Toshiba 710CDT Maintenance Manual
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1.1
Features
The Toshiba 710CDT/720CDT uses extensive Large Scale Integration (LSI) and Complemen-
tary Metal-Oxide Semiconductor (CMOS) technology to provide minimum size and weight,
low power usage and a high degree of reliability. The computer is fully optimized for Win-
®
dows
95 and supports plug and play technology. The computer incorporates the following
features and benefits:
Microprocessor
This computer uses an Intel
Technology (VRT) operating at 2.9/3.3 volts.
Cache memory
The CPU contains a 16 KB cache and a 256 KB level-2 cache with pipe-line burst
SRAM.
Disk storage
This computer has a 1.2 billion byte (1.13 GB) removable HDD pack.
Selectable Bay
The Selectable Bay allows connection to either a Floppy Disk Drive (FDD) or a CD-
ROM drive.
The FDD supports 3.5-inch 2HD (1.44 MB) disks and 2DD (720 KB) disks. The FDD
drive can be connected to an external FDD port with an attachment when the CD-ROM
drive is installed in the Selectable Bay.
A full-size, six-speed CD-ROM drive contains an AT Attachment Packet Interface
(ATAPI) controller, and supports the following formats: Red-Book, Yellow-Book,
CD-ROM XA, Photo CD, CD-Bridge, CD-I, and CD Plus.
Memory
This computer comes standard with 16 MB of Extend Data Out (EDO) DRAM. This
includes 640 KB of conventional memory and 15488 KB of extended memory.
Display
The 710CDT has a 12.1-inch, Thin Film Transistor (TFT) color LCD displaying 800 x
600 pixels.
710CDT/720CDT
®
®
Pentium
133 MHz processor with Voltage Reduction
1-1

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Summary of Contents for Toshiba 710CDT

  • Page 1 This computer comes standard with 16 MB of Extend Data Out (EDO) DRAM. This includes 640 KB of conventional memory and 15488 KB of extended memory. Display The 710CDT has a 12.1-inch, Thin Film Transistor (TFT) color LCD displaying 800 x 600 pixels. 710CDT/720CDT...
  • Page 2 Association (PCMCIA) 5 mm cards (Type II), or one 10.5 mm (Type III) card which supports PCMCIA Release 2.01. These slots can also support advanced PC cards, such as PC Card 16’s multifunction card, CardBus 32-bit card, or a Zoomed Video (ZV) 710CDT/720CDT...
  • Page 3 The modem supports V.34 data communication at 28.8 Kbps, V.17 class-1 facsimile transmissions at 14.4 Kbps, and can be used as a speaker phone and Telephone An- swering Machine (TAM). The computer is equipped with an RJ11 modem jack to connect directly to a telephone line. 710CDT/720CDT...
  • Page 4 The 710CDT/720CDT Personal Computer is shown in Figure 1-1 and their system configura- tion in Figure 1-2. Figure 1-1 710CDT/720CDT personal computer Figure 1-2 710CDT/720CDT system unit configuration 710CDT/720CDT...
  • Page 5: System Unit Block Diagram

    Intel Pentium processor operating at 133 MHz and 2.9/3.3 volts. A math co-processor and 16 KB cache memory are integrated into the processor. Level-2 cache memory Data RAM: - 256 KB - Two 32K x 32-bit pipe-line burst synchronous SRAM chips - 3.3 volt operation - 8 ns access time 710CDT/720CDT...
  • Page 6 5 volt operation 60 ns access time System controller Gate Array This gate array has the following functions: - CPU interface/control - Level-2 cache memory control - DRAM control - PCI master/slave interface - Write buffer (CPU-DRAM, CPU-PCI, PCI-DRAM) 710CDT/720CDT...
  • Page 7 Communication with power supply Communication with Desk Station V Plus Communication with EEPROM Communication register set - PWM control Beep volume - Speaker control - Universal I/O port - Q-SW control Modem interface Gate Array This gate array controls modem interface LSIs. 710CDT/720CDT...
  • Page 8 The controller provides simultaneous control of both the AccuPoint and a PS/2 mouse. Real Time Clock (RTC) One T9934 chip is used. The T9934 has 128 bytes of memory. Fourteen (14) bytes are used for the calendar and clock, and the remaining 114 bytes are used for system configuration data. 710CDT/720CDT...
  • Page 9 Storage capacity (KB) Unformatted 2,000 1,000 Formatted 1,440 Number of heads Number of cylinders Access time (ms) Track to track Average Head settling time Recording track density (tpi) Data transfer rate (Kbps) Rotation speed (rpm) Recording method Modified Frequency Modulation (MFM) 710CDT/720CDT...
  • Page 10: Inch Hard Disk Drive

    The removable HDD is a random access, nonvolatile storage device. It has a non-removable 2.5-inch magnetic disk and mini-winchester type magnetic heads. 710CDT/720CDT supports a 1.13 GB HDD. The HDD is shown in Figure 1-5, and its specifications are listed in Table 1-2.
  • Page 11 25-pin flat cable. The 710CDT/720CDT AccuPoint pointer control stick, located in the center of the keyboard, provides convenient control of the cursor without requiring desk space for a mouse. The keyboard is shown in Figure 1-6.
  • Page 12 Mode 1 Mode 2 1,026 ATAPI Burst (Mbytes/s) 8.33 (PIO mode 2) Access time (ms) Average Random Access Average Random Seek Average Full Stroke Access Rotation speed (rpm) 200 to 530 1,200 to 3,180 Data Buffer Capacity (Kbytes) 1-12 710CDT/720CDT...
  • Page 13 1.7.1 710CDT TFT Color LCD Module The 710CDT TFT color LCD is backlit supporting 800 x 600 pixels with a built-in display controller. The controller incorporates functions of the Video Graphics Array (VGA) and Super VGA (SVGA) for external displays.
  • Page 14 Fluorescent Lamp (FL) Inverter Board for 710CDT The FL inverter board supplies a high frequency current to light the LCD’s Fluorescent Lamp. Specifications for the FL inverter are listed in Table 1-5. Table 1-5 FL inverter board specifications for 710CDT color LCD Status Item...
  • Page 15 Figure 1-9 720CDT color LCD Table 1-6 720CDT color LCD specifications Item Specifications Number of Pixels (pixels) 1024 x 768 Dot pitch (mm) 0.24 x 0.24 Display area (mm) 245.76 (W) x 184.32 (H) Contrast 150:1 FL current (mA) 6.0/4.0/3.6/2.4* (Bright/Semi-bright) 1-15 710CDT/720CDT...
  • Page 16 *NOTE: FL currents at power on are: Bright Semi-bright AC adapter connected 6 mA 3.6 mA AC adapter not connected 4 mA 2.4 mA (The settings at power on do not change even if the AC adapter connection changes.) 1-16 710CDT/720CDT...
  • Page 17: Power Supply

    Name voltage tolerance current Ripple (mA) (mV) System logic, FDD, HDD +5.0 ±5 3,400 Display panel, FL and PC card CPU, RAM, PC card +3.3 ±5 3,800 Flash ROM, PC card B12V +12.0 ±5 System logic +5.0 ±5 1-17 710CDT/720CDT...
  • Page 18 Quick Battery Charge When the AC adapter is attached, there are two types of quick charge: quick charge 1 when the system is powered off, and quick charge 2 when the system is powered on. 1-18 710CDT/720CDT...
  • Page 19 A full charge is detected only when the battery is charging at quick charge and is detected under any of the following conditions: 1. The current in the battery charging circuit drops under the fixed limit. 2. The charging time exceeds the fixed limit. ° 3. The battery’s temperature is over 60 1-19 710CDT/720CDT...
  • Page 20 Table 1-12 lists the charging time and data preser- vation period for the RTC battery. Table 1-12 RTC battery charging/data preservation time Status Time Charging Time (Power On) 40 hours Data preservation period (full charge) 1 month 1-20 710CDT/720CDT...
  • Page 21: Troubleshooting

    PS/2 or compatible keyboard PS/2 or compatible mouse Multimedia sound system with line-in and line-out ports Headphone Microphone Speakers with amplifier External FDD attachment Lens cleaner for CD-ROM laser pickup lens Toshiba-EMI Test Disc TDY-03 for CD-ROM Drive 2 - 1 710CDT/720CDT...
  • Page 22: Troubleshooting Flowchart

