Acer TravelMate 420 Service Manual
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Acer TravelMate 420 Service Manual

Acer TravelMate 420 Service Manual

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Acer TravelMate 420 Series
Service Guide
Service guide files and updates are available
on the ACER/CSD web; for more information,
please refer to
http://csd.acer.com.tw
PART NO.: VD.T19V5.001
PRINTED IN TAIWAN

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  • Page 1 Acer TravelMate 420 Series Service Guide Service guide files and updates are available on the ACER/CSD web; for more information, please refer to http://csd.acer.com.tw PART NO.: VD.T19V5.001 PRINTED IN TAIWAN...

  • Page 2: Revision History

    Revision History Please refer to the table below for the updates made on TravelMate 420 service guide. Date Chapter Updates...
  • Page 3 Copyright Copyright © 2002 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 4 Conventions The following conventions are used in this manual: SCREEN MESSAGES NOTE WARNING CAUTION IMPORTANT Denotes actual messages that appear on screen. Gives bits and pieces of additional information related to the current topic. Alerts you to any damage that might result from doing or not doing specific actions.
  • Page 5 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 7: Table Of Contents

    Chapter 1 System Specifications Features............1 System Block Diagram .
  • Page 8 TravelMate 420 Series ........

  • Page 9: Chapter 1 System Specifications

    S-video (NTSC/PAL) output Connectivity High-speed fax/data modem port Ethernet/Fast Ethernet port 3 USB (Universal Serial Bus) ports IEEE 1394 port SD/MMmC memory slot Acer EasyPort port replicator Bluetooth ready (optional) Human-centric design and ergonomics 4-way scroll button Chapter 1 Chapter 1...

  • Page 10: Keyboard And Pointing Device

    One headphone/speaker/line-out jack (3.5mm mini jack) One microphone/line-in jack (3.5mm mini jack) One S-video-out (NTSC/PAL) port Three Universal Serial Bus (USB) ports One IEEE 1394 port 100-pin port replicator connector for Acer EasyPort One SD/MMC slots One memory stick slot Chapter 1...

  • Page 11: System Block Diagram

    System Block Diagram File Name : LA-1511 Fan Control Conn. CRT Connector LCD Connector VGA Board TV-OUT Connector Mini PCI Conn. IDSEL:AD16 IDSEL:AD20 (PIRQA#,GNT#0,REQ#0) (PIRQA#,GNT#2,REQ#2) TI TSB43AB22 1394 DC/DC Interface Suspend Power Circuit DC/DC Chapter 1 Mobile Northwood CPU Bypass &...

  • Page 12: Board Layout

    Board Layout Top View 23-JP1 Speaker L connector 20-JP3 VGA board to B connector 24-JP4 Speaker R connector 21-JP5 Keyboard connector 25-JP10 Audio out jack 30-SW2 BT switch 34-JP7 Touchpad switch PCB 39-JP33 Inverter connector 19-JP2 VGA board to B connector 22-JP6 SD card connector 28-JP12, JP32, JP39...

  • Page 13: Bottom View

    Bottom View 15-JP37 Docking connector 9-JP21 PCMCIA connector 1-U41 CPU socket 16-JP22 Main fan connector 4-PCN4 Battery connector 3-JP28 DDR connector 35-JP26 Battery connector 6-JP24 Mini PCI connector Battery LED 8-JP30 1394 connector 32-JP40 Memory stick connector Chapter 1 13-JP14 VGA port connector 14-JP15 Printer port connector...

  • Page 14: Outlook View

    Outlook View A general introduction of ports allow you to connect peripheral devices, as you would with a desktop PC. Front View Icon Item Display screen Also called LCD (liquid-crystal display), displays computer output. Power Button Turns on the computer power. Speakers Outputs sound.
  • Page 15 Chapter 1 Palmrest Comfortable support area for your hands when you use the computer. Outputs sound. Status indicators LEDs (light-emitting diode) that turn on and off to show the status of the computer, its functions and components. Microphone Inputs sounds and voice into your computer.

  • Page 16: Left Panel

    Left Panel Icon Power jack Security keylock Item Description Connects to an AC adapter. Connects to a Kensington-compatible computer security lock. Chapter 1...

  • Page 17: Right Panel

    Right Panel Icon Chapter 1 Item USB port Connects to Universal Serial Bus devices (e.g., USB mouse, USB camera). Line-in/Mic-in jack Accepts audio line-in devices (e.g., audio CD player, stereo walkman). Selection is through the OS Windows mixer. Speaker/Headphone- Connects to audio line-out devices (e.g., out jack speakers, headphones) Modem jack...

  • Page 18: Rear Panel

    Rear Panel Icon Item Expansion port I/O replicator or EasyPort expansion devices. External display port Connects to a display device (e.g., external monitor, LCD projector). Parallel port Connects to a parallel device (e.g., parallel printer). S-video Connects t a television or display device with S-video input.

  • Page 19: Bottom Panel

    Bottom Panel Icon Battery bay Battery release latches Unlatches the battery to remove the battery Memory compartment Cooling fan AcerMedia drive bay release latch Hard disk bay Chapter 1 Item Description Houses the computer’s battery pack. pack. Houses the computer’s main memory. Helps keep the computer cool.

  • Page 20: Indicators

    Indicators The computer has seven easy-to-read status icons below the display screen. The status LCD displays icons that show the status of the computer and its components. Icon Function Power Sleep Battery charge Wireless communication Caps lock Num lock Media activity Description Lights green when the computer is on.

  • Page 21: Lock Keys

    Lock Keys The keyboard has three lock keys which you can toggle on and off. Lock Key Caps Lock When Caps Lock is on, all alphabetic characters typed are in uppercase. Num lock When Num Lock is on, the embedded keypad is in (Fn-F11) numeric mode.

