.1 Features The 100CS is one of the lightest and most advanced portable computers available. Utilizing advanced technology and high-speed components, the computer offers multimedia functions, excellent display legibility, battery operation, and IBM PC/AT compatibility. The unit consists of the following features: ❑ Microprocessor A Pentium ® processor with Voltage Reduction Technology (VRT) that operates at 75 MHz and 3.3/2.9 volts. ❑ Memory Standard 8 MB of CMOS RAM.
❑ Parallel port This port can be used to connect a Centronics compatible printer or other parallel device. The port supports ECP (Extended Capabilities Port) conforming to IEEE·1284. ❑ Serial port (9-pin) The serial controller is 16550UART compatible. This port can be used to connect such serial devices as a serial printer, serial mouse, or external modem. ❑ RGB port The female, 15-pin, D-shell connector can be connected to an external SVGA monitor. ❑ Ext.
The 100CS Personal Computer is shown in figure 1-1. Figure 1-1 100CS personal computer The system configuration is shown in figure 1-2.
1.2 System Unit Block Diagram Figure 1-3 is a block diagram of the system unit.
The system board is composed of the following major components: ❑ Microprocessor One Pentium processor with VRT 64-bit microprocessor Pentium processor operates at 75 MHz and 3.3/2.9 volts The math co-processor and 16KB cache memory are integrated into Pentium ❑ Standard RAM 8 MB, four 1Mx16-bit chips 3.
❑ System Controller Gate Array (SCPCNT-GA) This gate array has the following functions: • CPU control - SMI control - CPU clock control • Memory control - 64-bit bus memory control - 32-bit bus memory control • Bus control - 64-bit data bus <==>32-bit data bus - 32-bit local bus control • Address latch control • I/O register control • Processing speed control ❑ ISA Bus Controller Gate Array (SISCNT3-GA) This gate array has the following functions: • Bus control - 32-bit data bus <==> 16-bit data bus - ISA b
❑ Video Controller C&T F65548 is used. This video controller controls internal DSTN color LCD and external SVGA compatible CRT. ❑ Keyboard Controller (KBC) One M38802M4 chip is used. This KBC includes the keyboard scan controller and keyboard interface controller. The KBC controls the internal keyboard, external keyboard, PS/2 mouse. ❑ Real Time Clock (RTC) One T9934 chip is used. The T9934 has 128 bytes of memory. Fourteen bytes of memory are used for the calendar and clock.
1.3 3.5-inch Floppy Disk Drive The 3.5-inch FDD is a thin, high-performance reliable drive that supports 720-KB (formatted) 2DD and 1.44-MB (formatted) 2HD 3.5-inch floppy disks. The FDD is shown in figure 1-4. Figure 1-4 3.5-inch FDD The specifications for the FDD are listed in table 1-1. Table 1-1 3.
1.4 2.5-inch Hard Disk Drive The HDD is a random access non-volatile storage device. It has a non-removable 2.5-inch magnetic disk and mini-winchester type magnetic heads. The computer supports the 520 MB. The HDD is shown in figure 1-5. Figure 1-5 2.5inch HDD Specifications for the HDD are listed in table 1-2. Table 1-2 2.
1.5 Keyboard The 82-(USA) or 84-(European) keyboard is mounted on the computer’s system unit. The keyboard is connected to the keyboard controller on the system board through a 25-pin flat cable. The computer pointer control stick, located in the center of the keyboard, provides convenient control of the cursor without requiring desk space for a mouse. The keyboard is shown in figure 1-6. See Appendix E for optional keyboard configurations.
1.6 DSTN Color LCD The DSTN Color Liquid Crystal Display (LCD) contains an LCD module, a Fluorescent Lamp (FL), and an FL inverter board. 1.6.1 DSTN Color LCD Module The DSTN color LCD is backlit and supports 640 x 480 pixels with a Video controller. This video controller includes the functions of Video Graphics Array (VGA). The built-in display controller supports 640 x 480 resolution with 64k colors capability on the internal LCD and up to 1024 x 768 resolution with 256 colors on an external CRT.
1.6.2 DSTN Color Fluorescent Lamp (FL) Inverter Board The FL inverter board supplies high frequency current to light the LCD’s Fluorescent Lamp. The specifications for the FL inverter are listed in table 1-4. Table 1-4 DSTN color FL inverter board specifications Item Input Output Specifications Voltage (V) 4 to 5.5 Power (W) 4.25 Voltage (Vrms) 1,100 Current (mA) 5.0/3.
1.7 Power Supply The power supply provides five kinds of voltages to the system board. The power supply has one microprocessor, operates at 500 KHz, and performs the following functions: 1. Determines if the AC cable or battery is connected to the computer. 2. Detects AC output and circuit malfunctions. 3. Controls the LED icon and speaker. 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.
1.8 Batteries The computer has three types of batteries: ❑ Main battery pack ❑ Backup battery ❑ Real Time Clock (RTC) battery Battery specifications are listed in table 1-6. Table 1-6 Battery specifications Battery name Material Output voltage Capacity Main battery Nickel Metal Hydride 12 V 2,600 mAH Backup battery Nickel Metal Hydride 7.2 V 110 mAH RTC battery Nickel Metal Hydride 3.6 V 30 mAH 1.8.
1.8.2 Battery Charging Control Battery charging is controlled by a power supply microprocessor that is mounted on the power supply. The microprocessor controls whether the charge is on or off and detects a full charge when the AC power cord and battery are attached to the computer. The system charges the battery using quick charge or trickle charge.
1.8.3 Backup Battery The backup battery maintains data for AutoResume. The power source used to back up the AutoResume data is determined according to the following priority: AC power > Main battery > Backup battery The backup battery is charged by the main battery or AC power cord. Table 1-8 shows the charging time and data preservation period of the backup battery.
2.1 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. 2. 3. 4. 5. 6. 7. System Board(s) VGA Board HDD I/F Board Floppy Disk Drive Hard Disk Drive Keyboard Display The Diagnostics Disk operations are described in Chapter 3 and detailed replacement procedures are given in Chapter 4. The following tools are necessary for implementing the troubleshooting procedures: 1. 2. 3. 4. 5. 6. 7. 8.
