The Toshiba T2000 is one of the lightest and most advanced portable computers available offering advanced computer technology, high speed, excellent legibility, IBM PC/AT compatibility, and battery operation. The T2000 is one of a new class of portables called notebook computers, the lightest portable computers available. The T2000 system unit has the following features: The Central Processing Unit (CPU) is an 80C286-12 16-bit microprocessor, operating at 12MHz (fast mode) and 6MHz (slow mode).
The T2000 Personal Computer is shown in Figure 1-1 and the T2000 system configuration is shown in Figure 1-2. Figure 1-1 T2000 personal computer Figure 1-2 T2000 system unit configuration...
1.2 System Unit Figure 1-3 shows the block diagram of the T2000’s system unit. Figure 1-3 T2000 block diagram...
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The system board in the T2000 is composed of the following major components: Central Processing Unit (CPU): 80C286-12 Numeric Data Processor (NDP) socket for the 80C287-12 (optional) Super Integration (SI): T9778A The SI stores the following components: · Two Direct Memory Access Controllers (DMACs): 82C37A ·...
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Oscillators (OSC): 14.7456MHz OSC (X1) is used for the SIO. 14.31818MHz OSC (X2) is used for the KBC. 44.9MHz OSC (X3), 28.322MHz OSC (X5), and 25.175MHz OSC (X6) are used for the video. 24.0MHz OSC (X4) is used for the CPU. 24MHz OSC (X7) is used for the VFO.
The T2000 3.5-inch Floppy Disk Drive (FDD) supports 720KB (formatted) 2DD and 1.44MB (formatted) 2HD 3.5-inch floppy disks. The T2000 FDD is shown in Figure 1-4 and its specifications are described in Table 1-1. Figure 1-4 T2000 3.5-inch FDD Table 1-1 T2000 3.5-inch FDD specifications...
The 20MB or 40MB (formatted) Hard Disk Drive (HDD) is a random access storage device. It is equipped with a non-removal 2.5-inch magnetic disk and mini-Winchester type magnetic heads. The two HDDs manufactured for the T2000 are shown in Figure 1-5. Their specifications are described in Table 1-2.
1.5 Keyboard The 86-key (USA) or 88-key (European) keyboard is mounted on the T2000 system unit. The keyboard is connected to the keyboard controller on the system board through 8-pin and 12-pin flat cables. The keyboard is shown in Figure 1-6.
(FL), and FL inverter board. LCD module The T2000 sidelit LCD is illuminated from the side and supports 640x480 pixels with a High Resolution Graphics Subsystem (HRGS) and 16 levels of gray. The HRGS includes the functions of the Video Graphics Array (VGA).
Fluorescent Lamp inverter board The FL inverter board supplies the high frequency current needed to illuminate the FL. The specifications for the FL inverter are described in Table 1-4. Table 1-4 FL inverter specifications Item Specifications Input Voltage (V) 12-24 Power (W) 3.6 (Max.) Voltage (V)
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Contents General ........................2-5 Problem Isolation Flowchart ..................2-6 Power Supply Problem Isolation Procedures ............... 2-8 System Board Problem Isolation Procedures ............2-14 Floppy Disk Drive Problem Isolation Procedures ............. 2-20 Hard Disk Drive Problem Isolation Procedures ............2-25 Keyboard Problem Isolation Procedures ..............2-30 Display Problem Isolation Procedures ..............
2.1 General This part describes how to determine which Field Replaceable Unit (FRU) is causing the T2000 to operate abnormally. The FRUs covered are: Power supply unit System board (PCB FA2SYx) Keyboard Display The following items are necessary for implementing the problem isolation procedures.
2.2 Problem Isolation Flowchart The flowchart in Figure 2-1 is used as a guide for determining which FRU is causing the T2000 to operate abnormally. Before performing the procedures described in the flowchart, please confirm the following: Disconnect all optional equipment from the T2000.
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Do typed characters Perform the keyboard problem appear correctly? isolation procedures in Section 2.7. Insert the Diagnostics Disk into the FDD. Then type A:TESTCE2 and press Enter. Perform each test. After confirming which diagnostic test detected an error, perform the Is an error detected in relevant problem isolation the diagnostics program?
2.3 Power Supply Problem Isolation Procedures This section describes how to determine if the power supply is causing the T2000 to operate abnor- mally. Start with Procedure 1 and continue with the other procedures as instructed. The proce- dures described in this section are:...
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Procedure 1 DC IN Indicator Check When the T2000 AC adapter is connected to a live wall outlet and the T2000, the DC IN indicator will light red. If the AC adapter or the power supply is malfunctioning, the DC IN indicator will flash red or does not light at all.
