Acer 4520 - page 72

62 Chapter 3

2. Detach the adhesive tab on the cables’s LCD connector, then disconnect the cable from the LCD

panel PCB.

Removing the LCD Panel Brackets

TRemove the screws securing the LCD panel brackets.

Step Part Number and Type Quantity Color Torque

*M2 x L3 BZN+NYLOK 8 Silver 1.6 kgf-cm +/-15%

Acer TM 4520 SG.book Page 62 Friday, June 22, 2007 5:43 PM

Contents

Main Page Copyright Disclaimer Conventions Service Guide Coverage FRU Information Page System Tour 1 1 Chapter 1 1 1 System Utilities 13 Chapter 2 13 13 System Disassembly 27 Chapter 3 27 System Troubleshooting 65 Chapter 4 65 System Block Diagram and Board Layout 83 Chapter 5 83 83 FRU (Field Replaceable Unit) List 87 Chapter 6 87 TravelMate 4520 Series Model Configurations 107 Appendix A 107 Page Page System Tour Chapter 1 Features Computing platform Memory Display and graphics Audio Communications Keyboard and special keys I/O interface Status indicators Power subsystem System security and compliance features Software Physical specifications Environmental specifications Accessories TravelMate Tour Open Front View Close Front View Left View Right View Rear View Base View Status Indicators Easy-launch Keys Productivity Keys System Utilities Chapter 2 Phoenix TrustedCore Setup Utility Accessing the Setup Utility Navigating Through the Setup Utility Setup Utility Menus Information Main Security Setting a system password Page Page Page Exit BIOS Flash Utility BIOS Flash Precautions To flash the BIOS: BIOS Recovery To perform BIOS recovery: Launch Manager To configure an easy-launch key: Page System Disassembly Disassembly Tools Stages of the Disassembly Process Equivalent Torque Values Chapter 3 System Screw List Pre-disassembly Procedure External Modules Disassembly External Modules Disassembly Flowchart Page Page Page Page Page Page Page Page Page Page Page Main Unit Disassembly Main Unit Disassembly Flowchart Page Page Page Page Page Removing the Upper Case Page Removing the LED Board Page Page Page Page Page Page Page LCD Module Disassembly LCD Module Disassembly Flowchart Page Page Page Page Page Page Page System Troubleshooting Chapter 4 Hardware Diagnostic Procedure System Check Procedures External Diskette Drive Check External CD-ROM Drive Check Keyboard or Auxiliary Input Device Check Memory Check Power System Check Check the AC Adapter Check the Battery Pack Touchpad Check POST Error Indicators POST Error Message Error Code List Error Message List System Error No Beep POST Beep Codes Page Page Page Page Index of Symptom-to-FRU Error Message LCD-related Symptoms Power-related Symptoms Memory-related Symptom Audio-related Symptoms Power Management-related Symptoms I/O-related Symptoms Intermittent Problems Undetermined Problems Online Support Information Page System Board Layout Top View Bottom View Page FRU (Field Replaceable Unit) List Chapter 6 Chapter 6 87 Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page TravelMate 4520 Series Model Configurations Appendix A Model A (TravelMate 4220) Model B (TravelMate 4520) Model C (TravelMate 4520) Model D (TravelMate 4520) Model E (TravelMate 4520) Page Test Compatible Components Appendix B Appendix B 113 114 Appendix B Appendix B 115 116 Appendix B Games and Software Compatibility Tests Technical Specifications Appendix C Page Page Page Page Page Page Page Page Page Index