2.2 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, do the following: ❑ Verify with the customer that Toshiba MS-DOS is installed on the hard disk. NonToshiba operating systems can cause the computer to malfunction. ❑ Make sure all optional equipment is disconnected from the computer. ❑ Make sure the floppy disk drive is empty.
Figure 2-1 Troubleshooting flowchart (1/2) 100CS 2-3
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(s), then perform the appropriate troubleshooting procedures as follows: 2-4 1.
2.3 Power Supply Troubleshooting The computer’s power supply controls many functions and components in the computer. To determine if the power supply is functioning properly, start with Procedure 1 and continue with the other Procedures as instructed.
Procedure 2 Battery Icon Check The Battery icon shows the battery charging status. The Battery icon glows orange when the AC power cord is charging the computer’s battery pack. If the Battery icon glows green, the AC power cord is connected and the battery is fully charged. If the Battery icon glows orange, the AC power cord is connected and the battery is being charged. If the Battery icon does not glow, go to Check 1.
2.4 System Board and HDD I/F Board Troubleshooting This section describes how to determine if the system board and sound board are defective or not functioning properly. Start with Procedure 1 and continue with the other procedures as instructed.
Check 2 If the following error message is displayed on the screen, press any key as the message instructs. This error message appears when data stored in RAM under the resume function is lost because the battery has become discharged or the system board is damaged. Go to Procedure 3. WARNING: RESUME FAILURE. PRESS ANY KEY TO CONTINUE. If any other message appears, perform Check 3. Check 3 The IRT checks the system board. When the IRT detects an error, the system stops or an error message appears.
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 these steps: 1. Turn the computer on, then set to boot mode. 2. Turn the computer off. 3. Plug the printer port LED into the computer’s parallel port. 4. Hold the space bar down and turn the computer on. 5.
Table 2-1 Printer port LED boot mode status (1/2) LED status 01H Test item KBC initialization ROM checksum test 02H Message BIOS is damaged! ..... Special register initialization PIT test PIT ERROR PIT initialization 03H 2-10 — PIT function check MEMORY REFRESH ERROR TIMER CH.
Table 2-1 Printer port LED boot mode status (2/2) LED status Test item A6H Initialization of expansion ROM — C0H Password check — FFH Setup boot check FFH Boot load Check 1 Message *** Bad xxxx xxxx *** Check system. Then press [F1] key. — If the following error codes are displayed, go to Procedure 5.
Table 2-2 Printer port LED resume mode error status Error status Meaning of status F1H RAM BIOS error. F2H The system has optional ROM, or optional card (CGA, MDA). F5H Main memory checksum error. F6H Video RAM checksum error. F7H Extended memory checksum error. Procedure 4 Diagnostic Test Program Execution Check Execute the following tests from the Diagnostic Test Menu. Refer to chapter 3, Tests and Diagnostics , for more information on how to perform these tests. 1. 2. 3. 4. 5. 6.
2.5 Floppy Disk Drive Troubleshooting This section describes how to determine if the 3.5-inch floppy disk drive 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 .
Procedure 2 Diagnostic Test Program Execution Check The Floppy Disk Drive Diagnostic Test program is stored on the Diagnostics Disk. After loading Toshiba MS-DOS, run the diagnostic program. 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 described in table 2-3. Make sure the floppy disk in the FDD is formatted correctly and that the write protect tab is disabled.
Procedure 3 Connector Check and Replacement Check The 3.5-inch Floppy Disk Drive is connected to the system board by a flexible cable. This cable may be damaged or disconnected from the 3.5-inch FDD port. Perform the following checks: Check 1 Make sure the flexible cable is firmly connected to the 3.5-inch FDD. FDD PJ5 system board If this cable is disconnected, connect it to the system unit and repeat Procedure 2. If the FDD is still not functioning properly, perform Check 2.
2.6 Hard Disk Drive Troubleshooting To determine if the hard disk drive is functioning properly, perform the procedures below starting with Procedure 1. Continue with the other procedures as instructed. Procedure 1: Partition Check Procedure 2: Message Check Procedure 3: Format Check Procedure 4: Diagnostic Test Program Execution Check NOTE: The contents of the hard disk will be erased when the HDD troubleshooting procedures are executed.
Procedure 2 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, perform Check 2.
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 Using the Toshiba MS-DOS system disk, partition the hard disk using the FDISK command. Format the hard disk using FORMAT C:/S/U to transfer the system program to the HDD. If the following message appears on the display, the HDD is formatted.
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 be displayed; perform Check 1. The error codes and statuses are described in table 2-4. If an error code is not generated, the HDD is operating properly.
2.7 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. Refer to chapter 3, nostics, for more information on how to perform the test program.
2.8 Display and VGA Board 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: Contrast Control Check Procedure 2: External CRT Check Procedure 3: Diagnostic Test Program Execution Check Procedure 4: Connector Check Procedure 5: Replacement Check Procedure 1 Contrast Control Check Contrast is changed by the contrast dial.
Procedure 4 Connector Check The Display unit has an LCD module, FL, Display switch, and FL inverter board. The FL and FL inverter board are connected by two cables. The LCD module and system board are connected by two signal cables as shown below. Any of these cables may be disconnected. Disassemble the display unit and check the following cable connections. Refer to chapter 4. Replacement Procedures , for more information about how to disassemble the computer.
Procedure 5 Replacement Check The FL, FL inverter board, LCD module, 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 1. If characters are not displayed clearly, perform Check 3. If some screen functions do not operate properly, perform Check 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 11 programs that are grouped into the Service Program Module (DIAGNOSTIC TEST MENU) of the Test Program Module (DIAGNOSTIC TEST). NOTES: To start the diagnostics, follow these steps: 1. Check all cables for loose connections. 2.
The DIAGNOSTIC TEST MENU contains the following functional tests: ❑ SYSTEM TEST ❑ MEMORY TEST ❑ KEYBOARD TEST ❑ DISPLAY TEST ❑ FLOPPY DISK TEST ❑ PRINTER TEST ❑ ASYNC TEST ❑ HARD DISK TEST ❑ REAL TIMER TEST ❑ NDP TEST ❑ EXPANSION TEST You will need the following equipment to perform some of the computer Diagnostic test programs. ❑ The Diagnostics Disk (All tests) ❑ A formatted working disk for the floppy disk drive test (All tests) ❑ 3.5-inch 2HD/2DD disk for external 3.