  • Page 22: Embedded Numeric Keypad

    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 Number keys on embedded Type numbers in a normal...

  • Page 23: Windows Keys

    Windows Keys The keyboard has two keys that perform Windows-specific functions. Icon Windows logo Application Chapter 1 Description Start button. Combinations with this key perform special functions. Below are a few examples: + Tab (Activates next taskbar button) + E (Explores My Computer) + F (Finds Document) + M (Minimizes All) j + Windows logo key + M (Undoes Minimize All)

  • Page 24: Hot Keys

    Hot Keys The computer uses hotkey or key combinations to access most of the computer’s controls like sreen brightness, volume output. To activate hot keys, press and hold the Fn key before pressing the other key in the hot key combination. Hot Key Icon Fn-F1...
  • Page 25 Hot Key Icon Fn-y Fn-x Fn-z Chapter 1 Function Volume down Decreases the speaker volume. Brightness up Increases the screen brightness. Brightness down Decreases the screen brightness Description...

  • Page 26: The Euro Symbol

    The Euro Symbol If your keyboard layout is set to United States-International or United Kingdom or if you have a keyboard with a European layout, you can type the Euro symbol on your keyboard. NOTE: For US keyboard users: The keyboard layout is set when you first set up Windows. For the Euro symbol to work, the keyboard layout has to be set to United States-International.

  • Page 27: Launch Keys

    Launch Keys Located at the top of keyboard are five buttons. These buttons are called launch keys. They are designated as P1, P2, P3 Email button and Web browser button. NOTE: To the left of these five launch keys is the wireless communication button. This wireless communication button works for model with 802.11b wireless LAN only.

  • Page 28: E-Mail Detection

    E-Mail Detection Click right button at the Launch Manager icon on the taskbar and click on E-Mail Detection. In this dialog box, you have the option to enable/disable mail checking, set the time interval for mail checking, etc. If you already have an email account, you can fill in User Name, Password and POP3 Server in the dialog box.

  • Page 29: Touchpad

    Touchpad The built-in touchpad is a pointing device that senses movement on its surface. This means the cursor responds as you move your finger on the surface of the touchpad. The central location on the palmrest provides optimal comfort and support. NOTE: If you are using an external USB mouse, you can press Fn-F7 to disable the touchpad.
  • Page 30 Function Left Button Scroll NOTE: Keep your fingers dry and clean when using the touchpad. Also keep the touchpad dry and clean. The touchpad is sensitive to finger movements. Hence, the lighter the touch, the better the response. Tapping too hard will not increase the touchpad’s responsiveness. Right Button Scroll Button Click and hold...

  • Page 31: Hardware Specifications And Configurations

    Hardware Specifications and Configurations Processor Item CPU type CPU package CPU core voltage CPU I/O voltage BIOS Item BIOS vendor BIOS Version BIOS ROM type BIOS ROM size BIOS package Supported protocols BIOS password control Second Level Cache Item Cache controller Cache size 1st level cache control 2nd level cache control...

  • Page 32: Memory Combinations

    Memory Combinations Slot 1 256/512MB 256/512MB 256/512MB 256/512MB NOTE: Above table lists some system memory configurations. You may combine DIMMs with various capacities to form other combinations. . LAN Interface Item Supports LAN protocol LAN connector type LAN connector location Modem Interface Item Data modem data baud rate (bps)
  • Page 33 DVD-ROM Interface Item Vendor & model name Performance Specification Transfer rate (KB/sec) Data Buffer Capacity Interface Applicable disc format Loading mechanism Power Requirement Input Voltage Vendor & model name Performance Specification Transfer rate (KB/sec) Data Buffer Capacity Interface Applicable disc format Loading mechanism Power Requirement Input Voltage...
  • Page 34 DVD-ROM Interface Item Loading mechanism Power Requirement Input Voltage Vendor & model name Performance Specification Transfer rate (KB/sec) Data Buffer Capacity Interface Applicable disc format Loading mechanism Power Requirement Input Voltage Vendor & model name Performance Specification Transfer rate (KB/sec) Data Buffer Capacity Interface Applicable disc format...

  • Page 35: Audio Interface

    DVD-ROM Interface Item Transfer rate (KB/sec) Data Buffer Capacity Interface Applicable disc format Loading mechanism Power Requirement Input Voltage Audio Interface Item Audio Controller Audio onboard or optional Mono or Stereo Resolution Compatibility Mixed sound source Sampling rate Internal microphone Internal speaker / Quantity Supports PnP DMA channel Supports PnP IRQ...
  • Page 36 Right panel No ZV support Yes (IRQ11) Controller Brookdale MP+ICH3-M SMsC 47N227, LPC interface Realtek ALC202 Codec ATI M7-C ICH3-M NS 87591 ICH3-M NS 87591 Acer proprietary keyboard w/o launch button embeded 87/88/90 keys with 101/102 key emulation Specification Chapter 1...
  • Page 37 Cell voltage Number of battery cell Package configuration Package voltage LCD Inverter Specification This inverter is designed to light up the CCFL of LCD for TravelMate 420 series notebook. It should be supported the following LCD panels. Supplier Hitachi Hannstar There are two control signals that come form system to control lamp brightness.

  • Page 38: Electrical Characteristics

    Electrical Characteristics Parameter Symbol Input NV_PWR voltage Input current Lamp current Lamp current Frequency Output Pout power η Efficiency Starting voltage Starting time Dispoff# Limited DAC- lamp BRIG maximum current INV_PW signal *Note 4 Lamp I zero-PK current over-shoot Current Waveform factor Unbalance...

