Page 1 An internal 810 million byte (770 MB) Hard Disk Drive (HDD). A 3.5-inch Floppy Disk Drive (FDD) supports 2HD (1.44 MB) floppy disks and 2DD (720 KB) floppy disks. The FDD can also be installed in an attachment (option with 400CS) for con- nection as an external device.
Page 2 Batteries Three different batteries: a Li-Ion main battery, a backup battery (for memory backup), and a RTC battery (Real Time Clock). Expansion memory slot An optional 8, 16, or 32 MB memory module can be installed in the memory slot. Parallel port Can be used to connect a Centronics compatible printer or other parallel device;...
Page 3 AccuPoint A pointer control stick, located in the center of the keyboard, provides convenient control of the cursor without requiring desk space for a mouse. Infrared port This machine incorporates an IrDA1.0 (115.2Kbps supported) standard infrared transmitter and receiver. Sound System A Sound Blaster compatible sound system provides capability to record sound and play it back with a built-in microphone and speaker.
Page 4 The 400 Series Personal Computer is shown in figure 1-1. Figure 1-1 400 series personal computer The 400 system configuration is shown in figure 1-2. Figure 1-2 400 system unit configuration 400 Series...
Page 5: System Unit Block Diagram
System Unit Block Diagram Figure 1-3 is a block diagram of the 400 series system unit. Figure 1-3 400 series system board block diagram 400 Series...
Page 6 The 400 series system board is composed of the following major components: One Intel Pentium processor 75 MHz with VRT 64-bit microprocessor Intel Pentium processor operates at 75 MHz and 2.9 volts. Standard RAM 8 MB, four 1Mx16-bit chips 3.3 volt operation No parity bit Access time 70 ns Data transfer is 64-bit width...
Page 7 System Controller Gate Array (SCPCNT-GA) This gate array has the following functions: CPU control SMI control CPU clock control Memory control 64-bit bus memory control 32-bit bus memory control Bus control 64-bit data bus <==>32-bit data bus 32-bit local bus control Address latch control I/O register control Processing speed control...
Page 8 Video Controller Chips & Technologies F65546 is used Controls internal TFT/STN color LCD and external SVGA compatible CRT Keyboard Controller (KBC) One M38802M4 chip is used This KBC includes the keyboard scan controller and keyboard interface controller The KBC controls the internal keyboard, external keyboard, PS/2 mouse Real Time Clock (RTC) One T9934 chip is used The T9934 has 128 of bytes memory...
Page 9 3.5-inch Floppy Disk Drive The 400 series 3.5-inch Floppy Disk Drive (FDD) is a thin, high-performance reliable drive that supports 720-KB (formatted) 2DD and 1.44-MB (formatted) 2HD 3.5-inch floppy disks. The 400 series FDD is shown in figure 1-4. Figure 1-4 3.5-inch FDD The specifications for the FDD are listed in table 1-1.
Page 10: Inch Hard Disk Drive
2.5-inch Hard Disk Drive The 770 MB Hard Disk Drive (HDD) is a random access non-volatile storage device. It has a non-removable 2.5-inch magnetic disk and mini-winchester type magnetic heads. The 400 series is shown in figure 1-5. Figure 1-5 2.5-Inch HDD Specifications for the HDD are listed in table 1-2.
Page 11 Keyboard The 82-(USA) or 84-(European) keyboard is mounted on the 400 series system unit. The keyboard is connected to the keyboard controller on the system board through a 25-pin flat cable. The 400 series pointer control stick, located in the center of the keyboard, provides convenient control of the cursor without requiring desk space for a mouse.
Page 12 CD-ROM Drive The 400 series internal CD-ROM drive accommodates either 12 cm (4.72") or 8 cm (3.15") CDs (option with 400CS). It provides high-performance, quadruple-speed play (reads 300KB per second). This drive supports the following formats: Audio CD Photo CD ISO 9660 The 400 series CD-ROM drive is shown in figure 1-7.
Page 13 1.7.1 STN Color LCD Module The 400CS STN color LCD is backlit and supports 640x480 pixels with a Video controller. This video controller includes the functions of Video Graphics Array (VGA). The 400CS LCD receives vertical and horizontal synchronizing signals, 16-bit data signal, 8- bit upper block data signal, 8-bit lower block data signal, and has a shift clock for data transmission.
Page 14 1.7.2 STN Color Fluorescent Lamp (FL) Inverter Board The FL inverter board supplies high frequency current to light the LCD’s Fluorescent Lamp. The specifications for the FL inverter are listed in table 1-5. Table 1-5 STN color FL inverter board specifications Item Specifications Input...
Page 15 TFT Color LCD (400CDT) The TFT Color Liquid Crystal Display (LCD) contains an LCD module, a Fluorescent Lamp (FL), and an FL inverter board. 1.8.1 LCD Module The 400CDT TFT color LCD supports 640x480 pixels with an internal display controller. This controller includes the functions of Video Graphics Array (VGA) and Super VGA (SVGA) for external display.
Page 16 1.8.2 Fluorescent Lamp (FL) Inverter Board The FL inverter board supplies high frequency current to light the LCD’s Fluorescent Lamp. The specifications for the FL inverter are listed in table 1-7. Table 1-7 FL inverter board specifications Item Specifications Input Voltage (VDC) Power...
Page 17: Power Supply
Power Supply The power supply supplies five kinds of voltages to the 400 series system board. The power supply has one microprocessor, which operates at 500 KHz, and performs the following functions: Determines if the AC cable or battery is connected to the computer. Detects AC output and circuit malfunctions.
Page 18 1.10 Batteries The 400 series has three types of batteries: Main battery pack Backup battery Real Time Clock (RTC) battery Battery specifications are listed in table 1-9. Table 1-9 Battery specifications Battery name Material Output voltage Capacity Main battery Lithium-Ion 10.8 V 1,200 mAH Backup battery...
Page 19 1.10.2 Battery Charging Control Battery charging is controlled by a power supply microprocessor that is mounted on the power supply. The microprocessor controls whether the charge is on or off and detects a full charge when the AC power cord and battery are attached to the computer. The system charges the battery using quick charge or trickle charge.
Page 20 1.10.3 Backup Battery The backup battery maintains data for AutoResume. The power source used to back up the AutoResume data is determined according to the following priority: AC power > Main battery > Backup battery The backup battery is charged by the main battery or AC power cord. Table 1-11 shows the charging time and data preservation period of the backup battery.
Page 21 The following tools are necessary for implementing the troubleshooting procedures: A 400 series Diagnostics Disk A Phillips screwdriver (2 mm) A Toshiba MS-DOS system disk(s) A 2DD or 2HD formatted work disk for floppy disk drive testing A cleaning kit for floppy disk drive troubleshooting...
Page 22: Troubleshooting Flowchart
Use the flowchart in figure 2-1 as a guide for determining which troubleshooting procedures to execute. Before going through the flowchart steps, do the following: Verify with the customer that Toshiba MS-DOS is installed on the hard disk. Non- Toshiba operating systems can cause the computer to malfunction.
Page 23 Figure 2-1 Troubleshooting flowchart (1/2) 400 Series...
Page 24 Figure 2-1 Troubleshooting flowchart (2/2) If the diagnostics program cannot detect an error, the problem may be intermittent. The Running Test program should be executed several times to isolate the problem. Check the Log Utilities function to confirm which diagnostic test detected an error(s), then perform the appropriate troubleshooting procedures as follows: If an error is detected on the system test, memory test, display test, ASYNC test, printer test, or real timer test perform the system board troubleshooting proce-...
Page 25 If an error is detected on the display test, perform the display troubleshooting procedures in section 2.8. If an error is detected on the CD-ROM test, perform the CD-ROM drive trouble- shooting procedures in section 2.9. 400 Series...
