Toshiba satellite a20 series manual

Toshiba Personal Computer Satellite A20 Series Maintenance Manual TOSHIBA CORPORATION File Number 960-444[...]

ii Satellite A20 Maintenance Manual (960-444) 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 A20 Maintenance Manual (960-444) iii Preface This maintenance manual describes how to perform hardware service maintenance for the Toshiba Personal Computer Satellite A20 Series, referred to as A20 Series in this manual. The procedures described in this manual are intended to help service technicians isolate faulty Field Replaceable Units[...]

iv Satellite A20 Maintenance Manual (960-444) The manual is divided into the following parts: Chapter 1 Hardware Overview describes the Satellite A20 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 ope[...]

Satellite A20 Maintenance Manual (960-444) 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 A20 Main tenance Manual (960-444)[...]

Satellite A20 Maintenance Manual (960-444) vii Table of Contents Chapter 1 Hardware Overview 1.1 Features ................................................................................................................... ... 1-1 1.2 System Unit Block Diagram ...................................................................................... 1-7[...]

viii Satellite A20 Maintenance Manual (960-444) Chapter 3 Tests and Diagnostics 3.1 The Diagnostic Test ................................................................................................... 3-1 3.2 Executing the Diagnostic Test ................................................................................... 3-3 3.3 Subtest Names ..[...]

Satellite A20 Maintenance Manual (960-444) ix 4.3 Optional PC Card ..................................................................................................... 4-11 4.4 Optional SD Card ..................................................................................................... 4-13 4.5 HDD ........................................[...]

x Satellite A20 Maintenance Manual (960-444) 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 A20 Maintenance Manual (960-444)[...]

1 Hardware Overview Chapter 1 Contents 1.1 Features................................................................................................................... ....1-1 1.2 System Unit Block Diagram .......................................................................................1-7 1.3 2.5-inch Hard Disk Drive .........................[...]

1 Hardware Overview 1-iv Satellite A20 Maintenance Manual (960-444) Figures Figure 1-1 Front of the computer .....................................................................................1-5 Figure 1-2 System unit configuration...............................................................................1-6 Figure 1-3 System unit block diag[...]

1.1 Features 1 Hardware Overview 1 Features 1.1 Features The Toshiba Satellite A20 Personal Computer us es extensive Large Scale Integration (LSI), and Complementary Metal-Oxide Sem iconductor (CMOS) technology extensively to provide compact size, minim um weight, low power usage and high reliability. The computer is built and configured to order, [...]

1 Hardware Overview 1.1 Features  CD-RW/DVD Drive A full-size, CD-RW/DVD-ROM drive modul e lets you run CD/DVDs without using an adaptor. It reads DVD-ROMs at maximum 8 speed and CD-ROMs at maximum 24 speed. It writes CD-R at up to 24 speed and CD-RW at up to 10 speed. A Mode Control button turns power to the fixe d CD-RW/DVD-ROM drive on and of[...]

1.1 Features 1 Hardware Overview  Display The following displays are available: 14.1-inch XGA TFT screen, 1,024 × 768 pixels, 16M colors • • • 15.0-inch XGA TFT screen, 1,024 × 768 pixels, 16M colors 15.0-inch SXGA+ TFT screen, 1,400 × 1,050 pixels, 16M colors A video controller contained on the nor th bridge and 4MB, 8MB, 16MB or 32MB [...]

1 Hardware Overview 1.1 Features  W ireless LAN (mini PCI Card slot) In some models, a Mini PCI Card with wireless LAN functions is available as a dealer-installed option. The mini PCI Card for wireless LAN is co mpatible with other LAN systems based on Direct Sequence Spread Spectrum radio technology that complies with the IEEE 802.11b or a/b. [...]

1.1 Features 1 Hardware Overview  Internal m odem The internal modem is equipped as a modem daughter card (MDC). The internal modem provides capability fo r data and fax communication and supports ITU-TV.90. In the U.S. and Canada, V.92 is supported. For data reception it operates at 56,000bps and for data transmission it operates at 33,600bps. [...]

1 Hardware Overview 1.1 Features System Board PJ5620 TV PJ4600 CRT PJ5601 LCD 1 PJ9511 PJ2130 PJ6004 PJ6000 PJ9600 External Microphone Sound Board PAD PJ3240 Switch Board PJ3230 SD Card PJ9510 PJ9601 FIR Board PJ3010 PJ9500 PJ9610 Headphone PJ8800 PJ8810 PJ9999 PJ9900 PJ5600 LCD 0 Memory 2 PJ1401 PJ3260 PJ1400 PJ2010 PJ6001 Line IN MDC Network HDD [...]

1.2 System Unit Block Diagram 1 Hardware Overview 1.2 System Unit Block Diagram Figure 1-3 is the block diagram of the system unit. Clock Gen. ICS ICS951104 CPUCLK MEMCLK AGPCLK PCICLK 48MCLK 14MCLK P3V P3V V oltage Regulator Thermal Sensor Analog Devices ADM1032 CPU Intel Pentium 4 DT Northwood 2.53/2.66/2.8/3.06GHz VID1.2V PPV 533MHz North Br idg[...]

1 Hardware Overview 1.2 System Unit Block Diagram The system unit is composed of the following m ajor components:  Processor Intel Desktop Pentium 4 Processor 2.53GHz – Processor core sp eed: 2.53GHz at 1.525V – Processor bus speed: 533MHz – Integrated L1 cache memory: 12KB instruction cache and 8 KB write-back data cache, 4-way set associ[...]

1.2 System Unit Block Diagram 1 Hardware Overview  PCI Chip Set North Bridge ALi M1672 Northbridge with Integrated Graphic Chip ALi PCI Northbridge Core Logic Processor Support – Supports Intel Pentium 4 microproce ssor fam ily with host bus frequency can be up to 400MHz – 64-bit data bus and 32-bit addressing bus – Optimum buffering archi[...]

1 Hardware Overview 1.2 System Unit Block Diagram PCI Bus Support – Supports synchronous / asynchronous cl ock mode between the processor bus and the PCI bus – 32-bit Address / Data PCI bus using PCI bus driver technology – Supports up to 5 PCI masters exclud ing the M1672 and PCI-to-ISA bridge – Parity protection on all PCI bus signals –[...]

1.2 System Unit Block Diagram 1 Hardware Overview South Bridge ALi M1535+ Southbridge – Provides a high integration bridge between the PCI Bus and Peripheral Bus (PCI spec. 2.2 Compliant) – Provides Steerable PCI Interrupt s for PCI Device Plug-and-Play – Enhanced DMA Controller – Interrupt Controller – Counter/Timers – Distributed DMA [...]

1 Hardware Overview 1.2 System Unit Block Diagram  KBC/EC (Keyboard Controller/Embedded Controller) • One M306K9FCLRP chip functions as both KBC and EC. • KBC has the following functions: – Scan controller to check status of keyboard matrix – Interface controller between the keyboa rd scan controller and the system • EC has the followi[...]

1.2 System Unit Block Diagram 1 Hardware Overview  Clock Generator • One ICS951104 is used. This device generates the system clock. Satellite A20 Ma intenance Manual (96 0-444) 1-13[...]

1 Hardware Overview 1.3 2.5-inch Hard Disk Drive 1.3 2.5-inch Hard Disk Drive The removable HDD is a random-access, non-volati le storage device. It has a non-removable 2.5-inch magnetic disk and mini-W inchester type magnetic heads. The computer supports a 30GB, 40GB, 60GB or 80GB HDD. The HDD is shown in figure 1-4. The speci fications are listed[...]

1.3 2.5-inch Hard Disk Drive 1 Hardware Overview Table 1-1 2.5-inch HDD specifications (2/3) Specifications Parameter HITA CHI G8BC0000F310 HITA CHI G8BC0000F410 G8BC0000Z410 HITA CHI G8BC00009110 HITA CHI G8BC0000F610 Storage size (formatted) 30 40 60 Speed (RPM) 4.200 5.400 4.200 Data transfer speed (Mbits/s) 22.1 – 42.8 19.4 – 37.1 27.8 – [...]

1 Hardware Overview 1.4 CD-RW/DVD Drive 1.4 CD-RW/DVD Drive A full-size, CD-RW/DVD-ROM drive module lets you run CD/DVDs without using an adaptor. It reads DVD-ROMs at maximum 8 sp eed and CD-ROMs at maximum 24 speed. It writes CD-R at up to 24 speed and CD-RW at up to 10 speed. A Mode Control button turns power to the fixed CD-RW/DVD- ROM drive on[...]

1.4 CD-RW/DVD Drive 1 Hardware Overview Table 1-2 CD-RW/DVD drive specifications (1/4) Specifications Item TEAC G8CC0000Q410 Read (CD-ROM) 1,545 to 3,600 KB/sec. Read (DVD-ROM) 4,469 to 10,816 KB/sec. Write (CD-R) - Transfer rate Write (CD-RW) - CD-ROM 90 Average access time (msec.) DVD-ROM 110 Data Buffer Capacity 2MB Supported Formats CD: CD-DA, [...]

1 Hardware Overview 1.4 CD-RW/DVD Drive Table 1-2 CD-RW/DVD drive specifications (3/4) TEAC G8CC0001D410 Item DVD-ROM (Play mode) CD-ROM (Play mode) CD-R/CD-RW (Record mode) ATAPI Burst (Mbytes/s) 33.3 (Ultra DMA mode 2) 16.7 (PIO Mode 4, Multi word DMA mode 2) Access time (ms) Average 1/3 Stroke Access 180 130 - Data Buffer Capacity (Mbytes) 2 Sup[...]

1.5 DVD-R/-RW Drive 1 Hardware Overview 1.5 DVD-R/-RW Drive A full-size DVD-R/-RW drive module lets you reco rd data to rewritable CD/DVDs as well as run either 12 cm (4.72") or 8 cm (3.15") CD/DVDs without using an adaptor. It reads DVD-ROMs at maximum 8 speed and CD-ROMs at maximum 24 speed. It writes CD-R at up to 16 speed, CD-RW at up[...]

1 Hardware Overview 1.6 DVD Multi Drive 1.6 DVD Multi Drive A full-size, DVD Multi drive module lets you ru n either 12 cm (4.72") or 8 cm (3.15") CD/DVDs without using an adaptor. It reads DVD-ROMs at maximum 8 speed and CD- ROMs at maximum 24 speed. It writes CD-R at up to 16 speed, CD-RW at up to 8 speed, DVD-R and DVD-RW at single spe[...]

1.6 DVD Multi Drive 1 Hardware Overview Table 1-4 DVD-Multi drive specifica tions (2/2) Panasonic G8CC00012410 Item DVD-ROM mode CD-ROM mode CD-R/CD-RW (Write) ATAPI Burst (Mbytes/s) 33.3 (Ultra DMA mode 2) 16.6 (PIO Mode 4, Multi-word DMA mode 2) Access time (ms) 1/3 Stroke Access (ty p.) 180 130 - Data Buffer Capacity (Mbytes) 2 Supported Formats[...]

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1.7 Keyboard 1 Hardware Overview 1.7 Keyboard The keyboard is mounted 85(US)/86(UK) keys th at consist of character key and control key, and in conformity with JIS. The keyboard is connected to membrane connector on the system board and controlled by the keyboard controller. Figure1-8 is a view of the keyboard. See Appendix E about a layout of the [...]

1 Hardware Overview 1.8 TFT Color Display 1.8 TFT Color Display The TFT color display consists of 14 .1/15.0-inch XGA/SXGA+ LCD module and FL inverter board. 1.8.1 LCD Module The LCD module used for the TFT color display uses a backlight as th e light source and can display a maximum of 262,144 colors with 1,024 x 768 or 1,400 x 1,050 resolution. T[...]

1.8 TFT Color Display 1 Hardware Overview Table 1-5 LCD module specificati ons (14.1-inch XGA TFT) (1/3) Specifications Item G33C0000 L110 G33C0000 G110 G33C0000 M110 G33C0000 Q110 VF2058 P01 VF2062 P01 Number of Dots 1,024 (W) x 768 (H) Dot spacing (mm) 0.297 (H) x 0.297 (V) Display range (mm) 304.128 (H) x 228.096 (V) Table 1-5 LCD module specifi[...]

1 Hardware Overview 1.9 Power Supply 1.9 Power Supply The power supply distributes many different volta ges to the system board and performs the following functions: 1. Input port management • AC adaptor connection • Battery pack installation • The voltage of AC adaptor (both IN and OUT) 2. Power supply internal control • Battery pack charg[...]

1.9 Power Supply 1 Hardware Overview The power supply output rating is specified in table 1-7. Table 1-7 Power supply board output rating Power supplied Yes/No Use Name Voltage (V) Stand by Power off No battery CPU,M1672 PPV 1.55-1.25 NO NO NO CPU VID1R2- P1V 1.2 NO NO NO M1672,Memory 2R5-B2V 2.5 YES NO NO M1535+,Clock Generator 2R5-P2V 2.5 NO NO N[...]

1 Hardware Overview 1.10 Batteries 1.10 Batteries The computer has two types of batteries:  Main battery pack  RTC battery The battery specifications are listed in table 1-8. Table 1-8 Battery specifications Battery name Material Output voltage Capacity Main battery Lithium-Ion 10.8 V 8,400 mAh RTC battery NiMH 3.0 V 17mAh 1.10.1 Main Battery[...]

1.10 Batteries 1 Hardware Overview 1.10.3 Batter y Charging Control Battery charging is controlled by a power s upply microprocessor mounted on the system board. The power supply microprocessor controls wh ether the charge is on or off and detects a full charge when the AC adaptor and battery are attached to the com puter. The system charges the ba[...]

1 Hardware Overview 1.10 Batteries 1-30 Satellite A20 Ma intenance Manual (960-444) 1.10.4 RTC battery The RTC battery provides power to keep the cu rrent date, time and other setup information in memory while the computer is turned of f. Table 1-10 lists the charging time and data preservation period of the RTC battery. The adap ter or main batter[...]

Chapter 2 Troubleshooting Procedures[...]

2 Troubleshooting Procedures 2-ii Satellite A20 Maintenance Manual (960-444)[...]

2 Troubleshooting Procedures Chapter 2 Contents 2.1 Troubleshooting ......................................................................................................... 2-1 2.2 Troubleshooting Flowchart ........................................................................................ 2-3 2.3 Power Supply Troubleshooting ................[...]

2 Troubleshooting Procedures 2.8 Display Troubleshooting .......................................................................................... 2-44 Procedure 1 External Monitor Check............................................................. 2-44 Procedure 2 Diagnostic Test Program Execution Check ............................... 2-44 Procedu[...]

2 Troubleshooting Procedures Figures Figure 2-1 Troubleshooting flowchart ................................................................................. 2-4 Figure 2-2 Printer port LED............................................................................................... 2-2 2 Figure 2-3 Antenna test jig .................................[...]

2 Troubleshooting Procedures 2-vi Satellite A20 Main tenance Manual (960-444)[...]

2.1 Troubleshooting 2 Troubleshooting Procedures 2 2.1 Troubleshooting Chapter 2 describes how to dete rmine if a Field R eplaceable Un it (FRU) in the computer is causing the computer to malfunc tion. The FRUs covered are: 1. System Board 5. Display 9. Wireless LAN 2. Floppy Disk Drive 6. CD/DVD/Multi Drive 10. Sound components 3. Hard Disk Drive [...]

2 Troubleshooting Procedures 2.1 Troubleshooting 20. CD-RW media that supports four-speed writi ng and is formatted with DirectCD (m edia manufactured by RICOH or Mitsubi shi Chem ical are recommended). 21. RJ11 connector checker and modular cable or RJ11 connector checker LED 22. LAN wraparound connector 23. Music CD 24. DVD that isn’t a test me[...]

2.2 Troubleshooting Flowchart 2 Troubleshooting Procedures 2.2 Troubleshooting Flowchart Use the flowchart in Figure 2-1 as a guide for determ ining which trouble shooting procedures to execute. Before going through the flowchart steps, verify the following:  Ask the user if a password is registered and, if it is, ask him or her to enter the pas[...]

2 Troubleshooting Procedures 2.2 Troubleshooting Flowchart Figure 2-1 Troubleshooting flowchart (1/2) 2-4 Satellite A20 Ma intenance Manual (96 0-444)[...]

2.2 Troubleshooting Flowchart 2 Troubleshooting Procedures Figure 2-1 Troubleshooting flowchart (2/2) Satellite A20 Main tenance Manual (96 0-444) 2 -5[...]

2 Troubleshooting Procedures 2.2 Troubleshooting Flowchart If the diagnostics program cannot detect an erro r, the prob lem may be intermittent. Th e Running Test program should be executed several times to isolate the problem . Check the Log Utilities function to confirm which diagnos tic test detected an error, then perform the appropriate troubl[...]

2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting The power supply controls many functions and com ponents. To determine if the power supply is functioning properly, start with Proc edure 1 and continue with the ot her Procedures as instructed. The procedures described in this section are: Procedure 1: P[...]

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting Table 2-2 DC IN LED DC IN LED Power supply status Lights green DC power is being supplie d from the AC adaptor. Blinks orange Power supply malfunction *3 Doesn’t light Any condition other than those above *3 When the power supply controller det ects a malfunction, the DC IN LED blinks [...]

2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures Procedure 2 Error Code Check If the power supply microprocessor detects a ma lfunction, the DC IN LED blinks orange. The blink pattern indicates an error as shown below.  Start Off for 2 seconds  Error code (8 bit) “1” On for one second “0” On for a half second Interval bet[...]

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting Check 1 Convert the DC IN LED blink patte rn into the hexadecimal error code and compare it to the tables below. The error code begins with the least significan t digit. Error code Error code Where Error occurs 1*h DC-IN (AC Adaptor, DS) AC Adaptor is not connected. Error code begins wit[...]

2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures  DC IN Error code Meaning 10h AC Adaptor output voltage is over 16.5V. 11h Comm on Dock output voltage is over 16.5V. 12h Current from the DC p ower supply is over 13.2A. 13h Current from the DC p ower supply is over 0.5A when there is no load. 14h Current sen sing IC is not normal. ?[...]

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting  E5V output Error code Meaning 50h E5V voltage is over 6.00V when the computer is powered on/off. 51h E5V voltage is 4.50V or less when the computer is po wered on. 52h E5V voltage is 4.50V or less when the computer is booting up. 53h E5V voltage is abnormal when the computer is suspe[...]

2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures  EMV output Error code Meaning 80h EMV voltage is over 3.00V when the computer is powered on/off. 81h EMV voltage is 1.53V or less whe n the computer is powered on. 82h EMV voltage is 1.53V or less whe n the computer is booting up. 83h EMV voltage is 1.53V or more when the computer is[...]

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting  PPV output Error code Meaning B0h PPV voltage i s over 1.92V when the computer is powered on or off. B1h PPV voltage i s 1.04V or less wh en the computer is powered on. B2h PPV voltage i s 1.04V or less wh en the computer is booting up. B3h PPV voltage i s 1.04V or more w hen the com[...]

2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures Check 2 In the case of error code 10h or 12h:  Make sure the AC adaptor cord and AC power cord are firmly plugged into the DC IN 15 V socket and wall outlet. If the cables are connected correctly, go to the following step:  Connect a new AC adaptor and/or AC power cord, if necessar[...]

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting Procedure 3 Connection Check The power supply wiring diagram is shown below: Battery pa ck A C ad ap te r Sys tem boa rd AC power cord A C adap ter c or d Any of the connectors may be di sconnected. Perform Check 1. Check 1 Disconnect the AC power cord from wall outlet. Check the power c[...]

2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures Procedure 4 Quick Charge 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, go to System [...]

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting Procedure 5 Replacement Check The system board or the battery board may be disconnected or damaged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures . Check the connection between the AC adaptor and the syst em board and connection between the s[...]

