Toshiba tecra m5 Service Manual

Toshiba Personal Computer

TECRA M5

Maintenance Manual

TOSHIBA CORPORATION

File Number 960-542

[CONFIDENTIAL]

Copyright

© 2006 by Toshiba Corporation. All rights reserved. Under the copyright laws, this manual
cannot be reproduced in any form without the prior written permission of Toshiba. No patent
liability is assumed with respect to the use of the information contained herein.

Toshiba Personal Computer TECRA M5 Maintenance Manual
First edition January 2006

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 TECRA M5 at the time of
this manual's production. However, succeeding computers and manuals are subject to
change without notice. Therefore, Toshiba assumes no liability for damages incurred
directly or indirectly from errors, omissions, or discrepancies between any succeeding
product and this manual.

Trademarks

IBM is a registered trademark and IBM PC is a trademark of International Business
Machines Corporation.
Intel, Intel SpeedStep, Intel Core and Centrino 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.
Photo CD is a trademark of Eastman Kodak.
Sonic RecordNow! is a registered trademark of Sonic Solutions.
Bluetooth is a trademark owned by its proprietor and used by TOSHIBA under license.
i.LINK is trademark and registered trademark of Sony Corporation.
InterVideo and WinDVD are registered trademarks of InterVideo Inc. WinDVD Creator is
trademark of InterVideo Inc.
Other trademarks and registered trademarks not listed above may be used in this manual.

ii [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

Preface

This maintenance manual describes how to perform hardware service maintenance for the
Toshiba Personal Computer TECRA M5.

The procedures described in this manual are intended to help service technicians isolate
faulty Field Replaceable Units (FRUs) and replace them in the field.

SAFETY PRECAUTIONS

Four types of messages are used in this manual to bring important information to your
attention. Each of these messages will be italicized and identified as shown below.

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

serious bodily injury, if the safety instruction is not observed.

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

injury, if the safety instruction is not observed.

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

damage, if the safety instruction is not observed.

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

service.

Improper repair of the computer may result in safety hazards. Toshiba requires service
technicians and authorized dealers or service providers to ensure the following safety
precautions are adhered to strictly.

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

fastened, it could come loose, creating a danger of a short circuit, which could cause
overheating, smoke or fire.

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

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

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] iii

The manual is divided into the following parts:

Chapter 1 Hardware Overview describes the TECRA M5 system unit and each

FRU.

Chapter 2 Troubleshooting Procedures explains how to diagnose and resolve

FRU problems.

Chapter 3 Test and Diagnostics describes how to perform test and diagnostic

operations for maintenance service.

Chapter 4 Replacement Procedures describes the removal and replacement of the

FRUs.

Appendices The appendices describe the following:

 Handling the LCD module
 Board layout
 Pin assignments
 Keyboard scan/character codes
 Key layout
 Wiring diagrams
 BIOS rewrite procedures
 EC/KBC rewrite procedures
 Reliability

iv [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

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

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] v

Table of Contents

Chapter 1 Hardware Overview

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

1.2 System Unit Block Diagram......................................................................................1-8

1.3 3.5-inch Floppy Disk Drive (USB External) ...........................................................1-14

1.4 2.5-inch Hard Disk Drive......................................................................................... 1-15

1.5 CD-ROM Drive .......................................................................................................1-18

1.6 DVD-ROM Drive .................................................................................................... 1-19

1.7 CD-R/RW&DVD-ROM Drive................................................................................ 1-20

1.8 DVD-Super Multi Drive.......................................................................................... 1-22

1.9 Keyboard..................................................................................................................1-24

1.10 TFT Color Display...................................................................................................1-25

1.11 Power Supply...........................................................................................................1-28

1.12 Batteries ...................................................................................................................1-30

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................................................................................2-16

2.5 USB FDD Troubleshooting .....................................................................................2-33

2.6 HDD Troubleshooting ............................................................................................. 2-36

2.7 Keyboard and Touch pad Troubleshooting..............................................................2-41

2.8 Display Troubleshooting..........................................................................................2-44

2.9 Optical Drive Troubleshooting................................................................................ 2-46

2.10 Modem Troubleshooting..........................................................................................2-48

2.11 LAN Troubleshooting..............................................................................................2-50

2.12 Bluetooth Troubleshooting ......................................................................................2-51

2.13 Wireless LAN Troubleshooting...............................................................................2-54

2.14 Sound Troubleshooting............................................................................................2-57

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2.15 SD Card Slot Troubleshooting................................................................................. 2-60

2.16 PCI Express Card Slot Troubleshooting..................................................................2-61

2.17 Fingerprint Sensor Troubleshooting........................................................................2-62

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

3.4 Heatrun Test.............................................................................................................3-10

3.5 Subtest Names.......................................................................................................... 3-11

3.6 System Test.............................................................................................................. 3-13

3.7 Memory Test............................................................................................................ 3-15

3.8 Keyboard Test.......................................................................................................... 3-16

3.9 Display Test.............................................................................................................3-17

3.10 Floppy Disk Test......................................................................................................3-20

3.11 Printer Test...............................................................................................................3-22

3.12 Async Test ............................................................................................................... 3-24

3.13 Hard Disk Test......................................................................................................... 3-25

3.14 Real Timer Test........................................................................................................3-28

3.15 NDP Test.................................................................................................................. 3-30

3.16 Expansion Test.........................................................................................................3-31

3.17 CD-ROM/DVD-ROM Test .....................................................................................3-33

3.18 Error Code and Error Status Names.........................................................................3-34

3.19 Hard Disk Test Detail Status ................................................................................... 3-37

3.20 ONLY ONE TEST................................................................................................... 3-39

3.21 Head Cleaning.......................................................................................................... 3-47

3.22 Log Utilities............................................................................................................. 3-48

3.23 Running Test............................................................................................................ 3-50

3.24 Floppy Disk Drive Utilities......................................................................................3-51

3.25 System Configuration ..............................................................................................3-56

3.26 Wireless LAN Test Program (Intel-made a/b/g)......................................................3-58

3.27 LAN/Modem/Bluetooth/IEEE1394 Test Program .................................................. 3-63

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] vii

3.28 Sound Test program................................................................................................. 3-77

3.29 SETUP .....................................................................................................................3-83

Chapter 4 Replacement Procedures

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

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

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

4.4 SD card.....................................................................................................................4-12

4.5 HDD......................................................................................................................... 4-13

4.6 Slim select bay module............................................................................................4-17

4.7 Memory module.......................................................................................................4-20

4.8 Keyboard..................................................................................................................4-22

4.9 SW membrane.......................................................................................................... 4-27

4.10 Display assembly..................................................................................................... 4-29

4.11 MDC (Modem Daughter Card)................................................................................4-34

4.12 Wireless LAN board................................................................................................ 4-36

4.13 Internal microphone................................................................................................. 4-39

4.14 Sound board.............................................................................................................4-40

4.15 RTC battery.............................................................................................................. 4-42

4.16 Video board.............................................................................................................. 4-44

4.17 GPU heat sink.......................................................................................................... 4-46

4.18 CPU heat sink/CPU..................................................................................................4-48

4.19 Fan............................................................................................................................4-52

4.20 System board/HDD cable/DC-IN jack.....................................................................4-54

4.21 LAN/Modem jack.................................................................................................... 4-57

4.22 PC card slot.............................................................................................................. 4-58

4.23 Battery lock/Battery latch/ODD latch......................................................................4-59

4.24 LCD unit/FL inverter...............................................................................................4-61

4.25 Touch pad.................................................................................................................4-66

4.26 Finger print sensor board.........................................................................................4-68

4.27 Bluetooth module.....................................................................................................4-70

4.28 Hinge........................................................................................................................4-72

4.29 Speaker..................................................................................................................... 4-78

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4.30 Wireless LAN antenna/Bluetooth antenna...............................................................4-80

4.31 LCD cover latch.......................................................................................................4-82

4.32 Fluorescent Lamp.....................................................................................................4-83

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

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x [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

Chapter 1
Hardware Overview

[CONFIDENTIAL]

1 Hardware Overview

1-ii [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

1 Hardware Overview

Chapter 1 Contents

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

1.2 System Unit Block Diagram.......................................................................................1-8

1.3 3.5-inch Floppy Disk Drive (USB External)............................................................1-14

1.4 2.5-inch Hard Disk Drive.........................................................................................1-15

1.5 CD-ROM Drive........................................................................................................1-18

1.6 DVD-ROM Drive.....................................................................................................1-19

1.7 CD-R/RW&DVD-ROM Drive.................................................................................1-20

1.8 DVD-Super Multi Drive...........................................................................................1-22

1.9 Keyboard ..................................................................................................................1-24

1.10 TFT Color Display ...................................................................................................1-25

1.10.1 LCD Module.......................................................................................1-25

1.10.2 FL Inverter Board ...............................................................................1-27

1.11 Power Supply............................................................................................................1-28

1.12 Batteries....................................................................................................................1-30

1.12.1 Main Battery .......................................................................................1-30

1.12.2 Battery Charging Control....................................................................1-31

1.12.3 RTC battery.........................................................................................1-32

1.13 AC Adaptor ..............................................................................................................1-33

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] 1-iii

1 Hardware Overview

Figures

Figure 1-1 Front of the computer .....................................................................................1-6

Figure 1-2 System unit configuration...............................................................................1-7

Figure 1-3 System unit block diagram .............................................................................1-8

Figure 1-4 3.5-inch FDD (USB External)......................................................................1-14

Figure 1-5 2.5-inch HDD ...............................................................................................1-15

Figure 1-6 CD-ROM drive.............................................................................................1-18

Figure 1-7 Keyboard ......................................................................................................1-24

Figure 1-8 LCD module .................................................................................................1-25

Tables

Table 1-1 3.5-inch FDD specifications.........................................................................1-14

Table 1-2 2.5-inch HDD specifications ........................................................................1-15

Table 1-3 CD-ROM drive specifications......................................................................1-18

Table 1-4 DVD-ROM drive specifications...................................................................1-19

Table 1-5 CD-R/RW&DVD-ROM drive specifications...............................................1-20

Table 1-6 DVD Super Multi drive specifications.........................................................1-22

Table 1-7 LCD module specifications ..........................................................................1-25

Table 1-8 FL inverter board specifications...................................................................1-27

Table 1-9 Power supply output rating...........................................................................1-29

Table 1-10 Battery specifications ...................................................................................1-30

Table 1-11 Time required for charges ............................................................................1-31

Table 1-12 RTC battery charging/data preservation time...............................................1-32

Table 1-13 AC adapter specifications.............................................................................1-33

1-iv [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

1.1 Features 1 Hardware Overview

1 Features

1.1 Features

The Toshiba TECRA M5 Personal Computer uses extensive Large Scale Integration (LSI),
and Complementary Metal-Oxide Semiconductor (CMOS) technology extensively to provide
compact size, minimum weight, low power usage and high reliability. This computer
incorporates the following features.