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VEE (-9V) is shorted. VDD (+12V) is shorted. VDSP (+12V to +18V for FL) is shorted. Turned off the Desk Station II before turning off the T2000. Battery terminal is shorted. Under voltage of AC adapter output voltage. (Less than +18V±5%) Under current of charging current.
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If the DC IN indicator problem still exists, perform Procedure 3. The indicator labeled Battery lights yellow (while the system is charging the battery) or lights green (when the battery pack is fully charged) if power is supplied from the AC adapter when you connect the battery pack to the system and the system is off.
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Connector and Cable Check The battery pack is connected to the system board with the battery cable. The cable may be discon- nected or damaged. Refer to Part 4 for instructions on how to disassemble the T2000 and then perform the following checks.
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Procedure 3 Replacement Check In the T2000, the power supply circuits are located on the system board. There is a connector from PJ704 to PJ705 for the intelligent power supply (IPS). The LED board (PCB FT2LEx) connects to PJ9 on the system board. Either of these boards may be damaged. Refer to Part 4 for instructions on how to disassemble the T2000, and then perform the following checks.
2.4 System Board Problem Isolation Procedures This section describes how to determine if the system board is causing the T2000 to operate abnor- mally. Start with Procedure 1 and continue with the other procedures as instructed. The proce- dures described in this section are:...
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If the following error message appears on the screen, press the F1 key. Then ex- ecute the setup operation. Detailed setup operation procedures are described in Part This program confirms the current T2000 system configuration and the configura- tion stored in RTC memory. If they are different, the following message will ap- pear.
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Check system. Then press [F1] key. If another error message appears, refer to Check 3. Check 3 If the following message appears, and the status of the printer port LED is F4h to F6h, replace the system board. Otherwise, press any key. At this time the resumed data will be erased.
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Printer Port LED Check The printer port LED displays the IRT program status and error status as a hexadecimal value after the T2000 is turned on. Connect the printer port LED to the printer port. After turning the system on, read the LED status from left to right as you are facing the back of the computer.
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one of the error status codes in Table 2-2, replace the system board. Table 2-2 Normal status and error status of the printer port LED Normal Error Meaning Process Table 2-2 Normal status and error status of the printer port LED (continued) Status Status CMOS battery test...
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The table below lists the resume errors and the associated error status codes. Procedure 3 Test Program Check The Diagnostic Test function in the T2000 Diagnostic Program has several tests for testing the T2000 system board. Perform the following tests. System test...
2.5 Floppy Disk Drive Problem Isolation Procedures This section describes how to determine if the floppy disk drive is causing the T2000 to operate abnormally. Start with Procedure 1 and continue with the other procedures as instructed. The procedures described in this section are:...
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Procedure 1 Message Check Insert the Toshiba MS-DOS system disk in the FDD and turn on the power. If the T2000 loads Toshiba MS-DOS normally, refer to Procedure 2. If Toshiba MS-DOS does not load normally, the following message or a similar message will appear on the screen.
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Replace and press any key when ready Procedure 2 Format Check Format a floppy disk using the Toshiba MS-DOS FORMAT command. If the floppy disk does not format correctly, perform the following checks. Check 1 Make sure the FDD indicator lights. If it does not light, refer to Procedure 4. If it lights, refer to Check 2.
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Procedure 3. Procedure 3 Test Program Check The FDD test program is stored on the T2000 Diagnostics Disk. After loading Toshiba MS-DOS, run the Diagnostic Program (TESTCE2). Refer to Part 3 for detailed instructions about the FDD test.
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floppy disk. If any other error message appears, refer to Check 2. Check 2 Make sure the floppy disk is formatted correctly. If it is correct, refer to Procedure Procedure 4 Connector Check The FDD is connected to the system unit by the FDD cable. Disassemble the system unit and check the FDD.
Check 2 The FDD may be defective. Replace the FDD with a new one and refer back to Procedures 2 and 3. If the problem still exists, refer to Check 3. Check 3 The system board may be causing the problem. Replace it with a new system board. 2.6 Hard Disk Drive Problem Isolation Procedures This section describes how to determine if the hard disk drive is defective.
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CAUTION: The contents of the hard disk will be erased when the HDD Problem Isola- tion Procedures are executed. Before continuing, transfer the contents of the hard disk to floppy disks. This can be done with the Toshiba MS-DOS BACKUP command. Refer to the Toshiba MS-DOS manual for details.
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If the above message does not appear, refer to Procedure 2. Procedure 2 Logical Format Check Using the Toshiba MS-DOS system disk, partition the hard disk using the FDISK command. Then format the hard disk using the /s switch after the FORMAT command to transfer the system pro- gram.
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Procedure 3 Test Program Check The HDD test program is stored on the T2000 Diagnostics Disk. After loading Toshiba MS-DOS, run the Diagnostic Program (TESTCE2) and perform the HDD test. Refer to Part 3 for detailed instructions about the HDD test.