2.12 Sound Troubleshooting 2 Troubleshooting Procedures 2.4 System Board Troubleshooting This section describes how to determ ine if th e system board is defective or not functioning properly. Start with Procedure 1 and continue wi th the other procedures as instructed. The procedures described in this section are: Procedure 1: Message Check Proced[...]

2 Troubleshooting Procedures 2.12 Sound Troubleshooting Procedure 1 Message Check When the power is turned on, the system performs the Initial Reliability Te st (IRT) installed in the BIOS ROM. The IRT tests each IC on the system board and initia lizes it.  If an error message is shown on the display, perform Check 1.  If there is no error me[...]

2.12 Sound Troubleshooting 2 Troubleshooting Procedures Check 2 The IRT checks the system board. When th e IRT detects an error, the system stops or an error message appears. If one of the following error messages (1) th rough (17), (24) or (25) appears, go to Procedure 4. If the error message (18) appears, go to the Keyboard Troubles hooting Proce[...]

2 Troubleshooting Procedures 2.12 Sound Troubleshooting Procedure 2 Printer Port LED Check on Boot Mode The printer port LED displays the IRT status and test status by turning lights on and off as an eight-digit binary value for boot mode. Figure 2-2 shows the printer port LED. Figure 2-2 Printer port LED To use the printer port LED, follow the ste[...]

2.12 Sound Troubleshooting 2 Troubleshooting Procedures Table 2-3 Printer port LE D boot mode status (1/8) LED Status Test item Message Register initialization for boot block Clearing software reset bit Permitting A20 line FFh Start Initialization of special regist er and Intel chip set PIT CH0 initialization (for HOLD ON) BIOS rewrite flag initial[...]

2 Troubleshooting Procedures 2.12 Sound Troubleshooting Table 2-3 Printer port LE D boot mode status (2/8) LED Status Test item Message DRAM configuration Enable L1 cache Memory clear (B3h) Transition to real mode, coping BIOS on RAM Storing key scan code Setting TASK_1ms_TSC B5h Display initialization Display initialization FAN control Sound contr[...]

2.12 Sound Troubleshooting 2 Troubleshooting Procedures Table 2-3 Printer port LE D boot mode status (3/8) LED Status Test item Message Initialization of special regist er 00h IRT Check system PIT CH1 initialization siz e (Setting refresh interval to 30 m/s) Check of the type and size of DRAM (at Cold Boot) The system halts when the DRAM size is ze[...]

2 Troubleshooting Procedures 2.12 Sound Troubleshooting Table 2-3 Printer port LE D boot mode status (4/8) LED Status Test item Message Setting resume error request (03h) System BIOS ROM to RAM copy (The system halts when an error is detected.) SMRAM initialization Check of Wake Up factor SMRAM base rewrite and BIOS CPU state map store 04h SMRAM in[...]

2.12 Sound Troubleshooting 2 Troubleshooting Procedures Table 2-3 Printer port LE D boot mode status (5/8) LED Status Test item Message Storing memory configuration In buffer Reading EC version Update of flash ROM type Destination (home/abroad) reference by DMI data Default setting when CMOS default setting error (Bad Battery, Bad Checksum (ROM, CM[...]

2 Troubleshooting Procedures 2.12 Sound Troubleshooting Table 2-3 Printer port LE D boot mode status (6/8) LED Status Test item Message Running a task for waiting the completion of PnP resource creating Serial interrupt control (b efore executing interrupt) PnP Hardware initialization PC card slot initialization FIR initialization PCI auto configur[...]

2.12 Sound Troubleshooting 2 Troubleshooting Procedures Table 2-3 Printer port LE D boot mode status (7/8) LED Status Test item Message 13h System memory initialization * LED=14h when an error is detected in check of exceptional cases in protected mode Initialization of conventional m emory (Reboot) 15h DMA Page Register check DMA Page Register che[...]

2 Troubleshooting Procedures 2.12 Sound Troubleshooting Table 2-3 Printer port LE D boot mode status (8/8) LED Status Test item Message Waiting for the completion of the clock generator setting (The system halts in LED=1Dh when an error is detected.) Waiting for the completion of Serial Port initialization Releasing NMI mask TIT checksum Clearing r[...]

2.12 Sound Troubleshooting 2 Troubleshooting Procedures Check 1 If any of the following erro r codes display, go to Procedure 4. B0h, B1h, B2h, B3h, B7h, B8h, 00h, 01h, 02h, 03h, 04h, 06h, 07h, 05h, D0h, D1h, D2h, D3h, D4h, D5h, 70h, 74h, 75h, 71h, 72h, 73h, 76h, 77h, 81h, 82h, 83h, 78h, 79h, 08h, 09h, 0Ah, 0Dh, 18h, 19h, 1Fh, 20h, 25h, 30h, 40h, 4[...]

2 Troubleshooting Procedures 2.12 Sound Troubleshooting 2-32 Satellite A20 Ma intenance Manual (960-444) 16. IEEE1394 test 17. Bluetooth test If an error is detected during these tests, go to Procedure 4. Procedure 4 Replacement Check The system board connectors may be dam aged. Disassemble the computer following the steps described in Chapter 4, R[...]

2.5 FDD Troubleshooting 2 Troubleshooting Procedures 2 2.5 FDD Troubleshooting This section describes how to determ ine if th e USB FDD is functioning properly. Perform the steps below starting with Procedure 1 and con tinuing with the other pr ocedures as required. Procedure 1: FDD Head Cleaning Check Procedure 2: Diagnostic Te st Program Executio[...]

2 Troubleshooting Procedures 2.5 FDD Troubleshooting Procedure 2 Diagnostic Test Program Execution Check Insert the Diagnostics Disk in the USB FDD, tu rn on the computer and run the test. Refer to Chapter 3, Tests and Diagnostics, for more inform ation about th e diagnostics test procedures. Floppy disk drive test error codes and their status name[...]

2.5 FDD Troubleshooting 2 Troubleshooting Procedures Procedure 3 Connector Check and Replacement Check The 3.5-inch USB FDD is connected to the system board. Check 1 Make sure the USB FDD cable is fi rmly connected to PJ4600 on system board. USB cable System board PJ4600 USB FDD If any of the connections is l oose, reconnect firmly and repe at Proc[...]

2 Troubleshooting Procedur es 2.6 HDD Troubleshooting 2.6 HDD Troubleshooting This section describes how to determine if th e HDD is functioning properly. Perform the steps below starting with Procedure 1 and continui ng with the other proc edures as required. Procedure 1: Message Check Procedure 2: Partition Check Procedure 3: Format Check Procedu[...]

2.6 HDD Troubleshooting 2 Troubleshooting Procedures Procedure 2 Partition Check Insert the Toshiba MS-DOS system disk and restar t the computer. Perform the following checks: Check 1 Type C: and press Enter . If you cannot change to the drive C, go to Check 2. If you can change to drive C, go to Check 3. Check 2 Type FDISK and press Enter . Choose[...]

2 Troubleshooting Procedur es 2.6 HDD Troubleshooting Procedure 3 Format Check The computer’s HDD is formatted using the MS -DOS FORMAT program. To format the HDD, follow the steps below. Check 1 Format the HDD and transfer system files using FORMAT C:/S/U . If the following message appears on the display, the HDD is formatted. Format complete If[...]

2.6 HDD Troubleshooting 2 Troubleshooting Procedures Procedure 4 Diagnostic Test Program Execution Check The HDD test program is stored in the diagnostics disk. Perform all of the HDD tests in the Hard Disk Drive Test. Refer to Chapter 3, Tests and Diagnostics, for m ore information about the HDD test program. If an error is detected during th e HD[...]

2 Troubleshooting Procedur es 2.6 HDD Troubleshooting Procedure 5 Connector Check and Replacement Check The HDD or the system board may be disconnect ed or damaged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and perform the following checks: Check 1 Make sure the HDD is firmly connected to PJ1800 on [...]

2.7 Keyboard Troubleshooting 2 Troubleshooting Procedures 2.7 Keyboard Troubleshooting To determine if the computer’s keyboard or touch pad is functioning properly, perform the following procedures. Start with Procedure 1 and continue with the other procedures as instructed. Procedure 1: Diagnostic Te st Program Execution Check Procedure 2: Conne[...]

2 Troubleshooting Procedures 2.7 Keyboard Troubleshooting Procedure 2 Connector and Replacement Check The keyboard, touch pad or system board may be disconnected or dam aged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and perform the following checks. If the touch pad malfuncti ons, start with Check [...]

2.8 Display Troubleshooting 2 Troubleshooting Procedures 2.8 Display Troubleshooting This section describes how to determ ine if the co mputer’s display is functioning properly. Start with Procedure 1 and continue with th e other procedures as instructed. Procedure 1: External Monitor Check Procedure 2: Diagnostic Te st Program Execution Check Pr[...]

2 Troubleshooting Procedures 2.8 Display Troubleshooting Procedure 3 Connector and Replacement Check The FL, FL inverter, LCD module, and system boar d are connected to the display circuits. Any of these components may be damaged. Refer to Chapter 4, Replacement P rocedures, for instructions on how to disasse mble the computer and then perform the [...]

2.9 DVD-ROM and CD-RW/DVD-ROM Troubleshoo ting 2 Troubleshooting Procedures 2.9 CD-RW/DVD, DVD-ROM, DVD- R/-RW, and DVD Multi Drive Troubleshooting This section describes how to determ ine if th e computer’s internal CD-RW/DVD, DVD-ROM, DVD-R/-RW drive, or DVD Multi driv e is functioning properly. Perf orm the steps below starting with Procedure [...]

2 Troubleshooting Procedures 2.9 DVD-ROM and CD-RW/DVD-ROM Troubleshooting Procedure 3 Connector Check and Replacement Check The CD-RW/DVD, DVD-ROM, DVD-R/-RW or DVD Multi driv e connects to PJ1820 on the system board. The drive may be disconnected, or the drive or system board may be damaged. Disassemble the computer following the steps described [...]

2.10 Modem Troubleshooting 2 Troubleshooting Procedures 2.10 Modem Troubleshooting This section describes how to determ ine if th e computer's m odem is functioning properly. Perform the steps below starting with Procedure 1 and continuing with the other proced ures as required. Procedure 1: Diagnostic Te st Program Execution Check Procedure 2[...]

2 Troubleshooting Procedures 2.10 Modem Troubleshooting Procedure 2 Connector Check and Replacement Check The Modem is installed as a modem daughter card (MDC). If the modem m alfunctions, there may be a bad connection between the MDC a nd the sound board, or the sound board and the system board. Or the MDC, the sound board, the system board or the[...]

2.11 LAN Troubleshooting 2 Troubleshooting Procedures 2.11 LAN Troubleshooting This section describes how to determ ine if th e computer's LAN port is functioning properly. Perform the steps below starting with Procedure 1 and continuing with the other proced ure as required. Procedure 1: Diagnostic Te st Program Execution Check Procedure 2: C[...]

2 Troubleshooting Procedures 2.11 LAN Troubleshooting Procedure 2 Connector Check and Replacement Check If the LAN port malfunctions, there may be a bad connection between th e RJ-45 jack and the system board. Or the system board m ay be damaged. Disassemble the computer following the steps described in C hapter 4, Replacement Procedures and perfor[...]

2.11 LAN Troubleshooting 2 Troubleshooting Procedures 2.12 Wireless LAN Troubleshooting This section describes how to determine if the computer’s wireless LAN is functioning properly. Perform the steps below starting with Procedure 1 and continuing with other procedures as required. Procedure 1: Transmitting-Receiv ing Check Procedure 2: Antennas[...]

2 Troubleshooting Procedures 2.11 LAN Troubleshooting Procedure 2 Antennas' Connection Check The wireless LAN function wiri ng diagram is shown below: Antenna cable Left antenna FIR board Right antenna Wireless LAN Card (Mini PCI) System board PJ2200 PJ9500 Any of the connections may be disconnected. Disassemble the com puter following the ste[...]

2.11 LAN Troubleshooting 2 Troubleshooting Procedures Procedure 3 Antenna Check Use an antenna test cable to check the an tennas' connection. Follow the steps below. Any of the connections may be disconnected. Disassemble the com puter following the steps described in Chapter 4, perform the following checks. 1. Disassemble the computer and dis[...]

2 Troubleshooting Procedures 2.11 LAN Troubleshooting Procedure 4 Replacem ent Check Check if the wireless LAN card and the system board are connected properly. Any of these components may be damaged. Disassemble the computer following the steps described in Chapter 4 and replace the board with a new one. Check 1 The wireless LAN board may be defe [...]

2.12 Sound Troubleshooting 2 Troubleshooting Procedures 2.13 Sound Troubleshooting This section describes how to determine if the computer's sound functions are functioning properly. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required. Procedure 1: Diagnostic Te st Program Execution Check Proc[...]

2 Troubleshooting Procedures 2.12 Sound Troubleshooting Procedure 2 Connector Check The sound function wiring diagram is shown below: Sound board PJ6000 P J9600 PJ9601 MDC Line In PJ3010 External microphone Headphone PJ6004 P J6001 System board PJ9511 PJ9512 PJ9513 PJ9510 Speaker (Right) Speaker (Left) SD card PJ2130 Any of the connections may be d[...]

2.12 Sound Troubleshooting 2 Troubleshooting Procedures Procedure 3 Replacement Check Check 1 If the speakers don't sound properly, the le ft or right speaker may be defective or damaged. Replace it with a new one. If the st ereo speakers still do not wo rk properly, go to Check 3. Check 2 If the external microphone or the hea dphone does not [...]

2 Troubleshooting Procedures 2.12 Sound Troubleshooting 2-58 Satellite A20 Ma intenance Manual (960-444) 2.14 SD Card Slot Troubleshooting This section describes how to determine if the computer’s SD card slot is functioning properly. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required. Procedure[...]

Chapter 3 Tests and Diagnostics[...]

3 Tests and Diagnostics 3-ii Satellite A20 Maintenance Manual (960-444)[...]

3 Tests and Diagnostics Chapter 3 Contents 3.1 The Diagnostic Test ................................................................................................... 3-1 3.2 Executing the Diagnostic Test ................................................................................... 3-3 3.3 Subtest Names .......................................[...]

3 Tests and Diagnostics 3-iv Satellite A20 Main tenance Manual (960-444) 3.24.1 Function Description .......................................................................... 3-61 3.24.2 Operations .......................................................................................... 3-62 3.25 System Configuration .............................[...]

3.1 The Diagnostic Test 3 Tests and Diagnostics 3 3.1 The Diagnostic Test This chapter explains how to use the Diagnostic Test program to test the functions of the computer’s hardware modules. The Diagnostic Test Program is stored on the Diagnostic Disk. The Diagnostic Test program consists of eight programs that are grouped into the Service Prog[...]

3 Tests and Diagnostics 3.1 The Diagnostic Test You will need the following equipment to perform som e of the Diagnostic test programs.  The Diagnostics Disk (all tests)  A formatted working disk for the floppy disk drive test  An external FDD attachment  A cleaning kit to clean the floppy disk drive heads (Head Cleaning)  A cleaning[...]

3.2 Executing the Diagnostic Test 3 Tests and Diagnostics 3.2 Executing the Diagnostic Test Toshiba MS-DOS is required to run the DIAGNOSTICS TEST PROGRAM. To start the DIAGNOSTIC TEST PROGRAM, follow these steps: 1. Insert the Diagnostics disk in the floppy disk drive and turn on the computer while pressing U . (The Diagnostics Disk contains the M[...]

3 Tests and Diagnostics 3.2 Executing the Diagnostic Test 2. To execute the DIAGNOSTIC TEST MENU from the DIAGNOSTICS MENU, set the highlight bar to 1 , and press Enter . The following DIAGNOSTIC TEST MENU will appear: TOSHIBA Personal Computer XXXX DIAGNOSTICS Version XXX (c) Copyright TOSHIBA Corp. XXXX DIAGNOSTIC TEST MENU : 1 - SYSTEM TEST 2 - [...]

3.2 Executing the Diagnostic Test 3 Tests and Diagnostics 3. Select the option you want to execute and press Enter . When “1-SYSTEM TEST” is selected, the following message will appear: SYSTEM TEST XXXXXXX XXXX DIAGNOSTIC TEST VX.XX [Ctrl]+[Break] : test end [Ctrl]+[C] : key stop SUB-TEST : XX PASS COUNT: XXXXX ERROR COUNT: XXXXX WRITE DATA: XX[...]

3 Tests and Diagnostics 3.2 Executing the Diagnostic Test 5. The following message will appear: ERROR STOP : YES/NO Then, use the left or right arrow keys to move the cursor to the desired option and press Enter . Selecting YES stops the test program when an error is found and displays the operation guide on the right side of the display screen as [...]

3.3 Subtest Names 3 Tests and Diagnostics 3.3 Subtest Names Table 3-1 lists the subtest names for each test program in the DIAGNOSTIC TEST MENU. Table 3-1 Subtest names (1/2) No. Test Name Subtest No. Subtest Name 1 SYSTEM 01 02 04 05 06 07 08 09 ROM checksum Thermister Check CPU Fan ON/OFF 2nd Fan ON/OFF Quick charge DMI read DMI write CPU Tempera[...]

3 Tests and Diagnostics 3.3 Subtest Names Table 3-1 Subtest names (2/2) No. Test Name Subtest No. Subtest Name 7 ASYNC 06 07 FIR/SIR Point to point (send) FIR/SIR Point to point (receive) 8 HARD DISK 01 02 03 04 06 07 09 10 Sequential read Address uniqueness Random address/data Cross talk & peak shift Write specified address Read specified addr[...]

3.4 System Test 3 Tests and Diagnostics 3.4 System Test To execute the System Test select 1 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions on the screen. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 ROM Checksum This subtest executes a checksum test of the BIOS ROM on the System Board. [...]

3 Tests and Diagnostics 3.4 System Test Subtest 07 DMI read Reads the factory setting for the serial and DMI numbers. Model Name : XXXXXX Version Number : XXXXXX-XXXXX Serial Number : XXXXXXXXXX Model Number : XXXXXX-XXXXX PCN/BND Number : XXXXXXXXXXXXXXXXXXXX UUID Number : XXXXXXXXXXXXXXXXXXXXXXXXX To exit this subtest and return to the SYSTEM TES[...]

3.4 System Test 3 Tests and Diagnostics When the subtest starts, the following message appears on the display: CPU TEMP = XX deg C Throttling level = XXXXh The number of the CPU TEMP indicates the CPU temperature at the m oment in decimal notation. For example, if the num ber is 57, the CPU temperature is 57 degrees. The number of “Throttling lev[...]

3 Tests and Diagnostics 3.5 Memory Test 3.5 Memory Test To execute the Memory Test, select 2 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions on the screen. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 Conventional memory This subtest writes constant data to conventional memory (0 to 640 [...]

3.5 Memory Test 3 Tests and Diagnostics Subtest 04 Cache Memory To test the cache memory, a pass-through write-read com parison of ‘5A’ data is run repeatedly to the test area (‘7000’:‘Program’ size to ‘7000’:‘7FFF’ (32 KB)) to check the hit-miss ratio (on/off status) for CPU cache mem ory. One test takes 3 seconds. Number of mi[...]

3 Tests and Diagnostics 3.6 Keyboard Test 3.6 Keyboard Test To execute the Keyboard Test, select 3 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions on the screen. Move the highlight bar to the subtest you want to execute and press Enter . Subtest 01 Pressed Key Display NOTE: The Num Lock and the Overlay mode must be off to execu[...]

3.6 Keyboard Test 3 Tests and Diagnostics Subtest 02 Pressed Key Code Display When a key is pressed, the scan code, character code, and key top name are displayed on the screen in the format shown below. The Ins, Caps Lock , Num Lock, Scroll Lock, Alt, Ctrl, Left Shift , and Right Shift keys are displayed in reverse screen mode when pressed. The sc[...]