Page 26: Power Supply Troubleshooting
Power Supply Troubleshooting The 400 series power supply controls many functions and components in the 400 series. To determine if the power supply is functioning properly, start with Procedure 1 and continue with the other Procedures as instructed. The procedures described in this section are: Procedure 1: AC IN Icon Check Procedure 2:...
Page 27 Procedure 2 Battery Icon Check The Battery icon shows the battery charging status. The Battery icon, identified by a battery icon on the front of the computer, glows orange when the AC power cord is charging the 400 series battery pack. If the Battery icon glows green, the AC power cord is connected and the battery is fully charged.
Page 28 If an error message is shown on the display, perform Check 1. If there is no error message, go to Procedure 2. If the Toshiba MS-DOS is properly loaded, go to Procedure 3. Check 1 If one of the following error messages is displayed on the screen, press the F1 key as the message instructs.
Page 29 Check 2 If the following error message is displayed on the screen, press any key as the message instructs. WARNING: RESUME FAILURE. PRESS ANY KEY TO CONTINUE. This error message appears when data stored in RAM under the resume function is lost because the battery has become discharged or the system board is damaged.
Page 30 Check 3 The IRT checks the system board. When the IRT detects an error, the system stops or an error message appears. If one of the following error messages (1) through (19), (20), (27), or (28) is displayed, replace the system board. If error message (21) is displayed, go to the Keyboard Troubleshooting Proce- dures in section 2.7.
Page 31 Procedure 2 Printer Port LED Check on Boot Mode The printer port LED displays the IRT status and test status by turning lights on and off as an eight-digit binary value for boot mode. Figure 2-2 shows the printer port LED. Figure 2-2 Printer port LED To use the printer port LED follow these steps: Turn the computer's power on, then set to boot mode.
Page 32 Table 2-1 Printer port LED boot mode status (1/2) LED status Test item Message KBC initialization ROM checksum test BIOS is damaged! ..Special register initialization PIT test PIT ERROR PIT initialization — PIT function check MEMORY REFRESH ERROR TIMER CH.2 OUT ERROR CMOS check CMOS CHECKSUM ERROR CMOS BAD BATTERY ERROR...
Page 33 Table 2-1 Printer port LED boot mode status (2/2) LED status Test item Message Initialization of expansion ROM — Password check — Setup boot check *** Bad xxxx xxxx *** Check system. Then press [F1] key. Boot load — Check 1 If the following error codes are displayed, go to Procedure 5.
Page 34 Procedure 3 Printer Port LED Check on Resume Mode The printer port LED displays the IRT status and test status by turning lights on and off as an eight-digit binary value for resume mode. To use the printer port LED follow these steps: Turn the computer’s power on, then set to resume mode.
Page 35 Procedure 5 Replacement Check The system board or the sound board may be damaged. Disassemble the 400 series following the steps described in chapter 4, Replacement Procedures, and perform the following checks: Check 1. Replace the system board with a new one. Refer to chapter 4 for instructions on how to remove and replace the system board.
Page 36 FDD head cleaning is one option available in the Diagnostic Program. Detailed operation is given in chapter 3, Tests and Diagnostics. After Toshiba MS-DOS loads, run the Diagnostic Program and then clean the FDD heads using the cleaning kit. If the FDD still does not function properly after cleaning, go to Proce- dure 3.
Page 37 Diagnostic Test Program Execution Check The Floppy Disk Drive Diagnostic Test program is stored on the 400 series Diagnostics Disk. After loading Toshiba MS-DOS, run the diagnostic program. Refer to Chapter 3, Tests and Diagnostics, for more information about the diagnostics test procedures.
Page 38 Procedure 3 Connector Check and Replacement Check The 3.5-inch Floppy Disk Drive is connected to the external 3.5-inch FDD port by the FDD cable. This cable may be damaged or disconnected from the external 3.5-inch FDD port. Perform the following checks: Check 1 Make sure the FDD cable is firmly connected to the external 3.5-inch FDD port.
Page 39: Hard Disk Drive Troubleshooting
Manual for more information about how to perform the BACKUP. Procedure 1 Partition Check Insert the Toshiba MS-DOS system disk and turn on the computer. Then perform the follow- ing checks: Check 1 Type C: and press Enter. If you cannot change to drive C, go to Check 2. If you can change to drive C, go to Procedure 2.
Page 40 Non-System disk or disk error Replace and press any key Check 3 Using the Toshiba MS-DOS system disk, install a system program on the hard disk using the SYS command. If the following message appears on the display, the system program has been transferred to the HDD.
Page 41 HDD. If the following message appears on the display, the HDD is formatted. Format complete If any other error message appears on the display, refer to the Toshiba MS-DOS Manual for more information and perform Check 2. Check 2 Using the 400 series Diagnostic Disk, format the HDD with a low level format option.
Page 42 Procedure 4 Diagnostic Test Program Execution Check The HDD test program is stored in the 400 series Diagnostics Disk. Perform all of the HDD tests in the Hard Disk Drive Test. Refer to chapter 3, Tests and Diagnostics, for more infor- mation about the HDD test program.
Page 43: Keyboard Troubleshooting
Keyboard Troubleshooting To determine if the 400 series keyboard is functioning properly, perform the following proce- dures. Start with Procedure 1 and continue with the other procedures as instructed. Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector and Replacement Check Procedure 1 Diagnostic Test Program Execution Check Execute the Keyboard Test in the Diagnostic Program.
Page 44 The Display Test program is stored on the 400 series Diagnostic Disk. This program checks the display controller on the system board. After loading Toshiba MS-DOS, run the Diagnos- tic Program. Refer to chapter 3, Tests and Diagnostics, for details.
Page 45 (400CDT) cables as shown below. Any of these cables may be disconnected. Disassemble the display unit and check the following cable connections. Refer to chapter 4. Replacement Procedures, for more information about how to disassemble the computer. Figure 2-3 400CS display connection 2-25 400 Series...
Page 46 Figure 2-4 400CDT display connection If any of these cables is not connected, firmly reconnect it and repeat Procedures 1 and 2. If the problem still exists, perform Procedure 5. 2-26 400 Series...
Page 47 Procedure 5 Replacement Check The FL, FL inverter board, LCD module, and system board are connected to the display circuits. Any of these components may be damaged. Refer to chapter 4, Replacement Proce- dures, for instructions on how to disassemble the computer and then perform the following checks: If the FL does not light, perform Check 1.
Page 48 After Toshiba MS-DOS loads, run the diagnostic program stored on the test program dis- kette. Insert a test CD (Toshiba-EMI Test Disc TDY-03) into the CD-ROM drive and run the test. Refer to Chapter 3, Tests and Diagnostics, for more information about the diagnos- tics test procedures.
Page 49 Procedure 3 Connector Check and Replacement Check The CD-ROM drive is connected to the system board and sound board by the CD-ROM drive cable. This cable may be disconnected from the system board or damaged. Disassemble the 400 series following the steps described in Chapter 4, Replacement Procedures, and perform the following checks: Check 1 Make sure the CD-ROM is firmly connected to the system board.
Page 50: The Diagnostic Test
4. Go to drive C and at the DOS prompt C:\>, type TDIAGS. MS-DOS loads the diagnostic test and displays the following screen: TOSHIBA personal computer xxxx DIAGNOSTICS version x.xx (c) copyright TOSHIBA Corp. 19xx Test the DIAGNOSTICS (Y/N) 5. To execute the program type Y; to exit, type N.
Page 51 The DIAGNOSTIC TEST MENU contains the following 13 functional tests: SYSTEM TEST MEMORY TEST KEYBOARD TEST DISPLAY TEST FLOPPY DISK TEST PRINTER TEST ASYNC TEST HARD DISK TEST REAL TIMER TEST NDP TEST EXPANSION TEST SOUND TEST CD-ROM TEST You will need the following equipment to perform some of the 400 series Diagnostic test programs.
