Toshiba satellite p20, satellite p25 Service Manual

5 (1)

Toshiba Personal Computer

Satellite P20-25 Series

Maintenance Manual

TOSHIBA CORPORATION

Copyright

© 2003 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 P20-25 Series Maintenance Manual

First edition June 2003

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 P20 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 P20-25 Series Maintenance Manual

Toshiba satellite p20, satellite p25 Service Manual

Preface

This maintenance manual describes how to perform hardware service maintenance for the Toshiba Personal Computer Satellite P20 Series, referred to as the P20-25 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.

Satellite P20-25 Series Maintenance Manual

iii

The manual is divided into the following parts:

Chapter 1 Hardware Overview describes the P20-25 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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Satellite P20-25 Series Maintenance Manual

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

Satellite P20-25 Series Maintenance Manual

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Satellite P20-25 Series 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 ...........................................................................................................

1-11

1.6

Batteries ...................................................................................................................

1-13

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

FDD Troubleshooting ..............................................................................................

2-15

2.6

Keyboard Troubleshooting ......................................................................................

2-17

2.7

External USB Devices Troubleshooting..................................................................

2-20

2.8

TV-Out Failure Troubleshooting .............................................................................

2-22

2.9

Printer Port Troubleshooting ...................................................................................

2-24

2.10

TouchPad Troubleshooting......................................................................................

2-26

2.11

Speaker Troubleshooting .........................................................................................

2-28

2.12

Optical Drive Troubleshooting ................................................................................

2-30

2.13

Modem Troubleshooting..........................................................................................

2-33

2.14

PCMCIA Troubleshooting.......................................................................................

2-35

2.15

IEEE 1394 Troubleshooting ....................................................................................

2-37

2.16

Wireless LAN Troubleshooting...............................................................................

2-39

2.17

Bluetooth Troubleshooting ......................................................................................

2-41

Satellite P20-25 Series Maintenance Manual

vii

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 .....................................................................................................

3-18

3.14

LCD Pixels Mode Test.............................................................................................

3-20

3.15

Lid Switch Test ........................................................................................................

3-21

3.16

HDD R/W Test ........................................................................................................

3-22

3.17

LAN Test .................................................................................................................

3-24

3.18

RTC Test..................................................................................................................

3-26

3.19

CD Control Button Test ...........................................................................................

3-27

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Satellite P20-25 Series Maintenance Manual

Chapter 4 Replacement Procedures

 

4.1

General..........................................................................................................................

1

4.2

Battery...........................................................................................................................

7

4.3

PC Card.........................................................................................................................

9

4.4

Removable modules....................................................................................................

12

4.5

Optical Drive...............................................................................................................

15

4.6

TV Tuner.....................................................................................................................

17

4.7

Removable HDD.........................................................................................................

19

4.8

Removable FDD .........................................................................................................

23

4.9

Wireless LAN Unit .....................................................................................................

25

4.10

Expansion Memory.....................................................................................................

28

4.11

Modem / Bluetooth Unit .............................................................................................

31

4.12

CPU.............................................................................................................................

34

4.13

HDD............................................................................................................................

38

4.14

Keyboard.....................................................................................................................

42

4.15

Top Cover ...................................................................................................................

45

4.16

Function Key Board....................................................................................................

48

4.17

LED / Power Button Board.........................................................................................

50

4.18

TouchPad ....................................................................................................................

52

4.19

Display Assembly .......................................................................................................

54

4.20

System Board ..............................................................................................................

58

4.21

Direct Play Button Board............................................................................................

62

4.22

CIR Board ...................................................................................................................

64

4.23

Direct play LED board................................................................................................

66

4.24

Audio Board................................................................................................................

68

4.25

Speakers ......................................................................................................................

70

4.26

Fan Set ........................................................................................................................

72

4.27

Display Mask ..............................................................................................................

75

4.28

FL Inverter Board .......................................................................................................

77

4.29

LCD Module ...............................................................................................................

80

Satellite P20-25 Series Maintenance Manual

ix

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 P20-25 Series Maintenance Manual

Chapter 1

Hardware Overview

1 Hardware Overview

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Satellite P20-25 Series Maintenance Manual

1 Hardware Overview

Chapter 1

Contents

1.1

Features.........................................................................................................................

 

1

1.2

System Unit...................................................................................................................

