Toshiba P25 manual

Toshiba Personal Computer Satellite P20-25 Series Maintenance Manual TOSHIBA CORPORATION[...]

ii Satellite P20-25 Series Maintenance Manual 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 inform ation contained herein. Toshiba Personal Computer Sa[...]

Satellite P20-25 Series Maintenance Manual iii 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 Replaceabl[...]

iv Satellite P20-25 Series Maintenance Manual 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[...]

Satellite P20-25 Series Maintenance Manual v Conventions This manual uses the following formats to describe, identify, and highlight term s 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[...]

vi Satellite P20-25 Series Maintenance Manual[...]

Satellite P20-25 Series Maintenance Manual vii Table of Contents Chapter 1 Hardware Overview 1.1 Features ................................................................................................................... ... 1-1 1.2 System Unit ........................................................................................................[...]

viii Satellite P20-25 Series 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 Tes[...]

Satellite P20-25 Series Maintenance Manual ix Chapter 4 Replacement Procedures 4.1 General .................................................................................................................... ...... 1 4.2 Battery .................................................................................................................... ....[...]

x Satellite P20-25 Series Maintenance Manual Appendices Appendix A Handling the LCD Module ........................................................................... A-1 Appendix B Board Layout ................................................................................................ B-1 Appendix C Pin Assignments............................[...]

Chapter 1 Hardware Overview[...]

1 Hardware Overview 1-ii Satellite P20-25 Series Main tenance Manual[...]

1 Hardware Overview Chapter 1 Contents 1.1 Features ................................................................................................................... ...... 1 1.2 System Unit ................................................................................................................ ... 5 1.3 2.5-inch Hard Disk Drive .........[...]

1 Hardware Overview 1-iv Satellite P20-25 Series Ma intenance Manual[...]

1.1 Features 1 Hardware Overview 1.1 Features The Satellite P20-25 Series Pers onal Computer uses extensive La rge Scale Integration (LSI), and Complementary Metal-Oxide Sem iconductor (CMOS) technology extensively to provide compact size, minimum weight and high reliab ility. This computer incorporates the following features and benefits:  CPU [...]

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 devi[...]

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/RJ[...]

1 Hardware Overview 1.1 Features  Sound system A Cirrus logic ALC202 for AC97 codec audi o subsystem offers industry leading mixed signal technology to enhance the com puter’s multimedia capability. The sound system is equipped with stereo speak ers and jacks for headphone and external microphone.  TV-out port This video-out mini-jack enabl[...]

1.2 System Unit 1 Hardware Overview 1.2 System Unit The system unit is composed of the following m ajor 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/H[...]

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 NVI DIA extensions) Graphics APIs hardware support[...]

1.2 System Unit 1 Hardware Overview • Dual 12-bit or Single 24-bit configurab le 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) – enable d by improved filtering, adaptive de- interlacing & per-pixel gamma-c orrection hardware c[...]

1 Hardware Overview 1.4 Removable Drives 1.3 2.5-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-W inchester 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 1.4 Removable Drives The module compartments can accommoda te the following rem ovable 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 1.4.1 3.5-inch Floppy Disk Drive The 3.5-inch FDD i[...]

1 Hardware Overview 1.4 Removable Drives 1.4.2 DVD-R/-RW Drive The DVD-R/-RW drive (Toshiba SD-R6112) acco mmodates 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 [...]

1.4 Removable Drives 1 Hardware Overview 1.4.3 DVD-ROM Drive The DVD-ROM drive (Toshiba SD-C2612 or Ma tsushita 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 da ta at 5.1X to 12X CAV mode sp[...]

1 Hardware Overview 1.4 Removable Drives 1.4.4 DVD Multi-Drive The Matsushita UJ-811B DVD multi-drive is ca pable 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[...]

1.4 Removable Drives 1 Hardware Overview 1.4.5 Combo Drive The CD-RW/DVD-ROM combo drive (Toshi ba 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 [...]

1 Hardware Overview 1.5 Power Supply 1.5 Power Supply The power supply supplies seven different volta ges 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[...]

1.5 Power Supply 1 Hardware Overview • Orange = The computer is quick-chargi ng the battery / The b attery 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 quic[...]

1 Hardware Overview 1.6 Batteries 1.6 Batteries The computer has two types of battery:  Main battery pack (18650 size)  RTC battery The removable main battery pack is the comput er’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 [...]

1.6 Batteries 1 Hardware Overview 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 mi croprocessor automatically stops the charge after eight hours regardle[...]

1 Hardware Overview 1.6 Batteries  Detection of full charge A full charge is detected from the battery pack through SMBus when the battery is charging. 1.6.2 RTC battery The RTC battery provides power to keep the curr ent date, time and other setup information in memory while the computer is turned off. The table below lists the charging time an[...]

1.6 Batteries 1 Hardware Overview Satellite P20-25 Series Main tenance Manual 1-19[...]

Chapter 2 Troubleshooting Procedures[...]

2 Troubleshooting Procedures 2-ii Satellite P20-25 Series Main tenance Manual[...]

2 Troubleshooting Procedures Chapter 2 Contents 2.1 Troubleshooting Introduction .................................................................................... 2-1 2.2 Troubleshooting Flowchart ........................................................................................ 2-2 2.3 Power Supply Troubleshooting.........................[...]

2 Troubleshooting Procedures Figures Figure 2-1 Troubleshooting flowchart (1/2) .................................................................... 2-3 Figure 2-1 Troubleshooting flowchart (2/2) .................................................................... 2-4 Figure 2-2 Power Supply Troubleshooting Process .................................[...]

2.1 Troubleshooting Introduction 2 Troubleshooting Procedures 2.1 Troubleshooting Introduction Chapter 2 describes how to determine if a Fi eld Replaceable Unit (FRU) in the com puter is causing the computer to malfunction. The FRUs covered are: 1. Display 6. Printer (para llel) port 11. PCMCIA unit 2. Floppy Disk Drive 7. TouchPad 12. IEEE 1394 po[...]

2 Troubleshooting Procedures 2.2 Troubleshooting Flowchart 2.2 Troubleshooting Flowchart If you know the location of the ma lfunction, turn directly to the appropriate section of this chapter. If the problem is unspecified, use the fl owchart in Figure 2-1 as a guide for determ ining which troubleshooting procedures to execute . Before performing a[...]

2.2 Troubleshooting Flowchart 2 Troubleshooting Procedures STA RT C o nnect t he A C adapter to t he D C - IN socket Is the D C -IN L E D o n? Is th e B a tte r y L E D o n ? T u r n th e P o w e r s w itc h o n I s t h e Po we r On LE D o n ? I s t he " T oshi ba" l ogo m es sa ge di spl ay ? If t he "p a ssw o rd" m essag e d [...]

2 Troubleshooting Procedures 2.2 Troubleshooting Flowchart A Does ty ped characters appear correctly? Insert the diagnostics disk into the FDD. Then run the diagno stics test program. Is the diagnostics test loaded? Allow each test to perform automatically Is an error detected by any of the diagnostics tests? Sy stem is normal End Yes Yes Yes No Pe[...]

2.2 Troubleshooting Flowchart 2 Troubleshooting Procedures If the diagnostics program cannot detect an erro r, the problem may be intermittent. The test program should be executed several times to isol ate the problem. W hen a problem has been located, perform the appropriate trou bleshooting procedures as follows: 1. If an error is detected by the[...]

2 Troubleshooting Procedures 2.2 Troubleshooting Flowchart Other problems that are not covered by the diag nostics program may be discovered by a user. 1. If an error is detected wh en using an external USB devi ce, perform the External USB Devices Troubleshooting pr ocedures in Section 2.7. 2. If an error is detected when using the TV-out connecti[...]

2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting ST AR T Are the DC -I N and B atte ry L E D s lit? Can you tur n the com puter on? A r e the in te r na l p o w er connecti ons secure? END Check P ower Sup ply Stat us (Procedure 1) No Yes Chec k po wer suppl y connect ions (Procedure 3) R un diag nost i[...]

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting The power supply controls many functions and com ponents. To determ ine if the power supply is functioning properly, start with Proc edure 1 and continue with the ot her Procedures as instructed. The flowchart in Figure 2-2 give s a summary of the process. Th e procedures described in th[...]

2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures Table 2-2 DC-IN LED AC-IN LED Power supply status Solid on AC power exists (LED is solid green). Off No AC power exists. To check the power supply status, install a batter y pack and connect an AC adaptor to the DC-IN port on the computer and to a power supply. If the DC-IN LED or Batter[...]

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting Procedure 3 Power supply connection check The power supply wiring diagram is shown below: AC adaptor Sys t e m boar d B a tte ry A C adapt or cord AC p o we r c o r d Any of the connectors may be disconnected. Perform Check 1. Check 1 Disconnect the AC power cord from wall outlet. Check [...]

2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures Procedure 4 Diagnostic check The power supply may not charge the battery pack. Perform the following procedures: 1. Reinstall the battery pack. 2. Attach the AC adaptor and turn on the pow er. If you cannot turn on the power, go to Procedure 5. 3. Run the Diagnostic test following the pr[...]

2 Troubleshooting Procedures 2.4 Display Troubleshooting 2.4 Display Troubleshooting P er f orm ext ernal d i spl ay check (P ro ce d u re 1 ) ST A RT D o es t he ext ernal d is p la y fu n ctio n o k ? Per f or m di ag nos t i c c heck (P ro ce d u re 2 ) No Wa s a d i s p l a y pr obl em det ect ed? Per f or m conne ct or an d re pl acem ent chec[...]

2.4 Display Troubleshooting 2 Troubleshooting Procedures This section describes how to determine if the computer’s display is functioning properly. The process is outlined in Figure 2-3. Start with Procedure 1 and continue with the other procedures as instructed. Procedure 1: External display check Procedure 2: Diagnostic check Procedure 3: Conne[...]