Page 52 Executing the Diagnostic Test Toshiba MS-DOS is required to run the DIAGNOSTICS PROGRAM. To start the DIAG- NOSTIC PROGRAM follow these steps: Insert the Diagnostics disk in the computer’s floppy disk drive and turn on the computer. At the system prompt, change to drive A and type the test command or CDROMDRV (CD-ROM test only), then press Enter.
Page 53 1, and press Enter. The following DIAGNOSTIC TEST MENU will appear: TOSHIBA personal computer xxx DIAGNOSTICS version X.XX (c) copyright TOSHIBA Corp. 19XX DIAGNOSTIC TEST MENU : 1 - SYSTEM TEST 2 - MEMORY TEST...
Page 54 Select the desired subtest number from the subtest menu and press Enter. The following message will appear: TEST LOOP : YES Selecting YES increases the pass counter by one each time the test cycle ends, then restarts the test cycle. Selecting NO returns the subtest menu to the main menu after the test is complete.
Page 55: Subtest Names
Subtest Names Table 3-1 lists the subtest names for each test program in the DIAGNOSTIC TEST MENU. Table 3-1 Subtest names (1/2) Test name Subtest No. Subtest item SYSTEM ROM checksum Fan ON/OFF Thermistor check MEMORY Constant data Address pattern data Refresh Protected mode Memory module...
Page 56 Table 3-1 Subtest names (2/2) Test name Subtest No. Subtest item ASYNC Wraparound (board) Board (#1) <=> board (#2) Point to point (send) Point to point (receive) Interrupt test Infra_red Wrap_around test Infra_red Transmit mode Infra_red Receive mode Sequential read Address uniqueness Random address/data Cross talk &...
Page 57: System Test
System Test To execute the System Test select 1 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions displayed on the screen. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 ROM checksum The ROM checksum tests the system board from address F0000h to FFFFFh (64KB).
Page 58: Memory Test
Memory Test To execute the Memory Test, select 2 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions displayed on the screen. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 Constant data (real mode) This subtest writes a 256-byte unit of constant data to conventional memory (0 to 640 KB).
Page 59 Subtest 05 Memory module NOTE: To execute this subtest, an optional memory card must be installed in the computer. This subtest functions the same as subtest 04, except it is used for testing an optional memory card. Memory module capacity is 8 MB, 16 MB, and 32 After selecting subtest 05, the following message will appear: Extended memory size (2:8 MB,3:16 MB,4:32 MB)? Select the number that corresponds to the memory card installed in the 400...
Page 60: Keyboard Test
Keyboard Test To execute the Keyboard Test, select 3 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions displayed on the screen. The Keyboard test contains four subtests that test the 400 series keyboard actions. Move the highlight bar to the subtest you want to execute and press Enter.
Page 61 Subtest 02 Pressed key code display When a key is pressed, the scan code, character code, and keytop name are displayed on the screen in the format shown below. The Ins, Caps Lock, Num Lock, Scroll Lock, Alt, Ctrl, Left Shift, and Right Shift keys are displayed in reverse screen mode when pressed.
Page 62 Subtest 04 Pointing Stick This subtest checks the functions of the pointing stick as shown below. a) IPS stick pressure sensing direction and parameter. b) IPS switch function check. This test reports the pointing stick motion response from the IPS and IPS switch by displaying the location parameters.
Page 63: Display Test
The Display test contains ten subtests (for the 400CS, plus one more for the 400CDT) that test the 400 series display in various modes. Move the highlight bar to the subtest you want to execute and press Enter.
Page 64 After pressing Enter, 16 colors or 16 gray scales of mode 13h appear in the 320x200 graphics mode as shown below: BLACK BLUE GREEN CYAN MAGENTA BROWN WHITE GRAY LIGHT BLUE LIGHT GREEN LIGHT CYAN LIGHT RED LIGHT MAGENTA YELLOW INTENSE WHITE Pressing Enter toggles between the two tests.
Page 65 Subtest 04 80x25/30 Character Display (mode 3, 12) In this subtest, the character string is displayed shifting one character to the right, line by line in the 80x25 and 80x30 character modes as shown below. Pressing Enter toggles between tests. To exit this subtest and return to the DISPLAY TEST menu, press Ctrl + Break.
Page 66 Subtest 06 640x200 Graphics Display (mode 6, E) This subtest displays even dots, odd dots, and all dots in the 640x200 dot graphics mode 6 and E as shown below: To exit this subtest and return to the DISPLAY TEST menu, press Ctrl + Break.
Page 67 Subtest 08 Display Page This subtest confirms that the pages can be changed in order from page 0 through page 7 in 40*25 character mode. DISPLAY PAGE 0 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 Pressing Ctrl + Break exits this subtest, after completion of the test, and returns to the DISPLAY TEST menu.
Page 68 Subtest 10 LED/DAC Pallet This subtest checks the LED indicator (Caps Lock, Overlay and Num Lock) by key operation. [ Caps/Num/Overlay LED test ] (1) Press [ Caps Lock ] key !...Caps (on/off) (2) Press [ Fn + Num Lock] key !...Num (on/off) (3) Press [ Fn ] key !...Overlay(on/off) PRESS [Enter] KEY...
Page 69: Floppy Disk Test
Floppy Disk Test NOTE: Before running the floppy disk test, prepare a formatted work disk. Remove the Diagnostics Disk and insert a work disk into the FDD. The contents of the floppy disk will be erased. To execute the Floppy Disk Test, select 5 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions displayed on the screen.
Page 70 Subtest 01 Sequential Read This subtest performs a Cyclic Redundancy Check (CRC), that continuously reads all the tracks on a floppy disk. The following tracks are read according to the media type in the floppy disk drive: Double-sided, double-density (2D): Tracks 0 to 39. Double-sided, double-density, double-track (2DD) and double-sided, high-density, double-track (2HD): Tracks 0 to 79.
Page 71: Printer Test
Printer Test To execute the Printer Test, select 6 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions displayed on the screen. The Printer Test contains three subtests that test the output of the printer connected to the 400 series. The following messages will appear after selecting the Printer Test from the DIAGNOSTIC TEST MENU.
Page 72 Subtest 02 Function This subtest is for IBM compatible printers, and tests the following functions: Normal print Double width print Compressed print Emphasized print Double strike print All characters print This subtest prints the various print types shown below: PRINTER TEST THIS LINE SHOWS NORMAL PRINT.
Page 73: Async Test
3.10 Async Test To execute the Async Test, select 7 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions displayed on the screen. The async test contains eight subtests that test the 400 series asynchronous communication functions. Move the highlight bar to the subtest you want to execute and press Enter.
Page 74 Subtest 03 Point to point (Send) NOTE: To execute this subtest, two machines must be connected with an RS-232-C direct cable. One machine should be set as “send”(subtest 03) and the other set as ‘receive’ (subtest 04). The wiring diagram for the RS-232-C direct cable is described in Appendix F.
Page 75: Hard Disk Test
This should be done with the BACKUP command in the Toshiba Companion Utility. Do not use the MS-DOS BACKUP command. After the hard disk test is completed, execute the Toshiba MS-DOS FDISK command, which will set the partition. Next, execute the Toshiba MS-DOS FORMAT command.
Page 76: Table Of Contents
The Hard Disk Test message will appear after you respond to the Detail Status prompt. Select the number of the subtest you want to execute and press Enter. The following message will appear during each subtest. HARD DISK TEST XXXXXXX SUB-TEST : XX PASS COUNT: XXXXX ERROR COUNT: XXXXX...
Page 77 Subtest 04 Cross Talk & Peak Shift This subtest writes eight types of worst pattern data (shown below) to a cylinder, then reads the data while moving from cylinder to cylinder. Worst pattern data Cylinder ‘B5ADAD’ 0 cylinder ‘4A5252’ 1 cylinder ‘EB6DB6’...