3 Tests and Diagnostics 3.6 Keyboard Test *** IPS (PAD) TEST (Vx.xx) *** < POINTING > <PARAMETER> STATUS:0018h X-RATE:00FFh Y-RATE:0001H <BUTTON> (1) (2) << PRESS BUTTON1+ BUTTON2 THEN END >> << PRESS BUTTON1+BUT TON2 THEN END >> <PARAMETER> STATUS:0000h X-RATE:0000h Y-RATE:0000H <BUTTON> (1) (2[...]

3.6 Keyboard Test 3 Tests and Diagnostics If the test ends successfully, OK is displayed. If nothing is displayed, there may be a problem with the USB port. Check the wraparound connection and repeat the test. To check only the USB mouse, follow the procedures below: Connect the USB mouse to the computer’s USB connector. Next, set up the computer[...]

3 Tests and Diagnostics 3.7 Display Test 3.7 Display Test To execute the Display Test, select 4 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions on the screen. The Display test contains seven subtests that test the display in various modes. Move the highlight bar to the subtest you want to execute and press Enter . Subtest 01 VR[...]

3.7 Display Test 3 Tests and Diagnostics Subtest 04 Gradation & Mode test for VGA This subtest displays gradations for each mode. Execute the test, then press Enter to change the mode. The display below appears on the screen when this subtest is executed. Pressing Enter changes the size of the displayed image. [ Mode 12 ] [ Mode 13 ] Pressing E[...]

3 Tests and Diagnostics 3.7 Display Test Pressing Enter changes the size of the displayed image. [ Mode 3 ] Pressing Enter changes the size of the displayed image in the following order: Mode 111 640*480 64K Mode 112 640*480 16M Mode 114 800*600 64K Mode 115 800*600 16M Mode 117 1024*768 64K [Mode 111 640 * 480 64K] To exit this subtest and return [...]

3.7 Display Test 3 Tests and Diagnostics Subtest 06 “H” Pattern Display This subtest displays a full screen of “H” patterns. HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHH[...]

3 Tests and Diagnostics 3.8 Floppy Disk Test 3.8 Floppy Disk Test NOTE : Before running the floppy disk test, prepare a formatted work disk. Remove the Diagnostics Disk and insert the work disk into the FDD. Otherwise, the contents of the floppy disk will be erased. To execute the Floppy Disk Test, select 5 from the DIAGNOSTIC TEST MENU, press Ente[...]

3.8 Floppy Disk Test 3 Tests and Diagnostics Subtest 01 Sequential read This subtest performs a Cyclic Redundancy Check (CRC) that continuously reads all the tracks (track: 0 to 39/0 to 79) on a floppy disk. The start track is specified at the start of the FDD test. Refer to 1. in this section. Subtest 02 Sequential read/write This subtest continuo[...]

3 Tests and Diagnostics 3.9 Printer Test 3.9 Printer Test To execute the Printer Test, select 6 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions on the screen. The Printer Test contains three subtests that test the output of the printer connected to the computer. The following m essages will appear after selecting the Printer Te[...]

3.9 Printer Test 3 Tests and Diagnostics Subtest 02 Function This subtest is for IBM compatible printers, and tests the following f unctions: Normal print Double-width print Compressed print Emphasized print Double-strike print All characters print This subtest prints the various print types shown below: Subtest 03 Wrap around NOTE : To execute thi[...]

3 Tests and Diagnostics 3.9 Async Test 3.10 Async Test To execute the Async Test, select 7 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions displayed on the screen. The Async test contains two subtests that test the asynchronous communication functions. Move the highlight bar to the subtest you want to execute and press Enter. S[...]

3.11 Hard Disk Test 3 Tests and Diagnostics 3.11 Hard Disk Test To execute the Hard Disk Test, select 8 from the DIAGNOSTIC TEST MENU, press Enter , and follow the directions on the screen. The hard disk test contains ten subtests that test the hard disk drive functions. NOTE : To execute the subtest 02,03,04,06,09 or 10, the system requires you to[...]

3 Tests and Diagnostics 3.9 Async Test HARD DISK TEST XXXXXXX SUB-TEST : XX PASS COUNT : XXXXX ERROR COUNT :XXXXX WRITE DATA : XX READ DATA :XX ADDRESS : XXXXXX STATUS :XXX The first three digits of the ADDRESS indicate which cylinder is being tested, the fourth digit indicates the head and the last two digits indicate the sector. The first digit o[...]

3.11 Hard Disk Test 3 Tests and Diagnostics Subtest 04 Cross Talk & Peak Shift This subtest writes eight types of worst pattern data (listed below) to a cylinder, then reads the data while moving from cylinder to cylinder. Worst pattern data Cylinder ‘B5ADAD’ 0 cylinder ‘4A5252’ 1 cylinder ‘EB6DB6’ 2 cylinder ‘149249’ 3 cylinder[...]

3 Tests and Diagnostics 3.9 Async Test 3.12 Real Timer Test To execute the Real Timer Test, select 9 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions on the screen. The real timer test contains three Subtests that test the computer’s real timer functions. Move the highlight bar to the Subtest you want to execute and press Ente[...]

3.12 Real Timer Test 3 Tests and Diagnostics Subtest 03 Real Time Carry CAUTION : When you execute this Subtest, the current date and time are erased. This Subtest checks the real time clock increments, m aking sure the date and time are displayed in the following form at: Current date : 12-31-2001 Current time : 23:59:58 PRESS [Enter] KEY TO EXIT [...]

3 Tests and Diagnostics 3.12 NDP Test 3.13 NDP Test To execute the NDP test, select 10 from the DIAGNOSTICS TEST MENU, press Enter and follow the directions on the screen. The NDP test contains one Subtest that tests the computer’s NDP functions. Subtest 01 NDP This test checks the following functions of the coprocessor:  Control word  Stat[...]

3 Tests and Diagnostics 3.14 Expansion Test 3 3.14 Expansion Test To execute the expansion test, select 11 from the DIAGNOSTICS TEST MENU, press Enter and follow the directions on the screen. The expansion test contains two subtests. NOTE: To execute this subtest, the PC card wraparound connector is required. Subtest 01 PCMCIA Wraparound This test [...]

3.14 Expansion Test 3 Tests and Diagnostics Subtest 03 RGB monitor ID For this test, the computer must be in CRT m ode. Connect the CRT (an RGB monitor) with the external monitor port. Satellite A20 Maintenance Manual (960-444) 3-35[...]

3 Tests and Diagnostics 3.15 CD-ROM/DVD-ROM Test 3.15 CD-ROM/DVD-ROM Test To execute the CD-ROM/DVD-ROM test, select 13 from the DIAGNOSTICS TEST MENU, press Enter and follow the directions on the scree n. The CD-ROM/DVD-ROM test contains six Subtests that test the computer’s CD-ROM/DVD-ROM functions. Subtest 01 Sequential Read This Subtest is a [...]

3.16 Wireless LAN Test (Agere) 3 Tests and Diagnostics 3.16 Wireless LAN Test (Agere) This section describes how to perform the wireless LAN transm itting-receiving test with the test program. Note: Use another computer (with Agere wireless LAN card) that can communicate by the wireless LAN as a reference machine to perform this test. To start the [...]

3 Tests and Diagnostics 3.16 Wireless LAN Test (Agere) Subtest 01 Transmit & Receive test This sub test checks transmit and receive functions. Transmit test Press 1 to select the test and press Enter in the target machine as a responder. The following message will appear: ############################################################# #### Wirele[...]

3.16 Wireless LAN Test (Agere) 3 Tests and Diagnostics When the machine has passed the test, “OK” m essage will appear in the test machine. Then press Enter in the target machine; the “OK” me ssage will appear also in the target machine. Press Enter to return to the main menu. Receive test In receive test reverse the procedures of the tr an[...]

3 Tests and Diagnostics 3.16 Wireless LAN Test (Agere) Press 0 to select the test and press Enter in the target machine. The following message will appear: ############################################################# #### Wireless LAN sub system repair test VX.XX #### ############################################################# * * * 1 Transmit &[...]

3.16 Wireless LAN Test (Agere) 3 Tests and Diagnostics Subtest 02 Mac Address test This subtest reads MAC Address. If there is no problem, the “OK” message will appear. Subtest 03 Wireless LAN (WEP64/128) test This subtest reads the WEP of the wireless LAN card installed in the target machine. A message sim ilar to the following will appear: **[...]

3 Tests and Diagnostics 3.17 Wireless LAN Test (Atheros) 3.17 Wireless LAN Test (Atheros) This section describes how to perform the wireless LAN transm itting-receiving test with the test program. Note: Use another computer (with Atheros wireless LAN card) that can communicate by the wireless LAN as a responder machine to perform this test. In this[...]

3.17 Wireless LAN Test (Atheros) 3 Tests and Diagnostics Setting the responder machine Note: Release the write-protection of the floppy disk for the test. Insert a floppy disk containing the test program into the FDD for the responder machine and turn on the responder machine. The Wireless LAN test m enu will appear. ###############################[...]

3 Tests and Diagnostics 3.17 Wireless LAN Test (Atheros) When the tester machine has passed the test, "OK" m essage will appear in the tester machine. Press Enter to return to the main menu. When the tester machine has not passed the test, "NG" m essage will appear in the tester machine. Pressing Enter on the screen shows the fo[...]

3.18 Sound/LAN/Modem Test 3 Tests and Diagnostics 3.18 Sound/LAN/Modem Test This section describes how to perform the Sound/LAN/Modem test with the test program . CAUTION : The system is capable of producing high volume sound. When you use a headphone, be careful to set the volume low and adjust it as necessary. Using a headphone at full volume mig[...]

3 Tests and Diagnostics 3.18 Sound/LAN/Modem Test Subtest 01 Microphoned recording & play This subtest checks the function of the CODEC A/D D/A converter. Both the microphone and headphone terminal can be checked at the sam e time. Before executing this subtest, connect an external microphone to the computer. IF necessary, connect a headphone t[...]

3.18 Sound/LAN/Modem Test 3 Tests and Diagnostics Copyright (C) 2000 Acer Laboratories Inc. All Rights Reserved. Playback Parameters : Wave File Name = record.wav Wave Channel Index = 1 (d) SPDIF On-Off Option = 0 (d) Play Wave Volume Gain = 15 (d) When "SPDIF" is "On", Options Listed Below Will Be Ignored: Sound Track Option Pl[...]

3 Tests and Diagnostics 3.18 Sound/LAN/Modem Test Subtest 03 LAN Test (a) Select 3 to execute and press Enter . The following message will appear: COMPLETED Repeat count = 00000 Error count = 00000 XXXX (XXXXX) LAN TEST Vol.X.XX 100Mbps Auto-negotiation TxRx Test Destination Address = xxxxxxxxxxxx Source Address = xxxxxxxxxxxx ** 100Base-TX Full-Du[...]

3.18 Sound/LAN/Modem Test 3 Tests and Diagnostics Subtest 04 Modem Test (a) Select 4 to execute and press Enter . The following message will appear: MDC Test Program [PCB (MDC I/F) Test] for M1535 plus Version X.X * Scorpio Modem Initialize :OK * Digital Loopback :OK * Modem Sound Test :( Operator’s Check!! ) (b) After a few seconds, the followin[...]

3 Tests and Diagnostics 3.18 Sound/LAN/Modem Test Subtest 05 USB 2.0 The subtest is executed, the following message appears. ((( USB Test Program for UPD720100GM-8ED System [Ver.2.00] ))) (C) Copyright TOSHIBA Corporation, 2001-2002. All rights reserved. * Read PCI Configuration :OK * HC Initialize :OK * Work Area (Memory) Initialize :OK * OHCI0 In[...]

3.19 Error Code and Error Status Names 3 Tests and Diagnostics 3.19 Error Code and Error Status Names Table 3-2 lists the error codes and error status names for the Diagnostic Test. Table 3-2 Error codes and error status names (1/3) Device name Error code Error status name (Common) FF Data Compare Error System 01 03 04 05 06 07 08 09 10 ROM Checksu[...]

3 Tests and Diagnostics 3.19 Error Code and Error Status Names Table 3-2 Error codes and error status names (2/3) Device name Error code Error status name FDD 01 02 03 04 06 08 09 10 20 40 60 80 EE Bad Command Error Address Mark Not Found Write Protected Record Not Found Media Removed DMA Overrun Error DMA Boundary Error CRC Error FDC Error Seek Er[...]

3.19 Error Code and Error Status Names 3 Tests and Diagnostics Table 3-2 Error codes and error status names (3/3) Device name Error code Error status name NDP 01 02 03 04 05 06 No Co-Processor Control Word Error Status Word Error Bus Error Addition Error Multiply Error Expansion C1 C4 C5 C6 C7 C8 CB CD CE Address Line Error CE#2 Line Error DATA Lin[...]

3 Tests and Diagnostics 3.20 Hard Disk Test Detail Status 3.20 Hard Disk Test Detail Status When an error occurs in the hard disk test, the following message is displayed: HDC status = XXXXXXXX Detailed information about the hard disk test error is displayed on the screen by an eight-digit number. The first four digits represent the hard disk contr[...]

3.20 Hard Disk Test Detail Status 3 Tests and Diagnostics Table 3-4 Error register contents Bit Name Description 7 BBK1 (Bad block mark) “0” … Not used “1” … A bad block mark is detected. 6 UNC (Uncorrectable) “0” … There is no uncorrectable data error. “1” … Uncorrectable data error has been detected. 5 —— Not used 4 ID[...]

3 Tests and Diagnostics 3.21 Head Cleaning 3.21 Head Cleaning 3.21.1 Function Description This function cleans the heads in the FDD by executing a series of head load/seek and read operations. A cleaning kit is necessary to perform this program. 3.21.2 Operations 1. Selecting test 4 from the DIAGNOSTIC MENU and pressing Enter displays the following[...]

3.22 Log Utilities 3 Tests and Diagnostics 3.22 Log Utilities 3.22.1 Function Description This function logs error information generated while a test is in progress and stores the results in RAM. This function can store data on a floppy disk or output the data to a printer. If the power switch is turned off, the error in form ation will be lost. Th[...]

3 Tests and Diagnostics 3.22 Log Utilities 2. The error information displayed on the screen can be manipulated by the following number keys: 1 scrolls the display to the next page. 2 scrolls the display to the previous page. 3 returns to the Diagnostic Menu. 4 erases all error log information in RAM. 5 outputs the error log information to a printer[...]

3.23 Running Test 3 Tests and Diagnostics 3.23 Running Test 3.23.1 Function Description This function automatically executes the following tests in sequence: 1. System test (subtest 01) 2. Memory test (subtests 01, 02, 04, and 06) 3. Real timer test (subtest 02) 4. Display test (subtest 01) 5. FDD test (subtest 02) 6. HDD test (subtests 01 and 05) [...]

3 Tests and Diagnostics 3.23 Running Test 4. Select No and press Enter . The following message will appear: Mount the work disk(s) on the drive(s), then press [Enter] key. [Warning : The contents of the disk(s), will be destroyed.] 5. This program is executed continuously. To terminate the program , press Ctrl +Break . 3-60 Satellite A20 Maintenanc[...]

3.24 Floppy Disk Drive Utilities 3 Tests and Diagnostics 3.24 Floppy Disk Drive Utilities 3.24.1 Function Description This function formats the FDD, copies the floppy disk and displays the dump list for both the FDD and HDD. 1. FORMAT NOTE : This program is only for testing a floppy disk drive. The option is different from the Toshiba MS-DOS FORMAT[...]

3 Tests and Diagnostics 3.24 Floppy Disk Drive Utilities 3.24.2 Operations 1. Selecting 7 from the DIAGNOSTIC MENU and pressing Enter displays the following message: [ FDD UTILITIES ] 1 - FORMAT 2 - COPY 3 - DUMP 4 - HDD ID READ 9 - EXIT TO DIAGNOSTICS MENU 2. FORMAT program (a) Selecting FORMAT displays the following message: DIAGNOSTICS - FLOPPY [...]

3.24 Floppy Disk Drive Utilities 3 Tests and Diagnostics 3. COPY program (a) When COPY is selected, the following message appears: FLOPPY DISK FORMAT & COPY : VX.XX Type select (0:2DD,3:2HD) ? (b) Selecting a media/drive type number will display a message similar to the one below: Insert source disk into drive A: Press any key when ready. (c) R[...]

3 Tests and Diagnostics 3.24 Floppy Disk Drive Utilities 4. DUMP program (a) When DUMP is selected, the following message appears: DIAGNOSTICS-HARD DISK & FLOPPY DISK DUMP : VX.XX Drive type select (1:FDD, 2:HDD) ? (b) When FDD is selected, the following message appears. Select a format type number. When HDD is selected, the display will go to [...]

3.24 Floppy Disk Drive Utilities 3 Tests and Diagnostics Satellite A20 Maintenance Manual (960-444) 3-65 5. HDD-ID READ Selecting HDD ID READ displays th e following HDD ID configuration: [HDD ID Read (VX.XX)] [Drive #X] ID code (h) = XXXX No. of Cylinders = XXXX XXXX Removable Cylinders = XXXX XXXX No. of Heads = XXXX XXXX Unformat Bytes/Track = X[...]

3 Tests and Diagnostics 3.25 System Configuration 3 3.25 System Configuration 3.25.1 Function Description The System Configuration program contains th e following configuration information for the computer: 1. Processor Type 2. VGA Controller 3. MS-DOS Version 4. BIOS ROM version (1st ID, 2nd ID) 5. Boot ROM version 6. KBC version 7. PS Microproces[...]

3.25 System Configuration 3 Tests and Diagnostics 3.25.2 Operations Selecting 8 from the DIAGNOSTIC MENU and pressing Enter displays the following system configuration: System Configuration Display : Ver X.XX [Machine Name ???] * - Processor Type = XXXX **- VGA Controller = XXXX * - MS-DOS Version = VX.XX * - BIOS ROM Version = VX.XX 1st ID = XXH, [...]

3 Tests and Diagnostics 3.26 SETUP 3.26 SETUP 3.26.1 Function Description This program displays the current system setup inform ation as listed below: 1. Memory (a) Total 2. Password 3. Battery (a) Battery Save Mode 4. Peripheral (a) Internal Pointing Device (b) Parallel Port Mode (c) Hard Disk Mode 5. Display (a) Power On Display (b) LCD Display S[...]

3.26 SETUP 3 Tests and Diagnostics 11. Legacy Emulation (a) USB keyboard/Mouse Legacy Emulation (b) USB-FDD Legacy Emulation 12. PC Card (a) Controller Mode 13. Drives I/O (a) Built-in HDD (b) Select Bay 14. PCI LAN (a) Built-in LAN Satellite A20 Maintenan ce Manual (960-444) 3-69[...]

3 Tests and Diagnostics 3.26 SETUP 3.26.2 Accessing the SETUP Program Selecting 0 from the DIAGNOSTICS MENU and pressing Enter displays the TSETUP screen. The TSETUP screen is divided into two pages: SYSTEM SETUP (1/2) and SYSTEM SETUP (2/2). SYSTEM SETUP (1/2) ACPI BIOS version = x.xx MEMORY BOOT PRIORITY Total = xxxxxxKB Boot Priority = HDD FDD C[...]

3.26 SETUP 3 Tests and Diagnostics NOTE: 1. Panel Power On/Off item appears only when the Power-up Mode is in Resume mode. 2. The USB FDD Legacy Emulation item appears under the LEGACY EMULATION item only when Floppy Disk I/O is set to Disabled. 3. The LCD Display Stretch item appears under the Display item only when the LCD screen resolution is XG[...]

3 Tests and Diagnostics 3.26 SETUP Moving Within the SETUP Menu and Changing Values 1. Press Å and Æ to move between the two colum ns. Press PgDn and PgUp to move between the two pages. Press ↑ and ↓ to move between items in a colum n. 2. Press either the space bar to change the value. Accepting Changes and Exiting the SETUP Window 1. Press E[...]

