the model. Up to128 MB integrated solution and

shared with main memory for Intel® 915GM/ 910GML Express; External 64/128MB VGA DDR RAM for ATI MOBILITY™ RADEON® X600SE GPU; 32/64MB VGA DDR RAM for nVIDIA GeForce Go 6200

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Tecra A5 Maintenance Manual

1.2 System Unit 1 Hardware Overview

 Audio subsystem

• Realtek ALC250D for AC97 codec

− AC 97 2.2 compatible

− Leading mixed-digital technology

− 20-bit stereo digital-to-analog converters

− 18-bit stereo analog-to-digital converters

− Sample rate converters.

− Four analog line-level stereo inputs for LIN_IN, CD, VIDEO, and AUX

− Two analog line-level mono inputs for modem and internal PC beep

− Dual stereo line-level outputs for LINE_OUT and ALT_LINE _OUT

− Dual microphone inputs

− High quality differential CD input

− Extensive power management support

− Meets or exceeds the Microsoft® PC 99/2001 Audio & WHQL/QLP 2.0

audio

− Built-in 7-band digital hardware equalizer for optimizing speaker response

− Single chip with high S/N ratio (>100dB)

− Support of S/PDIF digital audio output is fully compliant with AC 97 2.2

specifications

− 3D stereo enhancement

− Supports double sampling rate (96KHz) of DVD audio playback

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1 Hardware Overview 1.3 2.5-inch Hard Disk Drive

1.3 2.5-inch Hard Disk Drive

The internal HDD is a random access non-volatile storage device. It has a non-removable

2.5-inch magnetic disk and mini-Winchester type magnetic heads. The computer supports up to100G HDD. 120GB is design ready.

The HDD is shown in Figure 1-1. Specifications are listed in Table 1-1.

Figure 1-1 2.5-inch HDD

Items 40GB 60GB 80GB 100GB

Formatted capacity (GB) 37.26 55.89 74.52 93.15

Logical Blocks (LBA) 78,125,000 117,187,500 156,301,488 195,371,568

Rotational speed (rpm) 4,200/5400 4,200/5400 4200/5400 4200/5400

Toshiba HDD Buffer (MB) 8/16 8/16 8/16 8/16

Hitachi HDD Buffer (MB) 2/8 8/8 8/8 NA/8

Bytes per sector 512 512 512 512

Table 1-1 2.5-inch HDD specifications

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Tecra A5 Maintenance Manual

1.4 Optical device Drives 1 Hardware Overview

1.4 Optical device Drives

1.4.1 DVD-ROM & CD-RW

The DVD-ROM and CD-RW drive accepts 12-cm (4.72-inch) and 8-cm (3.15-inch) discs. At maximum, the drive can play back a DVD at 8x speed, read CD-ROM at 24x speed, and write CD-R at 24x speed and CD-RW at 4x speed or High speed CD-RW at 10X or Ultra speed CDRW at 24X speed.

The specifications of the DVD-ROM & CD-RW drive are listed in Table 1-2.

Item DVD-ROM mode CD-ROM mode

Data transfer rate (Mbytes/s)

Access time (ms)

Average random access

33.3 (U-DMA transfer mode 2)

16.6 (PIO mode 4, Multiword DMA mode 2) 180 150

Data buffer size (Mbytes) 2MB

DVD:

DVD-VIDEO, DVD-ROM, DVD-R (3.9G, 4.7G), DVD-RW (Ver.1.1), DVD-RAM, DVD+R, DVD+RW, DVD+R DL.

Formats supported

CD:

CD-DA, CD-ROM, CD-R, CD-RW, CD-ROMXA, PhotoCD (multi-session), Video CD, CD-Extra (CD+), CD-Text

Table 1-2 DVD-ROM & CD-RW drive specifications

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1 Hardware Overview 1.4 Optical device Drives

1.4.2 DVD-ROM

The DVD-ROM drive accepts 12-cm (4.72-inch) and 8-cm (3.15-inch) discs. At maximum, the drive can play back a DVD at 8x speed, and read CD-ROM at 24x speed.

The specifications of the DVD-ROM drive are listed in Table 1-3

Item DVD-ROM mode CD-ROM mode

Data transfer rate (Mbytes/s)

Access time (ms)

Average random access

33.3 (U-DMA transfer mode 2)

16.6 (PIO mode 4, Multiword DMA mode 2) 180 150

Data buffer size (Mbytes) 256 KB

DVD:

DVD-VIDEO, DVD-ROM, DVD-R (4.7G), DVD-RW (Ver.1.1), DVD-RAM, DVD+R, DVD+RW.

Formats supported

CD:

CD-DA, CD-ROM, CD-R, CD-RW, CD-ROMXA, PhotoCD (multi-session), Video CD, CD-Extra (CD+), CD-Text

Table 1-3 DVD-ROM drive specifications

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Tecra A5 Maintenance Manual

1.4 Optical device Drives 1 Hardware Overview

1.4.3 DVD Super Multi Double Layer

The DVD Super Multi drive accepts 12-cm (4.72-inch) and 8-cm (3.15-inch) discs. At maximum, the drive can play back a DVD at 8x speed, read CD-ROM at 24x speed, and write CD-R at 24x speed and CD-RW at 4x speed or Ultra and High speed CD-RW at 10x speed and DVD-R at 8x speed and DVD-RW at 4x speed and DVD+R at 8x speed and DVD+RW at 4x speed and DVDRAM at 5x speed and DVD+R DL at 2.4x speed.

The specifications of the DVD Super Multi Double Layer drive are listed in Table 1-4

Item DVD-ROM mode CD-ROM mode

Data transfer rate (Mbytes/s)

Access time (ms)

Average random access

33.3 (U-DMA transfer mode 2)

16.6 (PIO mode 4, Multiword DMA mode 2) 180 150

Data buffer size (Mbytes) 2MB

DVD:

DVD-VIDEO, DVD-ROM, DVD-R (4.7G), DVD-RW (Ver.1.1), DVD-RAM, DVD+R, DVD+RW, DVD+R DL.

Formats supported

CD:

CD-DA, CD-ROM, CD-R, CD-RW, CD-ROMXA, PhotoCD (multi-session), Video CD, CD-Extra (CD+), CD-Text

Table 1-4 DVD Super Multi Double Layer drive specifications

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1 Hardware Overview 1.5 Power Supply

1.5 Power Supply

This specification defines the performance and characteristics of the 75W AC adapter power supply. It supplies a constant voltage 15V output source for Tecra A5 series notebook computer.

 A/D conversion

• The EC uses 10-bit sampling for A/D conversion to determine the following values: – AC adaptor current – Battery and temperature

 AC adaptor and battery check

• The EC checks the following by A/D converted values: – Battery installed

• The EC checks the following by GPIO values: – AC adaptor connected

 Abnormal check

• The EC determines whether the condition is abnormal, and if so, stores an error

code into the error register.

 Input port management

• The EC monitors the following input signal status: – System power ON/OFF status – Direct CD power ON/OFF status

 Beep and LED control

• Beep is caused by the low battery status.

• The EC controls the following two kinds of LED

– DC IN LED (one color: green)

• Green: indicates AC adaptor is connected – Battery LED (two colors: orange and green)

• Green solid: The battery is fully charged.

• Orange: The computer is quick-charging the battery / the battery is low.