Page 78: Real Timer Test
3.12 Real Timer Test To execute the Real Timer Test, select 9 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions on the screen. The real timer test contains three subtests that test the 400 series real timer functions. Move the highlight bar to the subtest you want to execute and press Enter.
Page 79 Subtest 03 Real Time Carry CAUTION: When this subtest is executed, the current date and time are erased. This subtest checks the real time clock increments, making sure the date and time are displayed in the following format: Current date : 12-31-1994 Current time : 23:59:58 Pressing Enter displays the following: Current date : 01-01-1995...
Page 80: Ndp Test
3.13 NDP Test To execute the NDP test, select 10 from the DIAGNOSTICS TEST MENU, press Enter and follow the directions on the screen. The NDP test contains one subtest that tests the 400 series NDP functions. Subtest 01 This test checks the following functions of NDP: Control word Status word Addition...
Page 81: Expansion Test
3.14 Expansion Test NOTE: To execute this subtest, the PCMCIA wraparound connector is required. Subtest 01 PCMCIA wraparound (Internal) This test checks the following signal line of the PCMCIA slot: Address line REG#, CE#1, CE#2 line Data line Speaker line Wait line BSY#, BVD1 line This subtest is executed in the following order:...
Page 82: Sound Test
3.15 Sound Test To execute the Sound test, select 12 from the DIAGNOSTICS TEST MENU, press Enter and follow the directions on the screen. The Sound test contains six subtests that test the 400 series Sound functions. Subtest 01 CODEC (REC/PLAY) NOTE: To execute this subtest, the internal microphone and internal headphone (or internal speaker) are required.
Page 83 Subtest 06 Codec line in/out (record sound/replay) Load the file ESS688L.COM. Connect a sound source such as a CD player or stereo to the line-in port. Next, connect an output device such as an amplifier for the internal speaker or a radio/cassette player to the line-out port. After making the connections, a dialogue box will be displayed.
Page 84 First make sure the CD-ROM driver (CDROMDRV.COM) is installed and insert the test media CD (Toshiba-EMI Test Disk TDY-03). To execute the CD-ROM test, select 13 from the DIAGNOSTICS TEST MENU, press Enter and follow the directions on the screen. The CD-ROM test contains four subtests that test the 400 series CD-ROM functions.
Page 85: Error Code And Error Status Names
3.17 Error Code and Error Status Names Table 3-2 lists the error codes and error status names for the Diagnostic Test. Table 3-2 Error codes and error status names (1/3) Device name Error code Error status name (COMMON) Data Compare Error SYSTEM ROM Checksum Error Memory...
Page 86 Table 3-2 Error codes and error status names (2/3) Device name Error code Error status name ASYNC (cont.) Framing Error Overrun Error Line Status Error Modem Status Error Bad Command Error Address Mark Not Found Record Not Found HDC Not Reset Error Drive Not Initialized HDC Overrun (DRQ) DMA Boundary Error...
Page 87 Table 3-2 Error codes and error status names (3/3) Device name Error code Error status name CD-ROM BAD COMMAND ILLEGAL LENGTH UNIT ATTENTION MEDIA CHANGE REQUEST MEDIA DETECTED ADDITIONAL SENSE BOUNDARY ERROR CORRECTED DATA ERROR DRIVE NOT READY SEEK ERROR TIME OUT RESET ERROR ADDRESS ERROR...
Page 88: Hard Disk Test Detail Status
3.18 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.
Page 89 Table 3-4 Error register contents Name Description BBK1 “0” Other (Bad block “1” A bad block mark is detected. mark) “0” There is no uncorrectable data error. (Uncorrectable) “1” Uncorrectable data error has been detected. —— Not used IDNF “0” Other (Identification) “1”...
Page 90: Hard Disk Format
NOTE: The contents of the hard disk will be erased when this program is executed. Before executing the function, transfer the contents of the hard disk onto a floppy disk(s). This can be done with the BACKUP in the Toshiba Companion Utility. See the Toshiba MS-DOS manual for details.
Page 91 NOTE: After the HDD has been formatted, execute the Toshiba MS-DOS FDISK command, to partition the HDD. Next, execute the Toshiba MS-DOS FORMAT com- mand. Refer to the Toshiba MS-DOS manual for more information about using these commands. Selecting TEST 2 and pressing Enter in the DIAGNOSTIC MENU displays the following messages: DIAGNOSTICS - HARD DISK FORMAT : VX.XX...
Page 92 The following selections also appear at the bottom of the screen in succession: 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, 1 ~ 8 and press Enter. Pressing only Enter selects 1.
Page 93 Track verification A check is made of all tracks and if an ECC error, ECC-correctable-data error, or record-not-found error is detected at a track, that track is automati- cally formatted as a bad track. Good track FORMAT If a good track has been erroneously formatted as a bad track, you can use this sub test to reformat the track as a good track.
Page 94: Head Cleaning
3.20 Head Cleaning 3.20.1 Function Description This function cleans the heads in the FDD by executing a series of head load/seek and read operations. A cleaning kit is necessary to perform this program. 3.20.2 Operations Selecting test 4 from the DIAGNOSTIC MENU and pressing Enter displays the following messages: DIAGNOSTICS - FLOPPY DISK HEAD CLEANING : VX.XX Mount cleaning disk(s) on drive(s).
Page 95: Sub-Test
3.21 Log Utilities 3.21.1 Function Description This function logs error information generated while a test is in progress and stores the results in RAM. This function can store data on a floppy disk or output the data to a printer. If the power switch is turned off, the error information will be lost.
Page 96 The error information displayed on the screen can be manipulated by the following number keys: The 1 key scrolls the display to the next page. The 2 key scrolls the display to the previous page. The 3 key returns to the Diagnostic Menu. The 4 key erases all error log information in RAM.
Page 97: Running Test
3.22 Running Test 3.22.1 Function Description This function automatically executes the following tests in sequence: System test (subtest number 01) Memory test (subtest number 01, 02, 04, 06) Display test (subtest number 01 to 08) FDD test (subtest number 02) HDD test (subtest number 01, 05) Real timer test (subtest number 02) Printer test (subtest number 03)
Page 98 Select Yes or No and press Enter. The following message will appear : Mount the work disk(s) on the drive(s), then press [Enter] key. [Warning : The contents of the disk(s), will be destroyed.] This program is executed continuously. To terminate the program, press Ctrl + Break.
Page 99: Floppy Disk Drive Utilities
FDD and HDD. FORMAT NOTE: This program is only for testing a floppy disk drive. The option is different from the Toshiba MS-DOS FORMAT command. This program can format a 5.25-inch or 3.5-inch floppy disk in the following formats: 2D: Double-sided, double-density, 48/67.5 TPI, MFM mode, 512 bytes, 9 sectors/track.
Page 100 FORMAT program Selecting FORMAT displays the following message: DIAGNOSTICS - FLOPPY DISK FORMAT : VX.XX Drive number select (1:A, 2:B) ? Select a drive number to display the following message: 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: Warning : Disk data will be destroyed.
Page 101 Remove the Diagnostics Disk from the FDD, insert the source disk, and press any key. The following message will appear, indicating the program has started. [ FDD TYPE ] : TRACK = XXX [ FDD TYPE ] : HEAD [ FDD TYPE ] : SECTOR = XX Copy start [[ track,head XXX X ]]...
Page 102: Series
3.24 System Configuration 3.24.1 Function Description The System Configuration program contains the following configuration information for the 400 series: BIOS ROM version Boot ROM version KBC version Base memory size The number of floppy disk drives The number of ASYNC ports The number of hard disk drives The number of printer ports Extended Memory Size...
Page 103 3.25 SETUP 3.25.1 Function Description This program displays the current system setup information as listed below: Memory Total Base Extended Memory Shadow BIOS ROM Display Display Adapter LCD Display Mode VGA Segment Address LCD Display Colors Power On Display Text Mode Stretch Hard Disk HDD Mode Password...
