Page 1 Features The T1950, T1950CS and T1950CT units consist of the following features. Processor Intel SL-Enhanced 486DX2/40Mhz. (P24S chip) Processor Type DX2: (3.3v w/8KB internal cache) Co-processor embedded. BIOS 128KB flash EPROM (150ns) 4MB Expandable to 20MB (80ns) Display T1950: Fluorescent Sidelit Monochrome LCD...
Page 2 The T1950 Series Personal Computer is shown in Figure 1-1, and its system configuration is shown in Figure 1-2. Figure 1-1 T1950 Series Personal Computer Figure 1-2 T1950 Series System Unit Configuration...
Page 3: System Unit Block Diagram
System Unit Block Diagram Figure 1-3 is a block diagram of the T1950 Series system unit. Figure 1-3 T1950 Series System Board Block Diagram...
Page 4 The T1950 Series system board is composed of the following major components: An i486DX2-40 CPU Super Integration (SI) T9901, which stores the following components: • Two Direct Memory Access Controllers (DMAC): 82C37 • Two Programmable Interrupt Controllers (PIC): 82C59 • One Programmable Interval Timer (PIT): 82C54 •...
Page 5 Saving the data of the Register (in resume) Controller Toshiba Special Register • 40 MHz/20 MHz Controller • Data Bus Change Controller • Data Latch PCMCIA Controller Gate Array This gate array has the following functions: • Memory Card Controller PCMCIA IC Card Controller Toshiba Modem Card Controller...
Page 6: Inch Floppy Disk Drive
The T1950 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 T1950 Series FDD is shown in Figure 1-4, and specifications are listed in Table 1-1. Figure 1-4 3.5-inch FDD Table 1-1 3.5-inch FDD Specifications...
Page 7: Inch Hard Disk Drive
The T1950/T1950CS supports a 120 or 200 MB HDD. The T1950CT supports a 200 or 320 MB HDD. A T1950 Series HDD is shown in Figure 1-5, and specifications are listed in Table 1-2. Figure 1-5 2.5-inch HDD Table 1-2 2.5-inch HDD Specifications...
Page 8 Keyboard The 82-(USA) or 84-(European) keyboard is mounted on the T1950 Series system unit, and is connected to the keyboard controller on the system board through a 19-pin flat cable. The keyboard is shown in Figure 1-6. Figure 1-6 Keyboard...
Page 9 1.6.1 Monochrome LCD Module The T1950 monochrome LCD supports 640x480 pixels with a Video controller and 64 levels of gray. The video controller includes the functions of the Video Graphics Array (VGA). The LCD receives vertical and horizontal synchronizing signals, 8-bit data signals (4-bit upper block data signal and 4-bit lower block data signal), and shift clock for data transmission.
Page 10 1.6.2 Monochrome Fluorescent Lamp (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 listed in Table 1-4. Table 1-4 Monochrome FL Inverter Board Specifications Item Specifications Input...
Page 11 STN Color LCD (T1950CS) The STN Color Liquid Crystal Display (LCD) contains an LCD module, a Fluorescent Lamp (FL), and an FL inverter board. 1.7.1 STN Color LCD Module The T1950CS STN color LCD is backlit and supports 640x480 pixels with a Video control- ler.
Page 12 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 1-6. Table 1-6 STN Color FL Inverter Board Specifications Item Specifications Input...
Page 13 TFT Color LCD (T1950CT) The TFT Color Liquid Crystal Display (LCD) contains an LCD module, a Fluorescent Lamp (FL), and an FL inverter board. 1.8.1 TFT Color LCD Module The T1950CT TFT color LCD supports 640x480 pixels with an internal display controller and 512 colors for graphics and characters.
Page 14 1.8.2 TFT 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 1-8. Table 1-8 FL Inverter Board Specifications Item Specifications Input Voltage...
Page 15: Power Supply
Power Supply The power supply uses a microprocessor to monitor and regulate the voltages used within the T1950 Series computers. The power supply contains the following functions: Determines if the AC adapter or battery is connected to the computer. Detects DC output and circuit malfunctions.
Page 16: Battery Indicator
1.10 Batteries The T1950 Series has three types of batteries: Main battery pack Backup battery Real Time Clock (RTC) battery Specifications for these batteries are listed in Table 1-10. Table 1-10 Battery Specifications Battery name Material Output voltage Capacity Main battery...
Page 17: Battery Charging Control
Table 1-11 shows the charging time period of the main battery. Table 1-11 Time Required for Battery Charges Charging time Quick charge About 2.3 hours (T1950) (power off) About 1.4 hours (T1950CS/T1950CT) Trickle charge About 48 hours...
Page 18: Rtc Battery
Table 1-12 Backup Battery Charging/Data Preservation Time Time Charging Time Power On 16 H Power Off (with AC Adapter) 60 H Power Off (Without AC Adapter) Doesn’t charge Data preservation period (full charge) 1.10.4 RTC Battery The RTC battery provides power to keep the current date, time and other setup information in memory while the computer is turned off.
Page 19: Troubleshooting
The following tools are necessary for implementing the troubleshooting procedures: 1. T1900/T1900C Diagnostics Disk 2. Phillips head screwdriver (2 mm) 3. Toshiba MS-DOS system disk(s) 4. 2DD or 2HD formatted work disk for floppy disk drive testing 5. Cleaning kit for floppy disk drive troubleshooting 6.
Page 20: Troubleshooting Flowchart
(F31PRT), then turn the POWER switch on. The computer will override the password function by erasing the current password. 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 21 Figure 2-1 Troubleshooting Flowchart (1/2)
Page 22 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...
Page 23: Power Supply Troubleshooting
Power Supply Troubleshooting The T1900/T1900C’s power supply controls many functions and components in the computer. To determine if the power supply is functioning properly, start with Procedure 1 and continue with the other procedures as instructed. Procedures described in this section are: Procedure 1: DC IN LED Indicator Check Procedure 2:...
Page 24 Check 3 The battery pack may be malfunctioning. Replace the battery pack with a new one and turn the computer on again. If the problem still exists, perform Check 4. Check 4 Place the computer in an environment between –20°C and 70°C until the unit is at the ambient temperature.