    ® Verify with the customer that Toshiba MS-DOS or Toshiba Windows 95 is installed on the hard disk. Non-Toshiba operating systems can cause the computer to malfunc- tion. Make sure all optional equipment is disconnected from the computer. Make sure the floppy disk drive is empty.
  • Page 23 PCB procedures outlined in Section 2.4. If an error is detected on the floppy disk test, execute the floppy disk drive trouble- shooting procedures outlined in Section 2.5. 2 - 3 710CDT/720CDT...
  • Page 24 If an error is detected on the CD-ROM test, execute the CD-ROM drive trouble- shooting procedures outlined in Section 2.9. If an error is detected on the modem test, execute the modem troubleshooting procedures outlined in Section 2.10. 2 - 4 710CDT/720CDT...
  • Page 25: Power Supply Troubleshooting

    Flashes yellow The power switch is pressed on when the battery level is low. Doesn't light Any condition other than those above. AutoResume Off will be executed soon. AutoResume Off has already been executed. 2 - 5 710CDT/720CDT...
  • Page 26 An error code begins with the least significant digit. Example: Error code 12h (error codes are displayed in a hexadecimal format.) Check 1 Convert the DC IN icon blink pattern into the hexadecimal error code and compare it to the following tables. 2 - 6 710CDT/720CDT...
  • Page 27 B3V voltage is over the maximum allowed limit. B3V voltage is below the minimum allowed limit. B3V does not start when the power supply is turned on. B3V is below the minimum allowed limit during suspend. 2 - 7 710CDT/720CDT...
  • Page 28 Chapter 4, Replacement Procedures. If the connector is not physically damaged, go to the following step: Check the Desk Station V Plus for malfunctions. Refer to the Desk Station V Plus maintenance manual for details. If the error still exists, go to Procedure 5. 2 - 8 710CDT/720CDT...
  • Page 29 Any of the connectors may be disconnected. Perform Check 1. Check 1 Make sure the AC adapter's cable and AC power cord are firmly plugged into the DC IN 15 V socket and wall outlet. If these cables are connected correctly, go to Check 2. 2 - 9 710CDT/720CDT...
  • Page 30 Check 5 Check 1 Make sure the AC adapter's cable and AC power cord are firmly plugged into the DC IN socket and wall outlet. If these cables are connected correctly, replace the AC power cord and AC adapter. 2-10 710CDT/720CDT...
  • Page 31 Check 1 Replace the power supply board with a new one. If the power supply is still not functioning properly, perform Check 2. Check 2 Replace the system board with a new one. 2-11 710CDT/720CDT...
  • Page 32 BIOS ROM. The IRT tests each IC on the system board and initializes it. 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 or Toshiba Windows 95 is properly loaded, go to Procedure 3. Check 1 If any one of the following error messages display, press the F1 key (as the mes- sage instructs).
  • Page 33 DMAC #2 ERROR (16) PIC #1 ERROR (17) PIC #2 ERROR (18) KBC ERROR (19) HDC ERROR (20) HDD #0 ERROR (21) HDD #1 ERROR (22) NO FDD ERROR (23) FDC ERROR (24) TIMER INTERRUPT ERROR (25) RTC UPDATE ERROR 2-13 710CDT/720CDT...
  • Page 34 IRT test ends. For example, when the printer port LED displays 1F and halts, the IRT test has already completed the Display initialization. In this case, the IRT indicates an error has been detected during the system memory test. 2-14 710CDT/720CDT...
  • Page 35 EXTENDED MEMORY ERROR EXTENDED MEMORY PARITY ERROR DMA page register test DMA PAGE REGISTER ERROR DMAC test DMAC #X ERROR DMAC initialization — PIC test PIC #X ERROR Mouse initialization — KBC initialization KBC ERROR Boot password — 2-15 710CDT/720CDT...
  • Page 36 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: Make sure the computer is in resume mode. Plug the printer port LED into the computer's parallel port. Turn on the computer. 2-16 710CDT/720CDT...
  • Page 37 Diagnostics, for more information on how to perform these tests. System test Memory test Printer test ASYNC test Real Timer test NDP test Expansion test Sound test Modem test If an error is detected during any of these tests, go to Procedure 5. 2-17 710CDT/720CDT...
  • Page 38 Replace the modem board with a new one. If the problem still exists, go to Check 6. Check 6 Replace the system board with a new one. NOTE: Refer to Chapter 4 for instructions on how to remove and replace each of the above items. 2-18 710CDT/720CDT...
  • Page 39 If any other errors occur while executing the FDD diagnostics test, go to Check 1. Table 2-5 FDD error code and status (1/2) Code Status Bad command Address mark not found Write protected Record not found Media removed on dual attach card DMA overrun error DMA boundary error CRC error FDC error 2-19 710CDT/720CDT...
  • Page 40 Make sure the FDD cable is firmly connected to the external FDD port. FDD module System board Attachment case If this cable is disconnected, connect it to the system unit and repeat Procedure 2. If the FDD is still not functioning properly, perform Check 5. 2-20 710CDT/720CDT...
  • Page 41 Chapter 4, Replacement Procedures. If the FDD is still not functioning properly, perform Check 6. Check 6 Replace the system board with a new one following the steps outlined in Chapter 4, Replacement Procedures. 2-21 710CDT/720CDT...
  • Page 42: Hard Disk Drive Troubleshooting

    If MS-DOS 6.22 and Windows for Workgroups is selected, use the Mas- ter Diskette Creator (MDC) utility in the Toshiba Utility folder to back up the preinstalled software. After backing up the preinstalled software, use the BACKUP command in the Toshiba Companion Utility to back up the entire disk, including the user's files.
  • Page 43 Procedure 1 Partition Check Insert the Toshiba MS-DOS system disk into the disk drive, 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 44 Check 1. If Not Used has not been selected, go to Check 4. Check 4 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...
  • Page 45 HDC overrun (DRQ) DMA boundary error Bad sector error Bad track error ECC error ECC recover enable HDC error Seek error Time out error Drive not ready Undefined error Write fault Status error Access time out error Data compare error 2-25 710CDT/720CDT...
  • Page 46 Replace the flexible cable with a new one following the instructions outlined in Chapter 4, Replacement Procedures. If the HDD is still not functioning properly, perform Check 3. Check 3 Replace the system board with a new one following the instructions outlined in Chapter 4, Replacement Procedures. 2-26 710CDT/720CDT...
  • Page 47: Keyboard Troubleshooting

    Chapter 4, Replacement Procedures for more information. If the keyboard is still not functioning properly, perform Check 3. Check 3 The keyboard controller on the system board may be damaged. Replace the system board with a new one. Refer to Chapter 4, Replacement Procedures for more information. 2-27 710CDT/720CDT...
  • Page 48: Display Troubleshooting

    Figure 2-3. Any of these cables may be discon- nected. Disassemble the display unit and check the cable connections shown in Figure 2-3. Refer to Chapter 4, Replacement Procedures, for more information about how to disassemble the computer. 2-28 710CDT/720CDT...
  • Page 49 Replace the FL inverter board with a new one and test the display again. If the problem still exists, perform Check 3. Check 3 Replace the LCD module with a new one and test the display again. If the problem still exists, perform Check 4. 2-29 710CDT/720CDT...
  • Page 50 Check 5 Replace the display cable with a new one and test the display again. If the problem still exists, perform Check 6. Check 6 The system board may be damaged. Replace the system board with a new one. 2-30 710CDT/720CDT...
  • Page 51 The CD-ROM drive Diagnostic Test program is stored on the computer's Diagnostics Disk. Insert a test CD (Toshiba-EMI Test Disc TDY-03) into the CD-ROM drive. Insert the Diag- nostics disk into the computer’s floppy disk drive, turn on the computer, and run the test. Refer to Chapter 3, Tests and Diagnostics, for more information about the diagnostics test proce- dures.
  • Page 52 Chapter 4. If the CD-ROM drive is still not functioning properly, perform Check 5. Check 5 Replace the system board with a new one following the steps outlined in Chapter 4. 2-32 710CDT/720CDT...
  • Page 53 Make sure DAA board PJ1 is connected firmly to the modem I/F board PJ1 and that the modem I/F board PJ2 is connected firmly to the system board PJ605. DAA board PJ1 Modem I/F board PJ605 System board 2-33 710CDT/720CDT...
  • Page 54 Replace the modem I/F board with a new one following the steps outlined in Chapter 4. If the DAA board is still not functioning properly, perform Check 4. Check 4 Replace the system board with a new one following the steps outlined in Chapter 4. 2-34 710CDT/720CDT...
  • Page 55: The Diagnostic Test

