Toshiba TECRA A6 User manual

[CONFIDENTIAL]
Toshiba Personal Computer
Tecra A6
Maintenance Manual
TOSHIBA CORPORATION

ii [CONFIDENTIAL] Tecra A6 Maintenance Manual
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 A6 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 A6 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.

Tecra A6 Maintenance Manual [CONFIDENTIAL] iii
Preface
This maintenance manual describes how to perform hardware service maintenance for the Toshiba
Personal Computer Tecra A6, referred to as the A6 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.

iv [CONFIDENTIAL] Tecra A6 Maintenance Manual
The manual is divided into the following parts:
Chapter 1 Hardware Overview describes the A6 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

Tecra A6 Maintenance Manual [CONFIDENTIAL] v
Conventions
This manual uses the following formats to describe, identify, and highlight terms and operating
procedures.
Acronyms
On the first appearance and whenever necessary for clarification, acronyms are enclosed in parentheses
following their definition. For example:
Read Only Memory (ROM)
Keys
Keys are used in the text to describe many operations. The key top symbol as it appears on the
keyboard is printed in boldface type.
Key operation
Some operations require you to simultaneously use two or more keys. We identify such operations by
the key top symbols separated by a plus (+) sign. For example, Ctrl + Pause (Break) means you
must hold down Ctrl and at the same time press Pause (Break). If three keys are used, hold down
the first two and at the same time press the third.
User input
Text that you are instructed to type in is shown in the boldface type below:
DISKCOPY A: B:
The display
Text generated by the computer that appears on its display is presented in the typeface below:
Format complete
System transferred

vi [CONFIDENTIAL] Tecra A6 Maintenance Manual

Tecra A6 Maintenance Manual [CONFIDENTIAL] vii
Table of Contents
Chapter 1 Hardware Overview
1.1 Features.............................................................................................................................1-1
1.2 System Unit .......................................................................................................................1-6
1.3 2.5-inch Hard Disk Drive ...................................................................................................1-8
1.4 Optical device Drives.........................................................................................................1-9
1.5 Power Supply..................................................................................................................1-12
1.6 Batteries ..........................................................................................................................1-14
Chapter 2 Troubleshooting Procedures
2.1 Troubleshooting Introduction..............................................................................................2-1
2.2 Troubleshooting Flowchart.................................................................................................2-2
2.3 Power Supply Troubleshooting...........................................................................................2-7
2.4 Display Troubleshooting...................................................................................................2-12
2.5 Keyboard Troubleshooting...............................................................................................2-15
2.6 External USB Devices Troubleshooting.............................................................................2-17
2.7 TV-Out Failure Troubleshooting.......................................................................................2-19
2.8 Printer Port Troubleshooting.............................................................................................2-21
2.9 TouchPad Troubleshooting...............................................................................................2-23
2.10 Speaker Troubleshooting..................................................................................................2-27
2.11 Optical Drive Troubleshooting..........................................................................................2-29
2.11 Modem Troubleshooting ..................................................................................................2-32
2.12 PCMCIA Troubleshooting...............................................................................................2-34
2.13 IEEE 1394 Troubleshooting .............................................................................................2-36
2.14 Wireless LAN Troubleshooting ........................................................................................2-38

viii [CONFIDENTIAL] Tecra A6 Maintenance Manual
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 Speaker Audio Test............................................................................................................3-9
3.7 Fan ON/OFF Test ...........................................................................................................3-10
3.8 Main Battery Charge Test.................................................................................................3-11
3.9 FDD Test.........................................................................................................................3-12
3.10 CD-ROM Test.................................................................................................................3-13
3.11 Keyboard Test.................................................................................................................3-14
3.12 Mouse (Pad) Test.............................................................................................................3-16
3.13 LCD Pixels Mode Test.....................................................................................................3-18
3.14 Lid Switch Test ................................................................................................................3-19
3.15 HDD R/W Test................................................................................................................3-20
3.16 LAN Test.........................................................................................................................3-22
3.17 RTC Test.........................................................................................................................3-24