  • Page 39: Electrical Specification

    Parameter Symbol Voltage Trise Rise time (Low side) Voltage fall Tfall time (Low side) NOTE: *1. The inverter can work in 7.5V input voltage (continuous), but 7.5V electronic characteristic will not be care. *2. Limited lamp maximum current by DAC_BRIC signal: When DAC_BRIG voltage is 0V and INV_PWM enables (100%), lamp has max.
  • Page 40 All components on inverter board should follow below rules: 1. Component using conditions (component stress) must be within component specification including voltage rating, current rating, temperature etc. 2. Component temperature should follow below: ∆T <=30 degree C, at 25, 35 degree C. Component temperature should be less than 70 degree C inside system at 35 degree C.

  • Page 41: Environmental Requirements

    AC Adapter Item Output Ratings (CV mode) DC output voltage Noise + Ripple Output current Output Ratings (CC mode) DC output voltage Constant output Dynamic Output Characteristics Start-up time Hold up time Over Voltage Protection (OVP) Short circuit protection Electrostatic discharge (ESD) Dielectric Withstand Voltage Primary to secondary Leakage current...

  • Page 42: Mechanical Specification

    One headphone/speaker/line-out jack (3.5mm mini jack), One microphone/line-in jack (3.5mm mini jack), One S-video-out (NTSC/PAL) port, Three Universal Serial Bus (USB) ports, One IEEE 1394 port, 100-pin port replicator connector for Acer EasyPort, One SD/MMC slots, One memory stick slot Recycle plastic PC+ABS 94V0...
  • Page 43 I/O Address Map I/O Address 004E-004F 0050-0053 0060-0060 0061-0061 0062-0062 0063-0063 0064-0064 0065-0065 0066-0066 0067-0067 0070-0077 0080-0080 0081-008F 0090-0091 0092-0092 0093-009F 00A0-00A1 00A4-00A5 00A8-00A9 00AC-00AD 00B0-00B1 00B4-00B5 00B8-00B9 00BC-00BD 00C0-00DF 00F0-00F0 0170-0177 01F0-01F7 0240-0247 0248-024F 0274-0277 0279-0279 0376-0376 0378-037B 03B0-03BB 03B0-03BB 03C0-03DF 03C0-03DF...

  • Page 44: Irq Assignment Map

    I/O Address Map I/O Address 0778-077B 0A79-0A79 0D00-FFFF 1000-107F 1180-11BF 1200-120F 1800-181F 1820-182F 1840-185F 1860-187F 1880-18BF 18C0-18DF 1C00-1CFF 2000-207F 2400-24FF 3000-30FF 3000-3FFF 4000-403F FC00-FCFF FD00-FDFF FE00-FE01 IRQ Assignment Map Interrupt Channel IRQ00 IRQ01 IRQ02 IRQ03 IRQ04 IRQ05 IRQ06 IRQ07 IRQ08 IRQ09 IRQ10 IRQ11...

  • Page 45: Dma Channel Assignment

    IRQ Assignment Map Interrupt Channel IRQ12 IRQ13 IRQ14 IRQ15 DMA Channel Assignment DMA Channel Chapter 1 Function(Hardware) Alps Pointing-device Numeric data processor Primary IDE controller Secondary IDE controller Function(Hardware) ECP Printer Port (LPT1) Standard Floppy Disk Controller Direct Memory Access Controller...
  • Page 46 Chapter 1...

  • Page 47: Chapter 2 System Utilities

    System Utilities BIOS Setup Utility The BIOS Setup Utility is a hardware configuration program built into your computer’s BIOS (Basic Input/ Output 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 48 To choose a parameter, use the cursor up/down keys ( wy). To change the value of a parameter, press p or q. Press ^ while you are in any of the menu options to go to the Exit menu. In any menu, you can load default settings by pressing t. You can also press u to save any changes made and exit the BIOS Setup Utility.

  • Page 49: Info

    Info. This menu provides you the information of the system. Parameter Floppy Drive The Floppy Drive status is auto detected by the system. The information page would display “1.44MB, 3 does not exist. IDE1 Model Name Shows the Model name of HDD installed on Primary IDE master. The system will auto detect the hard disk model name.
  • Page 50 Parameter UUID Number UUID=16bytes. This will be visible only when there is an internal LAN device present. System Memory This field reports the memory size of system base memory. The size is fixed to 640KB. Description Chapter 2...

  • Page 51: Main

    Main The Main screen displays a summary of your computer hardware information, and also includes basic setup parameters. It allows the user to specify standard IBM PC AT system parameters. NOTE: The screen above is for reference only. Actual values may differ. Chapter 2...
  • Page 52 The table below describes the parameters in this screen. Settings in boldface are the default and suggested parameter settings. Parameter System Time Sets the system time. System Date Sets the system date. System Memory This field reports the memory size of system base memory.

  • Page 53: System Devices

    System Devices The System Devices screen contains parameters involving your hardware devices. It also provides advanced settings of the system. The table below describes the parameters in the screen. Settings in boldface are the default and suggested parameter settings. Parameter Internal TouchPad Determines whether or not to disable the internal touchpad of a PS/2 pointing device is connected.

  • Page 54: Security

    Security The Security screen contains parameters that help safeguard and protect your computer from unauthorized use. M a in S ys te m D e vice s E xit U s e r P a s s w o rd is A d m in is tra to r P a s s w o rd is S e t U s e r P a s s w o rd S e t A d m in is tra to r P a s s w o rd...

  • Page 55: Setting A Password

    The table below describes the parameters in this screen. Settings in boldface are the default and suggested parameter settings. Parameter User Password is Supervisor Password is Set User Password Set Supervisor Password Primary Harddisk Security Password on Boot NOTE: When you are prompted to enter a password, you have three tries before the system halts. Don’t forget your password.

