TOSHIBA 620CT Addendum to the 610CT Maintenance Manual PN: 620-9400 CARM-B960289-B00
Copyright ©1996 by Toshiba Corporation. All rights reserved. Under the copyright laws, this manual cannot be reproduced in any form without the prior written permission of Toshiba. No patent liability is assumed with respect to the use of the information contained herein. PORTÉGÉ 620CT, Addendum to the 610 CT Maintenance Manual First edition November 1996 Disclaimer The information contained in this manual is subject to change without notice.
About this Addendum This addendum is a supplement to the Toshiba 610CT Maintenance Manual. The information contained in this publication covers features, field replaceable units, and disassembly/ reassembly of the Toshiba 620CT computer. For information on troubleshooting, tests and diagnostics, board layout, pin assignments, etc., please refer to the 610CT Maintenance Manual. SAFETY PRECAUTIONS Four types of messages are used in this manual to bring important information to your attention.
Tab le of Contents able Chapter 1 Hardware Overview 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Features ..................................................................................................................... 1-1 System Unit Block Diagram ..................................................................................... 1-4 3.5-inch External Floppy Disk Drive ........................................................................ 1-8 2.5-inch Hard Disk Drive ..........................................
Appendices Appendix A Appendix B Appendix C Appendix D Appendix E Appendix F Appendix G Handling the LCD Module* Board Layout* Pin Assignments* Keyboard Scan/Character Codes* Key Layouts* Wiring Diagrams* BIOS Rewrite Programs* *See the 610CT Maintenance Manual 620 Maintenance Manual Addendum v
Chapter 1 Har dware Over vie w Hard Overv ew
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Chapter 1 Contents 1.1 Features ..................................................................................................................... 1-1 1.2 System Unit Block Diagram ..................................................................................... 1-4 1.3 3.5-inch External Floppy Disk Drive (FDD) ............................................................. 1-8 1.4 2.5-inch Hard Disk Drive (HDD) .............................................................................
1.1 Features The 620CT uses extensive Large Scale Integration (LSI), and Complementary Metal-Oxide Semiconductor (CMOS) technology to provide minimum size and weight, low power usage, and high reliability. This computer incorporates the following features and benefits: ❑ Microprocessor Uses an Intel Pentium processor 100 MHz with VRT (Voltage Reduction Technology) that operates at 2.9/3.3 volts. The math co-processor and 16 KB cache memory are integrated into Pentium. ❑ Disk storage An internal 1.
❑ Parallel port Can be used to connect a Centronics compatible printer or other parallel device. The port supports ECP (Extended Capabilities Port) conforming to IEEE·1284. ❑ Serial port The serial controller is 16550UART compatible. This standard, 9-pin serial port can be used to connect such serial devices as a serial printer, serial mouse, or external modem. ❑ Port replicator port A port replicator port which enables connection of a port replicator or external monitor adapter.
The computer is shown in Figure 1-1. Figure 1-1 Computer The system configuration is shown in Figure 1-2.
1.2 System Unit Bloc k Dia gram Block Diagram Figure 1-3 is a block diagram of the system unit.
The system board is composed of the following major components: ❑ One Intel Pentium-100 MHz with VRT 64-bit microprocessor Intel Pentium processor operates at 100 MHz and 2.9 volts and 3.3 volts. It incorporates a math coprocessor and a 16KB cache. ❑ Standard RAM 8 MB, four 1Mx16-bit EDO DRAM chips 3.
❑ System Controller Gate Array (SCPCNT-GA) This gate array has the following functions: CPU control SMI control CPU clock control Memory control 64-bit bus memory control 32-bit bus memory control Bus control 64-bit data bus <==> 32-bit data bus 32-bit local bus control Address latch control I/O register control Processing speed control ❑ ISA Bus Controller Gate Array (SISCNT-GA) This gate array has the following functions: Bus control 32-bit data bus <==> 16-bit data bus ISA bus interface control ISA bus a
❑ Keyboard Controller (KBC) One M38802M4 chip is used. This KBC includes the keyboard scan controller and keyboard interface controller. The KBC controls the internal keyboard, external keyboard, AccuPoint, and PS/2 mouse. ❑ AccuPoint Controller (IPSC) One U43SC10 chip is used. 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 bytes of memory are used for the calendar and clock.
1.3 3.5-inc h External Flopp y Disk Drive (FDD) 3.5-inch Floppy The 3.5-inch external 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 FDD is shown in Figure 1-4. Figure 1-4 3.5-inch external FDD The specifications for the FDD are listed in Table 1-1. Table 1-1 3.
1.4 2.5-inc h Har d Disk Drive (HDD) 2.5-inch Hard The HDD is a random access non-volatile storage device. It has a non-removable 1.3 billion byte (1.26GB), 2.5-inch magnetic disk and mini-winchester type magnetic heads. The HDD is shown in Figure 1-5. Figure 1-5 2.5-inch HDD Specifications for the HDD are listed in Table 1-2. Table 1-2 2.5-inch HDD specifications Items (MK1301MAV) Storage capacity (GB) Formatted 1.
1.5 Keyboar d yboard The 82-(USA) or 84-(European) key keyboard is mounted on the system unit. The keyboard is connected to the keyboard controller on the system board through a 25-pin flat cable. The 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. See Appendix E of the Portégé 610CT Maintenance Manual for optional keyboard configurations.
1.6 TFT Color LCD The TFT Color Liquid Crystal Display (LCD) contains an LCD module, a Fluorescent Lamp (FL), and an FL inverter board. 1.6.1 LCD Module The TFT color LCD supports 800 x 600 pixels with an internal display controller and 256K colors for graphics and characters. This controller includes the functions of Video Graphics Array (VGA) and Super VGA (SVGA) for display. The LCD receives 9-bit data signals, data enable signals, and a shift clock for data transmission.
1.6.2 Fluorescent Lamp (FL) Inverter Board The FL inverter board supplies high frequency current to light the LCD Fluorescent Lamp. The specifications for the FL inverter are listed in Table 1-4. Table 1-4 FL inverter board specifications Item Input Output Specifications Voltage (VDC) Power (W) Voltage (Vrms) Current (mA) 4 to 5.5 4.8 1,100 4.6/4.0/2.8/2.4* (Bright/Semi-bright) *NOTE: The FL currents at power on are: Bright Semi-bright AC adapter connected 4.6 mA 2.
1.7 Power Suppl y Supply The power supply provides five kinds of voltages to the system board. The power supply has one microprocessor that operates at 500 KHz and contains the following functions: 1. Determines if the AC adapter or battery is connected to the computer. 2. Controls the LED icon and speaker. 3. Determines when the battery is fully charged. 4. Controls power on/off. 5. Searches for low/high voltage at power I/O areas. 6. Calculates the remaining battery capacity. 7.
1.8 Batteries The computer has three types of batteries: ❑ Main battery pack ❑ Backup battery ❑ Real Time Clock (RTC) battery Battery specifications are listed in Table 1-6. Table 1-6 Battery specifications Battery name Material Output voltage Capacity Main battery Lithium-Ion 10.8 V 4,000 mAH Backup battery Nickel Metal Hydride 6.0 V 110 mAH RTC battery Nickel Metal Hydride 3.6 V 30 mAH 1.8.
1.8.2 Battery Charging Control Battery charging is controlled by a power supply microprocessor that is mounted on the power supply. The microprocessor controls whether the charge is on or off and detects a full charge when the AC adapter and battery are attached to the computer. The system charges the battery using quick charge or trickle charge.
1.8.3 Backup Battery The backup battery maintains data for resume. The power source used to back-up the resume data is determined according to the following priority: AC adapter > Main battery > Backup battery The backup battery is charged by the main battery or AC adapter when the system is powered on. Table 1-8 shows the charging time and data preservation period of the backup battery.
Chapter 4 Replacement Procedures
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Chapter 4 Contents 4.1 General ...................................................................................................................... 4-1 Safety Precautions..................................................................................................... 4-2 Before You Begin ..................................................................................................... 4-3 Disassembly Procedures .......................................................................................
Installing the RTC and Backup Batteries ................................................................ 4-22 4.9 Membrane Switch ................................................................................................... 4-23 Removing the Membrane Switch ............................................................................ 4-23 Installing the Membrane Switch .............................................................................. 4-23 4.10 Sound Board ...............................
4.18 Microphone ............................................................................................................. 4-40 Removing the Microphone...................................................................................... 4-40 Installing the Microphone ....................................................................................... 4-40 4.19 Display Cable ..........................................................................................................
Figure 4-27 Removing the FL inverter board ................................................................. 4-34 Figure 4-28 Removing the display module screws ......................................................... 4-36 Figure 4-29 Removing the LCD ..................................................................................... 4-37 Figure 4-30 Removing the FL unit screws ..................................................................... 4-38 Figure 4-31 Removing the FL unit ...........
4.1 General This section explains how to disassemble the computer and replace Field Replaceable Units (FRUs). It may not be necessary to remove all the FRUs in order to replace one. The chart below is a guide to which FRUs need to be removed in order to remove others. Always start by removing the battery pack, then follow the lines on the chart to determine which FRU you must remove next in order to repair the one you think is causing the computer to operate improperly.
Safety Precautions Before you begin disassembly, read the following safety precautions and observe them carefully as you work. DANGER: 1. Always use the lithium ion battery pack or back-up 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. Do not heat or disassemble the battery pack, as leakage of alkaline solution could result.
Before You Begin Look over the procedures in this section before you begin disassembling the computer. Familiarize yourself with the disassembly and reassembly steps. Begin each procedure by removing the AC power cord and the battery pack as instructed in section 4.2, Battery Pack: 1. Do not disassemble the computer unless it is operating abnormally. 2. Use only the correct and approved tools. 3.
Disassembly Procedures The computer has three basic types of cable connectors: ❑ Pressure Plate Connectors ❑ Normal Pin Connectors ❑ Flexible Cable Connectors To disconnect a Pressure Plate connector, lift up the tabs on either side of the plastic pressure plate and slide the cable out of the connector. To connect the cable to a Pressure Plate connector, make sure the pressure plate is fully lifted and slide the cable into the connector.
