hit counter script
Toshiba T2200SX User Manual
  1. Manuals
  2. Brands
  3. Toshiba Manuals
  4. Laptop
  5. T-Series T2200sx
  6. User manual
Toshiba T2200SX User Manual

Toshiba T2200SX User Manual

Hide thumbs Also See for T2200SX:
Table of Contents

Advertisement

Quick Links

Chapter 1
Hardware Overview
1-1

Advertisement

Table of Contents
loading

Related Manuals for Toshiba T2200SX

Summary of Contents for Toshiba T2200SX

  • Page 1 Chapter 1 Hardware Overview...
  • Page 2 This page intentionally left blank...

  • Page 3: Table Of Contents

    Table 1-4 FL inverter board specifications ................1-15 Figures Figure 1-1 T2200SX personal computer .................. 1-7 Figure 1-2 T2200SX system unit configuration ............... 1-7 Figure 1-3 T2200SX block diagram ..................1-8 Figure 1-4 3.5-inch FDD ....................... 1-11 Figure 1-5 2.5-inch HDD ...................... 1-12 Figure 1-6 Keyboard ......................
  • Page 4 This page intentionally left blank...

  • Page 5: T2200Sx Features

    101/102-key keyboard. AC Adapter The universal auto-sensing AC adapter supplies power to operate the T2200SX and recharge its batteries. It can operate from a range of 100 to 240 volts. Optional power cords support various countries’ AC outlet configura- tions.
  • Page 6 A PS/2 mouse connector is located on the right side of the computer. Interface Ports A parallel port, serial port, RGB port, numeric keypad port, and expansion bus connector are provided to allow the T2200SX to interface with a variety of optional equipment.

  • Page 7: Figure 1-1 T2200Sx Personal Computer

    The T2200SX Personal Computer is shown in Figure 1-1 and the T2200SX system configuration is shown in Figure 1-2. Figure 1-1 T2200SX personal computer Figure 1-2 T2200SX system unit configuration...

  • Page 8: System Unit Block Diagram

    1.2 System Unit Block Diagram Figure 1-3 is a block diagram of the T2200SX system unit. Figure 1-3 T2200SX block diagram...
  • Page 9 The system board in the T2200SX is composed of the following major components: Central Processing Unit (CPU): 80386SX-20 The CPU is a 32-bit microprocessor operating at 20MHz (high) and 10MHz (low) clock speeds. Math coprocessor (NDP) socket for the 80387SX-20 (optional)
  • Page 10 Oscillators (OSC): 40.0MHz OSC (X1) is used for the CPU. 44.9MHz OSC (X2), 28.322MHz OSC (X3), and 25.175MHz OSC (X4) are used for the video. 14.7456MHz OSC (X5) is used for the COM. 14.31818MHz OSC (X6) is used for the KBC. 32.768KHz OSC (X7) is used for the RTC.

  • Page 11: Inch Floppy Disk Drive

    The T2200SX 3.5-inch Floppy Disk Drive (FDD) is a thin, high performance, reliable drive that supports 720KB (formatted) 2DD and 1.44MB (formatted) 2HD 3.5-inch floppy disks. The T2200SX FDD is shown in Figure 1-4 and its specifications are described in Table 1-1. Figure 1-4 3.5-inch FDD Table 1-1 3.5-inch FDD specifications...

  • Page 12: Inch Hard Disk Drive

    It is equipped with non-removal 2.5-inch magnetic disks and mini-Winchester type magnetic heads. The T2200SX HDD is shown in Figure 1-5. The HDD specifications are described in Table 1-2. Figure 1-5 2.5-inch HDD Table 1-2 2.5-inch HDD specifications...

  • Page 13: Keyboard

    1.5 Keyboard The 82-key (USA) or 84-key (European) keyboard is mounted in the system unit. The keyboard is connected to the keyboard controller located on the system board through a 19-pin flat cable. The keyboard is shown in Figure 1-6. See Appendix E for optional keyboard configurations.

  • Page 14: Sidelit Liquid Crystal Display

    (FL), and an FL inverter board. 1.6.1 LCD Module The T2200SX 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).

  • Page 15: Fl Inverter Board

    1.6.2 FL Inverter Board The FL inverter board supplies the high frequency current needed to illuminate the FL. The specifications for the FL inverter board are described in Table 1-4. Table 1-4 FL inverter board specifications Item Specifications Voltage (VDC) 12 - 24 Input Power...
  • Page 16 This page intentionally left blank 1-16...
  • Page 17 Chapter 2 Operational Overview...
  • Page 18 This page intentionally left blank...
  • Page 19 Contents General..........................2-5 Processor ........................... 2-7 2.2.1 Clock Mode ......................2-7 2.2.2 Sleep Mode ......................2-7 Memory ..........................2-8 2.3.1 Real Mode Memory Map ..................2-9 2.3.2 Protected Mode Memory Map (Hard RAM = 0MB).......... 2-10 2.3.3 EMS Expanded Memory ................... 2-11 2.3.4 Extended Memory ....................
  • Page 20 Figures Figure 2-1 System unit block diagram ..................2-6 Figure 2-2 Real Mode Memory Map ..................2-9 Figure 2-3 Protected Mode Memory Map ................2-10 Figure 2-4 DRAM address map ..................... 2-12 Figure 2-5 Start, parity, and stop bits ..................2-24...

  • Page 21: General

    2.1 General The T2200SX system board contains the following functional components: One Intel 80386SX-20 32-bit microprocessor One Intel 80387SX-20 math coprocessor socket 2MB of standard RAM 2MB (Four 512Kx8-bit chips) No parity bit Access time 70ns BIOS ROM (640KB) 128KB (One 64Kx16-bit chip)
  • Page 22 MC146818AF Real Time Clock (RTC) Keyboard Controller (KBC) The KBC controls the internal keyboard, numeric ten keypad port, and mouse port. The block diagram of the T2200SX system unit is shown in Figure 2-1. SYSCNT-GA MEMCNT 80386SX BUSCNT BUSDRV ADRDRV...

  • Page 23: Processor

    2.2 Processor The T2200SX CPU is an Intel 80386SX-20 microprocessor. The 80386SX operates in both, real and protected modes. Real mode can only directly access 1MB of memory. The architecture is the same as the 8086, but allows access to the 32-bit register set of the 80386SX. The protected mode allows the 80386SX to increases the linear address space to access four gigabytes.

  • Page 24: Memory

    2.3 Memory The T2200SX system memory contains 2MB of RAM. T2200SX working memory consists of four 512Kx8 bit dynamic RAM chips for system working memory. The refresh cycle is 15 microsec- onds. The 80386SX supports both the real and protected mode operation. In the real mode, the first 640KB of the RAM are directly addressed by MS-DOS.

  • Page 25: Real Mode Memory Map

    2.3.1 Real Mode Memory Map CPU ADDRESS '000000' Conventional Memory 640 KB '0A0000' Video RAM for VGA 128 KB '0C0000' VGA BIOS ROM 32 KB '0C8000' Reserved '0E0000' Hard RAM Window 32 KB '0E8000' Back-up RAM 32 KB '0F0000' System BIOS ROM 64 KB '100000' Figure 2-2 Real Mode Memory Map...

  • Page 26: Protected Mode Memory Map (Hard Ram = 0Mb)

    2.3.2 Protected Mode Memory Map (Hard RAM = 0MB) CPU ADDRESS '000000' Conventional Memory 640KB '0A0000' Video RAM for VGA 128KB '0C0000' VGA BIOS ROM 32KB '0C8000' Reserved '0E0000' Hard RAM Window 32KB '0E8000' Back-up RAM 32KB '0F0000' System BIOS ROM 64KB '100000' Extended Memory 1408KB '260000'...

  • Page 27: Ems Expanded Memory

    The T2200SX does not support Expanded Memory at the hardware level. By using the 80386SX CPU function, which is the virtual 86 mode and paging system, the T2200SX can support Expanded Memory at the software level. The following software supports the T2200SX Expanded Memory:...

