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File No. 960-140

1 Toshiba Personal Computer

reproduced in any form without the prior written permission of Toshiba. No patent liability is assumed with

respect to the use of the information contained herein.

Toshiba Libretto 100CT Maintenance Manual

First edition February 1998

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The information contained in this manual is subject to change without notice.

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incurred directly or indirectly from errors, omissions, or discrepancies in connection with the furnishing,

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Summary of content (236 pages)

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File No. 960-140 1 Toshiba Personal Computer Copyright © 1998 by Toshiba Corporation. All rights reserved. Under the copyright laws, this manual cannot be reproduced in any form without the prior written permission of Toshiba. No patent liability is assumed with respect to the use of the information contained herein. Toshiba Libretto 100CT Maintenance Manual First edition February 1998 Disclaimer The information contained in this manual is subject to change without notice.
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File No. 960-140 Preface This maintenance manual describes how to perform hardware service maintenance for the Toshiba Personal Computer Libretto 100CT. The procedures described in this manual are intended to help service technicians isolate faulty Field Replaceable Units (FRUs) and replace them in the field. SAFETY PRECAUTIONS Four types of messages are used in this manual to bring important information to your attention. Each of these messages will be italicized and identified as shown below.
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File No. 960-140 The manual is divided into the following parts: Chapter 1 Hardware Overview describes the system unit and each FRU. Chapter 2 Troubleshooting Procedures explains how to diagnose and resolve FRU problems. Chapter 3 Tests and Diagnostics describes how to perform test and diagnostic operations for maintenance service. Chapter 4 Replacement Procedures describes the removal and replacement of the FRUs.
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File No. 960-140 Conventions This manual uses the following formats to describe, identify, and highlight terms and operating procedures. Acronyms On the first appearance and whenever necessary for clarification, acronyms are enclosed in parentheses following their definition. For example: Read Only Memory (ROM) Keys Keys are used in the text to describe many operations. The keytop symbol, as it appears on the keyboard, is printed in boldface type.
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File No. 960-140 Table of Contents Chapter 1 Hardware Overview 1.1 Features..................................................................................................................1-1 1.2 System Unit Block Diagram....................................................................................1-5 1.3 3.5-inch External FDD............................................................................................1-9 1.4 2.5-inch Hard Disk Drive...........................................
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File No. 960-140 3.7 Display Test..........................................................................................................3-16 3.8 Floppy Disk Test ..................................................................................................3-20 3.9 Printer Test...........................................................................................................3-22 3.10 Async Test..............................................................................................
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File No. 960-140 4.13 I/O Adapter Board................................................................................................4-35 Appendices Appendix A Handling the LCD Module ......................................................................... A-1 Appendix B Board Layout.............................................................................................B-1 Appendix C Pin Assignments.........................................................................................
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File No. 960-140 Chapter 1 Contents 1.1 Features..................................................................................................................1-1 1.2 System Unit Block Diagram....................................................................................1-5 1.3 3.5-inch External FDD............................................................................................1-9 1.4 2.5-inch Hard Disk Drive......................................................................
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File No. 960-140 Tables Table 1-1 3.5-inch FDD specifications...............................................................................1-9 Table 1-2 2.5-inch HDD specifications..............................................................................1-9 Table 1-3 LCD specifications...........................................................................................1-12 Table 1-4 FL inverter board specifications.......................................................................
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File No. 960-140 1 Features 1.1 Features The computer uses Toshiba's advanced Large Scale Integration (LSI), and Complementary Metal-Oxide Semiconductor (CMOS) technology extensively to provide compact size, minimum weight, low power usage and high reliability. This computer incorporates the following features and benefits: Microprocessor The computer is equipped with an Intel® Pentium® processor with MMX Technology that operates at 166MHz and 1.8/2.5 volts.
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File No. 960-140 Universal Serial Bus (USB) The USB enables daisy-chain connection of up to 127 USB-equipped devices and 12Mbps serial data transfer. It is designed for easy configuration by a PnP operating system and provides hot insertion/ejection capability. The USB port is only on the Enhanced Port Replicator. External monitor port The port is available only on the I/O adapter and enables connection of an external SVGA compatible monitor.
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File No. 960-140 External FDD A 3.5-inch external FDD is connected to the PC card slot and accommodates both 2HD (1.44MB) and 2DD (720KB) disks.
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File No. 960-140 The computer is shown in Figure 1-1. The system unit configuration is shown in Figure 12.
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File No. 960-140 1.2 System Unit Block Diagram Figure 1-3 is a block diagram of the system unit.
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File No. 960-140 The system unit is composed of the following major components: Intel Pentium processor Intel 166MHz Pentium processor with MMX Technology. The math co-processor and 32KB cache memory are integrated into the Pentium. Standard RAM • • • • • 32 MB, four 4M x 16-bit EDO DRAM chips 3.
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File No. 960-140 Sound Controller • • 1-8 One OPL3-SA3 is used. The OPL3-SA3 incorporates OPL3 FM synthesizer, Digital Analog Converter (DAC) and MPU401 MIDI interface.
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File No. 960-140 1.3 3.5-inch External FDD The 3.5inch external FDD is a thin, high performance reliable drive that supports 720KB (formatted) 2DD and 1.44MB (formatted) 2HD disks. The FDD can be connected to the PC card slot. The FDD is shown in Figure 1-4. The specifications for the FDD are listed in Table 1-1. Figure 1-4 3.5-inch FDD Table 1-1 3.
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File No. 960-140 1.4 2.5-inch Hard Disk Drive The removable HDD is a random access non-volatile storage device. It has a nonremovable 2.5-inch magnetic disk and mini-Winchester type magnetic heads. The computer supports 2.1GB HDD or 3.2GB HDD. The HDD is shown in Figure 1-5. Specifications are listed in Table 1-2. Figure 1-5 2.5-inch HDD Table 1-2 2.
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File No. 960-140 1.5 Keyboard The 84-(USA) or 86-(European) key keyboard is mounted on the system unit. The keyboard is connected to the keyboard controller on the system board through a 24-pin flat cable. The keyboard is shown in Figure 1-6. See Appendix E for optional keyboard configurations.
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File No. 960-140 1.6 TFT Color LCD The display panel contains a TFT color LCD module, a fluorescent lamp (FL) andan FL inverter board. 1.6.1 TFT Color LCD Module The LCD enables display of up to 256K colors at a resolution 800 x 480 pixels. The LCD is shown in Figure 1-7. Specifications are listed in Table 1-3. Figure 1-7 TFT color LCD Table 1-3 LCD specifications Items Number of Pixels Dot pitch (mm) Display area Contrast 1-12 (pixels) (mm) Specifications 800x480 0.192x0.192 153.6(H)x92.
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File No. 960-140 1.6.2 FL Inverter Board The FL inverter board supplies high frequency current to light the LCD’s Fluorescent Lamp. Specifications for the FL inverter are listed in Table 1-4. Table 1-4 FL inverter board specifications Item Specifications Input Voltage Power (V) (W) Output Voltage Current (Vrms) (mA) *NOTE: The FL currents at power on are: Level 3 : 3.5mA Level 2 : 2.9mA 5 2.3 800 2.0 to 3.5* Level 1 : 2.6mA Level 0 : 2.
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File No. 960-140 1.7 Power Supply The power supply supplies ten kinds of voltages to the system board, has one microprocessor and it operates at 4MHz. It performs the following functions: 1. Determines if the AC adapter or battery is connected to the computer. 2. Detects DC output and circuit malfunctions. 3. Controls the battery icon, and DC IN icon. 4. Turns the battery charging system on and off and detects a fully charged battery. 5. Determines if the power can be turned on and off. 6.
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File No. 960-140 The power supply output rating is specified in Table 1-5. Table 1-5 Power supply board output rating Power supplied Yes/No Use Name Voltage(V) Suspend Power off No battery CPU +1.8V 1.8 NO NO NO CPU, CLKGEN, System Controller GA +2.5V 2.5 NO NO NO CLKGEN +3.3V 3.3 NO NO NO System Controller GA, PC Card Slot, VGA Controller, I/O & PC Card Controller GA, DRAM B3V 3.3 YES NO NO VGA Controller, PC Card Slot B5V 5.