Tools and Equipment The use of ElectroStatic Discharge (ESD) equipment is very important to prevent or minimize ESD event damage to the unit under repair. Proper use of these devices will increase the success rate of your repairs and lower the cost for damaged or destroyed parts.
4.2 The Batter yP ac k Battery Pac ack Removing the Battery Pack To remove the battery pack, follow the steps below and refer to Figures 4-1 and 4-2. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Close the display if it is open. 3. Turn the computer upside down. 4.
Installing the Battery Pack To install the battery pack, follow the steps below and refer to Figures 4-3 back through 4-1. WARNING: The battery is a lithium ion battery and can explode if not properly replaced, used, handled, or disposed of. Use only batteries recommended by Toshiba as replacements. NOTE: Check the battery terminals before you install the battery. If they are dirty, wipe them clean with a dry cloth. 1. Place the right end of the battery pack at the red line marked on an alignment guide.
4.3 Memor y Module Memory Removing the Memory Module To remove the memory module from the computer, follow the steps below and refer to Figures 4-4 and 4-5. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack as described in Section 4.2. 3. Turn the computer upside down. 4. Remove two M2x4 silver screws securing the memory module socket cover. 5.
6. Remove two M2x4 silver screws securing the module to a brace at the center of the module and set them aside. 7. Insert a thin object under the upper edge of the module and lift up to disengage the connector, then grasp the module by the edges and remove it. NOTE: Some memory modules have a plastic tab. If so, simply pull up on the tab to disengage the connector.
Installing the Memory Module To install the memory module in the computer, follow the steps below and refer to Figures 4-6 back through 4-4. 1. Position the connector on the bottom of the module over the corresponding connector on the computer (align the holes on the side of the module over the screw holes on the brace). Place your fingers above the connector and press firmly but gently to assure a solid connection. The module should be seated level. Figure 4-6 Inserting the memory module 4-10 2.
4.4 PC Car d Card Removing the PC Card To remove the PC card from the computer, follow the steps below and refer to Figure 4-7. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack as described in Section 4.2. 3. Open the cover to the PC card slot. 4. Pull out the eject button for the card you want to remove and press the button. The card will pop out slightly. Figure 4-7 Removing the PC card 5.
Installing the PC Card To install the PC card in the computer, follow the steps below and refer to Figure 4-8: 1. Insert the PC card as shown in Figure 4-8. When the card is almost fully seated, you will feel some resistance. Press gently to assure a firm connection, but do not force the card into position. Figure 4-8 Installing the PC card 4-12 2. When the card is fully seated, an eject button will pop out; the top button for the top connector and the bottom button for the bottom connector. 3.
4.5 K eyboar d yboard Removing the keyboard To remove the keyboard, follow the steps below and refer to Figures 4-9 to 4-12. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, memory module, and PC card as described in Sections 4.2, 4.3, and 4.4. 3. Use a case separator to release 12 latches that secure the keyboard cover. Begin with the latches at the front.
4. Remove one M2x4 screw with washer in front of the keyboard. Figure 4-10 Removing the keyboard screw 5. Insert a thin object between the keyboard and the top cover to lift up the keyboard. Lift up slightly so the extensions at the back of the keyboard clear the corresponding holes on the top cover. Do not remove the keyboard cable.
6. Disconnect the AccuPoint cable from PJ2 and the keyboard cable from PJ7. Figure 4-12 Removing the keyboard cable 7. Lift out the keyboard. Installing the keyboard To install the keyboard, follow the steps below and refer to Figures 4-12 back through 4-9. 1. Connect the AccuPoint cable to PJ2 and the keyboard cable to PJ7. Make sure the pressure plate connectors are secure. 2. Replace the keyboard.
4.6 Har d Disk Drive (HDD) Hard Removing the HDD To remove the HDD, follow the steps below and refer to Figures 4-13 and 4-14. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, memory module, PC card, and keyboard as described in Sections 4.2 through 4.5. 3. Remove one M2x4 screw securing the HDD bracket. 4. Lift up on the plastic tab on the HDD bracket and lift up the HDD. 5.
6. Remove four M3x4 flat-head screws securing the bracket to the HDD and remove the bracket. Figure 4-14 Removing the HDD Installing the HDD To install the HDD, follow the steps below and refer to Figures 4-14 and 4-13. 1. Seat the HDD in its bracket. 2. Secure the HDD to the bracket with four M3x4 flat-head screws. 3. Seat the HDD into the bottom cover, making sure to align the connectors. 4. Press the HDD gently to secure the connection. 5. Secure the HDD bracket with one M2x4 screw. 6.
4.7 Top Co ver and Displa y Assemb ly Cover Display Assembl Removing the Top Cover and Display Assembly To remove the top cover and display assembly, follow the steps below and refer to Figures 4-15 to 4-17. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, memory module, PC card, keyboard, and HDD as described in Sections 4.2 through 4.6. 3. Close the display and turn the computer upside down.
6. Turn the computer back over and open the display panel. Remove the tape, then disconnect the following cables: LED from PJ9, display from PJ12, speaker from PJ18, sensor from PJ17, and microphone from PJ2. Figure 4-16 Releasing the top cover latches 7. Stand the computer on end as shown in Figure 4-17 and release nine latches securing the top cover. Begin with the latches along the front edge as shown. Figure 4-17 Separating the top cover and display assembly 8.
Installing the Top Cover and Display Assembly To install the top cover and display assembly, follow the steps below and refer to Figures 4-17 back through 4-15: 4-20 1. Set the top cover in place and secure nine latches. Be sure to keep the speaker cable to the right of the speaker. 2. Connect the following cables: LED to PJ9, display to PJ12, speaker to PJ18, sensor to PJ17, and microphone to PJ2. 3. Replace the tape. 4. Close the display and turn the computer upside down. 5.
4.8 R TC and Bac kup Batteries Backup Removing the RTC and Backup Batteries To remove the RTC and backup batteries, follow the steps below and refer to Figure 4-18. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, memory module, PC card, keyboard, top cover and display assembly as described in Sections 4.2 through 4.7. 3. Peel off the tape securing the backup battery cable. 4.
Installing the RTC and Backup Batteries DANGER: Always use an RTC battery or backup battery that is authorized by Toshiba or compatible with the unit. Since other batteries have different specifications, they may be incompatible with the unit, and may burst or explode. To install the RTC and backup batteries, follow the steps below and refer to Figure 4-18. 4-22 1. Connect the backup battery cable to PJ21 on the power supply board and replace the battery. 2.
4.9 Membrane Switc h Switch Removing the Membrane Switch To remove the membrane switch, follow the steps below and refer to Figure 4-19. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, memory module, PC card, keyboard, HDD, top cover and display assembly, RTC battery, and backup battery as described in Sections 4.2 through 4.8. 3. Remove the tape from the membrane switch cable. 4.
4.10 Sound Boar d Board Removing the Sound Board To remove the sound board, follow the steps below and refer to Figure 4-20. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, memory module, PC card, keyboard, HDD, top cover and display assembly, RTC battery, backup battery, and membrane switch as described in Sections 4.2 through 4.9. 3. Remove one M2x4 screw. 4. Remove the sound board cover.
Installing the Sound Board To install the sound board, follow the steps below and refer to Figure 4-20. 1. Connect the sound board cable to PJ20. When you connect the sound board, make sure it lies flat, then press evenly above the connector. 2. Seat the sound board and the sound board cover. 3. Secure them both with one M2x4 screw. 4.
4.11 Power Suppl y Boar d Supply Board Removing the Power Supply Board To remove the power supply board, follow the steps below and refer to Figure 4-21. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, memory module, PC card, keyboard, HDD, top cover and display assembly, RTC battery, backup battery, membrane switch, and sound board as described in Sections 4.2 through 4.10. 3.
Installing the Power Supply Board To install the power supply board, follow the steps below and refer to Figure 4-21. 1. Seat the power supply board in the bottom cover. 2. Connect the power supply cable to PJ14 on the system board. WARNING: Make sure there is no dust or other debris on the connectors. Dust could cause a short or otherwise damage the boards. 3. Replace the sound board support. 4.
4.12 System Boar d Board Removing the System Board To remove the system board, follow the steps below and refer to Figure 4-22. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, memory module, PC card, top cover and display assembly, HDD, RTC battery, backup battery, membrane switch, sound board, and power supply board as described in Sections 4.2 through 4.11. 3. Remove five M2x6 screws. 4.
Installing the System Board To install the system board, follow the steps below and refer to Figure 4-22. 1. Replace the switch button. 2. Seat the system board. 3. Be sure the system shield assembly is in place. 4. Secure the system board with five M2x6 screws. 3. Replace the power supply board, sound board, membrane switch, RTC battery, backup battery, top cover and display assembly, HDD, keyboard, PC card, memory module, and battery pack as described in Sections 4.11 back through 4.2.
4.13 LED Boar d and Speaker Board Removing the LED Board and Speaker To remove the LED board and speaker, follow the steps below and refer to Figure 4-23 and 4-24. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, memory module, PC card, keyboard, HDD, and top cover and display assembly as described in Sections 4.2 through 4.7. 3. Remove two M2x4 screws. 4.
Installing the LED Board and Speaker To install the LED board and speaker, follow the steps below and refer to Figure 4-24 and 4-23. 1. Put the protective rubber cover on the speaker. 2. Place the speaker in the speaker assembly and secure two latches. 3. Place the LED board in the assembly and secure four latches. 4. Seat the assembly in the bottom cover. 5. Secure two M2x4 screws. 6.
4.14 Displa y Mask Display Removing the Display Mask To remove the display mask, follow the steps below and refer to Figures 4-25 and 4-26. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, memory module, and PC card as described in Sections 4.2, 4.3, and 4.4. NOTE: You do not have to remove the top cover and display assembly to remove the display mask. 3.
6. Continue around the plastic cover to release four latches on each side and five latches at the bottom. Figure 4-26 Removing the display mask Installing the Display Mask To install the display mask, follow the steps below and refer to Figures 4-26 and 4-25. 1. Set the display mask in place and press firmly to secure the latches. Start with five latches at the bottom, four latches on each side, and six latches at the top. 2. Secure two M2.5x6 screws at the bottom corners of the display cover.