    Diagnostic Disk and consists of 23 programs grouped into the Service Program Module (DIAGNOSTICS menu) and the Test Program Module (DIAGNOSTIC TEST menu). NOTES: The Diagnostic Test programs for the 710CDT/720CDT computer, the Enhanced Port Replicator II, and the Desk Station V Plus are different. Be sure to use the correct test program for each device.
  • Page 56 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) A CD test media (Toshiba-EMI test disk TDY-03, and music CD for the CD-ROM test) External CRT (all tests) PS/2 or compatible keyboard (all tests)
  • Page 57: Executing The Diagnostic Test

    Executing the Diagnostic Test Toshiba MS-DOS is required to run the DIAGNOSTICS program. To start the program follow the steps listed below: Insert the Diagnostics Disk into the computer’s floppy disk drive and turn on the computer. (The Diagnostics Disk contains the MS-DOS boot files.)
  • Page 58: Table Of Contents

    TOSHIBA personal computer xxx DIAGNOSTICS version X.XX (c) copyright TOSHIBA Corp. 19XX DIAGNOSTIC TEST menu: 1 - SYSTEM TEST 2 - MEMORY TEST 3 - KEYBOARD TEST 4 - DISPLAY TEST 5 - FLOPPY DISK TEST 6 - PRINTER TEST...
  • Page 59 Selecting NO for ERROR STOP keeps the test running even if an error is found. Table 3-1 in Section 3.3 lists the function of each test on the subtest menu. Table 3-2 in Section 3.18 lists the error codes and error status for each error. 3 - 5 710CDT/720CDT...
  • Page 60: Subtest Names

    Gradation for VGA Gradation for LCD Gradation & Mode test for VGA All dot on/off for LCD “H” pattern display Sequential read Sequential read/write Random address/data Write specified address Read specified address PRINTER Ripple pattern Function Wraparound 3 - 6 710CDT/720CDT...
  • Page 61 DS bus wraparound (Not used) RGB monitor ID (Not used) Joystick (Not used) Joystick wraparound (Not used) SOUND CODEC (Recording/Playback) FM-Synthesizer SIN-Wave Playback CODEC (Line In/Out) CD-ROM Sequential read Read specified address Random address/data Playback Music MODEM Modem 3 - 7 710CDT/720CDT...
  • Page 62: System Test

    If the data indicates the connector is open or shorted, it displays an error message. Subtest 06 Quick charge This subtest determines whether the battery pack can be quick charged. Refer to Chapter 2 for a list of result codes. 3 - 8 710CDT/720CDT...
  • Page 63: Memory Test

    This subtest writes constant data and address data to extended memory (maxi- mum address 100000h), then reads new data and compares the result with the original data. The constant data is FFh, AAh, 55h, and 00h. 3 - 9 710CDT/720CDT...
  • Page 64 ('7000':'Program' size to '7000':'7FFF' (32 KB)) to check the hit-miss ratio (on/off status) for L2 cache memory. One test takes three seconds. Number of misses < Number of hits → OK Number of misses ≥ Number of hits → Fail 3-10 710CDT/720CDT...
  • Page 65: Keyboard Test

    The Ins, Caps Lock, Num Lock, Scroll Lock, Alt, Ctrl, Left Shift, and Right Shift keys are displayed in reverse video when pressed. The scan codes, character codes, and key top names are listed in Appendix D. 3-11 710CDT/720CDT...
  • Page 66 If an IPS switch is pressed, the <BUTTON> display alternates between black and white. Also, the parameters appear on the right side of the display. If two IPS switches are pressed at the same time, the subtest menu is displayed. 3-12 710CDT/720CDT...
  • Page 67: Display Test

    X-RATE:0000h Y-RATE:0000h < BUTTON > << PRESS BUTTON1 + BUTTON2 THEN END >> There are eight directions of arrow marks as shown below. When a button is pressed, the display alternates as shown below. Display Test < > 3-13 710CDT/720CDT...
  • Page 68 To exit this subtest and return to the DISPLAY TEST menu, press Ctrl + Break. Subtest 03 Gradation for LCD This subtest displays eight colors: red, semi-red, green, semi-green, blue, semi-blue, white, and semi-white. Each color is displayed full screen for three seconds. Subtest 04 Gradation & Mode test for VGA 3-14 710CDT/720CDT...
  • Page 69 3, 12, 13, 43, 52 1024 x 768 3, 12, 13, 45 The display below appears on the screen when this subtest is executed. Pressing Enter changes the size of the displayed image. Pressing Enter changes the size of the displayed image. 3-15 710CDT/720CDT...
  • Page 70 This subtest displays an all-white screen (all dot on) for three seconds then an all-black screen (all dot off) for three seconds. To exit this subtest and return to the DISPLAY TEST menu, press Ctrl + Break. Subtest 06 "H" pattern display 3-16 710CDT/720CDT...
  • Page 71 This subtest displays a full screen of "H" patterns. HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH To exit this subtest and return to the DISPLAY TEST menu, press Ctrl + Break. 3-17 710CDT/720CDT...
  • Page 72: Floppy Disk Test

    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. 3-18 710CDT/720CDT...
  • Page 73 Subtest 01. The data is then read and compared to the original data. Subtest 04 Write Specified Address This subtest writes specified data to a specified track, head, and address. Subtest 05 Read Specified Address This subtest reads data from a specified track, head, and address. 3-19 710CDT/720CDT...
  • Page 74: Printer Test

    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: 3-20 710CDT/720CDT...
  • Page 75 The printer wraparound connector (34M741986G01) wiring diagram is shown in Appendix F. This subtest checks the output and bidirectional modes of the data control and status lines through the printer wraparound connector. 3-21 710CDT/720CDT...
  • Page 76: Async Test

    "receive" (Subtest 03). The wiring diagram for the RS- 232-C direct cable is shown in Appendix F. This subtest sends 20h through 7Eh data to the receive side, then receives the sent data and compares it to the original data. 3-22 710CDT/720CDT...
  • Page 77 SIR port. Subtest 07 SIR point to point (Receive) This subtest, used with Subtest 06 described above, receives the data from the send side, then sends the received data through the SIR port. 3-23 710CDT/720CDT...
  • Page 78: Hard Disk Test

    Diskette Creator (MDC) utility located in the Toshiba Utility folder to back up the preinstalled software. Now use the BACKUP command from the Toshiba Companion Utility to back up the entire disk, including the user's files. If Windows 95 is selected, use the Microsoft Create System Disks Tools (MSCSD.EXE) located in the System Tools folder to back up the...
  • Page 79 • Forward sequential • Reverse sequential • Random Subtest 03 Random Address/Data This subtest writes random data to random addresses on the HDD cylinder, head and sector. This data is then read and compared to the original data. 3-25 710CDT/720CDT...
  • Page 80 This subtest writes specified 2-byte data to all of the cylinders on the HDD. Subtest 10 W-R-C specified address This subtest writes data to a specified cylinder and head on the HDD, then reads the data and compares it to the original data. 3-26 710CDT/720CDT...
  • Page 81: Real Timer Test

    Writes 1-bit of "off" data to address 0Eh through 80h Writes the data pattern AAh and 55h to the RTC 114-byte memory (address 0Eh to 7Fh) The subtest then reads and compares this data with the original data. To exit, press Ctrl + Break . 3-27 710CDT/720CDT...
  • Page 82 Current date : 12-31-1995 Current time : 23:59:58 Pressing Enter displays the following: Current date : 01-01-1996 Current time : 00:00:00 PRESS [Enter] KEY TO EXIT TEST Press Ctrl + Break to exit. 3-28 710CDT/720CDT...
  • Page 83: Ndp Test

    The NDP test contains one subtest that tests the computer's NDP functions. Subtest 01 This test checks the following functions of the coprocessor: Control word Status word Addition Multiplication Press Ctrl + Break to exit. 3-29 710CDT/720CDT...
  • Page 84: Expansion Test