 Power ON/OFF sequence

• When power is turned on or off, the EC starts the power on or off sequence. – SQ0-4: power ON sequence – SQ5-B: power OFF sequence

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1.5 Power Supply 1 Hardware Overview

 Battery charging control

• The EC controls the following. – The quick charging ON/OFF – The detection of full charge

 Detection of the low battery

• The EC detects the low battery point by the gas gauge. – LB10M: The system will be driven by the battery for 12 more minutes. – LB0: The battery won't be able to drive the system after 3 minutes. – LB1: The battery can drive the system only during the suspend process. – LB2: The battery cannot drive the system.

 New battery installation

• When a new battery is installed, the EC communicates with the E2PROM in the

battery to read information of the newly installed battery.

 Battery capacity calculation

• The EC reads battery remaining and percentage capacity from the battery through

SMBus.

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1 Hardware Overview 1.6 Batteries

1.6 Batteries

The computer has two types of battery:

 Main battery pack (18650 size)  RTC battery

The removable main battery pack is the computer’s main power source when the AC adaptor is not attached.

The battery specifications are listed in the table below.

Battery name Material Output voltage Capacity

Main battery (6 cell) Lithium-Ion 10.8V 4300 mAh Main battery (12 cell) Lithium-Ion 10.8V 8600 mAh RTC battery Lithium 3.0V 15 mAh

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Tecra A5 Maintenance Manual

1.6 Batteries 1 Hardware Overview

1.6.1 Main Battery

Battery charging is controlled by a power supply microprocessor that is mounted on the system board. The power supply microprocessor controls whether the charge is on or off and detects a full charge when the AC adaptor and battery are attached to the computer. The system charges the battery using quick charge or trickle charge.

 Quick Battery Charge

When the AC adaptor is attached, there are two types of quick charges: quick charge when the system is powered off and normal charge when the system is powered on.

The times required for charges are listed in the table below.

Status Charging time

Normal charge (power on) 12 hours or longer Quick charge (power off) About 4 hours

NOTES

1. The time required for normal charge is affected by the amount of power the system is consuming. Use of the fluorescent lamp and frequent disk access diverts power and lengthens the charge time.

2. Using quick charge, the power supply microprocessor automatically stops the charge after eight hours regardless of the condition of the battery. Overcharging could cause the battery to explode.

If any of the following occurs, the battery quick charge process stops.

1. The battery becomes fully charged.

2. The AC adaptor or battery is removed.

3. The battery or output voltage is abnormal.

4. The battery temperature is abnormal.

5. The battery SMBus communication fails.

6. The battery cell is bad.

 Detection of full charge

A full charge is detected from the battery pack through SMBus when the battery is charging.

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1-15

1 Hardware Overview 1.6 Batteries

1.6.2 RTC battery

The RTC battery provides power to keep the current date, time and other setup information in memory while the computer is turned off. The table below lists the charging time and data preservation period of the RTC battery. The RTC battery is charged by the adaptor or main battery, while the computer is powered on.

Status Time

Charging Time (power on) About 24 hou rs Data preservation period (full charge) 1 month

1-16

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Chapter 2 Troubleshooting Procedures

[CONFIDENTIAL]

2 Troubleshooting Procedures

Chapter 2 Contents

2.1 Troubleshooting Introduction.....................................................................................2-1

2.2 Troubleshooting Flowchart ........................................................................................2-2

2.3 Power Supply Troubleshooting..................................................................................2-7

2.4 Display Troubleshooting.............................................................................……….2-12

2.5 Keyboard Troubleshooting.......................................................................................2-15

2.6 External USB Devices Troubleshooting ..................................................................2-17

2.7 TV-Out Failure Troubleshooting..............................................................................2-19

2.8 TouchPad Troubleshooting ......................................................................................2-21

2.9 Speaker Troubleshooting..........................................................................................2-23

2.10 Optical Drive Troubleshooting.................................................................................2-25

2.11 Modem Troubleshooting..........................................................................................2-28

2.12 PCMCIA Troubleshooting.......................................................................................2-30

2.13 IEEE 1394 Troubleshooting.....................................................................................2-32

2.14 Wireless LAN Troubleshooting ...............................................................................2-34

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Figures

Figure 2-1 Troubleshooting flowchart (1/2).........................................................................2-3

Figure 2-1 Troubleshooting flowchart (2/2).........................................................................2-4

Figure 2-2 Power Supply Troubleshooting Process .............................................................2-7

Figure 2-3 Display troubleshooting process.......................................................................2-12

Figure 2-4 Keyboard troubleshooting process....................................................................2-15

Figure 2-5 External USB device troubleshooting process...................................................2-17

Figure 2-6 TV-out troubleshooting process........................................................................2-19

Figure 2-8 TouchPad troubleshooting process ................................................................... 2-21

Figure 2-9 Speaker troubleshooting process.......................................................................2-23

Figure 2-10 Optical drive troubleshooting process .........................................................2-25

Figure 2-11 Modem troubleshooting process.................................................................. 2-28

Figure 2-12 PCMCIA troubleshooting process...............................................................2-30

Figure 2-13 IEEE 1394 troubleshooting process.............................................................2-32

Figure 2-14 Wireless LAN troubleshooting process ....................................................... 2-34

Tables

Table 2-1 Battery LED...................................................................................................... 2-8

Table 2-2 DC-IN LED.......................................................................................................2-9

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2 Troubleshooting Procedures

2.1 Troubleshooting Introduction

Chapter 2 describes how to determine if a Field Replaceable Unit (FRU) in the computer is causing the computer to malfunction. The FRUs covered are:

1. Display 6. TouchPad 11. IEEE 1394 port

2. USB Floppy Drive 7. Speaker 12. Wireless LAN system

3. Keyboard 8. Optical drive

4. USB ports 9. Modem

5. TV-out port 10. PCMCIA unit

The Diagnostics Disk operations are described in Chapter 3. Detailed replacement procedures are given in Chapter 4.

The following tools are necessary for implementing the troubleshooting procedures:

1. Diagnostics Disk (Repair and Sound Repair)

2. Phillips screwdriver (2 mm)

3. 6mm nut driver (for the helix screw nuts on the rear ports for CPU door)

4. 2DD or 2HD formatted work disk for floppy disk drive testing

5. Sycard (PCMCIA test card)

6. Cleaning kit for floppy disk drive troubleshooting

7. Cleaning kit for optical drive troubleshooting

8. Multimeter

9. External monitor

10. USB compatible keyboard

11. Multimedia sound system with line-in and line-out ports

12. Headphones

13. USB test module and USB cable

14. Music CD

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2 Troubleshooting Procedures

2.2 Troubleshooting Flowchart

If you know the location of the malfunction, turn directly to the appropriate section of this chapter. If the problem is unspecified, use the flowchart in Figure 2-1 as a guide for determining which troubleshooting procedures to execute. Before performing any troubleshooting procedures, verify the following:

z Ask the user if a password is registered and, if it is, ask him or her to enter the password. z Verify with the customer that Toshiba Windows XP is installed on the hard disk. Operating

systems that were not preinstalled by Toshiba can cause the computer to malfunction.

z Make sure all optional equipment is removed from the computer. z Make sure the floppy disk drive, if installed, is empty. If no FDD module is installed, you

should use an external FDD to run the diagnostics tests

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2 Troubleshooting Procedures

STAR T

Con nect the AC adapter to the D C -IN sock et

Pe rfo rm th e P ower S u pp ly

Is the DC -IN L E D on ?