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Table 2-4 HDD error code and descriptions Procedure 4 Connector Check The HDD is connected to the system board by the HDD board (PCB FT2HDx). Disassemble the system unit and check the HDD. Refer to Part 4 for instructions on how to disassemble the com- puter and then perform the following checks.
2.7 Keyboard Problem Isolation Procedures This section describes how to determine if the keyboard is causing the T2000 to operate abnor- mally. Start with Procedure 1 and continue with the other procedures as instructed. The proce- dures described in this section are:...
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Procedure 1 Test Program Check The keyboard test program is stored on the T2000 Diagnostics Disk. After loading Toshiba MS- DOS, run the Diagnostic Program (TESTCE2) and perform the keyboard test. Refer to Part 3 for detailed instructions about the keyboard test.
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If an error occurs, refer to Procedure 2. If an error does not occur, the keyboard is OK. Procedure 2 Connector Check The keyboard is connected to the system board by 8-pin and 12-pin flat cables. Disassemble the system unit and check the keyboard cables. Refer to Part 4 for instruction on how to disassemble the system unit and then perform the following checks.
2.8 Display Problem Isolation Procedures This section describes how to determine if the display is causing the T2000 to operate abnormally. Start with Procedure 1 and continue with the other procedures as instructed. The procedures...
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Procedure 4: Replacement Check Procedure 1 Brightness and Contrast Volume Check The brightness and contrast dials are on the right side of the display unit. Use these dials to adjust the display screen to your satisfaction. If only the brightness does not change, refer to Procedure 3. 2-34...
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Procedure 2 Test Program Check The display test program is stored on the T2000 Diagnostics Disk. This program checks the dis- play controller on the system board. After loading Toshiba MS-DOS, run the Diagnostic Program (TESTCE2). Refer to Part 3 for detailed instructions about the display test.
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If an error is detected, refer to Procedure 3. If an error is not detected, the display is OK. Procedure 3 Connector Check The display unit has an LCD module, FL (Fluorescent Lamp), and FL inverter. The LCD module and FL inverter are connected to the system board with the LCD cable. The LED board (PCB FT2LEx) is connected directly to the system board.
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Procedure 4 Replacement Check In the T2000, the FL inverter, LCD module, and system board are connected with the display circuits. Any of these units may be damaged. Refer to Part 4 for instructions on how to disas- semble the system unit and then perform the following checks.
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Contents General ........................3-5 Using the T2000 Diagnostic Program ................. 3-6 Subtest Names ......................3-9 System Test ......................3-11 Memory Test......................3-12 Keyboard Test ......................3-14 Display Test ......................3-15 Floppy Disk Test ....................... 3-21 Printer Test ....................... 3-23 3.10 ASYNC Test ......................
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3.18 Log Utilities ......................3-42 3.18.1 Program Description ..................3-42 3.18.2 Operations ..................... 3-42 3.19 Running Test ......................3-44 3.19.1 Program Description ..................3-44 3.19.2 Operations ..................... 3-44 3.20 FDD Utilities ......................3-45 3.20.1 Program Description ..................3-45 3.20.2 Operations ..................... 3-46 3.21 System Configuration ....................
3.1 General This part explains how to use the T2000 Diagnostic Program (TESTCE2) which tests the functions of all the T2000 hardware modules. This program is located on the T2000 Diagnostic Diskette. The Diagnostic Program is composed of 18 programs divided into the Service Program Module (DIAGNOSTICS MENU) and the Test Program Module (DIAGNOSTIC TEST MENU).
3.2 Using the T2000 Diagnostic Program To start the T2000 Diagnostic Program, follow these steps: Make sure the computer is loaded with Toshiba MS-DOS version 3.3 or 4.0. Turn on the T2000 and insert the T2000 Diagnostics Diskette in the floppy disk drive.
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STATUS : XXX SUB-TEST MENU : 01 - ROM checksum 02 - HW status 99 - Exit to DIAGNOSTIC TEST MENU SELECT SUB-TEST NUMBER NOTE: The message displayed by your T2000 may be slightly different than the one shown above.
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Enter the desired subtest number from the subtest menu and press Enter. The following message will appear. TEST LOOP (1:YES/2:NO) ? Selecting YES increases the pass counter by one each time the test cycle ends and then restarts the test cycle. Selecting NO returns you to the subtest menu after the test is completed.
3.3 Subtest Names Table 3-1 describes the subtest for each test program in the Test Program Module. Table 3-1 Subtest names Test No. Test name Subtest Subtest name SYSTEM ROM checksum HW status RAM constant data RAM address pattern data RAM refresh Protected mode MEMORY...