There some models and options. Refer to the Parts List for the configuration of each model
and options.

 Microprocessor

The TECRA M5 computer is equipped with an Intel® CoreTM Duo Processor or Intel®
CoreTM Solo Processor. These processors incorporate a math co-processor, a 2MB L2
cache memory.
The PC comes in with one of the following speeds:

Intel® CoreTM Duo Processor

•

1.66GHz (T2300) /1.83GHz (T2400)/2.00GHz (T2500)/2.16GHz (T2600)

Intel® CoreTM Solo Processor

•

1.66GHz (T1300)

These processors operate at 667MHz bus clock.

 Chipset

The TECRA M5 is equipped with Intel 945PM, Intel ICH7-M (82801GBM) and
TI PCI7412ZHK.

 GPU (Graphics Processing Unit)

An nVIDIA Quadro NVS 110M (G72) Graphics Processing Unit is used as for a GPU.

 Memory

The computer comes with two DDR2 SO-DIMM slots. Two memory modules of 256GB,
512MB, 1GB (1,024MB) or 2GB (2,048MB) can be installed.

 HDD

The computer has a 2.5-inch SATA HDD. The following capacities are available.

•

40/60/80/100/120 GB

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1 Hardware Overview 1.1 Features

 USB FDD

A 3.5-inch USB FDD accommodates 2HD (1.44MB) or 2DD (720KB) disks.

 Slim Bay

An Optical drive, 2

nd

HDD or 2nd Battery pack can be installed in the Slim Bay.

 Optical Drive

A CD-ROM drive, DVD-ROM drive, CD-R/W&DVD-ROM drive or DVD Super Multi
drive can be installed in the Slim Bay.

 Display

The PC comes in with one of the following two types:

• • 14.1” XGA-TFT color display, resolution 1,024×768

14.1” SXGA+TFT color display, resolution 1,400×1,050

A video controller and a 128MB VRAM enables an external monitor to display 16M
colors at a resolution of 1,024×768 pixels or 1,400×1,050 pixels.

 Keyboard

An-easy-to-use 85(US)/87(UK)-key keyboard provides a numeric keypad overlay for fast
numeric data entry or for cursor and page control. The keyboard also includes two keys
that have special functions in Microsoft® Windows® 2000/XP. It supports software that
uses a 101- or 102-key enhanced keyboard.

 TOSHIBA Dual Pointing Device

The TOSHIBA Dual Pointing Device consists of Touch Pad and AccuPoint. The touch
pad and control buttons enable control of the on-screen pointer and scrolling of windows.
The pointer control stick and AccuPoint enables convenient control of the cursor.

 Batteries

The computer has two batteries: a rechargeable Lithium-Ion main battery pack and RTC
battery (that backs up the Real Time Clock and CMOS memory).

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1.1 Features 1 Hardware Overview

 Universal Serial Bus (USB2.0)

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

 IEEE 1394 port

The computer comes with one IEEE 1394 port. It enables high-speed data transfer
directly from external devices such as digital video cameras.

 Serial port

The serial port enables connection of serial devices such as an external modem, serial
mouse or serial printer.

 External monitor (RGB) port

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

 PC card and ExpressCard slot

A PC card slot and an ExpressCard slot are provided. The PC card slot (PCMCIA)
accommodates one Type II card and the ExpressCard slot accommodates an ExpressCard.

 SD Card slot

The SD Card Slot can accommodate Secure Digital flash memory cards with various
capacities. SD cards let you easily transfer data from devices, such as digital cameras and
Personal Digital Assistants, which use SD Card flash-memory.

 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.

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1 Hardware Overview 1.1 Features

 Docking interface port

The docking interface port enables connection of an optional Advanced Port Replicator
III Plus. It provides additional features as follows:

• RJ45 LAN jack

• RJ11 Modem jack

• External monitor port

• Parallel port

• Serial port

• PS/2 mouse port

• PS/2 keyboard port

• DC IN 15V jack

• Security lock slot

• Audio line-in, line-out jacks

• Universal Serial Bus 2.0 port (four)

• LINK (IEEE 1394) port

• DVI port

 Sound system

The sound system is equipped with the following features:

•

Stereo speakers

•

Built-in microphone

•

Volume control knob

•

Stereo headphone jack

•

External microphone jack

•

Supports VoIP

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1.1 Features 1 Hardware Overview

 Video-out jack

The video jack enables to transfer NTSC or PAL data to external devices connected with
S-Video cable.

 Internal modem

The computer contains a MDC, enabling data and fax communication. It supports ITU-T
V.90 (V.92). The transfer rates are 56 Kbps for data reception, 33.6 Kbps for data
transmission, and 14,400 bps for fax transmission. However, the actual speed depends on
the line quality. The RJ11 modem jack is used to accommodate a telephone line. Both of
V.90 and V.92 are supported only in USA, Canada and Australia. Only V.90 is available
in other regions.

 Internal LAN

The computer is equipped with LAN circuits that support Gigabit Ethernet LAN (1000
megabits per second, 1000BASE-T). It also supports Wakeup on LAN (WOL), Magic
Packet and LED.

B Wireless LAN

The computer is equipped with PCI-Ex MiniCard type wireless LAN board that supports

802.11 a/b/g in the PCI-Ex MiniCard slot. This function can be switched on and off by a
switch on the computer.

 Bluetooth

The computer is equipped with Bluetooth (V2.0+EDR) communications standard enable
wireless connection between electronic devices such as computers and printers. It
supports wireless communication switch.

 Presentation button

This button switches the display between internal display, external display, simultaneous
display and multi-monitor display.

 TOSHIBA Assist button

When this button is pressed during power-on, the PC is connected to "Toshiba Assist".
When this button is pressed during power-off, the PC is turned on and connected to
"Toshiba Assist".

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] 1-5

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

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1 Hardware Overview 1.2 System Unit Block Diagram

1.2 System Unit Block Diagram

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

Figure 1-3 System unit block diagram

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1.2 System Unit Block Diagram 1 Hardware Overview

The system unit is composed of the following major components:

 Processor

• Intel

®

CoreTM Duo Processor (dual core) or Intel® CoreTM Solo Processor (single

core)

• Core speed:

Dual core: 1.66GHz (T2300) /1.83GHz (T2400)/2.00GHz (T2500)/

2.16GHz (T2600)

Single core 1.66GHz (T1300)

( ): Processor Number

– Processor bus speed: 667MHz
– Core voltage: 0.50 to 1.30V
– Integrated L2 cache memory of 2MB
– Integrated NDP
– 478-pin Micro FC-PGA package

 Memory

Two memory slots are provided. Expansion up to 4GB (4,096MB) is available.

Memory

• DDR2-SDRAM

• 667/533MHz

• 1.8 volt operation

• FBGA

Memory Module

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

• PC 5300/PC4300

• 256MB/512MB/1GB (1,024MB)/2GB (2,048MB)

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1 Hardware Overview 1.2 System Unit Block Diagram

 Intel GMCH (North Bridge)

• One Intel 945PM is used.

• Features:

– Supports Yonah Processor System Bus
– System Memory Interface
– Memory Control: supports DDR2-400／DDR2-533／DDR2-667, 4GB max.
– DMI(Direct Media Interface)
– Supports ICH.
– 1466-ball 37.5×37.5×2.56mm FC-BGA package

 Intel ICH7-M (South Bridge)

• One Intel 82801 is used.

• Features:

– DMI(Direct Media Interface)
– PCI Express I/F (4 ports)
– PCI Bus I/F Rev2.3（6 PCI REQ/GNT Pairs）
– Integrated Serial ATA Host Controller (2 Prots,150MB/S)
– Integrated IDE Controller（Ultra ATA 100/66/33）
– AC’97 2.3 codecs
– Intel High Definition controller (Azalia)
– USB 1.1/2.0 Controller 8 ports
– Built-in LAN controller (WfM 2.0 & IEEE 802.3 compliance)
– Power Management (ACPI 2.0 compliance)
– SMBus2.0 controller
– FWH interface (BIOS)
– LPC interface (EC/KBC, Super I/O)
– IRQ controller
– Serial Interrupt Function
– Suspend/Resume control
– Built –in RTC
– GPIO

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1.2 System Unit Block Diagram 1 Hardware Overview

– 652-ball 31×31×2.51mm BGA Package

 Firmware Hub (FWH)

• One STMicro M50FW080NB is used.

• 8Mbits of flash memory are used.

– 288KB for System BIOS
– 64KB for LAN BIOS
– 64KB for VGA BIOS
– 64KB for Finger Print PBA
– 40KB for Logo & Hibernation
– 32KB for Option Log
– Others

 LED support Card controller (TI PCI7412ZHK)

− PCI I/F

− CardBus / Ultra media Controller (1 socket)

− SD/MMC, Memory Stick, XD Card Controller

− 1394 Controller (2 ports)

− 288-ball, 16×16×1.4mm, BGA Package

 GPU

nVIDIA Quadro NVS 110M (G72)

− VRAM DDR2 128MB

− PCI Express Interface

− LCD Interface

− S-Video

− 533-ball, 23×23×2.35mm, BGA Package

 Sound Controller

• Azalia Link (Intel High Definition Audio I/F) built in the Intel GMCH + STAC9200

• Amplifier: Mathushita made AN12941A

• Supports VoIP.