Yes

Is th e Batte ry LE D o n ?

Yes

Troubleshooting procedures in

section 2.3

Pe rfo rm th e P ower S u pp ly

Troubleshooting procedures in

section 2.3

T u rn th e P o wer s witch o n

Yes

Is the Power On LED on?

Yes

Is the "Toshiba" logo message display?

Yes

If the "password" message displays, type

the password, then p ress E nter.

Is Toshiba Windows being loaded?

Yes

Pe rfo rm th e P ower S u pp ly

Troubleshooting procedures in

section 2.3

Perform the D isplay

Troubleshooting procedures in

section 2.4

Perform diagnostics program.

Run CM165.EXE and select the

HARD DISK item.

Figure 2-1 Troubleshooting flowchart (1/2)

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2 Troubleshooting Procedures

Perform the Keyboard

Does typed characters appear correctly?

Yes

Insert the diagnostics disk into the FDD.

Then run the diagnostics test program.

Yes

Troubleshooting procedures

in section 2.6

Is the diagnostics test loaded?

Yes

Allow each test to perform

automatically

Is an error detected by any of the

diagnostics tests?

System is normal

Yes

Perform the FDD

Troubleshooting procedures

in section 2.5

After confirming which

diagnostics test has detected

an error, perform the

appropriate procedure as

outlined below.

2-4

End

Figure 2-1 Troubleshooting flowchart (2/2)

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2 Troubleshooting Procedures

If the diagnostics program cannot detect an error, the problem may be intermittent. The test program should be executed several times to isolate the problem. When a problem has been located, perform the appropriate troubleshooting procedures as follows:

1. If an error is detected by the battery test, perform the Power Supply Troubleshooting

procedures in Section 2.3.

2. If an error is detected by the display test, perform the Display Troubleshooting procedures

in Section 2.4.

3. If an error is detected by the keyboard test, perform the Keyboard Troubleshooting

procedures in Section 2.5.

4. If an error is detected by the TouchPad test, perform the TouchPad Troubleshooting

procedures in Section 2.9.

5. If an error is detected by the audio test, perform the Speaker Troubleshooting procedures

in Section 2.10 and the Optical Drive Troubleshooting Procedures in Section 2.12.

6. If an error is detected by the modem test, perform the Modem Troubleshooting

Procedures in Section 2.12.

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2 Troubleshooting Procedures

Other problems that are not covered by the diagnostics program may be discovered by a user.

1. If an error is detected when using an external USB device, perform the External USB

Devices Troubleshooting procedures in Section 2.6.

2. If an error is detected when using the TV-out connection, perform the TV-Out Failure

Troubleshooting procedures in Section 2.7.

3. If an error is detected when using the speakers, perform the Speaker Troubleshooting

procedures in Section 2.10.

4. If an error is detected when using the modem, perform the Modem Troubleshooting

procedures in Section 2.12.

5. If an error is detected when using the PCMCIA unit, perform the PCMCIA

Troubleshooting procedures in Section 2.13.

6. If an error is detected when using the IEEE1394 device, perform the IEEE1394 device

Troubleshooting procedures in Section 2.14.

7. If an error is detected when using the Wireless LAN, perform the Wireless LAN

Troubleshooting procedures in Section 2.15.

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2.3 Power Supply Troubleshooting

START

Check Power Supp ly Status

(Procedure 1)

Are the DC-IN and

Ba tte ry L EDs li t?

Yes

Check power supply

connections

(Procedure 3)

Can you turn the

computer on?

Are th e in te rn a l p o w er

connections secure?

Yes

Replace adaptor / battery

(Procedure 2)

Run diagnostic program

(Procedure 4)

Pe rfo rm intern al co n n ec tio n

check

(Procedure 5)

Yes

Replace system board

END

Figure 2-2 Power Supply Troubleshooting Process

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2 Troubleshooting Procedures

The power supply controls many functions and components. To determine if the power supply is functioning properly, start with Procedure 1 and continue with the other Procedures as instructed. The flowchart in Figure 2-2 gives a summary of the process. The procedures described in this section are:

Procedure 1: Power status check Procedure 2: Adaptor / battery replacement Procedure 3: Power supply connection check Procedure 4: Diagnostic check Procedure 5: Internal connection check

Procedure 1 Power Status Check

The following LEDs indicate the power supply status:

Battery LED DC-IN LED

The power supply controller displays the power supply status through the Battery and the DC-IN LEDs as listed in the tables below.

Table 2-1 Battery LED

Battery State LED colors Definition

Charging

Amber, solid on Battery charging with AC . Green, solid on Battery fully charged by AC Green color off Battery abnormal stop charging with AC

(Bad cell/ Overheated)

Discharging

Amber, blinking (LED on for 1 second

Battery within low state: 12 minutes

remaining every 4 seconds) Amber, blinking (LED on for 1 second

every 2 seconds)

Battery within critical low state: 3

minutes remaining. The system is

protected and cannot be re-powered on

without the AC power connected.

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Amber color off Battery not in low or critical low state;

It’s in discharging state

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2 Troubleshooting Procedures

Table 2-2 DC-IN LED

AC-IN LED Power supply status

Solid on AC power exists (LED is solid green). Off No AC power exists.

To check the power supply status, install a battery pack and connect an AC adaptor to the DC-IN port on the computer and to a power supply.

If the DC-IN LED or Battery LED is not lit, go to Procedure 2.

Procedure 2 Adaptor / battery replacement

A faulty adaptor may not supply power or may not charge the battery. Perform Check 1. Check 1 Connect a new AC adaptor. If the problem is not resolved, go to Check 2. Check 2 Insert a new battery. If the problem is still not resolved, go to Procedure 3.

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2 Troubleshooting Procedures

Procedure 3 Power supply connection check

The power supply wiring diagram is shown below:

A C ad aptor cord

AC power cord

adaptor

System

board

B a tter y

Any of the connectors may be disconnected. Perform Check 1. Check 1 Disconnect the AC power cord from wall outlet. Check the power cable for breaks. If

the power cord is damaged, connect a new AC power cord. If there is no damage, go to Check 2.

Check 2 Make sure the AC adaptor cord and AC power cord are firmly plugged into the DC-

IN socket, AC adaptor inlet and wall outlet. If these cables are connected correctly, go to Check 3.

Check 3 Make sure that the DC-IN input port socket is firmly secured to the system board of

the computer.

• If the DC-IN input socket is loose, go to Procedure 5.

• If it is not loose, go to Check 4.

Check 4 Use a multi-meter to make sure that the AC adaptor output voltage is close to 19 V.

If the output is several percent lower than 19 V, go to Check 5. If the output is close to 19 V, go to Check 6.

Check 5 Connect a new AC adaptor or AC power cord.

• If the DC-IN LED does not light, go to Procedure 4.

• If the battery LED does not light, go to Check 6.

Check 6 Make sure the battery pack is installed in the computer correctly. If the battery is

properly installed and the battery LED still does not light, go to Procedure 4.

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2 Troubleshooting Procedures

Procedure 4 Diagnostic check

The power supply may not charge the battery pack. Perform the following procedures:

1. Reinstall the battery pack.

2. Attach the AC adaptor and turn on the power. If you cannot turn on the power, go to

Procedure 5.