    Good Contents 00001 Address line 00001 REG#, CE#1, CE#2 nn=A0, 90, 80, 00 00002 Data line ww=write data, rr=read data 00003 –– –– Speaker line 00004 40, 80 Wait line (40<xx<80) 00005 Other lines (BSY#, BVD1) nn=21, 00 3-30 710CDT/720CDT...
  • Page 85: Sound Test

    Load the file AD1848L.COM. Connect a sound source such as a CD player or stereo to the line-in port. Connect an output device such as an amplifier for the internal speaker or a radio/cassette player to the line-out port. 3-31 710CDT/720CDT...
  • Page 86 After making the connections, a dialog box will display. Press Enter to play a recorded sound. About three seconds after the recorded sound is played, the dialog box will display again. 3-32 710CDT/720CDT...
  • Page 87: Cd-Rom Test

    The CD-ROM Test contains four subtests that test the computer's CD-ROM functions. NOTE: Make sure the CD-ROM driver (CDROMDRV.COM) is installed, then insert the test media CD (Toshiba-EMI Test Disk TDY-03) before executing this test.) Subtest 01...
  • Page 88: Modem Test

    NOTE: Before you conduct the Terminal Test, connect the DAA module to a telephone using a modular cable. When you have connected the DAA module to a telephone, test the connection by calling the line from another phone. 3-34 710CDT/720CDT...
  • Page 89 Select the COM port (the same one selected in the Hardware Setup program). The following screen displays: Baud rate (2:300,,4:1200,5:2400,6:9600,7:14400,8:19200,9:38400)? Select the Baud rate and press Enter . The selected test is executed. Function 9 exits this subtest and returns to the SUBTEST menu. 3-35 710CDT/720CDT...
  • Page 90: Error Codes And Error Status Names

    Fault Select Line Out Of Paper Power Off Busy Line 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 3-36 710CDT/720CDT...
  • Page 91 BSY# Line Error BVD1 Line Error No PCMCIA 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 3-37 710CDT/720CDT...
  • Page 92: Hard Disk Test Detail Status

    “0” --- Note used (Corrected data) “1” --- A correctable data error was corrected. “0” --- Not used (Index) “1” --- The Index was sensed. “0” --- Normal (Error) “1” --- The previous command was terminated with an error. 3-38 710CDT/720CDT...
  • Page 93 “1” Illegal command error or a drive status error occurred. TK00 “0” The hard disk has found track 0 during a recalibrate command. (Track 0) “1” The hard disk could not find track 0 during a recalibrate command. —— Not used 3-39 710CDT/720CDT...
  • Page 94: Hard Disk Format

    Diskette Creator (MDC) utility located in the Toshiba Utility folder to back up the preinstalled software. Now use the BACKUP command from the Toshiba Companion Utility to back up the entire disk, including the user's files. If Windows 95 is selected, use the Microsoft Create System Disks Tools (MSCSD.EXE) located in the System Tools folder to back up the...
  • Page 95 This option searches the hard disk for bad tracks by reading data to all the tracks on the hard disk. A list of bad tracks is displayed when the program is complete. If an error other than a bad track is detected, the program is automatically terminated. 3-41 710CDT/720CDT...
  • Page 96 3.20.2 Operations 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 command. Refer to the Toshiba MS-DOS manual for more information about using these commands. Selecting 2 and pressing Enter in the DIAGNOSTIC menu, displays the following submenu: DIAGNOSTICS - HARD DISK FORMAT : VX.XX...
  • Page 97 Drive number select (1:#1, 2:#2) ? Interleave number (1 / 1 - 8) ? Press [Cylinder number (dddd)] ? Press [Head number (dd)] ? Press Enter to return to the Hard Disk Format menu. 3-43 710CDT/720CDT...
  • Page 98 To initiate the subtest, enter the drive number at the prompt shown below. Drive number select (1:#1, 2:#2) ? Bad tracks will be displayed in the following format: [[cylinder, head = 0123 03]] Press Enter to return to the Hard Disk Format menu. 3-44 710CDT/720CDT...
  • Page 99: Head Cleaning

    Remove the Diagnostics Disk from the FDD, insert the cleaning disk, and press Enter . When the "cleaning start" message displays, the FDD head cleaning has begun. The display automatically returns to the DIAGNOSTIC menu when the program completes. 3-45 710CDT/720CDT...
  • Page 100: Log Utilities

    001 FDD 01 0000 180 00001 00 00 FDD - TIME OUT ERROR Address Error status Pass count HDC status Subtest number Read data Test name Write data Error count Error status name [[1:Next,2:Prev,3:Exit,4:Clear,5:Print,6:FD Log Read,7:FD Log Write]] 3-46 710CDT/720CDT...
  • Page 101 The 7 key writes the log information to a floppy disk. 3. If an “error retry OK" condition occurs, a capital “R” is placed at the beginning of the error status. It is not, however, added to the error count. 3-47 710CDT/720CDT...
  • Page 102: Running Test

    Select Y or N and press Enter . The following message displays: Serial #A wrap around test (Y/N) ? Selecting Y (yes) executes the ASYNC wraparound test. An RS-232-C wrap- around connector must be connected to the computer's serial port to properly execute this test. 3-48 710CDT/720CDT...
  • Page 103 Select Yes or No, and press Enter . The following message will display: 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 executes continuously. To terminate the program, press Ctrl + Break . 3-49 710CDT/720CDT...
  • Page 104: Floppy Disk Drive Utilities

    FDD and HDD. FORMAT NOTE: This program is only for testing a floppy disk drive. This 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 105 When COPY is selected, the following message displays: FLOPPY DISK FORMAT & COPY : VX.XX Type select (0:2DD-2DD,1:2D-2D,2:2D-2HD,3:2HD-2HD) ? Selecting a media/drive type number will display a message similar to the following one: Insert source disk into drive A: Press any key when ready. 3-51 710CDT/720CDT...
  • Page 106 After selecting the HDD, the display will go to step (f). The following message displays: Format type select (1:2DD, 2:2D, 3:2HD) ? (d) Select a format type. The following message displays: Insert source disk into drive A: Press any key when ready. 3-52 710CDT/720CDT...
  • Page 107 The following message displays: —— Max. address —— [Track ] = 0079 [ Head ] = 01 [Sector] = 09 Track number ?? Set the track number you want to dump. The system will access the disk and dump a list. 3-53 710CDT/720CDT...
  • Page 108: System Configuration

    * - 1 ASYNC ADAPTER * - 1 HARD DISK DRIVE(S) * - 1 PRINTER ADAPTER * - XXXMB + XXXXKB EXTENDED MEMORY * - 1 MATH CO-PROCESSOR Press [Enter] Key Press Enter to return to the DIAGNOSTIC menu. 3-54 710CDT/720CDT...
  • Page 109 (h) Keyboard (i) Boot Priority (j) Pointing Devices (k) PC Card Controller Mode Display I/O Ports (a) Serial Port (b) Infrared Port (c) Built-in Modem Port (d) Parallel Port (e) Sound System PCI Bus Drives I/O Floppy Disk I/O 3-55 710CDT/720CDT...
  • Page 110: Accessing The Setup Program