  • Page 28: Dram Address Map

    2.3.6 DRAM Address Map The following memory map indicates the address relationships of memory address and DRAM address. Memory address map DRAM address map '000000' '000000' Conventional Conventional Memory Memory 640KB 640KB '0A0000' '0A0000' Video BIOS Video RAM 32KB '0B0000' System BIOS 128KB 64KB...

  • Page 29: Interrupts

    2.4 Interrupts The T2200SX supports one Non-Maskable Interrupt (NMI) and fifteen levels of maskable inter- rupts. Table 2-1 defines the interrupt assignments. Table 2-1 Interrupt assignment Interrupt Level Assigned to: RAM Parity Error, I/O Channel Error Timer Keyboard PIC 2 for level 8 to 15...

  • Page 30: Nmi Mask Register

    The RAM parity check is not used in this system. Therefore, when the I/O port ‘061’ bit-7 is read, this bit is always ‘0’. The cause and control ports of the NMI are shown in Table 2-2. Table 2-2 NMI Mask *control Check status RAM Parity Error...

  • Page 31: Direct Memory Access

    DMAC 1 contains channels 0 through 3. These channels transfer data as bytes (8 bits) between the I/Os and the T2200SX working memory in 64KB blocks. DMAC 2 contains channels 4 through 7. Channel 4 is used to cascade channels 0 through 3 to the Central Processor.

  • Page 32: Timer

    2.6 Timer An 82C54 equivalent Programmable Interval Timer (PIT) is also included in the SI T9901. The PIT has three timer/counter channels and its count clock is 1.19MHz. The timer/counters are used to generate the system timer clock, RAM refresh request, and speaker input. The time-of-day channel periodically generates the level-0 interrupt request to the central processor.

  • Page 33: Speaker

    2.7 Speaker The Speaker is driven by a pulse shaped audio signal from channel 2 of the PIT Device. To sound the speaker, the program sets (1) to “1” in the +T2GT bit of the System Command to generate the audio signal.

  • Page 34: Real Time Clock

    2.8 Real Time Clock The MC146818A RTC Device is used as the calendar clock for the system. The RTC contains 64 bytes of CMOS memory, of which 14 bytes are used to keep track of the year, month, day, day of the week, hour, minutes, and seconds.

  • Page 35: Floppy Disk Controller

    2.9 Floppy Disk Controller The TC8565 Floppy Disk Controller (FDC) is contained in the SI T9901. The FDC controls the internal 3.5-inch FDD and an external 5.25-inch FDD when one is connected to the system. The FDC can control the following floppy disks: 3.5-inch 2HD, 1.44MB 3.5-inch 2DD, 720KB 5.25-inch 2D, 360KB...

  • Page 36: Printer Port

    2.10 Printer Port A printer port is provided at the rear of the System Unit. It is a 25-pin D-shell connector to connect a standard Centronics compatible parallel printer. This port can also be used as a general input/ output port for other devices as long as those devices have the same interface configuration as the printer.

  • Page 37: Keyboard Controller

    There are two sets of scan codes that the T2200SX supports: scan code set 1 and scan code set 2. There are two differences between these scan code sets. One is a byte code assigned to the key, and the other is a break code that is generated when a pressed key is released.

  • Page 38: Mouse Control Command

    2.11.2 Mouse Control Command The mouse control commands control the MOUSE port of the T2200SX. The following table summarizes the mouse control commands. Table 2-8 Mouse control commands Code Function 'A7' Mouse Disable 'A8' Mouse Enable 'A9' Mouse Interface Test...
  • Page 39 ‘D3’ Virtual Mouse Interrupt This command sends the transfer parameter as mouse data to the CPU. ‘D4’ Mouse Command Read This command sends the transfer parameter from the CPU to mouse. 2-23...

  • Page 40: Rs-232-C Port

    This port uses the Universal Asynchronous Receiver/Transmitter (UART) circuits in the Super Integration (SI) chip of the T2200SX. This UART is referred to as the Asynchronous Communica- tion Element (ACE). ACEs are fully programmable and are capable of adding or removing start, stop, and/or parity bits to and from an external communication device, and can manage five-, six-, seven-, or eight-bit data with one, one and a half, or two stop-bit characters.

  • Page 41: Input/Output Port

    2.12.2 Input/Output Port The RS-232-C ports are assigned to COM1 and COM2. I/O port addressing and interrupts used are shown below. Table 2-10 RS-232-C ports and interrupts COM number Address Interrupt level COM1 3F8h - 3FFh IRQ4 COM2 2F8h - 2FFh IRQ3 The relationship between the RS-232-C ports and COM number is shown below.

  • Page 42: Connectors

    2.13 Connectors Appendix B contains the pin assignments for the connectors within the T2200SX. 2-26...
  • Page 43 Chapter 3 Troubleshooting Procedures...
  • Page 44 This page intentionally left blank...
  • Page 45 Contents T2200SX Troubleshooting ....................3-5 Troubleshooting Flowchart ....................3-6 Power Supply Troubleshooting Procedures ............... 3-8 System Board Troubleshooting Procedures ..............3-13 Floppy Disk Drive Troubleshooting Procedures .............. 3-22 Hard Disk Drive Troubleshooting Procedures ..............3-27 Keyboard Troubleshooting Procedures ................3-32 Display Troubleshooting Procedures ................
  • Page 46 This page intentionally left blank...

  • Page 47: T2200Sx Troubleshooting

    3.1 T2200SX Troubleshooting The troubleshooting procedures described in this chapter are used to isolate defective Field Replace- able Units (FRUs). The FRUs covered are: Power supply board (PCB FSTPSx) (x = PCB revision number) System board (PCB FSTFGx) (x = PCB revision number)

  • Page 48: Troubleshooting Flowchart

    3.2 Troubleshooting Flowchart The flowchart in Figure 3-1 is used as a guide for determining which FRU is defective. Before performing the flowchart procedures, perform the following: Disconnect all optional equipment from the T2200SX. Remove any diskette in the FDD. START...
  • Page 49 Insert ASP Diagnostics diskette into FDD, type TESTCE22, and press ENTER. Perform Keyboard Do typed Troubleshooting Procedures in characters appear Section 3.7. correctly? Connect wraparound connectors. Execute the Running Test several times. After confirming which test has Is an error detected an error, perform the detected by the appropriate troubleshooting...

  • Page 50: Power Supply Troubleshooting Procedures

    3.3 Power Supply Troubleshooting Procedures This section describes how to determine if the power supply board is defective. Start with Proce- dure 1 and continue with the other procedures as instructed. The procedures described in this section are: Procedure 1: Charge Check Procedure 2: Battery Indicator Check Procedure 3: Connector Check...
  • Page 51 Procedure 4: System Board Replacement Check Procedure 1 Charge Check When the AC adapter is connected and the power is off, the AC adapter charges the battery. The LED indicator labeled Battery glows amber. If the AC adapter doesn’t charge the battery, check the following items: Check 1 Check that the AC adapter cable is firmly plugged into the DC IN 18V connector on...
  • Page 52 Procedure 2 Battery Indicator Check When the AC adapter is connected to a live wall outlet and the T2200SX, the LED indicator labeled Battery will light red. If the AC adapter’s output voltage is abnormal or the power supply board is malfunctioning, the Battery indicator flashes red.
  • Page 53 The power supply board is connected to other units by some cables. Any of these cables may be disconnected from the power supply board. Refer to Chapter 5 for instructions on how to disas- semble the T2200SX and then perform the following check. Check 1 Make sure that the following cables are connected to the power supply board cor- rectly.
  • Page 54 DC IN 18V plug located on the system board. The power supply board or the system board may be damaged. Refer to Chapter 5 for instructions on how to disassemble the T2200SX, and then perform the following checks. Check 1 Replace the power supply board with a new one and restart the system.

