Toshiba libretto u100 Service Manual

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Toshiba Personal Computer

libretto U100

Maintenance Manual

TOSHIBA CORPORATION

File Number 960-520

[CONFIDENTIAL]

© 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 libretto U100 Maintenance Manual First edition April 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 libretto U100 at the time of this manual's production. However, succeeding computers and manuals are subject to change without notice. Therefore, Toshiba assumes no liability for damages incurred directly or indirectly from errors, omissions, or discrepancies between any succeeding product and this manual.

Trademarks

IBM is a registered trademark and IBM PC is a trademark of International Business Machines Corporation. Intel, Intel SpeedStep and Pentium are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries/regions. Windows and Microsoft are registered trademarks of Microsoft Corporation. Bluetooth is a trademark owned by its proprietor and used by TOSHIBA under license. OmniPass is the trademark of Softex Incorporated. Other trademarks and registered trademarks not listed above may be used in this manual.

ii [CONFIDENTIAL] libretto U100 Maintenance Manual (960-520)

Preface

This maintenance manual describes how to perform hardware service maintenance for the Toshiba Personal Computer libretto U100.

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.

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] iii

The manual is divided into the following parts:

Chapter 1 Hardware Overview describes the libretto U100 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  Display codes  Key layout  Wiring diagrams  BIOS Rewrite Procedures  EC/KBC Rewrite Procedures  Reliability

iv [CONFIDENTIAL] libretto U100 Maintenance Manual (960-520)

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 type face below:

Format complete System transferred

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] v

Chapter 1 Hardware Overview

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

1.2 USB 3.5-inch Floppy Disk Drive ...........................................................................1-10

1.3 1.8-inch Hard Disk Drive......................................................................................... 1-11

1.4 Optical Drive............................................................................................................ 1-13

1.5 Keyboard.................................................................................................................. 1-17

1.6 LCD Module............................................................................................................ 1-18

1.7 Power Supply...........................................................................................................1-19

1.8 Batteries ...................................................................................................................1-21

1.9 AC adapter...............................................................................................................1-23

Chapter 2 Troubleshooting Procedures

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

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

2.3 Power Supply Troubleshooting .................................................................................2-6

2.4 System Board Troubleshooting ...............................................................................2-17

2.5 USB FDD Troubleshooting ..................................................................................... 2-32

2.6 HDD Troubleshooting ............................................................................................. 2-35

2.7 Keyboard Troubleshooting ...................................................................................... 2-40

2.8 Display Troubleshooting..........................................................................................2-42

2.9 Accupoint Troubleshooting ..................................................................................... 2-45

2.10 Modem Troubleshooting.......................................................................................... 2-47

2.11 LAN Troubleshooting..............................................................................................2-49

2.12 Sound Troubleshooting............................................................................................2-51

2.13 Bluetooth Troubleshooting......................................................................................2-53

2.14 Wireless LAN Troubleshooting............................................................................... 2-56

2.15 SD Card Slot Troubleshooting................................................................................. 2-59

2.16 Fingerprint sensor Troubleshooting......................................................................... 2-60

2.17 libretto DVD Dock Troubleshooting....................................................................... 2-67

vi [CONFIDENTIAL] libretto U100 Maintenance Manual (960-520)

Chapter 3 Tests and Diagnostics

3.1 The Diagnostic Test................................................................................................... 3-1

3.2 Executing the Diagnostic Test...................................................................................3-4

3.3 Setting of the hardware configuration .......................................................................3-9

3.4 Heatrun Test.............................................................................................................3-12

3.5 Subtest Names.......................................................................................................... 3-13

3.6 System Test..............................................................................................................3-15

3.7 Memory Test............................................................................................................3-17

3.8 Keyboard Test..........................................................................................................3-18

3.9 Display Test.............................................................................................................3-19

3.10 Floppy Disk Test......................................................................................................3-22

3.11 Printer Test...............................................................................................................3-24

3.12 Async Test ...............................................................................................................3-26

3.13 Hard Disk Test......................................................................................................... 3-27

3.14 Real Timer Test........................................................................................................3-30

3.15 NDP Test.................................................................................................................. 3-32

3.16 Expansion Test.........................................................................................................3-33

3.17 CD-ROM/DVD-ROM Test .....................................................................................3-35

3.18 Error Code and Error Status Names.........................................................................3-36

3.19 Hard Disk Test Detail Status ...................................................................................3-39

3.20 ONLY ONE TEST................................................................................................... 3-41

3.21 Head Cleaning.......................................................................................................... 3-48

3.22 Log Utilities.............................................................................................................3-49

3.23 Running Test............................................................................................................3-51

3.24 Floppy Disk Drive Utilities......................................................................................3-52

3.25 System Configuration .............................................................................................. 3-57

3.26 Wireless LAN Test Program (Atheros) ...................................................................3-59

3.27 LAN/Modem/Bluetooth/IEEE1394 Test Program ..................................................3-66

3.28 Sound Test program.................................................................................................3-82

3.29 SETUP ..................................................................................................................... 3-88

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] vii

Chapter 4 Replacement Procedures

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

4.2 Battery pack............................................................................................................... 4-8

4.3 PC card/SD card....................................................................................................... 4-10

4.4 Memory module....................................................................................................... 4-12

4.5 Keyboard.................................................................................................................. 4-14

4.6 Top cover assembly ................................................................................................. 4-17

4.7 Bluetooth module..................................................................................................... 4-21

4.8 FP Board .................................................................................................................. 4-23

4.9 Accupoint.................................................................................................................4-24

4.10 MDC/SD board........................................................................................................ 4-26

4.11 Kill switch cover/Wireless LAN card......................................................................4-29

4.12 System board/DC-IN jack........................................................................................ 4-31

4.13 RTC battery.............................................................................................................. 4-34

4.14 Fan heat sink............................................................................................................ 4-36

4.15 HDD.........................................................................................................................4-38

4.16 LAN•Modem jack/DK board................................................................................... 4-42

4.17 PC board...................................................................................................................4-44

4.18 LCD mask/LCD unit/BL board ............................................................................... 4-45

4.19 Harness assembly/Hinge..........................................................................................4-50

4.20 libretto DVD Dock...................................................................................................4-56

viii [CONFIDENTIAL] libretto U100 Maintenance Manual (960-520)

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 Wiring Diagrams............................................................................................F-1

Appendix G BIOS Rewrite Procedures............................................................................. G-1

Appendix H EC/KBC Rewrite Procedures........................................................................ H-1

Appendix I Reliability........................................................................................................I-1

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] ix

x [CONFIDENTIAL] libretto U100 Maintenance Manual (960-520)

Chapter 1 Hardware Overview

[CONFIDENTIAL]

1 Hardware Overview

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1 Hardware Overview

Chapter 1 Contents

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

1.2 USB 3.5-inch Floppy Disk Drive ............................................................................1-10

1.3 1.8-inch Hard Disk Drive.........................................................................................1-11

1.4 Optical Drive............................................................................................................1-13

1.4.1 DVD-ROM & CD-R/RW Drive.........................................................1-13

1.4.2 DVD Super Multi Drive......................................................................1-15

1.5 Keyboard ..................................................................................................................1-17

1.6 LCD Module.............................................................................................................1-18

1.7 Power Supply............................................................................................................1-19

1.8 Batteries....................................................................................................................1-21

1.8.1 Main Battery .......................................................................................1-21

1.8.2 Battery Charging Control....................................................................1-22

1.8.3 RTC battery.........................................................................................1-22

1.9 AC adapter................................................................................................................1-23

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1 Hardware Overview

Figures

Figure 1-1 Front of the computer..................................................................................... 1-4

Figure 1-2 System unit configuration.............................................................................. 1-5

Figure 1-3 System unit block diagram............................................................................. 1-6

Figure 1-4 USB 3.5-inch FDD....................................................................................... 1-10

Figure 1-5 1.8-inch HDD...............................................................................................1-11

Figure 1-6 DVD-ROM & CD-R/RW drive...................................................................1-13

Figure 1-7 DVD Super multi drive................................................................................ 1-15

Tables

Table 1-1 USB 3.5-inch FDD specifications ...............................................................1-10

Table 1-2 1.8-inch HDD dimensions ........................................................................... 1-11

Table 1-3 1.8-inch HDD specifications........................................................................1-12

Table 1-4 DVD-ROM & CD-R/RW drive dimensions................................................1-13

Table 1-5 DVD-ROM & CD-R/RW drive specifications............................................1-14

Table 1-6 DVD Super multi drive dimensions.............................................................1-15

Table 1-7 DVD Super Multi drive specifications ........................................................1-16

Table 1-8 LCD module specifications.......................................................................... 1-18

Table 1-9 Power supply output rating..........................................................................1-19

Table 1-10 Battery specifications................................................................................... 1-21

Table 1-11 Time required for charges of main battery .................................................. 1-22

Table 1-12 RTC battery charging/data preservation time..............................................1-22

Table 1-13 AC adapter specifications............................................................................ 1-23

1-iv [CONFIDENTIAL] libretto U100 Maintenance Manual (960-520)

1.1 Features 1 Hardware Overview

1 Features

1.1 Features

The Toshiba libretto U100 Personal Computer uses extensive Large Scale Integration (LSI), and Complementary Metal-Oxide Semiconductor (CMOS) technology extensively to provide compact size, low power usage and high reliability. This computer incorporates the following features and benefits.

 Microprocessor

Intel Mobile Pentium-M

A 1.1/1.2GHz processor with a 400MHz external clock, 100MHz bus and

0.94/0.81V core operation.

 Chipset

The libretto U100 is equipped with Intel Montara-GM+ (855GME), Intel ICH4-M and Texas Instruments PCI7411.

 Cache Memory

64KB (32kB Code+32KB Data) primary cache (in CPU) and 2MB secondary cache (in CPU).

 Memory

One DDR SO-DIMM slot is available for installation of PC2700 compatible 256, 512MB or 1GB memory modules.

 VRAM

64MB VRAM in Montara-GM+ (855GME) (North Bridge).

 HDD

60GB internal drive of 1.8-inch, 8.0mm height or 30GB internal drive of 1.8-inch, 5.0mm height.

 USB FDD (option)

An optional USB FDD that supports 720KB/1.44MB format is prepared.

 libretto DVD Dock (option)

A 9.0mm height CD-R/RW & DVD-ROM or DVD Super-Multi Drive can be mounted in the optional libretto DVD Dock.

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] 1-1

1 Hardware Overview 1.1 Features

 Display

LCD

Built-in 7.2 inch, 16M colors, WXGA (1280×768 dots), thin type low temperature poly- silicon TFT color display. Video controller is included in North Bridge chip.

External monitor

Supported via an RGB connector.

 Keyboard

Keyboard has 82-key and supports Windows key.

 AccuPoint

AccuPoint with two buttons is installed as a pointing device.