Page 25 Procedure 3 Power Supply Replacement Check The power supply is built into the lower system board. If the power supply is damaged, the lower system board must be replaced. Refer to Chapter 4 for instructions on how to disassemble the T1900/T1900C, then perform the following check: Check 1 Replace the lower system board with a new one and restart the system.
Page 26: System Board Troubleshooting
If an error message is shown on the display, perform Check 1. If there is no error message, go to Procedure 2. If Toshiba MS-DOS 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 27 Check 2 If either of the following error messages [(a) or (b)] is displayed on the screen, press any key as the message instructs. (a) WARNING: RESUME FAILURE. PRESS ANY KEY TO CONTINUE. (b) WARNING: DATA IN HARD-RAM WAS LOST. YOU MUST FORMAT HARD-RAM BEFORE USE.
Page 28 Table 2-1 IRT Error Messages (2/2) Error Message PIC #2 ERROR KEYBOARD ERROR KBC ERROR HDC ERROR HDD #0 ERROR HDD #1 ERROR NO FDD ERROR FDD ERROR TIMER INTERRUPT ERROR RTC UPDATE ERROR If any of the following error messages is displayed, go to Procedure 5: 1 through 17, 19, 20, 25 or 26 If Error Message 18 is displayed, go to the Keyboard Troubleshooting Proce- dures in Section 2.7.
Page 29 Procedure 2 Printer Port LED Check in 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. NOTE: When performing this check, the external FDD/PRT option in the SETUP program must be set to PRT and the computer set to boot mode.
Page 30 Table 2-2 Printer Port LED Boot Mode Error Status (1/2) Error Status Test Item Message Pre-init for warm start — test PIT test TIMER CH.2 OUT ERROR PIT ERROR READ DATA = XXH WRITE DATA = XXH PIT initialization — PIT function test MEMORY REFRESH ERROR First 64KB memory test...
Page 31 Table 2-2 Printer Port LED Boot Mode Error Status (2/2) Error Status Test Item Message DMAC test DMAC #1 ERROR READ DATA = XXXXH WRITE DA = XXXXH DMAC #2 ERROR READ DATA = XXXXH WRITE DATA = XXXXH DMAC initialization PIC test PIC #1 ERROR READ DATA = XXH...
Page 32 Procedure 3 Printer Port LED Check in 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. NOTE: When performing this check, the external FDD/PRT option in the SETUP program must be set to PRT and the computer set to resume mode.
Page 33: Diagnostic Test Program Execution Check
Procedure 4 Diagnostic Test Program Execution Check Execute the following tests from the Diagnostic Test Menu. Refer to Chapter 3, Tests and Diagnostics, for more information on how to perform these tests. System Test Memory Test Printer Test ASYNC Test If an error is detected during these tests, go to Procedure 5.
Page 34: Floppy Disk Drive Troubleshooting
Chapter 3, Tests and Diagnostics. After loading Toshiba MS-DOS, run the Diagnostics Program, then clean the FDD heads using the cleaning kit. If the FDD still does not function properly after cleaning, go to Procedure 3.
Page 35 Diagnostic Test Program Execution Check The Floppy Disk Drive Diagnostic Test program is stored on the T1900/T1900C Diagnostics Disk. After loading Toshiba MS-DOS, run the diagnostics program. Refer to Chapter 3, Tests and Diagnostics, for more information about the diagnostic test procedures.
Page 36: Connector Check And Replacement Check
Procedure 4 Connector Check and Replacement Check The 3.5-inch Floppy Disk Drive is connected to the lower system board by the FDD cable. This cable may become disconnected from the system board or damaged. Disassemble the T1900/T1900C following the steps described in Chapter 4, Replacement Procedures and perform the following checks: Check 1 Make sure the FDD cable is firmly connected to the lower system board.
Page 37: Hard Disk Drive Troubleshooting
Toshiba MS-DOS Manual for more information about how to perform this command. Procedure 1 Partition Check Insert the Toshiba MS-DOS system disk and turn on the computer, then perform the following checks: Check 1 Type C: and press Enter. If you cannot change to Drive C, go to Check 2. If you can change to Drive C, go to Procedure 2.
Page 38 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 39: Format Check
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 T1900/T1900C Diagnostic Disk, format the HDD with a low level format option.
Page 40 Procedure 4 Diagnostic Test Program Execution Check The HDD test program is stored in the T1900/T1900C Diagnostics Disk. Perform all of the HDD tests in the Hard Disk Drive Test. Refer to Chapter 3, Tests and Diagnostics, for more information about the HDD test program. If an error is detected during the HDD test, an error code and status will be displayed;...
Page 41: Keyboard Troubleshooting
Keyboard Troubleshooting To determine if the T1900/T1900C’s keyboard is functioning properly, perform the following procedures. Start with Procedure 1 and continue with the other procedures as instructed. Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector and Replacement Check Procedure 1 Diagnostic Test Program Execution Check Execute the Keyboard Test in the Diagnostic Program.
Page 42: Display Troubleshooting
The Display Test program is stored on the T1900/T1900C Diagnostic Disk. This program checks the display controller on the upper system board (FATSU*). After loading Toshiba MS-DOS, run the Diagnostic Program. Refer to Chapter 3, Tests and Diagnostics, for details.
Page 43: Connector Check
Procedure 4 Connector Check The Display unit has an LCD module, Fluorescent Lamp (FL), display switch, and FL inverter board. The FL and FL inverter board are connected by two cables. The LCD module and upper system board are connected by two signal cables as shown below. Any of these cables may be disconnected.
Page 44: Replacement Check
Procedure 5 Replacement Check The FL, FL inverter board, LCD module, and upper system board are connected to the display circuits. Any of these components may be damaged. Refer to Chapter 4 for instructions on how to disassemble the computer and then perform the following checks: If the FL does not light, perform Check 1.
Page 45: The Diagnostic Test
The Diagnostic Test This chapter explains how to use the T1900/T1900C’s Diagnostic Test program (TESTCE19) to test the functions of the T1900/T1900C’s hardware modules. The Diagnostics Program is stored on the T1900/T1900C Diagnostic Disk and consists of 18 programs that are grouped into the Service Program Module (DIAGNOSTIC MENU) and the Test Program Module (DIAGNOSTIC TEST).