2 Troubleshooting Procedures 2.4 Display Troubleshooting Procedure 3 Connector and replacement check The FL inverter board, LCD module, and system board are connected to the display circuits. Any of these components may be dam aged. Refer to Chapter 4, Replacement Procedures, for instructions on how to disassemble the computer and then perform the [...]

2.5 FDD Troubleshooting 2 Troubleshooting Procedures 2.5 FDD Troubleshooting P er f orm FD D headcl eani ng check (P ro ce d u re 1 ) ST A RT Wa s a F D D pr obl em det ect ed? P erf o rm connect or and repl acem ent check (P ro ce d u re 3 ) R eplace s yst em b oard END Ye s No F D D is n o t fa u lty . C ont i nue t roubles ho ot ing- re f er t o[...]

2 Troubleshooting Procedures 2.5 FDD Troubleshooting This section describes how to determine if the removable FDD m odule is functioning properly. Perform the steps below starting with Procedure 1 and continuing as required. Figure 2-4 gives an outline of the process. Procedure 1: FDD head cleaning check Procedure 2: Diagnostic check Procedure 3: C[...]

2.6 Keyboard Troubleshooting 2 Troubleshooting Procedures 2.6 Keyboard Troubleshooting P er f orm ext ernal keybo ar d check (P ro ce d u re 1 ) ST A RT D o es t he ext ernal keyboard f unct i o n ok? Per f or m di ag nos t i c c heck (P ro ce d u re 2 ) W as a k eyboa rd pr obl em det ect ed? Per f or m conne ct or an d re pl acem ent check (P ro [...]

2 Troubleshooting Procedures 2.6 Keyboard Troubleshooting To determine if the computer’s keyboard is functioning properly, perform the following procedures. Figure 2-5 outlines the process. Start with Procedure 1 and co ntinue with the other procedures as instructed. Procedure 1: External keyboard check Procedure 2: Diagnostic check Procedure 3: [...]

2.7 External USB Devices Troubleshoo ting 2 Troubleshooting Procedures 2.7 External USB Devices Troubleshooting R eplace s yst em b oard (P ro ce d u re 2 ) END O r ig in a l U S B d e v ic e is fa u lty P e rfo rm e x tern a l de v ice an d connect i on check (P ro ce d u re 1 ) ST A RT D o e s th e d e v ic e fu n c tio n w hen connect ed t o a d[...]

2 Troubleshooting Procedures 2.7 External USB Devices Troubleshooting To determine if the computer’s external US B devices are functioning properly, perform the following procedures. Figure 2-6 outlines the proce ss. Start with Procedure 1 and continue as instructed. Procedure 1: External device and connection check Procedure 2: Replace syst em b[...]

2.8 TV-Out Failure Troubleshootin g 2 Troubleshooting Procedures 2.8 TV-Out Failure Troubleshooting P er f orm T V connect i o n check (P ro ce d u re 1 ) ST A RT D o es r ep l acem ent T V cabl e f uncti o n properl y? Per f or m T V s et ch e ck (P ro ce d u re 2 ) R eplace s yst em b oard END No R eplace TV cabl e No T V f unct i oning ok? Ye s [...]

2 Troubleshooting Procedures 2.8 TV-Out Failure Troubleshooting To determine if the computer’s TV-out por t is functioning properly, perform the following procedures. Figure 2-7 outlines the process. Start with Procedure 1 and co ntinue as instructed. Procedure 1: TV connection check Procedure 2: TV set check Procedure 1 TV connection check The T[...]

2.9 Printer Port Troubleshooting 2 Troubleshooting Procedures 2.9 Printer Port Troubleshooting START Perform diagnostic check (Procedure 1) Does the print port function ok? Perform print port loopback check (Procedure 2) Print port is not faulty continue troubleshooting refer to Figure 2.1 Was a print port problem detected? Replace system board (Pr[...]

2 Troubleshooting Procedures 2.9 Printer Port Troubleshooting To determine if the computer’s printer (par allel) port is functioni ng properly, perform the following procedures. Figure 2-8 outlines the proce ss. Start with Procedure 1 and continue as instructed. Procedure 1: Diagnostic check Procedure 2: Printer port loopback check Procedure 3: R[...]

2.10 Touch Pad Troubleshooting 2 Troubleshooting Procedures 2.10 TouchPad Troubleshooting START END To uchP ad c onnec tion check (Procedure 1) TouchPad replacement check (Procedure 2) Replace sy stem board Figure 2-9 TouchPad troubleshooting process Satellite P20-25 Series Main tenance Manual 2-25[...]

2 Troubleshooting Procedures 2.10 TouchPad Troubleshooting To determine if the computer’s built-in TouchP ad is functioning properly, perform the following procedures. Figure 2-9 outlines the process. Start with Procedure 1 and co ntinue as instructed. Procedure 1: TouchPad connection check Procedure 2: TouchPad replacem ent check Procedure 1 Tou[...]

2.11 Speaker Troubleshooting 2 Troubleshooting Procedures 2.11 Speaker Troubleshooting START Do al l so urces ha ve sam e problem? END Per for m earpho ne te st (Procedure 2 ) Do earphones function correctly ? Perform connection ch eck (Procedure 3 ) Perform replacement check (Procedure 4 ) Perform audio sour ce tes t (Procedure 1 ) No Yes Yes Repl[...]

2 Troubleshooting Procedures 2.11 Speaker Troubleshooting 2-28 Satellite P20-25 Series Maintenan ce Manual To determine if the computer’s built-in speaker s are functioning properly, perform the following procedures. Figure 2-10 outlines the process. Firs t adjust the s peaker volume to an appropriate level. Start with Procedure 1 and continue as[...]

2.12 Optical Drive Troubleshooting 2 Troubleshooting Procedures 2.12 Optical Drive Troubleshooting START Audio CD fu nctions ok? END Perform softw are check (Procedure 3) Perform diagnostic test (Procedure 4) Perfo rm connection and replacem ent check (Procedure 5) Perfor m a udio C D check (Procedure 1) Perf orm drive - cleaning c heck (Procedu re[...]

2 Troubleshooting Procedures 2.12 Optical Drive Troubleshooting This section describes how to determine if the computer’s internal optic al drive is functioning properly. The Satellite P20 module bays can accommodate the following optical driv es: • DVD-R/RW device • DVD-ROM device • DVD Multi-drive device • COMBO device Figure 2-11 outli[...]

2.12 Optical Drive Troubleshooting 2 Troubleshooting Procedures Procedure 5 Connection check and replacement check The optical drive connects to the system board. Th e drive may be disconnected, or the drive or system board may be dam aged. Disassemble th e com puter following the steps described in Chapter 4, Replacement Procedures , and perform t[...]

2 Troubleshooting Procedures 2.13 Modem Troubleshooting 2.13 Modem Troubleshooting ST ART Com puter un able to detect t eleph one si gnal ? END Perform connection check (Procedure 2) Perform replacemen t check (Procedure 3) Perform telephone line connection check (Procedure 1) Check / replac e teleph one line and connect ions Yes Replace sy stem bo[...]

2.13 Modem Troubleshooting 2 Troubleshooting Procedures This section describes how to determine if th e computer's modem is functioning properly. Figure 2-12 outlines the process. Perform the steps belo w starting with Procedure 1 and continuing with the other procedures as required. Procedure 1: Telephone line connection check Procedure 2: Mo[...]

2 Troubleshooting Procedures 2.14 PCMCIA Troubleshooting 2.14 PCMCIA Troubleshooting ST ART Do errors occu r during SYCARD test ? Perform PCMCIA sock et replacem ent che ck (Procedure 2) Replace sy stem board END PCMCIA un it is not faulty. Perform SYCARD test (Procedure 1) No Yes Figure 2-13 PCMCIA troubleshooting process 2-34 Satellite P20-25 Ser[...]

2.14 PCMCIA Troubleshooting 2 Troubleshooting Procedures This section describes how to determine if the PCMCIA card player is functioning properly. The process is summarized in Figure 2-13. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required. Procedure 1: Sycard test Procedure 2: PCMCIA socket repl[...]

2 Troubleshooting Procedures 2.15 IEEE 1394 Troubleshooting 2.15 IEEE 1394 Troubleshooting START Per for m I EEE 1394 devi ce chec k (Procedure 1) I s I EEE 1394 tr ansmissi on ok? Perform diagnostic check (Procedure 2) W as an IEEE 13 94 problem detected? Perform con nection and replacem ent check (Procedure 3) Rep lace sy stem board END Yes Yes I[...]

2.15 IEEE 1394 Troubleshooting 2 Troubleshooting Procedures To determine if the computer’s IEEE 1394 syst em is functioning properly, perform the following procedures. Figure 2-14 outlines the process. Start with Procedure 1 and c ontinue with the other procedures as instructed. Procedure 1: IEEE 1394 device check Procedure 2: Diagnostic check Pr[...]

2 Troubleshooting Procedures 2.16 Wireless LAN Troubleshooting 2.16 Wireless LAN Troubleshooting START Perform diagnos tic test (Procedure 1) Was a wir eless LA N prob lem dele cted? Perform connector and repl acement check (Procedure 2) Repl ace wireless LAN antenna/uni t Replace system board END Yes Wireless LAN sy stem is not faulty . Continue t[...]

2.16 Wireless LAN Troubleshooting 2 Troubleshooting Procedures The wireless LAN antenna wire, wireless LAN unit or system board m ay each be the source of a wireless LAN fault. Any of these components ma y be damaged. To determine if the com puter’s wireless LAN system is func tioning properly, perform the foll owing procedures. Figure 2-15 outli[...]

2 Troubleshooting Procedures 2.17 Bluetooth Troubleshooting 2.17 Bluetooth Troubleshooting START Preform diagnostic test (Procedure 1) Was a Bluetooth problem detected? Bluetooth is not faulty. Continue troubl eshooting-refer to Figure 2.1 Replace system board Perform connector and replacement check (Procedure 2) Replace Bluetooth module END No Yes[...]