5

1.3

2.5-inch Hard Disk Drive..............................................................................................

8

1.4

Removable Drives.........................................................................................................

9

 

1.4.1

3.5-inch Floppy Disk Drive.............................................................................

9

 

1.4.2

DVD-R/-RW Drive .......................................................................................

10

 

1.4.3

DVD-ROM Drive..........................................................................................

11

 

1.4.4

DVD Multi-Drive..........................................................................................

12

 

1.4.5

Combo Drive.................................................................................................

13

1.5

Power Supply..............................................................................................................

14

1.6

Batteries

......................................................................................................................

16

 

1.6.1

Main Battery..................................................................................................

16

 

1.6.2

RTC battery...................................................................................................

18

Satellite P20-25 Series Maintenance Manual

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1 Hardware Overview

1-iv

Satellite P20-25 Series Maintenance Manual

1.1 Features

1 Hardware Overview

1.1Features

The Satellite P20-25 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 Desktop P4 up to 2.4GHZ or Northwood upgradable

Chipset

Intel DT Springdale (865 PE)

Intel 82801 EB I/O Controller HUB5(ICH5)

PC87591L for Keyboard Controller, Battery Management Unit and RTC

T7L58XB for CardBus and SD Controller

nVIDIA NV34M Graphics Controller

Cirrus logic ALC202 for AC97 CODEC

OZ168 for Direct CD Play Controller

8101L for LAN Controller

Memory

On board with two 200-pin +2.5V SO-DIMM connectors, supporting DDR RAM cards. Maximum upgradable to 1GB by two 512MB SO-DIMM modules

256 KB/512KB L2 Cache on CPU

External 64MB VGA DDR RAM

BIOS

512KB Flash ROM for system BIOS.

Suspend to RAM/Disk.

Password protection (System).

Windows XP ready with PnP

Various hot key for system control.

Refreshable

Complete ACPI 1.0B Function

Power

12 cells Li-Ion 18650 size smart battery Pack with 95Wh capacity

2.0 hours operation as running battery mark 2001 version 1.0/+ program

12 hours charging time to 100% capacity on Li-Ion Battery (System on)

Brightness Minimum plus 3 steps

RTC battery (Sanyo ML1220T128 3.3V/15mAH Lithium) backs up the Real Time Clock and CMOS memory

Satellite P20-25 Series Maintenance Manual

1-1

1 Hardware Overview

1.1 Features

HDD

One 2.5", 9.5mm hard disk with capacity 30GB/40GB/60GB/80GB

Bus Master IDE

9.5mm, 2.5”HDD support

Support Ultra 100 synchronous DMA

FDD / DVD Devices

One of the following:

12.7mm, 1.44MB FDD device

5.25” 12.7mm height DVD-R/RW device

5.25” 12.7mm height DVD-ROM device

5.25” 12.7mm height DVD multi-drivedevice

5.25” 12.7mm height combo device

Keyboard

An easy-to-use 87-key keyboard provides a numeric keypad overlay for fast numeric data entry or for cursor and page control. It supports software that uses a 101or 102key enhanced keyboard. Includes one Windows® key and one Application key.

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.

Display

The following types of display are available:

17.0-inch WXGA TFT screen, 1440×900 pixels, Response time 31ms (typ.); Contrast ratio 350:1 (typ.); Brightness 150 Nit (typ.)

17.1-inch WXGA TFT screen, 1440×900 pixels, Response time 31ms (typ.); Contrast ratio 300:1 (typ.); Brightness 160 Nit (typ.)

Optional devices

64MB/128MB/256MB/512MB SO-DIMM modules

MINI PCI module(802.11b wireless LAN module)

Modem with MDC solution module

1-2

Satellite P20-25 Series Maintenance Manual

1.1 Features

1 Hardware Overview

I/O Ports

One 25-pin parallel port, EPP/ECP capability

One 15-pin CRT port, supports DDC 2B

One TV-out connector

One MIC-in port

One line-in port

One headphone-out

One 2-pin AC adapter jack

One type III or two type II PCMCIA card bus slots

Four 4-pin USB ports

One RJ11/RJ45 port

VR for volume control

IEEE1396 (i.Link / FireWire) port

CIR port

Universal Serial Bus (USB)

The computer comes with four USB ports that comply with Universal Host Controller Interface (UHCI). The USB enables daisy-chain connection of up to 127 USBequipped devices. It is designed for easy configuration by a Plug-and-Play operating system and provides hot insertion/ejection capability.