Page 46 A cleaning kit to clean the floppy disk drive heads (Head Cleaning) A PCMCIA wraparound connector for the I/O card test (PCMCIA test) A printer wraparound connector for the printer wraparound test (Printer test) An RS-232-C wraparound connector for the RS-232-C port wraparound test (ASYNC test) The following sections detail the tests within the Diagnostic Test function of the DIAGNOS- TIC TEST option menu.
Page 47: Executing The Diagnostic Test
Executing the Diagnostic Test Toshiba MS-DOS is required to run the T1900/T1900C diagnostics program. To start the program, follow these steps: Turn on the computer and allow it to boot from the A: drive. Insert the T1900/T1900C Diagnostics disk in the computer’s internal floppy disk drive.
Page 48 To select the DIAGNOSTIC TEST menu from the DIAGNOSTICS MENU, set the highlight bar to 1, and press Enter. The following menu appears: TOSHIBA personal computer T1900 DIAGNOSTICS version X.XX (c) copyright TOSHIBA Corp. 19XX DIAGNOSTIC TEST MENU : 1 - SYSTEM TEST...
Page 49 Select the desired subtest from the subtest menu and press Enter. The following messages appear: TEST LOOP : YES ERROR STOP : YES Use the arrow keys to move the cursor to the desired option and press Enter. Selecting YES for TEST LOOP sets the test to run continuously until it is halted by the user.
Page 50: 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 H/W status Version check MEMORY RAM constant data RAM address pattern data RAM refresh Protected mode Memory module...
Page 51 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) Card modem loopback (2400BPS) Interrupt test Sequential read Address uniqueness Random address/data Cross talk & peak shift Write/read/compare (CE) Write specified address Read specified address...
Page 52: 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 boards from address F0000h to FFFFFh (64KB).
Page 53 Subtest 03 Version check This subtest checks the version of the following items: BIOS ROM BOOT ROM KBC Version PS Microprocessor Version The subtest compares these items to the reference data stored in the test pro- gram. When the read information is lower than the reference data, the test program displays the following screen image.
Page 54: 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 RAM constant data (real mode) This subtest writes a 256-byte unit of constant data to conventional memory (0 to 640 KB), then reads the new data and compares the results with the original...
Page 55 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 2, 4, 8, and 16 MBs. After selecting Subtest 05, the following message will appear: Extended memory size (1:2 MB,2:4 MB,3:8 MB,4:16 MB) ? Select the number that corresponds to the memory card installed in the T1900/...
Page 56: 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 subtests that test the T1900/T1900C’s keyboard actions and mouse connections. Move the highlight bar to the subtest you want to execute and press Enter.
Page 57 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 58 Subtest 04 DCBP Connect Check NOTE: To execute the DCBP connect check, a ball-point mouse must be connected to the computer. This subtest checks whether a ball-point mouse is connected or not. If this test does not detect an error, it returns to the subtest menu. If it detects an error, the following message appears: KBD-DCBP INTERFACE ERROR [[ HALT OPERATION ]]...
Page 59: Display Test
Display Test To execute the Display Test, select 4 from the DIAGNOSTIC TEST menu, press Enter and follow the directions displayed on the screen. The Display Test contains eleven subtests that test the T1900/T1900C’s display in various modes. Move the highlight bar to the subtest you want to execute and press Enter.
Page 60 After pressing Enter, 16 colors or 16 gray scales of mode 13h appear in the 320x200 graphics mode as shown below: 320*200 GRAPHICS DISPLAY [ 13 ] BLACK BLUE GREEN CYAN MAGENTA BROWN WHITE GRAY LIGHT BLUE LIGHT GREEN LIGHT CYAN LIGHT RED LIGHT MAGENTA YELLOW...
Page 61 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. 80*XX CHARACTER DISPLAY 012345678901234567890123456789012345678901234567890123456789012345678901234567 !”#$%&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklm !”#$%&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklmn “#$%&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmno #$%&’()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_‘abcdefghijklmnop...
Page 62 Subtest 06 640x200 Character Display (mode 6, E) This subtest displays even dots, odd dots, and all dots in the 640x200 dot graphics mode 6 and E as shown below: 640*200 GRAPHICS DISPLAY : [X] EVEN DOTS ODD DOTS ALL DOTS DRIVEN DRIVEN DRIVEN...
Page 63 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 After completion of this test, pressing Ctrl + Break exits this subtest and returns to the DISPLAY TEST menu.
Page 64 Subtest 10 LED/DAC Pallet This subtest checks the Caps Lock, Num Lock, and Overlay LEDs by key operation. [ Caps/Num/Overlay LED test ] (1)Press [ Caps Lock ] key !...Caps (on/off) (2)Press [ Fn + NumLock ] key !...Num (on/off) (3)Press [ Fn ] key...
Page 65: Floppy Disk Test
Floppy Disk Test CAUTION: Before running the floppy disk test, prepare a formatted work disk since the contents of the floppy disk in the FDD will be erased. Remove the Diagnostics Disk and insert the work disk into the FDD. To execute the Floppy Disk Test, select 5 from the DIAGNOSTIC TEST menu, press Enter and follow the directions displayed on the screen.
Page 66 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 67: 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 T1900/T1900C. NOTE: An IBM-compatible printer must be connected to the system to execute this test.
Page 68 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 The subtest prints the various print types shown below: PRINTER TEST THIS LINE SHOWS NORMAL PRINT. THIS LINE SHOWS DOUBLE-WIDTH PRINT.
Page 69: 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 six subtests that test the T1900/T1900C’s asynchronous communication functions. Move the highlight bar to the subtest you want to execute and press Enter.
Page 70 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 G.
Page 71: Hard Disk Test
CAUTION: The contents of the hard disk will be erased when Subtest 02, 03, 04, 05, 06, 08, 09, or 10 is executed. Before running the test, transfer the contents of the hard disk to a floppy disk(s). This can be done with the Toshiba MS-DOS BACKUP com- mand.
Page 72 The Hard Disk Test message appears after you respond to the Detail Status prompt. Select the number of the subtest you want to execute and press Enter. The follow- ing message displays during each subtest. HARD DISK TEST XXXXXXX SUB-TEST : XX PASS COUNT: XXXXX ERROR COUNT: XXXXX WRITE DATA: XX READ DATA : XX ADDRESS : XXXXXX STATUS : XXX...