3.2 Executing the Diagnostic Test Toshiba MS-DOS is required to run the DIAGNOSTICS PROGRAM. To start the DIAGNOSTIC PROGRAM follow these steps: 1. Insert the Diagnostics disk into the computer’s floppy disk drive and turn on the computer. The following menu will appear: TOSHIBA personal computer xxx DIAGNOSTICS version X.XX (c) copyright TOSHIBA Corp.
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 xxx DIAGNOSTICS version X.XX (c) copyright TOSHIBA Corp.
4. Select the desired subtest number from the subtest menu and press The following message will appear: TEST LOOP Enter. : YES Selecting YES increases the pass counter by one each time the test cycle ends and also restarts the test cycle. Selecting NO returns the subtest menu to the main menu after the test is complete. 5. The following message will appear: ERROR STOP : YES Then, use the left or right arrow keys to move the cursor to the desired option and press Enter.
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. 1 3-6 Test name SYSTEM Subtest No.
Table 3-1 Subtest names (2/2) No. Subtest No.
3.4 System Test To execute the System Test select 1 from the DIAGNOSTIC TEST MENU, press Enter, and follow the directions displayed on the screen. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 ROM checksum The ROM checksum tests the system board from address F0000h to FFFFFh (64KB). Subtest 02 Not used Subtest 03 Not used Subtest 04 Not used Subtest 05 Thermistor check This subtest checks the thermistor that controls CPU temperature.
3.5 Memory Test To execute the Memory Test select 2 from the DIAGNOSTIC TEST MENU, press Enter, and follow the directions displayed on the screen. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 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, and 0000h.
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 8 MB, 16 MB, and 32 MB. After selecting subtest 05, the following message will appear: Extended memory size (1:8 MB,2:16 MB,3:32 MB)? Select the number that corresponds to the memory card installed in the computer.
3.6 Keyboard Test To execute the Keyboard Test, select 3 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions displayed on the screen. The Keyboard test contains four subtests that test the computer’s keyboard actions. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 Pressed key display (82/84) NOTE: The Num Lock and the Overlay mode must be off to execute this subtest.
Subtest 02 Pressed key code display When a key is pressed, the scan code, character code, and keytop 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 scan codes, character codes, and keytop names are shown in Appendix D.
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
3.7 Display Test To execute the Display Test, select 4 from the DIAGNOSTIC TEST MENU, press Enter, and follow the directions displayed on the screen. The Display test contains eleven subtests that test the computer’s display in various modes. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 VRAM Read/Write This subtest writes constant data FFFFh, AAAAh, 5555h, 0000h and address data to video RAM (1MB).
After pressing Enter, 16 colors or 16 gray scales of mode 13h appear in the 320x200 graphics mode as shown below: 320*200 GRAPHICS DISPLAY [13] BLACK BLUE GREEN CYAN RED MAGENTA BROWN WHITE GRAY LIGHT BLUE LIGHT GREEN LIGHT CYAN LIGHT RED LIGHT MAGENTA YELLOW INTENSE WHITE PRESS [Enter] KEY Pressing Enter toggles between the two tests. To exit this subtest and return to the DISPLAY TEST menu, press Break.
Subtest 04 80x25/30 Character Display (mode 3, 12) In this subtest, the character string is displayed shifting one character to the right, line by line in the 80x25 and 80x30 character modes as shown below. Pressing Enter toggles between tests. To exit this subtest and return to the DISPLAY TEST menu, press Ctrl + Break . Subtest 05 320x200 Graphics Display (mode 4, D) This subtest displays two color sets for the color display in 320x200 dot graphics mode 4 and D.
Subtest 06 640x200 Graphics Display (mode 6, E) This subtest displays even dots, odd dots, and all dots in the 640x200 dot graphics mode 6 and E as shown below: 640*200 GRAPHICS DISPLAY : [X] EVEN DOTS DRIVEN ODD DOTS DRIVEN ALL DOTS DRIVEN PRESS [Enter] KEY To exit this subtest and return to the DISPLAY TEST menu, press Break.
Subtest 08 Display Page This subtest confirms that the pages can be changed in order from page 0 through page 7 in 40*25 character mode. DISPLAY PAGE 0 0000000000000000000000000000000000000000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0000000000000000000000000000000000000000 Pressing Ctrl + Break exits this subtest, after completion of the test, and returns to the DISPLAY TEST menu. Subtest 09 H Pattern Display/Border Color This subtest displays H characters on the entire screen, as shown below.
Subtest 10 LED/DAC Pallet This subtest checks the LED indicator (Caps Lock, Overlay and Num Lock) by key operation. [ Caps/Num/Overlay LED test ] (1) Press [Caps Lock ] key !...Caps (on/off) (2) Press [Fn + Num Lock] key !...Num (on/off) (3) Press [Fn ] key !...Overlay(on/off) PRESS [Enter] KEY Press Enter to display the following two messages: After pressing Enter, this subtest writes the ‘2A’ and ‘15’ data to 6 bit of 256x3 (RGB), then reads new data and compares the result with the original data.
3.8 Floppy Disk Test NOTE: Before running the floppy disk test, prepare a formatted work disk. Remove the Diagnostics Disk and insert a 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 computer’s external floppy disk drive.
Subtest 02 Sequential Read/Write This subtest continuously writes data pattern B5ADADh to all the specified tracks selected in subtest 01. The data is then read and compared to the original data. Subtest 03 Random Address/Data This subtest writes random data to random addresses on all tracks defined in subtest 01. The data is then read and compared to the original data. Subtest 04 Write Specified Address This subtest writes specified data to a specified track, head, and address.
3.9 Printer Test To execute the Printer Test select 6 from the DIAGNOSTIC TEST MENU, press Enter, and follow the directions displayed 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 from the DIAGNOSTIC TEST MENU. Answer each of the following questions with an appropriate response to execute the test.