3. Run the Diagnostic test following the procedures described in Chapter 3, Tests and

Diagnostics. If no problem is detected, the battery is functioning normally.

Procedure 5 Replacement check

The system board may be disconnected or damaged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures. Check the connection between the AC adaptor and the system board. After checking the connection, perform Check 1:

Check 1 Use a multi-meter to make sure that the fuses on the system board are not blown. If a

fuse is not blown, go to Check 2. If a fuse is blown, go to Check 3.

Check 2 Make sure that the battery cable is firmly connected to the system board. If it is

connected firmly, go to Check 3.

Check 3 The system board may be damaged. Replace it with a new one following the

instructions in Chapter 4.

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2 Troubleshooting Procedures

2.4 Display Troubleshooting

STAR T

Yes

Perform external display check

(Pro ce d ure 1 )

Does the external

dis p lay fu nc tio n o k ?

Perform diagnostic check

(Pro ce d ure 2 )

Was a display

problem detected?

Yes

D isp la y is n o t

fau lty. C o n tin ue

troubleshooting-

refer to F igu re 2 .1

2-12

Perform connector and

Figure 2-3 Display troubleshooting process

[CONFIDENTIAL]

replacement check

(Pro ce d ure 3 )

Replace system board

END

TECRA A5 Series Maintenance Manual

2 Troubleshooting Procedures

This section describes how to determine if the computer’s display is functioning properly. The process is outlined in Figure 2-3. Start with Procedure 1 and continue with the other procedures as instructed.

Procedure 1: External display check Procedure 2: Diagnostic check Procedure 3: Connector and replacement check

Procedure 1 External display check

Connect an external display to the computer’s external monitor port, then boot the computer. The computer automatically detects the external display.

If the external display works correctly, the internal LCD may be damaged. Go to Procedure 3. If the external monitor appears to have the same problem as the internal monitor, the system

board may be damaged. Go to Procedure 2.

Procedure 2 Diagnostic check

The Display Test program is stored on the computer’s Diagnostics disk. This program checks the display controller on the system board. Insert the Diagnostics disk in the computer’s floppy disk drive, turn on the computer and run the test. Refer to Chapter 3, Tests and Diagnostics for details.

If an error is detected, go to Procedure 3. If an error is not detected, the display is functioning properly.

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2 Troubleshooting Procedures

Procedure 3 Connector and replacement check

The FL inverter board, LCD module, and system board are connected to the display circuits. Any of these components may be damaged. Refer to Chapter 4, Replacement Procedures, for instructions on how to disassemble the computer and then perform the following checks:

Check 1 Make sure the DDR RAM module is seated properly. Test display again. If the

problem still exits, replace the DDR RAM module. If the problem still exists, perform Check 2.

Check 2 Replace the FL inverter board with a new one and test display again. If the problem

still exists, perform Check 3.

Check 3 Replace the LCD module with a new one and test display again. If the problem still

exists, perform Check 4.

Check 4 Replace the LCD/FL cable with a new one and test display again. If the problem still

exists, perform Check 5.

Check 5 Replace the CPU with another of the same specifications. If the problem still exists,

perform Check 6.

Check 6 The system board may be damaged. Replace it with a new one.

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2 Troubleshooting Procedures

2.5 Keyboard Troubleshooting

STAR T

Perform external keyboard check

(Pro ce d ure 1 )

Does the external

keyboard function ok?

Yes

Perform diagnostic check

(Pro ce d ure 2 )

W as a keyboard

problem detected?

Yes

Keyboard is not fau lty. C o n tin ue

troubleshooting-

refer to F igu re 2 .1

Perform connector and

replacement check

(Pro ce d ure 3 )

Replace system board

END

Figure 2-4 Keyboard troubleshooting process

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2 Troubleshooting Procedures

To determine if the computer’s keyboard is functioning properly, perform the following procedures. Figure 2-5 outlines the process. Start with Procedure 1 and continue with the other procedures as instructed.

Procedure 1: External keyboard check Procedure 2: Diagnostic check Procedure 3: Connector and replacement check

Procedure 1 External keyboard check

Connect a USB keyboard to one of the computer’s USB ports, then boot the computer. The computer automatically detects the external keyboard.

If the external keyboard works correctly, the internal keyboard or its connections may be faulty. Go to Procedure 2.

If the external keyboard appears to have the same problem as the internal keyboard, the system board may be damaged. Replace it with a new one following the instructions in Chapter 4.

Procedure 2 Diagnostic check

Run the Diagnostic Program, which will automatically execute the Keyboard Test. Refer to Chapter 3, Tests and Diagnostics for more information on how to run the program.

If an error is located, go to Procedure 3. If an error does not occur, the keyboard is functioning properly.

Procedure 3 Connector and replacement check

The keyboard and/or system board may be disconnected or damaged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and perform the following checks.

Check 1 Make sure the keyboard cable is firmly connected to the system board.

If the connection is loose, reconnect firmly and repeat Procedure 2. If there is still an error, go to Check 2.

Check 2 The keyboard may be damaged. Replace it with a new one following the instructions

in Chapter 4. If the problem still exists, perform Check 3.

Check 3 The system board may be damaged. Replace it with a new one following the

instructions in Chapter 4.

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2 Troubleshooting Procedures

2.6 External USB Devices Troubleshooting

STAR T

Pe rform e xtern al de vice and

connection check

(Pro ce du re 1 )

Check USB port

connection

Yes

D o e s th e d ev ic e f un c tio n

when connected to a

different U SB p ort?

D o e s a n alte r na tiv e U S B

de v ice fu n ction c o rre c tly?

Replace system board

(Pro ce du re 2 )

END

Yes

O rig in a l USB

de v ice is fau lty

Figure 2-5 External USB device troubleshooting process

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2 Troubleshooting Procedures

To determine if the computer’s external USB devices are functioning properly, perform the following procedures. Figure 2-6 outlines the process. Start with Procedure 1 and continue as instructed.

Procedure 1: External device and connection check Procedure 2: Replace system board

Procedure 1 External device and connection check

The USB device may be damaged or the connection may be faulty. Perform Check 1. Check 1 Make sure USB device cable is firmly plugged into one of the USB sockets. If the

cable is connected correctly, go to Check 2.

Check 2 Plug the USB device into another USB socket (there are three in all). If the USB

device still does not work, go to Check 4. If the device functions correctly when connected to another USB port, go to Check 3.

Check 3 Make sure that the USB socket is firmly secured to the system board of the computer.

If the malfunction remains, the system board may be damaged. Go to Procedure 2.

Check 4 Connect an alternative USB device to one of the computer’s USB ports, and then

boot the computer. The computer automatically detects the external device. If the alternative USB device works correctly, the original device may be damaged

and should be replaced. If the alternative USB device appears to have the same problem as the original

device, the system board may be damaged. Go to Procedure 2.

Procedure 2 Replace system board

If the error persists, the system board may be damaged. Replace it with a new one following the instructions in Chapter 4.

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2 Troubleshooting Procedures

2.7 TV-Out Failure Troubleshooting

STAR T

Perform TV connection check

(Pro ce du re 1 )

Does replacement TV cable

function properly?

