Toshiba portege 2000 Service Manual

Toshiba Personal Computer

Portege 2000

Maintenance Manual

TOSHIBA CORPORATION

File Number 960-333

© 2002 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 Portege 2000 Maintenance Manual First edition January 2002

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 Portege 2000series 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/AT, PS/2, OS/2 and VGA are registered trademarks of IBM Corporation. Microsoft and MS-DOS and Windows are registered trademarks of Microsoft Corporation. Intel and Cerelon are registered trademarks, and MMX is a trademark of Intel Corporation. Sound Blaster and Pro are registered trademarks of Creative Technology Ltd. Super I/O and MICROWIRE are registered trademarks of National Semicon d ucto r Cor po rati o n. All other properties are trademarks or registered trademarks of their respective holders.

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Preface

This maintenance manual describes how to perform hardware service maintenance for the Toshiba Personal Computer Portege 2000, referred to as Portege 2000 in this manual.

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

SAFETY PRECAUTIONS

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

DANGER: “Danger” indicates the existence of a hazard that could result in death or serious bodily injury, if the safety instruction is not observed.

WARNING: “Warning” indicates the existence of a hazard that could result in bodily injury, if the safety instruction is not observed.

CAUTION: “Caution” indicates the existence of a hazard that could result in property damage, if the safety instruction is not observed.

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

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

 Be sure to fasten screws securely with the right screwdriver. Be sure to use the PH

Point size “0” and “1” screwdrivers complying with the ISO/DIS 8764-1:1996. 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.

Portege 2000 Maintenance Manual (960-333) iii

The manual is divided into the following parts:

Chapter 1 Hardware Overview describes the Portege 2000 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 assignment ❑ Keyboard scan/character codes ❑ Key layout ❑ Wiring diagrams ❑ BIOS/KBC/EC Update ❑ Reliability ❑ Key FD

iv Portege 2000 Maintenance Manual (960-3 33)

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 Portege 3410CT/3440CT that appears on its display is presented in the type face below:

Format complete System transferred

Portege 2000 Maintenance Manual (960-333) v

Table of Contents

Chapter 1 Hardware Overview

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

1.2 1.8-inch Hard Disk Drive...........................................................................................1-9

1.3 Keyboard..................................................................................................................1-11

1.4 TFT Color Display...................................................................................................1-12

1.5 Power Supply ...........................................................................................................1-14

1.6 Batteries....................................................................................................................1-15

1.7 AC Adapter ..............................................................................................................1-17

Chapter 2 Troubleshooting Procedures

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

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

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

2.4 Main Board Troubleshooting...................................................................................2-15

2.5 USB 3.5” FDD Troubleshooting..............................................................................2-27

2.6 1.8” HDD Troubleshooting......................................................................................2-30

2.7 Keyboard Troubleshooting.......................................................................................2-35

2.8 Display Troubleshooting..........................................................................................2-36

2.9 Touch Pad.................................................................................................................2-38

2.10 Modem .....................................................................................................................2-39

2.11 LAN..........................................................................................................................2-41

2.12 Sound........................................................................................................................2-43

2.13 SD card slot..............................................................................................................2-45

2.14 Wireless LAN Troubleshooting...............................................................................2-46

vi Portege 2000 Maintenance Manual (960-333)

Chapter 3 Tests and Diagnostics

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

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

3.3 Subtest .......................................................................................................................3-7

3.4 System Test................................................................................................................3-9

3.5 Memory Test............................................................................................................3-11

3.6 Keyboard Test..........................................................................................................3-13

3.7 Display Test..............................................................................................................3-16

3.8 USB Floppy Disk Test .............................................................................................3-19

3.9 ASYNC Test ............................................................................................................3-21

3.10 Hard Disk Test .........................................................................................................3-22

3.11 Real Timer Test........................................................................................................3-25

3.12 NDP Test..................................................................................................................3-27

3.13 Expansion Test.........................................................................................................3-28

3.14 Wireless LAN Test Program....................................................................................3-30

3.15 Sound/LAN/Modem Test.........................................................................................3-37

3.16 Error Status Code .....................................................................................................3-39

