Acer 721TX - TravelMate - PII 333 MHz Service Manual
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Acer 721TX - TravelMate - PII 333 MHz Service Manual

Acer 721TX - TravelMate - PII 333 MHz Service Manual

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Travel Mate 720
Service Guide
Service guide files and updates are available
on the AIPG/CSD web; for more information,
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http://csd.acer.com.tw
PART NO.: 49.42C01.001
DOC. NO.: SG295-9803A
PRINTED IN TAIWAN

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Summary of Contents for Acer 721TX - TravelMate - PII 333 MHz

  • Page 1 Travel Mate 720 Service Guide Service guide files and updates are available on the AIPG/CSD web; for more information, please refer to http://csd.acer.com.tw PART NO.: 49.42C01.001 DOC. NO.: SG295-9803A PRINTED IN TAIWAN...
  • Page 2 Copyright Copyright © 1999 by Acer Incorporated. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of Acer Incorporated.
  • Page 3 Conventions The following conventions are used in this manual: Denotes actual messages that appear on- Screen messages screen. NOTE Gives bits and pieces of additional informa- tion related to the current topic. WARNING Alerts you to any damage that might result from doing or not doing specific actions.
  • Page 4 Service Guide. For ACER-AUTHORIZED SERVICE PROVID- ERS, your Acer office may have a DIFFERENT part number code to those given in the FRU list of this printed Service Guide. You MUST use the list provided by your regional Acer office to order FRU parts for repair and service of customer machines.

  • Page 5: Table Of Contents

    Table of Contents Chapter 1 System Specifications Major Features ......1 System ....... 1 Connectivity .
  • Page 6 Table of Contents Power ....... 51 Exit ....... . . 53 Chapter 3 Removal and Replacement External Module Replacement .
  • Page 7 Table of Contents Setting Thermal Sensor Utility ... . 97 Running the Diagnostics ....98 Chapter 5 Jumper and Connector Information Top View .
  • Page 8 Table of Contents VIII...

  • Page 9: System Specifications

    Chapter 1 System Specifications Major Features System ® Intel Pentium II processor 64-bit main memory and on-die L2 cache memory Large and vibrant Thin-Film-Transistor (TFT) Extended Graphics Array (XGA) Liquid Crystal Display (LCD) 256-bit PCI/AGP graphics acceleration with 2.5MB graphics memory Internal, Ultra-slim, high-speed and removable CD-ROM drive (AcerMedia Bay) Internal 3.5-inch floppy drive...

  • Page 10: Display

    Display The large graphics display offers excellent viewing, display quality and desktop performance graphics. The computer supports a Thin-Film Transistor (TFT) liquid crystal display (LCD) displaying 16-bit hi-color at 1024x768 Extended Graphics Array (XGA) resolution. Video Performance PCI local bus video with industry-leading 256-bit graphics acceleration and high-speed 2.5MB Synchronous Graphics Random Access Memory (SGRAM) boost video performance.

  • Page 11: Opening And Closing The Display

    Opening and Closing the Display To open the display, slide the display cover latch to the left and lift up the cover. Then tilt it to a comfortable viewing position. The computer employs a microswitch that turns off the display (and enters standby mode) to conserve power when you close the display cover, and turns it back on when you open the display cover.

  • Page 12: Indicators

    Indicators The computer has six easy-to-read status indicators (LEDs) under the display screen. The Power and Standby indicators are visible even when you close the display cover so you can see the status of the computer while the cover is closed.

  • Page 13: Keyboard

    Keyboard The keyboard has full-sized keys and an embedded keypad, separate cursor keys, two Windows keys and twelve function keys. Special Keys Lock Keys The keyboard has three lock keys which you can toggle on and off. Lock Key Description Caps Lock When Caps Lock is on, all alphabetic characters typed are in uppercase.
  • Page 14 Embedded Numeric Keypad The embedded numeric keypad functions like a desktop numeric keypad. It is indicated by small characters located on the upper right corner of the keycaps. To simplify the keyboard legend, cursor-control key symbols are not printed on the keys. Desired Access Num Lock On Num Lock Off...
  • Page 15 Windows Keys The keyboard has two keys that perform Windows-specific functions. Description Windows logo key Start button. Combinations with this key performs special functions. Below are a few examples: á + Tab (Activates next Taskbar button) á + E (Explores My Computer) á...
  • Page 16 Hot Keys The computer employs hot keys or key combinations to access most of the computer’s control like screen contrast and brightness, volume output and the BIOS setup utility. To activate hot keys, press and hold the Fn key before pressing the other key in the hot key combination Hot Key Icon...
  • Page 17 Hot Key Icon Function Description Fn+F7 Touchpad on/ Turns the internal touchpad on and off. Fn+F8 Speaker on/off Turns the speakers on and off; mutes the sound. Brightness up Increases the screen brightness. Brightness Decreases the screen down brightness. Chapter 1...

  • Page 18: I/O Ports

    I/O Ports Rear Ports Icon Port Connects to... Speaker-out jack Speakers or headphones Line-in/Microphone-in Audio line-in device with a 3.5mm jack minijack (e.g., condenser microphone, audio CD player, stereo walkman). Serial port Serial device (e.g., serial mouse) Modem jack Phone line Parallel port Parallel device (e.g., parallel printer) External monitor port...
  • Page 19 Icon Port Connects to... DC-in jack AC adapter and power outlet Fax/Data Modem Some models have a built-in V.90 56Kbps PCI fax/data modem. Note: This modem port is not compatible with digital phone lines. Plugging this modem into a digital phone line will damage the modem. To use the fax/data modem port, connect a phone cable from the modem port to a telephone jack.