Perform TV set check

(Pro ce du re 2 )

TV functioning ok?

Yes

Replace system board

Replace TV cable

Use d ifferent T V

set

END

Figure 2-6 TV-out troubleshooting process

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2 Troubleshooting Procedures

To determine if the computer’s TV-out port is functioning properly, perform the following procedures. Figure 2-7 outlines the process. Start with Procedure 1 and continue as instructed.

Procedure 1: TV connection check Procedure 2: TV set check

Procedure 1 TV connection check

The TV cable may be damaged or the connections may be loose. Perform Check 1: Check 1 Make sure TV cable is firmly plugged into both the TV set and the TV-out port of the

computer. If the cable is connected correctly, go to Check 2.

Check 2 Make sure the TV-out port is firmly secured to the system board of the computer. If

the malfunction remains, go to Check 3.

Check 3 The TV cable may be damaged. Replace with a good cable. If the malfunction

remains, go to Procedure 2.

Procedure 2 TV set check

The TV set may be faulty. Perform Check 1: Check 1 Try using the set for television reception. If it does not work, the set may be

damaged. If the set does work, perform Check 2.

Check 2 Try connecting a different television to the computer. If the replacement television

works, the original set may be damaged. If the replacement set does not work the system board may be damaged. Replace it with a new one following the instructions in Chapter 4.

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2 Troubleshooting Procedures

2.8 TouchPad Troubleshooting

START

TouchPad connection

check (Procedure 1)

TouchPad replacement

check (Procedure 2)

Replace system board

END

Figure 2-8 TouchPad troubleshooting process

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2 Troubleshooting Procedures

To determine if the computer’s built-in TouchPad is functioning properly, perform the following procedures. Figure 2-9 outlines the process. Start with Procedure 1 and continue as instructed.

Procedure 1: TouchPad connection check Procedure 2: TouchPad replacement check

Procedure 1 TouchPad connection check

The TouchPad is connected via the TouchPad FPC to the system board. Make sure the TouchPad FPC cable is firmly connected to the TouchPad and system board. Refer to Chapter 4, Replacement Procedures, for instructions on how to disassemble the computer and then perform the following checks.

If any of the connections are loose, reconnect firmly. If any of the connections is damaged, or there is still an error, go to Procedure 2.

Procedure 2 TouchPad replacement check

The TouchPad unit or FPC may be defective or damaged. Replace each with a new one following the steps in Chapter 4. If the FDD is still not functioning properly, replace the system board with a new one following the steps in Chapter 4.

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2 Troubleshooting Procedures

2.9 Speaker Troubleshooting

START

Perform audio source test

(Procedure 1)

Speakers are not

Do all sources have

same problem?

Yes

Perform earphone test

(Procedure 2)

faulty. Continue

troubleshooting -

see Figure 2-1

Do earphones

function correctly?

Yes

Perform connection check

(Procedure 3)

Perform replacement

check

(Procedure 4)

Replace system board

END

Figure 2-9 Speaker troubleshooting process

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2 Troubleshooting Procedures

To determine if the computer’s built-in speakers are functioning properly, perform the following procedures. Figure 2-10 outlines the process. First adjust the speaker volume to an appropriate level. Start with Procedure 1 and continue as instructed.

Procedure 1: Audio source test Procedure 2: Earphone test Procedure 3: Connection check Procedure 4: Replacement check

Procedure 1 Audio source test

Try different audio sources (e.g. an audio CD and digital music file) to determine whether the fault is in the speaker system or not. If not all sources have sound problem, the problem is in the source devices. If all have the same problem, continue with Procedure 2.

Procedure 2 Earphone test

Connect a set if earphones or external speakers. If these function correctly, go to Procedure 3. If they do not function correctly, the system board may be defective or damaged. Replace it with a new one.

Procedure 3 Connection check

Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and make sure the speaker cable is firmly connected to the audio board. If the stereo speakers are still not functioning properly, go to Procedure 4.

Procedure 4 Replacement check

If the stereo speakers don't sound properly, the stereo speakers may be defective or damaged. Replace them with new ones. If the stereo speakers still do not work properly, try replacing in turn the audio board and system board.

2-24

[CONFIDENTIAL]

TECRA A5 Series Maintenance Manual

2 Troubleshooting Procedures

2.10 Optical Drive Troubleshooting

START

Perform audio CD check

(Procedure 1)

Perform drive-

Audio CD functions ok?

cleaning check

(Procedure 2)

Yes

Perform software check

(Procedure 3)

Perform diagnostic test

(Procedure 4)

Perform connection and

replacement check

(Procedure 5)

Replace system board

END

Figure 2-10 Optical drive troubleshooting process

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2 Troubleshooting Procedures

This section describes how to determine if the computer’s internal optical drive is functioning properly. The Satellite P10 module bays can accommodate the following optical drives:

• DVD-R/RW device

• DVD-ROM device

• DVD Multi-drive device

• COMBO device

Figure 2-11 outlines the process. Perform the steps below starting with Procedure 1 and continue with the other procedures as required.

Procedure 1: Audio CD test Procedure 2: Drive cleaning check Procedure 3: Software check Procedure 4: Diagnostic test Procedure 5: Connection and replacement check

Procedure 1 Audio CD check

First, insert an audio CD into the CD/DVD drive. If it works, the problem is not with the drive. Go to Procedure 3. If the audio CD does not work, go to Procedure 2. If the CD/DVD LED on the front panel does not light when the disc is played and the drive gives no response, go straight to Procedure 3.

Procedure 2 Drive cleaning check

Insert a CD/DVD drive-cleaning disk into the drive clean according to the drive-cleaning product instructions. If the problem persists, go to Procedure 3.

Procedure 3 Software check

Ensure that the appropriate driver has been installed on the computer for the CD/DVD drive.

Procedure 4 Diagnostic test

The audio test program stored in the Diagnostics Disk will test the drive’s ability to play an audio CD. See Chapter 3 for details. If any errors occur while executing the diagnostic program, go to Procedure 5.

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2 Troubleshooting Procedures

Procedure 5 Connection check and replacement check

The optical drive connects to the system board. The drive may be disconnected, or the drive or system board may be damaged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures, and perform the following checks:

Check 1 Make sure the drive is firmly connected to the system board. If the connection is

good and there is still an error, go to Check 2.

Check 2 The drive or drive cable may be defective or damaged. Replace each with a new one

following the steps in Chapter 4, Replacement Procedures. If the drive is still not functioning properly, perform Check 3.

Check 3 The system board may be damaged. Replace it with new one following the

instructions in Chapter 4, Replacement Procedures.

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2 Troubleshooting Procedures

2.11 Modem Troubleshooting

START

Perform tele phone line

connection check

(Procedure 1)

Computer unable to

detect telephone signal?

Perform connection check

(Procedure 2)

Perform replacement

check

(Procedure 3)

Replace system board

Yes

Check / replace

telephone line and

connections

2-28

Figure 2-11 Modem troubleshooting process

[CONFIDENTIAL]

END

TECRA A5 Series Maintenance Manual

2 Troubleshooting Procedures

This section describes how to determine if the computer's modem is functioning properly. Figure 2-12 outlines the process. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required.