  • Page 55: System Board Troubleshooting Procedures

    be damaged. 3.4 System Board Troubleshooting Procedures This section describes how to determine if the system board is defective or not functioning properly. Start with Procedure 1 and continue with the other procedures as instructed. The procedures de- scribed in this section are: Procedure 1: Message Check Procedure 2: Printer Port LED Check Procedure 3: Test Program Execution...
  • Page 56 Procedure 5: System Board Replacement Procedure 1 Message Check Turn on the power. If the system is loaded normally, refer to Procedure 3. If the following message is displayed on the screen, press the F1 key. Execute the setup operation. Detailed setup operation procedures are described in Chapter 4. **** Error in CMOS.
  • Page 57 Press any key when ready ..If the following message is displayed on the screen, refer to Procedure 4. CPU ERROR SYSTEM ROM CHECK SUM ERROR TIMER CH.2 OUT ERROR PIT ERROR MEMORY REFRESH ERROR FIRST 64KB MEMORY ERROR RTC ERROR CRTC ERROR VRAM ERROR KBC ERROR...
  • Page 58 UPDATE dure 2. Procedure 2 Printer Port LED Check Use the SETUP function in the Diagnostic Program to set the External A-B-PRT option to the PRT value and then turn off the power. Plug the printer port LED into the PRT/FDD connector on the back of the unit. While watching the printer port LED, turn on the power.
  • Page 59 Table 3-1 Printer port LED error statuses Printer Port Error LED Indication Test Item Message Status Pre-init for warm start test TIMER CH. 2 OUT ERROR PIT ERROR PIT test READ DATA = XXH WRITE DATA = XXH PIT Initialization PIT function test MEMORY REFRESH ERROR First 64KB memory test...
  • Page 60 Table 3-1 Printer port LED error statuses (continued) Printer Port Error LED Indication Test Item Message Status DMAC #1 ERROR READ DATA = XXXXH WRITE DATA = XXXXH DMAC test DMAC #2 ERROR READ DATA = XXXXH WRITE DATA = XXXXH DMAC initialization PIC #1 ERROR READ DATA = XXH...
  • Page 61 Procedure 3 Test Program Execution The Diagnostic Program located on the Diagnostics Diskette has several tests for testing the T2200SX. Perform the following tests from the Diagnostic Test Menu. System test Memory test Keyboard test Display test Floppy disk test...
  • Page 62 Procedure 4 LED Board and RTC Battery Check The LED board and the RTC battery are both connected to the system board. Either of these cables may be disconnected from the system board. Refer to Chapter 5 for instructions on how to disas- semble the system unit and check the following cable connections.
  • Page 63 Procedure 5 System Board Replacement Replace the system board. Refer to Chapters 5 and 6 for instructions on how to remove and replace the system board. If normal operation is restored after replacing the system board, the original system board is probably defective.

  • Page 64: Floppy Disk Drive Troubleshooting Procedures

    3.5 Floppy Disk Drive Troubleshooting Procedures This section describes how to determine if the floppy disk drive is defective. Start with Procedure 1 and continue with the other procedures as instructed. The procedures described in this section are: Procedure 1: Message Check Procedure 2: Format Check Procedure 3: Test Program Check Procedure 4: Connector Check...
  • Page 65 Procedure 1 Message Check Prepare a Toshiba MS-DOS system disk and insert it into the FDD. Turn on the power. If Toshiba MS-DOS loading starts normally, refer to Procedure 2. If the loading starts abnormally, the following message may appear on the screen. If the following message appears, refer to Procedure 4.
  • Page 66 Procedure 2 Format Check Prepare a new floppy disk by formatting it using the Toshiba MS-DOS FORMAT command. If the floppy disk does not format correctly, perform the following checks. Make sure the FDD indicator lights. If it does not light, refer to Procedure 4. If it Check 1 lights, refer to Check 2.
  • Page 67 Procedure 3 Test Program Check The FDD test program is stored on the T2200SX Diagnostics Disk. After loading Toshiba MS- DOS, run the Diagnostic Program (TESTCE22). Refer to Chapter 4 for detailed instructions about the FDD test. Prepare a formatted floppy disk and then perform the FDD test. The error codes and statuses are described in Table 3-2.
  • Page 68 Procedure 4 Connector Check The FDD is connected to the system board by the FDD cable. Disassemble the system unit and check the FDD. Refer to Chapter 5 for instructions on how to disassemble the system unit and then perform the following checks. Check 1 Make sure the FDD cable is firmly connected to the system board at PJ14.

  • Page 69: Hard Disk Drive Troubleshooting Procedures

    The contents of the hard disk will be erased when the HDD Troubleshooting 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.
  • Page 70 Procedure 1 Message Check When the power switch is turned on, the following message may appear on the screen. If the following message appears, refer to Procedure 4. HDD #0 ERROR After five seconds the following message will appear. Insert system disk in drive Press any key when ready..
  • Page 71 Procedure 2 Partition Check Insert the Toshiba MS-DOS system disk and turn on the computer. Then perform the following checks. Type C: and press Enter. If you cannot change to drive C, go to Check 2. If you Check 1 can change to drive C, go to Procedure 3.
  • Page 72 Procedure 3 Test Program Check The HDD test program is stored on the T2200SX Diagnostics Disk. After loading Toshiba MS- DOS, run the Diagnostic Program (TESTCE22) and perform the HDD test. Refer to Chapter 4 for detailed instructions about the HDD test.
  • Page 73 Procedure 4 Connector Check The HDD is connected to the system board by the HDD flexible cable. Disassemble the system unit and check the HDD. Refer to Chapter 5 for instructions on how to disassemble the computer and then perform the following checks. Check 1 Make sure the HDD flexible cable is firmly connected to the HDD.

  • Page 74: Keyboard Troubleshooting Procedures

    3.7 Keyboard Troubleshooting Procedures This section describes how to determine if the keyboard is defective. Start with Procedure 1 and continue with the other procedures as instructed. The procedures described in this section are: Procedure 1: Test Program Check Procedure 2: Connector Check 3-32...
  • Page 75 Procedure 1 Test Program Check The keyboard test program is stored on the T2200SX Diagnostics Disk. After loading Toshiba MS- DOS, run the Diagnostic Program (TESTCE22) and perform the keyboard test. Refer to Chapter 4 for detailed instructions about the keyboard test.
  • Page 76 Procedure 2 Connector Check The keyboard is connected to the system board by a 19-pin flat cable. Disassemble the system unit and check the keyboard. Refer to Chapter 5 for instructions on how to disassemble the system unit and then perform the following checks. Check 1 Make sure the following cable is firmly connected to the system board.

  • Page 77: Display Troubleshooting Procedures

    3.8 Display Troubleshooting Procedures This section describes how to determine if the display is defective. Start with Procedure 1 and continue with the other procedures as instructed. The procedures described in this section are: Procedure 1: Brightness and Contrast Volume Check Procedure 2: External Monitor Check Procedure 3: Connector Check Procedure 4: Replacement Check...
  • Page 78 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. If only the contrast does not change, refer to Procedure 3.
  • Page 79 Procedure 2 External Monitor Check Connect an external monitor to the RGB port and reboot the computer. If the external monitor displays a video signal, the System Display Controller is operating and the internal LCD assembly is probably faulty. Go to Procedure 3. If the external monitor does not display a video signal, perform the Power Supply or System Board Troubleshooting Procedures in Section 3.3 or 3.4.
  • Page 80 Procedure 3 Connector Check The display unit has an LCD module and FL inverter board. The LCD module and FL inverter board are connected by three cables. The LCD module and system board are connected by two signal cables. Any of these cables may be disconnected from the system board or LCD module. Disassemble the display unit and check these cables.
  • Page 81 Procedure 4 Replacement Check In this system unit the FL inverter board, LCD module, and system board are connected with the display circuits. Any of these units may be damaged. Refer to Chapter 5 for instructions on how to disassemble the system unit and then perform the following checks. Check 1 Replace the FL inverter board with a new one and recheck the display.
  • Page 82 This page intentionally left blank 3-40...
  • Page 83 Chapter 4 Tests and Diagnostics...
  • Page 84 This page intentionally left blank...
  • Page 85 Contents Introduction ........................4-5 Using the T2200SX Diagnostic Program ................4-6 Subtest Names ........................4-9 System Test ........................4-11 Memory Test ........................4-12 Keyboard Test ......................... 4-14 Display Test........................4-15 Floppy Disk Test ......................4-21 Printer Test ........................4-23 4.10 ASYNC Test ........................
  • Page 86 Tables Table 4-1 Subtest names ......................4-9 Table 4-2 Hardware bit status ....................4-11 Table 4-3 Error codes and error status names............... 4-33 Table 4-4 HDC status register contents ................4-35 Table 4-5 Error register contents ..................4-36 Table 4-6 Hard disk formatting sequence ................