3.26 SETUP 3 Tests and Diagnostics SETUP Options The SETUP screen is divided into functionally related groups. This section describes each group and its options. 1. Memory This group of options displays the computer’s mem ory. (a) Total This field displays the total amount of mem ory installed and is automatically calculated by the computer. You [...]

3 Tests and Diagnostics 3.26 SETUP Display Auto Off Use this option to disable or set the duration of the display automatic power off function. This function causes the computer to turn the LCD panel’s illumination off if you make no entry for the set period of tim e. Disabled Disables display automatic power off. xx Min. Automatically turns off [...]

3.26 SETUP 3 Tests and Diagnostics 4. Peripheral Use this option to select the parallel port mode and hard disk mode. (a) Internal Pointing Device This option enables and disables the Touch Pad. Enabled Enables the Touch Pad. (Default) Disabled Disables the Touch Pad. (b) Parallel Port Mode The options in this tab are ECP and Standard Bi-directiona[...]

3 Tests and Diagnostics 3.26 SETUP 5. Display This group of options configures the computer’s display. (a) Power On Display This option is used to select the display when booting up. Auto-Selected Selects an external monitor if one is connected. Otherwise it selects the internal LCD. (Default) LCD+AnalogRGB Selects both the internal LCD and the e[...]

3.26 SETUP 3 Tests and Diagnostics 6. Boot Priority This tab sets the priority for booting the computer and the priority for the built-in HDD or optional secondary HDD. (a) Boot Priority HDD → FDD → CD-ROM → LAN: The computer looks for bootable files in the following order: HDD,FDD, CD- ROM and LAN. (Default) FDD → HDD → CD-ROM → LAN: T[...]

3 Tests and Diagnostics 3.26 SETUP (c) Network Boot Protocol Use this option to set the starting method via a network. PXE Sets to PXE protocol (Default) RPL Sets to PRL protocol 7. Others Whether or not you need to configure the computer with these options depends primarily on the kind of software or peripherals you use. (a) Power-up Modes Use thi[...]

3.26 SETUP 3 Tests and Diagnostics Use this option to set a time and date for automatic power on and enable or disable the ring indicator feature. Ring Indicator displays only when the computer is in Resume m ode and the Alarm Date Option displays when Alarm Time is enabled. OPTIONS Alarm Time = 00:00:00 Alarm Date Option = Disabled Ring Indicator [...]

3 Tests and Diagnostics 3.26 SETUP 9. Configuration This field displays the configuration method. The devices are initialized when the PNP OS loads. Setup by OS First, devices necessary for loading the OS will be initialized. After the PNP OS loads, other devices will be initialized by the OS. In this case, setup of PC Cards will be fixed to “Aut[...]

3.26 SETUP 3 Tests and Diagnostics When the Printer Port Mode (see settings below) is set to ECP , the DMA channel can also be set to 1 , 2 or 3 . The default is 3. LPT setting Interrupt level I/O address DMA channel LPT 1 7 378H 3 (Parallel port default) LPT 2 5 278H 3 LPT 3 7 3BCH 3 Not Used Disables the port When you select one of the above opti[...]

3 Tests and Diagnostics 3.26 SETUP 11. PCI Bus This item displays the interrupt level for the Card Bus. It is for information only and cannot be changed. PCI BUS = IRQ11 12. Legacy Emulation. (a) USB keyboard/Mouse Legacy Emulation. Use this option to enable or disable USB KB/Mouse Legacy Emulation. If your operating system does not support USB, yo[...]

3.26 SETUP 3 Tests and Diagnostics (b) CD-ROM Secondary IDE (170H/IRQ15) (c) PC Card When an ATA card is installed in IN13h, the sub window below is displayed. Built-in HDD = Primary IDE (1F0H/IRQ14) ATA Card = Others (190H/IRQ) DRIVES I / O 15. PCI LAN (Not used) This option enables/disables the Built-in LAN functions. (a) Built-in LAN Enabled Ena[...]

3 Tests and Diagnostics 3.26 SETUP 3-84 Satellite A20 Maintenance Manual (960-444)[...]

Chapter 4 Replacement Procedures[...]

4 Replacement Procedures 4-ii Satellite A20 Maintenance Manual (960-444)[...]

4 Replacement Procedures Chapter 4 Contents 4.1 General .................................................................................................................... ... 4-1 4.2 Battery Pack ............................................................................................................... 4-8 4.3 Optional PC Card ...............[...]

4 Replacement Procedures 4.30.1 Replacing the 15.0-inch XGA LG.Philips Fluorescent Lamp ........... 4-83 4.30.2 Replacing the 15.0-inch XGA Samsung Fluorescent Lamp .............. 4-94 4.30.3 Replacing the 15.0-inch XGA Sharp Fluorescent Lamp.................. 4-104 4.30.4 Replacing the 15.0-inch XGA CHIMEI Fluorescent Lamp ............. 4-127 4.30[...]

4 Replacement Procedures Figure 4-17 Removing the Keyboard support plate ........................................................ 4-33 Figure 4-18 Removing the Memory m odule ................................................................... 4-35 Figure 4-19 Removing the Wireless LAN card cover .....................................................[...]

4 Replacement Procedures Figure 4-50 Replacing LG.Philips fl uorescent lamp (XGA) (1) ..................................... 4-84 Figure 4-51 Replacing LG.Philips fl uorescent lamp (XGA) (2) ..................................... 4-85 Figure 4-52 Replacing LG.Philips fl uorescent lamp (XGA) (3) ..................................... 4-86 Figure 4-53 R[...]

4 Replacement Procedures Figure 4-82 Replacing Sharp fluor escent lamp (XGA) (16) ......................................... 4-119 Figure 4-83 Replacing Sharp fluor escent lamp (XGA) (17) ......................................... 4-120 Figure 4-84 Replacing Sharp fluor escent lamp (XGA) (18) ......................................... 4-121 Figure 4-8[...]

4 Replacement Procedures Figure 4-114 Replacing Sharp fluorescent lamp (SXGA+) (2) ....................................... 4-156 Figure 4-115 Replacing Sharp fluorescent lamp (SXGA+) (3) ....................................... 4-157 Figure 4-116 Replacing Sharp fluorescent lamp (SXGA+) (4) ....................................... 4-158 Figure 4-117 [...]

4 Replacement Procedures Figure 4-146 Folding down the TAB .............................................................................. 4-188 Figure 4-147 Setting the bezel ......................................................................................... 4-189 Figure 4-148 Fixing the PCB and the bezel .....................................[...]

4 Replacement Procedures 4-x Satellite A20 Maintenance Manual (960-444)[...]

4.1 General 4 Replacement Procedures 4 Replacement Procedures 4.1 General This section 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 rem[...]

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

4.1 General 4 Replacement Procedures 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 adapter and the battery pack as instructed in this section: 1. Do not disassemble the computer unless it [...]

4 Replacement Procedures 4.1 General Disassembly Procedures The computer has two basic types of cable connectors: • Pressure Plate Connectors • Coaxial Cable Connectors • Normal 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 co[...]

4.1 General 4 Replacement Procedures 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 Replacement Procedures 4.1 General Screw Tightening Torque When you fasten screws, be sure to follow the torque list below. CAUTION: Overtightening can damage components and screws; undertightening can result in electrical shorts or other damage if screws or components come loose. NOTE: Toshiba recommends that you use an electric screw driver for[...]

4.1 General 4 Replacement Procedures Color of Screw Shaft To avoid mistakes on the screw length, screw shafts are colored as follows:  Even number length screw: brown  Odd number length screw: white  Special length screw: blue Screws whose lengths are indicated to one or more decimal places such as 2.5 m m or 2.8 mm. Marking of Screws on t[...]

4 Replacement Procedures 4.2 Battery Pack 4.2 Battery Pack Removing the Battery Pack To remove the battery pack, follow the steps below and refer to figure 4-1. CAUTION: When handling battery packs, be careful not to short circuit the terminals. Also do not drop, hit or apply impact; do not scratch or break the casing and do not twist or bend the b[...]

4.2 Battery Pack 4 Replacement Procedures Installing the Battery Pack To install the battery pack, follow the steps below and refer to figures 4-1. CAUTION: The battery pack is a lithium ion battery, which can explode if not properly replaced, used, handled or disposed of. Dispose of the battery as required by local ordinances or regulations. Use o[...]

4 Replacement Procedures 4.3 Optional PC Card 4.3 Optional PC Card Removing an Optional PC Card To remove a PC card (option), follow the steps below and refer to figure 4-2. CAUTION: Before you remove a PC card, refer to the card's documentation and to your operating system documentation for proper procedures and precautions. 1. Turn the compu[...]

4.3 Optional PC Card 4 Replacement Procedures Installing an Optional PC Card To install a PC card, follow the steps below and refer to figure 4-2. 1. Insert a PC card. 2. Push it carefully to ensure a firm connection. Satellite A20 Maintenan ce Manual (960-444) 4-11[...]

4 Replacement Procedures 4.4 Optional SD Card 4.4 Optional SD Card Removing an Optional SD Card To remove an SD card (option), follow the steps below and refer to figure 4-3. CAUTION: Before you remove an SD card, refer to the card's documentation and to your operating system documentation for proper procedures and precautions. 1. Turn the com[...]

4.5 HDD 4 Replacement Procedures 4.5 HDD CAUTION : When handling the HDD, do not press the top surface as shown by the arrow. Hold it by the sides. HDD Removing the HDD To remove the HDD, follow the steps below and refer to figures 4-4 to 4-6. 1. Turn the computer upside down. 2. Remove the following screw securing the HDD cover. • M2.5 × 4 FLAT[...]

4 Replacement Procedures 4.5 HDD 3. Lift up the HDD cover. 4. Pull the guide of the HDD and remove the HDD. Be careful not to damage the connector. HDD pack Guide Figure 4-5 Removing the HDD pack 4-14 Satellite A20 Main tenance Manual (960-444)[...]

4.5 HDD 4 Replacement Procedures NOTE: The following steps describe how to disassemble the HDD pack; however, do not disassemble if the HDD is working properly. 5. Place the HDD pack on a flat surface, and remove the following screws. • M3 × 4 FLAT screw × 4 6. Remove the HDD bracket. 7. Remove the aluminum cover. CAUTION: Do not apply pressure[...]

4 Replacement Procedures 4.5 HDD Installing the HDD To install the HDD, follow the steps below and refer to figures 4-4 to 4-6. CAUTION: Do not hold the HDD by its top and bottom flat surfaces. It may damage the HDD. 1. Fit the aluminum cover to the HDD. 2. Seat the HDD in the bracket. 3. Secure the HDD to the HDD bracket with the following screws.[...]

4.6 Modem Daughter Card 4 Replacement Procedures 4.6 Modem Daughter Card Removing the Modem Daughter Card To remove the modem daughter card, follow the steps below and refer to figure 4-7. 1. Remove the following screws securing the modem daughter card. • M2 × 3 SUPER FLAT screw × 2 2. Turn over the insulator covering the modem daughter card. 3[...]

4 Replacement Procedures 4.6 Modem Daughter Card Installing the Modem Daughter Card To install the modem daughter card, follow the steps below and refer to figure 4-7. 1. Carefully connect the modem cable to JP1 on the modem daughter card. 2. Turn over the insulator on the modem daughter card slot. 3. Seat the modem daughter card and press carefull[...]

4.7 ODD 4 Replacement Procedures 4.7 ODD Removing the ODD To remove the ODD, follow the steps below and refer to figures 4-8 and 4-9. CAUTION: The ODD can become hot with use. Be careful when removing the module. 1. Remove the following screw securing the ODD cover. • M2.5 × 6 FLAT HEAD screw × 2 2. While sliding the latch to the back side of t[...]

4 Replacement Procedures 4.7 ODD 3. Carefully slide the ODD to the side of the computer. M2.5 × 4 SUPER FLA T screws ODD Figure 4-8 Removing the ODD 4-20 Satellite A20 Main tenance Manual (960-444)[...]

4.7 ODD 4 Replacement Procedures 4. Remove the following screws and the plastic frame. • M2 × 3 SUPER FLAT screw × 4 • M2 × 5 SUPER FLAT screw × 1 M2 × 3 SUPER FLA T screw Frame M2 × 3 SUPER FLA T screw M2 × 5 SUPER FLA T screw Figure 4-9 Disassembling the ODD Satellite A20 Maintenan ce Manual (960-444) 4-21[...]

4 Replacement Procedures 4.7 ODD Installing the ODD To install the ODD, follow the steps below and refer to figures 4-8 and 4-9. 1. Seat the plastic frame on the side of the ODD, and secure it with the following screws. • M2 × 3 SUPER FLAT screw × 4 • M2 × 5 SUPER FLAT screw × 1 2. Slide the ODD and connect the drive to PJ1820 on the system[...]

4.8 Cooling Fan 4 Replacement Procedures 4.8 Cooling Fan Removing the Cooling Fan To remove the cooling fan, follow the steps below and refer to figure 4-10. NOTE : A filter is attached to the back of the fan cover to prevent dust or dirt from entering inside of the computer. When you removed the fan cover, make sure there is no dust or dirt on the[...]

4 Replacement Procedures 4.8 Cooling Fan 5. Disconnect the fan cable from PJ9900 on the system board. M2.5 × 6 FLA T HEAD scr ew M2.5 × 4 FLA T HEAD screw PJ9900 Fan M2.5 × 6 FLA T HEAD scr ew Fan cover Fin cover Figure 4-10 Removing the Cooling fan module 4-24 Satellite A20 Main tenance Manual (960-444)[...]

4.8 Cooling Fan 4 Replacement Procedures Installing the Cooling Fan To install the cooling fan, follow the steps below and refer to figures 4-10. CAUTION: Before installing the fan cover, vacuum off dust or dirt on the indentation of the filter attached to the fan cover. 1. Seat the cooling fan. 2. Secure the cooling fan with the following screws. [...]

4 Replacement Procedures 4.9 CPU 4.9 CPU Removing the CPU To remove the CPU, follow the steps below and refer to figures 4-11 to 4-14. CAUTION: When you remove the CPU, wipe the grease off of the bottom of the heat sink, bottom of the cooling fan and top of the CPU. Apply new grease when installing. 1. Remove the following screw securing the fin co[...]

4.9 CPU 4 Replacement Procedures 2. Remove the fan cover and fan. NOTE: To remove the fin, the fan cover and fan must be removed. For removing the fan cover and fan, refer to 4.8 Cooling Fan . 3. Remove the following screws securing the fin and remove the fin by lifting it up directly above. • M2 × 18 BIND screw × 2 CAUTION: Silicon grease is a[...]

4 Replacement Procedures 4.9 CPU 4. Turn the cam to the unlock position with a flat-blade screwdriver to unlock the CPU. Figure 4- 13 Unlocking the CPU 4. Lift up the CPU. 4-28 Satellite A20 Main tenance Manual (960-444)[...]

4.9 CPU 4 Replacement Procedures Installing the CPU To install the CPU, follow the steps below and refer to figures 4-11 to 4-14. 1. Make sure the cam is in the open position. 2. Seat the CPU in the CPU socket. Make sure the alignment is exact to avoid damaging pins on the CPU. 3. Press the interposer gently with your fingers and turn the cam on th[...]

4 Replacement Procedures 4.9 CPU 4-30 Satellite A20 Main tenance Manual (960-444) 5. Place the fin and secure it with the following screws. • M2 × 18 BIND screw × 2 6. Install the fan and fan cover. NOTE: To remove the fin, the fan cover and fan must be removed. For installing the fan and fan cover, refer to 4.8 Cooling Fan . 7. Place the fin c[...]

4.10 Keyboard 4 Replacement Procedures 4 Replacement Procedures 4.10 Keyboard Removing the Keyboard To remove the keyboard, follow the steps below and refer to figures 4-15 to 4-17. 1. Turn the computer face up and open the display panel. 2. Insert your fingernails into latches between the keyboard brace and the computer, and lift up the keyboard b[...]

4 Replacement Procedures 4.10 Keyboard 3. Remove the following screws securing the keyboard. • M2.5 × 4 FLAT HEAD screw × 2 4. Remove the following screw securing the keyboard hold plate and remove the keyboard hold plate. • M2.5 × 4 FLAT HEAD screw × 1 M2.5 × 4 FLA T HEAD s crew M2.5 × 4 FLA T HEAD sc rew Keyboard hold p late Figure 4-16[...]

4.10 Keyboard 4 Replacement Procedures 5. Rotate out the keyboard and lay it on top of the palm rest. 6. Remove the following screw securing the keyboard support plate and remove the keyboard support plate. • M2.5 × 6 FLAT HEAD screw × 1 PJ3230 M2.5 × 6 SUPER FLA T scre w Ke yboard support plate Ta b Figure 4-17 Removing the Keyboard support p[...]

4 Replacement Procedures 4.10 Keyboard Installing the Keyboard To install the keyboard, follow the steps below and refer to figures 4-15 to 4-17. 1. Seat the keyboard face down on the palm rest. 2. Connect the keyboard cable to PJ3230 on the system board. 3. Insert the tabs on the keyboard support plate first, then place the keyboard support plate [...]

4.11 Memory Module 4 Replacement Procedures 4.11 Memory Module Removing a Memory Module To remove a mem ory module, make sure the com puter is in boot mode and powered off, follow the steps below and refer to figures 4-18. CAUTION: Do not try to remove a memory module with the computer turned on. The computer or the memory might be damaged. CAUTION[...]

4 Replacement Procedures 4.11 Memory Module Installing a Memory Module To install a memory m odule, make sure that the computer is in boot m ode and powered off, follow the steps below and refer to figure 4-18. CAUTION: 1) Do not install a memory module in slot B only. Use slot A prior to slot B. Otherwise, the computer or the memory may be damaged[...]

4.12 Wireless LAN Card 4 Replacement Procedures 4.12 Wireless LAN Card Removing the Wireless LAN Card To remove the wireless LAN card, make sure the com puter is in boot mode and powered off, follow the steps below and refer to figures 4-19 and 4-20. NOTE: The wireless LAN card is an option in some models. This computer supports two types of wirele[...]

4 Replacement Procedures 4.12 Wireless LAN Card 3. Disconnect the wireless LAN antenna cables (black and white) from the wireless LAN card using an antenna coaxial cable disconnector. PJ2200 W ireless LAN card W ireless LAN antenna cables (black and white) Ke yboard insulator (black) Figure 4-20 Removing the Wireless LAN card 4. Push the wireless L[...]

4.12 Wireless LAN Card 4 Replacement Procedures Installing the Wireless LAN Card To install the wireless LAN card, make sure that the computer is in boot m ode and powered off, follow the steps below and refer to figure 4-21. CAUTION: Be sure to switch the computer off before removing the wireless LAN card. Otherwise, the computer or the wireless L[...]

4 Replacement Procedures 4.13 Bluetooth 4.13 Bluetooth Removing the Bluetooth To remove the Bluetooth, follow the steps below and refer to figure 4-21. CAUTION: Do not try to remove the Bluetooth module with the computer turned on. You can damage the computer or Bluetooth module. Do not touch the connectors on the Bluetooth module on the computer. [...]

4.13 Bluetooth 4 Replacement Procedures M2 × 3 SUPER FLA T screw Bluetooth SUMI card Bluetooth module Bluetooth coaxial cable PJ4900 Figure4-21 Removing the Bluetooth module Installing the Bluetooth To install the Bluetooth, follow the steps below and refer to figure 4-21. 1. Connect the Bluetooth SUMI card to the connector on the Bluetooth module[...]

4 Replacement Procedures 4.14 Top Cover with Display Assembly 4.14 Top Cover with Display Assembly Removing the Top Cover with Display Assembly To remove the top cover with display assembly, follow the steps below and refer to figures 4-23 and 4-24. 1. Turn the computer face down, and remove the following 24 screws: • M2.5 × 6 FLAT HEAD screw ×[...]