4.15 FL In ver ter Boar d Inver verter Board Removing the FL Inverter Board WARNING: If you have to turn on the power to check the FL inverter during disassembly, never touch the exposed areas that carry high-voltage. To remove the FL inverter board, follow the steps below and refer to Figure 4-27. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2.
Installing the FL Inverter Board To install the FL inverter board, follow the steps below and refer to Figure 4-27. 1. Turn the board over and connect the FL inverter cable to CN1 and the FL cable to CN2. 2. Secure two M2x6 screws on the FL inverter board. Be sure the ground wire is attached to the left screw. NOTE: When you remove the screws, support the back of the display with your hand. 3. Replace the display mask, PC card, memory module, and battery pack as described in Sections 4.4, 4.3, and 4.2.
4.16 TFT Color Displa y Module Display Removing the TFT Color Display Module To remove the TFT color display module, follow the steps below and refer to Figures 4-28 and 4-29. CAUTION: When you remove the FL unit, be careful that dust or other foreign matter does not contaminate the LCD panel. Any contamination can affect the performance of the unit. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2.
5. Carefully disconnect the LCD cable from the display panel. NOTE: When you secure the LCD cable, support the display panel with your hand. Figure 4-29 Removing the LCD Installing the TFT Color Display Module To install the TFT color display module, follow the steps below and refer to Figures 4-29 and 4-28. 1. Connect the LCD cable to CN11. NOTE: When you secure the LCD cable, support the display panel with your hand. 2.
4.17 Fluorescent Lamp Unit (FL) Removing the FL Unit CAUTION: When you remove the FL, be sure no dust or foreign matter contaminates the display panel. To remove the FL, follow the steps below and refer to Figures 4-30 to 4-32. 1. Turn off the power to the computer. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, memory module, PC card, display mask, FL inverter board, and display module as described in Sections 4.2, 4.3, 4.4, 4.
7. Remove the FL unit. Figure 4-31 Removing the FL unit 8. Remove the FL. Figure 4-32 Removing the FL Installing the FL Unit To install the FL, follow the steps below and refer to Figures 4-32 back through 4-30. 1. Seat the FL unit, route the FL cable, and replace the black tape. 2. Place the FL unit cover just to the right of the latches, then slide it to the left to secure it under the latches. Replace two M2x6 flat-head screws. 3.
4.18 Micr ophone Microphone Removing the Microphone To remove the microphone, follow the steps below and refer to Figure 4-33. 1. Turn off the power to the 620CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2 Remove the battery pack, memory module, PC card, display mask, FL inverter board, and display module as described in Sections 4.2 through 4.4, and 4.15 through 4.17. 3. Pinch the microphone cover to free it from two latches, then remove the cover. 4.
4.19 Displa y Cab le Display Cabl Removing the Display Cable To remove the display cable, follow the steps below and refer to Figure 4-34. 1. Turn off the power to the 620CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, memory module, PC card, display mask, FL inverter board, display module, and microphone as described in Sections 4.2 through 4.4, and 4.15 through 4.18. 3. Remove four M2.
1.1 Features The Toshiba 610CT is one of the lightest and most advanced portable computers available. Utilizing advanced technology and high-speed components, the 610CT offers excellent display legibility, battery operation, and IBM PC/AT compatibility. The 610CT system unit has the following features: ❑ Microprocessor A Pentium® Processor 90MHz with Voltage Reduction Technology (VRT) that operates at 90 MHz, 2.9 Volts. ❑ Cache memory A 16 KB cache memory which is stored in the Pentium® Processor.
❑ Personal Computer Memory Card International Association (PCMCIA) card slot Two PCMCIA slots enable you to install an MiNC Toshiba card modem or other industry-standard PCMCIA release 2.01 card. ❑ Parallel port One Centronics compatible parallel interface port. ❑ RS-232-C port One 9-pin serial interface port. ❑ 3.5-inch external FDD port One 3.5-inch external FDD port. ❑ Port replicator port One port replicator port enables connection of an optional port replicator or external monitor adapter.
The 610CT Personal Computer is shown in figure 1-1. Figure 1-1 610CT The 610CT system configuration is shown in figure 1-2.
1.2 System Unit Block Diagram Figure 1-3 is a block diagram of the 610CT system unit.
The 610CT system board has the following major components: ❑ One Intel Pentium-90 MHz with VRT 64-bit microprocessor Intel Pentium processor operates at 90 MHz and 2.9 volts ❑ Standard RAM 8 MB, four 1Mx16-bit chips 3.
❑ System Controller Gate Array (SCPCNT6-GA) This gate array has the following functions: CPU control SMI control CPU clock control Memory control 64-bit bus memory control 32-bit bus memory control Bus control 64-bit data bus <==>32-bit data bus 32-bit local bus control Address latch control I/O register control Processing speed control ❑ ISA Bus Controller Gate Array (SISCNT3-GA) This gate array has the following functions: Bus control 32-bit data bus <==> 16-bit data bus ISA bus interface control ISA bus
❑ Video Controller This video controller controls internal TFT color LCD and external SVGA compatible CRT. ❑ Keyboard Controller (KBC) One M38802M4 chip is used. This KBC includes the keyboard scan controller and keyboard interface controller. The KBC controls the internal keyboard, external keyboard, PS/2 mouse. ❑ Real Time Clock (RTC) One T9934 chip is used. The T9934 has 128 of bytes memory. Fourteen bytes of memory are used for the calendar and clock.
1.3 3.5-inch External Floppy Disk Drive The 610CT 3.5-inch external 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 610CT FDD is shown in figure 1-4. Figure 1-4 3.5-inch external FDD The specifications for the FDD are listed in table 1-1. Table 1-1 3.
1.4 2.5-inch Hard Disk Drive The 720 MB Hard Disk Drive (HDD) is a random access non-volatile storage device. It has a non-removable 2.5-inch magnetic disk and mini-winchester type magnetic heads. The HDD is shown in figure 1-5. Figure 1-5 2.5-Inch HDD Specifications for the HDD are listed in table 1-2. Table 1-2 2.
1.5 Keyboard The 82-(USA) or 84-(European) keyboard is mounted on the 610CT system unit. The keyboard is connected to the keyboard controller on the system board through a 25-pin flat cable. The 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. See Appendix E for optional keyboard configurations.
1.6 TFT Color LCD The TFT Color Liquid Crystal Display (LCD) contains an LCD module, a Fluorescent Lamp (FL), and an FL inverter board. 1.6.1 LCD Module The 610CT TFT color LCD supports 640x480 pixels with an internal display controller and 256K colors for graphics and characters. This controller includes the functions of Video Graphics Array (VGA) and Super VGA (SVGA) for external display. The LCD receives 9-bit data signals, data enable signals, and has a shift clock for data transmission.
1.6.2 Fluorescent Lamp (FL) Inverter Board The FL inverter board supplies high frequency current to light the LCD’s Fluorescent Lamp. The specifications for the FL inverter are described in table 1-4. Table 1-4 FL inverter board specifications Item Input Output 1-12 Specifications Voltage (VDC) 10 Power (W) 3 Voltage (VAC) 1,100 (r.m.s.) Current (mA) 5.
1.7 Power Supply The power supply provides five kinds of voltages to the 610CT system board. The power supply has one microprocessor which operates at 500 KHz and performs the following functions: 1. Determines if the AC adapter or battery is connected to the computer. 2. Detects DC output and circuit malfunctions. 3. Controls the LED icon and speaker. 4. Turns the battery charging system on and off and detects a fully charged battery. 5. Determines if the power can be turned on and off. 6.
1.8 Batteries The 610CT has three types of batteries: ❑ Main battery pack ❑ Backup battery ❑ Real Time Clock (RTC) battery These battery specifications are listed in table 1-6. Table 1-6 Battery specifications Battery name Material Output voltage Capacity Main battery Lithium-Ion 10.8 V 4,000 mAH Backup battery Nickel Metal Hydride 6.0 V 110 mAH RTC battery Nickel Metal Hydride 3.6 V 30 mAH 1.8.
1.8.2 Battery Charging Control Battery charging is controlled by a microprocessor that is mounted on the power supply. The microprocessor controls whether the charge is on or off and detects a full charge when the AC adapter and battery are attached to the computer. The system charges the battery using quick charge or trickle charge. When the AC adapter is attached, there are two types of charge: quick charge when the system is powered off, and trickle charge when the system is powered on.
1.8.3 Backup Battery The backup battery maintains data for AutoResume. The power source used to back-up the AutoResume data is determined according to the following priority: AC adapter > Main battery > Backup battery The backup battery is charged by the main battery or AC adapter when the system is powered on. Table 1-8 shows the charging time and data preservation period of the backup battery.
2.1 Troubleshooting Chapter 2 describes how to determine if a Field Replaceable Unit (FRU) in the 610CT is causing the computer to malfunction. The FRUs covered are: 1. Power Supply 2. System Board 3. Floppy Disk Drive 4. Hard Disk Drive 5. Keyboard 6. Display The Diagnostics Disk operations are described in Chapter 3 and detailed replacement procedures are given in Chapter 4. The following tools are necessary for implementing the troubleshooting procedures: 1. A 610CT Diagnostics Disk 2.
2.2 Troubleshooting Flowchart Use the flowchart in figure 2-1 as a guide for determining which troubleshooting procedures to execute. Before going through the flowchart steps, verify the following: ❑ Ask the user if a password is registered and, if it is, ask him or her to enter the password. If the user has forgotten the password, connect the printer port wraparound board (F31PRT), then turn the POWER switch on. The computer will override the password function by erasing the current password.
Figure 2-1 Troubleshooting flowchart (1/2) 610CT 2-3
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: 2-4 1.
2.3 Power Supply Troubleshooting The power supply controls many functions and components in the 610CT. To determine if the power supply is functioning properly, start with Procedure 1 and continue with the other Procedures as instructed.
Procedure 2 Battery LED Indicator Check The Battery LED indicator shows the battery charging status. The Battery LED, identified by a battery icon on the front of the computer, glows amber when the AC adapter is charging the 610CT battery pack. If the Battery LED indicator glows green, the AC adapter is connected and the battery is fully charged. If the Battery LED indicator glows amber, the AC adapter is connected and the battery is being charged.