Tecra A6 Maintenance Manual [CONFIDENTIAL] ix
Chapter 4 Replacement Procedures
4.1 General..............................................................................................................................4-4
4.2 Battery...............................................................................................................................4-9
4.3 PC Card..........................................................................................................................4-11
4.4 HDD ...............................................................................................................................4-13
4.5 Expansion Memory..........................................................................................................4-15
4.6 Optical Drive Module.......................................................................................................4-18
4.7 Optical Drive ...................................................................................................................4-20
4.8 Keyboard........................................................................................................................4-22
4.9 Bluetooth module .............................................................................................................4-25
4.10 Wireless LAN Unit ..........................................................................................................4-27
4.11 Modem............................................................................................................................4-30
4.12 Display Assembly.............................................................................................................4-33
4.13 Top Cover.......................................................................................................................4-35
4.14 Touch Pad.......................................................................................................................4-37
4.15 Direct Play Button Module ...............................................................................................4-39
4.16 Memory...........................................................................................................................4-41
4.17 System Board..................................................................................................................4-42
4.18 Fan & CPU.....................................................................................................................4-45
4.19 USB Module ...................................................................................................................4-48
4.20 VGA Module...................................................................................................................4-49
4.21 Display Mask...................................................................................................................4-50
4.22 Speakers .........................................................................................................................4-52
4.23 FL Inverter Board............................................................................................................4-53
4.24 LCD Module ...................................................................................................................4-54

x[CONFIDENTIAL] Tecra A6 Maintenance Manual
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

Chapter 1
Hardware Overview
1
[CONFIDENTIAL]

1 Hardware Overview
1-ii [CONFIDENTIAL] Tecra A6 Maintenance Manual

1 Hardware Overview
Chapter 1 Contents
1.1 Features......................................................................................................................1-1
1.2 System Unit................................................................................................................1-7
1.3 2.5-inch Hard Disk Drive...........................................................................................1-9
1.4 Optical device Drives...............................................................................................1-10
1.4.1 DVD-ROM & CD-RW .............................................................................1-10
1.4.2 DVD-ROM................................................................................................1-11
1.4.3 DVD Super Multi Double Layer............................................................... 1-12
1.5 Power Supply...........................................................................................................1-13
1.6 Batteries ...................................................................................................................1-15
1.6.1 Main Battery..............................................................................................1-16
1.6.2 RTC battery...............................................................................................1-17
Tecra A6 Series Maintenance Manual [CONFIDENTIAL] 1-iii

1 Hardware Overview
Figures
Figure 1-1 2.5-inch HDD............................................................... 錯誤! 尚未定義書籤。
Tables
Table 1-1 2.5-inch HDD specifications......................................................................... 1-9
Table 1-2 DVD-ROM & CD-RW drive specifications............................................... 1-10
Table 1-3 DVD-ROM drive specifications.................................................................. 1-11
Table 1-4 DVD Super Multi Double Layer drive specifications................................. 1-12
1-iv [CONFIDENTIAL] Tecra A6 Maintenance Manual

1.1 Features 1 Hardware Overview
1.1 Features
The Tecra A6 Series Personal Computer uses extensive Large Scale Integration (LSI), and
Complementary Metal-Oxide Semiconductor (CMOS) technology extensively to provide
compact size, minimum weight and high reliability. This computer incorporates the following
features and benefits:
 CPU
• Intel Pentium M Yonah mobile dual core processor FSB 667MHz, C4E support
(1.66GHz/1.83GHz/2GHz/2.16GHz/2.33GHz and higher with 31W TDP)
• Intel Pentium M Yonah mobile single core processor, FSB 667NHz, C4E support
(1.66GHz/1.83GHz and higher with 31W TDP)
 Chipset
• Intel 945PM with ICH7M (Pentium® M + Extended Graphics model) or Intel
945GM with ICH7M (Pentium® M + Extended Graphics model + Integrated
Graphics model)
• Extended Graphics:
 ATI Radeon X1300 64MB/128MB
 ATI Radeon X1400 64MB/128MB/256MB
 Nvidia Quadro 64M/128M
• NVIDIA GeForce Go 7300 (64MB or 128MB)
• Realtek 861 Audio
• TI 7412 for PCMCIA, 6-in 1 Multimedia Card Reader, and IEEE 1394 controller
Intel Enkron-R 10/100 or Intel Vidalia Gigabit for LAN
 Display
• 14” (16:10) TFT screen with a resolution of 1280 horizontal x 800 vertical pixels,
non-CSV normal brightness, WXGA
• 14.1” (16:10) TFT screen with a resolution of 1280 horizontal x 800 vertical pixels,
CSV normal brightness, WXGA
• 14.1” (16:10) TFT screen with a resolution of 1440 horizontal x 900 vertical pixels,
CSV high brightness, WXGA
 Memory
• No on-board memory
• DDR-II 533/667MHz at FCS supported
• Dual channel support
• Two SODIMM with 256MB/512MB/1GB modules
• Easy upgrade from bottom of the chassis
• Maximum 2GB
Tecra A6 Series Maintenance Manual [CONFIDENTIAL] 1-1

