Toshiba satellite a80, satellite a85 Service Manual

Toshiba Personal Computer

Satellite A80/A85

Maintenance Manual

TOSHIBA CORPORATION

[CONFIDENTIAL]

Copyright

© 2004 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 Satellite A80/A85 Maintenance Manual

First edition September 2004

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 A80/A85 Series at the time of this manual's production. However, succeeding computers and manuals are subject to change without notice. Therefore, Toshiba assumes no liability for damages incurred directly or indirectly from errors, omissions, or discrepancies between any succeeding product and this manual.

Trademarks

IBM is a registered trademark, and OS/2 and PS/2 are trademarks of IBM Corporation. Microsoft, MS-DOS, Windows, DirectSound and DirectMusic are registered trademarks of Microsoft Corporation.

Intel and Pentium are registered trademarks, and SpeedStep is a trademark of Intel Corporation. Sound Blaster is a registered trademark of Creative Technology Ltd.

Centronics is a registered trademark of Centronics Data Computer Corporation. Photo CD is a trademark of Eastman Kodak.

All other properties are trademarks or registered trademarks of their respective holders.

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Satellite A80/A85 Maintenance Manual

Preface

This maintenance manual describes how to perform hardware service maintenance for the Toshiba Personal Computer Satellite SATELLITE A80/A85, referred to as the A80/A85 Series in this manual.

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

SAFETY PRECAUTIONS

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

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

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

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

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

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

Be sure to fasten screws securely with the right screwdriver. If a screw is not fully fastened, it could come loose, creating a danger of a short circuit, which could cause overheating, smoke or fire.

If you replace the battery pack or RTC battery, be sure to use only the same model battery or an equivalent battery recommended by Toshiba. Installation of the wrong battery can cause the battery to explode.

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The manual is divided into the following parts:

Chapter 1 Hardware Overview describes the A80/A85 Series system unit and each FRU.

Chapter 2 Troubleshooting Procedures explains how to diagnose and resolve FRU problems.

Chapter 3 Test and Diagnostics describes how to perform test and diagnostic operations for maintenance service.

Chapter 4 Replacement Procedures describes the removal and replacement of the FRUs.

Appendices The appendices describe the following:

Handling the LCD module

Board layout

Pin assignments

Keyboard scan/character codes

Key layout

Screw torque list

Reliability

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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

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Satellite A80/A85 Maintenance Manual

Table of Contents

Chapter 1 Hardware Overview
1.1	Features............................................................................................................................	1-1
1.2	System Unit......................................................................................................................	1-5
1.3	2.5-inch Hard Disk Drive.................................................................................................	1-9
1.4	Removable Drives..........................................................................................................	1-10
1.5	Power Supply.................................................................................................................	1-16
1.6	Batteries .........................................................................................................................	1-18

Chapter 2 Troubleshooting Procedures
2.1	Troubleshooting Introduction ..........................................................................................	2-1
2.2	Troubleshooting Flowchart..............................................................................................	2-2
2.3	Power Supply Troubleshooting .......................................................................................	2-7
2.4	Display Troubleshooting................................................................................................	2-12
2.5	Keyboard Troubleshooting ............................................................................................	2-15
2.6	External USB Devices Troubleshooting........................................................................	2-17
2.7	TV-Out Failure Troubleshooting ...................................................................................	2-19
2.8	Printer Port Troubleshooting .........................................................................................	2-21
2.9	TouchPad Troubleshooting............................................................................................	2-23
2.10	Speaker Troubleshooting ...............................................................................................	2-25
2.11	Optical Drive Troubleshooting ......................................................................................	2-27
2.12	Modem Troubleshooting................................................................................................	2-30
2.13	PCMCIA Troubleshooting.............................................................................................	2-32
2.14	IEEE 1394 Troubleshooting ..........................................................................................	2-34
2.15	Wireless LAN Troubleshooting.....................................................................................	2-36