Procedure 3 Connection and Replacement Check The power supply board is connected to the system board. This connection may become damaged or disconnected from the system board. Disassemble the 610CT following the steps described in chapter 4, Replacement Procedures, and perform the following checks. Check 1 Make sure the power supply board and system board are firmly connected to each connector.
2.4 System Board Troubleshooting This section describes how to determine if the system board is defective or not functioning properly. Start with Procedure 1 and continue with the other procedures as instructed.
Check 2 If the following error message is displayed on the screen, press any key as the message instructs: WARNING: RESUME FAILURE. PRESS ANY KEY TO CONTINUE. This error message appears when data stored in RAM under the resume function is lost because the battery has become discharged or the system board is damaged. Go to Procedure 3. If any other message appears, perform Check 3.
Check 3 The IRT checks the system board. When the IRT detects an error, the system stops or an error message appears. If one of the following error messages (1) through (7), (9) through (18), (23), or (24) is displayed, replace the system board. If error message (8) is displayed, go to the Keyboard Troubleshooting Procedures in section 2.7. If error message (19) or (20) is displayed, go to the HDD Troubleshooting Procedures in section 2.6.
Procedure 2 Printer Port LED Check on Boot Mode The printer port LED displays the IRT status and test status by turning lights on and off as an eight-digit binary value for boot mode. Figure 2-2 shows the printer port LED. Figure 2-2 Printer port LED To use the printer port LED follow these steps: 1. Turn on the 610CT power, then set to boot mode. 2. Turn off the computer’s power. 3. Plug the printer port LED into the 610CT Printer connector. 4.
Table 2-1 Printer port LED boot mode error status (1/2) Error status Test item 01H Pre-init for warm start test 05H PIT test Message — TIMER CH.2 OUT ERROR PIT ERROR READ DATA = XXH WRITE DATA = XXH 06H PIT initialization 07H PIT function test MEMORY REFRESH ERROR 0AH First 64KB memory test FIRST 64KB MEMORY ERROR 0BH System memory initialization — 0DH Interrupt vector initialization — 15H RTC test RTC ERROR READ DATA = XXH WRITE DATA = XXH 16H CMOS RAM test ****Error in CMOS.
Table 2-1 Printer port LED boot mode error status (2/2) Error status 41H Test item DMAC test Message DMAC #1 ERROR READ DATA = XXXXH WRITE DA = XXXXH DMAC #2 ERROR READ DATA = XXXXH WRITE DATA = XXXXH 42H DMAC initialization 4AH PIC test PIC #1 ERROR READ DATA = XXH WRITE DATA = XXH PIC #2 ERROR READ DATA = XXH WRITE DATA = XXH 54H Keyboard test KEYBOARD ERROR 55H KBC initialization KBC ERROR 5AH Mouse initialization 60H HDD initialization HDC ERROR HDC #0 ERROR HDC #1 ERROR 65H FDD init
Procedure 3 Printer Port LED Check on Resume Mode The printer port LED displays the IRT status and test status by turning lights on and off as an eight-digit binary value for resume mode. To use the printer port LED follow these steps: 1. Turn the computer's power on, then set to resume mode. 2. Turn the computer off. 3. Plug the printer port LED into the printer connector. 4. Turn the computer on. 5. Read the LED status from left to right as you face the back of the computer. 6.
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. 1. 2. 3. 4. 5. 6. 7. System test Memory test Printer test ASYNC test Real Timer test NDP test PCMCIA test If an error is detected during any of these tests, go to Procedure 5. Procedure 5 Replacement Check The system board may be damaged.
2.5 Floppy Disk Drive Troubleshooting This section describes how to determine if the 610CT 3.5-inch external floppy disk drive is functioning properly. If the 3.5-inch external FDD is not connected to the computer, connect it and perform the steps below starting with Procedure 1 and continuing with the other procedures as required.
Procedure 2 Diagnostic Test Program Execution Check The Floppy Disk Drive Diagnostic Test program is stored on the 610CT Diagnostics Disk. After loading Toshiba MS-DOS, run the diagnostic program. Refer to Chapter 3, Tests and Diagnostics, for more information about the diagnostics test procedures. Floppy disk drive test error codes and their status names are described in table 2-3. Make sure the floppy disk in the FDD is formatted correctly and that the write protect tab is disabled.
Procedure 3 Connector Check and Replacement Check The 3.5-inch Floppy Disk Drive is connected to the system board by the FDD cable. This cable may be damaged or disconnected from the system board. Perform the following checks: Check 1 Make sure the FDD cable is firmly connected to the system board. 3.5-inch external FDD System Board 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 2.
2.6 Hard Disk Drive Troubleshooting To determine if the hard disk drive is functioning properly, perform the procedures below starting with Procedure 1. Continue with the other procedures as instructed. Procedure 1: Partition Check Procedure 2: Message Check Procedure 3: Format Check Procedure 4: Diagnostic Test Program Execution Check CAUTION: The contents of the hard disk will be erased when the HDD troubleshooting procedures are executed.
Procedure 2 Message Check When the 610CT HDD does not function properly, some of the following error messages may appear on the display. Start with Check 1 below and perform the other checks as instructed. Check 1 If any of the following messages appear, perform Check 2.
Procedure 3 Format Check The 610CT HDD is formatted using the low level format program and the MS-DOS FORMAT program. To format the HDD, start with Check 1 below and perform the other steps as required. Check 1 Using the Toshiba MS-DOS system disk, partition the hard disk using the FDISK command. Format the hard disk using FORMAT C:/S/U to transfer the system program to the HDD. If the following message appears on the display, the HDD is formatted.
Procedure 4 Diagnostic Test Program Execution Check The HDD test program is stored in the 610CT 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; perform Check 1. The error codes and statuses are described in table 2-4. If an error code is not generated, the HDD is operating properly.
2.7 Keyboard Troubleshooting To determine if the 610CT 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. Refer to chapter 3, Tests and Diagnostics, for more information on how to perform the test program.
Check 4 The IPS controller on the power supply board may be damaged. Replace the power supply board with a new one. Refer to chapter 4 for more information. If the keyboard is still not functioning properly, perform Check 5. Check 5 The accupoint control button contact is connected to the sound board. The accupoint control button contact may be damaged. Replace it with a new one. Refer to chapter 4 for more information. If the keyboard is still not functioning properly, perform Check 6.
2.8 Display Troubleshooting This section describes how to determine if the 610CT display is functioning properly. Start with Procedure 1 and continue with the other procedures as instructed.
Procedure 3 Connector Check The Display unit has an LCD module, FL, panel close switch, and FL inverter board. The FL and FL inverter board are connected by cable. The LCD module and system board are connected by signal cable as shown below. Any of these cables may be disconnected. Disassemble the display unit and check the following cable connections. Refer to chapter 4. Replacement Procedures, for more information about how to disassemble the computer.
Check 2 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. Check 4 Replace the panel sensor switch with a new one and test the display again. If the problem still exists, perform Check 5. Check 5 Replace the display cable with a new one and test the display again. If the problem still exists, perform Check 6.
3.1 The Diagnostic Test This chapter explains how to use the 610CT Diagnostic Test Program (TEST610) to test the functions of the hardware modules. The Diagnostics Test Program is stored on the Diagnostic Disk. The Diagnostics Test Program consists of 20 programs that are grouped into the Service Program Module (DIAGNOSTICS MENU) and the Test Program Module (DIAGNOSTIC TEST MENU). The DIAGNOSTICS MENU consists of the following eight functions.
3.2 Executing the Diagnostic Test Toshiba MS-DOS is required to run the 610CT Diagnostic Test Program. To start the Diagnostic Test Program follow these steps: 1. Insert the 610CT Diagnostics disk in the computer’s external floppy disk drive and turn the computer on. 2. At the system prompt, change to drive A and type the test command, and press Enter. The following menu will appear: TOSHIBA personal computer PT610CT DIAGNOSTICS version X.XX (c) copyright TOSHIBA Corp.
3. To execute the DIAGNOSTIC TEST MENU from the DIAGNOSTICS MENU, set the highlight bar to 1, and press Enter. The following DIAGNOSTIC TEST MENU will appear: TOSHIBA personal computer PT610CT DIAGNOSTICS version X.XX (c) copyright TOSHIBA Corp.
5. Select the desired subtest number from the subtest menu and press Enter. The following message will appear: TEST LOOP : YES Selecting YES increases the pass counter by one each time the test cycle ends and then restarts the test cycle. Selecting NO returns the subtest menu to the main menu after the test is complete. 6. The following message will appear: ERROR STOP : YES Use the left or right arrow keys to move the cursor to the desired option and press Enter.
3.3 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) No. 1 610CT Test name SYSTEM 2 MEMORY 3 KEYBOARD 4 DISPLAY 5 FDD 6 PRINTER Subtest No.
Table 3-1 Subtest names (2/2) No. 3-6 Test name 7 ASYNC 8 HDD 9 REAL TIMER 10 11 12 NDP EXPANSION SOUND Subtest No.
3.4 System Test To execute the System Test select 1 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions displayed on the screen. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 ROM checksum The ROM checksum tests the system board from address F0000h to FFFFFh (64KB).
Subtest 04 Fan on/off This subtest checks fan operation. The fan cable is securely connected to PJ16 on the system board. When you execute this subtest, the following message appears: *** Fan ON *** : Press [Enter] key? When you press Enter, the fan should spin. *** Fan OFF *** : Press [Enter] key? When you press Enter, the fan should stop. Subtest 05 Thermistor check This subtest checks the thermistor that controls CPU temperature. The thermistor cable connects to PJ23 on the system board.
3.5 Memory Test To execute the Memory Test, select 2 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions displayed on the screen. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 Constant data 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 result with the original data. The constant data is FFFFh, AAAAh, 5555h, and 0000h.
Subtest 05 Memory module NOTE: To execute this subtest, an optional memory card must be installed in the computer. This subtest functions the same as subtest 04, except it is used for testing an optional memory card. Memory module capacity is 8 MB, 16 MB, 24 MB, and 32 MB. After selecting subtest 05, the following message will appear: Extended memory size (1:8 MB,2:16 MB,3:24 MB,4:32 MB) ? Select the number that corresponds to the memory card installed in the 610CT.