  • Page 56: Removing A Password

    Removing a Password Follow these steps: Use the w and y keys to highlight the Set User Password parameter and press the e key. The Set Password box appears: Type the current password in the Enter Current Password field and press e. Press e twice without typing anything in the Enter New Password and Confirm New Password fields.
  • Page 57 If the verification is OK, the screen will display as following. The password setting is complete after the user presses u. If the current password entered does not match the actual current password, the screen will show you the Setup Warning. If the new password and confirm new password strings do not match, the screen will display the following message.

  • Page 58: Boot

    Boot This menu allows the user to decide the order of boot devices to load the operating system. Bootable devices includes the distette drive in module bay, the onboard hard disk drive and the CD-ROM in module bay. Chapter 2...

  • Page 59: Exit

    Exit The Exit screen contains parameters that help safeguard and protect your computer from unauthorized use. The table below describes the parameters in this screen. Parameter Exit Saving Changes Allows the user to save changes to CMOS and reboot the system. Exit Discarding Changes Allows the user Discards changes made and exits System Setup.

  • Page 60: Bios Flash Utility

    Then boot the system from the bootable diskette. The Flash utility has auto-execution function. System Diagnostic Diskette This diagnostic diskette is for the Acer TravelMate 420 series notebook machine. You can find the utility in Service CD kit. It provides the following functions:...
  • Page 61 requirements, your regional office MAY have other diagnostic program. Please contact your regional offices or the responsible personnel/channel to provide you with further technical details. NOTE: For ASSY Function Test Procedure, please prepare the following items for system components test: PC (with FIR port), 1394 HDD, PS2 mouse, PS2 Ext-KB, CRT monitor, USB mouse, CD-ROM, DVD- ROM disc (with data and audio track), external speaker, internal CD-ROM module, internal DVD-ROM module, SD card, MS card, AC adapter (90W), TV.

  • Page 62: Running Diagnostics Program

    Running Diagnostics Program RTC Function Test Run the RTC Function Test program. PIO Loop Back Test Insert PIO loopback fixture to main board PIO connect then run the testing program. CD-ROM Function Test Insert a data CD to CD-ROM drive. Then check the CD-ROM drive function with CD-ROM Function Test. Chapter 2...
  • Page 63 Touchpad and USB Mouse Test This utility can test touchpad and USB ports. The three USB ports locate on the right panel. Please insert a USB mouse to USB port 1, port 2 and port 3. As you run the testing utility, please test port 1 and port 2 first. Move the mouse and click the left and the right button to test its functions.
  • Page 64 Run the Internal Keyboard Test. Press the key one by one to see if it functions well or not. If suspect a certain key has problem, please press “B” key to test the key again. Num/Caps/Scroll Key Lock Test Press the FN+Num/Caps key. Then check if the FN+Num/Caps media LED is emitting or not. Battery (Charge/Discharge) Test Use Battery Test to check AC adapter function and charging LED.
  • Page 65 10. Audio CD Play Function Test Put a music compact disc in CD-ROM drive. Click “Play” button that display on the LCD/or external CRT monitor to play the music disc. Then click on other function keys to test its functions. Click on “QUIT” to exit the testing.
  • Page 66 12. Easy Button Function Test Please press the launch keys and audio controls respectively to see if they work normally. Launch keys locate on the middle cover; audio controls locate on the front panel. Once you press any launch key or audio control, the button displaying on the LCD/CRT monitor will disappear at the same time.
  • Page 67 Run CRT output fucntion test to see if CRT displays well. Please plug in CRT cable to monitor connectorFAN test program to check if fan wire and fan function works normally. Press “Fn+F5” to switch to CRT monitor and LCD. This utility mainly checks if you can be switch to LCD and CRT monitor on this notebook computer. Chapter 2...
  • Page 68 Chapter 2...

  • Page 69: Machine Disassembly And Replacement

    Machine Disassembly and Replacement This chapter contains step-by-step 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 Flat head screw driver Tweezers Plastic screw driver Nut driver...

  • Page 70: General Information

    Unplug the AC adapter and all power and signal cables from the system. Remove the battery pack. NOTE: TravelMate 420 series product uses mylar or tape to fasten the FFC/FPC/connectors/cable, you may need to tear the tape or mylar before you disconnect different FFC/FPC/connectors.

  • Page 71: Disassembly Procedure Flowchart

    Disassembly Procedure Flowchart The flowchart on the succeeding page gives you a graphic representation on the entire disassembly sequence and instructs you on the components that need to be removed during servicing. For example, if you want to remove the system board, you must first remove the keyboard, then disassemble the inside assembly frame in that order.

  • Page 72: Screw List

    Thermal Module Main Board Assembly I/O Bracket Main Board Main Frame MDC Card MDC Cable Screw List Item Description SCREW M2.5X0.45+4A-BNI SAFETY SCREW M2.5X0.45+6FP-ZK(NL) SCREW M2.5X0.45+10FP-ZK(NL) SCREW M2.5X0.45+16FP-ZK (NL) SCREW M2.0X4FP-ZK(H3.5-3.8XT0.6) SCREW M2.5X0.45P+3K-ZK(NL) SCREW M2.0X0.4P+2.3FP-ZK SCREW M3.0X0.8+3K-NL THERMAL SCREW (Front) SCREW M2.0X0.4P+3FP-NI Main Unit Lower Case...

  • Page 73: Removing The Battery Pack

    Removing the Battery Pack Slide the battery latch as the picture shows. Then remove the battery. Chapter 3...

  • Page 74: Removing The Optical Module/Hdd Module And Memory

    Removing the Optical Module/HDD Module and Memory Removing the Optical Module Slide the optical drive latch. Then remove the optical drive. Removing the HDD module Unscrew the two screws that secure the hard disk drive door. Remove the hard disk drive module. Removing the Memory Remove the two screw that secures the RAM door.