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1 Hardware Overview 1.2 System Unit Block Diagram

 EC/KBC (Embedded Controller/Keyboard Controller)

• One Mitsubishi M306KA micon chip functions as both EC and KBC.

 PSC (Power Supply Controller)

• One TMP86FS49AUG chip is used.

• This controller controls the power sources.

 Clock Generator

• One ICS L954321 is used.

• This device generates the system clock.

 Modem Controller

• One MDC is used.

• This controller has the following functions:

– One RJ11 port
– V.92 (V.90) 56K Modem/FAX
– Ring wake up support

 Internal LAN Controller

• Intel made GigaBit Ether (Vidalia) is used.

• This controller has the following functions:

– PCI-Ex connection
– Supports Gigabit Ethernet
– One RJ45 port
– WOL support
– Magic Packet support
– LED support

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1.2 System Unit Block Diagram 1 Hardware Overview

 Wireless LAN

• One PCI-Ex MiniCard

• Intel Golan a/b/g

 Super I/O

• One LPC47N217 chip is used.

• This gate array has the following features:

– Floppy Disk Controller
– Infrared Communications Controller
– Parallel Port Controller

 IEEE1394

• One TI PCI7412 is used.

 Sensor

• Thermal Sensor: One ADM1032ARMZ chip is used.

• LCD Sensor: One NRS-701-1015T chip is used.

• Acceleration Sensor: One ST Micro-made LIS3L02AQ chip is used.

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] 1-13

1 Hardware Overview 1.3 3.5-inch Floppy Disk Drive (USB External)

1.3 3.5-inch Floppy Disk Drive (USB External)

The 3.5-inch FDD is a thin, high-performance reliable drive that supports 720KB (formatted)
2DD and 1.44MB (formatted) 2HD disks.

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

Figure 1-4 3.5-inch FDD (USB External)

Table 1-1 3.5-inch FDD specifications

TEAC FD-05PUB-337

Items

720KB mode 1.44MB mode

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

USB Full speed mode (12M bits/second)
Disk rotation speed 300rpm
Track density 5.3 track/mm (135TPI)

(G8AC0000B320)

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1.4 2.5-inch Hard Disk Drive 1 Hardware Overview

1.4 2.5-inch Hard Disk Drive

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

2.5-inch magnetic disk and mini-Winchester type magnetic heads.
The computer supports a 40GB, 60GB, 80GB or 100GB.
The HDD is shown in figure 1-5. Specifications are listed in Table 1-2.

Figure 1-5 2.5-inch HDD

Table 1-2 2.5-inch HDD specifications (1/5)

Specifications

Items

Outline Width (mm)
dimensions Height (mm)
Depth (mm)
Weight (g)

Storage size (formatted) 40GB 40GB 40GB
Speed (RPM) 5,400 5,400 5,400
Data transfer speed (Mb/s ) 175.0-341.7Mb/s 64MB/s max. 493 max.
Interface transfer rate (MB/s) 100 max (Ultra DMA mode)
Track density (Ktpi) 88.1 - ­Average random seek time (ms)

Read

TOSHIBA

HDD2D34BZK01

69.85 70 70

9.5 9.5 9.5

100 100 100

95 max. 96 max. 96 max.

12

FUJITSU

G8BC00028410

12 typ.

HITACH GST

G8BC00029410

12

Motor startup time (s) 4 typ 4 4

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] 1-15

1 Hardware Overview 1.4 2.5-inch Hard Disk Drive

Table 1-2 2.5-inch HDD specifications (2/5)

Specifications

Items

Outline Width (mm)
dimensions Height (mm)
Depth (mm)
Weight (g)

Storage size (formatted) 60GB 60GB 60GB
Speed (RPM) 5,400 5,400 5,400

FUJITSU

G8BC00028610

70 69.85 69.85

9.5 9.5 9.5

100 102 max. 100

102 max. 95 97 typ.

HITACH GST

G8BC00029610

TOSHIBA

HDD2D35BZK01

Data transfer rate

To/From media (Mb/s)
Interface transfer rate (MB/s) 100(Ultra DMA mode)
Data buffer size (MB) 8 8 8
Average seek time (ms)

Read
Motor startup time (s) 4 4 3.5 typ.

64.0MB/s max.

12 typ.

493 max.

12

244.7-474.7

12

Table 1-2 2.5-inch HDD specifications (3/5)

Specifications

Items

Outline Width (mm)
dimensions Height (mm)
Depth (mm)
Weight (g)

Storage size (formatted) 80GB 80GB 80GB

TOSHIBA

HDD2D32BZK01

69.85 70.0 69.85±0.25

9.5 9.5 9.5±0.2

100 100 100.2±0.25

102 max. 101 max 102 max.

FUJITSU

G8BC00028810

HITACHI GST

G8BC00029810

Speed (RPM) 5,400 5,400 5,400
Data transfer speed (Mb/s) 218-429 64.0MB/s 493max
Data buffer size (MB/s) 8 8 8
Average seek time (ms)

Read
Motor Startup time (s) 4 4 typ. 3.5

12

12 typ

12 typ.

1-16 [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

1.4 2.5-inch Hard Disk Drive 1 Hardware Overview

Table 1-2 2.5-inch HDD specifications (4/5)

Specifications

Items

Outline Width (mm)
dimensions Height (mm)
Depth (mm)
Weight (g)

Storage size (formatted) 100GB 100GB 100GB
Speed (RPM) 5,400 5,400 5,400
Data transfer speed (Mb/s) 236.1-456.0 - 493max
Data buffer size (MB/s) 16 8 8

TOSHIBA

HDD2D30BZK01

69.85 70 69.85±0.25

9.5 9.5 9.5±0.2

100 100 100.2±0.25

102 max. 101 max. 102 max.

FUJITSU

G8BC00028A10

HITACHI GST

G8BC00029A10

Average seek time (ms)
Read

Motor startup time (s) 4 4 3.5

12

12

12 typ.

Table 1-2 2.5-inch HDD specifications (5/5)

Specifications

Items

Outline Width (mm)
Dimensions Height (mm)
Depth (mm)
Weight (g)

Storage size (formatted) 120GB 80GB 100GB
Speed (RPM) 5,400 7,200 7,200
Data transfer speed (Mb/s) 244.7-474.7 267-629 267-629
Interface transfer rate (MB/s) 100 (MAX Ultra DMA mode)
Track density (Ktpi) 125 127 127

TOSHIBA

HDD2D31BZK01

69.85 69.85±0.25 69.85±0.25

9.5 9.5±0.2 9.5±0.2

100 100.2±0.25 100.2±0.25

101 typ. 115 max. 115 max.

HITACHI GST

G8BC0002N810

HITACHI GST

G8BC0002NA10

Average seek time (ms)
Read
Write

Motor startup time (s) 3.5 typ 4 4

12

-

10
11

10
11

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] 1-17

1 Hardware Overview 1.5 CD-ROM Drive

1.5 CD-ROM Drive

The CD-ROM drive accommodates either 12 cm (4.72-inch) or 8 cm (3.15-inch) CDs. They
provide high-performance, 24-speed plays on a maximum (reads 3,600 KB per second).

The CD-ROM drive is shown in figure 1-6. Specifications are listed in Table 1-3.

Figure 1-6 CD-ROM drive

Table 1-3 CD-ROM drive specifications

Item TEAC CD-224EN (G8CC0002R420)

Data transfer rate (burst)
(sustained)
Access access time (ms) 110 average
Disc speed (rpm) (typ.) 5,136
Applicable discs CD/CD-ROM (12cm, 8cm)

Supported Format CD-DA, CD-ROM Mode 1, Mode 2

CD-ROM XA Mode 2 (Form 1, Form 2)
Photo CD (Single/multi-session), Enhanced CD

33.3Mbytes/sec max.
1,545 to 3,600kB/se

CD-R,CD-R/W

1-18 [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

1.6 DVD-ROM Drive 1 Hardware Overview

1.6 DVD-ROM Drive

The DVD-ROM drive accommodates either 12cm (4.72-inch) or 8cm (3.15-inch) DVDs.
This drive plays DVDs at maximum 8-speed and reads CDs at maximum 24-speed.

The specifications for the DVD-ROM drive are described in table 1-4.

Table 1-4 DVD-ROM drive specifications

Item

Data transfer rate (burst) 33.3 Mbytes/sec max
Average access time (ms) 120 (CD-ROM), 130 (DVD-ROM),

Disc speed (rpm) 5,090 (24x CAV speed mode) approx.
Starting time (sec) 19 max.
Readable discs CD/CD-ROM (12cm, 8cm), CD-R (Recorded),

CD-RW (Recorded), DVD-ROM, DVD-R (Recorded)
DVD-RW (Recorded), DVD-RAM (Recorded)
DVD+R (Recorded), DVD+R (Recorded)

Applicable Format CD

CD-DA
CD-ROM Mode1, Mode2

CD-ROM XA, Mode 2 (Form1, Form2)
Photo-CD, Enhanced CD, CD-TEXT,

Multisession CD
Addressing method 2

DVD

DVD-ROM,
DVD-R (General, Authoring, Single/Multi-border)

DVD-RW (Single/Multi-border, Packet)
DVD-Video, DVD-RAM (4.7GB, 2.6GB)
DVD-R/RW (Single/Multi-border, Packet)

TSST DV-28EN (G8CC0002E410)

(average TEAC standards)

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] 1-19

1 Hardware Overview 1.7 CD-R/RW&DVD-ROM Drive

1.7 CD-R/RW&DVD-ROM Drive

The CD-R/RW&DVD-ROM drive accommodates either 12 cm (4.72-inch) or 8 cm (3.15­inch) CDs, CD-R/RW and DVDs. It is a high-performance drive that reads CD-ROM at
maximum 24-speed, DVD-ROM at maximum 8-speed and writes CD-R at maximum 24­speed, CD-RW at maximum 4-speed.