  • Page 87: Introduction

    4.1 Introduction This chapter explains how to use the T2200SX Diagnostic Program (TESTCE22) to test the func- tions of all the T2200SX hardware modules. This program is located on the T2200SX Diagnostics 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).

  • Page 88: Using The T2200Sx Diagnostic Program

    Program To start the T2200SX Diagnostic Program, follow these steps: Make sure the computer is loaded with Toshiba MS-DOS. Turn on the T2200SX and insert the T2200SX Diagnostics Diskette in the floppy disk drive. Change to the A drive. Then type TESTCE22 and press Enter.
  • Page 89 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 T2200SX may be slightly different than the one shown above.
  • Page 90 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 re- starts the test cycle. Selecting NO returns you to the subtest menu after the test is completed.

  • Page 91: Subtest Names

    4.3 Subtest Names Table 4-1 describes the subtest for each test program in the Test Program Module. Table 4-1 Subtest names Subtest Test No. Test name Subtest name ROM checksum SYSTEM HW status RAM constant data RAM address pattern data RAM refresh MEMORY Protected mode...
  • Page 92 Table 4-1 Subtest names (continued) Subtest Test No. Test name 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 REAL TIMER Backup memory...

  • Page 93: System Test

    4.4 System Test Subtest 01 ROM checksum This test performs a ROM checksum test on the T2200SX’s system board from address F0000h - FFFFFh (64KB). Subtest 02 HW status NOTE: When you select this subtest, be sure to select no for the Test Loop and Error Stop messages.

  • Page 94: Memory Test

    This subtest is the same as Subtest 04; it is used for testing an optional memory card. Memory module capacity is 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 T2200SX. 4-12...
  • Page 95 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 00h, 55h, AAh, and FFh. 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.

  • Page 96: Keyboard Test

    4.6 Keyboard Test Subtest 01 Pressed key display (82/84) 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 “*”...

  • Page 97: Display Test

    4.7 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...
  • Page 98 After pressing Enter, 16 colors or 16 levels of gray for mode 13h are displayed as shown below. 320*200 GRAPHICS DISPLAY [ 13 ] BLACK BLUE GREEN CYAN MAGENTA BROWN WHITE GRAY LIGHT BLUE LIGHT GREEN LIGHT CYAN LIGHT LIGHT MAGENTA YELLOW INTENSE...
  • Page 99 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...
  • Page 100 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...
  • Page 101 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.
  • Page 102 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 ! ...

  • Page 103: Floppy Disk Test

    4.8 Floppy Disk Test CAUTION: Before running the floppy disk test, prepare a formatted work disk. Remove the Diagnostics Disk and insert the work disk into the FDD. The contents of the floppy disk will be erased. OPERATION When you select the floppy disk test from the DIAGNOSTIC TEST MENU, the following message will appear beneath the DIAGNOSTIC TEST MENU.
  • Page 104 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 CRC 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.

  • Page 105: Printer Test

    Select the channel number (1-3) ? The XXXXh data in the above message shows the printer I/O port address. The T2200SX supports three printer channels. Select the printer channel number and press Enter to display the PRINTER TEST menu. 4-23...
  • Page 106 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 %&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklmnopqr &’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklmnopqrs ‘()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrst ()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklmnopqrstu )*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklmnopqrstuv *+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklmnopqrstuvw Subtest 02...

  • Page 107: Async Test

    4.10 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 (C*D-4890005-A00) must be connected to the RS-232-C port.
  • Page 108 Subtest 05 Card modem loopback (2400BPS) NOTE: To execute this subtest, a card modem must be installed. This subtest sends the data from the RS-232-C direct cable to the built-in modem. The same data is then sent from the modem and compared to the original data. Subtest 06 Interrupt test (IRQ 4, 3, and 5) This subtest checks the Interrupt Request Levels (IRQ) 4, 3, and 5 from the send side.

  • Page 109: Hard Disk Test

    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, execute the Toshiba MS-DOS FDISK command, which will partition the hard disk drive.
  • Page 110 During the hard disk test, the following message will appear. 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 number are the cylinder number being tested, the fourth digit is the head number, and the last two digits are the sector number.
  • Page 111 CONTENTS Subtest 01 Sequential read The sequential read test is a sequential reading of all the tracks on the HDD starting at track 0. When all the tracks on the HDD have been read, the test starts at the maxi- mum track and reads the tracks on the HDD sequentially back to track 0.
  • Page 112 Subtest 08 ECC circuit This subtest checks the Error Check and Correction (ECC) circuit functions of the specified cylinder and head. Subtest 09 Sequential write This subtest writes specified 2-byte data to all cylinders. 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.

  • Page 113: Real Timer Test

    4.12 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. The follow- ing message will appear displaying the current date and time.

  • Page 114: Ndp Test

    4.13 NDP Test NOTE: To execute this test, a math co-processor (NDP) must be mounted on the system board. Subtest 01 NDP test This subtest checks the control word, status word, bus, and addition and multiplication functions. 4-32...

  • Page 115: Error Codes And Error Status Names

    4.14 Error Codes and Error Status Names Table 4-3 lists the error codes and error status names. Table 4-3 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...
  • Page 116 Table 4-3 Error codes and error status names (continued) 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)

  • Page 117: Hard Disk Test Detail Status

    4.15 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 num- ber.
  • Page 118 Table 4-5 Error register contents 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. (Identification) "1"--There was no ID field in the requested sector. Not used.

  • Page 119: Hard Disk Format

    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.

  • Page 120: Operations

    CAUTION: After physical formatting is finished, enter the Toshiba MS-DOS FDISK command which will partition the hard disk drive. 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.
  • Page 121 Select an interleave number (usually 1) and press Enter. The following message will be displayed. Unlock Format select (1:no,2:yes) ? Select whether or not the HDD has an unlock format and press Enter. If the system unit contains a JVC HDD, select yes. If the system unit contains a Conner HDD, select no.
  • Page 122 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 = xx Press [Track number (CCCCHH) key ? Type the four digit track number and press Enter.

  • Page 123: Head Cleaning

    4.17 Head Cleaning 4.17.1 Function Description This function cleans the heads in the FDD by executing a series of head load/seek and read opera- tions. A cleaning kit is necessary for cleaning the FDD heads. 4.17.2 Operations Select the HEAD CLEANING function from the DIAGNOSTICS MENU and press Enter. The following prompt is displayed.

  • Page 124: Log Utilities

    4.18 Log Utilities 4.18.1 Function Description This function logs error information generated while a test is in progress and stores the results in RAM. If the POWER switch is turned off, the error information will be lost. The error information is displayed in the following order: Error count (CNT) Test name (TS-NAME)
  • Page 125 The error information displayed on the screen can be manipulated with the following number keys. Number Function Scrolls the display to the next page. Scrolls the display to the previous page. Returns to the DIAGNOSTICS MENU. Erases all error log information in RAM. Outputs the error log information to a printer.