  • Page 20: Right Ports

    Right Ports Icon Port Connects to... PC Card slots 16-bit PC Cards and 32-bit CardBus PC Cards (ZV- support) PS/2 port PS/2-compatible device (e.g., PS/2 keyboard/mouse/keypad). System Specifications...

  • Page 21: Bottom Port

    Bottom Port Icon Port Connects to... Mini docking DockMate V mini docking station connector Chapter 1...

  • Page 22: Hardware Configuration And Specifications

    Hardware Configuration and Specifications Memory Address Map Address Range Definition Function 000000-09FFFF 640 KB memory Base memory 0A0000-0BFFFF 128 KB video RAM Reserved 0C0000-0CBFFF Video BIOS Video BIOS 0F0000-0FFFFF 64 KB system BIOS System BIOS 100000-top limited Extended memory SIMM memory FE0000-FFFFFF 256 KB system ROM Duplicate of code...
  • Page 23 Interrupt channel default assignment Channel Default setting mode Remarks IRQ15 CD-ROM driver DMA channel default assignment Channel Default setting Mode DRQ/DACK0 Reserved 8-bit DRQ/DACK1 8-bit DRQ/DACK2 Floppy 8-bit DRQ/DACK3 Fast Infrared 8-bit DRQ/DACK5 Reserved 16-bit DRQ/DACK6 Reserved 16-bit DRQ/DACK7 Reserved 16-bit I/O address map Address...
  • Page 24 I/O address map Address Device 3C6-3C9 Video DAC 3C0-3CF Enhanced graphics adapter 3E0-3E1 PCMCIA controller 3E8-3EF COM3 3F0-3F7 Floppy disk controller 3F8-3FF COM1 CF8-Cff PCI configuration register Processor Item Specification Processor type Intel Dixson (300/333Mhz) MMC-2 module 1. Intel Pentium II architecture 2.
  • Page 25 System Memory Item Specification Supported memory size per DIMM 16/32/64/128 MB Supported maximum memory size 256MB (128MB x 2) Supported DIMM type Synchronous DRAM Supported DIMM Speed SDRAM: With SPD without parity Supported DIMM voltage 3.3V Supported DIMM package 144-pin DIMM DIMM Memory Combinations Slot 1 Slot 2...
  • Page 26 Second-Level Cache Item Specification SRAM voltage 3.3V 1st level cache control always enabled 2st level cache control always enabled Cache scheme control Fixed in Write-back Video memory Item Specification Fixed or upgradeable Fixed, built-in NM2200 video controller Memory size 2.5 MB Video item Specification...
  • Page 27 Parallel Port Item Specification Number of parallel ports Location Rear side Connector type 25-pin D-type Parallel port function control Enable/Disable by BIOS Setup ECP support Yes (set by BIOS setup) Selectable ECP DMA channel (in BIOS DMA channel 1 Setup) DMA channel 3 Selectable parallel port I/O address 3E8h, 2E8h, 378h, 278h, Disabled...
  • Page 28 Item Specification FIR location Left side Selectable serial port (by BIOS Setup) 2F8h, IRQ3, Disabled Audio Item Specification Audio Controller NeoMagic NMG5 + NMA2 Audio onboard or optional Built-in Mono or Stereo Stereo Resolution 16-bit Compatibility SB-16, Windows Sound System Mixed sound source Voice, Synthesizer, Line-in, Microphone, CD...
  • Page 29 Fax/Modem Item Specification Support modem protocol V.34 data modem, V.17 fax modem, voice/audio mode, and digital simultaneous voice and data (DSVD) operation over a dial-up telephone line Modem connector type RJ11 & RJ45 combo phone jack Modem connector location Back side Keyboard Item Specification...
  • Page 30 Hard disk drives Item Specification Drive Format Capacity (MB) 10050 6480 Bytes per sector Logical heads Logical sectors Logical cylinders 16383 13424 Physical read/write heads Disks Spindle speed (RPM) 4200 4200 Buffer size (KB) Interface Data transfer rate (disk-buffer, Mbytes/s) 11.5~14.7 7.7~12.8 Data transfer, rate (host~buffer, Mbytes/s)
  • Page 31 Battery Item Specification Pack capacity (mAH) 3200 Cell voltage (V) Number of battery call Package configuration 2P-4S Package voltage (V) 14.8V Charger Item Specification Vendor & model name T62.085.C.00 Input voltage (from adapter, V) 7V-24V Output current (to DC/DC converter, A) Battery Low Voltage Li-ion Battery Low 1 level (V)
  • Page 32 DC-DC Converter Item Specification OCP (Over Current 0.3~0. Protection, A) DC-AC inverter is used to generate very high AC voltage, to support the LCD CCFT backlight user, and it is also responsible for the control of LCD brightness. Avoid touching the DC-AC inverter area while the system unit is turned on.
  • Page 33 Item Specification Brightness control Keyboard hotkey Keyboard hotkey Contrast control None None Electrical Specification Supply voltage for LCD display 3.3 (typ) 3.3 (typ) Supply voltage for LCD 730 (typ) 650 (typ) backlight (Vrms) AC Adapter Item Specification Vendor & model name Delta ADP-60HB Lite-On PA-1600-19 Input Requirements...
  • Page 34 AC Adapter Item Specification Electrostatic discharge +-15 (at air discharge) (ESD, kV) Dielectric withstand voltage Primary to secondary 3000 Vac (or 4242 Vdc), 10mA for 1 second Leakage current 0.25 mA maximum @ 254 Vac, 60Hz Regulatory Requirements Internal filter meets: FCC class B requirements.