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Chapter 3 Tests and Diagnostics
3.1	The Diagnostic Test .........................................................................................................	3-1
3.2	Executing the Diagnostic Test..........................................................................................	3-2
3.3	Config Check Test............................................................................................................	3-6
3.4	DMI Check Test ...............................................................................................................	3-7
3.5	PIO Loopback Test...........................................................................................................	3-8
3.6	IEEE 1394 Test ................................................................................................................	3-9
3.7	Speaker Audio Test ........................................................................................................	3-10
3.8	Fan ON/OFF Test...........................................................................................................	3-11
3.9	Main Battery Charge Test ..............................................................................................	3-12
3.10	FDD Test ........................................................................................................................	3-13
3.11	CD-ROM Test ................................................................................................................	3-14
3.12	Keyboard Test ................................................................................................................	3-15
3.13	Mouse (Pad) Test ...........................................................................................................	3-17
3.14	LCD Pixels Mode Test...................................................................................................	3-19
3.15	Lid Switch Test ..............................................................................................................	3-20
3.16	HDD R/W Test...............................................................................................................	3-21
3.17	LAN Test........................................................................................................................	3-23
3.18	RTC Test ........................................................................................................................	3-25
3.19	CD Control Button Test .................................................................................................	3-26

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Chapter 4 Replacement Procedures
4.1	General.............................................................................................................................	4-1
4.2	Battery..............................................................................................................................	4-7
4.3	PC Card............................................................................................................................	4-9
4.4	HDD...............................................................................................................................	4-11
4.5	Optical Drive Module ....................................................................................................	4-13
4.6	Optical Drive..................................................................................................................	4-15
4.7	Wireless LAN Unit ........................................................................................................	4-17
4.8	Expansion Memory........................................................................................................	4-20
4.9	Keyboard........................................................................................................................	4-23
4.10	Modem ...........................................................................................................................	4-26
4.11	Display Assembly ..........................................................................................................	4-28
4.12	Touch Cover...................................................................................................................	4-31
4.13	Touch Pad ......................................................................................................................	4-34
4.14	Speakers .........................................................................................................................	4-36
4.15	System Board.................................................................................................................	4-37
4.16	Fan, Heat Sink, & CPU..................................................................................................	4-39
4.17	Display Mask .................................................................................................................	4-42
4.18	LCD Module ..................................................................................................................	4-44
4.19	FL Inverter Board ..........................................................................................................	4-47

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Appendices
Appendix A	Handling the LCD Module..................................................................................	A-1
Appendix B	Board Layout.......................................................................................................	B-1
Appendix C	Pin Assignments ..................................................................................................	C-1
Appendix D	Keyboard Scan/Character Codes.........................................................................	D-1
Appendix E	Key Layout ..........................................................................................................	E-1
Appendix F	Series Screw Torque List ....................................................................................	F-1
Appendix G	Reliability ............................................................................................................	G-1

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Satellite A80/A85 Maintenance Manual

Chapter 1

Hardware Overview

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1 Hardware Overview

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			1 Hardware Overview
Chapter 1		Contents
1.1	Features......................................................................................................................		1-5
1.2	System Unit................................................................................................................		1-9
1.3	2.5-inch Hard Disk Drive.........................................................................................		1-11
1.4	Optical device Drives...............................................................................................		1-12
	1.4.1 DVD-ROM & CD-RW .............................................................................		1-12
	1.4.2 DVD Super Multi Double Layer...............................................................		1-13
1.5	Power Supply...........................................................................................................		1-14
1.6	Batteries	...................................................................................................................	1-16
	1.6.1	Main Battery..............................................................................................	1-17
	1.6.2	RTC battery...............................................................................................	1-18

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1 Hardware Overview

Figures

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

1-11

Table
Table 1-1	2.5-inch HDD specifications .......................................................................		1-11
Table 1- 2	DVD-ROM & CD-RW drive specifications ...............................................		1-12
Table 1- 3	DVD Super Multi drive specifications............	Error! Bookmark not defined.
Table 1- 4	DVD Super Multi Double Layer drive specifications.................................		1-13

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1.1 Features

1 Hardware Overview

1.1Features

The Satellite A80/A85 Series Personal Computer uses extensive Large Scale Integration (LSI), and Complementary Metal-Oxide Semiconductor (CMOS) technology extensively to provide compact size, minimum weight and high reliability. This computer incorporates the following features and benefits:

CPU

•Intel Celeron M CPU 350J (1.3GHz) / 360J (1.4GHz) / 370(1.5GHz), 0.09u, 1M L2, FSB 400MHz

Chipset

•ATi RL300MB (400 MHz FSB supported)

•ATI IXP150

•ENE KB910 for Keyboard Controller, Battery management Unit, and RTC.