Page 73 Subtest 04 Cross Talk & Peak Shift This subtest writes eight types of worst pattern data (shown below) to a cylin- der, then reads the data while moving from cylinder to cylinder. Worst Pattern Data Cylinder ‘B5ADAD’ 0 cylinder ‘4A5252’ 1 cylinder ‘EB6DB6’...
Page 74: 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 T1900/T1900C’s real timer functions. Move the highlight bar to the subtest you want to execute and press Enter.
Page 75 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 12-31-1992 Current time 23:59:58...
Page 76 3.13 PCMCIA Test NOTE: To execute this subtest, the PCMCIA wraparound card is required. Subtest 01 I/O Card Test (PCMCIA) This test checks the following signal lines 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 77: Error Codes And Error Status Names
3.14 Error Codes and Error Status Names Table 3-3 lists the error codes and error status names for the Diagnostic Tests. Table 3-3 Error Codes and Error Status Names (1/2) Device Name Error Code Error Status Name (COMMON) Data Compare Error SYSTEM ROM Checksum Error MEMORY...
Page 78 Table 3-3 Error Codes and Error Status Names (2/2) Device Name Error Code Error Status Name ASYNC DSR On Time-out CTS On Time-out RX-READY Time-out TX-BUFFER Full Time-out Parity Error Framing Error Overrun Error Line Status Error Modem Status Error No Carrier (Card Modem) Error (Card Modem) No Dial Tone (Card Modem)
Page 79: Hard Disk Test Detail Status
3.15 Hard Disk Test Detail Status When an error occurs in the hard disk test, the following message is displayed: HDC status = XXXXXXXX Detailed information about the hard disk test error is displayed on the screen by an eight-digit number.
Page 80 Table 3-5 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”...
Page 81: Hard Disk Format
CAUTION: The contents of the hard disk will be erased when this program is ex- ecuted. Before executing the function, transfer the contents of the hard disk onto a floppy disk(s). This can be done with the Toshiba MS-DOS BACKUP command. See the Toshiba MS-DOS manual for details.
Page 82 CAUTION: The contents of the hard disk will be erased when this program is ex- ecuted. Before executing the function, transfer the contents of the hard disk onto a floppy disk(s). This can be done with the Toshiba MS-DOS BACKUP command. See the Toshiba MS-DOS manual for details.
Page 83 All track FORMAT Pressing 1 selects "All track FORMAT," which formats the entire disk. [All track FORMAT] Drive #1 = HDD #2 = Non Cylinder : XXXX Head Sector <<< Model name = >>> The following questions also appear at the bottom of the screen in succession: Drive number select (1:#1,2:#2) ? (1) Select a drive number and press Enter.
Page 84 (5) All track format All tracks are formatted as good tracks except those registered as bad tracks in Item (4) above or those identified as bad tracks in track verifi- cation described in Item (6) below. (6) 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 format- ted as a bad track automatically.
Page 85 Press Enter to return to the Hard Disk Format menu. 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. 3-41...
Page 86: Head Cleaning
3.17 Head Cleaning 3.17.1 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 function. 3.17.2 Operations Select 4 (Head Cleaning) from the DIAGNOSTIC MENU and press Enter to display the following messages: DIAGNOSTICS - FLOPPY DISK HEAD CLEANING : VX.XX Mount cleaning disk(s) on drive(s).
Page 87: Log Utilities
3.18 Log Utilities 3.18.1 Function Description This function logs error information generated while a test is in progress and stores the results in RAM. The Log Utilities 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 88 Error information displayed on the screen can be manipulated using the fol- lowing 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 89: Running Test
3.19 Running Test 3.19.1 Function Description This function automatically executes the following tests in sequence: 1. System Test (Subtest 01) 2. Memory Test (Subtests 01, 02, 04, 06, and 07) 3. Display Test (Subtests 01 to 08) 4. FDD Test (Subtest 02) 5.
Page 90 Select Yes or No and press Enter. The following message appears: 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 91: 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: (1) 2D: Double-sided, double-density, 48/67.5 TPI, MFM mode, 512 bytes, 9 sectors/track.
Page 92 FORMAT program (1) Selecting FORMAT displays the following message: DIAGNOSTICS - FLOPPY DISK FORMAT : VX.XX Drive number select (1:A, 2:B) ? (2) Select a drive number to display the following message: Type select (0:2DD-2DD,1:2D1-2D,2:2D-2HD,3:2HD-2HD) ? (3) 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 93 (3) Remove the Diagnostics Disk from the FDD, insert the source disk, and press any key. The following message appears, indicating the program has started. [ FDD TYPE ] : TRACK = XXX [ FDD TYPE ] : HEAD [ FDD TYPE ] : SECTOR = XX Copy start [[ track, head = XXX X ]] (4) Remove the source disk from the FDD, insert a formatted work disk, and...
Page 94 (5) Insert a source disk and press any key. The following message appears: —— Max. address —— [ Track ] = 0079 [ Head ] = 01 [Sector ] = 09 Track number ?? (6) Set the track number you want to dump. The system will access the disk and dump a list.
Page 95: System Configuration
3.21 System Configuration 3.21.1 Function Description The System Configuration program contains the following configuration information for the T1900/T1900C: 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 96 3.22 SETUP 3.22.1 Function Description This program displays the current system setup information as listed below: Memory (1) Total (2) Base (3) Extended Memory (4) Hard RAM (5) Shadow BIOS ROM Display (1) Display Adapter (2) LCD Display Mode (3) LCD Gray Scale Level COM/PCMCIA/FDD/PRT (1) Serial Port (2) PC Card Slot...
Page 97: Accessing The Setup Program
3.22.2 Accessing the SETUP Program Select 0 (Setup) from the DIAGNOSTICS MENU and press Enter. The following screen displays: T1900 SETUP BIOS version = x.xx MEMORY HARD DISK Capacity = **MB Total = 4096 KB Base = 640 KB Extended = 3328 KB POWER ON PASSWORD Not Registered...
Page 98: Setup Options
3.22.5 The Factory Preset Configuration When you access SETUP, the current configuration is displayed. To show the factory preset configuration, press Home. To accept the default settings, press End and then press Y. 3.22.6 SETUP Options The SETUP screen is divided into functionally related groups. This section describes each group and its options.