    Select items Space, BkSp : Change values PgDn, PgUp : Change pages Esc: Exit without saving Home: Set default values End: Save changes and Exit NOTE:The Panel Power On/Off item appears only when the computer is in Resume mode. 3-56 710CDT/720CDT...
  • Page 111 To show the factory preset configuration, press Home . To accept the default settings, press End and then Y. NOTE: When you execute the default settings, the following settings are not changed: HDD Mode Password Sound System: I/O Address, Interrupt Level, DMA Write Policy 3-57 710CDT/720CDT...
  • Page 112 Displays 256 colors out of 262,144 colors. (This (720CDT) value cannot be changed.) 16M colors Displays up to 16,777,216 colors simultaneously. (710CDT) (This value cannot be changed.) Power On Display Selects the display when booting the computer. Internal/External Selects an external CRT if one is connected, otherwise it selects the internal LCD (Default).
  • Page 113 Standard IDE Select this mode when using Novell NetWare ® UNIX . When this mode is selected, up to 504MB is logically available even though the disk’s capacity is larger than 504MB. Not used HDD is not installed. 3-59 710CDT/720CDT...
  • Page 114 Low Power) is disabled and the user-preferred parameters become effective. The default setting in the subwindows depends on the Battery Save Mode: Low Power (Long Life) or Full Power (Normal Life). For details, see Battery Save Options below. 3-60 710CDT/720CDT...
  • Page 115 Disables the HDD automatic power off function. 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. 3-61 710CDT/720CDT...
  • Page 116 This option lets you choose between AutoResume and boot mode. You can also set this option using hot keys. AutoResume is effective with either the internal LCD or with an external monitor. Boot Turns on boot mode (Default). Resume Turns on the AutoResume feature. 3-62 710CDT/720CDT...
  • Page 117 Disabled, the computer will be powered on at the same time every day. Press ↓ to move the cursor to the right and ↑ to move the cursor to the left when you set the date and time. 3-63 710CDT/720CDT...
  • Page 118 LOW BATTERY Alarm Enabled Panel Close Alarm Enabled Enabled Enables the feature (Default). Disabled Disables the feature. System Beep Use this feature to enable or disable the system beep. Enabled Enables the feature (Default). Disabled Disables the feature. 3-64 710CDT/720CDT...
  • Page 119 Keyboard Int Keyboard Key Layout = Normal External Keyboard "Fn" key equivalent = Disabled Int Keyboard layout This option lets you select the arrangement of the Caps Lock, Ctrl and Alt keys according to the following illustrations: 3-65 710CDT/720CDT...
  • Page 120 If the PS/2 mouse is connected to the computer when you turn on the power, the PS/2 mouse is enabled and the AccuPoint is disabled. Otherwise, the AccuPoint is enabled (Default). Simultaneous Enables both the AccuPoint and PS/2 mouse. 3-66 710CDT/720CDT...
  • Page 121 COM level Interrupt level I/O address COM1 3F8H (Serial port default) COM2 2F8H COM3 3E8H COM3 3E8H COM3 3E8H COM4 2E8H COM4 2E8H COM4 2E8H Not used (Disables port) Others (Others settings made automatically by plug-and- play operating systems) 3-67 710CDT/720CDT...
  • Page 122 This option allows you to set the COM level for the Modem port. The Modem port interrupt request level (IRQ) and I/O port base address for each COM level is shown below: NOTE: If an internal modem (optional in some markets) is not installed, this selection does not display. 3-68 710CDT/720CDT...
  • Page 123 1, 2 or 3. The default is 3. LPT setting Interrupt level I/O address DMA Channel LPT 1 378H 3 (Default) LPT 2 278H LPT 3 3BCH Not Used (Parallel port default) Others (Others settings made automatically by plug-and- play operating systems) 3-69 710CDT/720CDT...
  • Page 124 Joystick I/O Address 200H WSS I/O address Sets the WSS I/O address from among the following settings: 534h (Default) , 608h, E84h, F44h SBPro I/O address Sets the SBPro I/O address from among the following settings: 220h (Default) , 240h 3-70 710CDT/720CDT...
  • Page 125 Not Used (Default) , 330H/IRQ5, 330H/IRQ7, 330H/IRQ9, 330H/IRQ11, 330H/IRQ15 Joystick I/O address You cannot change this value. NOTE: If you set the Playback and Record option to the same channel, the Record option will display Same as Playback. 3-71 710CDT/720CDT...
  • Page 126 Secondary IDE (170H/IRQ15) Selectable Bay CD-ROM. Setting for the CD-ROM (external Selectable Bay) Secondary IDE (170H/IRQ15) Desk Station V Plus Selectable Bay CD-ROM. Not used Disables the selected CD-ROM. Other setting are automatically made by plug-and-play operating systems. 3-72 710CDT/720CDT...
  • Page 127 Floppy disk I/O Displays the address, internal level and channel settings for the diskette drive. (3F2H/IRQ6/CH2) The FDD is ready for use. Others Other setting made automatically by plug- and play operating system. Not used Disables the diskette drive. 3-73 710CDT/720CDT...
  • Page 128 DAA module Display Assembly, Jack Display Mask FL Inverter Board Board, and Modem Board LCD Module IPS (FLXIP*) Board, RTC TFT Fluorescent Battery, and Backup Battery Lamp (FL) Unit Power supply Microphone (FLXPS*) Board System (FLXSY*) Board 4 - 1 710CDT/720CDT...
  • Page 129: Safety Precautions

    DANGER: 1. Always use the lithium ion battery pack or backup battery that is authorized by Toshiba or compatible with the unit. Since other battery packs have different specifications, they may be incompatible with the unit and may burst or explode. Heating or disassembling the battery pack could cause leakage of alkaline solution.
  • Page 130: Before You Begin

    The computer contains many sharp edges and corners, so be careful not to injure yourself. After you have replaced an FRU, make sure the computer is functioning properly by performing the appropriate test on the FRU you have fixed or replaced. 4 - 3 710CDT/720CDT...
  • Page 131: Disassembly Procedures

    FRU. After installing an FRU in the computer, confirm that the FRU and the computer are functioning properly. 4 - 4 710CDT/720CDT...
  • Page 132: Tools And Equipment

    Overtightening can damage components and screws; undertightening can result in electrical shorts or other damage if screws or components become loose. 0.22 N·m (2.2 kgf·cm) M2.5 0.36 N·m (3.5 kgf·cm) FDD 0.22 N·m (2.2 kgf·cm) HDD 0.3 N·m (3.1 kgf·cm) or less 4 - 5 710CDT/720CDT...
  • Page 133: Battery Pack

    Figure 4-1 Removing the battery NOTE: For environmental reasons, do not throw away a spent battery pack. Please return spent battery packs to Toshiba. Remove the battery cover. Push up slightly as you slide the cover past the unlock position.
  • Page 134: Installing The Battery Pack

    WARNING: The battery is a lithium ion battery. The battery can explode if not properly replaced, used, handled, or disposed of. Use only batteries recommended by Toshiba as replacements. Turn off the power to the computer, then disconnect the AC adapter and all external cables connected to the computer.
  • Page 135: Optional Memory Module

    Grasp the memory card on the right edge toward the connector, or if a plastic tab is present, lift up on the plastic tab to disengage the connectors, then grasp the module by the edges and remove it. 4 - 8 710CDT/720CDT...
  • Page 136 Secure the module to the brace with two M2x10 screws. Fold down the plastic tab, if it is present, and lay the memory slot cover in place. Secure it with two M2x3 silver screws. Install the battery pack as described in Section 4.2. 4 - 9 710CDT/720CDT...
  • Page 137: Optional Pc Card