•TI PCI1410 for Card Bus PCMCIA controller.

•Realtek ALC250VD for AC97 Codec.

•Realtek RTL8100CL for 10/100M LAN

Memory

•Support DDR1 333MHz, No support Dual Channel.

•Two SODIMM with 256MB/512MB/1GB, one socket on upper of PCB, another socket on bottom of PCB.

•Easy upgrade from bottom side, Max. 2GB

•Integrated Gfx supported by ATI RL300MB

•Support 16/32/64/128MB UMA VGA Memory

•Default VRAM size: 64MB

BIOS

•512KB Flash ROM for system BIOS.

•Suspend to RAM/Disk.

•Password protection (System).

•Windows 98 ready with PnP

•Various hot key for system control.

•Refreshable

•Complete ACPI 1.0B Function

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1 Hardware Overview

1.1 Features

Power

•4 cells Li-Ion 18650 size smart battery Pack with 14.4 Vx2000mAh

•8 cells Li-Ion 18650 size smart battery Pack with 14.4 Vx4300mAh

HDD

•9.5mm, 2.5" HDD up to 120 GB

•Bus Master IDE

•9.5m/m, 2.5”HDD Support

•Support Ultra 100 synchronous DMA

Fixed Device Drivers

•Fixed bay

•CD-RW/DVD-ROM, DVD-RAM/-R/-RW readable

•DVD Super Multi Dual-Layer Recording:

•5/8/4/8/4/2.4x (write speed of DVD-RAM/-R/-RW/+R/+RW/+R DL)

Optional Devices

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

•Dual-Band builds in Antenna for Wireless LAN Communication.

Keyboard

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

TouchPad

This pointing control device, located in the center of the keyboard palm-rest, provides convenient control of the cursor without requiring desk space for a mouse. The TouchPad incorporates two mouse buttons.

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1.1 Features

1 Hardware Overview

Display

•15.0” TFT screen with a resolution of 1024 horizontal x 768 vertical pixels XGA

I/O Ports

•One 15 pins CRT port

•One MIC In port

•One headphone-out

•One 2pins AC Adapter Jack

•One type II PCMCIA Card Bus slots with shutter door

•Three 4 pins USB 2.0 ports

•One RJ11/RJ45 Port

•VR for volume control

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1 Hardware Overview

1.1 Features

PCMCIA Card Organization

•One type II card sockets

•1.8" 10.5mm removable ATA Device

•Card bus card or PC Care with hot insertion and removal

•ACPI 1.1 Compliant.

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

•Supports PCMCIA-ATA Specification.

Universal Serial Bus (USB)

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

External monitor port

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

Sound system

Windows® Operating System compatible sound system provides internal speakers as well as jacks for an external microphone and headphone.

TV-out port

This video-out mini-jack enables transfer of NTSC or PAL data (video and right/left audio) to external devices such as a TV.

LAN port

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

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1.2 System Unit

1 Hardware Overview

1.2System Unit

The system unit is composed of the following major components:

Processor

•Intel Celeron M CPU up to 1.5GHZ 0.09u, 1M L2, FSB 400MHz

•Micro FC-PGA package CPU

System Logic

•ATI RL300MB (400 MHz FSB supported)

•ATI IXP150

•ENE KB910 for Keyboard Controller, Battery management Unit, and RTC.

•TI PCI1410 for Card Bus PCMCIA controller.

•Integrated VGA solution for RL300MB

•Realtek ALC250VD for AC97 Codec.