  • Page 126: Running Test

    Printer wrap around test (Y/N) ? Selecting Yes executes the printer wraparound test. A printer wraparound connector must be connected to the printer connector on the back of the T2200SX to properly execute this test. Type in Y or N and press Enter. The following message will appear.

  • Page 127: Fdd Utilities

    CAUTION: This program is only for testing a floppy disk drive. It is different from the Toshiba MS-DOS FORMAT command. This program can format a floppy disk (5.25-inch/3.5-inch) in the following formats: 2D: Double-sided, double-density, 48/67.5 TPI, MFM mode, 512 bytes, 9 sectors/ track.

  • Page 128: Operations

    4.20.2 Operations Select the FDD UTILITIES function from the DIAGNOSTICS MENU and press Enter. The following message will be displayed. [ FDD UTILITIES ] 1 : FORMAT 2 : COPY 3 : DUMP 9 : EXIT TO DIAGNOSTICS MENU PRESS [1] - [9] KEY FORMAT program Selecting FORMAT displays the following message.
  • Page 129 COPY program When COPY is selected, the following message appears. FLOPPY DISK FORMAT & COPY : Vx.xx Type select (0:2DD-2DD,1:2D-2D,2:2D -2HD,3:2HD-2HD) ? Select a media/drive type number and press Enter. A message similar to the one below will be displayed. Insert source disk into drive A: Press any key when ready.
  • Page 130 If 0, 1, or 2 is selected, the following message will appear. Select FDD number (1:A/2:B) ? Select an FDD drive number by typing in 1 or 2. The following message will appear. Insert source disk into drive A: Press any key when ready. Remove the Diagnostics Disk from the FDD and insert a source disk.

  • Page 131: System Configuration

    4.21 System Configuration 4.21.1 Function Description The System Configuration function contains the following configuration information for the T2200SX. BIOS ROM version Base memory size Display mode Number of floppy disk drives Number of ASYNC ports Number of hard disk drives...

  • Page 132: Setup

    4.22 SETUP 4.22.1 Function Description This function displays the current system setup information as listed below: Memory Total memory size Base memory size Extended memory size Hard RAM size Shadow BIOS ROM Display Display Adapter LCD display mode LCD gray scale LCD gray scale level Hard Disk Capacity Time and Date...

  • Page 133: Accessing The Setup

    Processing Speed = High This display is an example of the setup options available for the T2200SX. Notice that selecting the type of floppy disk drive is not an option. The T2200SX automatically determines what type of internal floppy disk drive is installed.

  • Page 134: Setup Descriptions

    4.22.4 SETUP Descriptions This section explains the alternate values for each SETUP option. Memory This group of options lets you configure the memory you install in the T2200SX. Total This field displays the amount of memory installed and is automatically calculated by the computer.
  • Page 135 Hard RAM Use this option to create a Hard RAM disk in the T2200SX’s memory. When you press the space bar or backspace key, the size of memory allocated for Hard RAM increases and decreases. The amount of memory you can allocate for Hard RAM depends on the size of extended memory.
  • Page 136 VCHAD (VGA Change Display program) are no longer valid. Hard Disk This section displays the size and type of hard disk installed in the T2200SX. Use either the space bar or backspace key to choose one of the two hard disk options.
  • Page 137 Printer port from output only (the default) to receive input as well as output. Do not change this setting if you’re con- necting the T2200SX to a printer. You would change this option only if you’re 4-55...
  • Page 138 This is the default setting. Bi-Directional Activates bi-directional operation. Power Save Options Use these options to increase the amount of time you can operate the T2200SX with battery power. CPU Sleep Mode Use this option to enable or disable the CPU sleep mode. This option also appears in the Pop-up Window.
  • Page 139 Always OFF value is not displayed if the AC adapter is connected. Others Whether or not you need to configure the T2200SX with these options depends primarily on the type of software or peripherals you use. Resume Mode This option enables and disables the AutoResume feature. You can also set this option using the Pop-up Window.
  • Page 140 Battery Alarm This option enables and disables the battery alarm. The battery alarm sounds when the battery pack is low. This option also appears in the Pop-up Window. Enables the alarm. This is the default. Disables the alarm. Processing Speed This option determines the operating speed of the processor.
  • Page 141 Chapter 5 Disassembly Procedures...
  • Page 142 This page intentionally left blank...
  • Page 143 Contents General ..........................5-5 Removing the Battery Pack ....................5-7 Removing the Optional Memory Card and Card Modem ..........5-8 Removing the LCD Module and FL Inverter Board ............5-10 Removing the Sub Battery and Battery Terminal Assembly .......... 5-15 Removing the Hard Disk Drive ..................
  • Page 144 This page intentionally left blank...

  • Page 145: General

    5.1 General This chapter provides detailed procedures for disassembling the T2200SX to replace Field Replaceable Units (FRUs). The following FRUs are covered in this section: System board (PCB FSTFGx) LED board (PCB FSTLEx) Power supply board (PCB FSTPSx) FL inverter board...
  • Page 146 You will remove and replace many screws when you disassemble the T2200SX. When you remove screws, make sure they are placed in a safe place and identified with the correct parts.

  • Page 147: Removing The Battery Pack

    5.2 Removing the Battery Pack Turn off the power to the T2200SX and disconnect the power cord, AC adapter, and all external cables to the T2200SX. Facing the right side of the computer, push up and hold the battery cover release lever as you slide the battery pack cover toward the back of the computer.

  • Page 148: Removing The Optional Memory Card And Card Modem

    5.3 Removing the Optional Memory Card and Card Modem Turn off the power to the T2200SX and disconnect the power cord, AC adapter, and all external cables to the T2200SX. Then remove the battery pack as indicated in Section 5.2.
  • Page 149 Turn the computer so that the right side is facing you. Lift the card modem cover to expose the card modem slot. Pull the tab until the card modem is released from its connector. Then remove the card modem. CAUTION: Do not touch the connecting edge of the card modem. Debris or grease in the connector may cause modem access problems.

  • Page 150: Removing The Lcd Module And Fl Inverter Board

    5.4 Removing the LCD Module and FL Inverter Board Remove the battery pack as indicated in Section 5.2. Open the display panel. Then remove the two rubber cushions and the two plastic seals from the LCD mask. Then lay the LCD module back on the LCD support block to support the LCD module.
  • Page 151 While holding the cover latches up, separate the LCD mask from the LCD cover starting with the two top corners of the LCD mask. Working from the top and then down the sides, release the top and side plastic lock latches on the LCD mask. cover latch LCD cover LCD mask...
  • Page 152 Rotate the LCD mask to the right and press up on the right hinge to release the lower right corner of the LCD mask. right hinge Figure 5-8 Removing the LCD mask WARNING: DO NOT touch the LCD panel where the Warning label is affixed. Thin film transistors (TFTs) are located in this area and they can be easily damaged.
  • Page 153 Carefully lift the mylar shielding and tape which cover the connectors on the LCD module. Then disconnect the two display cables from CN1 and CN2 on the LCD module. Remove the one (M2x4) screw from the top display support, one (M2.5x4) screw and one (M2.5x6 silver) screw from the bottom display support.
  • Page 154 Remove the two (M2.5x4) screws. Then lift and remove the LCD cover (Figure 5-12). LCD cover M2.5x4 screws Figure 5-12 Removing the LCD cover Place the LCD module onto the LCD support block and set the two in a safe place. 5-14...

  • Page 155: Removing The Sub Battery And Battery Terminal Assembly

    5.5 Removing the Sub Battery and Battery Terminal Assembly Remove the battery pack, memory card and card modem as indicated in Sections 5.2 and 5.3. Close the LCD display if it is open and remove the PS/2 mouse cover, the key pad connector cover, the EXP connector cover, and the I/O connector cover (Figure 5-13).
  • Page 156 Remove the tape securing the sub battery and its wires. Press down on the power supply board while disconnecting the sub battery from PJ3 on the sub battery power supply board. Then remove the sub battery from the computer (Figure 5-14). Figure 5-14 Removing the sub battery Carefully remove the tape securing the battery terminal assembly wires and the HDD cable.