 Batteries

The computer has two batteries: a rechargeable Lithium-Ion main battery pack (10.8V3400mAh) and Ni-MH RTC battery (2.4V-16mAH) (that backs up the Real Time Clock and CMOS memory).

 Universal Serial Bus (USB2.0)

Two USB ports are provided. The ports comply with the USB2.0 standard, which enables data transfer speeds 40 times faster than USB1.1 standard.

 PC card slot

A PC card slot (PCMCIA) accommodates one 5mm Type II card.

 SD card slot

A SD card slot can accommodate Secure Digital flash memory cards with various capacities.

 Sound system

The sound system is equipped with the following features:

•

AC 97 Link

•

Sound CODEC: STAC9750

•

Built in stereo speaker

•

Volume control knob

•

Stereo Headphone jack

•

External microphone jack

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1.1 Features 1 Hardware Overview

 Internal modem

The internal modem is equipped as a modem daughter card (MDC). The internal modem provides capability for data and fax communication and supports

V.90. For data reception it operates at 56,000bps and for data transmission it operates at 33,600bps. For fax transmission it operates at 14,400bps. The speed of data transfer and fax depends on analog telephone line conditions. It has an RJ11 modem jack for connecting to a telephone line.

 Internal LAN

The computer is equipped with LAN circuits that support Ethernet LAN (10 megabits per second, 10BASE-T) and Fast Ethernet LAN (100 megabits per second, 100 BASE-TX).

 Wireless LAN

The internal wireless LAN supports Mini PCI Type III (802.11b/g).

 Bluetooth

Bluetooth module can be equipped. This enables a communication to devices that support Bluetooth Version 1.2/2.0. Adopting AFH (Adaptive Frequency Hopping), reduce the interference with the wireless communication in 2.4GHz.

 Fingerprint sensor

The computer is equipped with a fingerprint sensor and fingerprint authentication utility. They enable only person who has registered his/her fingerprint to use the computer.

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] 1-3

1 Hardware Overview 1.1 Features

The front of the computer is shown in Figure 1-1.

Figure 1-1 Front of the computer

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1.1 Features 1 Hardware Overview

The system unit configuration is shown in Figure 1-2.

Figure 1-2 System unit configuration

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] 1-5

1 Hardware Overview 1.1 Features

Figure 1-3 is a block diagram of the system unit.

Figure 1-3 System unit block diagram

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1.1 Features 1 Hardware Overview

The system unit is composed of the following major components:  Processor

• A 1.1/1.2GHz Intel Mobile Pentium-M processor with a 400MHz external

clock, 100MHz bus and 0.94/0.81V core operation voltage (built-in NDP).

• Internal cache memory: 32KB Code and 32KB Data, Write-Back

• Secondary cache memory: 2MB (in CPU)

 Memory

One DDR SO-DIMM slot is available for installation of PC2700 compatible 256, 512MB and 1GB memory modules.

Memory

• DDR333

• 3.3V

Memory Module

• 200 pin, SO Dual In-line Memory Module (SO-DIMM)

• PC2700

• 256MB/512MB/1GB

 BIOS ROM (Flash memory)

• One STMicro M50FW080NB5G is used.

• 8Mbits of flash memory are used.

 PCI chipset

This gate array incorporates the following elements and functions

• North Bridge (Intel-made 855GME GMCH-M) – Memory controller : Support DDR 266/333, MAX:2048MB

– Built-in graphics controller – RGB, DVO Interface – AGP V2.0 ×4 mode – PCI R2.2 – ACPI 1.0b – Supports Geyserville III – Supports Intel SpeedStep technology

− 732-ball 37.5×37.5mm FC-BGA package

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] 1-7

1 Hardware Overview 1.1 Features

• South Bridge (Intel-made ICH4-M) – PCI 3.3V/5V Tolerance interface

– Provides Steerable PCI Interrupts for PCI device Plug-and-Play – Enhanced DMA Controller – Interrupt Controller – Count/Timer – Supports Distribute DMA – Supports PC/PCI DMA – Supports Serial IRQ – LPC host controller – Supports Plug and Play – ACPI supporting function – Built-in PCI IDE Controller – USB Interface (USB2.0 ports x6) – SMBus Interface – Super I/O Interface – Audio System – SW Modem Interface – 421-ball (31×31mm) BGA Package

 VGA Controller

64MB VRAM is incorporated in North Bridge

 PC card controller (Texas Instruments-made PCI7411)

•

PCI interface (PCI Revision2.2)

•

CardBus/PC Card controller (Yenta2 Version2.2) 1slot

•

SD/MMC card controller (SDHC Ver.1.2)

•

SD IO card controller (Ver.1.1)

•

Memory Stick/Memory Stick Pro Card Controller

•

xD Picture Card Controller

•

IEEE1394a Controller 2 port

•

BGA Package

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1.1 Features 1 Hardware Overview

 Other main system chips

•

EC/KBC (RENESAS M306KAFCLRP U0 x 1)

•

AXIS accelerometer (Hokuriku denki HAAM-302B)

•

Clock Generator (ICS 950812CGLFT)

•

PSC (TMP87PM48V01UG x 1)

•

Super I/O (SMSC LPC47N217-JV)

 Sound Controller

AC97 and CODEC (STAC9750) are used.

 Modem controller

Supported by MDC. Using of the secondary AC97 Line.

 Internal LAN Controller (Kinnereth 82562ET)

Controls LAN (Ethernet (10BASE-T) and Fast Ethernet (100BASE-TX)) and supports WOL. AOL is not supported.

 Wireless LAN

2.4GHz DSSS/OFDM, 5.0GHz OFDM wireless LAN card is equipped. Conformity with IEEE 802.11.

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] 1-9

1 Hardware Overview 1.2 USB 3.5-inch Floppy Disk Drive

1.2 USB 3.5-inch Floppy Disk Drive

The 3.5-inch USB FDD is a thin, high-performance reliable drive that supports 720KB and

1.44MB. The FDD is shown in figure 1-4. The specifications for the FDD are listed in Table 1-1.

Figure 1-4 USB 3.5-inch FDD

Table 1-1 USB 3.5-inch FDD specifications

Items 720KB mode 1.44MB mode

FDD part 250K bits/second 500K bits/second Data transfer

rate

Disk rotation speed 300rpm 360rpm Track density 5.3 track/mm (135TPI)

USB Full speed mode (12M bits/second)

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1.3 1.8-inch Hard Disk Drive 1 Hardware Overview

1.3 1.8-inch Hard Disk Drive

A compact, high-capacity HDD with a height of 5.0/8.0mm. Contains a 1.8-inch magnetic disk and magnetic heads.

Figure 1-5 shows a view of the 1.8-inch HDD and Tables 1-2 and 1-3 list the dimensions and specifications.

Figure 1-5 1.8-inch HDD

Table 1-2 1.8-inch HDD dimensions

Standard value

Parameter

Outline Width (mm) dimensions Height (mm) Depth (mm) Weight (g) 51max 62max

TOSHIBA

HDD1442BZK01

54.0±0.2

5.0±0.15 8.0±0.15

78.5±0.3

TOSHIBA

HDD1544BZK01

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] 1-11

1 Hardware Overview 1.3 1.8-inch Hard Disk Drive

Table 1-3 1.8-inch HDD specifications

Specification

Parameter

TOSHIBA

HDD1442BZK01

TOSHIBA

HDD1544BZK01

Storage size (formatted)

Speed (RPM) 4,200 Data transfer speed

(Mbits/s) Interface transfer

rate (Mbytes/s) Track density

Track/mm(TPI) Bit/mm(BPI)

Buffer size (Mbytes)

Start time (sec) 3.5 typical

30GB 60GB

131.1 to 283.3

100(Ultra DMA mode)

16.6(PIO mode)

4,704(119.5k)

31.8k(808k) max

2 2 or 8

20 max

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1.4 Optical Drive 1 Hardware Overview

1.4 Optical Drive

Optical drive is incorporated in the libretto DVD dock (option) and it is supported as a libretto DVD dock (option).

1.4.1 DVD-ROM & CD-R/RW Drive

The DVD-ROM & CD-R/RW drive accommodates either 12 cm (4.72-inch) or 8 cm (3.15inch) CD/DVD-ROM and CD-R/RW. It is a high-performance drive that reads DVD at maximum 8-speed and CD at maximum 24-speed.

The DVD-ROM & CD-R/RW drive is shown in Figure 1-6. The dimensions and specifications of the DVD-ROM & CD-R/RW drive are described in Table 1-4, Table 1-5.

Figure 1-6 DVD-ROM & CD-R/RW drive

Table 1-4 DVD-ROM & CD-R/RW drive dimensions

Parameter Standard value

MATSUSHITA

(G8CC00025110)

Outline dimensions

Maker Width (mm) 128

Height (mm) 9.5 (excluding projections) Depth (mm) 129.0

Mass (g) 141±3

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] 1-13

1 Hardware Overview 1.4 Optical Drive

Table 1-5 DVD-ROM & CD-R/RW drive specifications

Parameter

Data transfer

speed

Access time

(ms)

Buffer memory 2MB

Supported disk format

Drive Specification

MATSUSHITA (G8CC00025110)

Read

Write

ATAPI interface

CD-ROM 150 (Random)

DVD-ROM 170 (Random)

DVD

CD-DA, CD-ROM, CD-ROM XA, CD-R,CD-RW, Photo CD, Video CD, CD-Extra(CD+), CD-text

DVD-ROM, DVD-R (DVD-R Multi-boarder supported), DVD-RW(Ver.1.1), DVD-RAM(2.6GB/4.7GB), DVD+R, DVD+RW

DVD-ROM MAX 8x CAV (MAX 10800 KB/s)

CD-ROM MAX 24x CAV (MAX 3600 KB/s)

CD-R 4x/8x (CLV), 16x (PCAV), MAX24x (CAV)

CD-RW 4x(CLV)

High Speed CD-RW 4x/8x/10x (CLV)

Ultra Speed CD-RW 10x (CLV), MAX24x (CAV)

PIO mode16.6 MB/s PIO MODE4 supported

DMA mode16.6 MB/s Multi-word MODE2 supported

Ultra DMA mode 33.3 MB/s Ultra DMA MODE2

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1.4 Optical Drive 1 Hardware Overview

1.4.2 DVD Super Multi Drive

The DVD Super multi drive accommodates either 12 cm (4.72-inch) or 8 cm (3.15-inch) CD/DVD-ROM, CD-R/RW, DVD±R/±RW and DVD-RAM. It is a high-performance drive that reads DVD-ROM at maximum 8-speed and CD at maximum 24-speed. It writes CD at maximum 24-speed.

The DVD Super multi drive is shown in Figure 1-7. The dimensions and specifications of the DVD Super Multi drive are described in Table 1-6, Table 1-7.