  • Page 35: Power Management

    Power Management This computer has a built-in power management unit that monitors system activity. System activity refers to any activity involving one or more of the following devices: keyboard, mouse, drive, hard disk, peripherals connected to the serial and parallel ports, and video memory. If no activity is detected for a period of time (called an inactivity time-out), the computer stops some or all of these devices in order to conserve energy.
  • Page 36 Standby Mode The computer consumes very low power in Standby mode. Data remain intact in the system memory until the battery is drained. There are four ways to enter Standby mode: Pressing the Standby hot key Fn-F3 Allowing the waiting time specified by the Standby Time-out value or the operating system to elapse without any system activity Closing the display cover When the computer is about to enter Hibernation mode (e.g., during a...
  • Page 37 Hibernation Mode In Hibernation mode, all power shuts off (the computer does not consume any power). The computer saves all system information onto the hard disk before it enters Hibernation mode. Once you turn on the power, the computer restores this information and resumes where you left off upon leaving Hibernation mode.

  • Page 38: Advanced Power Management

    Advanced Power Management This computer supports the APM standard designed to further reduce power consumption. APM is a power-management approach defined jointly by Microsoft and Intel. An increasing number of software packages support APM to take advantage of its power-saving features and to allow greater system availability without degrading performance.

  • Page 39: System Utilities

    Chapter 2 System Utilities The computer comes preloaded with the following softwares: Windows 98 or Windows NT operating system Hardware BIOS setup utility Support for LDCM (LANDesk Client Manager) System utilities, drivers and application software Note: To access Windows 98 or Windows NT software applications, click on the Start button and select the application folder.

  • Page 40: Phdisk

    PhDISK The PhDISK utility allows your computer to enter Hibernation mode. Before entering Hibernation mode, your computer saves all necessary information into a file or partition created by PhDISK, then shuts off power to all system components. On the next start-up, the computer reloads the information from the PhDISK file or partition and resumes from where you left off.

  • Page 41: Notebook Manager

    Notebook Manager The computer has a built-in system setup program called Notebook Manager. The Windows-based Notebook Manager allows you to set passwords, the start-up sequence of the drives, and power management settings. It also shows current hardware configurations. Note: Certain hot key functions are disabled when you access the notebook manager, because these functions are also found in the notebook manager.

  • Page 42: Information Viewer

    Information Viewer Information Viewer summarizes and lists information about the specifications and settings of the different components of your computer. Note: Items in this table may differ slightly from the ones on-screen. Item Description Brand, type and clock speed of the CPU (Central Processing Unit) Total Memory Total amount of main memory (in megabytes)

  • Page 43: Boot Sequence

    Boot Sequence Boot Sequence defines the boot sequence to follow when your computer boots up. The Boot Sequence screen displays the bootable devices in your computer and the order in which the booting sequence will occur. The devices include the following: Floppy Drive IDE Hard Drive CD-ROM/DVD-ROM Drive (for bootable AcerMedia Bay modules)

  • Page 44: Password

    Password Password is used to set, modify or delete the password(s) for your computer. There are two passwords used in the system: Supervisor Password. The Supervisor Password prevents unauthorized access to sensitive parameters in the Notebook Manager and BIOS Utility. It also prevents unauthorized access to your computer at system start-up and at resume from Standby/Hibernation or Sleep mode.
  • Page 45 your Supervisor Password. 4. Click in the Confirm Password textbox and retype the password. 5. Click on OK to set the new password. Note: To change a password, follow the same steps used to set a password. To remove a password, follow the same steps used to set a password but leave both textboxes blank.

  • Page 46: Power Management

    Power Management Power Management is used to set various settings related to power management. This includes the following power-saving-related features: Item Description Enable modem ring Select to allow the computer to wake up from Standby resume on indicator mode when an incoming modem ring is detected. Enable wake on LAN Select to allow the computer to wake up from Standby mode by a remote computer.

  • Page 47: Display Device

    Display Device Display Device is used to control various settings related to display device(s), such as the display brightness level. The items in this screen include: Boot Display Device. Sets the default display device on boot-up. Switching Display Device. Sets the current display device. Note: Make sure an external monitor is connected before External monitor is selected.

  • Page 48: Line-In/Microphone

    Line-in/Microphone Line-in/Microphone is used to set the input source from the computer’s line- in/microphone-in jack. Click on the radio button of the desired item, then click on Apply to accept the setting. System Utilities...

  • Page 49: Setup Utility

    Setup Utility The Setup Utility is a hardware configuration program built into your computer’s BIOS (Basic Input/Ouput System). Your computer is already properly configured and optimized, and you do not need to run this utility. However, if you encounter configuration problems, you may need to run Setup.