•Realtek RTL8100CL for 10/100M LAN

•

Keyboard Controller

•ENE KB910 is use as Keyboard Controller and Battery management unit.

Memory

•Support DDR1 333MHz, No support Dual Channel.

•Two SODIMM with 256MB/512MB/1GB, one socket on upper of PCB, another socket on bottom of PCB.

•Easy upgrade from bottom side, Max. 2GB

•Integrated Gfx supported by ATI RL300MB

•Support 16/32/64/128MB UMA VGA Memory

•Default VRAM size: 64MB.

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1 Hardware Overview

1.2 System Unit

Audio subsystem

•Support of S’PDIF out is fully compliant with AC’97 rev2.3 specifications.

•20-bit Stereo Digital-to-Analog Converters.

•18-bit Stereo Analog-to- Digital Converters.

•Built-in 7 Bands of Digital Hardware Equalizer for Optimizing Speaker Response.

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

•Two Analog Line-level Stereo inputs with LIN_IN, CD, and AUX.

•Two Analog Line-level Mono Input: PCBEEP, PHONE-IN.

•Two software selectable MIC inputs.

•High quality differential CD Input.

•Power management and enhanced power saving features.

•Meets Microsoft WHQL/WLP 2.0 audio requirements.

•HRTF 3D positional audio.

•3D Stereo Enhancement.

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1.3 2.5-inch Hard Disk Drive

1 Hardware Overview

1.32.5-inch Hard Disk Drive

The internal HDD is a random access non-volatile storage device. It has a non-removable 2.5- inch magnetic disk and mini-Winchester type magnetic heads. The computer supports up to100GB HDD.

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

Figure 1-1 2.5-inch HDD

Items	40GB	60GB	80GB		100GB
			74.52
Formatted capacity (GB)	37.26	55.89			93.15
Logical Blocks (LBA)	78,125,000	117,187,500	156,301,488		195,371,568
Rotational speed (rpm)	4,200/5400	4,200/5400	4200/5400		4200/5400
Toshiba HDD Buffer (MB)	8/16	8/16	8/16		8/16
Hitachi HDD Buffer (MB)	2/8	8/8	8/8		NA/8
Bytes per sector	512	512	512		512

Table 1-1 2.5-inch HDD specifications

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1 Hardware Overview

1.4 Optical device Drives

1.4Optical device Drives

•DVD-ROM & CD-RW drive

•DVD Super Multi drive

1.4.1DVD-ROM & CD-RW

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

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

Item	DVD-ROM mode		CD-ROM mode
Data transfer rate (Mbytes/s)	33.3 (U-DMA transfer mode 2)
	16.6 (PIO mode 4, Multiword DMA mode 2)
Access time (ms)	180		150
Average random access
Data buffer size (Mbytes)	2MB
	DVD:
	DVD-VIDEO, DVD-ROM, DVD-R (3.9G,4.7G), DVD-RW
	(Ver.1.1), DVD-RAM, DVD+R, DVD+RW, DVD+R DL.
Formats supported	CD:
	CD-DA, CD-ROM, CD-R, CD-RW, CD-ROMXA,
	PhotoCD (muitiSession), Video CD, CD-Extra (CD+), CD-Text
Table 1- 2 DVD-ROM & CD-RW drive specifications

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1.4 Optical device Drives

1 Hardware Overview

1.4.2 DVD Super Multi Double Layer

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

The specifications of the DVD Super Multi Double Layer drive are listed in Table 1-3

Item	DVD-ROM mode		CD-ROM mode
Data transfer rate (Mbytes/s)	33.3 (U-DMA transfer mode 2)
	16.6 (PIO mode 4, Multiword DMA mode 2)
Access time (ms)	180		150
Average random access
Data buffer size (Mbytes)	2MB
	DVD:
	DVD-VIDEO, DVD-ROM, DVD-R (4.7G), DVD-RW (Ver.1.1),
	DVD-RAM, DVD+R, DVD+RW, DVD+R DL.
Formats supported	CD:
	CD-DA, CD-ROM, CD-R, CD-RW, CD-ROMXA,
	PhotoCD (muitiSession), Video CD, CD-Extra (CD+), CD-Text
Table 1- 3 DVD Super Multi Double Layer drive specifications

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1 Hardware Overview

1.5 Power Supply

1.5Power Supply

This specification defines the performance and characteristic of 65W and 75W AC adapter power supply. It supplies a constant voltage 19V output source for A80/A85 series notebook computer.