Outline dimensions

Figure 1-7 DVD Super multi drive

Table 1-6 DVD Super multi drive dimensions

Parameter Standard value

Maker Width (mm) 128

Height (mm) 9.5 (excluding projections) Depth (mm) 129.0 Mass (g) 145±10

MATSUSHITA

(G8CC00026110)

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1 Hardware Overview 1.4 Optical Drive

Table 1-7 DVD Super Multi drive specifications

Parameter

Data transfer

speed

Access time

(ms)

Buffer memory 2MB

Supported disk format

Drive Specification

MATSUSHITA (G8CC00026110)

Read

Write

PIO mode 16.6 MB/s (PIO MODE4 supported)

ATAPI interface

CD-ROM 150 (Random)

DVD-ROM 180 (Random)

DVD

DMA mode 16.6 MB/s (Multi-ward MODE2 supported) Ultra DMA mode 33.3 MB/s(Ultra DMA MODE2 supported)

CD-DA, CD-ROM, CD-R, CD-RW, CD-ROM XA, Photo CD, Video-CD, CD-Extra(CD+),CD-text

DVD-ROM, DVD-R(3.9GB/4.7GB), DVD-RW (Ver1.1) DVD+R/+RW, DVD Video, DVD-RAM (2.6GB/4.7GB/9.4GB)

DVD-ROM MAX 8x CAV (MAX 10800 KB/s)

CD-ROM MAX 24x CAV (MAX 3600 KB/s)

CD-R 4x/8x (CLV), 12x/16x/24x (Zone CLV)

CD-RW 4x (CLV)

High Speed CD-RW 4x/8x/10x (CLV)

Ultra Speed CD-RW 8x/10x (CLV)

DVD-R 1x/2x (CLV)

DVD-RW 1x/2x (CLV)

DVD+R 2.4x (CLV)

DVD+RW 2.4x (CLV)

DVD-RAM 2x (ZCLV) (4.7GB/9.4GB)

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1.5 Keyboard 1 Hardware Overview

1.5 Keyboard

The keyboard is mounted 82 keys that consist of character key and control key. The keyboard is connected to membrane connector on the system board and controlled by the keyboard controller.

See Appendix E about a layout of the keyboard.

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1 Hardware Overview 1.6 LCD Module

1.6 LCD Module

The LCD module used for the TFT color display uses a backlight as the light source and can display images and characters of 16M colors with 1024×768 resolution. The video controller is incorporated into the North Bridge chip and can control both internal and external WXGAsupport displays simultaneously.

Table 1-8 lists the specifications of the LCD.

Table 1-8 LCD module specifications

Specifications Item

7.2-inch WXGA (G33C0002Q110)

Number of Dots 1280(W) × 768(H) Dot spacing (mm) 0.123(H) × 0.123(V) Display range (mm) 157.44(H) × 94.464(V) Outline dimensions 185.0(W) × 115.9(H) × 7.5Max(D)

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1.7 Power Supply 1 Hardware Overview

1.7 Power Supply

The power supply supplies different voltages to the system board. The power supply microcontroller has the following functions.

1. Judges that the DC power supply (AC adapter) is connected to the computer.

2. Detects DC output and circuit malfunctions.

3. Controls the battery icon, and DC IN icon.

4. Turns the battery charging system on and off and detects a fully charged battery.

5. Turns the power supply on and off.

6. Provides more accurate detection of a low battery.

7. Calculates the remaining battery capacity.

8. Controls the transmission of the status signal of the main battery.

The power supply output rating is specified in Table 1-9.

Table 1-9 Power supply output rating (1/2)

Name Voltage (V) Use

PPV 0.940 –0.81 PTV 1.05 1R8-P1V 1.8 1R35-P1V 1.35/1.2 A1R35-P1V 1.35/1.2 2R5-B2V 2.5 Q2R5-B2V 2.5 MR1R25-B1V 1.25 1R25M-B1V 1.25 1R5-S1V 1.5

CPU (VCC) CPU (VCCP), GMCH, ICH4-M CPU (VCCA0) GMCH (1.2V in power saving mode) GMCH (VCCASM) (1.2V in power saving mode) GMCH, DDR-SDRAM GMCH (VCCQSM) SO-DIM DDR-SDRAM (VREF), GMCH On Board DDR SDRAM (VREF)

ICH4-M S3V 3.3 M5V 5

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] 1-19

ICH4-M, EC/KBC

ICH4-M, Temperature reset IC, LEDs

1 Hardware Overview 1.7 Power Supply

Table 1-9 Power supply output rating (2/2)

Name Voltage (V) Use

MCV 5 E5V 5

E3V 3.3 SD-E3V 3.3

PHY-E3V 3.3 LAN-E3V 3.3 LAN1R5-

E1V MCVCCA-

EYV MCVPPA-

EYV R3V 2.0 – 3.5 1R25-P1V 1.25 1R5-P1V 1.5

P3V 3.3

1.5

3.3/5

PSC PC Card Power, USB Power PCI7411, 1394 EEPROM, PC/SD Card Power, Mini-PCI, MDC,

LAN Power SD Card PCI7411 (1394 OHCI) ICH4-M, LAN PHY, LAN LED ICH4-M

PCI7411, CardBus A (PC-Card)

CardBus A (PC-Card)

ICH4-M (VCCRTC), 32.768kHz DDR-SDRAM (Termination) GMCH (DVO), ICH4-M Clock Generator, Thermal Sensor, GMCH, SO-DIMM (SPD),

ICH4-M, HDD(1.8-inch), Mini-PCI, FWH, Accelerometer, Super I/O, FIR, AC97 Codec, HP Amp, HDD RESET

(Directly connected to E3V)

clock generator

P5V 5 BL-P5V 5 FS-P3V 3.3 VDDA-P3V 3.3 DDC-P5V 5 SND-P5V 5 A4R7-P4V 4.7 D-P5V 5 D-P3V 3.3 PNL-P3V 3.3 BT-P3V 3.3

ICH4-M, HDD, KB (LED), PAD, LEDs, RGB (DDC) Backlight LED Finger print sensor Finger print sensor CRT Speaker Amp AC97 Codec, Speaker Amp, MIC Amp DVD Dock DVD Dock LCD Bluetooth Module

1-20 [CONFIDENTIAL] libretto U100 Maintenance Manual (960-520)

1.8 Batteries 1 Hardware Overview

1.8 Batteries

The computer has two types of batteries as follows:

 Main battery pack  RTC battery

The battery specifications are listed in Table 1-10.

Table 1-10 Battery specifications

Battery name Material

G71C00054110

Main battery

G71C00054210

RTC battery P71035009115 Ni-MH 2.4V 16mAh

Lithium-Ion 6 Cell 10.8V 3,400mAh

Output

voltage

Capacity

1.8.1 Main Battery

The main battery is the primary power supply for the computer when the AC adapter is not connected. In stand-by (instant recovery) mode, the main battery maintains the current status of the computer.

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] 1-21

1 Hardware Overview 1.8 Batteries

1.8.2 Battery Charging Control

Battery charging is controlled by a power supply microprocessor. The power supply microprocessor controls power supply and detects a full charge when the AC adaptor and battery are connected to the computer. The system charges the battery using quick charge or trickle charge.

θ Quick Battery Charge

When the AC adapter is connected, normal charging is used while the system is turned on and quick charge is used while the system is turned off or in suspend mode. (See Table 1-11)

Table 1-11 Time required for charges of main battery

Normal charge About 3.0 to 8.5 or longer Quick charge About 3.0 hours

Charging Time

Quick battery charge is stopped in the following cases.

1. The main battery is fully charged.

2. The main battery is removed.

3. Main battery or AC adapter voltage is abnormal.

4. Charging current is abnormal.

θ Trickle charge

When the main battery is fully charged and the AC adapter is plugged in, the power supply microcontroller automatically switches from quick charge to trickle charge.

1.8.3 RTC Battery

The RTC battery provides the power supply to maintain the date, time, and other system information in memory. Table 1-12 lists the battery charging time and data preservation times.

Table 1-12 RTC battery charging/data preservation time

Time

Charging time

Data preservation time (when fully charged) 1 month

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AC adapter or main battery in use (Power ON)

8 hours (approx.)

1.9 AC Adapter 1 Hardware Overview

1.9 AC Adapter

The AC adapter is also used to charge the battery. Table 1-13 lists the AC adapter specifications.

Table 1-13 AC adapter specifications

Parameter

Power 45W 60W

Input voltage 100V to 240V

Input frequency 50Hz/60Hz

Input current 0.6A to1.1A 1.5A or less Output voltage DC 15V Output current 0A to 3.0A 0A to 4.0A

G71C0001A310 G71C0001A410 G71C0004A210

Specification

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] 1-23

1 Hardware Overview 1.9 AC Adapter

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Chapter 2 Troubleshooting Procedures

[CONFIDENTIAL]

2 Troubleshooting Procedures

2-ii [CONFIDENTIAL] libretto U100 Maintenance Manual (960-520)

2 Troubleshooting Procedures

Chapter 2 Contents

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

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

2.3 Power Supply Troubleshooting..................................................................................2-6

Procedure 1 Power supply icon Check.............................................................2-6

Procedure 2 Error Code Check ........................................................................2-8

Procedure 3 Connection Check......................................................................2-15

Procedure 4 Charge Check.............................................................................2-16

Procedure 5 Replacement Check....................................................................2-16

2.4 System Board Troubleshooting................................................................................2-17

Procedure 1 Message Check ..........................................................................2-18

Procedure 2 Debugging Port Check...............................................................2-20

Procedure 3 Diagnostic Test Program Execution Check ...............................2-30

Procedure 4 Replacement Check....................................................................2-31

2.5 USB FDD Troubleshooting......................................................................................2-32

Procedure 1 FDD Head Cleaning Check........................................................2-32

Procedure 2 Diagnostic Test Program Execution Check ...............................2-33

Procedure 3 Connector Check and Replacement Check................................2-34

2.6 HDD Troubleshooting..............................................................................................2-35

Procedure 1 Message Check ..........................................................................2-35

Procedure 2 Partition Check...........................................................................2-36

Procedure 3 Format Check.............................................................................2-37

Procedure 4 Diagnostic Test Program Execution Check ...............................2-38

Procedure 5 Connector Check and Replacement Check................................2-39

2.7 Keyboard Troubleshooting.......................................................................................2-40

Procedure 1 Diagnostic Test Program Execution Check ...............................2-40

Procedure 2 Connector and Replacement Check...........................................2-41

2.8 Display Troubleshooting..........................................................................................2-42

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] 2-iii

2 Troubleshooting Procedures

Procedure 1 External Monitor Check............................................................2-42

Procedure 2 Diagnostic Test Program Execution Check .............................. 2-42

Procedure 3 Connector and Cable Check...................................................... 2-43

Procedure 4 Replacement Check................................................................... 2-44

2.9 Accupoint Troubleshooting ..................................................................................... 2-45

Procedure 1 Diagnostic Test Program Execution Check .............................. 2-45

Procedure 2 Connector and Replacement Check .......................................... 2-46

2.10 Modem Troubleshooting.......................................................................................... 2-47