4.14 Top Cover with Display Assembly 4 Replacement Procedures 2. Disconnect the sub fan cable from PJ8770 on the system board. 3. Turn the computer face up and open the display panel. 4. Remove the following screws securing the top cover. • M2.5 × 6 FLAT HEAD screw × 4 5. Turn up the keyboard insulator an d disconnect the two LCD cables from PJ[...]

4 Replacement Procedures 4.14 Top Cover with Display Assembly Installing the Top Cover with Display Assembly To install the top cover with display assembly, follow the steps below and refer to figures 4-23 and 4-24. 1. Install the top cover on the display assembly. NOTE : When installing the top cover on display assembly, be careful to pinch the wi[...]

4.15 Touch Pad 4 Replacement Procedures 4.15 Touch Pad Removing the Touch Pad To remove the touch pad, follow the steps below and refer to figure 4-25. 1. Disconnect the touch pad SUMI card from PJ3240 on the system board. 2. Remove the following screw securing the touch pad. • M2.5 × 4 FLAT HEAD screw × 1 3. Lift out the touch pad. T ouch Pad [...]

4 Replacement Procedures 4.15 Touch Pad Installing the Touch Pad To install the touch pad, follow the steps below and refer to figure 4-25. 1. Connect the touch pad SUMI card to J1 on the touch pad, if necessary. 2. Seat the touch pad. 3. Secure the touch pad with the following screw. • M2.5 × 4 FLAT HEAD screw × 1 4. Connect the touch pad SUMI[...]

4.16 Front Membrane ASSY 4 Replacement Procedures 4.16 Front Membrane ASSY Removing the Front Membrane ASSY To remove the front mem brane ASSY, follow the steps below and refer to figure 4-26. 1. Disconnect the front membrane cable from PJ3260 on the system board. 2. Remove the following screws securing the front membrane holder. • M2.5 × 4 FLAT[...]

4 Replacement Procedures 4.16 Front Membrane ASSY Installing the Front Membrane ASSY To install the front membrane ASSY, follow the steps below and refer to figures 4-26. 1. Place the front membrane ASSY and front mem brane holder on it, and secure them with the following screws. • M2.5 × 4 FLAT HEAD screws × 2 2. Connect the front membrane cab[...]

4.17 FIR Board 4 Replacement Procedures 4.17 FIR Board Removing the FIR Board To remove the FIR board, follow the steps below and refer to figure 4-27. 1. Remove the following screws securing the FIR board. • M2.5 × 6 FLAT HEAD screws × 2 2. Disconnect the FIR board from PJ9500 on the system board. PJ9610 FIR Board PJ9500 M2.5 × 6 FLA T HEAD s[...]

4 Replacement Procedures 4.17 FIR Board Installing the FIR Board To install the FIR board, follow the steps below and refer to the figure 4-27. 1. Connect the FIR board to PJ9500 on the system board. 2. Check the position of the wireless communication switch on the FIR board and the switch on the system chassis. Fit their positions and place the FI[...]

4.18 Sound Board 4 Replacement Procedures 4.18 Sound Board Removing the Sound Board To remove the sound board, follow the steps below and refer to figure 4-28. 1. Disconnect the sound board SUMI card from PJ9510 and PJ9511 on the system board. 2. Remove the following screw securing the sound board. • M2.5 × 6 FLAT HEAD screw × 1 3. Lift up the [...]

4 Replacement Procedures 4.18 Sound Board Installing the Sound Board To install the sound board, follow the steps below and refer to figure 4-28. 1. Connect the sound board SUMI card to PJ9600 and PJ9601 on the sound board. 2. Seat the sound board. When seating, insert three jacks on the sound board into the holes of the chassis first. 3. Connect t[...]

4.19 RTC Battery 4 Replacement Procedures 4.19 RTC Battery WARNING: When replacing the RTC battery, be sure to use genuine batteries or replacement batteries authorized by Toshiba. Installing the wrong battery could cause a battery explosion or other damage. If the RTC battery is found abnormal, it must not be installed. Replace it with a new batte[...]

4 Replacement Procedures 4.19 RTC Battery Removing the RTC Battery To remove the RTC battery, follow the steps below and refer to figure 4-29. 1. Disconnect the RTC battery cable from PJ9999 on the system board. 2. Pull the hook on each side fixing the RTC battery outward and lift out the RTC battery. RTC battery PJ9999 System board Figure 4-29 Rem[...]

4.20 DC-IN Jack 4 Replacement Procedures Satellite A20 Maintenan ce Manual (960-444) 4-55 4.20 DC-IN Jack Removing the DC-IN Jack To remove the DC-IN jack, follow the steps below and refer to figure 4-30. 1. Disconnect the DC-IN cable from PJ8800 on the system board. 2. Remove the DC-IN jack. DC-IN cable PJ8800 DC-IN jack Figure 4-30 Removing the D[...]

4 Replacement Procedures 4.21 System Board 4 Replacement Procedures 4.21 System Board Removing the System Board To remove the system board, follow the steps below and refer to figure 4-31. 1. Remove the following screws securing the plastic holder and the system board. • M2.5 × 6 FLAT HEAD screw × 3 M2.5 × 6 FLA T HEAD scre ws Ke y bracket Sys[...]

4.21 System Board 4 Replacement Procedures Installing the System Board To install the system board, follow the steps below and refer to figures 4-31. 1. Install the key bracket on the left side of the chassis. 2. Set the modem jack and hook the cable under the guides. 3. Seat the system board and plastic holder. When seating the system board, inser[...]

4 Replacement Procedures 4.22 Sub Fan 4.22 Sub Fan Removing the Sub Fan To remove the sub fan board, follow the steps below and refer to figure 4-32. 1. Remove the following screws securing the sub fan. • M2.5 × 6 FLAT HEAD screw × 2 2. Remove the sub fan. M2.5 × 6 FLA T HEAD s crew Sub fan Chassis Sub fan cable Figure4-32 Removing the Sub Fan[...]

4.22 Sub Fan 4 Replacement Procedures Installing the Sub Fan To install the sub fan board, follow the steps below and refer to figures 4-32. 1. Place the sub fan. 2. Pass the sub fan cable in the hole of the chassis. 3. Secure the sub fan with the following screws. • M2.5 × 6 FLAT HEAD screw × 2 Satellite A20 Maintenan ce Manual (960-444) 4-59[...]

4 Replacement Procedures 4.23 PC Card Slot 4.23 PC Card Slot Removing the PC Card Slot To remove the PC card slot, follow the steps below and refer to figure 4-33. 1. Lay the system board face up. 2. Remove the following screws securing the PC card slot. • M2 × 12 BIND screw × 4 M2 × 12 BIND s crew PC Card s lot Figure 4-33 Removing the PC car[...]

4.23 PC Card Slot 4 Replacement Procedures Installing the PC card slot To install the PC card slot, follow the steps below and refer to figure 4-33. 1. Lay the system board face down and seat the PC card slot. 2. Press the PC card slot to connect it to PJ2110. Make sure the connection is secure. 3. Lay the system board face up. 4. Secure the PC car[...]

4 Replacement Procedures 4.24 Speakers 4.24 Speakers Removing the Speakers To remove the speakers, follow the steps below and refer to figures 4-34 and 4-35. 1. Lay the top cover and display assembly face down and remove the insulator. 2. Remove the following screws securing the side covers. • M2.5 × 6 FLAT HEAD screw × 4 M2.5 × 6 FLA T HEAD s[...]

4.24 Speakers 4 Replacement Procedures 3. Remove the two tapes securing the speaker cables. 4. Remove the speakers and speaker cables from their guides. 5. Remove the side speaker (right and left) from the front of the computer. Side cover Figure 4-35 Removing the Side cover Installing the Speakers To install the speakers, follow the steps below an[...]

4 Replacement Procedures 4.25 Touch Pad Switch 4.25 Touch Pad Switch Removing the Touch Pad Switch To remove the touch pad switch, follow the steps below and refer to figure 4-36. 1. Remove the following screws securing the touch pad switch. • M2.5 × 4 TAPPING screw × 3 2. Removing the touch pad switches. M2.5 × 4 T APP ING screw T ouch pad sw[...]

4.26 Display Mask 4 Replacement Procedures 4.26 Display Mask Removing the Display Mask To remove the display mask, follow the steps below and refer to figures 4-37 and 4-38. 1. Remove the two mask seals at the lower part of the display mask. 2. Remove the following screws securing the display mask. • M2.5 × 6 FLAT HEAD screw × 2 M2.5 × 6 FLA T[...]

4 Replacement Procedures 4.26 Display Mask 4. Remove the display mask. Display M ask Figure 4-38 Removing the Display mask (2) Installing the Display Mask To install the display mask, follow the steps below and refer to figures 4-37 and 4-38. 1. Place the display mask in its position. 2. Fasten the latches of the display mask. 3. Secure the display[...]

4.27 FL Inverter 4 Replacement Procedures 4.27 FL Inverter Removing the FL Inverter To remove the FL inverter, follow the steps below and refer to figure 4-39. 1. Remove the following screw securing the FL inverter. • M2 × 6 SUPER FLAT screw × 1 2. Remove the insulator and disconnect the FL cable from the FL inverter. 3. Disconnect the HV cable[...]

4 Replacement Procedures 4.27 FL Inverter Installing the FL Inverter To install the FL inverter, follow the steps below and refer to figure 4-39. 1. Connect the FL cable and the HV cable to the FL inverter. 2. Seat the FL inverter board and stick the insulator on the FL inverter of the FL cable side. 3. Secure the FL inverter with the following scr[...]

4.28 LCD Module 4 Replacement Procedures 4.28 LCD Module NOTE: Be careful not to apply pressure to the ICs along the edge of LCD module. The ICs are easily damaged. NOTE: For environmental reasons, do not throw away a malfunctioning LCD module (or FL). Please follow local ordinances or regulations for its disposal. Removing the LCD Module To remove[...]

4 Replacement Procedures 4.28 LCD Module 5. Disconnect the LCD cable and remove the LCD module. Glass ta pe M2 × 5 SUPER FLA T screw Connector Copper tape (SXGA+ models only) Figure 4-40 Removing the LCD module (1) 4-70 Satellite A20 Main tenance Manual (960-444)[...]

4.28 LCD Module 4 Replacement Procedures 6. Remove the following screw securing the two metal braces to the LCD module. • M2 × 3 SUPER FLAT screw × 4 M2 × 3 SUPER FLA T scr ew M2 × 3 SUPER FLA T scre w LCD module Metal brac e Figure 4-41 Removing the LCD module (2) Satellite A20 Maintenan ce Manual (960-444) 4-71[...]

4 Replacement Procedures 4.28 LCD Module Installing the LCD Module To install the LCD module, follow the steps below and refer to figures 4-40 and 4-41. 1. Secure the two metal braces to the LCD module with the following screws. • M2 × 3 SUPER FLAT screw × 4 2. Lean the LCD module against the lower side of the display cover. 3. Connect the LCD [...]

4.29 Wireless LAN Antenna/Bluetooth Antenna/Di splay Cover 4 Replacement Procedures 4.29 Wireless LAN Antenna/Bluetooth Antenna/Display Cover Removing the Wireless LAN Antenna/Bluetooth Antenna/Display Cover To remove the wireless LAN antenna/Bluetooth antenna/display cover, follow the steps below and refer to figures 4-42 to 4-48. NOTE: When you o[...]

4 Replacement Procedures 4.29 Wireless LAN Antenna/Bluetooth Antenna/Display Cover 2. (For Wireless LAN/Bluetooth models only) Peel off the three acetate tapes securing the wireless LAN antenna cables and Bluetooth antenna cable and remove the wireless LAN antennas and Bluetooth antenna from the display cover. W ireless LAN/Bluetooth antenna cables[...]

4.29 Wireless LAN Antenna/Bluetooth Antenna/Di splay Cover 4 Replacement Procedures 3. Remove the following screw securing the metal plate on the LCD cable and remove the metal plate. • M2.5 × 4 TAPPING screw × 1 M2.5 × 4 T APPING scr ew Metal pla te LCD cable Figure 4-44 Removing the LCD cable (1) Satellite A20 Maintenan ce Manual (960-444) 4[...]

4 Replacement Procedures 4.29 Wireless LAN Antenna/Bluetooth Antenna/Display Cover 4. Turn the display cover face down and remove the insulator. 5. Remove the following screws securing the cable hold plate and cable earth plate. • M2.5 × 6 TAPPING screw × 2 Cable ho ld plate M 2.5 × 6 T APPIN G screw Cable e arth plate Figure 4-45 Removing the[...]

4.29 Wireless LAN Antenna/Bluetooth Antenna/Di splay Cover 4 Replacement Procedures 7. Remove the LCD cable from the display assembly. LCD cable Figure 4-46 Removing the LCD cable (2) Satellite A20 Maintenan ce Manual (960-444) 4-77[...]

4 Replacement Procedures 4.29 Wireless LAN Antenna/Bluetooth Antenna/Display Cover 8. Remove the following screws securing the two hinges to the display cover. • M2.5 × 4 FLAT HEAD screw × 2 • M2.5 × 5 FLAT HEAD screw × 4 M2.5 × 4 FLA T BIND screw M2.5 × 5 FLA T HEAD screw M2.5 × 5 FLA T HEAD scr ew Figure 4-47 Removing the Hinge (1) 4-7[...]

4.29 Wireless LAN Antenna/Bluetooth Antenna/Di splay Cover 4 Replacement Procedures 9. Remove the display cover from the display assembly. 10. Remove the following screws securing the two hinges to the display cover. • M2.5 × 6 FLAT HEAD screw × 4 M2.5 × 6 FLA T HEAD s crew M2.5 × 6 FLA T HEAD sc rew Figure 4-48 Removing the Hinge (2) Satelli[...]

4 Replacement Procedures 4.29 Wireless LAN Antenna/Bluetooth Antenna/Display Cover Installing the Wireless LAN Antenna/Bluetooth Antenna/Display Cover To install the wireless LAN antenna/Bluetooth antenna/display cover, follow the steps below and refer to figures 4-42 to 4-49. 1. Install the two hinges on the hole of the display assembly and secure[...]

4.29 Wireless LAN Antenna/Bluetooth Antenna/Di splay Cover 4 Replacement Procedures Satellite A20 Maintenan ce Manual (960-444) 4-81 3. Pass the LCD cable through the hole from the top of the display assembly toward its bottom. 4. Close the display cover and turn the display assembly face down. 5. Place the cable earth plate first and then place th[...]

4 Replacement Procedure 4.30 Fluorescent Lamp 4 4.30 Fluorescent Lamp This system uses LCD modules from the following suppliers. The procedure for replacing the fluorescent lamp is different for each LCD module. Refer to the appropriate procedure. Type Part No. Supplier Section G33C0000G110 LG.Philips 4.30.1 G33C0000L110 Samsung 4.30.2 G33C0000Q110[...]

4.30 Fluorescent Lamp 4 Replacement Procedure 4.30.1 Replacing the 15.0-inch XGA LG.Philips Fluorescent Lamp CAUTION : When replacing the fluorescent lamp, wear finger covers or gloves to avoid contaminating or damaging the LCD panel. Be careful not to let dust or other foreign substance into the module. Disassembling the 15.0-inch XG A LG.Philips [...]

4 Replacement Procedure 4.30 Fluorescent Lamp Cover sh ield (C) T ape shield A dhesive tape Cover sh ield (G) A dhesive tape Figure 4-50 Replacing LG.Philips fluorescent lamp (XGA) (1) 4-84 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedure 2. Remove the top case. Be careful not to apply excessive force to the top case and gate TCP. To p c a s e Figure 4-51 Replacing LG.Philips fluorescent lamp (XGA) (2) Satellite A20 Maintenance Manual (960-444) 4-85[...]

4 Replacement Procedure 4.30 Fluorescent Lamp 3. Remove the source PCB and gate PCB. 1) Remove the source PCB. Be careful not to apply excessive force to the PCB or TCP when removing the double-sided tape. 2) Remove the gate PCB. Be careful not to apply excessive force to the PCB or TCP when removing the double-sided tape. Source PCB Gate PCB Figur[...]

4.30 Fluorescent Lamp 4 Replacement Procedure 4. Remove the board assembly, adhesive tape, light guide and cover assembly bottom (L). 1) Remove the board assembly. 2) Remove the adhesive tape securing the sheets (four points). 3) Remove the sheets and light guide. NOTE: No penetration of foreign object is indispensable not to scratch the sheets. 4)[...]

4 Replacement Procedure 4.30 Fluorescent Lamp Assembling the 15.0-inch XG A LG.Philips Fluorescent Lamp To assemble the 15.0-inch XGA LG.Philips fluorescent lamp, follow the steps below and refer to figures 4-54 to 4-57. 1. Install the cover assembly bottom (L), sheets, light guide, adhesive tape and board assembly. 1) Remove the protect film from [...]

4.30 Fluorescent Lamp 4 Replacement Procedure Board asse mbly Double-sided tape A dhesive tape Sheets and LGP Double-sided tape A dhesive tape Double-sided tape A dhesive tape Double-s ided tap e A dhesive tape Screw Cover assembly bottom (L) Screw Figure 4-54 Replacing LG.Philips fluorescent lamp (XGA) (5) Satellite A20 Maintenance Manual (960-444[...]

4 Replacement Procedure 4.30 Fluorescent Lamp 2. Install the source PCB and gate PCB. 1) Install the source PCB. NOTE: Be careful not to apply excessive force to the TCP. 2) Install the gate PCB. NOTE: Be careful not to apply excessive force to the TCP. Source PCB Gate PCB Figure 4-55 Replacing LG.Philips fluorescent lamp (XGA) (6) 4-90 Satellite A[...]

4.30 Fluorescent Lamp 4 Replacement Procedure 3. Install the top case. NOTE: Be careful not to apply excessive force to the gate TCP. To p c a s e Figure 4-56 Replacing LG.Philips fluorescent lamp (XGA) (7) Satellite A20 Maintenance Manual (960-444) 4-91[...]

4 Replacement Procedure 4.30 Fluorescent Lamp 4. Stick the outside tape and install the cover shield. 1) Stick the tape shield and adhesive tape to fix the top case. NOTE: Be careful not to apply excessive force to the top case. 2) Install the cover shield (C). NOTE: Be careful not to apply excessive force to the control PCB. CAUTION: Wear anti-sta[...]

4.30 Fluorescent Lamp 4 Replacement Procedure NOTE: Be careful not to apply excessive force to the B/L wire. Cover shield (C) T ape sh ield A dhesive tape Cover shield (G) A dhesi ve ta pe Figure 4-57 Replacing LG.Philips fluorescent lamp (XGA) (8) Satellite A20 Maintenance Manual (960-444) 4-93[...]

4 Replacement Procedure 4.30 Fluorescent Lamp 4.30.2 Replacing the 15.0-inch XGA Samsung Fluorescent Lamp Disassembling the 15.0-inch XGA Samsung Fluorescent Lamp To disassemble the 15.0-inch XGA Samsung fluorescent lam p, follow the steps below and refer to figures4-58 to 4-65. 1. Remove the PCB cover. NOTE: When removing the PCB cover, be careful[...]

4.30 Fluorescent Lamp 4 Replacement Procedure 2. Remove the two screws. Screw Screw Figure 4-59 Replacing Samsung fluorescent lamp (XGA) (2) Satellite A20 Maintenance Manual (960-444) 4-95[...]

4 Replacement Procedure 4.30 Fluorescent Lamp 3. Remove the four screws from the top chassis. Screw Screw Screw Screw Figure 4-60 Replacing Samsung fluorescent lamp (XGA) (3) 4-96 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedure 4. Remove the four bottom hooks and four side hooks (left and right). Then remove the top chassis from the mold fram e. Side hook Side hook Bottom hook Figure 4-61 Replacing Samsung fluorescent lamp (XGA) (4) Satellite A20 Maintenance Manual (960-444) 4-97[...]