    Remove the battery pack as described in Section 4.2. Open the PC slot cover. Figure 4-4 Removing the lower PC card Press the eject button for the upper and/or lower card. Grasp the PC card and remove it. 4-10 710CDT/720CDT...
  • Page 138 Insert the PC card. Press gently to ensure a firm connection. Figure 4-5 Installing the lower PC card Close the PC slot cover. Install the optional memory module and battery pack as described in Sections 4.3 and 4.2. 4-11 710CDT/720CDT...
  • Page 139 Grasp the FDD and pull it out. Figure 4-6 Removing the FDD Remove six M2x6 screws. Turn the FDD over and release two latches securing the upper plastic cover. Turn it back over and lift off the cover. 4-12 710CDT/720CDT...
  • Page 140 Figure 4-7 Removing the FDD screws Lift off the plate, unseat the flexible cable connector from the lower plastic cover, and lift out the FDD. Figure 4-8 Removing the plate 4-13 710CDT/720CDT...
  • Page 141 Set the upper plastic cover in place and while holding the plate in place, snap the two latches closed and secure six M2x6 screws. Turn the computer upside down. Make sure that the LED indicator cover is facing up, insert the FDD into the computer, and gently press until it locks into place. 4-14 710CDT/720CDT...
  • Page 142 Close the LED indicator cover. Slide the cover to the right to engage the latches. Figure 4-10 Installing the FDD Install the optional memory module, optional PC card, and battery pack as described in Sections 4.4, 4.3, and 4.2. 4-15 710CDT/720CDT...
  • Page 143 Slide the LED indicator cover to the left to free it from the latches. Rotate the cover up. Pull the release handle to pop the drive out slightly. Grasp the drive and pull it out. Figure 4-11 Removing the CD-ROM drive 4-16 710CDT/720CDT...
  • Page 144 Remove four M2x3 screws and two M2.5x6 screws securing the frame to the CD- ROM drive. Figure 4-12 Removing the CD-ROM screws Slide the drive partially out of the frame. Remove the drive from the cover and cable cover, then disconnect the cable connector. Figure 4-13 Removing the CD-ROM 4-17 710CDT/720CDT...
  • Page 145 Close the LED indicator cover. Slide the cover to the right to engage the latches. Figure 4-14 Installing the CD-ROM drive Install the optional PC card, optional memory module, and battery pack as described in Sections 4.4, 4.3, and 4.2. 4-18 710CDT/720CDT...
  • Page 146 Figure 4-15 Removing the HDD Peel off the VOID seal, and remove four flat M3x4 screws securing the cover to the pack. Slide the cover forward slightly (about 2 cm) and lift it off. Figure 4-16 Removing the HDD screws 4-19 710CDT/720CDT...
  • Page 147 Turn the computer upside down, slide the LED indicator cover to the left, and rotate the cover up. Insert the HDD, VOID label side up, and press to ensure a firm connection. Install the optional PC card, optional memory module, and battery pack as described in Sections 4.4 back through 4.2. 4-20 710CDT/720CDT...
  • Page 148 Figure 4-18 Removing screws from the back of the computer Lift up slightly on the upper cover at the back of the computer so it can easily clear the audio jacks. Open the display panel and lay the display back fully. 4-21 710CDT/720CDT...
  • Page 149 Remove one left M2.5x6 and one right M2.5x4 screw securing the metal brace near the keyboard and AccuPoint mouse connector, then remove the brace. Remove one M2.5x6 screw securing the display ground wire and metal cover, then lift out the cover. Figure 4-20 Removing the metal brace and cover 4-22 710CDT/720CDT...
  • Page 150 Seat the metal cover and secure it and the display ground wire with one M2.5x6 screw. Secure the metal keyboard brace to the keyboard with one M2.5x6 screw and one M2.5x4 screw. Seat the Volume knob and white plastic washer, then replace the tape over the display cables. 4-23 710CDT/720CDT...
  • Page 151 Secure four M2.5x4 silver screws on the back of the computer. Replace the right and left connector covers on the back of the computer. Install the HDD, CD-ROM drive or FDD, optional memory module, optional PC card, and battery pack as described in Sections 4.7 back through 4.2. 4-24 710CDT/720CDT...
  • Page 152 Carefully remove the DAA module lower cover. Remove two M2.5x4 silver screws securing the DAA module jack cover and remove the jack cover. Figure 4-22 Removing the lower cover screws Remove two M2.5x4 screws securing the DAA module. Pull out the DAA module. 4-25 710CDT/720CDT...
  • Page 153 Figure 4-24 Removing the DAA module metal cover screws Remove the DAA module plastic upper cover by removing the centered latches. Separate the DAA board from the lower plastic cover. 4-26 710CDT/720CDT...
  • Page 154 Seat the jack cover and secure it with two M2.5x4 silver screws. Replace the DAA module cover. Install the upper cover and keyboard, HDD, CD-ROM drive or FDD, optional memory module, optional PC card, and battery pack as described in Sections 4.8 through 4.2. 4-27 710CDT/720CDT...
  • Page 155 Remove one silver M2.5x20 screw and one M2.5x4 screw securing the metal cover over the left speaker. The M2.5x4 screw also secures a ground cable. Remove the left speaker. Disconnect the speaker cable from PJ6 on the jack board and remove the right speaker. 4-28 710CDT/720CDT...
  • Page 156 Lift up the keyboard base and display assembly so you can disconnect the display sensor cable from PJ705 on the IPS board. The narrow strings at the sides of the keyboard base can be easily broken, so be careful when handling them. 4-29 710CDT/720CDT...
  • Page 157 Carefully rotate the keyboard base about 90 degrees counterclockwise and slip the video cable out of the slot on the keyboard base. Lift off the keyboard base and display assembly. Figure 4-29 Removing the keyboard base and display assembly 4-30 710CDT/720CDT...
  • Page 158 Figure 4-30 Removing the metal cover Disconnect the jack board (PJ201) from the modem board (PJ3) to remove the jack board. Be careful to note the position of the mylar covering on the jack board. Figure 4-31 Disconnecting the jack board 4-31 710CDT/720CDT...
  • Page 159 Figure 4-32 Removing the modem board Disconnect the video cable from PJ603 on the system board. Disconnect the fan cable from PJ16 on the system board. Figure 4-33 Disconnecting the video cable and fan cable Remove the keyboard base and display assembly. 4-32 710CDT/720CDT...
  • Page 160 Secure the LCD cable brace with two M2.5x6 screws. Set the volume control knob in place. Secure one M2.5x4 screw and one silver M2.5x20 screw on the metal cover over the left speaker. The M2.5x4 screw also secures a ground cable. Close the display. 4-33 710CDT/720CDT...
  • Page 161 M2x3 screws in the selectable bay, and three M2.5x20 silver screws in the computer base. Install the DAA module, upper cover and keyboard, HDD, CD-ROM drive or FDD, optional memory module, optional PC card, and battery pack as described in Sections 4.9 through 4.2. 4-34 710CDT/720CDT...
  • Page 162 4.11 IPS Board, RTC Battery, and Backup Battery WARNING: If you replace the RTC battery or sub-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 163 Seat the backup battery, then carefully route the cable and connect it to PJ140. Seat the RTC battery and route the cable. Secure the batteries with tape and press the rubber bar in place to secure the battery cables. Seat the IPS board. 4-36 710CDT/720CDT...
  • Page 164 Connect the drive connector flexible cable to PJ701 and close the pressure connector. Install the display assembly, jack board, modem board, DAA module, upper cover and keyboard, HDD, CD-ROM drive or FDD, optional memory module, optional PC card, and battery pack as described in Sections 4.10 back through 4.2. 4-37 710CDT/720CDT...
  • Page 165: Power Supply Board

    PJ11 on the system board, and remove the power supply board (directing pressure near the AC jack). Be sure to note how the selectable bay connector tabs are routed on top of the power supply board. Figure 4-36 Removing the power supply board 4-38 710CDT/720CDT...
  • Page 166 Install the IPS board, RTC battery and backup battery, display assembly, jack board, modem board, DAA module, upper cover and keyboard, HDD, CD-ROM drive or FDD, optional memory module, optional PC card, and battery pack as described in Sections 4.11 back through 4.2. 4-39 710CDT/720CDT...
  • Page 167: System Board

    PJ604 on the system board, or lift the pressure connectors to quickly remove them, and then remove the selectable bay connector. Lift out the plastic brace for the HDD connector. Lift the pressure connectors and disconnect the flexible cable from PJ602 on the system board. 4-40 710CDT/720CDT...
  • Page 168 M2.5x6 screw in the frame hole on the other side of the HDD slot. Finally, remove two M2.5x6 screws in the selectable bay slot. Figure 4-39 Removing the frame and system board screws 4-41 710CDT/720CDT...
  • Page 169 Remove one M2.5x6 screw securing the system board to the frame and separate the system board from the frame. Figure 4-41 Separating the system board, heat sink, and frame 4-42 710CDT/720CDT...
  • Page 170 Install the power supply board, IPS board, RTC battery and backup battery, display assembly, jack board, modem board, DAA module, upper cover and keyboard, HDD, CD-ROM drive or FDD, optional memory module, optional PC card, and battery pack as described in Sections 4.12 back through 4.2. 4-43 710CDT/720CDT...
  • Page 171 Install the system board, power supply board, IPS board, RTC battery and backup battery, display assembly, jack board, modem board, DAA module, upper cover and keyboard, HDD, CD-ROM drive or FDD, optional memory module, optional PC card, and battery pack as described in Sections 4.13 back through 4.2. 4-44 710CDT/720CDT...
  • Page 172: Display Mask

    Carefully insert your fingers between the mask and the LCD panel and pry open the latches. Start with five latches across the top of the display mask. Continue releasing the mask along the sides (four latches on each side), then at the bottom (four latches). 4-45 710CDT/720CDT...
  • Page 173 Secure the cover with two M2.5x6 screws at the hinges. Attach the two mask seals to cover the screws. Install the optional memory module, optional PC card, and battery pack as described in Sections 4.4, 4.3, and 4.2. 4-46 710CDT/720CDT...
  • Page 174: Fl Inverter Board