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File No. 960-140 1.8 Batteries The computer has tow types of batteries: Main battery pack RTC battery The battery specifications are listed in Table 1-6. Table 1-6 Battery specifications Battery name Material Output voltage Capacity Main battery Lithium-Ion 10.8 V 1,200 mAh 2,400 mAh (High capacity) RTC battery Nickel Metal Hydride 2.4 V 11 mAh 1.8.1 Main Battery The removable main battery pack is the computer’s main power source when the Universal AC Adapter is not connected.
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File No. 960-140 1.8.3 Battery Charging Control Battery charging is controlled by a power supply microprocessor that is mounted on the system board. The microprocessor controls whether the charge is on or off and detects a full charge when the Universal AC Adapter and battery are connected to the computer. The system charges the battery using quick charge or trickle charge.
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File No. 960-140 Chapter 2 Contents 2.1 Troubleshooting......................................................................................................2-1 2.2 Troubleshooting Flowchart.....................................................................................2-2 2.3 Power Supply Troubleshooting...............................................................................2-6 2.4 2.5 2.6 2.7 Procedure 1 Power Status Check..........................................................
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File No. 960-140 2.8 2.9 Pointing Device Troubleshooting..........................................................................2-36 Procedure 1 Diagnostic Test Program Execution Check.........................2-36 Procedure 2 Connector and Replacement Check ....................................2-36 Display Troubleshooting.......................................................................................2-37 Procedure 1 Diagnostic Test Program Execution Check.........................
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File No. 960-140 1 1.1 Troubleshooting Chapter 2 describes how to determine if a Field Replaceable Unit (FRU) in the computer is causing the computer to malfunction. The FRUs covered are: 1. System Board 4. Hard Disk Drive 2. FL Inverter Board 5. Keyboard 3. Floppy Disk Drive 6. Display 7. Pointing Board The Diagnostics Disk operations are described in Chapter 3. Detailed replacement procedures are given in Chapter 4.
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File No. 960-140 1.2 Troubleshooting Flowchart Use the flowchart in Figure 2-1 as a guide for determining which troubleshooting 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 password.
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File No. 960-140 Figure 2-1 Troubleshooting flowchart (2/2) If the diagnostics program cannot detect an error, the problem may be intermittent. The Running Test program should be executed several times to isolate the problem. Check the Log Utilities function to confirm which diagnostic test detected an error, then perform the appropriate troubleshooting procedures as follows: 1.
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File No. 960-140 4. If an error is detected on the keyboard test, perform the Keyboard Troubleshooting Procedures in Section 2.7. 5. If an error is detected on the display test, perform the Display Troubleshooting Procedures in Section 2.9.
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File No. 960-140 1.3 Power Supply Troubleshooting The power supply controls many functions and components. To determine if the power supply is functioning properly, start with Procedure 1 and continue with the other Procedures as instructed.
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File No. 960-140 Table 2-2 DC IN icon DC IN icon Power supply status Lights green DC power is being supplied from the AC adapter. Blinks orange Power supply malfunction*3 Doesn’t light Any condition other than those above. *3 When the power supply controller detects a malfunction, the DC IN icon blinks and an error code is displayed. To check the power supply status, install a battery pack and connect an AC adapter. Check 1 If the DC IN icon blinks orange, go to Procedure 2.
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File No. 960-140 Procedure 2 Error Code Check If the power supply microprocessor detects a malfunction, the DC IN icon 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 half second Interval between data bits Off for half second The error code begins with the least significant digit. Example: Error code 12h (Error codes are given in hexadecimal format.
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File No. 960-140 Main Battery Error code Meaning 20h Battery voltage is over the limit (13.46V). 21h Main battery charge current is over the limit (2.53A). 22h Mai battery discharge current is over the maximum allowed limit when there is no load (0.5A). 23h Main battery charge current is over limit (1.80A) whenthere . 24h Current sensing IC is not normal. 25h Main battery charge current is over the limit (0.5A). S5V output Error code 40h Meaning S5V voltage is under the limit (4.75V).
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File No. 960-140 B2V output Error code Meaning 70h B2V voltage is over the limit (2.88V). 71h B2V voltage is under the limit (2.13V) when power supply is turned on. 72h B2V voltage is under the limit (2.13V) when the computer is booting up. 73h B2V voltage is over the limit (2.13V) when power supply is turned off. B1V output Error code Check 2 Meaning 80h B1V voltage is over the limit (2.16V). 81h B1V voltage is under the limit (1.44V) when power supply is turned on.
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File No. 960-140 Procedure 3 Connection Check The power supply wiring diagram is shown below: Any of the connectors may be disconnected. Perform Check 1. Check 1 Make sure the Libretto 100's AC adapter is firmly connected to the computer's DC IN socket and a power source. If these cables are connected correctly, go to Check 2. Check 2 Replace the AC adapter with a new one. If the DC IN icon does not glow green, go to Procedure 5.
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File No. 960-140 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 adapter and turn on the power. If you cannot turn on the power, go to Procedure 5. 3. Run the Diagnostic test, go to System test and execute subtest 06 (quick charge) described in Chapter 3. 4. When quick charge is complete, the diagnostics test displays the result code.
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File No. 960-140 Procedure 5 Replacement Check The AC adapter may be disconnected or damaged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures. After checking the connection, perform the following checks: Check 1 Replace the AC adapter with a new one. If the problem still exists, go to Check 2. Check 2 Replace the system board with a new one. Refer to Chapter 4 for instructions on how to remove and replace the system board.
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File No. 960-140 1.4 System Board Troubleshooting This section describes how to determine if the system board is defective or not functioning properly. Start with Procedure 1 and continue with the other procedures as instructed.
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File No. 960-140 Procedure 1 Message Check When the power is turned on, the system performs the Initial Reliability Test (IRT) installed in the BIOS ROM. The IRT tests each IC on the system board and initializes it. If an error message is shown on the display, perform Check 1. If there is no error message, go to Procedure 2. If Toshiba MS-DOS or Toshiba Windows 95 is properly loaded, go to Procedure 4.
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File No. 960-140 Check 3 The IRT checks the system board. When the IRT detects an error, the system stops or an error message appears. If one of the following error messages (1) through (17), (24) or (25) displays, go to Procedure 5. If error message (18) displays, go to the Keyboard Troubleshooting Procedures in Section 2.7. If error message (19), (20) or (21) displays, go to the HDD Troubleshooting Procedures in Section 2.6.
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File No. 960-140 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 steps below: 1. Plug the printer port LED into the computer’s parallel port. 2. Hold down the space bar and turn on the computer’s power. 3.
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File No. 960-140 Table 2-3 Printer port LED boot mode status (1/5) LED Status Test item Message FFh Start Register initialization for boot block B0h Flash ROM check PIT ch.
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File No. 960-140 Procedure 3 Printer Port LED Check on Resume 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 Hibernation mode. To use the printer port LED follow the steps below: 1. Make sure the computer is in Resume mode. 2. Plug the printer port LED into the computer’s parallel port. 3. Turn on the computer’s power. 4. Read the LED status from left to right as you face the back of the computer. 5.
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File No. 960-140 Procedure 4 Diagnostic Test Program Execution Check Execute the following tests from the Diagnostic Test Menu. Refer to Chapter 3,Tests and Diagnostic, for more information on how to perform these tests. 1. System test 2. Memory test 3. Keyboard test 4. Display test 5. Floppy Disk test 6. Printer test 7. ASYNC test 8. Hard Disk test 9. Real Timer test 10. NDP test 11. Expansion test 12. Sound test If an error is detected during these tests, go to Procedure 5.
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File No. 960-140 1.5 FDD Troubleshooting This section describes how to determine if the FDD is functioning properly. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required. Procedure 1: FDD Head Cleaning Check Procedure 2: Diagnostic Test Program Execution Check Procedure 3: Connector Check and Replacement Check Procedure 1 FDD Head Cleaning Check FDD head cleaning is one option available in the Diagnostic Program.