Procedure 1 Diagnostic Test Program Execution Check .............................. 2-47

Procedure 2 Connector Check and Replacement Check ............................... 2-48

2.11 LAN Troubleshooting..............................................................................................2-49

Procedure 1 Diagnostic Test Program Execution Check .............................. 2-49

Procedure 2 Connector Check and Replacement Check ............................... 2-49

2.12 Sound Troubleshooting............................................................................................2-51

Procedure 1 Diagnostic Test Program Execution Check .............................. 2-51

Procedure 2 Connector Check ....................................................................... 2-51

Procedure 3 Replacement Check................................................................... 2-52

2.13 Bluetooth Troubleshooting ...................................................................................... 2-53

Procedure 1 Transmitting-Receiving Check ................................................. 2-53

Procedure 2 Antenna Connection Check.......................................................2-54

Procedure 3 Replacement Check...................................................................2-55

2.14 Wireless LAN Troubleshooting............................................................................... 2-56

Procedure 1 Transmitting-Receiving Check ................................................. 2-56

Procedure 2 Antenna Connection Check.......................................................2-57

Procedure 3 Replacement Check...................................................................2-58

2.15 SD Card Slot Troubleshooting................................................................................. 2-59

Procedure 1 Check on Windows ................................................................... 2-59

Procedure 2 Connector Check and Replacement Check .............................. 2-59

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2 Troubleshooting Procedures

2.16 Fingerprint sensor Troubleshooting .........................................................................2-60

Procedure 1 Setting Windows Log-ON password ........................................2-60

Procedure 2 Registration of fingerprint..........................................................2-61

Procedure 3 Authentication of fingerprint .....................................................2-65

Procedure 4 Connector Check and Replacement Check................................2-66

2.17 libretto DVD Dock Troubleshooting........................................................................2-67

Procedure 1 Connector Check and Replacement Check................................2-67

Figures

Figure 2-1 Troubleshooting flowchart .............................................................................2-3

Figure 2-2 A set of tool for debug port test....................................................................2-20

Tables

Table 2-1 Battery Icon ....................................................................................................2-6

Table 2-2 DC IN icon .....................................................................................................2-7

Table 2-3 Error code .......................................................................................................2-9

Table 2-4 D port status.................................................................................................2-22

Table 2-5 FDD error code and status............................................................................2-33

Table 2-6 Hard disk drive error code and status...........................................................2-38

libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] 2-v

2 Troubleshooting Procedures

2-vi [CONFIDENTIAL] libretto U100 Maintenance Manual (960-520)

2.1 Troubleshooting 2 Troubleshooting Procedures

2.1 Troubleshooting

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. Power supply 6 Display 11. Bluetooth

2. System Board 7. Accuoint 12. Wireless LAN

3. USB FDD 8. Modem 13. SD Card Slot

4. 1.8” Hard Disk Drive 9. LAN 14. Fingerprint

5. Keyboard 10.Sound 15. libretto DVD Dock

The Detailed replacement procedures are given in Chapter 4. Test Program operations are described in Chapter 3.

The following tools are necessary for implementing the Diagnostics procedures:

1. Diagnostics Disk (Test program for maintenance)

2. Phillips screwdrivers

NOTE: Be sure to use the PH point size “0” screwdriver complying with the ISO/DIS

8764-1:1996.

3. Toshiba MS-DOS system FD

4. Work disk (for FDD testing)

5. Cleaning disk kit (for FDD head cleaning)

6. A set of tools for debug port test (test cable, test board, RS-232C cross cable, display,

D port FD)

7. PC with a serial port (for displaying debug port test result)

8. Wraparound connector for PC card

9. Tester

10. External Monitor

11. External USB Keyboard

12. External USB mouse

13. Headphone

14. Microphone

15. LAN wraparound connector

libretto U100 Maintenance Manual (960-52 0) [CONFIDENTIAL] 2-1

2 Troubleshooting Procedures 2.2 Troubleshooting Flowchart

2.2 Troubleshooting Flowchart

Use the flowchart in Figure 2-1 as a guide for determining which troubleshooting procedures to execute. Before going through the flowchart steps, verify the following:

 Ask user to enter the password if a password is registered.  Make sure that Toshiba Windows OS is installed on the hard disk. Non-Toshiba

operating systems can cause the computer malfunction.

 Make sure all optional equipment is removed from the computer.

2-2 [CONFIDENTIAL] libretto U100 Maintenance Manual (960-520)

2.2 Troubleshooting Flowchart 2 Troubleshooting Procedures

Figure 2-1 Troubleshooting flowchart (1/2)

libretto U100 Maintenance Manual (960-52 0) [CONFIDENTIAL] 2-3

2 Troubleshooting Procedures 2.2 Troubleshooting Flowchart

Figure 2-1 Troubleshooting flowchart (2/2)

2-4 [CONFIDENTIAL] libretto U100 Maintenance Manual (960-520)

2.2 Troubleshooting Flowchart 2 Troubleshooting Procedures

If the diagnostics program cannot detect an error, the problem may be intermittent. The Running Test program should be executed several times to isolate the problem. Check the Log Utilities function to confirm which diagnostic test detected an error, then perform the appropriate troubleshooting procedures as follows:

1. If an error is detected on the system test, memory test, real timer test, perform the

System Board and Processor Module Troubleshooting Procedures in Section 2.4.

2. If any trouble is detected on the floppy disk, perform the USB FDD Troubleshooting

Procedures in Section 2.5.

3. If any trouble is detected on the hard disk, perform the HDD Troubleshooting

Procedures in Section 2.6.

4. If any trouble is detected on the keyboard, perform the Keyboard Troubleshooting

Procedures in Section 2.7.

5. If any trouble is detected on the display, perform the Display Troubleshooting

Procedures in Section 2.8.

6. If any trouble is detected on the accupoint test, perform the accupoint

Troubleshooting Procedures in Section 2.9.

7. If any trouble is detected on the modem test, perform the Modem Troubleshooting

Procedures in Section 2.10.

8. If any trouble is detected on the LAN, perform the LAN Troubleshooting Procedures

in Section 2.11.

9. If any trouble is detected on the sound, perform the Sound Troubleshooting

Procedures in Section 2.12.

10. If any trouble is detected on the Bluetooth , perform the Bluetooth Troubleshooting

Procedures in Section 2.13.

11. If any trouble is detected on the Wireless LAN, perform the Wireless LAN

Troubleshooting Procedures in Section 2.14.

12. If any trouble is detected on the SD card, perform the SD card slot Troubleshooting

Procedures in Section 2.15.

13. If any trouble is detected on the fingerprint sensor, perform the Fingerprint

Troubleshooting Procedures in Section 2.16.

14. If any trouble is detected on the libretto DVD Dock, perform the libretto DVD Dock

Troubleshooting Procedures in Section 2.17.

libretto U100 Maintenance Manual (960-52 0) [CONFIDENTIAL] 2-5

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting

2.3 Power Supply Troubleshooting

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 procedures described in this section are:

Procedure 1: Power supply icon Check Procedure 2: Error Code Check Procedure 3: Connection Check Procedure 4: Charge Check Procedure 5: Replacement Check

Procedure 1 Power supply icon Check

The following Icons indicate the power supply status:

 Battery icon  DC IN icon

The power supply controller displays the power supply status through the Battery icon and the DC IN icon as listed in Table 2-1 and Table 2-2 below. To check the power supply status, install a battery pack and connect an AC adapter.

Table 2-1 Battery icon

Battery LED Power supply status

Lights orange Quick charge Lights green Battery is fully charged and AC adapter is connected. Blinks orange

(even intervals) Flashes orange Doesn’t light Any condition other than those above

The battery level becomes low while operating the computer on battery power.

The power switch is pressed on when the battery level is low.

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2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures

Table 2-2 DC IN icon

DC IN icon Power supply status

Lights green DC power is being supplied from the AC adapter. Blinks orange Power supply malfunction*1 Doesn’t light Any condition other than those above

*1 When the power supply controller detects a malfunction, the DC IN icon

blinks and an error code is displayed.

If the icon blinks, execute the followings:

1. Remove the battery and AC adapter to cut power supply to the computer.

2. Reinstall the battery and AC adapter. If the icon still blinks, perform the followings: Check 1 If the DC IN icon blinks orange, go to Procedure 2. Check 2 If the DC IN icon does not light green, go to Procedure 3. Check 3 If the battery icon does not light orange or green, go to Procedure 4.

libretto U100 Maintenance Manual (960-52 0) [CONFIDENTIAL] 2-7

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting

Procedure 2 Error Code Check

If the power supply microprocessor detects a malfunction, the DC IN icon blinks orange. The blink pattern indicates an error as shown below.

 Start Off for 2 seconds  Error code (8 bit)

“1” On for one second “0” On for a half second

Interval between data bits Off for a half second The error code begins with the least significant digit. Example: Error code = 11h (Error codes are given in hexadecimal format.)

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2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures

Check 1 Convert the DC IN icon blink pattern into the hexadecimal error code and

compare it to the tables below. The error code begins with the least significant digit. Error code

Table 2-3 Error code

Error code Where Error occurs

1*h DC Power (AC Adapter) 2*h 3*h 2 4*h S3V output (P60) 5*h 1R5-C1V out put (P61) 6*h 1R5-C1V out put (P62) 7*h PPV output (P63:CH0) 8*h PTV output (P64) 9*h E5V output (P65) A*h E3V output (P66) B*h PPV output (P63:CH1) C*h 1R35-P1V output (P73) D*h 1R25-P1V output (P75) E*h 2R5-B2V output (P77)

battery

F*h -

libretto U100 Maintenance Manual (960-52 0) [CONFIDENTIAL] 2-9

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting

Check 1 Compare the patterns in the hexadecimal error code to the tables below.

 DC power supply (AC adapter)

Error code Meaning

10h AC Adaptor output voltage is over 16.5 V. 11h Common Dock output voltage is over 16.5 V. 12h Current from DC power supply is over 4.50 A. 13h Current from DC power supply is over 0.5 A, when there is no load. 14h Current sensing IC is not normal.

 1st Battery

Error code Meaning

21h Main battery charge current is over 4.50 A. 22h Main battery discharge current is over 0.5A when there is no load.

 2nd Battery

Error code Meaning

 S3V output (P60)

Error code Meaning

23h Main battery charge current is over 2.7A when AC adapter is not

connected. 24h Current sensing IC is not normal. 25h Main battery charge current is over 0.3A.

31h Secondary battery charge current is over 4.50 A. 32h Secondary battery discharge current is over 0.5A when there is no

load. 33h Secondary battery charge current is over 2.7A when AC adapter is not

connected. 34h Current sensing IC is not normal. 35h Secondary battery charge current is over 0.3A.

40h S3V voltage is 2.81 V or under, when the computer is powered on/off. 45h S3V voltage is 2.81 V or under when the computer is booting up (CV

support).