  • Page 50: Main

    Main The Main screen contains parameters involving basic computer settings and hardware information. System Utilities...
  • Page 51 The table below describes the parameters in this screen. Settings in boldface are the default and suggested parameter settings. Parameter Description System Time Sets the system time. Format: HH:MM:SS (hour:minute:second) System Date Sets the system date. Format: DD/MM/YYYY (day/month/year) Floppy Disk A Selects the floppy disk drive type.
  • Page 52 Hard Disk 0 Submenu The Hard Disk 0 submenu allows you to set parameters related to your hard disk. Press Enter to access this submenu. The table below describes the parameters in this screen. Settings in boldface are the default and suggested parameter settings. Parameter Description Type...
  • Page 53 CD-ROM Submenu The CD-ROM submenu allows you to set parameters related to the CD-ROM drive (or other drive installed in the AcerMedia Bay). Press Enter to access this submenu. The table below describes the parameters in this screen. Settings in boldface are the default and suggested parameter settings.
  • Page 54 Boot Sequence Submenu The Boot Sequence submenu allows you to set the boot sequence of the bootable devices in your computer. Press Enter to access this submenu. The computer boots-up using the sequence specified in this submenu. To set the boot sequence, use the plus/minus (+-) keys. Boot Devices Description Removable Devices...

  • Page 55: Advanced

    Advanced Caution: The parameters in this screen are for advanced users only. You do not need to change the values in this screen because these values are already optimized. The Advanced screen contains parameters that are related to computer hardware. The table below describes the parameters in this screen.

  • Page 56: Security

    Parameter Description Boot Display Sets the display on boot-up. When set to Auto, the computer automatically determines the display device. If an external display device (e.g., monitor) is connected, it becomes the boot display; otherwise, the computer LCD is the boot display. When set to Both, the computer outputs to both the computer LCD and an external display device if one is connected.
  • Page 57 The table below describes the parameters in this screen. Settings in boldface are the default and suggested parameter settings. Parameter Description Supervisor When set, this password protects the computer and this Setup Password is Utility from unauthorized entry. It also protects certain parameters in the Setup Utility.
  • Page 58 Setting a Password Follow these steps: 1. Set Password parameter (Supervisor or User) and press the Enter key. The set password box appears: 2. Type a password. The password may consist of up to seven alphanumeric (A-Z, a-z, 0-9) characters. Important: Be very careful when typing your password because the characters do not appear on the screen 3.

  • Page 59: Power

    Power The Power Saving screen contains parameters that are related to power- saving and power management. The table below describes the parameters in this screen. Settings in boldface are the default and suggested parameter settings. Note: If your system has ACPI, all power management functions are taken care of by Windows 98.
  • Page 60 Parameter Description Resume On When enabled and the system resume date and time are Time valid, the computer resumes (wakes up) at the set time and date. Options: Disabled or Enabled When enabled, the Resume Time and Resume Date parameters appear. Set the time and date the computer resumes at.

  • Page 61: Exit

    Exit When you select the Exit menu or press Esc from any screen, the Exit options screen displays. The table describes the parameters in this screen. Parameter Description Exit Discarding Discards any changes made, exits the Setup utility and Changes reboots.
  • Page 62 System Utilities...

  • Page 63: Removal And Replacement

    Chapter 3 Removal and Replacement This chapter contains procedures on how to disassemble the notebook computer for maintenance and troubleshooting. To disassemble the computer, you need the following tools: Wrist grounding strap and conductive mat for preventing electrostatic discharge Two flat-bladed screwdrivers Phillips screwdriver Hexagonal screwdriver Tweezers...
  • Page 64 Removal and Replacement...

  • Page 65: External Module Replacement

    External Module Replacement Reassembling the Modem Board 1. Connect the modem cable to the system board. 2. Insert the modem board back into its socket. 3. Put on the modem board cover. 4. Secure the modem board cover with its original screw. Installing Memory 1.

  • Page 66: Disassembling The Cd-Rom Drive

    3. Secure the DIMM cover with its original screw. Disassembling the CD-ROM Drive 1. Push the CD-ROM drive locker forward and carefully pull out the CD-ROM module. 2. To disassemble the CD-ROM module, remove the 2 screws from both sides of the CD-ROM module and the screw on the CD-ROM chassis. 3.

  • Page 67: Removing The Hard Disk Drive

    4. Disconnect the cable of the CD-ROM drive. Removing the Hard Disk Drive 1. Use a flat-bladed screwdriver to remove the screw of the hard disk drive. 2. Carefully, pull out the hard disk drive to remove it. Disassembling the Hard Disk Drive 1.

  • Page 68: Removing And Replacing The Battery Pack

    3. Remove the hard disk drive from it’s shield plate. 4. Disconnect the hard disk cable from the hard disk drive. 5. To reconnect the hard disk cable, be sure that the 1st pin is aligned up as indicated. Removing and Replacing the Battery Pack 1.
  • Page 69 2. Pull out the battery pack. 3. Reinsert the battery pack by sliding it back in. 4. Slide the battery compartment cover into its place. Chapter 3...

  • Page 70: Removing The Keyboard

    Removing the Keyboard 1. Slide out the hinge covers on both sides of the notebook. 2. To remove the middle cover, use a flatbladed screwdriver to release the latches as shown. 3. Lift the middle cover away Removal and Replacement...
  • Page 71 4. Lift the keyboard up and outward to expose the keyboard connector at CN20. 5. Remove the keyboard by carefully releasing the connector. 6. In reassembling the keyboard, be sure that the latches are lined up as indicated blew. Chapter 3...
  • Page 72 7. To replace the middle cover, be sure that the latches are lined up with the upper case as indicated below. 8. Press the middle cover to lock it in place. Removal and Replacement...