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: PRINTER TEST 1. THIS LINE SHOWS NORMAL PRINT. 2. THIS LINE SHOWS DOUBLE-WIDTH PRINT. 3. THIS LINE SHOWS COMPRESSED PRINT. 4. THIS LINE SHOWS EMPHASIZED PRINT. 5. THIS LINE SHOWS DOUBLE-STRIKE PRINT. 6. ALL CHARACTERS PRINT !"#$%&'()*+,.
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 four subtests that test the computer’s asynchronous communication functions. Move the highlight bar to the subtest you want to execute and press Enter.
Subtest 03 Point to point (Send) NOTE: To execute this subtest, two machines must be connected with an RS-232-C direct cable. One machine should be set as “send”(subtest 03) and the other set as ‘receive’ (subtest 04). The wiring diagram for the RS-232-C direct cable is described in Appendix F. This subtest sends 20h through 7Eh data to the receive side, then receives the sent data and compares it to the original data.
3.11 Hard Disk Test To execute the Hard Disk Test select 8 from the DIAGNOSTIC TEST MENU, press Enter,, and follow the directions displayed on the screen. The hard disk test contains ten subtests that test the computer hard disk drive functions. The following messages will appear after selecting the hard disk test from the DIAGNOSTIC TEST MENU.
The following message will appear during each subtest. 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 of the STATUS number indicates the drive being tested and the last two digits indicate the error status code as explained in table 3-3.
Subtest 04 Cross Talk & Peak Shift This subtest writes eight types of worst pattern data (shown below) to a cylinder, then reads the data while moving from cylinder to cylinder.
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.
Subtest 03 Real Time Carry NOTE: 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 : 12-31-1994 Current time : 23:59:58 Pressing Enter displays the following: Current date : 01-01-1995 Current time : 00:00:00 PRESS [Enter] KEY TO EXIT TEST Press Ctrl + Break to exit.
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 NDP: ❑ ❑ ❑ ❑ ❑ Control word Status word Bus Addition Multiplication Press Ctrl + Break to exit.
3.14 EXPANSION Test NOTE: To execute this subtest, the PCMCIA wraparound connector is required.
3.15 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 (2/2) Device name Error code ASYNC (cont.
3.16 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 controller (HDC) error status number and the last four digits are not used.
Table 3-4 Error register contents Bit 7 Name BBK1 (Bad block Description “0” Other. “1” A bad block mark is detected. mark) 6 UNC “0” There is no uncorrectable data error. (Uncorrectable) “1” Uncorrectable data error has been detected. 5 —— Not used. 4 IDNF “0” Other. (Identification) “1” There was no ID field in the requested sector. 3 —— Not used. 2 ABRT (Abort) “0” Other. “1” Illegal command error or a drive status error occurs.
3.17 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 This 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 this program is executed.
2. Good track FORMAT This option formats a specified cylinder and track as a good track. If a good track is formatted as a bad track, use this option to change the track to a good track. 3. Bad track FORMAT This option formats a specified cylinder and track as a bad track. If a bad track is detected, use this option to label it as a bad track. 4. Bad track CHECK This option searches the hard disk for bad tracks by reading data to all the tracks on the hard disk.
The following selections also appear in succession at the bottom of the screen : Drive number select (1:#1,2:#2) ? (a) Select a drive number and press Enter. The following message will appear: Interleave number (1/1 ~ 8) ? (b) Select an interleave number, 1 ~ 8 and press Enter. Pressing only Enter selects 1. Unlock format select (1:no/2:yes) (c) Select whether the disk has an unlock format. NOTE: This option appears only when an HDD manufactured by JVC is installed.
2. Good track FORMAT If a good track has been erroneously formatted as a bad track, you can use this subtest to reformat the track as a good track. To format a track as a good track, enter the number for 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. 3.
3.18 Head Cleaning 3.18.1 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. 3.18.2 1. Operations 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.
3.19 Log Utilities 3.19.1 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 information will be lost. The error information is displayed in the following order: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 3.19.2 1.
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 outputs 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.
3.20 Running Test 3.20.1 Function Description This function automatically executes the following tests in sequence: 1. 2. 3. 4. 5. 6. 7. 8.
3.21 Floppy Disk Drive Utilities 3.21.1 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 command. This program can format a 5.25-inch or 3.5-inch floppy disk in the following formats: 2. (a) 2D: Double-sided, double-density, 48/67.5 TPI, MFM mode, 512 bytes, 9 sectors/track.
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-2DD,1:2D-2D,2:2D-2HD,3:2HD-2HD) ? (c) Select a media/drive type number and press Enter. A message similar to the one below will be displayed: Warning : Disk data will be destroyed. Insert work 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. [ FDD TYPE ] : TRACK = XXX [ FDD TYPE ] : HEAD = X [ FDD TYPE ] : SECTOR = XX Copy start [[ track,head (d) = XXX X ]] Remove the source disk from the FDD, insert a formatted work disk, and press any key. The [[ track, head = XXX X ]] message will appear and start copying to the target disk.
3.22 System Configuration 3.22.1 Function Description The System Configuration program contains the following configuration information for the computer: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 3.22.
3.23 SETUP 3.23.1 Function Description This program displays the current system setup information as listed below: 1. Memory (a) Total (b) Base (c) Extended Memory (d) Shadow BIOS ROM 2. Display (a) Display Adapter (b) LCD Display Mode (c) VGA Segment Address (d) LCD Display Colors (e) Power On Display (f) Text Mode Stretch 3. Hard Disk (a) HDD Mode 4. Password 5. I/O Ports (a) Serial Port (b) Parallel Port 6.
3.23.2 Accessing the SETUP Program Selecting 0 from the DIAGNOSTICS MENU and pressing Enter displays the following: SYSTEM SETUP MEMORY BIOS version = x.
2. To make other changes, press N. Repeat the steps above. 3. To accept the changes, press Y. NOTE: You can press Esc to quit at any time without saving changes. SETUP asks you to confirm that you don’t want to save your changes. The Factory Preset Configuration When you access SETUP, the current configuration is displayed. 1. To show the factory preset configuration, press Home. 2. To accept the default settings, press End and then press Y.