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Table 3-1 Subtest names (continued) Test No. Test name Subtest Subtest name Sequential read Address uniquence (uniqueness) Random address/data Cross talk & peek (peak) shift Write/read/compare (CE) Write specified address Read specified address ECC circuit Sequential write W-R-C specified address Real time Backup memory REAL TIMER...
3.4 System Test Subtest 01 ROM checksum This test performs a ROM checksum test on the T2000’s system board from address F0000h - FFFFFh (64KB). Subtest 02 HW status This test reads and displays the T2000’s hardware status as shown below.
This subtest is the same as subtest 04; it is used for testing an optional memory card. Memory module capacity is 1MB, 2MB, 4MB, and 8MB. After selecting subtest 05, the following message will be displayed. Extended memory size (1:1MB,2:2MB,3:4MB,4:8MB) ? Select the number that corresponds to the memory card installed in the T2000. 3-12...
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Subtest 06 Backup memory This subtest writes constant data to memory from address E8000h to EFFFFh, then reads and compares it with the original data. The constant data is 0000h, 5555h, AAAAh, and FFFFh. Subtest 07 Hard-RAM NOTE: To execute this subtest, Hard-RAM must be set up on the system. This subtest writes word units of constant data to memory (address E0000h to E7FFFh), then reads and compares it with the original data.
3.6 Keyboard Test Subtest 01 Pressed key display (86/88) NOTE: Make sure the Num Lock key is off. If the Num Lock key is on, this subtest cannot be executed. The keyboard layout, as shown below, is drawn on the display. When any key is pressed, the corresponding key on the screen is changed to the “*”...
3.7 Display Test Subtest 01 VRAM read/write This subtest writes constant data and address data to video RAM (256KB), then reads the data written and compares it with the original data. The constant data is FFFFh, AAAAh, 5555h, and 0000h. Subtest 02 Character attributes (mode 1, 13h) This subtest shows the following display modes and displays the foreground colors...
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After pressing Enter, 16 colors or 16 levels of gray for mode 13h are displayed as shown below. 320*200 GRAPHICS DISPLAY [ 13 ] To exit this subtest and return to the DISPLAY TEST menu, press Ctrl + Break. Subtest 03 Character set In this subtest the character set (00h to FFh) is displayed in the 40x25 character mode as shown below.
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Subtest 04 80x25 and 80x30 Character display (mode 12) In this subtest, the character string is displayed shifting one character line by line in the 80x25 and 80x30 character mode as shown below. 80*XX CHARACTER DISPLAY 012345678901234567890123456789012345678901234567890123456789012345678901234567 !”#$%&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklm !”#$%&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklmn “#$%&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmno #$%&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklmnop $%&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklmnopq %&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklmnopqr...
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Subtest 06 640x200 Graphics display (mode 6, E) This subtest displays the even dots, odd dots, and all dots blocks in the 640x200 dots graphics mode 6 and E as shown below. 640*200 GRAPHICS DISPLAY : [X] EVEN DOTS ODD DOTS ALL DOTS DRIVEN DRIVEN...
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Subtest 08 Display page This subtest confirms that the pages can be changed in order from page 0 through page 7 in the 40x25 character mode. DISPLAY PAGE 0 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 To exit this subtest and return to the DISPLAY TEST menu, press Ctrl + Break. Once the subtest has displayed all seven pages, you will return to the DISPLAY TEST menu.
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Subtest 10 LED / DAC pallet This subtest checks the LED Speed, Caps Lock, and Num Lock using key operations. It also writes the 2Ah/15h data to 6 bits of 256x3 (RGB), then reads the written data and compares it with original data. [ Speed/CRT/Caps/Num/Overlay LED test ] (1) Press [ Fn + Pgdn ] key ! ...
3.8 Floppy Disk Test CAUTION: Before running the floppy disk test, prepare a formatted work disk. Re- move the Diagnostics Disk and insert the work disk into the FDD. The contents of the floppy disk will be erased. OPERATION When you select the floppy disk test from the DIAGNOSTIC TEST MENU, the following message will appear beneath the DIAGNOSTIC TEST MENU.
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CONTENTS Subtest 01 Sequential read This subtest performs the Cyclic Redundancy Check (CRC) with a continuous read operation of all the tracks on a floppy disk. The tracks available for the floppy disk formats are: Double-sided, double-density (2D): Tracks 0 to 39. Double-sided, double-density, double-track (2DD) and Double-sided, high-density, double-track (2HD): Tracks 0 to 79.
= XXXXh channel#2 = XXXXh channel#3 = XXXXh Select the channel number (1-3) ? The XXXXh data in the above message shows the printer I/O port address. The T2000 supports three printer channels. Select the printer channel number and press 3-23...
