Acer Travelmate 4520 Service Guide

							Acer TravelMate 4520 Notebook Computer
Service Guide
                                                                                                                                     PRINTED IN TAIWAN Service guide files and updates are available
on the Acer CSD web site at http://csd.acer.com.tw
Acer TM 4520 SG.book  Page I  Friday, June 22, 2007  5:43 PM 
						

							II
Revision History
Refer to the table below for the updates made on this version of the TravelMate 4520 Notebook Computer 
Service Guide.
DateChapterUpdates
Acer TM 4520 SG.book  Page II  Friday, June 22, 2007  5:43 PM 
						

							III
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.
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 and Centrino are registered trademarks of Intel Corporation.
Intel Core is a trademark of Intel Corporation.
Other brand and product names are trademarks and/or registered trademarks of their respective holders.
Acer TM 4520 SG.book  Page III  Friday, June 22, 2007  5:43 PM 
						

							IV
Conventions
The following textual conventions are used in this service guide.
SCREEN MESSAGESDenotes actual messages that appear on screen.
NOTEGives additional information related to the current topic.
WARNINGAlerts you to any physical risk or system 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.
Acer TM 4520 SG.book  Page IV  Friday, June 22, 2007  5:43 PM 
						

							V
Service Guide Coverage
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.
FRU Information
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.
Acer TM 4520 SG.book  Page V  Friday, June 22, 2007  5:43 PM 
						

							VI
Acer TM 4520 SG.book  Page VI  Friday, June 22, 2007  5:43 PM 
						

							VII
Table of Contents
Features 1
System Tour 1
 1
Chapter  1 1
 1
TravelMate Tour 5
Open Front View 5
Close Front View 6
Left View 7
Right View 8
Rear View 8
Base View 9
Status Indicators 10
Easy-launch Keys 11
Productivity Keys 12
Phoenix TrustedCore Setup Utility 13
System Utilities 13
Chapter  2 13
 13
Accessing the Setup Utility 14
Navigating Through the Setup Utility 15
Setup Utility Menus 16
BIOS Flash Utility 24
Launch Manager 25
Disassembly Tools 27
Stages of the Disassembly Process 27
Equivalent Torque Values 27
System Disassembly 27
Chapter 3 27
System Screw List 28
Pre-disassembly Procedure 28
External Modules Disassembly 29
External Modules Disassembly Flowchart 29
Removing the SD Dummy Card 30
Removing the PC Card Dummy Card 30
Removing the Battery Pack  31
Removing the Lower Case Cover   32
Removing the Memory Modules     32
Removing the WLAN Board      33
Removing and Dismantling the HDD Assembly    34
Removing and Dismantling the ODD Assembly   36
Removing the Processor Cooling Fan     38
Removing the Heat Sink     39
Removing the Processor     40
Main Unit Disassembly 41
Main Unit Disassembly Flowchart   41
Removing the Middle Cover      42
Removing the Keyboard     42
Removing the LCD Module      43
Removing the Upper Case     47
Acer TM 4520 SG.book  Page VII  Friday, June 22, 2007  5:43 PM 
						

							VIII
Table of Contents
Removing the LED Board      49
Removing the Fingerprint and Touchpad Boards             50
Removing the Card Reader Board    52
Removing the Bluetooth Board    53
Removing the System Board    54
Removing the Modem Board     55
Removing the Speakers     55
LCD  Module Disassembly    57
LCD Module Disassembly Flowchart   57
Removing the LCD Bezel      58
Removing the Inverter Board     59
Removing the LCD Module Hinges      60
Removing the LCD Panel     60
Removing the LCD-CCD Cable     61
Removing the LCD Panel Brackets     62
Removing the Internal Microphone and the CCD Board            63
Removing the WLAN Antennas     64
Hardware Diagnostic Procedure 65
System Troubleshooting 65
Chapter 4 65
System Check Procedures 66
External Diskette Drive Check 66
External CD-ROM Drive Check 66
Keyboard or Auxiliary Input Device Check 66
Memory Check 67
Power System Check 67
Touchpad Check 68
POST Error Indicators 69
POST Error Message 69
POST Beep Codes 72
Index of Symptom-to-FRU Error Message 77
Intermittent Problems 80
Undetermined Problems 81
Online Support Information 82
System Block Diagram  83
System Block Diagram and Board Layout 83
Chapter 5 83
 83
System Board Layout 84
Top View  84
Bottom View 85
System Switch 86
FRU (Field Replaceable Unit) List 87
Chapter 6 87
Aspire 5910 Exploded Diagram  88
TravelMate 4520 FRU List 89
TravelMate 4520 Series Model Configurations 107
Appendix A 107
Acer TM 4520 SG.book  Page VIII  Friday, June 22, 2007  5:43 PM 
						

							IX
Table of Contents
Test Compatible Components 113
Appendix B 113
Technical Specifications 117
 117
Appendix C  1 117
 117
Index 127
Acer TM 4520 SG.book  Page IX  Friday, June 22, 2007  5:43 PM 
						

							X
Table of Contents
Acer TM 4520 SG.book  Page X  Friday, June 22, 2007  5:43 PM