Toshiba QOSMIO G40 Maintenance Manual
First edition July 2008
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 QOSMIO G50 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, Celeron and Centrin
Intel Corporation.
Windows, Microsoft and Windows Vista are either registered trademarks or tradem
Corporation.
Photo CD is a trademark of Eastman Kodak.
Bluetooth is a trademark owned by its proprietor and
Memory Stick and i.LINK are trademarks or registered trademarks of Sony Corporation.
DVD MovieFactory
from
Dolby
Dolby and the double-D symbol are trademarks of Dolby Laboratories.
Dolby Home Theater is a trademark of Dolby Laboratories.
EdgeMotion, PalmCheck, TouchPad and Synaptics are trademarks or registered trade
Synaptics Incorporated.
ExpressCard is a registered trademark of PCMCIA.
Other trademarks and registered trademarks not listed
is a registered trademarks of Ulead Systems, Inc.Manufactured under license
Laboratories.
o are trademarks or registered trademarks of
arks of Microsoft
used by
above may
TOSHIBA under license.
m
be used in this manual.
arks of
ii [CONFIDENTIAL] QOSMIO G50 Maintenance Manual (960-683)
Preface
This maintenance manual describes how to perform hardware service maintenance for the
Toshiba Personal Computer QOSMIO G50.
NOTE: Each model of QOSMIO G40 has a different configuration. For each model’s
configuration, refer to the parts list dedicated to it.
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.
QOSMIO G50 Maintenance Manual (960-683) [CONFIDENTIAL] iii
The manual is divided into the following parts:
Chapter 1 Hardware Overview describes the QOSMIO G50 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
iv [CONFIDENTIAL] QOSMIO G50 Maintenance Manual (960-683)
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 QOSMIO G40 that appears on its display is presented in the type face
below:
Format complete
System transferred
QOSMIO G50 Maintenance Manual (960-683) [CONFIDENTIAL] v
The QOSMIO G50 series are high performance all-in-one PCs running an Intel® Core
TM
2
Duo processor (Penryn).
There some models and options. Refer to the Parts List for the configuration of each model
and options.
The features are listed below.
Microprocessor
The QOSMIO G50 computer is equipped with an Intel® CoreTM 2 Duo Processor.
These processors incorporate a math co-processor, a 3MB or 6MB L2 cache memory.
The PC comes in with one of the following speeds:
In the case of Processor which built in 6MB L2 cache memory
•
P8600 (2.40GHz)/ P8400 (2.26GHz)
In the case of Processor which built in 3MB L2 cache memory
These processors operate at 1066MHz bus clock (FSB).
Memory
Two DDR2-667/DDR2-800 SDRAM slots. Memory modules can be installed to
provide a maximum of 4GB. Memory modules are available in 512MB, 1024MB and
2048MB sizes.
Chipset
The QOSMIO G50 is Equipped with Intel GM45/GL40(Cantiga (G) MCH) as
North Bridge, Intel ICH9M as South Bridge and R5C833 as Card Controller.
VGA Controller
The PC comes in with one of the following two types:
•
the internal graphics controller in North Bridge is used.
•
nVIDIA NB9E/NB9P/NB9M is used.
HDD
Double (or single) 160GB, 200GB, 250GB, 320GB internal serial-ATA drive. 2.5
inch x 9.5mm height.
The computer has one 400GB, 500GB internal serial-ATA drive. 2.5 inch x12.5mm
height.
Some models are equipped with a "Solid State Drive (SSD)" instead of a hard disk
drive.
•64GB,128GB
Optical devices
A slot-loading style DVD Super Multi drive (supporting double layer) is equipped.
This ODD and a serial ATA interface are supported.
Keyboard
The computer's keyboard layouts are compatible with a 104/105-key. enhanced
keyboard - by pressing some keys in combination, all of the 104/105-key enhanced
keyboard functions can be performed on the computer.
Touch pad
A Touch Pad and control buttons in the palm rest enable control of the on-screen
pointer and scrolling of windows.
Display
LCD
The PC comes in with one of the following two types:
••18.4” HD+-TFT color display, resolution 1,680 ×945
18.4” FHD TFT color display, resolution 1,920×1080
Interface
To external monitor via - RGB connector
- HDMI out port connector
HDMI out port
HDMI out port can connect with Type A connector HDMI cable.
HDMI cable can send video and audio signals. In addition to this, it can send and
receive control signals.
By connecting a TV which supports HDMI Control to this port, the remote control for
the connected TV can be used to operate some of the computer functions.
Battery
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).
The computer is equipped with PCI Express Mini Card type wireless LAN card that
supports 802.11 a/b/g or 802.11 a/b/g/n in the PCI Express Mini Card slot 1. This
function can be switched on and off by a switch on the computer.
Bluetooth
Depending on the model, the computer is equipped with a dedicated Bluetooth
module. This enables a communication to devices that support Bluetooth
This Bluetooth Stack is based on the Bluetooth Version 1.1/1.2/2.0+EDR/2.1+EDR
specification.