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Enter to display the PRINTER TEST menu. CONTENTS Subtest 01 Ripple pattern This subtest prints characters for codes 20h through 7Eh line by line while shifting one character to the right at the beginning of each new line. !”#$%&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklm !”#$%&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklmn “#$%&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmno #$%&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklmnop $%&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklmnopq...
Both the output mode and bi-directional mode are tested. 3.10 ASYNC Test Subtests 01 through 04 requires the following data format: Method: Asynchronous Speed: 9600 bps Data: 8 bits and one parity bit (EVEN) Stop bit: One stop bit Data pattern: 20h to 7Eh Subtest 01 Wrap around (board) NOTE: To execute this subtest, an RS-232-C wraparound connector (34M741621G01)
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This subtest is used with subtest 03 as described above. This subtest receives the data from the send side, then returns the data. Subtest 05 Card modem loopback (1200BPS) NOTE: To execute this subtest, a built-in modem must be installed. This subtest sends the data from the RS-232-C direct cable to the built-in modem.
08, 09, or 10 is executed. Before running the test, transfer the contents of the hard disk to floppy disks. This can be done with the Toshiba MS-DOS BACKUP command. After the test, enter the Toshiba MS-DOS FDISK command, which will set the partition. Then enter the Toshiba MS-DOS FORMAT command.
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This message is used to select whether or not the HDD status is displayed the screen. The HDD status is described in Section 3.15. Type in 1 or 2 and press Enter. The HARD DISK TEST menu will appear. During the hard disk test, the following message will appear. HARD DISK TEST XXXXXXX SUB-TEST...
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fourth digit is the head number and the last two digits are the sector number. The first digit of the STATUS number is the drive number being tested and the last two digits are the error status code. CONTENTS Subtest 01 Sequential read The sequential read test is a sequential reading of the all the tracks on the HDD starting at track 0.
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This subtest writes specified data to a specified cylinder and head. Subtest 07 Read specified address This subtest reads data which has been written to a specified cylinder and head. Subtest 08 ECC circuit This subtest checks the Error Check and Correction (ECC) circuit functions of the specified cylinder and head.
Subtest 10 W-R-C specified address This subtest writes data to a specified cylinder and head, then reads and compares it with the original data. 3.12 Real Timer Test Subtest 01 Real time A new date and time can be inputted during the Real Time subtest. To execute the Real Time subtest, follow these steps: After the REAL TIMER TEST menu appears, select subtest 01.
CAUTION: When this test is executed, the current date and time are erased. This subtest checks if the real time clock correctly increments the date and time displayed (month, day, year, hour, minute, and second). 3.13 NDP Test NOTE: To execute this test, a Numeric Data Processor (NDP) must be mounted on the system board.
Subtest 01 NDP test This test checks the control word, status word, bus, and addition and multiplication functions. 3.14 Error Codes and Error Status Names Device name Error code Error status name (COMMON) Data Compare Error SYSTEM ROM Checksum Error Parity Error Protected Mode Not Change Memory Read/Write Error...
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Table 3-3 lists the error codes and error status names Device name Error code Error status name DSR Off Time Out CTS Off Time Out RX-ENABLE Time Out TX-Buffer Full Time Out Parity Error Framing Error ASYNC Overrun Error Line Status Error Modem Status Error NO CARRIER (Card Modem) ERROR (Card Modem)
Table 3-3 Error codes and error status names Table 3-3 Error codes and error status names (continued) 3.15 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.
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The contents of the HDC status register are described in Tables 3-4 and 3-5. Name Description "0"--Otherwise. (Bad block mark) "1"--A bad block mark is detected. "0"--There is no uncorrectable data error. (Uncorrectable) "1"--Uncorrectable data error has been detected. Not used. IDNF "0"--Otherwise.
CAUTION: The contents of the hard disk will be erased when this program is executed. Before executing the program, transfer the contents of the hard disk onto floppy disks. This can be done with the Toshiba MS-DOS BACKUP command. See the Toshiba MS- DOS manual for details.
3.16.2 Operations CAUTION: After physical formatting is finished, enter the Toshiba MS-DOS FDISK command which will set the partition. Then execute the Toshiba MS-DOS FORMAT command. See the Toshiba MS-DOS manual for details. Select the HARD DISK FORMAT function from the DIAGNOSTICS MENU. The follow- ing prompt appears.
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Drive number select (1:#1,2:#2) ? Select a drive number and press Enter. The following message will appear. Interleave number (1/1-8) ? Select an interleave number (usually 1) and press Enter. The following display will be displayed. Unlock Format select (1:no,2:yes) ? Select whether or not the HDD has an unlock format and press Enter.
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Drive number select (1:#1,2:#2) ? Select a drive number and press Enter. The following message will appear. Interleave number (1/1-8) ? Select an interleave number (usually 1) and press Enter. The following message will appear. [ HDD TYPE ] : CYLINDER = xxxx [ HDD TYPE ] : HEAD = xx [ HDD TYPE ] : SECTOR...