Page 99 Display This group of options helps you configure the computer’s display. (1) Display Adapter This field displays the internal adapter for the VGA internal display: VGA compatible. This value cannot be changed. (2) LCD Display Mode Use this option to set the computer’s display mode. Color Selects 80 x 25 text or 640 x 480 graphics modes.
Page 100 (PCMCIA default) Not used (Disables port) If the COM level for the serial port is set to the same level as the Toshiba card modem, the card modem’s COM level is automatically reset to Not Used. (2) PC Card Slot This option enables you to select how the PC Card slot is used.
Page 101 (3) External FDD/PRT Use this option to assign the function of the PRINTER/FDD port. Printer Configures the port for output to a printer or other parallel device. (Default) FDD A Configures the port for output and input to and from the external 5 1/4"...
Page 102 Power-on Password This option allows you to set or reset the power-on password. If the power-on password has not been set, the SETUP program displays the following mes- sage: Not registered If the password has been set, the following displays: Registered (1) How to set the Password To set the power-on password, follow the steps listed below.
Page 103 If the two character strings do not match, the password is not regis- tered and the display changes to: Entry Error !! Repeat Steps (a) through (d) to set the password. Before exiting Setup, follow the instructions in the Making A Password Service Disk section to make a password service disk.
Page 104 (c) Press End. The system displays the following messages: Save settings, perform self test and reboot? (Y/N) Insert Password Service Disk if necessary. (d) Press Y. The computer writes the password data to the diskette and displays: Remove the Password Service Disk, then press any key. (e) Remove the diskette and press any key.
Page 105 (3) Processing Speed This feature changes the CPU processing speed. It is also available in the Pop-up Window. High Fast processing speed (Default) Slow processing speed The Low setting puts the CPU clock speed at half the regular speed. (4) Battery Save Mode This option selects Automatic Long Life, Automatic Normal Life, or User Setting of the BATTERY SAVE OPTION.
Page 106 (5) Popup This option enables or disables the Pop-up Window. Enabled Allows access to the Pop-up Window. (Default) Disabled Denys access to the Pop-up Window. (6) Speaker This option enables and disables software use of the system speaker. Setting this option to off disables the self-test alarm. All other system alarms are unaffected.
Page 107 (2) 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 3, 5, 10, 15, 20 or 30 minutes.
Page 108: Floppy Disk Drive
General This section explains how to disassemble the T1900/T1900C 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 must be removed in order to remove others. Always start by removing the battery pack, then follow the order on the chart to determine which FRU must be removed in order to repair the one you think is causing the T1900/T1900C to operate improperly.
Page 109: Disassembly Procedures
Do not perform any operations that are not necessary, and use only the described procedures for disassembling and installing FRUs in the T1900/T1900C. After removing parts from the computer, place them in a safe place away from the computer so they will not be damaged and will not interfere with your work. You will remove many screws when you disassemble the T1900/T1900C.
Page 110: Assembly Procedures
Assembly Procedures After you have disassembled the T1900/T1900C and fixed or repaired the problem that was causing the computer to operate abnormally, you will need to reassemble it. While assembling the computer, remember the following general points: Take your time and make sure you follow the instructions closely. Most problems arise when you get in a hurry.
Page 111: Removing The Battery Pack
The Battery Pack Removing the Battery Pack To remove the T1900/T1900C battery pack, follow the steps below and refer to Figure 4-1. Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer. Slide open the cover to the battery latch (located on the left, front of the computer) and press the release button until it clicks.
Page 112: Optional Memory Card
Optional Memory Card Removing an Optional Memory Card To remove an optional memory card from the T1900/T1900C, follow the steps below and refer to Figure 4-2. Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer. Remove the battery pack as described in Section 4.2.
Page 113: Installing An Optional Memory Card
Installing an Optional Memory Card To install an optional memory card in the T1900/T1900C, follow the steps below and refer to Figure 4-2. The top of an optional memory card is marked with the word “insert” and an arrow pointing toward the connecting edge. Turn the memory card so that it is facing up and carefully insert the connecting edge (arrow first) into the slot.
Page 114 Optional PCMCIA Card Removing an Optional PCMCIA Card To remove an optional PCMCIA card from the T1900/T1900C, follow the steps below and refer to Figure 4-3. Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer. Remove the battery pack as described in Section 4.2.
Page 115 Installing an Optional PCMCIA Card To install an optional PCMCIA card in the T1900/T1900C, follow the steps below and refer to Figure 4-4. To install a PCMCIA card, carefully insert the card, making sure the card is right side up and the contact surface is inserted first. When the card is almost fully seated, you will feel some resistance.
Page 116: Removing The Top Cover
Top Cover Removing the Top Cover To remove the T1900/T1900C’s top cover, follow the steps below and refer to Figures 4-5 and 4-6. Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer. Remove the battery pack, optional memory card and optional PCMCIA card as described in Sections 4.2, 4.3, and 4.4.
Page 117 Open the expansion memory slot cover on the right side of the unit (Figure 4-6). Using a jeweler's screwdriver, remove the screw cover located above the function keys, then remove the M2.5x10 screw (Figure 4-6). NOTE: Be sure to use the correct screws when reassembling the top cover. Unsnap the latches securing the top cover to the base assembly.
Page 118: Installing The Top Cover
Installing the Top Cover To install the T1900/T1900C’s top cover follow the steps below and refer to Figures 4-5 and 4-6. Place the top cover on the T1900/T1900C. Begin at the back and snap the top cover into place. Continue along the sides and snap the front latches last (Figure 4-6).
Page 119: Removing The Keyboard
Keyboard Removing the Keyboard To remove the T1900/T1900C’s keyboard, follow the steps below and refer to Figure 4-7. Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer. Remove the battery pack, optional memory card, optional PCMCIA card and top cover as described in Sections 4.2 through 4.5.
Page 120: Installing The Keyboard
Installing the Keyboard To install the T1900/T1900C’s keyboard, follow the steps below and refer to Figures 4-7 and 4-8. Connect the keyboard cable to pressure-plate connector PJ4 on the upper system board (Figure 4-7). Seat the keyboard in the computer. Note that a fold is built into the keyboard cable.
Page 121 Hard Disk Drive • Backup Battery Removing the Hard Disk Drive • Backup Battery To remove the T1900/T1900C’s hard disk drive and backup battery, follow the steps below and refer to Figures 4-9 through 4-12. Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer.
