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TM420.book Page I Monday, September 23, 2002 10:27 AM
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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TM420.book Page II Monday, September 23, 2002 10:27 AM Revision History Please refer to the table below for the updates made on TravelMate 420 service guide. Date Chapter Updates II
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TM420.book Page III Monday, September 23, 2002 10:27 AM 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. Disclaimer The information in this guide is sub
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TM420.book Page IV Monday, September 23, 2002 10:27 AM Conventions The following conventions are used in this manual: SCREEN MESSAGES Denotes actual messages that appear on screen. NOTE Gives bits and pieces of additional information related to the current topic. WARNING Alerts you to any damage that might result from doing or not doing specific actions. CAUTION Gives precautionary measures to avoid possible hardware or software problems. IMPORTANT Reminds you to do specific actions r
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TM420.book Page V Monday, September 23, 2002 10:27 AM Preface Before using this information and the product it supports, please read the following general information. 1. This Service Guide provides you with all technical information relating to the BASIC CONFIGURATION decided for Acer's "global" product offering. To better fit local market requirements and enhance product competitiveness, your regional office MAY have decided to extend the functionality of a machine (e.g. add-on card, mod
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TM420.book Page VI Monday, September 23, 2002 10:27 AM VI
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Table of Contents Chapter 1 System Specifications 1 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Top View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Table of Contents Chpater 4 Troubleshooting 77 System Check Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 External Diskette Drive Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 External CD-ROM/DVD-ROM Drive Check . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Keyboard or Auxiliary Input Device Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Memory Check . . . . . . . . . . . . . .
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SG_TM420_Ch1.fm Page 1 Thursday, September 26, 2002 9:23 AM Chapter 1 System Specifications Features This computer was designed with the user in mind. Here are just a few of its many features: Performance ® ® Intel Pentium 4 Processor with 512KB level 2 cache DDR 226 (O/c2100) SDRAM, memory expandable up to 1GB Internal optical drive High-capacity, Enhanced-IDE hard disk Li-Ion main battery pack Power management system with ACPI (Advanced Configuration Power Interface) Display Thin-F
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SG_TM420_Ch1.fm Page 2 Thursday, September 26, 2002 9:23 AM Sleek, smooth and stylish design Acer FinTouch full-sized curved keyboard Ergonomically-centered touchpad pointing device Expansion One type II CardBus PC Card slots Upgradeable memory Keyboard and Pointing Device 84/85/88-key windows keyboard Built-in touchpad pointing device with ergonomic buttons and 4-way integrated scroll key 5 launch keys, including Internet browser, email (with LED for received mail), and 3 user- proga
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SG_TM420_Ch1.fm Page 3 Thursday, September 26, 2002 9:23 AM System Block Diagram File Name : LA-1511 Mobile Northwood SPR Fan Control Thermal Sensor Clock Generator CPU Bypass Conn. & CPUVID uFCBGA/uFCPGA CPU MAX6654MEE W320-04 HA#(3..31) HD#(0..63) System Bus 400MHz Memory CRT Connector Brookdale-M BUS(DDR) SO-DIMM X2 MCH-M 2.5V 266MHz BANK 0, 1, 2, 3 AGP4X(1.5V) 845MP 625 BGA LCD Connector AGP Conn VGA Board TV-OUT LAN LAN interface Connector Kinnereth RJ45 HUB Link 1.8V 266MHz Mini PC