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File No. 960-140 Procedure 2 Diagnostic Test Program Execution Check Insert the Diagnostics Disk in the FDD, turn on the computer and run the test. Refer to Chapter 3, Tests and Diagnostics, for more information about the diagnostics test procedures. Floppy disk drive test error codes and their status names are listed in Table 2-5. Make sure the floppy disk is formatted correctly and that the write protect tab is disabled. If any other errors occur while executing the FDD diagnostics test, go to Check 1.
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File No. 960-140 Procedure 3 Connector Check and Replacement Check The FDD, cable and PC card is a single unit. Install the FDD's PC card in the computer, then begin with Check 1 below. Check 1 Make sure the PC card is properly connected to the system board. If the connection is loose, reinstall the PC card and repeat Procedure 2. If there is still an error, go to Check 2. Check 2 The FDD may be defective or damaged. Replace the FDD with a new one.
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File No. 960-140 1.6 HDD Troubleshooting This section describes how to determine if the HDD is functioning properly. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required.
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File No. 960-140 Procedure 1 Message Check When the computer’s HDD does not function properly, some of the following error messages may appear on the display. Start with Check 1 below and perform the other checks as instructed. Check 1 If any of the following messages appear, go to Procedure 5. If the following messages do not appear, perform Check 2. HDC ERROR (After 5 seconds this message will disappear.) or HDD #0 ERROR (After 5 seconds this message will disappear.
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File No. 960-140 Procedure 2 Partition Check Insert the Toshiba MS-DOS system disk and restart the computer. Perform the following checks: Check 1 Type C: and press Enter. If you cannot change to 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 Display Partition Information from the FDISK menu. If drive C is listed, go to Check 3. If drive C is not listed, return to the FDISK menu and choose the option to create a DOS partition on drive C.
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File No. 960-140 Procedure 3 Format Check The computer’s HDD is formatted using the low level format program and the MS-DOS FORMAT program. To format the HDD, start with Check 1 below and perform the other steps as required. 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 an error message appears on the display, refer to the Toshiba MS-DOS Manual for more information and perform Check 2.
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File No. 960-140 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 more information about the HDD test program. If an error is detected during the HDD test, an error code and status will display. The error codes and statuses are listed in Table 2-6. If an error code is not generated and the problem still exists, go to Procedure 5.
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File No. 960-140 Procedure 5 Connector Check and Replaceme nt Check The HDD or system board may be disconnected 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 system board. If any of the connections are loose, reconnect firmly and repeat Procedure 1. If there is still an error, go to Check 2. Check 2 The HDD may be damaged.
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File No. 960-140 1.7 Keyboard Troubleshooting To determine if the computer’s keyboard is functioning properly, perform the following procedures. Start with Procedure 1 and continue with the other procedures as instructed. Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector and Replacement Check Procedure 1 Diagnostic Test Program Execution Check Execute the Keyboard Test in the Diagnostic Program.
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File No. 960-140 Procedure 2 Connector and Replacement Check The keyboard is connected to the system board by flat cables. These cables or connectors may be disconnected or damaged. If there is a problem with the keyboard, disassemble the computer as described in Chapter 4, Replacement Procedures, and perform Check 1. Check 1 Make sure the following cables are not damaged and are connected to the system board. If the cables are damaged, replace the keyboard with a new one.
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File No. 960-140 1.8 Pointing Device Troubleshooting To determine if the computer's pointing device is functioning properly, perform the following procedures. Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector and Replacement Check Procedure 1 Diagnostic Test Program Execution Check Execute the pointing device Test in the Diagnostic Program of Keyboard Test Program. Refer to Chapter 3, Test and Diagnostic, for more information on how to perform the test program.
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File No. 960-140 1.9 Display Troubleshooting This section describes how to determine if the computer’s display is functioning properly. Start with Procedure 1 and continue with the other procedures as instructed. Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector and Replacement Check Procedure 1 Diagnostic Test Program Executi on Check The Display Test program is stored on the computer’s Diagnostics disk. This program checks the display controller on the system board.
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File No. 960-140 Procedure 2 Connector and Replacement Check The FL, FL inverter board, LCD module, LCD flat cable and system board are connected to the display circuits. Any of these components may be damaged. Refer to Chapter 4, Replacement Procedures, for instructions on how to disassemble the computer and then perform the following checks: If the FL does not light, perform Check 4. If characters are not displayed clearly, perform Check 3.
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File No. 960-140 Chapter 3 Contents 3.1 The Diagnostic Test................................................................................................3-1 3.2 Executing the Diagnostic Test.................................................................................3-3 3.3 Subtest Names........................................................................................................3-7 3.4 System Test.....................................................................................
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File No. 960-140 3.22 3.23 3.24 Floppy Disk Drive Utilities....................................................................................3-51 3.22.1 Function Description........................................................................3-51 3.22.2 Operations .......................................................................................3-52 System Configuration............................................................................................3-56 3.23.
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File No. 960-140 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 Diagnostics Program is stored on the Diagnostic Disk. The Diagnostic Test consists of 12 programs that are grouped into the Service Program Module (DIAGNOSTIC TEST MENU). NOTES: To start the diagnostics, follow these steps: 1. Check all cables for loose connections. 2. Exit any application you may be using and close Windows.
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File No. 960-140 You will need the following equipment to perform some of the Diagnostic test programs. The Diagnostics Disk (all tests) A formatted working disk for the floppy disk drive test (all tests) A cleaning kit to clean the floppy disk drive heads (Head Cleaning) A PC card wraparound connector for the I/O card test (Expansion test) (Rev.
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File No. 960-140 3.2 Executing the Diagnostic Test Toshiba MS-DOS is required to run the DIAGNOSTICS PROGRAM. To start the DIAGNOSTIC PROGRAM, follow these steps: 1. Connect a wraparound connector to the I/O adapter's printer port and RS-232C port. Connect the I/O adapter to the computer. Next, connect the FDD and insert the diskette containing the test program 2. Turn on the computer and the test program will execute and the test menu will be displayed.
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File No. 960-140 3. To select the DIAGNOSTIC TEST option from the DIAGNOSTICS MENU, set the highlight bar to 1 and press Enter. The following DIAGNOSTIC TEST MENU will appear: TOSHIBA personal computer xxx DIAGNOSTICS version X.XX (c) copyright TOSHIBA Corp.
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File No. 960-140 4. Select the option you want to execute and press Enter. The following message appears: SYSTEM TEST XXXXXXX SUB- TEST : XX PASS COUNT: XXXXX WRITE DATA: XX ADDRESS : XXXXXX xxx DIAGNOSTIC TEST VX.
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File No. 960-140 Selecting YES for ERROR STOP stops the test program when an error is found and displays the operation guide on the right side of the display screen as shown below: ERROR STATUS NAME [ [ HALT OPERATION ]] 1: Test end 2: Continue 3: Retry These three selections have the following functions respectively: 1. Terminates the test program and exits to the subtest menu. 2. Continues the test. 3. Restarts the test from the error.
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File No. 960-140 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.
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File No. 960-140 Table 3-1 Subtest names (2/2) No. 3-8 Test Name Subtest No.
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File No. 960-140 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. Subtest 05 Thermistor Check This subtest reads the thermistor connect check status of the power supply microprocessor, then compares it with the original data.
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File No. 960-140 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 RAM constant data (real mode) This subtest writes a 256-byte unit of constant data to conventional memory (0 to 640 KB). Then reads the new data and compares the result with the original data. The constant data is FFFFh, AAAAh, 5555h, 0101h, and 0000h.
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File No. 960-140 Subtest 05 Memory module NOTE: To execute this subtest, an optional memory card must be installed in the computer. This subtest functions the same as subtest 04, except it is used for testing an optional memory card. Memory module capacity is 32MB. After selecting subtest 05, the following message will appear: Extended memory size (1:32 MB)? Select the number that corresponds to the memory card installed in the computer.