    CN1 and the HV cable from CN2. Note: You may wish to place a binder and form pad under the display to provide additional stability while performing these steps. Figure 4-45 Removing the FL inverter board 4-47 710CDT/720CDT...
  • Page 175 Replace the FL inverter board and secure it with one M2.5x6 screw. Install the display mask, optional memory module, optional PC card, and battery pack as described in Sections 4.15, 4.4, 4.3, and 4.2. 4-48 710CDT/720CDT...
  • Page 176: Lcd Module

    Remove the tape, then carefully rotate the LCD module from right to left out of the display cover and disconnect the LCD cable from CN1 on the LCD module. Note the position of the noise-reduction gasket. Figure 4-46 Removing the LCD module 4-49 710CDT/720CDT...
  • Page 177 Seat the LCD module and then secure it to the LCD cover with four M2.5x6 screws. Install the FL inverter board, display mask, optional memory module, optional PC card, and battery pack as described in Sections 4.16, 4.15, 4.4, 4.3, and 4.2. 4-50 710CDT/720CDT...
  • Page 178 Remove one M2.5x6 ground screw in the top cover cable channel and disconnect the FL Inverter cable from PJ703 on the IPS board. Remove the tape from the back cover and covering the cable, and lift out the FL inverter cable. Figure 4-47 Removing the ground cable screws 4-51 710CDT/720CDT...
  • Page 179 Secure the two ground cables to the right hinge with two M2.5x6 screws. Install the display mask, upper cover, optional memory module, optional PC card, and battery pack as described in Sections 4.17, 4.16, 4.15, 4.4, 4.3, and 4.2. 4-52 710CDT/720CDT...
  • Page 180 Removing the Display Cover To remove the display cover, follow the steps below and refer to Figure 4-49. Carefully remove the mask covering one M2.5x4 screw on the left side of the display cover. Remove the display cover. 4-53 710CDT/720CDT...
  • Page 181 Route the cable and seat the microphone, then connect the cable to PJ207 on the jack board. Install the display mask, optional memory module, optional PC card, and battery pack as described in sections 4.10, 4.4, 4.3, and 4.2. 4-54 710CDT/720CDT...
  • Page 182: Appendix A Handling The Lcd Module

    Also, the panel's polarized surface is easily scarred, so be careful when handling it. 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. 710CDT/720CDT...
  • Page 183 Be sure to quickly wipe off any liquid. Glass is used in the panel, so be careful not to drop it or let it strike a hard object, which could cause breakage or cracks. 710CDT/720CDT...
  • Page 184 Do not expose the module to direct sunlight or strong ultraviolet rays for long periods. Do not store the module at temperatures below specifications. Cold can cause the liquid crystals to freeze, lose their elasticity or otherwise suffer damage. 710CDT/720CDT...
  • Page 185 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 panels' polarization. 710CDT/720CDT...
  • Page 186 Appendix B Board Layouts System Board Front View Figure B-1 System board layout (front) B - 1 710CDT/720CDT...
  • Page 187 System Board Back View Figure B-2 System board layout (back) B - 2 710CDT/720CDT...
  • Page 188 IC12 to IC15 System Memory IC36 Keyboard Controller IC57, IC58 L2 Cache Memory (SRAM) IC60 Sound Controller IC600 System Controller GA IC603 I/O Controller GA IC604 PC Card Controller GA IC620 TAGRAM IC628 Multiplex GA Ext. FDD Connector B - 3 710CDT/720CDT...
  • Page 189 Table B-3 IPS board ICs and connectors (front) Mark Number Name IC700 IPS Controller PJ700 IPS I/F Connector PJ701 Membrane switch Connector PJ702 Keyboard Connector PJ703 FL Inverter Connector PJ704 RTC Battery Connector PJ705 Panel Sensor Connector B - 4 710CDT/720CDT...
  • Page 190 Modem I/F Board View Figure B-4 Modem I/F board layout Table B-4 Modem I/F board ICs and connectors Mark Number Name Modem I/F GA Modem Controller SRAM VALV34 DSP1634 DAA I/F Connector System-Modem I/F Connector Modem-Jack I/F Connector B - 5 710CDT/720CDT...
  • Page 191 Jack Board Front View Figure B-5 Jack board layout (front) Table B-5 Jack board connectors Mark Number Name PJ202 Line-Out Jack PJ203 Headphone Jack PJ204 Line-In Jack PJ205 Microphone Jack B - 6 710CDT/720CDT...
  • Page 192: Pin Assignments