  • Page 73: Removing The Lcd

    Removing the LCD 1. Disconnect the internal microphone cable at CN4 from the system board. 2. Remove the LED cable at CN8 from the system board. 3. Remove the two screws of the LCD FPC cable at CN2 from the LVDS board.
  • Page 74 4. Remove the LCD FPC cable cover from the system board. 5. Disconnect the LCD FPC cable from the LVDS board. 6. Use two flatbladed screwdrivers to remove the LVDS board at CN13 from the system board. Removal and Replacement...
  • Page 75 7. Remove the two screws at the base and at the back of the lower case. 8. Carefully, detach the LCD module from the main unit. Chapter 3...

  • Page 76: Removing The Cpu

    Removing the CPU 1. To remove the CPU board, first remove the five screws of the CPU heat sink. 2. Lift the heat sink away. 3. Use this special tool placing it under the CPU board and aligning it with the white line, then lift up the CPU board to bring it out from the system board.
  • Page 77 5. Reinsert the CPU board at CN17 of the system board by aligning the CPU board with the two pillars of the MMO shield as shown below. 6. Use this special tool to press down and completely connect the CPU board to its socket.

  • Page 78: Disassembling The Upper Case

    Disassembling the Upper Case 1. To detach the upper case, first remove the two screws from the upper heat sink then lift the upper heat sink up and out. 2. Remove the floppy cable at CN18 from the system board. 3.
  • Page 79 4. Remove the 11 screws from the upper case and the base of the unit. 5. Disconnect the suspend cable at CN9, the left channel speaker at CN10 and the right channel speaker at CN11. 6. Remove the upper case from the lower case. 7.

  • Page 80: Removing The Speakers

    Removing the Speakers 1. Remove the two screws of the right channel speaker, then lift it away. 2. To remove the right channel speaker from the upper case, release its cable from the latches. 3. Remove the two screws from the left channel speaker, then lift it away. Removal and Replacement...

  • Page 81: Removing The Touchpad Bracket

    Removing the Touchpad Bracket 1. Remove the four screws of the touchpad bracket. 2. Detach the bracket from the side latches. 3. Detach the touchpad cable from the touchpad board. 4. Remove the touchpad board from the upper case. Chapter 3...

  • Page 82: Disassembling The Lower Case

    Disassembling the Lower Case Removing the Floppy Disk Drive 1. Remove the three screws of the floppy disk drive. 2. Lift the floppy disk drive from the lower case. 3. Remove the two screws from the floppy frame. 4. Separate the floppy disk drive from its frame. 5.

  • Page 83: Disassembling The Fan

    Disassembling the Fan 1. Disconnect the fan cable from the system board. 2. Remove the four screws of the MMO shield. 3. Lift the MMO shield away from the lower case. 4. Remove the two screws of the fan. 5. Separate the fan from the MMO shield. Chapter 3...

  • Page 84: Removing The System Board

    Removing the System Board 1. Remove the FIR lens from the lower case. 2. Disconnect the DC-DC charger between the two pins at CN22 and CN23 from the system board. 3. Remove the system board away from the lower case. Removal and Replacement...

  • Page 85: Removing The Ide Board

    Removing the IDE Board 1. Remove the IDE board at CN30 from the system board. Removing the PCMCIA Card 1. Remove the four screws of the PCMCIA card. 2. Remove the PCMCIA card at CN16 from the system board. 3. This completes the disassembly procedure of the lower case. Chapter 3...

  • Page 86: Disassembling The Lcd

    Disassembling the LCD 1. Remove the two cushions and three mylar stickers from the LCD bezel. 2. Remove the five screws on the LCD bezel. 3. Carefully, pull out the display bezel. Removal and Replacement...
  • Page 87 4. Remove the two screws of the LED board. 5. Pull out the LED board from the LCD. 6. Disconnect the LED board cable from the LED board. 7. Remove the internal microphone from the LCD. 8. Remove the six screws from the inverter board. 9.
  • Page 88 10. Remove the inverter board by disconnecting the LCD FPC cable. 11. Remove the LCD power cable. 12. Peel the tape off. 13. Disconnect the LCD FPC cable from the LCD. Removal and Replacement...

  • Page 89: Chapter 4 Troubleshooting

    TravelMate 720 has system checkouts, a list of error codes and messages with corresponding actions, and procedures for undetermined problems to help with troubleshooting. Note: The diagnostic tests are intended to test only Acer products. Non- Acer products, prototype cards, or modified options can give false errors and invalid system responses.
  • Page 90 Use the following table with the verified symptom to determine which page in this chapter to go to. Search the symptoms column and find the description that best matches your symptom; then go to the page shown in the “Go To” column.

  • Page 91: Diskette Drive Checkout

    Diskette Drive Checkout Do the following to isolate the problem to a controller, driver, or diskette. A write-enabled, diagnostic diskette is required. Note: Make sure that the diskette does not have more than one label attached to it. Multiple labels can cause damage to the drive or cause the drive to fail.

  • Page 92: Keyboard Or Auxiliary Input Device Checkout

    Keyboard or Auxiliary Input Device Checkout Remove the external keyboard if the internal keyboard is to be tested. If the internal keyboard does not work or an unexpected character appears, make sure that the flexible cable extending from the keyboard is correctly seated in the connector on the sub card.

  • Page 93: Memory Checkout

    Memory Checkout DIMM cards are available for increasing memory capacity. Slot 1 (MB) Slot 2 (MB) Total Memory (MB) Memory errors might stop system operations, show error messages on the screen, or hang the system. 1. Boot from the diagnostics diskette and start the PQA program (please refer to “Running PQA Diagnostics Program”).