  • Page 157: Removing The Hard Disk Drive

    terminal assembly from the computer. 5.6 Removing the Hard Disk Drive Remove the battery pack, memory card, card modem, and battery terminal assembly as indicated in Section 5.5. NOTE: It is not necessary to disconnect and remove the sub battery as indicated in Step 5 of Section 5.5.
  • Page 158 Lift the middle base assembly away from the cover assembly by lifting up on the inside edge of the middle base assembly. Rest the middle base assembly on the system board support block. Remove the two metal card puller assemblies from the middle base assembly (Figure 5-17). Remove the two (M2x4) connector panel bracket screws and remove the two ground plates from the connector panel (Figure 5-17).
  • Page 159 Figure 5-18 Removing the middle base assembly Rest the system board assembly on the system board support block behind the computer to support the flexible cables and connector panel. CAUTION: If stressed, the HDD cable can easily rip at the fold in the cable. Therefore, make sure the HDD cable rests in the same position on the support block as when the HDD is assembled in the computer.

  • Page 160: Removing The Floppy Disk Drive

    Figure 5-19 Removing the HDD from the middle base assembly 5.7 Removing the Floppy Disk Drive Remove the battery pack, memory card, card modem, sub battery, and battery terminal assembly as indicated in Section 5.5. Remove the four (M2x4) screws securing the middle base assembly and the five (M2x4) screws securing the top half of the system board.
  • Page 161 Disconnect the FDD cable from the pressure plate connector PJ4 on the system board (Figure 5-21). CAUTION: The FDD cable may catch on the system board components. Lift the cable up before disconnecting it from the connector. Lift the FDD and remove it from the keyboard base (Figure 5-21). CAUTION: Be careful not to damage the mouse cable and the catch hook on the M2.5x4 mouse cable...

  • Page 162: Removing The System Board, Power Supply Board, And Speaker

    5.8 Removing the System Board, Power Supply Board, and Speaker Remove the battery pack, memory card, card modem, sub battery, battery terminal assembly, and FDD as indicated in Section 5.7. Disconnect the RTC battery cable from PJ2 on the system board and remove the RTC battery (Figure 5-22).
  • Page 163 Remove the four (M2x4) screws securing the system board to the keyboard base (Figure 5-23). M2x4 screws Figure 5-23 Removing the four system board screws CAUTION: The system board must only be handled as follows: (1) Hold the system board vertically by the connector panel, or (2) Place one hand beneath the rigid portion of the system board and the other hand beneath the connector panel when handling the board horizontally.
  • Page 164 Remove the two (M2x4) screws securing the speaker to the cover assembly and then lift the speaker assembly out of the computer (Figure 5-25). M2x4 screws speaker cover assembly Figure 5-25 Removing the speaker 5-24...

  • Page 165: Removing The Keyboard

    UPDATE 5.9 Removing the Keyboard Remove the floppy disk drive, system board, and power supply board as indicated in Sections 5.7 and 5.8. NOTE: It is not necessary to remove the speaker as indicated in Step 13 of Section 5.8. Remove the six (M2x4) screws securing the keyboard base to the cover assembly.

  • Page 166: Removing Other Replaceable Parts

    5.10 Removing other Replaceable Parts 5.10.1 LCD Cable Harness Remove the LCD module and FL inverter board as indicated in Section 5.4. Remove the battery terminal assembly as indicated in Section 5.5. NOTE: It is not necessary to disconnect and remove the sub battery as indicated in Step 5 of Section 5.5.

  • Page 167: Led Board

    Remove the four (M2x4) screws securing the middle base assembly and the five (M2x4) screws securing the top half of the system board. Remove the ground plate positioned under the middle base assembly and over the system board (see Figure 5-16). Remove the one (M3x6 silver) ground terminal screw from the back of the computer (see Figure 5-16).
  • Page 168 Lift the middle base assembly away from the cover assembly by lifting up on the inside edge of the middle base assembly. Rest the middle base assembly on the system board support block. CAUTION: Thin film transistors (TFTs) are located throughout the LED Board. Only handle the board by its edges to avoid damaging the TFTs.
  • Page 169 Chapter 6 Reassembly Procedures...
  • Page 170 This page intentionally left blank...
  • Page 171 Contents General..........................6-5 Installing the Sensor Harness and LCD Cable Harness ............6-6 Installing the Keyboard ..................... 6-7 Installing the Speaker and LED Board ................6-8 Installing the System Board and Power Supply Board ............6-9 Installing the Floppy Disk Drive..................6-11 Installing the Hard Disk Drive ..................
  • Page 172 This page intentionally left blank...

  • Page 173: General

    6.1 General Due to the intricate nature of the T2200SX, this separate reassembly section has been provided to assist you in the correct and exact reassembly steps needed for the machine. Before You Begin Review the procedures in this chapter before you begin reassembling the T2200SX. Familiarize...

  • Page 174: Installing The Sensor Harness And Lcd Cable Harness

    6.2 Installing the Sensor Harness and LCD Cable Harness CAUTION: Be careful not to damage the microswitch located on the sensor harness. Place the sensor harness in position and secure it with the two (M2x4) screws at the top. Route the LCD cable harness through the top cover. The end with the two connectors and ferrite core should be positioned inside the top cover.

  • Page 175: Installing The Keyboard

    UPDATE 6.3 Installing the Keyboard Place the keyboard into the computer (Figure 6-1). Make sure all cables are clear from being pinched between the keyboard and the top cover. Align the keyboard to the four guide pins on the top cover and make sure the keyboard is secured by the two latches on the top cover.

  • Page 176: Installing The Speaker And Led Board

    6.4 Installing the Speaker and LED Board Replace the speaker, silver side down, into the computer and secure it with the two (M2x4) screws (Figure 6-3). M2x4 screws speaker Figure 6-3 Securing the speaker Peel the protective covering from the new LED board. Place the LED board in position by aligning it with the guide pins.

  • Page 177: Installing The System Board And Power Supply Board

    6.5 Installing the System Board and Power Supply Board Lay the rigid portion of the system board into position in the computer. Make sure the guide pins are aligned and that the flexible portion of the system board is resting on the system board support block.
  • Page 178 Reinstall the remaining three (M2x4) screws, making sure the system board is in the correct position before firmly securing the screws (Figure 6-5). M2x4 screws M2x4 screw metal tab Figure 6-5 Securing the system board Reconnect the following cables to the system board (Figure 6-6). Keyboard cable to pressure plate connector PJ10 Speaker cable to PJ8 Sensor harness (Panel close switch) cable to PJ15...

  • Page 179: Installing The Floppy Disk Drive

    6.6 Installing the Floppy Disk Drive Place the FDD into position on the keyboard base. Make sure the FDD is underneath the catch hook on the keyboard base. Secure the FDD to the keyboard base with the four (M2.5x4) screws (Figure 6-7). NOTE: Be sure to use only M2.5x4 screws for securing the FDD.

  • Page 180: Installing The Hard Disk Drive

    6.7 Installing the Hard Disk Drive Place the HDD in the middle base assembly with the disk label facing down. Insert, but do not completely tighten, the four special screws used to secure the HDD to the middle base assembly (Figure 6-8). Then tighten each screw evenly. special screws middle base...
  • Page 181 UPDATE Position the two ground plates on the connector panel bracket and then install the two (M2x4) screws for the connector panel bracket (Figure 6-10). ground plate M2x4 EXP memory M2x4 modem connector screws connector screws M2x4 connector panel bracket screws card puller assemblies...

  • Page 182: Installing The Sub Battery And Battery Terminal Assembly

    6.8 Installing the Sub Battery and Battery Terminal Assembly Place the sub battery and its wires underneath the PS/2 mouse cable. Reconnect the sub battery wires to PJ3 on the power supply board. Secure the sub battery inside the computer with tape. Lift the HDD cable and route the battery terminal assembly wires through the slot in the middle base assembly.