2. Display This group of options helps you configure the computer’s display. (a) Display Adapter This field displays the internal controller for the VGA internal display. Only VGA compatible is displayed. You cannot change it. (b) LCD Display Mode The LCD displays text in 80 characters by 25 lines and graphics in 640 by 480 pixels for either Color or Monochrome mode. Use this option to set the computer’s display mode to Color or Monochrome . Color Monochrome (c) Selects color mode.
NOTE: When starting the computer in Resume mode, the last configuration is remembered. If data does not appear on the display you are using after starting in Resume mode, press Fn+F5. Pressing Fn+F5 changes the display setting as follows: internal LCD to simultaneous to external CRT. (f) Text Mode Stretch Text mode stretch enables a larger display area of 640 x 480 pixels in text mode. Disabling this function reduces the display area to the standard 640 x 480 pixels. 3.
(a) Serial Port This option allows you to set the COM level, COM1 or COM2, for the serial port and PC card slot. The serial port interrupt request level (IRQ) and I/O port base address for each COM level is shown below: COM level Interrupt level I/O address COM1 4 3F8h COM2 3 2F8h COM3 4 3E8h COM4 3 2E8h Not used (Serial port default) (Disables port) NOTE: Do not assign the same interrupt request level and I/O address to serial port and PC card.
(b) CPU Cache Use this feature to enable or disable the CPU cache. Enabled Enables the CPU cache. (Default) Disabled Disables the CPU cache. When enable is selected, a subwindow similar to the one below is displayed to let you select the cache write policy. The options for this setting are Write-back (default) and Write-through .
User Setting (d) This option allows you to set the battery save parameters on the sub-window, BATTERY SAVE OPTIONS. When you select this option, the automatic setting feature (Full Power or Low Power) is disabled and the user-preferred parameters become effective. The default setting in the sub-windows depends on the Battery Save Mode: Low Power (Long Life) or Full Power (Normal Life) . For LCD Brightness details, see Battery Save Options below.
System Auto Off Use this option to enable or disable the system automatic off function in Resume mode when you are working in DOS. In Boot mode, it is disabled and not displayed. 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. LCD Brightness Use this option to set the level of LCD brightness. Bright Full brightness for maximum visibility.
When Alarm Volume is selected, the subwindow below is displayed to let you enable or disable certain functions. ALARM VOLUME OPTIONS LOW BATTERY Alarm = Panel Close Alarm = (g) Enable Enable Enabled Enables the feature. (Default) Disabled Disables the feature. System Beep Use this feature to enable or disable the system beep. (h) Enabled Enables the feature. (Default) Disabled Disables the feature.
(j) Keyboard This option lets you change the keyboard layout and set the Fn key equivalent when you are using an external keyboard. Selecting this option displays the following subwindow. Keyboard Int. Keyboard key layout = Ext. Keyboard "Fn" key equivalent = Normal Disabled Int. Keyboard layout This option lets you select the arrangement of the Caps Lock, Ctrl and Alt keys according to the following illustrations: Ext.
(k) Pointing Devices This option enables or disables the AccuPoint. (l) Auto selected The AccuPoint is disabled when a PS/2 mouse or serial mouse is connected, otherwise the AccuPoint is enabled. (Default) Simultaneous If a PS/2 mouse or serial mouse is connected to an optional port replicator, both the AccuPoint and the external mouse are enabled. Boot Priority Use this option to select the disk drive priority for boot up.
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 removing the battery pack, then follow the lines on the chart to determine which FRU you must remove next in order to repair the one you think is causing the computer to operate improperly.
Safety Precautions Before you begin disassembly, read the following safety precautions and observe them carefully as you work. DANGER: 1. Always use the lithium ion battery pack or back-up battery that is authorized by Toshiba or compatible with the unit. Since other battery packs have different specifications, they may be incompatible with the unit, and may burst or explode. Heating or disassembling the battery pack could cause leakage of alkaline solution.
Before You Begin Look over the procedures in this section before you begin disassembling the computer. Familiarize yourself with the disassembly and reassembly steps. Begin each procedure by removing the AC power cord and the battery pack as instructed in section 4.2, The Battery Pack: 1. Do not disassemble the computer unless it is operating abnormally. 2. Use only the correct and approved tools. 3.
Disassembly Procedures The computer has two basic types of cable connectors: ❑ Pressure Plate 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 connector. To connect the cable to a Pressure Plate connector, make sure the pressure plate is fully lifted and slide the cable into the connector.
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 disassemble and reassemble the computer: ❑ One M2 Phillips screwdriver to remove and replace screws. ❑ Tweezers, to lift out screws that you cannot grasp with your fingers.
4.2 The Battery Pack Removing the Battery Pack To remove the battery pack, follow the steps below and refer to figures 4-1 and 4-2. 1. Turn the computer off. 2. Remove all cables connected to the computer and turn the computer over. 3. Push the battery cover lock to release the battery cover . 4. Push the cover forward until it stops (about one centimeter or half an inch). Figure 4-1 Releasing the battery cover 5. Lift off the cover. 6.
Installing the Battery Pack To install the battery pack, follow the steps below and refer to figure 4-3. WARNING: The battery is a nickel metal hydride battery and should be replaced only by your dealer or by a Toshiba service representative. The battery can explode if not properly replaced, used, handled, or disposed of. Dispose of the battery as required by local ordinances or regulations. Use only batteries recommended by Toshiba as replacements. 1. Turn the computer off.
4.3 Optional PC Card Removing an Optional PC card To remove an optional PC card make sure the computer is in boot mode then follow the steps below and refer to figure 4-4. 1. Turn the computer off. Disconnect the AC power cord and all external cables connected to the computer. 2. Remove the battery pack as described in section 4.2. 3. Press the eject button on the computer (the top button for the top card and the bottom button for the bottom card). The card will pop out slightly for removal.
Installing an Optional PC Card To install a PC card, follow the steps below and refer to figure 4-5. NOTE: Before you install the PC card, make sure the computer is in boot mode. 1. Turn the computer off. Disconnect the AC power cord and all external cables connected to the computer. 2. Insert the PC card as shown in figure 4-5. Figure 4-5 Installing the PC card 100CS 3. When the card is almost fully seated, you will feel some resistance.