3.17 HDC Status...............................................................................................................3-41

3.18 FDD Cleaning ..........................................................................................................3-43

3.19 Log Utilities..............................................................................................................3-44

3.20 Running Test............................................................................................................3-46

3.21 Floppy Disk Drive Utilities......................................................................................3-48

3.22 System Configuration...............................................................................................3-54

Chapter 4 Replacement Procedures

4.1 Overview....................................................................................................................4-1

4.2 Battery pack/PC card..................................................................................................4-8

4.3 Memory Module.......................................................................................................4-11

4.4 HDD .........................................................................................................................4-14

4.5 Keyboard/Bottom cover...........................................................................................4-17

4.6 Speaker/RTC battery................................................................................................4-22

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4.7 Wireless LAN board/MDC board/HDD cable.........................................................4-24

4.8 PC card slot ..............................................................................................................4-27

4.9 Main board/FAN .....................................................................................................4-28

4.10 Sound board/SW knob .............................................................................................4-31

4.11 Touch pad/MODEM jack/LED SW membrane.......................................................4-33

4.12 Power Membrane SW/Wireless LAN antenna.........................................................4-37

4.13 LCD mask/FL inverter/LCD/LCD cable..................................................................4-41

4.14 Hinge........................................................................................................................4-47

4.15 Fluorescent Lamp.....................................................................................................4-51

Appendices

Appendix A Handling the LCD Module.........................................................................A-1

Appendix B Board Layout..............................................................................................B-1

Appendix C Pin Assignment .......................................................................................... C-1

Appendix D Keyboard Scan/Character Codes................................................................D-1

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

Appendix F BIOS/KBC/EC Update................................................................................F-1

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

Appendix H Key FD.......................................................................................................H-1

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Chapter 1 Hardware Overview

1 Hardware Overview

1-ii Portege 2000 Maintenance Manual (960- 3 33)

1 Hardware Overview

Chapter 1 Contents

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

1.2 1.8-inch Hard Disk Drive...........................................................................................1-9

1.3 Keyboard..................................................................................................................1-11

1.4 TFT Color Display...................................................................................................1-12

1.4.1 LCD Module.......................................................................................1-12

1.4.2 FL Inverter Board...............................................................................1-13

1.5 Power Supply ...........................................................................................................1-14

1.6 Batteries....................................................................................................................1-15

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

1.6.2 Battery Charging Control ...................................................................1-16

1.6.3 RTC battery ........................................................................................1-16

1.7 AC Adapter ..............................................................................................................1-17

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1 Hardware Overview

Figures

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

Figure 1-2 System units configuration.............................................................................1-4

Figure 1-3 System Block Diagram...................................................................................1-5

Figure 1-4 1.8-inch HDD.................................................................................................1-9

Tables

Table 1-1 1.8-inch HDD dimensions..............................................................................1-9

Table 1-2 1.8-inch HDD Specifications .......................................................................1-10

Table 1-3 LCD module specifications..........................................................................1-12

Table 1-4 FL inverter board specifications...................................................................1-13

Table 1-5 Power supply output specifications..............................................................1-14

Table 1-6 Battery specifications...................................................................................1-15

Table 1-7 Time required for charges of main battery...................................................1-16

Table 1-8 RTC battery charging/data preservation time ..............................................1-16

Table 1-9 AC adapter specifications.............................................................................1-17

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1.1 Features 1 Hardware Overview

1 Features

1.1 Features

The Portage 2000 is a ultra thin and lightweight PC realizing cable-less environment on a table by wireless function with a Pentium III processor realizing high performance.

❑ Microprocessor

Pentium III-ULV

A 750/350MHz Pentium III-ULV processor with a 750/350MHz internal clock, 100MHz bus and 1.10/0.95V core operation.

❑ Cache memory

A Pentium III has 32KB primary cache and 512KB secondary cache (in CPU)

❑ Memory

One memory slot. Memory module can be installed to provide a maximum of 512MB. Memory modules in 256MB size is available.