Page 104: Accessing The Setup Program
NOTE: 1. The Panel Power On/Off item appears only when the computer is in Resume mode. 2. The 400CS LCD Display Colors options are 222k and 4096 colors. Moving Within the SETUP Menu and Changing Values Press ← and → to move between the two columns. Press ↑ and ↓ to move be- tween items in a column.
Page 105 If the changed item requires the system to reboot, the following message is dis- played: Are you sure? (Y/N) The changes you made will cause the system to reboot. To make other changes, press N. Repeat the steps above. To accept the changes, press Y. NOTE: You can press Esc to quit at any time without saving changes.
Page 106 Extended This field displays the amount of extended memory the computer has avail- able. Shadow BIOS ROM This field displays 192 KB of RAM, which is reserved for the Shadow BIOS ROM. Display This group of options helps you configure the computer’s display. Display Adaptor This field displays the internal controller for the VGA internal display.
Page 107 LCD mode is set to Color. 400CDT TFT display: 16M colors Displays up to 16,777,216 colors simultaneously. (This value cannot be changed.) 400CS STN display: 222K colors Displays 256 colors out of 226,981 colors. 4096 colors Displays 256 colors out of 4096 colors.
Page 108 Text Mode Stretch Text mode stretch enables a larger display area of 680x480 pixels in text mode. Disabling this function reduces the resolution to the standard 640x400 pixels. Enabled Enables the text mode stretch feature. (Default) Disabled Disables the text mode stretch feature. Hard Disk Use this item to select the hard disk mode.
Page 109 I/O ports This option controls settings for serial and parallel ports and the sound system. Serial Port This option allows you to set the COM level, COM1 or COM2, for the serial port and PCMCIA slot. The serial port interrupt request level (IRQ) and I/O port base address for each COM level is shown below: COM level Interrupt level I/O address...
Page 110 Parallel Port This option sets the address for the parallel port. The options are: LPT1 (378H) Sets the address to 378H. (Default) LPT2 (278H) Sets the address to 278H. LPT3 (3BCH) Sets the address to 3BCH. Not used Disables the port. When you select one of the above options, except for Not used, a subwindow similar to the one below appears so you can set the parallel port mode.
Page 111 I/O address Use this option to set the I/O address from among the following settings: 0220h (default), 0230h, 0240, 0250h Interrupt level This option sets the interrupt level for the sound system. The available settings are: IRQ5, IRQ7, IRQ9, IRQ10 (default) NOTE: Sound Blaster compatible software uses IRQ7 as the default.
Page 112 BATTERY SAVE OPTION. Full Power The following shows full power settings. COM/PCMCIA/PRT Processing Speed High CPU Sleep Mode Disabled Display Auto Off Disabled (400CS) 30 Min. (400CDT) HDD Auto Off Disabled System Auto Off Disabled LCD Brightness Bright Cooling method...
Page 113 User Setting This option allows you to set the battery save param- eters on the sub-window, BATTERY SAVE OP- TIONS. When you select this option, the automatic setting feature (Full Power or Low Power) is disabled and the user-preferred parameters become effective. The default setting in the sub-windows depends on the Battery Save Mode: Low Power (Long Life) or Full Power (Normal Life).
Page 114 HDD Auto Off Use this option to disable or set the duration of the HDD automatic power off function. Disabled Disables HDD automatic power off. xx Min. Automatically turns off power to the hard disk drive if it is not used for the duration set. The duration xx can be set to 1, 3, 5, 10, 15, 20, or 30 minutes.
Page 115 Alarm Volume This option disables or sets the volume level of the alarm. Setting this option to off disables the computer’s sound function for alarms. This option can also be set by hotkeys. Disables the alarm. Sets the alarm volume to low. Medium Sets the alarm volume to medium.
Page 116 Alarm Power On This option lets you set the time for the system to turn on automatically. For example, if you are expecting to receive a modem transmission at a time when you are away or asleep, you can set this option to the time of the transmission.
Page 117 Ext. Keyboard Fn key equivalent Use this option to set a key combination on an external keyboard to emulate the Fn key on the computer’s internal keyboard. Setting an Fn key equiva- lent will enable you to use “Hotkeys” by pressing the set combination in place of the Fn key.
Page 118 General This section explains how to disassemble the computer and replace Field Replaceable Units (FRUs). It may not be necessary to remove all the FRUs in order to replace one. The chart below is a guide to which FRUs need to be removed in order to remove others. Always start by removing the battery pack, then follow the lines on the chart to determine which FRU you must remove next in order to repair the one you think is causing the computer to operate improperly.
Page 119 DANGER: 1. Always use the lithium ion battery pack or back-up battery that areauthorized by Toshiba or compatible with the unit. Since other battery packs have different specifications, they may be incompatible with the unit, and may burst or explode.
Page 120 Before You Begin Look over the procedures in this section before you begin disassembling the computer. Fa- miliarize yourself with the disassembly and reassembly steps. Begin each procedure by removing the AC power cord and the battery pack as instructed in section 4.2, The Battery Pack: Do not disassemble the Computer unless it is operating abnormally.
Page 121 Disassembly Procedures The computer has two basic types of cable connectors: Pressure Plate Connectors Normal Pin Connectors To disconnect a Pressure Plate connector, lift up the tabs on either side of the connector’s plastic pressure plate and slide the cable out of the connector. To connect the cable to a Pressure Plate connector, make sure the pressure plate is fully lifted and slide the cable into the connector.
Page 122 Tools and Equipment The use of ElectroStatic Discharge (ESD) equipment is very important for your safety and the safety of those around you. Proper use of these devices will increase the success rate of your repairs and lower the cost for damaged or destroyed parts. The following equipment is necessary to disassemble and reassemble the computer: One M2 Phillips screwdriver to remove and replace screws.
Page 123: The Battery Pack
Press the battery latch out slightly so you can lift out the battery pack. Figure 4-2 Removing the battery pack NOTE: For environmental reasons, do not throw away a spent battery pack. Please return spent battery packs to your Toshiba dealer. 400 Series...
Page 124 WARNING: The battery is a lithium ion battery and should be replaced only by your dealer or by a Toshiba service representative. The battery can explode if not properly replaced, used, handled, or disposed of. Dispose of the battery as required by local ordinances or regulations.
Page 125 Optional PCMCIA Card Removing an Optional PCMCIA card To remove an optional PCMCIA card, make sure the computer is in boot mode then follow the steps below. Refer to figure 4-4. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer.
Page 126 Installing an Optional PCMCIA Card To install an optional PCMCIA card, follow the steps below. NOTE: Before you install the PCMCIA card, make sure the computer is in boot mode. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer.
Page 127: Optional Memory Module
Optional Memory Module Removing an Optional Memory Module To remove an optional memory module, make sure the computer is in boot mode then follow the steps below and refer to figures 4-6 and 4-7. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer.
Page 128 Installing an Optional Memory Module To install an optional memory module, make sure the computer is in boot mode then follow the steps below and refer to figure 4-8. Position the connector on the bottom of the module over the corresponding connector on the computer (align the holes on the side of the module over the screw holes on the brace).
Page 129: Diskette Drive
Diskette Drive Removing the Diskette Drive To remove the internal diskette drive, follow the steps below and refer to figures 4-9 to 4-12. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer. Remove the battery pack, optional PCMCIA card, and optional memory module as described in sections 4.2, 4.3, and 4.4.
Page 130 Remove two M2x6 screws and four M2x3 screws and take off the upper plastic cover. Use a thin object to release two latches on either side of the diskette drive in the numbered order. Figure 4-10 Removing the upper plastic cover Lift off the plate and remove the lower plastic cover.
Page 131 Disconnect the flexible cable. Remove four M2x3 screws and remove the diskette drive from the bracket. Figure 4-12 Removing the diskette drive Installing the Diskette Drive To install the diskette drive, follow the steps below and refer to figures 4-9 to 4-12. Seat the diskette drive in the metal bracket and secure four M2x3 screws.