  • Page 94: Power System Checkout

    Flash Memory Update: The flash memory update is required for the following conditions: New versions of system programs New features or options Power System Checkout To verify the symptom of the problem, power on the computer using each of the following power sources: 1.
  • Page 95 Checking Operational Charging: To check operational charging, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer. Perform operational charging. If the battery status indicator does not turn on, remove the battery pack and let it return to room temperature.

  • Page 96: Touchpad Checkout

    TouchPad Checkout If the TouchPad does not work, check the configuration in the BIOS program. If the configuration of the TouchPad is disabled, select Enable to enable it. If this does not correct the TouchPad problem, continue with the following. After you use the TouchPad, the pointer drifts on the screen for a short time.

  • Page 97: Symptom-To-Fru Index

    Symptom-to-FRU Index The symptom-to-FRU index lists the symptoms and errors and their possible causes. The most likely cause is listed first. Note: Perform the FRU replacement or actions in the sequence shown in the “FRU/Action” columns. If a FRU replacement did not solve the problem, put the original part back in the computer.
  • Page 98 Symptom / Error FRU / Action in Sequence 0220 Run “Load Setup Defaults” in BIOS Setup Utility. Monitor type does not match CMOS - Run Setup 0230 1. BIOS ROM Shadow RAM Failed at 2. System board offset: nnnn 0231 1.
  • Page 99 Symptom / Error FRU / Action in Sequence 02D0 1. IMM (CPU board) System cache error - Cache 2. System board disabled 02F0 1. IMM (CPU board) CPU ID: 2. System board 02F5 1. DIMM DMA Test Failed 2. IMM (CPU board) 3.
  • Page 100 Symptom / Error FRU / Action in Sequence Power-on indicator on, and 1. Ensure every connection is correct. a blank LCD not POST 2. DIMM 3. Reseat IMM (CPU board) 4. IMM (CPU board) 5. System board Power-on indicator not on, 1.
  • Page 101 Symptom / Error FRU / Action in Sequence Keyboard (one or more keys) 1. Reseat the keyboard cable. does not work. 2. Keyboard 3. System board Power shuts down during 1. Battery operation. 2. AC Adapter 3. DC/DC & Charge board 4.
  • Page 102 Symptom / Error FRU / Action in Sequence In DOS or Windows 1. Speaker multimedia programs, no 2. System board sound comes from the computer. External display does not System board work correctly. USB does not work correctly. System board Print problems 1.

  • Page 103: Intermittent Problems

    Intermittent Problems Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a hardware defect, such as: cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be considered only when a recurring problem exists. When analyzing an intermittent problem, do the following: 1.

  • Page 104: Undetermined Problems

    2. Visually check them for damage. If any problems are found, replace the FRU. 3. Remove or disconnect all of the following devices: a. Non-Acer devices b. Devices attached to the port replicator c. Printer, mouse, and other external devices d.

  • Page 105: Utility Program Diskette

    Utility Program Diskette Setting LCD Panel ID There is an EEPROM in the inverter which stores its supported LCD type ID code. If you replace an LCD with one of a different brand or use a new inverter, the ID information in the inverter EEPROM should be updated. Follow the steps below to see the LCD Panel ID: 1.

  • Page 106: Running The Diagnostics

    Running the Diagnostics Running PQA Diagnostics Program Note: Before running the PQA Diagnostics Program, make sure that the write enable tab of the Diagnostic Program Diskette is set to enabled. P Q A V x _ x x x-x x -x x R e s u lt D ia g S y s In fo...
  • Page 107 Auto Test performs multiple tests of the selected items and automatically checks the selected test items in sequence. Note: PCMCIA Diagnostic Supports the Manual test only. Do not select PCMCIA Diagnostic in Auto Test. Chapter 4...
  • Page 108 The screen below appears if you select AUTO Test. Vx_x xx-xx-xx Result Diag Option SysInfo Exit Diag MANUAL TEST AUTO TEST TEST COUNT VALUE (1...9999) 1 Specify the desired number of tests and press Enter. After you specify the number of tests to perform, the screen shows a list of test items (see below): Vx_x xx-xx-xx Diag...
  • Page 109 PQA Diagnostics Program Error Codes and Messages Error Code Message FRU/Action in Sequence System 16XX Backup battery error Backup battery 1XXX CPU or System board 1. Reload BIOS default setting. error 2. CPU 3. System board 2XXX Memory error 1. Reseat CPU (IMM module). 2.
  • Page 110 Troubleshooting...

  • Page 111: Jumper And Connector Information

    Right Speaker Connector CN21 HDD Connector CN18 FDD Coneector CN17 IMM Connector (MMC 2) CN19 Touchpad Connector CN22& CN23 CN20 Keyboard Connector DC/DC & Charger board Connector CN24 Fan Connector Keyboard BIOS Acer English US English Japanese European Chapter 5...

  • Page 112: Bottom View

    Bottom View CN27 & CN29 CN28 Modem Module Connector DIMM Module Connector CN30 IDE Board Connector Jumper and Connector Information...