❑ VRAM

16MB VRAM in ALi/Trident NAPA2T.

❑ HDD

Single 20GB internal drive. 1.8-inch, 8.0mm height

❑ USB FDD

Three-mode 3.5 inch USB FDD supporting 720KB, 1.2MB and 1.44MB formats is prepared as option.

❑ Display

LCD Built-in 12.1 inch, 262,144 colors, XGA (1024×768 dots), thin type low temperature

poly- silicon TFT color display. Video controller is included in North Bridge chip. CRT Supported via an RGB connector

Portege 2000 Maintenance Manual (960-333) 1-1

1 Hardware Overview 1.1 Features

❑ Keyboard

Keyboards has 84(US)/85(UK)-key and supports Windows key.

❑ Touch pad

Touch pad is installed as a pointing device.

❑ Battery

The RTC battery is mounted inside computer. The main battery is a detachable lithium polymer main battery (10.8V-1,600mAh) and the RTC battery is a lithium ion battery(3V-17mAH).

❑ USB (Universal Serial Bus)

Four USB ports supporting USB 2. Two of these are occupied and others are usable.

❑ PC card slot

A PC card Type I or II is acceptable. Supports ToPIC-100 (3.3V/CardBus).

❑ SD card slot

One SD card slot.

❑ Sound system

Incorporates an internal speaker, external monaural microphone connector and stereo headphone connector.

❑ One touch button

Internet button and Mail button are installed.

❑ Built-in Modem

The computer contains a MDC, enabling data and fax communication. It supports ITU-TV.90. 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.

❑ LAN

The internal LAN supports 10BASE-T and 100BASE-TX.

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1.1 Features 1 Hardware Overview

❑ Wireless LAN

The internal wireless LAN supports Mini PCI Type III(802.11B) made by Agere.

❑ FIR(Fast Serial InfraRed) communication port

Fast Serial InfraRed(FIR) communication port supports IrDA1.1. 1.15Mbps or 4Mbps wireless communication is realized by this FIR.

Portege 2000 Maintenance Manual (960-333) 1-3

1 Hardware Overview 1.1 Features

Figure 1-1 shows the front of the computer and Figure 1-2 shows the system units configuration.

Figure 1-1 Front of the computer

Headphone

Fan

RTC Battery

Battery

AC Adapter

Outer Microphone

Intouch

PC Car

Keyboard

Docking I/F Speaker

etwor

SD Card Debug Port

Figure 1-2 System units configuration

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1.1 Features 1 Hardware Overview

Figure 1-3 shows the system block diagram.

Figure 1-3 System Block Diagram

Portege 2000 Maintenance Manual (960-333) 1-5

1 Hardware Overview 1.1 Features

The PC contains the following components.

❑ CPU

Pentium III-ULV

• A 750/350MHz Pentium III processor with a 750/350MHz internal clock,

100MHz bus and 1.10V/0.95 core operation voltage (built-in NDP).

• Internal cache memory: 16KB Data and 16KB Instruction, Write-Back

• Secondary cache memory: 512KB (in CPU)

❑ Memory

One memory slot capable of accepting 256MB-memory module for a maximum of 512MB.

• 3.3V operation

• 140-pin exclusive memory board

• Access time : 6ns

• Memory Supporting PC-133(Operation is PC100)

❑ BIOS ROM (Flash memory)

• 4Mbit (256K×16-bit chip)

− 64KB used for logo

− 64KB used for setup and checksum

− 128KB used for system BIOS

− 64KB used for VGA-BIOS

− 64KB used for ACPI

− 8KB used for PnP

− 8KB used for password security

− 16KB used for booting

− 64KB used for LAN

− 32KB are reserved

• 5.0V operation

• Access time : 120 ns or 90 ns

• Data transfer: 8-bit

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1.1 Features 1 Hardware Overview

❑ PCI chipset

This gate array incorporates the following elements and functions

• North Bridge (Ali/Trident-made M1644T)