Parallel port

A 25-pin parallel port enables connection of a printer or other parallel device. The port supports Extended Capabilities Port (ECP) conforming to IEEE-1284 and is Enhanced Parallel Port (IEEE 1284) compliant. It features ChiProtect circuitry for protection against damage due to printer power-on.

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.

PC Card Slot

The PC Card Slot accommodates two 5mm cards (Type II) or one 10.5mm (Type III) card and supports SRAM, OTPROM, FLASH ROM, and mask ROM memory cards up to 64MB as well as MODEM/LAN cards, ATA cards and Card bus cards. ACPI 1.0b compliant.

Satellite P20-25 Series Maintenance Manual

1-3

1 Hardware Overview

1.1 Features

Sound system

A Cirrus logic ALC202 for AC97 codec audio subsystem offers industry leading mixed signal technology to enhance the computer’s multimedia capability. The sound system is equipped with stereo speakers and jacks for headphone and external microphone.

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.

CD/Digital Mode Button and audio/video control buttons

Unlock the control buttons by pressing the CD/Digital Mode Button for three seconds. When unlocked, the CD or Digital LED will light on the front panel. When unlocked, press the CD/Digital Mode Button briefly to switch between CD mode and digital mode. CDs can be played with the computer turned off. Pressing play in digital mode will start the computer and launch the digital music player application.

1-4

Satellite P20-25 Series Maintenance Manual

1.2 System Unit

1 Hardware Overview

1.2System Unit

The system unit is composed of the following major components:

Processor

Intel Desktop P4 up to 2.4GHZ or Northwood upgradable

mPGA478 package CPU

FSB533 Northwood CPU 2.53G/2.66G/2.8G w/o HT

FSB533 Northwood CPU 3.06G w/HT

FSB800 Northwood CPU 2.4G/2.6G/2.8G/3.0G/3.2G w/HT

System Logic

Intel chipset MCH Springdale PE

Integrated DRAM controller

Accelerated Graphics Port (AGP) Interface

Hub Interface to Intel ICH5

Power Management Functions

Fixed Disk Interface

Intel 82801 EB I/O Controller HUB5 (ICH5)

KBC/EC (Keyboard Controller/Embedded Controller)

One PC87591 chip functions as both KBC and EC.

KBC has the following functions:

Scan controller to check status of keyboard matrix

Interface controller between the keyboard scan controller and the system

Control of switching and simultaneous operation of the accupoint/external PS/2 mouse and of the internal keyboard/external PS/2 keyboard

EC has the following functions:

Power supply sequence control

Thermal conditions control

LEDs control

Beep control

Devices ON/OFF control

FAN revolutions rate control

General Input/Output port control

Docker power supply control

Battery capacity check

Flash rewriting

Detection of abnormal condition

EC I/F

I2C Communication

EC access

Satellite P20-25 Series Maintenance Manual

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1 Hardware Overview

1.2 System Unit

Memory

System DRAM

Two JEDEC standard 200-pins SO-DIMM memory support +2.5V 64/128/256MB/512MB.

System & KB Combine ROM BIOS

512KB Flash ROM

Video Subsystem

nVIDIA NV34M Graphics Controller)

Microsoft-DX9 & OpenGL-2.0 (with NVIDIA extensions) Graphics APIs hardware support

50 million triangles per second setup engine

1000 million pixels per second fill rate

256-bit 3D and 2D graphics accelerator, with full 32/64/128-bit color with 32bit z/stencil (24+8 bit) support

Complete pipeline support for 128-bit color for ultimate rendering quality

NVIDIA Accuview+ anti-aliasing technology for full Quincunx AA capability –even for high-resolution UXGA panels

Raw Peak memory bandwidth of 8.0 GB/second

Supports 128-bit DDR SDRAM, driven by a twin memory channel architecture, for maximizing memory bandwidth utilization to enhance rendering performance while minimizing power-consumption as well.