    MD42;100 MD46;100 MD43;100 MA47;100 MD16;100 MD20;100 MD17;100 MD21;100 MD18;100 MD22;100 MD19;100 MD23;100 MD24;100 MD28;100 MD25;100 MD29;100 MD26;100 MD30;100 MD27;100 MD31;100 MD00;100 MD04;100 MD01;100 MD05;100 MD02;100 MD06;100 MD03;100 MD07;100 MD08;100 MD12;100 MD09;100 MD13;100 MD10;100 MD14;100 MD11;100 MD15;100 C - 1 710CDT/720CDT...
  • Page 193 MD54;100 MD51;100 MD55;100 MD56;100 MD60;100 MD57;100 MD61;100 MD58;100 MD62;100 MD59;100 MD63;100 CAS1;011 CAS0;011 CAS3;011 CAS2;011 CAS5;011 CAS4;011 CAS7;011 CAS6;011 WEC;001 RAS2;001 RAS4;001 RAS3;001 RAS5;001 MA00;111 MA01;111 MA02;111 MA03;111 MA04;111 MA05;111 MA06;111 MA07;111 MA09;111 MA08;111 MA11;111 MA10;111 C - 2 710CDT/720CDT...
  • Page 194 BD04;100 BD05;100 BD06;100 BD07;100 BCE1;000 BA10;100 BOE;000 BA11;100 BA09;100 BA08;100 BA13;100 BA14;100 BBWE;000 BIREQ;000 MCVCCB MCVP1B BA16;100 BA15;100 BA12;100 BA07;100 BA06;100 BA05;100 BA04;100 BA03;100 BA02;100 BA01;100 BA00;100 BD00;100 BD01;100 BD02;100 BIIS16;000 BCD1;000 BD11;100 BD12;100 BD13;100 BD14;100 C - 3 710CDT/720CDT...
  • Page 195 BCD2;000 AAD03;100 AAD04;100 AAD05;100 AAD06;100 AAD07;100 ACE1;000 AA10;100 AOE;000 AA11;100 AA09;100 AA08;100 AA13;100 AA14;100 AAWE;000 AIREQ;000 MCVCCA MCVP1A AA16;100 AA15;100 AA12;100 AA07;100 AA06;100 AA05;100 AA04;100 AA03;100 AA02;100 AA01;100 AA00;100 AAD00;100 AAD01;100 AAD02;100 AIIS16;000 ACD1;000 AAD11;100 AAD12;100 C - 4 710CDT/720CDT...
  • Page 196 Pin No. Signal Name Pin No. Signal Name AAD13;100 AAD14;100 AAD15;100 ACE2;000 AVS1;100 AIORD;000 AIOWR;000 AA17;100 AA18;100 AA19;100 AA20;100 AA21;100 MCVCCA MCVP1A AA22;100 AA23;100 AA24;100 AA25;100 AVS2;100 ARESET;100 AWAIT;000 AINPCK;000 AREG;000 ASPKR;000 ATSCHG;000 AAD08;100 AAD09;100 AAD10;100 ACD2;000 C - 5 710CDT/720CDT...
  • Page 197 (B3V pull-up) DSTOP;000 DTRDY;000 DCBE2;000 DCBE0;000 DIOCHK;000 (B3V pull-up) DINTC;000 DINTB;000 DINTA;000 DPREQ;000 DPGNT;000 MIDIIN;100 MIDIOT;100 IFVCC IFVCC IFVCC IFVCC SNDMUT;000 SPKDIS;100 MICDIS;100 LINEIR;100 LINEIR;000 CDR;000 CDR;100 CDL;100 MICR;000 MICR;100 MICL;000 LINEOR;100 LINEOL;000 LINEOR;000 LINEOL;100 MICL;100 C - 6 710CDT/720CDT...
  • Page 198 ACK;000 STROB;000 DAD07;100 DAD05;100 DAD03;100 DAD01;100 DRST;000 DDEVSL;000 DPAR;100 (B3V pull-up) DIRDY;000 DCBE3;000 DCBE1;000 DIRQCK;100 DIRQD;000 DINTD;000 DGNT;000 DFRAME;000 IDENSL;001 EXKBCK;100 EXKBDT;100 MOSCK;100 DOCKEN;000 MOSDT;100 PCM2SP;100 LINEIL;000 LINEIL;000 DOCSMI;100 CDL;000 EJCTRQ;100 JOYDTO;100 JOYDT2;100 JOYDT3;100 JOYDT5;100 JOYDT7;100 C - 7 710CDT/720CDT...
  • Page 199 SLIN;000 PDB06;100 PE;100 DAD31;100 DAD17;100 DAD16;100 DAD28;100 DAD15;100 DAD14;100 DAD25;100 DAD13;100 DAD12;100 DAD22;100 DAD11;100 DAD10;100 DAD19;100 DAD09;100 DREQ;000 DCD1;100 SCL;100 RD1;000 SDA;100 DOCRI;100 CTS1;100 DSCREQ;000 DSCGNT;000 DTR1;100 DCPCLR;100 MNTID0;100 MNTID1;100 DSKCHG;000 MNTID2;100 JOYDT1;100 MNTID3;100 JOYDT4;100 JOYDT6;100 C - 8 710CDT/720CDT...
  • Page 200 Pin No. Signal Name Pin No. Signal Name SELCT;100 BUSY;100 PDB07;100 PDB02;100 PCONF;100 DOCPWN;100 DAD30;100 DAD29;100 DAD27;100 DAD26;100 DAD24;100 DAD23;100 DAD21;100 DAD20;100 DAD18;100 DSCLK;100 RI1;100 DSR1;100 RTS1;100 SD1;000 SIRRXP;100 SIRTXP;000 HSYNC;100 OVSYNC;100 RED;100 LGREN;100 BLUE;100 DOCDT2;000 C - 9 710CDT/720CDT...
  • Page 201 PJ9 Parallel I/F Connector (25-pin) Table C-6 Parallel I/F connector pin assignments (25-pin) Pin No. Signal Name Pin No. Signal Name STROB;000 PDB00;100 PDB01;100 PDB02;100 PDB03;100 PDB04;100 PDB05;100 PDB06;100 PDB07;100 ACK;000 BUSY;100 PE;100 SELCT;100 AUTFD;000 ERROR;000 PINIT;000 SLIN;000 C-10 710CDT/720CDT...
  • Page 202 R102P;100 R102M;100 CK10P;100 CK10M;100 R200P;100 R200M;100 R201P;100 R201M;100 R202P;100 R202M;100 CK20P;100 CK20M;100 PJ703 FL Inverter I/F Connector (8-pin) Table C-8 FL Inverter I/F connector pin assignments (8-pin) Pin No. Signal Name Pin No. Signal Name DSPV DSPV BRIGHT;100 C-11 710CDT/720CDT...
  • Page 203 Table C-10 RTC battery connector pin assignments (3-pin) Pin No. Signal Name Pin No. Signal Name RTCBAT C.11 PJ705 Panel Sensor Connector (2-pin) Table C-11 Panel sensor connector pin assignments (2-pin) Pin No. Signal Name Pin No. Signal Name PNLOFF;000 C-12 710CDT/720CDT...
  • Page 204 Table C-12 HDD connector pin assignments (50-pin) Pin No. Signal Name Pin No. Signal Name HDIN;000 HDDLED SA04;100 SA05;100 SA02;100 SA00;100 HDDIRG;100 SA01;100 IOCHRY;100 IOCS16;000 FIOW;000 FIOR;000 SA15;100 SD00;100 SA14;100 SD01;100 SA13;100 SD02;100 SA12;100 SD03;100 SA11;100 SD04;100 SA10;100 SD05;100 SA09;100 SD06;100 SA08;100 SD07;100 ISARST;002 C-13 710CDT/720CDT...
  • Page 205 TRK0;000 SA08;100 SD07;100 SA09;100 SD06;100 WGATE;000 SA10;100 SD05;100 SA11;100 SD04;100 STEP;000 SA12;100 SD03;100 SA13;100 SD02;100 DIR;000 SA14;100 SD01;100 SA15;100 SD00;100 IFMO;000 CDDRQ;100 FIOW;010 FIOR;010 IOCHRY;100 RDATA;000 CDDACK;000 CDRIRQ;100 IOCS16;000 SA01;100 WDATA;000 SA00;100 FREADY;000 SA02;100 SA06;100 IFSL;000 SA07;100 INDEX;000 C-14 710CDT/720CDT...
  • Page 206 Table C-13 Selectable Bay I/F connector pin assignments (80-pin) (2/2) Pin No. Signal Name Pin No. Signal Name MBSTS0;100 INCDLG CDRLED;000 INCDR;100 MBSTS1;100 INCDRG IDENSL;100 WP;000 IHMED;000 ISARST;010 C-15 710CDT/720CDT...
  • Page 207 C-16 710CDT/720CDT...
  • Page 208 Appendix D Keyboard Scan/Character Codes Table D-1 Scan codes (Set 1 and 2) (1/3) Code set 1 Code set 2 Keytop Make Break Make Break Note ‘ ~ 7 & BkSp 29 (42) Caps Lock 710CDT/720CDT...
  • Page 209 E0 F0 11 E0 F0 70 E0 F0 71 ♦ E0 F0 6B Home E0 F0 6C E0 F0 69 E0 F0 75 ¬ E0 F0 72 PgUp E0 F0 7D PgDn E0 F0 7A ∅ E0 F0 74 710CDT/720CDT...
  • Page 210 The Fn key does not generate a code by itself. This key corresponds to key No. 42 in the 102-key model. Refer to Table D-6, scan codes with Ctrl key. Refer to Table D-7, scan codes with Alt key. 710CDT/720CDT...
  • Page 211 E0 F0 7D E0 F0 12 PgDn E0 2A E0 51 E0 D1 E0 AA E0 12 E0 7A E0 F0 7A E0 F0 12 ∅ E0 2A E0 4D E0 CD E0 AA E0 12 E0 74 E0 F0 74 E0 F0 12 710CDT/720CDT...
  • Page 212 E0 2A E0 37 E0 B7 E0 AA E0 12 E0 7C E0 F0 7C E0 F0 12 Ctrl* E0 37 E0 B7 E0 7C E0 F0 7C Shift* E0 37 E0 B7 E0 7C E0 F0 7C Alt* F0 B4 710CDT/720CDT...
  • Page 213 Table D-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. 710CDT/720CDT...
  • Page 214 Appendix E Key Layout United States (US) Keyboard Figure E-1 US keyboard United Kingdom (UK) Keyboard Figure E-2 UK keyboard 710CDT/720CDT...
  • Page 215 German (GR) Keyboard Figure E-3 GR keyboard French (FR) Keyboard Figure E-4 FR keyboard 710CDT/720CDT...
  • Page 216 Spanish (SP) Keyboard Figure E-5 SP keyboard Italian (IT) Keyboard Figure E-6 IT keyboard 710CDT/720CDT...
  • Page 217 Scandinavian (SC) Keyboard Figure E-7 SC keyboard Swiss-German (SL) Keyboard Figure E-8 SL keyboard 710CDT/720CDT...
  • Page 218: Appendix F Wiring Diagrams

    (4) DTR Figure F-2 RS-232-C wraparound connector RS-232-C Direct Cable (9-Pin to 9-Pin) (3) TD (4) DTR (7) RTS (5) GND (2) RD (1) CD (6) DSR (8) CTS (9) RI Figure F-3 RS-232-C direct cable (9-pin to 9-pin) 710CDT/720CDT...
  • Page 219 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) 710CDT/720CDT...
  • Page 220 When the BIOS message is displayed, insert the diagnostics disk into the FDD, then press the Enter key to start the BIOS rewrite program. When the process is completed, eject the diagnostics disk and restart the system. 710CDT/720CDT...
  • Page 221 710CDT/720CDT...
  • Page 222 710CDT/720CDT...

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