  • Page 75: Removing The Keyboard/ Lcd Module And Vga Board

    Removing the Keyboard/ LCD Module and VGA Board Removing the Keyboard Remove the two screws holding the hinge caps then remove the hinge caps. Unscrew the four screws holding the keyboard. Use a tool to press the keyboard lock latch on the right and the left side. Turn over the keyboard as the picture shows.
  • Page 76 Then disconnect the VGA board connector. Tilt the LCD module to 90 degree from the main unit. Remove the LCD module from the main unit. Detach the mylar that fastens then take the cable out of VGA shielding notch. 10. Disconnect the LCD coaxial cable from the VGA board. 11.

  • Page 77: Disassembling The Main Unit

    Disassembling the Main Unit See “Removing the Keyboard/ LCD Module and VGA Board” on page 67 Disconnect the left and the right speaker cable. Disconnect the touchpad FFC. Remove the 12 screws on the lower case. Then detach the lower case from the main unit. Disconnect the antenna line connectors that connects to the mini PCI wireless card.
  • Page 78 10. Release the CPU lock. 11. Remove the CPU from the main unit carefully. 12. Tear off the tape that fastens the antenna line to the main board. Then take the antenna line out from the other side. 13. Remove the screw here. 14.
  • Page 79 22. Unscrew the two screws holding the main board to the main frame. 23. Remove main board from the main frame. 24. Remove the two screws holding the MDC card. 25. Disconnect the MDC card connector and modem wire. Then remove the MDC card. 26.
  • Page 80 33. Release the tape that fasten touchpad button board FFC. Then disconnect the FFC connecting to touchpad button board. 34. Unscrew the two screws that secure the CD player board. 35. Take the CD player board off the lower case. 36.
  • Page 81 43. Disconnect the touchpad button board FFC. 44. Release nine locks that secure the touchpad cover. 45. Detach the touchpad cover. 46. Remove the touchpad. 47. Unscrew the four screws holding the antenna line. Two on each side. 48. Remove the antenna line from the upper case. Chapter 3...

  • Page 82: Disassembling The Lcd Module

    Disassembling the LCD Module Remove the four screwpad then unscrew the four screws on the LCD bezel. Detach the LCD bezel from the lower side of the LCD module carefully.. Unscrew the screw that holds the LCD inverter. Disconnect the inverter board. Remove the inverter wire.

  • Page 83: Disassembling The External Modules

    Disassembling the External Modules Disassembling the HDD Module Remove the screw holding the HDD cover. Take the HDD out of the HDD cover. Remove the four (two on each side) screws on HDD carrier. Remove the HDD from HDD carrier. Disconnect the HDD connector.
  • Page 84 Remove the ODD PCB board. Release the ODD door latch on one side. Then remove the ODD door carefully. Chapter 3...

  • Page 85: Troubleshooting

    Troubleshooting Use the following procedure as a guide for computer problems. NOTE: The diagnostic tests are intended to test this model (TravelMate 420 series). Non-Acer products, prototype cards, or modified options can give false errors and invalid system responses. Obtain the failed symptoms in as much detail as possible.

  • Page 86: System Check Procedures

    System Check Procedures External Diskette Drive Check Do the following steps 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 87: Keyboard Or Auxiliary Input Device Check

    Keyboard or Auxiliary Input Device Check 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 main board. If the keyboard cable connection is correct, run the Keyboard Test.

  • Page 88: Check The Power Adapter

    Check the Power Adapter Unplug the power adapter cable from the computer and measure the output voltage at the plug of the power adapter cable. See the following figure If the voltage is not correct, replace the power adapter. If the voltage is within the range, do the following: Replace the main board.

  • Page 89: Check The Battery Pack

    Check the Battery Pack To check the battery pack, do the following: From Software: Check out the Power Options in control Panel In Power Meter, confirm that if the parameters shown in the screen for Current Power Source and Total Battery Power Remaining are correct.

  • Page 90: Sound Check

    still occurs, continue next step. Replace the CPU with another of the same specifications. If the problems still occurs, go to next step. The main board may be damaged. Replace main board. If the external monitor has the same problem as the internal monitor, the main board may be damaged. Please insert the diagnostic disk and run the display test program and go through the sub-steps under step 2.

  • Page 91: Power-On Self-Test (Post) Error Message

    Power-On Self-Test (POST) Error Message The POST error message index lists the error message and their possible causes. The most likely cause is listed first. NOTE: Perform the FRU replacement or actions in the sequence shown in FRU/Action column, if the FRU replacement does not solve the problem, put the original part back in the computer.

  • Page 92: Index Of Error Messages

    Index of Error Messages Error Message List Error Messages 0200 Failure Fixed Disk 0210 Stucky Key 0211 Keyboard error 0212 Keyboard Controller Failed 0213Keyboard locked - Unlock key switch 0220 Monitor type does not match CMOS - Run SETUP 0230 System RAM Failed at offset: nnnn 0231 Shadow RAM Failed at offset: nnnn 0232 Extended RAM Failed at address line: nnnn Extended RAM test failed 0250 System battery is dead - Replace and run...
  • Page 93 Error Message List Error Messages 02B1 Diskette drive B error 02B2 Incorrect Drive A type - run SETUP 02B2 Incorrect Drive B type - run SETUP 02D0 System cache error - Cache disabled 02F0 CPU ID 02F4 EISA CMOS not writeable 02F5 DMA Test Failed 02F6 Software NMI Failed 02F7 Fail-Safe Timer NMI Failed...