− Pentium II/III supported

− Maximum capacity of SDRAM or DDR-SDRAM is 3GB

− DRAM control

− Complies with AGP V2.0 x 4 modes

− Complies with PCI R2.2

− Complies with APCI 1.0b

− PCI Mobile Busy#/STOP# supported

− 555-ball 35x35mm BGA package

• South Bridge (Ali/Trident-made M1535B)

− PCI 3.3V/5V tolerance interface

− Provides Steerable PCI interrupts for PCI device Plug-and-Play

− Enhanced DMA controller

− Interrupt controller

− Counter/timers

− Distributed DMA supported

− PC/PCI DMA supported

− Serial IRQ supported

− Low Pin Count (LPC) host controller

− Plug-and-Play supported

− Built-in KB controller

− ACPI supporting features

− Built-in PCI IDE controller

− USB interface

− SMBus interface

− Super I/O interface

− Audio system

− SW modem interface

− 352-ball (27mm x 27mm) BGA package

❑ VGA controller

Included in North Bridge

❑ PC card controller (YEBISU3S)

• PCI interface (PCI Reision2)

• Chipset interface

Intel serial interrupt

• CardBus/PC Card controller (Yenta Version2.2) :2 slots

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1 Hardware Overview 1.1 Features

Parallel power supply control (Toshiba style) and serial power supply control (Texas Instruments style)

• SD card controller (SDHC Ver.1.2)

• SDIO card controller (Ver.1.0)

• SmertMedia controller (SMHC Ver.01/SMIL 1.0)

• SmertCard interface

• SIO controller

• Docking station interface

Q switch control, reset control

• External device interface

FDD/IDE hot plugging and removal control

❑ Other main system chips

• EC/KBC (Mitsubishi-made LPC microcontroller M306K5F8LRP x 1)

• PSC (TMP87PM48U x 1)

• Temperature sensor (ADM1032 x 1)

PROM (BR93LC46F-Q (used for LAN MAC address))

• E

❑ Modem controller

Supported by MDC. Using of the secondary AC97 Line

❑ LAN controller (MOAB-made Intel:82550PM)

Controls LAN, supports 100Base-TX and 10Base-T.

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1.2 1.8-inch Hard Disk Drive 1 Hardware Overview

1.2 1.8-inch Hard Disk Drive

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

Figure 1-4 shows a view of the 1.8-inch HDD and Tables 1-1 and 1-2 list the specifications.

Figure 1-4 1.8-inch HDD

Table 1-1 1.8-inch HDD dimensions

Standard value

Parameter

Outline Width (mm) 54.0 dimensions Height (mm) 8.0 Depth (mm) 78.5 Weight (g) 62 (MAX)

TOSHIBA

MK2003GAH

Portege 2000 Maintenance Manual (960-333) 1-9

1 Hardware Overview 1.2 1.8-inch Hard Disk Drive

Table 1-2 1.8-inch HDD Specifications

Specification

Parameter

Storage size (formatted) 20GB Speed (RPM) 4,200 Data transfer speed (Mbits/s) 115.6 to 204.4 Interface transfer rate (MB/s) 100 Track density

Track/mm(TPI) Bit/mm Access time (msec)

Track to track Average time Max seek

Start time (sec) 3.5 (Typ.)

TOSHIBA

MK2003GAH

2237 (56.8K) max.

24.4K(621K) max.

3 15 26

20 (Max.)

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1.3 Keyboard 1 Hardware Overview

1.3 Keyboard

The keyboard is mounted 84(US)/85(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. See Appendix E about a layout of the keyboard.

Portege 2000 Maintenance Manual (960-333) 1-11

1 Hardware Overview 1.4 TFT Color Display

1.4 TFT Color Display

The TFT color display consists of a LCD module and FL inverter board.

1.4.1 LCD Module

The LCD module used for the TFT color display uses a backlight as the light source and can display images and characters of 262,144 colors with 1024×768 resolution. The video controller is incorporated into the North Bridge (M1644M) chip and can control both internal and external XGA-support displays simultaneously.

Table 1-5 shows list the specifications.