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SG_TM420_Ch1.fm Page 4 Thursday, September 26, 2002 9:23 AM Board Layout Top View 23-JP1 Speaker L connector 39-JP33 Inverter connector 20-JP3 VGA board to B connector 19-JP2 VGA board to B connector 24-JP4 Speaker R connector 22-JP6 SD card connector 21-JP5 Keyboard connector 28-JP12, JP32, JP39 USB port connector 25-JP10 Audio out jack 26-JP9 Audio in jack 30-SW2 BT switch 36-JP11 MDC connector 34-JP7 Touchpad switch PCB 4 Chapter 1
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SG_TM420_Ch1.fm Page 5 Thursday, September 26, 2002 9:23 AM Bottom View 15-JP37 Docking connector 13-JP14 VGA port connector 9-JP21 PCMCIA connector 14-JP15 Printer port connector 1-U41 CPU socket 12-JP13 S video port 16-JP22 Main fan connector 17-PCN1 DC jack 4-PCN4 Battery connector 2-JP25 DDR connector 3-JP28 DDR connector 37-JP23 2nd fan connector 35-JP26 Battery connector 5-JP29 Module 6-JP24 Mini PCI connector 7-JP31 HDD connector 31 FIR 41 Wireless LED 33 Battery LED 27-JP34 RJ11 8-JP3
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SG_TM420_Ch1.fm Page 6 Thursday, September 26, 2002 9:23 AM Outlook View A general introduction of ports allow you to connect peripheral devices, as you would with a desktop PC. Front View # Icon Item Description 1 Display screen Also called LCD (liquid-crystal display), displays computer output. 2 Power Button Turns on the computer power. 3 Speakers Outputs sound. 4 Keyboard Inputs data into your computer 5 Touchpad Touch-sensitive pointing device which functions like a computer mouse. 6
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SG_TM420_Ch1.fm Page 7 Thursday, September 26, 2002 9:23 AM 14 Palmrest Comfortable support area for your hands when you use the computer. Outputs sound. 15 Status indicators LEDs (light-emitting diode) that turn on and off to show the status of the computer, its functions and components. 16 Microphone Inputs sounds and voice into your computer. 17 Launch keys Special keys for launching Internet browser, E-mail program and frequently used programs. Located at the top of the keyboard ar
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SG_TM420_Ch1.fm Page 8 Thursday, September 26, 2002 9:23 AM Left Panel # Icon Item Description 1 Power jack Connects to an AC adapter. 2 Security keylock Connects to a Kensington-compatible computer security lock. K 8 Chapter 1
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SG_TM420_Ch1.fm Page 9 Thursday, September 26, 2002 9:23 AM Right Panel # Icon Item Description 1 USB port Connects to Universal Serial Bus devices (e.g., USB mouse, USB camera). 2 Line-in/Mic-in jack Accepts audio line-in devices (e.g., audio CD player, stereo walkman). Selection is through the OS Windows mixer. 3 Speaker/Headphone- Connects to audio line-out devices (e.g., out jack speakers, headphones) 4 Modem jack Connects to a phone line 5 IEEE 1394 port Connects to an IEEE 1394 de
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SG_TM420_Ch1.fm Page 10 Thursday, September 26, 2002 9:23 AM Rear Panel # Icon Item Description 1 Expansion port I/O replicator or EasyPort expansion devices. 2 External display port Connects to a display device (e.g., external monitor, LCD projector). 3 Parallel port Connects to a parallel device (e.g., parallel printer). 4 S-video Connects t a television or display device with S-video input. 10 Chapter 1
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SG_TM420_Ch1.fm Page 11 Thursday, September 26, 2002 9:23 AM Bottom Panel # Icon Item Description 1 Battery bay Houses the computer’s battery pack. 2 Battery release latches Unlatches the battery to remove the battery pack. 3 Memory compartment Houses the computer’s main memory. 4 Cooling fan Helps keep the computer cool. Note: Don’t cover or obstruct the opening of the fan. 5 AcerMedia drive bay latches the AcerMedia bay to remove the release latch optical diskette drive. 6 Hard disk bay
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SG_TM420_Ch1.fm Page 12 Thursday, September 26, 2002 9:23 AM 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 Description Power Lights green when the computer is on. Flashes when the computer is in low power. Sleep Flashes when the computer enters Sleep mode. Lights when the computer is in Sleep mode. Battery charge Lights green when the battery is bein