1 Hardware Overview 1.1 Features
 Video RAM
• Up to 128MB integrated solution and shared with main memory for Mobile Intel
945GM Express Chipset
• 128MB, 256MB or 512MB HyperMemoryTM (64MB or 128MB for local cache) for
ATI MobilityTM Radeon® X1300 with HyperMemoryTM
• 128MB, 256MB or 512MB HyperMemoryTM (64MB, 128MB or 256MB for local
cache) for ATI MobilityTM Radeon® X1400 with HyperMemoryTM
• ATI does not share with main memory
 BIOS
• Phoenix First BIOS
• 1MB Flash ROM for system BIOS
• Suspend to RAM/Disk
• Password protection (Power on, supervisor, HDD)
• Windows 98 ready with PnP
• Various hot keys for system control
• Refreshable
• Complete ACPI 1.0B function
• APM, S4BIOS not supported
• USB memory boot support
• SD memory boot support
 Power
• Universal AC adapter, 90~264VAC, 47~63Hz.
 75W with 15V DC (UMA, UMA with docking and Discrete VGA without
docking)
 90W with 15V DC (Discrete VGA with docking)
• 6 cells of Li-Ion 18650 size, smart battery pack with 4000mAH x 10.8V (43.2W)
• 9 cells of Li-Ion 18650 size, smart battery pack with 6000mAH x 10.8V (64.8W)
• 12 cells of Li-Ion 18650 size smart battery pack with 8600mAH x 10.8V (92.88W)
• Approximately 12 hours or longer charging time to 100% battery capacity with
system switched on.
• Approximately 4 hours charge time to 100% battery capacity with system switched
off.
• Approximately 2 days discharging time in Standby Mode for the 12-cell battery,
1.5 day for the 9-cell battery and 1 days for 6-cell battery.
• Discharge time in shutdown mode is approximately 1 month
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1.1 Features 1 Hardware Overview
 HDD
• 9.5mm, 2.5" S-ATA HDD up to 120 GB, 5400rpm
• With 3D shock protection sensor and Dome protection
• Bus master IDE
• SATA1.5G support
 Fixed Device Drivers
• 5.25” 12.7mm height, DVD-ROM & CD-RW combo device
• 5.25” 12.7mm height, DVD-ROM device
• 5.25” 12.7mm height, DVD Super-multi device (DVD-RAM/-R/-RW/+R/+RW)
 Optional Devices
• 256MB/512MB/1024MB SO-DIMM DDR modules
• Intel 945GM for internal graphics, Intel 945 PM for external graphics, daughter
board with ATI M52P/54P or Nvidia G72M
 ATi M52P with 64MB/128MB
 ATi M54P with 64MB/128MB/256MB
 Nvidia G72MV with 64MB/128MB
• Realtek 861 audio controller
• PCIe mini card wireless module (802.11a+b+g Askey WLAN module,
802.11a+b+g Intel WLAN module)
• Dual-band built-in antenna for wireless LAN communication
• MDC Modem
• External PCMCIA form factor remote control devices
• Internal USB interface Bluetooth module V2.0 with EDR
 Keyboard
The computer's keyboard has 85/86 keys and the layouts are compatible with a 101/102-
key enhanced keyboard. There are five types of keys: typewriter keys, keypad overlay,
function keys, soft keys and cursor control keys. The typewriter keys and keypad overlay
keys are gray. The other keys are dark gray. The keys have special functions, which is
like G-sensor, TPM, Finger printer and so on.
 Touch Pad
This pointing control device, located in the center of the keyboard palm-rest, provides
convenient control of the cursor without requiring desk space for a mouse. The Touch
Pad incorporates two mouse (left and right) buttons for universal usage.
Tecra A6 Series Maintenance Manual [CONFIDENTIAL] 1-3

