Acer 521 - page 93

Chapter 3 83

Removing the LCD Cover Hinges

1. See “Removing the LCD Panel” on page 81.

2. Remove four (4) screws from the LCD cover hinges.

3. Remove the right and left LCD cover hinges.

Step Screw Quantity Screw Type

Remove Cover Hinges 4

Contents

Main Page Copyright Disclaimer Conventions Preface Page System Specifications 1 System Utilities 29 Machine Disassembly and Replacement 45 Troubleshooting 111 Jumper and Connector Locations 127 Page Page System Specifications Chapter 1 Features Storage subsystem Audio subsystem Optical Media Drive Communication Privacy control Dimensions and Weight Power Adapter and Battery Special Keys and Controls I/O Ports Eco standards Warranty Environment Chapter 1 5 System Block Diagram Winbond NPCE781L AMD ASB2 CPU Geneva EC Notebook Tour Top View Closed Front View Left View Right View Base View Indicators TouchPad Basics Using the Keyboard Lock Keys and embedded numeric keypad Windows Keys Hot Keys Special Keys Hardware Specifications and Configurations Page Page Page Page Page Page Page Page Page Page Page Page Page System Utilities Chapter 2 BIOS Setup Utility Navigating the BIOS Utility Information Main Security Setting a Password Page Page Boot Exit Page DOS Flash Utility Page Page Remove HDD/BIOS Password Utilities Page Miscellaneous Utilities Using Boot Sequence Selector Using DMITools Example 1: Read DMI Information from Memory Example 2: Write Product Name to EEPROM Using the LAN MAC Utility Machine Disassembly and Replacement Chapter 3 Disassembly Requirements Related Information Replacement Requirements Page Disassembly Process External Module Disassembly Process External Modules Disassembly Flowchart Removing the Battery Pack Page Page Page Page Page Page Removing the WLAN Module Page Removing the 3G Module Page Main Unit Disassembly Process Main Unit Disassembly Flowchart Page Page Page Page Page Page Page Page Page Page Removing the Mainboard Page Page Page Page Page LCD Module Disassembly Process LCD Module Disassembly Flowchart Page Page Page Page Page Page Page Page Page Page Page Page Page Page Replacing the Thermal Module Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Troubleshooting Chapter 4 Common Problems Power On Issue Computer Shuts down Intermittently No Display Issue No POST or Video Abnormal Video Display Random Loss of BIOS Settings Chapter 4 115 6. If the Issue is still not resolved, see Online Support Information on page 163. LCD Failure Built-In Keyboard Failure Chapter 4 117 TouchPad Failure Internal Speaker Failure Sound Problems Internal Microphone Failure Microphone Problems OK NG HDD Not Operating Correctly Other Failures Intermittent Problems Undetermined Problems POST Code Reference Tables Page Page Page Page Chapter 5 127 Jumper and Connector Locations Chapter 5 Mainboard Top View 128 Chapter 5 Mainboard Bottom View BIOS Recovery BIOS Recovery by Crisis Disk BIOS Recovery Boot Block BIOS Recovery Hotkey Steps for BIOS Recovery from USB Storage Page FRU (Field Replaceable Unit) List Page Page LCD Assembly FRU List Page Page Screw List Page AO521 Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Test Compatible Components Appendix B Page Page Page Online Support Information Appendix C Page B Index C N D O P S T U