  • Page 94: Index Of Symptom-To-Fru Error Message

    Index of Symptom-to-FRU Error Message LCD-Related Symptoms Symptom / Error LCD backlight doesn't work LCD is too dark LCD brightness cannot be adjusted LCD contrast cannot be adjusted Unreadable LCD screen Missing pels in characters Abnormal screen Wrong color displayed LCD has extra horizontal or vertical lines displayed.
  • Page 95 PCMCIA-Related Symptoms Symptom / Error System cannot detect the PC Card (PCMCIA) PCMCIA slot pin is damaged. Memory-Related Symptoms Symptom / Error Memory count (size) appears different from actual size. Speaker-Related Symptoms Symptom / Error In Windows, multimedia programs, no sound comes from the computer.

  • Page 96: Peripheral-Related Symptoms

    Peripheral-Related Symptoms Symptom / Error System configuration does not match the installed devices. External display does not work correctly. USB does not work correctly Print problems. Keyboard/Touchpad-Related Symptoms Symptom / Error Keyboard (one or more keys) does not work. Touchpad does not work. Modem-Related Symptoms Symptom / Error Internal modem does not work correctly.

  • Page 97: 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: Run the diagnostic test for several times to isolate the problem.

  • Page 98: Undetermined Problems

    System Check” on page 71): Power-off the computer. Visually check them for damage. If any problems are found, replace the FRU. Remove or disconnect all of the following devices: Non-Acer devices Printer, mouse, and other external devices Battery pack Hard disk drive...

  • Page 99: Post Task Routines

    POST Task Routines Code Chapter 4 Beeps Verify Real Mode Disable Non-Maskable Interrupt (NMI) Get CPU type Initialize system hardware Initialize chipset with initial POST values Set IN POST flag Initialize CPU registers Enable CPU cache Initialize caches to initial POST values Initialize I/O component Initialize the local bus IDE Initialize Power Management...
  • Page 100 Code Beeps Check video configuration against CMOS Initialize PCI bus and devices Initialize all video adapters in system QuietBoot start (optional) Shadow video BIOS ROM Display BIOS copyright notice Display CPU type and speed Initialize EISA board Test keyboard Set key click if enabled 2-2-3-1 Test for unexpected interrupts Initialize POST display service...
  • Page 101 Code Chapter 4 Beeps Determine number of ATA drives (optional) Initialize hard-disk controllers Initialize local-bus hard-disk controllers Jump to UserPatch2 Build MPTABLE for multi-processor boards Install CD ROM for boot Clear huge ES segment register Fixup Multi Processor table Search for option ROMs. One long, two short beeps on checksum failure.
  • Page 102 Code Beeps Initialize the chipset Initialize the bridge Initialize the CPU Initialize the system timer Initialize system I/O Check force recovery boot Checksum BIOS ROM Go to BIOS Set Huge Segment Initialize Multi Processor Initialize OEM special code Initialize PIC and DMA Initialize Memory type Initialize Memory size Shadow Boot Block...

  • Page 103: Index Of Flash Bios Error Message

    Index of Flash BIOS Error Message Index of flashing BIOS Error Message using PHLASH.EXE. Error Message BIOS backup not supported in PLATFORM.BIN File Open/Read/Close failed on PLATFORM.BIN Unsupported PLATFORM.BIN file version Device table in PLATFORM.BIN has unsupported flash type Part ID not found in table of supported parts Open/Read failed on BIOS ROM image file File Close failed on BIOS.ROM Cannot flash when Memory Managers (e.g.
  • Page 104 Chapter 4...

  • Page 105: Jumper And Connector Locations

    Jumper and Connector Locations Top View 23-JP1 Speaker L connector 20-JP3 VGA board to B connector 24-JP4 Speaker R connector 21-JP5 Keyboard connector 25-JP10 Audio out jack 30-SW2 BT switch 34-JP7 Touchpad switch PCB Chapter 5 39-JP33 Inverter connector 19-JP2 VGA board to B connector 22-JP6 SD card connector...

  • Page 106: Sw1 Settings (Lid Switch)

    SW1 Settings (Lid switch) Function 1 Function 2 Function 3 SW2 Settings POWER BUTTON Setting NONE STAND BY HIBERNATE Setting ON:SYSTEM ON OFF: SYSTEM OFF Chapter 5...

  • Page 107: Bottom View

    Bottom View 15-JP37 Docking connector 9-JP21 PCMCIA connector 1-U41 CPU socket 16-JP22 Main fan connector 4-PCN4 Battery connector 3-JP28 DDR connector 35-JP26 Battery connector 6-JP24 Mini PCI connector Battery LED 8-JP30 1394 connector 32-JP40 Memory stick connector Chapter 5 13-JP14 VGA port connector 14-JP15 Printer port connector...
  • Page 108 Chapter 5...

  • Page 109: Fru (Field Replaceable Unit) List

    DIFFERENT part number code from 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 110: Exploded Diagram