4 Replacement Procedure 4.30 Fluorescent Lamp 5. Remove the panel assembly from the mold fram e. NOTE: When removing the panel assembly, be careful not to damage the COF. Panel ass embly Mold frame Figure 4-62 Replacing Samsung fluorescent lamp (XGA) (5) 4-98 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedure 6. Remove the sheets and clips. 1) Remove the two clips fixing the sheets. 2) Remove the sheets (protection sheet, prism sheet (L, U), diffusion sheet, LGP and reflection sheet). Clip Clip Sheets Figure 4-63 Replacing Samsung fluorescent lamp (XGA) (6) Satellite A20 Maintenance Manual (960-444) 4-99[...]

4 Replacement Procedure 4.30 Fluorescent Lamp 7. Remove the lamp back cover. 1) Remove the two screws from the lamp back cover. 2) Remove the lamp back cover. Lamp back co ver Screw Screw Figure 4-64 Replacing Samsung fluorescent lamp (XGA) (7) 4-100 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedure 8. Remove the lamp wire from the wire guide of the mold fram e. Lamp wire Figure 4-65 Replacing Samsung fluorescent lamp (XGA) (8) Satellite A20 Maintenance Manual (960-444) 4-101[...]

4 Replacement Procedure 4.30 Fluorescent Lamp 9. Remove the lamp assembly from the m old frame. Lamp assembly Mold frame Figure 4-66 Replacing Samsung fluorescent lamp (XGA) (9) 4-102 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedure Satellite A20 Maintenance Manual (960-444) 4-103 Assembling the 15.0-inch XG A Samsumg Fluorescent Lamp The assembly procedure of the 15.0-inch XGA Samsung fluorescent lam p is the reverse of the above disassembly procedure.[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 4 4.30.3 Replacing the 15.0-inch XGA Sharp Fluorescent Lamp Disassembling the 15.0-inch XGA Sharp Fluorescent Lamp To disassemble the 15.0-inch XGA Sharp fluorescent lamp, follow the steps below and refer to figures4-67 to 4-76. 1. Turn the LCD module face down, and remove the protection cover S (A), p[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 2. Remove the four screws on the sides. Screw loosening torque: 1.2kg • cm Screw Screw Screw Screw Figure 4-68 Replacing Sharp fluorescent lamp (XGA) (2) Satellite A20 Maintenance Manual (960-444) 4-105[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 3. Turn the LCD module face up and remove the bezel (E). (E) Bezel (1) Rele ase the beze l from the four latches of t he lamp cover . (2) Release the t wo latches (left and right) on the P-chassis. (3) Releas e the hook of the bezel from the l amp cover . < Side vi ew > Hook Figure 4-69 Replacing[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 4. Turn the LCD module face down and remove the two screws fixing the board. Then open the bent portion of the TCP of the board and remove the backlight. Screw Screw Screw loosening torque: 1. 2kg • cm Figure 4-70 Replacing Sharp fluorescent lamp (XGA) (4) Satellite A20 Maintenance Manual (960-444) 4[...]

4 Replacement Procedures 4.30 Fluorescent Lamp Do not hold the edg e. Do not hold th e edge. Raise t he board a nd make this co ndition. Figure 4-71 Replacing Sharp fluorescent lamp (XGA) (5) 4-108 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 5. Turn the LCD module face up and remove the LCD panel (I) from the backlight unit (H). CAUTION: Wear finger sacks or gloves during the work not to soil or scratch the LCD panel or backlight unit. (H) Back ligh t unit (I) L CD pa nel Figure 4-72 Replacing Sharp fluorescent lamp (XGA) (6) Satellite A20[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 6. Turn the backlight unit (H) removed face down and remove the two screws (D) and lamp cover (J). NOTE: Be careful not to scratch or soil the sheets. Scr ew loo senin g torq ue: 1 .2kg • cm (H) Backli ght unit (J) La mp cover (D) Screw (D) Screw Figure 4-73 Replacing Sharp fluorescent lamp (XGA) (7)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 7. Turn the backlight unit face up and remove the upper diffusion sheet (K), lens sheet (L) and light guide (M). NOTE: Be careful not to scratch or soil the removed sheets or light guide to reuse them. Do not remove the reflecti on sheet under the light guide. ( K ) Upper diffusion sheet (L) Lens sheet[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 8. Remove the four double-sided tapes (N, O, P, Q). NOTE: Discard the removed tapes. Do not reuse them. (P) Doubl e-sided tape 3 (Q) Doubl e-sided tape 4 (N) Doubl e-sided tape 1 (O) Doubl e-sided tape 2 Figure 4-75 Replacing Sharp fluorescent lamp (XGA) (9) 4-112 Satellite A20 Main tenance Manual (960[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 9. Turn the backlight unit face down and remove the lamp unit (R) from the P-chassis. CAUTION: When removing the lamp unit, be careful not to break the lamp, or bend the reflection sheet. P-chassis Lamp unit Figure 4-76 Replacing Sharp fluorescent lamp (XGA) (10) Satellite A20 Maintenance Manual (960-4[...]

4 Replacement Procedures 4.30 Fluorescent Lamp Assembling the 15.0-inch XGA Sharp Fluorescent Lamp To assemble the 15.0-inch Sharp XGA fluorescent lamp, follow the steps below and refer to figures 4-77 to 4-89. 1. Stick the four double-sided tapes (N, O, P, Q) on the P-chassis. (P) (Q) (N) (O) Standard for edge of P-chassis Do not make the P-c hass[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 2. Turn the backlight unit face down and install a new lamp unit (R) on the P-chassis. NOTE: When install the lamp unit (R), be careful not to bend or damage the reflection sheet. P-chassis (R) Lamp uni t Figure 4-78 Replacing Sharp fluorescent lamp (XGA) (12) Satellite A20 Maintenance Manual (960-444)[...]

4 Replacement Procedures 4.30 Fluorescent Lamp Z Z Cross-section drawing of Z-Z Install the le ad wire into thi s groove. Install the refl ection sheet a s it is placed inside the reflector . Instal l the lamp unit wit hout float ing. Figure 4-79 Replacing Sharp fluorescent lamp (XGA) (13) 4-116 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 3. Install the lamp cover (J) on the backlight unit and secure it with the two screws (D). (J) Lamp cover (D) Screw (D) Screw Screw tightening torque: 1.0kg • cm Figure 4-80 Replacing Sharp fluorescent lamp (XGA) (14) Satellite A20 Maintenance Manual (960-444) 4-117[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 4. Install the light guide (M) on the backlight unit. Insert the light guide straight not to deform the reflector . (M) Light g uide Backlight unit Figure 4-81 Replacing Sharp fluorescent lamp (XGA) (15) 4-118 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 5. Place the lens sheet (L) and upper diffusion sheet (K) on the backlight unit with light guide. (K) Upper diffusi on sheet (L) Lens sheet (M) Light g uide Make sure there is no dust or scratch. Do not make any s heet over the edge of P-cha ssi s. Figure 4-82 Replacing Sharp fluorescent lamp (XGA) (16[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 6. Place the LCD panel (I) on the backlight unit (H). NOTE: Make sure there is no dust between the LCD panel and backlight unit. If any dust is found, remove it with crepe tape or others which has no remaining of paste. (H) Ba ckligh t unit (I) LCD pa nel Guide rib Guide ri b Guide rib Guide ri b Make [...]

4.30 Fluorescent Lamp 4 Replacement Procedures 7. Bend the TCP attaching to the source board and secure it with the two screws. Do not hold th e ed g e. Do not hold the ed g e. Figure 4-84 Replacing Sharp fluorescent lamp (XGA) (18) Satellite A20 Maintenance Manual (960-444) 4-121[...]

4 Replacement Procedures 4.30 Fluorescent Lamp Screw Screw Figure 4-85 Replacing Sharp fluorescent lamp (XGA) (19) 4-122 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 8. Install the bezel (E) on the lamp cover and hook the four latches on the lamp cover and two latches on the P-chassis. (E) Bezel (2) Lean t he bezel on t he lamp cover without interfe rence with the TCP . (1) Hitch the hook of the bezel on the ri b of the P -chass is. < Side view > Hook (Lamp c[...]

4 Replacement Procedures 4.30 Fluorescent Lamp Make sure of mating of the bezel a nd the r ib of the P-ch assis. Make sure of mating of the bezel an d the l atch o f the P-chas sis. Make sure of mating of the bezel and the latch of the P-chas sis. Figure 4-87 Replacing Sharp fluorescent lamp (XGA) (21) 4-124 Satellite A20 Main tenance Manual (960-4[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 9. Secure the sides of the unit with the four screws. Screw Screw Screw Screw Figure 4-88 Replacing Sharp fluorescent lamp (XGA) (22) Satellite A20 Maintenance Manual (960-444) 4-125[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 10. Stick the protection cover G (B), protecti on cover S (A), fixing tape (C) and fixing tape for lead wire (C). Fit the cover according to the outl ine of the screw . Stick th e tap e acco rding to the outlin e of the LCD module. Make sure the tape does not a pp ear on the side of t he module. Do no [...]

4.30 Fluorescent Lamp 4 Replacement Procedures 4.30.4 Replacing the 15.0-inch XGA CHIMEI Fluorescent Lamp Disassembling the 15.0-inch XGA CHIMEI Fluorescent Lamp To disassemble the 15.0-inch XGA CHIMEI fluorescent lamp, follow the steps below and refer to figures4-90 to 4-95. 1. Remove the CU tape, yellow tape and protector film X. Ta p e CU tape P[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 2. Remove the two screws (B) fixing the X-PCB. Then remove the eight screws (C) fixing the metal frame. Release the two hooks (A). (B) Screw Screw (B) Detail (A) (A) hook (A) hook (C) (C) (C) (C) (C) Screw (C) (C) (C) Figure 4-91 Replacing CHIMEI fluorescent lamp (XGA) (2) 4-128 Satellite A20 Main tena[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 3. Release the latch. NOTE: Remove the metal frame parallel no to damage it. Latch Back light Metal fra me Figure 4-92 Replacing CHIMEI fluorescent lamp (XGA) (3) Satellite A20 Maintenance Manual (960-444) 4-129[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 4. Remove the X-PCB. NOTE: When removing the X-PCB, be careful not to damage the TCP. X-PCB Panel Back light un it Figure 4-93 Replacing CHIMEI fluorescent lamp (XGA) (4) 4-130 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 5. Remove the three spacers from the BEFIII-M diffuser sheet. Remove the DEFIII-M diffuser sheet, BEFIII-T diffuser sheet and two tapes from the backlight unit in order. NOTE: When removing the sheets, be careful not to damage them. Ta pe Ta pe BEFIII-M diffuser sheet Spacer B EMIII-T diffuser sheet LG[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 6. Remove the two screws. Screw Screw Lamp assembly Housing Figure 4-95 Replacing CHIMEI fluorescent lamp (XGA) (6) 4-132 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Satellite A20 Maintenance Manual (960-444) 4-133 Assembling the 15.0-inch XGA CHIMEI fluorescent lamp To assemble procedure of the 15.0-inch XGA CHIMEI fluorescent lamp, follow the reverse steps of the disassembling steps above.[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 4 4.30.5 Replacing the 15.0-inch SXG A+ LG.Philips Fluorescent Lamp CAUTION : When you replace the fluorescent lamp, wear finger covers or gloves to avoid contaminating or damaging the LCD module. Be careful not to let dust or other foreign substances into the LCD module. Disassembling the 15.0-inch SX[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Cove r sh ield ( C) T ape sh ield A dhesive ta pe Cover shield (G) A dhesive tap e Figure 4-96 Replacing LG.Philips fluorescent lamp (SXGA+) (1) Satellite A20 Maintenan ce Manual (960-444) 4-135[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 2. Remove the top case. Be careful not to apply excessive force to the top case or gate TCP. To p c a s e Figure 4-97 Replacing LG.Philips fluorescent lamp (SXGA+) (2) 4-136 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 3. Remove the source PCB and gate PCB. 1) Remove the source PCB. Be careful not to apply excessive force to the PCB or TCP when removing double-sided tape. 2) Remove the gate PCB. Be careful not to apply excessive force to the PCB or TCP when removing double-sided tape. Source PCB Gate PCB Figure 4-98 [...]

4 Replacement Procedures 4.30 Fluorescent Lamp 4. Remove the board assembly, adhesive tape, light guide and cover assem bly bottom (L). 1) Remove the board assembly. NOTE: This process should be made in a clean room to prevent scratch or particle on polarizer or B/L assembly. 2) Remove the adhesive tape fixing the sheets (four points). 3) Remove th[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Board assembly A dhesive ta pe Sheets and li ght guide Double-sid ed tape A dhesive t ape Double-sid ed tape A dhesive ta pe A dhesive t ape Screw Cover assembly bottom (L) Screw Figure 4-99 Replacing LG.Philips fluorescent lamp (SXGA+) (4) Satellite A20 Maintenan ce Manual (960-444) 4-139[...]

4 Replacement Procedures 4.30 Fluorescent Lamp Assembling the 15.0-inch SXGA+ LG.Philips Fluorescent Lamp To assembling the 15.0-inch SXGA+ LG.Philips fluorescent lamp, follow the steps below and refer to figures 4-100 to 4-103. 1. Install the cover assembly bottom (L), sheets, light guide, adhesive tape and board assembly. 1) Remove the protect sh[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Board assembly A dhesive tape Sheets and light guide Double-s ided tape A dhesive tape Double-sided tape A dhesive tap e A dhesive tape Screw Cover assembly bottom (L) Screw Double-sided tape Double-sided tape Figure 4-100 Replacing LG.Philips fluorescent lamp (SXGA+) (5) Satellite A20 Maintenan ce Man[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 2. Install the source PCB and gate PCB. 1) Install the source PCB. Be careful not to apply excessive force to the TCP. 2) Install the gate PCB. Be careful not to apply excessive force to the TCP. Source PCB Gate PCB Figure 4-101 Replacing LG.Philips fluorescent lamp (SXGA+) (6) 4-142 Satellite A20 Main[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 3. Install the top case. Be careful not to apply excessive force to the gate TCP. To p c a s e Figure 4-102 Replacing LG.Philips fluorescent lamp (SXGA+) (7) Satellite A20 Maintenan ce Manual (960-444) 4-143[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 4. Stick the out side tape and cover shield. 1) Install the tape shield and adhesive tape to fix the top case. Be careful not to apply excessive force to the top case. 2) Install the cover shield (C). Be careful not to apply excessive force to the control PCB. CAUTION: Wear anti-static gloves to preven[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 4.30.6 Replacing the 15.0-inch SXGA+ Samsung Fluorescent Lamp Disassembling the 15.0-inch SXGA+ Samsung Fluorescent Lamp CAUTION: When you replace the fluorescent lamp, wear finger covers or gloves to avoid contaminating or damaging the LCD module. Be careful not to let dust or other foreign substances[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 2. Remove the two screws securing the PCB. Screw Screw Figure 4-105 Replacing Samsung fluorescent lamp (SXGA+) (2) 4-146 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 3. Remove the four screws from the top side of the chassis. Screw Screw Screw Screw Figure 4-106 Replacing Samsung fluorescent lamp (SXGA+) (3) Satellite A20 Maintenan ce Manual (960-444) 4-147[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 4. Remove the four bottom hooks and five hooks (left and right). Then remove the top chassis from the mold fram e. CAUTION: When you release hooks on the top chassis, be careful not to apply excessive force to the FL. The FL can be damaged easily. Side ho ok Side hook Bottom hook Figure 4-107 Replacing[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 5. Remove the panel assembly from the mold fram e. Panel ass embly Mold frame Figure 4-108 Replacing Samsung fluorescent lamp (SXGA+) (5) Satellite A20 Maintenan ce Manual (960-444) 4-149[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 6. Remove the two clips. Then remove the five sheets (prism sheet (L, U), diffusion sheet, LGP and reflection sheet). Clip Clip Sheets Figure 4-109 Replacing Samsung fluorescent lamp (SXGA+) (6) 4-150 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 7. Remove the two screws securing the lamp back cover. Then remove the lamp back cover. Lamp back co ver Screw Screw Figure 4-110 Replacing Samsung fluorescent lamp (SXGA+) (7) Satellite A20 Maintenan ce Manual (960-444) 4-151[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 8. Remove the lamp wire from the wire guide of the mold fram e. Lamp wire Figure 4-111 Replacing Samsung fluorescent lamp (SXGA+) (8) 4-152 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 9. Remove the lamp assem bly from the mold fram e. Lamp assembly Mold frame Figure 4-112 Replacing Samsung fluorescent lamp (SXGA+) (9) Satellite A20 Maintenan ce Manual (960-444) 4-153[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 4-154 Satellite A20 Main tenance Manual (960-444) Assembling the 15.0-inch SXGA+Samsung Fluorescent Lamp The assembly procedure is the reverse of the above disassembly procedure.[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 4 4.30.7 Replacing the 15.0-inch SXGA+ Sharp Fluorescent Lamp To disassemble the 15.0-inch SXGA+ Sharp fluorescent lamp, follow the steps below and refer to Figures 4-113 to 4-122. CAUTION: When you replace the fluorescent lamp, wear finger covers or gloves to avoid contaminating or damaging the LCD mo[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 2. Remove the four screws on the sides. Screw loosening torque: 1.1kg • cm Screw Screw Screw Screw Figure 4-114 Replacing Sharp fluorescent lamp (SXGA+) (2) 4-156 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 3. Turn the LCD module face up and remove the bezel (E). (E) Bezel (1) Rel ease the bezel from the four lat ches of the lamp c over . (2) Relea se the t wo latches on the P- chassi s. (3) Relea se th e hook of the beze l fr om th e lamp cov er . < Side view > Hook Figure 4-115 Replacing Sharp flu[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 4. Turn the LCD module face down. Remove the four screws fixing the board and remove the FPC (G). Open the bent portion of the TCP of the board and remove the backlight. Screw Screw Screw Screw (G) FPC Screw looseni ng torq ue: 0.9 kg • cm Open the cap of t he connector a nd remove the FPC. Figure 4-[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Do not hold th e edge. Do not hold th e edge. Raise t he board an d make this co ndit ion. Figure 4-117 Replacing Sharp fluorescent lamp (SXGA+) (5) Satellite A20 Maintenan ce Manual (960-444) 4-159[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 5. Turn the LCD module face up and remove the LCD panel (I) from the backlight unit (H). NOTE: Wear finger sacks or gloves during the work not to soil or scratch the LCD panel or backlight unit. (I) LCD panel (H) Backlight unit Figure 4-118 Replacing Sharp fluorescent lamp (SXGA+) (6) 4-160 Satellite A[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 6. Turn the backlight unit (H) removed face down and remove the two screws (D) and lamp cover (J). NOTE: Be careful not to scratch or soil the sheets. (H) Backlight unit Screw loosening torque: 1.1kg.cm (D) Screw (D) Screw (J) Lamp cover Figure 4-119 Replacing Sharp fluorescent lamp (SXGA+) (7) Satelli[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 7. Turn the backlight unit face up and remove the upper diffusion sheet (K), lens sheet (L) and light guide (M). NOTE: The light guide and sheets are reused. Be careful not to scratch or soil them. Do not remove the reflection sheet under the light guide. (K) Upper diffusion sheet (L) Lens sheet (M) Li[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 8. Remove the four double-sided tapes (N, O, P, Q). NOTE: Discard the removed tapes. Do not reuse them. (P) Doubl e-sided tape 3 (Q) Doubl e-sided tape 4 (N) Doubl e-sided tape 1 (O) Doubl e-sided tape 2 Figure 4-121 Replacing Sharp fluorescent lamp (SXGA+) (9) Satellite A20 Maintenan ce Manual (960-44[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 9. Turn the backlight unit face down and remove the lamp unit (R) from the P-chassis. CAUTION: When removing the lamp unit, be careful not to break the lamp, or bend the reflection sheet. P-Chassis (R) Lamp unit Figure 4-122 Replacing Sharp fluorescent lamp (SXGA+) (10) 4-164 Satellite A20 Main tenance[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Assembling the 15.0-inch SXG A+ Sharp Fluorescent Lamp To assemble the 15.0-inch SXGA+ Sharp fluorescent lamp, follow the steps below and refer to Figures 4-123 to 4-137. 1. Stick the four double-sided tapes (N, O, P, Q) on the P-chassis. (P) (Q) (O) Standa rd for edge of P -chassis Do not make the P-c[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 2. Turn the backlight unit face down and install a new lamp unit (R) on the P-chassis. P-chassis (R) Lamp unit Figure 4-124 Replacing Sharp fluorescent lamp (SXGA+) (12) 4-166 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures NOTE: When install the lamp unit, be careful not to bend or damage the reflection sheet. Z Z Install the lamp unit without floating. Install the reflection sheet as it is placed inside the reflector. Install the lead wire into this groove. Cross-section drawing of Z-Z Figure 4-125 Replacing Sharp fluor[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 3. Install the lamp cover (J) on the backlight unit and secure it with the two screws. (J) Lamp cov er (D) Screw (D) Screw Screw tightening torque: 0.9kg • cm Figure 4-126 Replacing Sharp fluorescent lamp (SXGA+) (14) 4-168 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 4. Install the light guide (M) on the backlight unit. Insert the l ight guide straight not to deform the reflector . (M) Light g uide Backlight unit Figure 4-127 Replacing Sharp fluorescent lamp (SXGA+) (15) Satellite A20 Maintenan ce Manual (960-444) 4-169[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 5. Place the lens sheet (L) and upper diffusion sheet (K) on the backlight unit with light guide. (K) Upper diffusi on sheet (L) Lens sheet (M) Light g uide Make sure there is no dust or scratch. Do not make any s heet over the edge of P-cha ssis Figure 4-128 Replacing Sharp fluorescent lamp (SXGA+) (1[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 6. Place the LCD panel (I) on the backlight unit (H). NOTE: Make sure there is no dust between the LCD panel and backlight unit. If any dust is found, remove it with crepe tape or others which has no remaining of paste. (H) Backlight unit (I) LCD panel Guide ri b Guide rib Guide rib Guide ri b Make sur[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 7. Bend the TCP attaching to the source board and secure it with the two screws. Then bend the TCP attaching to the gate board with the two screws and insert the FPC (G) into the connector of the source board. Do not hold the ed g e. Do not hold the ed g e. Figure 4-130 Replacing Sharp fluorescent lamp[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Screw Screw Screw (G) Fit the pin and the ho le. Screw Fit the pin and t he hole . Do n ot co ver t he projection . Fit the pin and t he hole. Fo ld th e gate boa rd. Screw tightening to rque: 0.9kg • cm Fold the source board . Check the condi tion after mating. *Check t he condit ion of th e concav [...]