  • Page 113: Fru (Field Replaceable Unit) List

    DIFFERENT part number codes to those given in the FRU list of this printed Service Guide. You MUST use the local FRU list provided by your regional Acer office to order FRU parts for repair and service of customer machines.
  • Page 114 Picture Part name Description Part No. CD-ROM ASSY CD ROM 60.47A02.001 BRACKET CHASSIS 700 Processor CPU P II- IC CPU MOBI 01.I0MP2.U0B 300 MHZ PII-300 W/AGP CPU P II- IC CPU MPII- 01.I0MP2.X3A 333MHZ 333 DIXON MMC2 256 CPU P II- IC CPU MPII- 01.I0MP2.X30 333MHZ...
  • Page 115 Picture Part name Description Part No. FDD FPC C.A FPC FDD C.A FPC FDD CABLE HDD MODULE 6M.42C01.001 MODULE 6GB IBM HDD MODULE 6M.47A03.021 MODULE 4GB IBM HDD 6GB HDD 2.5 56.02A04.002 6480MB IBM/ DADA26480 HDD 4GB HDD 4090MB 56.02834.071 IBM/DTCA 20490 IDE HDD FPC...
  • Page 116 Picture Part name Description Part No. Keyboard NSK-84A41 91.78S07.041 BOARD US 13.3“ LCD ASSY LCD 6M.47A05.021 MOUDLE MODULE 13.3" 13.3" TFT INVERTER 19.21030.191 INVERTER T62.087.C 700 13.3" TFT C.A 15P 2C 50.47A09.002 CABLE 100MM LED 13.3" TFT AN700 C.A 15P 2C 50.47A09.003 CABLE 100MM LED...
  • Page 117 Picture Part name Description Part No. 56.0747A.001 13.3"TFT TX34D62VC1C AC 13.3 TFT LCD FPC ASSY LCD 60.47A07.093 CABLE FPC 13.3TFT 13.3"TFT ASSY LCD 60.42C10.021 PANEL PNL(HIT13.3"T 13.3" TFT FT) 700 ASSY LCD 60.47A09.003 BAZEL BEZEL(13.3") 13.3" TFT ASSY LCD 6M.47A04.021 HINGE HINGE SUPPORT...
  • Page 118 60.42C10.001 PANEL 14.1" 720 14.1" TFT ASSY LCD PNL 60.42C10.002 PANEL 14.1" 720 14.1" TFT ASSY LCD 60.42C12.011 BAZEL BAZEL (ACER) 14.1" TFT 14.1" 720 ASSY LCD 60.42C12.012 BAZEL BAZEL (ACER) 14.1" TFT 14.1" 720 FRU (Field Replaceable Unit) List...
  • Page 119 Picture Part name Description Part No. ASSY HINGE 6M.42C03.001 HINGE PACK 14.1 EXT PACK 14.1" SYSTEM BOARD MAIN 720 MAIN 55.42C01.001 BOARD BOARD PCMCIA SKT CARDBUS 22.10172.051 SOCKET IC10S-136PL- PEJL MECHANICAL PARTS BRACKET FDD 33.47A03.002 BRACKET SECC T-0.8 HEAT SINK ASSY U HSINK 60.42C08.001 MMO HEAT...
  • Page 120 Picture Part name Description Part No. HINGE CAP HINGE (R) 42.47A14.001 COVER (R) HINGE CAP HINGE 42.47A15.001 COVER (L) CAP (L) PC MIDDLE ASSY MIDDLE 60.47A22.001 COVER CVR 700 WITHOUT NAME PLATE BATTERY COVER 42.47A17.002 DOOR BATTERY PC ASSY SIR- 60.47A10.002 COVER LENS 700...
  • Page 121 Picture Part name Description Part No. UPPER ASSY U CASE 60.42C06.001 CASE UPPER ASSY U CASE 60.42C06.002 CASE COVER W.A CVR SW/ 50.47A10.001 SWITCH 2P 45MM AN700 SPEAKER SPK 1W 3520- 6M.47A09.001 MODULE 7CC W/CABLE 700DX POWER W.A CVR SW/ 50.47A10.001 SWITCH 2P 45MM...
  • Page 122 Picture Part name Description Part No. DC-DC DC-DC 19.21030.331 CHARGER CHARGER BOARD T62.085.C V.6 MODEM MODEM 56K 54.09011.211 BOARD AMBIT/ (AMBIT) J07.017.C.00 MODEM MODEM PCI 54.09232.011 BOARD CIS/BM- 5614BMDG POWER ADAPTER ADT 90-264V 25.10064.021 60W ADP- 60HB V.A2 ADAPTER ADT 90-270V 25.10064.031 ADP-60JB V.A BATTERY...
  • Page 123 60.42C11.001 PAD FPC TOUCHPAD CABLE FPC 720 OTHERS FAN 30*30*10 23.10033.001 U12QFB3E65 FAN 30*30*10 23.10033.031 UDPFFMH01H MICROPH MICROPHONE 6M.47A08.001 ACER 700DX MODULE SPEAKER SPK 1WV3520- 6M.47A09.001 MODULE 7CC W/CABLE 700DX BTY LI 3V 23.20004.091 BATTERY CR1220 36MAH SCREW SCREW SPC 86.00074.330...
  • Page 124 Picture Part name Description Part No. SCREW SCREW 86.1A323.150 M2.5*L15 BLW SCREW SCREW 86.1A323.180 M2.5*18L (B/ ZN) 700 SCREW SCREW MACH 86.1A522.8R0 PAN M2*8L SCREW SCREW NUT 87.00010.320 MMO HEX STEEL SCREW NUT MMO HEX 87.00010.321 STEEL SCREW SCREW MACH XB6-7200-407 M2*4 NI SHIGA SCREW...
  • Page 125 PLT NAME 40.42B01.071 NAME (721TX)PC 31.7*5.6 720 11, M LOGO PLATE 40.43A02.001 NAME(LOGO) PC AN390 PLATE PLT NAME 40.48406.721 NAME (720TE ACER) PC 720 BASE FOOT PU 47.45001.001 GRIP BLACK 350P PCMCIA SPRING 34.47A40.001 DOOR PCMCIA SPRING DOOR SWP UPPER...
  • Page 126 Picture Part name Description Part No. PCMCIA DOOR(L) 42.46919.001 DOOR PCMCIA ABS LOWER 050 AN370 RECOVERY CD Recovery CD 90.42C39.103 English-ST W98 (ENG) TM720 Recovery CD 90.42C39.G04 German W98 (GER) TM720 W98 Italian Recovery CD 90.42C39.I03 W98 (ITA) TM720 W98 Sp/ Recovery CD 90.42C39.S02 W98 (SP/Por)
  • Page 127 Picture Part name Description Part No. Recovery CD 90.42C39.HK1 Traditional W98 (TC-HK) Chinese- TM720 Recovery CD 90.42C39.R01 Russian W98 (RUS) TM720 Recovery CD 90.42C39.T01 Turkish W98 (TUR) TM720 W98 Thai Recovery CD 90.42C39.L01 W98 (THAI) TM720 Recovery CD 90.42C39.101 English- NT4 (ENG) TM720 Recovery CD...
  • Page 128 FRU (Field Replaceable Unit) List...