    Exploded Diagram THE SYSTEM Chapter 6...
  • Page 111 LOGIC UP ASSY Chapter 6...
  • Page 112 LOGIC UP ASSY (Wireless) Chapter 6...
  • Page 113 LCD 14.1” LCD 15” Chapter 6...
  • Page 114 DVD ASSY CD-ROM ASSY Chapter 6...
  • Page 115 Combo ASSY Chapter 6...
  • Page 116 Picture Adapter Battery Boards 252-THE SYSTEM 252-LOGIC UP ASSY AND LOGIC ASSY(WIRE LESS) 251-LOGIC UP ASSY AND LOGIC ASSY(WIRE LESS) 007-LOGIC UP ASSY AND LOGIC ASSY(WIRE LESS) Partname And Description ADAPTER-API 90W (3PIN)/4.74AMP/ AP12AD02-381 ADAPTER - LITEON 90W (3 PIN) / 4.74AMP/PA- 1900-05CA BATTERY LI-ION 9 CELLS-SANYO (2100mAH/ 69.3Wh/ 3UR18650F-3-CPL-BBL)
  • Page 117 Picture Cables 006-LOGIC UP ASSY AND LOGIC ASSY(WIRE LESS) 009-LOGIC UP ASSY AND LOGIC ASSY(WIRE LESS) 005-LOGIC UP ASSY AND LOGIC ASSY(WIRE LESS) 003-THE SYSTEM 003-LOGIC UP ASSY (WIRELESS) Case/Cover/Bracket Assembly 318-THE SYSTEM Chapter 6 Partname And Description FFC-MB TO TOUCHPAD BUTTON BOARD FFC-TOUCHPAD BUTTON BOARD TO TOUCHPAD FFC-TOUCHPAD BUTTON BOARD TO CD...
  • Page 118 Picture 310-THE SYSTEM 305-THE SYSTEM 253-THE SYSTEM 302-THE SYSTEM 001-LOGIC UP ASSY AND LOGIC ASSY(WIRE LESS) 320-THE SYSTEM 010-LOGIC UP ASSY AND LOGIC ASSY(WIRE LESS) Partname And Description LOWER CASE DIMM COVER UPPER CASE (W/SPEAKERS AND HINGE SADDLE) I/O BRACKET UPPER CASE SHIELDING SUPPORT BRACKET VGA SHIELDING...
  • Page 119 Picture 011-LOGIC UP ASSY AND LOGIC ASSY(WIRE LESS) 008-LOGIC UP ASSY AND LOGIC ASSY(WIRE LESS) 309-THE SYSTEM 308-THE SYSTEM Chapter 6 Partname And Description CD-PLAYER SUPPORT TOUCHPAD COVER HINGE CAP-R HINGE CAP-L NORTHWOOD 1.8GHZ/512K/400FSB NORTHWOOD 2.0GHZ/512K/400FSB NORTHWOOD 2.2GHZ/512K/400FSB NORTHWOOD 2.4GHZ/512K/400FSB NORTHWOOD 2.5GHZ/512K/400FSB NORTHWOOD 2.6GHZ/512K/400FSB INTEL PENTIUM 4-1.8GHZ/400FSB...
  • Page 120 Picture HDD/ Hard Disk Drive Partname And Description FDD FPC FDD CASE FDD MYLAR FDD BACK COVER IBM CASCADE HDD 2.5" 20G IC25N020ATCS04-0 07N8325 4200rpm FW: A71A/H32687 IBM CASCADE HDD 2.5" 30G IC25N030ATCS04-0 07N8326 4200rpm FW: A71A/H32687 IBM CASCADE HDD 2.5" 40G IC25N040ATCS04-0 07N8326 4200rpm FW: A71A/H32687 TOSHIBA TITAN HDD 2.5"...
  • Page 121 Picture Keyboard LCD 14.1” AND LCD 15” Chapter 6 Partname And Description HDD COVER TM420 KEYBOARD DARFON ARABIC TM420 KEYBOARD DARFON BELGIUM TM420 KEYBOARD DARFON BRAZILIAN PROTUGESE TM420 KEYBOARD DARFON ACANDAIAN FRENCH TM420 KEYBOARD DARFON Traditional Chiese KB.T1907.005 TM420 KEYBOARD DARFON Czech TM420 KEYBOARD DARFON Danish TM420 KEYBOARD DARFON French TM420 KEYBOARD DARFON German...
  • Page 122 Picture 001-LCD 14.1” AND LCD 15” 008-LCD 14.1” AND LCD 15” 007-LCD 14.1” AND LCD 15” 005-LCD 14.1” AND LCD 15” 004-LCD 14.1” AND LCD 15” 003-LCD 14.1” AND LCD 15” 002-LCD 14.1” AND LCD 15” Partname And Description LCD 14.1" XGA CPT (CLAA141XF01) REV.2 LCD 14.1"...
  • Page 123 Picture 006-LCD 14.1” AND LCD 15” Main Board 251-THE SYSTEM Memory Optical Drive DVD ASSY, CD-ROM ASSY AND COMBO ASSY Chapter 6 Partname And Description LCD COAXIAL CABLE - 14.1" CPT LCD COAXIAL CABLE - 14" AU (B141XN04) LCD COAXIAL CABLE - 14" AU (UB141X01) LCD COAXIAL CABLE - 15"...
  • Page 124 Picture 001-DVD ASSY, CD- ROM ASSY COMBO ASSY 003-DVD ASSY, CD- ROM ASSY COMBO ASSY 002-DVD ASSY, CD- ROM ASSY COMBO ASSY 251-DVD ASSY, CD- ROM ASSY COMBO ASSY Others SYSTEM SYSTEM Partname And Description CD-ROM DRIVE 24X TEAC (CD-224E-C85) DVD-ROM DRIVE 8X TOSHIBA (SR-C2612) DVD-ROM DRIVE 8X LITEON (LSD-081) DVD-ROM DRIVE 8X HITACHI (GDR-8081N)
  • Page 125 Picture 301-THE SYSTEM 306-THE SYSTEM Screws 315-THE SYSTEM 014-LCD 14.1” and LCD 15 313-THE SYSTEM” 312-THE SYSTEM 311-THE SYSTEM 012-CD- ROM ASSY, DVD ASSY and Combo ASSY 020-LOGIC UP ASSY AND LOGIC UP ASSY (WIRELESS) 317-THE SYSTEM 321-THE SYSTEM 013-Combo ASSY (KME) 316-THE SYSTEM...

  • Page 126: Appendix A Model Definition And Configuration

    Model Definition and Configuration TravelMate 420 Series Model Number 422XV P4-2000 uPGA478 422XC P4-2000 uPGA478 422LC P4-2000 uPGA478 426XV P4-2000 uPGA478 426XC P4-2000 uPGA478 426LC P4-2000 uPGA478 427LC P4-2000 uPGA478 Appendix A Memory 14.1 XGA 8X DVD 14.1 XGA 8/16/10/24 combo 15.0 XGA...