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File No. 960-140 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. The Keyboard test contains four subtests that test the computer’s keyboard, PS/2 mouse, and Pointing Stick actions. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 Pressed key display (80/82) NOTE: The Num Lock and the Overlay mode must be off to execute this subtest.
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File No. 960-140 Subtest 02 Pressed key code display When a key is pressed, the scan code, character code, and key top name displays on the screen in the format shown below. The Ins, Caps Lock, Num Lock, Scroll Lock, Alt, Ctrl, Left Shift, and Right Shift keys display in reverse screen mode when pressed. The scan codes, character codes, and key top names are shown in Appendix D.
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File No. 960-140 Subtest 04 Pointing stick This subtest checks the functions of the pointing stick as shown below. A) IPS stick pressure sensing direction and parameter. B) IPS switch function check. This test reports the pointing stick motion response from the IPS and IPS switch. When the stick is pressed towards the upper left, the display changes according to the following illustration. If an IPS switch is pressed, the
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File No. 960-140 Subtest 05 USB Wrap around test This subtest checks USB. The USB TEST Module (ZD0003P01) and USB Cable (ZD0003P02) must be connected to the computer. If the test is completed 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. NOTE: To execute this subtest, the Enhanced Port Replicator must be connected to the computer.
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File No. 960-140 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 eight subtests that test the display in various modes. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 VRAM read/write for VGA This subtest writes constant data AAh and 55h and address data to video RAM (2MB: A0000h-AFFFFh).
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File No. 960-140 Subtest 03 Gradation & mode test for VGA This subtest displays gradations for each mode. Execute the test, then press Enter to change the mode. Resolution Mode 800 x 480 3, 12, 13 NOTE: Mode 52 test can test only an external monitor, it cannot be used for the internal LCD. The display below appears on the screen when this subtest is executed. Pressing Enter changes the size of the displayed image. Pressing Enter changes the size of the displayed image.
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File No. 960-140 Pressing Enter again changes the size of the displayed image. To exit this subtest and return to the DISPLAY TEST menu, press Ctrl + Break.
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File No. 960-140 Subtest 04 “H” pattern display This subtest displays a full screen of “H” patterns.
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File No. 960-140 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. The contents of the floppy disk will be erased. To execute the Floppy Disk Test, select 5 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions displayed on the screen. The Floppy Disk test contains five subtests that test the FDD.
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File No. 960-140 Subtest 01 Sequential read This subtest performs a Cyclic Redundancy Check (CRC) that continuously reads all the tracks on a floppy disk. The following tracks are read according to the media type in the floppy disk drive: Double-sided, double-density (2D): Tracks 0 to 39. Double-sided, double-density, double-track (2DD) and doublesided, high-density, double-track (2HD): Tracks 0 to 79. The start track is specified when the FDD test is started from the Diagnostic Test Menu.
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File No. 960-140 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 messages will appear after selecting the Printer Test. Answer each of the questions with an appropriate response to execute the test. NOTE: An IBM compatible printer must be connected to the system to execute this test.
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File No. 960-140 Subtest 02 Function This subtest is for IBM compatible printers and tests the following functions: 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 Wraparound NOTE: To execute this subtest, a parallel port wraparound connector must be connected to the computer’s printer port. The connector’s (34M741986G01) wiring diagram is shown in Appendix F.
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File No. 960-140 3.10 Async Test To execute the Async Test, select 7 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions on the screen. The async test contains seven subtests that test the asynchronous communication functions. Move the highlight bar to the subtest you want to execute and press Enter.
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File No. 960-140 Subtest 03 Point to point (receive) This subtest is used with subtest 02 described above. This subtest receives the data from the send side, then sends the received data. Subtest 04 Interrupt test This subtest checks the Interrupt Request Level of IRQ 4, 3 and 5 from the send side. Subtest 06 FIR/SIR Point to point (send) NOTE: To execute subtests 06 and 07, each computer must have access to the other computer’s infrared port.
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File No. 960-140 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: The contents of the hard disk will be erased when subtest 02, 03, 04, 05, 06, 08, 09, or 10 is executed. Before running the test, the customer should transfer the contents of the hard disk to floppy disk.
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File No. 960-140 4. This message is used to select whether or not the HDD status is displayed on the screen. The HDD status is described in section 3.19. Select yes or no: Detail status display yes no 5. This message is used to select whether or not the HDD status is displayed on the screen. The HDD status is described in section 3.19. Select 1 or 2 and press Enter. 6. The Hard Disk Test message will appear after you respond to the Detail Status prompt.
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File No. 960-140 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.
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File No. 960-140 3 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 Enter. Subtest 01 Real time A new date and time can be input during this subtest. To execute the real time subtest follow these steps: 1.
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File No. 960-140 Subtest 03 Real time carry CAUTION: When this subtest is executed, the current date and time are erased. This subtest checks the real time clock increments, making sure the date and time are displayed in the following format: Current date Current time : : 12-31-19 95 23:59:58 Pressing Enter displays the following Current date : Current time : 01-01-1996 00:00:00 PRESS [Enter] KEY TO EXIT TEST Press Ctrl + Break to exit.
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File No. 960-140 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 Status word Bus Addition Multiplication Press Ctrl + Break to exit.
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File No. 960-140 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. NOTE: Subtest 01 To execute this subtest, the PC card wraparound connector is required.
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File No. 960-140 NOTE: Subtests 02 and 04 are for Enhanced Port Replicator . For procedures on those subtests, refer to Enhanced Port Replicator manual. Subtest 03 RGB monitor ID test Connect a wrap around Board to the external monitor port to test the RGB monitor ID. Subtest 06 ZV Port wrap around Use the PC Card/ZV Test Card (Rev.B or higher) to conduct the test. The video and audio interfaces will be tested.
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File No. 960-140 3.15 Sound Test To execute the sound test, select 12 from the DIAGNOSTICS TEST MENU, press Enter and follow the directions on the screen. The sound test contains four subtests that test the computer’s sound functions. NOTE: To execute this subtest, the internal microphone and internal headphone (or internal speaker) are required. The system is capable of producing high volume sound, so when you use the headphones be careful to set the volume low and adjust it as necessary.
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File No. 960-140 3.16 Error Code and Error Status Names Table 3-2 lists the error codes and error status names for the Diagnostic Test.
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File No. 960-140 3.17 Hard Disk Test Detail Status When an error occurs in the hard disk test, the following message displays: HDC status = XXXXXXXX Detailed information about the hard disk test error displays on the screen by an eight-digit number. The first four digits represent the hard disk controller (HDC) error status number and the last four digits are not used.
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File No. 960-140 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 IDNF (Identification) “0” Not used “1” There was no ID field in the requested sector. 3 —— Not used 2 ABRT (Abort) “0” Not used “1” Illegal command error or a drive status error occurred.
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File No. 960-140 3.18 Hard Disk Format This command executes hard disk formatting. There are two types of hard-disk formatting: Low-level (physical) formatting MS-DOS (logical) formatting The hard disk format function performs a low-level format of the hard disk and executes the following hard disk formats and check: 1. 2. 3. 4. All track FORMAT Good track FORMAT Bad track FORMAT Bad track CHECK NOTE: The contents of the hard disk will be erased when the program executes.
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File No. 960-140 3.18.1 Function Description 1. All Track FORMAT This option performs a low-level format of all the tracks on the hard disk as listed in Table 3-5 below: NOTE: Before executing the all track format option, check for bad tracks using the Bad Track CHECK option or display a list of bad tracks on the HDD.
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File No. 960-140 3.18.2 Operations NOTE: After the HDD has been formatted, execute the Toshiba MS-DOS FDISK command to partition the HDD. Execute the Toshiba MS-DOS FORMAT command. Refer to the Toshiba MS-DOS manual for more information about using these commands. Selecting TEST 2 and pressing Enter in the DIAGNOSTIC MENU, displays the following messages: DIAGNOSTICS - HARD DISK 1 2 3 4 9 - FORMAT : VX.