2.17 Bluetooth Troubleshooting 2 Troubleshooting Procedures The Bluetooth antenna wire, Bluetooth module or system board may be the source of a Bluetooth fault. Any of these components may be damaged. To determ ine if the computer’s Bluetooth system is functioning properly, perform the following procedures. Figure 2-16 outlines the process. Start[...]

2 Troubleshooting Procedures 2.17 Bluetooth Troubleshooting 2-42 Satellite P20-25 Series Ma intenance Manual[...]

Chapter 3 Tests and Diagnostics[...]

3. Tests and Diagnostics 3-ii Satellite P20-25 Series Maintenance Manual[...]

Test and Diagnostic Operation Contents 3.1 The Diagnostic Test ................................................................................................... 3-1 3.2 Executing the Diagnostic Test ................................................................................... 3-2 3.3 Config Check Test........................................[...]

3. Tests and Diagnostics 3-iv Satellite P20-25 Series Maintenance Manual[...]

3.1 The Diagnostic Test 3. Tests and Diagnostics 3.1 The Diagnostic Test This chapter explains how to use the Test & Diagnostic program to test the functions of the computer’s hardware modules. The Test & Diagnostic Program is stored on the T&D diskettes. The program consists of a series of tests that run automatically when the Diagno[...]

3. Tests and Diagnostics 3.2 Executing the Diagnostic Test 3.2 Executing the Diagnostic Test Toshiba MS-DOS is required to run the DIAGNOSTICS PROGRAM. To start the DIAGNOSTIC PROGRAM, follow these steps: 1. Insert the diagnostics diskette #1 in the floppy disk drive and turn on the computer. (The diagnostics diskette contains the MS-DOS boot files[...]

3.2 Executing the Diagnostic Test 3. Tests and Diagnostics The below display will show up at the beginning of T&D program. If the test result passes, the following display will show up: Satellite P20-25 Series Maintenance Manual 3-3[...]

3. Tests and Diagnostics 3.2 Executing the Diagnostic Test If an error is detected and a test fails, the following message displays: Then press any key for next actions – the below display presented if copying test log file onto diskette is necessary. This action will be executed when “ Y ” key pressed. It will skip this process if “N” ke[...]

3.2 Executing the Diagnostic Test 3. Tests and Diagnostics And then it will check if it’s necessary to leave this program. Program will quit when “ Y ” key pressed and it will go back main menu f or next test if “ N ” key pressed. NOTE : Press Pause to pause a test and Enter to resume. Satellite P20-25 Series Maintenance Manual 3-5[...]

3. Tests and Diagnostics 3.3 Config Check Test 3.3 Config Check Test The config check test checks unit configuration. It includes:  CPU type  System memory size  ODD type  HDD type & capacity  BIOS version This test needs input unit Part Number by ma nual to make comparison with known SKU data. NOTE : To execute this test, you mu[...]

3.4 DMI Check Test 3. Tests and Diagnostics 3.4 DMI Check Test This test will check if the computer’s Desktop Management Interface (DMI) is correct. DMI includes:  Manufacturer  Production Nam e  Version  Serial Num ber  UUID  OEM String It needs to input unit Part Number by manual, then show this unit DMI inform ation and makes[...]

3. Tests and Diagnostics 3.5 PIO Loopback Test 3.5 PIO Loopback Test The PIO loopback test will check below items through PIO loopback connector.  External Interrupt  External Loopback - including Pattern test, Data Pin test, Control register test & Control pin/ Status pin test. NOTE : Remember to connect a PIO loopback connector to the c[...]

3.6 IEEE 1394 Test 3. Tests and Diagnostics 3.6 IEEE 1394 Test The IEEE 1394 port test checks transmission between the computer and a secondary device along an IEEE 1394 line. An IEEE 1394 transmission line must be firm ly connected between the computer and the device before the test is started. The test requires: 1. An IEEE 1394-compatible device [...]

3. Tests and Diagnostics 3.7 Speaker Audio Test 3.7 Speaker Audio Test The speaker audio test allows the user to aurally confirm the speaker functions. And check both speakers if they are OK within 3 times “Beep” sound generated. NOTE : Remember to tune up the volume as “ Maximum ” before this test starts. The screen should display as below[...]

3.8 Fan ON/OFF Test 3. Tests and Diagnostics 3.8 Fan ON/OFF Test The fan test allows the user to test aurally whether the fan is working. And follow the below procedures for this test:  The com puter will let the fan be “ON” after any key pressed. Listen to check whether the fan is working. NOTE : Remember to approach fan outlet that is near[...]

3. Tests and Diagnostics 3.9 Main Battery Change Test 3.9 Main Battery Charge Test NOTE : The AC adaptor ( 120W, 19V ) should be connected to successfully run this test. This test shows and measures the main battery:  Battery type (Ni-MH / Lion)  Manufacturer (Sony / Sanyo)  Rem ain charge capacity (0 ~ 100%)  Charge function (PASS/FAIL[...]

3.10 FDD Test 3. Tests and Diagnostics 3.10 FDD Test NOTE : Before running the FDD test, prepare a formatted work diskette (1.44 MB). Remove the diagnostics diskette and insert the work diskette into the FDD. The contents of the floppy diskette maybe erased. The Floppy Disk Test includes three subtests of the: 1. Sequential seek/verify function (Ra[...]

3. Tests and Diagnostics 3.11 CD-ROM Test 3.11 CD-ROM Test The CD-ROM test allows a user to aurally confirm the CD-ROM functions. NOTE : A CD disc (including data file) must be inserted into the CD-ROM drive before this test starts. The CD-ROM test includes two subtests of the: 1. Random read/partial sequential read function 2. Sequential read func[...]

3.12 Keyboard Test 3. Tests and Diagnostics 3.12 Keyboard Test The keyboard test checks the all keys function. NOTE: The Num Lock and the Overlay mode must be off to execute the keyboard test. Before keyboard test starts, the keyboard matrix code should be chosen as below display: 1. K (UK, for Europe) 2. S (US, for America) 3. J (JP, for Japan) Wh[...]

3. Tests and Diagnostics 3.12 Keyboard Test 3-16 Satellite P20-25 Series Maintenance Manual[...]

3.12 Keyboard Test 3. Tests and Diagnostics Pressing a key also reveals that key’s scan codes in the upper right hand corner of the screen. When the key is depressed, its make code is displayed. When the key is released, the break code is shown. Satellite P20-25 Series Maintenance Manual 3-17[...]

3. Tests and Diagnostics 3.13 Mouse (Pad) Test 3.13 Mouse (Pad) Test The Mouse test allows the user to select and assign values to the following, using the Touch Pad or “ Tab ” key to move between selections: 1. Mouse Speed (on a scale from slow to fast) 2. Acceleration (Off, Low, Medium, High) 3. Button Assignments (Left + Right / Right button[...]

3.13 Mouse (Pad) Test 3. Tests and Diagnostics NOTE: The above figure has three compartments although the Touch Pad installed may only have two buttons. In this case, the central compartment in the figure does not correspond to any button. Satellite P20-25 Series Maintenance Manual 3-19[...]

3. Tests and Diagnostics 3.14 LCD Pixels Mode Test 3.14 LCD Pixels Mode Test This LCD pixels mode test checks whether video display is fine. This test includes two modes of the test: 1. Text Mode - including 40*25 (16 colors) and 80*25 (2/16colors). 2. VGA Mode - including 320*200 (4/16/256 colors), 640*200 (2/16 colors), 640*350 (2/16 colors), 640[...]

3.15 Lid Switch Test 3. Tests and Diagnostics 3.15 Lid Switch Test The lid switch test checks the lid function of the unit. When LCD cover closed, the lid should enable to turn off the display. NOTE : Remember to tune up the volume as “ Maximum ” before this test starts. Follow below steps to run this test: 1. Close the LCD cover. 2. Heard 3 ?[...]

3. Tests and Diagnostics 3.16 HDD R/W Test 3.16 HDD R/W Test The HDD R/W test allows the user to test aurally HDD read/write function. For data security concern, it is necessary to input password - “ TOSHIBA ” before HDD write test starts. The HDD test includes three subtests of the: 1. Sequential read (all surface) 2. Sequential write (all sur[...]

3.16 HDD R/W Test 3. Tests and Diagnostics NOTE : Press “ Ctrl + Break ” keys can terminate the current subtest. The screen should display as previous picture, indicating whether the subtest is passed or failed when finished. NOTE : The AC adaptor should be connected to successfully run this test. Satellite P20-25 Series Maintenance Manual 3-23[...]

3. Tests and Diagnostics 3.17 LAN Test 3.17 LAN Test The LAN test checks the LAN full-duplex environment. NOTE: LAN loopback needs to plug in before test begins. And LAN information will show on the test screen:  IO Base – Port: 3000H  IRQ – AH, it’s “IRQ 10”.  Node – it is “MAC Address”.  Line Fram e – 1514 Bytes. [...]

3.17 LAN Test 3. Tests and Diagnostics The screen should display as below, indicating whether the subtests pass or fail when finished. Satellite P20-25 Series Maintenance Manual 3-25[...]

3. Tests and Diagnostics 3.18 RTC Test 3.18 RTC Test Checks the computer’s RTC (Real Time Clock) and calendar functions by com paring the DOS and CMOS values. The test runs automatically. The screen should display as below, indicating whether the test is passed or failed when finished. 3-26 Satellite P20-25 Series Maintenance Manual[...]

3.19 CD Control Button Test 3. Tests and Diagnostics 3.19 CD Control Button Test The CD control button test allows the user to manually test each of the five CD control buttons. The figure below will be displayed: Press each of the buttons on the front panel in turn. A yellow bar will appear on the relevant section of the figure if the button passe[...]

3. Tests and Diagnostics 3.18 RTC Test 3-28 Satellite P20-25 Series Maintenance Manual[...]

Chapter 4 Replacement Procedures[...]