DirectX and S3TC texture compression support

AGP8x (with Fast Writes & Side-band-Signaling support) - for enhanced host interface bandwidth up-to 2.1Gbytes/second; with AGP4x, 2x support as well

Enhanced nView+ multi-display technology supporting any combination of notebook LCD, desktop VGA monitor, DVI display or TV set; with new user & applications control & interface support capabilities

Dual CRTC/Simultaneous Dual Display (same or different surfaces)

Integrated dual LVDS Transmitter supporting LCD panels up to 2048x1536 @60Hz

Integrated 400 MHz Palette-DAC for analog VGA monitors up to 2048x1536 @85Hz refresh

Integrated NTSC/PAL TV encoder supporting resolutions up to 1024x768 without the need for panning, with built-in Macrovision(7.1.L1) copyprotection

Integrated TMDS transmitter for Digital Visual Interface support with scaling and filtering for flat panels up to 1600x1200 @60Hz

DVDand HDTV-ready MPEG-2 decoding up to 1920x1080i resolutions

Most comprehensive MPEG-2 hardware decode functionality, including Inverse Quantization,

Inverse Discrete Cosine Transform, Motion Compensation and Color-Space- Conversion

VIP1.1 interface support for Analog Video In/Out functionality

1-6

Satellite P20-25 Series Maintenance Manual

1.2 System Unit

1 Hardware Overview

Dual 12-bit or Single 24-bit configurable DVO ports for up-to 333Mpixels/sec transfer rates

Improved visual quality for all display planes (desktop or overlay) over all display devices (LCD, CRT, TV) – enabled by improved filtering, adaptive deinterlacing & per-pixel gamma-correction hardware circuitry

Full support for all Windows (ME, 2K, XP), MAC OSX & Linux operating systems

PowerMizer3.0 technology for further maximizing battery life, while minimizing performance compromises - through dynamic intelligent powering down of currently unused functional blocks

Advanced TSMC 0.15 micron with 8-layer metals process, for maximizing performance while minimizing power – a critical mobile combination

31x31mm, 701 EPBGA package

Audio subsystem

Cirrus logic ALC202 for AC97 codec

Ac 97 2.1 Compatible

20-bit Stereo Digital-to-Analog Converters.

18-bit Stereo Analog-to- Digital Converters.

Sample Rate Converters

Four Analog Line-level Stereo Inputs for LIN_IN,CD,VIDEO, and AUX

Two Analog Line-level Mono Inputs for Modem and Internal PC Beep

Dual Stereo Line-level Outputs for LINE_OUT and ALT_LINE _OUT

Dual Microphone Inputs

High Quality Pseudo-Differential CD Input

Extensive Power Management Support

Meets or Exceeds the Microsoft® PC 99 Audio Performance Requirements

S/PDIF Digital Audio Output

CrystalClear ® 3D Stereo Enhancement

Super I/O

One LPC47N227 chip is used.

This gate array has the following features:

Floppy Disk Controller

Parallel Port Controller

Satellite P20-25 Series Maintenance Manual

1-7

1 Hardware Overview

1.4 Removable Drives

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 a 30 / 40 / 60 / 80GB HDD.

1-8

Satellite P20-25 Series Maintenance Manual

1.4 Removable Drives

1 Hardware Overview

1.4Removable Drives

The module compartments can accommodate the following removable modules:

Battery pack

Secondary hard disk drive

TV tuner

Floppy disk drive

DVD-R/-RW drive

DVD-ROM drive

DVD multi-drive drive

Combo drive

1.4.13.5-inch Floppy Disk Drive

The 3.5-inch FDD is a thin, high-performance reliable drive that supports 720KB (formatted) 2DD and 1.44MB (formatted) 2HD disks. The specifications for the FDD are listed in the table below.

Item

2MB mode

1MB mode

 

 

 

Storage capacity (KB)

 

 

Unformatted

2,000

1,000

Formatted

1,440

720

Number of heads

2

2

 

 

 

Number of cylinders

80

80

 

 

 

Recording method

Modified Frequency Modulation (MFM)

 

 

 

 

 

 

Satellite P20-25 Series Maintenance Manual

1-9

1 Hardware Overview

1.4 Removable Drives

1.4.2 DVD-R/-RW Drive

The DVD-R/-RW drive (Toshiba SD-R6112) accommodates either 12cm (4.72-inch) or 8cm (3.15-inch) CDs or DVDs.