Page 132 CD-ROM Drive Removing the CD-ROM Drive To remove the internal CD-ROM drive, follow the steps below and refer to figures 4-13 to 4-15. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer. Remove the battery pack, optional PCMCIA card, and optional memory module as described in sections 4.2, 4.3, and 4.4.
Page 133 Remove four M2x3 screws and two M2.5x6 screws securing the frame to the CD-ROM drive. Use a thin object to release two latches on either side in the numbered order. Figure 4-14 Removing the frame Slide the drive partially out of the case. Remove the cover and disconnect the cable connector.
Page 134 Installing the CD-ROM Drive Seat the cover and connect the cable connector. Push the CD-ROM drive fully into the case. Secure the frame to the drive with four M2x3 screws and two M2.5x6 screws. Insert the drive in the computer and press firmly until it is flush with the computer. The release lever will close partially.
Page 135: Hard Disk Drive
Hard Disk Drive Removing the Hard Disk Drive To remove the hard disk drive, follow the steps below and refer to figures 4-16 and 4-17. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer. Remove the battery pack, optional PCMCIA card, optional memory module, and diskette drive or CD ROM drive as described in sections 4.2, 4.3, 4.4, and 4.5 or 4.6.
Page 136 Remove the metal cover. Remove four flat-head M3x4 screws securing the frame to the HDD and separate the HDD from the frame. Figure 4-17 Removing the HDD from the frame Installing the Hard Disk Drive To install the hard disk drive, follow the steps below and refer to figures 4-16 and 4-17. Secure the frame to the HDD with four flat-head M3x4 screws.
Page 137 Keyboard Removing the Keyboard To remove the keyboard, follow the steps below and refer to figures 4-18 and 4-19. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer. Remove the battery pack, optional PCMCIA card, optional memory module, diskette drive or CD ROM drive, and HDD as described in sections 4.2 through 4.7.
Page 138 Lift out the keyboard and disconnect the keyboard cable from the connector (PJ13) on the system board. Figure 4-19 Removing the keyboard Installing the Keyboard To install the keyboard, follow the steps below and refer to figures 4-18 and 4-19. Seat the keyboard.
Page 139 Sub-battery and VGA Board Removing the Sub-battery and VGA Board To remove the sub-battery and VGA board, follow the steps below and refer to figures 4-20 to 4-23. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer.
Page 140 Disconnect the VGA board connector from the system board connector PJ16. Figure 4-22 Removing the VGA board Rotate the board out and disconnect the VGA cables from PJ302 (the 400CS uses this connector only) and PJ303 on the VGA board.
Page 141 To install the sub-battery and VGA board, follow the steps below and refer to figures 4-20 to 4-23. Connect the VGA cables to PJ302 (the 400CS uses this connector only) and PJ303 on the VGA board. Rotate the board into place and press to connect the VGA board connector to PJ16 on the system board.
Page 142 4.10 Top Cover and Display Assembly Removing the Top Cover and Display Assembly To remove the top cover and display assembly, follow the steps below and refer to figures 4-24 to 4-26. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer.
Page 143 PJ3 on the sound card) and remove the battery. WARNING: If you replace the RTC battery, be sure to use only batteries recommended by Toshiba. Installation of the wrong battery can cause the battery to explode or otherwise cause damage.
Page 144 Remove one M2.5x8 screw from the sub-battery base. Unlatch six latches securing the top cover and remove the top cover and display assembly. Installing the Top Cover and Display Assembly To install the top cover, follow the steps below and refer to figures 4-24 to 4-26. Seat the top cover and display assembly.
Page 145 4.11 Sound Card and AccuPoint Button Contacts Removing the Sound Card and AccuPoint Button Contacts To remove the sound card and AccuPoint button contacts, follow the steps below and refer to figures 4-27 and 4-28. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer.
Page 146 Remove the tape and disconnect the AccuPoint button contact cable from PJ10 on the sound card. Figure 4-28 Removing the AccuPoint button contact Remove the AccuPoint button contacts. Installing the Sound Card and AccuPoint Button Contacts To install the sound card, follow the steps below and refer to figures 4-27 and 4-28. Seat the AccuPoint button contacts.
Page 147 4.12 AC PS Unit Removing the AC PS Unit To remove the AC PS unit, follow the steps below and refer to figures 4-27 and 4-29. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer. Remove the battery pack, optional PCMCIA card, optional memory module, diskette drive or CD ROM drive, HDD, keyboard, sub-battery and VGA board, top cover and display assembly, sound card and AccuPoint button contacts as...
Page 148 Installing the AC PS Unit To install the AC PS unit, follow the steps below and refer to figure 4-29. Seat the power cord socket and AC PS unit. Install the AC PS unit’s plastic base. Secure the AC PS unit with two M2.5x6 screws (one underneath) and one M2.5x10 screw.
Page 149: Infrared Board
4.13 Infrared Board Removing the Infrared Board To remove the infrared board, follow the steps below and refer to figure 4-30. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer. Remove the battery pack, optional PCMCIA card, optional memory module, diskette drive or CD ROM drive, HDD, keyboard, sub-battery and VGA board, top cover and display assembly, sound card and AccuPoint button contacts and AC PS unit as described in sections 4.2 through 4.12.
Page 150 Installing the Infrared Board To install the infrared board, follow the steps below and refer to figure 4-30. Seat the infrared board and slide it into the notch on the computer. Secure the board with one M2.5x4 screw. Connect the infrared board cable to PJ101. Install the AC PS unit, sound card and AccuPoint button contacts, top cover and display assembly, sub-battery and VGA board, keyboard, HDD, diskette drive or CD-ROM drive, optional memory module, optional PCMCIA card, and battery...
Page 151 4.14 Speaker Removing the Speaker To remove the speaker, follow the steps below and refer to figures 4-31 and 4-32. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer. Remove the battery pack, optional PCMCIA card, optional memory module, diskette drive or CD ROM drive, HDD, keyboard, sub-battery and VGA board, top cover and display assembly, sound card and AccuPoint button contacts, AC PS unit and infrared board as described in sections 4.2 through 4.13.
Page 152 Remove one M2.5x4 screw securing the speaker and its brace. Figure 4-32 Removing the speaker Installing the Speaker To install the speaker, follow the steps below and refer to figures 4-31 to 4-32. Seat the speaker in the speaker brace and secure it with one M2.5x4 screw. Secure the speaker and speaker brace to the computer with one M2.5x6 screw (figure 4-31).
Page 153 4.15 System Board and Fan Removing the System Board and Fan To remove the system board and fan, follow the steps below and refer to figures 4-33 and 4-34. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer.
Page 154 Disconnect the fan cable from PJ11 and remove two M2.5x6 screws. Figure 4-34 Removing the fan Installing the System Board and Fan To install the system board, follow the steps below and refer to figures 4-33 and 4-34. Seat the fan in the system board and secure it with two M2.5x6 screws. Connect the fan cable to PJ11 (figure 4-34).
Page 155: Display Mask
4.16 Display Mask Removing the Display Mask To remove the display mask, follow the steps below and refer to figure 4-35. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer. Remove the battery pack, optional PCMCIA card, and optional memory module as described in sections 4.2 through 4.4.
Page 156 Installing the Display Mask To install the display mask, follow the steps below and refer to figure 4-35. Set the display mask in place and secure the latches, beginning with the display supports. Continue along the bottom of the display (three latches), along the sides (four latches), and across the top (six latches).
Page 157 4.17 400CS FL Inverter Board Removing the 400CS FL Inverter Board To remove the 400CS FL inverter board, follow the steps below and refer to figure 4-36. Turn the computer's power off. Disconnect the AC power cable and all external cables connected to the 400CS.
Page 158 Installing the 400CS FL Inverter Board To install the 400CS FL inverter board, follow the steps below and refer to figure 4-36. Seat the FL inverter board. Connect the FL inverter cable to CN1 and the FL cable to CN2 on the FL inverter board.