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File No. 960-140 (c) Bad track register The Bad Track register prompt will appear as shown below. Enter the cylinder and head numbers of bad tracks and press Enter. Note that if there are no bad tracks, pressing Enter alone is the same as executing All Track Format described in item (d) below. [ WARNING: Current DISK data will be completely destroyed ] Press Bad cylinder number ( dddd)] key ? Press Bad head number ( dd)] key ? Enter the cylinder and head number in the format above in decimal notation.
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File No. 960-140 3. Bad Track FORMAT To format a track as a bad track, enter the number for the drive, interleave, cylinder and head as indicated in the screen prompt shown below. Drive number select (1 :#1, 2:#2) ? Interleave number (1 / 1 - 8 ) ? Press [Cylinder number ( dddd) ] ? Press [Head number ( dd) ] ? Press Enter to return to the Hard Disk Format menu. 4. Bad Track CHECK This subtest reads the entire disk and displays a list of bad tracks.
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File No. 960-140 3.19 3.19.1 Head Cleaning 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. 3.19.2 Operations 1. Selecting test 4 from the DIAGNOSTIC MENU and pressing Enter displays the following messages: DIAGNOSTICS - FLOPPY DISK HEAD CLEANING : VX.XX Mount cleaning disk(s) on drive(s). Press any key when ready. 2.
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File No. 960-140 3.20 3.20.1 Log Utilities 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 information will be lost. The error information displays in the following order: 1. Error count (CNT) 2. Test name (TS-NAME) 3. Subtest number (TS-NAME) 4. Pass count (PASS) 5. Error status (STS) 6.
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File No. 960-140 2. The error information displayed on the screen can be manipulated by the following number keys: The 1 key scrolls the display to the next page. The 2 key scrolls the display to the previous page. The 3 key returns to the Diagnostic Menu. The 4 key erases all error log information in RAM. The 5 key out puts the error log information to a printer. The 6 key reads the log information from a floppy disk. The 7 key writes the log information to a floppy disk. 3.
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File No. 960-140 3.21 3.21.1 Running Test Function Description This function automatically executes the following tests in sequence: 1. 2. 3. 4. 5. 6. 7. 8.
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File No. 960-140 4. Select Yes or 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.
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File No. 960-140 3.22 3.22.1 Floppy Disk Drive Utilities 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 command. This program can format a 5.25-inch or 3.5-inch floppy disk in the following formats: (a) 2DD: Double-sided, double-density, double-track, 96/135 TPI, MFM mode, 512 bytes, 9 sectors/track.
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File No. 960-140 3.22.2 Operations 1. Selecting 7 from the DIAGNOSTIC MENU and pressing Enter displays the following message: [ FDD UTILITIES ] 1 2 3 4 9 – – - FORMAT COPY DUMP HDD ID EXIT TO DIAGNOSTICS MENU 2. FORMAT program (a) Selecting FORMAT displays the following message: DIAGNOSTICS - FLOPPY DISK FORMAT : VX.XX Drive number select (1:A, 2:B ) ? (b) Select a drive number to display the following message: Type select (0:2DD ,3:2HD) ? (c) Select a media/drive type number and press Enter.
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File No. 960-140 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) Remove the Diagnostics Disk from the FDD, insert the source disk and press any key. The following message will appear, indicating the program has started.
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File No. 960-140 4. DUMP program (a) When DUMP is selected, the following message appears: DIAGNOSTICS-HARD DISK & FLOPPY DISK Drive type select (1:FDD, 2:HDD ) ? DUMP : VX.XX (b) Select a drive type. If 1 is selected in step (a), the following message displays. Select drive number (1:A, 2:B ) ? Select an FDD drive number. The display will go to step (c).
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File No. 960-140 (e) Insert a source disk and press any key. (f) The following message will appear: —— Max. [Track ] [ Head ] [Sector] address —— = XXXX = XX = XX Track number ?? Set the track number you want to dump. The system will access the disk and dump a list. 5. HDD ID program Selecting HDD ID displays the 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.
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File No. 960-140 3 3.23 System Configuration 3.23.1 Function Description The System Configuration program contains the 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 Microprocessor Version 8. Total Memory Size 9. Sound System 10. The number of printer ports 11. The number of ASYNC ports 12. The number of math co-processor 13. PCMCIA Slot 14. Modem Type 15.
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File No. 960-140 3.23.2 Operations Selecting 8 from the DIAGNOSTIC MENU and pressing Enter displays the following system configuration: System Configration Display : Ver X.XX [Machine Name ???] ** - Processor Type = XXXX ** - VGA Controller = XXXX * - MS-DOS Version = VX.XX * - BIOS ROM Version = V .XX 1st ID = XXH, 2nd ID = XXH * - BOOT ROM Version = VX.XX * - KBC Version = VX.XX * - PS Micom Version = VX.XX (EC Version = VX.
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File No. 960-140 3.24 SETUP 3.24.1 Function Description This program displays the current system setup information as listed below: 1. Memory (a) Total 2. Password 3. Peripheral (a) Pointing Devices (b) Parallel Port Mode (c) Hard Disk Mode 4. Boot Priority 5. Display (a) Power On Display CPU Cache (b) LCD Display Stretch 6. Others (a) (b) (c) (d) (e) (f) Power-up Mode CPU Cache Auto Power On Alarm Volume System Beep Panel Power On/Off 7. Configuration 8. I/O Ports (a) Serial (b) Parallel (c) Sound 9.
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File No. 960-140 3.24.2 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) . NOTE: The Panel Power On/Off item and the System Auto Off item appears when the computer is in Resume mode and Hibernation mode.
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File No. 960-140 Moving Within the SETUP Menu and Changing Values 1. Press and to move between the two columns. Press PgDn and PgUp to move between the two pages. Press ↑ and ↓ to move between items in a column. 2. Press either the space bar or BkSp to change the value. Accepting Changes and Exiting the SETUP Window 1. Press End to accept the changes you made.
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File No. 960-140 SETUP Options The SETUP screen is divided into functionally related groups. This section describes each group and its options. 1. Memory This option displays the computer’s memory. (a) Total This field displays the total amount of memory installed and is automatically calculated by the computer. You cannot change this value. 2. Password This field enables or disables the internal video controller. Registered The user password has been registered.
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File No. 960-140 (b) Parallel Port Mode This option in this tab are ECP and Standard Bi-directional. ECP Sets the port mode to Extended Capabilities Port (ECP). For most printers, the port should be set to ECP. (Default) Std. Bi-Direct. This setting should be used with some other parallel devices. (c) Hard Disk Mode Use this item to select the hard disk mode. Enhanced IDE Select this mode when using MS-DOS®. (Normal) Windows for Workgroups, Windows 95 or OS/2®.
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File No. 960-140 5. 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) Simultaneous Selects both the internal LCD and the external monitor for simultaneous display. (b) LCD Display Stretch LCD Display Stretch enables or disables a larger display area of the screen. 3-62 Enabled Enables the LCD display stretch feature.
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File No. 960-140 6. Others Whether 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 this option to choose hibernation, resume and boot mode. Boot Turns on boot mode. (Default) Resume Turns on resume mode. Hibernation Turns on hibernation mode. (b) CPU Cache Use this option to enable or disable the CPU cache. Enabled Enables the CPU cache. (Default) Disabled Disables the CPU cache.
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File No. 960-140 (c) Auto Power On Use this option to set a time and date for automatic power on the Alarm Date Option displays when Alarm Time is enabled. Alarm Time is set in the sequence of hours and minutes. Seconds cannot be changed. Alarm Date Option is set in the sequence of month and day. If Alarm Date is set to Disabled, the computer will be powered on at the same time every day. Press ↓ to move the cursor to the right and ↑ to move the cursor to the left when you set the date and time.
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File No. 960-140 (d) Alarm Volume This option disables or sets the volume level of the alarm. Setting this option to off disables the computer’s sound function for alarms. Off Disables the alarm. Low Sets the alarm volume to low. Medium Sets the alarm volume to medium. High Sets the alarm volume to high. (Default) When Alarm Volume is selected, the subwindow below displays to enable or disable certain functions. Enabled Enables the feature. (Default) Disabled Disables the feature.