The specifications are listed in Table 1-5.

Table 1-5 CD-R/RW&DVD-ROM drive specifications (1/2)

Item

PCC UJDA770 (G8CC0002J420)

ATAPI Burst (Mbytes/s) 16.6 (PIO Mode 4)

CD-ROM 150 typ. (Random) Average access

time (msec)

Data Buffer Capacity 2MB
Supported Discs CD: CD/CD-ROM, CD-R, CD-RW

Supported Formats CD: CD-DA, CD-ROM, CD-ROM XA, Photo CD,

DVD-ROM 180 typ. (Random)

DVD: DVD-ROM, DVD-R, DVD-RW, DVD+R, DVD+RW,

DVD+RAM, DVD+R DL

CD-Extra (CD+), CD-TEXT

DVD: DVD-R, DVD-RW (Ver.1.2), DVD-Video, DVD+R,

DVD+RW, DVD-RAM (2.6GB/4.7GB)

Specifications

16.6 (Multiword Mode 2)

33.3 (Ultra DMA Mode2)

1-20 [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

1.7 CD-R/RW&DVD-ROM Drive 1 Hardware Overview

Table 1-5 CD-R/RW&DVD-ROM drive specifications (2/2)

Item

TSST TS-L462C (G8CC0002V420)

Burst Transfer rate(Mbytes/s) 16.6 (PIO Mode 4)

Average access
time (msec)

Data Buffer Capacity 2MB
Readable Discs CD/CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-R,

Recordable Discs CD-R/RW
Applicable Format CD-DA (Red Book) - Standard Audio CD & CD-TEXT

CD-ROM 130 typ.
DVD-Single 130 typ

DVD-RW, DVD-RAM, DVD+R, DVD+RW

CD-ROM (Yellow Book Mode1 & 2) - Standard Data
CD-ROM XA (Mode2 Form1 & 2) - Photo CD, Multi­Session
CD-I (Green Book, Mode2 Form1 & 2, Ready, Bridge)
CD-Extra/ CD-Plus (Blue Book) - Audio & Text/Video
Video-CD (White Book) - MPEG1 Video
CD-R (Orange Book Part II)
CD-RW & HSRW (Orange Book Part III Volume1 &
Volume2)
Super Audio CD (SACD) Hybrid type
US & US+ RW

DVD-ROM (Book 1.02), DVD-Dual
DVD-Video (Book 1.1)
DVD-R (Book 1.0, 3.9G)
DVD-R (Book 2.0, 4.7G) - General & Authoring
DVD+R (Version 1.0), DVD+R DL
DVD+RW
DVD-RW (Non CPRM & CPRM)
DVD-RAM

Specifications

16.6 (Multiword Mode 2)

33.3 (Ultra DMA Mode2)

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] 1-21

1 Hardware Overview 1.8 DVD-Super Multi Drive

1.8 DVD-Super Multi Drive

This drive is a combination of DVD-ROM and DVD±R/±RW/-RAM Drive. It is full-size and
runs either 12cm (4.72-inch) or 8cm (3.15-inch) DVD/CDs without an adaptor. It reads
DVDs at maximum 8-speed and CDs at maximum 24-speed. It also writes CD-R at
maximum 24-speed, CD-RW at maximum 24-speed, DVD-R at maximum 8-speed, DVD­RW at maximum 8-speed, DVD+R at maximum 8-speed, DVD +RW at maximum 8-speed
and DVD-RAM at maximum 5-speed.

The specifications are listed in Table 1-6.

Table 1-6 DVD Super Multi drive specifications(1/2)

Item

IDE Data Transfer Mode PIO Mode 4, Multi Word DMA Mode 2,

Ultra DMA Mode2
ATAPI Interface SFF-8020,SFF-8090 Ver.5
Data buffer (MB) 2
Supported format (Read) KODAK Photo CD Single and Multi-session

CD Extra (CD PLUS)
Video CD
CD text data (Read / Write)
CD-R discs (Read/ Write)
CD-RW discs (Read/ Write)
DVD-ROM
DVD-R Ver.2.00 for General(Read/ Write)
DVD-R DL Ver.3.0 (Read/Write)
DVD-RW Ver.1.0 &1.1 &1.2(Read/ Write)
DVD+R Ver.1.0 & 1.11& 1.2 (Read/Write)
DVD+RDL Ver1.0(Read / Write)
DVD+RW Ver.1.1& 1.2 (Read/Write)
DVD+RW high speed Ver.1.0 (Read/Write)
DVD-RAM Ver.2.0 &2.1 (Read/ Write)

Pioneer DVR-K16
(G8CC0002U420)

1-22 [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

1.8 DVD-Super Multi Drive 1 Hardware Overview

Table 1-6 DVD Super Multi drive specifications (2/2)

Item PCC UJ-841

(G8CC0002T)

ATAPI Burst (Mbytes/s) 33.3 (Ultra DMA mode 2)

16.6 (PIO Mode 4, Multi word DMA mode 2)

Average access time (ms)
DVD-ROM

CD-ROM
Data Buffer Capacity (MB) 2
Supported Format CD: CD-DA, CD-ROM, CD-ROM XA,

Photo CD, CD-Extra (CD+),
CD-TEXT

DVD:DVD-R, DVD-RW(Ver. 1.1, Ver. 1.2)

DVD-Video, DVD+R, DVD-RW,
DVD-RAM(2.6GB/4.7GB)

180 typ
150 typ

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] 1-23

1 Hardware Overview 1.9 Keyboard

1.9 Keyboard

The keyboard is mounted 85(US)/87(UK) keys that consist of character key and control key,
and in conformity with JIS. The keyboard is connected to membrane connector on the system
board and controlled by the keyboard controller.

Figure 1-7 is a view of the keyboard.
See Appendix E about a layout of the keyboard.

Figure 1-7 Keyboard

1-24 [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

1.10 TFT Color Display 1 Hardware Overview

1.10 TFT Color Display

The TFT color display consists of 14.1-inch XGA/SXGA+ LCD module and FL inverter
board.

1.10.1 LCD Module

The LCD module used for the TFT color display uses a backlight as the light source and can
display a maximum of 262,144 colors with 1,024 x 768 or 1,400 x 1,050 resolution. The
nVIDIA Quadro NVS 110M (G72) can control internal and external XGA or SXGA+
support displays simultaneously.

Figure 1-8 shows a view of the LCD module and Table 1-7 lists the specifications.

Figure 1-8 LCD module

Table 1-7 LCD module specifications (1/3)

Item

14.1-inch XGA TFT (G33C00039110)

Number of Dots 1,024 (W) x 768 (H)
Dot spacing (mm) 0.279 (H) x 0.279 (V)
Display range (mm) 285.7 (H) x 214.3 (V)

Specifications

Table 1-7 LCD module specifications (2/3)

Item

14.1-inch XGA TFT (G33C00038110)

Number of Dots 1,024 (W) x 768 (H)
Dot spacing (mm) 0.279 (H) x 0.279 (V)
Display range (mm) 285.7 (H) x 214.3 (V)

Specifications

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] 1-25

1 Hardware Overview 1.10 TFT Color Display

Table 1-7 LCD module specifications (3/3)

Item

14.1-inch SXGA+ TFT (G33C00022210)

Number of Dots 1,400 (W) x 1,050 (H)
Dot spacing (mm) 0.204 (H) x 0.204 (V)
Display range (mm) 285.6 (H) x 214.2 (V)

Specifications

1-26 [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

1.10 TFT Color Display 1 Hardware Overview

1.10.2 FL Inverter Board

The FL inverter board supplies a high frequency current to illuminate the LCD module.
Table 1-8 lists the FL inverter board specifications.

Table 1-8 FL inverter board specifications

Item Specifications

G71C00011221

Voltage (V) DC 5 Input
Power (W) 7

Output

Voltage (V) 750
Current (mA) 6.00
Power (mA) 5W/7VA

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] 1-27

1 Hardware Overview 1.11 Power Supply

1.11 Power Supply

The power supply supplies many different voltages to the system board and performs 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.

1-28 [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

1.11 Power Supply 1 Hardware Overview

Table 1-9 Power supply output rating

Name Voltage (V) Use

PPV
PTV 1.05 CPU, MCH, ICH7-M

1R5-P1V 1.5 CPU, MCH, ICH7-M, PCI-E Mini Card

CRD1R5-P1V 1.5 Express Card

1R8-B1V 1.8 MCH, DDR2-SDRAM
2R5-P2V 2.5 MCH, CH7-M

LAN2R5-E2V 2.5 LAN

MR0R9-B0V 0.9 MCH, DDR2-SDRAM

0R9-P0V 0.9 DDR2-SDRAM

P3V 3.3

E3V 3.3 ICH7-M, PCI-E Mini Card, MDC

S3V 3.3 EC/KBC, 3AXIS Accelerometer
CRD-E3V 3.3V Express Card
CRD-P3V 3.3V Express Card

SD-P3V 3.3V SD Card

0.300-1.500 CPU

Clock Generator, Thermal Sensor, MCH, SDRAM(SPD),
ICH7-M, HDD, PC CARD Power., PCI-E Mini Card, FWH,
LED, TPM, Super I/O, RS232C, LCD, GPU, STAC9200

BT-P3V 3.3 Bluetooth

LAN-E3V 3.3 LAN

PGV 1.2 IGPU

1R2-P1V 1.2 GPU

LAN1R2-E1V 1.2 LAN

P5V 5

E5V 5 ICH7-M, USB Power

M5V 5 LED
MCV 5 PSC

SND-P5V 5 AN12941A

A4R7-P4V 4.7 STAC9200, AN12941A

R3V 2.0-3.5 ICH7-M (RTC)

ICH7-M, ODD, HDD, PC-Card Power, LED, KB, PAD,
Parallel, CRT, FAN, FL-Inv

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] 1-29

1 Hardware Overview 1.12 Batteries

1.12 Batteries

The computer has three types of batteries as follows:

 Main battery pack

 RTC battery

 Secondary battery pack (optional slim select bay module)

The battery specifications are listed in Table 1-10.