4 Replacement Procedures 4-ii Satellite P20-25 Series Maintenance Manual[...]

4 Replacement Procedures Chapter 4 Contents 4.1 General .................................................................................................................... ... 4-1 4.2 Battery .................................................................................................................... .... 4-7 4.3 PC Card ...................[...]

4 Replacement Procedures 4-iv Satellite P20-25 Series Maintenance Manual[...]

4.1 General 4 Replacement Procedures 4.1 General This chapter explains how to disassemble the computer and replace Field Replaceable Units (FRUs). It may not be necessary to remove all the FRUs in order to replace one. The chart below is a guide to which FRUs need to be removed in order to remove others. Always start by removing the battery pack, n[...]

4 Replacement Procedures 4.1 General The example below shows FRUs to be removed before the LED / power button board can be removed and repaired or replaced. The LED / power button board is overlapped by the top cover which must be removed before the LED / power button board can be reached. The top cover is in turn overlapped by the removable main m[...]

4.1 General 4 Replacement Procedures Safety Precautions Before you begin disassembly, read the following safety precautions and observe them carefully as you work. DANGER: 1 . Always use the lithium ion battery pack or backup battery that is authorized by Toshiba or compatible with the unit. Since other battery packs have different specifications, [...]

4 Replacement Procedures 4.1 General Before You Begin Look over the procedures in this section before you begin disassembling the computer. Familiarize yourself with the disassembly and reassem bly steps. Begin each procedure by removing the AC adaptor and the battery pack as instructed in section 4.2. 1. Do not disassemble the com puter unless it [...]

4.1 General 4 Replacement Procedures Disassembly Procedures The computer has two basic types of cable connectors:  Pressure Plate Connectors  Standard Pin Connectors To disconnect a Pressure Plate connector, lift up the tabs on either side of the connector’s plastic pressure plate and slide the cable out of the connector. To connect the cab[...]

4 Replacement Procedures 4.1 General Tools and Equipment The use of Electrostatic Discharge (ESD) equipment is very important for your safety and the safety of those around you. Proper use of these devices will increase the success rate of your repairs and lower the cost for damaged or destroyed parts. The following equipment is necessary to disass[...]

4.2 Battery 4 Replacement Procedures 4.2 Battery Removing the Battery Pack To remove the battery pack from the 2 nd m odule bay, follow the steps below. 1. Turn the computer upside down. 2. Unlock the 2 nd module bay lock . 3. Slide the 2 nd module bay latch to release it then pull the battery pack out from the bay. Fig 4-1: Removing the battery pa[...]

4 Replacement Procedures 4.2 Battery Installing the Battery Pack To install the battery pack in the 2 nd module bay, follow the steps below and refer to the figure in the preceding section. WARNING: The battery is a lithium ion battery and can explode if not properly replaced, used, handled or disposed of. Use only batteries recommended by Toshiba [...]

4.3 PC Card 4 Replacement Procedures 4.3 PC Card Removing a PC Card To remove a PC Card, follow the steps below. 1. Push the eject button for the card you want to release. The button will pop out when you release it. Fig 4-2: Pressing the eject button Satellite P20-25 Series Maintenance Manual 4-9[...]

4 Replacement Procedures 4.3 PC Card 2. Push the eject button once more to pop the PC Card out slightly. 3. Grasp the PC Card and remove it. Fig 4-3: Removing the PC Card 4. Push the eject button back into place, if necessary. 4-10 Satellite P20-25 Series Maintenance Manual[...]

4.3 PC Card 4 Replacement Procedures Installing the PC Card To install the PC Card, follow the steps below and refer to the figures in the preceding section. 1. Make sure the two eject buttons do not stick out. 2. Insert the PC Card and press gently to ensure a firm connection. Satellite P20-25 Series Maintenance Manual 4-11[...]

4 Replacement Procedures 4.4 Removable modules 4.4 Removable modules The Satellite P20 features two bays for the insertion of removable modules. The m ain module bay may house an optical drive, a second HDD or an FDD. The 2nd m odule bay is generally used for the removable battery, but it may also be used with a second Optical Media Drive or a TV t[...]

4.4 Removable modules 4 Replacement Procedures Removing the Main Module To remove the main m odule, follow the steps below: 1. Turn the computer upside down. 2. Unlock the main module bay lock . 3. Slide the main module bay latch to release it then pull the main module out from the bay. Fig 4-4: Removing the main module Satellite P20-25 Series Main[...]

4 Replacement Procedures 4.4 Removable modules Installing the Main Module To install a device in the main module bay, follow the steps below and refer to the figure in the preceding section. 1. Slide the device into the main module bay . The main module bay latch will click automatically and secure the device in position. 2. Engage the main module [...]

4.5 Optical Drive 4 Replacement Procedures 4.5 Optical Drive The Satellite P20 may be fitted with a: DVD-R/-RW device DVD-ROM device DVD Multi-drive device Combo device Disassembling the Optical Drive To disassemble the optical drive, first remove the drive from its module bay, then follow the steps below. 1. Remove three black M2 × 8 screw s and [...]

4 Replacement Procedures 4.5 Optical Drive 3. Pull the optical drive board from the rear of the drive. 4-16 Satellite P20-25 Series Maintenance Manual[...]

4.5 Optical Drive 4 Replacement Procedures Reassembling the Optical Drive To reassemble an optical drive, follow the steps below and refer to the f igure in the preceding section. 1. Fit the optical drive board to the rear panel of the optical drive . 2. Place the drive in the main bracket and secure with four silver M2 × 4 screws (two from each s[...]

4 Replacement Procedures 4.6 TV Tuner 4.6 TV Tuner Disassembling the TV Tuner To disassemble the TV tuner, first remove the tuner from its module bay, then follow the steps below. 1. Remove seven M2 × 8 screws securing the TV tuner case . 2. Lift the lid off the TV tuner case and lift out the TV tuner board (if appropriate, detach the TV tuner tra[...]

4.6 TV Tuner 4 Replacement Procedures Reassembling the TV Tuner To reassemble a TV tuner, follow the steps below and refer to the figure in the preceding section. 1. Position the TV tuner board in the TV tuner case and, if appropriate, attach the TV tuner transfer assembly FPC . 2. Secure the lid of the TV tuner case with seven M2 × 8 screws . Sat[...]

4 Replacement Procedures 4.7 Removable HDD 4.7 Removable HDD Disassembling the Removable HDD To disassemble the removable HDD, first rem ove the drive from its module bay, then follow the steps below. 1. Release the lid latch of the removable HDD container and open the HDD container lid. 2. Ease the HDD out of the container. Fig 4-7: Opening the re[...]

4.7 Removable HDD 4 Replacement Procedures CAUTION : When handling the HDD, do not press the top surface as shown by the arrow. Hold it by the sides. 3. Remove the four M3 × 3 screws that secure the HDD case to the HDD . 4. Lift off the HDD case . Fig 4-8: Removing the HDD case screws Satellite P20-25 Series Maintenance Manual 4-21[...]

4 Replacement Procedures 4.7 Removable HDD 5. Grasp the HDD and peel off the aluminum HDD shielding . 6. Gently pull the HDD connector off the HDD . 4-22 Satellite P20-25 Series Maintenance Manual[...]

4.7 Removable HDD 4 Replacement Procedures Reassembling the Removable HDD To reassemble the removable HDD, follow the steps below and refer to the figure in the preceding section. 1. Attach the HDD connector to the HDD . 2. Wrap the HDD in the aluminum HDD shielding ensuring that the circuit board face of the drive is covered by the black part of t[...]

4 Replacement Procedures 4.8 Removable FDD 4.8 Removable FDD Disassembling the Removable FDD To disassemble the removable FDD, first rem ove the drive from its module bay, then follow the steps below. 1. Remove two M2.5 × 4 screw s from each side of the drive and three M2.5 × 4 screws securing the rear panel. 2. Lift off the FDD bracket . Fig 4-9[...]

4.8 Removable FDD 4 Replacement Procedures Reassembling the Removable FDD To reassemble a FDD, follow the steps below and refer to the figure in the preceding section. 1. Attach the FDD FPC . 2. Place the FDD in the FDD bracket and secure with two M2.5 × 4 screws on each side of the drive and three M2.5x4 screws on the rear panel. Satellite P20-25[...]

4 Replacement Procedures 4.9 Wireless LAN Unit 4.9 Wireless LAN Unit Removing the Wireless LAN Unit To remove the wireless LAN unit , first rem ove the battery pack then follow the steps below. 1. Turn the computer upside down and loosen tw o embedded screws securing the wireless LAN compartment cover . 2. Lift off the wireless LAN compartment cove[...]

4.9 Wireless LAN Unit 4 Replacement Procedures 3. Detach the two ends of the wireless LAN antenna . 4. Gently press out on the latches . One end of the wireless LAN unit will pop up. 5. Grasp the wireless LAN unit and pull it out. Fig 4-11: Removing the wireless LAN unit CAUTION : Do not touch the connectors on the wireless LAN unit or on the compu[...]

4 Replacement Procedures 4.9 Wireless LAN Unit Installing the Wireless LAN Unit To install the wireless LAN unit, follow the steps below and refer to the figures in the preceding section. 1. Turn the computer upside down and loosen tw o embedded screws securing the wireless LAN compartment cover . 2. Lift off the wireless LAN compartment cover . 3.[...]

4.10 Expansion Memory 4 Replacement Procedures 4.10 Expansion Memory Removing the Expansion Memory To remove the expansion mem ory, first remove the battery pack, then follow the steps below. 1. Turn the computer upside down. 2. Remove two embedded screw s securing the expansion memory cover . 3. Lift off the expansion memory cover . Fig 4-12: Remo[...]

4 Replacement Procedures 4.10 Expansion Memory 4. Gently press out on the latches . One end of the expansion memory will pop up. 5. Grasp the expansion memory and pull it out. Fig 4-13: Removing the expansion memory CAUTION : Do not touch the connectors on the expansion memory or on the computer. Debris on the connectors may cause memory access pro[...]