After checking the bad tracks on the hard disk the following message will appear. Format complete Press Enter to return to the HARD DISK FORMAT menu. 3.17 Head Cleaning 3.17.1 Program Description This function cleans the heads in the FDD by executing a series of head load/seek and read opera- tions.
press Enter. When the Cleaning start message appears, the FDD head cleaning has started. The display automatically returns to the DIAGNOSTICS MENU when the function is completed. 3.18 Log Utilities 3.18.1 Program Description This program logs error information generated while a test is in progress and stores the results in RAM.
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Pass count HDC status Subtest number Read data Test name Write data Error count Error status name [[ 1:Next,2:Prev,3:Exit,4:Clear,5:Print,6:FD Log Read,7:FD Log Write ]] The error information displayed on the screen can be manipulated with the following number keys. Number Function Scrolls the display to the next page.
Selecting Yes executes the printer wraparound test. A printer wraparound connector must be connected to the printer connector on the back of the T2000 to properly execute this test. Type in 1 or 2 and press Enter. The following message will appear.
COMMS connector on the back of the T2000 to properly execute this test. Type in 1 or 2 and press Enter to start the test. This program is executed continuously. To terminate the program, press Ctrl + Break.
This program copies a source floppy disk to a target floppy disk. DUMP This program displays the contents of a floppy disk (both 3.5-inch and 5.25-inch) and the designated sectors of the hard disk. 3.20.2 Operations Select the FDD UTILITIES function from the DIAGNOSTICS MENU and press Enter. The following message will be displayed.
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[[track, head = xxx x]] After the floppy disk is formatted, the following message will appear. Format complete Another format (1:Yes/2:No) ? If you type 1 and press Enter, the display will repeat the message in step (3) above. If you type 2, the display returns to the DIAGNOSTICS MENU. COPY program When COPY is selected, the following message appears.
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Copy complete Another copy (1:Yes/2:No) ? To copy another disk, type 1 and the message in step (1) will be displayed again. If you type 2, the display returns to the DIAGNOSTICS MENU. DUMP program When DUMP is selected, the following message appears. Format type select (0:2DD,1:2D,2:2HD,3:HDD) ? Select a format type number.
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Head number Type the head number and press Enter. The following message will appear. Sector number ?? Type the sector number and press Enter. The specified dump list will be displayed. After a dump list is displayed on the screen, the following message will appear. Press number key (1:up,2:down,3:end) ? Displays the next sector dump.
(1) above. If you type 2, the display will return to the DIAGNOSTICS MENU. 3.21 System Configuration 3.21.1 Program Description The System Configuration function contains the following configuration information for the T2000. BIOS ROM version Base memory size Display mode Number of floppy disk drives...
* - 1 HARD DISK DRIVE(S) * - 1 PRINTER ADAPTER * - 0 MATH CO-PROCESSOR * - xxxxxKB EXTENDED MEMORY PRESS [ENTER] KEY ? Press Enter to return to the DIAGNOSTICS MENU. 3.22 SETUP 3.22.1 Program Description This program displays the current system setup information as listed below: MEMORY Total memory size Base memory size...
OTHERS Popup Processing speed External FDD/PRT Printer port type TIME & DATE 3.22.2 Accessing the SETUP Select the SETUP function from the DIAGNOSTICS MENU and press Enter. The following display will appear. 3-52...
This display is an example of the setup options available for the T2000. Notice that selecting the type of floppy disk drive is not an option. Press Esc if the setup options displayed accurately reflect your hardware configuration. 3.22.3 Changing SETUP Values The SETUP values for the T2000 can be changed automatically to their default settings or manu- ally to user-defined settings.
The SETUP menu displays this message. Save Settings And Reboot? (Y/N) Review your changes. If you need to make more alternations, press N and return to step 1 above. If the new values are correct, press Y and the system will reboot. 3.22.4 SETUP Descriptions This section explains the alternate values for each SETUP option.
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Use this special feature of the T2000 to copy BIOS functions from ROM to RAM for faster access while you’re using the T2000. You must have at least 128KB of extended memory to select Enable. Since the BIOS subroutines are accessed often, enabling this option significantly improves the T2000’s operating speed.
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The options are: Normal:Semi-Bright,Intense:Bright (default) Normal:Bright,Intense:Semi-Bright If you’re primarily using text-based programs as opposed to graphics software, you may find that choosing Normal:Bright,Intense:Semi-Bright makes the text easier to read. LCD Gray Scale Level This specifies the levels of gray and reverses how characters are displayed on the LCD screen.
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This option allows you to change the I/O address and interrupt request (IRQ) levels of the serial ports. The T2000 supports one serial port and one built-in modem port. Since the I/O address and IRQ level of a serial port are automatically established according to the COM level, the SETUP program only prompts you to specify the COM level.