Page 122 Figure 4-10 Removing the Backup Battery Remove the M2.5x6 screw from the front of the HDD, and slide the HDD to the front to disconnect the HDD connector (Figure 4-11). Lift out the HDD from the system unit. Figure 4-11 Removing the HDD Disconnect the backup battery cable from PJ503 (Figure 4-10).
Page 123 Remove the four flat-head M3x4 screws securing the bracket to the HDD and slip off the bracket (Figure 4-12). Figure 4-12 Removing the Bracket from the HDD Installing the Hard Disk Drive and Backup Battery To install the T1900/T1900C’s hard disk drive and backup battery, follow the steps below and refer to Figures 4-9 through 4-13.
Page 124 Route the backup battery cable in the space between the HDD and the battery cable insulator, then place the backup battery in the backup battery slot (Figure 4- 10). Replace the tape over the backup battery cable. Secure the M2.5x6 screw at the front of the HDD (Figure 4-11). Set the keyboard base plate in place and secure it with the five M2.5x6 screws (Figure 4-9).
Page 125: Removing The Display Mask
Display Mask Removing the Display Mask To remove the T1900/T1900C’s display mask, follow the steps below and refer to Figure 4- Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer. NOTE: It is not necessary to remove the display assembly from the com- puter to remove its components Remove the two screw covers from the display hinges to expose two screws...
Page 126: Installing The Display Mask
Installing the Display Mask To install the T1900/T1900C’s display mask, follow the steps below and refer to Figure 4-14. Set the display mask in place and secure the snaps beginning with the four snaps in the display supports, three snaps in the larger support and one snap in the small support.
Page 127: Removing The Display Assembly
Display Assembly Removing the Display Assembly To remove the T1900/T1900C’s display assembly, follow the steps below and refer to Figures 4-15 through 4-17. Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer. Remove the battery pack, optional memory card, optional PCMCIA card, top cover, keyboard, keyboard base plate, and display mask as described in Sections 4.2 through 4.8.
Page 128 Figure 4-16 Removing the System Board Cover Disconnect the two display cables from PJ7 and PJ8 on the system board (Figure 4-17). NOTE: The T1900 has only one display cable: PJ7. Carefully disconnect the display sensor switch cable from PJ11 on the system board.
Page 129: Installing The Display Assembly
Installing the Display Assembly To install the T1900/T1900C’s display assembly, follow the steps below and refer to Figures 4-15 through 4-17. Place the display assembly on the computer aligning the brackets with the screw holes on the middle-frame assembly. Be sure to route the clear plastic insulator between the display assembly and the bottom chassis (Figure 4-17).
Page 130 4.10 Upper System Board Removing the Upper System Board (FATSU*) To remove the T1900/T1900C’s upper system board, follow the steps below and refer to Figure 4-18. Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer. Remove the battery pack, optional memory card, optional PCMCIA card, top cover, keyboard, HDD, display mask, and display assembly as described in Sec- tions 4.2 through 4.9.
Page 131 Installing the Upper System Board To install the T1900/T1900C’s upper system board, follow the steps below and refer to Figure 4-18. Place the upper system board on the lower system board aligning connectors PJ5 and PJ10. Press the VGA port area to seat the upper right corner of the system board, then press the PJ5 and PJ10 connectors to connect the upper system board to the lower system board.
Page 132 4.11 Lower System Board · RTC Battery Removing the Lower System Board · RTC Battery To remove the T1900/T1900C’s lower system board and RTC battery, follow the steps below and refer to Figures 4-19 through 4-22. Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer.
Page 133 Lift up the right side of the lower system board assembly and slide the assembly to the right to release the DC IN jack on the left side of the board. CAUTION: When you remove the lower system board assembly, carefully slide the FDD cable out of the hole on the middle frame assembly.
Page 134 Remove the two M2x8 screws on the PCMCIA connector, and two M2.5x6 screws on the lower system board (Figure 4-22). Lift off the PCMCIA card ejector. Separate the lower system board from the middle frame assembly. Lift out the PCMCIA frame assembly. Figure 4-22 Removing the Lower System Board Installing the Lower System Board and RTC Battery To install the T1900/T1900C’s lower system board and RTC battery, follow the steps below...
Page 135 Turn the assembly over, and place the lower system board assembly into the computer's chassis, inserting the DC IN jack into the opening on the left side of the chassis (Figure 4-20). CAUTION: When you install the lower system board assembly, be careful to thread the FDD cable through the FDD cable hole.
Page 136 4.12 Floppy Disk Drive and Mouse/KB Board Removing the Floppy Disk Drive and Mouse/KB Board To remove the T1900/T1900C’s floppy disk drive and mouse/KB board, follow the steps below and refer to Figures 4-23 through 4-25. Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer.
Page 137 Remove the three M2x3 black screws securing the FDD bracket and remove the bracket (Figure 4-25). Figure 4-25 Removing the FDD Bracket Installing the Floppy Disk Drive and Mouse/KB Board To install the T1900/T1900C’s floppy disk drive and mouse/KB board, follow the steps below and refer to Figures 4-23 through 4-25.
Page 138 4.13 T1900C FL Inverter Board Removing the T1900C FL Inverter Board To remove the T1900C’s FL inverter board, follow the steps below and refer to Figures 4-26 and 4-27. Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer.
Page 139 Figure 4-27 Removing the FL Inverter Board Installing the T1900C FL Inverter Board To install the T1900C’s FL inverter board, follow the steps below and refer to Figures 4-26 and 4-27. Connect the FL inverter cable to CN1 on the inverter board and the two FL cables to CN2 and CN3 (Figure 4-27).
Page 140 4.14 T1900C LCD Module Removing the Color LCD Module To remove the T1900C’s color LCD module, follow the steps below and refer to Figure 4-28. Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer. Remove the battery pack, optional memory card, optional PCMCIA card, top cover, display mask, display assembly and inverter board as described in Sections 4.2, 4.3, 4.4, 4.5, 4.8, 4.9 and 4.13.
Page 141 Installing the T1900C LCD Module To install the T1900C’s LCD module, follow the steps below and refer to Figure 4-28. Connect the three display cables to the LCD module, and carefully rotate the LCD module into the LCD cover. Secure the M2.5x6 screw on the LCD module. Install the FL inverter board, display assembly, display mask, top cover, optional PCMCIA card, optional memory card and battery pack as described in Sections 4.13, 4.9, 4.8, 4.5, 4.4, 4.3 and 4.2.