  • Page 129: Appendix A Model Definition And Configuration

    Appendix A Model Definition and Configuration TravelMate 720 Model Number Define Model ROM/ Memory Battery Number Type Speed 720TX 14.1” PII-300/ 64MB Li-Ion 721TX 14.1” PII-333/ 64MB Li-Ion 721TXV 14.1” PII-333/ 64MB 2XDVD Li-Ion 722TX 14.1” PII-366/ 64MB 10GB Li-Ion 722TXV 14.1”...
  • Page 130 Model Definition and Configuration...

  • Page 131: Appendix B Test Compatible Components List

    Appendix B Test Compatible Components List TravelMate720 compatibility is tested and verified by Acer's internal testing ® department. The PCMCIA functions are tested under Windows ® ® (4.00.950C), Windows 98 and Windows NT 4.0 environments. In addition to these tests, Long Run tests and Year 2000 Compliancy have been verified, too.

  • Page 132: Pcmcia

    PCMCIA PCMCIA, PM Test Cards Win95 Win98 WinNT4.0 Memory cards Pass Pass Pass LAN cards Pass Pass Pass Modem cards Pass Pass Pass Combo cards Pass Pass Pass ZV cards Pass Pass Capture cards Pass Pass SCSI cards Pass Pass Pass Cardbus cards Pass...
  • Page 133 ed for Year2000 Compliance CIA Cards Test Type Name Model No. ATA Flash Viking ATA Flash Card 16MB ATA Flash Viking ATA Flash Card 4MB ATA Flash Epson 5MB Flash ATA 502SD00 ATA Flash Epson 1MB Flash CardBus 3COM/Megaherts 10/100 LAN 3CCFE575BT CardBus CardBus...

  • Page 134: Long Run

    Long Run Item Win95 Win98 WinNT4.0 Long Run 4 hr Pass Pass Pass Year2000 Compliance Test Item Description Result RTC test Pass Pass Test Compatible Components List...

  • Page 135: Appendix C Online Support Information

    Acer CSD Taiwan. Acer's website offers you convenient and valuable support resources whenever you need them. You can find information on all of Acer's Notebook, Desktop and Server models including; Service guides for all models User's manuals...
  • Page 136 Online Support Information...
  • Page 137 Index 16550 UART 19 Boot Sequence 35 brightness hot keys 9 setting in Notebook AC Adapter 25 Manager 39 ACPI 30 ACPI. See Advanced Configura- caps lock 5 tion and Power Interface on indicator 4 Advanced 47 CardBus PC Card 1 Advanced Configuration CCFT 24...
  • Page 138 DC-DC Converter 23 External Module DC-in jack 11 Replacement 57 Desktop Management Disassembling the CD-ROM Interface 31 Drive 58 Diagnostics 98 Disassembling Hard Disk Drives Disk Drive 59 Read/write heads 21 Installing Memory 57 Disk drives 21 Reassembling the Modem Read/write heads 21 Board 57 Rotational speed (RPM) 21...
  • Page 139 Hard Disk 0 Submenu 44 lock keys 5 Hard Disk Drive Windows keys 7 Disassembly 59 Hard disk drives 21 LCD 24 Hibernation mode 29 Removing the LCD 65 conditions 29 Resolution 24 entering 29 LCD Panel ID hot key 8 Setting 97 resuming from 29 LEDs 4...
  • Page 140 Boot Sequence 35 managing in Setup Utility 51 Display Device 39 Power and Standby Indicators 4 Hot key 8 Power Management 2, 27, 38 Information Viewer 34 power management 27 Password 36 ACPI 30 Power Management 38 advanced 30 starting 33 Power Management Modes 27 Num lock 5 Hard Disk Standby Mode 27...
  • Page 141 CD-ROM submenu 45 hot key 9 entering 41 Touchpad Bracket Exit menu 53 Removal 73 Hard Disk 0 submenu 44 TPM 127 Main menu 42 Troubleshooting 81 navigating 41 Power menu 51 Security menu 48 Undetermined Problems 96 SGRAM 2 Universal Serial Bus (USB) 1 Simultaneous Display 2 Upper Case...
  • Page 142 Index...

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