A/D conversion

•The EC uses 10-bit sampling for A/D conversion to determine the following values:

–AC adaptor current

–Battery and temperature

AC adaptor and battery check

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

–Battery installed

•The EC checks the following by GPIO values:

–AC adaptor connected

Abnormal check

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

Input port management

•The EC monitors the following input signal status:

–System power ON/OFF status

–Direct CD power ON/OFF status

Beep and LED control

•Beep is caused by the low battery status.

•The EC controls the following two kinds of LED

–DC IN LED (one color: green)

•Green = indicates AC adaptor is connected

–Battery LED (two colors: orange and green)

•Green solid = The battery is fully charged.

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

Power ON/OFF sequence

•When power is turned on or off, the EC starts the power on or off sequence.

–SQ0-4 = power ON sequence

–SQ5-B = power OFF sequence

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1.5 Power Supply

1 Hardware Overview

Battery charging control

•The EC controls the following.

–The quick charging ON/OFF

–The detection of full charge

Detection of the low battery

•The EC detects the low battery point by the gas gauge.

–LB10M = The system will be driven by the battery for 12 more minutes.

–LB0 = The battery won't be able to drive the system after 3 minutes.

–LB1 = The battery can drive the system only during the suspend process.

–LB2 = The battery cannot drive the system.

New battery installation

•When a new battery is installed, the EC communicates with the E2PROM in the battery to read information of the newly installed battery.

Battery capacity calculation

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

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1 Hardware Overview

1.6 Batteries

1.6Batteries

The computer has two types of battery:

Main battery pack (18650 size)

RTC battery

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

The battery specifications are listed in the table below.

Battery name	Material	Output voltage	Capacity
Main battery (4 cell)	Lithium-Ion	14.4 V	2000mAH
Main battery (8 cell)	Lithium-Ion	14.4 V	4300mAH
RTC battery	Lithium	3.3 V	15 mAh

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1.6 Batteries

1 Hardware Overview

1.6.1 Main Battery

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

Quick Battery Charge

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

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

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

NOTES

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

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

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

1.The battery becomes fully charged.

2.The AC adaptor or battery is removed.

3.The battery or output voltage is abnormal.

4.The battery temperature is abnormal.

5.The battery SMBus communication fails.

6.The battery cell is bad.

Detection of full charge

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

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1 Hardware Overview

1.6 Batteries

1.6.2 RTC battery

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

Status	Time
Charging Time (power on)	About 24 hours
Data preservation period (full charge)	1 month

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Chapter 3

Tests and Diagnostics

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Contents

3.1	The Diagnostic Test .........................................................................................................	3-3
3.2	Executing the Diagnostic Test..........................................................................................	3-4
3.3	Config Check Test............................................................................................................	3-8
3.4	DMI Check Test ...............................................................................................................	3-9
3.5	Speaker Audio Test ........................................................................................................	3-10
3.6	Fan ON/OFF Test...........................................................................................................	3-12
3.7	Main Battery Charge Test ..............................................................................................	3-13
3.8	FDD Test ........................................................................................................................	3-14
3.9	CD-ROM Test ................................................................................................................	3-15
3.10	Keyboard Test ................................................................................................................	3-16
3.11	Mouse (Pad) Test ...........................................................................................................	3-19
3.12	LCD Pixels Mode Test...................................................................................................	3-21
3.13	Lid Switch Test ..............................................................................................................	3-22
3.14	HDD R/W Test...............................................................................................................	3-23
3.15	LAN Test........................................................................................................................	3-25
3.16	RTC Test ........................................................................................................................	3-27
3.17	CD Control Button Test .................................................................................................	3-28

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Manual