Read speeds

DVD-ROM

Maximum 8 times faster rotational speed

DVD-RAM

Standard rotational speed

CD-ROM

Maximum 24 times faster rotational speed

Write speeds

 

 

 

CD-R

4,16 times faster rotational speed

CD-RW

4 times faster rotational speed

High-Speed CD-RW

4,10 times faster rotational speed

DVD-R

1, 2 times rotational speed

DVD-RW disc

1 times rotational speed

 

Access Speed

 

 

 

Average Random Access Time

DVD-ROM:

115 ms (3.3-8X)

 

 

CD-ROM:

105 ms (10.3-24X)

 

 

DVD-RAM:

170 ms (4.7GB 1X)

Average Random Seek Time

 

DVD-ROM:

105 ms (3.3-8X)

 

 

CD-ROM:

100 ms (10.3-24X)

 

 

DVD-RAM:

120 ms (4.7GB 1X)

Average Full Stroke Access Time

DVD-ROM:

195 ms (3.3-8X)

 

 

CD-ROM:

180 ms (10.3-24X)

 

 

DVD-RAM:

350 ms (4.7GB 1X)

Buffer capacity

Supported formats

Applicable

CD

Write Formats:

DVD

Applicable

CD

Write Disc:

 

 

DVD

Applicable

CD

Read Disc:

 

 

DVD

2 Mbytes (Max)

CD-R/RW

DVD-R

DVD-RW

CD-R/RW [CD-DA, CD+(E)G, CD-MIDI, CD-ROM, CD-ROM XA, MIXED MODE CD, CD-I, CD-I Bridge (Photo-CD, Video-CD), Multisession CD (Photo-CD, CD-EXTRA, Portfolio)]

DVD-RW

DVD-R

CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, CD-ROM, CD-ROM XA, CD-I, CD-I Bridge (Photo-CD, Video-CD) Multisession CD (Phto-CD, CD-EXTRA, CD-R, CD-RW, Portfolio), CD-R, CD-RW

DVD-ROM [DVD-5, DVD-9, DVD-10, DVD-18] DVD-R

DVD-RW

DVD-RAM

1-10

Satellite P20-25 Series Maintenance Manual

1.4 Removable Drives

1 Hardware Overview

1.4.3 DVD-ROM Drive

The DVD-ROM drive (Toshiba SD-C2612 or Matsushita SR-8177) accommodates either 12cm (4.72-inch) or 8cm (3.15-inch) CDs or DVDs.

Transfer rates

Matsushita SR-8177: The DVD-ROM drive is able to read CD-ROM, CD-R data at 10.3X to 24X CAV mode speed and CD-RW data at 5.1X to 12X CAV mode speed. The drive has a transfer rate of max. 3 600 kbyte/s for CDROM data, CD-R and max. 1 800 kbyte/s for CD-RW data. The drive is able to read DVD disc at CAV mode speed. The drive has a transfer rate of max. 11.08 Mbyte/s for DVD data.

Toshiba SD-C2612: Max.8X (DVD-ROM) / Max. 24X (CD-ROM)/2X (DVD-RAM Ver.1.0)/1X (DVD-RAM Ver.2.1)

Max. 10,820 KByte/s (DVD-ROM)/Max. 3,600KByte/s (CD-ROM) Sustained Transfer Rate

Buffer capacity

 

 

Matsushita SR-8177: 256 Kbytes (Max)

 

Toshiba SD-C2612

192 Kbytes (Max)

 

Supported formats

 

 

CD: CD-Audio

CD-ROM (mode 1 and mode 2)

CD-ROM XA (mode 2, form 1 and form 2)

CD-I Bridge

CD-I (mode 2, form 1 and form 2)

CD-TEXT

Video CD

CD-RW

Photo CD

CD-WO**

Enhanced Music CD (CD Plus)**

CD-I Ready**

CD+(E)G*

CD-MIDI*

CD-R*

DVD: DVD-5

DVD-9

DVD-10

DVD-18*

DVD-RAM (2.6G/4.7G)

DVD-R (3.95G/4.7G)

DVD-RW

 

 

*Toshiba SD-C2612 only

**Matsushita SR-8177only

Satellite P20-25 Series Maintenance Manual

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1 Hardware Overview

1.4 Removable Drives

1.4.4 DVD Multi-Drive

The Matsushita UJ-811B DVD multi-drive is capable of driving either 12cm (4.72-inch) or 8cm (3.15-inch) DVDs and CDs without using an adaptor.