4.10 Expansion Memory 4 Replacement Procedures Installing the Expansion Memory To install the expansion memory, follow the steps below and refer to the figures in the preceding section. 1. Turn the computer upside down. 2. Remove the two embedded screw s securing the expansion memory cover . 3. Lift off the expansion memory cover . 4. Fit the expan[...]

4 Replacement Procedures 4.11 Modem / Bluetooth Unit 4.11 Modem / Bluetooth Unit Optional modem and Bluetooth units occupy the sam e connector so only one can be fitted at a time. The removal and installation procedures are the sam e for both. Removing the Modem / Bluetooth Unit To remove the installed modem or Bluetooth unit, first remove the batt[...]

4.11 Modem / Bluetooth Unit 4 Replacement Procedures 4. Remove two M2.5 × 3 screw s securing the modem / Bluetooth unit . Fig 4-15: Removing the modem / Bluetooth unit screws 5. Carefully lift the unit of f its connector. 6. If a modem is being removed, disconnect its power cable from the system board . If a Bluetooth unit is being removed, discon[...]

4 Replacement Procedures 4.11 Modem / Bluetooth Unit Installing the Modem / Bluetooth Unit To install a modem or Bluetooth unit, follow the steps below and refer to the figures in the preceding section. 1. Turn the computer upside down. 2. Remove two embedded screw s securing the modem / Bluetooth unit cover . 3. Lift off the modem / Bluetooth unit[...]

4.12 CPU 4 Replacement Procedures 4.12 CPU Removing the CPU To remove the CPU, first remove the battery pack, then follow the steps below. 1. Turn the computer upside down and rem ove five embedded security screws securing the CPU compartment cover . Remove the CPU compartment cover . Fig 4-16: Removing the CPU compartment cover Satellite P20-25 Se[...]

4 Replacement Procedures 4.12 CPU 2. Remove four screws securing the heat sink . 3. Lift off the heat sink . In the event that the heat sink is stuck to the CPU, insert a small flathead screwdriver into the hole on the heat sink to gently lever it off). Fig 4-17: Removing the heat sink CAUTION: If you remove the heat sink, you should use the CPU gr[...]

4.12 CPU 4 Replacement Procedures 4. Turn the cam on the CPU socket with a flat-blade screwdriver so that the notch on the cam is aligned with the open side of the CPU socket to unlock the CPU . Fig 4-18: Removing the CPU 5. Gently lift out the CPU . Satellite P20-25 Series Maintenance Manual 4-37[...]

4 Replacement Procedures 4.12 CPU Installing the CPU To install the CPU, follow the steps below and refer to the figures in the preceding section. CAUTION: If you remove the heat sink, you should use the CPU grease tool to remove the grease on the CPU and heat sink. Reapply fresh grease before installing the heat sink. 1. Make sure that the notch o[...]

4.13 HDD 4 Replacement Procedures 4.13 HDD CAUTION : When handling the HDD, do not press the top surface as shown by the arrow. Hold it by the sides. Satellite P20-25 Series Maintenance Manual 4-39[...]

4 Replacement Procedures 4.13 HDD Removing the HDD To remove the HDD, first remove the battery pack, then follow the steps below. 1. Turn the computer upside down. 2. Remove two M2.5 × 4 black screw s securing the HDD and lift out the HDD unit . Fig 4-19: Removing the HDD unit cover screws NOTE: It is not necessary to remove the HDD case unless yo[...]

4.13 HDD 4 Replacement Procedures 3. Remove the four M3 × 3 screws that secure the HDD case to the HDD . Fig 4-20: Removing the HDD unit case screws 4. Lift off the HDD case . 5. Grasp the HDD at the side and peel off the aluminum HDD shielding . 6. Gently pull the HDD connector off the HDD . Fig 4-21: Removing the aluminum HDD shielding and conne[...]

4 Replacement Procedures 4.13 HDD Installing the HDD To install the HDD, follow the steps below and refer to the figures in the preceding section. 1. Slide the HDD connector firmly into place on the HDD , being careful not to damage the connector pins. 2. Wrap the HDD in the HDD shielding ensuring that the circuit board face of the drive is covered[...]

4.14 Keyboard 4 Replacement Procedures 4.14 Keyboard Removing the Keyboard To remove the keyboard, first remove the battery pack, then follow the steps below. 1. Open the display panel . 2. Insert a thin tool into each of the narrow holes in the strip cover and lever the strip cover up to release its latches. Fig 4-22: Removing the strip cover Sate[...]

4 Replacement Procedures 4.14 Keyboard 3. Remove two M2.5 × 3 silver screw s securing the keyboard . 4. Lift the keyboard out and place over the display hinges, revealing the keyboard cable. 5. Disconnect the keyboard cable and remove the keyboard . Fig 4-23: Removing keyboard cable and keyboard 4-44 Satellite P20 Series Maintenance Manual[...]

4.14 Keyboard 4 Replacement Procedures Satellite P20-25 Series Maintenance Manual 4-45 Installing the Keyboard To install the keyboard, follow the steps below and refer to the figures in the preceding section. 1. Connect the keyboard cable to the system board. 2. Set the keyboard in place and secure it with two M2.5 × 3 silver screws . 3. Seat the[...]

4.15 TOP Cover 4 Replacement Procedures 4.15 Top Cover Removing the Top Cover To remove the top cover, first remove the battery pack, then follow the steps below. 1. Remove the keyboard , HDD and main module . 2. Remove seven M2.5 × 6 screws from the keyboard tray securing the top cover . 3. Detach the following three cables: • LED / power butto[...]

4 Replacement Procedures 4.15 TOP Cover 4. Turn the computer upside down and rem ove the following sixteen screws : • Three M2.5 × 3 silver screws • Two M2.5 × 4 black screws • Five M2.5 × 6 black screws • Six M2.5 × 14 black screws Fig 4-25: Removing the screws from the computer underside 5. Turn the computer upright, open the display [...]

4.15 TOP Cover 4 Replacement Procedures Installing the Top Cover To install the top cover, follow the steps below and refer to the figures in the preceding section. 1. Seat the top cover and secure the following three cables: • LED / power button board FPC • Function key board FPC • TouchPad FPC 2. Secure the top cover with seven M2.5 × 6 sc[...]

4 Replacement Procedures 4.16 Function Key Board 4.16 Function Key Board Removing the Function Key Board To remove the Function Key Board, first remove the battery pack, then follow the steps below. 1. Remove the keyboard , HDD , main module and top cover . 2. Place the top cover face down. 3. Remove two M2.5 × 3 silver screw s securing the functi[...]

4.16 Function Key Board 4 Replacement Procedures Installing the Function Key Board To install the Function Key Board, follow the steps below and refer to the figure in the preceding section. 1. Feed the function key board FPC through the top cover. 2. Position the function key board and secure with two M2.5 × 3 silver screws . Satellite P20-25 Ser[...]

4 Replacement Procedures 4.17 LED / Power Button Board 4.17 LED / Power Button Board Removing the LED / Power Button Board To remove the LED / Power Button Board, first remove the battery pack, then follow the steps below. 1. Remove the keyboard , HDD , main module and top cover . 2. Place the top cover face down. 3. Remove four M2.5 × 3 silver sc[...]

4.17 LED / Power Button Board 4 Replacement Procedures Installing the LED / Power Button Board To install the LED / Power Button Board, follow the steps below and refer to the figure in the preceding section. 1. Feed the LED / power button board FPC through the top cover. 2. Position the LED / power button board and secure with four M2.5 × 3 silve[...]

4 Replacement Procedures 4.18 TouchPad 4.18 TouchPad Removing the TouchPad To remove the TouchPad, first remove the battery pack, then follow the steps below. 1. Remove the keyboard , HDD , main module and top cover . 2. Place the top cover face down. 3. Disconnect the TouchPad board FPC cable from both the TouchPad button board and the TouchPad . [...]

4.18 TouchPad 4 Replacement Procedures Installing the TouchPad To install the TouchPad, follow the steps below and refer to the figure in the preceding section. 1. With the top cover upside down, place the TouchPad and TouchPad Button Board in position. Secure the TouchPad Button Board with two M2.5 × 3 silver screws . 2. Position the TouchPad cov[...]

4 Replacement Procedures 4.19 Display Assembly 4.19 Display Assembly Removing the Display Assembly To remove the display assembly, first rem ove the battery pack, then follow the steps below. 1. Turn the computer upside down and loosen tw o embedded screws securing the wireless LAN compartment cover . 2. Lift off the wireless LAN compartment cover [...]

4.19 Display Assembly 4 Replacement Procedures 6. Remove two M2 × 4 screw s from the rear of the hinges and two M2.5 × 6 screws from the I/O cover . Fig 4-30: Removing the wireless LAN compartment cover 7. Remove one m2.5 × 12 screw securing the left end of the hinge cover and one m2.5 × 3 silver screw securing the right end. 8. Lift off the hi[...]

4 Replacement Procedures 4.19 Display Assembly 9. Remove two M2.5 × 6 screw s from the hinges and release the display cable . 10. Pull on the attached handle to detach the display cable from the system board . 11. Lift the display assembly off the computer chassis. 4-56 Satellite P20-25 Series Maintenance Manual[...]

4.19 Display Assembly 4 Replacement Procedures Installing the Display Assembly To install the display assembly, follow the steps below and refer to the f igures in the preceding section. 1. Seat the display assembly taking care not to crush to the LCD display cable or wireless LAN antenna . 2. Feed the wireless LAN antenna through the system board [...]

4 Replacement Procedures 4.20 System Board 4.20 System Board Removing the System Board To remove the system board, first rem ove the battery pack, then follow the steps below. 1. Turn the computer upside down and rem ove five embedded security screws securing the CPU compartment cover . Remove the CPU compartment cover . Fig 4-32: Removing the CPU [...]