4.4 Optional Memory Module Removing an Optional Memory Module To remove an optional memory module, make sure the computer is in boot mode then follow the steps below and refer to figures 4-6 and 4-7. 1. Turn the computer off. Disconnect the AC power cord and all external cables connected to the computer. 2. Remove the battery pack and optional PC card as described in sections 4.2 and 4.3. 3. Turn the computer upside down. 4. Remove two M2x4 screws securing the memory module socket cover . 5.
Installing an Optional Memory Module To install an optional memory module, make sure the computer is in boot mode then follow the steps below and refer to figures 4-6 and 4-8. 1. Position the connector on the bottom of the module over the corresponding connector on the computer (align the holes on the side of the module over the screw holes on the brace). NOTE: Do not touch the connectors on the memory module or on the computer. Debris on the connectors may cause memory access problems. 2.
4.5 Hard Disk Drive Removing the HDD To remove the HDD, follow the steps below and refer to figures 4-9 and 4-10. 1. Turn the computer off. Disconnect the AC power cord and all external cables connected to the computer. 2. Remove the battery pack, optional PC card, and optional memory module as described in sections 4.2, 4.3, and 4.4. 3. Remove two M2.5x6 screws securing the HDD frame to the computer. 4. Pull the frame forward by its handle to disconnect the HDD. 5.
6. Remove the metal cover . 7. Remove four flat-head M3x4 screws securing the frame to the HDD and separate the HDD from the frame. Figure 4-10 Removing the HDD from the frame Installing the HDD To install the HDD, follow the steps below and refer to figures 4-9 and 4-10. 100CS 1. Secure the frame to the HDD with four flat-head M3x4 screws . 2. Attach the metal cover . 3. Seat the HDD in the computer and press to secure the connection. 4. Secure the HDD frame to the computer with two M2.
4.6 Keyboard Removing the Keyboard To remove the keyboard, follow the steps below and refer to figures 4-11 and 4-12. 1. Turn the computer off. Disconnect the AC power cord and all external cables connected to the computer. 2. Remove the battery pack, optional PC card, optional memory module, and HDD as described in sections 4.2 through 4.5. 3. Release 14 latches on the base cover and remove it. Figure 4-11 Removing the keyboard base 4. 4-14 Lift out the keyboard and set it on the wrist rest.
5. Remove five M2.5x6 screws securing the metal cover and lift out the cover. Note that one screw secures the ground cable. Figure 4-12 Removing the metal cover and disconnecting the keyboard cable 6. Disconnect the keyboard cable from PJ13 on the system board. Installing the Keyboard To install the keyboard, follow the steps below and refer to figures 4-11 and 4-12. 100CS 1. Connect the keyboard cable to PJ13 on the system board. 2.
4.7 Sub-battery and VGA Board Removing the Sub-battery and VGA board To remove the sub-battery and VGA board, follow the steps below and refer to figures 4-13 to 4-15. 1. Turn the computer off. Disconnect the AC power cord and all external cables connected to the computer. 2. Remove the battery pack, optional PC card, optional memory module, HDD, and keyboard as described in sections 4.2 through 4.6. 3. Disconnect the sub-battery from PJ503 and remove the battery.
4. Disconnect the VGA board connector from system board connector PJ16. Figure 4-14 Removing the VGA board 5. Rotate the board out and disconnect the VGA cable from PJ302 on the VGA board.
Installing the Sub-battery and VGA Board To install the sub-battery and VGA board, follow the steps below and refer to figures 4-13 to 4-15. CAUTION: Be sure to match the colors of the sub-battery and LCD hinge connectors to their corresponding connectors on the system board. The LCD will not function if the cables are incorrectly connected. 4-18 1. Connect the VGA cable to PJ302 on the VGA board. 2. Seat the sub-battery and connect it to PJ503 on the system board. 3.
4.8 Top Cover and Display Assembly Removing the Top Cover and Display Assembly To remove the top cover and display assembly, follow the steps below and refer to figures 16 to 4-18. 4- 1. Turn the computer off. Disconnect the AC power cord and all external cables connected to the computer. 2. Remove the battery pack, optional PC card, optional memory module, HDD, keyboard, and sub-battery and VGA board as described in sections 4.2 through 4.7. 3. Turn the computer upside down and remove three M2.
5. Disconnect the Real Time Clock battery from PJ3 on the system board and remove the battery. WARNING: If you replace the RTC battery, be sure to use only batteries recommended by Toshiba. Installation of the wrong battery can cause the battery to explode or otherwise cause damage. Figure 4-17 Removing the RTC battery 6. Disconnect the panel close sensor cable from PJ10 and the LED cable from PJ14 on the system board. 7. Remove one M2.5x8 screw from the sub-battery base.
8. Release six latches securing the top cover and remove the top cover and display assembly. Installing the Top Cover and Display Assembly To install the top cover, follow the steps below and refer to figures 4-16 to 4-18. 1. Seat the top cover and display assembly . 2. Secure one M2.5x8 silver screw on sub-battery base. 3. Connect the LED panel cable to PJ14. 4. Connect the panel close sensor cable to PJ10 on the system board. 5. Connect the Real Time Clock battery to PJ3 on the system board.
4.9 Membrane Switch Removing the membrane switch To remove the membrane switch, follow the steps below and refer to figures 4-19 and 4-20. 1. Turn the computer off. Disconnect the AC power cord and all external cables connected to the computer. 2. Remove the battery pack, optional PC card, optional memory module, HDD, keyboard, sub-battery and VGA board, and top cover and display assembly as described in sections 4.2 through 4.8. 3.
7. The membrane switch is held in place by plastic pins. Carefully lift the membrane switch clear of the pins to remove it. Figure 4-20 Removing the membrane switch 8. Separate the HDD interface board from its base. Installing the membrane switch To install the membrane switch, follow the steps below and refer to figures 4-19 and 4-20. 1. Connect the HDD interface board flexible cable to PJ6 on the system board. 2. Seat the membrane switch and secure it partially with tape. 3.
4.10 Diskette Drive (FDD) Removing the FDD To remove the FDD, follow the steps below and refer to figures 4-21 and 4-22. 1. Turn the computer off. Disconnect the AC power cord and all external cables connected to the computer. 2. Remove the battery pack, optional PC card, optional memory module, HDD, keyboard, sub-battery and VGA board, top cover and display assembly, and membrane switch as described in sections 4.2 through 4.9. 3. Disconnect the flexible cable from PJ5 on the system board . 4.