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2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures

 1R5-C1V output (P61)

Error code Meaning

50h 1R5-C1V voltage is over 1.80 V, when the computer is powered on/off. 51h 1R5-C1V voltage is 1.275V or und er, when the computer is powered

on. 52h 1R5-C1V voltage is 1.275V or und er, when the computer is booting up. 53h 1R5-C1V voltage is 1.275V or und er, when the computer is

suspended. 54h 1R5-C1V voltage is not normal, when the computer i s shutdown (CV

support). 55h 1R5-C1V voltage is 1.275V or under whe n the computer is booting up

(CV support).

 1R5-C1V output (P62)

Error code Meaning

60h 1R5-C1V voltage is over 1.80 V, when the computer is powered on/off. 61h 1R5-C1V voltage is 1.275V or und er, when the computer is powered

on. 62h 1R5-C1V voltage is 1.275V or und er, when the computer is booting up. 63h 1R5-C1V voltage is 1.275V or und er, when the computer is

suspended. 64h 1R5-C1V voltage is not normal, when the computer i s shutdown (CV

support). 65h 1R5-C1V voltage is 1.275V or under whe n the computer is booting up

(CV support).

 PPV output (P63:MUX_CH1)

Error code Meaning

70h PPV voltage is over 1.80 V, when the computer is powered on/off. 71h PPV voltage is 0.56 V or under, when the computer is powered on. 72h PPV voltage is 0.56 V or under, when the computer is booting up. 73h PPV voltage is 0.56 V or over, when the computer is powered off.

libretto U100 Maintenance Manual (960-52 0) [CONFIDENTIAL] 2-11

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting

 PTV output (P64)

Error code Meaning

80h PTV voltage is over 1.26 V, when the computer is powered on/off. 81h PTV voltage is 0.68 V or under, when the computer is powered on. 82h PTV voltage is 0.68 V or under, when the computer is booting up. 83h PTV voltage is 0.68 V or over, when the computer is powered off. 84h PTV voltage is 0.68 V or under, when the computer is suspended.

 E5V output (P65)

Error code Meaning

90h E5V voltage is over 6.00V, when the computer is powered on/off. 91h E5V voltage is 4.50 V or under, when the computer is powered on. 92h E5V voltage is 4.50 V or under, when the computer is booting up. 93h E5V voltage is 4.50 V or over, when the computer is powered off. 94h E5V voltage is 4.50 V or under, when the computer is suspended.

 E3V output (P66)

Error code Meaning

A0h E3V voltage is over 3.96 V, when the computer is powered on/off. A1h E3V voltage is 2.81 V or under, when the computer is powered on. A2h E3V voltage is 2 .81 V or under, when the computer is booting up. A3h E3V voltage is 2.81 V or over, when the computer is powered off. A4h E3V voltage is 2.81 V or under when the computer is suspended.

 PPV output (P63:CH1)

Error code Meaning

B0h PPV voltage is over 1.80 V, when the computer is powered on/off. B1h PPV voltage is 0.56 V or under, when the computer is powered on. B2h PPV voltage is 0.56 V or under, when the computer is booting up. B3h PPV voltage is 0.56 V or over, when the computer is powered off.

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2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures

 1R35-P1V output (P73)

Error code Meaning

C0h 1R35-P1V voltage is over 1.62V, when the computer is powered

on/off.

C1h 1R35-P1V voltage is 0.68 V or under, when the computer is powered

on.

C2h 1R35-P1V voltage is 0.68 V or under, when the computer is booting

up.

C3h 1R35-P1V voltage is 0.68 V or over, when the computer is powered

off.

C4h 1R35-P1V voltage is 0.68 V or under, when the computer is

suspended.

 1R25-P1V output (P75)

Error code Meaning

D0h 1R25-P1V voltage is over 1.50 V, when the computer is powered

D1h 1R25-P1V voltage is 1.063 V or under, when the computer is powered

D2h 1R25-P1V voltage 1.063 V or under, when the computer is booting up. D3h 1R25-P1V voltage is 1.063 V or over, when the computer is powered

D4h 1R25-P1V voltage is 1.063 V or under, when the computer is

 2R5-B2V output (P77)

Error code Meaning

E0h 2R5-B2V voltage is over 3.00 V, when the computer is powered on/off. E1h 2R5-B2V voltage is 2.125 V or under, when the computer is powered

E2h 2R5-B2V voltage is 2.125V or under, when the computer is booting up. E3h 2R5-B2V voltage is 2.125 V or over, when the computer is powered

on/off.

on.

off.

suspended.

on.

off.

E4h 2R5-B2V voltage is 2.125 V or under when the computer is

suspended.

libretto U100 Maintenance Manual (960-52 0) [CONFIDENTIAL] 2-13

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting

Check 2 In the case of error code 10h or 12h:

 Make sure the AC adaptor cord and AC power cord are firmly plugged into

the DC IN 15 V socket and wall outlet. If the cables are connected correctly, go to the following step:

 Connect a new AC adaptor and/or AC power cord, if necessary. If the error

still exists, go to Procedure 5.

Check 3 In the case of error code 2Xh:

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

pack is correctly installed, go to Procedure 5.

Check 4 For any other error, go to Procedure 5.

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2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures

Procedure 3 Connection Check

The power is supplied as shown below:

Any of the connectors may be disconnected. Perform Check 1. Check 1 Disconnect the AC power cord from the 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 15 V socket and AC adaptor inlet/wall outlet, respectively. If these cables are connected correctly, go to Check 3.

Check 3 Make sure the DC IN input port where an AC adapter’s DC output plug is

connected is firmly secured to the system board.

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

• If it is not loose, go to Check 4.

Check 4 Make sure the battery pack is installed in the computer correctly. If the battery is

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

libretto U100 Maintenance Manual (960-52 0) [CONFIDENTIAL] 2-15

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting

Procedure 4 Charge Check

Check if the power supply controller charges the battery pack properly. Perform the following procedures:

Check 1 Make sure the AC adapter is firmly plugged into the DC IN socket. Check 2 Make sure the battery pack is properly installed. If the battery is properly

installed, go to Check 3.

Check 3 The battery pack may be completely discharged. Wait a few minutes to charge the

battery pack while connecting the battery pack and the AC adapter. If the battery pack is still not charged, go to Check 4.

Check 4 The battery’s temperature is too high or low. Return the temperature to normal

operating condition. If the battery pack is still not charged, go to Check 5.

Check 5 Replace the battery pack with a new one. If the battery pack is still not charged,

go to Procedure 5.

Procedure 5 Replacement Check

The AC adapter supplies the power to the System board. If either the AC adapter or the System board was damaged, perform the following Checks.

To disassemble the computer, follow the steps described in Chapter 4. When AC adapter is connected: Check 1 AC adapter may be faulty. Replace the AC adapter with a new one. If the problem

still occurs, perform Check 2.

Check 2 DC-IN harness may be faulty. Replace the DC-IN harness with a new one. If the

problem still occurs, perform Check 3. Check 3 System board may be faulty. Replace the System board with a new one. When AC adapter is not connected:

(When driving with battery pack) Check 1 Battery pack may be faulty. Replace it with a new one. If the problem still occurs,

perform Check 2. Check 2 System board may be faulty. Replace the System board with a new one.

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

2.4 System Board Troubleshooting

This section describes how to determine if the System board is defective or not. Start with Procedure 1 and continue with the other procedures as instructed. The procedures described in this section are:

Procedure 1: Message Check Procedure 2: Debugging Port Check Procedure 3: Diagnostic Test Program Execution Check Procedure 4: Replacement Check

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

Procedure 1 Message Check

When the power is turned on, the system performs the Initial Reliability Test (IRT) installed in the BIOS ROM. The IRT tests each IC on the System board and initializes it.

 If an error message is shown on the display, perform Check 1.  If there is no error message, go to Procedure 2.  If MS-DOS or Windows OS is properly loaded, go to Procedure 4.

Check 1 If one of the following error messages is displayed on the screen, press the F1 key

as the message instructs. These errors occur when the system configuration

preserved in the RTC memory (CMOS type memory) is not the same as the actual

configuration or when the data is lost.

If you press the F1 key as the message instructs, the SETUP screen appears to set

the system configuration. If any other error message is displayed, perform Check

(a)*** Bad HDD type ***

Check system. Then press [F1] key ......

(b)*** Bad configuration ***

Check system. Then press [F1] key ......

(c)*** Bad memory size ***

Check system. Then press [F1] key ......

(d)*** Bad time function ***

Check system. Then press [F1] key ......

(e)*** Bad check sum (CMOS) ***

Check system. Then press [F1] key ......

(f)*** Bad check sum (ROM) ***

Check system. Then press [F1] key ......

(g)RTC battery is low or CMOS checksum is inconsistent Press [F1] key to set Date/Time

Check 2 If the following error message is displayed on the screen, press any key as the

message instructs.

The following error message appears when data stored in RAM under the resume

function is lost because the battery has become discharged or the System board is

damaged. Go to Procedure 3.

WARNING: RESUME FAILURE. PRESS ANY KEY TO CONTINUE.

If any other error message is displayed, perform Check 3.

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

Check 3 The IRT checks the System board. When the IRT detects an error, the system

stops or an error message appears. If one of the following error messages (1) through (17), (22) or (23) is displayed,

go to Procedure 4. If error message (18) is displayed, go to the Keyboard Troubleshooting

Procedures in Section 2.7. If error message (19), (20) or (21) is displayed, go to the HDD Troubleshooting

Procedures in Section 2.6.

(1) PIT ERROR (2) MEMORY REFRESH ERROR (3) TIMER CH.2 OUT ERROR (4) CMOS CHECKSUM ERROR (5) CMOS BAD BATTERY ERROR (6) FIRST 64KB MEMORY ERROR (7) FIRST 64KB MEMORY PARITY ERROR (8) VRAM ERROR (9) SYSTEM MEMORY ERROR (10) SYSTEM MEMORY PARITY ERROR (11) EXTENDED MEMORY ERROR (12) EXTENDED MEMORY PARITY ERROR (13) DMA PAGE REGISTER ERROR (14) DMAC #1 ERROR (15) DMAC #2 ERROR (16) PIC #1 ERROR (17) PIC #2 ERROR (18) KBC ERROR (19) HDC ERROR (20) HDD #0 ERROR (21) HDD #1 ERROR (22) TIMER INTERRUPT ERROR (23) RTC UPDATE ERROR

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

Procedure 2 Debugging Port Check

Check the D port status by a debug port test. The tool for debug port test is shown below.

Figure 2-2 A set of tool for debug port test

The test procedures are follows;

1. Connect the debug test cable to the connector CN3400 of the System board. For

disassembling to connect the test cable, refer to Chapter 4.

