Aspire Digital 7220, 7220G, 7520, 7520G

66 Chapter 3

20. Remove the three screws fastening the subwoofer to the lower case.

21. Remove the subwoofer from the lower case as shown.

Contents

Main Page Copyright Disclaimer Conventions Preface Page System Specifications Chapter 1 Features Operating system Platform and memory Storage subsystem Input devices Communication I/O Ports Environment Page Board Layout Top View Bottom View Chapter 1 7 Your Acer Notebook Tour After knowing your computer features, let us show you around your new Aspire computer. Front View Closed Front View 8Chapter 1 Chapter 1 9 Left View 10 Chapter 1 Right View Rear view Page Easy-Launch Buttons Touchpad Basics 14 Chapter 1 Using the Keyboard Lock Keys and embedded numeric keypad The keyboard has three lock keys which you can toggle on and off. Chapter 1 15 Windows Keys The keyboard has one key that performs Windows-specific functions. Hot Keys Special Key The Euro symbol Page Acer Empowering Technology Empowering Technology password Acer eNet Management Page Acer ePower Management Page Acer eDataSecurity Management Page Acer eLock Management Acer eRecovery Management Acer eSettings Management 1 23 3 Getting to know your Acer OrbiCam Page Using the System Utilities Acer GridVista (dual-display compatible) Page 30 Chapter 1 Hardware Specifications and Configurations Processor CPU Fan True Value Table BIOS Second Level Cache Chapter 1 31 System Memory Memory Combinations 32 Chapter 1 LAN Interface Modem Interface Bluetooth Interface Chapter 1 33 DVD-Dual Interface Hard Disk Drive Interface 34 Chapter 1 Audio Interface USB Port PCMCIA Port Chapter 1 35 Keyboard Battery LCD 17 inch 36 Chapter 1 LCD Inverter AC Adapter System Power Management LCD 17 inch Page Page BIOS Setup Utility Chapter 2 System Utilities Navigating the BIOS Utility Information Main Shows system base memory size Shows extended memory size Page Security Information Main Security Boot ExitAdvanced Setting a Password Removing a Password Changing a Password Page Advanced Boot Exit BIOS Flash Utility Page Chapter 3 Machine Disassembly and Replacement Page Chapter 3 55 Disassembly Procedure Flowchart 56 Chapter 3 Screw List Page Page Removing the Wireless LAN Card/Modem Card and TV Tuner Card Removing the System Fan/Thermal Modules/VGA Board and CPU Removing the Keyboard and LCD Module Page Disassembling the Main Unit Separate the Main Unit Into the Upper and the Lower Case Assembly Disassembling the Lower Case Assembly Page Page Page Disassembling the LCD Module Page Disassembling the External Modules Troubleshooting Chapter 4 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 Power Adapter Check the Battery Pack Touchpad Check Power-On Self-Test (POST) Error Message Chapter 4 77 Index of Error Messages Error Code List 78 Chapter 4 Chapter 4 79 80 Chapter 4 Phoenix BIOS Beep Codes Chapter 4 81 82 Chapter 4 Chapter 4 83 84 Chapter 4 Index of Symptom-to-FRU Error Message LCD-Related Symptoms Indicator-Related Symptoms Power-Related Symptoms Chapter 4 85 PCMCIA-Related Symptoms Memory-Related Symptoms Speaker-Related Symptoms Power Management-Related Symptoms 86 Chapter 4 Peripheral-Related Symptoms Keyboard/Touchpad-Related Symptoms Modem-Related Symptoms Power Management-Related Symptoms Page Undetermined Problems Jumper and Connector Locations Chapter 5 Top View Bottom View FRU (Field Replaceable Unit) List Chapter 6 NOTE: Aspire Poyang Exploded Diagram