Table 1-3 LCD module specifications (12.1 TFT)

Specifications Item

VF2095P01

Number of Dots Dot spacing (mm) 0.24(H) x 0.24(V) Display range (mm) 245.76(H) x 184.32(V) Outline

dimensions

267.4(w) x 197.5(H) x 5.55Max(D)

1024×768

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1.4 TFT Color Display 1 Hardware Overview

1.4.2 FL Inverter Board

The FL inverter board supplies a high frequency current to illuminate the LCD module FL. Table 1-4 lists the FL inverter board specifications.

Table 1-4 FL inverter board specifications

Specifications Item

UA2040P02

Input Voltage (V) DC 5 Output

Voltage (V) 750 Current MAX (mA) 4.22 Current MIN (mA) 0.412

Portege 2000 Maintenance Manual (960-333) 1-13

1 Hardware Overview 1.5 Power Supply

1.5 Power Supply

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

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

2. Detects DC output and circuit malfunctions.

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

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

5. Turns the power supply on and off.

6. Provides more accurate detection of a low battery.

7. Calculates the remaining battery capacity.

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

Table 1-5 lists the power supply output specifications.

Table 1-5 Power supply output specifications

Name

PCOREV

PGTLV B1R8V 1.8

B3V

B2R5V

P3V B5V

VCC

Voltage

[V]

1.35±0.1V

1.50±3%

3.30±5%

2.5±5%

3.30±5%

5.00±5%

Name/Use

PⅢ-ULV PⅢ-ULV , M1644 M1644

M1644,CLKGen(ICS94258), Memory slot1/2, YEBISUSS, PCMCIA slot1, MDC(Asky), LAN(REL8139CL)

M1644M, CLKGen(ICS94258) CPU(ADM11032), M1535, LCD, BIOS(TC58F401FT),

RTC(bq3285LD), Sound(YMF753),Mini PCI(Wireless LAN) M1644, PCMCIA slot1 M1535, FLINV, YEBISUSS, Sound(YMF753), HDD, CD-R/W, USB,

FAN

SNDVCC

S5V

5.00±5%

Sound(MMM1517) CPU(MAX6501), SB(M1535)

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1.6 Batteries 1 Hardware Overview

1.6 Batteries

The PC has the following two batteries.

❑ Main battery ❑ Real time clock (RTC) battery

Table 1-6 lists the specifications for these two batteries.

Table 1-6 Battery specifications

Battery Name Battery Element Output Voltage Capacity

Main battery (XM2043P02) Lithium ion 10.8V 1600mAh Real time clock (RTC) battery Nickel hydride 3.0 V 17 mAh

1.6.1 Main Battery

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

Portege 2000 Maintenance Manual (960-333) 1-15

1 Hardware Overview 1.6 Batteries

1.6.2 Battery Charging Control

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

❑ Quick Battery Charge

When the AC adapter is connected, normal charging is used while the system is turned on and quick charge is used while the system is turned off or in suspend mode. (See Table 1-7)

Table 1-7 Time required for charges of main battery

uick charge

bout 2 hours

Quick battery charge is stopped in the following cases.

1. The main battery is fully charged

2. The main battery is removed

3. Main battery or AC adapter voltage is abnormal

4. Charging current is abnormal

❑ Trickle charge

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

1.6.3 RTC Battery

The RTC battery provides the power supply to maintain the date, time, and other system information in memory. Table 1-8 lists the battery charging time and data preservation times.

Table 1-8 RTC battery charging/data preservation time

Data preservation time (when fully charged) 1 month

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1.7 AC Adapter 1 Hardware Overview

1.7 AC Adapter

The AC adapter is also used to charge the battery. Table 1-9 lists the AC adapter specifications.

Table 1-9 AC adapter specifications

Parameter Specification

Input voltage AC 90 to 264V Input frequency 47Hz/63Hz Input current(MAX) 1.2A (100VAC) Output voltage DC 15V Output current 3.0A

Portege 2000 Maintenance Manual (960-333) 1-17

1 Hardware Overview 1.7 AC Adapter

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