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File No. 960-140 (f) System Auto Off Use this option to disable or set the duration of the system automatic off function in Resume or Hibernation mode. In Boot mode and Hibernation mode, it is disabled and does not display. Disabled Disables system automatic power off. xx Min. Automatically turns off power to the system if it is not used for the duration set. The duration xx can be set to 10, 20, 30, 40, 50 or 60 minutes. 7. Configuration This field displays the configuration method.
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File No. 960-140 8. I/O ports This option controls settings for the serial and parallel ports and the sound system. NOTE: Do not assign the same interrupt request level and I/O address to the serial port and PC card. (a) Serial Use this option to set the COM level for the serial port.
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File No. 960-140 (b) Parallel This option sets the interrupt request level (IRQ) and I/O port base address for the parallel port. When the Printer Port Type is set to Standard Bidirectional, the options are: LPT setting Interrupt level I/O address LPT 1 7 378H LPT 2 5 278H LPT 3 7 3BCH Not Used Disables the port Others Others settings made automatically by plug-and-play operating systems When the Printer Port Type is set to ECP, the DMA channel can also be set to 1, 2 or 3. The default is 3.
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File No. 960-140 (c) Sound Use this option to enable or disable the sound system. Enabled Enables the sound system. (Default) Disabled Disables the sound system. When Enabled is selected, a subwindow similar to the one below appears to let you set the WSS I/O address, SBPro I/O address, Synthesizer I/O address, WSS & SBPro & MPU401 IRQ Level, WSS (Play) DMA, WSS (Rec.) & SBPro DMA, Control I/O address, and MPU401 (MIDI I/F) for the sound system.
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File No. 960-140 WSS & SBPro & MPU401 IRQ level This option sets the IRQ level for the Windows Sound System, Sound Blaster Pro and MPU401. The available settings are: IRQ5 (default), IRQ7, IRQ9, IRQ11, IRQ15 WSS (Play) DMA This option sets the DMA channel for the Windows Sound System (playback). The available settings are: Channel 0, Channel 1 (default), Channel 3 WSS (Rec.) & SBPro DMA This option sets the DMA channel for the Windows Sound System (recording) and Sound Blaster Pro.
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File No. 960-140 10. PCI Bus This option displays the interrupt request level for the CardBus in the computer. It is for information only and cannot be changed. 11. PC Card This option lets you set the PC Card Controller mode. Auto-Selected Use this setting for all PC Card if you are using Windows 95. (Default) Card Bus/16 bit If the card does not work properly with the AutoSelected setting, use this setting for Card Bus PC card.
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File No. 960-140 Chapter 4 Contents 4.1 Overview................................................................................................................4-1 4.2 HDD.......................................................................................................................4-8 4.3 Optional Memory Module.....................................................................................4-10 4.4 Keyboard................................................................................
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File No. 960-140 Figure 4-15 Removing the PC card slot........................................................................4-19 Figure 4-16 Removing the mask seals...........................................................................4-20 Figure 4-17 Removing the display mask .......................................................................4-21 Figure 4-18 Removing the FL inverter board................................................................
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File No. 960-140 4.1 Overview The disassembly and replacement procedures for units that can be replaced in the field (FRUs) are described in this section. It may not be necessary to remove all the FRUs in order to replace one FRU. The chart below shows a guideline on which FRUs are to be removed before removing a certain FRU. Be sure to remove the battery pack first.
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File No. 960-140 Before Beginning Work Observe the following before beginning work. All procedures must begin with the removal of the AC adapter, battery pack and any PC cards. 1. Do not disassemble the computer unless a malfunction occurs. 2. Use the specified tools. 3. Use and storage require a work environment free of the following. • • • Dust and pollutants Static electricity Extremely high or low temperature or humidity 4.
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File No. 960-140 Disassembly Procedures There are two basic types of cable connectors. Pressure plate connector Normal pin connector To disconnect the cable from a pressure plate connector, lift the tab on either side of the plastic pressure plate of the connector, and gently pull the cable out from the connector. To connect the cable to a pressure plate connector, lift the pressure plate high enough and slide the cable into the connector.
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File No. 960-140 Tools and Devices It is important for the safety of the workers and others in the neighborhood to use electrostatic discharging (ESD) devices. Proper use of these devices will raise the success rate of repairs and reduce the expenses arising from damage and breakdown of the parts. The following are necessary for disassembly and reassembly.
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File No. 960-140 Removing the Battery Pack To remove the battery pack follow the steps below. 1. Switch the computer off. Disconnect the AC adapter and any other external devices from the computer. 2. Turn the computer upside down. 3. Slide the battery release latch to the left to unlock the battery. 4. Slide the battery out. CAUTION: • Do not short the battery pack terminals or the terminals of the personal computer to which the battery pack is to be connected.
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File No. 960-140 Installing the Battery Pack To install the battery pack, observe the following instructions. WARNING: Use only batteries recommended by Toshiba. Installation of the wrong battery could cause the battery to explode and cause injury or other damage. 1. Switch the computer off. Disconnect the AC adapter and all external devices from the computer. 2. Align the battery with the guide rails. 3. Push the battery into position.
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File No. 960-140 Installing the Optional PC Card To install the optional PC card follow the steps below. NOTE: Before installing the PC card, make sure that the computer is in boot mode. 1. Switch the computer off. 3. Insert the PC card. Carefully push it in place. 4. Check that, when the PC card is fully inserted, the PC card release lever moves to the left. The right lever releases the bottom card and the left lever releases the top card.
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File No. 960-140 4.2 HDD CAUTION: Be very careful not to press on the top or bottom of the HDD. Pressure can destroy data or damage the drive. Removing the HDD To remove the HDD follow the steps below. (See figures 4-1 to 4-3.) 1. Remove the two M2x14 silver screws securing the HDD cover and remove the cover.
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File No. 960-140 2. Pull the HDD bracket straight with your fingernail and pull the HDD out. NOTE: When pulling the HDD out, be sure to hold both corners of the bracket as shown below so as not to bend the bracket. Figure 4-2 Removing the HDD 3. Remove two thin-flat-head M3 screws from the HDD bracket, and separate the bracket and the HDD. Figure 4-3 Removing the HDD bracket Installing the HDD To install the HDD follow the steps below. (See figures 4-1 to 4-3.) 1.
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File No. 960-140 3. Seat the HDD cover and fasten it with two M2x14 silver screws.
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File No. 960-140 4.3 Optional Memory Module Removing Optional Memory Module To remove the optional memory module follow the steps below. (See figures 4-4 to 4-6.) 1. Lift up the right end of the keyboard brace to remove it. Figure 4-4 Removing the keyboard brace 2. Lift up the back edge of the keyboard.
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File No. 960-140 4. Lift out the keyboard and lay it against the display, being careful not to apply tension to the cables. Remove the super-thin-head M2.5 screw first, then remove the memory module. Figure 4-6 Removing the optional memory module Installing Optional Memory Module To install the optional memory module follow the steps below. (See figures 4-4 to 4-6.) 1. Connect the memory module to the connector. CAUTION: Do not touch the connectors of the memory module or computer.
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File No. 960-140 4.4 Keyboard Removing the Keyboard To remove the keyboard follow the steps below. (See figure 4-7.) 1. Remove two M2x3 silver screws securing the keyboard straps and slide each strap out from under its brace. 2. Disconnect the flexible cable from PJ302 and remove the keyboard. Figure 4-7 Removing the keyboard Installing the Keyboard To install the keyboard follow the steps below. (See figure 4-7.) 1.
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File No. 960-140 4.5 Display Assembly Removing the Display Assembly To remove the display assembly follow the steps below. (See figures 4-8 to 4-11.) 1. Lift out the metal cover. CAUTION: The metal cover is thin, so be careful not to cut yourself on the edge. Figure 4-8 Removing the metal cover 2. Disconnect the display flexible cable from PJ250 on the system board. 3. Remove insulator covering the RTC battery cable and lift the battery cable out of its groove.