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Use either the space bar or backspace key to choose one of two hard disk options. Sets the hard disk to its standard setting. Capacity = xxMB This is the default setting. Disables the hard disk. The T2000 functions as if a hard disk No Drive is not installed. POWER SAVE OPTIONS This option enables, disables, and sets the T2000 power saving features.
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Disables HDD automatic power off. Disable This is the default setting. Automatically turns off power to the HDD if it is not used for the xxMin. specified duration. The minutes of duration xx can be set to: Display Auto Off This option enables and disables the display automatic power off.
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Selects the high CPU speed. High This is the default setting. Selects the low CPU speed. This setting makes the T2000 CPU speeds compatible with IBM PC/AT. External FDD/PRT This option assigns the function of the PRT/FDD port.
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Contents General ........................4-5 Removing/Replacing the Battery Pack ................ 4-7 Removing/Replacing the Modem Assembly ............... 4-8 Removing/Replacing the Optional Memory Card ............. 4-10 Removing/Replacing the Keyboard ................4-12 Removing/Replacing the Sub Battery ............... 4-14 Removing/Replacing the Speaker ................4-15 Removing/Replacing the LCD Module and FL Inverter Board........4-17 Removing/Replacing the Top Cover Assembly ............
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Figures Figure 4-1 Removing the battery pack ................4-7 Figure 4-2 Removing the modem cover ................4-8 Figure 4-3 Removing the modem assembly ..............4-9 Figure 4-4 Removing the memory card slot cover ............4-10 Figure 4-5 Removing the optional memory card ............. 4-11 Figure 4-6 Removing the three screws ................
4.1 General This section provides detailed procedures for disassembling the T2000 and replacing Field Re- placeable Units (FRU). The following FRUs are covered in this section: System board (PCB FA2SYx) LED board (PCB FT2LEx) HDD board (PCB FT2HDx) FL inverter board...
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Be sure to use the correct screws to secure the various parts. Screw sizes are listed in the corresponding figures. Make sure you replace all the screws that were removed during disassembly. After installing an FRU in the T2000, confirm that the FRU and the T2000 are functioning properly before returning the unit. Tools You will need the following equipment to disassemble and reassemble the T2000: (1) M 2.5 Phillips-head screwdriver to remove and replace screws.
4.2 Removing/Replacing the Battery Pack To remove the T2000 Battery Pack: Turn off the power to the T2000 and disconnect the AC adapter, power cord, and all exter- nal cables connected to the T2000. Facing the back of the computer, pull back the battery release levers (A) and slowly slide the battery pack (B) toward you until the battery pack stops (Figure 4-1).
4.3 Removing/Replacing the Modem Assembly To remove the T2000 Modem Assembly: Turn off the power to the T2000 and disconnect the AC adapter, power cord, and all exter- nal cables connected to the T2000. Close the T2000 display panel if it is open.
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Remove the two silver 2.5 x 6 mm screws (C) securing the modem assembly (D). If an optional modem is installed, disconnect the modem connector. Lift the modem assembly out of the T2000 (Figure 4-3). Figure 4-3 Removing the modem assembly...
Memory Card To remove the T2000 Optional Memory Card: Turn off the power to the T2000 and disconnect the AC adapter, power cord, and all exter- nal cables connected to the T2000. Close the T2000 display panel if it is open.
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Reconnect the AC adapter, open the display, and turn on the computer. The T2000 automatically configures all additional memory as expanded memory. Use the SETUP program to configure your additional memory as expanded memory. You can also use your addi- tional memory as VDISK.
Close the T2000 display panel if it is open. Turn the computer upside down so that the front of the computer is facing you. Remove the three silver 2.5 x 8 mm screws (A) from the bottom of the T2000 (Figure 4-6). Figure 4-6 Removing the three screws...
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Carefully turn the T2000 right side up with the front facing you and open the display panel. Press firmly on the front edge of the keyboard cover to release the two tabs. Then gently lift the keyboard (B) out and set it in front of the T2000.
Move the plastic cover (A) aside and disconnect the sub battery cable (B) from PJ703 (C) on the system board. Lift the sub battery (D) out of the T2000. Figure 4-9 Removing the sub battery To reassemble the T2000, follow steps 1 through 3 in reverse order. 4-14...
4.7 Removing/Replacing the Speaker To remove the speaker: The battery pack and keyboard must be removed first. Refer to Sections 4.2 and 4.5 for instructions on how to remove these items before proceeding. Remove the seven 2.5 x 4 mm screws (A) securing the shield plate (B) (Figure 4-10). Figure 4-10 Removing the seven screws Remove the shield plate and set it aside.