4 Replacement Procedures 4.30 Fluorescent Lamp 8. Install the bezel (E) on the lamp cover. Attach the four latches on the lamp cover and two latches on the P-chassis. (E) Bezel (2) Lean t he bezel on the l amp cover without int erference with the TCP . (1) Hit ch the hook of the bezel on the rib of the P-chass is. < Side view > Hook (Lamp cov[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Make sure of mating of the b ezel and the rib of the P-ch assis. Make sure of mat ing of the bezel a nd the latch o f the P-chas sis. Make sure of mating of the bezel and the latch of the P-chassis. Figure 4-133 Replacing Sharp fluorescent lamp (SXGA+) (21) Satellite A20 Maintenan ce Manual (960-444) 4[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 9. Secure the sides of the unit with the four screws. Screw Screw Scre w Screw Figure 4-134 Replacing Sharp fluorescent lamp (SXGA+) (22) 4-176 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 10. Stick the protection cover G (B). (B) Protecti on cover G Outline standard for the gate board Figure 4-135 Replacing Sharp fluorescent lamp (SXGA+) (23) Satellite A20 Maintenan ce Manual (960-444) 4-177[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 11. Stick the protection cover S (A), fixing tape (C), fixing tape for lead wire (D). Fit the cover according to the outline of the screw . Stick the tape ac cording to the outli ne of the module. Make su re the tape does not appea r on the si de of the module . Do not make the tape ov er the to p of t[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Satellite A20 Maintenan ce Manual (960-444) 4-179 0 to 1 mm 0 to 1 mm Standard for the outline of screw (left and right) Standard for the outline of boar d Make sure the edge of plasti c resin is between ± 0.5. Edge of plastic resin Figure 4-137 Replacing Sharp fluorescent lamp (SXGA+) (25)[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 4 4.30.8 Replacing the 14.1-inch XGA TOSHIBA Fluorescent Lamp CAUTION : When you replace the fluorescent lamp, wear finger covers or gloves to avoid contaminating or damaging the LCD module. Be careful not to let dust or other foreign substances into the LCD module. Disassembling the 14.1-inch XGA TOSH[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Removing the screws 1. Spread out the insulation sheet without detaching it from the side of the bezel, as shown in Figure 4-139. 2. In the order (1) and (2) shown in Figure 4-139, remove the screws from the left- and right-hand sides of the module. CAUTION: To unfasten the screws, use an insert bit of[...]

4 Replacement Procedures 4.30 Fluorescent Lamp Removing the bezel 1. Without removing the insulation tape, flip the m odule over again so that the display screen can face up. 2. Release the latches of the bezel and frame. (On the sides, there are five latches in the upper area and two latches in the lower area.) 3. Gently remove the double-sided ta[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Opening the PCB 1. Spread out the PCB horizontally, as shown in Figure 4-141. CAUTION: Use care not to damage the TAB. ‚w‚o‚b‚a‚ð— –Ê‚© ‚çŠJ‚-D 1 Open the X-PCB from the reverse si de. Figure 4-141 Spreading out the PCB horizontally Satellite A20 Maintenan ce Manual (960-444) 4[...]

4 Replacement Procedures 4.30 Fluorescent Lamp Removing the PCB-assembly cell 1. Remove the cell of the PCB assembly from the backlight assembly, as indicated by (1) in Figure 4-142. Completely remove the double-sided tape rem aining on the reverse side of the cell. CAUTION: On the cell, three areas are bonded to the frame with the double-sided tap[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Assembling the 14.1-inch XGA TOSHIBA Fluorescent Lamp To assembling the 14.1-inch XGA TOSHIBA fluorescent lamp, follow the steps below and refer to figures 4-143 to 4-149. Putting the double-sided tapes on the bezel 1. Attach the double-sided tape to the reverse side of the bezel, as shown in Figure 4-[...]

4 Replacement Procedures 4.30 Fluorescent Lamp Checking the backlight 1. Inspect the replacement backlight according to Figure 4-144. æ ‚èã ‚˚‚Ä‚¢‚È‚¢ ‚±‚ÆB ƒtƒŒ[ ƒ ‚É ƒvƒŠƒYƒ ƒV[ ƒg—Þ‚ª æ ‚èã ‚˚‚Ä‚¢‚È ‚¢‚±‚ÆB ƒvƒŠƒYƒ ƒV[ ƒg—Þ‚ªƒtƒŒ[ ƒ ‚É ƒV[ ƒg‚ªƒtƒ?[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Assembling PCB-assembly cell 1. Remove the paper (coated with a mold release) from the double-sided tape in the three areas on the replacement backlight unit. The areas are at the top and on both sides. See Figure 4-145. 2. Turn the backlight on. 3. Check that the backlight is free of dust, foreign obj[...]

4 Replacement Procedures 4.30 Fluorescent Lamp Folding down and temporary fixing of the TAB/PCB 1. Fold down the TAB (PCB) toward the reverse side of the backlight unit, as shown in Figure 4-146. CAUTION: Use care not to damage the TAB. 1 ‚w‚o‚b‚a‚ð— –Ê‚ÉÜ ‚è‹È‚˚D For the X-PCB toward the reverse side. Figure 4-146 Fold[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Setting the bezel 1. Start installing the bezel in the upward direction until it stops at the top left corner. NOTE: The GND-CU and lamp reflector on the left-hand side must not go beyond the edges of the bezel. Use care not to damage the cables and TAB. The bezel latches must be engaged (there are fiv[...]

4 Replacement Procedures 4.30 Fluorescent Lamp Fasten screws of the PCB and bezel 1. Fasten the four screws on the left edge in the order (5), (6), (7), and (8) shown in Figure 4-148. 2. Fasten the four screws on the right edge in the order (1), (2), (3), and (4) shown in Figure 4-148. CAUTION: Fasten the screws in the orders shown in Figure 4-148.[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Attaching the tapes and insulation sheet 1. Attach the PCB insulation sheet (one location). 2. Attach the tape for the bezel to the bottom area close to the lamp (two locations). 3. Attach the tape for fixing the FL tube cable (one location). CAUTION: When attaching tape and insulation sheet, use care [...]

4 Replacement Procedures 4.30 Fluorescent Lamp 4.30.9 Replacing the 14.1-inch XGA Sharp Fluorescent Lamp Disassembling the 14.1-inch XGA Sharp Fluorescent Lamp CAUTION: When you replace the fluorescent lamp, wear finger covers or gloves to avoid contaminating or damaging the LCD module. Be careful not to let dust or other foreign substances into th[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 2. Remove the screws (E) on both sides. The maximu m all owed rel easi ng to rque is 0.10 78N ¥ m (1 . 1k gf ¥ cm). Figure 4-151 Removing the screws from the sides 3. Flip the module over again (with the top of the module facing up) and remove the two latches that are close to the lamp. Lat ch Figure[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 4. Using the U-shaped edge of the bezel as a "hinge," raise the edge of the bezel from which the latches have been removed. Then remove the bezel. Peel off the tape for GND wire fixing (J). U-shaped edge of the bezel Tape for grou nd wire fi xi ng ( J) Figure 4-153 Removing the bezel 5. Flip [...]

4.30 Fluorescent Lamp 4 Replacement Procedures Assembling the 14.1-inch XGA Sharp Fluorescent Lamp To assembling the 14.1-inch XGA Sharp fluorescent lamp, follow the steps below and refer to figures 4-155 to 4-159. 1. Attach the lamp cover (F) and attach the shield tape to the lamp cover after f olding it. Then fix the lamp cover with the two screw[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 3. Fasten the five screws (E) on both sides. Make sure that the two latches are fitting surely. Maxi m u m all owed ti gh t eni ng t or que is 0.1176N m (1.2kgf cm). Lat ch Figure 4-157 Fastening the screws on both sides 4-196 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 4. Attach the protection cover S (A), protection cover G (B), aluminum tape (C), tape for lead fixing (D), and aluminum shield (K). All of which m ust be new ones. Attach the protection cover (A) then cover (B), using the engaging pins as the guide. Fold the ends of the covers toward the side of the be[...]

4 Replacement Procedures 4.30 Fluorescent Lamp 4-198 Satellite A20 Main tenance Manual (960-444) 5. Upon completion of the assembly, perform visual inspections, as shown in Figure 4- 159. Engagement Att ac hmen t Att ach ment Engagement Scre w Scre w Engagement Scre w Engagement Att achm ent Enga gement Engagement Att achm ent Engagement Engagement[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 4 4.30.10 Replacing the 14.1-inch XGA Samsung Fluorescent Lamp CAUTION : When you replace the fluorescent lamp, wear finger covers or gloves to avoid contaminating or damaging the LCD module. Be careful not to let dust or other foreign substances into the LCD module. Disassembling the 14.1-inch XGA Sam[...]

4 Replacement Procedures 4.31 Addendum 2. Remove the two screws for fixing the power supply board. CAUTION: Use care not to damage the PCB. 1 2 Screw Scre w Figure 4-161 Removing the two screws for fixing the power supply board 4-200 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 3. Release the 18 hooks and remove the upper chassis from the frame. There are six hooks at the top, four hooks on each of the left- and right-hand sides, and four hooks at the bottom. 1st 2nd 2nd 3rd T op Hook Side Hook Bottom Hook Figure 4-162 Releasing the 18 hooks Satellite A20 Maintenan ce Manual [...]

4 Replacement Procedures 4.31 Addendum 4. Remove the panel assembly from the backlight assembly. CAUTION: Use care not to damage the TCP during working. P anel assembly Backlight assemb ly Figure 4-163 Removing the panel assembly 4-202 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 5. Remove the two clips. 6. Remove these: • Prism sheet • Diffuser sheet • Light guide plate (LGP) • Reflective sheet Remov e the clip Remov e the clip Sheets Figure 4-164 Removing the panel assembly Satellite A20 Maintenan ce Manual (960-444) 4-203[...]

4 Replacement Procedures 4.31 Addendum 7. Remove the two screws for fixing the back cover of the FL tube. Screws Figure 4-165 Removing the screws for fixing the FL tube back cover 4-204 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures 8. Disconnect the ground wire of the FL tube from the frame. F rame GND wire Hot wire Figure 4-166 Disconnecting the FL tube ground wire Satellite A20 Maintenan ce Manual (960-444) 4-205[...]

4 Replacement Procedures 4.31 Addendum 9. Remove the FL tube from the frame. FL Figure 4-167 Removing the FL tube 4-206 Satellite A20 Main tenance Manual (960-444)[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Assembling the 14.1-inch XGA Samsung Fluorescent Lamp To assembling the 14.1-inch XGA Samsung fluorescent lam p, follow the steps below and refer to figures 4-160 to 4-167. 1. Place the FL tube on the correct location in the frame. 2. Connect the ground wire to the frame. 3. Fix the back cover of the F[...]

4 Replacement Procedures 4.31 Addendum 4.30.11 Replacing the 14.1-inch XGA L.G. Philips Fluorescent Lamp Disassembling the 14.1-inch XG A L.G. Philips Fluorescent Lamp CAUTION: When you replace the fluorescent lamp, wear finger covers or gloves to avoid contaminating or damaging the LCD module. Be careful not to let dust or other foreign substances[...]

4.30 Fluorescent Lamp 4 Replacement Procedures T ape Adhesiv e:7250L-0026U Cov er Shield (C):3550L-0281A Cov er Shield (G):7250L-0154B T ape Adhesiv e:7250L-0026N T ape Adhesiv e:7250L-0026K Figure 4-168 Removing the outside tape/cover tape Satellite A20 Maintenan ce Manual (960-444) 4-209[...]

4 Replacement Procedures 4.31 Addendum Removing the control PCB, top case and cover assembly 6. Remove the FPC cable (1) used for the control PCB connecting. CAUTION : Pressure or stress should not be given on the FPC cable. 7. Remove the control PCB (2). CAUTION : At first, move the control PCB to the left 8. Remove the top case (3) CAUTION : Pres[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Removing the source PCB and gate PCB 10. Remove the source PCB (1). CAUTION : Pressure or stress should not be given on the PCB and TCP during removing double tape. 11. Remove the gate PCB (2). CAUTION : Pressure or stress should not be given on the PCB and TCP during removing double tape. Source PCB G[...]

4 Replacement Procedures 4.31 Addendum Removing the board assembly, tape pad sheet, light guide, cover bottom and lamp assembly 12. Remove the board assembly (1). CAUTION : This process should be made in the clean room with no scratch nor particle on the Polarize and B/L assembly . 13. Remove the tape pad (2) used for sheets fixing. 14. Remove the [...]

4.30 Fluorescent Lamp 4 Replacement Procedures Board Assembly:6060L-C017 Sheets & LGP Screw Scre w Double T ape:7250L-0025E T ape P ad Figure 4-171 Removing the board assembly, tape pad sheet, light guide, cover bottom and lamp assembly Satellite A20 Maintenan ce Manual (960-444) 4-213[...]

4 Replacement Procedures 4.31 Addendum Assembling the 14.1-inch XG A L.G. Philips Fluorescent Lamp To assembling the 14.1-inch XGA L.G. Philips fluorescent lamp, follow the steps below and refer to figures 4-172 to 4-175. Attaching the double tape, lamp assembly, cover bottom, sheets, light guide, tape adhesive and board assembly 1. Attach the lamp[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Board Assembly:6060L-C017 Sheets and LGP Kapton T ape: 7250L-0026Q Screw Scre w Double T ape:7250L-0025E T ape P ad Figure 4-172 Attaching the double tape, lamp assembly , cover bottom, sheets, light guide, tape adhesive and board assembly Satellite A20 Maintenan ce Manual (960-444) 4-215[...]

4 Replacement Procedures 4.31 Addendum Attaching the source PCB and gate PCB 9. Attach the source PCB (1). CAUTION : Stress should not be given on the TCP. 10. Attach the gate PCB (2). CAUTION : Stress should not be given on the TCP. Source PCB Gate PCB Figure 4-173 Attaching the source PCB and gate PCB 4-216 Satellite A20 Main tenance Manual (960-[...]

4.30 Fluorescent Lamp 4 Replacement Procedures Attaching the cover bottom, screw, top case, control PCB and FPC 11. Attach the bottom cover and screw (1). CAUTION : Pressure should not be given on the source TCP. 12. Attach the top case (2). CAUTION : Pressure should not be given on the gate TCP. 13. Attach the control PCB (3). CAUTION : Move the c[...]

4 Replacement Procedures 4.31 Addendum Attaching the outside tape and cover shield 15. Attach the tape adhesive (1) used for B/L wire fixing. CAUTION : Pressure or stress should not be given on the B/L wire fixing. 16. Attach the tape adhesive (2) used for top case fixing. 17. Attach the cover shield (3). CAUTION : Pressure or stress should not be [...]

4.30 Fluorescent Lamp 4 Replacement Procedures T ape Adhesiv e:7250L-0026U Cov er Shield (C):3550L-0281A Cov er Shield (G):7250L-0154B T ape Adhesiv e:7250L-0026K T ape Adhesiv e:7250L-0026N T ape Adhesiv e:7250L-0050A Figure 4-175 Attaching the outside tape and cover shield Satellite A20 Maintenan ce Manual (960-444) 4-219[...]

4 Replacement Procedures 4.31 Addendum 4-220 Satellite A20 Main tenance Manual (960-444) 4.31 Addendum Appropriate Setting of the “SLIDE SWITCH” for the CPUs When installing a CPU, make sure that the “SLIDE SW ITCH” (S1060) is set correctly according to the type of CPU used. 1. When CPU 3.06GHz is used: Set the SLIDE SWITCH to the position [...]

Appendices[...]

Appendices App-ii Satellite A20 Maintenance Manual (960-444)[...]

Appendices Appendix Contents Appendix A Handling the LCD Module .......................................................................... A-1 Appendix B Board Layout .................................................................................................B-1 B.1 System Board Front View ......................................................[...]

Appendices C.19 PJ3003 Speaker (Left) Connector (2-pin) ...........................................................C-17 C.20 PJ4000 USB 0 Connector (4-pin)........................................................................C-17 C.21 PJ4001 USB 1 Connector (4-pin)........................................................................C-18 C.22 P[...]

Appendices Appendix D Keyboard Scan/Character Codes................................................................ D-1 Appendix E Key Layout .....................................................................................................E-1 E.1 United States (US) Keyboard .......................................................................[...]

Appendices Figures Figure B-1 System board layout (front) ...............................................................................1 Figure B-2 System board layout (back) ...............................................................................3 Figure B-3 Sound board layout (front) ......................................................[...]

Appendices Tables Table B-1 System board ICs and connectors (front) ..........................................................2 Table B-2 System board ICs and connectors (back) ...........................................................5 Table B-3 Sound board ICs and connectors (front) ............................................................7 T[...]

Appendices App-viii Satellite A20 Maintenance Manual (960-444) Table C-24 Mini PCI Card interface conn ector pin assignments (124-pin) ...................C-19 Table C-25 Network interface connector pin assignments (8-pin) .................................C-21 Table C-26 IEEE1394 interface connector pin assignments (4-pin) ..........................[...]

Appendix A Handling the LCD Module Appendices 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. Observe the following precautions when handling the LCD module: 1. When installing the LCD module in the LCD cover, be sure to seat it so that it is[...]

Appendices Appendix A Handling the LCD module 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.[...]