2. Connect the debug port test cable and RS-232C cross-cable to the test board.

3. Connect the RS-232C cross-cable to the PC that displays the results.

4. Boot the computer in MS-DOS mode.

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

5. Execute GETDPORT.COM in the text menu in CPU REAL mode. (Insert the FD for

starting D port into FDD and input “FD starting drive:>dport”.) The D port status is displayed in the following form;

6. When the D port status is FFFFh (normal status), go to Procedure 3.

7. When the D port status falls into any status in Table 2-4, execute Check 1.

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

Table 2-4 D port status (1/8)

D port Status Test item Message

Permission of A20 line and Clearance of software reset

Prohibition of APIC Initialization for MCH Initialization for ICHM Initialization for Super I/O Initialization for Debug port Dummy read of 3 Setting of printer port (model supporting printer)

Bus data

F000H

Check sum check

F001H EC/KBC rewrite check

F002H BIOS rewrite request check

F003H

Rewriting BIOS

Initialization of only PIT CH0 (for HOLD_ON) BIOS rewrite flag initialization Check sum check Transition to protected mode

Boot block checksum (Skip when S3 is returned) (HLT when checksum error occurred) Checksum Except Boot block (Skip when S3 is

returned)

EC/KBC rewrite check Transition to BIOS rewriting when required Transits the process to System BIOS IRT side when S3

returned. Key input

When a key is pressed, check if it is Tilde key or Tab

key. BIOS rewrite request check

When checksum error other than in Boot Block is detected or key rewriting is requested, go to BIOS rewrite process

Transits the process to System BIOS IRT. Initialization for CH.D31 Configuration of DRAM Permission of cache (only L1 cache) Memory Clear Shifts to real mode and copies BIOS on RAM.

F004H -

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

Table 2-4 D port status (2/8)

D port Status Test item Message

F005H Stores key scan code.

Setting of TASK_1ms_TSC FAN control Sound controller initialization (for beep)

Enabling system speaker Releasing mute Sets the volume maximum. (models that can control volume)

BIOS, EC/KBC rewrite request (Flashing green 2s period (On:1s,Off:1s))

BIOS ROM fault (Flashing orange 2s period (On:1s,Off:1s))

Key input Prohibition of USB

Beeping. Waiting for key input

Reading CHGBIOSA.EXE/CHGFIRMA.EXE FDC reset

Setting of parameter for 2HD (1.44MB) Reading first sector When it is 2HD (1.44MB), media is defined. Setting of parameter for 2DD (720KB) Search of CHGBIOSA.EXE from route directory Calculation of directory start head, sector Reading contents of route directory by one sector Search of entry for "CHGBIOSA.EXE" from the sector read Reading of EXE header of "CHGBIOSA.EXE" when an error occurred, to key input Execute "CHGBIOSA.EXE"/"CHGFIRMA.EXE"

F100H Prohibition of cache

Permission of L1/L2 cache (Flash ROM area) Initialization for H/W (before recognition of DRAM)

Initialization of MCHM Initialization of ICH4M.D31.Func0 Initialization of ICH4M.D31.Func1 Initialization of ICH4M.D31.Func1/2 Initialization of USB Function0,1,2,7 Initialization of ICH4M.D31.Func3 Initialization of ICH4M D31 Func5 Initialization of TI Controller PIT CH1 initialization (Setting refresh interval to 30ms)

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

Table 2-4 D port status (3/8)

D port Status Test item Message

F101H

Check of DRAM type and size

SM-RAM stack area test Tests the stuck area of SM-RAM. HLT when it can not

Check of DRAM type and size (in Cold boot) When not-supported memory is connected, HLT after beeping.

HLT when DRAM size is 0 Memory test of UMA area (when Diagnostic mode is permitted.)

Memory check of SRAM area ( when Diagnostic Mode is permitted.)

used for stuck.

F102H

F103H

F17AH F173H

F179H

F176H Checksum check of PnP RAM Resume error F177H

Cache configuration

Cache permission (L1/L2 cache)

CMOS access test

CMOS checksum check

CMOS access test (in Cold Boot) (HLT when an error is detected.)

Battery level check of CMOS CMOS checksum check

Initialization of CMOS data (1) Setting of IRT status (Boot status and IRT busy flag, the

remaining bit is 0.) Storing DRAM size

Resume branch (in Cold Boot) Not resume when a CMOS error occurred. Not resume when resume status code is not set. Resume error check S3 returning error (1CH) Resume error

SM-RAM checksum check Resume error Check of memory configuration change

Resume error

Checksum check of RAM area of system BIOS

Resume error

Checksum check of expansion memory

Resume error)

Transition to RESUME-MAIN Resume error process Reset of CPU clock to “low” Prohibition of all SMI Clearance of resume status Returning to ROM Turning area of C0000h to EFFFFh to PCI (Prohibition

of DRAM) Setting of resume error request Copying ROM/RAM of system BIOS (HLT at error)

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

Table 2-4 D port status (4/8)

D port Status Test item Message

F104H Initialization of SMRAM

Check of Wake Up factor Rewriting of SMRAM base and storing CPU state map

for BIOS Permission only SMI by ASMI

F105H

Initialization of devices which need initialization before initialization of PCI bus

PIT test (in the Cold Boot) and initialization Setting of test pattern for CH0 of PIT#0 Checks whether the test pattern set can be read. Initialization of PIT CH0 (Setting of timer interrupt

interval to 55ms)

Initialization of PIT CH2 (Setting of sound generator

frequency to 664Hz)

Test of PIT CH1 (Checks whether a refresh signal is

working properly when refresh interval is set to 30ms. HLT when the time is out.)

Test of PIT CH2 (Checks whether the speaker gate

is working properly.) Measuring of CPU clock Checks parameter block A. Permits SMI except auto-off function Process for default setting of CMOS Judge of destination (domestic or overseas) Judge of panel type / size Control of over rating of input voltage Control of battery discharge current (1CmA) Control of over current rated of AC adapter Division process for time measuring of IRT Setting for clock generator CPU initialization Update of micro code Judgement of CPU type Check of Geyserville support Setting of CPU clock to “high” Setting of Graphics Aperture Size (VGA_BUS_0)

F106H Storing memory configuration in buffer

Reading EC version Update of flash ROM type Initialization of ACPI table (for executing an option ROM)

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

Table 2-4 D port status (5/8)

LED Status Test item Message

(F106H) Initialization of a device that needs initialization before

PCI bus initialization Setting of AC’97

Initialization of temperature control information KBC initialization

VGA display off and reset control (Starts returning

VGA.) Control of permission/prohibition of interval LAN Sound initialization Acquisition of multi box status Initialization of HC and recognition of device PIC initialization

PIC test Password initialization

F107H PCI Bus initialization (connection of DS Bus)

Initialization of LAN information Check of Wakeup factor

F108H Running a task waiting for the completion of INIT PCI

Initialization of SVP (models supporting SVP) CMOS data initialization (2) PnP initialization Setting of setup item Waiting for completion of Multibox status check (model

supporting select bay) Setting of HW from resource

F109H

Running a task waiting for the end of PnP resource Serial interrupt control (executes before using interrupt)

(model supporting YEBISU) Initialization of H/W related to PnP

Initialization of PC card slot Initialization of SIO (model supporting SIO) Initialization of FIR (model supporting FIR)

PCI automatic configuration Creating a work area for auto configuration

Acquisition of PCIIRQ Configuration Storing the results of VGA configuration

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

Table 2-4 D port status (6/8)

LED Status Test item Message

F10AH Running a task waiting for the completion of

PCI_CONFIGURATION Initialization of H/W that is necessary after PCI

configuration Setting of printer port (model supporting PRT)

Initialization of HDD sequence start Initialization of FDD sequence start (Internal FDD

model) Enabling power off Creating output code

F10BH F10CH F10DH F10EH INIT_SYSTEM (System initialization)

F10FH INIT_DISPLAY (Waiting for VGA chip initialization, VGA

F110H Calling VGA BIOS F112H DISP_LOGO (LOGO display) (not display when

F113H SYS_MEM_CHECK (Conventional memory check)

F114H EXT_MEM_CHECK (Check of exceptional cases in

F115H (DPORT=F116H when error occurs error in the

F117H CHK_DMA_PAGE (Check of DMA Page Register )(Boot)

FIRST_64KB_CHECK (Check memory of first 64KB) INIT_INT_VECTOR (Vector initialization) INIT_DNP (NDP initialization)

Storing CMOS error status in IRT_ERR_STS_BUF Control of CD POWER SW (CD play supporting model) Start of TIMER initialization Initialization of EC and reading battery information

Update of system BIOS (EDID of the LCD)

BIOS Initialization) Waiting for VGA power on

Waiting for completion of display access

Diagnostic Mode is not permitted.)

(Boot)

protected mode) (Boot)

exceptional check in protected mode.) INT_SYS _ MEM (Conventional memory initialization) (Reboot)

F118H CHECK_DMAC (Check of DMAC) (Boot) F119H INIT_DMAC (DMAC initialization) (Boot) F11AH CHECK_PRT (Check of printer port existence) (model

supporting PRT)

F11BH CHECK_SIO (Check of SIO) (model supporting SIO)

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

Table 2-4 D port status (7/8)

LED Status Test item Message

F11CH BOOT_PASSW

F11DH EX_IO_ROM_CHECK (Option I/O ROM check) F11EH

BOOT_PASSWORD (Password check) Waiting for completion of FDD initialization ( model with

Internal FDD) (Reboot) Waiting for completion of HDD initialization Check of key input during IRT (waiting for completion

of KBC initialization) I/O LOCK process (model supporting I/O LOCK) Initialization of ATA priority (Boot) Loading process of BM (model supporting finger print

Authentication) Initialization of BM (model supporting finger print Authentication) Check of key input during IRT (waiting for completion

of KBC initialization) Input of password (Waiting for completion of HDD

initialization) I/O LOCK process (model supporting I/O LOCK) Releasing of BM (model supporting finger print

Authentication)

PRE_BOOT_SETUP Storing the value of 40:00h (for SIO save/restore) Setting Font address for resume password Setting parameter for character repeat on a USB

keyboard Final check key input during the IRT Storing T_SHADO_RAM_SIZE Update of system resources information just before

booting Rewriting of memory map data of INT15h E820h

function Waiting for AC-Link initialization completion Updating a table for DMI Setting parts information (model supporting parts

information) Copying an ACPI table to the top of an expansion

memory Waiting for the completion of writing PSC version on

BIOS Waiting for the completion of setting clock generator

and check (Stop at DPORT=F11FH when an error

occurred) Waiting for the completion of serial port initialization

(model supporting SIO) Canceling NMI Mask Examining the checksum of TIT Clearance of IRT-running flag in Runtime side Updating checksum for Runtime

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

Table 2-4 D port status (8/8)

LED Status Test item Message

(F11EH)

Branching to Hibernation (model supporting BIOS hibernation)

Bluetooth initialization (model supporting Bluetooth) Check whether a target maintenance card is set

Disabling a PC card not used Setting of Wake UP status data for ACPI

HW initialization prior to boot, Waiting for the

completion of HW initialization

Notifies the DVI connection status to VGA BIOS

(model supporting DVI) Setting of battery save mode Setting of date Waiting for completion of Bluetooth initialization

(model supporting Bluetooth)

Update of DMI Wakeup factor, Update of SM-BIOS

structure table Closing PCI device configuration space Cache control

Process related to CPU Making the CPU clock to be set by SETUP Waiting for completion of motor-off of disabled HDD Final decision of USB FDD information Post-process of PRE_BOOT_SETUP Clearance of PWRBTN_STS Enabling POWER Button

Clearance of IRT status F120H Updating checksum for Runtime

FFFFH

Check 1 If the D port status error code F11CH or F11EH is displayed, go to the 1.8” HDD

Troubleshooting Procedures in Section 2.6.