Procedure 1: Telephone line connection check Procedure 2: Modem card connection check Procedure 3: Modem card replacement check

Procedure 1 Telephone line connection check

The telephone cable may be damaged or the connections may be loose. Attempt to connect the computer to a network through using the modem. If the modem does not function at all, go to Procedure 3. If the attempt fails because the computer detects no telephone signal, the fault may be in the telephone cable, the wall socket or the modem port. Perform Check 1:

Check 1 Make sure telephone cable is firmly plugged into both the telephone wall socket and

the modem port of the computer. If the cable is connected correctly, go to Check 2.

Check 2 Make sure the modem port is firmly secured to the system board of the computer. If

the malfunction remains, go to Check 3.

Check 3 The telephone cable may be damaged. Replace with a good cable. If the malfunction

remains, go to Procedure 2.

Procedure 2 Modem card connection check

Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and ensure that the modem card is well connected to the system board. If the problem persists, perform Procedure 3.

Procedure 3 Modem replacement check

The modem card or RJ-11 jack may be faulty. Try replacing them. If the problem persists, the system board may be defective or damaged. Replace the System Board with a new one following the steps in Chapter 4, Replacement Procedures.

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2 Troubleshooting Procedures

2.12 PCMCIA Troubleshooting

START

Perform SYCARD test

(Procedure 1)

Do errors occur during

SYCARD test?

Yes

Perform PCMCIA socket

replacement check

(Procedure 2)

Replace system board

END

PCMCIA unit is

not faulty.

Figure 2-12 PCMCIA troubleshooting process

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2 Troubleshooting Procedures

This section describes how to determine if the PCMCIA card player is functioning properly. The process is summarized in Figure 2-13. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required.

Procedure 1: Sycard test Procedure 2: PCMCIA socket replacement check

Procedure 1 SYCARD test

The SYCARD test card contains a PCMCIA test program. Ensure the card in fully inserted into the socket before running the program. If an error occurs during the SYCARD test, perform Procedure 2. If no error occurs, it is likely that the original PC card was faulty.

Procedure 2 PCMCIA socket replacement check

The PCMCIA socket may be damaged or defective, for instance the socket pins can be bent. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and replace the socket. If the problem persists, the system board may be defective or damaged. Replace the system board with a new one following the steps in Chapter 4.

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2 Troubleshooting Procedures

2.13 IEEE 1394 Troubleshooting

START

Perform IEEE 1394 device check

(Procedure 1)

Is IEEE 1394 transmission ok?

Yes

Perform diagnostic check

(Procedure 2)

Was an IEEE 1394 p roblem detected?

Yes

Perform connection and replacem ent check

(Procedure 3)

Replace system board

IEEE 1394 port and

transmission are not

faulty. Contin ue

troubleshooting - refer

to Figure 2.1

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Figure 2-13 IEEE 1394 troubleshooting process

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2 Troubleshooting Procedures

To determine if the computer’s IEEE 1394 system is functioning properly, perform the following procedures. Figure 2-14 outlines the process. Start with Procedure 1 and continue with the other procedures as instructed.

Procedure 1: IEEE 1394 device check Procedure 2: Diagnostic check Procedure 3: Connection and replacement check

Procedure 1 IEEE 1394 device check

Connect an IEEE 1394 device to the computer’s IEEE 1394 port, then boot the computer for Windows XP. The computer should automatically detect the 1394 device. Check whether the device can transmit data to the computer. If the device is able to communicate with the computer, the problem may be intermittent or connections may be faulty. Go to Procedure 2. If communication is impaired, there may be a faulty connection. Go to Procedure 3.

Procedure 2 Diagnostic check

Run the Diagnostic Program, which will automatically execute the IEEE 1394 port test for transmission. Refer to Chapter 3, Tests and Diagnostics for more information on how to run the program. If an error is located, go to Procedure 3. If an error does not occur, the 1394 port is functioning properly.

Procedure 3 Connection and replacement check

The transmission cable may be damaged or the connections may be loose. Perform Check 1: Check 1 Make sure the transmission cable is firmly plugged into both the IEEE 1394-

compatible device and the IEEE 1394 port of the computer. If the cable is connected correctly, go to Check 2.

Check 2 Make sure the IEEE 1394 port is firmly secured to the system board of the computer.

If the malfunction persists, go to Check 3.

Check 3 The transmission cable may be damaged. Replace with a good cable. If the

malfunction persists, go to Check 4

Check 4 The system board may be damaged. Replace it with a new one following the

instructions in Chapter 4.

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2 Troubleshooting Procedures

2.14 Wireless LAN Troubleshooting

START

Perform diagnostic test

(Procedure 1)

Wireless LAN system

Was a wireless LAN problem delected?

is not faulty. Continue troubleshooting - refer

to Figure 2.1

Yes

Perform connector and replacement check

(Procedure 2)

Replace wireless LAN antenna/unit

Replace system board

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Figure 2-14 Wireless LAN troubleshooting process

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2 Troubleshooting Procedures

The wireless LAN antenna wire, wireless LAN unit or system board may each be the source of a wireless LAN fault. Any of these components may be damaged. To determine if the computer’s wireless LAN system is functioning properly, perform the following procedures. Figure 2-15 outlines the process. Start with Procedure 1 and continue with the other procedures as instructed.

Procedure 1: Diagnostic test Procedure 2: Connector and replacement check

Procedure 1 Diagnostic test

Run the Diagnostic Program, which will automatically execute the wireless LAN test. Refer to Chapter 3, Tests and Diagnostics for more information on the program. If an error is located, go to Procedure 2. If an error is not located, the wireless LAN system is functioning properly.

Procedure 2 Connector and replacement check

The wireless LAN antenna, wireless LAN unit or system board may be disconnected or damaged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures, and perform the following checks.

Check 1 Make sure that the wireless LAN antenna is firmly connected to the wireless LAN

unit (refer to Chapter 4 for instructions) and that the wireless LAN unit is securely slotted into the system board. If the problem persists, go to Check 2.

Check 2 Check that the wireless communication switch is turned to “On”, then make sure that

the wireless communication LED on the front panel is lit. If the LED is lit but the wireless LAN function is still faulty, the antenna may be damaged. Replace with a new antenna following the steps in Chapter 4, Replacement Procedures. If the problem persists, or if the wireless LAN LED is not lit when the wireless communication switch is turned to “On”, go to Check 3.

Check 3 The wireless LAN unit may be damaged. Replace it with a new one following the

instructions in Chapter 4. If the problem still exists, perform Check 4.

Check 4 The system board may be damaged. Replace it with a new one following the

instructions in Chapter 4.

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Chapter 3 Tests and Diagnostics

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3. Tests and Diagnostics

3 Contents

Chapter 3 Contents

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...............................................................................................................3-8

3.5 Speaker Audio Test..........................................................................................................3-9

3.6 Fan ON/OFF Test...........................................................................................................3-10

3.7 Main Battery Charge Test ..............................................................................................3-11

3.8 FDD Test........................................................................................................................3-12

3.9 CD-ROM Test................................................................................................................3-13

3.10 Keyboard Test ................................................................................................................3-14

3.11 Mouse (Pad) Test ...........................................................................................................3-16

3.12 LCD Pixels Mode Test...................................................................................................3-18

3.13 Magnetic Switch Test.....................................................................................................3-19

3.14 HDD R/W Test...............................................................................................................3-20

3.15 LAN Test........................................................................................................................3-22

3.16 RTC Test ........................................................................................................................3-24

3.17 Read 1394 GUID.............................................................................................................3-25

3.18 CD Control Button Test ..................................................................................................3-26

3.19 Speaker EQ Type Check&Re-Write ................................................................................3-28

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3.1 The Diagnostic Test

This chapter explains how to use the Test & Diagnostic program to test the functions of the (Base on Boston T&D version 1.0) hardware modules. The Test & Diagnostic Program is stored on the T&D diskettes. The program consists of a series of tests that run automatically when the Diagnostics Program items are selected and executed.