Table 1-10 Battery specifications

Battery name Material Output voltage Capacity

1st battery Lithium-Ion 10.8 V 4,700 mAh
High capacity battery Lithium-Ion 10.8 V 8,800 mAh
Extended capacity battery Lithium-Ion 10.8 V 7,050 mAh
2nd battery Lithium-Ion 10.8 V 3,600 mAh
RTC battery NiMH 2.4 V 16 mAh

1.12.1 Main Battery

The removable main battery pack is the computer’s main power source when the AC adaptor
is not attached. The main battery maintains the state of the computer when the computer
enters in resume mode.

1-30 [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

1.12 Batteries 1 Hardware Overview

1.12.2 Battery Charging Control

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

Battery Charge
When the AC adaptor is attached, there are two types of charge: When the system is powered

off and when the system is powered on. Table 1-11 lists the charging time required for
charges.

Table 1-11 Time required for charges

Battery type Power on (hours) Power off (hours)
1st battery (4,700 mAh) About 3.5 to 13.0 About 3.0
High capacity battery (8,800 mAh) About 5.0 to 21.5 About 4.0
Extended capacity battery (7050 mAh) About 5.0 to 17.5 About 3.5
2nd battery (3,600 mAh) About 4.0 to 9.5 About 3.0

NOTE: The time required when the system is powered on is affected by the amount of

power the system is consuming. Use of the fluorescent lamp and frequent disk
access diverts power and lengthens the charge time.

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

1. The battery becomes fully charged.

2. The AC adaptor or battery is removed.

3. The battery or output voltage is abnormal.

 Detection of full charge
A full charge is detected only when the battery is charging at charge. A full charge is

detected under any of the following conditions:

1. The current in the battery charging circuit drops under the predetermined limit.

2. The charging time exceeds the fixed limit.

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] 1-31

1 Hardware Overview 1.12 Batteries

1.12.3 RTC battery

The RTC battery provides power to keep the current date, time and other setup information
in memory while the computer is turned off. Table 1-12 lists the charging time and data
preservation period of the RTC battery.

Table 1-12 RTC battery charging/data preservation time

Status Time

Charging Time (power on) 8 hours
Data preservation period (full charge) 30 days

1-32 [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

1.13 AC Adapter 1 Hardware Overview

1.13 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 Specification

Power 75W (Peak 90W)
Input voltage 100V/240V
Input frequency 50Hz to 60Hz
Input current 1.5A or less (100V-240V)
Output voltage 15V
Output current 0A to 5A (At constant voltage mode)

G71C00043310 (2-pin) G71C00049410/G71C00049510

5A to 6A (At surge load mode)

(3-pin)

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] 1-33

1 Hardware Overview 1.13 AC Adapter

1-34 [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

Chapter 2
Troubleshooting Procedures

[CONFIDENTIAL]

2 Troubleshooting Procedures

2-ii [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

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 Icons in the LCD Check...............................................................2-6

Procedure 2 Error Code Check ........................................................................2-7

Procedure 3 Connection Check......................................................................2-13

Procedure 4 Charge Check.............................................................................2-14

Procedure 5 Replacement Check....................................................................2-15

2.4 System Board Troubleshooting................................................................................2-16

Procedure 1 Message Check ..........................................................................2-17

Procedure 2 Printer port LED Check on Boot Mode .....................................2-19

Procedure 3 Diagnostic Test Program Execution Check ...............................2-31

Procedure 4 Replacement Check....................................................................2-32

2.5 USB FDD Troubleshooting......................................................................................2-33

Procedure 1 USB FDD Head Cleaning Check...............................................2-33

Procedure 2 Diagnostic Test Program Execution Check ...............................2-34

Procedure 3 Connector Check and Replacement Check................................2-35

2.6 HDD Troubleshooting..............................................................................................2-36

Procedure 1 Message Check ..........................................................................2-36

Procedure 2 Partition Check...........................................................................2-37

Procedure 3 Format Check.............................................................................2-38

Procedure 4 Diagnostic Test Program Execution Check ...............................2-39

Procedure 5 Connector Check and Replacement Check................................2-40

2.7 Keyboard and Touch pad Troubleshooting..............................................................2-41

Procedure 1 Diagnostic Test Program Execution Check ...............................2-41

Procedure 2 Connector Check and Replacement Check................................2-42

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] 2-iii

2 Troubleshooting Procedures

2.8 Display Troubleshooting..........................................................................................2-44

Procedure 1 External Monitor Check.............................................................2-44

Procedure 2 Diagnostic Test Program Execution Check ...............................2-44

Procedure 3 Connector Check and Cable Check ...........................................2-44

Procedure 4 Replacement Check....................................................................2-45

2.9 Optical Drive Troubleshooting.................................................................................2-46

Procedure 1 Diagnostic Test Program Execution Check ...............................2-46

Procedure 2 Connector Check and Replacement Check................................2-47

2.10 Modem Troubleshooting..........................................................................................2-48

Procedure 1 Diagnostic Test Program Execution Check ...............................2-48

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

2.11 LAN Troubleshooting ..............................................................................................2-50

Procedure 1 Diagnostic Test Program Execution Check ...............................2-50

Procedure 2 Connector Check and Replacement Check................................2-50

2.12 Bluetooth Troubleshooting.......................................................................................2-51

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

Procedure 2 Connection Check......................................................................2-52

Procedure 3 Replacement Check....................................................................2-53

2.13 Wireless LAN Troubleshooting ...............................................................................2-54

Procedure 1 Transmitting-Receiving Check ..................................................2-54

Procedure 2 Antenna Connection Check .......................................................2-55

Procedure 3 Replacement Check....................................................................2-56

2.14 Sound Troubleshooting ............................................................................................2-57

Procedure 1 Diagnostic Test Program Execution Check ...............................2-57

Procedure 2 Connector Check........................................................................2-58

Procedure 3 Replacement Check....................................................................2-59

2.15 SD Card Slot Troubleshooting .................................................................................2-60

Procedure 1 Check on Windows XP..............................................................2-60

Procedure 2 Connector Check and Replacement Check................................2-60

2-iv [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

2 Troubleshooting Procedures

2.16 PCI ExpressCard Slot Troubleshooting....................................................................2-61

1. Gigabit Ether ExpressCard.............................................................................2-61

2. USB2.0 5in1 ExpressCard..............................................................................2-61

2.17 Fingerprint sensor Troubleshooting .........................................................................2-62

Procedure 1 Setting Windows Log-ON password .........................................2-63

Procedure 2 Registration of fingerprint..........................................................2-63

Procedure 3 Authentication of fingerprint .....................................................2-67

Procedure 4 Connector Check and Replacement Check................................2-68

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] 2-v

2 Troubleshooting Procedures

Figures

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

Figure 2-2 Printer port LED board......................................................................................2-19

Figure 2-3 Function of Printer port LED.............................................................................2-19

Tables

Table 2-1 Battery icon..........................................................................................................2-6

Table 2-2 DC IN icon...........................................................................................................2-6

Table 2-3 Error code ............................................................................................................2-7

Table 2-4 Result code ........................................................................................................2-14

Table 2-5 Printer port LED boot mode status....................................................................2-21

Table 2-6 FDD error code and status.................................................................................2-34

Table 2-7 HDD error code and status ................................................................................2-39

2-vi [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

2.1 Troubleshooting 2 Troubleshooting Procedures

2

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. Wireless LAN

2. System Board 7. Optical Drive 12. Sound components

3. USB Floppy Disk Drive 8. Modem 13. SD Card Slot

4. Hard Disk Drive 9. LAN 14. PCI ExpressCard Slot

5. Keyboard/Touch pad 10. Bluetooth 15. Fingerprint sensor

The Diagnostics Disk operations are described in Chapter 3. Detailed Replacement
Procedures are given in Chapter 4, Replacement Procedures.
The following tools are necessary for implementing the troubleshooting procedures:

The following tools are necessary for implementing the Diagnostics procedures:
For tools required for executing the Test Program, refer to the Chapter3. For tools required
for disassembling/assembling, refer to the Chapter 4.

1. A set of tools for debugging port test (test cable, test board, RS-232C cross cable,

display, D port FD)

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

3. Toshiba MS-DOS system FD

4. An external CRT display(for Display trouble shooting)

5. A SD card(for SD card slot trouble shooting)

6. An external microphone(for Sound trouble shooting)

7. Headphone(for Sound trouble shooting)

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2 Troubleshooting Procedures 2.2 Troubleshooting Flowchart

2.2 Troubleshooting Flowchart

Use the flowchart in Figure 2-1 as a guide for determining which FRU malfunctions. Before
going through the flowchart steps, check the following:

 Ask the user if a password is registered and, if it is, ask him or her to enter the

password.

 Make sure that Toshiba Windows® XP 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.
 Make sure the USB FDD and optical drive are empty.

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2.2 Troubleshooting Flowchart 2 Troubleshooting Procedures

Figure 2-1 Troubleshooting flowchart (1/2)

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2 Troubleshooting Procedures 2.2 Troubleshooting Flowchart

Figure 2-1 Troubleshooting flowchart (2/2)

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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 Troubleshooting Procedures in Section 2.4.

2. If an error is detected on the floppy disk test, perform the USB FDD Troubleshooting

Procedures in Section 2.5.

3. If an error is detected on the hard disk test, perform the HDD Troubleshooting

Procedures in Section 2.6.

4. If an error is detected on the keyboard test, perform the Keyboard and Touch pad

Troubleshooting Procedures in Section 2.7.

5. If an error is detected on the display test, perform the Display Troubleshooting

Procedures in Section 2.8.

6. If an error is detected on the CD-ROM/DVD-ROM test, perform the Optical Drive

Troubleshooting Procedures in Section 2.9.

7. If an error is detected on the modem test, perform the Modem Troubleshooting

Procedures in Section 2.10.

8. If an error is detected on the LAN test, perform the LAN Troubleshooting Procedures

in Section 2.11.

9. If an error is detected on the Bluetooth test, perform the Bluetooth Troubleshooting

Procedures in Section 2.12.