Check 2 If any other D port status error code is displayed, perform Procedure 3.

D port error statuses are following:

Error code Contents

F116H Exception check error F11FH Error of Setting clock generator

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

Procedure 3 Diagnostic Test Program Execution Check

Execute the following tests from the Diagnostic Test Menu. Refer to Chapter 3, Tests and Diagnostics, for more information on how to perform these tests.

1. System test

2. Memory test

3. Keyboard test

4. Display test

5. Floppy Disk test

6. Hard Disk test

7. Real Timer test

8. NDP test

9. Expansion test

10. Only One test

11. Wireless LAN test

12. LAN/Modem/Bluetooth/IEEE1394 test

13. Sound test

If an error is detected during these tests, go to Procedure 4.

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

Procedure 4 Replacement Check

The System board connectors may be disconnected. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and perform Check 1.

Check 1 Visually check for the following:

a) Cracked or broken connector housing b) Damaged connector pins

If connectors are in good condition, but there is still a problem, go to Check 2.

Check 2 The System board may be damaged. Replace the System board with a new one

following the steps described in Chapter 4, Replacement Procedures.

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2 Troubleshooting Procedures 2.5 USB FDD Troubleshooting

2.5 USB FDD Troubleshooting

This section describes how to determine if the USB FDD is functioning properly. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required.

Procedure 1: FDD Head Cleaning Check Procedure 2: Diagnostic Test Program Execution Check Procedure 3: Connector Check and Replacement Check

Procedure 1 FDD Head Cleaning Check

FDD head cleaning operation details are given in Chapter 3, Tests and Diagnostics. Insert the Diagnostics Disk in the USB floppy disk drive, turn on the computer and run the

test. Clean the FDD heads using the cleaning kit. If the USB FDD still does not function properly after cleaning, go to Procedure 2.

If the test program cannot be executed, go to Procedure 3.

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2.5 USB FDD Troubleshooting 2 Troubleshooting Procedures

Procedure 2 Diagnostic Test Program Execution Check

Insert the Diagnostics Disk in the USB FDD, turn on the computer and run the test. Refer to Chapter 3, Tests and Diagnostics, for more information about the diagnostics test procedures.

If the test program cannot be executed, go to Procedure 3. Floppy disk drive test error codes and their status names are listed in Table 2-5. Make sure

the floppy disk is formatted correctly and that the write protect tab is disabled. If any other errors occur while executing the FDD diagnostics test, go to Check 1.

Table 2-5 FDD error code and status

Code Status

01h Bad command 02h Address mark not found 03h Write protected 04h Record not found 06h Media removed on dual attach card 08h DMA overrun error 09h DMA boundary error 10h CRC error 20h FDC error 40h Seek error 60h No FDD 80h Time out error (Not ready)

EEh Write buffer error

FFh Data compare error

Check 1 If the following message displays, release the write protect tab on the floppy disk.

If any other message appears, perform Check 2.

FDD-Write protected

Check 2 Make sure the floppy disk is formatted correctly. If it is, go to Procedure 3.

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2 Troubleshooting Procedures 2.5 USB FDD Troubleshooting

Procedure 3 Connector Check and Replacement Check

The USB FDD is connected to connector CN4621 or CN4620 on the SD Board (FLVSD*) and the SD Board is connected to the System board as shown below.

Check 1 Make sure all the connections are secure.

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

Check 2 The USB FDD may be defective or damaged. Replace it with a new one. If the

USB FDD is still not functioning properly, perform Check 3.

Check 3 The SD board may be defective or damaged. Replace it with a new one. If the

USB FDD is still not functioning properly, perform Check 4.

Check 4 Replace the System board with a new one following the steps in Chapter 4,

Replacement Procedures.

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2.6 HDD Troubleshooting 2 Troubleshooting Procedures

2.6 HDD Troubleshooting

This section describes how to determine if the HDD is functioning properly. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required.

Procedure 1: Message Check Procedure 2: Partition Check Procedure 3: Format Check Procedure 4: Diagnostic Test Program Execution Check Procedure 5: Connector Check and Replacement Check

CAUTION: The contents of the hard disk will be erased when you execute the HDD

troubleshooting procedures. Transfer the contents of the hard disk to floppy disks or other storage media.

Procedure 1 Message Check

When the computer’s HDD does not function properly, some of the following error messages may appear on the display. Start with Check 1 below and perform the other checks as instructed.

Check 1 If any of the following messages appear, go to Procedure 5. If the following

messages do not appear, perform Check 2.

HDC ERROR (After 5 seconds this message will disappear.)

IDE #0 ERROR (After 5 seconds this message will disappear.)

IDE #1 ERROR (After 5 seconds this message will disappear.)

Check 2 If either of the following messages appears, go to Procedure 2. If the following

messages do not appear, perform Check 3.

Insert system disk in drive

Press any key when ready .....

or Non-System disk or disk error Replace and press any key

Check 3 Make sure the Hard Disk option is set to not used. If it is set to not used, choose

another setting and restart the computer. If the problem still exists, go to Procedure 2.

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2 Troubleshooting Procedures 2.6 HDD Troubleshooting

Procedure 2 Partition Check

Insert the Toshiba MS-DOS system disk and restart the computer with U key holding down. Perform the following checks:

Check 1 Type C: and press Enter. If you cannot change to drive C, go to Check 2. If you

can change to drive C, go to Check 3.

Check 2 Type FDISK and press Enter. Choose Display Partition Information from the

FDISK menu. If drive C is listed, go to Check 3. If drive C is not listed, return to the FDISK menu and choose the option to create a DOS partition on drive C. Restart the computer from the Toshiba MS-DOS system disk. If the problem still exists, go to Procedure 3.

Check 3 If drive C is listed as active in the FDISK menu, go to Check 4. If drive C is not

listed as active, return to the FDISK menu and choose the option to set the active partition for drive C. Restart the computer and then go to Procedure 3.

Check 4 Remove the FD and restart the computer. If the problem still exists, go to

Procedure 3.

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2.6 HDD Troubleshooting 2 Troubleshooting Procedures

Procedure 3 Format Check

The computer’s HDD is formatted using the low level format program and the MS-DOS FORMAT program. To format the HDD, start with Check 1 below and perform the other steps as required.

Check 1 Format the HDD and transfer system files using FORMAT C:/S/U on MS-DOS.

If the following message appears on the display, the HDD is formatted.

Format complete

If an error message appears on the display, refer to the Toshiba MS-DOS Manual for more information and perform Check 2.

Check 2 Set the partition of the HDD using FDISK command on MS-DOS. If it can not be

executed, go to Check 3. If executed, format the HDD.

Check 3 Start the Tests and Diagnostic program and format the HDD using HDD format in

the Tests and Diagnostic program. If it can be formatted set the HDD using FDISK command on MS-DOS. If it can not be formatted, go to Procedure 4.

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2 Troubleshooting Procedures 2.6 HDD Troubleshooting

Procedure 4 Diagnostic Test Program Execution Check

The HDD test program is stored in the Diagnostics Disk. Perform all of the HDD tests in the Hard Disk Drive Test. Refer to Chapter 3, Tests and Diagnostics, for more information about the HDD test program.

If an error is detected during the HDD test, an error code and status will be displayed. The error codes and statuses are listed in Table 2-6. If an error code is not generated and the problem still exists, go to Procedure 5.

Table 2-6 Hard disk drive error code and status

Code Status

01h Bad command 02h Bad address mark 04h Record not found 05h HDC not reset 07h Drive not initialized 08h HDC overrun (DRQ)

09h DMA boundary error 0Ah Bad sector error 0Bh Bad track error

10h ECC error

11h ECC recover enable

20h HDC error

40h Seek error

80h Time out error AAh Drive not ready BBh Undefined error CCh Write fault E0h Status error EEh Access time out error DAh No HDD

Procedure 5 Connector Check and Replacement Check

The HDD is connected to the System board via HD FPC (FLVHD*). The connections may be loosed or may be disconnected. The HDD, HD FPC or the System board may be damaged.

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2.6 HDD Troubleshooting 2 Troubleshooting Procedures

Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and perform the following checks:

Check 1 Make sure the HDD is firmly connected to the System board via HD FPC

If the connection is loose, reconnect firmly and repeat Procedure 1. If there is still

an error, go to Check 2.

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

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

Check 3 The HD FPC may be damaged. Replace it with a new one following the

instructions in Chapter 4, Replacement Procedures. 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, Replacement Procedures.

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2 Troubleshooting Procedures 2.7 Keyboard Troubleshooting

2.7 Keyboard Troubleshooting

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

Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector and Replacement Check

Procedure 1 Diagnostic Test Program Execution Check

Execute the Keyboard Test in the Diagnostic Program. Refer to Chapter 3, Tests and Diagnostics, for more information on how to perform the test program.

If an error occurs, go to Procedure 2. If an error does not occur, the keyboard is functioning properly.

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2.7 Keyboard Troubleshooting 2 Troubleshooting Procedures

Procedure 2 Connector and Replacement Check

The keyboard 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 securely connected to the connector CN3230 on

the System board.

If the connection is loose, reconnect firmly and repeat Procedure 1. If there is still an error, go to Check 2.

Check 2 The keyboard or its cable may be damaged. Replace it with a new one following

the instructions in Chapter 4, Replacement Procedures. 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, Replacement Procedures.

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2 Troubleshooting Procedures 2.8 Display Troubleshooting

2.8 Display Troubleshooting

This section describes how to determine if the computer’s display is functioning properly. Start with Procedure 1 and continue with the other procedures as instructed.

Procedure 1: External Monitor Check Procedure 2: Diagnostic Test Program Execution Check Procedure 3: Connector and Cable Check Procedure 4: Replacement Check

Procedure 1 External Monitor Check

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

If the external monitor 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 Test Program Execution 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.

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2.8 Display Troubleshooting 2 Troubleshooting Procedures

Procedure 3 Connector and Cable Check

The LCD Module is connected to CN 5600 on the System board via a LCD cable. The FL is connected to the BL board (FLVBL*) and the BL board is connected to CN9650 on the System board. The connectors may be disconnected from the System board or the BL board, or they may be damaged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures.