Appendix A Handling the LCD Module Appendices 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 damage from electrostatic discharge. Be sure to wear a wrist or ankle ground when handling the module. Satellite[...]

Appendices Appendix A Handling the LCD module 7. Do not expose the module to direct sunlight or strong ultraviolet rays for long periods. 8. Do not store the module at temperatures below specifications. Cold can cause the liquid crystals to freeze, lose their elasticity or otherwise suffer damage. A-4 Satellite A20 Maintenance Manual (960-444)[...]

Appendix A Handling the LCD Module Appendices 9. Do not disassemble the LCD module. Disassembly can cause m alfunctions. 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 A20 Mainten[...]

Appendices Appendix A Handling the LCD module A-6 Satellite A20 Maintenance Manual (960-444)[...]

Appendix B Board Layout Appendices Appendix B Board Layout B.1 System Board Front View Figure B-1 System board layout (front) Satellite A20 Maintenance Manual (960-444) B-1[...]

Appendices Appendix B Board Layout Table B-1 System board layout (front) Mark Number Name (A) IC2100 PC Card Power Switch MIC2563A (B) IC5640 TV encoder TVxpress2 (C) IC8972 PSC TMP87PM48V (D) PJ1400 SO-DIMM slot 0 (E) PJ1401 SO-DIMM slot 1 (F) PJ2010 Debug port (G) PJ2200 Mini PCI slot (H) PJ3030 Bluetooth I/F connector (I) PJ3230 Keyboard I/F con[...]

Appendix B Board Layout Appendices B.2 System Board Back View Figure B-2 System board layout (back) Satellite A20 Maintenance Manual (960-444) B-3[...]

Appendices Appendix B Board Layout Table B-2 System board layout (back) Mark Number Name (A) IC1000 Clock Generator ICS951104 (B) IS1050 CPU Socket (C) IC1150 Thermal Sensor ADM1032AR (D) IC1200 North Bridge M1672 (E) IC1600 South Bridge M1535+ (F) IC1671 RTC bq3285LDSS (G) IC1690 BIOS ROM MF400A (H) IC1810 CD Play Controller OZ168 (I) IC2000 YEBIS[...]

Appendix B Board Layout Appendices B.3 Sound Board Front View Figure B-3 Sound board layout (front) Table B-3 Sound board layout (front) Mark Number Name (A) IC6000 Sound CODEC AD1981B (B) X6000 24.576MHz clock (for AD1981B) Satellite A20 Maintenance Manual (960-444) B-5[...]

Appendices Appendix B Board Layout B.4 Sound Board Back View Figure B-4 Sound board layout (back) B-6 Satellite A20 Maintenance Manual (960-444)[...]

Appendix B Board Layout Appendices Table B-4 Sound board layout (back) Mark Number Name (A) PJ2130 SD Card Slot (B) PJ3010 MDC I/F connector (C) PJ6000 External Microphone jack (D) PJ6001 Line In jack (E) PJ6004 Headphone jack (F) PJ9600 System board (FSNAM*) I/F connector (G) PJ9601 System board (FSNAM*) I/F connector (H) DS2120 SD Card LED (I) VR[...]

Appendices Appendix B Board Layout B-8 Satellite A20 Maintenance Manual (960-444) B.5 USB Board Front and Back View Figure B-5 USB board layout (front/back) Table B-5 USB board ICs and connectors (front/back) Mark Number Name (A) PJ9610 System board (FSNAM*) I/F connector (B) IC3520 FIR module (C) DS3270 Wireless communication LED (D) S3270 Wireles[...]

Apx.C Pin Assignments Appendices Satellite A20 Maintenance Manual (960-444) C-1 Appendix C Appendix C Pin Assignments System Board FSNAM* C.1 PJ1400 Memory 1 Connector (200-pin) Table C-1 PJ1400 Memory 1 connector pin assignments (200-pin) (1/3) Pin No. Signal name I/O Pin No. Signal name I/O 1 MR1R25-B1V - 2 MR1R25-B1V - 3 GND - 4 GND - 5 SDQ01R-B[...]

Appendices Apx.C Pin Assignments C-2 Satellite A20 Maintenance Manual (960-444) Table C-1 PJ1400 Memory 1 connector pin assignments (200-pin) (2/3) Pin No. Signal name I/O Pin No. Signal name I/O 63 GND - 64 GND - 65 SDQ28R-B2P I/O 66 SDQ26R-B2P I/O 67 SDQ24R-B2P I/O 68 SDQ27R-B2P I/O 69 2R5-B2V - 70 2R5-B2V - 71 SCB0R-B2P I/O 72 SCB4R-B2P I/O 73 S[...]

Apx.C Pin Assignments Appendices Satellite A20 Maintenance Manual (960-444) C-3 Table C-1 PJ1400 Memory 1 connector pin assignments (200-pin) (3/3) Pin No. Signal name I/O Pin No. Signal name I/O 137 GND - 138 GND - 139 SDQ33R-B2P I/O 140 SDQ39R-B2P I/O 141 SDQ41R-B2P I/O 142 SDQ46R-B2P I/O 143 2R5-B2V - 144 2R5-B2V - 145 SDQ42R-B2P I/O 146 SDQ40R-[...]

Appendices Apx.C Pin Assignments C-4 Satellite A20 Maintenance Manual (960-444) C.2 PJ1401 Memory 2 Connector (200-pin) Table C-2 PJ1401 Memory 2 connector pin assignments (200-pin) (1/3) Pin No. Signal name I/O Pin No. Signal name I/O 1 MR1R25-B1V - 2 MR1R25-B1V - 3 GND - 4 GND - 5 SDQ01R-B2P I/O 6 SDQ06R-B2P I/O 7 SDQ00R-B2P I/O 8 SDQ02R-B2P I/O [...]

Apx.C Pin Assignments Appendices Satellite A20 Maintenance Manual (960-444) C-5 Table C-2 PJ1401 Memory 2 connector pin assignments (200-pin) (2/3) Pin No. Signal name I/O Pin No. Signal name I/O 73 SCB1R-B2P I/O 74 SCB5R-B2P I/O 75 GND - 76 GND - 77 SDQS8R-B2P I/O 78 SDQM8R-B2P O 79 SCB2R-B2P I/O 80 SCB6R-B2P I/O 81 2R5-B2V - 82 2R5-B2V - 83 SCB3R[...]

Appendices Apx.C Pin Assignments C-6 Satellite A20 Maintenance Manual (960-444) Table C-2 PJ1401 Memory 2 connector pin assignments (200-pin) (3/3) Pin No. Signal name I/O Pin No. Signal name I/O 149 GND - 150 GND - 151 SDQ44R-B2P I/O 152 SDQ47R-B2P I/O 153 SDQ45R-B2P I/O 154 SDQ43R-B2P I/O 155 2R5-B2V - 156 2R5-B2V - 157 2R5-B2V - 158 SCK5-P2N O 1[...]

Apx.C Pin Assignments Appendices Satellite A20 Maintenance Manual (960-444) C-7 C.3 PJ1800 HDD Interface Connector (44-pin) Table C-3 HDD interface connector pin assignments (44-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 IDRSTA-P5N I 2 GND - 3 PDD07-P3P I/O 4 PDD08-P3P I/O 5 PDD06-P3P I/O 6 PDD09-P3P I/O 7 PDD05-P3P I/O 8 PDD10-P3P I/O [...]

Appendices Apx.C Pin Assignments C-8 Satellite A20 Maintenance Manual (960-444) C.4 PJ1820 ODD Interface Connector (50-pin) Table C-4 ODD interface connector pin assignments (50-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 CDAUDL-EXP I 2 CDAUDR-EXP I 3 CD-GND - 4 NC - 5 IDRSTB-E5N O 6 SDD08-E5P I/O 7 SDD07-E5P I/O 8 SDD09-E5P I/O 9 SDD06-[...]

Apx.C Pin Assignments Appendices Satellite A20 Maintenance Manual (960-444) C-9 C.6 PJ2110 PC Card Interface Connector (68-pin) Table C-6 PC-Card interface connector pin assignments (68-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 GND - 2 ACAD00-BYP I/O 3 ACAD01-BYP I/O 4 ACAD03-BYP I/O 5 ACAD05-BYP I/O 6 ACAD07-BYP I/O 7 ACCBE0-BYN I/O 8[...]

Appendices Apx.C Pin Assignments C-10 Satellite A20 Maintenance Manual (960-444) C.7 PJ2200 Mini PCI Card Interface Connector (124-pin) Table C-7 Mini PCI card interface connector 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 [...]

Apx.C Pin Assignments Appendices Satellite A20 Maintenance Manual (960-444) C-11 Table C-7 Mini PCI interface connector pin assignments (124-pin) (2/2) Pin No. Signal name I/O Pin No. Signal name I/O 71 PERR-P3N O 72 DEVSEL-P3N O 73 CBE1-P3N I 74 GND - 75 AD14-P3P I/O 76 AD15-P3P I/O 77 GND - 78 AD13-P3P I/O 79 AD12-P3P I/O 80 AD11-P3P I/O 81 AD10-[...]

Appendices Apx.C Pin Assignments C-12 Satellite A20 Maintenance Manual (960-444) C.8 PJ4900 Bluetooth Interface Connector (20-pin) Table C-8 Bluetooth interface connector pin assignments (20-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 GND - 2 NC - 3 BTMDL-P3N O 4 NC - 5 NC - 6 NC - 7 NC - 8 BTRST-S3N I 9 NC - 10 NC - 11 GND - 12 NC - 13 [...]

Apx.C Pin Assignments Appendices Satellite A20 Maintenance Manual (960-444) C-13 C.10 PJ3240 Touch Pad Interface Connector (8-pin) Table C-10 Touch Pad interface connector pin assignments (8-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 GND - 2 GND - 3 GND - 4 NC - 5 IPDCLK-P5P I/O 6 IPDDAT-P5P I/O 7 P5V - 8 P5V - C.11 PJ3260 Membrane inte[...]

Appendices Apx.C Pin Assignments C-14 Satellite A20 Maintenance Manual (960-444) C.12 PJ3510 Parallel Interface Connector (25-pin) Table C-12 Parallel interface connector pin assignments (25-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 STROB-P5N O 2 PDB00-P5P I/O 3 PDB01-P5P I/O 4 PDB02-P5P I/O 5 PDB03-P5P I/O 6 PDB04-P5P I/O 7 PDB05-P5P [...]

Apx.C Pin Assignments Appendices Satellite A20 Maintenance Manual (960-444) C-15 C.14 PJ4600 USB Connector (12-pin) Table C-14 USB connector pin assignments (12-pin) Pin No. Signal name I/O Pin No. Signal name I/O A1 USBP0V-E5V I A2 USBDM1-B3N O A3 USBDP1-B3P I/O A4 GND - B1 USBP0V-E5V I B2 USBDM3-B3N O B3 USBDP3-B3P I/O B4 GND - C1 USBP1V-E5V I C2[...]

Appendices Apx.C Pin Assignments C-16 Satellite A20 Maintenance Manual (960-444) C.16 PJ5601 LCD 1 Interface Connector (20-pin) Table C-16 LCD 1 interface connector pin assignments (20-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 GND - 2 GND - 3 TXCK0-B3N O 4 TXCK0-B3P O 5 TXDT0-B3N O 6 TXDT0-B3P O 7 TXDT1-B3N O 8 TXDT1-B3P O 9 TXDT2-B3N [...]

Apx.C Pin Assignments Appendices Satellite A20 Maintenance Manual (960-444) C-17 C.19 PJ8770 Fan 0 Interface Connector (3-pin) Table C-19 Fan 0 interface connector pin assignments (3-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 FANVCC O 2 GND - 3 FANG1-P3P I C.20 PJ8800 DC-IN Connector (4-pin) Table C-20 DC-IN connector pin assignments (4[...]

Appendices Apx.C Pin Assignments C-18 Satellite A20 Maintenance Manual (960-444) C.23 PJ9510 FSNAS* Boar d Interface Connector (18-pin) Table C-23 FSNAS* board interface connector pin assignments (18-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 P3V - 2 P3V - 3 P3V - 4 NC - 5 B3V - 6 B3V - 7 SNDON-S5N O 8 GND - 9 NC - 10 SND-GND - 11 SND-G[...]

Apx.C Pin Assignments Appendices Satellite A20 Maintenance Manual (960-444) C-19 C.24 PJ9511 Sound Board 1 Interface Connector (50-pin) Table C-24 Sound board 1 interface connector pin assignments (50-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 GND - 2 SPKOTR-EXN I 3 SPKOTR-EXN I 4 SPKOTR-EXP I 5 SPKOTR-EXP I 6 GND - 7 SPKOTL-EXP I 8 SPK[...]

Appendices Apx.C Pin Assignments C-20 Satellite A20 Maintenance Manual (960-444) C.26 PJ9513 Speaker (Left) Connector (2-pin) Table C-26 Speaker (Left) Connector pin assignments (2-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 SPKOTL-EXP O 2 SPKOTL-EXN O C.27 PJ9900 Fan 1 Interface Connector (3-pin) Table C-27 Fan 1 interface connector pin[...]

Apx.C Pin Assignments Appendices Satellite A20 Maintenance Manual (960-444) C-21 Sound Board FSNAS* C.29 PJ2130 SD Card Interface Connector (12-pin) Table C-29 SD card interface connector pin assignments (12-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 SDAT3-B3P I/O 2 SDCMD-B3P O 3 GND - 4 SD-B3V - 5 SDCLK-B3P O 6 GND - 7 SDAT0-B3P I/O 8 [...]

Appendices Apx.C Pin Assignments C-22 Satellite A20 Maintenance Manual (960-444) C.31 PJ6000 External Microphone Connector (6-pin) Table C-31 External microphone connector pin assignments (6-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 A-GND - 2 MICIN-PXP O 3 REFV-P2V - 4 A-GND - 5 NC - 6 A-GND - C.32 PJ6001 Line IN Connector (6-pin) Tabl[...]

Apx.C Pin Assignments Appendices Satellite A20 Maintenance Manual (960-444) C-23 C.34 PJ9600 System Board 1 Interface Connector (50-pin) Table C-34 System Board 1 interface connector pin assignments (50-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 GND - 2 SPKOTR-EXN O 3 SPKOTR-EXN O 4 SPKOTR-EXP O 5 SPKOTR-EXP O 6 GND - 7 SPKOTL-EXP O 8 S[...]

Appendices Apx.C Pin Assignments C-24 Satellite A20 Maintenance Manual (960-444) C.35 PJ9601 Sound Board 2 Interface Connector (18-pin) Table C-35 Sound board 2 interface connector pin assignments (18-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 P3V - 2 P3V - 3 P3V - 4 NC - 5 B3V - 6 B3V - 7 SNDON-S5N O 8 GND - 9 NC - 10 SND-GND - 11 SND-[...]

Apx.C Pin Assignments Appendices Satellite A20 Maintenance Manual (960-444) C-25 FIR Board FSNAF* C.36 PJ2902 System Board 2 Interface Connector (18-pin) Table C-36 System Board 2 interface connector pin assignments (18-pin) Pin No. Signal name I/O Pin No. Signal name I/O 1 S3V - 2 BTSWON-S3P - 3 P5V - 4 BTLED-S3P - 5 GND - 6 GND - 7 FIRMDL-P3N I 8[...]

Appendices Apx.C Pin Assignments C-26 Satellite A20 Maintenance Manual (960-444)[...]

Appendix D Keyboard Scan/Character codes Appendices Satellite A20 Maintenance Manual (960-444) 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 [...]

Appendices Appendix D Keyboard Scan/Character Codes D-2 Satellite A20 Maintenance Manual (960-444) 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 A[...]

Appendix D Keyboard Scan/Character Codes Appendices Satellite A20 Maintenance Manual (960-444) 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 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 75 Ins E0 52 E0 D2 E0 70 [...]

Appendices Appendix D Keyboard Scan/Character Codes D-4 Satellite A20 Maintenance Manual (960-444) 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 *7 202 Fn — — — — *4 203 Win E0 5[...]

Appendix D Keyboard Scan/Character Codes Appendices Satellite A20 Maintenance Manual (960-444) 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[...]

Appendices Appendix D Keyboard Scan/Character Codes D-6 Satellite A20 Maintenance Manual (960-444) 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 E[...]

Appendix D Keyboard Scan/Character Codes Appendices Satellite A20 Maintenance Manual (960-444) 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 (–) [...]

Appendices Appendix D Keyboard Scan/Character Codes D-8 Satellite A20 Maintenance Manual (960-444) Table D-7 No.126 key scan code Code set 1 Code set 2 Key top Shift Make Make Pause Co mm o n * 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 Key Layout Appendices Satellite A20 Maintenance Manual (960-444) E-1 E Appendix E Key Layout E.1 United States (US) Keyboard Figure E-1 US keyboard E.2 United Kingdom (UK) Keyboard Figure E-2 UK keyboard[...]

Appendices Appendix E Key Layout E-2 Satellite A20 Maintenance Manual (960-444) E.3 German (GR) Keyboard Figure E-3 GR keyboard E.4 French (FR) Keyboard Figure E-4 FR keyboard[...]

Appendix E Key Layout Appendices Satellite A20 Maintenance Manual (960-444) E-3 E.5 Spanish (SP) Keyboard Figure E-5 SP keyboard E.6 Italian (IT) Keyboard Figure E-6 IT keyboard[...]

Appendices Appendix E Key Layout E-4 Satellite A20 Maintenance Manual (960-444) E.7 Scandinavian (SC) Keyboard Figure E-7 SC keyboard E.8 Swiss-German (SL) Keyboard Figure E-8 SL keyboard[...]

Appendix E Key Layout Appendices Satellite A20 Maintenance Manual (960-444) E-5 E.9 Canadian (CS) Keyboard Figure E-9 CS keyboard[...]

Appendices Appendix E Key Layout E-6 Satellite A20 Maintenance Manual (960-444)[...]

Appendix F Wiring Diagrams Appendices Appendix F Appendix F Wiring Diagrams F.1 Parallel Port Wraparound Connector -SELECT Figure F-1 Parallel port wraparound connector F.2 RJ45 Wraparound Connector (1) TDP (2) TDN (3) RDP (6) RDN Figure F-2 RJ45 wraparound connector Satellite A20 Maintenance Manual (960-444) F-1[...]

Appendices Appendix F Wiring Diagrams F-2 Satellite A20 Maintenance Manual (960-444)[...]

Appendix G BIOS Rewrite Procedures Appendices Appendix G Appendix G BIOS Rewrite Procedures This Appendix explains how to rewrite the system BIOS program when you update the system BIOS. Tools To rewrite the BIOS, you need the following tool:  BIOS/EC/KBC rewriting disk for the com puter that has renewed BIOS data. Rewriting the BIOS 1. Set the [...]

Appendices Appendix G BIOS Rewrite Procedures G-2 Satellite A20 Maintenance Manual (960-444)[...]

Appendix H EC/KBC Rewrite Procedures Appendices Appendix H Appendix H EC/KBC Rewrite Procedures This Appendix explains how to rewrite the EC/KBC system program when you update the EC/KBC system. Tools To rewrite the EC/KBC, you need the following tool:  BIOS/EC/KBC rewriting disk for the computer Rewriting the EC/KBC NOTE: 1. Rewrite the EC/KBS [...]

Appendices Appendix H EC/KBC Rewrite Procedures H-2 Satellite A20 Maintenance Manual (960-444)[...]

Appendix I Reliability Appendices Appendix I Appendix I Reliability The following table shows MTBF (Mean Time Between Failures) for each component. Table I-1 MTBF Component Time (hours) LCD 50,000 Keyboard 40,000 HDD 300,000 USB FDD 43,800 DVD-RAM drive 60,000 CD-RW/DVD-ROM drive 60,000 AC adaptor 20,000 Satellite A20 Maintenance Manual (960-444) I[...]

Appendices Appendix I Reliability I-2 Satellite A20 Maintenance Manual (960-444)[...]