Page 159 4.18 400CDT FL Inverter Board Removing the 400CDT FL Inverter Board To remove the 400CDT FL inverter board, follow the steps below and refer to figure 4-37. Turn the computer's power off. Disconnect the AC power cable and all external cables connected to the 400CDT.
Page 160 4.19 400 Liquid Crystal Display (LCD) Module Removing the 400 Color LCD Module To remove the 400CS/CDT color LCD module, follow the steps below and refer to figure 4-38. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer.
Page 161 Installing the 400 Color LCD Module To install the 400CS/CDT LCD module, follow the steps below and refer to figure 4-38. Connect the display cable to CN11 on the LCD module, and carefully rotate the LCD module into the LCD cover.
Page 162 Removing the 400CS FL To remove the 400CS FL, follow the steps below. Refer to figures 4-39 through 4-42. Turn off the power to the 400CS. Disconnect the AC power cable, and all exter- nal cables connected to the 400CS.
Page 163 Remove four M2x4 screws securing the SEG board. Remove the black protec- tive tape and rotate the board out so that it lies flat. Be sure no dust or debris contaminates the unit. Figure 4-40 Removing SEG board screws Slip your finger under the P chassis and release the latch securing it to the B/L holder.
Page 164 Figure 4-42 Lifting the end of the reflector sheet Installing the 400CS FL To install the 400CS FL unit, follow the steps below and refer to figures 4-39 to 4-42. Seat the FL, gently press it securely in place and cover it with the end of the reflector sheet.
Page 165 4.21 400CDT FL Removing the 400CDT FL To remove the 400CDT FL, follow the steps below and refer to figures 4-43 and 4-44. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer. Remove the battery pack, optional memory module, optional PCMCIA card, display mask, FL inverter board and as described in sections 4.2, 4.3, 4.4, 4.16, and 4.18.
Page 166 Lift out the FL with its cables. Figure 4-44 Removing the 400CDT FL Installing the 400CDT FL To install the 400CDT FL, follow the steps below and refer to figures 4-43 and 4-44. Route the FL cable into its groove and seat the FL. Replace the metal cover and secure it with one M2x2 and two M2x3 screws.
Page 167 4.22 Microphone Removing the Microphone To remove the microphone, follow the steps below and refer to figure 4-45. Turn the computer's power off. Disconnect the AC power cord and all external cables connected to the computer. Remove the battery pack, optional memory module, optional PCMCIA card, keyboard, top cover and display assembly, display mask, FL inverter board, LCD module and FL as described in sections 4.2, 4.3, 4.4, 4.8, 4.10, and 4.16 through 4.21.
Page 168: Appendix A Handling The Lcd Module
Appendix A Handling the LCD Module Precautions for Handling the LCD Module The computer’s LCD module can be easily damaged during assembly or disassembly. Therefore, please observe the following precautions when handling the LCD module. When installing the LCD module in the LCD cover, be sure to seat it so that it is properly aligned and maximum visibility of the display is maintained.
Page 169 If the panel’s surface gets dirty, wipe it with cotton or a soft cloth. If it is still dirty, try breathing on the surface to create a light condensate and wipe it again. If the surface is very dirty, we recommend a CRT cleaning agent. Apply the agent to a cloth and then wipe the panel’s surface.
Page 170 CMOS-LSI circuits are used in the module, so guard against damage from electro- static discharge. Be sure to wear a wrist or ankle ground when handling the module. Do not expose the module to direct sunlight or strong ultraviolet rays for long periods.
Page 171 Do not disassemble the LCD module. Disassembly can cause malfunctions. If you transport the module, do not use packing material that contains epoxy resin (amine) or silicon glue (alcohol or oxime). These materials can release gas that can damage the panel's polarization. 400 Series...
Page 172 Appendix B Board Layout System Board Front View Figure B-1 Board layout (front) 400 Series...
Page 173 System Board Back View Figure B-2 Board layout (back) 400 Series...
Page 174 Table B-1 System board ICs and connectors (front) Mark Number Name SCPCNT GA SISCNT GA IC4 to IC7 System Memory IC12 IC27 I/O GA IC29 PCMCIA GA IC514 PS Micon Thermistor Connector Exp. Memory Connector PRT/RGB I/F Connector Table B-2 System board ICs and connectors (back) Mark Number Name...
Page 175: Appendix C Pin Assignments
Appendix C Pin Assignments PJ1 Thermistor Connector (3-pin) Table C-1 Thermistor connector pin assignments (3-pin) Pin No. Signal name Pin No. Signal Name ACPUTH PJ2 Expansion Memory Connector (140-pin) Table C-2 Expansion memory connector pin assignments (140-pin) Pin No. Signal name Pin No.
Page 176 Table C-2 Expansion memory connector pin assignments (140-pin) (continued) Pin No. Signal name Pin No. Signal Name HD02;100 HD06;100 HD03;100 HD05;100 HD02;100 HD06;100 HD03;100 HD07;100 HD08;100 HD12;100 HD09;100 HD13;100 HD10;100 HD14;100 HD11;100 HD15;100 HD48;100 HD52;100 HD49;100 HD53;100 HD50;100 HD54;100 HD51;100 HD55;100 HD56;100 HD60;100...
Page 177 Table C-2 Expansion memory connector pin assignments (140-pin) (continued) Pin No. Signal name Pin No. Signal Name MA00;101 MA01;101 MA02;101 MA03;101 MA04;101 MA05;101 MA07;101 MA06;101 MA09;101 MA08;101 MA11;101 MA10;101 PJ3 Ni-Mh RTC Battery Connector (3-pin) Table C-3 Ni-Mh RTC battery connector pin assignments (3-pin) Pin No.
Page 178 PJ4 PRT/RGB I/F Connector (30-pin) Table C-4 PRT/RGB I/F connector pin assignments (30-pin) Pin No. Signal name Pin No. Signal Name PD7;100 PD6;100 PD5;100 PD4;100 PD3;100 PD2;100 PD1;100 PD0;100 STROB;000 AUTFD;000 PINT;000 SLIN;000 ACK;000 BUSY;100 PE;100 SELCT;100 ERROR;000 CHSYNC;110 CVSYNC;110 CRTEN;000 CVSYNC;100 CHSYNC;100...
Page 179 Table C-5 FDD/CD-ROM connector pin assignments (80-pin) (continued) Pin No. Signal name Pin No. Signal Name SD01;100 SD15;100 SD00;100 IFAMON;000 DRQ7;100 FIOWR;000 FIORD;000 IOCRDY;100 IFRDAT;000 DACK7;000 IRQCD;100 IOCS16;000 SA01;100 IFWDAT;000 SA00;100 IFRADY;000 SA02;100 CDRCS0;000 IFDASL;000 CDRCS1;000 IFINDX;000 DSKCHG;000 CDOUTL MBSTS0;100 AGNDL CDRLED;000 CDOUTR...
Page 180 PJ6 Ext. FDD Connector (26-pin) Table C-6 Ext. FDD connector pin assignments (26-pin) Pin No. Signal name Pin No. Signal Name — IFINDX;000 — IFDASL;000 — DSKCHG;000 — IFRADY;000 IFHMED;000 IFAMON;000 IFLOWD;000 IFDIRC;000 SLFDLD;100 IFSTEP;000 — IFWDAT;000 — IFWEN;000 — IFTRKO;000 —...
Page 181 Table C-7 Sound/HDD connector pin assignments (90-pin) (continued) Pin No. Signal name Pin No. Signal Name SA06;100 SD01;100 SA02;100 SD02;100 SA07;100 SD03;100 SA01;100 SD04;100 SD05;100 SA08;100 SD06;100 SA00;100 SD07;100 SA09;100 PRDT1;000 SD15;100 PRDT2;000 SD14;100 SDMUTE;100 SD13;100 SPKVOL;100 SD12;100 BLAWR;000 SD11;100 SD10;100 RESET;000 SD09;100...