4.20 System Board 4 Replacement Procedures 3. Remove the keyboard , HDD , main module, CPU, modem or Bluetooth unit , expansion memory cards , wireless LAN cards , PC card(s), top cover and display assembly . 4. Remove nine M2.5 × 4 screws securing the low I/O cover (five from the top, two from the rear, and two from the base). 5. Remove the four [...]

4 Replacement Procedures 4.20 System Board 7. Remove the three M2.5 × 6 screws securing the system board to the com puter chassis. 8. Detach the following five cables from the system board: • Right-side speaker cable • Direct play LED FPC cable • CIR FFC cable • Direct play button FFC • Audio board FFC cable Fig 4-35: Removing the system[...]

4.20 System Board 4 Replacement Procedures Installing the System Board To install the system board, follow the steps below and refer to the figures in the preceding section. 1. Seat the system board and secure with three M2.5 × 6 screws . 2. Secure the following five cables to the system board: • Right-side speaker cable • Direct play LED FPC [...]

4 Replacement Procedures 4.21 Direct Play Button Board 4.21 Direct Play Button Board Removing the Direct Play Button Board To remove the direct play button board, first remove the battery pack, then follow the steps below. 1. Remove the keyboard , HDD , main module and top cover . 2. Release the direct play button FFC from the system board . 3. Rem[...]

4.21 Direct Play Button Board 4 Replacement Procedures Installing the Direct Play Button Board To install the direct play button board, follow the steps below and refer to the figure in the preceding section. 1. Secure the direct play button board to the bracket with two M2 × 3 screws . 2. Secure the combined unit to the direct play cover assembly[...]

4 Replacement Procedures 4.22 CIR Board 4.22 CIR Board Removing the CIR Board To remove the CIR board, first remove the battery pack, then follow the steps below. 1. Remove the keyboard , HDD , main module and top cover . 2. Release the CIR FFC and direct play button FFC from the system board . 3. Remove two M2.5 × 6 screw s securing the direct pl[...]

4.22 CIR Board 4 Replacement Procedures Installing the CIR Board To install the CIR board, follow the steps below and refer to the figure in the preceding section. 1. Seat the CIR board and secure with one M2.5 × 6 screw . 2. Seat the direct play cover assembly and secure with two M2.5 × 6 screws . 3. Attach the CIR FFC and direct play button FFC[...]

4 Replacement Procedures Direct play LED board 4.23 Direct play LED board Removing the Direct Play LED Board To remove the direct play LED board, first remove the battery pack, then follow the steps below. 1. Remove the keyboard , HDD , main module and top cover . 2. Release the direct play LED FPC from the system board . 3. Peel the direct play LE[...]

4.23 Direct play LED board 4 Replacement Procedures Installing the Direct Play LED Board To install the direct play LED board, follow the steps below and refer to the figure in the preceding section. 1. Stick the direct play LED board to the tape on the chassis. 2. Secure the direct play LED FPC to the system board . Satellite P20 Series Maintenanc[...]

4 Replacement Procedures 4.24 Audio Board 4.24 Audio Board Removing the Audio Board To remove the audio board, first remove the battery pack, then follow the steps below. 1. Remove the keyboard , HDD , main module and top cover . 2. Detach the left-side speaker cable and audio board FFC cable from the audio board . 3. Remove two M2.5 × 6 screw s s[...]

4.24 Audio Board 4 Replacement Procedures Installing the Audio Board To install the audio board, follow the steps below and refer to the figure in the preceding section. 1. Seat the audio board and secure with two M2.5 × 6 screws . 2. Attach the left-side speaker cable and audio board FFC cable . Satellite P20 Series Maintenance Manual 4-69[...]

4 Replacement Procedures 4.25 Speakers 4.25 Speakers Removing the Speakers To remove the speakers, first remove the battery pack, then follow the steps below. 1. Remove the keyboard , HDD , main module and top cover . 2. Turn the computer upside down and rem ove one M2.5 × 4 screw securing each speaker . Fig 4-40: Removing the speaker screws 4-70 [...]

4.25 Speakers 4 Replacement Procedures 3. Place the chassis upright. Detach the left-side speaker cable from the audio board and the right-side speaker cable from the system board . 4. Remove two M2.5 × 4 screw s securing each speaker . 5. Lift out each speaker . Fig 4-41: Removing the speakers Satellite P20 Series Maintenance Manual 4-71[...]

4 Replacement Procedures 4.25 Speakers Installing the Speakers To install the speakers, follow the steps below and refer to the figure in the preceding section. 1. Seat each speaker . The speaker cases are marked with L (left) and R (right). 2. Secure each speaker with two M2.5 × 4 screw s . 3. Attach the left-side speaker cable to the audio board[...]

4.26 Fan Set 4 Replacement Procedures 4.26 Fan Set Removing the Fan Set To remove the fan set, first remove the battery pack, then follow the steps below. 1. Remove the keyboard , HDD , main module, CPU, modem or Bluetooth unit , expansion memory cards , wireless LAN cards , PC card(s) , top cover and system board . 2. Remove five M2.5 × 4 screws [...]

4 Replacement Procedures 4.26 Fan Set 3. Turn the computer over and rem ove seven M2.5 × 4 screws securing the fan set from the base. Fig 4-43: Removing the outer chassis fan screws 4. Lift out the fan set . 4-74 Satellite P20 Series Maintenance Manual[...]

4.26 Fan Set 4 Replacement Procedures Satellite P20 Series Maintenance Manual 4-75 Installing the Fan Set To install the fan set, follow the steps below and refer to the figure in the preceding section. 1. Seat the fan set and secure from inside the chassis with five M2.5 × 4 screws and one M2.5 × 3 screw . 2. Turn the computer over and secure th[...]

4 Replacement Procedures 4.27 Display Mask 4.27 Display Mask Removing the Display Mask To remove the display mask, first rem ove the battery pack, then follow the steps below. 1. Remove the main module , HDD , keyboard , top cover and display assembly . 2. Remove six mask seals to expose six screws securing the display mask . 3. Remove two M2 × 3 [...]

4.27 Display Mask 4 Replacement Procedures 3. A total of 18 snaps secure the display mask . Carefully insert your fingers between the mask and the LCD panel and pry open the snaps . Start with the four snaps at the top of the display mask . Continue unsnapping the display mask along the two sides ( five snaps on each side), and the bottom edge ( fo[...]

4 Replacement Procedures 4.28 FL Inverter Board 4.28 FL Inverter Board Removing the FL Inverter Board To remove the FL inverter board, first remove the battery pack, then follow the steps below. 1. Remove the main module , HDD , keyboard , top cover , display assembly and display mask . 2. Remove one M2x3 screw securing the LCD cable . 3. Remove on[...]

4.28 FL Inverter Board 4 Replacement Procedures Installing the FL Inverter Board To install the FL inverter board, follow the steps below and refer to the figure in the preceding section.. 1. Connect the FL cable and HV cable to the FL inverter board . 2. Seat the FL inverter board and secure it with t one M2x3 screw . 3. Secure the LCD cable with [...]

4 Replacement Procedures 4.29 LCD Module 4.29 LCD Module Removing the LCD Module To remove the LCD module, first rem ove the battery pack, then follow the steps below. 1. Remove the main module , HDD , keyboard , top cover , display assembly , display mask and FL inverter board . 2. Remove six M2.5 × 6 screws securing the LCD module . 3. Lift the [...]

4.28 FL Inverter Board 4 Replacement Procedures 4. Remove eight M2 × 3 screws securing the LCD bracket (the num ber of bracket screws may vary on different models). 5. Remove the LCD bracket . 6. Peel away the Kapton film securing the LCD cable . 7. Pull out LCD cable from LCD connector . Fig 4-47: Removing the LCD cable NOTE : If the LCD module m[...]

4 Replacement Procedures 4.29 LCD Module 4-82 Satellite P20-25 Series Maintenance Manual Installing the LCD Module To install the LCD module, follow the steps below and refer to the figures in the preceding section. 1. Connect the LCD cable to the LCD connector on the back of the LCD module . 2. Secure the LCD cable with Kapton film . 3. Secure the[...]

Appendices[...]

Appendices App-ii SatelliteP20-25 Se ries Maintenance Manual[...]

Appendix Contents Appendix A Handling the LCD Module......................................................................... A-1 Appendix B Board Layout................................................................................................ B-1 B.1 System Board (FRDSY*) Bottom View ..........................................................[...]

Appendices Figures Figure B.1 System Board (FRDSY*) Bottom View ........................................................B-1 Figure B.2 System Board (FRDSY*) Top View .............................................................B-2 App-iv SatelliteP20-25 S eries Maintenance Manual[...]

Tables Table B-1 System board ICs a nd connectors (top and bottom) ............................................B-3 Table B-2 System board ICs a nd connectors (top and bottom) ............................................B-4 Table C-1 SODIMM I/F pin a ssignm ents (144-pin) .......................................................C-1 Table C-2 LCD I/F p[...]

Appendices App-vi SatelliteP20-25 Series Ma intenance Manual[...]

Appendix A Appendix A Handling the LCD Module Precautions for handling the LCD module The LCD module can be easily damaged during assem bly or disassembly. Therefore, please observe the following precautions when handling it: 1. When installing the LCD m odule in the LCD cover, be sure to seat it so that it is properly aligned and maximum visibilit[...]

3. If the panel’s surface gets dirty, wipe it with cotton or a soft cloth. If it is still dirty, try breathing on the surface to create a light condensate and wipe it again. If the surface is very dirty, we recommend a CRT cleaning agent. Apply the agent to a cloth and then wipe the panel’s surface. Do not apply cleanser directly to the panel. [...]

5. Glass is used in the panel, so be careful not to drop it or let it strike a hard object, which could cause breakage or cracks. 6. CMOS-LSI circuits are used in the module, so guard against dam age from electrostatic discharge. Be sure to wear a wrist or ankle ground when handling the module. Satellite P20-25 Series Maintenance Manual A-3[...]