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.
USB FDD
USB FDD supports 720KB and 1.44MB.
ExpressCard slot
The internal ExpressCard slot is a Universal slot. This slot supports ExpressCard/54
and ExpressCard/34 modules.
Bridge Media slot
This slot lets you insert an SD™/SDHC™. memory card, mini SD™ / micro SD™
Card, Memory Stick® (Duo™/PRO™/PRO Duo™), xD- Picture Card™ and
MultiMediaCard™
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.
A power supply is always supplied to three USB ports on the left and right side of a
computer.
eSATA/USB combo
One eSATA/USB combo port, which complies to. The USB 2.0 standard is provided.
This port has eSATA (External Serial ATA) function.
A power supply is always supplied to one USB ports on the back side of a computer.
IEEE1394 port
The computer has one IEEE 1394 port. It enables high-speed data transfer directly
from external devices such as digital video cameras.
Sound system
The sound system is equipped with the following features:
•
Stereo speakers and subwoofer
•
Volume control
•
Stereo headphone jack
(one stereo headphone jack can be used also as S/PDIF connector)
•
External microphone jack
•
Built-in microphone
S/PDIF
This port can send or receive the digital sound data with the equipment like CD, MD
Player. (This port is also used for headphone I/F.)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.
Web Camera
Web Camera Web Camera is a device that allows you to record video or take
photographs with your computer.
Enables the transmission of video and use of video chat via the internet using
specialized applications.
The effective pixel count for this web camera is 1.31 million (maximum photograph
size: 1280x1024 pixels).
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.
This computer (Some models) is Intel Turbo Memory loading.
Broadcom: PCI Express Mini Card slot 3.
It equips with UWB, GPS, DVBT, TV turner, and etc by the destination.
SpursEngine: PCI Express Mini Card slot 4.
This computer (Some models) is Equipped with Media streaming processor
SpursEngine loading.
It is used by TOSHIBA Face Recognition etc.
FM-tuner
This computer (Some models) is FM-tuner loading.
Front operation panel (nine panels) /Touch Sensor
Nine panels are available for use: CD/DVD, Play/Pause, Stop, Previous, Next, Mute,
Illumination On/Off, Camera, and DOLBY.
These panels allow you to manage Audio/Video, run applications and access utilities.
Remote controller
A remote controller for easy operation from some distance.
Windows Vista Premium Logo is supported.
Infrared receiver window
This is a sensor window that receives signals from the remote controller which is
provided with your computer.
Models which do not include a remote controller are not equipped with an infrared
received so the computer cannot be operated with a remote controller.
Connect the Infrared transmitter cable to this port.
Connecting the set top box or other external device to the computer using the infrared
transmitter cable allows the external device to be operated using the computer and
specialized remote control.
CoreTM 2 Duo Processor.
These processors incorporate a math co-processor, a 3MB or 6MB L2 cache memory.
The PC comes in with one of the following speeds:
In the case of Processor which built in 6MB L2 cache memory
P8600 (2.40GHz)/ P8400 (2.26GHz)
In the case of Processor which built in 3MB L2 cache memory
These processors operate at 1066MHz bus clock (FSB).
Memory
Two DDR2-667/DDR2-800 SDRAM slots. Memory modules can be installed to
provide a maximum of 4GB. Memory modules are available in 512MB, 1024MB and
2048MB sizes.
- 200-pin small-size DIMM
- 1.8V operation
- DDR2-667/800 support
BIOS ROM (Flash memory)
- 8Mbit (512K×16-bit chip)
301KB used for Animation
288KB used for system BIOS
64KB used for VGA-BIOS
64KB used for Finger Print
32KB used for ACPI
24KB used for booting
16KB used for Parameter Block
Others
This gate array has the following elements and functions.
• North Bridge (Intel GM45/GL40-Cantiga (G) MCH)
Meorom Processor System Bus Supports
PCI Express Based Graphics Interface
System Memory supports :DDR2-667/DDR2-800, 4GB max.
DMI(Direct Media Interface: x4/x2, ASPM L0s, L1 states support)
Power management control (DPST 4.0)
• South Bridge (Intel ICH9M)
-PCI Local Bus Specification, Revision 2.3-compliant with support for
33MHz PCI operations
-PCI slots (supports up to 4 Req/Gnt pairs)
-PCI Express (6 PCI Express root ports)
-ACPI 3.0b compliant
-Enhanced DMA Controller, Interrupt Controller, and Timer Functions
-Integrated Serial ATA Host Controller (4 ports)
-USB host interface with support for 12 USB ports; 6 UHCI host
controllers; 2 EHCI high-speed USB 2.0 Host Controller
-System Management Bus (SMBus) Specification, Version 2.0 with
additional support for I2C devices
-Intel High Definition Audio Interface
-Supports Audio Codec ’97, Revision 2.3 specification or HD Audio