  • Page 127: Main Features

    SD/MMmC memory slot Acer EasyPort port replicator Bluetooth ready (optional) 4-way scroll button Sleek, smooth and stylish design Acer FinTouch full-sized curved keyboard Ergonomically-centered touchpad pointing device One type II CardBus PC Card slots Upgradeable memory 84/85/88-key windows keyboard Built-in touchpad pointing device with ergonomic buttons and 4-way integrated scroll key...
  • Page 128 Appendix A...

  • Page 129: Appendix C Test Compatible Components

    Appendix B Test Compatible Components This computer’s compatibility is tested and verified by Acer’s internal testing department. All of its system ® ® ® functions are tested under Windows XP Home, Windows XP Pro and Windows 2000 environment. Refer to the following lists for components, adapter cards, and peripherals which have passed these tests.

  • Page 130: Microsoft® Windows® Xp Home Environment Test

    Canon DeskJet 930C Stylus color 740 Sony 29” television Microsoft MS Natural Keyboard IBM keyboard Dell Quietkey Keyboard Acer 6312-H Mitsumi KPQ-E99ZC-12 Microsoft IntelliMouse Microsoft IntelliMouse Track Ball Logitech Mouse Man (M-CV46) Logitech TrackMan Marble FX (T-CJ12) Logitech TrackMan Live (M-RD37)
  • Page 131 Item I/O - USB I/O - USB (Mouse) I/O-USB (Keyboard) I/O - USB (Camera) I/O - USB (HUB) Com port & PS/2 IEEE 1394 PCMCIA Card Ethernet Card CardBust Card Multi-Function Card Modem Card ISDN Card Appendix B Specifications JAZ 2GB Iomega ZIP 100 Sony Electronics USB Floppy Drive Y/E data USB FDD...
  • Page 132 Item Flash Card ATA Card SCSI Card IEEE 1394 PC Card Wireless LAN Card Smart Media Card SD Card Bluetooth Card Specifications Kingston 64MB Feiya CompactFlash Card (32MB) Feiya Smart Media Flash Memory Card To PCMCIA (32MB) Sundisk 2.5MB HP 10MB Kingston 64MB Toshiba 2G MK20001MPL Toshiba 5G MK5002MPL...

  • Page 133: Microsoft® Windows® Xp Pro Environment Test

    ® ® Microsoft Windows Item Display Video Ethernet Audio Headphone Microphone Speaker I/O Peripheral I/O - printer (parallel) I/O - TV I/O - Keyboard I/O - USB I/O - USB (Mouse) I/O - USB (Speaker) I/O - USB (Camera) I/O - USB (ZIP) I/O - USB (HUB) Appendix B XP Pro Environment Test...
  • Page 134 Item Com port & PS/2 I/O Adapter PCMCIA Specifications Logitech M-M35 Logitech Trackman Marble T-CJ12 Logitech Trackman Portable Mouse T-CC3 Logitech MouseMan M-CV46 Logitech Track Man Live (W/L) M-RD37 Microsoft Intellimouse Microsoft Home Mouse Xircom 32-bit Card bus 10/100 Com 32-bit Card bus 10/100 BASE-TX (3C575-TX) Xircom Etherent 10/100+Modem 56K(CBEM56G-100) Xircom RealPort Card Ethernet 10/100+ Modem56(RBEM56G-100) Toshiba Type II PCMCIA 2G HDD...

  • Page 135: Microsoft® Windows® 2000 Environment Test

    ® ® Microsoft Windows Item Display Video Ethernet Audio Headphone Microphone Speaker I/O Peripheral I/O - printer (parallel) I/O - TV I/O - Keyboard I/O - USB I/O - USB (Mouse) I/O - USB (Speaker) I/O - USB (Camera) I/O - USB (ZIP) I/O - USB (HUB) Appendix B 2000 Environment Test...
  • Page 136 Item Com port & PS/2 I/O Adapter PCMCIA Specifications Logitech M-M35 Logitech Trackman Marble T-CJ12 Logitech Trackman Portable Mouse T-CC3 Logitech MouseMan M-CV46 Logitech Track Man Live (W/L) M-RD37 Microsoft Intellimouse Microsoft Home Mouse Xircom 32-bit Card bus 10/100 Com 32-bit Card bus 10/100 BASE-TX (3C575-TX) Xircom Etherent 10/100+Modem 56K(CBEM56G-100) Xircom RealPort Card Ethernet 10/100+ Modem56(RBEM56G-100) Toshiba Type II PCMCIA 2G HDD...

  • Page 137: Online Support Information

    This section describes online technical support services available to help you repair your Acer Systems. If you are a distributor, dealer, ASP or TPM, please refer your technical queries to your local Acer branch office. Acer Branch Offices may access our website. However some information sources will require a user i.d.
  • Page 138 Appendix C...

  • Page 139: Index

    AC Adapter 32 ACPI 1.0a 23 AFLASH Utility 52 Audio 27, 28 Battery 29 Battery Pack 65 battery pack charging indicator 12 BIOS 23 package 23 password control 23 ROM size 23 ROM type 23 vendor 23 Version 23 BIOS Setup Utility 39 BIOS Supports protocol 23 BIOS Utility 39 Basic System Settings 45...
  • Page 140 Keyboard 28 Keyboard or Auxiliary Input Device Check 79 L2 cache 23 LAN/Modem Combo 24 Machine Disassembly 61 media access on indicator 12 Memory Check 79 Model Definition 118 Modem 24 Modem Combo Card external 67 num lock on indicator 12 Online Support Information 129 Panel 6 Bottom 11...

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