  • Page 183: Installing The Bottom Cover

    6.9 Installing the Bottom Cover Set the bottom cover on the base assembly but DO NOT press the bottom cover into position. Gently press the FDD door inward with your finger as you press the bottom cover to the base assembly (Figure 6-13).

  • Page 184: Installing The Fl Inverter Board And Lcd Module

    6.10 Installing the FL Inverter Board and LCD Module Place the LCD support block behind the computer. Then set the LCD cover on the LCD support block. CAUTION: Before proceeding make sure the display cables are not being pinched by the left hinge of the LCD cover.
  • Page 185 UPDATE with the guide pin on the LCD cover. Connect the two display signal cables to CN1 and CN2 on the left side of the LCD module. CAUTION: Be extremely careful not to damage any components on the LCD module. Route the FL inverter board power cable along the bottom of the LCD module and then position this cable under the white FL lamp cable located at the lower right corner of the LCD module.
  • Page 186 screws. Insert the one (M2x4) screw to secure the upper display support to the LCD cover (Figure 6-17). NOTE: There two screw holes in the right corner of the upper display support. The M2x4 screw is inserted into the inside screw hole. The remaining screw hole is used for M2x4 screw display support display support...
  • Page 187 Figure 6-18 Placing the LCD mask over the right hinge Position the bottom left corner over the left hinge. Then press on the hinge to secure the LCD mask to the hinge. Secure the latches by moving clockwise around the mask, starting with the left side of the cover latch cover latch LCD support...
  • Page 188 Install the four (M2x4) screws to secure the LCD mask (Figure 6-21). rubber cushions M2x4 screws cover latch plastic seals M2x4 screws LCD mask Insert the two rubber cushions and the two plastic seals on the LCD mask (Figure 6-21). 6-20...

  • Page 189: Installing The Optional Memory Card And Card Modem

    Figure 6-21 Installing the LCD mask 6.11 Installing the Optional Memory Card and Card Modem Turn the memory card upside down so that the word “insert” and an arrow pointing toward the connecting edge are face up. Carefully slide the memory card into the narrow slot and push gently to ensure a firm memory card connection (Figure 6-22).

  • Page 190: Installing The Battery Pack

    6.12 Installing the Battery Pack Make sure the Toshiba logo and pull tab are facing up on the battery pack. CAUTION: Damage can occur to the computer if the battery pack is placed in the battery well upside down. Slide the battery pack into the battery slot until it stops (Figure 6-23).
  • Page 191 Appendices App-1...
  • Page 192 This page intentionally left blank App-2...
  • Page 193 Contents Appendix A System Board Layout ........................ App-5 System Board FSTFGx (ICs) ..................... App-5 System Board FSTFGx (Connectors) ..................App-9 System Board FSTFGx (OSCs) ....................App-13 Appendix B Pin Assignments ........................App-16 PJ1 EXP MEM Connector ...................... App-16 PJ2 RTC Connector ........................ App-16 PJ3 PRT/FDD (Ext) Connector ....................
  • Page 194 Figures Figure A-1 System board FSTFGx (ICs) (front) ....................App-5 Figure A-2 System board FSTFGx (ICs) (back) ....................App-6 Figure A-3 System board FSTFGx (connectors) (front) ..................App-9 Figure A-4 System board FSTFGx (connectors) (back) ..................App-10 Figure A-5 System board FSTFGx (OSCs) (front) .................... App-13 Figure A-6 System board FSTFGx (OSCs) (back) ....................

  • Page 195: Appendix A System Board Layout

    Appendix A System Board Layout System Board FSTFGx (ICs) Figure A-1 System board FSTFGx (ICs) (front) App-5...
  • Page 196 Figure A-2 System board FSTFGx (ICs) (back) App-6...
  • Page 197 Table A-1 ICs on the system board FSTFGx Callout Number Name SI: SI Super Integration (T9901) Real Time Clock (RTC) IC19 KBC: Keyboard Controller (M37452M4) IC23, 24 Video RAM CPU: Central Processing Unit (80386SX-20) System Controller Gate Array IC4, 5, 35, 36 System RAM Backup RAM BIOS ROM...
  • Page 198 This page intentionally left blank App-8...

  • Page 199: System Board Fstfgx (Connectors)

    System Board FSTFGx (Connectors) Figure A-3 System board FSTFGx (connectors) (front) App-9...
  • Page 200 Figure A-4 System board FSTFGx (connectors) (back) App-10...
  • Page 201 Table A-2 Connectors on the system board FSTFGx Callout Number Name EXP MEM Connector RTC Battery Connector PRT/FDD (Ext) Connector FDD Connector HDD Connector Asynchronous Connector Card Modem Connector Speaker Connector Power Supply Connector PJ10 Keyboard Connector PJ11 LED Connector PJ12, 13 LCD Connectors PJ14...
  • Page 202 This page intentionally left blank App-12...

  • Page 203: System Board Fstfgx (Oscs)

    System Board FSTFGx (OSCs) Figure A-5 System board FSTFGx (OSCs) (front) App-13...
  • Page 204 Figure A-6 System board FSTFGx (OSCs) (back) App-14...
  • Page 205 Table A-3 OSCs on the system board FSTFGx Callout Number Name 40.0 MHz Oscillator for CPU 44.9 MHz Oscillator for video 28.322 MHz Oscillator for video 25.175 MHz Oscillator for video 14.7456 MHz Oscillator for COM 14.31818 MHz Oscillator for KBC 32.768 KHz Oscillator for RTC 24 MHz Oscillator for FDC and VFO App-15...

  • Page 206: Appendix B Pin Assignments

    Appendix B Pin Assignments PJ1 EXP MEM Connector Table B-1 EXP MEM connector pin assignment (40-pin) Signal Signal RAMV D03;100 MA07;101 D04;100 MA06;101 D05;100 MA05;101 D06;100 MA04;101 D07;100 MA03;101 D08;100 MA02;101 D09;100 MA01;101 D10;100 DRMEM;100 MA08;101 MA00;101 CASH;002 D00;100 RAS4;000 D01;100 RAS3;000 D02;100...

  • Page 207: Pj3 Prt/Fdd (Ext) Connector

    PJ3 PRT/FDD (Ext) Connector Table B-3 PRT/FDD (Ext) connector pin assignment (25-pin) Signal Signal AUTFD;000 PDB00;100 ERROR;000 PD01;100 PINT;000 PD02;100 SLIN;000 PD03;100 PD04;100 PD05;100 PD06;100 PD07;100 ACK;000 BSY;100 PE;100 SELCT;100 PJ4 FDD (Int) Connector Table B-4 FDD (Int) connector pin assignment (25-pin) Signal Signal ISSEL;000...

  • Page 208: Pj5 Hdd I/F Connector

    PJ5 HDD I/F Connector Table B-5 HDD I/F connector pin assignment (50-pin) Signal Signal (N/C) (N/C) (N/C) (N/C) (N/C) IOWR;000 (N/C) (N/C) IORD;000 RESET;000 (N/C) SD07;102 (N/C) SD08;102 IIRDY;100 SD06;102 SD09;102 IRQ14;100 SD05;102 IIO16;000 SD10;102 SA01;100 SD04;102 (N/C) SD11;102 SA00;100 SD03;102 SA02;100 SD12;102...

  • Page 209: Pj7 I/O Card (Modem) Connector

    PJ7 I/O Card (Modem) Connector Table B-7 I/O card (modem) connector pin assignment (68-pin) Signal Signal SD03;100 (N/C) SD04;100 DRQ1;100 SD05;100 DRQ2;100 SD06;100 DRQ3;100 SD07;100 DRQ4;100 IRQ4;100 SA10;100 (N/C) SMER;000 (N/C) SA11;100 CIORD;000 SA09;100 CIOWR;000 SA08;100 SA17;100 SA13;100 SA18;100 SA14;100 SA19;100 SMEW;000 DACK1;000...