7. Do not expose the module to direct sunlight or strong ultraviolet rays for long periods. 8. Do not store the module at tem peratures below specifications. Cold can cause the liquid crystals to freeze, lose their elasticity or otherwise suffer damage. 9. Do not disassemble the LCD m odule. Disassembly can cause malfunctions. A-4 Satellite P20-25 [...]

10. If you transport the module, do not use packing material that contains epoxy resin (amine) or silicon glue (alcohol or oxime). These m aterials can release gas that can damage the panel’s polarization. Satellite P20-25 Series Maintenance Manual A-5[...]

A-6 Satellite P20-25 Series Maintenance Manual[...]

Satellite P20-25 Series Maintenance Manual B-1 Appendix B Board Layout B.1 Sy stem Board (FRDSY*) Bottom View Figure B-1 System board (FRDSY*) layout (Bott om)[...]

B-2 Satellite P20-25 Series Maintenance Manual B.2 Sy stem Board (FRDSY*) T op View Figure B-2 System board (FRDSY*) layout (Top)[...]

Satellite P20-25 Series Maintenance Manual B-3 Table B-1 System board ICs and connectors (top and bottom) Mark Number Name (A) U36 MCH 865PE (B) U37 LAN Controller RTL8101L (C) U49 ICH5 Intel 82801 (D) U16 BIOS ROM 512K8-90 (E) U35 VGA Chip GO5200 (F) U29,U32, U39, U40 4M32 VRAM (G) U58 AC97 Codec ALC202 (H) U8 SUPER I/O LPC47N227 (I) U25 CIR Contr[...]

B-4 Satellite P20-25 Series Maintenance Manual Table B-2 System board ICs and connectors (top and bottom) Mark Number Name (#A) JCPU1 CPU Socket (#B) PCN1 DC-In Connector (#C) JP17, JP33 USB Connector (#D) JP30, JP16 RJ11/RJ45 Connector (#E) JP28, JP29 ODD Connector (#F) JP14 Parallel Connector (#G) JP15 CRT Connector (#H) JP20 S-Video Connector (#[...]

Satellite P20-25 Series Maintenance Manual C-1 Appendix C Appendix C Pin Assignments System Board C.1 JP24/JP26 SODIMM I/F (144-pin) Table C-1 SODIMM I/F pin assignments (144-pin) (1/4) Pin No. Signal name I/O Pin No. Signal Name I/O 1 VREF O 2 VREF O 3 VSS - 4 VSS - 5 DQ0 I/O 6 DQ4 I/O 7 DQ1 I/O 8 DQ5 I/O 9 25VDD O 10 2.5VDD O 11 DQS0 I/O 12 DM0 O[...]

C-2 Satellite P20-25 Series Maintenance Manual Table C-1 SODIMM I/F pin assignments (144-pin) (2/4) Pin No. Signal name I/O Pin No. Signal Name I/O 51 VSS - 52 VSS - 53 DQ19 I/O 54 DQ23 I/O 55 DQ24 I/O 56 DQ28 I/O 57 2.5VDD O 58 2.5VDD O 59 DQ25 I/O 60 DQ29 I/O 61 DQS3 I/O 62 DM3 O 63 VSS - 64 VSS - 65 DQ26 I/O 66 DQ30 I/O 67 DQ27 I/O 68 DQ31 I/O 6[...]

Satellite P20-25 Series Maintenance Manual C-3 Table C-1 SODIMM I/F pin assignments (144-pin) (3/4) Pin No. Signal name I/O Pin No. Signal Name I/O 115 A10/AP O 116 BA1 O 117 BA0 O 118 RAS# O 119 WE# O 120 CAS# O 121 SO# O 122 S1# - 123 DU - 124 DU - 125 VSS - 126 VSS - 127 DQ32 I/O 128 DQ36 I/O 129 DQ33 I/O 130 DQ37 I/O 131 2.5VDD O 132 2.5VDD O 1[...]

C-4 Satellite P20-25 Series Maintenance Manual Table C-1 SODIMM I/F pin assignments (144-pin) (4/4) Pin No. Signal name I/O Pin No. Signal Name I/O 181 DQ57 I/O 182 DQ61 I/O 183 DQS7 I/O 184 DM7 O 185 VSS - 186 VSS - 187 DQ58 I/O 188 DQ62 I/O 189 DQ59 I/O 190 DQ63 I/O 191 2.5VDD O 192 2.5VDD O 193 SDA I/O 194 SA0 O 195 SCL O 196 SA1 O 197 3.3VDD_SP[...]

Satellite P20-25 Series Maintenance Manual C-5 C.2 JP1 LCD I/F (40-pin) Table C-2 LCD I/F pin assignments (40-pin) Pin No. Signal name I/O Pin No. Signal Name I/O 1 PID3 I 2 PID2 I 3 PID1 I 4 PID0 I 5 GND - 6 TZCLK- O 7 TZCLK+ O 8 GND - 9 TZOUT3- O 10 TZOUT3+ O 11 TZOUT2- O 12 TZOUT2+ O 13 GND - 14 TZOUT1- O 15 TZOUT1+ O 16 TZOUT0- O 17 TZOUT0+ O 1[...]

C-6 Satellite P20-25 Series Maintenance Manual C.3 JP15 RGB I/F (15-pin) Table C-3 RGB I/F pin assignments (15-pin) Pin No. Signal name I/O Pin No. Signal Name I/O 1 CRTRED; 100 O 2 CRTGREEN; 100 O 3 CRTBLUE; 100 O 4 NC - 5 GND - 6 GND (VGAGND) - 7 GND (VGAGND) - 8 GND (VGAGND) - 9 VCC - 10 GND - 11 NC - 12 DDCSDA; 100 I/O 13 CHSYNC; 100 O 14 CVSYN[...]

Satellite P20-25 Series Maintenance Manual C-7 C.4 JP34 HDD I/F (44-pin) Table C-4 HDD I/F pin assignments (44-pin) Pin No. Signal name I/O Pin No. Signal Name I/O 1 PIDE-RST O 2 GND - 3 PDD07 I/O 4 PDD08 I/O 5 PDD06 I/O 6 PDD09 I/O 7 PDD05 I/O 8 PDD10 I/O 9 PDD04 I/O 10 PDD11 I/O 11 PDD03 I/O 12 PDD12 I/O 13 PDD02 I/O 14 PDD13 I/O 15 PDD01 I/O 16 [...]

C-8 Satellite P20-25 Series Maintenance Manual C.5 JP28 Main Module I/F (60-pin) Table C-5 CD-ROM I/F pin assignments (50-pin) Pin No. Signal name I/O Pin No. Signal Name I/O 1 INT-CD-L I 2 INTCD-R I 3 CD_AGND - 4 CD_AGND - 5 CD_RSTDRV# O 6 CDD08 I/O 7 CDD07 I/O 8 CDD09 I/O 9 CDD06 I/O 10 CDD10 I/O 11 CDD05 I/O 12 CDD11 I/O 13 CDD04 I/O 14 CDD12 I/[...]

Satellite P20-25 Series Maintenance Manual C-9 C.6 JP29 Second Module I/F (60-pin) Table C-5 CD-ROM I/F pin assignments (50-pin) Pin No. Signal name I/O Pin No. Signal Name I/O 1 NC - 2 NC - 3 NC - 4 NC - 5 SIDE_RST# O 6 IDE_SD08 I/O 7 IDE_SD07 I/O 8 IDE_SD09 I/O 9 IDE_SD06 I/O 10 IDE_SD10 I/O 11 IDE_SD05 I/O 12 IDE_SD11 I/O 13 IDE_SD04 I/O 14 IDE_[...]

C-10 Satellite P20-25 Series Maintenance Manual C.7 JP14 Parallel I/F (25-pin) Table C-6 Parallel I/F pin assignments (25-pin) Pin No. Signal name I/O Pin No. Signal Name I/O 1 STROB; 000 O 2 PDB00; 100 I/O 3 PDB01; 100 I/O 4 PDB02; 100 I/O 5 PDB03; 100 I/O 6 PDB04; 100 I/O 7 PDB05; 100 I/O 8 PDB06; 100 I/O 9 PDB07; 100 I/O 10 ACK; 000 I 11 BUSY; 1[...]

Satellite P20-25 Series Maintenance Manual C-11 C.8 JP21 PC Card I/F (150-pin) Table C-7 PC Card I/F pin assignments (154-pin) (1/3) Pin No. Signal name I/O Pin No. Signal Name I/O A1 GND - B1 GND - A2 GND - B2 GND - A3 S1 WP O B3 S2 WP O A4 S1 CD2# O B4 S2 CD2# O A5 S1 D2 I/O B5 S2 D2 I/O A6 S1 D10 I/O B6 S2 D10 I/O A7 S1 D1 I/O B7 S2 D1 I/O A8 S1[...]

C-12 Satellite P20-25 Series Maintenance Manual Table C-7 PC Card I/F pin assignments (154-pin) (2/3) Pin No. Signal name I/O Pin No. Signal Name I/O A31 S1 A24 I B31 S2 A24 I A32 S1 A15 I B32 S2 A15 I A33 GND - B33 GND - A34 S1 A23 I B34 S1 A23 I A35 S1 A16 I B35 S1 A16 I A36 S1 A22 I B36 S1 A22 I A37 +S1_VPP I B37 +S2_VPP I A38 - B38 - A39 +S1VCC[...]

Satellite P20-25 Series Maintenance Manual C-13 Table C-7 PC Card I/F pin assignments (154-pin) (3/3) Pin No. Signal name I/O Pin No. Signal Name I/O A63 S1 D14 I/O B63 S2 D14 I/O A64 S1 D7 I/O B64 S2 D7 I/O A65 S1 D13 I/O B65 S2 D13 I/O A66 S1 D6 I/O B66 S2 D6 I/O A67 GND - B67 GND - A68 S1 D12 I/O B68 S2 D12 I/O A69 S1 D5 I/O B69 S2 D5 I/O A70 S1[...]