5. Remove four M2x2 screws securing the frame to the drive and lift off the frame. 6. Disconnect the flexible cable from the drive. Figure 4-22 Removing the diskette drive frame Installing the FDD To install the FDD, follow the steps below and refer to figures 4-21 and 4-22. 1. Connect the flexible cable to the FDD. 2. Secure the frame to the diskette drive with four M2x2 screws . 3. Engage the latches on the frame with corresponding notches on the computer. 4.
4.11 AC PS Unit Removing the AC PS unit To remove the AC PS unit, follow the steps below and refer to figures 4-21 and 4-24. 1. Turn the computer off. Disconnect the AC power cord and all external cables connected to the computer. 2. Remove the battery pack, optional PC card, optional memory module, HDD, keyboard, sub-battery and VGA board, top cover and display assembly, membrane switch, and FDD as described in sections 4.2 through 4.10. 3.
9. Remove one M2.5x6 screw securing the holder assembly (underneath the AC PS unit) and lift out the assembly. Figure 4-24 Removing the holder assembly 10. Lift the power cord socket straight up until it clears its slots and remove the AC PS unit. Installing the AC PS unit To install the AC PS unit, follow the steps below and refer to figures 4-23 and 4-24. 1. Seat the power cord socket in its slots. 2. Seat the holder assembly , secure it with two M2.5x6 screws , and replace the tape. 3.
4.12 System Board Removing the System Board To remove the system board, follow the steps below and refer to figure 4-25. 1. Turn the computer off. Disconnect the AC power cord and all external cables connected to the computer. 2. Remove the battery pack, optional PC card, optional memory module, HDD, keyboard, sub-battery and VGA board, top cover and display assembly, membrane switch, FDD, and AC PS unit as described in sections 4.2 through 4.11. 3. Remove six M2.5x6 screws , one M2.
4.13 Display Mask Removing the Display Mask To remove the display mask, follow the steps below and refer to figure 4-26. 1. Turn the computer off. Disconnect the AC power cord and all external cables connected to the computer. 2. Remove the battery pack, optional PC card, and optional memory module as described in sections 4.2, 4.3, and 4.4. NOTE: It is not necessary to remove the display assembly. 3. Remove two rubber seals from the display hinges to expose two screws securing the display mask . 4.
Installing the Display Mask To install the display mask, follow the steps below and refer to figure 4-26. 4-30 1. Set the display mask in place and secure the latches beginning with the one latch at the smaller display support and three latches at the larger display support. 2. Continue along the bottom of the display ( three latches ), on each side ( four latches), and across the top ( six latches ). 3. Secure the display mask with two M2.5x6 screws . 4.
4.14 Fluorescent Lamp (FL) Inverter Board Removing the DSTN FL Inverter Board To remove the FL inverter board, follow the steps below and refer to figure 4-27. 1. Turn the computer off. Disconnect the AC power cable and all external cables connected to the computer. 2. Remove the battery pack, optional PC card, optional memory module, and display mask as described in 4.2, 4.3, 4.4, and 4.13. 3. Remove tape covering the FL inverter board cables . 4. Remove two M2.
Installing the DSTN FL Inverter Board To install the FL inverter board, follow the steps below and refer to figure 4-27. 4-32 1. Seat the FL inverter board . 2. Connect the FL inverter cable to CN1 and the FL cable to CN2 on the FL inverter board and seat the board. 3. Connect the contrast control board cable and seat the board. 4. Secure the contrast control board with one M2.5x6 screw . 5. Secure the FL inverter board with two M2.5x6 screws . 6.
4.15 Liquid Crystal Display (LCD) Module Removing the Color LCD Module To remove the LCD module, follow the steps below and refer to figure 4-30. 1. Turn the computer off. Disconnect the AC power cord and all external cables connected to the computer. 2. Remove the battery pack, optional memory module, optional PC card, display mask and FL inverter board as described in sections 4.2, 4.3, 4.4, 4.13, and 4.14. 3. Remove four M2.5x6 screws securing the LCD module to the LCD cover.
4.16 DSTN FL CAUTION : When you remove the FL, be careful not to let any dust or other foreign matter enter the display panel components. Removing the DSTN FL To remove the FL, follow the steps below. Refer to figures 4-29 to 4-32. 1. Turn the computer off. Disconnect the AC adapter and all external cables connected to the computer. 2. Remove the battery pack, optional memory module, optional PC card, display mask,FL inverter board and LCD module as described in sections 4.2, 4.3, 4.4, 4.13, 4.
6. Turn the LCD module over and remove two M2x3.4 screws securing the FL holder. Figure 4-30 Removing screws 7. Unthread the cable, which is connected to the FL tube. Be sure no dust or debris contaminates the unit.
8. Gently disengage the FL holder and lift it out. 9. Lift the end of the reflector sheet covering the FL tube and lift the FL tube out. Be careful not to pull or apply tension to the reflector sheet. Figure 4-32 Removing the FL tube Installing the DSTN FL To install the FL unit, follow the steps below and refer to figures 4-29 to 4-32. 4-36 1. Seat the FL tube, gently press it securely in place and cover it with the end of the reflector sheet.
Appendix A Handling the LCD Module Precautions for Handling the LCD Module The computer’s LCD module can be easily damaged during assembly or disassembly. Therefore, please 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 properly aligned and maximum visibility of the display is maintained. 2.
3. If the panel’s surface gets dirty, wipe it with cotton or a soft cloth. If it is still dirty, try breathing on the surface to create a light condensate and wipe it again. If the surface is very dirty, we recommend a CRT cleaning agent. Apply the agent to a cloth and then wipe the panel’s surface. Do not apply cleanser directly to the panel. A-2 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.
100CS 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. 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. 10. A-4 Do not disassemble the LCD module. Disassembly can cause malfunctions. 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.
Appendix B Board Layout B.
B.