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File No. 960-140 Figure 4-9 Removing the display flexible cable 4. Close the display, turn the computer upside down, and remove five M2x14 silver screws. Figure 4-10 Removing five screws 5. Turn the computer right side up and open the display. 6. Disconnect the microphone cable from PJ470 on the system board and lift off the display assembly.
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File No. 960-140 CAUTION: Make sure the flexible cable has been removed from PJ470 on the system board before removing the display assembly. An attempt to forcibly remove the display assembly when the flexible cable is still connected to PJ470 could damage the cable.
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File No. 960-140 Installing the Display Assembly To install the display assembly follow the steps below. (See figures 4-8 to 4-11.) 1. Seat the display assembly and connect the microphone cable to PJ470 on the system board. 2. Connect the display flexible cable to PJ250 on the system board (figure 4-9). 3. Lay the metal cover in place, making sure the cover is properly aligned with the edges of the computer. 4. Route the RTC battery cable in its groove and secure it with insulator. 5.
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File No. 960-140 4.6 RTC Battery Removing the RTC Battery To remove the RTC battery follow the steps below. (See figure 4-12.) 1. Disconnect the RTC battery cable from PJ300 on the system board. 2. Lift out the RTC battery. Figure 4-12 RTC battery removal Installing the RTC Battery To install the RTC battery follow the steps below. (See figure 4-12.) 1. Connect the RTC battery cable to PJ300 on the system board. 2. Seat the RTC battery. 3. Install the removed components.
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File No. 960-140 4.7 System Board, Heat Sink and PC Card Slot Removing the System Board, Heat Sink and PC Card Slot To remove the system board, heat sink and PC card slot observe the following procedures. (See figures 4-13 to 4-15.) 1. Grasp the system board and lift it out. Figure 4-13 Removing the system board 2. Remove one M2x4 screw and two M2x6 screws securing the heat sink to the system board. 3. Remove four M2x14 screws securing both the heat sink and PC card slot to the system board. 4.
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File No. 960-140 Figure 4-14 Removing the heat sink 5. Turn the system board over and lift off the PC card slot. Figure 4-15 Removing the PC card slot Installing System Board, Heat Sink and PC Card Slot To install the system board, heat sink and PC card slot follow the steps below. (See figures 413 to 4-15.) 1. Secure the heat sink to the system board with one M2x4 screw, and two M2x6 screws. 2. Turn over the system board and set the PC card slot in place.
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File No. 960-140 4.8 Display Mask Removing the Display Mask To remove the display mask follow the steps below. (See figures 4-16 to 4-17.) 1. Remove the two mask seals on the right and left in the lower part of the display mask. 2. Remove two M2.5x5 screws that were covered by the seals. 3. Remove the AccuPoint cap. Figure 4-16 Removing the mask seals 4. Carefully insert your fingers between the mask and top of the LCD panel and release the four latches at the top of the display mask.
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File No. 960-140 5. Continue along the sides (three latches on each side) and the bottom (three latches). Figure 4-17 Removing the display mask Installing the Display Mask To install the display mask follow the steps below. (See figures 4-16 and 4-17.) 1. Set the display mask in place and fasten the latches starting with the three at the bottom. 2. Continue along the sides (three latches on each side) and the top (four latches). 3. Mount the AccuPoint cap. 4. Secure the display mask with two M2.5x5 screws.
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File No. 960-140 4.9 FL Inverter Board Removing the FL Inverter Board To remove the FL inverter board follow the steps below. (See figures 4-18 to 4-19.) 1. Remove one M2x5 silver screw securing the FL inverter board. 2. Slide the FL inverter board slightly to the right to clear a small latch and lift out the board, being careful not to apply tension to the cables. Figure 4-18 Removing the FL inverter board 3.
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File No. 960-140 Figure 4-19 Disconnecting the display cable Installing the FL Inverter Board To install the FL inverter board follow the steps below. (See figure 4-18 to 4-19.) 1. Connect the FL cable to CN1 on the FL inverter board and the display flexible cable to CN2. 2. Place the FL inverter board in position and secure it with one M2x5 silver screw. 3. Install the removed components.
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File No. 960-140 4.10 LCD Module Caution: Hold the LCD module in one of two ways: 1. Grasp the LCD module lightly as shown in the top left illustration. Do not grip it tightly. 2. Hold it gently between your thumb and fingers. Hold only on the side that does not have connectors along the edge.
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File No. 960-140 When handling the LCD module, do not touch or apply pressure to the surface of the LCD panel. Do not touch or apply pressure to the connectors.
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File No. 960-140 Removing the LCD Module To remove the LCD module follow the steps below. (See figure 4-20.) 1. Remove four M2x5 silver screws securing the LCD module to the top cover. 2. Carefully rotate the LCD module out of the top cover from left to right being careful not to apply tension to the cables connected to the right side. 3. Disconnect the display flexible cable from CN1 on the LCD module.
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File No. 960-140 Installing the LCD Module To install the LCD module follow the steps below. (See figure 4-20.) 1. Connect the display flexible cable to CN1 on the LCD module. 2. Carefully rotate the LCD module into the top cover from right to left. 3. Secure the LCD module to the top cover with four M2x5 silver screws.
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File No. 960-140 4.11 Speaker, Power Switch Board and AccuPoint Board Removing the Speaker, Power Switch Board and AccuPoint Board To remove the speaker, power switch board and AccuPoint board follow the steps below. (See figures 4-21 and 4-23.) 1. Disconnect the speaker cable from the speaker connector and lift out the speaker with its rubber case. Figure 4-21 Removing the speaker 2. Separate the speaker from its case. 3. Disconnect the AccuPoint flexible cable from PJ12 on the power switch board.
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File No. 960-140 4. Turn over the power switch board, being careful not to apply tension to the remaining cable connection and disconnect the LCD flexible cable from PJ3 on the power switch board. Figure 4-22 Removing the power switch board 5. Remove one M2x3 silver screw securing the AccuPoint board and lift out the board.
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File No. 960-140 Installing the Speaker, Power Switch Board and AccuPoint Board To install the speaker, power switch board and AccuPoint board follow the steps below. (See figures 4-21 to 4-23.) 1. Seat the AccuPoint board and secure it with one M2x3 silver screw. 2. Connect the LCD flexible cable to PJ3 on the power switch board. 3. Connect the AccuPoint flexible cable to PJ12 on the power switch board. 4. Seat the speaker in its case. 5.
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File No. 960-140 4.12 LCD Flexible Cable and Microphone Removing LCD Flexible Cable and Microphone To remove the LCD flexible cable and microphone follow the steps below. (See figures 4-24 to 4-29.) 1. Remove one M2x5 sliver screw securing the LCD flexible cable and two M2.5x5 screws securing the display hinges. 2. Remove two strips of tape securing the LCD flexible cable. 3. Separate the LCD module from the top cover.
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File No. 960-140 4. Remove insulator covering the microphone cable. Figure 4 -25 Removing tape 5. Remove one M2x4 screw securing the left top cover brace to the top cover and remove a plastic support for the left top cover brace.
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File No. 960-140 6. Remove the left top cover brace and microphone. Figure 4-27 Removing the left top cover brace and microphone 7. Separate the microphone from its rubber case. 8. Remove one M2x5 silver screw and a brace for the LCD flexible cable.
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File No. 960-140 9. Remove the LCD cable by pulling it through the opening that was covered by the brace.
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File No. 960-140 Installing LCD Flexible Cable and Microphone To install the LCD flexible cable and microphone follow the steps below. (See figures 4-24 to 4-29.) 1. Thread the LCD cable through the slot in the top cover. 2. Seat the LCD flexible brace and secure it with one M2x5 screw. 3. Put the microphone in the rubber case and seat the microphone with rubber case in the top cover. 4. Seat the left top cover brace and plastic support, then secure the brace with one M2x4 screw. 5.