10. If an error is detected on the Wireless LAN test, perform the Wireless LAN

Troubleshooting Procedures in Section 2.13.

11. If an error is detected on the sound test, perform the Sound Troubleshooting

Procedures in Section 2.14.

12. If an error is detected on SD card, perform the SD Card Slot Troubleshooting

Procedures in Section 2.15.

13. If an error is detected on PCI ExpressCard, perform the PCI ExpressCard Slot

Troubleshooting Procedures in Section 2.16.

14. If an error is detected on Fingerprint sensor, perform the Fingerprint sensor

Troubleshooting Procedures in Section 2.17.

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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: Icons in the LCD Check
Procedure 2: Error Code Check
Procedure 3: Connection Check
Procedure 4: Charge Check
Procedure 5: Replacement Check

Procedure 1 Icons in the LCD Check

The following Icons in the LCD 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 in the LCD as listed in the tables below. To check the power supply status,
install a battery pack and connect an AC adaptor.

Table 2-1 Battery icon

Battery icon Power supply status

Lights orange Battery has been charging and AC adapter is connected.
Lights green Battery is fully charged and AC adapter is connected.
Flashes orange Battery charge is low. The AC adaptor must be connected to recharge

the battery.

Doesn’t light Any condition other than those above.

Table 2-2 DC IN icon

DC IN icon Power supply status

Lights green DC power is being supplied from the AC adapter.
Flashes orange There is a problem with the power supply.
Doesn’t light Any condition other than those above.

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2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures

Procedure 2 Error Code Check

If the power supply microprocessor detects a malfunction, it indicates the error code as
shown below.

The error code begins with the least significant digit.

Table 2-3 Error code

Error code Where Error occurs

1*h AC Adaptor
2*h 1st battery
3*h 2nd Battery

4*h S3V output (P60)
5*h E5V output (P61)
6*h E3V output (P62)
7*h 1R5-E1V output (P63:CH0)
8*h 1R8-B1V output (P64:CH0)
9*h PPV output (P65:CH0)
A*h PTV output (P66:CH0)
B*h 1R5-E1V output (P63:CH1)
C*h 1R8-B1V output (P64:CH1)
D*h PPV output (P65:CH1)
E*h PTV output (P66:CH1)

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2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting

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

Error code Meaning

10h AC Adaptor output voltage is over 16.5V.
11h Advanced Port Replicator III Plus voltage is over 16.5V.
12h Current from the DC power supply is over 7.00A.
13h Current from the DC power supply is over 0.5A when there is no loa d.
14h Correction value of 0[A] is out of designed value.

 1st Battery

Error code Meaning

22h 1st battery discharge current over 0.5A when there is no load.
23h 1st battery charge current is over 4.3A in charging.

 2nd Battery

24h Correction value of 0[A] is out of designed value.
25h 1st battery charge current is over 0.3A in not charging.

Error code Meaning

32h Secondary battery discharge current is over 0.5A when there is no

load.
33h Secondary battery charge current is over 3.5A in charging.
34h Correction value of 0[A] is out of designed value.
35h Secondary battery charge current is over 0.3A in not charging.

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2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures

 S3V output (P60)

Error code Meaning

40h S3V voltage is 3.47V or less when the computer is powered on/off.
45h S3V voltage is 3.14V or less in normal conditions.

46h S3V voltage is 3.14V or less at power on.

 E5V output (P61)

Error code Meaning

50h E5V voltage is over 6.00V when the computer is powered on/off.
51h E5V voltage is 4.50V or less in normal conditions when the computer

is powered on.
52h E5V voltage is 4.50V or less at power on.
54h E5V voltage is 4.50 V or less when EV is maintained and “OUTV1

power = EV power” is specified.

 E3V output (P62)

Error code Meaning

60h E3V voltage is over 3.96V when the computer is powered on/off.
61h E3V voltage is 2.81V or less in normal conditions when the computer

is powered on.
62h E3V voltage is 2.81V or less at power on.
64h E3V voltage is 2.81 V or less when EV is maintained and “OUTV2

power = EV power” is specified.

 1R5-E1V output (P63:CH0)

Error code Meaning

70h 1R5-E1V voltage is over 1.80V when the computer is powered on/off.
71h PPV voltage is 0.56V or less in normal conditions when the computer

is powered on.
72h PPV voltage is 0.56V or less at power on.

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2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting

 1R8-B1V output (P64:CH0)

Error code Meaning

80h 1R8-B1V voltage is over 2.16V when the computer is powered on/off.
81h 1R8-B1V voltage is 1.53V or less in normal conditions when the

computer is powered on.
82h 1R8-B1V voltage is 1.53V or less at power on.
84h 1R8-B1V voltage is 4.50V or less when EV is maintained and

“OUTV4 power = BV power” is specified.

 PPV output (P65: CH0)

Error code Meaning

90h PPV voltage is over 1.80V when the computer is powered on/off.
91h PPV voltage is 0.32V or less in normal conditions when the computer

is powered on.

92h PPV voltage is 0.32V or less at power on.

 PTV output (P66:CH0)

Error code Meaning

A0h PTV voltage is over 1.32V when the computer is powered on/off.
A1h PTV voltage is 0.85V or less in normal conditions when the computer

A2h PTV voltage is 0.85V or less at power on.

 1R5-E1V output (P63:CH1)

Error code Meaning

B0h 1R5-E1V voltage is over 1.80V when the computer is powered on/off.
B1h 1R5-E1V voltage is 1.275V or less in normal conditions when the

B2h 1R5-E1V voltage is 1.275V or less at power on.
B3h 1R5-E1V voltage is 1.275V or less when EV is maintained and

is powered on.

computer is powered on.

“OUTV7 power = EV power” is specified.

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2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures

 1R8-B1V output (P64:CH1)

Error code Meaning

C0h 1R8-B1V voltage is over 2.16V when the computer is powered on/off.
C1h 1R8-B1V voltage is 1.53V or less in normal conditions when the

computer is powered on.
C2h 1R8-B1V voltage is 1.53V or less at power on.
C4h 1R8-B1V voltage is 1.53V or less when BV is maintained and “OUTV8

power = EV power” is specified.

 PPV output (P65:CH1)

Error code Meaning

D0h PPV voltage is over 1.80V when the computer is powered on/off.
D1h PTV voltage is 0.32V or less in nor mal conditions when the computer

is powered on.

D2h PTV voltage is 0.32V or less at power on.

 PTV output (P66:CH1)

Error code Meaning

E0h PTV voltage is over 1.32V when the computer is powered on/off.
E1h PTV voltage is 1.53V or less in normal conditions when the computer

E2h PTV voltage is 1.53V or less at power on.

is powered on.

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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 the following step:

 Replace the battery pack with a new one. If the error still exists, 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 supply wiring diagram is 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 jack 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 jack is firmly connected to the connector CN8800 on the

system board.

• If the DC IN jack is not firmly connected, go to Procedure 5.

• If it is connected, go to Check 4.

Check 4 Use a multimeter to make sure the AC adaptor output voltage is close to 15 V. If

the output is several percent lower than 15 V, go to Check 5. If the output is close
to 15 V, go to Check 6.

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

• If the DC IN icon does not light, go to Procedure 5.

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

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

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

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2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting

Procedure 4 Charge Check

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

1. Reinstall the battery pack.

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

Procedure 5.

3. Run the Diagnostic test, go to System test and execute subtest 04 (Quick charge)

described in Chapter 3.

4. When charge is complete, the diagnostics test displays the result code. Check the

result code against the table below and perform any necessary check.

Table 2-4 Result code

Result code Contents Check items

0 The battery is charging normally. Normal
1 The battery is fully charged. Normal
2 The AC adaptor is not attached. Check 1
3 The AC adaptor’s output voltage is not normal. Check 1
4 The battery is not installed. Check 2
5 The battery’s output voltage is not normal. Check 3
6 The battery’s temperature is not normal. Check 4
7 A bad battery is installed. Check 2
8 Any other problems. Check 5

Check 1 Make sure the AC adaptor and AC power cord are firmly plugged into the DC IN

socket and the wall outlet. If these cables are connected correctly, replace the AC
adaptor (and/or AC power cord, if necessary).

Check 2 Make sure the battery 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. If the battery pack is still not charged, go to Check 4.

Check 4 The battery’s temperature is too hot or cold. Return the temperature to a normal

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

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

go to Procedure 5.

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2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures

Procedure 5 Replacement Check

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

Check 1 Replace the AC adaptor with a new one. If the AC adaptor is still not functioning

properly, perform Check 2.

Check 2 Replace the system board with a new one following the steps described in Chapter

4, Replacement Procedures.

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

2.4 System Board Troubleshooting

This section describes how to determine if the system board and CPU are defective or not
functioning properly. 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: Printer Port LED Check on Boot Mode
Procedure 3: Diagnostic Test Program Execution Check
Procedure 4: Replacement Check

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

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 Toshiba MS-DOS or Windows XP is properly loaded, go to Procedure 3.

Check 1 If one of the following error messages appears on the screen, press F1 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 F1 as the message instructs, returns all system settings to their default
values. Then the system reboots.

If error message (b) appears often when the power is turned on, replace the RTC

battery. If any other error message displays, perform Check 2.

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

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

(b) *** Bad RTC battery ***

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

(c) *** Bad configuration ***

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

(d) *** Bad memory size ***

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

(e) *** Bad time function ***

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

(f) *** Bad check sum (CMOS) ***

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

(g) *** Bad check sum (ROM) ***

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

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

Check 2 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) appears, go to

Procedure 4.
If the error message (18) appears, go to the Keyboard Troubleshooting Procedures

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

Procedures in Section 2.6.
If the error message (21) appears, go to the Optical Drive Troubleshooting

Procedures in Section 2.9.

(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) Built-in HDD ERROR
(21) Select Bay ERROR
(22) TIMER INTERRUPT ERROR
(23) RTC UPDATE ERROR

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

Procedure 2 Printer Port LED Check on Boot Mode

The printer port LED displays the IRT status and test status by turning lights on and off as an
eight-digit binary value for boot mode. Figure 2-2 shows the printer port LED.