Table B-1 System board ICs and connectors (front) Mark Number Name (A) IC1 CPU (B) IC2 SCPCNT GA (C) IC3 SISCNT GA (D) IC4 to IC7 (E) IC12 SI (F) IC27 I/O GA (G) IC29 PC Card Controller (H) IC514 PS Micon (I) PJ1 Thermistor Connector (J) PJ2 Exp.
Appendix C C.1 Pin Assignments PJ1 Thermistor Connector (3-pin) Table C-1 Thermistor connector pin assignments (3-pin) Pin No. C.2 Signal name I/O Pin No. 02 01 ACPUTH I 03 GND - Signal Name I/O NC - PJ2 Expansion Memory Connector (140-pin) Table C-2 Expansion memory connector pin assignments (140-pin) Pin No. 100CS Signal name I/O Pin No.
Table C-2 Expansion memory connector pin assignments (140-pin) (continued) Pin No. C-2 Signal name I/O Pin No.
Table C-2 Expansion memory connector pin assignments (140-pin) (continued) Pin No. C.3 Signal name I/O Pin No.
C.4 PJ4 PRT/RGB I/F Connector (30-pin) Table C-4 PRT/RGB I/F connector pin assignments (30-pin) C.5 Pin No. Signal name I/O Pin No.
C.6 PJ7 HDD Connector (90-pin) Table C-6 HDD connector pin assignments (90-pin) Pin No. 100CS Signal name I/O Pin No.
Table C-6 HDD connector pin assignments (90-pin) (continued) Pin No. C.7 Signal name I/O Pin No. Signal Name I/O 73 GND - 74 RVCC - 75 GND - 76 VCC - 77 GND - 78 VCC - 79 GND - 80 VCC - 81 GND - 82 VCC - 83 GND - 84 VCC - 85 GND - 86 VCC - 87 GND - 88 VCC - 89 GND - 90 VCC - PJ8 Asynchronous Connector (9-pin) Table C-7 Asynchronous connector pin assignments (9-pin) Pin No. C-6 Signal name I/O Pin No.
C.8 PJ9 P-REP Connector (176-pin) Table C-8 P-REP connector pin assignments (176-pin) Pin No. 100CS Signal name I/O Pin No.
Table C-8 P-REP connector pin assignments (176-pin) (continued) Pin No. C-8 Signal name I/O Pin No.
Table C-8 P-REP connector pin assignments (176-pin) (continued) Pin No. C.9 Signal name I/O Pin No.
C.11 PJ13 Keyboard Connector (25-pin) Table C-11 Keyboard connector pin assignments (25-pin) C.12 Pin No. Signal name I/O Pin No.
C.13 PJ15 PC Card Connector (140-pin) Table C-13 PC card connector pin assignments (140-pin) Pin No. 100CS Signal name I/O Pin No.
Table C-13 PC card connector pin assignments (140-pin) (continued) Pin No. C-12 Signal name I/O Pin No.
C.14 PJ16 VGA Connector (120-pin) Table C-14 VGA connector pin assignments (120-pin) Pin No. 100CS Signal name I/O Pin No.
Table C-14 VGA connector pin assignments (120-pin) (continued) Pin No. C-14 Signal name I/O Pin No.
Appendix D Keyboard Scan/Character Codes Table D-1 Scan codes (set 1 and set 2) (1/3) 100CS Cap No.
Table D-1 Scan codes (set 1 and set 2) (2/3) D-2 Cap No. Keytop Code set 1 Make Break Code set 2 Make 41 ‘ “ 28 A8 52 F0 52 43 44 Enter Shift (L) 1C 2A 9C AA 5A 12 F0 F0 5A 12 45 46 No.102 key Z 56 2C D6 AC 61 1A F0 F0 61 1A 47 48 X C 2D 2E AD AE 22 21 F0 F0 22 21 49 50 V B 2F 30 AF B0 2A 32 F0 F0 2A 32 51 52 N M 31 32 B1 B2 31 3A F0 F0 31 3A *2 53 54 , < .
Table D-1 Scan codes (set 1 and set 2) (3/3) Cap No.
Table D-2 Scan codes with left Shift key Cap No.
Table D-4 Scan codes with Fn key Cap No. Keytop Code set 1 Make Break Code set 2 Make 43 58 ENT CTRL E0 E0 1C 1D E0 E0 9C 9D E0 E0 5A 14 E0 E0 F0 F0 5A 14 60 121 LALT ARROW E0 38 E0 B8 E0 11 E0 F0 122 NUMERIC Break 05 C5 77 F0 11 77 05 C5 7E F0 7E Table D-5 Scan codes in overlay mode Cap No.
Appendix E Key Layouts E.1 United States (US) Keyboard Figure E-1 US keyboard E.
E.3 German (GR) Keyboard Figure E-3 GR keyboard E.
E.5 Spanish (SP) Keyboard Figure E-5 SP keyboard E.
E.7 Scandinavian (SC) Keyboard Figure E-7 SC keyboard E.
Appendix F Wiring Diagrams F.1 Printer Wraparound Connector (9) +PD7 (15) –ERROR (8) +PD6 (14) –AUTFD (7) +PD5 (13) +SELECT (6) +PD4 (16) –PINIT (5) +PD3 (1) (10) –STROBE –ACK (4) +PD2 (12) +PE (3) +PD1 (17) –SLIN (2) +PD0 (11) +BUSY Figure F-1 Printer wraparound connector F.2 RS-232-C Wraparound Connector (3) TD (2) RD (7) RTS (8) (1) CTS CD (4) DTR (6) (9) DSR RI Figure F-2 RS-232-C wraparound connector F.
F.
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: ❑ The diagnostics disk for the 100CS. To overwrite BIOS with newer versions 1. Set the system to boot mode. 2. Turn off the power to the computer. 3. Remove the external cable and PC card. 4. Insert the the diagnostics disk into the FDD and turn on the power. 5.
7. When the BIOS rewrite is finished, eject the the diagnostics disk and press the reset switch to restart the system. To overwrite BIOS with older versions G-2 1. Set the system to boot mode. 2. Turn off the power to the computer. 3. Remove the external cable and PC card. 4. Turn the power on while holding down the F12 key. (Keep holding down the key until the system speaker sounds a beep.) 5. When the message is displayed, insert the the diagnostics disk into the FDD.