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File No. 960-140 4.13 I/O Adapter Board Removing the I/O Adapter Board To remove the I/O adapter board follow the steps below. (See figures 4-30 to 4-32.) 1. Remove the I/O adapter from the computer. Disconnect all the external cables from the I/O adapter. 2. Turn the I/O adapter upside down, and remove three M2x5 silver screws from the back and six M2x5 silver screws from the bottom. Figure 4-30 Removing nine screws 3.
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File No. 960-140 Installing the I/O Adapter Board To install the I/O adapter board follow the steps below. (See figures 4-30 to 4-32.) 1. Seat the I/O adapter board and secure it with four M2x4 screws. 2. Seat the top cover on the bottom cover. 3. Turn the I/O adapter upside down, and secure six M2x5 silver screws to the bottom and three M2x5 silver screws to the back.
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File No. 960-140 Appendix Contents Appendix A Handling the LCD Module...................................................................... A-1 Appendix B Board Layout ........................................................................................... B-1 B.1 System Board Front View ......................................................................... B-1 B.2 System Board Back View .......................................................................... B-2 Appendix C Pin Assignments ..
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File No. 960-140 E.7 Scandinavian (SC) Keyboard...................................................................... E-4 E.8 Swiss-German (SL) Keyboard.................................................................... E-4 Appendix F Wiring Diagrams...................................................................................... F-1 F.1 Parallel Port Wraparound Connector...........................................................F-1 F.2 Serial Port Wraparound Connector..........................
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File No. 960-140 Figures Figure B-1 Board layout (front) ................................................................................... B-1 Figure B-2 Board layout (back).................................................................................... B-2 Figure E-1 US keyboard .............................................................................................. E-1 Figure E-2 UK keyboard..............................................................................................
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File No. 960-140 Table C-11 AC adapter connector pin assignments 23-pin)......................................... C-12 Table C-12 Main Battery connector pin assignments (10-pin) ..................................... C-12 Table D-1 Scan codes (set 1 and set 2)........................................................................D-1 Table D-2 Scan codes with left Shift key.....................................................................D-5 Table D-3 Scan codes in Numlock mode...................
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File No. 960-140 Appendix A Appendix A Handling the LCD Module Precautions for handling the LCD module The LCD module can be easily damaged during assembly or disassembly. Therefore, please observe the following precautions when handling it: 1. When installing the LCD module in its cover, be sure to seat it so that it is properly aligned and maximum visibility of the display is maintained. 2.
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File No. 960-140 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, use a CRT cleaning agent. Apply the agent to a cloth and then wipe the panel’s surface. Do not apply cleanser directly to the panel. 4. If water or other liquid is left on the panel’s surface for a long period, it can change the screen’s tint or stain it.
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File No. 960-140 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.
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File No. 960-140 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. 9. Do not disassemble the LCD module. Disassembly can cause malfunctions.
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File No. 960-140 10. If you transport the module, do not use packing material that contains epoxy resin (amine) or silicon glue (alcohol or oxime). These materials can release gas that can damage the panel’s polarization.
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File No. 960-140 Appendix B Appendix B Board Layout B.
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File No. 960-140 Appendix C Appendix C Pin Assignments System Board C.1 PJ1 Expansion Memory Connector (140-pin) Table C-1 Expansion Memory connector pin assignments (140-pin)(1/3) Pin No. Signal name I/O Pin No.
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File No. 960-140 Table C-1 Expansion Memory connector pin assignments (140-pin)(2/3) Pin No. C-2 Signal name I/O Pin No.
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File No.960-140 Table C-1 Expansion Memory connector pin assignments (140-pin)(3/3) Pin No. C.2 Signal name I/O Pin No.
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File No. 960-140 Table C-2 Docking Interface connector pin assignments (140-pin)(2/3) Pin No. C-4 Signal Name I/O Pin No.
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File No.960-140 Table C-2 Docking Interface connector pin assignments (140-pin)(3/3) Pin No. Signal Name I/O Pin No.
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File No. 960-140 C.3 PJ250 FL Inverter I/F Connector (60-pin) Table C-3 FL Inverter I/F connector pin assignments (60-pin) Pin No. C-6 Signal name I/O Pin No.
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File No.960-140 C.4 PJ300 RTC Battery Connector (3-pin) Table C-4 RTC Battery connector pin assignments (3-pin) Pin No. C.5 Signal name I/O Pin No. 2 1 RTCVDD;100 - 3 GND - Signal Name NC I/O - PJ301 HDD Connector (44-pin) Table C-5 HDD connector pin assignments (44-pin) Pin No. Signal name I/O Pin No.
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File No. 960-140 C.6 PJ302 Keyboard Connector (24-pin) Table C-6 Keyboard connector pin assignments (24-pin) Pin No. C-8 Signal name I/O Pin No.
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File No.960-140 C.7 PJ303 PC Card Slot Connector (150-pin) Table C-7 PC card slot connector pin assignments (150-pin) (1/3) Pin No. Signal name I/O Pin No.
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File No. 960-140 Table C-7 PC card slot connector pin assignments (150-pin) (2/3) Pin No. Signal name I/O Pin No.
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File No.960-140 Table C-7 PC card slot connector pin assignments (150-pin) (3/3) Pin No. C.8 Signal name I/O Pin No.
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File No. 960-140 C.10 PJ471 External Microphone Connector (5-pin) Table C-10 External Microphone connector pin assignments (5-pin) Pin No. Signal name I/O Pin No. Signal Name I/O 1 GND - 2 MIC I 3 NC - 10 MIC O 11 NC - C.11 PJ500 AC Adapter Connector (2-pin) Table C-11 AC adapter connector pin assignments 23-pin) Pin No. 1 Signal name DCIN I/O Pin No. - 2 Signal Name GND I/O - C.
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File No. 960-140 Appendix D Appendix D Keyboard Scan/Character Codes Table D-1 Scan codes (set 1 and set 2) (1/4) Cap Code set 1 Make Break Code set 2 Make Note No.
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File No. 960-140 Table D-1 Scan codes (set 1 and set 2) (2/4) Cap D-2 Code set 1 Break Code set 2 Make Note No.
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File No. 960-140 Table D-1 Scan codes (set 1 and set 2) (3/4) Cap Code set 1 Make Code set 2 Break Make Note No.
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File No. 960-140 Table D-1 Scan codes (set 1 and set 2) (4/4) Cap Code set 1 Make Code set 2 Break Make No. Keytop Break 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 5B E0 DB E0 1F E0 F0 1F 204 App E0 5D E0 DD E0 2F E0 F0 2F Notes: 1. 2. 3. 4. 5. 6. 7. D-4 Note * * * * * * * Scan codes differ by mode. Scan codes differ by overlay function.
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File No. 960-140 Table D-5 Scan codes in overlay mode Cap No.
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File No. 960-140 Table D-7 Scan codes with Alt key Key Shift top Pause Code set 1 Code set 2 Make Break Common E1 1D 45 E1 SD Ctrl* E0 46 E0 C6 *: This key generates only make codes.
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File No. 960-140 Appendix E Appendix E E.1 Key Layout United States (US) Keyboard Figure E-1 US keyboard E.
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File No. 960-140 E.3 German (GR) Keyboard Figure E-3 GR keyboard E.
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File No. 960-140 E.5 Spanish (SP) Keyboard Figure E-5 SP keyboard E.
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File No. 960-140 E.7 Scandinavian (SC) Keyboard Figure E-7 SC keyboard E.
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File No. 960-140 Appendix F Appendix F F.1 Wiring Diagrams Parallel Port Wraparound Connector Figure F-1 Parallel port wraparound connector F.
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File No. 960-140 F.3 Serial Port Direct Cable (9-Pin to 9-Pin) Figure F-3 Serial port direct cable (9-pin to 9-pin) F.
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File No. 960-140 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: Diagnostics disk for the computer Rewriting the BIOS 1. Set the system to boot mode. 2. Turn off the power to the computer. 3. Remove the external cable and any optional memory or PC card. 4. Turn on the power while holding down the F12 key.
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File No. 960-140 Appendix H Appendix H Reliability The following table shows MTBF (Mean Time Between Failures) for each component.
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