  • Page 210: Pj8 Speaker Connector

    PJ8 Speaker Connector Table B-8 Speaker connector pin assignment (3-pin) Signal Signal SPOUT0;100 (N/C) SPOUT1;100 PJ9 PS I/F Connector Table B-9 PS I/F connector pin assignment (30-pin) Signal Signal CURNT CPCNF;100 CURNT BEEP;000 CURNT PCLR;001 DSPV LB;100 DCIN CRG;100 DCIN (N/C) DCIN P12V...

  • Page 211: Pj10 Kb I/F Connector

    B.10 PJ10 KB I/F Connector Table B-10 KB I/F connector pin assignment (19-pin) Signal Signal KBOT00;001 KBOT03;001 KBRT6;100 KBOT04;001 KBRT0;100 KBOT05;001 KBRT2;100 KBOT06;001 KBRT3;100 KBOT08;001 KBRT1;100 KBOT02;001 KBRT7;100 KBOT07;001 KBRT5;100 KBOT09;001 KBRT4;100 KBOT10;001 KBOT01;001 B.11 PJ11 LED Connector Table B-11 LED connector pin assignment (11-pin) Signal Signal CHG;100...

  • Page 212: Pj14 Expansion Connector

    B.14 PJ14 Expansion Connector Table B-14 Expansion connector pin assignment (150-pin) Signal Signal DCIN SA18;101 DCIN SA19;101 DCIN SD00;101 DCIN SD01;101 CURNT SD02;101 CURNT SD03;101 CURNT CURNT SD04;101 ADPCN;100 SD05;101 SD06;101 RVCC SD07;101 SMEW;001 CPCNF;100 SMER;001 MDMSL;001 COMCLK;101 IOWR;001 MIRQ;001 IORD;001 SPKTON;001 TC;101...

  • Page 213: Pj15 Ten Keypad Connector

    Table B-14 Expansion connector pin assignment (150-pin) (continued) Signal Signal SD11;101 PHYSYNC;100 SD12;101 PVSYNC;100 IRQ12;101 EKBDAT;100 SD13;101 EKBCLK;100 SD14;101 TENKEY;100 IRQ5;101 MDUSED;100 SD15;101 MDSECK;100 LA22;101 LA23;101 STROB;000 DRQ2;101 PDB00;100 LA21;101 PDB01;100 LA19;101 PDB02;100 LA20;101 PDB03;100 DACK6;001 PDB04;100 PDB05;100 REFMD;001 PDB06;100 LA18;101 PDB07;100 MASTER;001...

  • Page 214: Pj16 Numeric Keypad Connector

    B.16 PJ16 Numeric Keypad Connector Table B-16 Numeric keypad connector pin assignment (3-pin) Signal Signal TENKEY;100 (N/C) B.17 PJ17 CRT I/F Connector Table B-17 CRT I/F connector pin assignment (15-pin) Signal Signal RED;101 (N/C) LGREN;101 BLUE;101 (N/C) (N/C) (N/C) PHSYNC;100 PVSYNC;100 (N/C) B.18...

  • Page 215: Appendix Cascii Character Codes

    Appendix C ASCII Character Codes Table C-1 ASCII character codes App-25...

  • Page 216: Appendix D Keyboard Scan/Character Codes

    Appendix D Keyboard Scan/Character Codes Table D-1 Scan codes (set 1 and 2) Code set 1 Code set 2 Cap No. Keytop Note Make Break Make Break F0 0E F0 16 F0 1E F0 26 F0 25 F0 2E F0 36 7 &...
  • Page 217 Table D-1 Scan codes (set 1 and 2) (continued) Code set 1 Code set 2 Cap No. Keytop Note Make Break Make Break Shift (L) F0 12 No. 102 key F0 61 F0 1A F0 22 F0 21 F0 2A F0 32 F0 31 F0 3A...
  • Page 218 Table D-1 Scan codes (set 1 and 2) (continued) Code set 1 Code set 2 Cap No. Keytop Note Make Break Make Break F0 06 F0 04 F0 0C F0 03 F0 0B F0 83 F0 0A F0 01 F0 09 F0 78 F0 07 PrintSc...
  • Page 219 Table D-2 Scan codes with Shift key Code set 1 Code set 2 Keytop Make Break Make Break E0 AA E0 52 E0 D2 E0 2A E0 F0 12 E0 70 E0 F0 70 E0 12 E0 AA E0 53 E0 D3 E0 2A E0 F0 12 E0 71 E0 F0 71 E0 12...
  • Page 220 Table D-4 Scan codes with Fn key Code set 1 Code set 2 Cap No. Keytop Make Break Make Break E0 1C E0 9C E0 5A E0 F0 5A CTRL E0 1D E0 9D E0 14 E0 F0 14 LALT E0 38 E0 B8 E0 11...

  • Page 221: Appendix E Keyboard Layouts

    Appendix E Keyboard Layouts U.S.A. Keyboard Figure E-1 U.S.A. keyboard U.K. Keyboard Figure E-2 U.K. keyboard App-31...

  • Page 222: Keyboard

    German Keyboard Figure E-3 German keyboard French Keyboard Figure E-4 French keyboard App-32...

  • Page 223: Spanish And Latin Keyboard

    Spanish and Latin Keyboard Figure E-5 Spanish and Latin keyboard Italian Keyboard Figure E-6 Italian keyboard App-33...

  • Page 224: Scandinavian (Dk, No, Sw) Keyboard

    Scandinavian (DK, NO, SW) Keyboard Figure E-7 Scandinavian (DK, NO, SW) keyboard Swiss (French/German) Keyboard Figure E-8 Swiss (French/German) keyboard App-34...

  • Page 225: Canadian Keyboard

    Canadian Keyboard Figure E-9 Canadian keyboard E.10 Keycap Number Keyboard Figure E-10 Keycap number keyboard App-35...

  • Page 226: Appendix F Wiring Diagrams

    Appendix F Wiring Diagrams Printer Wraparound Connector +PD7 (15) -ERROR +PD6 (14) -AUTFD +PD5 (13) +SELECT +PD4 (16) -PINIT +PD3 ( 1) -STROBE (10) -ACK +PD2 (12) +PE +PD1 (17) -SLIN +PD0 (11) +BUSY Figure F-1 Printer wraparound connector RS-232-C Wraparound Connector Figure F-2 RS-232-C wraparound connector RS-232-C Direct Cable (9-pin to 9-pin) Figure F-3 RS-232-C direct cable (9-pin to 9-pin)

  • Page 227: Rs-232-C Direct Cable (9-Pin To 25-Pin)

    RS-232-C Direct Cable (9-pin to 25-pin) (22) RI (20) DTR Figure F-4 RS-232-C direct cable (9-pin to 25-pin) App-37...

  • Page 228: Appendix G Understanding Hexadecimal

    Appendix G Understanding Hexadecimal The table and explanation shown below are intended for those who are familiar with the binary numbering system but wish to have a review of the hexadecimal numbering system. Knowing how to convert from binary notation to hexadecimal and decimal notations will help you to interpret the Printer Port LED Connector.

  • Page 229: Appendix H Using The Printer Port Led

    Appendix H Using the Printer Port LED The Printer Port LED provides an eight digit hexadecimal (hex) code used in determining which portion of the Initial Reliability Test (IRT) has failed. After the Printer Port LED is attached to the Printer Port and the system is turned on, the Printer Port LED will indicate an error status in hex code.

  • Page 230: Appendix I Acronym Glossary

    Appendix I Acronym Glossary ACRONYM DEFINITION BIOS Basic Input/Output System Central Processing Unit DSPV Display Voltage Electrostatic Discharge Floppy Disk Drive Fluorescent Light (Lamp) Hard Disk Drive Hexadecimal Integrated Device Electronic Intelligent Power Supply Initial Reliability Test Liquid Crystal Display Light Emitting Diode Random Access Memory RAMV...

Table of Contents