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(D) from PJ11 (E) on the system board (Figure 4-11). Figure 4-11 Removing the speaker bracket Lift the speaker assembly out of the T2000. Remove the two 2.5 x 4 mm screws (F) securing the speaker (G) to the speaker holder (Figure 4-12).
4.8 Removing/Replacing the FL Inverter Board and LCD Module To remove the T2000 FL Inverter Board and LCD Module: The battery pack must be removed first. Refer to Section 4.2 for instructions on how to remove this item before proceeding.
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To remove the LCD module, disconnect the LCD cable (K) from CN1 (L) and CN2 (M) located on the LCD module (N) while moving the insulator (O) aside. Remove the four 2.5 x 4 mm screws (P) and remove the ground cable (Q) and LCD module from the T2000 (Figure 4-15).
4.9 Removing/Replacing the Top Cover Assembly To remove the top cover assembly: The battery pack, keyboard, and speaker bracket must be removed first. Refer to Sections 4.2, 4.5, and 4.7 for instructions on how to remove these items before proceeding. Disconnect the LED cable (A) and LCD cable (B) from PJ9 (C) and PJ12 (D) on the system board (Figure 4-16).
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Figure 4-16 Removing the front top cover screws Remove the four silver 2.5 x 6 mm screws (F) from the T2000’s battery pack slot (G) (Figure 4-17). Figure 4-17 Removing the four screws 4-20...
To reassemble the computer, follow steps 1 through 4 in reverse order. 4.10 Removing/Replacing the RTC Battery and LED Board To remove the RTC Battery and LED board: The battery pack, keyboard, speaker bracket, and top cover assembly must be removed first. Refer to Sections 4.2, 4.5, 4.7, and 4.9 for instructions on how to remove these items before proceeding.
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Remove the two 2.5 x 4 mm screws (G) and then remove the LED holder assembly (H) from the cover assembly (Figure 4-19). CAUTION: The thermistor contacts should be clear of the cover assembly when lifting the LED holder assembly from the cover assembly. Figure 4-19 Removing the LED holder assembly To remove the RTC battery (I), disconnect it from PJ1 on the LED board (PCB FT2LEx) (J) and lift it out of the LED holder assembly.
To reassemble the computer, follow steps 1 through 7 in reverse order. 4.11 Removing/Replacing the Battery Terminal Assembly and HDD To remove the battery terminal assembly and HDD: The battery pack, keyboard, speaker bracket, and top cover must be removed first. Refer to Sections 4.2, 4.5, 4.7, and 4.9 for instructions on how to remove these items before proceed- ing.
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Figure 4-21 Removing the battery terminal assembly Remove the two 2.5 x 4 mm screws (D) securing the HDD to the system board (Figure 4- 22). Figure 4-22 Removing the HDD assembly Grasping the top of the HDD, gently lift the HDD and the HDD chassis (E) out of the bottom cover as one unit (Figure 4-22).
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Figure 4-23 Disconnecting the HDD flexible cables Remove the four 3 x 4 mm screws (K) that secure the HDD to the HDD chassis (Figure 4- 24). Figure 4-24 Separating the HDD chassis from the HDD Separate the HDD from the HDD chassis and set the HDD aside. To reassemble the computer, follow steps 1 through 8 in reverse order.
Disconnect the FDD cable (A) from PJ16 (B) located on the system board and remove the two 2.5 x 4 mm screws (C). Lift the FDD chassis (D) and FDD out of the T2000 as one unit (Figure 4-25).
4.13 Removing/Replacing the System Board To remove the system board: The battery pack, optional modem (if installed), keyboard, speaker bracket, top cover assembly, and HDD must be removed first. Refer to Sections 4.2, 4.3, 4.5, 4.7, 4.9, and 4.11 for instructions on how to remove these items before proceeding. Disconnect the sub battery cable (A) from PJ703 (B) on the system board.
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Flip down the PRT/FDD cover (H) and remove the silver 2.5 x 6 mm screw (I) from between the PRT/FDD and COMMS ports on the back of the computer (Figure 4-28). Figure 4-28 Removing the system board Gently remove the system board from the bottom cover and set the bottom cover aside. To reassemble the computer, follow steps 1 through 8 in reverse order.
Appendix A System Board Layout System Board FA2SYx (ICs) Figure A-1 System board FA2SYx (ICs) (Front) App-5...
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Figure A-1 System board FA2SYx (ICs) (Back) App-6...
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Table A-1 ICs on the system board FA2SYx Callout Number Name CPU: Central Processing Unit (80C286-12) NDP: Numeric Data Processor (80C287-12) GA-SYS CNT: System Control Gate Array GA-REF CNT: Refresh Control Gate Array IC6, 7 System RAM BIOS ROM Backup RAM IC46 RTC: Real Time Clock IC11...