If the connection is loose, reconnect firmly and restart the computer. If there is still an error, go to Procedure 4.

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2 Troubleshooting Procedures 2.8 Display Troubleshooting

Procedure 4 Replacement Check

The FL, BL board, LCD module, and System board are connected to 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:

If the FL does not light, perform Check 1. If characters or graphics are not displayed clearly, perform Check 4. If some screen functions do not operate properly, perform Check 4. If the FL remains lit when the display is closed, perform Check 5.

Check 1 Replace the FL with a new one following the instructions in Chapter 4,

Replacement Procedures and test the display again. If the problem still exists, perform Check2.

Check 2 The LCD/BL cable or HV cable may be defective or damaged. Replace the

FL/LCD or HV cable with a new one following the instructions in Chapter 4, Replacement Procedure and test the display again. If the problem still exists, perform Check3.

Check 3 The BL board may be defective or damaged. Replace the BL board with a new

one following the instructions in Chapter 4, Replacement Procedure and test the display again. If the problem still exists, perform Check4.

Check 4 The LCD module may be defective or damaged. Replace the LCD module with a

new one following the instructions in Chapter 4, Replacement Procedure and test the display again. If the problem still exists, perform Check 5.

Check 5 The System board may be defective or damaged. Replace it with a new one

following the instructions in Chapter 4, Replacement Procedure.

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2.9 Accupoint Troubleshooting 2 Troubleshooting Procedures

2.9 Accupoint Troubleshooting

To determine if the computer’s Accupoint is functioning properly, perform the following procedures. Start with Procedure 1 and continue with the other procedures as instructed.

Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector and Replacement Check

Procedure 1 Diagnostic Test Program Execution Check

Execute the Keyboard Test in the Diagnostic Program. Refer to Chapter 3, Tests and Diagnostics, for more information on how to perform the test program.

If an error occurs, go to Procedure 2. If an error does not occur, the keyboard is functioning properly.

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2 Troubleshooting Procedures 2.9 Accupoint Troubleshooting

Procedure 2 Connector and Replacement Check

The Accupoint 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 Accupoint cable is firmly connected to the connector CN3240 on

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 Accupoint or the Accupoint cable may be damaged. Replace it with a new

one following the instructions in Chapter 4, Replacement Procedures. 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, Replacement Procedures.

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2.10 Modem Troubleshooting 2 Troubleshooting Procedures

2.10 Modem Troubleshooting

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

Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector Check and Replacement Check

Procedure 1 Diagnostic Test Program Execution Check

The LAN/Modem/Bluetooth/IEEE 1394 test program is stored in the Diagnostics Disk. For the test, prepare a test Sound/LAN/Modem. Then insert the Diagnostics Disk in the USB floppy disk drive, turn on the computer and run

the test. Refer to Chapter 3, Tests and Diagnostics, for more information about the diagnostics test procedures.

If any errors occur while executing the LAN/Modem/Bluetooth/IEEE 1394 test, go to Procedure 2.

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2 Troubleshooting Procedures 2.10 Modem Troubleshooting

Procedure 2 Connector Check an d Replacement Check

The Modem is installed as a modem daughter card (MDC). If the modem malfunctions, the MDC, SD board (FLVSD*), System Board or their connectors might be damaged.

Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and perform the following checks:

Check 1 Make sure the following connections are secure.

If a connector is disconnected, connect it firmly and repeat Procedure 1. If the Modem is still not functioning properly, perform Check 2.

Check 2 The Modem cable or MDC cable may be defective or damaged. Replace it with a

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

Check 3 The MDC may be defective or damaged. Replace it with a new one following the

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

Check 4 The SD board may be defective or damaged. Replace it with a new one following

the steps in Chapter 4, Replacement Procedures. If the Modem is still not functioning properly, perform Check 5.

Check 5 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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2.11 LAN Troubleshooting 2 Troubleshooting Procedures

2.11 LAN Troubleshooting

This section describes how to determine if the computer's LAN is functioning properly. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required.

Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector Check and Replacement Check

Procedure 1 Diagnostic Test Program Execution Check

The LAN/Modem/Bluetooth/IEEE1394 test program is stored in the Diagnostics Disk. For the test, prepare a test LAN/Modem/Bluetooth/IEEE1394. Then 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 more information about the diagnostics test procedures.

If any errors occur while executing the test, go to Procedure 2.

Procedure 2 Connector Check and Replacement Check

A RJ45 jack with LAN cable is connected to the connector CN4100 on the System Board. If the LAN malfunctions, the connections may loose or the LAN cable, LAN harness or, System Board might be damaged.

Disassemble the computer following the steps described in Chapter 4, Replacement

Procedures.

Check 1 Make sure the following connections are secure. If any connection is loose, secure

the connection. If the LAN is still not functioning properly, perform Check 2

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2 Troubleshooting Procedures 2.11 LAN Troubleshooting

Check 2 The LAN cable may be defective or damaged. Replace it with a new one

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

Check 3 The LAN harness may be defective or damaged. Replace it with a new one

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

Check 4 The System board may be defective or damaged. Replace it with a new one

following the steps in Chapter 4, Replacement Procedures.

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2.12 Sound Troubleshooting 2 Troubleshooting Procedures

2.12 Sound Troubleshooting

To check if the sound function is defective or malfunctioning, follow the troubleshooting procedures below as instructed.

Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector Check Procedure 3: Replacement Check

Procedure 1 Diagnostic Test Program Execution Check

Execute the Sound test in Sound Test program disk. Refer to Chapter 3, Tests and Diagnostics for more information on how to perform the test program.

If any error is detected by the test, go to Procedure 2

Procedure 2 Connector Check

The connection of sound system is shown in the following figure.

As the connection may be defective, disassemble the computer and check each connection. If the problem still occurs, go to Procedure 3.

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2 Troubleshooting Procedures 2.12 Sound Troubleshooting

Procedure 3 Replacement Check

• If headphone does not work properly, perform check 1.

• If external microphone does not work properly, perform check 2.

• If speaker does not work properly, perform check 3.

Check 1 The headphone may be faulty. Replace it with a new one following the steps in

Chapter 4. If the problem still occurs, perform Check 4.

Check 2 The external microphone may be faulty. Replace it with a new one following the

steps in Chapter 4. If the problem still occurs, perform Check 4.

Check 3 The speaker may be faulty. Replace it with a new one following the steps in

Chapter 4. If the problem still occurs, perform Check 4.

Check 4 The SD board may be faulty. Replace it with a new one following the instructions

in Chapter 4. If the problem still occurs, perform Check 5.

Check 5 The System board may be faulty. Replace it with a new one following the

instructions in Chapter 4.

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2.13 Bluetooth Troubleshooting 2 Troubleshooting Procedures

2.13 Bluetooth Troubleshooting

To check if the Bluetooth is malfunctioning or not, follow the troubleshooting procedures below as instructed.

Procedure 1: Transmitting-Receiving Check Procedure 2: Antenna Connection Check Procedure 3: Replacement Check

Procedure 1 Transmitting-Receiving Check

Before starting the test, make sure the wireless communication switch is set in the ON position.

Check 1 Execute Bluetooth test program to check the transmitting-receiving function of

Bluetooth. You will need a second computer that can communicate by Bluetooth. Perform the LAN/Modem/Bluetooth/ IEEE1394 test following the instructions described in Chapter 3.

If the computer passes the test, the function is correctly working. If the computer does not pass the test, perform Procedure 2.

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2 Troubleshooting Procedures 2.13 Bluetooth Troubleshooting

Procedure 2 Antenna Connection Check

The Bluetooth module and Bluetooth antenna are connected as shown below:

Any of the connections may be defective. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures, and perform the following checks:

Check 1 Make sure that the wireless communication switch is “On”.

If the switch is “Off”, turn it “On”. If the problem still occurs, perform Check 2.

Check 2 Make sure that Bluetooth module is firmly connected to the CN4400 on the

System board. If the connector is defective, connect it firmly and perform Procedure 1. If the problem still occurs, perform Check 3.

Check 3 Make sure that Bluetooth antenna cable is firmly connected to the connector on

the Bluetooth module. If the Bluetooth antenna cable is not connected properly, connect it firmly and perform Procedure 1. If the problem still occurs, go to the procedure 3.

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2.13 Bluetooth Troubleshooting 2 Troubleshooting Procedures

Procedure 3 Replacement Check

Bluetooth module, Bluetooth antenna or System board may be faulty. Refer to Chapter 4, Replacement Procedures, for instructions on how to disassemble the computer and then

perform the following checks:

Check 1 The Bluetooth antenna may be faulty. Replace it with a new one following the

instructions in Chapter 4, Replacement Procedures. If the problem still occurs, perform Check 2.

Check 2 The Bluetooth module may be faulty. Replace it with a new one following the

instructions in Chapter 4, Replacement Procedures. If the problem still occurs, perform Check 3.

Check3 The System board may be faulty. Replace it with a new one following the

instructions in Chapter 4, Replacement Procedures.

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2 Troubleshooting Procedures 2.14 Wireless LAN Troubleshooting

2.14 Wireless LAN Troubleshooting

This section describes how to determine if the computer's Wireless LAN is functioning properly. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required.

Procedure 1: Transmitting-Receiving Check Procedure 2: Antenna Connection Check Procedure 3: Replacement Check

Procedure 1 Transmitting-Receiving Check

Make sure the wireless communication switch of the computer is turned ON. If it is not, slide the switch to turn it on.

Check 1 Execute test program to check the transmitting-receiving function of the wireless

LAN. You will need a second computer that can communicate by the wireless LAN. Perform the test following the instructions described in Chapter 3, Wireless LAN Test Program.

If the computer passes the test, the function is correctly working.

If the computer does not pass the test, perform Procedure 2.

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Toshiba libretto u100 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

Chapter 1 Contents

1.1 Features

1 Hardware Overview 1.2 USB 3.5-inch Floppy Disk Drive

1.3 1.8-inch Hard Disk Drive 1 Hardware Overview

1.4 Optical Drive

1.4.1 DVD-ROM & CD-R/RW Drive

1.4.2 DVD Super Multi Drive

1.5 Keyboard

1.6 LCD Module

1.7 Power Supply

1.8 Batteries

1.8.1 Main Battery

1.8.2 Battery Charging Control

1.8.3 RTC Battery

1.9 AC Adapter

Chapter 2 Contents

2.1 Troubleshooting

2 Troubleshooting Procedures 2.2 Troubleshooting Flowchart

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting

2.4 System Board Troubleshooting 2 Troubleshooting Procedures

2 Troubleshooting Procedures 2.5 USB FDD Troubleshooting

2.6 HDD Troubleshooting

2.7 Keyboard Troubleshooting

2.8 Display Troubleshooting

2.9 Accupoint Troubleshooting

2.10 Modem Troubleshooting

2.11 LAN Troubleshooting

2.12 Sound Troubleshooting

2.13 Bluetooth Troubleshooting

2.14 Wireless LAN Troubleshooting