C-14 Satellite P20-25 Series Maintenance Manual C.9 JP27 Mini PCI I/F (124-pin) Table C-8 Mini PCI I/F pin assignments (124-pin) (1/2) Pin No. Signal name I/O Pin No. Signal Name I/O 1 NC - 2 NC - 3 NC - 4 NC - 5 NC - 6 NC - 7 NC - 8 NC - 9 NC - 10 NC - 11 NC - 12 NC - 13 SWITCH O 14 NC - 15 NC - 16 NC - 17 IRQA I 18 +5VS O 19 3V O 20 IRQD I 21 NC [...]

Satellite P20-25 Series Maintenance Manual C-15 Table C-8 Mini PCI I/F pin assignments (124-pin)(1/2) Pin No. Signal name I/O Pin No. Signal Name I/O 61 IRDY I/O 62 GND - 63 P3V O 64 FRAME I/O 65 CLKRUN I/O 66 TRDY I/O 67 SERR I/O 68 STOP I/O 69 GND - 70 3VS O 71 P3V O 72 DEVSEL I/O 73 CBE1 I/O 74 GND - 75 AD14 I/O 76 AD15 I/O 77 GND - 78 AD13 I/O [...]

C-16 Satellite P20-25 Series Maintenance Manual C.10 JP22, JP23, JP25 Fan I/F (3-pin) Table C-9-1 JP22 Fan I/F pin assignments (3-pin) Pin No. Signal name I/O Pin No. Signal Name I/O 1 FAN2-1 O 2 FAN-DET_F I 3 GND - Table C-9-2 JP23 Fan I/F pin assignments (3-pin) Pin No. Signal name I/O Pin No. Signal Name I/O 1 FAN2 O 2 FAN-SPEED2 I 3 GND - Table[...]

Satellite P20-25 Series Maintenance Manual C-17 C.13 Headphone Connector (6-pin) Table C-12 Headphone Connector pin assignments (6-pin) Pin No. Signal name I/O Pin No. Signal Name I/O 1 ANGND - 2 INTSPKL O 3 INTSPKR O 4 NBA PLUG - 5 GND I 6 NC -[...]

C-18 Satellite P20-25 Series Maintenance Manual[...]

Satellite P20-25 Series Maintenance Manual D-1 Appendix D Appendix D Keyboard Scan/Character Codes Table D-1 Scan codes (set 1 and set 2) (1/4) Code set 1 Code set 2 Cap No. Keytop Make Break Make Break Note 01 ‘ ~ 29 A9 0E F0 0E 02 1 ! 02 82 16 F0 16 03 2 @ 03 83 1E F0 1E 04 3 # 04 84 26 F0 26 05 4 $ 05 85 25 F0 25 06 5 % 06 86 2E F0 2E 07 6 ^ 0[...]

D-2 Satellite P20-25 Series Maintenance Manual Table D-1 Scan codes (set 1 and set 2) (2/4) Code set 1 Code set 2 Cap No. Keytop Make Break Make Break Note 29 | 2B AB 5D F0 5D *5 30 Caps Lock 3A BA 58 F0 58 31 A 1E 9E 1C F0 1C 32 S 1F 9F 1B F0 1B 33 D 20 A0 23 F0 23 34 F 21 A1 2B F0 2B 35 G 22 A2 34 F0 34 36 H 23 A3 33 F0 33 37 J 24 A4 3B F0 3B *[...]

Satellite P20-25 Series Maintenance Manual D-3 Table D-1 Scan codes (set 1 and set 2) (3/4) Code set 1 Code set 2 Cap No. Keytop Make Break Make Break Note 58 Ctrl(L) 1D 9D 14 F0 14 *3 60 Alt (L) 38 B8 11 F0 11 *3 61 Space 39 B9 29 F0 29 62 ALT (R) E0 38 E0 B8 E0 11 E0 F0 11 64 Ctrl(R) E0 1D E0 9D E0 14 E0 F0 14 75 Ins E0 52 E0 D2 E0 70 E0 F0 70 *1[...]

D-4 Satellite P20-25 Series Maintenance Manual Table D-1 Scan codes (set 1 and set 2) (4/4) Code set 1 Code set 2 Cap No. Keytop Make Break Make Break Note 122 F11 57 D7 78 F0 78 *3 123 F12 58 D8 07 F0 07 *3 124 PrintSc *6 *6 *6 *6 *6 126 Pause *7 *7 *7 *7 *7 X Fn — — — — *4 X Win E0 5B E0 DB E0 1F E0 F0 1F x App E0 5D E0 DD E0 2F E0 F0 2F [...]

Satellite P20-25 Series Maintenance Manual D-5 Table D-2 Scan codes with left Shift key Code set 1 Code set 2 Cap No. Key top Make Break Make Break 55 / E0 AA E0 35 E0 B5 E0 2A E0 F0 12 E0 4A E0 F0 4A E0 12 75 INS E0 AA E0 52 E0 D2 E0 2A E0 F0 12 E0 70 E0 F0 70 E0 12 76 DEL E0 AA E0 53 E0 D3 E0 2A E0 F0 12 E0 71 E0 F0 71 E0 12 79 ← E0 AA E0 4B E0[...]

D-6 Satellite P20-25 Series Maintenance Manual Table D-3 Scan codes in Numlock mode Code set 1 Code set 2 Cap No. Key top Make Break Make Break 75 INS E0 2A E0 52 E0 D2 E0 AA E0 12 E0 70 E0 F0 70 E0 F0 12 76 DEL E0 2A E0 53 E0 D3 E0 AA E0 12 E0 71 E0 F0 71 E0 F0 12 79 ← E0 2A E0 4B E0 CB E0 AA E0 12 E0 6B E0 F0 6B E0 F0 12 80 Home E0 2A E0 47 E0 [...]

Satellite P20-25 Series Maintenance Manual D-7 Table D-5 Scan codes in overlay mode Code set 1 Code set 2 Cap No. Keytop Make Break Make Break 09 8 (8) 48 C8 75 F0 75 10 9 (9) 49 C9 7D F0 7D 11 0 (*) 37 B7 7C F0 7C 23 U (4) 4B CB 6B F0 6B 24 I (5) 4C CC 73 F0 73 25 O (6) 4D CD 74 F0 74 26 P (–) 4A CA 7B F0 7B 37 J (1) 4F CF 69 F0 69 38 K (2) 50 D[...]

D-8 Satellite P20-25 Series Maintenance Manual Table D-7 No.126 key scan code Code set 1 Code set 2 Key top Shift Make Make Pause Common E1 1D 45 E1 9D C5 E1 14 77 E1 F0 14 F0 77 Ctrl E0 46 E0 C6 E0 7E E0 F0 7E *: This key generates only make codes.[...]

Appendix E Appendix E Key Layout E.1 United St ates (US) Keyboard Figure E-1 US keyboard E.2 United Kingdom (UK) Keyboard Figure E-2 UK keyboard Satellite P20 Series Maintenance Manual E-1[...]

E.3 S p anish (SP) Keyboard Figure E-3 SP keyboard E.4 Jap anese (JA) Keyboard Figure E-3 JA keyboard E-2 Satellite P20 Series Maintenance Manual[...]

E.5 Korean (KO) Keyboard Figure E-3 KO keyboard Satellite P20 Series Maintenance Manual E-3[...]

E-4 Satellite P20 Series Maintenance Manual[...]

Appendix F Series Screw Torque List Table F-1 Series Screw Torque List SCREW P/N SCREW SPEC Q'ty LOCATION SCRE W TORQUE MAC925006Z0 M2.5*6 2 HING ASSY/L&R TO COVER SUB ASSY MAC925006Z0 M2.5*6 6 170" LCD BKTs TO COVER SUB ASSY MAC925006Z0 M2.5*6 4 LCD BEZEL TO COVER MAC925006Z0 M2.5*6 2 AUDIO PCB TO LL MAC925006Z0 M2.5*6 1 CIR PCB TO L[...]

SCREW P/N SCREW SPEC Q'ty LOCATION SCRE W TORQUE MACA0007204 M2.5*3 2 MDC TO MB MACA0007204 M2.5*3 2 USER KEY FPC SUPP TO LOGIC UP ( R ) MACA0007204 M2.5*3 4 PWR FPC SUPP PLATE TO LOGIC UP ( L ) MACA0007204 M2.5*3 2 TP PCB TO LOGIC UP MACA0007204 M2.5*3 5 TP BKT TO LOGIC UP MACA0007204 M2.5*3 2 MODULE LATCH TO LL (L/R SIDE) MACA0007204 M2.5*3 [...]

SCREW P/N SCREW SPEC Q'ty LOCATION SCRE W TORQUE MACK20040N0 M2*4 2 BLUETOOTH TO MB MACK20040N0 M2*4 2 UP HINGE COVER TO IO DOOR BACK SIDE MACK20040N0 M2*4 5 DVD MODULE MKE / HOUSING/PANEL MACK20040N0 M2*4 5 COMBO MODULE KME /HOUSING/PANEL MACK20040N0 M2*4 5 DVD MODULE TOSHIBA / HOUSING MACK20040N0 M2*4 5 COMBO MODULE TOSHIBA / HOUSING MMCK200[...]

F-4 Satellite P20 -25 Series Maintenance Manual[...]

Appendix G Appendix G Reliability The followin g table shows M TBF (Mean Tim e Between Fail ures) for each com ponent. Table G-1 MTBF Component Time (hours) LCD 50,000 Keyboard 40,000 HDD 300,000 Removable FDD 30,000 Optical (DVD/CD) drive 60,000 AC adapter 60,000 Satellite P20 Series Maintenance Manual G-1[...]

G-2 S atellite P20 Series Maintenance Manual[...]