Instruction/ maintenance manual of the product P25 Toshiba
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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.
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.
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.
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.
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 .........
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 ........................................................
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 ..........................................................
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.
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.
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 p.
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.
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.
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.
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 over.
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.
1.4 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 Troubleshooting Procedures Figures Figure 2-1 Troubleshooting flowchart (1/2) .................................................................... 2-3 Figure 2-1 Troubleshooting flowchart (2/2) .......................................................
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.
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 .
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 .
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 .
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.
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?.
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.
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 .
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.
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 u.
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.
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.
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.
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.
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.
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 co.
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.
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 (Proc.
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.
2.12 Optical Drive Troubleshooting 2 Troubleshooting Procedures Procedure 5 Connection check and replacement check The optical drive connects to the system board.
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 replaceme.
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.
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.
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.
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 .
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.
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 .
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.
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.
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.
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. 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.
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.
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 .
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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”.
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.
3.19 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.
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 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 .
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.
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 .
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.
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.
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.
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.
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.
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 .
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.
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 .
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 .
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.
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 .
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.
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 .
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 .
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 .
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).
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 .
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.
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.
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 .
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.
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.
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.
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.
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 .
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.
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.
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 .
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.
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 .
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.
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.
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.
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 .
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.
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.
4.19 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 .
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 .
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).
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.
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.
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 .
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 .
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 .
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.
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 .
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.
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 .
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 .
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.
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 .
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.
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 .
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.
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.
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 .
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 .
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 .
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 .
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 .
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 .
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 .
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.
Appendices Figures Figure B.1 System Board (FRDSY*) Bottom View ........................................................B-1 Figure B.2 System Board (FRDSY*) Top View .
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) .
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 .
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 P.
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.
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.
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.
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.
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 .
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.
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.
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 CLKR.
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.
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.
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.
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 5.
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 B.
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 F.
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.
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 F.
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 (*) .
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.
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.
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 MACK20.
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 Remo.
G-2 S atellite P20 Series Maintenance Manual.
An important point after buying a device Toshiba P25 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Toshiba P25 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Toshiba P25 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Toshiba P25 you will learn all the available features of the product, as well as information on its operation. The information that you get Toshiba P25 will certainly help you make a decision on the purchase.
If you already are a holder of Toshiba P25, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Toshiba P25.
However, one of the most important roles played by the user manual is to help in solving problems with Toshiba P25. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Toshiba P25 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