NOTE: You need Advanced Port Replicator III Plus in this test.

Figure 2-2 Printer port LED board

Figure 2-3 shows the function of the printer port LED.

Figure 2-3 Function of Printer port LED

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

To use the printer port LED, follow the steps below:

1. Turn on the computer’s power and set it to boot mode.

2. Turn off the computer’s power.

3. Connect Advanced Port Replicator III Plus to PC and plug the printer port LED into

the parallel port of Advanced Port Replicator III Plus.

4. While holding down the space bar, turn on the computer’s power.

5. Read the LED status from left to right.

6. Convert the status from binary to hexadecimal notation.

7. If the final LED status is FFh (normal status), go to Procedure 4.

8. If the final LED status matches any of the test status values in Table 2-3, perform

Check 1.

NOTE: If an error condition is detected by the IRT test, the printer port LED displays the
status for the last test item which ended correctly. For example, when the printer port
LED displays 0Ch and halts, the IRT test has already completed the Vector initialization.
In this instance, the IRT indicates an error has been detected during the NDP
initialization.

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

Table 2-5 Printer port LED boot mode status (1/9)

LED Status Test item Contents

Prohibition of APIC
Initialization of MCH, ICH
Initialization of Super I/O

Dummy read of 3rd Bus data

B0h PIT CH0 initialization (for HOLD_ON)

BIOS rewrite factor flag initialization
CHECK SUM CHECK Transition to protected mode

B1h

B2h Initialization of SC HLT at LED=B3H or B4, when error occurs

Key input (skipped when returned from

B5h Enables CPU cache
B6h Security check

BIOS rewrite request check If Checksum check error occurred on except

B7h Transits to System BIOS IRT

BIOS rewrite process
Initialization of ICH. D31
DRAM configuration
Permission of cache (L1 cache only)
Memory clear
Transition to real mode and copy of BIOS

Permission of A20 and clear of software
reset bit

Initialization of debug port (For models
supporting debug port)

Setting of printer port (For models
supporting printer port)

EC/KBC rewrite check

S3)

to RAM

Boot block checksum (skipped when
returned from S3)
Halts when error occurs

Checksum other than boot block (skipped
when returned from S3)

If “rewrite” is requested, go to “BIOS rewrite
process”.

When a key is pressed, check if it is Tilde
key or Tab key. (skipped when returned from
S3)

Boot Block or rewrite is required by user, go
to “BIOS rewrite process”.

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

Table 2-5 Printer port LED boot mode status (2/9)

LED Status Test item Contents

B9h Saving of key scan code

Setting of TASK_1ms_TSC
FAN control
Sound initialization (for BEEP sound) Cancel of sound mute
Setting of volume to max (model that can

control volume)

When BIOS, EC/KBC rewriting is

requested

When BIOS renewal is prohibited Blinks orange (cycle:8s, on:4s, off:4s) HLT

When BIOS ROM is abnormal Blinks orange (cycle:2s, on:1s, off:1s)
Key input Prohibition of USB
BEEP
Waiting for Key input
Reading of

CHGBIOSA.EXE/CHGFIRMA.EXE
Setting of parameters for 2HD (1.44MB)
Reading of first sector, If it is the data of

Setting of parameters for 2DD (720KB)
Retrieval of “CHGBIOSA.EXE” from the

Blinks green (cycle:2s, on:1s, off:1s)

after BEEP is sounded for 30s (LED=BBH))

FDC RESET

1.44MB (2HD), the media type is definite.

root directory.
Calculation of directory start head and

sector
Read 1 sector of the root directory
Retrieval of entry of “CHGBIOSA.EXE”

/“CHGFIRMA.EXE” from the sector

read.
Reading of EXE header of

“CHGBIOSA.EXE” and “CHGFIRMA.EXE”
Key input when error occurred

Execution of “CHGBIOSA.EXE” and
“CHGFIRMA.EXE”

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

Table 2-5 Printer port LED boot mode status (3/9)

LED Status Test item Message

00h

Initialization of PIT channel 1
01h

02h

Prohibition of cache
Permission of L1/L2 cache in

FlashROM area
Initialization of H/W (before

DRAM recognition)
Initialization of ICH.D30.Func0
Initialization of ICH.D31.Func0
Initialization of ICH.D31.Func1/2
Initialization of USB Controller
Initialization of ICH.D31.Func3
Initialization of ICH Audio
Initialization of TI Controller

Check of DRAM type and size
(at cold boot)

SM-RAM stack area test HLT when DRAM size is 0

Cache configuration

Initialization of MCH

(Setting the refresh interval to “30μs”)
When unsupported memory is connected, becoming

HLT after beep sound

HLT When it can not be used as a stack

Cache permission
CMOS access test

(at cold boot)

Battery level check of CMOS
CMOS checksum check
Initialization of CMOS data (1)
Setting of IRT status (Setting of boot status and IRT busy flag, The rest bits

Storing DRAM size in CMOS

03h Resume branch (at cold boot)

(HLT when an error is detected)

are 0)

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 LED=7AH)

SM-RAM checksum check (Resume error

LED=73H)

Check of memory configuration change (Resume

error LED=73H)

RAM area checksum check in system BIOS

(Resume error LED=79H)

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

Table 2-5 Printer port LED boot mode status (4/9)

LED Status Test item Contents

(03h)

04h Security check
05h SMRAM initialization

APIC initialization
WakeUp factor check
SMRAM base rewriting and CPU state

Permission of SMI based on ASMI

06h Initialization of devices which need

Setting of test pattern to channel 0 of

Check whether the set test pattern can be

Initialization of PIT channel 0, Setting of

Initialization of PIT channel 2, Setting of

Test of PIT channel 1 (Check whether the

Test of PIT channel 2 (Check whether the

CPU clock measurement
Check of parameter block A
Permission of SMI except auto-off function
Judging of destination (Japan or except

Expansion memory checksum check

resume error (Resume error LED=76H)

PnP RAM checksum check (Resume

error LED=77H)
Transition to RESUME-MAIN
Resume error process Reset of CPU clock to low
Prohibition of all SMI
Clearance of resume status
Return to ROM
Turning area of C0000h to EFFFFh to PCI

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

map saving for BIOS

initialization before PCI bus initialization.

HLT, when error occurs)

PIT test (Cold boot only) and initialization

PIT#0

read

timer interruption interval to 55ms

the sound generator frequency to 664Hz

refresh signal works normally in 30 micro­s refresh interval.)

out.

speaker gate works normally.)

Japan) based on DMI data

HLT, when the time is

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

Table 2-5 Printer port LED boot mode status (5/9)

LED Status Test item Contents

(06h) Battery discharging current control (1CmA).

Dividing procedures for time measuring by

IRT
Setting for clock generator
Check of CMOS default setting

Default is set, when there are Bad Battery

and Bad CheckSum (ROM, CMOS).
Control of excess of rated input power
AC adapter rated over current control

CPU Initialization

Micro code update

Judging of CPU type

Geyserville support check

Setting of CPU clock to “high"

07h Saving memory configuration to buffer

Reading of EC version
Update of flash ROM type
ACPI table initialization (for execution of

option ROM)

Initialization of devices which need

initialization before PCI bus initialization

Setting of AC’97/Azalia operation mode

KBC initialization
VGA display off, Reset control

PCI Express initialization
Sound initialization

HC initialization and Device recognition
PIC initialization
PIC test
Password Initialization

Setting of IDE device operation mode

Initialization of temperature control

information

Control of built-in LAN permission/

prohibition

PC multi-box status acquisition (For models

supporting Select Bay)

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

Table 2-5 Printer port LED boot mode status (6/9)

LED Status Test item Contents

08h

Initialization of LAN information
WakeUp factor check

09h

CMOS data initialization (2)
PnP initialization
Setting of setup items

H/W setting based on resource

0Ah

PCI automatic configuration Making of work for automatic configuration
Acquisition of PCI IRQ

PCI bus initialization (connection of DS
Bus)

Task generation for waiting INIT_PCI
completion

Waiting for the completion of Multi-box
status check

Task generation for waiting PnP resource
making completion

PnP H/W initialization

PC card slot initialization
SIO initialization (For models supporting

SIO)
FIR initialization (For models supporting FIR)

Configuration
Saving of VGA configuration result

0Bh

HDD initialization sequence start

Enabling power off
Output code generation

0Ch FIRST_64KB_CHECK (Check of first 64KB memory)
0Dh INIT_INT_VECTOR (Initialization of vectors)
0Eh INIT_NDP (Initialization of NDP)

Initialization of H/W needed after PCI
configuration

Task generation for waiting
PCI_CONFIGURATION completion

Printer port setting (model supporting Printer
port)

FDD initialization sequence start (model
supporting built-in FDD)

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

Table 2-5 Printer port LED boot mode status (7/9)

LED Status Test item Contents

0Fh INIT_SYSTEM (Initialization of system)

Storing of CMOS error information to

IRT_ERR_STS_BUF

Controlling CD POWER SW (model supporting CD

play)
Timer initialization start
EC initialization & Reading of battery information
Update of system BIOS (Update EDID information for

LCD)

10h INIT_DISPLAY (Waiting for VGA chip initialization completion, VGA

BIOS initialization)

11h
13h DISP_LOGO (Logo displaying) (Starting of logo display waiting

14h SYS_MEM_CHECK (Check of conventional memory) (Boot)
15h EXT_MEM_CHECK (Exception check in protected mode) (Boot)
16h INIT_SYS_MEM

18h CHK_DMA_PAGE (Check of DMA Page Register) (Boot)

19h CHECK_DMAC (Check of DMAC) (Boot)
1Ah INIT_DMAC (Initialization of DMAC) (Boot)
1Bh CHECK_PRT (Check of printer existence) (For models supporting

1Ch CHECK_SIO (Check of SIO) (model supporting SIO)
1Dh

1Eh BOOT_PASSWORD (Check of password)