NOTES: To start the diagnostics, follow these steps

1. Check all cables for loose connections.

2. Exit this program when you are at Main Menu.

The TEST & DIAGNOSTIC PROGRAM contains the following functional tests:

 CONFIG CHECK TEST  DMI CHECK TEST  SPEAKER AUDIO TEST  FAN ON/OFF TEST  MAIN BATTERY CHARGE TEST  FDD TEST  CD-ROM TEST  KEYBOARD TEST  MOUSE(PAD) TEST  LCD PIXELS MODE TEST  MAGNETIC SWITCH TEST  HDD R/W TEST  LAN TEST  RTC TEST  IEEE1394 CODE TEST  Speaker EQ Check&Rewrite  BUTTON TEST

You will need the following equipment to perform some of the Diagnostic test programs.

 The diagnostics diskette (2 pcs)  A formatted working diskette for the floppy disk drive test (Floppy Disk Drive Test)  A data CD disc (CD-ROM Test)  A LAN loopback connector (LAN Test)

The following sections explain how to execute the Test & Diagnostic Program and detail the tests within the program.

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3.2 Executing the Diagnostic Test

Toshiba MS-DOS is required to run the DIAGNOSTICS PROGRAM. To start the DIAGNOSTIC PROGRAM, follow these steps:

1. Insert the diagnostics diskette #1 in the floppy disk drive and turn on the computer. (The

diagnostics diskette contains the MS-DOS boot files.) And then follow the instructions to swap with the diagnostics diskette #2 for T&D program installed in RAM driver.

NOTE: To execute the CD test, make sure the CD is installed in the ODD drive.

The T&D Program can run by single test item when you press corresponsive English letter of test item, or run two or more test items what you like if you choose them by “Arrow cursors” and “Space Bar” – the wonderful thing is you can setup test loop by “Enter” button. And it also asks you if you like to copy test log file to diskette as reference at the end of test(s).

The test list is as the following:

A. CONFIG CHECK TEST B. DMI CHECK TEST C. SPEAKER AUDIO TEST D. FAN ON/OFF TEST E. MAIN BATTERY CHARGE TEST F. FDD TEST G. CD-ROM TEST H. KEYBOARD TEST I. MOUSE (PAD) TEST J. LCD PIXELS MODE TEST K. MAGNETIC SWITCH TEST L. HDD R/W TEST M. LAN TEST N. RTC TEST O. 1394 CODE TEST P. Speaker EQ Check&Rewrite Q. BUTTON TEST

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R. The below display will show up at the beginning of T&D program

If the test result passes, the following display will show up:

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If an error is detected and a test fails, the following message displays:

Then press any key for next actions – the below display presented if copying test log file onto diskette is necessary. This action will be executed when “Y” key pressed.

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It will skip this process if “N” key pressed.

And then it will check if it’s necessary to leave this program. Program will quit when “Y” key pressed and it will go back main menu for next test if “N” key pressed.

NOTE: Press Pause to pause a test and Enter to resume.

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3.3 Config Check Test

The config check test checks unit configuration. It includes:

 CPU type  System memory size  ODD type  LCD type  HDD type & capacity  VRAM size&VGA type  Battery type  Wireless type  LAN type  With/without Bluetooth

This test needs input unit Part Number by manual to make comparison with known SKU data.

NOTE: To execute this test, you must input unit Part Number as “Uppercase Character”.

Then it will show its configuration is correct (in green color) or failed (in red color). The screen should display as below, indicating whether the test is passed or failed after

comparison.

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3.4 DMI Check Test

This test will check if the computer’s Desktop Management Interface (DMI) is correct.

DMI includes:

 Manufacturer  Production Name  Version  Serial Number  UUID  OEM String

It needs to input unit Part Number by manual, then show this unit DMI information and makes comparison with SKU data.

NOTE: To execute this test, you must input unit Part Number as “Uppercase Character”.

The screen should display as below, indicating whether the test is passed or failed after comparison.

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3.5 Speaker Audio Test

The speaker audio test allows the user to aurally confirm the speaker functions. And check both speakers if they are OK within 3 times “Beep” sound generated.

NOTE: Remember to tune up the volume as “Maximum” before this test starts.

The screen should display as below, indicating whether the test is passed or failed after the question.

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3.6 Fan ON/OFF Test

The fan test allows the user to test aurally whether the fan is working. And follow the below procedures for this test:

 The computer will let the fan be “ON” after any key pressed. Listen to check

whether the fan is working.

NOTE: Remember to approach fan outlet that is near right side of unit whether fan is “ON”.

 The computer will stop the fan working after any key pressed. Listen to check if

the fan is “OFF” – it means no rotating sound.

The screen should display as below, indicating whether the test is passed or failed after the question.

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3.7 Main Battery Charge Test

NOTE: The AC adaptor (75W, 15V) should be connected to successfully run this test.

This test shows and measures the main battery:

 Battery type (Li_ion)  Manufacturer (Sony / Sanyo/Panasonic)  Remain charge capacity (0 ~ 100%)  Charge function (PASS/FAIL)

- “Battery Is Full” showed when “remain charge capacity” is 100%

The screen should display as below, indicating whether the test is passed or failed when finished.

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3.8 FDD Test

NOTE: Before running the FDD test, prepare a formatted work diskette (1.44 MB). Remove the diagnostics diskette and insert the work diskette into the FDD. The contents of the floppy diskette maybe erased.

The Floppy Disk Test includes three subtests of the:

1. Sequential seek/verify function (Range: Track 0 ~ 79)

2. Funnel code seek/verify function (Range: Track 0 ~ 79)

3. Write/Read/Compare pattern function (Range: Track 75 ~ 79)

NOTE: The write-protected device of this formatted diskette should be “Disable”.

The subtests run automatically.

NOTE: Press “Esc” key can skip the current subtest.

The screen should display as below, indicating whether the subtests pass or fail when finished.

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3.9 CD-ROM Test

The CD-ROM test allows a user to aurally confirm the CD-ROM functions.

NOTE: A CD disc (including data file) must be inserted into the CD-ROM drive before this test starts.

The CD-ROM test includes two subtests of the:

1. Random read/partial sequential read function

2. Sequential read function (for all surface)

Each item can be chosen by manual. When each test item finished, the CD-ROM tray will open. Check whether the tray can open automatically.

NOTE: Press “Esc” key can skip the current subtest.

The screen should display as below, indicating whether the subtests pass or fail when finished.

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3.10 Keyboard Test

The keyboard test checks the all keys function.

NOTE: The Num Lock and the Overlay mode must be off to execute the keyboard test.

Before keyboard test starts, the keyboard matrix code should be chosen as below display:

1. K (UK, for Europe)

2. S (US, for America)

When you execute this test, the keyboard layout is drawn on the display. When any key is pressed, the corresponding key on the screen changes to black as shown below.