3.6 Keyboard Test To execute the Keyboard Test, select 3 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions displayed on the screen. The Keyboard test contains four subtests that test the 610CT keyboard actions. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 Pressed key display (82/84) NOTE: The Numeric and the Arrow modes must be off to execute this subtest.
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. The scan codes, character codes, and keytop names are shown in Appendix D.
Subtest 04 Ponting Stick Check NOTE: To execute the pointing stick check, mouse driver software must be installed. This subtest checks the function of the pointing stick as shown below. a) IPS stick pressure sensing direction and parameter. b) IPS switch function check. This test reports the pointing stick response from the IPS and IPS switch by displaying the location parameters. When the stick is pressed towards the upper left, the display changes to an arrow as shown below.
3.7 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 610CT display in various modes. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 VRAM Read/Write This subtest writes constant data FFFFh, AAAAh, 5555h, 0000h, and address data to video RAM (1MB).
After pressing Enter, 16 colors or 16 gray scales of mode 13h appear in the 320x200 graphics mode as shown below: BLACK BLUE GREEN CYAN RED MAGENTA BROWN WHITE GRAY LIGHT BLUE LIGHT GREEN LIGHT CYAN LIGHT RED LIGHT MAGENTA YELLOW INTENSE WHITE Pressing Enter toggles between the two tests. To exit this subtest and return to the DISPLAY TEST menu, press Ctrl + Break. Subtest 03 Character Set In this subtest, the character set (addressed 00h to FFh) is displayed in the 40*25 character mode as shown below.
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 “#$%&’()*+,-.
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: To exit this subtest and return to the DISPLAY TEST menu, press Ctrl + Break. Subtest 07 640x350/480 Character Display (mode 10, 12) This subtest displays even dots, odd dots, and all dots in the 640x350, and 640x480 dot graphics mode 10, 12 as shown below: Pressing Enter changes the size of the displayed image.
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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0000000000000000000000000000000000000000 Pressing Ctrl + Break exits this subtest, after completion of the test, and returns to the DISPLAY TEST menu. Subtest 09 H Pattern Display/Border Color This subtest displays 2000 H characters on the entire screen, as shown below.
Subtest 10 LED/DAC Pallet This subtest checks the indicator icons (Caps Lock, Overlay and Num Lock) by key operation. [ Caps/Num/Overlay LED test ] (1) Press [ Caps Lock ] key !...Caps (on/off) (2) Press [ Fn + F10 ] key !...Arrow (on/off) (3) Press [ Fn + F11 ] key !...Num (on/off) PRESS [Enter] KEY Press Enter to display the following two messages: After pressing Enter, it writes the ‘2A’ and ‘15’ data to 6 bit of 256x3 (RGB), then reads new data and compares the result with original data.
3.8 Floppy Disk Test CAUTION: Before running the floppy disk test, prepare a formatted work disk. Remove the Diagnostics Disk and insert a work disk into the FDD. The contents of the floppy disk will be erased. To execute the Floppy Disk Test, select 5 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions displayed on the screen. The Floppy Disk test contains five subtests that test the 610CT external floppy disk drive.
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. The start track is specified when the FDD test is started from the Diagnostic Test Menu.
3.9 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 610CT. The following messages will appear after selecting the Printer Test from the DIAGNOSTIC TEST MENU. Answer each of the following questions with an appropriate response to execute the test.
Subtest 02 Function This subtest is for IBM compatible printers, and tests the following functions: Normal print Double width print Compressed print Emphasized print Double strike print All characters print This subtest prints the various print types shown below: PRINTER TEST 1. THIS LINE SHOWS NORMAL PRINT. 2. THIS LINE SHOWS DOUBLE-WIDTH PRINT. 3. THIS LINE SHOWS COMPRESSED PRINT. 4. THIS LINE SHOWS EMPHASIZED PRINT. 5. THIS LINE SHOWS DOUBLE-STRIKE PRINT. 6. ALL CHARACTERS PRINT !"#$%&'()*+,.
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 five subtests that test the 610CT asynchronous communication functions. Move the highlight bar to the subtest you want to execute and press Enter.
Subtest 03 Point to point (Send) NOTE: To execute this subtest, two machines must be connected with an RS-232-C direct cable. One machine should be set as “send” (subtest 03) and the other set as “receive” (subtest 04). The wiring diagram for the RS-232-C direct cable is described in Appendix F. This subtest sends 20h through 7Eh data to the receive side, then receives the sent data and compares it to the original data.
3.11 Hard Disk Test To execute the Hard Disk Test, select 8 from the DIAGNOSTIC TEST MENU. Press Enter, and follow the directions displayed on the screen. The hard disk test contains 10 subtests that test the 610CT hard disk drive functions. The following messages will appear after selecting the hard disk test from the DIAGNOSTIC TEST MENU.
6. The Hard Disk Test message will appear after you respond to the Detail Status prompt. Select the number of the subtest you want to execute and press Enter. The following message will appear during each subtest. HARD DISK TEST XXXXXXX SUB-TEST : XX PASS COUNT: XXXXX ERROR COUNT: XXXXX WRITE DATA: XX READ DATA : XX ADDRESS : XXXXXX STATUS : XXX The first three digits of the ADDRESS indicate which cylinder is being tested, the fourth digit indicates the head and the last two digits indicate the sector.
Subtest 04 Cross Talk & Peak Shift This subtest writes eight types of worst pattern data (shown below) to a cylinder, then reads the data while moving from cylinder to cylinder.
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 610CT real timer functions. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 Real Time A new date and time can be input during this subtest. To execute the real time subtest follow these steps: 1.
Subtest 03 Real Time Carry CAUTION: When this subtest is executed, the current date and time are erased. This subtest checks the real time clock increments, making sure the date and time are displayed in the following format: Current date : 12-31-1994 Current time : 23:59:58 Pressing Enter displays the following: Current date : 01-01-1995 Current time : 00:00:00 PRESS [Enter] KEY TO EXIT TEST Press Ctrl + Break to exit.
3.13 NDP Test To execute the NDP test, select 10 from the DIAGNOSTICS TEST MENU, press Enter and follow the directions on the screen. The NDP test contains one subtest that tests the 610CT NDP functions. Subtest 01 NDP This test checks the following NDP functions: ❑ ❑ ❑ ❑ ❑ Control word Status word Bus Addition Multiplication Press Ctrl + Break to exit.
3.14 Expansion Test NOTE: To execute this subtest, the PCMCIA wraparound card is required.
3.15 Sound Test To execute the Sound test, select 12 from the DIAGNOSTICS TEST MENU, press Enter and follow the directions on the screen. The Sound test contains three subtests that test the 610CT series Sound functions. Subtest 01 CODEC (REC/PLAY) NOTE: To execute this subtest, the internal microphone and internal headphone (or internal speaker) are required. Tests the functions of the Codec (ES688) A/D, D/A converter. At the same time, tests the microphone and headphone terminals.
3.16 Error Code and Error Status Names Table 3-3 lists the error codes and error status names for the Diagnostic Test.
Table 3-3 Error codes and error status names (2/2) Device name Error code Async (cont.
3.17 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. The first four digits represent the hard disk controller (HDC) error status number. The last four digits are not used.
Table 3-5 Error register contents Bit 7 Name BBK1 (Bad block Description “0” Other “1” A bad block mark is detected. mark) 6 UNC “0” There is no uncorrectable data error. (Uncorrectable) “1” Uncorrectable data error has been detected. 5 —— Not used. 4 IDNF “0” Other (Identification) “1” There was no ID field in the requested sector. 3 —— Not used 2 ABRT (Abort) “0” Other “1” Illegal command error or a drive status error occurred.
3.18 Hard Disk Format This command executes hard disk formatting. There are two types of hard-disk formatting: ❑ Low-level (physical) formatting ❑ MS-DOS (logical) formatting This hard disk format function performs a low-level format of the hard disk and executes the following three hard disk formats and one check: 1. 2. 3. 4. All track FORMAT Good track FORMAT Bad track FORMAT Bad track CHECK CAUTION: The contents of the hard disk will be erased when this program is executed.
2. Good track FORMAT This option formats a specified cylinder and track as a good track. If a good track is formatted as a bad track, use this option to change the track to a good track. 3. Bad track FORMAT This option formats a specified cylinder and track as a bad track. If a bad track is detected, use this option to label it as a bad track. 4. Bad track CHECK This option searches the hard disk for bad tracks by reading data to all the tracks on the hard disk.
The following selections also appear at the bottom of the screen in succession: Drive number select (1:#1,2:#2) ? (a) Select a drive number and press Enter. The following message will appear: Interleave number (1/1 ~ 8) ? (b) Select an interleave number, 1 ~ 8 and press Enter. Pressing only Enter selects 1. Unlock format select (1:no/2:yes) (c) Select whether the disk has an unlock format. NOTE: This option appears only when an HDD manufactured by JVC is installed.
2. Good track FORMAT If a good track has been erroneously formatted as a bad track, you can use this subtest to reformat the track as a good track. To format a track as a good track, enter the numbers for the drive, interleave, cylinder, and head as indicated in the screen prompt shown below. 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.
3.19 Head Cleaning 3.19.1 Function Description This function cleans the heads in the FDD by executing a series of head load/seek and read operations. A cleaning kit is necessary to perform this program. 3.19.2 1. Operations Selecting test 4 from the DIAGNOSTIC MENU and pressing Enter displays the following messages: DIAGNOSTICS - FLOPPY DISK HEAD CLEANING : VX.XX Mount cleaning disk(s) on drive(s). Press any key when ready. 3-42 2.
3.20 Log Utilities 3.20.1 Function Description This function logs error information generated while a test is in progress and stores the results in RAM. This function can store data on a floppy disk or output the data to a printer. If the power switch is turned off, the error information will be lost. The error information is displayed in the following order: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 3.20.2 1.