Calling VGA BIOS

Process of DIAGNOSTIC
inspection result display

Waiting for VGA power-on
Waiting for Display access completion

LED=25H (unused))

(Initialization of conventional memory) (Reboot)
(LED=17h if error occurred during exception check in
protected mode)

Printer port)

(When DIAGNOSTIC mode is permitted)

Waiting for FDD initialization completion (For models

supporting built-in FDD)
(In the case of “Reboot”) Waiting for HDD initialization completion
Check of key input during IRT (waiting for KBC

initialization completion)
I/O LOCK Processing (model supporting I/O LOCK)
Initialization of ATA priority

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

Table 2-5 Printer port LED boot mode status (8/9)

LED Status Test item Contents

(1Eh) (In the case of “Boot”) Check of key input during IRT (waiting for KBC

initialization completion)

I/O LOCK Processing (For models supporting I/O LOCK)

TPM Initialization (model supporting TPM)
1Fh EX_IO_ROM_CHECK (Check of option I/O ROM)
20h PRE_BOOT_SETUP Saving of value in 40:00h (For SIO saving/restoring)

Setting of font address for resume password
Setting of repeat parameter for USB KB
Acquisition of keys pressed during IRT
Storing of T_SHADOW_RAM_SIZE

Update of system resource before boot

Rewriting of memory map data of INT15h E820h

Waiting for AC-Link initialization completion (For models

Input of password (waiting for HDD initialization
completion)

function

supporting AC-Link)

Updating of table for DMI

Copy of ACPI table to top of expansion memory

Waiting for writing of PSC version to BIOS completion

Waiting for clock generator setting completion

When error occurred, halts at LED=21H

Waiting for serial port initialization completion (For

models supporting SIO)

Cancel of NMI Mask

Taking out TIT check sum

Clear of the IRT flag on Runtime side

Update of check sum on Runtime side

Hibernation branch (For models supporting BIOS

Hibernation)

Initialization of Bluetooth (For models supporting

Bluetooth)
Check of existence of object maintenance cards
Prohibition of unused PC cards
Setting Wakeup status data for ACPI

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

Table 2-5 Printer port LED boot mode status (9/9)

LED Status Test item Contents

(20h)

Notifies the DVI connection status to VGA BIOS

Setting of battery save mode
Setting of date
Waiting for Bluetooth initialization completion

Update of DMI Wakeup factor, Update of SM-

PCI device configuration space close
Cache control
Process for CPU (Make the CPU clock to be set

Waiting of motor-off completion of disabled HDD
Final setting of FDD information
Post processing of PRE_BOOT_SETUP

HW initialization before Boot, Waiting for

initialization completion

(For models supporting DVI)

(For models supporting Bluetooth)

BIOS structure table

by SETUP)

Clears PWRBTN_STS

Enables POWER Button
22h Initialization of SC
24h

FFh End

Clearness of IRT status
Update of Checksum on Runtime

side

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

Check 1 If error code 1Eh or 20h is displayed, go to the following Sections:

Section 2.6 HDD Troubleshooting”

Check 2 If the final status of the LED are the followings, perform Procedure 4.

Printer port LED error status

Error Content

B3H or B4H Initialization of SC error

BBH Prohibition of BIOS update (*1)

17H Exception check error
20H Clock generator setting error

(*1) Check the situation of security because the setting of security may prohibit the renewal

of BIOS when the LED status is BBh.

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures

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. Async test

7. Hard Disk test

8. Real Timer test

9. NDP test

10. Expansion test

11. CD-ROM/DVD-ROM test

12. Wireless LAN test

13. Sound test

14. LAN/Modem/Bluetooth/IEEE1394 test

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

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting

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 their 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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2.5 USB FDD Troubleshooting 2 Troubleshooting Procedures

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

Procedure 1 USB FDD Head Cleaning Check

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

the test. Clean the USB 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 Troubleshooting Procedures 2.5 USB FDD Troubleshooting

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.

Floppy disk drive test error codes and their status names are listed in Table 2-6. 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 2-6 FDD error code and status

Code Status

01h Bad command error
02h Address mark not found
03h Write protected
04h Record not found
06h Media removed
08h DMA overrun error
09h DMA boundary error
10h CRC error
20h FDC error
40h Seek error
60h Not drive error
80h Time out error

EEh Write buffer error

Check 1 If the following message appears, disable the write protect tab on the floppy disk.

If any other message appears, perform Check 2.

Write protected

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

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2.5 USB FDD Troubleshooting 2 Troubleshooting Procedures

Procedure 3 Connector Check and Replacement Check

The USB FDD is connected to the System Board.
Check 1 When using the USB port, make sure the USB FDD cable is firmly connected to

CN4620 on the GN board or CN4610 on the System Board and the cable is firmly
connected to CN9501 on the system board and CN9511 on the GN board.

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

Check 2 The USB FDD or USB FDD cable 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 GN board or GN cable may be defective or damaged. Replace it with a new

one following the steps in Chapter 4, Replacement Procedures. 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 Troubleshooting Procedures 2.6 HDD Troubleshooting

2

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.)

or

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

or

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 .....

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

or

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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2.6 HDD Troubleshooting 2 Troubleshooting Procedures

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.

Check 5 Using the SYS command on the Toshiba MS-DOS system disk, install system

files on the HDD.

If the following message appears on the display, the system files have been
transferred to the HDD. Restart the computer. If the problem still exists, go to
Procedure 3.

System transferred

NOTE: If the computer is running Windows 2000, OSR2 or higher and the hard disk has

more than 512 MB capacity, the FDISK program will ask if you need support for
a partition larger than 2GB. Select Y for large partition support; however, be
sure to read the precaution regarding access by other operating systems.

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2 Troubleshooting Procedures 2.6 HDD Troubleshooting

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. 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 Using the Diagnostics Disk, format the HDD with a low level format option.

Refer to Chapter 3, Tests and Diagnostics for more information about the

diagnostic program.

If the following message appears on the display, the HDD low level format is
complete. Partition and format the HDD using the MS-DOS FORMAT command.

Format complete

If you cannot format the HDD using the Tests and Diagnostic program, go to
Procedure 4.

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2.6 HDD Troubleshooting 2 Troubleshooting Procedures

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.

Replace the HDD with a new one following the instructions in Chapter 4, Replacement
Procedures. The error codes and statuses are listed in Table 2-7. If an error code is not

generated or the problem still exists, go to Procedure 5.

Table 2-7 HDD error code and status

Code Status

01h Bad command error
02h Address mark not found
04h Record not found
05h HDC not reset
07h Drive not initialized
08h Overrun error (DRQ ON)
09h DMA boundary error
0Ah Bad sector error
0Bh Bad track error
10h ECC error
11h ECC recover enable
12h DMA CRC error
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 error
DAh No HDD

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2 Troubleshooting Procedures 2.6 HDD Troubleshooting

Procedure 5 Connector Check and Replacement Check

The HDD may be disconnected, or the HDD or the system board may be damaged.

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

Check 1 Make sure the HDD is firmly connected to CN1850 on the system board.

If any of the connections are 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

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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2.7 Keyboard and Touch pad Troubleshooting 2 Troubleshooting Procedures

2.7 Keyboard and Touch pad Troubleshooting

To determine if the computer’s keyboard or touch pad 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 Check 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 2.7 Keyboard and Touch pad Troubleshooting

Procedure 2 Connector Check an d Replacement Check

The keyboard, touch pad or sensor/switch board may be disconnected or damaged.

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

1. If the keyboard or AccuPoint malfunctions, start with Check 1.

2. If the touch pad malfunctions, start with Check 3.

3. If the power switch, InTouch button or Presentation button malfunctions, start with

Check 5.

Check 1 Make sure the keyboard cable is securely connected to CN3200 on the system

board.

If the connection is loose, reconnect firmly. 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 5.

Check 3 Make sure the touch pad cable is firmly connected to CN3201 on the system

board.

If the connection is loose, reconnect firmly. If there is still an error, go to Check 4.

Check 4 The touch pad or the touch pad 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 5.

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2.7 Keyboard and Touch pad Troubleshooting 2 Troubleshooting Procedures

Check 5 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 Check and Cable Check

Procedure 4: Replacement Check

Procedure 1 External Monitor Check

Connect an external monitor and tun on the computer. If there is no problem on it, the
internal LCD may be defective. Go to Procedure 3. If there is any problem on the external
monitor, the system board may be defective. 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.

Procedure 3 Connector Check an d Cable Check

Check 1 The LCD, FL, FL Inverter Board and System Board are connected by the HV

cable and LCD/FL cable as shown bellow. Check the connections. The
connectors may be disconnected or damaged. Disassemble the computer

following the steps described in Chapter 4, Replacement Procedures.

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2.8 Display Troubleshooting 2 Troubleshooting Procedures

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

Procedure 4 Replacement Check

The FL, FL inverter 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:

1. If the FL does not light, perform Check 1.

2. If characters or graphics are not displayed clearly, perform Check 1.

3. If some screen functions do not operate properly, perform Check 2.

4. If the FL remains lit when the display is closed, perform Check 4.

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 Replace the LCD module with a new one following the instructions in Chapter 4,

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

perform Check 3.

Check 3 Replace the display cable (FL cable and LCD cable) with a new one following the

instructions in Chapter 4, Replacement Procedures and test the display again. If

the problem still exists, perform Check 4.

Check 4 The display controller on the system board may be damaged. Replace the system

board with a new one following the instructions in Chapter 4, Replacement

Procedures.

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2 Troubleshooting Procedures 2.9 Optical Drive Troubleshooting

2.9 Optical Drive Troubleshooting

This section describes how to determine if the optical drive (CD-ROM, DVD-ROM, CD­R/RW&DVD-ROM, DVD Super Multi drive) in the Slim Select Bay is functioning properly.
Perform the steps below starting with Procedure 1 and continue 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 CD-ROM/DVD-ROM test program is stored in the Diagnostics Disk.

For the test, prepare test Media.

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 CD-ROM/DVD-ROM test, go to Procedure 2.

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