It will indicate whether the subtest is passed or failed after the question.

NOTE: The “Fn” key cannot be tested in the keyboard test. To determine whether the “Fn” key is working correctly, press “Fn+F6 ” or “Fn+F7 ” keys to check if LCD display brightness change gradually.

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Pressing a key also reveals that key’s scan codes in the upper right hand corner of the screen. When the key is depressed, its make code is displayed. When the key is released, the break code is shown.

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3.11 Mouse (Pad) Test

The Mouse test allows the user to select and assign values to the following, using the Touch Pad or “Tab” key to move between selections:

1. Mouse Speed (on a scale from slow to fast)

2. Acceleration (Off, Low, Medium, High)

3. Button Assignments (Left + Right / Right button, either Unassigned or Drag

Lock)

4. Swap Buttons (Left /Right)

NOTE: The Touch Pad test cannot be used to test an external USB mouse.

The Touch Pad button subtest allows users to test their Touch Pad buttons. If the buttons are clicked, the cursors should appear in the corresponding box of the button figure that is displayed on the screen as below.

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After checking T/Pad buttons and cursor’s function, use “Tab” key or use T/Pad cursor to click the “OK” column will end this test.

It will indicate whether the subtests pass or fail after three questions.

NOTE: The above figure has three compartments although the Touch Pad installed may only have two buttons. In this case, the central compartment in the figure does not correspond to any button.

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3.12 LCD Pixels Mode Test

This LCD pixels mode test checks whether video display is fine. This test includes two modes of the test:

1. Text Mode

- including 40*25 (16 colors) and 80*25 (2/16colors).

2. VGA Mode

- including 320*200 (4/16/256 colors), 640*200 (2/16 colors), 640*350 (2/16 colors), 640*480 (2/16/256 colors), 800*600 (256 colors) and 1024*768 (256 colors).

The screen should display as below, indicating whether the test is passed or failed after the question.

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3.13 Magnetic Switch Test

The lid switch test checks the lid function of the unit. When LCD cover closed, the lid should enable to turn off the display.

NOTE: Remember to tune up the volume as “Maximum” before this test starts.

Follow below steps to run this test:

1. Close the LCD cover.

2. Heard 3 “Beep” sound happened during LCD closed.

3. Open the LCD.

Then it will indicate whether the test is passed or failed.

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3.14 HDD R/W Test

The HDD R/W test allows the user to test aurally HDD read/write function. For data security concern, it is necessary to input password - “hard disk” before HDD write test starts.

The HDD test includes three subtests of the:

1. Sequential read (all surface)

2. Sequential write (all surface)

3. Partial W/R + Random W/R

After the choice is made, HDD information will show as below:

 Model name  Firmware revision  Serial number  CHR (Cylinder High Register) mode – including cylinders, heads, sectors and sizes.  LBA (Logical Block Addressing) mode – including sectors and sizes.  Support Ultra DMA Mode  Support PIO Mode

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NOTE: Press “Ctrl + Break” keys can terminate the current subtest.

The screen should display as previous picture, indicating whether the subtest is passed or failed when finished.

NOTE: The AC adaptor should be connected to successfully run this test.

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3.15 LAN Test

The LAN test checks the Marvell chip.

NOTE: Don’t plug in LAN loopback while test.

And LAN information will show on the test screen:

 ASIC register Check:  MAC register check:  .PHY register check:  .PHY IRQ(PCI) check:  Check buffer RAM over register access:  Test Rate Control .

The LAN test includes three subtests of the:

1. Speed1000

- including ASIC Loopback (Speed=1000)

2. Speed100

- including ASIC Loopback (speed=100)

3. Speed 10

- including ASIC Loopback (Speed=10)

The subtests run automatically.

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The screen should display as below, indicating pass will go on to next test

FAIL as below

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3.16 RTC Test

Checks the computer’s RTC (Real Time Clock) and calendar functions by comparing the DOS and CMOS values.

The test runs automatically. The screen should display as below, indicating whether the test is passed or failed when finished.

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3.17 Read 1394 GUID

This test will check if the computer’s EEPROM 1394GUID code is correct.

NOTE: Must open the RAM D

oor to see RAM connector GUID bar code before test item

begins.

The figure below will be displayed:

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3. Tests and Diagnostics

3.18 CD Control Button Test

The CD control button test allows the user to manually test each of the five C

D control buttons. Key ”WWW” need to press first. One will hear one “bi” sound when press ”WWW” or “A Sound, a

nd continuously “bi” sound for another key test.

The CD control button type test includes three subtests of the:

1. 7 buttons (use 7 buttons test program

)

2. 3 buttons (use 7 buttons test program)

3. 1 button (don’t test the item)

For 7 button, The figure below will be displayed:

udio”

Press each of the buttons on the front panel in turn. A yellow bar will appear on the relevant

ection of the figure if the button passes the test.

or 3 button,The figure below will be displayed:

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Press each of the buttons on the front panel in turn. A yellow bar will appear on the relevant section of the figure if the button passes the test.

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3.19 Speaker EQ Type Check&Re-Write

This test will check if the computer’s EEPROM EQ type is correct. The EQ Type test includes two subtests of the:

1. Read EQ Type from EEPROM

2. Re-Write EQ Type to EEPROM

NOTE: To execute this test, you must select speaker type (Harman or No brand).

The figure below will be displayed:

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TECRA A5 Series Maintenance Manual

Toshiba tecra a5 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY PRECAUTIONS

Table of Contents

Chapter 1 Hardware Overview

Chapter 2 Troubleshooting Procedures

Chapter 3 Tests and Diagnostics

Chapter 4 Replacement Procedures

Appendices

1.1 Features

1.2 System Unit

1 Hardware Overview 1.3 2.5-inch Hard Disk Drive

1.4 Optical device Drives 1 Hardware Overview

1.4.1 DVD-ROM & CD-RW

1.4.2 DVD-ROM

1.4.3 DVD Super Multi Double Layer

1.5 Power Supply

1.6 Batteries

1.6.1 Main Battery

1.6.2 RTC battery

2.1 Troubleshooting Introduction

2.2 Troubleshooting Flowchart

2.3 Power Supply Troubleshooting

2.4 Display Troubleshooting

2.5 Keyboard Troubleshooting

2.6 External USB Devices Troubleshooting

2.7 TV-Out Failure Troubleshooting

2.8 TouchPad Troubleshooting

2.9 Speaker Troubleshooting

2.10 Optical Drive Troubleshooting

2.11 Modem Troubleshooting

2.13 IEEE 1394 Troubleshooting

2.14 Wireless LAN Troubleshooting

3.1 The Diagnostic Test

3.2 Executing the Diagnostic Test

3.3 Config Check Test

3.4 DMI Check Test

3.5 Speaker Audio Test

3.6 Fan ON/OFF Test

3.7 Main Battery Charge Test

3.8 FDD Test

3.9 CD-ROM Test

3.10 Keyboard Test

3.11 Mouse (Pad) Test

3.12 LCD Pixels Mode Test

3.13 Magnetic Switch Test

3.14 HDD R/W Test

3.15 LAN Test

3.16 RTC Test

3.17 Read 1394 GUID

3.18 CD Control Button Test

3.19 Speaker EQ Type Check&Re-Write