2. The error information displayed on the screen can be manipulated by the following number keys: The 1 key scrolls the display to the next page. The 2 key scrolls the display to the previous page. The 3 key returns to the Diagnostic Menu. The 4 key erases all error log information in RAM. The 5 key outputs the error log information to a printer. The 6 key reads the log information from a floppy disk. The 7 key writes the log information to a floppy disk. 3.
3.21 Running Test 3.21.1 Function Description This function automatically executes the following tests in sequence: 1. 2. 3. 4. 5. 6. 7. 8.
4. Select Yes or No and press Enter. The following message will appear : Mount the work disk(s) on the drive(s), then press [Enter] key. [Warning : The contents of the disk(s), will be destroyed] 5. 3-46 This program is executed continuously. To terminate the program, press Ctrl + Break.
3.22 Floppy Disk Drive Utilities 3.22.1 Function Description This function formats the FDD, copies the floppy disk, and displays the dump list for both the FDD and HDD. 1. 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 3.5-inch floppy disk in the following formats: 2. (a) 2D: Double-sided, double-density, 48/67.5 TPI, MFM mode, 512 bytes, 9 sectors/track.
2. FORMAT program (a) Selecting FORMAT displays the following message: DIAGNOSTICS - FLOPPY DISK FORMAT : VX.XX Drive number select (1:A, 2:B) ? (b) Select a drive number to display the following message: Type select (0:2DD-2DD,1:2D-2D,2:2D-2HD,3:2HD-2HD) ? (c) 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. Insert work disk into drive A: Press any key when ready.
(c) Remove the Diagnostics Disk from the FDD, insert the source disk, and press any key. The following message will appear, indicating the program has started. [ FDD TYPE ] : TRACK = XXX [ FDD TYPE ] : HEAD = X [ FDD TYPE ] : SECTOR = XX Copy start [[ track,head (d) = XXX X ]] Remove the source disk from the FDD, insert a formatted work disk, and press any key. The [[ track, head = XXX X ]] message will appear and start copying to the target disk.
3.23 System Configuration 3.23.1 Function Description The System Configuration program contains the following configuration information for the 610CT: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 3.23.
3.24 SETUP 3.24.1 Function Description This program displays the current system setup information as listed below: 610CT 1. Memory (a) Total (b) Base (c) Extended Memory (d) Shadow BIOS ROM 2. Display (a) Display Adapter (b) LCD Display Mode (c) Display Colors (d) Power On Display (e) Text Mode Stretch 3. Hard Disk (a) HDD Mode 4. I/O Ports (a) Serial Port (b) Parallel Port (c) Sound System 5. Password 6.
3.24.2 Accessing the SETUP Program Selecting 0 from the DIAGNOSTICS MENU and pressing Enter displays the following: SYSTEM SETUP MEMORY BIOS version = x.
2. To make other changes, press N. Repeat the steps above. 3. To accept the changes, press Y. NOTE: You can press Esc to quit at any time without saving changes. SETUP asks you to confirm that you don’t want to save your changes. The Factory Preset Configuration When you access SETUP, the current configuration is displayed. 1. To show the factory preset configuration, press Home. 2. To accept the default settings, press End and then press Y.
2. Display This group of options helps you configure the computer’s display. (a) Display Adapter This field displays the internal controller for the VGA internal display. Only VGA compatible is displayed. You cannot change it. (b) Display Mode The LCD displays text in 80 characters by 25 lines and graphics in 640 by 480 pixels for either Color or Monochrome mode. Use this option to set the computer’s display mode to Color or Monochrome. Color Monochrome (c) Selects color mode.
(e) Text Stretch Mode Text stretch mode enables a larger display area of 680x480 pixels in text mode. Disabling this function reduces the resolution to the standard 640x400 pixels. 3. Enabled Enables the text stretch mode feature. (Default) Disabled Disables the text mode stretch feature. Hard Disk This item lets you select the hard disk IDE mode. Enhanced IDE (Normal) Standard IDE 4. (Default) To see the capacity of the hard disk, use the CHKDSK command.
(b) Parallel Port This option sets the address for the parallel port. The options are: LPT1 (378H): Sets the address to 378H. (Default) LPT2 (278H): Sets the address to 278H. LPT3 (3BCH): Sets the address to 3BCH. When you select one of the above options, except for Not used, a subwindow similar to the one below appears to let you set the parallel port mode. The options for this setting are Output (default) and Bi-Directional.
NOTE: Sound Blaster compatible software uses IRQ7 as the default. If you use such software, try to change the software setting to IRQ10. If you cannot change the software setting, change the hardware setting to IRQ7. (d) DMA (direct memory access) channel Use this option to set the DMA channel. The available settings are: Channel 0, Channel 1 (Default), Channel 3 5. Password This option allows you to set or reset the password for power on and instant security.
Option Write Policy = Write-back Write-back policy provides better system performance, because the main memory is accessed only when necessary to update the cache contents with changes in the main memory. Write-through policy accesses main memory every time data is handled by the processor. (c) Battery Save Mode This option is used to select Full Power or Low Power or User Setting of the BATTERY SAVE OPTION. Full Power The following shows full power setting.
(d) Alarm Volume This option disables or sets the volume level of the alarm. Setting this option to off disables the computer’s sound function for alarms. This option can also be set by hotkeys. Off Low Medium High Disables alarm. Sets the alarm volume to low. Sets the alarm volume to medium. Sets the alarm volume to high. (Default) When Alarm Volume is selected, the subwindow below is displayed to let you enable or disable certain functions.
(g) Alarm Power On This option lets you set the time for the system to turn on automatically. For example, if you are expecting to receive a modem transmission at a time when you are away or asleep, you can set this option to the time of the transmission. This option does not automatically turn off the system. This feature operates in either Resume or boot mode. 00:00:00 Sets the power on time (24-hour clock). Disabled Disables the alarm.
Disabled Fn Equivalent No Fn key equivalent. (Default) Left Ctrl b Right Ctrl Left Alt Right Alt Left Alt + + + + + Left Alt* Right Alt* Left Shift Right Shift Caps Lock * If these selections are made, you cannot warm boot the system by pressing Ctrl + Alt + Del. (i) Pointing Devices This option enables or disables the AccuPoint. (j) Auto selected The AccuPoint is disabled when a PS/2 mouse or serial mouse is connected, otherwise the Accupoint is enabled.
(b) CPU Sleep Mode Use this option to enable or disable the CPU sleep function. (c) Enabled Enables sleep mode. Disabled Disables sleep mode. Display Auto Off Use this option to disable or set the duration of the display automatic power off function. This function causes the computer to turn the LCD panel’s illumination off if you make no entry for the set period of time. Disabled xx Min. (d) Disables display automatic power off.
(f) LCD Brightness Use this option to set the level of LCD brightness. Bright Semi-bright xx Min. (g) Less than full brightness for saving power. Automatically turns off power to the system if it is not used for the duration set. The duration xx can be set to 3, 5, 10, 15, 20, or 30 minutes. Cooling method Performance Quiet 610CT Full brightness for maximum visibility. If the CPU becomes too hot, the fan is turned on automatically. The CPU processing speed does not change.
4.1 General This section explains how to disassemble the 610CT and replace Field Replaceable Units (FRUs). It may not be necessary to remove all the FRUs in order to replace one. The chart below is a guide to which FRUs need to be removed in order to remove others. Always start by removing the battery pack, then follow the lines on the chart to determine which FRU you must remove next in order to repair the one you think is causing the 610CT to operate improperly.
Observe the following Cautions and Warnings when you change an FRU or other component. WARNING: 1. Turn off the power and disconnect the AC power cord or AC adapter from the power source; exposure to electric shock hazards may occur. 2. Batteries in the computer retain electrical charge, so there is danger of electrical shock even when the computer is disconnected from an AC power source.
Before You Begin Look over the procedures in this section before you begin disassembling the 610CT. Familiarize yourself with the disassembly and reassembly steps. Begin each procedure by removing the AC adapter and the battery pack as instructed in section 4.2, The Battery Pack. 1. Do not disassemble the 610CT unless it is operating abnormally. 2. Use only the correct and approved tools. 3.
Assembly Procedures After you have disassembled the 610CT and fixed or repaired the problem that was causing the 610CT to operate abnormally, you will need to reassemble the 610CT. While assembling the 610CT, remember the following general points: ❑ Take your time, making sure you follow the instructions closely. Most problems arise when you hurry to assemble the 610CT. ❑ Make sure all cables and connectors are securely fastened.
Screw Tightening Torque When you fasten screws, be sure to follow the torque list below. Overtightening can damage components and screws; undertightening can result in electrical shorts or other damage if screws or components come loose. ❑ M2 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.
4.2 The Battery Pack Removing the Battery Pack To remove the 610CT battery pack, follow the steps below and refer to figures 4-1 and 4-2. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Close the display if it is open. 3. Turn the computer upside down. 4. Slide the battery lock to free the battery release latch, then slide the battery release latch to pop the battery out slightly to the left (figure 4-1).
Installing the Battery Pack To install the 610CT battery pack, follow the steps below and refer to figures 4-1 to 4-3. 1. Place the right end of the battery pack at the red line marked on the alignment guide. The battery pack should seat level with the computer. Figure 4-3 Installing the battery pack 2. 610CT Gently press down on the center of the battery pack and at the same time push it to the right. When the battery is nearly seated, you will feel a slight resistance.
4.3 Optional Memory Module Removing an Optional Memory Module To remove an optional memory module from the 610CT, follow the steps below and refer to figure 4-4. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack as described in section 4.2. 3. Turn the computer upside down. 4. Remove two M2.5x4 screws securing the memory module socket cover. 5.
6. Remove two screws securing the module to a brace at the center of the module and set them aside (figure 4-5). 7. Lift up on the plastic tab to disengage the connectors, then grasp the module by the edges and remove it.
Installing an Optional Memory Module To install an optional memory module in the 610CT, follow the steps below and refer to figures 4-4 through 4-6. 1. Position the connector on the bottom of the module over the corresponding connector on the computer (align the holes on the side of the module over the screw holes on the brace). Place your fingers above the connector and press firmly but gently to assure a solid connection. The module should be seated level (figure 4-6).