Page 182 PJ9 P-REP Connector (176-pin) Table C-9 P-REP connector pin assignments (176-pin) Pin No. Signal name Pin No. Signal Name LA23;110 LA20;110 FRESET;010 SBHE;010 MERD;010 ZEROWS;010 IOCRDY;110 BUFOFF;020 PSPTON;010 DTR1;110 TXD1;010 DCD1;100 CTS1;100 SYSCLK;100 IORD;010 IFSTEP;000 IFAMO2 IFWDAT;000 IRQ7;110 IRQ9;110 IRQ12;110 ERROR;000 PE;100 ACK;000...
Page 183 Table C-9 P-REP connector pin assignments (176-pin) Pin No. Signal name Pin No. Signal Name IRQ10;110 IRQ14;110 SELCT;100 BUSY;100 SLIN;000 AUTFD;000 PD0;100 PD2;100 PD4;100 PD6;100 PD7;100 CHSYNC;120 CVSYNC;120 P12V SA00;110 SA08;110 SA02;110 SA04;110 SA10;110 SA06;110 SA15;110 SA18;110 SA13;110 SD07;110 SA16;110 SD05;110 SD03;110 SA09;110...
Page 184 Table C-9 P-REP connector pin assignments (176-pin) Pin No. Signal name Pin No. Signal Name SD02;110 SD08;110 SD10;110 SD01;110 SD12;110 SD14;110 IFTRK0;000 SLFDLD;100 IFRDAT;000 DSKCHG;000 IFWPRO;000 IFHMED;000 PRDT1;000 EXKBDT;100 EXKBCK;100 JOYR;000 JOYW;000 HVPC LOUTLM LOURLP LINLM LINLP C.10 PJ10 Panel Sensor Connector (2-pin) Table C-10 Panel sensor connector pin assignments (2-pin) Pin No.
Page 185 C.13 PJ13 Keyboard Connector (25-pin) Table C-13 Fan connector pin assignments (25-pin) Pin No. Signal name Pin No. Signal Name KBRT6;100 KBRT2;100 KBRT5;100 KBRT0;100 KBRT1;100 KBRT3;100 KBRT7;100 KBRT4;100 KBOT02;000 KBOT09;000 KBOT11;000 KBOT03;000 KBOT04;000 KBOT05;000 KBOT06;000 KBOT07;000 KBOT08;000 KBOT01;000 KBOT00;000 IPSY;100 –...
Page 186 C.15 PJ15 PCMCIA Connector (140-pin) Table C-15 PCMCIA connector pin assignments (140-pin) Pin No. Signal name Pin No. Signal Name — — — — — — CDA2;000 SDB2;000 WPA;100 WPB;100 CDA10;100 CDB10;100 CDA02;100 CDB02;100 CDA09;100 CDB09;100 CDA01;100 CDB01;100 CDA08;100 CDB08;100 CDA00;100 CDB00;100 BVDA1;100...
Page 187 Table C-15 PCMCIA connector pin assignments (140-pin) (continued) Pin No. Signal name Pin No. Signal Name MCVCCA MCVCCB CADA21;100 CADB21;100 BSYA;000 BSYB;000 CADA20;100 CADB20;100 WEA;000 WEB;000 CADA19;100 CADB19;100 CADA14;100 CADB14;100 CADA18;100 CADB15;100 CADA13;100 CADB13;100 CADA17;100 CADB17;100 CADA08;100 CADB08;100 IOWA;000 CADB09;100 CADA09;100 CADB09;100 IORA;000...
Page 188 C.16 PJ16 VGA Connector (120-pin) Table C-16 VGA connector pin assignments (120-pin) Pin No. Signal name Pin No. Signal Name P12V BE3;000 BE2;000 ADS;000 RDYVLI;000 FLHIGH CFLPWR FLV0 RDYVLO;000 CSVLBI;000 CLKVLO;100 FLV1 WR;000 RSTVGA;000 PDNVGA;000 D23;100 CLKVGA;100 D22;100 D21;100 RESET;000 D20;100 PANEL1;100 PANEL0;100...
Page 189 Table C-16 VGA connector pin assignments (120-pin) Pin No. Signal name Pin No. Signal Name A18;100 A19;100 D12;100 A20;100 D13;100 D14;100 A03;100 D15;100 A04;100 A05;100 D04;100 A12;100 D03;100 D02;100 A13;100 D01;100 A14;100 A15;100 D00;100 A23;100 D07;100 D06;100 A24;100 D05;100 A25;100 A22;100 CHSYNC;100 A21;100...
Page 190 Appendix D Keyboard Scan/Character Codes Table D-1 Scan codes (set 1 and set 2) (1/3) Code set 1 Code set 2 Keytop Make Break Make Break Note ‘ ~ 7 & BkSp 29 (42) Caps Lock 400 Series...
Page 191 Table D-1 Scan codes (set 1 and set 2) (2/3) Code set 1 Code set 2 Keytop Make Break Make Break Note ‘ “ Enter Shift (L) No.102 key , < . > Shift (R) Ctrl Alt (L) Space ALT (R) E0 F0 11 E0 F0 70 E0 F0 71...
Page 192 Table D-1 Scan codes (set 1 and set 2) (3/3) Code set 1 Code set 2 Keytop Make Break Make Break Note PrintSc Pause — — — — Notes: Scan codes differ by mode. Scan codes differ by overlay function. Combination with Fn key makes different codes.
Page 193 Table D-2 Scan codes with left Shift key Code set 1 Code set 2 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 194 Table D-4 Scan codes with Fn key Code set 1 Code set 2 Keytop Make Break Make Break CTRL LALT ARROW NUMERIC Table D-5 Scan codes in overlay mode Code set 1 Code set 2 Keytop Make Break Make Break (•) (–) Table D-6 Scan codes with Ctrl key...
Page 195 Table D-7 Scan codes with Alt key Code set 1 Code set 2 Shift Make Make Pause Common SD C5 F0 77 Ctrl* *: This key generates only make codes. 400 Series...
Page 196 Appendix E Key Layout United States (US) Keyboard Figure E-1 US keyboard United Kingdom (UK) Keyboard Figure E-2 UK keyboard 400 Series...
Page 197 German (GR) Keyboard Figure E-3 GR keyboard French (FR) Keyboard Figure E-4 FR keyboard 400 Series...
Page 198 Spanish (SP) Keyboard Figure E-5 SP keyboard Italian (IT) Keyboard Figure E-6 IT keyboard 400 Series...
Page 199 Scandinavian (SC) Keyboard Figure E-7 SC keyboard Swiss-German (SL) Keyboard Figure E-8 SL keyboard 400 Series...
Page 200: Appendix F Wiring Diagrams
Appendix F Wiring Diagrams Printer Wraparound Connector (9) +PD7 (15) –ERROR (8) +PD6 (14) –AUTFD (7) +PD5 (13) +SELECT (6) +PD4 (16) –PINIT (5) +PD3 –STROBE (10) –ACK (4) +PD2 (12) (3) +PD1 (17) –SLIN (2) +PD0 (11) +BUSY Figure F-1 Printer wraparound connector RS-232-C Wraparound Connector (3) TD (7) RTS...
Page 201 RS-232-C Direct Cable (9-Pin to 25-Pin) (1) CD (2) RD (3) TD (4) DTR (22) (5) GND (7) RTS (6) DSR (20) (8) CTS (9) RI Figure F-4 RS-232-C direct cable (9-pin to 25-pin) 400 Series...
Page 202 Appendix G BIOS Rewrite Procedures This Appendix explains how to rewrite the system BIOS program when you update the system BIOS. Tools To rewrite the BIOS, you need the following tool: BIOS rewrite disk for 400 series Rewriting the BIOS Set the system to boot mode.

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