Page 142 4.15 T1900C Fluorescent Lamp (FL) CAUTION: When you remove the FL, be careful not to let any dust or other foreign matter enter the display panel components. Removing the T1900C FL To remove the T1900C’s FL, follow the steps below and refer to Figures 4-29 through 4-31. Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer.
Page 143 Remove the four M2x4 silver screws securing the FL unit and LCD panel to the back frame (Figure 4-30). Figure 4-30 Removing the FL Screws Pull out the reflective sheet from the LCD module. Lift out the FL (Figure 4-31). Figure 4-31 Removing the FL 4-36...
Page 144 Installing the T1900C FL Unit To install the T1900C’s FL unit, follow the steps below and refer to Figures 4-29 through 4- Place the FL on the FL unit and cover the FL using the reflective sheet (Figure 4- 31). Secure the LCD panel with four M2x4 screws (Figure 4-30).
Page 145 4.16 T1900 FL Inverter Board Removing the T1900 FL Inverter Board To remove the T1900’s FL inverter board, follow the steps below and refer to Figures 4-32 and 4-33. Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer.
Page 146 To install the T1900’s FL inverter board, follow the steps below and refer to Figures 4-32 and 4-33. Connect the FL inverter cable and FL cables to CN1 and CN2 on the FL inverter board (Figure 4-33). Seat the FL inverter board and route the cables so they will not be pinched by the display cover or other component.
Page 147 4.17 T1900 LCD Module Removing the T1900 Liquid Crystal Display (LCD) Module CAUTION: The T1900 LCD module is easily damaged. Before removing the module, refer to Appendix A for precautions on handling. To remove the T1900’s Liquid Crystal Display Module, follow the steps below and refer to Figure 4-34.
Page 148 Installing the Liquid Crystal Display Module To install the T1900’s liquid crystal display module, follow the steps below and refer to Figure 4-34. Connect the two display cables to CN1 and CN2 on the LCD module. Place the module in the cover and route the cables so they will not be pinched by the display panel or other components.
Page 149 4.18 T1900 Fluorescent Lamp (FL) Removing the T1900 Fluorescent Lamp To remove the T1900’s Fluorescent Lamp, follow the steps below and refer to Figure 4-35. Turn off the power to the T1900/T1900C, and, if attached, disconnect the AC adapter, power cord and all external cables connected to the computer. Remove the battery pack, optional memory card, optional PCMCIA card, top cover, display mask, FL inverter, and LCD module as described in Sections 4.2, 4.3, 4.4, 4.5, 4.8, 4.9, 4.16, and 4.17.
Page 150 Installing the Fluorescent Lamp To install the T1900’s fluorescent lamp, follow the steps below and refer to Figure 4-35. Place the fluorescent lamp in position in the LCD module. Slip the edge of the plastic cover under the metal frame and align the holes in the cover with the corresponding holes in the display assembly cover.
Page 151: Appendix A Handling The Lcd Module
Appendix A Handling the LCD Module Precautions for Handling the T1900/T1900C LCD Module The T1900/T1900C’s LCD module can be easily damaged during assembly or disassembly. Therefore, please observe the following precautions when handling the LCD module. 1. When installing the LCD module in the LCD cover, be sure to seat it so that it is properly aligned and maximum visibility of the display is maintained.
Page 152 3. If the panel’s surface gets dirty, wipe it with cotton or a soft cloth. If it is still dirty, try breathing on the surface to create a light condensate and wipe it again. If the surface is very dirty, we recommend a CRT cleaning agent. Apply the agent to a cloth and then wipe the panel’s surface.
Page 153 6. CMOS-LSI circuits are used in the module, so guard against damage from electrostatic discharge. Be sure to wear a wrist or ankle ground when handling the module. 7. Do not expose the module to direct sunlight or strong ultraviolet rays for long periods.
Page 154 9. Do not disassemble the LCD module. Disassembly can cause malfunctions. 10. If you transport the module, do not use packing material that contains epoxy resin (amine) or silicon glue (alcohol or oxime). These materials can release gas that can damage the panels’ polarization.
Page 155: Board Layout
Appendix B Board Layout FATSU* Upper System Board Figure B-1 FATSU* Upper System Board (front)
Page 156 Figure B-2 FATSU* Upper System Board (back)
Page 157 Table B-1 FATSU* Upper System Board ICs and Connectors (front) Mark Number Name System Controller Gate Array IC12 Clock Generator IC15 Keyboard Controller IC18 Display Controller Optional Memory Card Connector RTC Battery Connector Mouse/KB Connector Keyboard Connector PJ7, 8 LCD Connector Table B-2 FATSU* Upper System Board ICs and Connectors (back) Mark Number...
Page 158 FATSL* Lower System Board Figure B-3 FATSL* Lower System Board (front)
Page 159 Figure B-4 FATSL* Lower System Board (back)
Page 160 Table B-3 FATSL* Lower System Board ICs and Connectors (front) Mark Number Name IC201 Super Integration IC204 BIOS ROM IC508 Power Supply Microprocessor PJ201 PRT/FDD Connector PJ202 Internal FDD Connector PJ204 Serial Interface Connector PJ501 Power Supply Connector PJ206 Joint Connector PJ502 DC IN Connector PJ503...
Page 161: Pin Assignments
Appendix C Pin Assignments PJ1 Memory Slot Connector (88-Pin) Table C-1 Memory Slot Connector Pin Assignments (88-pin) Signal Signal – – D00;100 D16;100 D01;100 D17;100 D02;100 D18;100 D03;100 D19;100 D04;100 D20;100 D05;100 D21;100 D06;100 D22;100 – D23;100 D07;100 – – RAS2;001 –...
Page 162 PJ2 RTC Connector (3-Pin) Table C-2 RTC Connector Pin Assignments (3-pin) Signal Signal – – – PJ3 Mouse/KB Connector (10-Pin) Table C-3 Mouse/KB Connector Pin Assignments (10-pin) Signal Signal – EKBDAT;100 – EKBCLK;100 – – MOUSED;100 – MUSECK;100 – PJ4 KB I/F Connector (19-Pin) Table C-4 KB I/F Connector Pin Assignments (19-pin) Signal Signal...