Read speed

 

DVD-ROM

Max 8X CAV (MAX 10800 kB/s)

CD-ROM

Max 24X CAV (MAX 3600 kB/s)

Write speed

 

CD-R :

Max16X Zone CLV

CD-RW

4X CLV

High Speed CD-RW

8XCLV

DVD-R

2XCLV

DVD-RW

1X CLV

DVD-RAM

2X ZCLV ( 4.7GB)

Access Speed

 

DVD-ROM

180ms (Typ.) (Random)

CD-ROM

150ms(Typ.) (Random)

ATAPI Interface

 

PIO mode

16.6 MB/s :PIO mode4

DMA mode

16.6 MB/s :Multi word mode2

Ultra DMA mode

33.3 MB/s :Ultra DMA mode2

Buffer Memory

2MB

Supported formats

 

CD: CD-DA CD-R Video CD CD-TEXT

CD-ROM

CD-R/W

CD-ROMXA

CD-I Ready

PhotoCD(multi-session)

Cd-Extra(CD+)

DVD: DVD-Video

DVD-ROM

DVD-R(3.9GB, 4.7GB)

DVD-RAM

DVD-RW(Ver.1.1)

 

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Satellite P20-25 Series Maintenance Manual

1.4 Removable Drives

1 Hardware Overview

1.4.5 Combo Drive

The CD-RW/DVD-ROM combo drive (Toshiba SD-R2412 or TEAC DW-224E-85) is capable of driving either 12cm (4.72-inch) or 8cm (3.15-inch) DVDs and CDs without using an adaptor.

Read speeds

 

 

 

DVD-ROM

Maximum 8 times faster rotational speed

DVD-RAM

Standard rotational speed

CD-ROM

Maximum 24 times faster rotational speed

Write speeds

 

 

 

CD-R

4,8,16,24 times faster rotational speed

CD-RW

4 times faster rotational speed

High-Speed CD-RW

4,10 times faster rotational speed

Access Speed

 

 

 

Average Random Access Time

DVD:

100 ms typ (Toshiba SD-R2412)

 

 

 

110 ms typ (TEAC DW-224E-85)

 

 

CD:

90 ms typ (10.3-24X)

 

 

DVD-RAM:

170 ms*

Average Random Seek Time

 

DVD:

85 ms typ*

 

 

CD:

80 ms typ (10.3-24X)*

 

 

DVD-RAM: 130 ms typ*

Average Full Stroke Access Time

DVD:

170 ms typ*

 

 

CD:

160 ms typ (10.3-24X)*

 

 

DVD-RAM:

300 ms*

* Toshiba SD-R2412

Buffer capacity

Supported formats

Applicable CD Write Formats: Applicable CD Write Disc:

Applicable CD

Read Disc:

DVD

2 Mbytes (Max)

CD-R

CD-RW

CD-R

CD-RW [CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, CD-ROM, CD-ROM XA, MIXED MODE CD, CD-I, CD-I Bridge (Photo-CD, Video-CD), Multisession CD (Photo-CD, CD-EXTRA, Portfolio)]

CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, CD-ROM, CD-ROM XA, MIXED MODE CD, CD-I, CD-I Bridge (Photo-CD, Video-CD), Multisession CD (PhotoCD, CD-EXTRA, Portfolio, CD-R, CD-RW), CD-R, CD-RW

DVD-ROM [DVD-5, DVD-9, DVD-10, DVD-18] DVD-R

DVD-RW

DVD-RAM

Satellite P20-25 Series Maintenance Manual

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1 Hardware Overview

1.5 Power Supply

1.5Power Supply

The power supply supplies seven different voltages to the system board and performs the following functions:

1.A/D conversion

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

AC adaptor current

Battery and temperature

2.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

3.Abnormal check

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

4.Input port management

The EC monitors the following input signal status:

System power ON/OFF status

Direct CD power ON/OFF status

5.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.

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Satellite P20-25 Series Maintenance Manual

1.5 Power Supply

1 Hardware Overview

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

6.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

7.Battery charging control

The EC controls the following.

The quick charging ON/OFF

The detection of full charge

8.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.

9.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.

10.Battery capacity calculation

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

Satellite P20-25 Series Maintenance Manual

1-15

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

Lithium-Ion

14.8 V

6450mAH

 

 

 

 

RTC battery

Lithium

3.3 V

15 mAh

 

 

 

 

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

 

 

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Satellite P20-25 Series Maintenance Manual

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