1 Hardware Overview 1.1 Features
 I/O Ports
• Four USB (V2.0) ports
• One DDC2b compliant 15-pin VGA port (RGB)
• One S-Video port
• One microphone port
• One headphone-out jack
• VR volume control
• Wireless communication switch
• FIR
• CIR for 10/10G
• 240-pin connector for advance port replicator III
• One DC-in jack
• One RJ-11 jack for 56kbps V.92 modem
• One RJ-45 jack with LED indicator
• Kensington lock
• One IEEE 1394 port
• Fingerprint authentication
• One 6-in-1 push-push type flash card connector and card reader
• Internal Mic-array
• One type II PCMCIA slot with shutter door
 PCMCIA Card Organization
• One type II card socket with shutter door
• TI 7412 controller
• PC card 95 supported
• No ZV-port support
• SRAM, OTPROM, FLASH ROM, mask ROM memory card up to 64MB
• Modem/LAN card
• CardBus card
• ACPI 1.0B compliant
 Multiple Digital Media Card Slot
• TI 7412 controller
• Supports SD/MMC/MS/MS Pro/xD/mini SD with adapter
• SD-IO supported
• High-speed SD support
• Dummy rubber cover for slot
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1.1 Features 1 Hardware Overview
 IEEE1394 port
• TI 7412 controller
• Enables high-speed data transfer directly from external device such as digital video
cameras.
 Modem
• Internal modem with MDC solution
• Support for the V.90 or V.92 standards depending on the region and provides a
modem jack for connection to a telephone line.
• Speed of data and fax transfer depends on the analog telephone line conditions.
 Universal Serial Bus (USB)
The computer has four Universal Serial Bus (USB) ports that comply with the USB 2.0
standard, which enable data transfer speeds more than 40 times faster than USB 1.1
(which this computer also supports.) The USB drives may be used to transfer data at low,
full, and high speeds.
 External monitor port
A 15-pin CRT port supporting DDC 2B enables connection of an external monitor, which
is recognized automatically by Video Electronics Standards Association (VESA) Display
Data Channel (DDC) compatible functions.
 Sound system
• Realtek 861 module.
• Windows®compatible sound system provides two internal stereo speakers as well
as jacks for an external microphone and headphones.
 LAN port
• 10/100M (Intel Enkron-R) or gigabit LAN (Intel Vidalia)
• The computer comes with an RJ-45 Local Area Network (LAN) port. The computer
has built-in support for Ethernet LAN (10 megabits per second, 10BASE-T), Fast
Ethernet LAN (100 Mbps 100BASE-TX), or Gigabit Ethernet LAN (1000 Mbps,
1000BASE-T).
 Switches
• Power button
• Wireless communication switch
• Toshiba presentation button
• Toshiba Assist button
Tecra A6 Series Maintenance Manual [CONFIDENTIAL] 1-5

1 Hardware Overview 1.1 Features
 Bluetooth module
Some computers in this series are equipped with Bluetooth functionality (Version 2.0 +
EDR) with antenna. Bluetooth is a short-range wireless technology used to create PANs
(Personal Area Networks) among your devices, as well as with other nearby devices such
as cell phones and digital cameras.
 Excellent power management function
• Standby mode, Suspend to RAM or Suspend to disk mode, using time out or hot
key
• HDD local standby mode by time out
• LCD local standby mode by time out
• Low battery alarm by beep
• Auto-backlight off when LCD cover closed
• Full ACPI 1.0B supported
• LCD auto-dim mode by time out
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