Page 163 PJ5 (PJ501) Power Supply Interface Connector (40-Pin) Table C-5 Power Supply Interface Connector Pin Assignments (40-pin) Signal Signal – – – – DCLED;100 I (O) RAMV – BTFULL;100 I (O) RAMV – CHG;100 I (O) – – – SUSST;100 O (I) CPUV –...
Page 164 PJ8 LCD Connector 2 (10-Pin) Table C-7 LCD Connector 2 Pin Assignments (10-pin) Signal Signal SCLD09;100 SCLD10;110 SCLD11;110 SCLD13;110 SCLD15;110 SCLD14;110 SCLD08;110 – SCLD12;110 – PJ9 CRT I/F Connector (15-Pin) Table C-8 CRT I/F Connector Pin Assignments (15-pin) Signal Signal RED;101 –...
Page 165 PJ10 (PJ206) Joint Connector (100-Pin) Table C-9 CRT I/F Connector Pin Assignments (100-pin) Signal Signal – SA11;100 $24MHZ;100 O (I) SA10;100 – SA09;100 – SA08;100 SD00;100 SA07;100 SD01;100 SA00;100 SD02;100 SA01;100 SD03;100 SA02;100 SD04;100 SA03;100 SD10;100 SA04;100 SD11;100 SA05;100 SD12;100 SA06;100 REFRSH;000 –...
Page 166 C.10 PJ11 Display Sensor Switch Connector (2-Pin) Table C-10 Display Sensor Switch Connector Pin Assignments (2-pin) Signal Signal PNLOFF;000 – C.11 PJ201 PRT/FDD Connector (for Printer) (25-Pin) Table C-11 PRT/FDD Connector (for printer) Pin Assignments (25-pin) Signal Signal STROB AUTFD PDB00 ERROR PDB01...
Page 167 C.12 PJ201 PRT/FDD (Ext) Connector (for FDD) (25-Pin) Table C-12 PRT/FDD (Ext) Connector (for FDD) Pin Assignments (25-pin) Signal Signal LOWD INDX SSEL DIRC STEP RDAT – DKCH – – – – – – – – – WDAT – C.13 PJ202 Internal FDD Connector (26-Pin) Table C-13 Internal FDD Connector Pin Assignments (26-pin) Signal...
Page 168 C.14 PJ203 Internal HDD Connector (44-Pin) Table C-14 Internal HDD Connector Pin Assignments (44-pin) Signal Signal RESET;000 IOWR;000 – – SD07;100 IORD;000 SD08;100 – SD06;100 N.C. – SD09;100 N.C. – SD05;100 IIRDY;100 SD10;100 – SD04;100 IRQ14;100 SD11;100 IIO16;000 SD03;100 SA01;100 SD12;100 N.C.
Page 169 C.16 PJ205 PC Card Slot Connector (68-Pin) Table C-16 PC Card Slot Connector Pin Assignments (68-pin) Signal Signal – – CDA03;100 CD1A;000 CDA04;100 CDA11;100 CDA05;100 CDA12;100 CDA06;100 CDA13;100 CDA07;100 CDA14;100 CE1A;000 CDA15;100 CADA10;100 CE2A;000 OEA;000 – CADA11;100 IORA;000 CADA09;100 IOWA;000 CADA08;100 CADA17;100 CADA13;100...
Page 170 C.17 PJ502 DC IN Connector (3-Pin) Table C-17 DC IN Connector Pin Assignments (3-pin) Signal Signal DCIN – – – C.18 PJ503 Backup Battery Connector (2-Pin) Table C-18 Backup Battery Connector Pin Assignments (2-pin) Signal Signal SUBBAT – – C.19 PJ504 Main Battery Connector (5-Pin) Table C-19 Main Battery Pin Assignments (5-pin) Signal...
Page 171 Appendix D USA Display Codes Table D-1 USA Display Codes...
Page 172: Keyboard Scan/Character Codes
Appendix E Keyboard Scan/Character Codes Table E-1 Scan Codes (Sets 1 and 2) (1/3) Code Set 1 Code Set 2 Keytop Make Break Make Break Note ‘ ~ 7 & BkSp 29 (42) Caps Lock...
Page 173 Table E-1 Scan Codes (Sets 1 and 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 174 Table E-1 Scan Codes (Sets 1 and 2) (3/3) Code Set 1 Code Set 2 Keytop Make Break Make Break Note PrintSc Pause — — — — Notes: 1* Scan codes differ by mode. 2* Scan codes differ by overlay function. 3* In combination with Fn key, makes different codes.
Page 175 Table E-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 176 Table E-4 Scan Codes with Fn Key Code Set 1 Code Set 2 Keytop Make Break Make Break CTRL LALT NUML SCRL Table E-5 Scan Codes in Overlay Mode Code Set 1 Code Set 2 Keytop Make Break Make Break (÷) (–) Table E-6 Scan Codes with Ctrl Key...
Page 177 Table E-7 Scan Codes with Alt Key Code Set 1 Code Set 2 Shift Make Make Pause Common SD C5 Ctrl* * This key generates only Make codes.
Page 178: Keyboard Layouts
Appendix F Keyboard Layouts United States (US) Keyboard Figure F-1 US Keyboard United Kingdom (UK) Keyboard Figure F-2 UK Keyboard...
Page 179 German (GR) Keyboard Figure F-3 GR Keyboard French (FR) Keyboard Figure F-4 FR Keyboard...
Page 180 Spanish (SP) Keyboard Figure F-5 SP Keyboard Italian (IT) Keyboard Figure F-6 IT Keyboard...
Page 181 Scandinavian (SC) Keyboard Figure F-7 SC Keyboard Swiss-German (SL) Keyboard Figure F-8 SL Keyboard...
Page 182 Canadian (Specialized) Keyboard Figure F-9 Canadian Keyboard F.10 Keycap Number Keyboard Figure F-10 Keycap Number Keyboard...
Page 183: Wiring Diagrams
Appendix G 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 G-1 Printer Wraparound Connector RS-232-C Wraparound Connector (3) TD (7) RTS...
Page 184: Rs-232-C Direct Cable (9-Pin To 25-Pin)
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 G-4 RS-232-C Direct Cable (9-pin to 25-pin)

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