4.4 Optional PCMCIA Card Removing an Optional PCMCIA Card To remove an optional PCMCIA card from the 610CT, follow the steps below and refer to figure 4-7. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack and optional memory module as described in sections 4.2. and 4.3. 3. Open the cover to the PCMCIA slot. 4. Pull out the eject button for the card you want to remove and press the button.
Installing an Optional PCMCIA Card To install an optional PCMCIA card in the 610CT, follow the steps below and refer to figure 4-8. 1. Insert the PCMCIA card as shown in figure 4-8. When the card is almost fully seated, you will feel some resistance. Press gently to assure a firm connection, but do not force the card into position. Figure 4-8 Installing the PCMCIA card 4-12 2.
4.5 Keyboard Removing the Keyboard To remove the 610CT keyboard, follow the steps below and refer to figures 4-9 through 4-12. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, optional memory module, and optional PCMCIA card as described in sections 4.2, 4.3, and 4.4. 3. Open the display if it closed. 4. Use a thin metal tool to unlatch 12 latches that secure the keyboard cover (figure 4-9).
6. Insert the thin metal tool between the keyboard and top cover to lift up the keyboard (figure 4-11). Lift up slightly so notches at the back of the keyboard clear corresponding holes on the top cover. Do not remove the keyboard cable. Figure 4-11 Lifting the keyboard 7. Disconnect the AccuPoint cable from PJ2 and the keyboard cable from PJ7 (figure 4-12). Figure 4-12 Removing the keyboard cable 8. 4-14 Lift out the keyboard.
Installing the Keyboard To install the 610CT keyboard, follow the steps below and refer to figures 4-9 through 4-12. 610CT 1. Connect the AccuPoint cable to PJ2 and keyboard cable to PJ7 (figure 4-12). 2. Replace the keyboard. Fit tongues on the back of the keyboard into corresponding holes on the top cover and lay the keyboard in place. 3. Secure one M2x4 screw with washer in front of the keyboard (figure 4-10). 4.
4.6 Hard Disk Drive Removing the Hard Disk Drive To remove the 610CT hard disk drive, follow the steps below and refer to figures 4-13 and 414. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, optional memory card, optional PCMCIA card, and keyboard as described in sections 4.2, 4.3, 4.4, and 4.5. 3. Remove one M2x4 screw from the HDD. 4.
6. Remove four M3x4 flat-head screws securing the bracket to the HDD and remove the bracket.
Installing the Hard Disk Drive To install the 610CT hard disk drive, follow the steps below and refer to figures 4-13 and 414. 4-18 1. Seat the HDD in its bracket. 2. Secure the HDD to the bracket with four M3x4 flat-head screws. 3. Seat the HDD into the bottom cover, making sure to align the connectors. 4. Press the HDD gently to secure the connection. 5. Secure the HDD bracket with one M2x4 screw. 6.
4.7 Top Cover Removing the Top Cover To remove the 610CT top cover, follow the steps below and refer to figures 4-15 through 417. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, optional memory card, optional PCMCIA card, keyboard, and HDD as described in sections 4.2 through 4.6. 3. Close the display and turn the computer upside down. 4.
5. Turn the computer back over and open the display panel. Remove the tape securing the cables and disconnect the following cables: LED from PJ9, FL inverter from PJ13, display from PJ12, speaker from PJ18, display panel open sensor from PJ17, and microphone from PJ2. 6. Unthread the microphone cable. Figure 4-16 The top cover’s nine latches 7. Unlatch nine latches securing the top cover to the base cover (figure 4-17). Figure 4-17 Separating the top cover 8.
Installing the Top Cover To install the 610CT top cover, follow the steps below and refer to figures 4-15 to 4-17. 610CT 1. Set the top cover in place and snap in the nine latches (figures 4-16 and 4-17). 2. Rethread the microphone cable. 3. Connect the following cables: LED to PJ9, FL inverter to PJ13, display to PJ12, speaker to PJ18, display panel open sensor to PJ17, and microphone to PJ2. 4. Replace the tape to secure the cables. 5. Close the display and turn the computer upside down. 6.
4.8 RTC and Backup Batteries Removing the RTC and Backup Batteries To remove the 610CT RTC and backup batteries, follow the steps below and refer to figure 4-18. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord and all external cables connected to the computer. 2. Remove the battery pack, optional memory card, optional PCMCIA card, keyboard, and top cover as described in sections 4.2 through 4.7. 3. Peel off the tape securing the backup battery cable. 4.
Installing the RTC and Backup Batteries DANGER: Always use the RTC battery or backup battery that is authorized by Toshiba to be compatible with the unit. Since other batteries have different specifications, they may be incompatible with the unit and may burst or explode. To install the 610CT RTC and backup batteries, follow the steps below and refer to figure 4-18. 610CT 1. Connect the backup battery cable to PJ21 on the power supply board and seat the battery.
4.9 AccuPoint Control Button Contact Removing the AccuPoint Control Button Contact To remove the 610CT AccuPoint control button contact, follow the steps below and refer to figure 4-19. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, optional memory card, optional PCMCIA card, keyboard, top cover, RTC and backup batteries as described in sections 4.2 through 4.8. 3.
Installing the AccuPoint Control Button Contact To install the 610CT AccuPoint control button contact, follow the steps below and refer to figure 4-19. 610CT 1. Lay the AccuPoint control button contact in place. 2. Connect the cable to PJ3 on the sound board. 3. Replace the RTC and backup batteries, top cover, keyboard, optional PCMCIA card, optional memory card, and battery pack as described in sections 4.8 back through 4.2.
4.10 Sound Board Removing the Sound Board To remove the 610CT sound board, follow the steps below and refer to figure 4-20. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, optional memory card, optional PCMCIA card, keyboard, HDD, top cover, RTC and backup batteries and AccuPoint control button contact as described in sections 4.2 through 4.9. 3. Remove one M2.5x3 screw. 4.
Installing the Sound Board To install the 610CT sound board, follow the steps below and refer to figure 4-20. 610CT 1. Partially position the sound board so the microphone and headphone ports on the sound board can be placed into the side cover. 2. Connect the sound board cable to PJ20 and seat the sound board. 3. Replace the sound board cover. 4. Secure the sound board and the sound board cover with one M2.5x3 screw. 5.
4.11 Power Supply Board Removing the Power Supply Board To remove the 610CT power supply board, follow the steps below and refer to figure 4-21. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, optional memory card, optional PCMCIA card, keyboard, HDD, top cover, RTC and back-up batteries, AccuPoint control button contact, and sound board as described in sections 4.2 through 4.10. 3.
Installing the Power Supply Board To install the 610CT power supply board, follow the steps below and refer to figure 4-21. 610CT 1. Seat the power supply board in the bottom cover. 2. Connect the power supply cable to PJ14 on the system board. 3. Replace the sound board support. 4. Replace the sound board, AccuPoint control button contact, RTC and back-up batteries, top cover, HDD, keyboard, optional PCMCIA card, optional memory card, and battery pack as described in sections 4.10 back through 4.
4.12 System Board Removing the System Board To remove the 610CT system board, follow the steps below and refer to figure 4-22. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, optional memory card, optional PCMCIA card, top cover, hard disk drive, RTC and back-up batteries, AccuPoint control button contact, sound board, and power supply board as described in sections 4.2 through 4.11. 3.
Installing the System Board To install the 610CT system board, follow the steps below and refer to figure 4-22. NOTE: New system boards do not have fans attached. Therefore, when you remove a malfunctioning system board for replacement, be sure to retain the fan for use in the new system board. 610CT 1. Seat the system board. 2. Replace the metal cover. 3. Secure the system board with five M2.5x4 screws. 4.
4.13 Fan Removing the Fan To remove the 610CT fan, follow the steps below and refer to figure 4-23. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, optional memory card, optional PCMCIA card, keyboard, HDD, top cover, RTC and backup batteries, AccuPoint control button contact, sound board, power supply board and system board, as described in sections 4.2 through 4.12. 3.
Installing the Fan To install the 610CT fan, follow the steps below and refer to figure 4-23. 610CT 1. Secure the fan to the system board with two M3x3 screws. 2. Connect the fan cable to PJ16. 3. Replace the system board, power supply board, AccuPoint control button contact, RTC and backup batteries, top cover, HDD, keyboard, optional PCMCIA card, optional memory card, and battery pack as described in sections 4.12 back through 4.2.
4.14 LED Board and Speaker Removing the LED Board and Speaker To remove the 610CT LED board and speaker, follow the steps below and refer to figure 4-24. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, optional memory card, optional PCMCIA card, keyboard, HDD, and top cover as described in sections 4.2 through 4.7. 3. Remove two M2.5x4 screws securing the LED board and speaker assembly. 4.
Installing the LED Board and speaker To install the 610CT LED board and speaker, follow the steps below and refer to figure 4-24. 610CT 1. Put the protective rubber cover on the speaker. 2. Place the speaker in the assembly and secure the two latches. 3. Place the LED board in the assembly and secure the four latches. 4. Seat the assembly in the bottom cover. 5. Secure the LED board and speaker assembly with two M2.5x4 screws. 6.
4.15 Display Mask Removing the Display Mask To remove the 610CT display mask, follow the steps below and refer to figure 4-25. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, optional memory module and PCMCIA card as described in sections 4.2, 4.3, and 4.4. 3. Remove two rubber seals from the display hinges to expose screws securing the display mask. 4. Remove two brass M2.
Installing the Display Mask To install the 610CT display mask, follow the steps below and refer to figure 4-25. 610CT 1. Set the display mask in place and press firmly to secure the latches. Start at the bottom five latches and work your way around the sides (four latches on each side) and, finally, secure the six latches at the top. 2. Secure two M2.5x6 screws at the bottom corners of the display cover. 3. Replace two rubber seals to cover the screws. 4.
4.16 FL Inverter Board Removing the FL Inverter Board WARNING: To reduce the risk of accidental electric shock when you turn on the power to check the FL inverter during disassembly, never touch the exposed areas that carry high-voltage. To remove the 610CT FL inverter board, follow the steps below and refer to figure 4-26. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2.
