Acer Travelmate 4720 Service Guide

							Acer
Travelmate 4720/4320
Service Guide
    
                                                                                                                                     PRINTED IN TAIWAN Service guide files and updates are available
on the ACER/CSD web; for more information, 
please refer to http://csd.acer.com.tw 
						

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Revision History
Please refer to the table below for the updates made on Travelmate 4720/4320 service guide.
DateChapterUpdates 
						

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Copyright
Copyright © 2007 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. 
						

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Disclaimer
The information in this guide is subject to change without notice.
Acer Incorporated makes no representations or warranties, either expressed or implied, with respect to the 
contents hereof and specifically disclaims any warranties of merchantability or fitness for any particular 
purpose.  Any Acer Incorporated software described in this manual is sold or licensed as is.  Should the 
programs prove defective following their purchase, the buyer (and not  Acer Incorporated, its distributor, or its 
dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or consequential 
damages resulting from any defect in the software.  
Acer is a registered trademark of Acer Corporation.
Intel is a registered trademark of Intel Corporation.
Core Duo and Core 2 Duo are trademarks of Intel Corporation.
Other brand and product names are trademarks and/or registered trademarks of their respective holders. 
						

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Conventions
The following conventions are used in this manual:
SCREEN 
MESSAGESDenotes actual messages that appear on screen.
NOTEGives bits and pieces of additional information related to the current topic.
WARNINGAlerts you to any damage that might result from doing or not doing specific 
actions.
CAUTIONGives precautionary measures to avoid possible hardware or software 
problems.
IMPORTANTReminds you to do specific actions relevant to the accomplishment of 
procedures. 
						

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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 Acers 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, modem, or extra memory capability). These LOCALIZED FEATURES will NOT be covered 
in this generic service guide. In such cases, please contact your regional offices or the responsible 
personnel/channel to provide you with further technical details.
2.Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information 
available on your regional web or channel. If,  for whatever reason, a part number change is made, it will 
not be noted in the printed Service Guide.  For ACER-AUTHORIZED SERVICE PROVIDERS, 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. 
						

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System Specification  1
Features 1
Your Acer Notebook Tour  4
Front View 4
Closed Front View  5
Left View 6
Right View 6
Rear Panel 7
Bottom Panel  7
Indicators 8
Easy-launch Buttons 9
Productivity Keys  10
Touchpad 11
Touchpad Basics  11
Using the Keyboard  13
Lock Keys and Embedded Numeric Keypad  13
Windows Keys  14
Hotkeys 15
Special Keys  16
Acer Empowering Technology  17
Empowering Technology Password  17
Acer eNet Management   18
Acer ePower Management   20
Acer ePresentation Management   22
Acer eDataSecurity Management   23
Acer eLock Management   24
Acer eRecovery Management   25
Acer eSettings Management   26
Windows Mobility Center  27
Using the System Utilities  28
Acer BiopProtect (for selected models)  28
Acer GridVista (dual-display compatible)  29
Launch Manager  30
Norton Internet Security  30
NTI Shadow  31
Hardware Specifications and Configurations  32
System Utilities 39
BIOS Setup Utility  39
Entering BIOS Setup  39
BIOS Setup Primary Menus  39
BIOS Setup Navigation Keys  39
Information Menu  40
Main Menu  41
Advanced Menu  42
Security Menu  43
Boot Menu  45
Exit Menu 46
Machine Disassembly and Replacement  47
Disassembly Requirements  47
General Information  48
Table of Contents 
						

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Pre-disassembly Instructions  48
Disassembly Process  49
External Module Disassembly Process  50
External Modules Disassembly Flowchart  50
Removing the Battery Pack  51
Removing the SD Dummy Card  51
Removing the Express Dummy Card  52
Removing the Lower Cover  53
Removing the DIMM  53
Removing the WLAN Board Modules  54
Removing the Hard Disk Drive Module  55
Removing the Optical Drive Module  57
Main Unit Disassembly Process  59
Main Unit Disassembly Flowchart  59
Removing the Fan Module  60
Removing the CPU Heatsink Module  61
Removing the CPU  62
Removing the Middle Cover  64
Removing the Keyboard  65
Removing the LCD Module  66
Separating the Upper Case from the Lower Case  70
Removing the Touchpad Board Module  71
Removing the Fingerprint Board  73
Removing the LED Indicators Board  73
Remove the Daughter Board  74
Removing the Mainboard  76
Removing the Modem Board  77
Removing the Bluetooth Board  78
Removing the Speaker Modules  79
 LCD Module Disassembly Process  81
LCD Module Disassembly Flowchart  81
Removing the LCD Bezel  82
Removing the Inverter Board  83
Removing the LCD with Brackets  84
Removing the LCD Brackets  86
Removing the LCD Module Hinges  87
Removing the Antennas  88
Removing the Microphone  89
Troubleshooting 91
System Check Procedures  92
External CD/DVD-ROM Drive Check  92
Keyboard or Auxiliary Input Device Check  92
Memory Check  92
Power System Check  93
Touchpad Check  94
Power-On Self-Test (POST) Error Message  95
Index of Error Messages  96
Phoenix BIOS Beep Codes  98
Index of Symptom-to-FRU Error Message  102
Intermittent Problems  106
Undetermined Problems  107
System Block Diagram and Connector Locations  109
System Block Diagram  109 
						

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Board Layout 110
Top and Bottom View  110
Hardware Gap Setting  112
Standard Operation Procedures of Clearing BIOS Password and BIOS Recovery  113
Clearing BIOS password  113
Recovering BIOS  114
FRU (Field Replaceable Unit) List  115
Travelmate 4720/4320 Exploded Diagram  116
Travelmate 4720/4320 FRU List  118
Travelmate 4720/4320  126
Model Definition and Configuration  126
Test Compatible Components  129
Microsoft® Windows® Vista™ Environment Test  130
Online Support Information  131 
						

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