Installing the FL Inverter Board To install the 610CT FL inverter board, follow the steps below and refer to figure 4-26. 610CT 1. Connect the FL inverter cable to CN1 and the FL cable to CN2 on the FL inverter board. 2. Secure two silver M2x6 screws to hold the FL inverter board. 3. Replace the display mask, PCMCIA card, optional memory module, and battery pack as described in sections 4.15, 4.4, 4.3, and 4.2.
4.17 TFT Color Display Module Removing the TFT Color Display Module To remove the 610CT TFT color display module, follow the steps below and refer to figure 4-27. CAUTION: When you remove the FL unit, be careful not to let any dust or other foreign matter contaminate the LCD panel. Any contamination can affect the performance of the unit. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2.
Installing the TFT Color Display Module To install the 610CT TFT color display module, follow the steps below and refer to figure 4-27. 610CT 1. Connect the flexible cable to CN11. 2. Seat the display module in the display cover and secure four silver M2x6 screws, one at each corner of the panel. 3. Replace the FL inverter board, display mask, PCMCIA card, optional memory module, and battery pack as described in sections 4.16, 4.15, 4.4, 4.3, and 4.2.
4.18 Fluorescent Lamp Unit Removing the Fluorescent Lamp Unit To remove the 610CT fluorescent lamp (FL), follow the steps below and refer to figures 4-28 and 4-29. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, optional memory module, PCMCIA card, display mask, FL inverter board, and display module as described in sections 4.2, 4.3, 4.4, 4.15, 4.16, and 4.17. 3.
Installing the Fluorescent Lamp Unit To install the 610CT fluorescent lamp unit, follow the steps below and refer to figures 4-28 and 4-29. 610CT 1. Seat the FL unit, secure the cable in the latches, and replace the tape . 2. Lay the FL unit cover in place and secure it with one M2.5x4 silver screw and one M2.5x2 silver screw. 3. Replace the display module, FL inverter board, display mask, PCMCIA card, optional memory module, and battery pack as described in sections 4.17, 4.16, 4.15, 4.4, 4.
4.19 Microphone Removing the Microphone To remove the 610CT microphone, follow the steps below and refer to figure 4-30. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, optional memory module, PCMCIA card, keyboard, HDD, top cover, and display mask, as described in sections 4.2 through 4.7, and 4.15. 3. Pinch the microphone cover to free it from two latches, then remove the cover. 4.
4.20 Display Cable Removing the Display Cable To remove the 610CT display cable, follow the steps below and refer to figure 4-31. 1. Turn off the power to the 610CT. Disconnect the AC adapter, power cord, and all external cables connected to the computer. 2. Remove the battery pack, optional memory module, PCMCIA card, keyboard, HDD, top cover, display mask, and microphone as described in sections 4.2 through 4.7, 4.15, and 4.19. 3. Remove four M2.
Appendix A Handling the LCD Module Precautions for Handling the LCD Module The computer’s LCD module can be easily damaged during assembly or disassembly. Therefore, please observe the following precautions when handling the LCD module. 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. 2.
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. Do not apply cleanser directly to the panel. A-2 4. If water or other liquid is left on the panel’s surface for a long period, it can change the screen’s tint or stain it.
610CT 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. 8. Do not store the module at temperatures below specifications. Cold can cause the liquid crystals to freeze, lose their elasticity or otherwise suffer damage.
9. 10. A-4 Do not disassemble the LCD module. Disassembly can cause malfunctions. If you transport the module, do not use packing material that contains epoxy resin (amine) or silicon glue (alcohol or oxime). These materials can release gas that can damage the panel's polarization.
Appendix B Board Layout B.
B.
Table B-1 System board ICs and connectors (front) Mark Number Name (A) IC6 SCPCNT GA (B) IC17 KBC Controller (C) IC23 I/O GA (D) PJ2 PRT Connector (E) PJ3 FDD Connector (F) PJ4 HDD Connector (G) PJ5 ASYNC I/F Connector (H) PJ6 P-REP Connector (I) PJ7 Keyboard Connector (J) PJ9 LED Connector (K) PJ11 PCMCIA Slot Connector (L) PJ12 Internal LCD Connector (M) PJ14 Power Supply Board Joint Connector (N) PJ15 RTC Battery Connector (O) PJ16 FAN Connector (P) PJ17
Appendix C C.1 Pin Assignments PJ1 SIMM Connector (140-pin) Table C-1 SIMM connector pin assignments (140-pin) (1/2) Pin No. 610CT Signal name I/O Pin No.
Table C-1 SIMM connector pin assignments (140-pin) (2/2) Pin No. C-2 Signal name I/O Pin No.
C.2 PJ2 PRT Connector (25-pin) Table C-2 PRT connector pin assignments (25-pin) C.3 Pin No. Signal name I/O Pin No.
C.4 PJ4 HDD Connector (44-pin) Table C-4 HDD connector pin assignments (44-pin) C.5 Pin No. Signal name I/O Pin No.
C.6 PJ6 P-REP Connector (72-pin) Table C-6 P-REP connector pin assignments (72-pin) 610CT Pin No. Signal name I/O Pin No.
C.7 PJ7 KB Connector (19-pin) Table C-7 KB connector pin assignments (19-pin) C.8 Pin No. Signal name I/O Pin No.
C.9 PJ11 PCMCIA Connector (140-pin) Table C-9 PCMCIA connector pin assignments (140-pin) (1/2) Pin No. 610CT Signal name I/O Pin No.
Table C-9 PCMCIA connector pin assignments (140-pin) (2/2) Pin No. C-8 Signal name I/O Pin No.
C.10 PJ12 LCD Connector (40-pin) Table C-10 LCD connector pin assignments (40-pin) Pin No. C.11 Signal name I/O Pin No.
C.12 PJ14 PS I/F Connector (60-pin) Table C-12 PS I/F connector pin assignments (60-pin) Pin No. C-10 Signal name I/O Pin No.
C.13 PJ15 RTC Battery Connector (3-pin) Table C-13 RTC battery connector pin assignments (3-pin) Pin No. C.14 Signal name I/O Pin No. 002 001 BAT I 003 GND — Signal Name I/O N.C. — PJ16 Fan Connector (3-pin) Table C-14 Fan connector pin assignments (3-pin) C.15 Pin No. Signal name I/O Pin No. 001 FANON;002 O 002 003 GND — Signal Name I/O GND — PJ17 Panel Sensor Connector (3-pin) Table C-15 Panel sensor connector pin assignments (3-pin) C.16 Pin No.
C.17 PJ20 Sound I/F Connector (70-pin) Table C-17 Sound I/F connector pin assignments (70-pin) Pin No. C-12 Signal name I/O Pin No.
C.18 PJ21 Sub-battery Connector (2-pin) Table C-18 Sub-battery connector pin assignments (2-pin) Pin No. 001 C.19 Signal name SUBBAT I/O Pin No. I 002 Signal Name I/O GND — PJ22 DC Jack Connector (3-pin) Table C-19 DC jack connector pin assignments (3-pin) Pin No. 610CT Signal name I/O Pin No.
Appendix D Keyboard Scan/Character Codes Table D-1 Scan codes (set 1 and set 2) (1/3) 610CT Cap No.
Table D-1 Scan codes (set 1 and set 2) (2/3) D-2 Cap No. Keytop Code set 1 Make Break Code set 2 Make 41 ‘ “ 28 A8 52 F0 52 43 44 Enter Shift (L) 1C 2A 9C AA 5A 12 F0 F0 5A 12 45 46 No.102 key Z 56 2C D6 AC 61 1A F0 F0 61 1A 47 48 X C 2D 2E AD AE 22 21 F0 F0 22 21 49 50 V B 2F 30 AF B0 2A 32 F0 F0 2A 32 51 52 N M 31 32 B1 B2 31 3A F0 F0 31 3A *2 53 54 , < .
Table D-1 Scan codes (set 1 and set 2) (3/3) Cap No.
Table D-2 Scan codes with left Shift key Cap No.
Table D-4 Scan codes with Fn key Cap No. Keytop Code set 1 Make Break Code set 2 Make 43 58 ENT CTRL E0 E0 1C 1D E0 E0 9C 9D E0 E0 5A 14 E0 E0 F0 F0 5A 14 60 121 LALT ARROW E0 38 E0 B8 E0 11 E0 F0 122 NUMERIC Break 05 C5 77 F0 11 77 05 C5 7E F0 7E Table D-5 Scan codes in overlay mode Cap No.
Table D-7 Scan codes with Alt key Key top Pause Shift Common Ctrl* E1 Code set 1 Make ID 45 E1 SD C5 E1 14 Code set 2 Make 77 E1 F0 E0 46 E0 7E E0 E0 C6 F0 14 F0 77 7E *: This key generates only make codes.
Appendix E Key Layout E.1 United States (US) Keyboard Figure E-1 US keyboard E.
E.3 German (GR) Keyboard Figure E-3 GR keyboard E.
E.5 Spanish (SP) Keyboard Figure E-5 SP keyboard E.
E.7 Scandinavian (SC) Keyboard Figure E-7 SC keyboard E.
E.
Appendix F Wiring Diagrams F.1 Printer Wraparound Connector (9) +PD7 (15) –ERROR (8) +PD6 (14) –AUTFD (7) +PD5 (13) +SELECT (6) +PD4 (16) –PINIT (5) +PD3 (1) (10) –STROBE –ACK (4) +PD2 (12) +PE (3) +PD1 (17) –SLIN (2) +PD0 (11) +BUSY Figure F-1 Printer wraparound connector F.2 RS-232-C Wraparound Connector (3) TD (2) RD (7) RTS (8) (1) CTS CD (4) DTR (6) (9) DSR RI Figure F-2 RS-232-C wraparound connector F.
F.
Appendix G BIOS Rewrite Procedures This Appendix explains how to rewrite the system BIOS program when you update the system BIOS. Tools To rewrite the BIOS, you need the following tool: ❑ BIOS rewrite disk for 610CT Rewriting the BIOS 610CT 1. Set the system to Boot Mode. 2. Turn off the power to the 610CT. 3. Remove the external cable and PCMCIA card. 4. Connect the external 3.5-inch floppy disk drive to 610CT. 5. Turn on the power while holding down the F12 key.
